1. Determine the type of processing from the view, whether it is a lathe workpiece or a milling machine workpiece, and whether auxiliary processing is required, such as welding, grinder, boring and wire cutting. Generally speaking, round parts are lathe parts, and other shapes are usually processed by milling machines.

2. Lathe parts usually have tolerances such as concentricity and perpendicularity; the best processing method is to leave a margin of about 0.1-0.2 when machining on a Dongguan lathe, and then use cylindrical grinding for grinding, the accuracy will be higher. The appearance is also very beautiful.

3. Milling machine parts usually have tolerances such as parallelism, flatness and perpendicularity. Generally, in high-precision machining, there will be a margin of about 0.05-0.08 when milling, and then use a surface grinder for grinding to ensure accuracy and smoothness. Claim.