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《車(chē)床轉(zhuǎn)盤(pán)零件的機(jī)械加工工藝規(guī)程和專用夾具設(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、本科畢業(yè)設(shè)計(jì)(論文)說(shuō)明書(shū)摘要用與車(chē)外圓、端面和鏜孔等加工的機(jī)床叫車(chē)床。車(chē)削很少在其他種類的機(jī)床上進(jìn)行,因?yàn)槠渌麢C(jī)床都不能像車(chē)床那樣方便地進(jìn)行車(chē)削加工。由于車(chē)床除了用于車(chē)外圓外還能用于鏜孔、車(chē)端面、鉆孔和鉸孔,車(chē)床的多功能性可以使工件在一次定位安裝中完成多種加工。這就是在生產(chǎn)中普遍使用各種車(chē)床比其他種類的機(jī)床都要多的原因。車(chē)床的主要部件:床身、主軸箱組件、尾架組件、拖板組件、變速齒輪箱、絲杠和光杠大多數(shù)車(chē)床的刀架安裝在復(fù)式刀座上,刀座上有底座,底座安裝在橫拖板上??衫@垂直軸和上刀架轉(zhuǎn)動(dòng);上刀架安裝在底座上,可用手輪和刻度盤(pán)控制一個(gè)短絲杠使其前后移動(dòng)。轉(zhuǎn)盤(pán)用螺栓與中滑板緊固在一起,松開(kāi)螺母,可
2、使其在水平面內(nèi)扳轉(zhuǎn)任意角度,小滑板沿轉(zhuǎn)盤(pán)上的導(dǎo)軌可以做短距離的移動(dòng),當(dāng)轉(zhuǎn)盤(pán)扳轉(zhuǎn)某一角度后,小滑板便可帶動(dòng)車(chē)刀做相應(yīng)的斜向移動(dòng)。普通車(chē)床的轉(zhuǎn)盤(pán)位于上刀架和下刀架之間,它是上刀架的導(dǎo)向件,當(dāng)需要用小刀架車(chē)錐面時(shí),可通過(guò)賺盤(pán)相對(duì)于下刀架的轉(zhuǎn)動(dòng)來(lái)調(diào)整錐角,本說(shuō)明書(shū)堆車(chē)床轉(zhuǎn)盤(pán)零件的作用,零件的工藝過(guò)程,夾具設(shè)計(jì)做了比較系統(tǒng)完整的分析和論證。對(duì)工藝規(guī)程的設(shè)計(jì)做了詳細(xì)的說(shuō)明,并制定了合理的加工工藝路線,編制了一整套的機(jī)械加工工藝卡片。對(duì)關(guān)鍵工序的加工余量、工序尺寸、工序公差、切削用量等進(jìn)行了計(jì)算。對(duì)機(jī)械加工工藝過(guò)程中需要的夾具具進(jìn)行了設(shè)計(jì)分析,保證整個(gè)工藝過(guò)程的完整性。關(guān)鍵詞:金屬切削;轉(zhuǎn)盤(pán);精度;工藝規(guī)
3、程;公差49本科畢業(yè)設(shè)計(jì)(論文)說(shuō)明書(shū)AbstractThebasicmachinesthataredesignedprimarilytodoturning,facingandboringarecalledlathes.Verylittleturningisdoneonothertypesofmachinetools,andnonecandoitwithequalfacility.Becauselathecandoboring,facing,drilling,andreaminginadditiontoturning,theirversatilitypermitsseveraloperati
4、onstobeperformedwithasinglesetupoftheworkpiece.Theseaccountsforthefactthatlathesofvarioustypesaremorewidelyusedinmanufacturingthananyothermachinetool.LatheConstruction:Theessentialcomponentsofalathearedepictedintheblockdiagram.Thesearethebed,headstockassembly,tailstockassembly,carriageassembly,quic
5、k-changegearbox,andthelea&crewandfeedrod.Onmostlathesthetoolpostactuallyismountedonacompoundrest.Thisconsistsofabase,whichismountedonthecrossslidesothatitcanbepivotedaboutaverticalaxis,andan.uppercasting.Theuppercastingismountedonwaysonthisbase.sothatitcanbemovedbackandforthandcontrolledbymeansofas
6、hortleadscrewoperatedbyahand-wheelandacalibrateddial.Theturntableisfastenedtothemiddleslipboardbybolts.Loosethenut,wecanmaketheturntablerotatedinthelevelfornomaterwhatangle.Theminorslipboardcanmovealongtherailofturntableforashortdistance.Whentheturntablerotatesanangle,theminorslipboardwillmakeaside
7、longdisplacementcarrying.Generally,theturntablelocatesbetweentheupanddownkniferest,itistheupkniferest’sorientedmember.Whenwewanttocuttheconebyusingtheminor,wecanrotatetheturntable.Thisessaywillcoveranintegr