Schneideinsatzspannmechanismus

摘要

A throw away chip 37 for mounting to a seat of a chip clamp mechanism, said chip being approximately a square flat shape and comprising: a front surface 37a; a back surface arranged as a seating surface 37b; the front surface being larger than said back surface; four side surfaces arranged as flank surfaces 37c; a cutting edge 37d formed by a ridgeline where a flank surface 37c intersects said front surface 37a; an annular shaped and tapered recessed portion 37f in said back surface 37b; a chip hole 37e formed at the center of the throw away chip 37 so as to pass therethrough from said front surface 37a to said tapered recessed portion 37f to accommodate a chip mounting screw 38 for securing the throw away chip to said chip clamping mechanism; said chip hole 37e having an inside periphery formed to a taper shape for gradually reducing the diameter of the chip hole 37e towards said annular shaped and tapered recessed portion 37f.