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短应力线750轧机压下部分设计说明书.doc

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短应力线750轧机压下部分设计说明书.doc

I摘要本次设计对短应力线750轧机压下部分进行了相应的设计与校核。然后,轧机的两种轧制力计算方法进行了设计比较。本轧机为为二辊卧式轧机。本设计采用直流电动机,有较大的过载能力,电动机与轧机之间有减速器。压下装置动力部分采用液压马达,传动平稳,能在较大范围内实现无级调速,能保证较高的轧制精确度。最后对轧机的润滑和维护做了简单讨论。本次设计主要的研究方法是根据轧辊孔型和轧制速度,计算轧制力,从而对轧辊进行强度和刚度的校核,确定轧辊是可用的,从而保证轧机能正常工作。在对轧辊轴承的选取,立柱的校核,压下装置的形式进行了研究,保证设计了的准确性。关键词750轧机二辊式轧机压下装置油马达轧制力IIAbstractThedesignoftheshortstressline750RollingMillforthecorrespondingpartsofthedesignandchecking.Then,thetworollingmillwasdesignedforcecalculationcomparison.Thehorizontaltworollmilltothemill.ThisdesignusesaDCmotor,alargeoverloadcapacity,betweenthemotorandreducermill.Dynamicpartofthereductiondevicewithhydraulicmotor,drivesmoothly,canrealizesteplessspeedregulationinalargerange,canensureahighrollingaccuracy.Finally,lubricationandmaintenanceofmillmadeabriefdiscussion.Themainresearchdesignisbasedrollpassandrollingspeed,rollingforcecalculation,andthusthestrengthandstiffnessofrollofthecheck,todeterminerollisavailable,thusensuringmillcanwork.Intheselectionofrollerbearings,columnsofcheck,pressuredeviceintheformofastudydesignedtoensuretheaccuracy.Keywords750rollingmilltworollmillpressureequipmentoilmotorsrollingforceIII目录摘要................................................................................................................IAbstract.......................................................................................................II第一章绪论.................................................................................................11.1.选题背景及目的.........................................................................................................11.2轧钢生产在国民经济中的主要地位与作用...............................................................11.3国内外轧钢机械的发展状况.......................................................................................21.3.1粗轧机的发展.....................................................................................................21.3.2带钢热连轧机发展.............................................................................................21.3.3线材轧机的发展.................................................................................................31.3.4短应力线轧机....................................................................................................41.4750轧机的设计简介.................................................................................................51.4.1.主传动装置.........................................................................................................61.4.2.机架横移装置...................................................................................................61.4.3.压下装置及上辊平衡装置.................................................................................61.5总体思路的选择...........................................................................................................7第二章概述及方案选择.............................................................................82.1设计的原始参数....................................................................................................82.2概述...............................................................................................................................82.3咬入条件的校核...........................................................................................................92.4轧制过程基本参数.....................................................................................................102.4.1.简单轧制过程...................................................................................................102.4.2.轧制过程变形区及其参数...............................................................................102.5轧制力的计算.............................................................................................................112.5.1方法一艾克隆德方法....................................................................................112.5.2方法二采利柯夫方法...................................................................................132.6轧辊的几何尺寸的选取.............................................................................................142.7轧制力矩的计算.........................................................................................................152.8主电动机功率的计算及选电动机.............................................................................162.8.1轧辊与电机间的效率.......................................................................................162.8.2.根据过载条件选择电动机功率.......................................................................162.9轧辊强度及刚度校核.................................................................................................182.9.1计算辊身弯曲强度...........................................................................................182.9.2计算辊颈弯曲和扭转.......................................................................................192.9.3计算辊头剪切强度...........................................................................................202.10轧辊轴承的选取.......................................................................................................212.11立柱校核....................................................................................................................222.11.1立柱危险截面强度校核.................................................................................222.11.2立柱牙型强度校核..........................................................................................23IV2.12压下装置的结构形式..............................................................................................232.13上辊平衡装置...........................................................................................................242.14轧辊的轴向调整及固定...........................................................................................24第三章润滑及维护....................................................................................263.1润滑.............................................................................................................................263.2维护.............................................................................................................................283.2.1轧机主传动装置维护.......................................................................................283.2.2在轧机维护中应用故障诊断技术...................................................................28结论.............................................................................................................31参考文献.....................................................................................................32致谢.................................................................................错误未定义书签。附件1..............................................................................错误未定义书签。附件2..............................................................................错误未定义书签。

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