简易夹具,适用于小形套类零件的批量生产,尤为没有空压站的情况下更为适用。结构原理如图,由螺母3转动,推动横销2的轴向移动,使端部锥度带动三个圆柱销5作径向移动。若横销2按图箭头所示方向运动,则圆柱销5张开,夹紧工件。反之,由于碟形弹簧7的作用,使圆柱销5作向心运动,松开工件。 Simple fixtures, suitable for small sets of parts of the mass production, especially in the absence of air compressor station more applicable. The principle of the structure is shown in the figure, which is rotated by the nut 3 to push the axial movement of the transverse pin 2 so that the end taper drives the three cylindrical pins 5 to move radially. If the cross pin 2 moves in the direction of the arrow, the pin 5 opens and clamps the workpiece. On the other hand, due to the action of the coned disc spring 7, the cylindrical pin 5 moves centripetally to release the workpiece.