Producing method of metal band of metal belt for belt-type continuously variable transmission and producing apparatus thereof

摘要

A producing method of a metal band of a metal belt for a belt-type continuously variable transmission includes the following steps of: superposing a predetermined number of blank rings concentrically on one another to constitute a laminated blank rings (R); fitting the laminated blank rings (R) to an outer periphery of a circle jig (1) made of material having higher thermal expansivity than that of the blank ring; heating the laminated blank rings (R) together with the circle jig (1); and deforming the laminated blank rings (R) plastically by thermal expansion of the circle jig.