Ultrasonic-assisted flexible rolling forming method and device for micro-groove surface structure

Abstract

The invention belongs to the field of metal plastic forming, and discloses an ultrasonic-assisted flexible rolling forming method and device for a micro-groove surface structure. The device comprisesclamping sub-devices (1), an impression roller (3), a support roller (6) and an ultrasonic vibration system (4). The impression roller (3) and the support roller (6) can synchronously roll on the surface of a metal piece to be treated along a preset track, under the assistance of ultrasonic vibration, the impression roller and the support roller are cooperatively used to carry out extrusion effecton the metal piece to be treated, and then a micro groove is formed in the surface of the metal piece to be treated, wherein the ultrasonic vibration can soften the metal piece to be treated, and theauxiliary effect is achieved. According to the ultrasonic-assisted flexible rolling forming method, through improvement of the arrangement of the components in the device and the working relationshipof mutual cooperation between the components and the like, rolling extrusion on the surface of the metal plate piece is carried out through the cooperation of the impression roller and the support roller, so that the material on the surface of the metal plate piece is subjected to continuous elastic plastic deformation, and meanwhile, the deformation resistance of the material is reduced by utilizing the ultrasonic softening effect.

Description

technical field [0001] The invention belongs to the field of metal plastic forming, and more specifically relates to a method and device for ultrasonically assisted flexible rolling forming of micro-grooved surface structures. The method and device are especially suitable for large-sized curved metal sheet surfaces such as aircraft skin A micro-groove structure with a drag-reducing function is formed. Background technique [0002] As a major strategic equipment for safeguarding national security, safeguarding national interests and promoting national economic development, large aircraft has become the focus of the development of high-end equipment manufacturing industries in world powers. Drag reduction is one of the key scientific and technological issues faced by the development of large aircraft. The wall frictional resistance encountered by large aircraft during cruising accounts for about 40% to 50% of the total resistance. If the frictional resistance is reduced by 10...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the purpose of the present invention is to provide an ultrasonic-assisted flexible rolling forming method and device for micro-grooved surface structures, wherein through the setting of each component in the device and the mutual cooperation between them Compared with the existing technology, it can effectively solve the difficult problems of large-area processing of micro-grooves on the surface of curved or irregular metal plates.

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