機(jī)械原理內(nèi)燃機(jī)課程設(shè)計(jì)報告書

..機(jī)械原理課程設(shè)計(jì)說明書設(shè)計(jì)題目：內(nèi)燃機(jī)結(jié)構(gòu)設(shè)計(jì)及其運(yùn)動分析XX航空航天大學(xué)機(jī)電學(xué)院0008301班010811011學(xué)號設(shè)計(jì)者陳炎指導(dǎo)教師陸俊華20XX5月30日目錄第1章設(shè)計(jì)要求1.1設(shè)計(jì)題目…………………<2>1.2機(jī)構(gòu)示意圖………………<2>1.3原始數(shù)據(jù)…………………<3>齒輪機(jī)構(gòu)傳動設(shè)計(jì)2.1機(jī)構(gòu)傳動比……………<4>2.2齒輪變位系數(shù)的選擇…………………<4>2.3齒輪基本參數(shù)的計(jì)算…………………<4>2.4主要計(jì)算結(jié)果…………<9>連桿機(jī)構(gòu)設(shè)計(jì)和運(yùn)動分析3.1桿件尺寸確定…………<10>3.2解析法分析機(jī)構(gòu)運(yùn)動…………………<10>3.3圖解法分析機(jī)構(gòu)的三個瞬時位置……<12>第4章凸輪機(jī)構(gòu)設(shè)計(jì)4.1解析法分析凸輪運(yùn)動…………………<13>4.2解析法求凸輪理論輪廓曲線…………<16>4.3解析法求凸輪實(shí)際輪廓曲線…………<18>附錄A電算源程序<MATLAB附錄B圖解法分析連桿機(jī)構(gòu)附錄C圖解法分析凸輪輪廓曲線參考文獻(xiàn)第1章設(shè)計(jì)要求1.1設(shè)計(jì)題目內(nèi)燃機(jī)機(jī)構(gòu)設(shè)計(jì)及其運(yùn)動分析1.2機(jī)構(gòu)示意圖該機(jī)構(gòu)由氣缸〔機(jī)架中活塞〔滑塊B驅(qū)動曲柄,曲柄軸上固聯(lián)有齒輪1,通過齒輪2驅(qū)動凸輪上齒輪3,凸輪控制配氣閥推桿運(yùn)動。1.3原始數(shù)據(jù)方案號：一活塞沖程H：215mm齒輪轉(zhuǎn)速Q(mào)UOTE:650rpm齒輪QUOTE:20齒輪QUOTE:15齒輪QUOTE:40模數(shù)m:4mm距離QUOTE:70mm距離QUOTE:110mm基圓半徑QUOTE:35mm升程角QUOTE\deg：55遠(yuǎn)休止角QUOTE\deg：5回程角QUOTE\deg：55近休止角QUOTE\deg：245汽閥沖程h：10mm齒輪參數(shù)：壓力角QUOTE,齒頂高系數(shù)QUOTE頂隙系數(shù)QUOTE。氣閥推桿運(yùn)動規(guī)律：升程和回程均為簡諧運(yùn)動。第2章齒輪機(jī)構(gòu)傳動設(shè)計(jì)2.1機(jī)構(gòu)傳動比2.2齒輪變位系數(shù)的選擇由于齒輪2的齒數(shù)為15,小于標(biāo)準(zhǔn)齒輪不發(fā)生根切的最少齒數(shù)17,因此需要變位。取,2.3齒輪基本參數(shù)的計(jì)算嚙合角標(biāo)準(zhǔn)中心距實(shí)際中心距中心距變位系數(shù)齒高變動系數(shù)分度圓半徑與節(jié)圓半徑相等基圓半徑分度圓的齒厚齒頂圓半徑齒根圓半徑齒頂圓上的壓力角重合度小齒輪〔齒輪2的齒頂厚2.4主要計(jì)算結(jié)果計(jì)算項(xiàng)目計(jì)算結(jié)果計(jì)算項(xiàng)目計(jì)算結(jié)果34.46mm083.99mm0.1176535mm050.94mm75mm1.471.5543.988mm2.4第3章連桿機(jī)構(gòu)設(shè)計(jì)和運(yùn)動分析ssL1O1ABL23.1桿件尺寸確定由于活塞的沖程H=215mm,偏心距e=0則：,取QUOTE3.2解析法分析機(jī)構(gòu)運(yùn)動〔1位移：QUOTE<其中l(wèi)為107.5mm>〔2速度對上式求導(dǎo)得〔〔3加速度對上式求導(dǎo)得3.3圖解法分析機(jī)構(gòu)的三個瞬時位置〔見附錄第4章凸輪機(jī)構(gòu)設(shè)計(jì)4.1解析法分析凸輪運(yùn)動推程時回程時〔1推程：<2>遠(yuǎn)休：〔3回程：QUOTE〔4近休止：QUOTEQUOTEQUOTE;4.2解析法求凸輪理論輪廓曲線