| 摘要 |
<p>A disc spring and a production method therefor are provided in which an attempt is made to improve precision of an inside diameter portion, and in which residual stress can be applied to an inside diameter portion side edge of a tensile surface. Shot peening is carried out at at least a tensile surface 114A, after a chamfered portion 121A is formed at an inside diameter portion 112A side edge of a tensile surface 114A in a blank 100A. Residual stress is applied to the chamfered portion 121A of the inside diameter portion 112A side edge of the tensile surface 114A. The inside diameter portion 112A is machined after the shot peening. In this case, since at least an outside diameter portion side of the chamfered portion 121A remains, the remaining chamfered portion 121A constitutes the inside diameter portion 112A side edge of the tensile surface 114A after the machining. Therefore, the inside diameter portion 112 side edge of the tensile surface 114 in which the maximum stress can be generated in the disc spring 100 has residual stress.</p> |
