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目前,在拟定圆柱齿轮的加工工艺方案时,对于热处理后的基准修复工序,几乎都是根据已切齿圈的几何中心应与机床床头主轴的旋转中心重合的原则来进行设计的;其目的是使齿轮在基准修复后具有最小的齿圈径向跳动,以期提高其精加工前的精度。但是,这样的工艺方案对插齿加工的齿轮而言并不完全适用,有时甚至会适得其反,即齿轮的精度在基准修复后反而恶化了。因为,当插齿刀在安装状态下具有0.01～0.0125mm的几何偏心量时,对于分度圆直径在32～102mm范围内的齿轮而言,齿部经热处理后如采用Y4632类型的外啮合珩齿机对齿面进行精加工,则很难加工出7～JBl79—81精度的齿轮来。这一问题应引起齿轮加工工作者的注意。
At present, in the process of formulating the spur gears, almost all the reference repair processes after heat treatment are designed according to the principle that the geometric center of the ring gear should coincide with the rotation center of the machine head spindle; the purpose is So that the gear in the baseline after the repair with the smallest radial ring beating, with a view to improve its accuracy before finishing. However, such a solution is not entirely suitable for gear-driven gears and can sometimes be counter-productive, ie the accuracy of the gear deteriorates after the reference is repaired. Because, when the gear shaper in the installed state has a geometric eccentricity of 0.01 ~ 0.0125mm, for the pitch circle diameter of 32 ~ 102mm gear, the tooth after heat treatment such as the use of Y4632 type of external gear Heng Gear to the tooth surface finishing, it is difficult to process a 7 ~ JBl79-81 precision gear to. This issue should arouse the attention of gear workers.