機(jī)械設(shè)計(jì)課程設(shè)計(jì)

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機(jī)械設(shè)計(jì)(機(jī)械設(shè)計(jì)基礎(chǔ))

課程設(shè)計(jì)說明書

設(shè)計(jì)題目雙級(jí)斜齒輪減速器

山東大學(xué)機(jī)械工程學(xué)院機(jī)械制造及其自動(dòng)化專業(yè)

班級(jí)學(xué)號(hào)設(shè)計(jì)人彭

指導(dǎo)老師張

完成日期2023年1月13日

由于時(shí)間倉促，設(shè)計(jì)過程難免有錯(cuò)誤，若您有時(shí)間可將錯(cuò)誤發(fā)至yanke_007@，十分感謝。

目錄

一、設(shè)計(jì)任務(wù)書錯(cuò)誤！未定義書簽。

(一）設(shè)計(jì)任務(wù)錯(cuò)誤！未定義書簽。（二）原始數(shù)據(jù)錯(cuò)誤！未定義書簽。（三）工作條件錯(cuò)誤！未定義書簽。二、傳動(dòng)總體方案設(shè)計(jì)錯(cuò)誤！未定義書簽。（一）平面布置簡(jiǎn)圖：錯(cuò)誤！未定義書簽。（二）運(yùn)輸帶功率：錯(cuò)誤！未定義書簽。（三）確定電動(dòng)機(jī)型號(hào)：4(四)計(jì)算各級(jí)傳動(dòng)比和效率：5（五）計(jì)算各軸的轉(zhuǎn)速功率和轉(zhuǎn)矩：5三、V帶傳動(dòng)設(shè)計(jì)計(jì)算7四、齒輪傳動(dòng)設(shè)計(jì)9（一）對(duì)高速齒輪設(shè)計(jì):i=4.059（二）對(duì)低速速齒輪設(shè)計(jì):i=3.117五、軸的設(shè)計(jì)-19-六、軸承的選擇與設(shè)計(jì)33七、鍵聯(lián)接的設(shè)計(jì)34八、聯(lián)軸器的計(jì)算與設(shè)計(jì)37九減速器潤滑方式，潤滑油牌號(hào)及密封方式的選擇38十、課程體會(huì)與小結(jié)42十一、

軸VI：nVI?3、輸出轉(zhuǎn)矩：

nV79.365??42.305r/mini鏈1.876軸I：TI?9550?PI3.810?9550??25.268N?mmnI1440PII3.620?9550??43214N?mmnII800

軸II：TII?9550?軸III：TIII?9550?PIII3.476?9550??149568N?mmnIII222.222軸IV：TIV?9550?PIV3.338?9550??401725N?mmnIV79.365軸V：TV?9550?PV3.282?9550??394509N?mmnV79.365PVI2.989?9550??674734N?mmnVI42.305IIIIIIVVVI軸VI：TVI?9550?軸號(hào)參數(shù)輸入功率P(Kw)轉(zhuǎn)速n(r/min)輸入轉(zhuǎn)矩T(N·mm)

I3.8103.6203.4763.3383.2822.9891440800222.22279.36579.36542.3052526843214149568401725394509674734

三、V帶傳動(dòng)設(shè)計(jì)計(jì)算

計(jì)算項(xiàng)目工作狀況系數(shù)計(jì)算功率選帶型小帶輪直徑取滑動(dòng)率大帶輪直徑大帶輪轉(zhuǎn)速計(jì)算帶長求DmDm?n2?計(jì)算內(nèi)容由表11.5Pc=KAP0=1.2x3.810kw由圖11.15由表11.6計(jì)算結(jié)果KA=1.2Pc=4.572kwA型D1=100mm??1%D2=（1??）D1n1n2(1??)D1n1100?1440?0.99?720D2=178mm100?1440200D2?0.99?n2=720r/minD2?D1求△初取中心距帶長L基準(zhǔn)長度Ld求中心距和包角中心距a小輪包角

