機械原理大作業(yè)凸輪

1、Harbin Institute of Technology大作業(yè)設(shè)計說明書課程名稱： 機械原理 設(shè)計題目： 凸輪機構(gòu)設(shè)計(16) 院 系： 機電學(xué)院 班 級： 1008108班 設(shè) 計 者： 余天凱 學(xué) 號： 1100800102 指導(dǎo)教師： 陳照波、劉福利 設(shè)計時間： 2012.6.18 哈爾濱工業(yè)大學(xué)1.設(shè)計題目如下圖所示直動從動件盤形凸輪機構(gòu)，其原始參數(shù)見參數(shù)附表。根據(jù)給出參數(shù)設(shè)計該凸輪機構(gòu)。參數(shù)附表：升程（mm）升程運動角（°）升程運動規(guī)律升程許用壓力角（°）回程運動角（°）回程運動規(guī)律回程許用壓力角（°）遠(yuǎn)休止角（°）近休止角（&#

2、176;）10090等加等減速4080正弦加速度70901002.推桿運動規(guī)律2.1推桿運動規(guī)律令f為凸輪轉(zhuǎn)過的角度，w為凸輪轉(zhuǎn)動的角速度，h為推桿的升程定義： 為凸輪的升程運動角； 為凸輪的回程運動角； 為凸輪的遠(yuǎn)休止角； 為凸輪的近休止角因為推桿的升程運動規(guī)律為等加速等減速運動規(guī)律，回程運動規(guī)律為正弦加速度運動規(guī)律，因此可得出推桿升程與回程的運動方程：.凸輪推桿升程運動方程為：.凸輪推桿回程運動方程為:2.2推桿的位移、速度、加速度線圖依次如下：3. 圖像 3.1 圖像 3.2確定基圓半徑與偏距： 圖中斜率為正的直線與縱軸正方向的夾角為升程許用壓力角，未過原點的斜率為負(fù)的直線與縱軸正方向的

3、夾角為回程許用壓力角，過原點的直線與縱軸負(fù)方向的夾角為升程許用壓力角。最終三條直線下方的公共區(qū)域內(nèi)即可確定基圓半徑與偏距，為了盡可能得到合理的凸輪設(shè)計方案，因此確定偏距為20mm，S0為90mm，則基圓半徑r0為=92.195mm，確定基圓半徑與偏距的圖像如下圖示：三條線分別為推程許用壓力角、回程許用壓力角、推程起始點壓力角約束條件.4.確定滾子半徑以及凸輪輪廓的繪制：4.1 理論輪廓線的繪制理論輪廓線是把滾子中心視為尖頂從動件的尖頂，將滾子中心的運動規(guī)律當(dāng)作尖頂?shù)倪\動規(guī)律以此求得的尖頂從動件輪廓。理論輪廓線方程 4.2 滾子半徑的確定工作輪廓曲率半徑a、理論輪廓曲率半徑與滾子半徑r三者存在如

4、下關(guān)系a=+r此時工作輪廓曲率半徑恒大于理論輪廓曲率半徑，若滿足滾子半徑小于理論輪廓曲率半徑，便可得到凸輪的工作輪廓。取滾子半徑r=10mm4.3 實際輪廓線的繪制實際輪廓線為以理論輪廓線上各點為圓心，以滾子半徑為半徑的滾子圓族包絡(luò)線，本題中該凸輪的內(nèi)包絡(luò)線構(gòu)成工作輪廓線。 工作輪廓方程： 如下圖，理論輪廓為外圍的紅色輪廓線，實際輪廓為內(nèi)部的黑色輪廓線 如下圖，外圍最密集的為滾子軌跡，最內(nèi)部的黑色圓為偏距圓，藍(lán)色線為基圓5.Visual Basic程序代碼5.1推桿運動方程圖線Option Explicit '定義自變量Dim f As Double '角度Dim w As D

5、ouble '凸輪角速度Dim s As Double '推桿位移Dim v As Double '推桿速度Dim a As Double '推桿加速度Dim h As Double '升程Dim f1 As Double '升程運動角Dim f2 As Double '回程運動角Dim fs1 As Double '遠(yuǎn)休止角Dim fs2 As Double '近休止角Dim T As Double '回程中的TDim i As Double '遞增量Dim fj1 As Double '角度遞增

