US3834829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool holder for indexable cutting inserts
Assignee: GORHAM TOOL CO
•
Filing: 1973-08-20
•
Granted: 1974-09-10
•
Expires: 1993-08-20
Abstract
Abstract A tool holder having two diametrically opposed indexable cutting inserts mounted thereon. Each insert is retained on the holder in a pocket, the radially inner end wall of which is formed as a radially flexible blade. Two screws are associated with each insert, one for displacing the insert and flexing the blade radially inwardly and the other for flexing the blade and displacing the insert radially outwardly.
Inventors
- 👤 G Munro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:59
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/22; B23C5/24; B23C5/2472; B23B; B23B27/00; B23B27/14; B23B27/16; B23B27/1681; B23C5/2493; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858; Y10T408/8593; Y10T408/94; Y10T408/95
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
367 words
A tool holder for indexable cutting inserts comprising, a body having a shank at one end and a head at its opposite end, said body being split lengthwise into two half sections, means for retaining the half sections in an assembled face-to-face relation, said head in the assembled condition of said half sections being adapted to retain a cutting insert of the type having two opposed generally parallel flat faces connected around the periphery thereof by a plurality of anvil edge faces, each provided with a cutting edge, said inserts being symmetrical about a central axis perpendicular to said flat faces and having an opening therethrough concentric with said axis, at least one of said half sections having a recess in the parting face thereof cooperating with the parting face of the other half section to define a pocket for the reception of said insert, said insert being clamped in said pocket by said two half sections when the latter are assembled in face-to-face relation, said pocket having an axially extending radially inner wall which is inclined to correspond generally with the inclination of said anvil faces relative to the flat side faces of the insert, said radially inner wall of said pocket extending axially substantially the full length of the pocket and being radially flexible, said pocket being open at one side of said head to enable one anvil edge face of the insert to project radially outwardly of the head when an opposed anvil edge face of the insert is disposed in abutting relation with said flexible inner wall, a first insert adjusting means on one half section aligned radially with said flexible wall and disposed on the side thereof radially opposite the pocket defined by said end wall, said adjusting means being adapted to flex said wall radially outwardly of the pocket in response to radial inward movement of said adjusting means to thereby displace the insert in the pocket in a radially outward direction, and second insert adjusting means on one of said half sections engageable with the opening in the insert to displace the insert radially inwardly and thereby flex said wall into firm abutting engagement with the first insert adjusting means.
Claim 2
Dependent Claim
367 words
A tool holder for indexable cutting inserts comprising, a body having a shank at one end and a head at its opposite end, said body being split lengthwise into two half sections, means for retaining the half sections in an assembled face-to-face relation, said head in the assembled condition of said half sections being adapted to retain a cutting insert of the type having two opposed generally parallel flat faces connected around the periphery thereof by a plurality of anvil edge faces, each provided with a cutting edge, said inserts being symmetrical about a central axis perpendicular to said flat faces and having an opening therethrough concentric with said axis, at least one of said half sections having a recess in the parting face thereof cooperating with the parting face of the other half section to define a pocket for the reception of said insert, said insert being clamped in said pocket by said two half sections when the latter are assembled in face-to-face relation, said pocket having an axially extending radially inner wall which is inclined to correspond generally with the inclination of said anvil faces relative to the flat side faces of the insert, said radially inner wall of said pocket extending axially substantially the full length of the pocket and being radially flexible, said pocket being open at one side of said head to enable one anvil edge face of the insert to project radially outwardly of the head when an opposed anvil edge face of the insert is disposed in abutting relation with said flexible inner wall, a first insert adjusting means on one half section aligned radially with said flexible wall and disposed on the side thereof radially opposite the pocket defined by said end wall, said adjusting means being adapted to flex said wall radially outwardly of the pocket in response to radial inward movement of said adjusting means to thereby displace the insert in the pocket in a radially outward direction, and second insert adjusting means on one of said half sections engageable with the opening in the insert to displace the insert radially inwardly and thereby flex said wall into firm abutting engagement with the first insert adjusting means.
Claim 3
Dependent Claim
41 words
A tool holder as called for in claim 1 wherein said flexible wall comprises a blade integrally connected with its respective half section substantially throughout the axial extent of said pocket, said connection providing an axis about which the blade flexes.
Claim 4
Dependent Claim
62 words
A tool holder as called for in claim 1 wherein one of said half sections has an axially extending slot therein spaced radially from the radially inner end of said pocket, said slot having a depth at least slightly greater than the depth of said pocket, the portion of said half section between the pocket and the slot defining said flexible wall.
Claim 5
Dependent Claim
66 words
A tool holder as called for in claim 1 wherein said flexible wall comprises an axially extending blade at the radially inner end of said pocket integrally connected to its respective half section in a direction lengthwise along one edge of the blade, said connected edge forming an axis generally parallel to the axis of the shank and about which the blade is adapted to flex.
Claim 6
Dependent Claim
42 words
A tool holder as called for in claim 4 wherein said first insert adjusting means comprises a screw threaded into the half section to which the blade is connected and adapted to bear against the face of the blade opposite said pocket.
Claim 7
Dependent Claim
65 words
A tool holder as called for in claim 5 wherein the second insert adjusting means comprises a screw threaded into one of said half sections along an axis offset slightly in a radially inward direction from the through hole in the insert and adapted to cam the insert radially inwardly when the last-mentioned screw is advanced by interengagement with the edge of said through opening.
Claim 8
Dependent Claim
59 words
A tool holder as called for in claim 1 wherein said two half sections are of substantially identical shape, each including a similar recess and a flexible radially inner wall of the type described whereby to provide two such pockets in the holder, said pockets extending radially outwardly on opposite sides of a diameter extending through said parting surface.
Claim 9
Dependent Claim
70 words
A tool holder as called for in claim 7 wherein the parting surface of each half section comprises two generally flat, axially extending, parallel faces which are radially offset from one another and interconnected by an axially extending shoulder which is inclined to the planes of said flat faces to correspond generally with the inclination of the anvil end faces of said inserts relative to the flat side faces thereof.
Claim 10
Dependent Claim
39 words
A tool holder as called for in claim 8 wherein each of said recesses is formed on a corresponding face of each half section and extends inwardly on said face to a diametrical plane parallel to said flat face.
Claim 11
Dependent Claim
33 words
A tool holder as called for in claim 9 wherein the radially inner end wall for each pocket is formed integrally with the half section opposite that in which the recess is formed.
Claim 12
Dependent Claim
30 words
A tool holder as called for in claim 10 wherein the flexible wall on each half section is defined by an axially extending slot generally parallel to said inclined shoulder.
Claim 13
Dependent Claim
74 words
A tool holder as called for in claim 11 wherein said first and second insert adjusting means comprise two screws on each half section, one of said two screws being engageable with the through opening in the insert to displace the blade and flex said end wall radiallY inwardly and the other screw being positioned to extend transversely through said slot and flex the wall and displace the insert in a radially outward direction.
References Cited (Backward Citations)
US1273752A
Cited
US3343431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |