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Micro-hydromechanical deep drawing of metal cups with hydraulic pressure effects
Liang LUO, Zhengyi JIANG, Dongbin WEI, Xiaogang WANG, Cunlong ZHOU, Qingxue HUANG
《机械工程前沿（英文）》 2018年 第13卷 第1期 页码 66-73 doi: 10.1007/s11465-018-0468-z
Micro-metal products have recently enjoyed high demand. In addition, metal microforming has drawn increasing attention due to its net-forming capability, batch manufacturing potential, high product quality, and relatively low equipment cost. Micro-hydromechanical deep drawing (MHDD), a typical microforming method, has been developed to take advantage of hydraulic force. With reduced dimensions, the hydraulic pressure development changes; accordingly, the lubrication condition changes from the macroscale to the microscale. A Voronoi-based finite element model is proposed in this paper to consider the change in lubrication in MHDD according to open and closed lubricant pocket theory. Simulation results agree with experimental results concerning drawing force. Changes in friction significantly affect the drawing process and the drawn cups. Moreover, defined wrinkle indexes have been shown to have a complex relationship with hydraulic pressure. High hydraulic pressure can increase the maximum drawing ratio (drawn cup height), whereas the surface finish represented by the wear is not linearly dependent on the hydraulic pressure due to the wrinkles.
关键词： micro-hydromechanical deep drawing microforming size effects lubrication Voronoi
标题 作者 时间 类型 操作
Micro-hydromechanical deep drawing of metal cups with hydraulic pressure effects
Liang LUO, Zhengyi JIANG, Dongbin WEI, Xiaogang WANG, Cunlong ZHOU, Qingxue HUANG
期刊论文
Zhengyi Jiang：Current Development of Micro Composite Drills and Microforming of Mg-Li Alloy（2019年10月10
2021年04月23日
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