SCHNEIDEINSATZ FÜR GEWINDESCHNEIDEN UND EINSTECHEN.

摘要

PCT No. PCT/SE90/00378 Sec. 371 Date Nov. 26, 1991 Sec. 102(e) Date Nov. 26, 1991 PCT Filed May 31, 1990 PCT Pub. No. WO90/14930 PCT Pub. Date Dec. 13, 1990.In thread cutting and slotting, indexable inserts of hard metal are now used. Usually, the inserts used have been of triangular type. In order to improve cutting economy, implying improved positioning, closer tolerances and increased strength, the insert (1) is formed with four cutting edges (2) with intermediate contact surfaces (4, 5) and is adapted for vertical mounting in an insert holder (9). Through this design, the cutting forces will be absorbed in a large angular area of the cutting edges, and the cutting forces will essentially act in the plane of the insert.