What are the principles to be followed for precision parts processing?

1, the benchmark first: that is, the first processing datum, parts in the machining process, as the positioning basis of the surface should be first processed out, in order to provide a fine benchmark for the processing of subsequent processes as soon as possible.
2, divided processing stage: machining quality requirements of high appearance, are divided into processing stages, generally can be divided into rough processing, semi-finishing and finishing three stages. Mainly to ensure the quality of processing; Equipment conducive to scientific application; Easy to arrange heat treatment process; It is also convenient to find blank defects.
3, the first surface after the hole: for the box, bracket and connecting rod and other parts should be processed before the plane processing holes. In this way, the hole can be machined in a plane position, ensuring the position accuracy of the plane and the hole, and bringing convenience to the processing of the hole on the plane.
4, finishing processing: the main appearance of finishing processing, such as grinding, honing, fine grinding, rolling processing, etc., should be placed at the end of the process route stage. The general principles of the precision parts processing process route and the formulation of the precision parts processing process regulations can be roughly divided into two links.
The first is to formulate the process route of parts processing, and then determine the process size of each process, the equipment and process equipment used, as well as cutting specifications, working hour quotas, etc.