Machine For Making Wire-wound Disc Armatures

Abstract

A machine for making wire-wound disc armatures. The machine is comprised of a spindle section and a turret section which operate in synchronization to wind insulated conductor wire into an armature for use in electric machines.

Description

RELATED PATENTS AND APPLICATIONS

Copending applications and related patents assigned to the same assignee as the instant application are: Ser. No. 860,389-- DISC TYPE WIRE WOUND ELECTRICAL MACHINES, U.S. Letters Pat. No. 3,525,008-- ELECTRICAL WIRE WOUND MACHINES, U.S. Letters Pat. No. 3,431,638-- TOROIDALLY WOUND DISC ARMATURES, U.S. Letters Pat. No. 3,524,251-- DISC TYPE WIRE WOUND ELECTRICAL MACHINES, U.S. Letters Pat. No. 3,524,250-- ELECTRICAL WIRE WOUND ELECTRICAL MACHINES, U.S. Letters Pat. No. 3,534,469-- WIRE WOUND ARMATURE, METHOD AND APPARATUS FOR MAKING SAME, U.S. Letters Pat. No. 3,550,645-- WIRE WOUND ARMATURE, METHOD AND APPARATUS FOR MAKING SAME, and Ser. No. 871,586-- WIRE WOUND ARMATURE, METHOD AND APPARATUS FOR MAKING SAME

FIELD OF THE INVENTION

The machine of the subject invention is designed generally for laying wire on a jig in a pattern to effect an article formed of wire. In particular, the machine has application in winding insulated conductor wire to produce wire-wound disc armatures.

BACKGROUND OF THE INVENTION

In recent years, the demand for thin, low mass armatures for electric machines has steadily increased. The electric motors in which the thin low mass armatures are used are generally referred to as printed circuit-type motors. Originally, printed circuit motors were found to be particularly suitable for high performance servo applications, however, more recently a variety of other uses have been found for them.

Printed circuit motors are characterized by a disc shaped armature in which radially extending arrays of conductors are usually bonded to opposite sides of an insulating carrier. The design of an armature formed of radially extending arrays of conductors affords a low inertia armature which replaces the conventional iron core armature with coil slots.

A variety of techniques have been employed to produce printed circuit motor-type armatures. Chemical etching techniques, chemical plating techniques and mechanical stamping techniques have been used to make printed circuit motor armatures. The printed circuit motors using armatures formed by the conventional techniques such as chemical etching, chemical plating or metal stamping exhibit high acceleration and smooth low torque characteristics. Consequently, they have been found to be particularly suitable for many special applications.

However, small printed circuit motors having armatures formed by the above-described techniques are limited by the inability to operate at high voltages. This restriction results from the requirement that the armatures made by the above-described techniques must be formed with a finite number of single turn coils due to the physical space limitations.

Recently, a technique of winding disc-type armature coils from insulated copper wire was developed. This technique provides a thin low inertia armature which is referred to as a wire-wound disc armature which is similar to the printed circuit armature but considerably superior in certain respects.

In a copending application, Ser. No. 511,608, filed Dec. 6, 1965, in the name of Robert Page Burr, having a common assignee with this application, an insulated wire-wound-type disc armature is illustrated as well as the methods for making it. This type of armature can be constructed with considerably more single turn coils since the insulation of the wire enables compacting a multiplicity of turns in intimate contact. Consequently, the wire-wound disc armature can operate over a greater spectrum of voltages than printed circuit armatures.

In addition, the wire-wound disc armatures are considerably less expensive since the exacting precision necessary to etch or stamp a printed circuit armature is not necessary. Moreover, there is a saving in copper since, unlike the etched and the stamped armatures, copper need not be removed from a blank to form the armature.

To produce wire-wound disc armatures in volume and at a rate which will make the wire-wound disc armature commercially attractive, the machine of the subject invention was developed. The method of winding insulated conductor wire to form a wire-wound disc armature is specifically described in copending application Ser. No. 620,306, filed Mar. 3, 1968, in the name of Raymond J. Keogh which is assigned to the same assignee as this application.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a machine which will wind wire into a predetermined pattern at a rapid rate.

It is a further object of the present invention to provide a machine that will wind insulated conductor wire into thin, low mass disc-type wire-wound armatures for use in electric machines.

To this end, the machine of the subject invention is comprised of a spindle assembly which dispenses insulated conductor wire, a turret assembly on which the insulated wire is wound to a predetermined design and a power transmission system for synchronizing the movement of the spindle assembly with the movement of the turret assembly. More particularly, the spindle section is comprised basically of a scotch-yoke drive means to power the scotch-yoke, a reciprocating rod which mounts a stylus adapted to dispense copper wire and means to control the length of reciprocating rod stroke. The rod mounting the stylus reciprocates as a function of the movement of the scotch-yoke while the stroke length of the rod is controlled by a stop which can be selectively engaged. The turret assembly mounts a pin jig on which pins are arranged in a predetermined pattern to project upwardly. The pin jig provides the form about which the stylus lays the wire and is basically comprised of three concentrically arranged circular rows of pins. Functionally, the pin jig rotates in synchronization with reciprocation of the stylus to align various openings between pins with the path of the reciprocating stylus. The drive assembly, which operates to synchronize the rotation of the pin jig in accordance with the reciprocation of the scotch-yoke and stylus, is provided with an ancillary motor and power transmission system to index the pin jig with respect to the spindle after a predetermined number of turns to thereby advance the winding pattern to a set of pins different from the previous set. In addition to the synchronization of the turret assembly rotation with the spindle assembly reciprocation, a power transmission assembly is also provided to effect depression of the pin jig as the wire wound on the pins begins to accumulate.

In operation, the machine is controlled by commands from a control module which reads a closed loop of punched paper tape. Basically, the sequence of commands begins by a signal to energize the motor to drive the spindle. The spindle and turret begin operating concomitantly by virtue of the power transmission assembly. Initially, a command is also given to locate the rod stop in the path of the spindle reciprocating rod to limit the travel of the stylus to a point between the intermediate row of pins and the innermost row of pins on the pin jig. After a predetermined number of armature turns have been made, the stop is removed from the path of the rod and the reciprocating rod is thereby allowed to travel a full stroke. The full stroke of the reciprocating rod takes the stylus beyond the innermost row of pins to make a commutator pullout in the armature. Next, the machine is stopped and a turret index motor and power transmission takes over to rotate the pin jig while the spindle is locked in a fixed position. A different set of pins is now arranged to provide the form on which the next set of armature turns are to be wound. The machine is restarted and follows a set of commands similar to those originally given to wind another set of armature turns. The sequence is repeated until the armature is completed.

DESCRIPTION OF THE DRAWINGS

An illustrative embodiment of the invention is set forth in the drawings which form part of the specification and wherein:

FIG. 1 is a plan view of the machine of the subject invention showing the spindle and turret sections generally;

FIG. 2 is a side elevational view of the machine taken through line 2-2 of FIG. 1;

FIG. 3 is a side elevational view of the machine of the subject invention taken through line 3-3 of FIG. 1;

FIG. 4 is a front elevational view of the turret assembly;

FIG. 5 is a plan view of the turret assembly shown without the pin jig or holddown ring;

FIG. 6 is a sectional plan view of the turret assembly taken through line 6-6 of FIG. 4;

FIG. 7 is a sectional elevational view of the turret assembly taken through line 7-7 of FIG. 4;

FIG. 8 is a plan view of the spindle assembly shown without the reciprocating rod;

FIG. 9 is a sectional elevational view of the clutch assembly in the spindle drive shaft taken through line 9-9 of FIG. 8;

FIG. 10 is a sectional elevational view of the cam and cam slot in the scotch-yoke taken through line 10-10 of FIG. 8;

FIG. 11 is a front elevational view of the spindle assembly taken through line 11-11 of FIG. 8;

FIG. 12 is a sectional elevational view of the spindle assembly taken through line 12-12 of FIG. 8;

FIG. 13 is a rear elevational view of the spindle assembly taken through line 13-13 of FIG. 8;

FIG. 14 is an exploded view of the pin jig assembly;

FIG. 15 is a detail view of the pin jig plate with the stripper plate mounted thereon;

FIG. 16 is a schematic diagram of the power transmission assembly and synchronization system of the machine;

FIGS. 17A--17D are a series of diagrams illustrating an armature winding sequence.

