夹型滚动轴弯曲模具设计.docx

编号：时间：2021年x月x日书山有路勤为径学海无涯苦作舟页码：摘要本论文中设计的模具是单工序弯曲模。属于冲压工艺的一种但比起冲压模本套模具突出了弯曲模的特点而且包括冲压模文中考虑到工件批量大的特点选用了经过改进的一种高效率模具它是能一次成形的回转式压弯模。是组合式的活动凹模用于弯曲夹角小于90°的U形件可以一次弯曲成形。此模具具有一对有缺口的转轴凹模其缺口与工件外形相适应。凹模是转轴式的左右两件对称。这种形状的凹模制成组合式的且镶在凹模镶块中便于机械加工。另外镶块部分容易磨损这样利于更换又节省材料。再根据所选材料和厚度及性质经过计算分析完成该模具的毛坯、弯曲力、回弹值、凸、凹模间隙等的设计计算；选出适合该模具的定位方式、卸料出件方式；设计模具的工作部分即凸、凹模的设计选择模具的材料并确定每个零部件的加工方案；再根据模具的装配原则完成模具的装配。装配调整好的模具需要安装到机器上进行试模。如发现不符合要求的需加以修正并进行再次试模直到能正常运行并加工出合格的制品。关键词：弯曲工艺弯曲成形回转凹模AbstractThedesignofthemoldinthispaperisthebendingmodulusofasingleprocess.Belongtoastampingprocessbutcomparedtothestampingdiesetsofmoldshighlightsthecharacteristicsofthebendingdieandstampingmoldinthispaperweconsidertheworkpiecevolumethechoiceofahigh-efficiencyimprovedmolditiscanformingarotarybendingmode.ThecombinedactivitiesofthediefortheU-shapedbendanglelessthan90°timebendingandforming.Thismoldhasapairofshaftthediegaptoadaptitsgapwiththeworkpieceshape.Thedieistheshaftabouttwosymmetric.Theshapeoftheconcavemoldmademodularandinsertinthedieinserteaseofmachining.Inadditiontheinsertpartiseasytowearsoconducivetochangeandsavematerial．ThedeclineofthepunchwiththepressthesliderthefirstblankwithinthediebentintoaU-shapedpieceof90°pressuretoturnthediewhenthepunchcontinuedtodeclinethebottomoftheblankrotatingthedieforcerotationtheblanksandfurtherbendingandforming.Driverotatingthediewhenthereboundofthepunchwiththepressthesliderthereverserotationlimitnailandtheaxisofthespringsothattherotationofthediereset.Bendingthedieduetothisstructurecanbecompletedinthepressatourofseveralpairsofsimplemoldtocompletethebendingprocessthemoldstructureisnotcomplicatedsomoreinproduction.Thencalculatedaccordingtotheselectedmaterialandthethicknes