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US 7,887,266 B2Granted
Cutting tool and cutting insert therefor
AssigneeIscar, Ltd.
InventorGil Hecht
Life of this patent
Estimating the term…
Abstract
A cutting tool has a cutting insert retained in an insert pocket by a retaining screw. The rear surface of the cutting insert has an insert engaging element that comprises first insert rear abutment surfaces that are spaced apart and make an insert engaging angle with each other. The rear surface of the insert pocket has a pocket engaging element that comprises first pocket rear abutment surfaces that make a pocket engaging angle with each other. In a retained position, the first insert rear abutment surfaces abut the first pocket rear abutment surfaces, second insert rear abutment surfaces abut second pocket rear abutment surfaces and insert lower abutment surfaces abut pocket lower abutment surfaces.
Claims35
A cutting insert comprising:
- an insert upper surface and an insert lower surface forming insert end surfaces, and a peripheral surface extending between the insert end surfaces, the peripheral surface comprising:
- opposing insert forward and rear surfaces and opposing insert side surfaces extending between the insert forward and rear surfaces,
- a through bore having a through bore axis (A) and extending between the insert forward and rear surfaces,
- a forward cutting edge formed at an intersection of the insert upper surface and the insert forward surface, and
- an insert engaging element formed on a first portion of the insert rear surface, the first portion being located between the through bore and a first of the insert end surfaces, the insert engaging element extending in a direction between the insert end surfaces and comprising two spaced apart first insert rear abutment surfaces;
- wherein the insert engaging element is spaced apart from the opposing insert side surfaces by insert rear non-abutment surfaces;
- and
- wherein the insert engaging element comprises a protrusion that is located between the insert lower surface and the through bore.
5 more elements
A cutting insert comprising:
- an insert upper surface and an insert lower surface forming insert end surfaces, and a peripheral surface extending between the insert end surfaces, the peripheral surface comprising:
- opposing insert forward and rear surfaces and opposing insert side surfaces extending between the insert forward and rear surfaces,
- a through bore having a through bore axis (A) and extending between the insert forward and rear surfaces,
- a forward cutting edge formed at an intersection of the insert upper surface and the insert forward surface, and
- an insert engaging element formed on a first portion of the insert rear surface, the first portion being located between the through bore and a first of the insert end surfaces, the insert engaging element extending in a direction between the insert end surfaces and comprising two spaced apart first insert rear abutment surfaces,
- wherein the two spaced apart first insert rear abutment surfaces are co-planar.
3 more elements
A cutting insert comprising:
- an insert upper surface and an insert lower surface forming insert end surfaces, and a peripheral surface extending between the insert end surfaces, the peripheral surface comprising:
- opposing insert forward and rear surfaces and opposing insert side surfaces extending between the insert forward and rear surfaces,
- a through bore having a through bore axis (A) and extending between the insert forward and rear surfaces,
- a forward cutting edge formed at an intersection of the insert upper surface and the insert forward surface, and
- an insert engaging element formed on a first portion of the insert rear surface, the first portion being located between the through bore and a first of the insert end surfaces, the insert engaging element extending in a direction between the insert end surfaces and comprising two spaced apart first insert rear abutment surfaces;
- wherein the insert engaging element is spaced apart from the opposing insert side surfaces by insert rear non-abutment surfaces;
- and
- wherein the insert engaging element comprises a protrusion that is located between the insert upper surface and the through bore.
5 more elements
A cutting insert comprising:
- an insert upper surface and an insert lower surface forming insert end surfaces, and a peripheral surface extending between the insert end surfaces, the peripheral surface comprising:
- opposing insert forward and rear surfaces and opposing insert side surfaces extending between the insert forward and rear surfaces,
- a through bore having a through bore axis (A) and extending between the insert forward and rear surfaces,
- a forward cutting edge formed at an intersection of the insert upper surface and the insert forward surface, and
- an insert engaging element formed on a first portion of the insert rear surface, the first portion being located between the through bore and a first of the insert end surfaces, the insert engaging element extending in a direction between the insert end surfaces and comprising two spaced apart first insert rear abutment surfaces;
- wherein the insert engaging element is spaced apart from the opposing insert side surfaces by insert rear non-abutment surfaces;
- and
- wherein the insert engaging element comprises a recess that is located between the insert lower surface and the through bore.
5 more elements
A cutting insert comprising:
- an insert upper surface and an insert lower surface forming insert end surfaces, and a peripheral surface extending between the insert end surfaces, the peripheral surface comprising:
- opposing insert forward and rear surfaces and opposing insert side surfaces extending between the insert forward and rear surfaces,
- a through bore having a through bore axis (A) and extending between the insert forward and rear surfaces,
- a forward cutting edge formed at an intersection of the insert upper surface and the insert forward surface, and
- an insert engaging element formed on a first portion of the insert rear surface, the first portion being located between the through bore and a first of the insert end surfaces, the insert engaging element extending in a direction between the insert end surfaces and comprising two spaced apart first insert rear abutment surfaces;
- wherein the insert engaging element is spaced apart from the opposing insert side surfaces by insert rear non-abutment surfaces;
- and
- wherein the insert engaging element comprises a recess that is located between the insert upper surface and the through bore.
