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本文描述了数控车床微机图形数控编程ＧＮＣ（ＧｒａｐｈｉｃａｌＮｕｍｂｅｒｉｃａｌＣｏｎｔｒｏｌ）系统。分析了零件几何信息的输入及自动生成零件的几何图形，提出了一种非圆曲线的变间距直线逼近法，系统能进行动态模拟加工并自动生成数控车床的Ｇ／Ｍ代码。
This article describes the NC lathe computer graphics NC programming GNC (GraphicalNumbericalControl) system. The geometry information of the part is analyzed and the geometrical figure of the part is generated automatically. A non-circular curved line method with variable pitch is proposed. The system can process the dynamic simulation and automatically generate the G / M code of the CNC lathe.