CK6140数控车床主传动系统设计——毕业论文

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1、河南科技大学毕业论文题目：CK6140数控车床主传动系统设计专业：机械设计制造及其自动化班级：指导老师：姓名：学号：摘要摘要数控车床不仅能够车外圆还能用于镗孔、车端面、钻孔与铰孔。与其他种类的机床相比，车床在生产中使用最广。本论文首先介绍了我国数控机床发展的过程与现状,并分析了其存在的问题;对数控机床的发展趋势进行了探讨；并对ck6140数控车床主轴箱传动系统进行了设计与计算。主轴箱有安装在精密轴承中的空心主轴和一系列变速齿轮组成。数控车床主轴可以获得在调速范围内的任意速度，以满足加工切削要求。目前，数控车床的发展趋势是通过电气与机械装置进行无级变

2、速。变频电机通过带传动和变速齿轮为主轴提供动力。通常变频电机调速范围3—5，难以满足主轴变速要求；串联变速齿轮则扩大了齿轮的变速范围。本设计的不足之处由于受到传递转矩的限制而无法采用电磁离合器进行变速换挡，而采用了液压拨叉进行变速换挡，增加了机床的复杂性，必须将数控装置的电信号转换为电磁阀的机械动作，从而增加了变速机构的中间环节，相应地带来更多不可靠的因素。关键词：数控车床，无级调速，传动系统，变速机构IIAbstractAbstractNClathecandoboring,facing,drillingandReaminginadditionto

3、turning.Theuseoflathesintheproductionthantheothertypesofmachinetoolsandmore.Andcomparedtoothertypesofmachinetools,lathesintheproductionisthemostwidelyused.Inthisdesign,thedevelopmentandcurrentsituationofNCmachineinChinawasintroducedandaseriesofproblemswerepresented.Thedevelopm

4、enttrendtoNClathewasdiscussed.SomecountermeasureswaspresentedforthedevelopmentofNCmachineinChinaandthentheheadstockofck6140NClathehasbeencalculatlydesigned.Headstocksiscomposedofthehollowspindlewhichisinstalledinprecisionbearingsandaseriesoftransmissiongears.Thespindlecanobtai

5、nanyspeedinthespeedrangetomeettheprocessingrequirementsofcutting.Atpresent,thedevelopmenttrendistoprovideacontinuouslyvariablespeedthroughtheelectricalormechanicaldevices.VariableFrequencyMotorconveysthepowerthroughbeltdriveandasetoftransmissiongears.ThespeedrangeofVariableFre

6、quencyMotorisusually3-5,whichisdifficulttomeetthespeedrangerequirementsofthespindlespeed;Thetransmissiongearsistoexpandthescopeofavariable-speedtomeetthespeedrangeofthespindle.Disadvantagesofthisdesignbecauseofthetransmissiontorquelimitandcannotuseelectromagneticclutchtoshiftg

7、ears,andadoptsthehydraulicforkareshifting,machinetoolsincreasedcomplexity,wemustconvertelectricalsignalsintomechanicalactionsofnumericalcontroldeviceofelectromagneticvalve,therebyincreasingtheintermediatelinktransmissionmechanism,accordinglybringmoreunreliablefactors.Keywords:

8、CNClathes,acontinuouslyvariablespeed,transmissionSysterm,Tran