利用VB程序实现数控系统的刀具半径补偿功能仿真模拟。包括直线对直线，直线对圆弧，圆弧对直线，圆弧对圆弧的实现。-Using VB program numerical control system simulation tool radius compensation. Include lines of straight line with the arc, the arc of the straight line, arc of the arc is achieved.