簡介：分婁號塑111密級單位代碼I學(xué)號塑墮7奪肥工學(xué)火警HEFEIUNIVERSITYOFTECHNOLOGY碩士學(xué)位論文MASTERDISSERTATION論文題目汽車后橋主減速器裝配過程的學(xué)位類別學(xué)科專業(yè)工程領(lǐng)域作者姓名導(dǎo)師姓名完成時間力學(xué)性能分析與隔套選型學(xué)歷碩士固體力學(xué)曹張牛忠榮教授2006年6月ANALYSISOFTHEMECHANICALCAPABILITYINTHEASSEMBLEDTECHNIQUEOFTHEMAINREDUCEROFREARAXLEANDSELECTIONOFTHETYPEFORTHESLEEVEGASKETSABSTRACTTHISPAPERSTUDIESTHEMECHANICALCAPABILITYOFTHEASSEMBLYOFTHEMAINREDUCERBASEDONTHEINVESTIGATIONOFNATIONALANDINTERNATIONALASSEMBLYLINEOFTHEMAINREDUCERTHROUGHANALYZINGTHESTRUCTUREOFTHEMAINREDUCER，SOMEMECHANICALFACTORS，WHICHAFFECTTHEQUALITYOFTHEASSEMBLINGPROCESSOFTHEREARAXLE，AREFOUNDOUTTHETRADITIONALTECHNIQUEINASSEMBLINGREARAXLEISHOWTODETERMINETHETHICKNESSOFTHEGASKETBASEDONPRETIGHTENMOMENTINTHEPROCESSOFASSEMBLY，THEANALYTICALMODELOFTHEMAINREDUCEISESTABLISHEDTHROUGHTHEORETICALANALYSISOFTHECONNECTIONBETWEENSCREWEDMOMENTANDAXLEFORCEBYUSINGFINITEELEMENTANALYSIS，THESUITABLETHICKNESSOFTHEGASKETISOBTAINEDWECANLEARNTHEINFLUENCEOFMECHANICALCAPABILITYOFMAINREDUCERSANDFINDTHEVARIABLERULEOFTHEPRETIGHTENINGFORCEWITHADJUSTINGTHETHICKNESSOFGASKETSTHERESULTSOFTHEPAPERISBENEFICIALTOIMPROVETHEASSEMBLINGQUALITYOFMAINREDUCERANDTOCONTROLPRETIGHTENPURPOSEOFTHEAXLEINTHESECONDPART，WEOBTAINSTRESSFIELDANDDISPLACEMENTFIELDOFTHEMAINREDUCERAFTERASSEMBLYBYFINITEELEMENTMETHODASARESULT，STRENGTHEVALUATIONOFTHEMAINREDUCERISPERFORMEDBASEDONTHESERESULTS，SOMETHEORETICSUGGESTIONSFORTHEDESIGNANDMANUFACTUREOFTHEMAINREDUCERAREPROVIDEDACCORDINGTOTHESLEEVEGASKET’SFUNCTIONANDINVESTIGATIONOFTHEAPPLIEDSTATUSOFFOREIGNCOUNTRIESABOUTELASTICSLEEVEGASKET，WESUGGESTTHATTHESHAPEOFSTIFFSLEEVEGASKETS，WHICHAREUSEDCURRENTLYINCHINA，SHOULDBECHANGEDTHEPRESENTPAPERPROPOSEDANEWTYPEOFSLEEVEGASKETWITHMOREFLEXIBILITYINSTEADOFORIGINALSTIFFONEINORDERTOIMPROVETHEMECHANICALCAPABILITYOFTHEMAINREDUCERKEYWORDSASSEMBLYOFREARAXLE，MAINREDUCERBEARINGPRETIGHTENED，F(xiàn)INITEELEMENTANALYSIS，SLEEVEGASKET，GASKET

