| 摘要 |
PROBLEM TO BE SOLVED: To enhance the thickness-directional dimensional precision of an element, when manufacturing the element of a continuously variable transmission constituting a driving belt of the continuously variable transmission, by blanking a metal band plate. SOLUTION: A slit 58 extended in the longitudinal direction of the metal band plate 50 is formed at first at substantially the central part of the metal band plate 50 in the width-direction. Then a width-directional end part of the metal band plate 50 is crushed, and the thickness-directional dimension of the width-directional end part is shortened. A flow of mass is generated from the width-directional end part toward the central part, in accompaniment thereto, in the metal band plate 50. The flow is absorbed by the slit 58. Finally, the head parts 16, 16 of the two elements 10, 10 are punched opposedly in the width direction of the metal band plate 50. COPYRIGHT: (C)2011,JPO&INPIT
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