摘要自动回转刀架是数控机床的重要组成部分，它有效地提高了劳动生产率，缩短了生产准备时间，消除人工误差提高加工精度和加工精度的一致性等。但是传统的普通车床换刀的速度慢、精度不高，生产效率低，不能适应现代化生产的需要。所以为了提高生产率、改善产品质量以及改善劳动条件必须对自动回转刀架进行改进。本文对数控车床自动回转刀架的机电系统的相关内容进行分析，研究数控车床刀架的组成和工作原理，对普通机床的换刀装置进行改进，使该装置具有自动松开、转位、精密定位等功能。此次主要完成自动回转刀架的机械部分和电气部分的设计。机械部分为对其组成的各个机械部件进行计算与选用，电气部分为编制刀架自动转位控制软件。设计的数控換刀装置功能更强，换刀装置通过刀具快速自动定位，可以提高数控车床的效率，缩短加工时间；同时其可靠性更稳定，结抅简单。关键词:自动回转刀架，换刀装置，机电系统，电气控制DesignofautomaticturretmechanicalandelectricalsystemofCNClathesAbstractTheautomaticturretisanimportantpartofCNClathe.Itimprovedlaborproductivityandshortentheproductiontime,eliminatehumanerror,theimprovementofthemachiningaccuracyandconsistencyofprecision.Thoughconventionalordinarylathetoolchangeslowly,lowaccuracy,lowproductivity.Itcannotadapttotheneedsofmodernproduction.Therefore,wemustbeimprovedtheautomaticturretinordertoincreaseproductivity,improveproductqualityandimproveworking.ThisrotarytoolholderforCNClatheelectricalandmechanicalsystemsrelatedcontentstudy,studythecompositionandworkingprincipleofCNClathesturretandimprovethetoolchangertheofgeneralmachinetools,sothatthedevicehasanautomaticrelease,transfer,precisionpositioningandotherfunctions.Thistimeweshouldcompletionofthedesignofautomaticturret’sthemechanicalpartsandelectricalparts.Mechanicalpartiscomposedofvariousmechanicalcalculationandselectionofparts,electricalpartsispreparationoftheturretautomaticallytransferofthecontrolsoftware,automaticindexingturret.DesignofmorepowerfulCNCtoolchanger,toolchangerquicklythroughtheautomaticpositioningtoolcanimprovetheefficiencyofCNClathesandshortentheprocessingtime;whileitsreliabilityismorestable,thestructureissimpler.Keywords:AutomaticturretToolchangerElectro-MechanicalSystemsElectricalcontrol目录1绪论.................................................................................................................11.1自动回转刀架的设计背景..........................................11.2自动回转刀架的市场分析..........................................21.3设计自动回转刀架的意义..........................................22自动回转刀架总体设计............................................................32.1总体方案的确定......................................................................32.2减速机传动机构的确定.................................................42.3刀体锁紧与精定位机构的确定............................52.4抬起机构的确定......................................................................53自动回转刀架机械部分设计..............................................63.1自动回转刀架的工作原理..........................................63.2蜗轮及蜗杆的设计及校核..........................................83.2.1蜗杆的选型.............................................................................93.2.2蜗杆副的材料...................................................................103.2.3按齿面接触疲劳强度进行设计.................103.3蜗轮及蜗杆的主要参数与几何尺寸..........123.4螺杆的主要参数与几何尺寸................................1...
