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二维步进单片机控制工作台机械系统设计毕业论文.doc

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二维步进单片机控制工作台机械系统设计毕业论文.doc

徐州工程学院毕业设计论文II摘要本系统采用一级齿轮减速,带动丝杠传动,通过螺母的直线移动带动工作台运动。根据脉冲当量、步矩角、丝杠导程来确定齿轮的传动比,根据负载转矩的大小来校核丝杠传动的强度。单片机控制二维工作台是众多控制机械传动方法的一种,它利用单片机发出指令控制步进电机的转角和转速,进而控制XY工作台两方向的移动,实现画线,移动物体等功能,常用于试验教学。单片机控制二维工作台主要由三部分组成工作台及传动支撑部分,减速装置,控制部分及电机组成。单片机控制的XY工作台系统可以设计为开环,半闭环和闭环伺服系统三种。本设计采用开环伺服系统,通过单片机控制步进电动机的驱动,经传动机构动带动工作台的运动。系统没有检测装置。机械结构设计首先根据工作台的最大载荷,选取导轨副,设计工作台,然后进行结构设计,受力分析,转矩计算,画出工作台的装配草图,再选择步进电动机的型号,进而设计选择滚珠丝杠,最后设计出XY工作台,画出其装配图。关键词工作台步进电机脉冲当量步距角徐州工程学院毕业设计论文IIIAbstractSCMcontroloftheXYtablesystemcanbedesignedfortheopenloop,semiclosedloopsystemandclosedloopservothree.Idesignisopenloopservosystemsusingthesteppermotordrivenbythesteppermotorcontrolmicrocontrollerdriven,drivenbythetransmissionmechanismdynamictableofthecampaign.Systemisnotdetectingdevice.Mechanicalstructuraldesignofthefirsttableunderthemaximumload,selecttherailsofthedesigntable,andthenthestructuraldesign,mechanicalanalysis,torque,theassemblytabletodrawthedraft,thenselectthetypesteppermotor,therebyDesignchoicesballscrew,thefinaldesignXYtable,drawtheirassembly.Thesystemusesageartoreducespeedtransmissiondrivenscrew,nutstraightthroughmobileworkstationdrivencampaign.Accordingtopulseequivalent,stepmomentKok,screwleadtodeterminethegeartransmissionratio,accordingtothesizeofloadtorquethanthestrengthofthescrewdrive.SCMcontroloftwodimensionaltableofthemanymethodsofcontrolofamechanicaltransmission,itissuedadirectivebySCMsteppermotorcontrolandthespeedofrotation,therebycontrolthedirectionofthetwoXYtablemovement,anddrawingaline,movingobjects,Andotherfunctions,commonlyusedinthetrialofteaching.SCMcontroloftwodimensionaltablemainlyconsistsofthreepartstransmissionandsupportofthetable,decelerationdevices,motorcontrolpartsandcomponents.Keywordstablesteppermotorcontrolmicrocontrollerdrivenpulseequivalentstepmomentkok徐州工程学院毕业设计论文I目录1绪论..............................................................................................................................................11.1课题研究的背景....................................................................................................................11.2工作台的分类........................................................................................................................11.3本设计工作台的作用和特点................................................................................................31.4步进电机的发展现状............................................................................................................31.5单片机的发展现状................................................................................................................52方案原理的设计..........................................................................................................................62.1总体方案的选择和说明........................................................................................................62.2总体方案实现的系统组成框图............................................................................................73各零件的设计..............................................................................................................................83.1步进电机的设计....................................................................................................................83.1.1步进电机的组成及工作原理..........................................................................................83.1.2步进电机的选择..............................................................................................................93.1.3步进电机的校核.............................................................................................................93.2减速器设计..........................................................................................................................103.2.1主动齿轮的选择与计算................................................................................................103.2.2从动齿轮的选择与校核................................................................................................133.2.3轴的设计........................................................................................................................133.3轴承的设计..........................................................................................................................163.3.1小轴两端轴承的选择和计算........................................................................................173.3.2大轴两端轴承的选择和计算........................................................................................183.4联轴器的设计......................................................................................................................193.4.1步进电机输出轴与小轴之间联轴器的选择与计算....................................................193.4.2大轴和滚珠丝杠间联轴器的选择和计算....................................................................203.5键的设计..............................................................................................................................213.6丝杠的设计..........................................................................................................................223.6.1丝杠的特点....................................................................................................................223.6.2丝杠的选择....................................................................................................................233.6.3丝杠的校核计算............................................................................................................233.7导轨的设计.........................................................................................................................253.7.1直线滚动导轨的选型....................................................................................................26徐州工程学院毕业设计论文II3.7.2直线滚动导轨的校核计算............................................................................................273.8支座的特点及材料组成......................................................................................................29结论...............................................................................................................................................32致谢...............................................................................................................................................32参考文献.......................................................................................................................................34附录................................................................................................................错误未定义书签。

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