冰箱门封磁条剪切系统设计说明书.doc

2008届机械设计制造及其自动化专业毕业设计（论文）I冰箱门封磁条剪切系统设计摘要剪切机是工业生产中常用的设备，广泛应用于剪切各种材料。门封磁条是门封组件中的重要组成部分。本文主要针对目前磁条剪切大多采用人工方法存在的缺点，着重对磁条的放置、输送、剪切一体化的自动化设备及相关技术问题进行了设计分析。通过查阅各类相关文献，全文叙述了冰箱门封磁条实际的生产过程、存在的问题以及剪切技术发展状况，设计了自动剪切和手工剪切两种方案，并对相应的放料机构、送料机构以及剪切机构中的零部件进行分析计算和比较，确定出在3秒钟内完成磁条准确送出和定长剪切的方案，最后做出论文总结。关键词：剪切机构，放料机构，送料机构2008届机械设计制造及其自动化专业毕业设计（论文）IITheDesignofShearingSystemforRefrigeratorMagneticDoorSealABSTRACTShearingmachineisanequipmentcommonlyusedinindustrialproduction,itiswidelyusedincuttingvariousmaterials.Thedoorsealisanimportantpartindoorsealcomponent.Inthispaper,inviewoftheshortcomingsofmanualmethodswhichcurrentlyusedinshearingoftherefrigeratormagneticdoorseal,thethesisfocusesontheautomationofthestructuraldesignontheplacement,transmissionandshearingofthemagneticstripearedesignedtogetherwiththeanalysisofrelatedtechnicalproblems.Bytheadoptionofreadingvarioustypesofrelatedliteratures,thepaperdescribestheactualproductionprocess、theexistingproblemsofthemagneticstripandthedevelopmentofsheartechnology,andtwokindsofschemesaredesigned,thatis，manualandautomaticcutting.Morover,thecorrespondingdepositionmechanism,aswellasthefeedingmechanismandtheshearingmechanismarecarriedonanalysis、calculationandcomparison，thenaprogramisidentifiedtocompletethesealssubmitingaccuratelyandlengthofshearingin3secondsandfinallycometotheconclusion.KEYWORDS:shearingmechanism,depositionmechanism,feedingmechanism2008届机械设计制造及其自动化专业毕业设计（论文）III目录第1章绪论··················································································11.1课题的提出··········································································11.2冰箱门封磁条概述································································11.2.1门封磁条的结构及性能··················································11.2.2门封磁条的保养及维护··················································31.2.3门封磁条的生产工艺·····················································41.3剪切设备的发展状况·····························································51.3.1剪切机的发展状况························································71.3.2剪切机的分类·······························································71.3.3剪切技术概述·······························································91.4本课题的主要研究工作························································121.4.1本课题的来源及类型···················································121.4.2本课题的研究目的及意义·············································121.4.3本课题主要研究内容···················································13第2章总体方案分析···································································142.1系统功能分析·····································································142.2开卷机构分析·····································································142.3送带机构分析···································································142.4剪切机构分析·····································································15第3章具体结构设计···································································173.1开卷机构设计·····································································173.2送料机构设计·····································································183.3剪切机构设计·····································································193.3.1剪切模的设计·····························································203.3.2剪切运动的设计·························································203.4气缸往复运动控制回路························································213.5气缸速度控制回路······························································222008届机械设计制造及其自动化专业毕业设计（论文）IV第4章零部件设计及计算····························································234.1电机的选取········································································234.1.1开卷电机的选取·························································234.1.2送料电机的选取·························································234.2剪切机构的设计计算···························································244.2.1冲裁力的计算·····························································244.2.2剪切气缸的设计·························································254.3凹凸模的设计计算······························································264.4齿轮的设计计算·································································274.5同步齿形带及带轮的设计计算··············································294.6轴的设计计算·····································································31总结·····························································································35致谢·····························································································36参考文献······················································································37