US3866282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting insert
Assignee: Sandvik AB
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Filing: 1973-04-13
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Granted: 1975-02-18
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Expires: 1993-04-13
Abstract
Abstract An indexible cutting insert is given applicability to perform under varying working conditions by giving the corner part a smaller rake angle gamma than the remaining parts of the cutting edge, the rake angle continuously decreasing in the direction of the corner in a transition zone which may extend up to one-third of the total length of the appertaining edge.
Inventors
- 👤 Evert Gustav Lundgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:05
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/141; B23B27/143; Y; Y10; Y10T; Y10T407/00; Y10T407/23; Y10T407/24; Y10T407/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
Cutting insert for chip-forming machining of metal work pieces, said insert having at least one cutting edge (13) formed of the transition between the major faces (11) and end faces (14) and a chip breaker groove (15) extending along the cutting edge (13) on the major or rake face (11), the mentioned end faces being connected by insert corners (12) provided with nose radius (20), in which cutting insert the cutter side of the chip breaker groove, seen in transverse cross-section, has an essentially straight profile, and in which the corner part (17) of the rake face is formed with a smaller rake angle gamma than the remaining parts of the cutting edge (13), said rake angle gamma decreasing continuously in the direction towards the insert corner (12) within a considerable transition zone which is at the most one-third of the total length of the side or edge of the cutting insert.
Claim 2
Dependent Claim
152 words
Cutting insert for chip-forming machining of metal work pieces, said insert having at least one cutting edge (13) formed of the transition between the major faces (11) and end faces (14) and a chip breaker groove (15) extending along the cutting edge (13) on the major or rake face (11), the mentioned end faces being connected by insert corners (12) provided with nose radius (20), in which cutting insert the cutter side of the chip breaker groove, seen in transverse cross-section, has an essentially straight profile, and in which the corner part (17) of the rake face is formed with a smaller rake angle gamma than the remaining parts of the cutting edge (13), said rake angle gamma decreasing continuously in the direction towards the insert corner (12) within a considerable transition zone which is at the most one-third of the total length of the side or edge of the cutting insert.
References Cited (Backward Citations)
US3395434A
Cited
US3383748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |