Method of manufacturing washer and washer
AssigneeTaiho Kogyo Co., Ltd.
InventorHirokazu OCHIAI
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Abstract
A method of manufacturing a washer capable of improving a material yield is provided. The method includes: a preparation step of preparing a longitudinal member which includes an upper corrugated portion and a lower corrugated portion including crest portions formed on at least one of an upper surface and a lower surface and valley portions continuous to the crest portions in the right-left direction; and a deformation step of deforming the longitudinal member such that the upper surface and the lower surface are arcuate as viewed in the direction from the front to the rear.
Claims8
A method of manufacturing a washer comprising:
- a preparation step of preparing a longitudinal member which includes a corrugated portion that has a crest portion formed on each of one side surface and another side surface in a lateral direction and a valley portion continuous to the crest portion in a longitudinal direction, the crest portion formed on the one side surface and the valley portion formed on the other side surface having identical shapes, and the valley portion formed on the one side surface and the crest portion formed on the other surface having identical shapes;
- and
- a deformation step of deforming the longitudinal member such that the one side surface and the other side surface are arcuate as viewed in one direction orthogonal to the lateral direction and to the longitudinal direction.
A washer comprising a corrugated portion which includes a crest portion formed on each of an outer peripheral surface and an inner peripheral surface and a valley portion continuous to the crest portion in a circumferential direction, wherein each of the crest portion and the valley portion has an arc shape as viewed in a thickness direction.
Dependencies are inferred from the claim text.