CONTINUOUSLY VARIABLE TRANSMISSION METAL ELEMENT

摘要

A continuously variable transmission metal element includes a first ring slot, a second ring slot, a neck portion, an ear portion, and a body portion. The body portion includes an inclined surface. A plate thickness of the continuously variable transmission metal element in a longitudinal direction at an inner end of the inclined surface in a radial direction is larger than a distance between a first metal mold molding surface of a first metal mold and a second metal mold molding surface of a second metal mold in the longitudinal direction at a position corresponding to the inner end of the inclined surface. The first metal mold and the second metal mold constitute a metal mold to press a roughly formed metal element material between the first metal mold molding surface and the second metal mold molding surface so as to provide the continuously variable transmission metal element.

主权项

1. A continuously variable transmission metal element formed by subjecting a roughly formed metal element material to press and finish forming using a metal mold, the metal element comprising:
a pair of ring slots into which a pair of metal rings are fitted; a neck portion located between the pair of ring slots; an ear portion connecting to an outer side in a radial direction of the neck portion; and a body portion that connects to an inner side in the radial direction of the neck portion and has saddle surfaces supporting circumferential surfaces of the metal rings and has an inclined surface on a front face thereof via a rocking edge extending in a lateral direction, the inclined surface having its inner side in the radial direction inclined rearward, wherein a plate thickness in a longitudinal direction of the metal element subjected to the finish forming at an inner end in the radial direction of the inclined surface is larger than a clearance in the longitudinal direction of a molding surface of the metal mold corresponding to the inner end in the radial direction of the inclined surface.