Patent EP0143758A1 successfully refreshed from Google Patents.
EP0143758A1
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Cutting insert
Assignee: Seco Tools AB
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Filing: 1984-09-26
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Granted: —
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Expires: 2004-09-26
Abstract
Abstract A cutting insert (10) for chipforming machining is in the rake face (12) thereof provided with a plurality of rows (14,15, 16) having alternating raised (21; 23; 25) and depressed portions (19; 20; 24), said rows extending generally along the cutting edge (11). The width of the depressed portions (19; 20; 24) is smaller than the width of the raised portions (21; 23; 25).
Inventors
- 👤 Kaj-Ragnar Loqvist
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 05:30
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/141; B23B27/143; B23B2200/00; B23B2200/32; B23B2200/321; B23B2200/323
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
264 words
Cutting insert for chipforming machining of preferably metallic workpieces comprising at least one cutting edge (11) formed by the transition between a side surface (12) and an end surface (13) of the insert (10), wherein the side surface (12) provides rake face or contact surface between the insert and the chip formed during the machining, and the end surface (13) provides clearance surface, and wherein the rake face (12) is provided with a plurality of rows (14,15,16) having alternating raised (21;23;25) and depressed (19;20;24) portions, said rows extending along the cutting edge and said raised and depressed portions being located inside and spaced from the cutting edge, wherein raised and depressed portions in the two consecutive rows (14,15) are mutually laterally spaced, characterized in that the width of a first depressed portion (19 1 ; 20 1 ; 24 1 ), measured along the rows at the largest depth of the first depressed portion (19;20), is smaller than the width, measured along the rows, of a third raised portion ( 21 111 ; 23 111 ; 25 111 ), said first depressed portion being located between a first (21 1 ;23 1 ;25 1 ) and a second ( 21 11 ; 23 11 ; 2511) raised portion in a first row (14) nearest to the cutting edge (11), and said third raised portion being located adjacent to said first depressed portion in direction from the cutting edge (11), wherein the raised (21;23;25) and depressed (19;20;24) portions preferably are located straight behind a depressed and a raised portion, respectively, in a row next ahead.
Claim 2
Dependent Claim
264 words
Cutting insert for chipforming machining of preferably metallic workpieces comprising at least one cutting edge (11) formed by the transition between a side surface (12) and an end surface (13) of the insert (10), wherein the side surface (12) provides rake face or contact surface between the insert and the chip formed during the machining, and the end surface (13) provides clearance surface, and wherein the rake face (12) is provided with a plurality of rows (14,15,16) having alternating raised (21;23;25) and depressed (19;20;24) portions, said rows extending along the cutting edge and said raised and depressed portions being located inside and spaced from the cutting edge, wherein raised and depressed portions in the two consecutive rows (14,15) are mutually laterally spaced, characterized in that the width of a first depressed portion (19 1 ; 20 1 ; 24 1 ), measured along the rows at the largest depth of the first depressed portion (19;20), is smaller than the width, measured along the rows, of a third raised portion ( 21 111 ; 23 111 ; 25 111 ), said first depressed portion being located between a first (21 1 ;23 1 ;25 1 ) and a second ( 21 11 ; 23 11 ; 2511) raised portion in a first row (14) nearest to the cutting edge (11), and said third raised portion being located adjacent to said first depressed portion in direction from the cutting edge (11), wherein the raised (21;23;25) and depressed (19;20;24) portions preferably are located straight behind a depressed and a raised portion, respectively, in a row next ahead.
Claim 3
Dependent Claim
29 words
Cutting insert according to claim 1, wherein the width of all depressed portions (19;20;24) is smaller than the width of related raised portions (21;23;25) in a row next behind.
Claim 4
Dependent Claim
91 words
Cutting insert according to claim 1 or 2, wherein the first ( 23 1 ;25 1 ) and the second (23 11 ; 25 11 ) raised portions are formed by elongated ridges, and the third raised portion ( 23 111 ; 25111) is formed by an elongated ridge located in a second row (15) nearest to the first row (14), and wherein preferably the ridges (23 1 ), 23 11 , 23 111 ; 25 1 , 25 11 , 25 111 ) are parallel with the cutting edge (11).
Claim 5
Dependent Claim
62 words
Cutting insert according to claim 3, wherein the crests of the ridges (231, 23 11 , 23 111 ; 25 1 , 25 11 , 25 111 ) are generally planar in order to provide a supporting surface, and wherein the flanks (27) of the ridges facing the cutting edge (11) form an inclined surface having an inclination angle smaller than 4°.
Claim 6
Dependent Claim
47 words
Cutting insert according to claim 3 or 4, wherein the pitch between the ridges (23;25) is between 0.3 mm and 1.5 mm, preferably between 0.5 mm and 1.0 mm, and wherein the height of the ridges (23;25) is smaller than 0.1 mm, preferably smaller than 0.04 mm.
Claim 7
Dependent Claim
25 words
Cutting insert according to any of the preceding claims, wherein the depressed portions (20) are located substantially in the plane of the rake surface (12).
Claim 8
Dependent Claim
85 words
Cutting insert according to claim 1 or 2, wherein the first depressed portion (19 1 ) is formed by a cavity in the rake face (12), wherein the first (21 1 ) and the second (21 11 ) raised portion are located substantially in the plane of the rake face (12), and wherein the third raised portion (21 111 ) is formed by a raised portion located between a second (19 11 ) and a third (19 111 ) cavity in the second row (15).
Claim 9
Dependent Claim
74 words
Cutting insert according to claim 1 or 2, wherein the first depressed portion is a cavity (24 1 ) in the rake face (12), the first (25 1 ) and second (25 11 ) raised portion are portions projecting above the rake face (12), and wherein the third raised portion (25 111 ) is located between a second (24 11 ) and a third ( 24 111 ) cavity in the second row (15).
Claim 10
Dependent Claim
25 words
Cutting insert according to claim 7 or 8, wherein the depth of the cavities (19;24) is smaller than 0.1 mm, preferably smaller than 0.04 mm.
Claim 11
Dependent Claim
59 words
Cutting insert according to claim 9, wherein the width of the cavities (19;24) is between 0.3 mm and 0.6 mm, the length of the cavities (19;24), measured perpendicular to the rows, is between 0.3 mm and 0.8 mm, and the pitch between the cavities (19;24) is between 0.3 mm and 1.5 mm, preferably between 0.5 mm and 1.0 mm.
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