US3780408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting tool
Assignee: Kennametal Inc
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Filing: 1972-03-02
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Granted: 1973-12-25
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Expires: 1992-03-02
Abstract
Abstract A cutting tool in which a small rod-like piece of cemented carbide material is mounted at an angle so that one end projects from the holder and on which one end is a cutting edge for being presented to work to be turned. The holder consists of a block adapted for mounting in a holder in a machine tool and on one side of the block is a support plate having an inclined insert supporting surface at one end on which the rod-like cutting insert rests. A clamp plate overlies the support plate and a clamp presses the clamp plate down so that a surface thereon engaging the insert from above will clamp the insert against the support plate. The insert in the lateral direction has a greater dimension than the corresponding dimension of the support and clamp plates and thereby takes a kerf from the work which has clearance on both sides from the support and clamp plates whereby the tool is useful, amongst other things, for cut off operations.
Inventors
- 👤 J Mccreery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:04
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/04; B23B29/043; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2222; Y10T407/2244; Y10T407/227; Y10T407/2272; Y10T407/2282; Y10T407/2292; Y10T407/25
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
307 words
In a cutting tool; a rod-like insert having a wedge shape formed on one end defining a lateral cutting edge, an elongated support member thin relative to the length thereof and having a support surface at one end inclined at an angle on the order of about 30* to 45* to the direction of the length of said support member and adapted to engage said insert from beneath with the longitudinal axis of the insert substantially parallel to said surface, a surface at the inner end of said support surface perpendicular thereto abuttingly engaging the other end of the insert, an elongated clamp member also thin relative to the length thereof substantially coplanar with and parallel to said support member and having a clamping surface at one end generally parallel to said support surface and engaging the insert from above, said clamp member having a first abutment surface at the other end thereof, said support member being formed with a notch to receive said clamp member and having said support surface at one end and a second abutment surface at the other end engaging the said clamp member abutment surface, said notch having an upwardly facing bottom wall, said clamp member and support member having interengaging means adjacent said abutment surfaces which support the adjacent end of said clamp member while the other end of said clamp member engages the insert and the intermediate portion of said clamp member is spaced from said bottom wall of said noTch, said one end of the insert protruding outwardly beyond the said one end of said support member and clamp member, and clamp means engaging said clamp member on the side facing away from the insert and between the ends thereof for urging said clamp member toward said support member to clamp the insert between said clamp and support surfaces.
Claim 2
Dependent Claim
307 words
In a cutting tool; a rod-like insert having a wedge shape formed on one end defining a lateral cutting edge, an elongated support member thin relative to the length thereof and having a support surface at one end inclined at an angle on the order of about 30* to 45* to the direction of the length of said support member and adapted to engage said insert from beneath with the longitudinal axis of the insert substantially parallel to said surface, a surface at the inner end of said support surface perpendicular thereto abuttingly engaging the other end of the insert, an elongated clamp member also thin relative to the length thereof substantially coplanar with and parallel to said support member and having a clamping surface at one end generally parallel to said support surface and engaging the insert from above, said clamp member having a first abutment surface at the other end thereof, said support member being formed with a notch to receive said clamp member and having said support surface at one end and a second abutment surface at the other end engaging the said clamp member abutment surface, said notch having an upwardly facing bottom wall, said clamp member and support member having interengaging means adjacent said abutment surfaces which support the adjacent end of said clamp member while the other end of said clamp member engages the insert and the intermediate portion of said clamp member is spaced from said bottom wall of said noTch, said one end of the insert protruding outwardly beyond the said one end of said support member and clamp member, and clamp means engaging said clamp member on the side facing away from the insert and between the ends thereof for urging said clamp member toward said support member to clamp the insert between said clamp and support surfaces.
Claim 3
Dependent Claim
35 words
A cutting tool according to claim 1 in which at least the said protruding one end of said insert projects laterally beyond the lateral limits of said support member and clamp member at both sides.
Claim 4
Dependent Claim
21 words
A cutting tool according to claim 2 in which said cutting edge extends laterally on said one end of said insert.
Claim 5
Dependent Claim
68 words
A cutting tool according to claim 1 which includes a tool block, means fixedly connecting said support member to one side of said tool block with the said one end of said support member projecting outwardly from one end of said tool block, said clamp means comprising a clamp element adjustably carried by said block and engaging said clamp member on the side thereof opposite said support member.
Claim 6
Dependent Claim
33 words
A cutting toolaccording to claim 4 in which said one side of said block has a ledge formed thereon facing said support member and supportingly engaging the adjacent edge of said support member.
Claim 7
Dependent Claim
53 words
A cutting tool according to claim 1 in which at least one of said support and clamp surfaces is in the form of a portion of a polygon when viewed in cross section and said insert in cross section has on at least one side a contour complementary to the said one surface.
Claim 8
Dependent Claim
38 words
A cutting tool according to claim 1 in which said insert tapers inwardly in a direction away from said one end thereof and said support and clamp surfaces are inclined to conform to the taper of said insert.
Claim 9
Dependent Claim
43 words
A cutting tool according to claim 1 in which said insert has a lateral notch therein near the inner end on the side facing said clamp member and said clamp member has a portion at the end nearest said insert engaging said notch.
Claim 10
Dependent Claim
61 words
A cutting tool according to claim 1 in which said cutting edge is formed at the intersection of two planar surfaces on said one end of said insert with the plane of each surface perpendicular to the plane of said support and clamp members and each making an angle of less than 45 * with the longitudinal axis of said insert.
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |