Patent ID: 6958000
Filing Date: 2005-10-25
Classification: B23F,Y10T

Abstract:
1. A finishing wheel holding mechanism for a gear finishing apparatus which subjects to finish processing a gear piece engaged with a finishing wheel having internal teeth by turning the finishing wheel, provided with: a head frame having at the center an opening portion for holding a finishing wheel and supported by a base portion of the gear finishing apparatus, and an annular finishing wheel holder permitting the fitting of a finishing wheel on the internal peripheral portion, supported within the opening portion of said head frame, and turned by a driving device within the opening portion, wherein the finishing wheel holder is provided with: a support gear which has an open end portion at the end face for finishing wheel insertion and an accepting portion for accepting in a fixed position a finishing wheel inserted through the open end portion, and receives a driving power from said driving device within said head frame, an annular shifting body which is supported by the internal peripheral portion of said support gear in said open end portion to be slidable in the axial direction of the support gear, and has an internal diameter slightly larger than the external diameter of a finishing wheel, a projection protruding in said support gear so as to serve as a stopper in contact with the insertion side end face of the finishing wheel inserted into said accepting portion, a pressing collar which is inserted, after the finishing wheel is inserted into said accepting portion, along the internal circumferential surface of said shifting body to be engaged in a locked state against coming off, and is pushed by the sliding of the shifting body toward the finishing wheel to come into contact with the end face of the finishing wheel to fix the finishing wheel, and an actuator provided in said support gear for driving said shifting body toward said accepting portion.