| 摘要 |
PURPOSE:To damp vibration of break-through and reduce bad influences due to vibration on press working by providing a fluid pressure cylinder that receives sheared platelike member in the lower die of a blanking die. CONSTITUTION:When an upper die part 1 goes down and a punch 4 begins to blank the next blank 2 from a coil material 3, the lowermost blank 2 projecting out from a die 8 goes down receiving upward energizing force of a piston 10. When the upper die part 1 arrives at the bottom dead center and blanked the blank 2, generated break-through is damped by upward energizing force of the piston 10, and the lowermost blank 2 gets out of the die 8. |