6、量Dim pi As Double '圓周率Dim pa As Double '角度弧度轉(zhuǎn)換Private Sub Form_Load() '賦值Form1.WindowState = 2BackColor = vbWhitepi = 4 * Atn(1)pa = pi / 180h = 100f1 = 90 * paf2 = 80 * pafs1 = 90 * pafs2 = 100 * paEnd SubPrivate Sub command1_click() '推桿位移曲線Set Picture1.Picture = Nothingw = Text1.Te

7、xtPicture1.Scale (-10, 200)-(380, -100)Picture1.Line (-10, 0)-(380, 0) 'XPicture1.Line (0, 1000)-(0, -100) 'YFor i = -30 To 390 Step 30 'X軸坐標(biāo)Picture1.DrawStyle = 2Picture1.Line (i, 1000)-(i, -100)Picture1.CurrentX = i - 10: Picture1.CurrentY = 0Picture1.Print iNext iFor i = -100 To 200 S

8、tep 20 'Y軸坐標(biāo)Picture1.DrawStyle = 2Picture1.Line (-100, i)-(380, i)Picture1.CurrentX = -10: Picture1.CurrentY = iPicture1.Print iNext iFor fj1 = 0 To 360 Step 0.01f = fj1 * paCall upCall upstayCall backCall backstayPicture1.PSet (fj1, s), vbRedNext fj1End SubPrivate Sub command2_click() '推桿位移

9、曲線Set Picture2.Picture = Nothingw = Text1.TextPicture2.Scale (-10, 140 * w)-(380, -150 * w)Picture2.Line (-10, 0)-(380, 0) 'XPicture2.Line (0, 140 * w)-(0, -150 * w) 'YFor i = -30 To 390 Step 30 'X軸坐標(biāo)Picture2.DrawStyle = 2Picture2.Line (i, 140 * w)-(i, -150 * w)Picture2.CurrentX = i - 10

10、: Picture2.CurrentY = 0Picture2.Print iNext iFor i = -150 * w To 140 * w Step 30 * w 'Y軸坐標(biāo)Picture2.DrawStyle = 2Picture2.Line (-10, i)-(380, i)Picture2.CurrentX = -10: Picture2.CurrentY = iPicture2.Print iNext iFor fj1 = 0 To 360 Step 0.01f = fj1 * paCall upCall upstayCall backCall backstayPictu

11、re2.PSet (fj1, v), vbRedNext fj1End SubPrivate Sub command3_click() '推桿位移曲線Set Picture3.Picture = Nothingw = Text1.TextPicture3.Scale (-10, 350 * w 2)-(380, -350 * w 2)Picture3.Line (-10, 0)-(380, 0) 'XPicture3.Line (0, 350 * w 2)-(0, -350 * w 2) 'YFor i = -30 To 390 Step 30 'X軸坐標(biāo)Pic

12、ture3.DrawStyle = 2Picture3.Line (i, 350 * w 2)-(i, -350 * w 2)Picture3.CurrentX = i - 10: Picture3.CurrentY = 0Picture3.Print iNext iFor i = -350 * w 2 To 350 * w 2 Step 50 * w 2 'Y軸坐標(biāo)Picture3.DrawStyle = 2Picture3.Line (-10, i)-(380, i)Picture3.CurrentX = -10: Picture3.CurrentY = iPicture3.Pri

13、nt iNext iFor fj1 = 0 To 360 Step 0.01f = fj1 * paCall upCall upstayCall backCall backstayPicture3.PSet (fj1, a), vbRedNext fj1End SubPrivate Sub up() '升程If 0 <= f And f <= (f1 / 2) Thens = 2 * h * (f / f1) 2v = (4 * h * w * f) / (f1 2)a = 4 * h * w * w / (f1 * f1)End IfIf (f1 / 2) < f

14、And f <= f1 Thens = h - (2 * h * (f1 - f) 2) / (f1 2)v = (4 * h * w * (f1 - f) / (f1 2)a = -4 * h * w * w / (f1 * f1)End IfEnd SubPrivate Sub upstay() '遠(yuǎn)休程If f1 < f And f <= f1 + fs1 Thens = hv = 0a = 0End IfEnd SubPrivate Sub back() '回程If f1 + fs1 < f And f <= f1 + fs1 + f2 T

