What is the order of precision machining?
What is the precision machining sequence? For the processing industry, the order is very important. It is related to the quality assurance of the product. If the order is wrong, it is easy to cause huge losses. If the product is scrapped, if it is serious, it will have to start all over again.
First of all, the arrangement of the precision machining sequence should be considered according to the structure of the part and the condition of the blank, as well as the need for positioning and clamping. The key point is that the rigidity of the workpiece will not be damaged.
(1) The processing of the previous process will not affect the positioning and clamping of the next process, and the general precision machining process should also be comprehensively considered to be interspersed in the middle.
(2) The inner cavity is processed first, and then the outer shape is processed.
(3) In order to reduce the number of repeated positioning, the number of tool changes and the number of moving platens, it is best to connect with the same positioning, clamping method or the same tool processing procedure.
(4) For multiple processes in the same installation process, the process with less rigid damage to the workpiece should be arranged first. Precision parts processing.
Second, the tool centralized classification method. It divides the process according to the tool used and uses the same tool to machine all parts on the part. Use the second and third knives to do whatever else they can. This reduces the number of tool changes, reduces vacancy time, and reduces unnecessary positioning errors.
Third, the sequential method of machining parts. For parts with more processing content, the processed parts can be divided into several parts according to their internal shape, appearance, curved surface or plane and other structural characteristics. Generally speaking, the plane and positioning surface are processed first, and then the hole is processed; the simple geometric shape is processed first, and then the complex geometric shape is processed; the parts with low precision are processed first, and then the parts with high precision are processed. The above is the processing sequence of precision parts.
