Today, I would like to add to you the general principle of precision parts processing, that is, the general principle of precision parts processing technology route, mainly from the following four points:

1. Benchmark first

That is to say, the base level should be processed first. In the process of mechanical processing, the appearance as the positioning reference should be processed first, so as to provide the precise reference for the subsequent process as soon as possible.

2. Dividing Processing Stages

The appearance with high quality requirement can be divided into three stages: roughing, semi-finishing and finishing. Mainly in order to ensure the quality of processing; conducive to the scientific application of equipment; easy to arrange the heat treatment process; and easy to find blank defects.

3. Face before face

For box, bracket and connecting rod parts, the plane should be machined first and then the hole should be machined. In this way, the hole can be positioned in the plane to ensure the accuracy of the position of the plane and the hole, and the processing of the hole on the plane is convenient.

4. Finishing

The finishing of main appearance, such as grinding, honing, finishing and rolling, should be placed at the end of the process line. The general principle of drawing up the processing route of precision parts and the formulation of the processing procedure of precision parts can be roughly divided into two parts. Firstly, the technological route of parts processing is drawn up, and then the size of each process, the equipment used and the technological equipment, the cutting specifications and the man-hour quota are determined.