1, marking: as the first process of parts processing, marking is closely related to the processing quality of parts. First of all, you should be familiar with the pattern, use the marking tool reasonably, and mark the machining boundary of the parts on the workpiece to be machined according to the marking steps as the basis for the installation or machining of the parts.

2. Chiseling technology: Chiseling is to cut and cut off the workpiece with tools such as chisel and hammer, which is one of the most basic operations of the fitter.

3. Filing technology: File, reshape and assemble the workpiece with files of various shapes, so that the workpiece can achieve higher precision and more accurate shape. It is also the most basic operation of locksmiths.

4. Sawing technology: Sawing is used to divide materials on the workpiece or saw out grooves that meet technical requirements.

5. Drilling, reaming, countersinking and reaming techniques: Drilling, reaming, countersinking and reaming are three methods used by locksmiths for rough machining, semi-finish machining and finish machining holes.

6. Tapping and thread sleeve technology: Tapping and thread sleeve is to process internal and external threads on the inner hole and outer cylindrical surface of the workpiece with a tap die.