FIG. 18 is a schematic of a punched paper tape controlled logic unit adapted to control the functions of the machine.

DESCRIPTION OF THE PREFERRED EMBODIMENT

The present invention relates to a machine adapted to wind wire around a form in a specified pattern to form a wire-wound armature for use in low inertia electric machines. Basically, the wire-wound armature formed by the machine of this invention is comprised of a closed winding having a plurality of single turn armature coils interconnected in a wave configuration. The armature coils are divided into a plurality of similar groups which are indexed relative to each other to provide a uniform distribution of armature coils.

The complete machine 2 of the subject invention, except for the associated electrical circuitry, is shown in FIGS. 1, 2 and 3. The machine 2, as seen in FIGS. 1,2 and 3, is comprised of three major subassemblies; the spindle assembly 4, the turret assembly 6 and a drive and power transmission assembly adapted to synchronize the movement of the spindle assembly 4 with the turret assembly 6.

The spindle section 4 is comprised of a scotch-yoke 8 and drive means to provide reciprocation for the stylus carrying rod 10 which mounts the stylus 12. The insulated conductor wire which ultimately forms the wire-wound armature is threaded through the stylus 12 which is arranged to overlay the turret assembly 6 and reciprocate with respect thereto. The stylus 12 is mounted on the stylus rod 10 which is, in turn, mounted on the scotch-yoke 8. The scotch-yoke 8 is powered by the main motor 14 which transmits power through a double V-belt band 16 arranged around the motor pulley 18 and the scotch-yoke drive shaft pulley 20. A secondary or auxiliary motor 22 is provided to facilitate braking of the main motor and aid in driving the spindle shaft 26 which rotates the scotch-yoke by two V-belts 24 which are arranged around a pulley on the shaft 28 of the auxiliary motor 22 and the pulley 20 on the spindle drive shaft 26.

The stylus rod 10 mounting the wire-dispensing stylus 12 is slidably mounted in the scotch-yoke 8 and has a stop member 30 (FIG. 3) fixedly attached thereto. Two sleeve members 32 and 34 fixedly attached to the rod 10 and a spring 36 are arranged to slidably mount the stylus rod 10 on the scotch-yoke 8. A guide 38 extends upwardly from the stylus rod 10 and rides on a guide rod 40 to preclude rotational or skew movement of the stylus rod 10.

Basically, the scotch-yoke 8 is comprised of a rotating table 42 having a cam race or slot 44 formed therein, parallel guide members 46 and 48 and a reciprocating block member 50 arranged to slide in the guide members 46 and 48 for reciprocation.

A pneumatically operated stop 52, or similar device, is mounted in alignment with the stop 30 on rod 10 to afford selective shortening of the stroke of the rod 10.

As generally indicated in FIGS. 1, 2 and 3, the turret assembly 6 of the machine 2 is comprised of a housing 54 which mounts the turret spider 102 and a pin jig assembly generally indicated as 70. Basically, the turret assembly 6 is the section of the machine 2 which mounts and rotates the pin jig 70 around which the conductor wire is wound to form the wire-wound armatures. Although a variety of mechanisms can be used to mount and rotate the pin jig 70, it has been found that a centrally disposed turret support shaft 88 terminating in a turret spider 102 and an outer cylindrical turret drive shaft 86 coaxially arranged with the turret support shaft 88 is particularly suitable (FIG. 2). In addition, since it has been found desirable to lower the pin jig 70 as the wire accumulates thereon, the turret support shaft 88 is arranged to travel vertically with respect to the turret drive shaft 86. Therefore, in practice it has been found convenient to arrange the turret support shaft 88 for vertical movement with respect to the drive shaft 86. The shafts 86 and 88 are connected by means of a drive arm 90 which extends from the shaft 88 and a pin 94 depending from an arm of the turret spider 102 into a hole 92 in the arm 90. Similar means for insuring coincident rotational movement between shafts 86 and 88 while affording axial movement therebetween, such as splined shafts, can also be used.

The turret spider 102 is provided primarily to mount the pin jig assembly and for that purpose is provided with means, such as holddown clamps 220 located near the end of each spider arm 130, to positively attach the pin jig baseplate 188 thereto.

The housing 54 which mounts the turret spider 102 also accommodates the power transmission mechanisms for rotating and indexing the turret table and for depressing the turret spider 102 as the wire accumulates on the pin jig.

Also, as seen in FIGS. 1, 2 and 3, the machine 2 is provided with an ancillary support structure 72, which may be of any suitable form. The support structure 72 serves to mount the guide rod 40 and supports 74 for the stylus rod 10. In addition, the support structure can be used to conveniently mount the wire spool 76 from which conductor wire 78 is taken as the stylus 12 winds an armature on the pin jig 70. For this purpose, a support arm 80 can be extended over the turret assembly 6. The support arm 80 can also be used to mount means for maintaining the wire on the pin jig.

The turret assembly 6 is best seen in FIGS. 4, 5, 6 and 7. The drive for the turret (FIG. 6) is provided by a shaft 58 extending from the spindle assembly 4. A gear 60, in which the shaft 58 terminates, engages a mating gear 62 on a worm gear drive shaft assembly 64. The worm gear drive shaft assembly 64 is comprised of shaft stub 64a, a differential gear mechanism 66 having four bevel gears 68a, 68b, 68c and 68d in a boxlike arrangement, concentrically arranged shafts 64b and 64c and shaft stub 64d. The centrally disposed shaft 64b is attached at one end to the bevel gears 68b and 68d for rotation therewith, while the other end of the shaft 64b extends through gear 66c to rigidly attach to a worm gear 76. The stub shaft 64a mounts the gear 62 and the cylindrical shaft section 64c connects the bevel gear 64c with a worm gear 110 from the turret index assembly. Thrust bearings 82 and an antibacklash nut 96 are also provided on the worm gear shaft assembly 64 to enhance alignment and reliability.

A worm gear 84, rigidly affixed to the cylindrical turret drive shaft 86, mates with the worm gear 76 to complete the turret power transmission assembly. The cylindrical turret drive shaft 86 is driven by the worm gear 76 and, in turn, drives the turret support shaft 88 through the drive arm 90 and rod 94.

Structurally, the outer cylindrical shaft 86 is mounted for rotation in a bearing assembly 98 in the housing 56 and prevented from elevational movement by appropriate means, such as a flange and shoulder assembly 100. The turret spider shaft 88 arranged coaxially with the turret drive shaft 86 is mounted for both rotation and axial movement by a sleeve bearing 132.

The housing 54 also accommodates the transmission assembly for indexing the turret spider 102. An index motor is arranged to drive the index shaft 104 through two V-belts attached to the pulley 106 on the end of the shaft 104. The shaft 104 terminates on its other end in a change gear assembly 108 comprised of a drive gear 108a which engages an idler gear 108b which, in turn, is arranged to engage a driven gear 108c. The driven gear 108c is mounted on the end of a shaft 114 which carries a worm gear 116 adapted to engage the indexing gear 110 on the worm gear shaft assembly 64.

The means for elevating and depressing the spider 102 is provided by the change gear assembly 118 consisting of the drive gear 118a, idler gear 118b and driven gear 118c. The drive gear 118a is mounted on a shaft 120 which extends from the spindle section 4 through the housing 54 to an appropriate bearing mount. The driven gear 118c is arranged on a shaft 122 having an array of gear teeth 126 that engage directly with gear teeth 128 on the turret spider support shaft 88. A manual control knob 124 is provided to facilitate disengagement of the driven gear from the change gear assembly 118 to allow for manual depression or elevation of the turret spider support shaft 88.

