Patent US3757397A successfully refreshed from Google Patents.
US3757397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting tools
Assignee: Individual
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Filing: 1971-11-05
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Granted: 1973-09-11
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Expires: 1991-11-05
Abstract
Abstract A cutting tool for use with replaceable carbide cutting inserts includes a head in which a recess is formed with a generally longitudinally extending portion disposed inwardly from the workfacing surface of the tool and a generally transversely extending portion disposed perpendicularly to the first named portion. A nest is removably disposed within the recess and includes a seat formed in one of its longitudinally extending surfaces. The nest further comprises a keying lug extending generally transversely from either one edge of or the central portion of the other of its longitudinally extending surfaces, which lug is received in the generally transversely extending portion of the recess. A replaceable carbide cutting insert is disposed within the seat such that at least one cutting edge extends outwardly of the cutter body. The seat serves accurately to locate the insert with respect to the nest and to hold the same therein. The lug serves accurately to locate the nest within the recess and to lock the nest to the cutter body.
Inventors
- 👤 H Lindsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:35
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/22; B23C5/2265; B23C5/2278; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/192; Y10T407/1922; Y10T407/1932; Y10T407/1934; Y10T407/1938; Y10T407/22; Y10T407/2222; Y10T407/2252; Y10T407/2256; Y10T407/2258
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
383 words
A cutting tool comprising a rotatable cutter body having opposed parallel end faces disposed perpendicularly to the axis of rotation thereof; at least one pair of symmetrically disposed recesses formed in said body, one each of said recesses of said pair extending inwardly of each of said end faces of said body, each said recess of said pair having a first generally axially extending portion extending inwardly from its respective end face and a keyway disposed generally perpendicularly to said first portion, each said keyway being positioned interiorly of said cutter body; a unitary symmetrical nest removably disposed within each said recess, said nest comprising a first portion received in said first portion of said recess, a symmetrically disposed, V-shaped seat formed in one surface of said first portion of said nest, said seat having a bottom and two insert retaining surfaces angularly disposed with respect to each other, said insert retaining surfaces converging to a relief, said bottom and said insert retaining surfaces combining to form a symmetrically disposed support for independently positioning a replaceable cutting insert in said nest and accurately locating said insert with respect thereto, each of said insert retaining surfaces being disposed generally perpendicularly to said bottom of said seat, said bottom being disposed parallel to said one surface of said nest, and a symmetrically disposed keying lug extending perpendicularly to the other surface of said first portion of said nest, said lug being centrally positioned behind said seat, said lug being received in said keyway, said nests thereby being interchangeable as between each of said recesses of said pair, said lug and said keyway accurately locating each said nest within its recess and locking the same therein; a replaceable cutting insert disposed within and independently positioned in each said seat and having at least one cutting edge extending outwardly of its respective cutter end face, said insert being positioned within said seat against said bottom and said angularly disposed insert retaining surfaces, said insert being positioned radially with respect to said cutter body by the position of said insert retaining surfaces of said seat, said insert being positioned circumferentially of said cutter body by the position of said seat bottom; and means to exert pressure against said inserts transversly thereof to retain the same in said seats.
Claim 2
Dependent Claim
383 words
A cutting tool comprising a rotatable cutter body having opposed parallel end faces disposed perpendicularly to the axis of rotation thereof; at least one pair of symmetrically disposed recesses formed in said body, one each of said recesses of said pair extending inwardly of each of said end faces of said body, each said recess of said pair having a first generally axially extending portion extending inwardly from its respective end face and a keyway disposed generally perpendicularly to said first portion, each said keyway being positioned interiorly of said cutter body; a unitary symmetrical nest removably disposed within each said recess, said nest comprising a first portion received in said first portion of said recess, a symmetrically disposed, V-shaped seat formed in one surface of said first portion of said nest, said seat having a bottom and two insert retaining surfaces angularly disposed with respect to each other, said insert retaining surfaces converging to a relief, said bottom and said insert retaining surfaces combining to form a symmetrically disposed support for independently positioning a replaceable cutting insert in said nest and accurately locating said insert with respect thereto, each of said insert retaining surfaces being disposed generally perpendicularly to said bottom of said seat, said bottom being disposed parallel to said one surface of said nest, and a symmetrically disposed keying lug extending perpendicularly to the other surface of said first portion of said nest, said lug being centrally positioned behind said seat, said lug being received in said keyway, said nests thereby being interchangeable as between each of said recesses of said pair, said lug and said keyway accurately locating each said nest within its recess and locking the same therein; a replaceable cutting insert disposed within and independently positioned in each said seat and having at least one cutting edge extending outwardly of its respective cutter end face, said insert being positioned within said seat against said bottom and said angularly disposed insert retaining surfaces, said insert being positioned radially with respect to said cutter body by the position of said insert retaining surfaces of said seat, said insert being positioned circumferentially of said cutter body by the position of said seat bottom; and means to exert pressure against said inserts transversly thereof to retain the same in said seats.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |