数控原理VB圆弧接圆弧课程设计.pdf

四、调试分析 1.缩短型 2.伸长型 3.插入型 附录： 程序如下： Option Explicit Dim X0 As Single '圆弧三点坐标 Dim Y0 As Single Dim X1 As Single Dim Y1 As Single Dim X2 As Single Dim Y2 As Single Dim I1 As Single ' 两个圆心相对圆弧起点坐标 Dim J1 As Single Dim I2 As Single Dim J2 As Single Dim R1 As Single '两个圆弧半径 Dim R2 As Single Dim r As Single '刀具半径 Dim OX1 As Single '两圆心实际坐标 Dim OY1 As Single Dim OX2 As Single Dim OY2 As Single Dim Xx1 As Single Dim Yy1 As Single Dim Start1 As Single '第一段圆弧起始弧度 Dim End1 As Single '第一段圆弧结束弧度 Dim Start2 As Single '第二段圆弧起始弧度 Dim End2 As Single '第二段圆弧结束弧度 Const Pi = Private Sub Command1_Click() '清除 picturebox 控件中的内容 = 1 X0 = Val(Split, ",")(0)) '将文本框中的文本从逗号分离并转化成数值 Y0 = Val(Split, ",")(1)) X1 = Val(Split, ",")(0)) Y1 = Val(Split, ",")(1)) X2 = Val(Split, ",")(0)) Y2 = Val(Split, ",")(1)) I1 = Val '取圆心相对圆弧起点坐标 J1 = Val I2 = Val J2 = Val R1 = Sqr(I1 * I1 + J1 * J1) '计算第一段圆弧半径 If Not Then R1 = -R1 '通过确定顺圆逆圆判断半径符号 R2 = Sqr(I2 * I2 + J2 * J2) '计算第二段圆弧半径 If Not Then R2 = -R2 '通过确定顺圆逆圆判断半径符号 r = Val '取刀具半径 If Not Then r = -r '通过确定左刀补右刀补判断刀具半径符号 '=======================画动态坐标系====================== Dim t1 As Single '取出 X 最大值 Dim t2 As Single '取出 X 最小值 Dim t3 As Single '取出 Y 最大值 Dim t4 As Single '取出 Y 最小值 t1 = X0 t2 = X0 t3 = Y0 t4 = Y0 If t1 < X1 Then t1 = X1 '求坐标中最大值与最小值 If t1 < X2 Then t1 = X2 If t2 > X1 Then t2 = X1 If t2 > X2 Then t2 = X2 If t3 < Y1 Then t3 = Y1 If t3 < Y2 Then t3 = Y2 If t4 > Y1 Then t4 = Y1 If t4 > Y2 Then t4 = Y2 If t1 < t3 Then t1 = t3 If t2 > t4 Then t2 = t4 Dim m As Single If Abs(R1) < Abs(R2) Then m = Abs(R2) Else m = Abs(R1) End If t1 = t1 + Abs(r) + m '坐标轴对圆弧和刀补轨迹留有余量 t2 = t2 - Abs(r) - m (t2, t1)-(t1, t2) '设定 picturebox 左上角右下角坐标值 (t2, 0)-(t1, 0), vbRed '画 X 轴 (0, t2)-(0, t1), vbRed '画 Y 轴 Dim I As Integer Dim Ts1 As Integer Dim Ts2 As Integer Ts1 = Fix(t2) Ts2 = Fix(t1) For I = Ts1 To Ts2 Step 1 (I, -(I, , vbRed '画 X 轴竖线 = I '打印刻度