15、henT = f - f1 - fs1s = h * (1 - T / f2 + (Sin(2 * pi * T / f2) / (2 * pi)v = -h * w * (1 - Cos(2 * pi * T / f2) / f2a = -2 * pi * h * w * w * Sin(2 * T * pi / f2) / (f2 * f2)End IfEnd SubPrivate Sub backstay() '近休程If f1 + fs1 + f2 < f And f < 2 * pi Thens = 0v = 0a = 0End IfEnd Sub5.2求ds/d

16、f-s曲線Option Explicit '定義自變量Dim h As Double '定義行程Dim w As Double '凸輪角速度Dim f As Double '定義凸輪轉(zhuǎn)角Dim fj1 As Double '角度遞增量Dim f0 As Double '定義升程運動角Dim fs As Double '定義遠(yuǎn)休止角Dim f01 As Double '定義回程運動角Dim fs1 As Double '定義近休止角Dim s As Double '定義從動件位移Dim pi As Double &#

17、39;定義圓周率Dim pa As Double '定義角度弧度轉(zhuǎn)換中間變量Dim T As Double '定義中間變量Dim i As Double '定義中間變量Dim dsdf As Double '定義ds/dfPrivate Sub Form_Load() '賦值Form1.WindowState = 2pi = 4 * Atn(1)pa = pi / 180h = 100w = 10f0 = 90 * pafs = 90 * paf01 = 80 * pafs1 = 100 * paEnd SubPrivate Sub Command1_C

18、lick()Set Picture1.Picture = NothingPicture1.Scale (-140, 110)-(140, -20) Picture1.Line (-140, 0)-(140, 0) 'X Picture1.CurrentX = 105: Picture1.CurrentY = -10 Picture1.Print "ds/d" Picture1.Line (0, 110)-(0, -20) 'Y Picture1.Print "s" For i = -140 To 140 Step 10 'X軸坐標(biāo)

19、 Picture1.Line (i, 2)-(i, 0) Picture1.CurrentX = i - 5: Picture1.CurrentY = 0 Picture1.Print i Next i For i = -20 To 110 Step 10 'Y軸坐標(biāo) Picture1.Line (0, i)-(2, i) Picture1.CurrentX = 0: Picture1.CurrentY = i + 5 Picture1.Print i Next iPicture1.DrawStyle = 2 For i = -100 To -10 Step 10 Picture1.L

20、ine (-140, i)-(140, i), vbBlack '橫向網(wǎng)格線 Next i For i = 10 To 110 Step 10 Picture1.Line (-140, i)-(140, i), vbBlack '橫向網(wǎng)格線 Next i For i = -140 To -10 Step 10 Picture1.Line (i, 110)-(i, -20), vbBlack '縱向網(wǎng)格線 Next i For i = 10 To 140 Step 10 Picture1.Line (i, 110)-(i, -20), vbBlack '縱向網(wǎng)格線

21、 Next i For fj1 = 0 To 3600 Step 0.005 Call push Call pushstay Call back Call backstay Picture1.PSet (-dsdf, s), vbRed Next fj1 End SubPrivate Sub push() '升程f = fj1 * paIf 0 <= f And f <= (f0 / 2) Thens = 2 * h * (f / f0) 2dsdf = 4 * h * f / (f0 2)End IfIf (f0 / 2) <= f And f <= f0 T

22、hens = h - (2 * h * (f0 - f) 2) / (f0 2)dsdf = (4 * h * (f0 - f) / (f0 2)End IfEnd SubPrivate Sub pushstay() '遠(yuǎn)休程f = fj1 * paIf f0 < f And f <= f0 + f01 Thens = hdsdf = 0End IfEnd SubPrivate Sub back() '回程f = fj1 * paIf f0 + f01 < f And f <= f0 + f01 + fs ThenT = f - f0 - f01s =

23、h * (1 - T / fs + (Sin(2 * pi * T / fs) / (2 * pi)dsdf = h * (Cos(2 * pi * T / fs) - 1) / fsEnd IfEnd SubPrivate Sub backstay() '近休程If f0 + f01 + fs < f And f < 2 * pi Thenf = fj1 * pas = 0dsdf = 0End IfEnd Sub5.3確定滾子半徑和偏距Option Explicit '定義自變量Dim h As DoubleDim w As Double '凸輪角速度D

24、im f0 As DoubleDim f01 As DoubleDim fs As DoubleDim i As DoubleDim pi As DoubleDim pa As DoubleDim s As DoubleDim dsdf As DoubleDim f As DoubleDim T As DoublePrivate Sub Form_Load() '賦值Form1.WindowState = 2pi = 4 * Atn(1)pa = pi / 180h = 100w = 10f0 = 90 * paf01 = 80 * pafs = 90 * paEnd SubPriva

