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汽车仪表盘的逆向设计-I-摘要汽车仪表盘不仅能反映汽车的造型风格，而且还是汽车上重要的信息显示窗口，能集中、直观、即时、准确地提供汽车在行驶过程中的各种动态状况，让驾驶人员可以通过汽车仪表不断反馈的信息，对汽车进行适时有效的控制：汽车仪表是驾驶人员与汽车进行信息交流和互动的重要界面。人们对美好事物的追求，使得现代仪表盘造型逐步注重美感。因此设计出线条优美，曲面平滑，极富动感，由自由曲面拼接而成的仪表盘成为了仪表盘发展的必然趋势。同时CAD/CAE/CAM技术的发展与应用，以及塑料模具工艺技术的改进，新材料的应用，这些都对汽车仪表盘的设计提出了新的要求。而其中的逆向设计，因能缩短设计周期降低设计成本，在汽车仪表盘的设计中得到了越来越广泛的应用。逆向设计的软件中，CATIA因其强大的曲面模块和逆向模块，备受设计者们的青睐。如何更好的逆向设计出仪表以及更加规范的逆向设计流程，正是设计者们在积极探索研究的课题。关键词：汽车仪表盘；信息显示；发展趋势；逆向设计；CATIA汽车仪表盘的逆向设计-II-AbstractCardashboards,notonlytoreflectthecar'sstyling,butalsoimportantinformationinthecarwindow,focused,intuitive,real-time,accuratedeliveryofthecarintheprocessofmovingavarietyofdynamicconditions,sothatdriverscancontinuethroughthecardashboardfeedback,timelyandeffectivecontrolofthecar:thecardashboardtothedriverandvehicleinformationcommunicationandinteractioninterface.Thepursuitofbetterthings,makingthemoderninstrumentpanelshapeandgraduallyfocusonbeauty.Designbeautifullines,smoothsurface,verydynamic,stitchedtogetherbythefreesurfaceofthedashboardhasbecometheinevitabletrendofdevelopmentofthedashboard.ThedevelopmentandapplicationofCAD/CAE/CAMtechnology,aswellasplasticmoldtechnologyimprovements,theapplicationofnewmaterials,whichareonthecardashboards,designthenewrequirements.Thereversedesign,becauseitcanshortenthedesigncycletoreducedesigncostsinthedesignofthecardashboardmorewidelyused.CATIAthereversedesignofthesoftware,becauseofitsstrongsurfacemoduleandreversemodules,muchofthedesignersofallages.Howtobetterthereversedesignoftheinstrument,aswellasmorestandardizedreversedesignflow,isthedesignerstoactivelyexploretheresearchtopic.Keywords:cardashboard;informationdisplay;trends;reversedesign;CATIA汽车仪表盘的逆向设计-III-目录摘要.....................................................................................................................................IAbstract...................................................................................................................................II1绪论....................................................................................................................................-1-1.1塑料件成型工艺.....................................................................................................-1-1.1.1塑料件的结构设计...................................................................................-1-1.1.2塑料件成型方法..........................................................................................-3-1.2逆向工程的发展概述.............................................................................................-5-1.3逆向设计软件CATIA.........................................................................................-7-1.3.1CATIA软件的简介..................................................................................-7-1.3.2CATIA的逆向设计模块..........................................................................-8-1.4本论文研究目的和工作内容.................................................................................-8-2汽车仪表盘概述.............................................................................................................-10-2.1汽车仪表盘简介................................................................................................-10-2.1.1汽车仪表盘定义......................................................................................-10-2.1.2汽车仪表盘各符号的含义.....................................................................-10-2.2汽车的组合仪表及工作原理...............................................................................-13-2.3汽车仪表盘的计流程...........................................................................................-14-2.3.1风格造型..................................................................................................-14-2.3.2结构及特征设计......................................................................................-16-2.3.3零件详细设计.........................................................................................-16-2.3.4装配设计..................................................................................................-17-2.3.5仪表板总成开发流程图..........................................................................-17-2.4汽车仪表盘的发展趋势....................................................................................-18-3汽车仪表盘的逆向设计.................................................................................................-20-3.1点云的采集..........................................................................................................-20-3.2点云的前期处理及三角化..................................................................................-21-3.3逆向建模..............................................................................................................-23-3.3.1逆向各曲面.............................................................................................-23-3.3.2带参倒角.................................................................................................-27-3.3.3实体加厚.................................................................................................-29-4设计数模的审查确定.....................................................