The spindle assembly 4, as seen in FIGS. 8, 9, 10, 11, 12 and 13, is provided to afford the means for feeding the insulated copper wire to the pin jig 70 mounted on the turret assembly. Basically, the spindle assembly is comprised of a scotch-yoke assembly 8, a rod 10 terminating in a stylus 12 through which the insulated copper wire is fed, and means to drive the scotch-yoke.

The scotch-yoke 8 best seen in FIG. 8, is comprised of a rotating circular plate 42 having a cam slot 44 formed therein, a reciprocating plate 144 arranged above the rotating circular plate 42 and guide rails 46--48 in which the rotating circular plate 42 slides. The flat plate 144 is provided with a cam follower 150, best seen in FIG. 10, depending downwardly into a cam slot 44 in the circular plate 42. The reciprocating flat plate 144 has the stylus carrying rod 10 mounted thereon.

As seen in FIG. 8, the rotating shaft of main motor 14 terminates in a pulley 18 and by means of a V-belt 16 is connected to the spindle drive shaft pulley 20. Additional power for driving the spindle drive shaft is afforded by the auxiliary spindle motor 22 which connects with the spindle drive shaft pulley 20 by means of two V-belt pulleys 24.

The spindle drive shaft pulley 20 is fixedly mounted on the spindle drive shaft 152, best seen in FIG. 12. The spindle drive shaft 152 has a worm gear 154 formed thereon which engages a worm 156 arranged on the spindle support shaft 158 on which the scotch-yoke 8 is mounted for actuation. Rotation of the spindle shaft 158 is synchronized with the turret drive by a direct power transmission connection through an assembly of change gears 160 comprised of a drive gear 160a in which the spindle drive shaft 152 terminates, an idler gear 160b and a driven gear 160c. The driven gear 160c is arranged on the end of the power transmission shaft 58 which extends from the spindle assembly to the turret assembly to drive the turret drive shaft assembly.

The spindle is provided with a second gear mechanism comprised of a worm gear 162 located on the lower end of the spindle support shaft 158 which worm gear 162 engages a mating worm gear 164 arranged on a stub shaft 166. This gear mechanism operates a power transmission assembly which ultimately controls the vertical fall of the turret spider and pin jig as a function of the rotation of the scotch-yoke. A change gear assembly 168 is employed to transmit power from the spindle assembly to the turret assembly at a controlled rate. The change gear assembly 168 is comprised of a drive gear 168a mounted on the end of the stub shaft 166, an idler gear 168b and a driven gear 168c. The driven gear 168c is fixedly mounted on the end of the power transmission shaft 120 which provides the power to lower the turret spider as the wire forming the armature accumulates on the pin jig.

In operation, the worm gear 162 on the spindle shaft 158 drives the worm gear 164 on the stub shaft 166 which, in turn, drives the driven gear 168c through the change gear assembly 168. The power transmission shaft 120 on which the driven gear 168c is mounted extends from the spindle assembly to the turret assembly to rotate the drive gear 118a of the turret lowering change gear assembly 118, seen in FIGS. 6 and 7. The driven gear 118c of the turret lowering change gear assembly 118 drives the shaft 122 in which gear teeth 126 are formed. Consequently, the rotation of gear teeth 126 imposes a force on the turret support shaft 88 through gear teeth 128 to lower the entire turret spider assembly as a function of the speed of the spindle assembly. Essentially, the speed of the spindle assembly is directly proportional to the amount of wire laid down on the turret pin jig. Therefore, as the wire begins to accumulate to the turret head, the turret will be depressed to afford an adequate clearance area for passage of the stylus 12 as it dispenses subsequent layers of wire.

In addition, the spindle assembly includes means to selectively shorten the stroke of the stylus rod 10, such as a pneumatically actuated stop assembly 52 which is arranged in alignment with the stop 30 depending from the stylus rod 10. The stop assembly 52, best seen in FIG. 12, is comprised of a housing 170, a stop member 172 slidably mounted in the housing 170, an actuator piston 174 and the piston rod 176 which mounts the stop member 172. Chambers 178 and 180 are located on either side of the piston 174 and communicate with a pressure source by means of lines 182 and 184 respectively. A pressure source, such as an air cylinder (not shown) is arranged with a suitable two-way valve 186 to selectively pressurize either chamber 178 or 180. The valve 186 can be controlled by any suitable electromechanical transducer capable of responding to signals from a control module.

The stop 172 acts to prevent the stylus rod 10 from making the maximum stroke during the winding of the armature. Consequently, when a commutator pullout must be made in the armature, it is necessary for the stop to be depressed to allow maximum stroke travel of the rod 10. Accordingly, the stylus rod 10 must be stopped during the majority of the strokes since a commutator pullout is made only on the order of once for every four loops. In operation, pressure from the air cylinder is selectively directed through valve 186, to either line 180 or 184 to enter chambers 178 or 180 respectively, and act on piston 174 to either elevate or depress the stop 172. It should be noted that any means can be used to raise and lower the stop; however, in practice, it has been found that the positive actuation of a pneumatic actuator is particularly suitable to perform the desired elevation and depression of the stop 172.

Since the spindle drive must be stopped each time a turret index step is required, it has been found convenient to provide both a main UNIVERSAL motor 14 and an auxiliary spindle AC motor 22 to drive the spindle shaft 152. The heavy duty main UNIVERSAL motor 14 is arranged with a V-belt 16 around a pulley 20 connected to the spindle drive shaft 152. The auxiliary AC motor 22 is also connected by a belt drive to the pulley 20. However, the pulley 20, as best seen in FIG. 9, is provided with a clutch mechanism 222 which operates to insure concomitant rotation of the pulley sections 224 and 226 when the main motor 14 is energized, but independent rotation of the pulley sections 224 and 226 when the main motor 14 has been deenergized and the entire rotation of the spindle shaft 152 is being provided by the auxiliary motor 22.

In practice, it has been found that an "overrunning" clutch 222 is suitable for use as the means to couple the output from the main spindle motor 14 and the auxiliary spindle motor 22. The "overrunning" clutch body 226 is fixedly mounted on the spindle shaft 152 while the cooperating outer race 228 of the clutch is fixedly attached to the pulley section 224. Spring loaded balls 230 are arranged in the clutch body 222 to bear against the clutch outer race 228 in such manner that rotation of the pulley 20 in one direction (clockwise) will provide a firm coupling between the pulley sections 224 and the clutch body 222 through the balls 230. Rotation of the pulley section 224 in the other direction (counterclockwise) or decreased rotational speed of the pulley section 224 relative to the shaft 152 will disengage the coupling.

In operation, the main motor 14 and auxiliary AC motor 22 are energized simultaneously to start the rotation of the spindle drive shaft 152. However, to effect braking of the spindle drive shaft 152, the heavy duty UNIVERSAL motor 14 is deenergized on the stroke prior to the actual braking operation. During the interval between deenergization of the main motor 14 and the braking of the spindle drive shaft 152, the auxiliary AC motor 22 drives the shaft 152. Braking is finally accomplished by deenergizing the auxiliary AC motor 22. It should be noted that any means which can insure positive braking of the spindle shaft drive upon a command signal can be used.

The machine can also be provided with means to automatically control the operation of the machine functions. In practice it has been found desirable to feed signals back to the control circuit which indicate the completion of each rotation of the shaft 152, the extended position of the stylus rod 10 and the retracted position of the stylus rod. As seen in FIG. 11, a cam shaft 322 is provided with cams 328, 330 and 332 which close contactor switches 276, 288 and 300 as the respective machine functions occur. A timing gear 324 fixedly mounted on shaft 152 and a timing gear 326 fixedly mounted on the cam shaft 322 are connected by a timing belt 320 to insure coincident rotation of the cam shaft 322 and the shaft 152.

