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What is the machining process of non-standard parts

2018-07-13 Administrator home station clicks:

In the machining process of non-standard parts, the foundation is the most important, and so is the machining of precision parts. The editor of zhiyu precision parts processing will talk about in detail.

For box parts, the main holes are generally used as rough machining plane, and then the plane is used as fine machining hole system. For shaft parts, generally the outer circle is the rough machining center hole, and then the center hole is the fine processing surface. If there are several fine benchmarks, the processing of the base and main surfaces should be arranged in accordance with the sequence of datum conversion and the principle of progressively improving machining accuracy.

For box, bracket and link work pieces, the plane should be processed before processing holes. Because of the flat profile and large area of the plane, machining the plane and then locating the holes on the plane can not only guarantee the stable and reliable positioning datum of the holes during processing, but also help to guarantee the position accuracy requirement between the holes 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 processing order of precision machinery parts, the rough machining of each surface should be arranged first, and semi-finishing and finishing should be arranged in order according to the need, and finishing and finishing should be arranged at last. In order to reduce the influence of the deformation caused by rough machining on the precision of the workpiece with high precision, the 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 of non-standard parts is: the work in the front must be ready for the work in the back, laying the foundation and providing services. The specific working principles of non-standard parts processing can be divided into four aspects:

The main surface of the part is generally the surface with high processing precision or surface quality requirements, and their processing quality has a great impact on the quality of the whole part, and the processing procedure is often more. Therefore, the processing of the main surface should be arranged first, and other surface processing should be arranged in the middle of them. Assembly base surface, working surface, etc. are usually considered as the main surface, while key slots, light holes for fastening and screw holes are considered as the secondary surface.