壓床機械設(shè)計.

1、東北大學(xué)機械原理課程設(shè)計設(shè)計題目機械原理課程設(shè)計說明書題目：壓床機械設(shè)計班級：機械1305姓名：楊建學(xué)號：20133005指導(dǎo)教師：李翠玲成績：2015 年 11月 9日1 .設(shè)計題目 12. 設(shè)計要求12.1設(shè)計要求 12.2設(shè)計數(shù)據(jù)23. 機構(gòu)運動尺寸設(shè)計 4. 機構(gòu)的結(jié)構(gòu)分析5. 機構(gòu)的運動分析 5.1運動分析虛參實參對照表5.2運動分析的主程序清單 5.3運動分析的運行結(jié)果 6. 機構(gòu)的動態(tài)靜力分析 6.1動態(tài)靜力分析虛參實參對照表6.2動態(tài)靜力分析的主程序清單 6.3工藝阻力函數(shù)程序清單 6.4動態(tài)靜力分析的運行結(jié)果7. 主要的收獲和建議參考文獻3東北大學(xué)機械原理課程設(shè)計設(shè)計題目1.

2、 設(shè)計題目壓床機械設(shè)計壓床機械是由六桿機構(gòu)中的沖頭（滑塊）向下運動來沖壓機械零件的。圖1為其參考示意圖，其執(zhí)行機構(gòu)主要由連桿機構(gòu)和凸輪機構(gòu)組成，電動機經(jīng)過減速傳動裝置（齒 輪傳動）帶動六桿機構(gòu)的曲柄轉(zhuǎn)動，曲柄通過連桿、搖桿帶動滑塊克服阻力F沖壓零件。 當(dāng)沖頭向下運動時，為工作行程，沖頭在 0.75H內(nèi)無阻力；當(dāng)在工作行程后0.25H行程 時，沖頭受到的阻力為F;當(dāng)沖頭向上運動時，為空回行程，無阻力。在曲柄軸的另一 端，裝有供潤滑連桿機構(gòu)各運動副的油泵凸輪機構(gòu)。（a）機械系統(tǒng)示意圖Frnax(L25EIW（b ）沖頭阻力曲線圖（c）執(zhí)行機構(gòu)運動簡圖圖1壓床機械參考示意圖2. 設(shè)計要求2.1設(shè)計要

3、求電動機軸與曲柄軸垂直，使用壽命 10年，每日一班制工作，載荷有中等沖擊，允 許曲柄轉(zhuǎn)速偏差為土 5%。要求凸輪機構(gòu)的最大壓力角應(yīng)在許用值a之內(nèi)，從動件運動規(guī)律見設(shè)計數(shù)據(jù)，執(zhí)行構(gòu)件的傳動效率按0.95計算，按小批量生產(chǎn)規(guī)模設(shè)計2.2設(shè)計數(shù)據(jù)題號12345678910機構(gòu)運動分析轉(zhuǎn)速 n2 (r/min)95929088909295908890距離xi (mm)50404040305040404540距離X2 (mm)140170200135140190150180145160距離y (mm)160180180160160200140180170175沖頭行程H (mm)150180210140

4、150200160190170165上極限角i( °120120120120120120120120120120下極限角2()60606060606060606060機構(gòu) 動態(tài) 靜力 分析工作阻力Fmax(N)4300460041004500420038004200440043004500連桿3質(zhì)量m3 (kg)60646870727476808284連桿3質(zhì)心轉(zhuǎn)動慣量Js3 (kg m2)0.210.240.280.300.350.380.400.420.460.33滑塊6質(zhì)量m6 (kg)34363840403632305045搖桿4質(zhì)量m3 (kg)40506060506045

5、556550搖桿4質(zhì)心轉(zhuǎn)動慣量Js4 (kg m2)0.20.220.240.260.220.30.250.320.280.23機構(gòu)運動尺寸設(shè)計5東北大學(xué)機械原理課程設(shè)計設(shè)計題目已知條件：如圖：H=170mm,X45mm,y=170mm2X145mm上下極限角分別為 60°、120° , Lc=0.5L BO。由條件可知：ZC04G=600，CiC4=C204，所以 MQG是等邊三角形，所以Lco4 =H=170mm。LcB=H/3=56.67mm LBQ=2H/3=113.33mm Lbia=L B2A2,L A2Q=La1Q。(L_BiAi LajO2)- ；2 二 L

