图1所示为某汽车前轴工序简图。按常规加工方法，由于工件调头安装，会存在机床工装以及工件装夹定位等一系列误差的影响，使加工出的工件平行度常常超差。为此，我厂研制了一次定位饶削两端面的专用组合刀具，满足了图样要求，提高了生产效率。一、刀具结构刀具结构如图2所示 Figure 1 shows a car front axle process diagram. According to conventional processing methods, due to the work of turning the first installation, there will be machine tooling and workpiece clamping position and a series of errors, so that the processing of the workpiece parallelism often ultra-poor. To this end, I plant developed a Rao cut both ends of the special combination of tools to meet the design requirements, improve production efficiency. First, the tool structure Tool structure shown in Figure 2