25、te Sub Command1_Click()Picture1.ClsPicture1.DrawWidth = 1Picture1.Scale (-130, 110)-(130, -100)Picture1.Line (-130, 0)-(130, 0)Picture1.Line (0, 110)-(0, -100)For i = -130 To 130 Step 10Picture1.DrawWidth = 1Picture1.DrawStyle = 2Picture1.Line (i, 110)-(i, -100)Next iFor i = -130 To 130 Step 10Pictu

26、re1.CurrentX = i - 8: Picture1.CurrentY = 0Picture1.Print iNext iFor i = -100 To 110 Step 10Picture1.DrawWidth = 1Picture1.DrawStyle = 2Picture1.Line (-130, i)-(130, i)Picture1.CurrentX = 0: Picture1.CurrentY = i + 5Picture1.Print iNext iFor i = 0 To 90 Step 0.01f = i * paIf 0 <= f And f <= (f

27、0 / 2) Thens = 2 * h * (f / f0) 2dsdf = 4 * h * f / (f0 2)End IfIf (f0 / 2) <= f And f <= f0 Thens = h - (2 * h * (f0 - f) 2) / (f0 2)dsdf = (4 * h * (f0 - f) / (f0 2)End IfPicture1.PSet (-dsdf, s)Next iFor i = 180 To 260 Step 0.01f = i * paT = f - f0 - f01s = h * (1 - T / fs + (Sin(2 * pi * T

28、 / fs) / (2 * pi)dsdf = h * (Cos(2 * pi * T / fs) - 1) / fsPicture1.PSet (-dsdf, s)Next iPicture1.DrawStyle = 1Picture1.DrawWidth = 2Picture1.Line (-130, 51.93)-(0, -99)Picture1.Line (0, 0)-(-50, -59.59)Picture1.Line (130, 33.15)-(-50, -38.7)End Sub5.4反轉(zhuǎn)法確定凸輪輪廓Option Explicit '定義自變量Dim r0 As Dou

29、ble '定義基圓半徑Dim e As Double '定義偏心距Dim h As Double '定義行程Dim f As Double '定義凸輪轉(zhuǎn)角Dim ff As DoubleDim w As Double '定義凸輪角速度Dim f0 As Double '定義推程運動角Dim fs As Double '定義遠(yuǎn)休止角Dim f01 As Double '定義回程運動角Dim fs1 As Double '定義近休止角Dim s As Double '定義從動件位移Dim v As Double 

30、9;定義從動件速度Dim a As Double '定義從動件加速度Dim x As Double '定義凸輪理論輪廓上點橫坐標(biāo)Dim y As Double '定義凸輪理論輪廓上點縱坐標(biāo)Dim x1 As Double '定義凸輪實際輪廓上點橫坐標(biāo)Dim y1 As Double '定義凸輪實際輪廓上點縱坐標(biāo)Dim rr As Double '定義滾子半徑Dim pi As Double '定義圓周率Dim pa As Double '定義角度弧度轉(zhuǎn)換中間變量Dim T As Double '定義中間變量Dim m As

31、 Double '定義中間變量Dim s0 As Double '定義中間變量Dim i As Double '定義中間變量Dim dsdf As Double '定義ds/dfDim dxdf As Double '定義dx/dfDim dydf As Double '定義dy/dfPrivate Sub Form_Load()Form1.WindowState = 2pi = 4 * Atn(1)pa = pi / 180h = 100w = 1f0 = 90 * pafs = 90 * paf01 = 80 * pafs1 = 100 *

32、pas0 = 90e = 20rr = 10End SubPrivate Sub push()f = ff * paIf 0 <= f And f <= (f0 / 2) Thens = 2 * h * (f / f0) 2v = (4 * h * w * f) / (f0 2)a = 4 * h * w * w / (f0 * f0)dsdf = 4 * h * f / (f0 2)End IfIf (f0 / 2) < f And f <= f0 Thens = h - (2 * h * (f0 - f) 2) / (f0 2)v = (4 * h * w * (f

