Method for forming cam face on structure member of loading cam device for toroidal-type continuously variable transmission

摘要

To provide a loading cam device which is capable of ensuring a necessary accuracy, improving the efficiency of the formation of a cam face, and reducing the manufacturing cost. A cam plate (9) is fixedly secured to a chuck (17) rotationally driven by a main shaft. A cutter is axially placed on one surface of the cam plate. A holder holding the cutter (20) is axially displaced in synchronism with the rotation of the chuck to make an irregularity conforming with the cross-sectional configuration of the cam face. In addition, a header (18) is displaced in the diametrical directions (x) of the chuck to make an irregularity throughout.