EP0356097A2
Expired / Lapsed
EP
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Tool insert
Assignee: De Beers Industrial Diamond Division Pty Ltd
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Filing: 1989-08-14
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Granted: —
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Expires: 2009-08-14
Abstract
Abstract A tool insert comprises: (a) a cemented carbide substrate (10) having two ends (12) (14) joined by a side (16); (b) a recess formed in one end (12) of the substrate and having a side (18) and a base (20), the side (18) sloping inwards towards a centre point of the base (20); (c) an abrasive compact (24) located in the recess and bonded to the substrate (10), the abrasive compact (24) having a top surface (26) which provides a cutting surface or edge (26) for the tool insert, a bottom surface complementary to the base (20) of the recess, and a side surface located in the recess, the side surface being complementary to the side (18) of the recess.
Inventors
- 👤 Klaus Tank
- 👤 Peter Noel Tomlinson
- 👤 Richard Patrick Burnand
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 00:22
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/56; E21B10/567; E21B10/5676; B; B23; B23B; B23B27/00; B23B27/14; B23B27/141; B28; B28D; B28D1/00; B28D1/18; B28D1/186; B28D1/188; E21B10/573; E21B10/5735; B23B2222/00; B23B2222/28; B23B2226/00; B23B2226/31; Y; Y10; Y10T; Y10T407/00; Y10T407/26; Y10T407/27
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
130 words
A tool insert comprises: (a) a cemented carbide substrate (10) having two ends (12) (14) joined by a side (16); (b) a recess formed in one end (12) of the substrate (10) and having a side (18) and a base (20), the side (18) sloping inwards towards a centre point of the base (20); (c) an abrasive compact (24) located in the recess and bonded to the substrate (10), the abrasive compact (24) having a top surface (26) which provides a cutting surface or edge for the tool insert, a bottom surface complementary to the base (20) of the recess, and a side surface at least partially located in the recess, the portion of the side surface located in the recess being complementary to the side (18) of the recess.
Claim 2
Dependent Claim
130 words
A tool insert comprises: (a) a cemented carbide substrate (10) having two ends (12) (14) joined by a side (16); (b) a recess formed in one end (12) of the substrate (10) and having a side (18) and a base (20), the side (18) sloping inwards towards a centre point of the base (20); (c) an abrasive compact (24) located in the recess and bonded to the substrate (10), the abrasive compact (24) having a top surface (26) which provides a cutting surface or edge for the tool insert, a bottom surface complementary to the base (20) of the recess, and a side surface at least partially located in the recess, the portion of the side surface located in the recess being complementary to the side (18) of the recess.
Claim 3
Dependent Claim
16 words
A tool insert according to claim 1 wherein the base (20) of the recess is planar.
Claim 4
Dependent Claim
19 words
A tool insert according to claim 1 or claim 2 wherein the side (18) of the recess is planar.
Claim 5
Dependent Claim
20 words
A tool insert according to either claim 1 or claim 2 wherein the side (138) of the recess is curved.
Claim 6
Dependent Claim
35 words
A tool insert according to any one of the preceding claims wherein the top surface (64) of the compact is planar and an edge (68) of this surface provides a cutting edge for the insert.
Claim 7
Dependent Claim
33 words
A tool insert according to any one of claims 1 to 4 wherein the top surface (26) of the compact is curved and this curved surface provides a cutting surface for the insert.
Claim 8
Dependent Claim
39 words
A tool insert according to claim 6 wherein the end of the substrate in which the recess is formed has a portion (34) surrounding the recess, this portion (34) sloping away from the curved top surface of the compact.
Claim 9
Dependent Claim
32 words
A tool insert according to any one of claims 1 to 6 wherein the end of the substrate in which the recess is formed has a planar portion (52) surrounding the recess.
Claim 10
Dependent Claim
31 words
A tool insert according to claim 8 wherein the cutting surface (64) or edge (68) of the compact is in the same plane as that of the substrate planar portion (52).
Claim 11
Dependent Claim
18 words
A tool insert according to any one of the preceding claims wherein the recess is an annular recess.
References Cited (Backward Citations)
No citation records indexed.
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