Processing sequence of Ningbo precision casting

When you get the work piece, the process will list the processing procedures when making the process procedure card. Then do you know what the processing order of precision casting is?

In the processing industry, the order is very important, related to product quality assurance. If the order is wrong, it can easily cause a lot of damage. If it's serious, you have to start all over again. It's a little serious. It's that these products will be scrapped, and precision parts processing is one of them.

First, the arrangement of precision casting processing order should be considered according to the structure and blank condition of casting parts, as well as the need for positioning and clamping. The key is that the rigidity of the workpiece is not destroyed.

• The processing of the previous process can not affect the positioning clamping of the next process, and the processing process of the general precision parts inserted into it should also be considered comprehensively.

• advanced row cavity adding process, and then shape processing process.

• it is best to use the same positioning clamping method or the same tool processing technology connection, in order to reduce the number of repeated positioning, knife change and moving platen.

• For the multiple processes in the same installation, the process of small rigid damage to the workpiece should be arranged first.

Second, the tool set sequencing method is based on the tool used to divide the process, processing all parts can be completed with the same tool. Use the second and third cuts to complete the rest of what they can. This can reduce the number of tool changes, shorten idle time, reduce unnecessary positioning errors.

Machined parts can be divided into several parts according to their structural characteristics, such as internal shape, external shape, curved surface or plane.

Generally, the plane and positioning surface are processed first, and then the hole is processed.

Process simple geometric shapes first, and then process complex geometric shapes;

Process the parts with lower accuracy first, and then process the parts with higher accuracy requirements.

Process the parts with lower accuracy first, and then process the parts with higher accuracy requirements. How to arrange the machining sequence of precision parts?

Welcome to inquire.