Title:
DEVICE AND METHOD FOR REGULATING CIRCUMFERENTIAL LENGTH OF ENDLESS METAL RING
Document Type and Number:
Japanese Patent JP3861824
Kind Code:
B2
Abstract:
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 ratio α are read; a step (S150) where the spring back ratio α is corrected on the basis of the volume of the hoop before the regulation; a step (S180) where the spring back ratio α is 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 ratio α.
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Inventors:
Koji Shimoda
Application Number:
JP2003034616A
Publication Date:
December 27, 2006
Filing Date:
February 13, 2003
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
B21D31/00; B21D53/14; F16G5/16; (IPC1-7): B21D31/00; B21D53/14; F16G5/16
Domestic Patent References:
| JP2004017071A |
Foreign References:
| WO2002038302A1 |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Takao Matsuyama
Tadashi Muto
Toshio Morita
Takao Matsuyama
Tadashi Muto
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