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ID:6742472
大小:967.00 KB
页数:32页
时间:2018-01-24
《数控车床主传动系统设计说明书》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、CK6125数控车床主传动系统设计摘要: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ck6125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
2、齿轮则扩大了齿轮的变速范围。本设计将原来的带轮不卸荷结构变为了带轮卸荷结构,使输入轴在带处只受转矩,将轴上的径向力传动到车床机体上,改善了输入轴的受力情况。关键词:主轴箱,无级调速,传动系统AbstractAbstract:NClathecandoboring,facing,drillingandReaminginadditiontoturning.Theuseoflathesintheproductionthantheothertypesofmachinetoolsandmore.Andcomparedtoothertypesofmachinetools,lathes
3、intheproductionisthemostwidelyused.Inthisdesign,thedevelopmentandcurrentsituationofNCmachineinChinawasintroducedandaseriesofproblemswerepresented.ThedevelopmenttrendtoNClathewasdiscussed.SomecountermeasureswaspresentedforthedevelopmentofNCmachineinChinaandthentheheadstockofck6125NClatheh
4、asbeencalculatlydesigned.Headstocksiscomposedofthehollowspindlewhichisinstalledinprecisionbearingsandaseriesoftransmissiongears.Thespindlecanobtainanyspeedinthespeedrangetomeettheprocessingrequirementsofcutting.Atpresent,thedevelopmenttrendistoprovideacontinuouslyvariablespeedthroughthee
5、lectricalormechanicaldevices.VariableFrequencyMotorconveysthepowerthroughbeltdriveandasetoftransmissiongears.ThespeedrangeofVariableFrequencyMotorisusually3-5,whichisdifficulttomeetthespeedrangerequirementsofthespindlespeed;Thetransmissiongearsistoexpandthescopeofavariable-speedtomeetthe
6、speedrangeofthespindle.Inaddition,inthisdesignthedesignofthebeltdrivehasbeenchangedfromtheoriginalunloadingstructureintotheloadingstructure,transmissedtheforcetothelathebodysothatinputshaftisonlyforcedtorque,improvedtheforcingstateoftheinputshaft.Keywords:headstocks,acontinuouslyvariable
7、speed,transmissionSysterm目录目录摘要IABSTRACT.II第一章前言11.1课题背景及目的11.2国内外研究现状及发展趋势11.2.1数控系统的发展趋势11.2.2我国数控车床的研究现状及发展趋势21.3课题研究内容及方法51.3.1课题研究内容51.3.2研究方法51.4论文构成5第二章主传动系统的设计62.1主传动系统的设计要求62.2总体设计62.2.1拟定传动方案62.2.2选择电机72.2.3主运动调速范围的确定92.2.4转速图11第三章传动系统零部件设计123.1传动皮带的设计和选定123.1.1
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