卧式钢筋切断机设计毕业设计.doc
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卧式钢筋切断机设计
卧式钢筋切断机设计
摘要：
本课题设计建筑上的卧式钢筋切断机的工作原理是：
采用电动机经一级三角带传动和二级齿轮传动减速后,带动曲轴旋转,曲轴推动连杆使滑块和动刀片在机座的滑道中作往复直线运动,使活动刀片和固定刀片相错而切断钢筋。
根据电机的工作环境选择电动机类型，采用卧式安装，防护式电机，鼠笼式三相异步电动机。
选择三级减速，先是一级带减速，再两级齿轮减速。
一级带传动，它具有缓冲、吸振、运行平稳、噪声小、合过载保护等优点，并安装张紧轮。
两级齿轮减速，齿轮传动可用来传递空间任意两轴间的运动和动力，并具有功率范围大，传动效率高，传动比准确，使用寿命长，工作安全可靠等特点。
动力由电动机输出,通过减速系统传动,把动力输入到执行机构。
由于传动系统作的是回转运动,而钢筋切断机的执行机构需要的直线往复运动,为了实现这种转换,可以采用曲柄滑块机构,盘行凸轮移动滚子从动件机构,齿轮齿条机构。
本课题采用曲柄滑块机构作为本机械的执行机构 。
关键词：
切断建筑钢筋齿轮曲柄滑块lietypesteelcuttingmachines’designing
Abstract：
Thisarticleintroducesakindofarchitecturallietypesteelcuttingmachines.Itsoperatingprinciplesare:
Ituseelectricmotorsleveltrianglebelttransmissionandsecondarygeartransmissiontoslowdown.Then,itdrivesthecrankrotate,Thecrankconnectedtoslideblockandmovingbladesintheslipperywaymakethebackandforthstraightlinesport,makesthemovingbladesandthefixedbladeshearandcutsteel.
Accordingtotheworkingenvironmentchoicethetypeofelectricmotors,usinghorizontalinstallation,protectionoftheelectrical,squirrel-cagethree-phaseasynchronousmotor.Optionthreeslowdown,
firstlevelbeltslowdown,followedbythesecondarygeardeceleration.Firstlevelwiththeintroductionofautomated,becauseithasabuffer,absorbshockandoperatesmoothly,smallnoise,andcanprotecttheoverloading.Thenintroduceasecondarygeardecelerationslowdown,becausegeartransmissioncanbeusedtotransmitarbitraryspacebetweenthetwoaxismovementandmomentum,andthescopeofpower,transmissionefficienttransmissionaccurately,longusinglife,suchassafeandreliablecharacter.Poweroutputbyelectricmotorsthroughslowdowntransmissionsystemtoimportpowertotheexecutivebody.Asthesystemmakerotationmovement,Thesteelcuttingmachineneedsthebackandforthstraightlinesport,inordertoachievethistransformation,wecanusecslider-crankinstitutionsorgearandrack.Idecidedtoconsiderrealisticconditionsusingslider-crankastheexecutingmachinery.
Keywords：
cuttingarchitecturalreinforcingsteeldargearslider-crank
目录
第1章引言...............................................................................................................................1
1.1概述..................................................................................................................................1
1.2题目的选取......................................................................................................................1
1.3钢筋切断机的原理..........................................................................................................1
第2章电机选择........................................................................................................................2
2.1切断钢筋需用力计算......................................................................................................2
2.2功率计算..........................................................................................................................3
第3章传动结构设计................................................................................................................5
3.1基本传动数据计算..........................................................................................................5
3.1.1分配传动比.....................................................................................................................5
3.1.2计算机构各轴的运动及动力参数 ........................................................................5
3.2带传动设计.......................................................................................................................6
3.2.1带型的确定.....................................................................................................................6
3.2.2带轮基准直径.................................................................................................................6
3.2.3带速的确定.....................................................................................................................6
3.2.4中心距、带长及包角的确定.........................................................................................6
3.2.5确定带的根数.................................................................................................................7
3.2.6张紧力............................................................................................................................7
3.2.7作用在轴上的载荷.........................................................................................................7
3.2.8带轮结构与尺寸见零件图.............................................................................................7
3.3齿轮传动设计...................................................................................................................8
3.3.1第一级齿轮传动设计......................................................................................................8
3.3.2第二级齿轮传动设计......
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