The aforementioned half toroidal CVT disk or either

摘要

PROBLEM TO BE SOLVED: To provide a grinding work method capable of securing concentricity of an inside surface part and a toroidal surface even if outside surface grinding of a half toroidal CVT disc is abolished and capable of reducing a cost by reducing the number of processes.;SOLUTION: This grinding work method for using a chuck mechanism 20 for holding the half toroidal CVT disc 19 having an inside surface involute spline part 19b, an outside surface part 19c and the toroidal surface 19a having a prescribed machining allowance and a grinding mechanism 11 having a grinding wheel 17 as a tool for grinding the half toroidal CVT disc 19 and grinding the toroidal surface by a grinding machine inclined by a specific angle to the other in either one of the half toroidal CVT disc 19 or the grinding wheel 17, is characterized by the grinding of the toroidal surface 19a chucked by the chuck mechanism 20 after centering on the basis of the worked inside surface involute spline part 19b before heat treatment of the half toroidal CVT disc 19.;COPYRIGHT: (C)2001,JPO