U.S. patent application number 10/432348 was filed with the patent office on 2004-11-11 for tool inserts.
Invention is credited to Cullen, Barry James, Glynn, John David, O'Malley, Dermot Francis, White, Peter John.
Application Number | 20040222113 10/432348 |
Document ID | / |
Family ID | 25588995 |
Filed Date | 2004-11-11 |
United States Patent
Application |
20040222113 |
Kind Code |
A1 |
Cullen, Barry James ; et
al. |
November 11, 2004 |
Tool inserts
Abstract
A unit including a plurality of tool inserts, such as used in
saw blades for use in woodworking. Each insert defines a working
region and is adapted to be secured to a tool to present that
region with a predetermined orientation. A body defines a plurality
of discrete zones, each zone having an insert located therein such
that the orientation of the working portion at each insert in the
zone is the same.
Inventors: |
Cullen, Barry James;
(Castleconnell, IE) ; Glynn, John David; (Ennis,
IE) ; O'Malley, Dermot Francis; (Kilmaley, IE)
; White, Peter John; (Ennis, IE) |
Correspondence
Address: |
OBLON, SPIVAK, MCCLELLAND, MAIER & NEUSTADT, P.C.
1940 DUKE STREET
ALEXANDRIA
VA
22314
US
|
Family ID: |
25588995 |
Appl. No.: |
10/432348 |
Filed: |
November 10, 2003 |
PCT Filed: |
November 29, 2001 |
PCT NO: |
PCT/IB01/02255 |
Current U.S.
Class: |
206/349 |
Current CPC
Class: |
B65D 75/327 20130101;
B23D 65/00 20130101; B23D 61/04 20130101 |
Class at
Publication: |
206/349 |
International
Class: |
A45C 011/26 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 29, 2000 |
ZA |
2000/7020 |
Claims
1. A unit comprises: a plurality of tool inserts, each insert
defining a working region and being adapted to be secured to a tool
to present that region with a predetermined orientation; and a body
defining a plurality of discrete zones, each zone having an insert
located therein such that the orientation of the working portion of
each insert in the zones is the same.
2. A unit according to claim 1 wherein the body is elongate in form
and the zones are defined along the length of the body.
3. A unit according claim 1 wherein the body takes the form of a
tape.
4. A unit according to claim 1 wherein the zones are pockets or
recesses in the body into which the inserts are placed.
5. A unit according to claim 1 wherein the tool inserts are for use
with saw blades, each insert comprising a PCD layer bonded to a
carbide backing, with the PCD layer defining the working
region.
6. A unit according claim 2 wherein the body takes the form of a
tape.
7. A unit according to claim 2 wherein the zones are pockets or
recesses in the body into which the inserts are placed.
8. A unit according to claim 3 wherein the zones are pockets or
recesses in the body into which the inserts are placed.
9. A unit according to claim 6 wherein the zones are pockets or
recesses in the body into which the inserts are placed.
10. A unit according to claim 2 wherein the tool inserts are for
use with saw blades, each insert comprising a PCD layer bonded to a
carbide backing, with the PCD layer defining the working
region.
11. A unit according to claim 3 wherein the tool inserts are for
use with saw blades, each insert comprising a PCD layer bonded to a
carbide backing, with the PCD layer defining the working
region.
12. A unit according to claim 4 wherein the tool inserts are for
use with saw blades, each insert comprising a PCD layer bonded to a
carbide backing, with the PCD layer defining the working
region.
13. A unit according to claim 6 wherein the tool inserts are for
use with saw blades, each insert comprising a PCD layer bonded to a
carbide backing, with the PCD layer defining the working
region.
14. A unit according to claim 7 wherein the tool inserts are for
use with saw blades, each insert comprising a PCD layer bonded to a
carbide backing, with the PCD layer defining the working
region.
15. A unit according to claim 8 wherein the tool inserts are for
use with saw blades, each insert comprising a PCD layer bonded to a
carbide backing, with the PCD layer defining the working
region.
16. A unit according to claim 9 wherein the tool inserts are for
use with saw blades, each insert comprising a PCD layer bonded to a
carbide backing, with the PCD layer defining the working region.
Description
BACKGROUND OF THE INVENTION
[0001] This invention relates to tool inserts.
[0002] Tool inserts in the form of PCD (polycrystalline diamond)
tips with a carbide backing are sold to saw blade manufacturers for
use in the woodworking industry. Such manufacturers have automatic
brazing machines for brazing the tips into pockets on a saw blade.
The tips or saw teeth need to be oriented correctly--usually with
the PCD facing down and a chamfered end of the carbide going
forward for this brazing operation. Feeding of PCD saw teeth
correctly oriented in a reliable manner to the brazing machine is a
major headache for saw blade manufacturers.
SUMMARY OF THE INVENTION
[0003] According to the present invention, a unit comprises:
[0004] a plurality of tool inserts, each insert defining a working
region and being adapted to be secured to a tool to present that
region with a predetermined orientation; and
[0005] a body defining a plurality of discrete zones, each zone
having an insert located therein such that the orientation of the
working portion of each insert in the zones is the same.
[0006] In one preferred form of the invention, the body is elongate
in form and the zones are defined along the length of the body. The
body will typically take the form of a tape.
[0007] The zones may be pockets or recesses in the body into which
the inserts are placed.
[0008] The invention has particular application to tool inserts for
saw blades which comprise a PCD layer bonded to a carbide backing,
the PCD layer providing the working region.
[0009] According to another aspect of the invention, there is
provided a collection of tool inserts as described above in
combination with apparatus such as brazing apparatus for securing
the inserts to a tool.
DESCRIPTION OF THE DRAWING
[0010] The drawing illustrates a perspective view of an embodiment
of the invention.
DESCRIPTION OF AN EMBODIMENT
[0011] An embodiment of the invention will now be described with
reference to the accompanying drawing. Referring to this drawing, a
length of tape 10 has a plurality of pockets 12 formed along its
length. The tape is coiled on to spindle 14. Located in each pocket
12 is a saw blade tip 18. Each saw blade tip 18 has a carbide
backing 20 to which is bonded a PCD layer 22. The PCD layer is
formed with a leading cutting edge 24. The carbide backing 20 has a
chamfered edge 26.
[0012] A saw blade tip 18 is located in each pocket 12 such that
the cutting edge 24 of each tip 18 is located at the forward end 28
of the pocket and facing down and into the pocket as
illustrated.
[0013] In use, the spindle 14 (which will generally form part of a
reel) will be suitably mounted to a saw blade manufacturer's
brazing machine. When it is necessary to braze tips to a saw blade,
the tape will be moved forward one pocket. As the tape moves
forward one pocket, a cover tape 30 is simultaneously peeled back
from the pocket, exposing one correctly oriented saw blade tip.
This is then picked up by a brazing machine attachment and placed
into the feeding track of the brazing machine ready for brazing.
When the tip 18 has been brazed into position, another pocket is
moved forward and the process repeated.
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