(毕业设计)钢筋弯曲机的结构设计

本科毕业设计(论文)题目：数控弯曲机的结构设计院（系）：机电工程学院专业：机械设计制造及其自动化班级：学生：学号：指导教师：2014年6月1数控弯曲机的结构设计摘要钢筋弯曲机是建筑工地必不可少的机械，能有效的提高生产效率，减少工人劳动强度，提高钢筋弯曲精度。本文所设计的钢筋弯曲机适用于弯曲Φ4-Φ12毫米的钢筋。相比于市场上常用的其他钢筋弯曲机，本机可弯曲建筑用钢中的长钢筋，解决了目前大多数弯曲机不能装夹、送料、弯曲连续作业的问题。本机先通过矫直机构对盘状钢筋进行矫直，再通过弯曲装置对钢筋进行弯曲，满足弯曲要求之后，切断装置进行切断，最后卸料装置进行卸料。钢筋的弯曲角度由PLC通过控制步进电机来实现，能实现弯曲角度的自动化本文对V带轮、轴和一些关键零部件进行了设计计算，并对轴、键和带等关键部件进行了力学分析计算和强度校核，表明该钢筋弯曲机完全符合设计要求。关键词：钢筋弯曲机；钢筋矫直机构；钢筋卸料机构；自动化2AStructureDesignofNumericalControlBendingMachineAbstractRebarbendingmachineisessentialforconstructionmachinery,caneffectivelyimprovetheproductionefficiency,reducetheworkerslaborintensityandimprovethebendingprecision.ThisarticlerebarbendingmachineissuitableforthedesignofbendingΦ4-Φ12mmreinforcement.Comparedwiththepracticalapplicationofallkindsofsteelbarbendingmachine,thismachinehasonebigcharacteristicwicthisabletobendsteeloflongbar,andsolvetheproblemthatmostbendingmachinecan'tmakeclamping,feedingandbendingacontinuousoperation.Firstthroughstraighteningdeviceforwirerodsteelbarstraighteningandthenbendingdeviceforsteelbarbending,andsteelcuttingdevicecutittomeetacertainlength,atlast,steelunloadingdeviceunloadsteelbarbent.TheangleisrealizedbyPLCwicthcontrollingthestepmotor,automatically.Inthispaper,theVbeltwheel,shaftandsomekeypartsaredesignedandcalculated,andtheshaft,keyandkeycomponentssuchasthemechanicsanalysisandcalculationandstrengthcheck,showthattherebarbendingmachinefullymeetthedesignrequirements.Keywords:Rebarbendingmachine,Rebarstraighteningmechanism,Rebarunloadingmechanism,Automation1目录中文摘要..................................................................1英文摘要.....................................................................................................................................21绪论...........................................................................................................................................11.1综述..................................................................................................................................11.2折弯机的发展和研究情况..........................................................................................11.2.1折弯机的国内外发展状况...............................................................................11.3课题背景.........................................................................................................................31.4研究设计内容................................................................................................................31.5研究设计路线................................................................................................................32方案的确定...........................................................................................................................12.1钢筋弯曲机的组成........................................................................................................12.2钢筋的送料机构............................................................................................................12.3钢筋的矫直机构.............................................................................................................12.3.1矫直机的工作原理............................................................................................22.3.2矫直机构的结构示意........................................................................................22.4钢筋弯曲机工作原理....................................................................................................32.4.1钢筋弯曲的角度控制...............................................................................72.5钢筋切断机构.................................................................................................................52.5.1钢筋切断原理......................................................................................................52.6钢筋弯曲机整体布局....................................................................................................63电动机的选择......................................................................................................................83.1矫直部分电机的选择...................................................................................................93.1.1钢筋受力情况分析.............................................................................................93.1.2矫直电机的确定..................................................................错误!未定义书签。3.2送料部分电机的选择....................................................................错误!未定义书签。3.3钢筋弯曲部分电机的选择...........................................................错误!未定义书签。3.3.1钢筋弯曲受力情况与计算有关的几何尺寸.................错误!未定义书签。23.3.2弯曲Ф12钢筋所需弯矩....................................................错误!未定义书签。3.3.3弯曲电动机的选择..............................................................错误!未定义书签。3.4切断电机的选择..............................................................................错误!未定义书签。3.4.1切断钢筋时受力分析..........................................................错误!未定义书签。3.4.2功率计算...............................................................................错误!未定义书签。3.4.3切断电机的选择...................................................................错误!