1, machining arc is basically formed by arc interpolation on the XZ axis of lathe, and the instruction is G02/G03.

2. Use the ball end mill. In order to ensure the rigidity of the handle, the ball head is slightly larger and can be used for powerful turning. The tool path of rough turning is concentric circle mode. If the concave arc requires higher precision, finish turning and replace it with a tool with smaller ball head and higher precision.

3, CNC lathe, turning center is a kind of high precision, high efficiency automatic machine tools. The machine tool is equipped with multi-station turret or power turret, which has a wide range of machining performance, and can process linear cylinders, oblique cylinders, arcs, threads, grooves, worms and other complex workpieces. It has a variety of compensation functions of linear interpolation and circular interpolation, and has played a good economic effect in the mass production of complex parts.