1. Precautions for CNC precision part processing
(1) When the workpiece is too high, it should be opened with a knife of different lengths. After the large knife is used to open it, it should be removed with a small knife.
(2) Use a flat -bottomed knife processing plane and use less balls in order to reduce processing time; if there is a slope, and it is an integer, use the oblique knife to process.
(3) Reasonably set the tolerance, so that the processing accuracy and the computer accounting moment are balanced with each other, make more processes, and reduce the time of empty knives.
(4) High hardness of the blank data, selection of reverse milling; low hardness of the blank data, selection of smooth milling. Rough processing reverse milling, refined processing smooth milling.
(5) The knife data is well -durable, and the hardness is habit of rough processing.
2. CNC processing process
(1) Selection of parts and fixture methods and fixtures
CNC machine tool processing methods of the processing parts of the processing parts must also be reasonably selected and placed on the positioning of the positioning and clamping plan. When selecting the essence, generally comply with the two standards of "benchmarking" and "benchmarking". In this guideline, we have to consider:
A. Try to complete all the appearance processing in a positioning and clamping. Therefore, the positioning method that is convenient for each appearance to be processed must be selected.
B. When the workpiece is installed at a time, it should be able to complete the processing of all the appearance of the workpiece.
C. When determining the placement of the workpiece on the operating platform, it should be considered that the impact of the length of the tools and the rigidity of the knife on the quality of the processing on the quality of the processing can be considered.
D. The fixture used in the control processing should be selected as assembled as possible, and the fixture that can be adjusted can be adjusted to shorten the production reserve cycle.
(2) Organization of processing sequence
When organizing the processing order, the basic criteria must be adhered to, including "first -time, then the holes", "rough and then refined", etc. In addition to these basic criteria, we should also follow the following standards as:
A. Processing of the knife will be collected to prevent repeated use of the same knife and reduce the number of knives and times.
b. The hole system with a high requirements of the same axis should be processed after the processing of the hole system is completed after a positioning. Coaxiality of the hole system.
