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1、第51卷第3期机械工程学报Vol.51No.32015年2月JOURNALOFMECHANICALENGINEERINGFeb.2015DOI：10.3901/JME.2015.03.206*基于均匀设计法的精密车削参数优化1112李登万陈洪涛冯锦春钟成明(1.四川工程职业技术学院四川装备制造业产业集群技术创新中心德阳618099；2.东方汽轮机有限公司叶片分厂德阳618099)摘要：为了探索难加工材料-奥氏体不锈钢精密车削的参数优化问题，引入伪变量A表达车削冷却降温条件，用均匀设计法设计含定性因素混合水平的精密车削试验方案。在干式、环保型湿式和低温冷风微油
2、雾三种不同车削冷却降温条件下，实现低成本高效率的精密车削试验。在这三种条件下，以切削速度、进给量、背吃刀量和刀尖半径为优化变量，以表面粗糙度、表面残余应力、切削力、切削温度、刀具寿命和切削效率为优化目标函数，建立了奥氏体不锈钢精密车削参数优化模型，还对车削参数进行了优化和验证，效果明显。以刀具磨钝前能车削出的总金属表面积作为刀具寿命，在工件连续表面不出现接刀现象的前提下进行精密车削参数优化。研究成果对指导大型工件精密车削的参数选择具有实际意义。关键词：均匀设计；精密车削；参数优化；刀具寿命；表面残余应力中图分类号：TG506PrecisionCuttingP
3、arametersOptimizationBasedonUniformDesignMethod1112LIDengwanCHENHongtaoFENGJinchunZHONGChengming(1.SichuanTechnologyInnovationCenterofEquipmentManufacturingIndustryCluster,SichuanEngineeringTechnicalCollege,Deyang618099;2.VaneBranch,DongfangSteamTurbineCo.,Ltd.,Deyang618099)Abstrac
4、t：Inordertoexploreprecisionturningparameteroptimizationofausteniticstainlesssteelwhichisadifficultcuttingmaterial,pseudo-variableAisintroducedasafactorofcoolingcuttingconditions,andaprecisionturningexperimentprogramisprojectedbyuniformdesignmethod,whichcontainsqualitativefactorshyb
5、ridlevel.Alowcostandhighefficiencyturningtestiscarriedoutinthreedifferentconditionsofdrycutting,wetcuttingandcuttingwithlowtemperatureaircontainingmicro-oilmist.Underthethreecoolingcuttingconditions,theprecisionturningparameteroptimizationmodelofausteniticstainlesssteelisestablishe
6、d,inwhich,cuttingspeed,feedamount,cuttingdepthandtoolnoseradiusaretakenasoptimizationvariables,andsurfaceroughness,surfaceresidualstress,cuttingforce,cuttingtemperature,toollifeandcuttingefficiencyaretakenasobjectivefunctions.Meanwhile,theparametersareoptimizedandverified,andthetes
7、tresultsshowthattheoptimizationeffectisgood.Totalmetalsurfaceareathatcanbelathedbeforecutterbluntistakenasthecutterlife,andprecisionturningparametersareoptimizedintheconditionofworkpiececontinuoussurfacewithoutmachinedtrace.Theresultsareusefulforprecisionturningparametersselectioni
8、nheavyworkpiececutting.Key