The pin jig assembly adapted to be mounted on the turret spider 102 to afford the means around which to wind the wire into an armature is shown in FIGS. 14 and 15. Basically, the pin jig is comprised of a pin jig base 188, a stripper plate 190 and a pressure and support ring 192. The pin jig base 188 has three circular rows of pins 194, 196 and 198 projecting upwardly.

An infinite variety of pin jig assemblies can be used to serve as the form on which the armature is wound. However, for the purpose of illustration, a 27 pin jig plate having 27 pins in the outer row 194 and the intermediate row 196 and 9 pins in the inner row 198 is depicted. The pins in all three rows 194, 196 and 198 are preferably formed of steel hardened rods. The nine inner pins are referred to as commutator pullout pins since their function is to provide the means around which to pass the insulated copper wire when a commutator pullout must be made in the armature. The stripper plate 190 is provided with three annular arrays of holes 200, 202 and 204, which are in alignment with the three annular rows of pins 194, 196 and 198 on the pin jig base 188. In the assembled state, the plate 190 fits over baseplate 188 with each of the baseplate pins transpiercing the respective stripper plate holes.

The stripper plate 190 is also provided with three cutout sections 206 which are arranged to afford the spider holddown clamps 130 with access to the pin jig base 188. It is the function of the turret spider 102 to rigidly retain the pin jig baseplate 188 and the stripper plate 190 on the turret assembly for rotation therewith. Functionally, the stripper plate 190 is used to facilitate removal of the completed armature from the pin jig 188.

The pressure and support ring 192 is annular in shape with the width of the annulus being substantially equivalent to the distance between the baseplate outer row of pins 194 and the baseplate intermedially disposed row of pins 196. A stylus clearance slot 208 is provided in the support ring for the purpose of affording the stylus with access to the pin jig interior and a means by which to return outwardly therefrom on each stroke. A ramp or slope 210 is also provided on the pressure and support ring 204 to facilitate the passage of the insulated copper wire into and out of the pin jig center. Means to mount the pressure and support ring in a fixed location are also necessary and, in practice it has been found that two holes 212 and 214 located in alignment with two posts 138 and 146 depending downwardly from the support frame arm 80 will serve to fixedly mount the pressure and support ring 192 properly. Of course, any means for maintaining the pressure and support ring in a fixed orientation which will not impede the rotation of the turret and pin jig baseplate 188 can be used.

With this arrangement of parts, the pressure and support ring 192 serves to keep the insulated copper wire compacted as it is being woven around the pins. In addition, the pressure and support ring provides support for both the outer row of pins 194 and intermediate row of pins 196 while reacting the pressure imposed on the pins generated as the stylus draws the insulated copper wire around the pins.

The synchronization of the machine is provided by a transmission assembly shown in FIG. 16. The power to drive the transmission assembly is provided by the main motor which drives the spindle drive shaft 152 through a V-belt. The spindle drive shaft 152 has a worm 154 fixed thereon which rotates the spindle shaft 158. In addition, the spindle drive shaft 152 terminates in a drive gear 160a which engages an idler gear 160b that is, in turn, arranged to engage a driven gear 160c. The driven gear 160c is rigidly attached to the first turret drive power transmission shaft 58 which extends to the turret assembly and drives the second turret drive power transmission shaft assembly 64 through gears 60 and 62. The second turret drive power transmission shaft 64 has a worm gear 76 arranged thereon which mates with the worm gear 84 on the turret drive shaft 88.

Also included in the power transmission system is a turret indexing mechanism. The turret index mechanism operates to index the turret spider 102 relative to the spindle assembly. Thus, the turret indexing mechanism is engaged to index the turret spider 102 and pin jig baseplate when the spindle assembly is locked in a fixed position. The turret indexing mechanism is driven by a turret index motor through V-belts 136 which are arranged around a pulley 106. The pulley 106 is fixed to the end of a first index power transmission shaft 104 which terminates on the other end in a change gear assembly 108. The driven gear 108c of the change gear assembly 108 is fixed to a second index power transmission shaft 114 on which a worm gear 116 is formed. The worm gear 116 engages a mating worm gear or index gear 110 which is connected directly to gear 68c of the differential gear mechanism 66. Consequently, during the period in which the main drive motor and the auxiliary spindle motor are inoperative and the power transmission shaft 58 and the gears 60 and 62 are locked to prevent any rotation thereof, the turret index mechanism can rotate the turret support shaft 88 through the worm gear assembly 76--84 and the turret drive shaft 86.

Means for lowering the turret spider 102 and pin jig assembly synchronously with the rotation of the spindle assembly is also shown in FIG. 16. A worm gear 162 formed on the spindle shaft 158 transmits power through a gear 164 on a first turret lowering power transmission shaft 166 to a change gear assembly 168. The driven gear 168c of the change gear assembly 168 is fixedly mounted on a second turret lowering power transmission shaft 120 that terminates in a change gear assembly 118. The driven gear 118c of the change gear assembly 118 is fixed to a third turret lowering power transmission shaft 122 on which a gear 126 is formed. The gear 126 is arranged in engagement with a gear 128 on the turret spider support shaft 88. Consequently, as the spindle shaft 158 rotates, the turret spider support shaft 88 is concomitantly lowered.

Control of the machine 2 is realized by a preprogramed control system such as a punched control tape module. If punched control tape is used, the program used varies for each armature design. Functionally, the initial control message to the machine is a command to close the power circuit to the main motor 14 and the spindle auxiliary motor 22. Next, the machine is commanded to continue operating until a specified number of armature loops have been wound on the pin jig. After the specified number of armature loops have been made, a command is sent to open the power circuit to the main motor 14, thereby deenergizing the motor 14. However, at this point in the operating cycle, the auxiliary motor 22 continues to drive the stylus shaft 158. As the final stroke of the specific cycle is made, a command is sent to the mechanism that determines the control of the air cylinder which operates the pneumatic stop assembly 52. The signal adjusts the valve to a position wherein communication between the air source and the upper piston chamber 178 is provided. The air entering the upper piston chamber 178 forces the piston 174 and the stop 172 downwardly and out of the path of the stylus rod stop 30.

Consequently, with the machine running at the same controlled speed, the stylus rod travels beyond one of the pins in the inner row of pins 198 on one side thereof and returns on the other side thereby making a commutator pullout.

After the commutator pullout stroke has been completed, a command signal is sent to the auxiliary motor power circuit to open the circuit thereby stopping the auxiliary motor 22. Concomitantly, a command signal is sent to the turret index motor power circuit to close the circuit, thereby energizing the turret index motor 134. The turret index motor rotates the turret shaft 86 through the mechanical paths comprised of shaft 104, change gear assembly 108, shaft 114, gears 116--110, differential gear mechanism 66 and worm gear 76. During this operation the mechanical power transmission path from the spindle assembly is locked in place, hence the turret and pin jig baseplate have been moved relative to the spindle. Hence, a set of pins different from the set around which the previous armature loops were wound will be used to wind the subsequent cycle.

After the indexing of the turret has been completed, a cam switch on the turret index motor will open the turret index motor power circuit to deenergize the turret index motor.

Concomitant with the deenergization of the turret drive motor, the main motor 14 and spindle auxiliary motor 22 are engaged to begin another winding cycle.

In practice, it has been found desirable to control the armature winding machine by a punched paper tape-controlled relay logic unit designed to insure positive operation of each of the motor operation. A variety of armature patterns can be wound on the machine since the tape need only be punched in a pattern to signal various operating parts of the machine.

Basically, as seen in FIG. 18, the punched paper tape-controlled relay logic unit is comprised of the paper tape reading circuitry and the logic circuitry. The paper tape reading circuitry is adapted to read commands for seven machine functions. Channels 232--244 read the respective commands for the functions as follows: deenergize the spindle drive motor 14, deenergize the auxiliary spindle motor or spindle position motor 22, depress the stop member 52, signal the fully extended stylus rod 10, signal the fully retracted stylus rod 10, read the signal to start the machine and read the signal to terminate the winding cycle.

