We know that Kunshan mechanical processing has high requirements for precision. Precise mechanical processing has good rigidity, high manufacturing precision and accurate tool setting, so it can process parts with high precision requirements. It is impossible to finish all the machining contents of all surfaces in one process for precision parts processing. The whole processing process of precision parts processing can be divided into the following stages:
(1) Rough machining stage. Cut off most of the machining allowance of each machining surface and machine the precision datum, mainly considering to improve the productivity as much as possible.
(2) Semi finishing stage. The possible defects after rough machining shall be removed to prepare for the finish machining of the surface. It is required to achieve a certain machining accuracy, ensure a proper finish machining allowance, and complete the machining of the secondary surface.
(3) Finishing stage. In this stage, large cutting speed, small feed rate and cutting depth are used to cut off the finishing allowance left by the previous process, so that the part surface can meet the technical requirements of the drawing.
(4) Finishing stage. It is mainly used to reduce the surface roughness value or strengthen the machined surface. It is mainly used for high surface roughness requirements (ra ≤ 0.32 μ m) Surface finish.
(5) Ultra precision machining stage. The machining accuracy is 0.1-0.01 μ m. Surface roughness value ra ≤ 0.001 μ M processing stage. The main processing methods are: precision cutting, precision mirror grinding, precision grinding and polishing.
