indexable cutting insert
AssigneeWalter AG
InventorsRolf Vollmer, Horst Stihler, Siegfried Bohnet
Life of this patent
Estimating the term…
Abstract
In a cutting insert, cutting edge (9) is formed by the junction of a chip face (21, 22) and a flank (15). The flank is an extension of a straight portion (11) of a side face (5, 6) which begins at the base (2). Rather than remaining straight throughout the side face, straight portion (11) leads into a transitional face (13) used to form a strip (17), the face of which is the flank (15). Thus, the flank (15) is raised relative to an imaginary lengthening of the side face portion (11).
Claims27
An indexable cutting insert (1), which is substantially in the form of a truncated cone or truncated pyramid, comprising:
- a substantially flat base (2),
- a flat or structured top (3) spaced apart from the base (2),
- a side wall arrangement (4) extending between the base (2) and the top (3), which side wall arrangement, together with the top (3), forms a cutting edge (9) at least in a portion extending along the intersection of the side wall arrangement (4) and the top (3), and
- a setback (13), contained at least in the portion of the side wall arrangement (4) adjoining the top (3), which setback at least approximately follows a course of the cutting edge (9) and, beginning at the cutting edge (9), forms a strip (17) that at least approximately follows a contour of the cutting edge (9), which strip is raised in this portion compared with a region (11) of the side wall arrangement (4) extending in a direction toward the base (2), and a face (15) of said strip, forms a flank of the cutting insert (1).
An indexable cutting insert (1), comprising:
- a body which is substantially in the form of a truncated cone or truncated pyramid, said body having
- a substantially flat base (2),
- a flat or structured top (3) spaced apart from the base (2),
- a side wall arrangement (4) and at least one cutting edge (9),
- a setback (13) on the side wall arrangement (4) which at least approximately follows a course of the cutting edge (9) and forms a raised strip (17) that begins at the cutting edge (9) and has a flank (15),
- wherein a width (18) of the flank (15), measured in a direction perpendicular to the cutting edge (9), is approximately equivalent to a size of an allowable wear mark of the flank (15), measured in the same direction;
- the setback has a depth (19), which is between 0.02 mm and 0.4 mm;
- and a clearance angle is smaller than an angle between a line perpendicular to the base and the side wall arrangement (4).
Dependencies are inferred from the claim text.