The logic circuit is comprised of six flip-flop circuits 246--256 with associated AND and OR gates. The flip-flop circuits 246--256 are shown with an s and c to indicate the set and clear states respectively.

Flip-flop circuit 246 and its associated AND gate 258 are used to detect the beginning and end command blocks in the tape. If channel 242 is punched and simultaneously the stylus rod 10 is in the fully extended position, AND gate 258 will set flip-flop circuit 246. The output of the flip-flop circuit 246 is coupled to one leg of AND gate 260 and one leg of AND gate 262 associated with flip-flop circuits 248 and 250 respectively. The flip-flop circuits 248 and 250 control, respectively, the spindle drive motor 14 and the spindle position motor 22. Absence of a punch in channel 242 in the first tape line will prevent operation of either of the motors. In a similar manner the detection of a channel 244 punch in the tape resets flip-flop circuit 246, thereby disabling the spindle drive motor 14 and spindle position motor 22 at the end of the winding sequence.

Flip-flop circuit 248 is connected to relay driver 264 which drives relay 266 and hence controls power to the spindle drive motor 14. If flip-flop circuit 248 is in the clear state, relay 266 is deenergized. In this condition, no power is applied to the spindle drive motor 14 but the capacitor 268 is shunted across its terminals. In the set state flip-flop circuit 248 energizes relay 266, which closes the switch 274 thereby connecting the terminals of motor 14 to an AC source and simultaneously charging capacitor 268 through the series combination of resistor 270 and diode 272. The spindle drive motor 14 is a series wound motor which is driven in one direction by the AC source when relay 266 is energized and is braked by the energy stored in capacitor 268 when the relay 266 is deenergized.

A contactor switch 276 which can be arranged on a camshaft 322, seen in FIG. 11, is closed each time the spindle drive motor 14 makes one full turn. The flip-flop circuit 248 is reset or cleared through OR gate 278 which deenergizes relay 266, removing power from the spindle drive motor 14 and simultaneously shunting capacitor 268 across the motor terminals. The charge on the capacitor 268 has the effect of quickly braking the spindle drive motor 14 to a stop. The feedback from contact switch 276 also is applied as a signal to the tape reader input causing it to advance to the next punched line which continues the signal to AND gate 262. In operation, the reset or clearing of flip-flop circuit 248 and the subsequent setting thereof occurs instantaneously so as to be unnoticeable in the operation of the machine.

The flip-flop circuit 250 controls power to the spindle position motor 22 in a manner identical to that described for the control of the spindle drive motor 14 by the flip-flop circuit circuit 248. The circuitry from the flip-flop circuit 250 to the spindle auxiliary motor 22 includes a relay driver 290, a relay 292, a capacitor 294, a resistor 296, a diode 298 and a switch 299. The circuit is connected in an identical manner to the circuit connecting the flip-flop circuit 248 and the spindle drive motor 14. Similarly, the operation of the circuit is the same. There are, however, additional inputs which control the set and clear functions of the flip-flop circuit 250. These are performed by AND gate 262 and OR gates 280 and 282 and will be described later.

The flip-flop circuit 252 is set by a command punched in tape channel 238, and is a command to fully extend the stylus rod 10. In this case, contactor switch 288 serves as a feedback element to detect completion of this operation and transmits a signal to reset the flip-flop circuit 252.

The flip-flop circuit 254 is set by a command punched in tape channel 240 which is a command to fully retract the stylus rod 10. Flip-flop circuit 254 is reset by the action of contactor switch 300 which senses the fully retracted position of the stylus rod 10.

The flip-flop circuit 256 controls the action of the index motor 134, in response to commands from AND gate 284 and OR gate 286. A separate contactor switch 316, best seen in FIG. 6, is driven by the turret index motor 134 and detects one revolution of the motor which is geared in such a manner that one revolution corresponds to one pin pitch of the pin jig assembly 70. The closing of contactor switch 316 resets the flip-flop circuit 256 and simultaneously commands the tape reader to advance to the next punched line.

The circuitry connecting the flip-flop circuit 256 with the turret index motor 134 is virtually identical to the circuitry connecting the flip-flop circuits 248 and 250 with the main drive motor 14 and the auxiliary spindle motor 22. Again, the circuit includes a relay driver 304, a relay 306, a capacitor 308, a resistor 310, a diode 312 and a switch 314.

Tape channel 236 controls the air cylinder switch which raises and lowers the stop 52. The absence of a punch in the tape passing over channel 236 signals the air cylinder to raise the stop 52 thus shortening the stroke of the stylus rod 10. A punch in channel 236 causes the air cylinder to withdraw the stop 52 allowing a full stroke of the stylus rod 10 for the purposes of making the armature pullout at the appropriate times in the winding cycle.

The contactor switches 276, 288 and 300 are preferably arranged with a camshaft 322 that is coupled to the spindle drive shaft 152 by a timing belt 320 which extends around a timing gear 324 on the shaft 152 and a timing gear 326 on the camshaft 322 as seen in FIG. 11.

In operation, the machine is started by inserting a punched paper tape in the tape reading circuitry. A start button (not shown) then is depressed to provide power to the module and thereby cause the tape reader to read the first command on the tape. With all the gates in the closed position, the first signal will be a punch read by channel 242. Channel 242 sends a signal through AND gate 258 to set the flip-flop circuits 246. A signal from flip-flop circuit 246 is transmitted to AND gate 260 and AND gate 262 which, in turn, set flip-flop circuits 248 and 250. The absence of a punch in channels 232 and 234 insures that the signal from the NO lines of channels 232 and 234 pass through AND gates 260 and 262 with the signal from flip-flop circuit 246. Flip-flop circuits 248 and 250 set the relays 266 and 292 to close the circuits to the spindle drive motor 14 and the spindle position motor or spindle auxiliary motor 22 respectively. At the end of each turn; i.e., a full stroke of the stylus, contactor switch 288 is opened and a signal is returned to the tape readout and flip-flop circuit 248 to insure continuous reading of the tape. As the tape continues to read with none of the channels punched, the signals from flip-flop 246 and channels 232 and 234 continue to set flip-flops 248 and 250 intermittently to energize the spindle drive motor 14 and spindle position motor 22.

Succeeding tape lines have only the sprocket hole punched; hence, the stop 62 is in the up or interrupt position and the winding operation continues until a tape signal is received.

As the cycle approaches the point at which a commutator pullout must be made, a punch in the tape in channel 232 opens the NO circuit and shuts off the signal which sets flip-flop 248. Coincident therewith, the signal from the contactor switch 276 passes through the OR gate 278 to clear flip-flop circuit 248. The spindle drive motor 14 is stopped by the energy stored in capacitor 268. The overrunning clutch 222, best seen in FIG. 9, enables the spindle assembly 4 to continue rotating by virtue of the spindle position motor 22. As the tape continues to be read, the spindle position motor 22 is deenergized by a signal resulting from a punch in the tape at channel 234 whereby the NO circuit is opened. The signal from channel 234 to AND gate 262 is thereby interrupted while the signal from the contact switch 288 passes through OR gate 282 to close the flip-flop circuit 250.

Indexing of the pin jig 70 is the next machine function. The tape command to index will have channels 232, 234, 236 and 240 punched. The spindle drive motor 14 will remain disabled and the signal from channel 240 will set flip-flop 254, the output of which will apply a set signal to flip-flop 250 through OR gate 280 and AND gate 262 causing the spindle position motor 22 to rotate until a feedback signal from contactor switch 300 indicates that the stylus rod 10 is in the fully retracted position. This signal will reset flip-flop 250 through OR gate 282 and will also clear flip-flop 254. The simultaneous application of the ram-retracted signal plus the hole-punch signals from channels 232, 234 and 236 to AND gate 284 will set flip-flop 256 through OR gate 286, thus energizing relay 306 through relay driver 304 thereby applying power to the index motor 134. The index motor 134 will make one revolution at which point flip-flop 256 will be reset, the index motor 134 will be braked to a stop by energy in capacitor 308 and a signal will be delivered to OR gate 318 causing the tape reader to advance to the next punched character.

