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|1. (WO2018221646) ENDLESS RING PRODUCTION METHOD|
|Applicants:||AISIN AW CO., LTD.
|Title:||ENDLESS RING PRODUCTION METHOD|
This endless ring production method for producing an endless ring used for a transmission belt of a belt-type continuously variable transmission comprises: a welding step for forming an endless cylindrical body by welding butted ends of a belt-like metal plate; a cutting step for cutting the cylindrical body into a ring body of a prescribed width; an opening formation step for forming an opening in the cut ring body; a grinding step for grinding the opening and a width-direction end of the ring body in which the opening has been formed; a rolling step for rolling the ground ring body; and a circumferential length adjustment step for adjusting the circumferential length of the rolled ring body.