| 摘要 |
PROBLEM TO BE SOLVED: To provide a cylindrical workpiece spinning method enabled to perform a molding (in an arbitrary direction without being restricted within the range of the outer shape of a workpiece) exceeding the outer shape of the workpiece.SOLUTION: At a spinning time of a work 4, a second roller 12B, which has a revolution surface PL2 disposed at a position different from a revolution surface PL1 of a first roller 12A in the direction of a rotary shaft CT1 of a spindle 10 of a spinning head 7, and the first roller 12A cooperate to hold the work 4. In this state, the first roller 12A and the second roller 12B are pushed, while being revolved, onto the work 4, and a workpiece support base 3 is moved relative to the side of the spinning head 7, thereby to perform a molding work while the tube axis of a processing part 4b is directed in an arbitrary direction. |
