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ＣＮＣ（计算机数字控制）机床图形编程中，刀具轨迹算法最为关键．本文针对二维轮廓零件的加工特点，利用图形编程理论，提出了一种ＣＮＣ机床加工中二维零件的刀具轨迹算法：根据刀具偏置方向确定刀心坐标点，再采用零圆弧等距法得到二维零件轮廓的等距线．这种算法通用性好，算法简单．
CNC (Computer Numerical Control) machine tool programming, tool path algorithm is the most critical. In this paper, according to the processing characteristics of two-dimensional profile parts, a tool path algorithm of two-dimensional parts in CNC machine tool machining is proposed by using the theory of graphics programming. The tool center coordinates are determined according to the tool offset direction, Obtain two-dimensional contour of the equidistant parts of the line. The generality of this algorithm is good, the algorithm is simple.