In order to improve the processing efficiency during roughing and finishing, the tool with larger diameter is generally used for machining. Therefore, there is a large margin in the roughing after machining. The local shape of the part is not milled when finishing. Use partial milling. Because the cutting is smooth at the same level, the cutting can be smooth, and the spiral, broken line, S-line or fixed-point pre-drilling method can be used between the layers. Therefore, the two tool paths are most commonly used during programming. It is also two ideal rough milling tool paths.
After the tool path is generated, the correctness of the program can be checked by 3D dynamic simulation, and the entire machining process can be visually observed. The tool location data file is generated after the determination is made correctly. The tool location data file is the data and information of the part machining tool path generated by the CAM software. The tool position data file generated by CAM cannot drive the CNC machine tool. It must process the tool position data file according to the system selection of the machine tool or edit the post-processing file to generate the NC file that matches the machine tool.
Programs generated by automatic programming generally have a very large amount of information, and it is impossible to input them manually. Usually, a method in which a PC and a machine tool communicate directly is used. There are two methods of transmission. The first one is to input the program into the machine memory through the communication interface, and the machine tool is transferred into the program in the memory for processing. The second method is to process the PC and the machine tool while using the transmission. It can be seen that to become an excellent CNC programmer, you must be familiar with the operation performance of various machine tools, master manual programming, part processing technology, material properties of parts and cutting amount of various tools, etc., and must be able to use CAD/CAM with ease. software. (Finish)
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