辅助支承广泛用在工件刚性不足的场合。本夹具利用联动机构,使得辅助支承的夹紧在工件夹紧时自动完成。该夹具用于在组合机床上铣削机油泵安装面。工件以一面两孔定位,油缸(未画出)传动装置通过活塞杆1推动压板2将工件压紧。由于加工面悬伸、且离夹紧位置较远,为了防止工件受切削力而变形,设置顶杆12起辅助支承作用。 Auxiliary support is widely used in the case of insufficient rigidity of the workpiece. The fixture uses a linkage mechanism, so that the auxiliary support is clamped automatically when the workpiece is clamped. This clamp is used to mill the oil pump mounting surface on a combination machine. The workpiece is positioned with two holes on one side, and the actuator (not shown) drives the pressure plate 2 through the piston rod 1 to press the workpiece. Due to the overhang of the working surface and far away from the clamping position, in order to prevent the workpiece from being deformed by the cutting force, the jack 12 is provided to assist the support.