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超声激励下的机器人化渐进式金属板材成型工艺研究。

Investigation of the Robotized Incremental Metal-Sheet Forming Process with Ultrasonic Excitation.

作者信息

Ostasevicius Vytautas, Paulauskaite-Taraseviciene Agne, Paleviciute Ieva, Jurenas Vytautas, Griskevicius Paulius, Eidukynas Darius, Kizauskiene Laura

机构信息

Institute of Mechatronics, Kaunas University of Technology, Studentu Street 56, LT-51424 Kaunas, Lithuania.

Department of Applied Informatics, Kaunas University of Technology, Studentu Street 50, LT-51368 Kaunas, Lithuania.

出版信息

Materials (Basel). 2022 Jan 28;15(3):1024. doi: 10.3390/ma15031024.

DOI:10.3390/ma15031024
PMID:35160970
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8838328/
Abstract

During the single-point incremental forming (SPIF) process, a sheet is formed by a locally acting stress field on the surface consisting of a normal and shear component that is strongly affected by friction of the dragging forming tool. SPIF is usually performed under well-lubricated conditions in order to reduce friction. Instead of lubricating the contact surface of the sheet metal, we propose an innovative, environmentally friendly method to reduce the coefficient of friction by ultrasonic excitation of the metal sheet. By evaluating the tool-workpiece interaction process as non-linear due to large deformations in the metal sheet, the finite element method (FEM) allows for a virtual evaluation of the deformation and piercing parameters of the SPIF process in order to determine destructive loads.

摘要

在单点渐进成形（SPIF）过程中，板材是通过作用于其表面的局部应力场形成的，该应力场由法向分量和剪切分量组成，且会受到拖动成形工具摩擦力的强烈影响。SPIF通常在充分润滑的条件下进行，以减少摩擦。我们提出了一种创新的、环保的方法，即通过对金属板材进行超声激励来降低摩擦系数，而不是对金属板材的接触面进行润滑。由于金属板材中存在大变形，有限元法（FEM）将工具 - 工件相互作用过程评估为非线性过程，从而可以对SPIF过程的变形和冲孔参数进行虚拟评估，以确定破坏载荷。

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