【導(dǎo)讀】輪機(jī)構(gòu)結(jié)構(gòu)簡(jiǎn)單、緊湊，但能在實(shí)現(xiàn)控制功能的同時(shí)傳遞較大的功率。因此，凸輪機(jī)構(gòu)在生。本文通過(guò)凸輪機(jī)構(gòu)運(yùn)動(dòng)參數(shù)理論計(jì)算，建立凸輪機(jī)構(gòu)數(shù)學(xué)模型，利用VisualBasic實(shí)?，F(xiàn)面向?qū)ο蠡木幊?。機(jī)構(gòu)設(shè)計(jì)的方法，建立凸輪機(jī)構(gòu)參數(shù)數(shù)學(xué)模型。及凸輪輪廓曲線，并將VB源程序打包成可執(zhí)行程序。為了提高產(chǎn)品的質(zhì)量和生產(chǎn)率，對(duì)機(jī)械設(shè)備的性能指標(biāo)提出更高的要求，就凸輪機(jī)構(gòu)而言，必須進(jìn)一步提高其設(shè)計(jì)水平，在解析法的基礎(chǔ)上開(kāi)展計(jì)算機(jī)輔助設(shè)計(jì)的研究和推廣應(yīng)用。在凸輪機(jī)構(gòu)制造方面，與發(fā)達(dá)國(guó)家相比，還有一定的差距。到企業(yè)在制造方面所投入的財(cái)力和人力遠(yuǎn)遠(yuǎn)不足，也未引起有關(guān)部門的重視。再不下大力氣，我國(guó)的凸輪機(jī)構(gòu)的研究水平還將長(zhǎng)期落后于世界先進(jìn)水平。精度要求較高且結(jié)果復(fù)雜的凸輪廓線，通常采用解析法設(shè)計(jì)。線的關(guān)鍵問(wèn)題是將凸輪廓線表示為數(shù)學(xué)方程，這一過(guò)程稱為建立數(shù)學(xué)模型。

　　

【正文】 = lin從動(dòng)件 .X1 + 10 39。 = 0 39。 = amp。HFFFFamp。 If r1 0 Then (lin從動(dòng)件 .X2, lin從動(dòng)件 .Y2), r1, amp。HFFFFamp。 (lin從動(dòng)件 .X2, lin從動(dòng)件 .Y2), r1, amp。HFFFFamp。 (lin從動(dòng)件 .X2, lin從動(dòng)件 .Y2), 5, amp。HFFFF00 End If 39。畫坐標(biāo)軸 = PointXY(0, 2): = PointXY(0, 2) = PointXY(0, 2): = PointXY(0, 2) + 200 39。O(1) = : O(2) = = O(2) 10 = O(2) + 30 For i = 0 To 360 = 3 If i = 0 Then (O(1), O(2)), amp。HFFamp。 39。 (XY(i, 1), XY(i, 2)), amp。HFFamp。 39。 = 1 Next = O(1): = O(2) = O(1): = O(2) 40 = XY(δ0, 1): = XY(δ0, 2) = XY(δ0, 1): = O(2) 40 = O(2) 10 = ( + ) / 2 20 = XY(δ0 + δ1, 1): = XY(δ0 + δ1, 2) = XY(δ0 + δ1, 1): = O(2) 40 = O(2) 10 = ( + ) / 2 20 = XY(δ0 + δ1 + δ2, 1): = XY(δ0 + δ1 + δ2, 2) = XY(δ0 + δ1 + δ2, 1): = O(2) 40 = O(2) 10 = ( + ) / 2 20 = XY(360, 1): = XY(360, 2) = XY(360, 1): = O(2) 40 = O(2) 10 = ( + ) / 2 20 = O(1) 20: = (O(2) + XY(δ0, 2)) / 2 + 10 = O(1) 30: = XY(δ0, 2) = XY(δ0, 1): = XY(δ0, 2) = O(1) 30: = O(2) = O(1): = O(2) End Sub 公用模塊： Option Explicit Public Const PI = Public r0 As Single 39?；鶊A半徑 Public x0 As Single, y0 As Single 39。圓心位置 Public h As Integer 39。升程 Public δ0 As Integer Public δ1 As Integer Public δ2 As Integer Public δ3 As Integer Public e As Single 39。偏心距 Public r1 As Single 39。滾子半徑 Public L As Integer 39。從動(dòng)件長(zhǎng)度 Public DeltaSita As Single 39。角度遞增值 Public δθ As Single 39。角度遞增值 Public Cosδθ As Single Public sinδθ As Single Public CurrentXY(1 To 2) As Single 39。當(dāng)前點(diǎn)的坐標(biāo) Public PointXY(360, 2) As Single 39。凸輪理論輪廓上點(diǎn)的坐標(biāo) Public FactPXY(360, 2) As Single 39。凸輪實(shí)際輪廓上點(diǎn)的坐標(biāo) Public XY(360, 2) As Single 39。位移線圖上點(diǎn)的坐標(biāo) Public 基圓 XY(360, 2) As Single 39?