2178?100??139mm2?178?100?39mm2??D2?D120.7(D1+D2)求帶根數(shù)帶速傳動(dòng)比v??D1n160?100?v=7.54m/s??0.1?144060?100i=1.797n1440i?1??1.797n2801由表11.8Po=1.306由表11.7帶根數(shù)求軸上載荷張緊力軸上載荷V帶尺寸頂寬b節(jié)寬bp高度h帶質(zhì)量q輪轂尺寸參數(shù)帶寬BK?=0.98取Z=4根Fo=123.2N由表11.2KL=0.96由表11.16△Po=0.168Z?Pc(P??Po)K?KL4.572??3.30(1.306?0.168)?0.98?0.96F0?500?2.5?K??2???qv??K????2.5?0.98?4.572??500????0.1?7.542??7.54?4?0.98?PvZ由表11.4q=0.17kg/mFQ?2ZF0sin?2170.32FQ=982.1Nb=13mmbp=11mmh=8mmq=0.1lg/mB=65mm?2?4?123.2?sin表11.4B=(Z-1)?e+2f=(3-1)?15+20

四、齒輪傳動(dòng)設(shè)計(jì)

（一）對(duì)高速齒輪設(shè)計(jì):i=3.600

計(jì)算項(xiàng)目選材大齒輪小齒輪齒面轉(zhuǎn)矩T齒寬系數(shù)45鋼調(diào)質(zhì)硬度240HB40Cr調(diào)質(zhì)硬度240+20=260HB齒面接觸疲乏強(qiáng)度計(jì)算計(jì)算內(nèi)容計(jì)算結(jié)果T1?9.55?106i?12P13.620?9.55?106?n18013.6?1?0.32T1?43160N?mm?d??a??d?0.69接觸疲乏極限?Hlim初步計(jì)算許用接觸應(yīng)力由圖12.17C，小齒輪為合金鋼，大齒輪為碳鋼?Hlim1?710MPa?Hlim2?580MPaH1Hlim1????0.9?????0.9?H2?0.9?710?0.9?580[?H[?Hlim1]?576MPa]?522MPa???HHlim2lim2Ad值初步計(jì)算小輪直徑初步計(jì)算齒寬b校核計(jì)算圓周速度v

由表12.16估計(jì)??140取Ad?90Ad?90取d1?62mmb=43mmd1?Ad3?90?3T1?d??H?2?u?1u431603.600?1??59.8mm23.6000.69?522b??d?d1?0.69?62v??d1n160?1000???62?80160?1000v?2.60m/s

齒數(shù)Z模數(shù)m螺旋角?取Z1=24，Z2=i×Z1=86Z1=24Z2=86mt=2.583mn=2.5mt?d1/Z1?62/24由表12.3mn=2.5??arccos使用系數(shù)KA使用系數(shù)KV齒間載荷分系數(shù)由表12.9由圖12.9mn2.5?arccosmt2.583??14o35'33''KA=1.25KV=1.15KH?

由表12.10先求Ft?2T1d12?43160??1392N62KAFt1.25?1392??40.47N/mm?100N/mmb43?a??1.88?3.2?????11?????cos??Z2???Z1???1.654??11??0'''???1.88?3.2??cos143533??2486?????????bsin??dZ1?tan??mn??tan143533o'''???1.3790.69?24?r???????1.654?1.379?t?arctantan?ncos??r?3.033tan20oo'''?arctan?203641cos14o35'33''cos?b?cos?cos?n/cos?t?cos143533/cos203641?0.972o'''o'''

齒向載荷分布系數(shù)由此得KH??KF????/cos2?b?1.654/0.9722KH??1.752KH?載荷系數(shù)彈性系數(shù)節(jié)點(diǎn)區(qū)域系數(shù)重合度系數(shù)螺旋角系數(shù)接觸最小安全系數(shù)工作時(shí)間th應(yīng)力循環(huán)次數(shù)由表12.11非對(duì)稱分布KH??b?b?3??A?B?[1??]()2?C?10b?d1?d1???32?1.09?0.16?(1?0.6?0.692)?0.692?0.31?10?40KH??1.201K=3.03K?KAKVKH?KH??1.25?1.15?1.752?1.201由表12.12由圖12.16由式12.31因???1取???1故ZE?189.8MPaZH?2.43Z??Z??4????1????????3??cos??cos14o35'33''1/???1/1.654Z??0.77Z??0.984由表12.14，一般可靠度，取SHlim?1.05假定工作時(shí)間七年,每年工作300天，雙班制,則有SHlim?1.05th?33600hth?7?300?8?2NL1?60rntn?60?1?801?336009NL2?NL1/i?1.61?10NL1?1.61?109NL接觸壽命系數(shù)NL2?4.49?1083.600由圖12.18Zn1?0.97Zn2?1.08Zn許用接觸應(yīng)力???H1H2?Z710?0.97?Hlim1n1?SHlim1.05?Hlim2Zn2580?1.08?SHlim1.05???H????????656MPa????597MPaH1H2

