1问题的提出在JZ350砼搅拌机制造过程中，其主传动轴一端的内花键槽若用整体加工完成，难度太大，见图1。对此我们进行了综合分析，对其加工工艺编制出3种方案。第一，采用矩形花键拉刀。该法效率高、工艺性好、使用较多，但该工艺只适用于透孔式的花键槽轴，对该轴中的盲孔槽 1Problem raised During the manufacturing process of the JZ350砼 mixer, the internal spline groove at one end of the main drive shaft is too difficult to implement if it is completed as a whole. See Figure 1. We conducted a comprehensive analysis of this and compiled three solutions for its processing technology. First, use a rectangular spline broach. The method has high efficiency, good craftsmanship, and more use, but the process is only applicable to the through-hole splined shaft, the blind hole in the shaft