滾子半徑取5mm滾子中心處于B點(diǎn)的直角坐標(biāo)其中e=0,=35mm,=35mm〔1推程：〔2遠(yuǎn)休：<3>回程：QUOTE<4>近休止：4.3實(shí)際輪廓曲線的計(jì)算<1>推程：<2>遠(yuǎn)休：<3>回程：QUOTE<4>近休止時即QUOTE時理論輪廓數(shù)據(jù)：x0-3.0681-6.2155-9.5053-12.9704-16.6040-20.3558Y35.000035.068635.249935.474335.635935.607435.2573-24.1344-27.8162-31.2586-34.3168-36.8618-38.9711-40.600334.467533.150031.258628.795325.810922.500018.9322-41.5403-41.7998-41.4378-40.5567-39.2884-37.7786-36.167815.119411.20027.30663.54820.0000-3.3052-6.3774-34.5741-33.0796-31.7208-30.3109-28.6703-26.8116-24.7487-9.2641-12.0400-14.7916-17.5000-20.0752-22.4976-24.7487-22.4976-20.0752-17.5000-14.7916-11.9707-9.0587-6.0777-26.8116-28.6703-30.3109-31.7208-32.8892-33.8074-34.4683-3.0505-0.00003.05056.07779.058711.970714.7916-34.8668-35.0000-34.8668-34.4683-33.8074-32.8892-31.720817.500020.075222.497624.748726.811628.670330.3109-30.3109-28.6703-26.8116-24.7487-22.4976-20.0752-17.500031.720832.889233.807434.468334.866835.000034.8668-14.7916-11.9707-9.0587-6.0777-3.0505-0.00003.050534.468333.807432.889231.720830.310928.670326.81166.07779.058711.970714.791617.500020.075222.497624.748722.497620.075217.500014.791611.97079.058724.748726.811628.670330.310931.720832.889233.80746.07773.0505034.468334.866835.0000實(shí)際輪廓數(shù)據(jù)：x0-3.2828-6.5541-9.8201-13.0952-16.3776-19.6336y30.000030.073230.261430.484230.637530.612530.3097-22.7967-25.7784-28.4856-30.8358-32.7661-34.6410-35.876229.649828.584127.098025.206122.943120.000017.2941-36.5976-36.8005-36.5061-35.7674-34.6658-33.3012-31.778314.364611.28308.13024.98461.9057-1.0797-3.9831-30.1961-28.6429-27.1892-25.9808-24.5746-22.9813-21.2132-6.8490-9.7342-12.6785-15.0000-17.2073-19.2836-21.2132-19.2836-17.2073-15.0000-12.6785-10.2606-7.7646-5.2094-22.9813-24.5746-25.9808-27.1892-28.1908-28.9778-29.5442-2.6147-0.00002.61475.20947.764610.260612.6785-29.8858-30.0000-29.8858-29.5442-28.9778-28.1908-27.189215.000017.207319.283621.213222.981324.574625.9808-25.