护罩壳冲压模具的设计与制造说明书.doc

长沙学院毕业设计(论文)摘要随着我国国民经济的迅猛发展对模具工业提出了越来越高的要求，也为其发展提供了巨大的动力。在中国，人们已经越来越认识到模具在制造中的重要基础地位，认识到模具技术水平的高低，已成为衡量一个国家制造业水平高低的重要标志，并在很大程度上决定着产品质量、效益和新产品的开发能力。作为机械类毕业设计说明书它包含了设计者的整个设计过程以及设计的最终结果，而且还简要介绍了模具零件的加工工艺方法和模具的装配、试模。本份设计说明书步骤清晰明了，设计理念新颖，具有一定的创新成分，设计过程中较多的参考了相关资料和一些设计技术人员的制造经验，并且大量采用CAD绘图软件来提高设计效率，具有一定的指导性和实用性。关键词：冷冲压模具，落料，冲孔，加工工艺，装配工艺长沙学院毕业设计(论文)ABSTRACTTherapiddevelopmentofChinasnationaleconomyinrecentyearstheindustryofmoldbytheincreasingdemands,butalsoforitsdevelopmenthasprovidedgreatimpetus.InChina,peoplehavetodieinthegrowingawarenessoftheimportantmanufacturingbaseandtechnicalknowledgetomoldthelevelofhighorlow,hasbecomethemanufacturingsectorofacountrysleveloftheimportantsignsandtoalargeextentdeterminethequalityofproducts,benefitsandnewproductdevelopmentcapability.Asagraduatemechanicaldesignspecificationwhichincludesdesignersthroughoutthedesignprocessandtodesignthefinaloutcome,butalsogaveabriefingonthemoldpartsprocessingmethodsandmoldassembly,Testmode.Designmanualstepspartclarity,thenewdesignconcept,haveacertainelementofinnovation,thedesignprocessmoreinformationandtheinformationtechnologystaffandsomedesignexperienceinthemanufactureanduseoflargeCADdrawingsoftwaredesignedtoimproveefficiency,acertainGuidanceandpractical.Keywords:Coldstampingdie,blangking,piercing,ProcessingTechnology,AssemblyProcess长沙学院毕业设计(论文)目录第1章绪论·······························································11.1冲压行业的近况··········································································11.1.1冲压技术的应用领域····································································11.1.2中国模具工业和技术的发展前景···················································11.1.3冲压模具的发展现状···································································21.1.4冲压设备的特点··········································································31.2冲压行业所面临的机遇和挑战························································31.2.1产品的发展················································································31.2.2模具行业发展新特点····································································41.3毕业设计的目的性和重要性···························································5第2章工件的分析与计算···············································62.1罩壳的工艺分析···········································································62.1.1零件图·······················································································62.1.2零件图的工艺分析·······································································62.2冲裁力、卸料力、顶出力的计算····································72.2.1冲裁力的计算·············································································72.2.2卸料力的计算·············································································82.2.3顶件力的计算·············································································92.2.4计算总冲裁力·············································································9第3章初选压力机·····················································113.1压力机的选取原则·····································································113.1选取压力机···············································································11第4章整体设计部分··················································124.1凸模的结构设计········································································124.1.1凸模选取的原则·········································································124.1.1.1精确定位··················································································124.1.1.2防止拔出··················································································124.1.1.3防止转动··················································································124.1.2凸模的结构···············································································124.1.3计算凸模长度············································································13长沙学院毕业设计(论文)4.1.4凸模强度校核············································································134.1.4.1凸模抗压能力校核·····································································134.1.4.2凸模纵向抗弯能力校核······························································134.2凹模的结构设计·········································································144.2.1凹模结构··················································································144.2.2计算凹模厚度············································································154.3刃口的尺寸计算·········································································154.3.1配作法制模刃口尺寸计算····························································154.3.1.1凸模刃口尺寸···········································································164.3.1.2凹模刃口尺寸············································································164.4压力中心的计算·········································································174.5定位装置的设计········································································174.5.1挡料销·····················································································174.5.2弹性定位销···············································································184.5.2.1弹簧的选取··············································································194.6卸料装置的设计·········································································194.6.1卸料板的选取············································································194.6.2弹性元件的选取及计算································································194.6.2.1弹性元件选取············································································194.6.2.2确定橡胶参数············································································204.6.3卸料螺钉的选取·········································································224.6.3.1卸料螺钉长L的确定··································································224.7顶料装置的设计·········································································234.7.1顶料装置的选取·········································································234.7.2圆柱弹簧参数的选取··································································234.8冲模的导向选用·········································································244.9其他零件的设计········································································254.10模架及其零件选用·····································································264.10.1模架·························································································264.10.2导向零件···················································································264.10.3模座·························································································274.10.4模柄的选择···············································································274.10.5固定板的选择············································································284.10.6垫板的选择················································································28