33、0 - f) / (f0 2)a = -4 * h * w * w / (f0 * f0)dsdf = (4 * h * (f0 - f) / (f0 2)End Ify = (s0 + s) * Sin(f) + e * Cos(f)x = (s0 + s) * Cos(f) - e * Sin(f)dxdf = dsdf * Cos(f) - (s0 + s) * Sin(f) - e * Cos(f)dydf = dsdf * Sin(f) + (s0 + s) * Cos(f) - e * Sin(f)x1 = x - rr * dydf / Sqr(dxdf 2 + dydf 2)y

34、1 = y + rr * dxdf / Sqr(dxdf 2 + dydf 2)End SubPrivate Sub back()f = ff * paT = f - f0 - fs1s = h * (1 - T / f01 + (Sin(2 * pi * T / f01) / (2 * pi)v = -h * w * (1 - Cos(2 * pi * T / f01) / f01a = -2 * pi * h * w * w * Sin(2 * T * pi / f01) / (f01 * f01)dsdf = h * (Cos(2 * pi * T / fs) - 1) / fsy =

35、(s0 + s) * Sin(f) + e * Cos(f)x = (s0 + s) * Cos(f) - e * Sin(f)dxdf = dsdf * Cos(f) - (s0 + s) * Sin(f) - e * Cos(f)dydf = dsdf * Sin(f) + (s0 + s) * Cos(f) - e * Sin(f)x1 = x - rr * dydf / Sqr(dxdf 2 + dydf 2)y1 = y + rr * dxdf / Sqr(dxdf 2 + dydf 2)End SubPrivate Sub pushstay()f = ff * pas = hv =

36、 0a = 0dsdf = 0y = (s0 + s) * Sin(f) + e * Cos(f)x = (s0 + s) * Cos(f) - e * Sin(f)dxdf = dsdf * Cos(f) - (s0 + s) * Sin(f) - e * Cos(f)dydf = dsdf * Sin(f) + (s0 + s) * Cos(f) - e * Sin(f)x1 = x - rr * dydf / Sqr(dxdf 2 + dydf 2)y1 = y + rr * dxdf / Sqr(dxdf 2 + dydf 2)End SubPrivate Sub backstay()

37、f = ff * pas = 0v = 0a = 0dsdf = 0y = (s0 + s) * Sin(f) + e * Cos(f)x = (s0 + s) * Cos(f) - e * Sin(f)dxdf = dsdf * Cos(f) - (s0 + s) * Sin(f) - e * Cos(f)dydf = dsdf * Sin(f) + (s0 + s) * Cos(f) - e * Sin(f)x1 = x - rr * dydf / Sqr(dxdf 2 + dydf 2)y1 = y + rr * dxdf / Sqr(dxdf 2 + dydf 2)End SubPri

38、vate Sub Command1_Click()Picture1.ClsPicture1.DrawWidth = 1Picture1.Scale (-220, 120)-(140, -220) Picture1.Line (-220, 0)-(140, 0) 'X Picture1.Line (255, 2)-(140, 0) Picture1.Line -(255, -2) Picture1.Print "Y" Picture1.Line (0, 120)-(0, -220) 'Y Picture1.Line (-5, 165)-(0, 170) Pic

39、ture1.Line -(5, 165) Picture1.Print "X" For i = -220 To 140 Step 10 'X軸坐標(biāo) Picture1.Line (i, 5)-(i, 0) Picture1.CurrentX = i - 7: Picture1.CurrentY = 0 Picture1.Print i Next i For i = -220 To 120 Step 10 'Y軸坐標(biāo) Picture1.Line (0, i)-(5, i) Picture1.CurrentX = -20: Picture1.CurrentY =

40、i + 2 Picture1.Print i Next i Picture1.DrawStyle = 2 For i = -220 To 120 Step 10 Picture1.Line (-220, i)-(140, i), vbBlack '橫向網(wǎng)格 Next i For i = -220 To 140 Step 10 Picture1.Line (i, 120)-(i, -220), vbBlack '縱向網(wǎng)格 Next i For ff = 0 To 360 Step 0.005 Picture1.DrawWidth = 2 If ff < f0 / pa Th

41、en Call push ElseIf ff >= f0 / pa And ff < (fs + f0) / pa Then Call pushstay ElseIf ff >= (fs + f0) / pa And ff < (fs + f0 + f01) / pa Then Call back ElseIf ff >= (fs + f0 + f01) / pa And ff <= 360 Then Call backstay End If Picture1.PSet (-y, x), vbRed 'Picture1.PSet (s0 * Sin(

