一、两孔同轴度气动测量原理 根据 GB 1183-80规定,同轴度公差带是直径为公差值t,且与基准轴线同轴的圆柱面内的区域(图1)。 按照这一定义,同轴度误差应等于被测轴线至基准轴线最大距离e的两倍。而当采用气动进行测量时,在测头定位基准轴线和基准孔轴线一致的条件下,测头转一周 First, the two-hole coaxiality pneumatic measuring principle According to the provisions of GB 1183-80, coaxial tolerance band diameter is the tolerance value t, and the axis of the coaxial with the axis of the region within the cylinder (Figure 1). According to this definition, the concentricity error should be equal to twice the maximum distance e from the measured axis to the reference axis. And when using the pneumatic measurement, the probe positioning datum axis and the reference hole axis under the same conditions, the probe turn a week