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標題:
基于autocad的齒輪參數化源程序
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作者:
圣歌
時間:
2011-5-25 11:34
標題:
基于autocad的齒輪參數化源程序
Imports System.Math
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Public Class Form1
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Dim AcadApp As AutoCAD.AcadApplication
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Dim 刀具 As Object
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Dim Da, D0, D1, D2, D3, D4, n1, B, C As Double
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Dim Z, m, Af As Double
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Const Pi = 3.141592
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Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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Me.Text = "齒輪結構參數化三維造型"
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Me.GroupBox1.Text = ""
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Me.Label1.Text = "齒數Z"
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Me.Label2.Text = "模數m"
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Me.Label3.Text = "壓力角Af"
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Me.Label4.Text = "軸徑D4"
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Me.Label5.Text = "齒寬B"
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Me.Label6.Text = "D0"
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Me.Label7.Text = "D3"
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Me.TextBox1.Text = 40
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Me.TextBox2.Text = 6
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Me.TextBox3.Text = 20
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Me.TextBox4.Text = CInt(Val(Me.TextBox1.Text) * Val(Me.TextBox2.Text) * 0.3)
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D4 = Val(Me.TextBox4.Text)
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Me.TextBox5.Text = CInt(1.2 * Val(Me.TextBox4.Text))
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Da = Val(Me.TextBox1.Text) * Val(Me.TextBox2.Text) + 2 * Val(Me.TextBox2.Text)
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Me.TextBox6.Text = Da - 12 * Val(Me.TextBox2.Text)
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Me.TextBox7.Text = 1.6 * D4
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Me.CheckBox1.Text = "畫腹板孔"
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Me.CheckBox1.Checked = True
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Me.Button1.Text = "齒輪結構造型"
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Me.Button2.Text = "結束"
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End Sub
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Sub 連接AutoCAD()
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On Error Resume Next
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AcadApp = GetObject(, "AutoCAD.Application")
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If Err.Number Then
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Err.Clear()
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AcadApp = CreateObject("AutoCAD.Application")
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If Err.Number Then
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MsgBox("不能運行AutoCAD,請檢查是否安裝了AutoCAD")
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Exit Sub
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End If
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End If
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AcadApp.Visible = True '界面可視
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AcadApp.WindowState = AutoCAD.AcWindowState.acMax '界面最大化
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AppActivate(AcadApp.Caption) '顯示AutoCAD界面
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End Sub
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Sub 齒輪刀具()
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Dim R, Rf, Rb, Ra As Single
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R = m * Z / 2
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Rf = (R - 1.25 * m)
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Rb = R * Cos(Af)
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Ra = R + m
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Dim Sb, th(3)
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Sb = Cos(Af) * (3.14 * m / 2 + m * Z * (Tan(Af) - (Af)))
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th(1) = (3.14 * m * Cos(Af) - Sb) / (2 * Rb)
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th(0) = th(1) / 3
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th(2) = th(1) + Tan(Af) - Af
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th(3) = th(1) + Tan(Acos(Rb / Ra)) - Acos(Rb / Ra)
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Dim curves(5) As AutoCAD.AcadEntity
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Dim points0(5) As Double
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Dim points1(8) As Double
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Dim points2(5) As Double
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points0(0) = 0 : points0(1) = Rf
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points0(2) = Rf * Sin(th(0)) : points0(3) = Rf * Cos(th(0))
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points0(4) = Rb * Sin(th(1)) : points0(5) = Rb * Cos(th(1))
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Dim startTan(2) As Double
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Dim endTan(2) As Double
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startTan(0) = 0 : startTan(1) = 0 : startTan(2) = 0
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endTan(0) = 0.5 : endTan(1) = 0.5 : endTan(2) = 0
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points1(0) = points0(4) : points1(1) = points0(5) : points1(2) = 0
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points1(3) = R * Sin(th(2)) : points1(4) = R * Cos(th(2)) : points1(5) = 0
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points1(6) = Ra * Sin(th(3)) : points1(7) = Ra * Cos(th(3)) : points1(8) = 0
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points2(0) = points1(6) : points2(1) = points1(7)
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points2(2) = points1(6) : points2(3) = points1(7) + 2.25 * m
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points2(4) = 0 : points2(5) = points2(3)
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If Rb < Rf Then
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points0(2) = points1(3) * 0.2 : points0(3) = points0(1) + 0.25 * m * 0.03
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points0(4) = points1(3) * 0.7 : points0(5) = points0(1) + 0.25 * m * 0.8
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points1(0) = points0(4) : points1(1) = points0(5) : points1(2) = 0
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End If
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curves(0) = AcadApp.ActiveDocument.ModelSpace.AddLightWeightPolyline(points0)
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curves(0).SetBulge(1, 0.2)
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curves(1) = AcadApp.ActiveDocument.ModelSpace.AddSpline(points1, startTan, endTan)
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curves(2) = AcadApp.ActiveDocument.ModelSpace.AddLightWeightPolyline(points2)
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Dim point1(2) As Double
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Dim point2(2) As Double
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point1(0) = 0 : point1(1) = 0 : point1(2) = 0
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point2(0) = 0 : point2(1) = 1 : point2(2) = 0
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curves(3) = curves(2).Mirror(point1, point2)
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curves(4) = curves(1).Mirror(point1, point2)
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curves(5) = curves(0).Mirror(point1, point2)
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刀具 = AcadApp.ActiveDocument.ModelSpace.AddRegion(curves)
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Dim taperAngle As Double
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taperAngle = 0
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Dim solidObj As AutoCAD.Acad3DSolid
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solidObj = AcadApp.ActiveDocument.ModelSpace.AddExtrudedSolid(刀具(0), B * 1.1, taperAngle)
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Dim center(2) As Double
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center(0) = 0 : center(1) = solidObj.Centroid(1) : center(2) = 0
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solidObj.Move(solidObj.Centroid, center)
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Dim basePnt(2) As Double
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basePnt(0) = 0 : basePnt(1) = 0 : basePnt(2) = 0.0#
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刀具 = solidObj.ArrayPolar(Z + 1, 2 * Pi, basePnt)
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End Sub
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Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged, TextBox2.TextChanged
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Me.TextBox4.Text = CInt(Val(Me.TextBox1.Text) * Val(Me.TextBox2.Text) * 0.3)
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D4 = Val(Me.TextBox4.Text)
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Me.TextBox5.Text = CInt(1.2 * Val(Me.TextBox4.Text))
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Da = Val(Me.TextBox1.Text) * Val(Me.TextBox2.Text) + 2 * Val(Me.TextBox2.Text)
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Me.TextBox6.Text = Da - 12 * Val(Me.TextBox2.Text)
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Me.TextBox7.Text = 1.6 * D4
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End Sub
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Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
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Call 連接AutoCAD()
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Dim entry As AutoCAD.AcadEntity
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For Each entry In AcadApp.ActiveDocument.ModelSpace
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entry.Delete()
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