簡介：申請上海交通大學(xué)工程碩士學(xué)位論文某MPVMPV車型車型主減速器嘯叫機理主減速器嘯叫機理研究研究及改進設(shè)計及改進設(shè)計院系機械與動力工程學(xué)院工程領(lǐng)域工程領(lǐng)域車輛工程交大導(dǎo)師交大導(dǎo)師蔣偉康教授企業(yè)導(dǎo)師企業(yè)導(dǎo)師呂俊成高級工程師工程碩士工程碩士張亮學(xué)號1130212127上海交通大學(xué)機械與動力工程學(xué)院上海交通大學(xué)機械與動力工程學(xué)院2012016年5月RFRTIEEIONIHAIBFFE4EEFRFFETLLICE445FRILTF€TJ4DTRITSEDBDEORRDEEEEFE3O96D_OHELHIBTRAE3DQEREOJR6I4TJ1GOLTTIUEEAR36IRC6__N61“F3E4FIQ9LAF4ETLIRIFS4RAETTRTRTIAL“ZVFU

簡介：碩士學(xué)位論文碩士學(xué)位論文約束阻尼結(jié)構(gòu)及艦船用減速器箱體的阻尼特性分析DAMPINGACTERISTICSANALYSISOFCLDSTRUCTUREMARINETRANSMISSIONBOX楊瑞哈爾濱工業(yè)大學(xué)哈爾濱工業(yè)大學(xué)2014年6月CLASSIFIEDINDEXO322TH1131UDC53135341DISSERTATIONFTHEMASTERDEGREEINENGINEERINGDAMPINGACTERISTICSANALYSISOFCLDSTRUCTUREMARINETRANSMISSIONBOXCIDATEYANGRUISUPERVISDEPUTYPROFLIANGTINGWEIACADEMICDEGREEAPPLIEDFMASTEROFENGINEERINGSPECIALITYGENERALFUNDAMENTALMECHANICSAFFILIATIONSCHOOLOFASTRONAUTICSDATEOFDEFENCEJUNE2014DEGREECONFERRINGINSTITUTIONHARBININSTITUTEOFTECHNOLOGY

簡介：重型車輪邊減速器強度與疲勞壽命預(yù)測學(xué)位論文完成日期‘指導(dǎo)教師簽字答辯委員會成員簽字重型車輪邊減速器強度與疲勞壽命預(yù)測II

簡介：學(xué)科分類號論文編號安徽理工大學(xué)碩士學(xué)位論文電動汽車輪邊減速器齒輪攪油損失研究與分析作者姓名王玉專業(yè)名稱扭撼王猩研究方向扭越遮讓導(dǎo)師姓名匾堂云副麴援導(dǎo)師單位扭越工程堂陵副導(dǎo)師姓名王越副塾援副導(dǎo)師單位墊越王堂院．答辯委員會主席夏圭態(tài)論文答辯日期2015年6月5日安徽理工大學(xué)研究生處2015年月日獨創(chuàng)性聲明本人聲明所呈交的學(xué)位論文是本人在導(dǎo)師指導(dǎo)下進行的研究工作及取得的研究成果。據(jù)我所知，除了文中特別加以標(biāo)注和致謝的地方N,,TJT，論文中不包含其他人已經(jīng)發(fā)表或撰寫過的研究成果，也不包含為獲得塞邀堡三太堂或其他教育機構(gòu)的學(xué)位或證書而使用過的材料。與我一同工作的同志對本研究所做的任何貢獻均已在論文中作了明確的說明并表示謝意。學(xué)位論文作者簽名至區(qū)日期巡年一多月』日學(xué)位論文版權(quán)使用授權(quán)書本學(xué)位論文作者完全了解塞邀壟三太堂有保留、使用學(xué)位論文的規(guī)定，即研究生在校攻讀學(xué)位期間論文工作的知識產(chǎn)權(quán)單位屬于塞徵堡王太堂。學(xué)校有權(quán)保留并向國家有關(guān)部門或機構(gòu)送交論文的復(fù)印件和磁盤，允許論文被查閱和借閱。本人授權(quán)安徽理工大學(xué)可以將學(xué)位論文的全部或部分內(nèi)容編入有關(guān)數(shù)據(jù)庫進行檢索，可以采用影印、縮印或掃描等復(fù)制手段保存、匯編學(xué)位論文。保密的學(xué)位論文在解密后適用本授權(quán)書學(xué)位論文作者簽名王己簽字日期刀燈年6月乃日導(dǎo)師簽名、F≯磁L簽字日期J『鏟多月／D日＼鄉(xiāng)

