Method for setting free-state diameter of metal ring

摘要

A free-state diameter, upon cutting each metal ring, is set so that when the ratio of a continuously variable transmission is a value in a TOP state and a metal ring receives a severe load, a corrected amplitude of a stress on an outer peripheral surface of the metal ring calculated from an amplitude and a middle value of the stress on the outer peripheral surface of the metal ring is equal to a corrected amplitude of a stress on an inner peripheral surface of the metal ring calculated from an amplitude and a middle value of the stress on the inner peripheral surface of the metal ring. Therefore, an appropriate free-state diameter is set in consideration of a stress based on a tensile load of the metal ring and a stress based on the bending load of the metal ring.