JPS6451206A - Throw away tip for turning work - Google Patents

Abstract

PURPOSE:To let chips left untearable be taken out surely toward the definite direction without getting entangled about a shank and the like by providing a slant face for the neighborhood of a main cutting edge, which is connected continuously with a chip breaker while covering the upper surface and a lateral flank. CONSTITUTION:When precision turning finish works are processed by a throw away tip 11, chips produced by a main cutting edge 13 are left untearable even by a chip breaker 12 for flowing toward a recess 16 for chip discharge from the main cutting edge 13 through the groove of the chip breaker 12. In this case, the chips produced are in a spiral or linear form depending on the turning condition or the material used to be cut. The tip end of the chips arriving at the recess 16 for chip discharge changes their running direction at this place for entering into the recess 16 for chip discharge so as to be guided into the rear side of the throw away tip 11 wherein the chips whose direction has been determined once are discharged out following a passage through which the tip end thereof has passed.