"Morse taper working plug gauge with flat tail, type B 930" 带扁尾莫氏圆锥工作塞规B型930
Based on relevant operation results, it is concluded that under the precondition that all the thread element data like taper and pitch remain consistent, it is feasible to substitute the pitch diameter gauge and the ovality gauge for the thread work gauge. 结合生产实例分析指出,在锥度、螺距等螺纹单项参数合格稳定的情况下,用中径和椭圆度量规替代螺纹工作量规是可行的。