“机械工人”(冷加工)1957年第10期介绍了“奇数齿轮外径的测量法”一文,该文所介绍的方法是正确的,它解决了奇数齿轮外径在测量上的困难。但是,用这种方法测量,容易使卡脚的位置左右移动,因而影响测量的准确性;并且要通过三角计算才能得出测量的结果,应用起来比较不方便。现在我来补充一种测量奇数齿轮外径的方法;这种方法很简便,不必经过三角计算,并且测量的结果很准确。测量的方法如附图所示。用卡尺的外径卡脚测量出齿轮牙齿顶面到 “Machinist” (Cold Working) No. 10 of 1957 introduced the “Odd Gear Outer Diameter Measurement” article, which describes the method is correct, it solved the Odd-numbered gear diameter measurement difficulties. However, this method of measurement, easy to move the location of the card left and right, thus affecting the accuracy of measurement; and to be calculated by triangulation in order to draw the measurement results, the application is more inconvenient. Now I’m going to add a way to measure the OD OD of the odd gears; it’s easy, it does not have to be run through triangulation, and the results are accurate. The measurement method is shown in the attached drawing. Use caliper OD caliper to measure the top surface of gear tooth