The general principles of precision parts processing, that is, the general principles of precision parts processing process route, mainly from the following four points to elaborate.
1, the benchmark first
That is, first processing the reference surface, parts in the machining process, as the appearance of the positioning reference should be processed first, in order to provide a fine reference for the subsequent processes as soon as possible.
2, divide the processing stage
Mechanical processing quality requirements of the appearance, are divided into processing stages, generally can be divided into roughing, semi-finishing and finishing three stages. Mainly to ensure the quality of processing; conducive to the scientific application of equipment; to facilitate the arrangement of heat treatment processes; and to facilitate the discovery of defects in the blank.
3、First surface and then hole
For the box, bracket and connecting rod and other parts should be machined plane first and then hole. This can be positioned with the plane to process the hole, to ensure the accuracy of the position of the plane and hole, and to bring convenience to the processing of the hole on the plane.
4、Light finishing processing
The main appearance of the finishing process, such as grinding, honing, fine grinding, rolling processing, etc., should be placed at the end of the process route stage. The development of precision parts machining process route general principles, precision parts machining process procedures, can be broadly divided into two links. First of all, 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, work quotas.
