不如图所示双键槽对称测量仪是用废游标卡尺改制的。基准固定在键槽侧面和轴外径上,通过4、5、6、7基准块及滚柱测得读数值,再把测量仪调转180°,两次测得的读数差为对称度差值。所用的百分表测头应用平面测头。使用时可根据轴的大小先调整卡尺距离,再调整百分表的位置。滚柱可用502胶水胶牢。经过一段时间的 As shown double-channel symmetry measuring instrument is the use of vernier caliper restructuring. The datum is fixed on the side of the keyway and on the outer diameter of the shaft. The readings are measured on the 4, 5, 6, 7 datum blocks and rollers. The measuring instrument is then turned 180 °. The difference between the two measured readings is the difference in symmetry. The dial indicator used is a flat probe. When used according to the size of the shaft to adjust the caliper distance, and then adjust the position of the dial indicator. Roller glue can be 502 glue. After some time