Patent US4818153A successfully refreshed from Google Patents.
US4818153A
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Cutting insert having means for detecting wear
Assignee: Santrade Ltd
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Filing: 1986-11-06
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Granted: 1989-04-04
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Expires: 2006-11-06
Abstract
Abstract Cutting insert for chip-removing machining comprising an upper face (11), a lower face (12) and, connecting those, edge surfaces (13). Lines of intersection between the edge surfaces and the upper face form cutting edges. The insert (10) has a substrate (14) comprising a metal and a photon-emitting material. The substrate (14) is covered by a photon-tight layer (15). During wear of the layer (15) the substrate (14) is exposed, and therefore the intensity and direction fo the photons can be detected for determination of the size and type of the wear damage.
Inventors
- 👤 Ingemar H. Strandell
- 👤 Ingemar S. L. Svensson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:02
CPC Classifications
B; B23; B23B; B23B27/00; B23Q; B23Q17/00; B23Q17/09; B23Q17/0952; B23Q17/0957; Y; Y10; Y10T; Y10T407/00; Y10T407/23; Y10T407/26; Y10T407/27; Y10T408/00; Y10T408/78
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
52 words
A cutting insert with at least one cutting edge for chip-removing machining comprising a substrate (14;14') and at least one first layer (15;15') at least partly covering the substrate, characterized in that said cutting insert includes a fluorescent material which is provided to be exposed during wear of the first layer (15;15').
Claim 2
Dependent Claim
52 words
A cutting insert with at least one cutting edge for chip-removing machining comprising a substrate (14;14') and at least one first layer (15;15') at least partly covering the substrate, characterized in that said cutting insert includes a fluorescent material which is provided to be exposed during wear of the first layer (15;15').
Claim 3
Dependent Claim
17 words
Cutting insert according to claim 1, characterized in that the material is mixed with the substrate (14).
Claim 4
Dependent Claim
18 words
Cutting insert according to claim 2, characterized in that the material is homogeneously mixed with the substrate (14).
Claim 5
Dependent Claim
19 words
Cutting insert according to claim 2, characterized in that the substrate mainly consists of sintered hard metal or ceramics.
Claim 6
Dependent Claim
26 words
Cutting insert according to claim 2, characterized in that the substrate mainly consists of a metal alloy, such as tool steel, carbon steel or speed steel.
Claim 7
Dependent Claim
27 words
Cutting insert according to claim 1, characterized in that the material is arranged as a second layer (14") between the substrate (14') and the first layer (15').
Claim 8
Dependent Claim
20 words
Cutting insert according to claim 1, characterized in that the substrate (14;14') mainly consists of sintered hard metal or ceramics.
Claim 9
Dependent Claim
27 words
Cutting insert according to claim 1, characterized in that the substrate (14;14') mainly consists of a metal alloy, such as tool steel, carbon steel or speed steel.
Claim 10
Dependent Claim
23 words
Cutting insert according to claim 1, characterized in that the first layer (15;15') mainly consists of metal oxide, metal nitride, ceramics or diamond.
Claim 11
Dependent Claim
20 words
Cutting insert according to claim 9, characterized in that the substrate (14) consists of ceramics doped with the fluorescent material.
Claim 12
Dependent Claim
47 words
Cutting insert according to claim 1, characterized in that it has a polygonal basic shape comprising an upper face (11;11') and a lower face (12;12') which are connected by edge surfaces (13;13'), lines of intersection between said edge surfaces and at least one face forming cutting edges.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-03 | 1992-10-03 | 1993-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-03 | 1996-10-03 | 1997-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-03 | 2000-10-03 | 2001-04-04 | $7700.00 | Window Closed / Lapsed |