配备组合式支承辊的四辊冷轧机辊系弹性变形数学模型.pdf

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1、第44卷第6期中南大学学报(自然科学版)、，0l44NO．62013年6月JournalofCentralSouthUniversity(ScienceandTechnology)June2013配备组合式支承辊的四辊冷轧机辊系弹性变形数学模型董永刚，苏玉龙，张岩岩(1．燕山大学机械工程学院，河北秦皇岛，066004；2．燕山大学国家冷轧板带装备及工艺工程技术研究中心，河北秦皇岛，066004)摘要：为求解配备热装组合式支承辊的板带冷轧机辊系弹性变形，将辊套和辊芯进行分段离散，并考虑辊套装配凸度以及辊套与辊芯之间的弹性压扁，根据工作

2、辊、辊套及辊芯之间的变形协调以及力平衡条件，采用影响函数法推导出热装组合式支承辊辊系弹性变形数学模型，并编程求解辊系弹性变形，分析不同弯辊力、窜辊量以及带材宽度对辊系弹性变形的影响。实验结果表明：随着工作辊弯辊力和板宽度的增加，组合式支承辊辊间压扁产生由中问凸到中间凹的变化，且横向分布趋于均匀，随着工作辊窜辊量的增加，辊间压扁出现非对称分布，且非对称程度逐渐增大，窜辊量为100mm时左右两端的辊间压扁差值超过30pm；弯辊力变化和窜辊量对组合式支承辊挠度的影响分别不超过0．7u(10×10N)和0．8gm／100mln，带材宽度变化

3、对挠度的影响达1．8pm／100113111。关键词：组合式；支承辊；装配凸度；弹性压扁；挠度中图分类号：TG335．4文献标志码：A文章编号：1672—7207(2013)06—2298—06MathematicalmodelofelastiCdeformationofcoldreductionmillequippedwithcompositeback—uprollDONGYonggang，SUYulong，ZHANGYanyan(1．CollegeofMechanicalEngineering，YanshanUniversity

4、,Qinhuangdao066004，China；2．StateEngineeringTechnologyCenterofEquipmentandProcessingaboutPlateandStripColdRolling，YanshanUniversity,Qinhuangdao066004，China)Abstract：Forsolvingtheelasticdeformationofthefour-highcoldstripmillequippedwiththecompositeback-uproll，therollslee

5、veandrollmandrelwerestudiedbythediscretesegmentindividually,thentheassembledcrownoftherollsleeveandtheelasticflatteningbetweentherollsleeveandrollmanglewereconsidered，andthemodelofelasticdeformationofcoldstripmillwasderivedbvtheinfluencefunctionmethodaccordingtothedefl

6、ectionconcordanceprinciDlebetweentherollsleeveandrollmandrelandworkingrollandtheforceequilibriumcondition．Moreover，thesolutionmatrixwaslistedandthesolvingprogramwascompiledtosolvetheelasticdeformationofcompositeback—uprollandtheinfluencesofbendingforcecrossslidingvalue

7、ofworkrol1andwidthofstripontheelasticdeformationwereanalyzedbycompararingitwiththatofintegratedback—uprol1．Theresearchresultsindicatethattherollflatteningdistributionalongthelateraldirectionchangesfromtheconvexstyletotheconcavestyleonthemiddleregionofcompositeback—upro

8、llwiththeincreaseofthebendingforceandstripwidth，andtherollflatteningdistributionbecomesmoreasymmetrywiththeincreaseof