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(一) 齿轮传动是机械传动中结构紧凑,效率较高,又是使用最广的传动系统。在中等模数系列的渐开线齿轮加工中,用公法线长度测量齿厚的方法较为普遍。特别在成批生产中宜于以内孔作为工艺基准,可降低齿顶回的加工精度(如公差、光洁度、齿坯径向跳动);又便于利用普通的精密游标卡尺进行齿厚测量。对于非变位(ξ=0)的圆柱齿轮公法线长度测量尺寸及其卡入齿数的计算公式与图表,各种文献作了大量正确的介绍。而关于变
(A) gear transmission is a mechanical transmission in a compact, high efficiency, but also the most widely used transmission system. In the medium module series of involute gear machining, the method of measuring the tooth thickness with the common normal length is more common. Especially in mass production, it is appropriate to use the inner hole as the process reference, which can reduce the processing precision (such as tolerances, smoothness and radial pulsation of the tooth tips) back to the top of the tooth. It is also convenient to measure the tooth thickness by using ordinary precision vernier calipers. For non-displacement (ξ = 0) of the cylindrical gear common normal length measurement dimensions and the number of teeth into the calculation formula and chart, a variety of literatures made a lot of correct introduction. And about change