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辽宁科技学院本科生毕业设计(论文)第页1目录保鲜膜机设计............................................................................................................................3摘要............................................................................................................................................3ABSTRACT..............................................................................................................................4THEHEADMETALCLIPPERDESIGN............................................................................41绪论.........................................................................................................................................51.1课题选择的背景和目的..................................................................................................51.2保鲜膜机国内外发展现状..............................................................................................61.3保鲜膜机的现状..............................................................................................................71.3.1保鲜膜机在车间布置和作用.................................................................................................................71.3.2保鲜膜机的类型和特点...................................................................................................71.3.3保鲜膜机研究的内容和方法................................................................................................................82方案的选择与评述..............................................................................................................102.1方案选择........................................................................................................................102.2方案评述........................................................................................................................103电机的选择..........................................................................................................................123.1剪切力的计算................................................................................................................123.2剪切机的扭矩计算........................................................................................................123.3剪切时,转股稳定运转转速Hn......................................................................................133.4电机型式及电机容量的选择........................................................................................134主要零件的强度计算........................................................................................................164.1减速机的计算................................................................................................................164.1.1减速机的传动比分配..............................................................................................................................164.1.2减速机齿轮设计.........................................................................................................................................164.1.3齿轮轴的设计计算..................................................................................................................................244.2剪刃的设计....................................................................................................................294.2.1材料的选择....................................................................................................................................................294.2.2剪刃的结构设计........................................................................................................................................294.3转股轴承的选择及校核................................................................................................294.4侧隙调整机构的设计....................................................................................................314.5电动机的起动力矩的验算............................................................................................324.5.1系统飞轮力矩的计算...............................................................................................................................324.5.2起动时间的计算........................................................................................................................................334.5.3起动转角的校核........................................................................................................................................335润滑方法的选择..................................................................................................................375.1减速机润滑方法及润滑油的选择................................................................................37辽宁科技学院本科生毕业设计(论文)第页25.2保鲜膜机的润滑............................................................................................................376试车方法和对控制的要求...................................................................................................386.1试车要求........................................................................................................................386.2对控制系统的要求........................................................................................................387设备可靠性与经济评价.......................................................................................................397.1机械设备的有效度........................................................................................................397.2投资回收期....................................................................................................................39专题电动机选择与探讨........................................................................................................411.三相异步电动机的旋转原理.........................................................................................422.同步电动机在结构上大致有两种...................................................................................433.电机固有步距角...............................................................................................................444.步进电机的一些特点.......................................................................................................455.电动机的润滑...................................................................................................................46结论..........................................................................................................................................47致谢..........................................................................................................................................48参考文献..................................................................................................................................49辽宁科技学院本科生毕业设计(论文)第页3保鲜膜机设计摘要保鲜膜机是1700热连轧机的单体设备,它的用途是切头、切尾,出现卡钢事故时,将轧件剪断,处理卡钢事故。有时也可剪切定尺,检查轧件的质量。本溪钢铁公司1700热连轧厂的保鲜膜机是为满足生产要求制造的,本设计就是改造切头、切尾保鲜膜机及其主传动系统。重新选择主电机,新设计的减速机利用原剪切机的底座,采用双电机,把剪切机构的曲柄摇杆式改成转鼓式,减少了动力矩,提高了剪切质量。设计中,进行剪切力的计算,选择主电机的容量,进行轴、齿轮的设计计算,进行剪切机构的改进设计,取得较好的效果,有一定的经济效益。该切头保鲜膜应用1700连轧厂,切头和切尾,以及事故处理也可作为1700横切机构设计参考。关键词剪切机,转股,切头,切尾辽宁科技学院本科生毕业设计(论文)第页4AbstractTheHeadMetalClipperDesignTheheadmetalclipperis1,700hotcompaniesrollingmillsmonomerequipment.Itsuseiscutsawaytheforehead,cutsawaythetail,Whenitappearcatchesthesteelandironaccident,Itcutsbytherollingpart,processingcatchesthesteelandironthematter.Sometimesalsomaycutthesizewhichassigns,inspectsisrolledoverthepartthequality.TheBenxiironandsteelcompany1,700heatcontinuouslyrolloverthemanufacturingplanttocutawaytheforeheadclipperareforsatisfytheproductionrequestmanufacture,Thisdesignisthetransformationcutsawaytheforehead,cutsawaytherearpartclipperanditsthemaintransmissionsystem.Rechoosesthemainelectricalmachinery,thenewdesigndeceleratesthemachineuseoriginallytocutthemachinethefoundation,usesthedoubleelectricalmachinery,cutstheorganizationthecrankrockertypetoaltertotherotordrumtype,reducedthekineticmoment,enhancedhascutthequality.Inthedesign,carriesontheshearingforcethecomputation,thechoicemainelectricalmachinerycapacity,carriesontheaxis,thegeardesigncalculation,carriesoncutstheorganizationtheimprovementdesign,obtainsabettereffect,hasthecertaineconomicefficiency.Shouldcutawaytheforeheadtoflycutsshouldbeusedin1700continuouslyrolloverthemanufacturingplant,cutsawaytheforeheadandcutsawaytherearpart,aswellastheaccidentprocessesalsomaytake1,700lateralshearsorganizationsdesignreference.Keywordsthecuttingmachine,therotordrumtype,cutsawaytheforehead,cutsawaythetail
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