MACHINE TOOLS WITH MAIN SPINDLE CHUCK REPLACING MECHANISM, CAPABLE OF SHORTENING WORK REPLACEMENT TIME WITH SIMPLE SET-UP WITHOUT DETECTING ROTATION SPEED OF A MAIN SPINDLE CHUCK

摘要

PURPOSE: A machine tools with main spindle chuck replacing mechanism is provide to achieve low parts count by selectively meshing a driving gear with a driven gear misaligned in the axial direction with engagement and disengagement of a main spindle.;CONSTITUTION: A machine tools with a main spindle chuck replacing mechanism comprises a preliminary rotation transmitting mechanism(7). The preliminary rotation transmitting mechanism is located in a machining position(P1). The preliminary rotation transmitting mechanism delivers the rotation of a main spindle motor(4) to a main spindle chuck(5) not combined with a chuck joining unit(3a) of a main spindle(3) through different route from chuck joining unit. The preliminary rotation transmitting mechanism generates difference of rotation speed between the main spindle chuck and the main spindle. A speed difference absorbing mechanism(23) absorbs the difference of rotation speed when the main spindle chuck is joined with the chuck joining unit.;COPYRIGHT KIPO 2010