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

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.

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...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of high equipment cost, severe material thinning, easy cracking and low forming depth in the traditional large metal sheet forming process, the present invention provides a metal sheet electromagnetic pulse local flow progressive forming device and method, which can effectively improve the large metal sheet. The forming depth improves the plastic fluidity of the material and weakens the tensile stress on the plate area corresponding to the electromagnetic forming coil during deformation, thereby overcoming the problem of excessive thinning of the plate caused by excessive tensile stress in traditional stamping forming. defect

Images