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在机械量传感器的设计和制造中，由于安装和使用环境的要求，对传感器的结构尺寸的精度要求很高。在通常条件下，对于回转体的加工绝大多数都是通过车床加工来实现的．一般机床的进刀量是由床体上标有的刻线尺进行测量和控制。众所周知，这种控制的精度为主尺最小刻度的一半，
In the design and manufacture of mechanical quantity sensor, due to the requirements of installation and use of the environment, the precision of the sensor structure size is very high. Under normal conditions, the vast majority of the processing of the rotating body is achieved by lathe processing. General machine tool feed rate is marked on the bed by the ruler to measure and control. As we all know, this control accuracy of the main scale half the minimum scale,