U.S. patent number 3,892,158 [Application Number 05/475,861] was granted by the patent office on 1975-07-01 for angularly adjustable punch adaptor.
This patent grant is currently assigned to Producto Machine Company. Invention is credited to Gerard Gaston Frans Smeets.
United States Patent |
3,892,158 |
Smeets |
July 1, 1975 |
Angularly adjustable punch adaptor
Abstract
An angularly adjustable adaptor for sheet material punching
tools consisting of a first cylindrical member adapted to seat in
the ram or table of a punch press and keyable in a plurality of
angular positions with respect thereto. A second member
telescopically insertable into the first member and keyable in a
plurality of positions with respect to the first member. The second
member being adaptable to hold an active punching member.
Inventors: |
Smeets; Gerard Gaston Frans
(Peterborough, CA) |
Assignee: |
Producto Machine Company
(Bridgeport, CT)
|
Family
ID: |
4098241 |
Appl.
No.: |
05/475,861 |
Filed: |
June 3, 1974 |
Foreign Application Priority Data
Current U.S.
Class: |
83/699.31;
83/640 |
Current CPC
Class: |
B21D
28/34 (20130101); Y10T 83/8867 (20150401); Y10T
83/9483 (20150401) |
Current International
Class: |
B21D
28/34 (20060101); B26f 001/14 () |
Field of
Search: |
;83/640,641,699,700 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Meister; J. M.
Attorney, Agent or Firm: Van Steinburg; C. E.
Claims
The embodiments of the invention in which an exclusive property or
privilege is claimed are defined as follows:
1. An angularly adjustable adaptor for a punch member comprising a
first cylindrical member mountable in a supporting surface of a
punch press and provided with plurality of circumferentially spaced
slots substantially parallel to the axis of the cylinder, the slots
are individually selectable to cooperate with a key member to fix
the position of the first member with respect to the supporting
surface, a plurality of radial slots are provided on one end
surface of the first member, a second cylindrical member is mounted
within the first member, the second member having an end surface
provided with a plurality of radial slots at least individually
alignable and keyable with respect to each end slot of the first
member, the second member, being adapted to hold therein an active
punch member in a predetermined angular position with respect to
the second member.
2. The adaptor as claimed in claim 1 wherein the circumferential
slots of the first member are circumferentially spaced by an angle
which is an integral subdivision of 360.degree..
3. The adaptor as claimed in claim 1 wherein the angular spacing
between the end slots of the first member differ by an integral
subdivision of the angle between the circumferential slots.
4. The adaptor as claimed in claim 1 wherein the angular spacing
between the circumferential slots, is an integral subdivision of
360.degree., the angular spacing between the end slots of the first
member differ by an amount which is an integral subdivision of the
angle between circumferential slots of the first member and wherein
the angular spacing between the end slots of the second member
encompass an angle which is equal to an integral number of angular
spacings between the circumferential slots plus the total angular
difference between the end surface slots of the first member plus
one further such angular difference spacing.
5. An angularly adjustable adaptor for an active punching member
for use in a sheet material punching press comprising a first
cylindrical member adapted to be mounted vertically in a supporting
surface of the punch press in a selected one of a plurality of
related angular positions with respect thereto, the angular
positions each being a sub-multiple of 360.degree., a second
cylindrical member insertable into the first cylindrical member in
one of a plurality of angular positions differing by an angle which
is a sub-multiple of the angular spacing of the selectable
positions of the first cylindrical member, said second cylindrical
member being adapted to hold an active punch member therein in a
fixed angular position.
6. An angularly adjustable adaptor for mounting an active punch
member in a sheet metal punching machine comprising a first
cylindrical member having axially aligned circumferential slots
spaced by equal angles about the circumference of the cylindrical
member and being keyable with respect to a fixed position of a
mounting surface of the punching maching, the first member being
provided with radial slots on one end surface thereof, the radial
slots being spaced by angles which differ from each other in
sequence by an angle which is a sub-multiple of the angular spacing
of the circumferential slots, a second cylindrical member
insertable within the first cylindrical member and provided with a
plurality of end surface slots spaced by angles which equal (N+1) d
degrees plus an integral multiple of the angular spacings of the
circumferential slots, where N is the number of end surface slots
of the first cylinder and d is the difference angle between
adjacent ones of these end slots, each of the end slots of the
first cylindrical member being keyable with respect to each end
slot of the second cylindrical member and the second cylindrical
member being adapted to hold an active punching member therein in a
fixed position.
7. The adaptor as claimed in claim 6 wherein the circumferential
slots of the first cylinder are spaced by 20.degree. about the
circumference thereof, the end slots of the first cylindrical
member are five in total spaced by 46.degree., 92.degree.,
138.degree. and 184.degree. respectively and the end slots of the
second cylindrical member are spaced by 45.degree..
8. The adaptor as claimed in claim 6 wherein one of the end slots
of the first cylinder corresponds in radial position with one of
the circumferential slots.
Description
BACKGROUND OF INVENTION
This invention relates to an adaptor for punching tools which
provides the facility of positioning co-operating punch and die
members in a plurality of closely spaced angular positions.
In known punch systems the punch adaptor may be provided with, for
instance, four internal splines and the punch member per se is also
provided with four external mating splines which, when the punch is
inserted in the adaptor, prevent relative angular movement.
If the splines are spaced 90.degree. apart, it is possible to
obtain four angularly spaced positions of a punch 90.degree.
apart.
This angular adaptability is not always sufficient and it has been
necessary to have on hand a number of punches with similarly shaped
active punch faces but with different angular relationships with
respect to the splines.
In an effort to improve on this situation, punch adaptors have been
provided with a number of possible angular positions with respect
to a press ram or table, but these positions have been rather
widely spaced. As an example of such a device, reference can be
made to U.S. Pat. No. 3,086,419 - Fox - issued Apr. 23, 1963.
However, with increasing complexity and miniaturization of
apparatus, spacings and angular relationships have become critical
and it is very desirable to have the facility to position a
contoured punch face readily at one of a number of angular
positions with respect to a punch press work table. The same
reasoning of course applies to the co-operating die member and
adaptor and in the further descriptive statements made with respect
to adaptors are equally applicable to punch and die adaptors alike
taking into account that the angular relationships must be
mirror.
SUMMARY OF INVENTION
According to the present invention an agularly adjustable adaptor
for a punch member comprises a first cylindrical member mountable
in a supporting surface of a punch press and provided with
plurality of circumferentially spaces slots substantially parallel
to the axis of the cylinder, the slots are individually selectable
to co-operate with a key member to fix the position of the first
member with respect to the supporting surface, a plurality of
radial slots are provided on one end surface of the first member, a
second cylindrical member is mounted within the first member, the
second member having an end surface provided with a plurality of
radial slots at least individually alignable and keyable with
respect to each end slot of the first member, the second member,
being adapted to hold therein an active punch member in a
predetermined angular position with respect to the second
member.
It is therefore an object of the present invention to provide a
punch or die adaptor which provides for easy angular rotational
adjustment of the adaptor to any one of a multiple of angular
positions, for instance, angular positions spaced 1.degree. apart
about a complete circle.
It is a further object of the invention to provide an adaptor that
is simple to use and economical to manufacture.
Further objects and advantages of the adaptor according to the
present invention with become apparent as the description proceeds
with reference being made to the figures of the drawing in
which;
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows an exploded view of an embodiment of the invention as
applied to a punch adaptor.
FIG. 2 shows an assembled view of the components of FIG. 1 and,
FIG. 3 shows an assembled view of an adaptor mounted in a
supporting surface of a punch press.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the Figure designation number 1 refers to a first
cylindrical member which can be termed the main body member of the
adaptor, the part of the mechanism which is secured, at least
angularly, with respect to the press ram table. Numeral 2
designates a second cylindrical member which can be termed an
intermediate member which provides an interconnection between the
main body member 1 and a punch member 3. The term "punch member"
can be regarded as referring either to a punch per se or the die
with which a punch co-operates during the punching action.
Adaptor main body 1 is provided with a cylindrical body portion 4
and a larger diameter rim portion 5 located at one end of the
cylinder part. An inner ledge 6 is provided and may be constituted
by the end face of cylinder portion 1, the portions preferably
forming one integral part. The inner ledge 6 acts as a stop or
locating surface for part 2 of the adaptor. The lower surface 7 of
rim 5 acts as a locating surface when, for instance, the adaptor
part 5 is inserted into a counter-sunk hole in a worktable of a
punch press with which the punchint adaptor may be used. The upper
surface 8 of rim 5 preferable is flush with the surface of the
punch press worktable when the adaptor is mounted therein.
The outer surface of rim 5 is provided with a plurality of
circumferentially spaced slots 9a, 9b, 9c, etc., shown spaced 20
apart, which are designed to co-operate with a key member 10, see
FIG. 3, to fix the adaptor at a desired angular position with
respect to the worktable or other supporting surface in which the
adaptor is mounted. Key 10 may be integral with the supporting
surface. It will be obvious that any particular outer rim slot 9
may be positioned to co-operate with key 10. The calibrations shown
associated with slots 9 are for illustration of the use of the
invention and will be referred to subsequently.
The upper surface of rim 5 is provided with a plurality of slots
11a, 11b, 11c, 11d, 11e, one of which, 11a, coincides in location
with one of the outer slots 9a. Slots 11a, 11b, 11c, 11d and 11e
are preferably spaced 46.degree., 47.degree., 48.degree. and
49.degree. apart respectively. Each slot 11 is provided with a
screw accommodating hole 12 so that a further key 13 may be secured
thereto, see FIG. 3. Key 13, as shown in FIG. 3, co-operates with
surface slots 18 of a second cylindrical member 2 which is similar
in configuration to main member 1 and telescopically insertable
thereinto with a close fit as shown best in perspective in FIG.
2.
Intermediate member 2 is supplied with an internal key 17, which
co-operates with a key slot 19 on the head portion of an active
punch member 3 shown in part only.
OPERATION OF THE INVENTION
The use of the adaptor, according to the invention, will now be
described with particular reference to FIG. 3.
Key 10, secured to the supporting surface 19, is shown in position
in slot 9b calibrated 60.degree.. If 0.degree. calibrated slot 9a
is considered the reference point of member 1 for angular rotation,
then the first cylindrical member 1 has been rotated clockwise
60.degree. with respect to the supporting surface reference or
0.degree. line designated O--O and shown as a dashed line.
Key member 13 is secured to member 1 at slot 9a, the 0.degree.
reference for the member, and member 2 has been rotated
anti-clockwise 90.degree. from the 0.degree. reference slot 18a of
member 2. Considering clockwise movement as being positive and
counter-clockwise as being negative, the angular position of member
2 with respect to reference line O--O can be represented by the
equation 60.degree. - 90.degree. = -30.degree..
Thus reference slot 18a of member 2 is positioned 30
counter-clockwise from reference line O--O of the supporting
surface. If key 13 were mating with slot 18b instead of 18c, the
angular position of member 2 with respect to reference line O--O
would be
60.degree. - 45.degree. = 15.degree.
or 15.degree. clockwise with respect thereto.
It will be seen that with key 10 at 60.degree., reference slot 9b
of member 1, and key 13 at slot 9a and using slots 18a, 18b, 18c
and 18d member 2 can be positioned at 60.degree., 15.degree.,
-30.degree., and -75.degree. with respect to reference line O.
By using slots 18d, 18e, 18f and 18g positions 180.degree.
displaced from these may be obtained. For instance, the 180.degree.
position related to the position shown in FIG. 3 is -30.degree. +
180.degree. = +150.degree. or conversely -30.degree. - 180.degree.
= -210.degree. which of course, is the same angular position with
respect to the reference line O--O. Also using other slots
45.degree., 90.degree. and 135.degree. related positions can be
obtained. For instance, with keys as shown in member 1 in FIG. 3
the following angular locations of member 2 can be obtained:
60.degree.
60.degree. - 45.degree. = 15.degree.
60.degree. - 90.degree. = -30.degree. = +330.degree.
60.degree. - 135.degree. = -75.degree. = +285.degree.
60.degree. - 180.degree. = -120.degree. = +240.degree.
60.degree. - 180.degree. - 45.degree. = -165.degree. =
+195.degree.
60.degree. - 180.degree. - 90.degree. = -210.degree. =
+150.degree.
60.degree. - 180.degree. - 135.degree. = -255.degree. =
+105.degree.
By moving key 10 to other slots 9, 20.degree. related position to
the above can be obtained - i.e. 35.degree., -10.degree.,
-100.degree., -145.degree. and -190.degree.. An examination of the
above and other possibilities will show that any angular position
between 0.degree. and 360.degree. spaced 5.degree. apart, may be
obtained for member 2 with respect to reference line O--O by proper
placement of keys 10 and 13.
In order that even smaller angular increments of displacement may
be achieved, slots 11b, 11c, 11d and 11e are supplied in member 1.
These slots are displaced clockwise from 0.degree. slot 11a by
46.degree., 92.degree., 138.degree. and 184.degree. so that by
adding, for instance, 92.degree. by using slot 11c and subtracting
90.degree. by using slot 18c and adding 90.degree. a clockwise
rotation of 2.degree. of member 2 with respect to member 1 may be
obtained. It is considered for illustration that the 0.degree.
reference position of member 2 with respect to member 1 exists when
key 13 is in slot 11a of member 1 and slot 18a of member 2. It will
now be obvious that any position between 0.degree. and 360.degree.
spaced by 1 angular increment, may be obtained for member 2 with
respect to reference line O--O.
Although the adaptor according to the invention has been described
with reference to obtaining 1.degree. increments of angular
displacement, it will be obvious that other particular
displacements may be provided in the embodiments of the invention
by those skilled in the art, which embodiments do not depart from
the spirit and scope of the invention as defined in the claims
appended hereto.
* * * * *