Patent ID: 7052217

Claim:
A multi-edged rotary tool for machining, comprising: a carrier; a plurality of holders, each holder of said plurality of holders having a front end and a rear end, said each holder being fixed to said carrier by a fastener received through a hole defined in said each holder between said front end and said rear end; a plurality of cutting tips respectively connected to said plurality of holders proximate said front ends, said each holder having an aperture therein and forming a parallel bending spring arrangement such that at least a portion of said each holder is elastically deflectable proximate said cutting tip; and an adjusting device comprising a differential screw threadably engaged in a first tapered inner sleeve having a tapered outer contour tapering in a first direction, a first outer sleeve having a tapered inner contour complementary to said first tapered inner sleeve and held thereon, and pressure pieces supported on at least a portion of said first outer sleeve, said pressure pieces radially movably holding said holders, wherein said first outer sleeve is axially movable in response to rotation of said differential screw and said holders are radially movable by said pressure pieces in response to an axial adjustment movement of said first outer sleeve.