6、biE- ；2 Lc2E- ；2(L B1A1 - LA1O2)丄 2 = LB?/-'”? LO2FJ“2Lbiai+Lao2= v(L bioCOs60 +170) +(L Bio4sin60 -45)=V(170 V3/3-45) 2+(170+170/3) 2=232.82mm22同理可得：Lbiai-Lao2=V(170 V3/3-45) +(170-170/3) =125.18mm 所以：LBA=179mm LAO2=53.82mmLcd=(0.25 - 0.35)L cq4,所以取 LcD=51mm7東北大學(xué)機械原理課程設(shè)計設(shè)計題目3. 機構(gòu)的結(jié)構(gòu)分析主動件RRRRRP8

7、東北大學(xué)機械原理課程設(shè)計設(shè)計題目#東北大學(xué)機械原理課程設(shè)計設(shè)計題目4. 機構(gòu)的運動分析5.1運動分析虛參實參對照表Barkn1n2n3kr1r2gamtwepvpap1201r120.00.0twepvpapRrrkmn1n2n3k1k2r1r2twepvpap124323r23r34twepvpapBarkn1n2n3kr1r2gamtwepvpap450P 3r450.00.0P twepvpapRrpkmn1n2n3k1k2k3r1r2vr2ar2twepvpap-1576456R56&r2&vr2&ar2twepvpapBarkn1n2n3kr1r2gamtwe

8、pvpap20820.0r280.0P twepvpapBarkn1n2n3kr1r2gamtwepvpap4 H0930.0r490.0twepvpap5.2運動分析的主程序清單/* Note:Your choice is C IDE */#i nclude "subk.c"#i nclude "draw.c"mai n()static double p202,vp202,ap202,del;staticdoublet10,w10,e10,pdraw370,vpdraw370,apdraw370,wdraw370,edraw370;static int

9、 ic;double r12,r34,r23,r56,r45;double pi,dr;double r2,vr2,ar2;int i;FILE *fp;char *m="p","vp","ap"r12=0.05382;r34=0.113;r23=0.179;r56=0.051;r45=0.17;t6=90.0;w6=0.0;e6=0.0;e1=0.0;w1=9.2;del=10.0;p11=0.0;p12=0.0;p41=0.045;p42=0.17;p61=-0.1;p71=-0.1;p72=-0.8;pi=4.0*ata n(1

10、.0);dr=pi/180.0;t6=90.0*dr;prin tf("n 20133005n");prin tf("No THETA1 S5 V5 A5 w3e3n");printf(” degm m/s m/s/sradia n/sradia n/s/s n");if(fp=fope n("fil","w")=NULL)prin tf("Ca n't open this file.n");exit(0);fprin tf(fp,"n20133005n")

11、;fprin tf(fp,"NoTHETA1 S5 V5 A5 w3e3n");fprin tf(fp,"degm m/s m/s/s radia n/s radia n/s/s");ic=(i nt)(360.0/del);for(i=0;i<=ic;i+)t1=(i)*del*dr;bark(1,2,0,1,r12,0.0,0.0,t,w,e,p,vp,ap); rrrk(1,2,4,3,2,3,r23,r34,t,w,e,p,vp,ap);bark(4,5,0,3,r45,0.0,0.0,t,w,e,p,vp,ap);rrpk(-1,5,7,

12、6,4,5,6,r56，&r2,&vr2,&ar2,t,w,e,p,vp,ap);prin tf("n%2d %8.3f %8.3f %8.3f %8.3f %8.3f %8.3f",i+1,t1/dr,p62,vp62, ap62, w3,e3);fprin tf(fp,"n%2d %8.3f %8.3f %8.3f %8.3f %8.3f %8.3f",i+1,t1/dr,p 62,vp 62,ap 62,w3,e3);pdrawi=p62;vpdrawi=vp62;apdrawi=ap 6 2;wdrawi=w3;edraw

13、i=e3;if(i%16)=0)getch();fclose(fp);getch(); draw1(del,pdraw,vpdraw,apdraw,ic,m); draw2(del,wdraw,edraw,ic,m);5.3運動分析的運行結(jié)果20133005NoTHETA1S5V5A5w3e3degmm/sm/s/sradia n/sradia n/s/s10.0000.0710.6526.614-3.614-32.657210.0000.0840.7746.151-4.240-33.114320.0000.100.8784.635-4.857-31.394430.0000.1170.9431

