| 摘要 |
PROBLEM TO BE SOLVED: To provide a spinning processing apparatus preventing the forming force from being considerably fluctuated by canceling the effect of the centrifugal force which is changed dependent on the position of a forming roller in the radial direction.SOLUTION: The spinning processing apparatus includes: a clamp mechanism 13 for clamping a workpiece W; a rotary drum 25 to be rotated around a rotary shaft 24 along the axis J of the workpiece; a plurality of forming rollers 11 arranged to form pairs at the positional relationship of rotation symmetry; and a forming roller slide mechanism which is fixed to the rotary drum to movably support the forming rollers 11 in the radial direction of the rotary drum 25. The spinning processing apparatus has a structure provided with an urging mechanism 40 for urging the urging force which is changed so as to cancel the centrifugal force of the forming rollers 11 supported by the rotary drum 25 and increased/decreased according to the change in the turning radius including the increase/decrease of the centrifugal force to the forming rollers 11 from the outer circumferential side of the forming rollers 11. |
