加工如图1所示的零件,由于夹紧部位为曲面,采用图1α的夹紧方法,会使工件发生变形。当加工完后,松开夹具,工件发生回弹,因而使加工成的平面变成了一个曲面。改用自调式夹紧工具(图1b、图2),在夹紧时工件不发生变形。因此加工完后,工件没有回弹,保证了加工平面的 Machining parts shown in Figure 1, because the clamping site is curved, using Figure 1a clamping method, the workpiece will be deformed. When finished, the release of the fixture, the workpiece rebound, so that the processing into a flat surface into a curved surface. Switch to self-adjusting clamping tools (Figure 1b, Figure 2), the workpiece is not deformed during clamping. Therefore, after processing, the workpiece does not rebound to ensure that the processing plane