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天津职业技术师范大学TianjinUniversityofTechnologyandEducation毕业设计专业：材料成型及控制工程班级学号：材料0612-01学生姓名：AB指导教师：CD讲师二〇一一年六月天津职业技术师范大学本科生毕业设计鼠标底座逆向设计与模具设计Themousebasereversedesignandmolddesign专业班级：材料0612学生姓名：指导教师：讲师学院：机械工程学院2010年6月摘要随着计算机技术的迅速发展，计算机三维造型技术特别是逆向工程技术在工业上已经得到了广泛的应用。为了解决塑料产品外形设计周期长的困难，该课题研究了鼠标外形的逆向工程造型方法，并对逆向工程概念、方法进行系统的阐述，同时又以鼠标为例详细介绍了对鼠标外形进行逆向工程的步骤。将逆向工程技术应用到塑料鼠标模具的设计与制造中，从而实现注塑模的快速设计与制造。本课题主要是鼠标底座的逆向设计与模具设计,首先采用三坐标测量仪采集数据，利用UG和Imageware软件进行点云数据处理、模型重建。然后通过对塑件进行工艺的分析和比较,最终设计出一副注塑模具来生产鼠标底座塑件产品，以实现自动化提高产量。该课题从产品结构工艺性，具体模具结构出发，对模具的浇注系统、模具成型部分的结构、顶出系统、冷却系统、注塑机的选择及有关参数的校核、都有详细的设计，针对鼠标底座的具体结构，该模具是潜伏式浇口的单分型面注射模具，通过整个设计过程表明该模具能够达到此塑件所要求的加工工艺。关键词：逆向工程；点云；鼠标；注塑模具；分型面ABSTRACTWiththerapiddevelopmentofcomputertechnique,thetechnologyof3Dcomputer-aidedprototyping,especiallytheReverseEngineering,hasbeenmorewidelyusedinindustry.Inordertosolvetheplasticproductappearancedesigncyclelongdifficulties，Thisresearchamouseshapemodellingofreverseengineeringandthemethodstoreverseengineeringconcept,methods,systematicexpatiationonthemouseagainatthesametimeasanexampleofthemouseshapeintroducedindetailthestepstoreverseengineer.Willreverseengineeringtechnologyisappliedtoplasticmousediedesignandmanufacture,soastorealizetherapidinjectionmolddesignandmanufacturing.Thistopicisthebaseofthereversedesignisthemousewithmolddesign,firstadoptthreecoordinatesmeasuringinstrumentgatheringdata,usingUGandImagewaresoftwaretothepointclouddataprocessing,modelreconstruction.Thenthroughtheplasticpartsforprocessanalysisandcomparison,thefinaldesignoutapairofinjectionmoldtoproduceamousebaseplasticproduct,inordertorealizeautomationtoincreaseproduction.Thistopicfromproductstructuretechnology,basedonthemouldstructure,specifictomouldgatingsystem,thestructureofitsmoldingpart,ejectionsystem,coolingsystem,theinjectionmoldingmachineselectionandrelatedparameterchecking,havedetaileddesign,accordingtothespecificstructureofmousebasethemouldislatenttypegateofsinglepartingsurfaceinjectionmould,throughthewholedesignprocessshowsthatthemoldcanachievetherequiredplasticpartsprocessing.KeyWords：ReverseEngineering；PointCloud；Mouse；InjectionMold；PartingSurface目录1绪论.................................................................11.1选题背景及意义....................................................11.2模具的种类........................................................11.3模具的应用........................................................11.4逆向工程原理......................................................21.5逆向工程特点......................................................21.6逆向建模的一般流程图..............................................31.7逆向工程的应用领域................................................32逆向建模.............................................................42.1逆向工程一般步骤..................................................42.1.1实体三维数据的获得——扫描..................................42.1.2点云处理....................................................52.1.3曲面重构....................................................52.1.4实体建模....................................................62.2逆向工程软硬件设备................................................62.2.1扫描设备....................................................62.2.2点云曲面处理软件............................................72.2.3实体建模软件................................................92.3鼠标外形逆向开发的流程............................................92.3.1模型分析....................................................92.3.2扫描........................................................92.3.3点云数据清理...............................................102.3.4数据对齐...................................................112.3.5点云分割提取各特征的点云...................................122.3.6曲线构造...................................................132.3.7曲面构造...................................................132.3.8实体构造...................................................142.3.9鼠标其它特征创建...........................................142.3.10质量评估检测..............................................143鼠标底座塑料零件分析.................................................163.1零件的结构和特点.................................................163.2塑料件的材料.....................................................163.2.1对塑料的认识...............................................163.2.2塑料的成型工艺特点.........................................173.2.3常用塑料及特性.............................................173.2.4工程塑料（ABS）的特性及注射工艺性..........................183.3鼠标底座塑料件的参数.............................................194注射机的选用.........................................................204.1选用注射机的方法和原则...........................................204.2注射机的种类和应用范围...........................................204.3注射机的选用.....................................................204.3.1常用注射机.................................................204.4注射机参数的校核.................................................224.4.1最大注射量的校核...........................................224.4.2注射压力的校核.............................................224.4.3锁模力的校核...............................................224.4.4最大注射成型面积的校核.....................................225塑料注射模具设计..............