ROUND DIE FOR FORM ROLLING AND FORM ROLLING METHOD OF ROUND DIE FOR FORM ROLLING

摘要

PROBLEM TO BE SOLVED: To provide round dies for form rolling capable of easily performing form rolling on a plurality of workpieces or the same portion of a workpieces to be form-rolled with one form rolling board, and a form rolling method of round dies for form rolling.;SOLUTION: The round dies for form rolling are round dies 10, 20 for form rolling detachably attached to main spindles 5, 6 for form rolling tool of a form rolling board. The round dies 10, 20 for form rolling are formed by juxtaposing two or more round die bodies 11, 12, etc. in the axial direction of the main spindles 5, 6. The round die bodies 11, 12, etc. have projection-shaped outer peripheral faces 11a, 12a, etc. formed in a projection shape from the other outer peripheral faces 11c, 12c, etc. by predetermined angles, and uneven form rolling faces are formed on the projection-shaped outer peripheral faces. The round dies 10, 20 for form rolling are combined such that positions of the projection-shaped outer peripheral faces in the rotation direction are not overlapped, and form rolling is performed on the plurality of parts to be form-rolled or the same parts to be form-rolled of the workpieces with the uneven form rolling faces on the projection-shaped outer peripheral faces.;COPYRIGHT: (C)2009,JPO&INPIT