What is the process of mechanical processing of non-standard parts
In the process of non-standard parts machining, foundation is important, and the same goes for precision mechanical parts machining. It is always necessary to first machine the precision reference, and then use the precision reference to locate and machine other surfaces. Next, let's go into detail about me.
For box parts, the main hole is generally used as the rough reference for machining the plane, and then the plane is used as the fine reference for machining the hole system; For shaft parts, the center hole is generally machined with the outer circle as the coarse reference, and then the outer circle, end face, and other surfaces are machined with the center hole as the fine reference. If there are several precision benchmarks, the machining of the base and main surfaces should be arranged according to the order of benchmark conversion and the principle of gradually improving machining accuracy.
For workpieces such as boxes, brackets, and connecting rods, flat surfaces should be machined first and then holes should be machined. Because the contour of the plane is flat and the area is large, machining the plane first and then positioning the hole with the plane can ensure a stable and reliable positioning reference for the hole during machining, and also help to ensure the positional accuracy requirements between the hole and the plane.
Non standard precision mechanical parts
A component is usually composed of multiple surfaces, and the processing of each surface generally needs to be carried out in stages. When arranging the processing sequence of precision mechanical components, rough machining of each surface should be arranged first, followed by semi precision machining as needed, and then precision machining and finishing machining should be arranged. For workpieces with high precision requirements, in order to reduce the impact of deformation caused by rough machining on precision machining, rough and precision machining should not be carried out continuously, but should be carried out in stages and at appropriate intervals.
The general principle for arranging the machining and cutting process of non-standard parts is that the previous work needs to prepare for the subsequent work, lay a solid 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 machining accuracy or surface quality requirements. The quality of their machining has a significant impact on the overall quality of the part, and there are often many machining processes involved. Therefore, the machining of the main surfaces should be arranged first, and other surface machining should be appropriately arranged to be interspersed between them. Assembly surfaces, working surfaces, etc. are usually considered as the main surfaces, while key slots, fastening holes, and screw holes are considered as secondary surfaces.
