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1、Gearboxshellmachiningprocessdesign《ManufacturingEngineeringandTechnology——Machining》MechanicalIndustryPressInMarch2004,version1p560—564(Seropekalpakjian)(StevenR.Schmid)AbstractGearboxsheIIisamorecomplexstructureofsparepartsboxjtshighprecision,complexprocess,andtheprocessingqualitywill
2、affecttheoverallperformaneeengine,soithasbecometheenginemanufacturer'sfocuspartsone.Machiningprocessplanningmustguaranteethemachiningqualityofparts,tomeetthetechnicalrequirementsstipulatedindrawings,atthesametimeshouldalsohavehighproductivityandefficiency.Therefore,machiningprocessplan
3、ningdesignisanimportantwork,requiresdesignersmusthavearichexperienceinproductionpracticeandwiderangeofmechanicalmanufacturingtechnologybasictheoryknowledge・Inthespecifiedprocedure,shouldaccordingtotheproductionofpartsandtheexistingequipmentconditions,takingtheprocessingqualityintoaccou
4、nt,productivityandeconomyrequirements,afterrepeatedanalysisandcomparison,todeterminetheoptimalorthebestsolution.1.TechnicalCharacteristicsofthegearboxsheIIThegearboxshellprocessfeaturesare:thestructureofcomplexshape;processingplane,morethanholes;unevenwallthicknessandstiffnessisIow;pro
5、cessingofhighprecisiontypicalofbox-typeprocessingpart.Themainprocessingofthesurfaceofcylinderblocktopsurface,themainbearingside,cylinderbore,themainandcamshaftbearingboreholesandsoon,theywilldirectlyaffectthemachiningaccuracyoftheengineassemblyprecisionandperformance,mainlyrelyonprecis
6、ionequipmentjndustrialfixturesreliabilityandprocessingtechnologytoensurethereasonableness.2.ThegearboxshellprocessdesignprinciplesandthebasisDesignTechnologyprogramshouldbetoensureproductqualityatthesametime,givefullconsiderationtotheproductioncycle,costandenvironmentalprotection;based
7、ontheenterprisesabilitytoactivelyadoptadvancedprocesstechnologyandequipment,andconstantlyenhancetheirleveloftechnology.Gearboxshellmachiningprocessdesignshouldfollowthefollowingbasicprinciples:2.1TheseiectionofprocessingequipmentTheprincipieofseiectionadoptedtheprincipleofselectionad
