| 摘要 |
<p>The present invention has an object to provide a manufacturing method for a toothed member, a manufacturing device for a toothed member, and a toothed member that prevent trapping of the material to improve the durability of the toothed member. Thus, an aspect of the present invention provides a manufacturing method for a toothed member that includes a thickened tooth shaping process in which a toothed shape is formed on a side wall portion of a cup-shaped raw material while making a thickness of the side wall portion larger than a thickness of a bottom surface portion of the cup-shaped raw material by compressing the side wall portion, the cup-shaped raw material including the bottom surface portion and the side wall portion which is cylindrical and provided to extend upright from an outer peripheral end portion of the bottom surface portion, in which the thickened tooth shaping process includes applying to a restraint die that restrains the bottom surface portion such a load that allows the restraint die to keep restraining the bottom surface portion.</p> |
