Do you know what the sequence of precision parts processing is when the technology creates a process card when obtaining a workpiece?

For the processing industry, sequence is very important as it relates to product quality assurance. If a sequence is incorrect, it can easily cause significant losses. If it is serious, it is necessary to start over again. It is a bit serious that these products are scrapped, and precision parts processing is one of them. So what is the sequence?

1、 The arrangement of the machining sequence for precision parts should be based on the structure and condition of the parts, as well as the need for positioning and clamping, with the focus on ensuring that the rigidity of the workpiece is not damaged.

(1) The processing of the previous process should not affect the positioning and clamping of the next process, and if there are general precision parts processing processes interspersed in the middle, comprehensive consideration should also be given.

(2) First, proceed with the machining process of the inner shape and cavity, and then proceed with the contour machining process.

(3) Connect with the same positioning, clamping method or machining process with the same knife to reduce the number of repeated positioning, tool replacement, and moving of the pressure plate.

(4) Multiple processes carried out in the same installation should first be arranged to minimize the rigid damage to the workpiece.

2、 The centralized tool sorting method is to divide the processes according to the tools used, and use the same tool to process all the parts that can be completed. Using the second and third knives to complete other parts that they can complete. This can reduce the number of tool changes, compress the idle time, and reduce unnecessary positioning errors.

3、 For parts with a lot of processing content, the processing part can be divided into several parts according to its structural characteristics, such as internal shape, external shape, curved surface or plane, using the sorting method of processing parts.

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

First process simple geometric shapes, then process complex geometric shapes;

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

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