Device and method for electromagnetic pulse partial flow progressive forming of metal sheet

An electromagnetic pulse and progressive forming technology, which is applied in the field of plastic forming of materials, can solve problems such as weakening tensile stress, and achieve the effects of improving plastic fluidity, reducing coil size and equipment energy requirements, and high-precision manufacturing

CN104475531BInactive Publication Date: 2016-04-13HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-04-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a metal plate electromagnetic pulse local flow incremental forming device which comprises a base, a mould forming mechanism, a pressing plate and an electromagnetic forming coil, wherein the mould forming mechanism is arranged on the base, the pressing plate is matched with the mould forming mechanism and used for pressing a plate, and the electromagnetic forming coil is driven to move by a power device. A radial side push coil for applying thrust to the outside edge of the plate is mounted on the pressing plate and / or the mould forming mechanism, and a power system supplies power for the electromagnetic forming coil and the radial side push coil. The local area of the plate has small deformation by the aid of the electromagnetic forming coil and the radial side push coil in each discharging process, so that the requirement for the sizes of the coils and equipment energy is reduced, and the device solves the problem that traditional large plate forming needs a high-cost forming device.
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Description

Technical field

[0001] The invention belongs to the technical field of material plastic forming, and more specifically, relates to a device and method for forming a metal sheet with electromagnetic pulse local flow progressively. Background technique

[0002] In order to effectively reduce energy consumption and environmental pollution, lightweight structures and materials have become the mainstream trend of modern technology development. According to the survey, about 60% of automobile fuel is consumed by the weight of the automobile, and every 10% reduction in automobile mass can reduce fuel consumption by 6% to 8%. High-performance aluminum alloy is an effective means and technical way to realize the lightweight of automobiles. However, in traditional stamping forming, aluminum alloy has poor deformation performance, which is mainly manifested in two aspects: 1) The metal flows unevenly during stamping forming, which is prone to wrinkles and cracks. This causes the forming l...

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Embodiment Construction

[0047] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] An electromagnetic pulse local flow progressive forming device for sheet metal, comprising a base 1, a mold forming mechanism arranged on the base 1, a pressure plate 4 for cooperating with the mold forming mechanism to press the sheet 6 and a power device that can move up and down, left and right The electromagnetic forming coil 7 is installed on the pressure plate 4 and / or the mold forming mec...