The process of precision parts processing has very strict requirements. If there is a little carelessness in processing, the workpiece error will exceed the tolerance range, so it needs to be reprocessed, or the blank will be scrapped, which greatly increases the production cost. Therefore, what are the requirements of precision parts processing, can help us improve production efficiency.
Secondly, equipment requirements, rough and finish machining should use different performance equipment. Because the rough machining process is to cut most parts of the blank, the workpiece will produce a lot of internal stress when the feed rate is large and the cutting depth is large, so the finish machining can not be carried out at this time. When the workpiece is finished after a certain period of time, it should work on the machine tool with high precision, so that the workpiece can achieve high precision.
Thirdly, the processing of precision parts often has the process of surface treatment and heat treatment, and the surface treatment should be put after precision machining. And in the process of precision machining, the thickness of thin layer after surface treatment should be considered. Heat treatment is to improve the cutting performance of metal, so it needs to be carried out before machining. These are the requirements of precision parts processing.
Dimension requirements, must strictly follow the shape and position tolerance requirements of the drawings for processing. Although the parts as like as two peas are actually not identical with the size of the drawings, the actual dimensions are all qualified products within the theoretical dimension tolerance, and are the parts that can be used.