In this era of more and more developed technology, precision machining has become an indispensable mechanical equipment for people in industry, but how much do you know about the process of precision machining? Next, follow Xiaobian to learn about it.
First, the surface after the hole
The box, bracket and connecting rod and other parts should be processed before the plane processing hole. In this way, the plane can be positioned to process the hole, to ensure the accuracy of the plane and the hole orientation, and to bring convenience to the processing of the hole on the plane.
Two, first processing datum
Parts in the process of processing, as the positioning of the appearance of the benchmark should be first processed out, in order to supply fine benchmark for the processing of the subsequent process as soon as possible. This is called "baseline first."
Three, finishing processing
The finishing processing of the primary appearance (such as grinding, honing, grinding, rolling, etc.) should be carried out in the final stage of the process road. The surface finish after processing is above Ra0.9um, and the slight knock will damage the appearance. In Japan, Germany and other countries, after finishing processing, flunnel cloth should be used for maintenance, and it is definitely prohibited to touch the workpiece directly with your hand or other objects. Avoid the appearance of finishing, which may be damaged by inter-process transfers and devices.
Four, distinguish the processing stage
Processing the appearance of high quality requirements, are divided into processing stages, generally can be divided into rough processing, semi-finishing and finishing three stages. The first is to ensure the quality of processing; Conducive to rational use of equipment; Easy to organize heat treatment process; And when it is convenient to find the blank shortcomings.
