卧式平压模切机输纸及定位系统的分析与研究-印刷工程专业论文.docx

Subject:ANALYSEANDRESEARCHOFDIE-CUTTINGMACHINE’SPAPERFEEDINGANDPOSITIONINGSYSTEMSpecialty:PrintingEngineeringAuthor:GuoGuanminSignature:Supervisors:Cheng GanghuProfessorSignature:ZhangXuanshengProfessorSignature:Date:2006.03AbstractTheperiodicmotionmechanismandpositioningmechanism，whoseperformancecouldimpactdirectlyontheDie-cuttingmachine’sworks,aretwoofthemostimportant components in that machine. The paper is proceeded with a fund project of BeijingMunicipal Education Commission named “The Research of Die-cutting Machine’s StabilityandReliability”.Themotionaltheorieswereusedintheresearchofthe periodicmotionmechanism;themodelofperiodicmotionmachinewas establishedusingNewton’stheoryandthemotionalprincipleofthemechanismwasoptimized.The positioningmechanismswereredesignedafteranalysisofthemusingoptimization designwasdone,andtheresultwasgood.Theresultsweresummarizedasfollows:Theprofilesoftheperiodicmotionmechanismwasanalyzed,andtheprofilesofparallelindexingcamwithdifferentparametersandmotional principles were got aswellasthedata;theconditionsthatimpactedtheprofileswererealizedandanalyzed;Amodelthatdescribedthetorsionstiffnessoftheinput and the output shafts,theseweretwo most important factors, was established; the equations describing themodelweregotaswellastheresultingcurvesaftercomputingthem;The resulting curves describing acceleration of parallel indexing cams with different motional principles and different parameters were got; the analyses andcomparisonsofprinciples’andparameters’impactsontheresultingweredone;ThemotionalprincipleoftheparallelindexingcaminaDie-cuttingmachinewereoptimized;tentimes’pointsofaspecialprinciplewerevariables,andvibrationsoftheresultingcurveofceasingperiodwerethetargets,andtheconnectionofvariablesandotherperformanceswereconditions.Theoptimizedcurvesloweddownthevibration;Thefirstpositioningoriginalmotioncurvesweregotafterthecamwascomputed.Theacademiccollisionspeedthatwastoohighforprecisepositioningwaslowerafternewmotionalprin