42、f) + e * Cos(f), s0 * Cos(f) - e * Sin(f), vbBlue 'Picture1.PSet (y1, x1) Next ffEnd SubPrivate Sub Command2_Click()Picture1.DrawWidth = 1Picture1.Scale (-220, 120)-(140, -220) Picture1.Line (-220, 0)-(140, 0) 'X Picture1.Line (255, 2)-(140, 0) Picture1.Line -(255, -2) Picture1.Print "Y

43、" Picture1.Line (0, 120)-(0, -220) 'Y Picture1.Line (-5, 165)-(0, 170) Picture1.Line -(5, 165) Picture1.Print "X" For i = -220 To 140 Step 10 'X軸坐標(biāo) Picture1.Line (i, 5)-(i, 0) Picture1.CurrentX = i - 7: Picture1.CurrentY = 0 Picture1.Print i Next i For i = -220 To 120 Step 10

44、'Y軸坐標(biāo) Picture1.Line (0, i)-(5, i) Picture1.CurrentX = -20: Picture1.CurrentY = i + 2 Picture1.Print i Next i Picture1.DrawStyle = 2 For i = -220 To 120 Step 10 Picture1.Line (-220, i)-(140, i), vbBlack '橫向網(wǎng)格 Next i For i = -220 To 140 Step 10 Picture1.Line (i, 120)-(i, -220), vbBlack '縱向

45、網(wǎng)格 Next i For ff = 0 To 360 Step 0.005 Picture1.DrawWidth = 2 If ff < f0 / pa Then Call push ElseIf ff >= f0 / pa And ff < (fs + f0) / pa Then Call pushstay ElseIf ff >= (fs + f0) / pa And ff < (fs + f0 + f01) / pa Then Call back ElseIf ff >= (fs + f0 + f01) / pa And ff <= 360 T

46、hen Call backstay End If Picture1.PSet (-s0 * Sin(f) - e * Cos(f), s0 * Cos(f) - e * Sin(f), vbBlue Next ffEnd SubPrivate Sub Command3_Click()Picture1.DrawWidth = 1Picture1.Scale (-220, 120)-(140, -220) Picture1.Line (-220, 0)-(140, 0) 'X Picture1.Line (255, 2)-(140, 0) Picture1.Line -(255, -2)

47、Picture1.Print "Y" Picture1.Line (0, 120)-(0, -220) 'Y Picture1.Line (-5, 165)-(0, 170) Picture1.Line -(5, 165) Picture1.Print "X" For i = -220 To 140 Step 10 'X軸坐標(biāo) Picture1.Line (i, 5)-(i, 0) Picture1.CurrentX = i - 7: Picture1.CurrentY = 0 Picture1.Print i Next i For i

48、= -220 To 120 Step 10 'Y軸坐標(biāo) Picture1.Line (0, i)-(5, i) Picture1.CurrentX = -20: Picture1.CurrentY = i + 2 Picture1.Print i Next i Picture1.DrawStyle = 2 For i = -220 To 120 Step 10 Picture1.Line (-220, i)-(140, i), vbBlack '橫向網(wǎng)格 Next i For i = -220 To 140 Step 10 Picture1.Line (i, 120)-(i,

49、-220), vbBlack '縱向網(wǎng)格 Next i For ff = 0 To 360 Step 0.005 Picture1.DrawWidth = 2 If ff < f0 / pa Then Call push ElseIf ff >= f0 / pa And ff < (fs + f0) / pa Then Call pushstay ElseIf ff >= (fs + f0) / pa And ff < (fs + f0 + f01) / pa Then Call back ElseIf ff >= (fs + f0 + f01) /

50、 pa And ff <= 360 Then Call backstay End If Picture1.PSet (-y1, x1) Next ffEnd SubPrivate Sub command4_click()Picture1.DrawWidth = 1Picture1.Scale (-220, 120)-(140, -220) Picture1.Line (-220, 0)-(140, 0) 'X Picture1.Line (255, 2)-(220, 0) Picture1.Line -(255, -2) Picture1.Print "Y" Picture1.Line (0, 120)-(0, -220) 'Y Picture1.Line (-5, 165)-(0, 170) Picture1.Line -(5, 165) Picture1.Print "X" For i = -220 To 140 Step 10 'X軸坐標(biāo) Picture1.Line (i, 5)-(i, 0) Picture1.CurrentX = i - 7: Picture1.CurrentY = 0 Picture1