In full-function CNC machine tools, the CNC system has the tool compensation function, which can be programmed according to the workpiece contour size. After the tool compensation is established and the tool compensation is executed, the CNC system automatically calculates the tool position and automatically adjusts the tool path to the tool path. Directly use the workpiece size preparation of processing procedures, tool wear, change the processing procedures unchanged, so the use of simple and convenient.
Economical CNC machine tools are simple in structure and low in price, and have a certain amount of possession in manufacturing enterprises. In economical CNC machine tool system, if there is no tool compensation function, the machining program can only be programmed according to the locus of the locus of the tool. This requires that the locus size of the tool locus should be calculated according to the workpiece contour size and tool diameter. Therefore, the calculation is large and complex, and the tool wear and tear, replace the need to recalculate the tool path locus size, re-programmed processing.

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