Patent EP0046511A2 successfully refreshed from Google Patents.
EP0046511A2
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Cutting insert
Assignee: Kennametal Inc
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Filing: 1981-07-22
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Granted: —
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Expires: 2001-07-22
Abstract
Abstract A cutting insert with indexable cutting edges with a chip-breaker configuration which comprises discrete recesses spaced along the length of the cutting insert. The cutting insert has a descending wall that joins the cutting edge orthe land behind the cutting edge with a planar floor that extends toward the center of the insert. The recesses are formed in the descending wall adjacent the cutting edge or land behind the cutting edge and are concave facing outwardly as they extend inwardly of the insert. The inserts are coated, preferably with a TiN over TiC chemical vapor deposition coating (Figure 1).
Inventors
- 👤 Donald Wilson Warren
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 06:21
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/22; B23B27/14; B23B27/141; B23B27/143; B23B2200/00; B23B2200/08; B23B2200/085; B23B2200/20; B23B2200/205; B23B2200/32; B23B2200/323
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
113 words
A cutting insert which comprises: a body that has top and bottom faces and a peripheral wall joining said faces; said body having a polygonal shape when viewed in plan; cutting edges formed at the juncture of said peripheral wall with one of said top and bottom faces; a planar descending wall extending from the cutting edge downwardly to a planar floor which extend toward the center of said body; characterized in that individual discrete recesses are formed and spaced along the length of the cutting edges in the upper portion of said planar descending wall; said recesses when viewed in side appearing concave facing outwardly and extending from the cutting edge inwardly.
Claim 2
Dependent Claim
113 words
A cutting insert which comprises: a body that has top and bottom faces and a peripheral wall joining said faces; said body having a polygonal shape when viewed in plan; cutting edges formed at the juncture of said peripheral wall with one of said top and bottom faces; a planar descending wall extending from the cutting edge downwardly to a planar floor which extend toward the center of said body; characterized in that individual discrete recesses are formed and spaced along the length of the cutting edges in the upper portion of said planar descending wall; said recesses when viewed in side appearing concave facing outwardly and extending from the cutting edge inwardly.
Claim 3
Dependent Claim
21 words
A cutting insert according to Claim 1 further characterized in that said recesses have a rectangular configuration when viewed in plan.
Claim 4
Dependent Claim
31 words
A cutting insert according to Claims 1 or 2 further characterized in that one of said recesses is located at the juncture of two of the sides of said polygonal body.
Claim 5
Dependent Claim
24 words
A cutting insert according to Claim 1 further characterized in that a first plane is defined containing at least two angularly related cutting edges.
Claim 6
Dependent Claim
34 words
A cutting insert according to Claim 4 further characterized in that an imaginary line can be formed through the loci of the juncture of the innermost portion of said recesses with said descending wall.
Claim 7
Dependent Claim
32 words
A cutting insert according to-Claim 5 further characterized in that a second plane is defined containing one of the cutting edges of said body and said imaginary line of the adjacent recesses.
Claim 8
Dependent Claim
30 words
A cutting insert according to Claim 6 further characterized in that said first plane forms an acute included angle of from 5 degrees to 15 degrees with said second plane.
Claim 9
Dependent Claim
31 words
A cutting insert according to Claim 7 further characterized in that the bottommost part of said recess is a perpendicular distance from said second plane of from .002 to .006 inches.
Claim 10
Dependent Claim
30 words
A cutting insert according to Claim 1 further characterized in that said recesses form a portion of an imaginary cylinder whose axis runs substantially parallel to the adjacent cutting edge.
Claim 11
Dependent Claim
27 words
A cutting insert according to Claim 9 further characterized in that the radius of said imaginary cylinder is in the range of from .030 to .050 inches.
Claim 12
Dependent Claim
32 words
A cutting insert according to Claim 5 further characterized in that the distance from the adjacent cutting edge to the imaginary line is in the range of from .030 to .050 inches.
Claim 13
Dependent Claim
30 words
A cutting insert according to Claim 1 further characterized in that planar side walls bound the lateral sides of said recesses and extend inwardly and upwardly in said insert body.
Claim 14
Dependent Claim
23 words
A cutting insert according to Claim 12 further characterized in that said planar side walls form an acute included angle with a perpendicular.
Claim 15
Dependent Claim
21 words
A cutting insert according to Claim 1 further characterized in that said recesses begin at said cutting edge and extend inwardly.
References Cited (Backward Citations)
No citation records indexed.
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