| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a rolling bearing device for wheels on which teeth of a desired shape can be formed on an end surface in the axial direction of the end of a shaft body. SOLUTION: In the method of manufacturing the rolling bearing device, by rotating a caulking punch 18 while pressing it to the end of the shaft body 2, the end is expanded outside up to a first state (Fig. 2 (b)). Then, by rotating a teeth forming punch 22 while pressing it to the end of the shaft body 2, the end is expanded further from the first state to a second state and caulked (Fig. 2 (c)). A plurality of teeth 25 are formed on the lower surface of the teeth forming punch 22. The shape of the teeth 25 is transferred (coining) to the end of the shaft body 2 when the end of the shaft body 2 is expanded outside up to the second state, so that a plurality of teeth 16 each extending in the radial direction of the shaft body 2 are formed on the end surface 15 in the axial direction. COPYRIGHT: (C)2011,JPO&INPIT |
