游标角度尺(0—320°)示值的修理,有时越修越坏,以至最后报废。产生示值不合格的原因是主尺圆弧导向面的磨损或因多次修理改变了原来的圆弧中心。修理其他部位和零件都不能使示值合格。但修理主尺圆弧导向面又不知修何处和修多少?我们是在万工显圆分度台上通过测量确定修理位置和修理量的,然后根据其数值在曲线磨床(MD9030)上修理。一、在万工显上精测将主尺上所有零件拆下(如图1),平放在万工显圆分度台上。以三条刻线的外端点(A、B、C)为基准找正(即第一条和最后一条以及25°那条)。让以上三端点所定圆的圆心重合于圆分度台的回转中心。如有辅助测量胎具,这项操作较易,否则可用 Vernier angle ruler (0-320 °) shows the value of the repair, and sometimes repair the worse, and eventually scrapped. Produce the indication failed because the main ruler arc guide surface wear or because of multiple repairs changed the original arc center. Repair of other parts and components can not pass the indication. However, the repair of the main guide arc guide surface and I do not know where and how much repair? We are in the million workers significant rounding table by measuring the location and amount of repair to determine the repair, and then according to its value in the curve grinder (MD9030) to repair . First, all the workers in the fine test will be the main ruler all the parts removed (Figure 1), flat on the million workers significant round table. Use the outer endpoints of the three scribes (A, B, C) as a reference (that is, the first and last ones and the 25 ° ones). Let the above three endpoints of the circle center coincide with the circular indexing table rotary center. If assisted measurement of the tire, this operation easier, otherwise available