14、.999-5.406-25.578540.0000.1350.951-1.169-5.788-13.483650.0000.1530.901-4.010-5.8696.144760.0000.1690.802-6.341-5.51731.586870.0000.1830.661-8.502-4.67056.975980.0000.1940.481-10.380-3.40574.6421090.0000.2010.273-11.291-1.91680.20211100.0000.2040.062-10.765-0.43075.03112110.0000.204-0.128-9.1060.8926

15、3.79213120.0000.200-0.282-7.0941.98050.82114130.0000.193-0.399-5.3612.82638.61615140.0000.185-0.488-4.1523.45628.09716150.0000.175-0.560-3.4303.90319.31717160.0000.164-0.620-3.0064.19811.98218170.0000.151-0.674-2.6234.3645.72819180.0000.138-0.718-2.0104.4200.22720190.0000.124-0.748-0.9864.376-4.7712

16、1200.0000.110-0.7530.4224.241-9.42322210.0000.096-0.7301.9904.020-13.79123220.0000.082-0.6793.4273.720-17.84124230.0000.070-0.6034.5103.346-21.45725240.0000.060-0.5105.1402.910-24.47226250.0000.051-0.4105.3372.423-26.73227260.0000.044-0.3105.2051.901-28.15628270.0000.039-0.2144.8951.359-28.79429280.

17、0000.036-0.1254.5590.812-28.82130290.0000.034-0.0404.3240.268-28.50131300.0000.0340.0414.267-0.269-28.11932310.0000.0360.1234.418-0.800-27.92933320.0000.0390.2104.771-1.331-28.11634330.0000.0440.3055.285-1.870-28.77835340.0000.0510.4115.877-2.426-29.90436350.0000.0590.5276.402-3.007-31.33037360.0000

18、.0710.6526.614-3.614-32.657snax 0.133B93'B. 950G31amsx ill.2912935. 機構(gòu)的動態(tài)靜力分析6.1動態(tài)靜力分析虛參實參對照表Rrpfn1n2n3ns1ns2nn1nn2n exfk1k2Pvpaptwefr51060606645PvpaptwefrRrrfn1n2n3ns1ns2nn1nn2n exfk1k2pvpaptwefr4239850032pvpaptwefrBarfn1ns1nn1k1papefrtb1121papefr&tb6.2動態(tài)靜力分析的主程序清單/* Note:Your choice is C I

19、DE */#i nclude "subk.c"#in clude "subf.c"#i nclude "draw.c"mai n()static double p202,vp202,ap202,del;doublestatic double t10,w10,e10,tbdraw370,tb1draw370;staticSita1370,fr1draw370,sita2370,fr2draw370,sita3370,fr3draw370,fr3,bt3;static double fr202,fe202,tb,tb1,fr1,bt1,f

20、r4,bt4,we1,we2,we3,we4;static int ic;double r12,r34,r23,r56,r45,r49,r28,WEmax=0,we,TBmax,TBmi n;double pi,dr;double r2,vr2,ar2;int i;FILE *fp;char *m="tb","tb1","fr1","fr2"sm2=82.0;sm3=65.0;sm5=50.0;sj2=0.46;sj3=0.28;r12=0.05382;r34=0.113;r23=0.179;r56=0.051;r

21、45=0.17;r49=0.085;r28=0.0895; t6=90.0;w6=0.0;e6=0.0;e1=0.0;w1=9.2;del=15.0;p11=0.0;p12=0.0;p41=0.045;p42=0.17;p61=-0.1;p71=-0.1;p72=-0.8;pi=4.0*ata n(1.0);dr=pi/180.0;t6=90.0*dr;prin tf("n 20133005n");prin tf("No HETA1 fr1 sita1 fr4 sita4 tb tb1we4n");printf(” degNradia nNradia n

22、N.mN.m W");if(fp=fope n("filel","w")=NULL)prin tf("Ca n't open this file.n");exit(O);fprin tf(fp,"n20133005n");fprin tf(fp,"No HETA1fr1 sita1 fr4 sita4 tb tb1 We n");fprin tf(fp," deg Nradia nN radia n N.mN.m W ");ic=(i nt)(360.0/d

