塑料斜齿轮旋转脱螺纹注塑模具设计

编号：毕业设计说明书题目：塑料斜齿轮旋转脱螺纹注塑模具设计学院：国防生学院专业：机械设计制造及其自动化学生姓名：柯招军学号：1000110104指导教师单位：机电工程学院姓名：曹泰山职称：讲师题目类型：理论研究实验研究工程设计工程技术研究软件开发2014年5月4日摘要伴随着全球性经济发展，新技术革命浪潮不断的突破与发展，跨越性的技术发展已经成为推动世界经济增长的重要因素。市场经济的不断繁荣，极大地促进了对体积小，工业产品的品种多，低成本，高品质的方向发展。为了提高生产周期的市场竞争力的核心产品的要求越来越高，开发周期短，因此对各种产品的制造的关键技术及设备，模具的要求也越来越严格和苛刻的。模具是基础工业之一。随着市场经济全球化趋势和各种高新技术的迅猛发展，快速经济模具被赋予了新的内涵和新的任务，种类的激增，促使快速经济制模材料向着多品种系列化迈进，不断促使工艺有新突破和发展。鉴于商品经济的快速发展，产品换代更新的加速，以及市场竞争愈发激烈，都愈发高的刺激着快速经济制模技术朝着短周期、低成本、高质量及高制造精度等方向发展。鉴于它能够使企业获得更大的市场，创造更大显著的经济效益，因此愈发受到企业家的垂青以及获得相关领导部门的政策资金的支持。鉴于快速发展的高新技术以及各种技术的综合运用，未来必定会产生新型节能省材的快速制模技术来适应社会生产中差异化需求。此次毕业设计是对塑料斜齿轮注塑模具设计，难点在于实现自动旋转脱螺纹功能。本设计有两大亮点，一是使用齿轮齿条传动机构来实现测抽芯，二是用轴承使型腔旋转来实现脱螺纹设计。因模具中有多处需要配合，可能使模具在制造和装配方面有些难度。关键词：模具；斜齿轮；结构设计；注射模；型腔AbstractWiththeglobaleconomicdevelopment,newtechnologyrevolutioncontinuedbreakthroughsanddevelopment,leapfrogtechnologydevelopmenthasbecomeanimportantfactorinpromotingworldeconomicgrowth.Continuedprosperityofthemarketeconomy,whichgreatlypromotedtosmall,multi-varietyofindustrialproducts,low-cost,high-qualitydirection.Inordertoenhancethecoreproductsinthemarketcompetitivenessoftheproductioncycle,andincreasinglydemandingshorterdevelopmentcycle,andthereforethekeytothemanufactureofvariousproducts,technologyandequipment-moldrequirementsareincreasinglystringentanddemanding.Moldisoneofthebasicindustries.Withtherapiddevelopmentofeconomicglobalizationandavarietyofhigh-techmarkets,rapideconomicmoldwasgivenanewmeaningandanewtask,thetypeofsurge,promptingrapideconomicmodelingmaterialmovingtowardmulti-varietyseries,continuetopromotetechnologybreakthroughsanddevelopment.Giventherapiddevelopmentofthecommodityeconomy,acceleratetheupgradingproducts,andmarketmorecompetitive,areincreasinglyhightostimulaterapideconomicmodelingtechniquestowardsshort-cycle,low-cost,high-qualityandhighmanufacturingprecisiondirection.Givenitsabilitytoenableenterprisestogainalargermarket,creatinggreatersignificanteconomicbenefits,andthereforeincreasinglyfavoredbytheentrepreneursandaccesstofundingtosupportpoliciesrelatedtotheleadershipdepartment.Giventherapiddevelopmentofhigh-techandcomprehensiveuseofvarioustechnologies,thefuturewillcertainlygeneratenewenergy-savingmaterialsforrapidtoolingtechnologytomeetthesocialneedsofthedifferenceinproduction.Thegraduationprojectisaplasticinjectionmolddesignhelicalgear,thedifficultyliesofftheautomaticrotationofthethreadedfunction.Thisdesignhastwobrightspots,oneusingrackandpinionmechanismtoachievemeasuredPulling,twobearingssothatthecavityisrotatedtoachievethede-threaddesign.Becausetherearemanydiewithblood,maycausesomedifficultyinmoldmanufacturingandassemblyareas.Keyword:mold;bevelwheel;structuraldesign;plasticsinjectionmold;cavity目录引言...........................................................11塑件（斜齿轮）的分析........................................31.1塑件（ABS）的三维模型.................................................31.2塑料的基础知识与应用..................................................41.3ABS塑料..............................................................41.3.1塑料ABS的基本概念..................................................41.3.2塑料ABS的特性......................................................51.3.3塑料ABS的成型特性及成型条件........................................61.3.4塑料ABS的成型条件..................................................61.4塑件结构工艺性要求的了解及分析........................................71.5脱模斜度［1］...........................................................71.6塑件的壁厚［1］.........................................................71.7圆角..................................................................82注射机的选择................................................93型腔数目的决定.............................................104成型零件设计................................错误!未定义书签。4.1确定型腔壁厚..........................................错误!未定义书签。4.2动模板厚度的计算......................................错误!未定义书签。4.3分型面的确定［1］.......................................错误!未定义书签。4.4排气系统的设计........................................错误!未定义书签。4.5成型零件的结构设计....................................错误!未定义书签。4.5.1成型凹模的结构设计..................................错误!未定义书签。4.5.2成型凸模的结构设计..................................错误!未定义书签。4.5.3型腔尺寸计算........................................错误!未定义书签。5浇注系统设计................................错误!未定义书签。5.1主浇道（浇口套）的设计................................错误!未定义书签。5.2浇口的设计［1］........................................................205.3定位圈的选择.........................................................206模具温度调节系统的设计.....................................216.1模具温度调节对塑件质量的影响.........................................216.2加热系统的设计.......................................................216.3冷却系统设计.........................................................137脱模机构的设计.............................................137.1推管脱模机构设计.....................................................137.2内螺纹抽芯脱模机构的设计.............................................147.2.1螺纹型芯的设计.....................................................157.2.2传动齿条的设计.....................................................168复位机构的设计和选择...................................