；鶊A 上點(diǎn)的坐標(biāo) Public 偏距圓 XY(360, 2) As Single 39?；鶊A上點(diǎn)的坐標(biāo) Public O(1 To 2) As Integer 39。坐標(biāo)軸原點(diǎn) Public i等分 DT0 As Integer Public i等分 DT2 As Integer Public Sub 計(jì)算凸輪輪廓上點(diǎn) () Dim Sita As Double Dim s As Single 39。位移 39。Dim r As Single 39。凸輪曲率半徑 Dim i As Integer Dim s0 As Single Dim δ As Single Dim dx_DT As Single 39。dx/dδ Dim dy_DT As Single 39。dy/dδ Dim sinθ As Single Dim cosθ As Single s0 = Sqr(r0 ^ 2 e ^ 2) 39。偏距圓上點(diǎn) For i = 0 To 360 δ = i * PI / 180 偏距圓 XY(i, 1) = x0 + e * Cos(δ ) 偏距圓 XY(i, 2) = y0 + e * Sin(δ ) Next 39。基圓上點(diǎn) For i = 0 To 360 δ = i * PI / 180 基圓 XY(i, 1) = 偏距圓 XY(i, 1) + s0 * Sin(δ ) 基圓 XY(i, 2) = 偏距圓 XY(i, 2) + s0 * Cos(δ ) Next 39。凸輪上點(diǎn) For i = 0 To 360 δ = i * PI / 180 39。推程等加速等減速；回程簡(jiǎn)諧運(yùn)動(dòng) Select Case i Case 0 To δ0 s = h * i / δ0 dx_DT = Sin(δ) * (h / δ0 e) + (s0 + s) * Cos(δ) dy_DT = Cos(δ) * (h / δ0 e) (s0 + s) * Sin(δ) Case (δ0) To (δ0 + δ1) s = h dx_DT = Sin(δ) * (e) + (s0 + s) * Cos(δ) dy_DT = Cos(δ) * (e) (s0 + s) * Sin(δ) Case (δ0 + δ1) To (δ0 + δ1 + δ2 / 2) s = h 2 * h * (i δ0 δ1) ^ 2 / δ2 ^ 2 dx_DT = Sin(δ) * (4 * h * (i δ0 δ1) / δ2 ^ 2 e) + (s0 + s) * Cos(δ) dy_DT = Cos(δ) * (4 * h * (i δ0 δ1) / δ2 ^ 2 e) (s0 + s) * Sin(δ) Case (δ0 + δ1 + δ2 / 2) To (δ0 + δ1 + δ2) s = 2 * h 4 * h * (CSng(i) δ0 δ1) / δ2 + 2 * h * ((CSng(i) δ0 δ1) / δ2) ^ 2 dx_DT = Sin(δ) * (4 * h * (CSng(i) δ0 δ1 δ2) / δ2 ^ 2 e) + (s0 + s) * Cos(δ) dy_DT = Cos(δ) * (4 * h * (CSng(i) δ0 δ1 δ2) / δ2 ^ 2 e) (s0 + s) * Sin(δ) Case (δ0 + δ1 + δ2) To 360 s = 0 dx_DT = Sin(δ) * (e) + (s0 + s) * Cos(δ) dy_DT = Cos(δ) * (e) (s0 + s) * Sin(δ) End Select 39。理論輪廓上點(diǎn) PointXY(i, 1) = x0 + (s0 + s) * Sin(δ) + e * Cos(δ) PointXY(i, 2) = y0 + (s0 + s) * Cos(δ) e * Sin(δ) 39。實(shí)際輪廓上點(diǎn) sinθ = dx_DT / Sqr(dx_DT ^ 2 + dy_DT ^ 2) cosθ = dy_DT / Sqr(dx_DT ^ 2 + dy_DT ^ 2) FactPXY(i, 1) = PointXY(i, 1) r1 * cosθ FactPXY(i, 2) = PointXY(i, 2) r1 * sinθ 39。計(jì)算線圖上點(diǎn)坐標(biāo) O(1) = : O(2) = PointXY(0, 2) XY(i, 1) = O(1) + i: XY(i, 2) = O(2) + s Next End Sub 主模塊： Option Explicit 39。*************************************** 39。 39。 凸輪機(jī)構(gòu)演示動(dòng)畫 39。 39。 席翔 2020年 7月 2日 39。 39。**************************************** 39。Option Base 1 Public mainfrm As frm凸輪設(shè)計(jì) Sub Main() r0 = 100 δ0 = 100 δ1 = 60 δ2 = 100 δ3 = 100 h = 90 L = 300 δθ = 10 r1 = 15 e = 30 Set mainfrm = New frm凸輪設(shè)計(jì) End Sub 到此就全部結(jié)束了，若想要源文件可與作者聯(lián)系！