Multi-directional Loading Rotary Extrusion Forming Technology and Equipment

doi:10.3901/JME.2023.12.264

Abstract

Abstract: Large thin-walled and high-ribbed components are typical structural components to achieve extreme light weight of products, and there are many challenges in their overall forming. In view of the demand for accurate plastic forming of high-performance large thin-walled lightweight components with inner ring high ribs, the new technology of multi-directional loading rotary extrusion forming technology is proposed for the first time, which can match linear motion of punches with rotational motion of dies and can actively increase the strong shear deformation of metal material. And a 12.5 MN-0.4 MN·m-10 r/min multi-directional loading rotary extruder with independent intellectual property rights is developed. By actively controlling the multi-stage combination of axial, radial and rotational movements of the mold, the equipment uses the micro-zone cumulative strain method to subvert the tradition that the shape of the blank and the workpiece determine the degree of deformation. This technology can control the orderly and reasonable flow of metal, realize the uniform toughness of material and the overall accurate forming of transverse high-ribbed members (0-70 mm in rib height) within thin walls, thus improving the mechanical properties and material utilization of products. This technology and equipment fills the gap of integrated and controlled forming of large thin-walled internal transverse high rib type lightweight components at home and abroad, and expands the new field of plastic forming.

Key words: multi-directional loading, rotary extrusion, inner ring ribs, shear deformation, integral forming

CLC Number:

TG379

ZHANG Zhimin, LI Guojun, WANG Qiang, YU Jianmin, XUE Yong, CHEN Zhe. Multi-directional Loading Rotary Extrusion Forming Technology and Equipment[J]. Journal of Mechanical Engineering, 2023, 59(12): 264-271.

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