簡介：作為汽車傳動系統(tǒng)中降低轉(zhuǎn)速、增加扭矩的關(guān)鍵部件，汽車主減速器質(zhì)量的好壞對整個傳動系統(tǒng)的工作性能有重要影響。準(zhǔn)雙曲面齒輪是汽車主減速器的核心部件，其在嚙合過程中所產(chǎn)生的接觸印痕，是主減速器質(zhì)量的直觀反映。接觸印痕的位置、大小和形狀，是評價主減速器質(zhì)量的主要性能指標(biāo)。傳統(tǒng)的人工目測檢測方式易受主觀因素的影響，而機器視覺正在工業(yè)領(lǐng)域取得越來越廣泛的應(yīng)用。本文的研究重點就是采用數(shù)字圖像處理技術(shù)，對齒輪嚙合印痕圖像進行特征提取。文章主要從以下幾個方面進行了研究首先，對準(zhǔn)雙曲面齒輪嚙合印痕圖像進行了增強處理。在對印痕圖像進行灰度化處理的基礎(chǔ)上，分別采用基于直方圖均衡化、基于圖像內(nèi)容和基于線性灰度變換這三種方式對印痕圖像進行增強處理，均取得了良好的增強效果。其次，對準(zhǔn)雙曲面齒輪嚙合印痕圖像進行了邊緣提取處理。文章分別采用基于微分算子、基于線性濾波和基于小波變換的邊緣提取方式對增強后的印痕圖像進行邊緣提取處理，并對提取結(jié)果進行了對比。基于微分算子的邊緣提取分析中，重點論述了ROBERTS算子、SOBEL算子和PREWITT算子的邊緣檢測原理；基于線性濾波的邊緣提取分析中，著重介紹了應(yīng)用最廣泛的CANNY算子和LOG算子；基于小波變換的邊緣檢測方式則重點闡述了小波的邊緣檢測原理，并采用常用的幾種小波函數(shù)對印痕圖像進行了邊緣提取處理。最后，對準(zhǔn)雙曲面齒輪嚙合印痕圖像進行了特征參數(shù)提取和分析。采用形態(tài)學(xué)理論對提取的印痕邊緣圖像作進一步處理，得到完整的印痕及齒廓邊緣；計算得到基于印痕圖像的特征參數(shù)，并建立起基于LABVIEW的準(zhǔn)雙曲面齒輪嚙合印痕圖像邊緣提取系統(tǒng)。

