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测量直径大于120毫米两个大孔或一大一小两孔之间的中心距,有一种不用配制心轴的巧妙测量方法,现介绍如下:光测出大孔直径D和另一孔直径d,再测出分厘卡的卡爪直径L(一般都是整数),并量出两孔之间壁厚M。根据勾股弦定理: O’_1B=((D~2-L~2)~(1/2))/2;O’_2=((D~2-L~2)~(1/2))/2两孔中心距A=M+O’_1B+O’_2C=M+(((D~2-L~2)~(1/2))+((d~2-L~2)~(1/2)))/2
Measurement of diameter greater than 120 mm two large holes or a small hole size between the center distance, there is no preparation of the mandrel ingenious measurement methods are as follows: Light measured the diameter of the hole D and the diameter of the other hole d , And then measure the diameter of the jaws of the PCT (usually an integer), and measure the wall thickness M between the two holes. According to the Pythagorean theorem: O’_1B = ((D ~ 2 ~ L ~ 2) ~ (1/2)) / 2; O’_2 = ((D ~ 2 ~ L ~ 2) ~ (1/2) ) / 2 center distance between two holes A = M + O’_1B + O’_2C = M + (((D ~ 2-L ~ 2) ~ (1/2)) + (1/2))) / 2