可靠性论文设计

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1、可靠性论文设计FuzzyreliabilitydesignofmachinetoolspindleFuzzyreliabilitydesignofmachinetoolspindleandfuzzyreliabilitydesignofmachinetoolspindleFuzzyreliabilitydesignofmachinetoolspindleYangKunYangKunYangKunYangKunmechanismMechanismMechanism082(080301211)082(080301211)082(0803012

2、11)082(080301211)pickPickpickwantWanttoThispaperdescribestheproblemsexistinginthespindledesignoftheconventionalmachinetools,andputsforwardaproposalforthedesignofthemainpartsofthemachinetoolsThepastereliabilitydesignisappliedtotherigiditycheckofthemainshaftDependingonthede

3、signprocessandresults,aswellasthedifferencefromtheconventionalreliabilitydesign,thespindleisemployedThenecessityoffuzzyreliabilitydesign.KeywordKeywordskeywordsKeyword:Machinetoolspindle：fuzzyreliabilitydesign;rigiditycheckingintroductionIntroductionIntroduction：Spindlepa

4、rtsareimportantpartsofmachinetools,andtheirperformanceontheperformanceoftheentiremachinetoolandMachiningqualityandmachinetoolproductivityhaveadirectimpact,whileagoodperformanceofspindlecomponentsTheremustbeenoughstiffness・Thecommonmachinetoolspindlebearsbendingforceandise

5、xpressedbybendingrigidity,Thebendingstiffnessismeasuredbythedeflectionattheendofthespindle・ThetraditionalstiffnesscheckistocontroltheendofthespindleThedeformationofYisnotgreaterthantheallowablevalueof[yO],whichislessthan[yYO],thisapproachisunscientificOf.Forexample:[yO]=0

6、.005,suchastheactualy二0.0049,cannotsimplybelievethatthespindleisabsolutelyreliable;suchastheactualy二0.0051,shouldnotsimplythinkthatThespindleisabsolutelyunreliable・ItiswellknownthattherandomnessofashaftdrivehasacertainprobabilityTheuncertaintyanduncertaintyofeacheventinth

7、esetofevents(EngineeringPractice)Anotherkindofuncertaintyexistinginstructureiswidelyexistedinloading,material,processingandsoonIntheprocessofdesign,fuzzyreliabilitytheoryisneededandthestructureofmachinetoolspindleisusedParametersarethemostimportantfactorsdeterminingthesti

8、ffnessofthespindlecomponents・Onthewhole,stiffnessisrequiredThefuzzyreliabilitydesignisnecessaryf