QT8812汽车发动机油底壳二次拉深成形回弹分析  

Springback analysis of QT8812 car engine oil pan by twice deep drawing

作　　者：覃天[1,2] 吴泊良[3] 苏广才[4] 胡建华 

机构地区：[1]桂林理工大学广西矿冶与环境科学实验中心,广西桂林541004 [2]桂林理工大学机械与控制工程学院,广西桂林541004 [3]南宁职业技术学院机电工程学院,广西南宁530008 [4]广西大学材料科学与工程学院,广西南宁530004 [5]柳州五顺汽车配件厂,广西柳州545005

出　　处：《锻压技术》2013年第6期178-185,共8页Forging & Stamping Technology

摘　　要：利用有限元模拟分析软件ETA/Dynaform对QT8812汽车发动机油底壳进行了二次拉深成形的回弹模拟分析,分别选取油底壳零件切边前后的腰部圆弧部分、深盒部分的截面图进行回弹量变化的分析,选取这些部位截面上有代表性的特征位置进行相关数据的采集和比较。结果表明,零件切边前后的回弹量与零件的贴模特性密切相关,拉深阶段贴膜程度越高,塑性变形越充分,零件的回弹量就越小,贴膜程度越低,回弹量就越大。油底壳零件在二次拉深成形切边后的回弹量很低,回弹量的绝对尺寸没有超过允许值2mm。The springback of twice drawing was simulated for QT8812 engine oil-pan by ETA/Dynaform. The circle part of the lumbar and the deep box before and after trimming were analyzed, and the data collected from the typical characteristic location of the above were contrasted. The results show that the springback is associated of the character- istic of attach-die, when the attach-die during the stage of drawing is wore, the plastic deformation is more sufficient and the springback is lower, on the contrary, the springback is larger. The result shows that after twice drawing molding and trimming, the springback is very low, and the absolute size is less than permissible value 2 mm.

关 键 词：发动机油底壳零件 回弹模拟 拉深成形 

分 类 号：TG38[金属学及工艺—金属压力加工] U464[机械工程—车辆工程]