Steps of precision CNC machining

Before precise CNC machining line, each processing method has its processing sequence. Our operators need to process according to their processing order, but they can’t process at will, which will have a certain impact on the processed products or quality problems. Precision machining is one of them. What is the sequence of CNC machining? For precision parts, machining must be based on the structure of the parts and the condition of the blank, as well as the requirements of positioning and clamping. The key point is that the rigidity of the workpiece is not damaged. There are the following points

1、 The familiar understanding of precision parts processing technology can be divided into several points

1. How to deal with the previous process will not affect the positioning and clamping of the next process. The middle cross section has a general fine parts processing process.
2. First stop the adding process of the inner cavity, and then stop the shape processing process.
3. It is better to use the same positioning, clamping method or the same tool to stop the process, so as to reduce the times of repeated positioning, tool change and the number of moving platens. Dongguan Machinery processing factory method.
4. In the multiple processes stopped in the same device, the process of destroying the workpiece stiffness should be arranged first.

2、 Tool concentration sequence method: the whole process is divided according to the tools used by precision machining manufacturers, and all parts on the parts can be completed by using the same tools. Other parts can be completed successfully by using other tools. This can reduce the number of tool change, shorten the dead time and reduce unnecessary positioning error.

3、 Sorting method of processing parts: for parts with a large number of processing contents, according to their structural characteristics, processing parts can be partially red, such as internal shape, shape, surface or plane. Common processing plane, positioning surface, after processing hole; first processing simple geometry, and then processing complex geometry; first processing low precision parts, and processing high precision parts.

ken.tang @ chengcg.com