机械原理课程设计报告偏置直动滚子推杆盘形凸轮.doc

凸轮大作业选题：凸轮5-C一：题目及原始数据：利用计算机辅助设计完成偏置直动滚子推杆盘形凸轮机构的设计，数据如下所示，凸轮沿逆时针方向做匀速运动具体要求如下：1.推程运动规律为等加速等减速运动，回程运动规律为五次多项式运动；2.近休凸轮转角为0°-30°；推程凸轮转角30°-210°；远休凸轮转角210°-280°；回程凸轮转角280°-360°3.初选基圆半径为22mm；4.偏距为+14mm5.滚子半径为18mm6.推杆行程为35mm7.许用压力角为α1=35°，α2=65°8.最小曲率半径为0.35rr9.计算点数取120.二：推杆运动规律及凸轮轮廓线方程1.推程加速阶段：s1=70.*a1.*a1/pi/pi; x1=(s0+s1).*sin(a1)+e*cos(a1); y1=(s0+s1).*cos(a1)-e*sin(a1);k1=140*a1/pi^2; i1=[(k1-e).*sin(a1)+(s0+s1).*cos(a1)].*[(k1-e).*(k1-e)+(s0+s1).*(s0+s1)].^(-1/2); j1=[-(k1-e).*cos(a1)+(s0+s1).*sin(a1)].*[(k1-e).*(k1-e)+(s0+s1).*(s0+s1)].^(-1/2); x10=x1-18*j1; y10=y1-18*i1;2.推程减速阶段：s11=35-70.*(pi-a11).*(pi-a11)/pi/pi; x11=(s0+s11).*sin(a11)+e*cos(a11); y11=(s0+s11).*cos(a11)-e*sin(a11); k11=140.*(pi-a1)/pi^2; i11=[(k11-e).*sin(a11)+(s0+s11).*cos(a11)].*[(k11-e).*(k11-e)+(s0+s11).*(s0+s11)].^(-1/2); j11=[-(k11-e).*cos(a11)+(s0+s11).*sin(a11)].*[(k11-e).*(k11-e)+(s0+s11).*(s0+s11)].^(-1/2); x101=x11-18*j11; y101=y11-18*i11;3.远休阶段：x2=(s0+s2).*sin(a2)+e*cos(a2); y2=(s0+s2).*cos(a2)-e*sin(a2); k2=0; i2=[(k2-e).*sin(a2)+(s0+s2).*cos(a2)].*[(k2-e).*(k2-e)+(s0+s2).*(s0+s2)].^(-1/2); j2=[-(k2-e).*cos(a2)+(s0+s2).*sin(a2)].*[(k2-e).*(k2-e)+(s0+s2).*(s0+s2)].^(-1/2); x20=x2-18*j2; y20=y2-18*i2;4.回程阶段：a30=33*pi/18-a3; s3=(350.*a30.*a30.*a30/(4*pi/9)^3-525.*a30.*a30.*a30.*a30/(4*pi/9)^4+210.*a30.*a30.*a30.*a30.*a30/(4*pi/9)^5); x3=(s0+s3).*sin(a3)+e*cos(a3); y3=(s0+s3).*cos(a3)-e*sin(a3); k3=-1050.*a30.*a30/(4*pi/9)^3+2100.*a30.*a30.*a30/(4*pi/9)^4-1050.*a30.*a30.*a30.*a30/(4*pi/9)^5; i3=[(k3-e).*sin(a3)+(s0+s3).*cos(a3)].*[(k3-e).*(k3-e)+(s0+s3).*(s0+s3)].^(-1/2); j3=[-(k3-e).*cos(a3)+(s0+s3).*sin(a3)].*[(k3-e).*(k3-e)+(s0+s3).*(s0+s3)].^(-1/2); x30=x3-18*j3; y30=y3-18*i3;5.近休阶段：s4=0;x4=(s0+s4).*sin(a4)+e*cos(a4);y4=(s0+s4).*cos(a4)-e*sin(a4);k4=0;i4=[(k4-e).*sin(a4)+(s0+s4).*cos(a4)].*[(k4-e).*(k4-e)+(s0+s4).*(s0+s4)].^(-1/2); j4=[-(k4-e).*cos(a4)+(s0+s4).*sin(a4)].*[(k4-e).*(k4-e)+(s0+s4).*(s0+s4)].^(-1/2); x40=x4-18*j4; y40=y4-18*i4;三：matlab计算程序e=14;r0=22s0=sqrt(r0^2-e^2);c111=1;c3=1;for(i=1:0.1:200) %由压力角条件循环求适宜基圆半径if (c111<35/180)&&(c3<65/180) %判断条件else a1=0:pi/60:pi/2; % 推程加速阶段 s1=70.