U.S. patent application number 09/768515 was filed with the patent office on 2001-06-07 for slotting cutter.
This patent application is currently assigned to Iscar Ltd.. Invention is credited to Eisen, Yaron, Satran, Amir.
Application Number | 20010002972 09/768515 |
Document ID | / |
Family ID | 11072315 |
Filed Date | 2001-06-07 |
United States Patent
Application |
20010002972 |
Kind Code |
A1 |
Satran, Amir ; et
al. |
June 7, 2001 |
Slotting cutter
Abstract
A slotting cutter and a method for constructing the slotting
cutter. The slotting cutter is structurally divided into two
portions, a central adapter portion and a cutter portion. The
central adapter portion is a disk with an F-type or S-type adapter.
The cutter portion is an annular ring provided with cutting insert
receiving pockets, or cartridge receiving pockets. The cutter
portion and a body portion are manufactured separately and combined
to form the slotting cutter by a heat shrinkage method.
Inventors: |
Satran, Amir; (Kfar Vradim,
IL) ; Eisen, Yaron; (Kfar Vradim, IL) |
Correspondence
Address: |
PENNIE & EDMONDS LLP
1667 K STREET NW
SUITE 1000
WASHINGTON
DC
20006
|
Assignee: |
Iscar Ltd.
P.O. Box 11
Tefen
IR
24959
|
Family ID: |
11072315 |
Appl. No.: |
09/768515 |
Filed: |
January 25, 2001 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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09768515 |
Jan 25, 2001 |
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09458673 |
Dec 10, 1999 |
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Current U.S.
Class: |
407/34 ;
407/46 |
Current CPC
Class: |
B23B 2240/28 20130101;
Y10T 407/192 20150115; B23P 15/34 20130101; Y10T 29/49902 20150115;
Y10T 83/9331 20150401; Y10T 29/49947 20150115; Y10T 407/1932
20150115; Y10T 29/49913 20150115; Y10T 407/1908 20150115; Y10T
83/9326 20150401; B23C 5/2226 20130101; Y10T 29/49865 20150115;
B23C 5/2234 20130101; Y10T 29/49895 20150115; B23C 5/08 20130101;
Y10T 407/1944 20150115; B23C 5/006 20130101; Y10T 409/30952
20150115; B23P 11/025 20130101; Y10T 403/48 20150115; Y10T 83/9464
20150401 |
Class at
Publication: |
407/34 ;
407/46 |
International
Class: |
B23C 005/20; B26D
001/12 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 29, 1998 |
IL |
IL 127827 |
Claims
1. A slotting cutter comprising a cutter portion affixed to a body
portion; the body portion comprising a disk having an outer
peripheral surface with a first diameter and a central portion
provided with an adapter; the cutter portion comprising an annular
ring having an inner surface with a second diameter and an outer
portion provided with recesses; the cutter portion being formed of
a -material having thermal characteristics such that the
application of heat thereto causes thermal expansion thereof, thus
allowing the support member of the body portion to be positioned
inside the cutter portion, and cooling thereof causes thermal
contraction thereof, whereby the cutter portion is rigidly affixed
to the body portion.
2. The slotting cutter in accordance with claim 1, wherein the
first diameter is larger than the second diameter.
3. The slotting cutter in accordance with claim 1, wherein the
slotting cutter is provided with an axial securing arrangement for
ensuring that the cutter portion is secured against axial movement
relative to the body portion.
4. The slotting cutter in accordance with claim 3, wherein the
axial securing arrangement comprises at least two countersunk
through bores extending from the front face of the support member
to the outer peripheral surface thereof that mate, when the body
portion is positioned inside the heated cutting portion, with at
least two depressions provided on the inner surface of the cutter
portion and countersunk head screws screwed into the at least two
countersunk through bores and engaging a rear section of the at
least two depressions.
5. The slotting cutter in accordance with claim 4, wherein each
countersunk through bore has a longitudinal axis that makes an
acute angle .alpha. with a normal to the front face of the support
member.
