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ID:58436920
大小:3.23 MB
页数:81页
时间:2020-09-07
《机械制造技术基础双语第4章课件.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、机械制造技术基础FundamentalsofManufacturingTechnology第4章机床夹具设计原理作者:任小中单位:河南科技大学制作时间:2014年10月Chapter4DesignPrinciplesofFixture河南科技大学机电工程学院2021/8/13河南科技大学机电工程学院24.1Introductiontomachinetools’fixture4.1.1IntroductiontoFixtureDefinitionFixturesarethegeneraldesignationofal
2、lprocessequipmentusedtopositionandclamptheworkpieceinmachiningandothermanufacturingoperations,suchaswelding,heattreatment,machininginspection,andassemblyetc.ConfigurationoffixtureTheconfigurationofafixturedependsnotonlyontheworkpiececharacteristics,butalsoonth
3、esequenceofmachiningoperations,magnitudeandorientationoftheexpectedcuttingforces,capabilitiesofthemachinetool,andcost.2021/8/13河南科技大学机电工程学院34.1Introductiontomachinetools’fixture4.1.2ClassificationofFixturesClassificationsintermofapplicationandfeatureoffixtureG
4、eneralpurposefixtureSpecialpurposefixtureAdaptablefixture(可调夹具)ModularfixturePallet(Fixturemovablewithworkpiece)OtherclassificationsFixturesinmachiningprocesscanalsobeclassifiedaccordingtoitsplacedmachinetool,clampingpowersource,andtheapplicationandfeatureofth
5、efixtures2021/8/13河南科技大学机电工程学院44.1Introductiontomachinetools’fixture4.1.3FunctionsandElementsoftheFixture1.FunctionsoffixtureTakeajigandamillingmachinefixtureforexampleToensurethemachiningaccuracyreliably,reducingtheinfluenceofhumaninterferenceonmachiningTosho
6、rtentheset-upassistingtimeofworkpiece,andincreasetheproductivity,furtherreducingtheproductioncostToenlargethemachiningrangeofmachinetoolsToimprovetheworkingconditionanddecreasethelaborintensity2021/8/13河南科技大学机电工程学院54.1Introductiontomachinetools’fixture2.Compon
7、entsoffixture◆LocatorsThesecomponentsdirectlycontactorfitwiththelocatingsurfaceontheworkpieceandareusedtopositiontheworkpieceinfixture.◆ClampingdeviceItisusedtofixtheworkpiecetopreventthepositionofworkpiecefromchangingduetoallthedisturbingforcesduringthemachin
8、ingoperation.2021/8/13河南科技大学机电工程学院64.1Introductiontomachinetools’fixture2.Componentsoffixture◆Cutter-guidingcomponentItisusedtospecifythepositionofcuttingtoolrelationtothefixture.S
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