| 摘要 |
PURPOSE:To prevent a chattering stopper pin from loosening and preclude risk of deformation and vibration at the time of processing by utilizing irreversibility of a screw rotating with pneumatic pressure. CONSTITUTION:A chattering stopper pin 15 is installed, which holds the undersurface of a work to be processed so as to prevent deformation and vibration. With a pneumatic pressure a screw 25 is rotated through a rack 31, gear 29, etc., and the side face of the chattering stopper pin 15 is pressed and fixed with movement of this screw 25 in the axial direction. As a result, the screw 25 will never rotate in the opposite direction due to the counter-action to the pressing force, and this irreversibility precludes the pin 15 from loosening. |
