| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a pulley for a belt-type continuously variable transmission, capable of producing a belt-type CVT pulley having improved oil holding property and improved abrasion resistance with excellent reproducibility, and of achieving a simplified process and lower cost. SOLUTION: The method includes a grinding step of forming the shape of a contact surface, a grooving step of roughening the surface roughness of the formed contact surface to form grooves therein, and a contact surface polishing step of polishing the contact surface having the formed grooves with a lapping film to form oil grooves for holding a lubricant oil. The surface roughness of the contact surface is such that the maximum height roughness Rz is 4μm or less, the mean length RSm of the roughness curve elements is 30 to 60μm, the skewness Rsk of the roughness curve is -2.7 to -0.6 (no unit), the projecting peak height Rpk is 0.09μm or less, and the projecting valley depth Rvk is 0.4-1.3μm. COPYRIGHT: (C)2011,JPO&INPIT |
