摘要
在单点增量成形过程中,板料背面悬空不受任何支撑,仅依靠工具头和板料之间的挤压作用对板料进行无约束成形,易造成板料成形精度不高。本文提出了一种等静压支撑单点增量成形新技术,在成形过程中为板料提供有效支撑。以1060铝板为研究对象,分析等静压参数对成形力的影响规律。结果表明:静压支撑单点增量成形,水平方向的力Fx和Fy较传统的单点增量成形有一定的增加,但增加幅度不大,轴向力Fz变化比较大,随着静压的不断增加,轴向力不断增大。设计开发静压系统,通过实验验证,获得静压条件下成形力的变化规律,并验证了仿真的正确性。
In the single-point incremental forming process, the back side of the sheet metal is not supported by any support, and the sheet metal is unconstrained between the tool head and the sheet metal, which is easy to cause the sheet forming precision to decrease. A new technique for isostatic pressing support in single point incremental forming is proposed, which provides the effective support for the sheet metal in the forming process. The influence law of the isostatic pressure parameters on the forming force of 1060 aluminum plate was analyzed. The results show that the single-point incremental forming of static pressure support has a certain increase in the force of F x and F y in the horizontal direction being compared with the traditional single-point incremental forming, but the increase is not large, and the axial force F z changes greatly. As the static pressure increases, the axial force increases. The static pressure system was designed and developed, and the variation of the experimental forming force under static pressure was obtained, and the correctness of the simulation was verified.
作者
姚志远
杨明顺
李言
袁启龙
郑海洋
姚梓萌
Yao Zhiyuan;Yang Mingshun;Li Yan;Yuan Qilong;Zheng Haiyang;Yao Zimeng(School of Mechanical and Precision Instrument Engineering, Xi′an University of Technology, Xi′an 710048, China)
出处
《机械科学与技术》
CSCD
北大核心
2019年第6期902-908,共7页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(51475366、51475146)
陕西省自然科学基础研究计划项目(2016JM5074)资助
关键词
单点渐进成形
静压
有限元仿真
实验验证
single point incremental forming
static pressure
finite element simulation
experimental verification
