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CNC machining process is a kind of machining, and it also obeys the law of machining and cutting, which is roughly the same as that of ordinary machine tools. Because it is a kind of automated processing that applies computer control technology to mechanical processing, it has the characteristics of high processing efficiency and high precision. The processing technology has its own unique features, the process is more complicated, and the work step arrangement is more detailed and thorough.
The CNC machining process includes the selection of cutting tools, the determination of cutting parameters and the design of cutting process routes. CNC machining technology is the foundation and core of CNC programming. Only with reasonable technology can we compile high-efficiency and high-quality CNC programs. The criteria for measuring the quality of a CNC program are: the smallest processing time, the smallest tool loss and the best results.
The CNC machining process is a part of the overall processing technology of the workpiece, even a process. It must cooperate with other front and back processes to finally meet the assembly requirements of the overall machine or mold, so that qualified parts can be processed.
The CNC machining process is generally divided into rough machining, medium and rough corner clearing, semi-finishing and finishing. For rough machining, choose a larger tool as much as possible, and quickly remove a large amount of workpiece material with a larger cutting amount as much as possible within the power of the machine tool or the range that the tool can withstand. In order to prevent the workpiece from loosening due to the cutting vibration during roughing, the meter should be calibrated and checked in time after roughing, and the tool should be re-calibrated if necessary. After roughing, finish machining of the datum surface can be done to prepare for the calibration and inspection in the future. For workpieces with complex cavities, large tools are used for roughing, leaving a large amount of margin at the corners, and a smaller tool must be used for second roughing or corner cleaning. If the machining area is relatively large, semi-finishing can be performed in order to reduce tool loss. All the above steps must be left in order to prevent over-cutting