簡介：合肥工業(yè)大學(xué)碩士學(xué)位論文后橋主減速器裝配的關(guān)鍵測量技術(shù)姓名葛海龍申請學(xué)位級別碩士專業(yè)機械電子工程指導(dǎo)教師林巨廣20050301KEYMEASU“NGTECHNIQUESINASSEMBLYLINEFORMAINREDUCEROFREARAXLEABSTRACTTHEPAPERFHLLYINVESTIGATESTHECURFENTSNUA“ONOFCIVILANDFOREIGNASSEMBLYNNES．FROMTHEAUTOMOBILE’SSITUATIONINOURCOUNTRY，THEASSEMBLYANDKEYMEASURINGTECHNIQUESAPPLICATIONFORMAINREDUCEROFREARAXLEARESTUDIED．BASEDONTHESTRUCTUREFEATUREOFMAINGEARCOMPOUNDINMAINREDUCER，TWOIMPORTANTTHINGSINASSEMBLYTECHNIQUEOFFEARAXLETHEPRETI曲TENEDFIXINGOFBEARINGANDTHEADJUSTINGOFGEARGEA“NGAREANALYZED．THECONTROLLEDVARIABLEPRETIGHTENINGMOMENTINTHEPROCESSOFASSEMBIYISTHENDECIDEDANDTHEMETHODFORIMPROVEMENTOFAGSEMBLYQUALITYISPOINTEDOUTADJUSTMENTOFBEARINGPRETIGHTENINGSTATEBYCONTROLOFTHEGASKETTHICKNESS．FROMTHIS，ACOMMONQUESTIONOFSPACEMEASURINGISTHENSUGGESTEDINTHISP印ER．THROU曲THEORE“CALANALYSISONRELATIONSHIPBETWEENTHESCREWEDMOMENTANDTHEAXLEFORCE，THEWAYOFPASSINGFORCEAMONGDIF托RENTPARTSISSTUDIED．BYEXPERIMENT，THEFELATIONBETWEENPRETI曲TENINGMOMENTANDAXLEFORCEISFOUNDOUT．THISNOTONLYSTATESTHEFCASIBILITYOFADJUSTMENTOFPRETIGHTENINGMOMENTBYCONTROIOFGASKETTHICKNESSCONTROLOFPRETIGLNENINGMOMENTBYCHANGINGOFDISTRIBUTIONOFAXLEFORCE，BUTALSOGUIDESTHEMODELINGOFTHEMEASUREMENT．DIF詫RENTFACTORSFORAF＆CTINGTHEMEASUREDPRETI曲TENINGMOMENTARESTUDIEDANDTHISSUPPLIESTHEPRINCIPLESOFTHEORETICALCOMPENSATIONFORIMPROVEMENTOFMEASURINGPRECISION．ABOVETHEFOUNDATIONOFTHEORE“CALRESEARCH，THEMEASURIN衛(wèi)MECHANISMWHICHISBASEDTHEINDUSTRYCONTROLCOMPUTERSYSTEMISDEVELOPED．THEMACHINECANMEETTHEREQUIREMENTOFASSEMBLYPRECISIONANDC柚BEUSEDINRAPIDPRODUCTIONOFASSEMBLYIINE．THEOPTIMIZEDCOMBINATIONWAYFORDIF托RENT．THICKNESSGASKETSAREALSOSUGGESTED．THISMAKESTHEDEVELOPEDMACHINEPRACTICAIINPRODUCTION．AFTERTHESELECTEDGASKETISASSEMBLEDINMAINREDUCEROFREARAXLE，THEON．1INEDETECTIN疊EQUIPMENTISUSEDTOMEASURETHEQUALITYOFASSEMBLY．THISNOTONLYCANCONTR01THEQUALITYOFASSEMBLEDPRODUCT，BUTALSOCANEVALUATETHECORRECTION，REASONABILITVANDUSABILITYOFTHEMACHINE．THROUGHTHEPRACTICAIAPPLICATIONINPRODUCTIONSPOT，ITRUNSWELL．THISPROVESITISREASONABLEINITSPRINCIPLE，CONSTRUCTIONDESIGNANDMEASURINGMETHOD．THEDEVELOPEDDEVICEHASAGOODNEXIBILITY，WHICHCANBEUSEDFORTHEON．1INE

簡介：華中科技大學(xué)碩士學(xué)位論文車用液力減速制動器研究姓名時軍申請學(xué)位級別碩士專業(yè)車輛工程指導(dǎo)教師過學(xué)迅2002330華中科技大學(xué)碩士學(xué)位論文ABSTRACTVEHICLESEQUIPPEDWITHFRICTIONALBRAKEWOULDCRERTELARGEQUANTITYOFHEATWHENUSEDCONTINUOUSLYFURTHERLNOREGREATINJUREANDINVALIDATIONWOULDBCCAUSEDTOTHEBRAKE’STHISREMAINSTOBEADIFFICULTPROBLEMANDITISALSOAMAINCAUSEOFTRA伍CACCIDENTSODESIGNSOMEKINDSOFRETARDERTESOLVETHISPROBLEMHASANPRACTICALSIGNIFICANCEHYDRAULICRETARDERISVERYSUITABLEFORCONTINUOUSBRAKINGSINCEITHASMANYADVANTAGESSUCHAS；LONGLIFE，LITTLEQUANTITYOFHEATANDGOODQUALITYOFCONTROL，THEDEVELOPMENTPROSPECTOFITISPROMISINGRESEARCHANDAPPLICATIONOFHYDRAULICRETARDERHASBEENDEEPLYINVESTIGATEDABROAD，WHILEITISJUSTBEGINNINGINCHINAN地MAINPURPOSEOFTHISDISSERTATIONISTODESIGNANEWKINDOFRETARDERADAPTINGTOCONTINUOUSBRAKING，STUDYITSDESIGNTHEORYANDMAKEAFORECASTTOITSCAPABILITYTHEHYDRAULICRETARDER’SCHARACTERANDITSDESIGNTHEORY眥INTRODUCEDINTHEBEGINNINGOFTHEARTICLEANDTHEN，THELIQUIDFLOWAGETHEORYINTHERETARDER’SCIRCLERANDITSCONSERVATIONOFENERGYDURINGTHEPERIODOFBRAKINGAREANALYZEDTHEPROCESSOFCHARGEANDDISCHARGEOFGASOLINEINRETARDER，THEAIRBLASTLOSSDURINGTHERETARDERDISEMPLOYMENTPHASEAREDISCUSSEDEITHERN地THEORIESOFONEDIMENSIONFLOWANDSIMILITUDEPRINCIPLE黜ADOPTEDINTHERETARDER’SDESIGNTHEORYANDPARAMETERSELECTIONALLOFTHISISHELPFULTOACHIEVEREGNLARIZATIONANDUNIVERSALITYOFTHEDESIGNOFHYDRAULICRETARDERATTHESANLETIME，THEHYDRAULICRETARDER’SDESIGNMODEL，THEORETICANALYSISMODELOFBRAKINGPERFORMANCEWEREESTABFISHEDNLEMATHEMATICALMODELOFCHARGEANDDISCHARGEOFGASOLINEINRETARDERANDTHEAIRBLASTLOSSTHEORYHADBEENUPBUILTN坨THEORETICANDEXPERIMENTALDATAWERECOMPAREDACCORDINGLYQUALITATIVEANALYSISOFEXPERIMENTERRORANDTHEORETICCALCULATIONERRORHADBEENDONETHEDESIGNANDBRAKINGPERFORMANCETHEORIESHADBEENVERIFIEDATTHESAMETIME，THERATIONALITYANDVALIDITYOFTHERETARDER’STHEORIESHADBEENTESTIFIEDKEYWARDSHYDRAULICRETARDERAUXILIARYBRAKINGVEHICLEII

