Numerical control skill of numerical control lathe, referred to as numerical control, refers to the skill of using the method of digital control to automatically control the completion of a certain course schedule. It usually controls the direction, viewpoint, speed and other mechanical quantities and the switch quantities related to the flow direction of mechanical energy. The origin of CNC lathe is the origin of machine coordinate system. For a specific machine tool, the origin of the machine tool is constant, which is a physical orientation of the machine tool manufacturer on the machine tool.
The key mission of NC lathe process planning is to determine the detailed processing content, cutting amount, process equipment, positioning device method and tool moving track of the process, so as to prepare for the programming.
The setting of the machining path of CNC lathe is a very important link. The machining path is the moving path of the cutter point related to the workpiece in the machining progress. It not only includes the content of the machining process, but also reflects the organization of the machining sequence. Therefore, the machining path is an important evidence for the preparation of the machining program.
The processing route shall ensure the accuracy and appearance roughness of the workpiece to be processed. Planning the processing route should reduce the time of empty travel and improve the processing power. Simplify the numerical calculation and reduce the program section, and reduce the programming workload. According to the form of workpiece, rigidity, machining allowance and rigidity of machine tool system, the number of cycle machining can be determined.
Correct selection of the down milling or reverse milling method in milling. Generally speaking, CNC lathe uses ball screw, so the leisure time is very small, so the advantages of forward milling are more than reverse milling. CNC lathe machining in CNC lathe has not yet reached the conditions of universal application, usually we should put too much allowance on the blank, the unique is that the allowance structure containing forging and casting hard skin layer is processed on the ordinary lathe. If must use numerical control lathe processing, must pay attention to the vivid organization of the program.
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