基于Deform的汽车发动机曲轴模锻数值模拟及模具优化
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摘要
针对汽车发动机曲轴模锻过程中出现填充不满的缺陷,本文以模具的飞边槽结构作为优化对象,对比了普通的敞口型飞边槽和增设阻力墙的改进型飞边槽在模锻过程中的填充。结果表明,飞边槽结构中增设的阻力墙能很好地挤压金属流向难填充部位,提高了锻件的充填率。
Aiming at the defects of filling dissatisfaction in the die forging process of crankshaft of automobile engine,taking the flash groove structure of the die as the optimization object, the filling of the ordinary open flash groove and the modified flash groove with resistance wall in the die forging process were compared. The results show that the additional resistance wall in the flash groove structure can well squeeze the metal flow to difficult filling position and improve the filling rate of the forgings.
Aiming at the defects of filling dissatisfaction in the die forging process of crankshaft of automobile engine,taking the flash groove structure of the die as the optimization object, the filling of the ordinary open flash groove and the modified flash groove with resistance wall in the die forging process were compared. The results show that the additional resistance wall in the flash groove structure can well squeeze the metal flow to difficult filling position and improve the filling rate of the forgings.
引文
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[5]管婧,王广春,赵国群.飞边槽结构形式对模锻成形的影响[J].热加工工艺,2002,31(5):40-41.
[2]左阳春,王超,杨晶,等.几种凸轮轴锻造工艺比较[J].热加工工艺,2013,42(11):237-239.
[3]施爱莉.国产化非调制钢49Mn VS3在桑塔纳轿车曲轴上的应用[J].汽车技术,1995(1):36-39.
[4]范海清.大型曲轴RR法弯曲镦锻的弹塑性有限元模拟与成形规律研究[D].天津大学,2003:45-49.
[5]管婧,王广春,赵国群.飞边槽结构形式对模锻成形的影响[J].热加工工艺,2002,31(5):40-41.