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《數(shù)控銑床組合夾具設(shè)計(jì)與機(jī)械加工工藝結(jié)構(gòu)設(shè)計(jì)》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、西安工業(yè)大學(xué)北方信息工程學(xué)院畢業(yè)設(shè)計(jì)(論文)數(shù)控銑床組合夾具設(shè)計(jì)與機(jī)械加工工藝結(jié)構(gòu)設(shè)計(jì)摘要夾具是能夠使產(chǎn)品按一定的技術(shù)要求準(zhǔn)確定位和牢固夾緊的工藝裝置,它的主要用于保證產(chǎn)品的加工質(zhì)量、減輕勞動(dòng)強(qiáng)度、輔助產(chǎn)品檢測(cè)、展示、運(yùn)輸?shù)?。軸類工件是常見的工程結(jié)構(gòu),提高軸類工件銑床夾具設(shè)計(jì)效率有實(shí)際工程意義。目前,世界上許多國(guó)家在計(jì)算機(jī)輔助夾具設(shè)計(jì)方面,都做了大量工作。我國(guó)在該項(xiàng)領(lǐng)域中尚處于研究階段。計(jì)算機(jī)輔助夾具設(shè)計(jì)是通過計(jì)算機(jī)軟件程序來完成夾具結(jié)構(gòu)設(shè)計(jì)、總裝圖和零件圖的繪制,以及制定出夾具零件的制造工藝等主要工作的
2、計(jì)算機(jī)輔助機(jī)械設(shè)計(jì)的一個(gè)分支。傳統(tǒng)的機(jī)床夾具設(shè)計(jì)需要檢索許多資料,并花費(fèi)許多繪圖時(shí)間,設(shè)計(jì)的效率低、成本高。機(jī)床夾具設(shè)計(jì)往往還需借助于設(shè)計(jì)者的經(jīng)驗(yàn)。計(jì)算機(jī)輔助夾具設(shè)計(jì)的開發(fā)和應(yīng)用,既可縮短設(shè)計(jì)周期,又能促進(jìn)機(jī)床夾具的標(biāo)準(zhǔn)化和系列化。在計(jì)算機(jī)輔助夾具設(shè)計(jì)中,主要分為組合夾具和專用夾具設(shè)計(jì)二類。而國(guó)際上主要研究的對(duì)象是采用標(biāo)準(zhǔn)元件的槽系和孔系的組合夾具。當(dāng)前國(guó)外正向開發(fā)夾具柔性化系統(tǒng)領(lǐng)域努力。夾具柔性化主要表現(xiàn)在以下兩方面:一是結(jié)構(gòu)的柔性化,即廣泛采用標(biāo)準(zhǔn)元件的槽系和孔系組合夾具。二是夾具設(shè)計(jì)過程柔性化,也就
3、是利用計(jì)算機(jī)技術(shù)和人工智能,把工程師設(shè)計(jì)夾具的過程描述為一個(gè)軟件系統(tǒng)。關(guān)鍵詞:夾具;SolidWorks;零件庫(kù);標(biāo)準(zhǔn)件;模型2IAbstractFixtureistomaketheproductsaccordingtocertaintechnicalrequirementsforaccuratepositioningandfirmclampingoftheprocessdevice,itsmainproductsforprocessingtoensurequality,reducelaborintens
4、ity,supportproducttesting,displayandtransportation.Shaftpartsisacommonprojectstructureandimprovetheefficiencyofshaftpartsmillingfixturedesignofpracticalengineeringsignificance.Currently,manycountriesinthecomputer-aidedfixturedesign,hasdoneagreatjob.Chinai
5、nthefieldresearchstage.Computer-aidedfixturedesignbycomputersoftwareapplicationstodoFixtureDesign,assemblyTuandmappingcomponents,andfixturepartstodevelopmanufacturingprocessesandothermajorworkinabranchofcomputeraidedmechanicaldesign.Thetraditionaldesignof
6、jigsandfixturesneedtoretrievealotofinformation,andspendtoomuchtimedrawinganddesignoflowefficiencyandhighcost.Toolfixturedesignoftenneedthehelpofthedesigner'sexperience.Computer-aidedfixturedesigndevelopmentandapplication,canshortenthedesigncycle,butalsoto
7、promotethestandardizationandserializationofjigsandfixtures.Inthecomputer-aidedfixturedesign,dividedintomodularfixtureandspecialfixturedesignTypeII.Themajorinternationalstudyoftheobjectisastandardcomponentofthetanksystemandacombinationoffixtureholes.Thecur
8、rentpositivedevelopmentofforeignsystemsinthefieldofflexibleworkfixture.Fixtureflexibilityliesinthefollowingtwoaspects:First,theflexiblestructure,widerangeofstandardcomponentsthatslotmodularfixturesystemandholes.Seco