The next command will be a command to make the commutator pullout. This is accomplished by punching channel 236 which retracts the air cylinder and stop 52, allowing a full stroke of the stylus rod 10 so that the armature wire passes around one of the commutator pullout pins 198. Succeeding tape commands will have only the sprocket holes punched and hence the stop 52 will return to the UP or interrupting position and the spindle drive motor 14 will continue to operate, laying down pairs of armature wires as before.

The entire sequence will continue until all the pullout pins have been traversed by the stylus 12 and until the winding form has rotated to the initial starting position of the winding. At this point, one final stroke with the stop 52 in the DOWN position will be made, allowing the stylus to return to the initial starting position. This final command character will also have channel 244 punched. Channel 244 will clear flip-flop 246 and subsequently flip-flops 248 and 250 through OR gates 278 and 282, respectively, thereby disabling the spindle drive motor 14 and ending the operation. Upon removal of the winding and replacement of the winding tool, it is only necessary to advance the tape to the initial starting position to begin a new winding.

To begin operation of the machine, the stripper plate 190 is mounted on the pin jig base 188 such that the three rows of pins 194, 196, and 198 project through the rows 200, 202 and 204 respectively, as shown in FIGS. 14 and 15. Next, the composite assembly of the pin jig base 188 and stripper plate 190 are placed on the turret spider 102 (FIG. 1). Holddown clamps 220 which are located on each of the arms of the turret spider 102 are then clamped over the pin jig baseplate 188 to secure the pin jig baseplate 188 and stripper plate 190 to the turret spider 102. The pressure and support ring 192 is then placed over the stripper plate 190 to reset between the outer and intermediate rows of pins. The holes 212 and 214 in the pressure and support ring 192 are aligned with the retaining posts 138 and 140 which depend from the support arm 80 of the support structure 72. Thus arranged, the stripper plate 190 and pin jig base 188 must rotate with the turret assembly while the pressure and support ring 192 remains stationary.

Next, the stylus 12 is threaded manually with insulated copper wire from the wire dispensing spool 76 and the end of the copper wire is secured to the center of the stripper plate 190.

Alignment of the holes 212 and 214 with the retaining posts 138 and 140 necessarily locks the stylus clearance slot 208 in alignment with the stylus 12, to thereby insure the passage of the wire dispensing stylus 12 as it reciprocates.

The main motor 14 is then signaled to begin rotation of the scotch-yoke 8 and, as a concomitant thereof, the turret spider 102 begins rotating by means of the synchronized power transmission assembly, best seen in FIG. 16. As the baseplate or rotating table 42 of the scotch-yoke rotates (FIG. 12), the cam follower 150 attached to the reciprocating plate 50 follows the cam slot 44 and provides reciprocating harmonic motion to the stylus rod 10. In addition, the stop 30 on the stylus rod 10 engages the pneumatically operated stop 172, thereby limiting the length of travel of the stylus 12 to a point between the rows of pins 194 and 196 on the pin jig assembly as the rotation of the scotch-yoke 8 drives the reciprocating block 50 forward to overcome the energy in the spring 36. Each stroke of the stylus rod 10 is accompanied by a slight rotation of the turret assembly as a result of the synchronized power transmission system. Consequently, as the stylus 12 passes beyond the stylus clearance slot 208 in the pressure and support ring 192 to the right of one of the pins in the intermediate row, pin 196a, for instance, the turret assembly rotation will cause the pin 196a to move into engagement with the insulated copper wire, as seen in FIG. 17 A--D, while the stylus 12 is held between the intermediate row of pins 196 and the inner row 198. On the return stroke, the stylus 12 will pass on the right of the pin 196b, the pin adjacent to pin 196a thereby weaving the conductor wire around the inside of two of the intermediate pins.

At the same time, the spindle shaft 158 is transmitting power through the change gear assembly 168 to the transmission shaft 120 which causes the turret assembly to continually depress (FIG. 16).

The pattern of winding the conductor wire on the pins continues until a specific predetermined number of armature loops have been made. When the cycle is complete, a signal is given to depress the stop 172 to allow the stylus rod 10 a stroke of full unimpeded travel. During this stroke, the stylus 12 and conductor wire pass to the right of one of the inside pins, such as 198a, and on the return stroke pass on the other (left) side of the pin 198a since the rotation of the turret assembly has caused the pin 198a to move through the path of the stylus stroke.

Indexing of the turret to provide a starting point for laying down the conductor wire adjacent to the starting point of the first pattern is then necessary. To effect this, the machine must be stopped. Accordingly, a signal is given to the main motor 14 to brake the motor at some point prior to the end of the cycle. At this time, the small stylus drive motor 22 continues to drive the stylus. When an absolute cessation of the stylus stroke is necessary, the small stylus motor 22 is also stopped. At that point, the turret index motor 134 is signaled to become engaged. (FIG. 18) The turret index motor then rotates the turret shaft 86 through the path provided by the change gear assembly 108 and worm gear assembly 116--110. After rotation of the turret through an angle corresponding to one pin pitch of the pin jig plate, the turret index motor 134 is deenergized and thereby locks the worm gear 110 in place. The turret drive shaft 86 having been rotated a few degrees while the transmission shaft 58 is fixed, will now provide a new set of pins on which the conductor wire can by systematically wound. With the worm gear 94 now locked in place, any subsequent motion of the turret assembly must come from the power transmission shaft 58 which is driven by the main motor 14 through a transmission system that includes the spindle shaft 158. (FIG. 16)

The operation is repeated for the desired number of armature turns including a commutator pullout, and upon completion of that step, the main motor is again stopped and the turret assembly indexed to start a subsequent winding of the coil. It should be noted that indexing of the turret can be made after any desired number of armature turns. Similarly, the commutator pullout can be made at any time in the operation and need not occur immediately before the indexing step.

The machine 2 is inherently versatile and capable of adaptation for the use of copper wire of a wide variety of gauges and an infinite variety of wire-wound armature patterns.

As best seen in FIG. 16, each of the change gear assemblies provide the machine with versatility to afford an infinite variety of winding patterns for the wire-wound armature.

Change gear assembly 160 fixes the rotation of the turret spider and pin jig base relative to the rotation of the spindle. Consequently, by replacing idler gear 160b with a smaller or larger gear, the speed of driven gear 160c can be varied.

Similarly, change gear assembly 168 fixes the rate of depression of the turret spider and pin jig base relative to the speed of the spindle. Hence, by varying the size of the idler gear 168b, the speed of the driven gear 168c can be varied.

The change gear assembly 108 determines the rate of turret index during the time the index motor is energized. Therefore, a change in the size of the idler gear 108b will vary the rate at which the driven gear 108c is rotated.

FIGS. 17A--17D illustrate the step formation of an armature winding for an eight pole machine including 117 armature coils and nine commutator segments. The winding is formed about the pin jig. The intermediate row of pins is designated 196a--196aa, and the outer row of pins is likewise designated 194a--194aa, there being 27 pins in both rows 194 and 196. The tabs for connection to the commutator segments are designated 198A--198I in the order of connection, there being nine pins in row 198.

Since the armature is for an eight pole machine, each armature loop includes four armature coils. Since there are 27 positioning pins each armature coil spans approximately eight positioning pins. Since there are 117 coils and nine commutator segments, every 13th coil is connected to the commutator.

The armature winding commences by attaching the insulated wire to one of the commutator connection pins designated as pin 198a. Pin 198a is in radial alignment with the first set of positioning pins 196a and 194a. The winding then passes outside positioning pins 196b, 194c, 194d and 194e in succession. The first armature coil is then completed by passing the wire inside pin 196g.

