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测量双线梯形螺纹中径尺寸精度偏差、螺距精度尺寸偏差是在车工生产实习过程中的一种必要的手段,单线梯形螺纹测量要求将用标准环规、三针测量和单针测量三种测量方法进行,但标准环规造价昂贵、三针测量时采用的量针也需要专门制造。用三针测量双线梯形螺纹中径时,有时由于车刀
Measurement of double-thread trapezoidal thread diameter size precision deviation, pitch accuracy size deviation is a necessary means in the car production internship process, single-thread trapezoidal thread measurement requirements will be standard ring gauge, three-pin measurement and single-pin measurement of three measurements Method, but the standard ring gauge cost is expensive, the three needle needle used in the measurement need to specialize in manufacturing. With three-pin measuring double-thread trapezoidal diameter, sometimes due to turning tool