| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for pulleys used in a belt type continuously variable transmission capable of achieving a stable accuracy while the friction coefficient of the contacting surfaces of a belt and pulley is enhanced. SOLUTION: The manufacturing method for the pulleys used in the belt type continuously variable transmission comprises three process, the first process to subject a surface hardening treatment to a tapered surface of at least the input pulley, the second process to form concentric or spiral fine grooves through a hard turning processing at the tapered surface which is surface hardened by the first process, and the third process to remove the crest from each angle shape generated in the second process. COPYRIGHT: (C)2006,JPO&NCIPI |