Next, the second armature coil is formed by passing the wire inside pin 196h, outside pins 194j--194l, and inside pin 196n.

The winding continues by then forming the third and fourth armature coils by passing inside pin 196o, outside pins 1941--194s, inside pins 196u--196v, outside pins 194x--194z and inside pin 196a. At this point the first armature loop spanning 360.degree. is completed as is illustrated in FIG. 17A.

The second armature loop is in registry with the first armature loop and is formed following the same sequence around the positioning pins as shown in FIG. 17B. The third armature loop is also in registry as well as the first coil of the fourth armature loop. The winding as it appears after formation of three and one-quarter armature loops (13 coils) is shown in FIG. 17C. Each of the 13 coils in the first group are in registry with one another and follow the same pattern about the positioning pins.

A commutator pullout is formed following the first group of 13 coils by passing the winding around tab 198b. At this point the winding is also indexed so that the second group of 13 coils will lie in positions adjacent the first group.

The winding progresses by passing outside pin 196h, outside pins 194i--194k, inside pins 196m and 196n, outside pins 194p--194r, inside pins 196t and 196u, outside pins 194w--194y and inside pin 196aa. The winding as it then appears after completion of four armature loops (16 coils), including three coils of the second group, is shown in FIG. 17D.

The preferred embodiment invention has been described, however, any minor variations which come within the spirit of the invention are, or course, comprehended thereby.

Claims

What I claim is:

1. An apparatus for making wire-wound disc armatures comprising:

a rotatable pin jig support shaft;

a turret spider fixedly mounted on the rotatable pin jig support shaft;

a pin jig;

means for mounting the pin jig on the turret spider;

a wire dispensing reciprocating mechanism adapted for substantially radical movement with respect to the pin jig;

a stylus mounted on the leading edge of the reciprocating mechanism through which the insulated wire is adapted to pass;

means to drive the reciprocating mechanism such that the stylus moves radially into and out of the pin jig area;

means to rotate the pin jig as the stylus is travelling radially into and out of the pin jig; and

means to synchronize the rotation of the pin jig and reciprocation of the reciprocating mechanism;

whereby the insulated wire is drawn from the reciprocating stylus by the pins on the pin jig as the pin jig rotates to arrange the insulated wire on the pin jig in the form of a wire-wound disc armature.

2. An apparatus for making wire-wound disc armatures comprising:

a rotatably mounted pin jig on which to wind insulated conductor wire into a disc armature;

a wire dispensing reciprocating mechanism adapted for substantially radial movement with respect to the pin jig for delivering the insulated wire to the pin jig;

means to drive the reciprocating mechanism; and a mechanical power transmission assembly driven by the means to drive the reciprocating mechanism and arranged to rotate the pin jig to thereby provide synchronization of the rotation of the pin jig and reciprocation of the reciprocating mechanism;

whereby the insulated wire is drawn from the reciprocating stylus by the pins on the pin jig as the pin jig rotates to arrange the insulated wire on the pin jig in the form of a wire-wound disc armature.

3. An apparatus as in claim 1 wherein the means for synchronizing the rotation of the pin jig and the reciprocation of the wire dispensing mechanism is a mechanical power transmission assembly driven by the means to drive the reciprocating rod and arranged to rotate the pin jig.

4. An apparatus as in claim 3 wherein the means to drive the reciprocating rod is comprised of a power source; a rotating scotch-yoke support shaft driven by the power source; a gear formed on the rotating support shaft; a scotch-yoke mounted on the rotating scotch-yoke support shaft; and mounting means to mount the reciprocating rod on the scotch-yoke for reciprocation and wherein the mechanical power transmission assembly driven by the means to drive the reciprocating rod and arranged to rotate the pin jig is comprised of a power transmission shaft; a driven gear fixedly mounted on the power transmission shaft adapted to engage the gear formed on the rotating support shaft mounting the scotch-yoke; a drive gear mounted on the power transmission shaft; a rotatably mounted cylindrical pin jig driven shaft arranged axially with the rotatable pin jig support shaft; a driven gear formed on the rotatably mounted cylindrical pin jig drive shaft adapted to engage the drive gear mounted on the power transmission shaft; and means to couple the pin jig drive shaft to the pin jig support shaft.

5. An apparatus as in claim 3 wherein the means to drive the reciprocating rod is comprised of a power source, a rotating scotch-yoke support shaft driven by the power source and a scotch-yoke fixedly mounted on the scotch-yoke rotating support shaft and coupled to the reciprocating rod to convert the rotational movement of the rotating shaft to reciprocating movement of the reciprocating rod; and

wherein the mechanical power transmission assembly arranged to rotate the pin jig is comprised of:

a gear formed on the rotating scotch-yoke support shaft;

a first power transmission shaft;

a gear arranged on the first power transmission shaft to mate with the gear on the rotating scotch-yoke support shaft;

a first change gear assembly having a drive gear fixedly mounted on the first power transmission shaft, a driven gear and an idler gear adapted to engage both the drive gear and the driven gear;

a second power transmission shaft having the driven gear of the first change gear assembly fixedly mounted thereon;

a drive gear fixedly mounted on the second power transmission shaft;

a third power transmission shaft;

a worm gear arranged on the third power transmission shaft;

a driven gear fixedly mounted on the third power transmission shaft adapted to engage the drive gear on the second power transmission shaft;

a pin jig drive shaft;

a worm gear fixedly mounted on the pin jig drive shaft and arranged to engage the worm gear on the third power transmission shaft; and

means to couple the pin jig drive shaft to the pin jig support shaft.

6. An apparatus as in claim 5 wherein the third power transmission shaft is comprised of:

a first shaft section;

a differential gear assembly comprised of first, second, third and fourth bevel gears arranged in a box, the first bevel gear being axially aligned with the third power transmission shaft and connected to the first shaft section, the second bevel gear being in axial alignment with the first bevel gear;

a second shaft section axially aligned with the first shaft section and rigidly attached to the second bevel gear on the differential gear assembly;

a worm gear fixedly mounted on the second shaft section;

a third shaft section fixed to the rotating differential gears and arranged coaxially within the second shaft section and the second bevel gear and which mounts the worm gear adapted to engage the worm gear on the pin jig drive shaft; and

means to rotate the worm gear mounted on the second shaft section.

7. An apparatus as in claim 6 further comprising means to lock the worm gear mounted on the second shaft section from rotation.

8. An apparatus as in claim 4 wherein the means to couple the pin jig drive shaft to the pin jig support shaft is an arm extending transversely from the pin jig drive shaft, which arm has a hole therein and a spider, which post fits slidably in the hole in the arm extending transversely from the pin jig drive shaft.

9. An apparatus for making wire-wound disc-type armatures comprising:

a rotating turret assembly;

a pin jig arranged on the rotating turret assembly for rotation therewith having a plurality of strategically located pins projecting therefrom;

a reciprocating rod;

a stylus mounted on the reciprocating rod through with conductor wire can pass to wind on the pin jig to form an armature;

means to rotate the turret assembly;

means to drive the reciprocating rod for radial movement with respect to the rotating pin jig;

means for locking the reciprocating rod from movement; and

means for rotating the turret assembly independently of the reciprocating rod when the reciprocating rod is locked.

10. An apparatus as in claim 9 wherein the means for rotating the turret assembly when the reciprocating rod is locked from movement is a mechanical power transmission assembly comprised of:

an index motor;

a first turret index power transmission shaft driven by the turret index motor;

a second turret index power transmission shaft driven by the first turret index power shaft;

means for coupling the first turret index power transmission shaft and the second turret index power transmission shaft; and

means for coupling the second power transmission shaft to the means for driving the rotating turret assembly.

