The allocation of CNC machining must be considered based on the structural characteristics of the parts and the needs of their positioning and clamping. The key is that the stiffness of the parts is not easily destroyed.
1. The processing of the first process should not affect the positioning and clamping of the next process, and it should also be considered if there are general high-precision parts processing processes intersecting in the middle.
2. It is proposed to carry out the internal processing process first, followed by the external processing process.
3. According to the same positioning and clamping methods or consistent tool processing procedures, continuous processing can reduce the frequency of repeated positioning and tool replacement, and move the pin frequently, which can effectively prevent deviation and improve processing efficiency
4. The multiple processes in installation should be assigned first to the process that causes less damage to the stiffness of the parts
The centralized and sequential method of cutting tools requires the process division of the required cutting tools for high-precision parts processing. Any parts that can be completed on the part must be processed with the same cutting tool, and then the remaining parts that can be completed with the second and third cutting tools can be used to effectively reduce the tool change interval, reduce the empty process interval, and reduce unnecessary positioning deviation Sort by processing location. For products with a large amount of processing content, CNC machining can be divided into many parts according to their structural characteristics, such as internal shape, appearance, inclined plane, or floor plan. Generally, the plane and positioning surface are processed first, and then the hole is processed. A simple geometric shape is given first, and then the complex geometric shape is processed. The parts with excellent positioning are lower, and then the parts with higher positioning regulations are processed.