The clamping of the workpiece must be safe and reliable, and coaxial with the center of the machine tool. The outer circle and end face of the workpiece can be processed, and at least the positioning surface must be turned out.
Clean the appearance and dead corners of the machine tool, remove and wash the covers, and ensure that the inside and outside are clean, free of rust and yellow robe, and that the paint can see the natural color of iron and light. Clean the guide rail surface and remove the burrs on the worktable. Check and supplement the screws, handball and hand board, and check the flexibility and reliability of each handle.