在孔系零件加工时,我们经常碰到两孔中心距的测量,常用的测量方法有两种:一种是用游标卡尺测量,利用公式L=H±(D·d/2)求得中心距(图工)。式中:L—中心距;H—两孔内(外)壁距离;D—大孔直径;d—小孔直径。另一种则用千分表架在高度游标卡尺上,通过测量以及计算求得中心距。由于这两种测量方法都必须计算,而且步骤较繁,往往是既费时间又易出差错。而对具有阶梯形平面的孔 In the processing of hole parts, we often encounter the measurement of the distance between two holes, there are two commonly used measurement methods: one is to use vernier caliper measurement, the use of the formula L = H ± (D · d / 2) to obtain the center distance (Figure workers). Where: L-center distance; H-two holes (outer) wall distance; D-large hole diameter; d-small hole diameter. The other is using a dial gauge on the height vernier caliper, measured and calculated by calculating the center distance. Because both measurement methods must be calculated and the procedure is complicated, it is often time-consuming and error-prone. For holes with a stepped plane