驗(yàn)算重新選擇Ad值初步計(jì)算小輪直徑初步計(jì)算齒寬b校核計(jì)算圓周速度v齒數(shù)Z模數(shù)m螺旋角?使用系數(shù)KA使用系數(shù)KV?H?ZEZHZ?Z?2KT1u?1?2ubd1?189.8?2.43?0.78?0.9842?3.03?431603.600?1?40?6223.600?H?503MPa

軸的結(jié)構(gòu)化對(duì)軸III進(jìn)行設(shè)計(jì)初定軸長：根據(jù)指導(dǎo)書5-1圖所給出的參數(shù)初定主動(dòng)軸的長度如后圖所示：1、左軸承中心到低速級(jí)小齒輪中心的距離：L1?E22?20/2?10?15?66/2?68?D?a?b32、低速級(jí)小齒輪中心到高速級(jí)大齒輪中心的距離：L2??b32?c?b22取L1=70mm取L2=70mm取L3=58mm6640?15??68223、高速級(jí)大齒輪中心到右軸承中心的距離：L3?b2224520??15?10??57.522?a?D?E

斜齒螺旋角齒輪直徑小齒輪3受力轉(zhuǎn)矩圓周力徑向力軸向力大齒輪2受力轉(zhuǎn)矩圓周力徑向力軸向力畫軸受力圖計(jì)算支承反力水平面反力垂直面反力

由此前計(jì)算結(jié)果可知T3=TIII?1?11o51'06''?2?121910d2=201.802mmd3=79.838mmo'''T3=149568N·mm0Ft3?2T3/d3?2?149568/79.838o'''Fr3?Ft3tan?n/cos?2?3747?tan20/cos121910F?1396Nr3F?3?818NF?Ftan?2?3747?tan12o19'10''?3t3Ft3?3747NT2=TIIIT2=149568N·mmFt2?2T2/d2?2?149568/201.802Ft2?1482NFr2?Ft2tan?n/cos?1?1482?tan200/cos11o51'06''Fr2?551NF?2?311No'''F?2?Ft2tan?1?1482?tan115106圖形如后頁d3d?Fa2?2?Fr2?L322FR'4?19879.838201.8021396?70?818??311??551?5822?198FR'3?Fr3?FR'4?Fr2?1396?655?551Fr3?L1?Fa3?FR'4?655NF'R3?190NFt3?128?Ft2?583747?128?1482?58''FR3??198198'F\R4?Ft3?Ft2?FR'3?3747?1482?2856'FR'3?2856NF''R4?2373N

許用應(yīng)力許用應(yīng)力值應(yīng)力校正系數(shù)當(dāng)量轉(zhuǎn)矩當(dāng)量彎矩軸材料為45鋼調(diào)質(zhì)插入法查表16.2得[?0b]?102.5Mpa[??1b]?60Mpa??0.59[??1b]60???[?0b]102.5?T?0.59?149568N?mm右軸頸中間截面2MeB=MB2?(?T)=2051322?882452?240113N??T?88245N?mmmm校核軸頸軸的結(jié)構(gòu)化

小齒輪中間截面MeC=MC2?(?T)=1377682?882452?163606N?最小軸頸估算2MeA?240113N?mmMeB?163606N?mmmmN·dB?1.03?3MeB?1.03?0.1[??1b]3240113?34.205mm0.1?60dB?34.205mmdC?31.002mmdC?1.03?3MeC?1.03?0.1[??1b]3163606?31.002mm0.1?60

軸受力圖水平面受力圖水平彎矩圖垂直受力圖