数控车床主传动设计[1]VIP免费

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JIFCNC-B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AbstractNClathecandoboring,facing,drillingandReaminginadditiontoturning.Theuseoflathesintheproductionthantheothertypesofmachinetoolsandmore.Andcomparedtoothertypesofmachinetools,lathesintheproductionisthemostwidelyused.Inthisdesign，thedevelopmentandcurrentsituationofNCmachineinChinawasintroducedandaseriesofproblemswerepresented.ThedevelopmenttrendtoNClathewasdiscussed.SomecountermeasureswaspresentedforthedevelopmentofNCmachineinChinaandthentheheadstockofJIFCNC-BNClathehasbeencalculatlydesigned.Headstocksiscomposedofthehollowspindlewhichisinstalledinprecisionbearingsandaseriesoftransmissiongears.Thespindlecanobtainanyspeedinthespeedrangetomeettheprocessingrequirementsofcutting.Atpresent,thedevelopmenttrendistoprovideacontinuouslyvariablespeedthroughtheelectricalormechanicaldevices.VariableFrequencyMotorconveysthepowerthroughbeltdriveandasetoftransmissiongears.ThespeedrangeofVariableFrequencyMotorisusually3-5,whichisdifficulttomeetthespeedrangerequirementsofthespindlespeed;Thetransmissiongearsistoexpandthescopeofavariable-speedtomeetthespeedrangeofthespindleInaddition,inthisdesignthedesignofthebeltdrivehasbeenchangedfromtheoriginalunloadingstructureintotheloadingstructure,transmissedtheforcetothelathebodysothatinputshaftisonlyforcedtorque,improvedtheforcingstateoftheinputshaft.Keywords:headstocks,acontinuouslyvariablespeed,transmissionSysterm目录摘要..........................................................ⅠABSTRACT（英文摘要）..........................................Ⅱ目录.........................................................................................................Ⅲ第一章绪论.....................................................11.1数控车床主传动系统的要求...................................11.2数控车床主传动系统方式.....................................11.3国内外数控车床主传动系统的发展..............................21.3.1设数控车床发展总趋势.................................21.3.2确中国数控车床发展的主要问题........................4第二章变速主传动系统法案的制定.................................62.1主传动技术指标的制定......................................72.1.1动力参数的确定计的数...................................72.1.2主运动调速范围的确定.................................82.1.3主轴计算转速的确定...................................92.2变速主传动系统的设计......................................102.2.1确定传动方案...........................................102.2.2转速图的拟定........................................112.2.3拟定传动变速系统图..................................12第三章传动系统零部件设计.......................................153.1传动皮带的设计...