变速箱壳体加工工艺外文翻译Word文件下载.doc

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学生姓名XXXXXX

专业班级机械设计制造及其自动化（本科二班）

学号200933080

院（系）机械工程学院

指导教师（职称）XXXXXX

郑州科技学院机械工程系

二○一三年五月十八日

Gearboxshellmachiningprocessdesign

《ManufacturingEngineeringandTechnology—Machining》

MechanicalIndustryPressInMarch2004,version1p560—564

（Seropekalpakjian）（StevenR.Schmid）

Abstract

Gearboxshellisamorecomplexstructureofsparepartsbox,itshighprecision,complexprocess,andtheprocessingqualitywillaffecttheoverallperformanceengine,soithasbecometheenginemanufacturer'

sfocuspartsone.Machiningprocessplanningmustguaranteethemachiningqualityofparts,tomeetthetechnicalrequirementsstipulatedindrawings,atthesametimeshouldalsohavehighproductivityandefficiency.Therefore,machiningprocessplanningdesignisanimportantwork,requiresdesignersmusthavearichexperienceinproductionpracticeandwiderangeofmechanicalmanufacturingtechnologybasictheoryknowledge.Inthespecifiedprocedure,shouldaccordingtotheproductionofpartsandtheexistingequipmentconditions,takingtheprocessingqualityintoaccount,productivityandeconomyrequirements,afterrepeatedanalysisandcomparison,todeterminetheoptimalorthebestsolution.

1.TechnicalCharacteristicsofthegearboxshell

Thegearboxshellprocessfeaturesare:

thestructureofcomplexshape;

processingplane,morethanholes;

unevenwallthicknessandstiffnessislow;

processingofhighprecisiontypicalofbox-typeprocessingpart.Themainprocessingofthesurfaceofcylinderblocktopsurface,themainbearingside,cylinderbore,themainandcamshaftbearingboreholesandsoon,theywilldirectlyaffectthemachiningaccuracyoftheengineassemblyprecisionandperformance,mainlyrelyonprecisionequipment,industrialfixturesreliabilityandprocessingtechnologytoensurethereasonableness.

2.Thegearboxshellprocessdesignprinciplesandthebasis

DesignTechnologyprogramshouldbetoensureproductqualityatthesametime,givefullconsiderationtotheproductioncycle,costandenvironmentalprotection;

basedontheenterprisesabilitytoactivelyadoptadvancedprocesstechnologyandequipment,andconstantlyenhancetheirleveloftechnology.Gearboxshellmachiningprocessdesignshouldfollowthefollowingbasicprinciples:

2.1Theselectionofprocessingequipment

Theprincipleofselectionadoptedtheprincipleofselectionadoptedtheprincipleofcombiningrigid-flexible,processingeachhorizontalmachiningcenterislocatedmainlysmalloperationswithverticalmachiningcenter,thekeyprocessacrankhole,cylinderhole,balancershaftholeHigh-speedprocessingofhigh-precisionhorizontalmachiningcenter,anupperandlowernon-criticalprocessesbeforeandafterthefour-dimensionalhigh-efficiencyroughmillingandhaveacertainadjustmentrangeofspecialmachineprocessing;

2.2Concentrationprocessprinciple

Focusonakeyprocessinprincipleprocessthebodycylinderbore,crankshafthole,BalanceShaftholesurfacefinishingandthecombinationofprecisionmillingcylinderhead,usingaprocessfocusedonasetupprogramtocompleteallprocessingelementsinordertoensureproductaccuracyThekeyqualityprocessestomeetthecylindercapacityandtherelevanttechnicalrequirements;

3.Thegearboxshellmachiningprocessdesignthemaincontent

Gearboxshellcomplexstructure,highprecision,argesize,isthin-walledparts,thereareanumberofhighprecisionplaneandholes.Engineblockmachiningprocesscharacteristics;

mainlyflatandtheholeprocessing,processingofflatgenerallyuseplaning,millingmethodssuchasprocessing,processingofholeusedmainlyboring,processingandmulti-purposedrillingholes.Asthecylindercomplexstructure.sohowtoensurethatthemutualpositionofthesurfaceprocessingprecisionisanimportantissue.

3.1Theselectionofblank

GearboxshellonthematerialsusedaregenerallygraycastironHT150,HT200,HT250,thereisalsocastaluminumorsteelplate,thisengineblockusinghigh-strengthalloycastiron.Cylinderintheprocessingpriortoagingtreatmentinordertoeliminatestressandimprovetheroughcastingmechanicalproperties.

Improvetheroughaccuracy,reductionofmachiningallowance,istoimprovetheautomatedproductionlinesystemproductivityandprocessingqualityoftheimportantmeasures.Astheforeignbox-typepartsofroughqualityandhighprecision,anditsproduction-linesystemhasbeenimplementeddirectlyontheblankline,notonlyeliminatingtheneedforblankcheckdevicealsosavestheroughqualityproblemsduetowa