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两轴实验型数控系统的设计说明书.doc

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两轴实验型数控系统的设计说明书.doc

中文摘要I目录摘要.....................................................................................................................IABSTRACT(英文摘要).....................................................................................II目录.....................................................................................................................III第一章引言.......................................................................................................11.1课题的背景.................................................................................................11.2课题的意义.................................................................................................2第二章两轴实验型数控系统的总体设计...........................................................32.1数控系统总体方案的设计.......................................................................32.2两轴实验型数控系统的方案拟定...........................................................32.3方案的比较与选择...................................................................................42.4两轴实验型数控系统的方案拟定...........................................................4第三章机械部件的计算和选择...........................................................................53.1切削力的计算...........................................................................................53.2机械构件的选择.......................................................................................83.2.1电动机的选择.......................................................................83.2.2丝杠的选择..........................................................................123.2.3轴承的选择..........................................................................173.2.4导轨的选择..........................................................................183.2.5联轴器的选择.......................................................................213.2.6传动装置的选择...................................................................213.3Y轴进给系统设计实例..............................................................................26第四章虚拟样机的制作.......................................................................................274.1微型数控铣床部分零件图.......................................................................274.1.1减速箱齿轮..........................................................................274.1.2工作台................................................................................284.1.3滚珠丝杠.............................................................................28中文摘要II4.1.4套筒式联轴器.......................................................................294.1.5横梁...................................................................................294.1.6滚动轴承............................................................................304.1.7轴......................................................................................304.2两轴实验型数控系统总装配图..................................................................31第五章控制系统...................................................................................................325.1步进电机驱动器的选择...........................................................................325.2变频器的选择...........................................................................................355.2.1外部结构.............................................................................365.2.2运行方式.............................................................................375.3定位模块的选择..............................................................................................375.4其他辅助电路的选择....................................................................................385.4.1越程报警电路..........................................................................................385.4.2掉电保护电路........................................................................................38结论.........................................................................................................................39参考文献..........................................................................................40致谢及声明......................................................................................41中文摘要III摘要论文介绍了两轴实验型数控系统的设计。通过对各种实验型设备的调研,了解到现阶段我国用于实验型设备的数控系统设备的台套种类、数量与学生规模反差较大的现况,设备落后,加之由于各种客观和主观的原因,全国大专院校机电类学生工程实践能力普遍较差,其动手能力与理论更是难结合在一起,严重影响到实训、培训效果。主要成果是⑴本设计对已有的设备进行分析,结合实际教学要求,进行各零部件的设计计算,并最终进行校核。该设备可主要应用于高校及职业技术学校中相关专业的数控教学,它具有体积小、价格低、功能完善、安全系数高、性能优越等系列优点⑵在设计过程中,同时进行了电器方面的改进,主要应用PLC进行控制,引入了数控部分,采用步进电动机,齿轮变速机构,安装了变频器、步进驱动器等设备。通过弱电控制强电,计算机数字化控制电路,并成功地实现了工作要求,使其具有能控制各进给方向电动机启停、正反转、变频调速、两轴联动等功能。在机械部分设计过程中,尽量考虑节约成本和可互换性,在保证X、Y进给选用相同的步进电机、滚珠丝杠等零部件。关键词数控铣床,两坐标,实验型AbstractThispaperintroducesthetwocoordinateNumericalcontrolmillingmachinetooldesign.StudyontheNumericalcontrolmillingmachinetooloftheexcitedstates,Knowthatthetotalsituationis,ainterplantingofthenumericalcontrolequipment,quantityandstudentsscalehaverelativelylargecontrast.Themachinethatusedcannotcatchupwiththeneed,Aswellasothercourse,Studentsfewcanmovethecellphoneindependently,influencetraininginfact,resultoftrainingseriously.中文摘要IVThemainresultsisFirst,bydoingansysofthemachineexcited,connectingtotherequiresinthestudy.Dothedesignofsomepartsandrecheckagain.Teachingpersonwhotestminiaturenumericalcontrolmillingmachineapplyuniversityandvocationaltechnicalschoolnumericalcontrolteachingandnumericalcontrolofworkersofrelevantspecialitytrainmainly.Ithassmall,thepriceislow,high,suchserialadvantagesasperformanceissuperiorofsafetycoefficientwithperfectfunction.Second,Inthenumericalcontroltransformationprocess,alsodotheelectronicmachinestransformationandtheresearch,themachinemainlycontrolledbythePLC,increasestheprimarydevice,tothemachinepart,theelectricityhaspartiallycarriedontheoptimizeddesign,introducedthenumericalcontroltobepartial,usesstepbystepstheelectricmotor,thegearchangingorganization,VFOandthestepmotordriverandsoon.theweakelectricitycontrolledthestrongelectricity,thecomputernumericalcontrolelectriccircuit,successfullyhasrealizedthemodificationrequirement,enableittohavetheact,rotateonesideandotherside,thespeedchangedbyVOF,andsoonthefunction.Inthemachinepartdesignprocess,Alsoconsiderthemoneyandretransferability,makethesamethestepmotorandtheballscrewshaftandsomeotherparts.KeywordsNumericalcontrolmillingmachine,miniature,twocoordinate.

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