5 more elements
A cutting insert comprising:
- an insert upper surface and an insert lower surface forming insert end surfaces, and a peripheral surface extending between the insert end surfaces, the peripheral surface comprising:
- opposing insert forward and rear surfaces and opposing insert side surfaces extending between the insert forward and rear surfaces,
- a through bore having a through bore axis (A) and extending between the insert forward and rear surfaces,
- a forward cutting edge formed at an intersection of the insert upper surface and the insert forward surface, and
- an insert engaging element formed on a first portion of the insert rear surface, the first portion being located between the through bore and a first of the insert end surfaces, the insert engaging element extending in a direction between the insert end surfaces and comprising two spaced apart first insert rear abutment surfaces;
- wherein the cutting insert comprises two spaced apart second insert rear abutment surfaces at a second portion of the insert rear surface, the first and second portions of the insert rear surface being separated by the through bore;
- and
- wherein the two spaced apart second insert rear abutment surfaces are co-planar.
5 more elements
A cutting insert comprising:
- an insert upper surface and an insert lower surface forming insert end surfaces, and a peripheral surface extending between the insert end surfaces, the peripheral surface comprising:
- opposing insert forward and rear surfaces and opposing insert side surfaces extending between the insert forward and rear surfaces,
- a through bore having a through bore axis (A) and extending between the insert forward and rear surfaces,
- a forward cutting edge formed at an intersection of the insert upper surface and the insert forward surface, and
- an insert engaging element formed on a first portion of the insert rear surface, the first portion being located between the through bore and a first of the insert end surfaces, the insert engaging element extending in a direction between the insert end surfaces and comprising two spaced apart first insert rear abutment surfaces;
- wherein the insert lower surface comprises two spaced apart insert lower abutment surfaces;
- and
- wherein the two spaced apart insert lower abutment surfaces are co-planar.
5 more elements
A cutting tool comprising:
- an insert holder comprising:
- an insert pocket, the insert pocket comprising a pocket rear surface, a pocket lower surface adjacent the pocket rear surface and a threaded bore extending rearwardly from the pocket rear surface and having a threaded bore axis (B),
- the pocket rear surface having a pocket first end and a pocket second end remote from the pocket first end, the pocket first and second ends are located at opposite sides of the threaded bore in a direction from the pocket lower surface to the threaded bore, wherein
- the pocket rear surface comprises at the pocket first end thereof, a pocket engaging element that extends in a direction from the pocket first end to the pocket second end, the pocket engaging element comprising two spaced apart first pocket rear abutment surfaces, and
- a cutting insert comprising:
- an insert upper surface and an insert lower surface forming insert end surfaces, and a peripheral surface extending between the insert end surfaces, the peripheral surface comprising:
- opposing insert forward and rear surfaces and opposing insert side surfaces extending between the insert forward and rear surfaces,
- a through bore having a through bore axis (A) and extending between the insert forward and rear surfaces,
- a forward cutting edge formed at an intersection of the insert upper surface and the insert forward surface, and
- an insert engaging element formed on a first portion of the insert rear surface, the first portion being located between the through bore and a first of the insert end surfaces, the insert engaging element extending in a direction between the insert end surfaces and comprising two spaced apart first insert rear abutment surfaces;
- wherein:
- the cutting insert is seated in the insert pocket of the insert holder and retained by a retaining screw;
- and
- the first insert rear abutment surfaces abut the first pocket rear abutment surfaces.
11 more elements
A cutting tool comprising:
- an insert holder having an insert pocket, a cutting insert seated in the insert pocket and a retaining screw, the cutting insert comprising:
- an insert upper surface and an insert lower surface forming insert end surfaces, and a peripheral surface extending between the insert end surfaces, the peripheral surface comprising:
- opposing insert forward and rear surfaces and opposing insert side surfaces extending between the insert forward and rear surfaces,
- a through bore having a through bore axis (A) and extending between the insert forward and rear surfaces,
- a forward cutting edge formed at an intersection of the insert upper surface and the insert forward surface,
- an insert engaging element formed on a first portion of the insert rear surface, the first portion being located between the through bore and a first of the insert end surfaces, the insert engaging element extending in a direction between the end surfaces and comprising two spaced apart first insert rear abutment surfaces, and
- two spaced apart second insert rear abutment surfaces formed on the second end of the insert rear surface,
- the insert lower surface comprising two spaced apart insert lower abutment surfaces,
- the insert pocket comprising a pocket rear surface, a pocket lower surface adjacent the pocket rear surface and a threaded bore extending rearwardly from the pocket rear surface and having a threaded bore axis (B),
- the pocket rear surface having a pocket first end and a pocket second end remote from the pocket first end, the pocket first and second ends are located at opposite sides of the threaded bore in a direction from the pocket lower surface to the threaded bore,
- the pocket rear surface comprising at the pocket first end thereof a pocket engaging element that extends in a direction from the pocket first end to the pocket second end, the pocket engaging element comprising two spaced apart first pocket rear abutment surfaces,
- the second end of the pocket rear surface comprising two spaced apart second pocket rear abutment surfaces,
- the pocket lower surface comprising two spaced apart pocket lower abutment surfaces, wherein:
- the retaining screw passes through the through bore of the cutting insert and threadingly engaging into the threaded bore, the first insert rear abutment surfaces abut the first pocket rear abutment surfaces, the second insert rear abutment surfaces abut the second pocket rear abutment surfaces, and, the insert lower abutment surfaces abut the pocket lower abutment surfaces.
11 more elements
Dependencies are inferred from the claim text.