6. The slotting cutter in accordance with claim 1, wherein the
slotting cutter is provided with a rotational securing arrangement
for ensuring that the cutter portion is secured against rotational
movement relative to the body portion.
7. The slotting cutter in accordance with claim 6, wherein the
rotational securing arrangement comprises a protrusion protruding
from the outer peripheral surface of the support member, which
protrusion engaging an indent on the inner surface of the cutter
portion.
8. The slotting cutter in accordance with claim 1, wherein the
recesses are insert receiving pockets.
9. The slotting cutter in accordance with claim 1, wherein the
recesses are cartridge receiving pockets for receiving cutting
insert receiving cartridges.
10. The slotting cutter in accordance with claim 1, wherein the
slotting cutter is provided with right-hand cutting insert
receiving cartridges.
11. The slotting cutter in accordance with claim 1, wherein the
slotting cutter is provided with left-hand cutting insert receiving
cartridges.
12. The slotting cutter in accordance with claim 1, wherein the
slotting cutter is provided with both left-handed and right-hand
cutting insert receiving cartridges.
13. The slotting cutter in accordance with claim 1, wherein the
adapter of the slotting cutter is an S-Type adapter.
14. The slotting cutter in accordance with claim 1, wherein, the
adapter of the slotting cutter is an F-Type adapter.
15. A method for constructing a slotting cutter comprising the
steps of: providing a body portion comprising a disk having an
outer peripheral surface with a first diameter and a central
portion provided with an adapter; providing a cutter portion
comprising an annular ring having an inner surface with a second
diameter and an outer portion provided with recesses, the cutter
portion being formed of a material having thermal characteristics
such that the application of heat thereto causes thermal expansion
thereof; and affixing the cutter portion to the central body
portion by: applying heat to the to the cutter portion; positioning
the body portion inside the heated cutter portion; and allowing the
cutter portion to cool, thereby causing thermal contraction
thereof, whereby the cutter portion becomes rigidly affixed to the
body portion.
16. The method in accordance with claim 15, wherein the first
diameter is larger than the second diameter.
17. The method in accordance with claim 15, wherein the slotting
cutter is provided with an axial securing arrangement for ensuring
that the cutter portion is secured against axial movement relative
to the body portion.
18. The method in accordance with claim 17, wherein the axial
securing arrangement comprises at least two countersunk through
bores extending from the front face of the support member to the
outer peripheral surface thereof that mate, when the body portion
is positioned inside the heated cutter portion, with at least two
depressions provided on the inner surface of the cutter portion and
countersunk head screws screwed into the at least two countersunk
through bores and engaging a rear section of the at least two
depressions.
19. The method in accordance with claim 18, wherein each
countersunk through bore has a longitudinal axis that makes an
acute angle .alpha. with a normal to the front face of the support
member.
20. The method in accordance with claim 15, wherein the slotting
cutter is provided with a rotational securing arrangement for
ensuring that the cutter portion is secured against rotational
movement relative to the body portion.
21. The method in accordance with claim 20, wherein the rotational
securing arrangement comprises a protrusion protruding from the
outer peripheral surface of the support member, which protrusion
engaging an indent on the inner surface of the cutter portion.
22. The method in accordance with claim 15, wherein the recesses
are insert receiving pockets.
23. The method in accordance with claim 15, wherein the recesses
are cartridge receiving pockets for receiving cutting insert
receiving cartridges.
24. The method in accordance with claim 15, wherein the slotting
cutter is provided with right-hand cutting insert receiving
cartridges.
25. The method in accordance with claim 15, wherein the slotting
cutter is provided with left-hand cutting insert receiving
cartridges.
26. The method in accordance with claim 15, wherein the slotting
cutter is provided with both left-handed and right-hand cutting
insert receiving cartridges.
27. The method in accordance with claim 15, wherein the adapter of
the slotting cutter is an S-Type adapter.
28. The method in accordance with claim 15, wherein, the adapter of
the slotting cutter is an F-Type adapter.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to slotting cutters and a
method for constructing such slotting cutters.
BACKGROUND OF THE INVENTION
[0002] Slotting cutters can be left handed, right handed or
neutral, depending on the location of cutting inserts on the
slotting cutter's outer periphery. In addition they generally come
with two different types of adapter, referred to herein both in the
specification and claims as "S-type" and "F-t-ype" adapters. An
"S-type" adapter is a central opening centered at the slotting
cutter's axis of rotation, designed to receive an arbor connected
to a spindle. An "F-type" adapter is a generally cylindrical
central protrusion at the slotting cutter's central opening
constituting an arbor for connecting to a spindle.
[0003] A major problem in the cutting tool industry is that of
supply time. Typically, the conventional supply time for a slotting
cutter, from the time of order, is four to eight weeks. An obvious
way of reducing supply time to an absolute minimum would be to
manufacture all the various types of slotting cutters and store
them. As soon as an order is placed by a client for a given number
of slotting cutters, they are retrieved from storage and supplied
to the client. However, taking into account the many types of
slotting cutters that would have to be produced and stored (left
handed, right handed and neutral, with either "S-type" or "F-type"
adapters), such a simplistic approach has a disadvantage that it
would place heavy demands both on storage space and financial
investment.
[0004] It is an object of the present invention to provide slotting
cutters and a method for producing such slotting cutters in which
the supply time is considerably less than the conventional supply
time and in which the aforementioned disadvantage is reduced.
SUMMARY OF THE INVENTION
[0005] Slotting cutters in accordance with the present invention
are structurally divided into two portions, a central adapter
portion and a cutter portion. The central adapter portion comprises
a disk with an F-type or S-type adapter. The cutter portion is an
annular ring provided with cutting insert receiving pockets, or
cartridge receiving pockets.
[0006] Thus in accordance with the present invention there is
provided a slotting cutter comprising a cutter portion affixed to a
body portion;
[0007] the body portion comprising a disk having an outer
peripheral surface with a first diameter and a central portion
provided with an adapter;
[0008] the cutter portion comprising an annular ring having an
inner surface with a second diameter and an outer portion provided
with recesses;
[0009] the cutter portion being formed of a material having thermal
characteristics such that the application of heat thereto causes
thermal expansion thereof, thus allowing the support member of the
body portion to be positioned inside the cutter portion, and
cooling thereof causes thermal contraction thereof, whereby the
cutter portion is rigidly affixed to the body portion.
[0010] Further in accordance with the present invention there is
provided method for constructing a slotting cutter comprising the
steps of:
[0011] providing a body portion comprising a disk having an outer
peripheral surface with a first diameter and a central portion
provided with an adapter;
[0012] providing a cutter portion comprising an annular ring having
an inner surface with a second diameter and an outer portion
provided with recesses, the cutter portion being formed of a
material having thermal characteristics such that the application
of heat thereto causes thermal expansion thereof; and
[0013] affixing the cutter portion to the central body portion
by:
[0014] applying heat to the to the cutter portion;
[0015] positioning the body portion inside the heated cutter
portion; and
[0016] allowing the cutter portion to cool, thereby causing thermal
contraction thereof, whereby the cutter portion becomes rigidly
affixed to the body portion.
[0017] Typically, the first diameter is larger than the second
diameter.
[0018] Preferably, the slotting cutter is provided with an axial
securing arrangement for ensuring that the cutter portion is
secured against axial movement relative to the body portion.
[0019] In accordance with a preferred embodiment of the present
invention, the axial securing arrangement comprises at least two
countersunk through bores extending from the front face of the
support member to the outer peripheral surface thereof that mate,
when the body portion is positioned inside the heated cutter
portion, with at least two depressions provided on the inner
surface of the cutter portion and countersunk head screws screwed
into the at least two countersunk through bores and engaging a rear
section of the at least two depressions
[0020] Typically, each countersunk through bore has a longitudinal
axis that makes an acute angle .alpha. with a normal to the front
face of the support member.
[0021] Preferably, the slotting cutter is provided with a
rotational securing arrangement for ensuring that the cutter
portion is secured against rotational movement relative to the body
portion.
[0022] In accordance with a preferred embodiment of the present
invention, the rotational securing arrangement comprises a
protrusion protruding from the outer peripheral surface of the
support member, which protrusion engaging an indent on the inner
surface of the cutter portion.
[0023] If desired, the recesses are insert receiving pockets.
[0024] In accordance with a preferred embodiment of the present
invention, the recesses are cartridge receiving pockets for
receiving cutting insert receiving cartridges.
[0025] If desired, the slotting cutter is provided with right-hand
cutting insert receiving cartridges.
[0026] Further if desired, the slotting cutter is provided with
left-hand cutting insert receiving cartridges.
[0027] Yet further if desired, the slotting cutter is provided with
both left-handed and right-hand cutting insert receiving
cartridges.
[0028] In accordance with one embodiment, the adapter of the
slotting cutter is an S-Type adapter.
[0029] In accordance with another embodiment, the adapter of the
slotting cutter is an F-Type adapter.
BRIEF DESCRIPTION OF THE DRAWINGS
[0030] For a better understanding the invention will now be
described, by way of example only, with reference to the
accompanying drawings in which:
[0031] FIG. 1 is a perspective view of a slotting cutter with an
F-type adapter;
[0032] FIG. 2 is a perspective view of a slotting cutter with an
S-type adapter;
[0033] FIG. 3 is a perspective exploded view of a slotting cutter
with an F-type adapter;
[0034] FIG. 4 is a perspective exploded view of a slotting cutter
with an S-type adapter;
[0035] FIG. 5 is a side exploded view of a slotting cutter with an
S-type adapter;
[0036] FIG. 6 is a sectional view indicated by the line VI-VI of
FIG. 5;
[0037] FIG. 7 is a sectional view indicated by the line VII-VII of
FIG. 5; and
[0038] FIG. 8 is an enlarged detail of a portion of FIG. 7.
DETAILED DESCRIPTION OF THE INVENTION
[0039] Attention is drawn to the drawings, showing two basic types
of slotting cutters, 10 and 12, that are differentiated by their
adapters. In the following description the same reference numeral
will be used to indicate identical features or elements of the two
slotting cutters. Features or elements that are not identical but
perform a similar function in each of the slotting cutters, will be
referred to by the same name and will be designated by the
reference numeral n with respect to the first type of slotting
cutter and designated by the reference numeral n+100 with respect
to the second type of slotting cutter.
[0040] The first type of slotting cutter 10 has an F-type adapter
12 and will therefore also be referred to as an F-type slotting
cutter. The second type of slotting cutter 110 has an S-type
adapter 112 and will therefore also be referred to as an S-type
slotting cutter. Each type of slotting cutter comprises a cutter
portion 14 and a body portion 16 (116) which are manufactured
separately and combined to form the slotting cutter by a heat
shrinkage method, as will be described in greater detail below. The
body portion 16 (116) comprises a disk-like support member 18
having front and rear faces 20 and 22, respectively, an outer
peripheral surface 24 of diameter D1 and a central portion 26
provided with an adapter. The adapter 12 of the F-type slotting
cutter 10 extends rearwardly from the rear of the support member
18, whereas the adapter 112 of the S-type of slotting cutter 110 is
substantially of the same thickness as the support member 18,
slightly protruding from the front and rear faces 20 and 22,
respectively (see FIG. 6).
[0041] A thin lip 27, having a forwardly facing location surface
28, extends radially from the rear face 22 of the support member.
