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Precision mechanical parts machining process
Release time: 2023-11-13
We know that precision machining is a very high requirement for accuracy, precision machining of good rigidity, high manufacturing accuracy, accurate tool setting, so it can process parts with high accuracy requirements. Precision parts machining is not possible in a process to complete all the surface of the entire processing content, precision parts machining of the entire machining process can be divided into the following stages:
(1) Rough machining stage. Cutting most of the machining allowance of each machining surface, and machining of the fine reference, the main consideration as large as possible to improve productivity.
(2) Semi-finishing stage. Cutting out defects that may arise after rough machining, to prepare the surface for finishing, required to achieve a certain degree of machining accuracy, to ensure that the appropriate amount of machining allowance, while completing the processing of secondary surfaces.
(3) Finishing stage. In this stage using a large cutting speed, small feed and depth of cut, removal of the finishing allowance left by the previous process, so that the surface of the parts to meet the technical requirements of the drawing.
(4) Finishing stage. Mainly used to reduce the surface roughness value or strengthen the machined surface, mainly for surface roughness requirements are very high (ra ≤ 0.32 μm) surface processing.
(5) Ultra-precision machining stage. Processing accuracy of 0.1-0.01 μm, surface roughness value ra ≤ 0.001 μm processing stage. The main processing methods are: precision cutting, fine mirror grinding, precision grinding and polishing.
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