US 2019/0168351 A1 · METHOD FOR MANUFACTURING RING AND RING POLISHING APPARATUS

Abstract

Provided is a method for manufacturing an endless metal ring for a continuously variable transmission using a transmission belt formed by binding a plurality of elements with the ring. A tubular body is cut into a plurality of ring bodies, and under tension, the ring body is rotated in a circumferential direction, and a grinding wheel is pressed against a lateral end of the ring body from an outer toward an inner peripheral side of the ring body to remove an edge portion on the outer peripheral side of the lateral end of the ring body formed by the cutting, and a grinding wheel is pressed against the lateral end of the ring body from the inner toward the outer peripheral side of the ring body to remove an edge portion on the inner peripheral side of the lateral end of the ring body formed by the cutting.

Claims6

Dependent claims

A method for manufacturing an endless metal ring for a continuously variable transmission using a transmission belt that is formed by binding a plurality of elements with the ring, wherein

after a tubular body formed by butt welding ends of a strip is cut into a plurality of ring bodies, the ring body being under tension is rotated in a circumferential direction, and a grinding wheel is pressed against a lateral end of the ring body from an outer peripheral side toward an inner peripheral side in a thickness direction of the ring body to remove an edge portion which is on the outer peripheral side of the lateral end of the ring body and has been formed by the cutting, and a grinding wheel is pressed against the lateral end of the ring body from the inner peripheral side toward the outer peripheral side in the thickness direction of the ring body to remove an edge portion which is on the inner peripheral side of the lateral end of the ring body and has been formed by the cutting.

A ring polishing apparatus for polishing into a convex arc shape a lateral end of an endless metal ring for a continuously variable transmission using a transmission belt that is formed by binding elements with the ring, comprising:

a rotating unit that has a first roller and a second roller and that rotates the ring wound around the first roller and the second roller and under tension in a circumferential direction;
a first polishing unit that has a concave arc-shaped first polishing portion and that presses the first polishing portion against the lateral end of the ring from an outer peripheral side toward an inner peripheral side in a thickness direction of the ring to polish the outer peripheral side of the lateral end of the ring into a convex arc shape;
and
a second polishing unit that has a concave arc-shaped second polishing portion and that presses the second polishing portion against the lateral end of the ring from the inner peripheral side toward the outer peripheral side in the thickness direction of the ring to polish the inner peripheral side of the lateral end of the ring into a convex arc shape.

1 more element

a rotating unit that has a first roller and a second roller and that rotates the ring wound around the first roller and the second roller and under tension in a circumferential direction;
and
a polishing unit that has a concave arc-shaped first polishing portion and a concave arc-shaped second polishing portion which are formed next to each other in a thickness direction of the ring so that the ring set on the rotating unit is located between the first polishing portion and the second polishing portion, and that presses the first polishing portion against the lateral end of the ring from an outer peripheral side toward an inner peripheral side in the thickness direction of the ring to polish the outer peripheral side of the lateral end of the ring into a convex arc shape, and presses the second polishing portion against the lateral end of the ring from the inner peripheral side toward the outer peripheral side in the thickness direction of the ring to polish the inner peripheral side of the lateral end of the ring into a convex arc shape.

Dependencies are inferred from the claim text.

Method for manufacturing ring and ring polishing apparatus

Life of this patent

Method for manufacturing ring and ring polishing apparatus

Life of this patent

Abstract

Claims6