| 摘要 |
PROBLEM TO BE SOLVED: To produce an endless metal ring which has a circumferential length of satisfactory precision, and which is used for CVT (Continuously Variable Transmission). SOLUTION: In the method of regulating the circumferential length, the circumferential length of one hoop being an endless metal ring is regulated. The method of regulating the circumferential length comprises: steps (S100, S110 and S120) where the circumferential length L (1) of the hoop before the regulation, the objective circumferential length L(4) and a spring back ratioαare read; a step (S150) where the spring back ratioαis corrected on the basis of the volume of the hoop before the regulation; a step (S180) where the spring back ratioαis corrected on the basis of the temperature of the hoop on the regulation; and a step (S190) where the circumferential length L(2) on the regulation is calculated on the basis of the circumferential length L(1) of the hoop before the regulation, the objective circumferential length L(4) and the corrected spring back ratioα. COPYRIGHT: (C)2004,JPO&NCIPI
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