千分尺在使用过程中 ,由于测微螺杆与螺母之间经常互相摩擦而产生磨损 ,并且常处于不均匀的磨损状态 ,所以测微螺杆在整个行程中 ,会出现轴向窜动。出现轴向窜动后 ,一般可采用锁紧调节螺母的方法来解决。但是往往由于测微螺杆磨损不均匀 ,当锁紧调节螺母后仅能消除一部分螺纹 Micrometer during use, due to the micrometer screw and nut often friction between each other and wear, and often in uneven wear, so micrometer screw in the whole journey, there will be axial movement. Axial movement occurs after the lock nut can be used to solve the general method. However, due to uneven wear of the micrometer screw, when the adjusting nut is locked, only a part of the thread can be eliminated