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1、兰州理工大学毕业论文论文题目：床身上最大回转直径320mm的数控车床总体设计及主轴箱设计专业名称：层次：学生姓名：完成日期：V摘要随着现代科学的进步，数控行业的飞速发展，数控车床作为主要加工手段，被广泛应用于机械制造业。因为它具有加工灵活、通用性强的特点，能适应产品的品种和规格频繁变化，能够满足新产品的开发和多品种、小批量、生产自动化的要求，并且数控车床与普通车床相比，在提高生产率、减轻工人劳动强度、降低生产成本和增加效益方面都有很大的优越性。本文对数控车床的主传动方案、总体机械结构进行了详细的设计和计算。电动机通过变速箱与主轴进行联接，使主轴的功率、扭矩特性和电机的
2、功率扭矩特性相匹配，这样适用范围就更宽，在使用方面也容易控制。本数控车床，是由无极变速电磁调速异步电动机经机械分级变速箱驱动主轴，以实现主轴的无级变速。主轴箱与变速箱为一整体，最后一级采用传动平稳可靠的斜齿轮传动，以保证主轴的旋转精度。关键词：数控车床；变速箱；主轴；无级变速VAbstractWithfastdevelopmentofsciencetechnology,Numericalcontrollatheiswidelyusedinthemechanicalmanufacturingindustry.Becauseofhavingthecharacteristi
3、csofmachingflexibility,strongversatility,itcanmeetthevarityofproductsandfrequentchangeofthespecification,andsatisfythereqanementthatthedevelopmentofnewpoducts,muchvarieties,thesmallquantities,automativeproduction,Comparedwithordinarylathe,thenumericalcontrollathehasitsgreatsuperiorityin
4、boostingproductivity,lighteningworker'slaborintensity,reducingtheproductioncostandincreasingbenefit.Theoverallmechanicalstructureofnumericalcontrollatehasbeendesignedinthispaper,mainlyfromeconomyandpracticalvalue.Themotorislinkedtospindle,makingpowerandtorsioncharacteristicofmatchtotors
5、ioncharacteristicpoweroftheelectricalmachinery.Inthiscasethescopeofapplicationiswideranditiseasytocontrolduringmachining.Horizontalfeedsystemandverticalfeedsystemaredesignedandcalculatedindetailsinthisdesign.Thisnumericalcontrollathedrivesthespindle,whichisaccomplishbyelectrodelesschang
6、edspeedelectromagneticaladjustedspeedasynchronous,andthemechanicalhierarchicalgearbox,inordertorealizetheinfinitevariable-speedsofthespindle.Spindle-boxandgearboxaremadeintoawholebody,finalclassadoptstransmissionsteadyandreliablehelicalgearstransmission,soastoensuretheprecisionofrotatio
7、nofthespindle.Theservofeedsystemadoptsthehigh-accuracyballguidescrewtransmission,soastoensurethemovementmachingaccuracy.Keyword:numericalcontrollathe；thetransmission；spindle；power；infinitevariablespeeds；servofeedsystemV目录摘要IIABSTRACTIII目录IV第1章绪论11.1课题背景11.2我国数控机床的发展1第2章数控车床简介22
