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用同一把剃齿刀在剃削非变位齿轮或变位量较小的齿轮时显得很顺利,而在剃削正变位量较大的齿轮时往往发现剃齿刀的齿顶顶住了工件齿轮的齿根,以致使剃削无法进行。要解决这样一个工艺问题,就需引入角度变位齿轮的反变位概念。角度变位齿轮的啮合特点是由于刀具的加工移位,使啮合时两个齿轮的分度圆不相切,啮合角α不等于齿形
With the same shaving knife in the shaving non-variable gear or variable displacement of the gear is very smooth, and in the larger positive displacement shaving gear is often found tooth shaving tooth top withstand The tooth root of the workpiece gear, so that shaving can not be carried out. To solve such a technology problem, it is necessary to introduce the concept of anti-displacement gear angle change. Angle change gear meshing feature is due to the processing of the tool shift so that the two gears when engaging the pitch circle is not tangent, the engagement angle α is not equal to the tooth