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摘要：
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采用薄壁圆筒缩径成形工艺生产汽车产品是一种新技术。与传统的旋压成形比较 ,可大大降低设备的投资 ,提高生产效率和产品质量 ,降低制造成本。薄壁圆筒缩径成形与薄壁管缩径比较 ,缩径时存在着口部起皱、顶盖弯曲失稳的缺陷。为了得到高质量的产品 ,缩径工艺方案设计要考虑材料性质、摩擦系数、缩径变形量、半模角等诸多因素。本文以轿车后弹簧座缩径成形为例 ,研究了上述参数对缩径工艺方案设计的影响。并采用有限元数值模拟方法进行工艺参数的优化设计 ,得到了应用于实际的工艺方案
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The sinking process with thin walled cylindrical is a new technology, which will be used to produce complicated automobile parts Compared with traditional method of whirling process, it can consumedly decrease investment for equipments and increase manufacturing efficiency and buckling at the top These defects are affected by the forming parameters such as material properties, the friction coefficient μ , the die semi cone angle α , the reduction ratio R f /R 0 Regarding back spring seat of car as example, this paper has analyzed the influence of aforementioned parameters on designing of the sinking process And optimizing the process design by using the FEM , a more practical process scheme is gained through FEM, which could shorten the process developed cycle, raise the productive efficiency and decrease the production cost
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基金项目：
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作者简介：
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参考文献：
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1 FritzKlockeExamplesofFEMapplicationinmanufacturingtechnologyJournalofMaterialsprocessingTechnology,2002,200:450～457
2 Jong yopkimOptimumblankdesignofanautomobilesubframeJournalofMaterialsprocessingTechnology,2000,101:31～34
3 滕宏春,张凤兰传动轴管精密缩径上限解析北京:农业机械学报,2000,99:3
4 徐秉业塑性力学北京:高等教育出版社,1988
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