Basic requirements for processing technology of precision mechanical parts

In the process of design, the processing of precision mechanical parts must not only meet the requirements of its use, that is, have the ability to perform the required work, but also meet the production requirements in the process of operation. In the process of designing, it is easy to process and the processing cost is very low. Such parts will be called good craftsmanship to a certain extent.

Basic requirements for machining technology of Changzhou mechanical parts;

1. In the process of selection of blanks, it is necessary to use its reasonable amount of mechanical manufacturing The blank preparation method of the raw material will directly use its profile, casting, forging, welding and stamping methods during operation. The selection of the blank during use is related to the specific production technical conditions. Generally, it depends on the production batch. As well as talent performance and processing possibilities.

2. The structure of precision mechanical parts processing is very simple in the process of design, and the most simple surfaces and combinations are mainly used in the operation. The number Z of machined surfaces and the machined area Z are small.

3. The cost of machining parts that require appropriate manufacturing accuracy and surface roughness for precision mechanical parts will increase with the improvement of their accuracy. In this case, such an increase is extremely significant, and therefore, high accuracy should not be pursued without sufficient grounds. Similarly, the surface roughness of the parts should also be properly specified according to the actual needs of the mating surface.

4. To a certain extent, when precision mechanical parts are processed, they can design parts with good craftsmanship. In the process of designing, they must be combined with process technicians and be good at learning from them. In addition, Some basic knowledge about craftsmanship is also provided in metal craftsmanship courses and manuals for reference.

The surface roughness of precision mechanical parts can effectively reflect the error of the micro-geometry of the parts surface to a certain extent. The main basis for quality.

Operation steps of precision machining:

1. Finishing: This processing principle is roughly some grinding and polishing processing, which is usually a step after the product is completely completed. .

2. Face first and then hole: when making precision mechanical parts, for workpieces such as brackets, it needs both plane processing and mechanical hole processing, in order to machine the accuracy error of the hole If it is smaller, machining the plane first and then machining the hole is beneficial to reduce the error.

3. Divide the processing stage: when the product is in the precision mechanical parts, it needs to be processed in different degrees according to different product requirements, and the processing degree needs to be divided. If the precision requirements are not high, then a simple the roughing stage. The schedule requirements of the products are becoming more and more strict, and the semi-finishing and finishing stages will be carried out later.

4. Benchmark first: When using mechanical equipment to process products, a reference plane must be determined, so that there can be a positioning reference in subsequent processing. After determining the reference plane, then Machining the base surface first. In precision mechanical parts, there are many workpieces that are not produced at one time, but when the workpiece is produced, it is just a rough model.