11. An apparatus as in claim 9 wherein the means to rotate the turret assembly is a power transmission assembly driven by the means to drive the reciprocating rod and the means for rotating the turret assembly when the reciprocating rod is locked from movement is a mechanical power transmission assembly comprised of:

an index motor;

a first turret index power transmission shaft driven by the turret index motor;

a second turret index power transmission shaft driven by the first turret index power shaft;

means for coupling the first turret index power transmission shaft and the second turret index power transmission shaft; and

means for coupling the second power transmission shaft to the power transmission assembly which drives the rotating turret assembly.

12. An apparatus as in claim 11 wherein the power transmission assembly which drives the rotating turret assembly is comprised of:

a power source;

a rotation support shaft driven by the power source;

a scotch-yoke mounted on the rotating support shaft adapted to mount the reciprocating rod for reciprocation;

a gear on the rotating support shaft;

a first power transmission shaft;

a gear fixedly mounted on the first power transmission shaft arranged to mate with the gear on the rotating support shaft;

a second power transmission shaft;

means to couple the first and second power transmission shafts;

a third power transmission shaft comprised of a first shaft section; a differential gear assembly comprised of first, second, third and fourth bevel gears in a box, the first bevel gear being axially aligned with and connected to the first shaft section, the second bevel gear being in axial alignment with the first bevel gear, a second shaft section aligned axially with the first shaft section and rigidly connected to the second bevel gear, a third shaft section fixed to the rotating third and fourth bevel gears and arranged concentrically within the second shaft section; a worm gear mounted on the third shaft section;

a rotatably mounted support shaft for the pin jig and a worm gear mounted on the rotatably mounted support shaft for a pin jig.

13. An apparatus as in claim 10 wherein the means for coupling the first turret index power transmission drive shaft and second turret index power transmission drive shaft is a change gear assembly comprised of:

a drive gear mounted on the first turret index power transmission shaft;

a driven gear arranged on the second turret index transmission shaft; and

and idler gear arranged to engage both the driven and drive gears.

14. An apparatus as in claim 12 wherein the means to couple the first turret index power transmission drive shaft and a second turret index power transmission drive shaft is a change gear comprised of:

a drive gear mounted on the first turret index power transmission shaft;

a driven gear arranged on the second turret index transmission shaft; and

an idler gear arranged to engage both the driven and drive gears.

15. An apparatus for making wire-wound disc armatures comprising:

a rotating turret assembly;

a pin jig having a plurality of strategically located pins projected therefrom on which conductor wire is wound to form an armature and which pin jig is arranged to be mounted for rotation on the rotating turret assembly;

a reciprocating rod;

a stylus mounted on the end of the reciprocating rod through which conductor wire can pass to wind on the pin jig;

means to rotate the rotating turret;

means to drive the reciprocating rod for radial movement with respect to the rotating pin jig; and

means to vary the length of the reciprocating stroke.

16. An apparatus as in claim 15 wherein the means for varying the length of the reciprocating stroke is a stop assembly comprised of a first stop member fixedly mounted on the reciprocating rod; a second stop member; and means to selectively locate the second stop member in the path of the first stop member.

17. An apparatus as in claim 16 further comprising means for mounting the reciprocating rod for slidable movement.

18. An apparatus as in claim 16 further comprising a rotating support shaft;

a scotch-yoke mounted on the rotating support shaft;

a mounting block slidably mounted on the scotch-yoke having a passage therein in which the reciprocating rod is slidably mounted;

a first sleeve member fixedly mounted on the reciprocating rod nearest the rotating turret assembly;

a second sleeve member fixedly mounted on the reciprocating rod on the opposite side of the mounting block from the first sleeve member; and

spring means arranged to bias the mounting plate against the second sleeve member.

19. An apparatus as in claim 16 wherein the means to selectively locate the second stop member in the path of the first stop member is an actuator piston on which the second stop member is mounted.

20. An apparatus as in claim 18 wherein the means to selectively locate the second stop member in the path of the first stop member is an actuator piston on which the second stop member is mounted.

21. An apparatus for making wire-wound disc armatures from conductor wire comprising:

a reciprocating rod having a stylus through which the conductor wire can pass;

a rotating turret assembly;

a pin jig having a plurality of strategically located pins extending therefrom, which pin jig is rigidly mounted on the rotating turret for rotation;

means for driving the reciprocating rod such that the stylus passes beyond strategically located pins on the pin jig;

means for rotating the turret such that the movement of the pins draws the conductor wire through the stylus onto the pin jig; and

means for holding the conductor wire on the pin jig.

22. An apparatus as in claim 21 wherein the pin jig is comprised of a base plate;

an outer circular row of pins;

an intermediate circular row of pins arranged concentrically with the outer circular row of pins; and

an inner circular row of pins arranged concentrically with the outer circular row of pins.

23. An apparatus as in claim 22 wherein the means for holding the conductor wire on the pin jig is an annular plate having an inside diameter slightly larger than the diameter of the circle formed by the intermediate row of pins and an outside diameter slightly smaller than the circle formed by the outer row of pins; the annular ring being arranged to fit on the pin jig to occupy the area between the intermediate and the outer circular rows of pins; and wherein the annular pressure and support ring is fixedly mounted and has a slot formed therein in alignment with the path of the stylus on the reciprocating rod to allow communication between the stylus and the pins on the pin jig.

24. An apparatus as in claim 23 wherein the pressure and support ring is further provided with a ramp which extends from the stylus opening therein to the bottom of the pressure and support ring.

25. An apparatus for making wire-wound disc armatures comprising:

a rotating turret assembly;

a pin jig mounted on the rotating turret for rotation therewith;

a reciprocating rod;

a stylus mounted on the reciprocating rod through which conductor wire can pass;

means to rotate the rotating turret such that the movement of the pins draws the conductor wire through the stylus onto the pin jig to form an armature;

means to drive the reciprocating rod such that the stylus moves radially with respect to the pin jig; and

means to lower the pin jig as wire accumulates thereon.

26. An apparatus as in claim 25 wherein the means for lowering the pin jig as wire accumulates thereon is a pin jig lowering power transmission assembly driven by the means to drive the reciprocating rod.

27. An apparatus as in claim 26 wherein the pin jig lowering power transmission assembly is comprised of:

a worm gear formed on the means to drive the reciprocating rod;

a first pin jig lowering power transmission shaft;

a worm gear formed on the first pin jig lowering power transmission shaft which engages the worm gear on the means to drive the reciprocating rod;

a gear fixed on the first pin jig lowering power transmission shaft;

a second pin jig lowering power transmission shaft;

a first gear mounted on the second pin jig lowering power transmission shaft adapted to mate with the gear on the first pin jig lowering power transmission shaft;

a vertically movable support shaft for the rotating turret; and

means to couple the rotating turret with the second pin jig lowering power transmission shaft whereby reciprocation of the reciprocating rod lowers the pin jig.

28. An apparatus as in claim 25 further comprising means to manually move the pin jig vertically.

29. An apparatus as in claim 27 wherein the means to couple the rotating turret with the second pin jig lowering power transmission shaft is comprised of a second gear on the second pin jig lowering power transmission shaft; and idler gear adapted to engage the second gear on the second pin jig lowering power transmission shaft; a third pin jig lowering power transmission shaft; a first gear on the third pin jig lowering power transmission shaft, which first gear mates with the idler gear; a second gear on the third pin jig lowering power transmission shaft; a gear on the vertically movable support shaft for the rotating turret, which gear is adapted to mate with the second gear on the third pin jig lowering power transmission shaft.

30. An apparatus as in claim 25 further comprising means to manually move the pin jig vertically.

31. An apparatus as in claim 30 wherein the means for manually moving the pin jig vertically is comprised of:

a slidably mounted shaft to mount the idler gear;

spring means arranged to bias the idler gear into engagement with the first gear on the third pin jig lowering power transmission shaft; and

means to overcome the spring force to disengage the idler gear from the third pin jig lowering power transmission shaft.