从日常修理工作中知道,在千分尺的螺旋副中,丝杆与螺母的磨损情况是不一样的:螺母的磨损是均匀的,而丝杆上各部分的磨损是不均匀的,经常使用的部分磨损的多,使用少的地方磨损的少。由图1看出,在均匀磨损的情况下,螺距h是不变的,只有在磨损不均匀的地方才产生较大的螺距误差(图2)。由于螺母螺距的磨损是均匀的,因此为了修复千分尺示值,只要修理丝杆就可以了。 From the daily repair work to know that in the micrometer screw pair, the screw and nut wear is not the same: the wear and tear of the nut is uniform, and the wear and tear of the various parts of the screw is not uniform, often used part Wear more, less use less wear and tear. Figure 1 shows that, in the case of uniform wear, the pitch h is invariant, and large pitch errors only occur where the wear is not uniform (Figure 2). As the nut pitch is uniform wear and tear, so in order to repair the micrometer value, as long as the screw repair on it.