| 摘要 |
PCT No. PCT/DE93/01108 Sec. 371 Date May 11, 1995 Sec. 102(e) Date May 11, 1995 PCT Filed Nov. 18, 1993 PCT Pub. No. WO94/12302 PCT Pub. Date Jun. 9, 1994A cutting insert for material-removing machining is formed with at least one generally straight cutting edge and a central flat plateau spaced backward from and at a predetermined height above the cutting edge. A plurality of elongated ridge-like chip-forming elements each extend along a respective longitudinal axis forming a respective acute angle to a respective perpendicular to the cutting edge from a leading end spaced backward from the cutting edge to a trailing end at the plateau and are each formed of a row of discrete bumps defining a contour line having adjacent the rear end a rear portion of a maximum height at least equal to that of the plateau, forward therefrom a front portion of a minimum height, and a rising intermediate portion having a length equal to at least half a length of the respective element. The cutting insert further is formed with a land extending along the cutting edge between the front ends and the cutting edge and a groove extending parallel to the cutting edge between the land and the plateau, the chip-forming elements being mainly in the groove. |
