Process characteristics of CNC machining

        The CNC machining process is a kind of machining, and it also obeys the machining cutting rules, which is roughly the same as the machining process of ordinary machine tools. Because it is a kind of automatic processing that applies computer control technology to mechanical processing, it has the characteristics of high processing efficiency and high precision.

       The CNC machining process includes the selection of tools, the determination of cutting parameters, and the design of the process route of the machine tool. CNC machining technology is the foundation and core of CNC programming. Only with reasonable technology can high-efficiency and high-quality CNC programs be compiled. The criteria for measuring the quality of CNC programs are: the least processing time, the least tool loss and the workpiece with the best effect.

       The CNC machining process is part of the overall machining process of the workpiece, or even a process. It must cooperate with other front and rear processes to finally meet the assembly requirements of the overall machine or mold pair, so that qualified parts can be processed. The CNC machining process is generally divided into rough machining, medium and coarse corner cleaning machine finishing and other steps. For rough machining, try to use a larger knife, and use a large cutting amount to quickly remove a large amount of workpiece material within the range of machine power or the tool can bear. In order to prevent the workpiece from loosening due to cutting vibration during rough machining After that, the calibration table should be checked in time, and it is necessary to re-calibrate the knife. After roughing, the finishing smooth knife of the reference surface can be carried out to prepare for the future calibration check. For workpieces with loaded pockets, larger tools are used for roughing. To make a large amount of allowance at the corner, it is necessary to use a smaller pair of tools than the roughing tool for secondary roughing or corner cleaning. When the machining area is relatively large, semi-finishing can be performed in order to reduce tool wear. In the above steps, in order to prevent overcutting, it is necessary to leave enough allowance, and finally carry out the finishing process. Generally speaking, try to test it on the machine tool, and then remove it after passing the test, and prepare for the next piece of processing.