JigsandFixture解析.ppt

机械工程英语MechanicalEngineeringEnglishDefinitionofaDrillJigIntroductionNewTermsandTerminologiesContentsTypicalJigsandFixtures1234NewWordsandTerminologiesJig:钻模Fixture:夹具Workpiece:工件Cuttingtool:***,切削工具,切削***Clamp:vt,夹住,加紧;n,夹具Casting:n,铸造,ing:n,锻造,锻件Rib:n,加强肋Core:n,型芯Drill:n,钻头,钻机Reamer:n,铰刀NewWordsandTerminologiesCutter:n,铣刀Bolt:n,螺栓Nut:n,螺母Clearance:n,间隙Observance:n,遵守Encroach:侵犯,侵占Perpendicular:垂直的Tap:攻螺纹Bushing:n,套管,衬管Hardened-steel:淬火钢Flange:n,法兰,凸缘Milling:n,铣削planing:n,刨Shaping:n,成形Turning:n,车削,车削加工Tenon:n,突隼NewWordsandTerminologiesIntroductionIthasalreadybeenstatedthattheworkpiecemustbelocatedrelativetothecuttingtool,,itisstillnecessarytopositionitwithrespecttothemachinemovements,***定位并确保到位。工件划线后,仍有必要将其相对于切削运动定位,并在机加工开始前把它装夹到位。工件划线机械工程英语Whenseveralidenticalworkpiecesaretobeproducedtheneedtomarkouteachpartiseliminatedbytheuseofjigsandfixtures,ingisinvolved,atrialworkpieceismarkedout,toensurethattheworkpiececanbeproducedfromit,andtoensurethatribs,cores,,使用钻模和夹具可以不必在每个工件上划线;但对铸件或锻件而言,还需取一试验工件划线以保证照此加工不会将加强肋、型芯等放错位置。钻模夹具铸件锻件加强肋型芯机械工程英语Jigsandfixturesarealikeinthattheybothincorporatedevicestoensurethattheworkpieceiscorrectlylocatedandclamped,buttheydifferinthatjigsincorporatemeansoftoolguidingduringtheactualcuttingoperation,,theonlycuttingtoolsthatcanbeguidedwhileactuallycuttingaredrills,reamers,andsimilarcutters;andsojigsareassociatedwithdrillingoperations,,它们的不同在于钻模在实际切削作业中还能与***导向方法相结合,它们的不同在于钻模在实际切削作业中还能与***导向方法相结合,而夹具则不能。实际上,在真实切削中能被导向的切削***只有钻头、铰刀和类似的***;因此钻模用于钻削作业,而夹具用于其余作业。夹具可以与切削***相对定位系统装夹的方法结合在一起。夹紧切削操作钻头铰刀***机械工程英语Theadvantagesofjigsandfixturescanbesummarizedasfollows:1)Markingoutandothermeasuringandsettingoutmethodsareeliminated;2)Unskilledworkers