US4215957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting insert for chipforming machine
Assignee: Santrade Ltd
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Filing: 1978-09-19
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Granted: 1980-08-05
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Expires: 1998-09-19
Abstract
Abstract A cutting insert for chipforming machining of workpieces is of the type comprising a rake face and a clearance face. At least one cutting edge is formed by the transition between the rake and clearance faces. The cutting edge is intersected by depressions extending along the rake face. The greatest dimension of each depression in a direction parallel to its associated cutting edge is greater than the distance between adjacent depressions.
Inventors
- 👤 Johan E. Holma
- 👤 Ake A. Andersson
- 👤 Nils L. Gavlefors
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:18
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/16; B23B27/1614; B23B27/1618; B23B51/00; B23B2200/00; B23B2200/04; B23B2200/0404; B23B2200/0419; B23B2200/20; B23B2200/204; B23B2200/32; B23B2200/323; Y; Y10; Y10T; Y10T407/00; Y10T407/23; Y10T407/235
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
70 words
A cutting insert for use in the chipforming machining of workpieces, said insert comprising a rake face and a clearance face, at least one cutting edge formed by the intersection of the rake and clearance faces, said cutting edge being intersected by spaced depressions extending along said rake face, the depth of each depression initially increasing in a direction away from said cutting edge and thereafter decreasing in said direction.
Claim 2
Dependent Claim
70 words
A cutting insert for use in the chipforming machining of workpieces, said insert comprising a rake face and a clearance face, at least one cutting edge formed by the intersection of the rake and clearance faces, said cutting edge being intersected by spaced depressions extending along said rake face, the depth of each depression initially increasing in a direction away from said cutting edge and thereafter decreasing in said direction.
Claim 3
Dependent Claim
13 words
A cutting insert according to claim 1, wherein said cutting edge is nonlinear.
Claim 4
Dependent Claim
39 words
A cutting insert according to claim 1, wherein said cutting edge is formed between two corners of the insert and comprises two outwardly directed cutting edge portions defining an obtuse angle therebetween and form a point intermediate adjacent corners.
Claim 5
Dependent Claim
45 words
A cutting insert according to claim 1, wherein said rake face is provided with a planar land situated along the cutting edge, the width of the planar land decreasing in the direction from a corner of the insert towards the center of the cutting edge.
Claim 6
Dependent Claim
27 words
A cutting insert according to claim 1, wherein said depressions are shaped with an essentially sharp transition edge relative to the cutting edge or rake face, respectively.
Claim 7
Dependent Claim
24 words
A cutting insert according to claim 1, wherein the depressions each include a rear or inner border lying within or upon the rake face.
Claim 8
Dependent Claim
26 words
A cutting insert according to claim 1, wherein the greatest dimension of the depressions perpendicular to the cutting edge is substantially the same as the width.
Claim 9
Dependent Claim
27 words
A cutting insert according to claim 1, including one or more chip breaker grooves formed as a depression in the rake face extending along the cutting edge.
Claim 10
Dependent Claim
111 words
A cutting insert for chipforming machining of workpieces, said insert being of the type comprising a rake face and a clearance face, at least one cutting edge formed by the transition between the rake and clearance faces, said cutting edge being intersected by depressions extending along said rake face, the improvement wherein the greatest dimension of each depression in a direction parallel to its associated cutting edge is greater than the distance between adjacent depressions, said rake face provided with a planar land situated along the cutting edge, the width of the planar land decreasing in the direction from a corner of the insert towards the center of the cutting edge.
Claim 11
Dependent Claim
111 words
A cutting insert for chipforming machining of workpieces, said insert being of the type comprising a rake face and a clearance face, at least one cutting edge formed by the transition between the rake and clearance faces, said cutting edge being intersected by depressions extending along said rake face, the improvement wherein the greatest dimension of each depression in a direction parallel to its associated cutting edge is greater than the distance between adjacent depressions, said rake face provided with a planar land situated along the cutting edge, the width of the planar land decreasing in the direction from a corner of the insert towards the center of the cutting edge.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-05 | 1984-02-04 | 1984-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-05 | 1988-02-04 | 1988-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-05 | 1992-02-04 | 1992-08-05 | $7700.00 | Window Closed / Lapsed |