CNC machining center is a kind of machine tool with strong kinetic energy. It has the advantages of strong adaptability, high precision, stable quality and high efficiency.
It integrates electronic computers, automatic control, servo drives, precision measurements and new mechanical structures. The technical achievements can effectively solve the process problems of small batches and complex shapes.
However, it is easy for novices to master some technical problems easily, which leads to malfunctions caused by incorrect execution. Such as,
In the processing program, G00 and G01 can both define the linear motion of the tool, but their functions are quite different, which is easy for beginners to confuse. The feedrate of work-forward commands (G01, G02, G03, etc.) is determined by the F command in the program; the feedrate of fast-forward commands (G00 and part of the zero return command) is not specified in the machining program, but when the machine parameters are set It is stored in the CNC system as machine parameters. The work advance instruction must not only ensure the accuracy of the processing end point, but also ensure the accuracy of the processing path and feed rate. This is achieved by microscopic interpolation calculation and dynamic control. The purpose of fast forward instructions is to minimize the idle travel time. When multi-axis linkage, the motion trajectory is unpredictable. Therefore, fast forward instructions cannot be used for processing feed.
High repeat positioning accuracy does not mean high parts machining accuracy. Positioning accuracy is the main indicator that determines the machining accuracy of parts. Repeated positioning accuracy reflects the ability of the machine tool to return to the same position multiple times. Positioning accuracy refers to the ability to accurately move a specified distance on the full stroke of the machine tool.
