西工大機械原理大作業(yè)2凸輪機構(gòu)作業(yè)

word文檔可自由復(fù)制編輯大作業(yè)（二）凸輪機構(gòu)設(shè)計（題號：1-A）班級___________學號_________姓名______________成績______________________同組者_______完成日期2014年1月2日

目錄1.題目及原始數(shù)據(jù) 32.推桿的運動規(guī)律及凸輪廓線方程. 33.計算程序 44.計算結(jié)果及分析 115.凸輪機構(gòu)圖 136.體會與建議 147.參考書 148.附錄 15凸輪機構(gòu)設(shè)計1.題目及原始數(shù)據(jù)利用計算機輔助設(shè)計完成下列偏置式直動滾子推桿盤形構(gòu)件（推桿的移動副導(dǎo)路位于凸輪盤回轉(zhuǎn)中心右側(cè)）或擺動滾子推桿盤形凸輪機構(gòu)的設(shè)計，設(shè)計已知數(shù)據(jù)如下表所示，機構(gòu)中凸輪沿著逆時針方向作勻速轉(zhuǎn)動。表1凸輪機構(gòu)的從動件運動規(guī)律直動推桿組題號推程運動規(guī)律回程運動規(guī)律1等加速等減速運動余弦加速度運動表2凸輪機構(gòu)的推桿在近休、推程、遠休及回程階段的凸輪轉(zhuǎn)角題號近休凸輪轉(zhuǎn)角推程凸輪轉(zhuǎn)角遠休凸輪轉(zhuǎn)角回程凸輪轉(zhuǎn)角A0゜～60゜60゜～180゜180゜～270゜270゜～360゜表3偏置直動滾子推桿盤形凸輪機構(gòu)的已知參數(shù)題號初選基圓半徑r0/mm偏距e/mm滾子半徑rr/mm推桿行程h/mm許用壓力角許用最小曲率半徑[ρamin][α1][α2]A15+5102830゜70゜0.3rr2.推桿的運動規(guī)律及凸輪廓線方程推程：等加速s=2h等減速s=h-2h遠休:s=h回程:余弦加速度運動s=h近休:s=0理論輪廓廓線方程實際廓線方程實際廓線方程3.計算程序①C語言計算坐標程序#include<stdio.h>#include<math.h>#include<stdlib.h>#definePI3.141592653doublefact[72][2];doubletheory[72][2];intRevit_degree1[3]={120,165,180},Revit_degree2[3]={210,215,250},Revit_degree3[3]={300,315,330};//已知參數(shù)doubleRevit_h[3]={28,30,35},Revit_rb[3]={14,19,21};doubleRevit_A1[3]={30,30,35},Revit_A2[3]={70,75,65};doubleRevit_P[3]={13,18.2,24.3},Revit_e[3]={5,10,14};doubleRevit_r[3]={10,14,18};doubleb=1;intk=0;//選擇組別0-A1-B2-Cintang1=Revit_degree1[k],ang2=Revit_degree2[k],ang3=Revit_degree3[k];doubleh=Revit_h[k],rb=Revit_rb[k];doubleA1=Revit_A1[k]*PI/180,A2=Revit_A2[k]*PI/180;doubler=Revit_r[k],e=Revit_e[k],P=Revit_P[k];doubleSo;doubleS(intI){ doubles; doubleA; doubleB; if(I<=ang1/2) { A=I*PI/180; B=ang1*PI/180; s=2*h*pow(A/B,2); } elseif((I>ang1/2)&&(I<=ang1)) { A=I*PI/180; B=ang1*PI/180; s=h-2*h*pow((B-A)/B,2); } elseif(I<=ang2)s=h; elseif(I<=ang3) { A=(I-ang2)*PI/180; B=(ang3-ang2)*PI/180; s=h*(1+cos(PI*A/B))/2; } elses=0; return(s);}doubleds(intQ){ doubleA,B,C; if(Q<=ang1/2) { A=Q*PI/180; B=ang1*PI/180; C=4*h*A/(B*B); } elseif((Q>ang1/2)&&(Q<=ang1)) { A=Q*PI/180; B=ang1*PI/180; C=4*h*(B-A)/(B*B); } elseif(Q<=ang2)C=0; elseif(Q<=ang3) { A=(Q-ang2)*PI/180; B=(ang3-ang2)*PI/180; C=-PI*h*sin(PI*A/B)/(2*B); } elseC=0; returnC;}doubledss(intB3){ doubleA,B,C; if(B3<=ang1/2) { A=B3*PI/180; C=ang1*PI/180; B=4*h/(C*C); } elseif(B3>ang1/2&&B3<=ang1) { A=B3*PI/180; C=ang1*PI/180; B=-4*h/(C*C); } elseif(B3<=ang2)B=0; elseif(B3<=ang3) { A=(B3-ang2)*PI/180; C=(ang3-ang2)*PI/180; B=-PI*PI*h*cos(PI*A/C)/(2*C*C); }elseB=0; return(B);}voidxy(intang)//計算點坐標{ doubleA,B,C,E,F,dx,dy; A=ang*PI/180; B=S(ang); C=ds(ang);dx=(So+B)*cos(A)+sin(A)*(C-e);dy=-sin(A)*(So+B)+cos(A)*(C-e); E=-r*dy/sqrt(dx*dx+dy*dy); F=r*dx/sqrt(dx*dx+dy*dy); theory[ang/5][0]=(So+B)*sin(A)+e*cos(A); theory[ang/5][1]=(So+B)*cos(A)-e*sin(A); fact[ang/5][0]=theory[ang/5][0]-E; fact[ang/5][1]=theory[ang/5][1]-F;}doublea(intB1)//計算壓力角{ doubleA,B; A=sqrt((ds(B1)-e)*(ds(B1)-e)); B=S(B1); returnatan(A/(B+So));}doublep(intB2)//計算曲率半徑{ doubledx,dy,dxx,dyy; doubleA,B,C,D,E; A=B2*PI/180; B=ds(B2); C=S(B2);D=dss(B2); dx=(So+C)*cos(A)+sin(A)*B-e*sin(A);dy=-sin(A)*(So+C)+B*cos(A)-e*cos(A); dxx=-(C+So)*sin(A)+cos(A)*B+D*sin(A)+(C-e)*cos(A); dyy=-cos(A)*(So+C)+D*cos(A)-sin(A)*B+(e-B)*sin(A); E=sqrt(pow(dx*dx+dy*dy,3))/sqrt(pow((dx*dyy-dxx*dy),2)); return(E);}voidmain(){FILE*fp; inti=0; intk,h,l; doubleangle1max=0,angle2max=0,pmin=1000;if((fp=fopen("text.txt","w"))==NULL){ printf("Cann'topenthisfile.\n"); exit(0); } fprintf(fp,"理論坐標實際坐標\n"); fprintf(fp,"xyx'y'");for(;i!=360;)//選擇基圓半徑{ rb=rb+b; So=sqrt(rb*rb-e*e); for(i=0;i<=ang1;i=i+5) { if(a(i)>A1||p(i)<P) break; } if(ang1+5-i)continue; for(i=ang1+5;i<=ang2;i=i+5) { if(p(i)<P)break; } if(ang2+5-i)continue; for(i=ang2+5;i<=ang3;i=i+5) { if(a(i)>A2||p(i)<P) break; } if(ang3+5-i)continue; for(i=ang3+5;i<360;i=i+5) { if(p(i)<P) break; }} for(i=0;i<360;i=i+5)//寫入數(shù)組數(shù)據(jù) { xy(i); } for(i=0;i<=ang1;i=i+5)//選擇壓力角及最小曲率半徑 { if(angle1max<a(i)) { angle1max=a(i); k=i; } if(pmin>p(i)) { pmin=p(i); h=i; } } for(i=ang2;i<=ang3;i=i+5) { if(angle2max<a(i)) { angle2max=a(i); l=i; } if(pmin>p(i)) { pmin=p(i); h=i; } }for(i=0;i<72;i++){ fprintf(fp,"\n"); {fprintf(fp,"%12.3f\t%12.3f\t%12.3f\t%12.3f\t",theory[i][0],theory[i][1],fact[i][0],fact[i][1]); }} fclose(fp); printf("理論坐標(x,y)"); printf("實際坐標(x,y)");printf("\n"); for(i=0;i<72;i++) { printf("%f",theory[i][0]); printf(""); printf("%f",theory[i][1]); printf(""); printf("%f",fact[i][0]); printf(""); printf("%f",fact[i][1]); printf("\n"); } printf("基圓半徑是:%f\n",rb); printf("推程最大壓力角是:%f\n",angle1max*180/PI); printf("此時角度是是:%d\n",k); printf("回程最大壓力角是:%f\n",angle2max*