这种升降支座如同千斤顶一样,它主要用于支承轴类零件的,如图1。在检测轴类工件的跳动量时,将工件的基准部位放在两个升降支座的滚子上,用千分表测量欲检部位,旋转着工件就可测出工件的跳动量值。这样比使用V形铁检测稳定,工件转动轻快,因为工件 This lifting bearing as a jack, it is mainly used to support shaft parts, shown in Figure 1. When testing the jogging amount of the shaft type workpiece, place the reference part of the workpiece on the roller of two elevator bearings, measure the position to be inspected with the dial indicator, and measure the jitter value of the workpiece by rotating the workpiece. This is more stable than the use of V-shaped iron detection, workpiece rotation light, because the workpiece