Large complex three-dimensional bending structural part drawing and bending forming device

Abstract

The invention relates to a multi-point and multi-unit controlled large curvature three-dimensional drawing and bending forming device, and belongs to the technical field of metal profile drawing and bending forming. The forming device is mainly composed of base control units, multi-point forming dies, a worktable, a first hydraulic oil cylinder, a limiting element (a pin shaft, a bolt group, a second hydraulic cylinder, a positioning screw) and the other parts. The problem that a skeleton structure of a vehicle body cannot guarantee the consistence of the overall performance of the skeleton structure due to multi-stage forming is solved, a discrete adjustable shape segmented die base structure is designed, a die assembly deformation space in the profile three-dimensional bending process isexpanded, and the curvature radius of bending forming is increased; and the envelope surface shape formed by the multi-point dies on each base unit is adjusted shapes, and the manufacture of a largeintegral three-dimensional bending structural part, such as a three-dimensional bending U-shaped part, is realized. The multi-point and multi-unit controlled large curvature three-dimensional drawingand bending forming device can be widely used in the production of rail vehicle members, aerospace members and various complex and large deformation structural parts in various metal manufacturing industries.

Description

technical field [0001] The invention relates to mechanical design, mold structure, and actuator design, belongs to the technical field of metal profile stretch bending, and can be widely used in rail vehicle components, aerospace components, and various complex and large-deformed structural parts in various metal manufacturing industries. Production. Background technique [0002] Light metal materials such as aluminum, magnesium, and titanium, due to their high specific strength and specific stiffness, have shown more and more application prospects in the manufacturing fields of automobiles, rail transit, and aerospace, especially in complex large-scale tension-bending skeleton components . The research and development of advanced forming technology for light alloy materials is of great significance to realize high-quality, low-cost, and short-cycle manufacturing of complex components, and to alleviate the energy and environmental pressure brought by transportation, as well...

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is to provide a stretch bending forming device for large complex three-dimensional curved structural parts by using multi-point and multi-unit control, which discretely divides the overall workbench into an adjustable segmented base structure, breaking through the traditional three-dimensional stretch bending The limitation of the bending forming radius of the multi-point mold can realize the one-time forming of large and complex three-dimensional stretch-bending components, such as three-dimensional bending U-shaped parts, which improves the structural strength and working stability of the components

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