*a1.*a1/pi/pi; x1=(s0+s1).*sin(a1)+e*cos(a1); y1=(s0+s1).*cos(a1)-e*sin(a1); k1=140*a1/pi^2; % 对s1求导 i1=[(k1-e).*sin(a1)+(s0+s1).*cos(a1)].*[(k1-e).*(k1-e)+(s0+s1).*(s0+s1)].^(-1/2); j1=[-(k1-e).*cos(a1)+(s0+s1).*sin(a1)].*[(k1-e).*(k1-e)+(s0+s1).*(s0+s1)].^(-1/2); x10=x1-18*j1; y10=y1-18*i1; a11=pi/2:pi/60:pi; %推程减速阶段 s11=35-70.*(pi-a11).*(pi-a11)/pi/pi; x11=(s0+s11).*sin(a11)+e*cos(a11); y11=(s0+s11).*cos(a11)-e*sin(a11); k11=140.*(pi-a1)/pi^2; i11=[(k11-e).*sin(a11)+(s0+s11).*cos(a11)].*[(k11-e).*(k11-e)+(s0+s11).*(s0+s11)].^(-1/2); j11=[-(k11-e).*cos(a11)+(s0+s11).*sin(a11)].*[(k11-e).*(k11-e)+(s0+s11).*(s0+s11)].^(-1/2); x101=x11-18*j11; y101=y11-18*i11; a2=pi:pi/60:25*pi/18; %凸轮远休阶段 s2=35; %推杆行程 x2=(s0+s2).*sin(a2)+e*cos(a2);y2=(s0+s2).*cos(a2)-e*sin(a2); k2=0; i2=[(k2-e).*sin(a2)+(s0+s2).*cos(a2)].*[(k2-e).*(k2-e)+(s0+s2).*(s0+s2)].^(-1/2); j2=[-(k2-e).*cos(a2)+(s0+s2).*sin(a2)].*[(k2-e).*(k2-e)+(s0+s2).*(s0+s2)].^(-1/2); x20=x2-18*j2; y20=y2-18*i2; a3=25*pi/18:pi/60:33*pi/18; %推杆回程阶段 a30=33*pi/18-a3; s3=(350.*a30.*a30.*a30/(4*pi/9)^3-525.*a30.*a30.*a30.*a30/(4*pi/9)^4+210.*a30.*a30.*a30.*a30.*a30/(4*pi/9)^5); x3=(s0+s3).*sin(a3)+e*cos(a3); y3=(s0+s3).*cos(a3)-e*sin(a3); k3=-1050.*a30.*a30/(4*pi/9)^3+2100.*a30.*a30.*a30/(4*pi/9)^4-1050.*a30.*a30.*a30.*a30/(4*pi/9)^5; i3=[(k3-e).*sin(a3)+(s0+s3).*cos(a3)].*[(k3-e).*(k3-e)+(s0+s3).*(s0+s3)].^(-1/2); j3=[-(k3-e).*cos(a3)+(s0+s3).*sin(a3)].*[(k3-e).*(k3-e)+(s0+s3).*(s0+s3)].^(-1/2); x30=x3-18*j3; y30=y3-18*i3; a4=33*pi/18:pi/60:2*pi; %推杆近休阶段 s4=0; x4=(s0+s4).*sin(a4)+e*cos(a4); y4=(s0+s4).*cos(a4)-e*sin(a4); k4=0; i4=[(k4-e).*sin(a4)+(s0+s4).*cos(a4)].*[(k4-e).*(k4-e)+(s0+s4).*(s0+s4)].^(-1/2); j4=[-(k4-e).*cos(a4)+(s0+s4).*sin(a4)].*[(k4-e).*(k4-e)+(s0+s4).*(s0+s4)].^(-1/2); x40=x4-18*j4; y40=y4-18*i4; plot(x10,y10,'-g*',x101,y101,'-g+',x20,y20,'-r*',x30,y30,'-b*',x40,y40,'-k*',x1,y1,'-g*',x11,y11,'-g+',x2,y2,'-r*',x3,y3,'-b*',x4,y4,'-k*') %凸轮轮廓曲线绘制title(‘凸轮轮廓曲线绘制');xlabel('Variable X'); %X轴ylabel('Variable Y'); %Y轴text(-250,-200,'工作廓线') %文字标注text(100,-100,'理论廓线'); grid on 。