Four countersunk through bores 30 extend from the front face 20 to
the outer peripheral surface 24. In the drawings the countersunk
through bores 30 are shown to continue on from the outer peripheral
surface 24 to the lip 27. It should be noted that this if for
convenience of production only. In principle, it is sufficient that
the countersunk through bore 30 extend from the front face 20 to
the outer peripheral surface 24. Each countersunk through bore has
a longitudinal axis A that makes an acute angle .alpha. with a
normal N to the front face 20. Each countersunk through bore 30 has
a forward countersunk portion 32 and a rear screw threaded portion
34. The support member 18 has a protrusion 36 protruding from the
outer peripheral surface 24. The function of the countersunk
through bores 30 and of the protrusion 36 will be described below
with reference to an assembled slotting cutter. For convenience of
production, the protrusion is manufactured by first forming a bore
at the periphery of the support member and then forcibly urging a
pin into the bore so that part of the pin protrudes beyond the
outer peripheral surface 24.
[0042] The cutter portion 14 has the form of an annular ring having
an inner surface 38 with a diameter D2 and an outer portion
provided with recesses 40. The diameter D2 of the inner surface 38
of the cutter portion 14 is smaller than the diameter D1 of the
outer peripheral surface 24 of the support member 18. Preferably,
the recesses are cartridge receiving pockets for receiving cutting
insert receiving cartridges. Either right-hand 42, left-hand 44, or
both right-hand and left-hand insert receiving cartridges can be
mounted in the recesses 40. However, the recesses 40 can also be
designed as insert receiving pockets for directly mounting cutting
inserts therein. The cutting inserts 45 can be of any desired
design, with the cutting insert receiving cartridges accordingly
designed.
[0043] The cutter portion 14 is provided with four depressions 46
on its inner surface 38, that are designed to mate with the four
countersunk through bores 30 when assembling the slotting cutter.
An indent 48 on the inner surface 38 of the cutter portion 14 is
designed to mate with the protrusion 36 protruding from the outer
peripheral surface 24 of the support member 18 of the body portion.
The mating indent-protrusion combination provides a rotational
securing arrangement that ensures that in the assembled slotting
cutter the cutter portion 14 will not rotate relative to the body
portion 16.
[0044] In accordance with the present invention, body portions 16
(116) and cutter portions 14 are manufactured separately and
slotting cutters 10 (110) are constructed by affixing the cutter
portions to the body portions using a heat shrinkage process. Heat
is applied to a cutter portion 14 until its diameter D2 is greater
than the diameter D1 of the support member. The support member 18
of the body portion 16 is then positioned inside the cutter portion
14, with the protrusion 36 engaging the indent 48, and urged toward
the lip 27 until the cutter portion abuts the location surface 28.
Clearly, the radial extension of the lip 27 has to be sufficient to
ensure such abutment. The lip 27 has to be sufficiently thick so as
to enable it to withstand any axial force applied to it by the
cutter portion 14. As the cutter portion cools it contracts and
becomes rigidly affixed to the body portion.
[0045] After assembling the slotting cutter as described above, a
countersunk head screw 49 is placed in each countersunk through
bore 30 and is screwingly engaged by the rear screw threaded
portion 34. The countersunk head screw 49 is tightened until it
engages the depression 46, on the inner surface 38 of the cutter
portion 14, and abuts a rear section 47 of the depression. As the
countersunk head screw is tightened it applies a force to the
cutter portion 14, the axial component of which ensures that the
cutter portion 14 is secured against axial movement relative to the
body portion 16 in a direction away from the location surface 28.
The angle (x is preferably chosen to give rise to a maximal axial
component of the force applied by the countersunk head screw.
[0046] Finally, right-hand 42 and/or left-hand 44 insert receiving
cartridges are affixed, by means of screws 50, to the recesses 40
to complete the construction of the slotting cutter 10 (110).
[0047] Although the present invention has been described to a
certain degree of particularity, it should be understood that
various alterations and modifications can be made without departing
from the spirit or scope of the invention as hereinafter
claimed.
* * * * *