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利用L形斜块和三针,在测长仪或光学比较仪上对圆锥螺纹中径进行组合测量时,考虑到该测量方法的准确性主要取决于检具自身的精确度,为此必须事先对检具进行检定,从而准确确定L形斜块工作
When using the L-shaped ramp and the three-pin combination measurement of the diameter of the taper thread in the length measuring instrument or the optical comparator, the accuracy of the measuring method depends mainly on the accuracy of the gage itself and must be determined beforehand The test fixture, which accurately determine the L-shaped ramp work