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1. (WO2018221646) ENDLESS RING PRODUCTION METHOD

Pub. No.:    WO/2018/221646    International Application No.:    PCT/JP2018/020934
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Fri Jun 01 01:59:59 CEST 2018
IPC: B21D 53/14
C21D 9/40
F16G 5/16
Applicants: AISIN AW CO., LTD.
アイシン・エィ・ダブリュ株式会社
Inventors: KATSUDA, Masahiko
勝田 匡彦
ITO, Yohei
伊藤 洋平
OHATA, Hiroyuki
大畑 拓之
OBAYASHI, Takashi
尾林 崇士
Title: ENDLESS RING PRODUCTION METHOD
Abstract:
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.