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1、机械原理课程设计说明书 牛头刨床传动机构的设计及其运动分析设 计 者： 班 级： 学 号： 指导教师： 日期：2010年6月28日机构示意图：附1：齿轮机构的点算源程序及运行结果1、源程序：Option ExplicitPrivate Const pi = 3.14159Dim z1, z2, m, t, hax, cx As SingleDim alpha, alp, alpa1, alpa2 As SingleDim d1, d2, x1, x2, ha1, ha2, hf1, hf2, h1, h2 As SingleDim db1, db2, da1, da2, df1, df2, a
2、, e, s1, s2, sa1, sa2 As SinglePrivate Sub command1_click() 清零z1 = 0z2 = 0m = 0alpha = 0hax = 0cx = 0Text1.Text = Text2.Text = Text3.Text = Text4.Text = Text5.Text = Text6.Text = Text7.Text = Text8.Text = Text9.Text = Text10.Text = Text11.Text = Text12.Text = Text13.Text = Text14.Text = Text15.Text
3、= Text16.Text = Text17.Text = Text18.Text = Text19.Text = Text20.Text = Text21.Text = Text22.Text = End SubPrivate Sub command2_click()z1 = Val(InputBox(请输入第一个齿轮的齿数)z2 = Val(InputBox(请输入第二个齿轮的齿数)m = Val(InputBox(请输入齿轮的模数)alpha = Val(InputBox(请输入齿轮的压力角)hax = Val(InputBox(请输入齿轮的齿顶高系数)cx = Val(InputBox
4、(请输入齿轮的顶隙系数)t = 180# / pialp = alpha / t 角度转化成弧度End SubPrivate Sub Command3_Click()d1 = m * z1d2 = m * z2x1 = (17 - z1) / 17x2 = 0 - x1ha1 = (hax + x1) * mha2 = (hax + x2) * mhf1 = (hax + cx - x1) * mhf2 = (hax + cx - x2) * mh1 = (2 * hax + cx) * mh2 = (2 * hax + cx) * mda1 = d1 + 2 * ha1da2 = d2 +
5、2 * ha2df1 = d1 - 2 * hf1df2 = d2 - 2 * hf2a = 0.5 * m * (z1 + z2)db1 = d1 * Cos(alp)db2 = d2 * Cos(alp)alpa1 = Atn(Sqr(da1 / 2) 2 - (db1 / 2) 2) / (db1 / 2) 计算齿顶1的圆压力角alpa2 = Atn(Sqr(da2 / 2) 2 - (db2 / 2) 2) / (db2 / 2) 计算齿顶2的圆压力角e = (z1 * (Tan(alpa1) - Tan(alp) + z2 * (Tan(alpa2) - Tan(alp) / (2
6、* pi) 计算重合度s1 = pi * m / 2 + 2 * x1 * m * Tan(alp)s2 = pi * m / 2 + 2 * x2 * m * Tan(alp)sa1 = s1 * da1 / d1 - 2 * da1 / 2 * (Tan(alpa1) - alpa1 - Tan(alp) + alp)sa2 = s2 * da2 / d2 - 2 * da2 / 2 * (Tan(alpa2) - alpa2 - Tan(alp) + alp)Text1.Text = d1Text2.Text = d2Text3.Text = x1Text4.Text = x2Text5
7、.Text = ha1Text6.Text = ha2Text7.Text = hf1Text8.Text = hf2Text9.Text = h1Text10.Text = h2Text11.Text = da1Text12.Text = da2Text13.Text = df1Text14.Text = df2Text15.Text = aText16.Text = aText17.Text = eText18.Text = eText19.Text = s1Text20.Text = s2Text21.Text = sa1Text22.Text = sa2End SubPrivate S
8、ub Command4_Click()If sa1 = 0.5 * m And sa2 = 0.5 * m And e = 1.2 ThenMsgBox 此对齿轮的平稳性及齿顶强度均符合要求, , 齿轮校核MsgBox 请记录数据ElseMsgBox 请重新设计齿轮参数, , 齿轮校核z1 = 0z2 = 0m = 0alpha = 0hax = 0cx = 0Text1.Text = Text2.Text = Text3.Text = Text4.Text = Text5.Text = Text6.Text = Text7.Text = Text8.Text = Text9.Text = T
9、ext10.Text = Text11.Text = Text12.Text = Text13.Text = Text14.Text = Text15.Text = Text16.Text = Text17.Text = Text18.Text = Text19.Text = Text20.Text = Text21.Text = Text22.Text = End IfEnd SubPrivate Sub Command5_Click()Unload MeEnd SubPrivate Sub Form_Load()form1.ShowCommand1.SetFocusEnd Sub2、运行结
10、果：附2：导杆机构设计的源程序及运行结果1、源程序：% 导杆的运动分析fi1=0:0.001:2*pi; %曲柄的角位移l6=350; %机架长度l1=l6*sin(18*pi/180); %曲柄长度l3=450/(2*sin(18*pi/180); %导杆的长度n1=260; z1=14;z2=56;n2=z1*n1/z2;w1=n2*pi/60; %曲柄的角速度hold onaxis equal axis autofor fi1=0:0.001:pi/2;fi3=(atan(l6+l1*sin(fi1)./(l6*cos(fi1); %导杆的角位移s3=(l1*cos(fi1)./cos(
11、fi3); %滑块A的位移w3=l1.*cos(fi1-fi3)./s3; %导杆的角速度v=-l1*w1.*sin(fi1-fi3); %滑块A的速度e3=(l1*w1.2.*sin(fi3-fi1)-2*w3.*v)./(s3); %导杆的角加速度ad=l3*e3.*sin(fi3)+l3*w3.2.*cos(fi3); %刨刀的加速度plot(fi1,fi3;w3;e3,linewidth,1) %绘制导杆的（角）位移、速度及加速度与时间的关系endhold on for fi1=pi/2:0.001:3*pi/2;fi3=(atan(l6+l1*sin(fi1)./(l6*cos(fi
12、1);s3=(l1*cos(fi1)./cos(fi3);w3=l1.*cos(fi1-fi3)./s3;v=-l1*w1.*sin(fi1-fi3);e3=(l1*w1.2.*sin(fi3-fi1)-2*w3.*v)./(s3);plot(fi1,fi3;w3;e3,linewidth,1) %绘制导杆的（角）位移、速度及加速度与时间的关系 endfor pha1=3*pi/2:0.0001:2*pifi3=(atan(l6+l1*sin(fi1)./(l6*cos(fi1);s3=(l1*cos(fi1)./cos(fi3);w3=l1.*cos(fi1-fi3)./s3;v=-l1*w
13、1.*sin(fi1-fi3);e3=(l1*w1.2.*sin(fi3-fi1)-2*w3.*v)./(s3);plot(fi1,fi3;w3;e3,linewidth,1) %绘制导杆的（角）位移、速度及加速度与时间的关系endlegend(3,3,3)xlabel(1)ylabel(3 3 3 )2、运行结果附3：导杆机构设计的源程序及运行结果1、源程序% 刨头的运动分析fi1=0:0.001:2*pi; %曲柄的角位移l6=350; %机架长度l1=l6*sin(18*pi/180); %曲柄长度l3=450/(2*sin(18*pi/180); %导杆的长度n1=260; z1=14;z2=56;n2=z1*n1/z2;w1=n2*pi/60; %曲柄的角速度hold onaxis autofor fi1=0:0.001:pi/2;fi3=(atan(l6+l1*sin(fi1)./(l6*cos(fi1); %导杆的角位移s
