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1、摘要本文是對泵體零件加工應(yīng)用及加工的工藝性分析,此外還對鉆削泵體上3-M6-7H的螺紋孔以及銑削泵體底面的兩道工序的加工設(shè)計了專用鉆床夾具及專用銑床夾具。在機床上加工工件時,為了保證加工精度,必須正確安裝工件,使其相對機床切削成形運動和刀具占有正確的位置,這一過程稱為“定位”。為了不因受切削力、慣性力、重力等外力作用而破壞工件已定的正確位置,還必須對其施加一定的夾緊力,這一過程稱為“夾緊”。定位和夾緊的全過程稱為“安裝”。在機床上用來完成工件安裝任務(wù)的重要工藝裝備,就是各類夾具中應(yīng)用最為廣泛的“機床夾具”。機床夾具的種類
2、很多,但廣泛用于批量生產(chǎn),專為某工件加工工序服務(wù)的專用夾具,需要各制造廠根據(jù)工件加工工藝自行設(shè)計制造。因此,專用夾具的設(shè)計是一項重要生產(chǎn)準備工作,每一個從事加工工藝的工裝設(shè)計人員,都應(yīng)該掌握有關(guān)夾具設(shè)計的基礎(chǔ)知識。關(guān)鍵詞泵體加工工藝專用夾具鉆床夾具銑床夾具-51-AbstractThispaperisonthebracketpartsprocessingapplicationandprocessingtechnologyandanalysis,Inadditiontothestuffingboxcoverparttwop
3、rocessdesigningspecialfixture.Processestheworkpiecewhentheenginebed,toguaranteetheworkingaccuracy,mustinstalltheworkpiececorrectly,causesitsrelativeenginebedcuttingbuildermotionandthecuttingtoolholdsthecorrectposition,thisprocessiscalled“thelocalization”.Forbecau
4、seofexogenicprocessesandsooncuttingforce,forceofinertia,gravityisnotdestroyedtheworkpiecealreadythecorrectpositionwhichdecides,butmustexertcertainclampingforcetoit,thisprocessiscalled“theclamp”.Thelocalizationandtheclampentireprocessiscalled“theinstallment”.Usesf
5、orontheenginebedtocompletetheworkpiecetoinstallthedutytheimportantcraftequipment,isineachkindofjigwidelyapplies“theenginebedjig”.Theenginebedjig'stypearemany,theusescopebroadestuniversaljig,thespecificationsizemanyhavestandardized,andhasthespecialtyfactorytocarry
6、ontheproduction.Butwidelyusesinthevolumeproduction,speciallyunitclampwhichservesforsomeworkpieceworkingprocess,thenneedsvariousfactoriesindependentlytodesignthemanufactureaccordingtotheworkpieceprocessingcraft.Therefore,unitclamp'sdesignisanimportantproductionpre
7、paratorywork,eachisengagedintheprocessingcrafttheworkclothesdesigners,shouldgrasptherelatedjigdesigntheelementaryknowledge.KeywordsPumpbodyProcessingtechnologySpecialjigDrillingjigMillingjig-51-目錄摘要ABSTRACT第1章緒論11.1機械加工工藝概述11.2機械加工工藝流程11.3機床夾具概述21.3.1機床夾具21.3.2機床
8、夾具的功能21.3.3機床夾具在機械加工中的作用21.4機床夾具的發(fā)展趨勢31.4.1機床夾具的現(xiàn)狀31.4.2現(xiàn)代機床夾具的發(fā)展方向3第2章工藝規(guī)程設(shè)計52.1零件的分析52.1.1零件的作用52.1.2零件的工藝分析52.1.3零件的工藝要求62.2毛壞的選擇62.3加工工藝過程62.4確定各表面加工方案62.4