23、el);for(i=0;i<=ic;i+)t1=(i)*del*dr;bark(1,2,0,1,r12,0.0,0.0,t,w,e,p,vp,ap);rrrk(1,2,4,3,2,3,r23,r34,t,w,e,p,vp,ap);bark(4,5,0,3,r45,0.0,0.0,t,w,e,p,vp,ap);rrpk(-1,5,7,6,4,5,6,r56，&r2,&vr2,&ar2,t,w,e,p,vp,ap);bark(2,0,8,2,0.0,r28,0.0,t,w,e,p,vp,ap);bark(4,0,9,3,0.0,r49,0.0,t,w,e,p,vp,a

24、p);rrpf(5,10,6,0,6,0,6,6,4,5,p,vp,ap,t,w,e,fr);rrrf(4,2,3,9,8,5,0,0,3,2,p,vp,ap,t,w,e,fr);barf(1,1,2,1,p,ap,e,fr, &tb);fr仁 sqrt(fr11*fr11+fr12*fr12);bt仁 ata n2(fr12,fr11);fr4=sqrt(fr41*fr41+fr42*fr42);bt4=ata n2(fr42,fr41);we1=-(ap81*vp81+( ap82+9.81)*vp82)*sm2-e2*w2*sj2; we2=-(ap91*vp91+( ap92+

25、9.81)*vp92)*sm3-e3*w3*sj3; extf(p,vp,ap,t,w,e,6,fe);we3=-(ap62+9.81)*vp 6 2*sm5+fe 62*vp62;we4=fabs(tb*w1);tb1=-(we1+we2+we3)/w1;if(WEmax<we4)WEmax=we4;if(TBmaxvtb)TBmax=tb;if(TBmi n>tb)TBmi n=tb;if(fabs(TBmi n)>TBmax)TBmax=TBmi n;prin tf("n%2d %8.3f %8.3f %8.3f %8.3f %8.3f %8.3f %8.3f

26、 %8.3f",i+1,t1/ dr,fr1,bt1/dr,fr4,bt4/dr,tb,tb1,we4);fprin tf(fp,"n%2d %8.3f %8.3f %8.3f %8.3f %8.3f %8.3f %8.3f %8.3f",i+1,t 1/dr,fr1,bt1/dr,fr4,bt4/dr,tb,tb1,we4);tbdrawi=tb;tb1drawi=tb1;fr1drawi=fr1;sita1i=bt1;fr2drawi=fr4;sita2i=bt4;fr3drawi=fr4;sita3i=bt4;if(i%16)=0)getch();prin

27、tf("n WEmax=%10.3f W TBmax=%10.3f N.m",WEmax,TBmax); fprin tf(fp,"n WEmax=%10.3f W TBmax=%10.3f N.m",WEmax,TBmax ); fclose(fp);getch();draw2(del,tbdraw,tb1draw,ic,m); draw3(del,sita1,fr1draw,sita2,fr2draw,sita3,fr3draw,ic,m);6.3工藝阻力函數(shù)程序清單extf(p,vp,ap,t,w,e, nexf,fe)double p202,vp

28、202,ap202,t10,w10,e10,fe202;int n exf;fen exf1=0.0;if(p nexf2<0.077&&vp nexf2<0)fen exf2=4300.0; elsefe nexf2=0.0;6.4動態(tài)靜力分析的運行結(jié)果20133005No HETA1fr1sita1fr4 sita4 tbtb1 WeA/degNradia nNradia nN.mN.mW10.000 3151.614127.738 1482.4854.924134.138134.138 1234.070215.000 3222.070128.610 1608.

29、7650.318158.896158.896 1461.847330.000 2906.565127.240 1555.755-3.718155.184155.184 1427.692445.000 2195.406123.445 1251.921-7.245115.762115.762 1065.011560.000 1267.813117.495637.016-5.78357.54557.545529.412675.000 335.403107.622273.951105.1639.7319.73189.530790.00095.046-50.909667.434128.371-3.226

30、-3.22629.6758105.000 194.93184.212550.039126.422-3.723-3.72334.2569120.000 722.81890.916248.946118.029-18.910-18.910173.97210135.000 1147.97089.54374.06369.283-44.035-44.035405.12011150.000 1426.80188.21694.1294.218-67.666-67.666622.52412165.000 1635.23487.692118.202-7.411-85.858-85.858789.89213180.000 1854.60788.163117.695-19.210-99.764-99.764917.82614195.000 2138.41889.5