| 摘要 |
A method of forming an integral tubular projection in a disk-shaped work by spinning is provided. In the method, h=0.1 to 0.5t, d=0.25 to 0.94D, T=0.5 to 7h, and V=0.029 to 0.234piD2h where h is a depth by which a forming roller cuts into the work, t is a thickness of the work, d is an outer diameter of the tubular projection, D is a diameter of a circle including a point where the spinning by the forming roller starts, T is a thickness of a wall of the tubular projection, and V is a volume of the tubular projection. A product produced by the above method is also provided.
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