Ultrasonic-assisted flexible rolling forming method and device for micro-grooved 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, wherein the device includes a clamping sub-device (1), an embossing roller (3), a backup roller (6) and The ultrasonic vibration system (4), the embossing roller (3) and the supporting roller (6) can roll synchronously on the surface of the metal piece to be processed along the preset track, and with the assistance of ultrasonic vibration, cooperate with the metal piece to be processed Extrusion is generated and then rolled to form micro grooves on the surface of the metal piece to be treated; among them, ultrasonic vibration can soften the metal piece to be treated and play an auxiliary role. The present invention improves the setting of each component in the device and the working relationship between them, and utilizes the rolling extrusion of the embossing roller and the support roller on the surface of the metal plate to make the material on the surface of the metal plate Continuous elastic-plastic deformation occurs, and the ultrasonic softening effect is used to reduce the deformation resistance of the material.

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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