Patent ID: 6305696
Filing Date: 2001-10-23
Classification: B23B,B23Q,Y10T

Abstract:
A tool holder for machine tool comprising:a tool holder 10;a grip 10a provided on an outer circumference of the tool holder 10 to be held on an automatic exchange of a cutting edge 8;a first through hole 10b provided in the longitudinal center of the tool holder 10;an internal thread (g) provided on one end of the through hole 10b;a tool stopper 11 screwed on the internal thread (g), said tool stopper 11 being movable to accommodate different lengths of the cutting edge 8 and having a second through hole 11a in the longitudinal center thereof;a conical engaging body 10c provided on the other end of the through hole 10b, so that said conical engaging body 10c protrudes outwards;said tool holder constrained by two faces, wherein the conical engaging body 10c connects with a tool shank taper (n) and a flanged end face (m) of a main spindle;a mist receiving tube 12 provided on a connecting side of the through hole 10b, said mist receiving tube 12 having a through hole 12a in the longitudinal center thereof; anda communicating tube 14 provided in the through hole 12a of the mist receiving tube 12 and the second through hole 11a of the tool stopper 11, so that said communicating tube 14 bridges the third through hole 12a and the second through hole 11a to flow cutting oil directly thereinside,wherein said communicating tube 14 suitably slides in the third through hole 12a in accordance with motions of the tool stopper 11 due to the different lengths of the cutting edge 8.