基于改进启发式方法的轻型车底盘装配线平衡分析

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1、哈尔滨理工大学工程硕：j：学位论文ResearchonChassisAssemblyLineBalanceofLightDutyTruckBasedonImprovedHeuristicMethodAbstractDuetotheboomingautomarketinrecentyears，theplantmustadjustthecycletimetomeetmarketchangeSOthatitcausesthelinenotbalanced．Thelinebalanceisonehardtaskfor

2、theenterprise．Lightvehicleassemblyprocessismorecomplex，especiallythechassislineassemblesthebigpartandcomplexpart．Inordertoincreasetheproductionefficiencythechassislineneedstobebalanced．Firstly,thispaperanalysedthechassisstatusbeforebalancing．Iusedthemethods

3、tudytomaketheprocessanalysisforthethreegroupsofchassisline，andmadetheelementandmotionanalysisfor16stationsoffirstgroupwithanalyzingthebottoleneckstationstatustoassembletheharness．Byvideomethod，Imadethedetailedtimeanalysisfor16stationsoffirstgroup．Forthislin

4、ethelongeststationoperationtimeis219secondsandtheshorteststationoperationtimeis88seconds．ThestationslikeC1LIandC4L1operationtimehassurpassedtheCTandotherstationsoperationtimeisshort．Thechassisfirstgroupoflightdutytruckwasnotbalanced，SOithasinfluencedtheoper

5、atorworkingandprodudionefficiency．Secondly,thetraditionalheuristicmethodisimprovedbyaddingthelinebalanceconstraintsincludingpositionconstraint，tool，materialandsafetyconstraints，andergonomicsandpersonneltypeconstraints．Balanceratio，balanceefficiencyandsmooth

6、nessindexaretheevaluationtargets．Thechassisfhrstgroupisbalancedbyusingtheimprovedheuristicmethodbasedon16stationstimeanalysisdataandactualassemblyconstraintsofchassisfirstline．Theeffectwasanalysedafterbalancing．Bycomparingthebalancebeforeandafterdata，thelin

7、ebalanceratiowasfrom73％to93％，lineefficiencywasfrom88％to92％，smoothnessindexwasfrom46．2to27．4．Theimprovedprocessafterbalancingwasappliedtoactualproduction，everyoperatorcouldfinishtheirjobwithinthesamecycletime．ThebalanceresultiS．II—verygood．Atthesametimeitpro

8、vedwiderangeandoveralllinebalance．thatthemethodwasapplicabletosolvetheAt1ast，thepaperpresentsamethodwhichcansolvesmallscopeproductionlinebalancebasedonAPSsystem．Igaveanexamplethatassemblingtheunloadval