簡介：主減速器作為汽車驅(qū)動系統(tǒng)的關(guān)鍵部件，它的質(zhì)量直接影響著整個驅(qū)動系統(tǒng)的性能。主減速器的質(zhì)量主要受齒輪副嚙合性能的影響，可以通過齒輪副的齒面接觸印痕直觀的反映出來。因此，齒面接觸印痕的位置、形狀和大小等特征一直是主減速器質(zhì)量評價的重要指標(biāo)。傳統(tǒng)的齒面接觸印痕檢測方法以人工目測為主，主觀性強、精度不高、效率較低。針對人工目測法的不足，本文采用了一種基于機器視覺和圖像處理的主減速器齒面印痕檢測方法來實現(xiàn)自動評價。論文首先從理論上分析了齒面接觸印痕的產(chǎn)生機理及其常見的影響因素；然后詳細(xì)介紹了敏感權(quán)重算法、單通道濾色算法、強度算法和自適應(yīng)權(quán)重算法等圖像灰度化方法，均值濾波、順序統(tǒng)計濾波和低通濾波等圖像平滑濾波方法，并對實物圖像的處理結(jié)果進行了比較；然后對增強后的圖像進行了基于灰度的閾值分割和數(shù)學(xué)形態(tài)學(xué)方法處理，得到了反映嚙合特征的印痕區(qū)域，并提取出了印痕區(qū)域的尺寸特征和方位特征，如面積，偏心率，質(zhì)心位置，旋轉(zhuǎn)角等；最后提出了齒面印痕圖像采集系統(tǒng)和圖像處理系統(tǒng)的框架結(jié)構(gòu)。論文基于LABVIEW虛擬儀器開發(fā)平臺，通過調(diào)用MICROVISION機器視覺產(chǎn)品自帶的動態(tài)鏈接庫和NIIMAQVISION軟件包中的相關(guān)圖像處理函數(shù)，并結(jié)合MATLAB編程搭建了基于圖像處理的主減速器齒面印痕檢測系統(tǒng)。該系統(tǒng)涵蓋了印痕圖像采集、圖像增強處理、圖像分割處理、圖像特征提取及質(zhì)量評價等功能模塊。通過比較檢測系統(tǒng)獲得的印痕區(qū)域和人工識別獲得的印痕區(qū)域，驗證了檢測系統(tǒng)的準(zhǔn)確性和高效性。論文所研究的主減速器齒面印痕檢測系統(tǒng)可作為主減速器總成質(zhì)量評價的一個組成部分，其提取的特征參數(shù)能較好的反映主減速器的嚙合狀況，該系統(tǒng)的應(yīng)用可以幫助改進裝配工藝，且能更好的保障產(chǎn)品質(zhì)量，減少下線產(chǎn)品的返修率，提高生產(chǎn)效率，進而降低企業(yè)的生產(chǎn)成本。

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