What Industry Are Non Standard Precision Parts Generally Used In

[Voltz Valencia]

non standard precision parts generally refer to asprecisionparts.com/types-of-milling-operation/ bearings, ball screws, linear guides, ball bushings, etc. It is usually used in industrial automation equipment. Especially on semiconductor equipment, SMT surface sealing equipment, testing equipment and machine tools.

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in the machining process of non-standard parts, the foundation is the most important. The same is true for the machining of precision mechanical parts. Always machining the precision datum first, and then positioning and machining other surfaces with the precision datum
for box parts, generally, the main hole is used as the rough datum to process the plane, and then the plane is used as the fine datum to process the hole system; For shaft parts, the outer circle is generally used as the rough datum to process the central hole, and then the outer circle, end face and other surfaces are processed with the central hole as the fine datum. If there are several fine datums, the machining of base surface and main surface shall be arranged according to the sequence of datum conversion and the principle of gradually improving machining accuracy
for workpieces such as box, support and connecting rod, the plane shall be machined first and then the hole shall be machined. Because the contour of the plane is flat and the area is large, the plane is processed first, and then the hole is positioned and processed with the plane, which can not only ensure that the hole has a stable and reliable positioning reference during processing, but also help to ensure the position accuracy requirements between the hole and the plane
a part is usually composed of multiple surfaces, and the processing of each surface generally needs to be carried out in stages. When arranging the machining sequence of precision mechanical parts, the rough machining of each surface shall be arranged first, the semi finish machining shall be arranged in the middle according to the needs, and finally the finish machining and finishing machining shall be arranged. For workpieces with high precision requirements, in order to reduce the impact of deformation caused by rough machining on finish machining, generally, rough and finish machining should not be carried out continuously, but should be carried out in stages and at appropriate intervals
the general principle of machining and cutting process arrangement of non-standard parts is that the previous work must be prepared for the later work, lay a good foundation and provide good services. The specific working principles of non-standard parts processing can be divided into four aspects:

the main surfaces of parts are generally surfaces with high processing accuracy or surface quality requirements. Their processing quality has a great impact on the quality of the whole part, and there are often many processing procedures. Therefore, the processing of main surfaces should be arranged first, and then other surface processing should be properly arranged in between them. Generally, the assembly base surface and working surface are regarded as the main surface, while the keyway, smooth hole and screw hole for fastening are regarded as the secondary surface.