180/PI); printf("此時角度是是:%d\n",l); printf("最小曲率半徑是:%f\n",pmin); printf("此時角度是:%d\n",h);}②Matlab繪圖程序x=[57.1249.24511.396.....];%理論廓線xy=[24.495....];%理論廓線yx1=[3.......];%實際廓線xy1=[14.697....];%實際廓線yro=25%基圓半徑h=28%推程rr=10%滾圓半徑holdontext(ro+h+3,0,'X') %標注橫軸text(0,ro+rr+3,'Y') %標注縱軸text(-5,5,'O') %標注直角坐標系原點title('偏置直動滾子推桿盤形凸輪機構(gòu)設(shè)計') %標注圖形標題plot([-(ro+h)(ro+h)],[00],'k') %橫軸(黑色)plot([00],[-(ro+h)(ro+rr)],'k') %縱軸(黑色)ct=linspace(0,2*pi); %畫圓的極角變化范圍plot(ro*cos(ct),ro*sin(ct),'b') %基圓(藍色)plot(x,y,'r--')plot(x1,y1,'k')4.計算結(jié)果及分析理論坐標X理論坐標Y實際坐標X‘實際坐標Y‘524.495314.6977.12424.0635.14214.2619.24523.6387.29413.8311.39623.2119.45313.40213.60822.76911.62212.96915.91122.2913.80612.51418.32821.74416.01812.01520.87821.118.27511.44423.57520.31720.59510.77126.42519.35322.9959.9629.42618.16425.4868.97332.56916.70128.0747.76935.83814.91730.7556.30539.02812.68232.684.95541.9039.93134.4723.23944.3946.71936.0691.17946.4383.11137.411-1.19347.985-0.82138.449-3.83148.995-539.138-6.68449.438-9.34439.444-9.69249.297-13.7739.345-12.79248.567-18.1938.828-15.91847.254-22.5237.893-19.00245.375-26.67636.548-21.97742.962-30.57834.815-24.77940.133-34.20632.523-27.71936.999-37.57329.983-30.44833.584-40.65527.215-32.94529.913-43.42724.24-35.19226.014-45.86921.081-37.17121.917-47.96217.761-38.86717.654-49.6914.306-40.26713.256-51.03910.742-41.368.757-527.096-42.1394.192-52.5663.397-42.597-0.406-52.731-0.329-42.731-5-52.495-4.052-42.54-9.556-51.859-7.744-42.025-14.04-50.829-11.377-41.19-18.416-49.412-14.924-40.042-22.653-47.619-18.357-38.589-26.717-45.463-21.65-36.842-30.578-42.962-24.779-34.815-34.084-39.959-26.929-32.973-37.031-36.353-28.764-30.726-39.329-32.258-30.224-28.122-40.918-27.807-31.257-25.227-41.773-23.146-31.825-22.12-41.9-18.417-31.911-18.895-41.341-13.761-31.521-15.649-40.168-9.299-30.686-12.475-38.477-5.134-29.459-9.455-36.384-1.338-27.912-6.651-34.0142.043-26.122-4.098-31.4955-24.167-1.805-28.9487.552-22.1130.252-26.489.746-20.0032.128-24.17811.655-17.8543.908-22.10113.365-15.6615.715-20.2814.973-13.4297.689-18.71316.578-11.2289.947-17.19718.145-10.31810.887-15.5519.575-9.3311.745-13.78520.856-8.27112.514-11.91521.978-7.14913.187-9.95422.933-5.97213.76-7.91723.713-4.7514.228-5.8224.313-3.49214.588-3.67924.728-2.20814.837-1.5124.954-0.90614.9730.67