Five major processes of precision mechanical parts machining

　　Precision Machining of Mechanical Parts

　　Generally, this refers to the processing and production of components for precision mechanical equipment. This requires a very high degree of accuracy. Therefore, in addition to understanding the specific material requirements for precision mechanical part machining and the common techniques for machining precision mechanical parts, we should also understand the steps involved in the machining process of precision mechanical parts. Below, we share the five stages of precision mechanical part machining.

　　1. Rough Machining

　　The main consideration is to improve productivity. Most of the machining allowance on each machining surface is removed, and the precision datum is machined.

　　2. Semi-finishing

　　This mainly involves removing defects that may have occurred after rough machining, and simultaneously completing the machining of secondary surfaces. A certain machining accuracy must be achieved to prepare for the finishing stage and ensure an appropriate finishing allowance.

　　3. Finishing

　　In the finishing stage, high cutting speeds, small feed rates, and cutting depths are mainly used to remove the machining allowance left by semi-finishing, so that the surface of the precision mechanical parts meets the technical requirements of the drawings.

　　4. Surface Finishing

　　Mainly used to reduce surface roughness or strengthen the machined surface, mainly used for surface machining with very high surface roughness requirements.

　　5. Ultra-precision Machining

　　This mainly uses precision cutting, precision mirror grinding, precision grinding, and polishing methods to achieve a machining accuracy of 0.1-0.01μm for the workpiece, with a surface roughness value ra≤0.001μm.