1. Check if the grinding wheel of the CNC cylindrical grinder is loose or cracked, if the protective cover is sturdy and reliable, and if the electrical switch is functioning properly<2. The operator should master the characteristics, specifications, functions, and operating steps of each joystick of the tool grinder; After inspection, fill out the record card<3. According to the grinding wheel manual, select a grinding wheel that matches the spindle speed of the machine tool in the plan view<4. When clamping and grinding workpieces, carefully check whether the clamping of the workpiece is appropriate and sturdy; When loading and unloading workpieces, the grinding wheel should be retracted and raised to a certain reliable position to avoid hand grinding