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为了简化零件数控编程,使数控程序与刀具尺寸无关,在数控系统中必须具备刀具长度与刀具半径补偿机能。在目前流行的数控系统中,刀具补偿一般包括刀具长度补偿和刀具半径补偿。前者可使刀具垂直于走刀平面(比如XY平面,由G17指定)偏移一个刀具长度修正值;后者可使刀具在走刀平面
In order to simplify the part NC programming, the NC program has nothing to do with the tool size, the CNC system must have the tool length and tool radius compensation function. In the popular CNC system, tool compensation generally includes tool length compensation and tool radius compensation. The former allows the tool to be offset perpendicular to the plane of travel (such as the XY plane, as specified by G17) by a tool length correction; the latter allows the tool to move in the pass plane