9808-24.5746-22.9813-21.2132-19.2836-17.2073-15.000027.189228.190828.977829.544229.885830.000029.8858-12.6785-10.2606-7.7646-5.2094-2.6147-0.00002.614729.544228.977828.190827.189225.980824.574622.98135.20947.764610.260612.678515.000017.207319.283621.213219.283617.207315.000012.678510.26067.764621.213222.981324.574625.980827.189228.190828.97785.20942.6147-0.000029.544229.885830.0000附錄A電算源程序<MATLAB>1滑塊機(jī)構(gòu)的位移程序x=[0:0.1:360];s=107.5*cos<x*pi/180>+107.5*sqrt<4-<sin<x*pi/180>>.^2>;plot<x,s>;2>滑塊機(jī)構(gòu)的速度程序x=[0:0.01:360];v=0-107.5*68.0333333*<sin<x*pi/180>+0.5*sin<2*x*pi/180>>./sqrt<4-<sin<x*pi/180>>.^2>;plot<x,v>;3>滑塊機(jī)構(gòu)的加速度程序x=[0:0.001:360];y1=cos<2*x*pi/180>;y2=4-<sin<x*pi/180>>.^2;y3=<sin<2*x*pi/180>>.^2;y4=y2.^1.5;y=0-107.5*68.03333^2*<cos<x*pi/180>+<y1.*y2-0.25*y3>./y4>;plot<x,y>;4>凸輪滾子中心位移程序x=[0:0.0001:150];a=5*<1-cos<pi*x/55>>.*<0<x&x<55>;b=0*<55<x&x<60>;c=5*<1+cos<pi*<x-60>/55>>.*<60<x&x<115>;d=0*<115<x&x<150>;y=a+b+c+d;plot<x,y>;5>凸輪滾子中心速度程序x=[0:0.0001:150];a=557*sin<pi*x/55>.*<0<x&x<55>;b=0*<55<x&x<60>;c=557*sin<pi*<x-60>/55>.*<60<x&x<115>;d=0*<115<x&x<150>;v=a+b+c+d;plot<x,v>;6>凸輪滾子中心加速度程序x=[0:0.0001:150];a=61981*cos<pi*x/55>.*<0<x&x<55>;b=0*<55<x&x<60>;c=0-61981*cos<pi*<x-60>/55>.*<60<x&x<115>;d=0*<115<x&x<150>;y=a+b+c+d;plot<x,y>;〔7>凸輪理論和實(shí)際輪廓曲線程序z=[0:0.0001:360];a=sin<z*pi/180>;b=cos<z*pi/180>;x1=<0-40+5*cos<pi*z/55>>.*a.*<0<=z&z<55>;y1=<40-5*cos<pi*z/55>>.*b.*<0<=z&z<55>;x2=0-45*a.*<55<=z&z<60>;y2=45*b.*<55<=z&z<60>;x3=<0-40-5*cos<pi*<z-60>/55>>.*a.*<60<=z&z<115>;y3=<40+5*cos<pi*<z-60>/55>>.*b.*<60<=z&z<115>;x4=0-35*a.*<115<=z&z<360>;y4=35*b.*<115<=z&z<=360>;x=x1+x2+x3+x4;y=y1+y2+y3+y4;plot<x,y>;holdon;dx1=<<0-40+5*cos<pi*z/55>>.*b-180*5*sin<pi*z/55>.*a/55>.*<0<=z&z<55>;dy1=<<0-40+5*cos<pi*z/55>>.*a+180*5*sin<pi*z/55>.*b/55>.*<0<=z&z<55>;dx2=<0-45*b>.*<55<=z&z<60>;dy2=<0-45*a>.*<55<=z&z<60>;dx3=<<0-40-5*cos<pi*<z-60>/55>>.*b+180*5*sin<pi*<z-60>/55>.*a/55>.