Patent ID: 9452479
Filing Date: 2016-09-27
CPC Classification: B23C,Y10T

Claim Text:
1. A machining tool for machining fiber reinforced materials, the machining tool comprising: a plurality of at least four main flutes, each of which forms with a respective trailing premachining land a cutting wedge with a premachining cutting edge; a plurality of auxiliary flutes a number of which corresponds to a number of the main flutes, wherein each of the plurality of auxiliary flutes: wherein the premachining cutting edges extend alternately on the one hand around the tool axis with a right-hand twist and on the other hand along the tool axis untwisted or at least with a twist being in absolute value smaller than the right-hand twist of the directly leading premachining cutting edge, wherein the postmachining cutting edges trailing the right-hand twisted premachining cutting edges extend untwisted along the tool axis or at least with a twist being in absolute value smaller than the right-hand twist of the directly leading premachining cutting edge, and wherein the postmachining cutting edges extend with a right-hand twist around the tool axis, which are trailing the untwisted premachining cutting edges or trailing the premachining cutting edges, which extend at least with a twist being in absolute value smaller than the right-hand twist of the directly leading premachining cutting edge.