近年来,由于变位该轮得到广泛的应用,因此在各种机械的检修工作中,常会遇到一些变位齿轮需要测绘。但各工业国家对齿轮所订的标准不一,尤其是资本主义国家,很多是商业标准,测绘时如不摸清底细,就会使配制的齿轮啮合不良,以致必要时要成对调换,这就显得不经济。现就笔者所知,对几种常遇到的变 In recent years, due to the displacement of the wheel has been widely used, so in a variety of mechanical maintenance work, often encounter some displacement gear needs mapping. However, the standards set by various industrial countries for the gears are different. In particular, many capitalist countries are commercial standards. If the surveying and mapping are not thoroughly understood, the prepared gears will not mesh properly and will need to be swapped in pairs if necessary It seems uneconomical. Now I know, on the few often encountered change