Unfolding and straightening equipment for arc section of thin-walled cylindrical part with outer transverse rib

Abstract

The invention belongs to the technical field of composite forming of metal profiles, and particularly relates to unfolding and straightening equipment for an arc section of a thin-walled cylindrical part with an outer transverse rib. A straightening roll system comprises 12 straightening rolls. A pinch roll system is formed by two straightening rolls and two sets of pinch roll adjusting devices. Each set of pinch roll adjusting device is composed of a screw, a nut, two semi-ring hoops, a rectangular sliding block, a force bearing frame, an air cylinder and a pinch roll frame. A pre-unfolding roll system is formed by three straightening rolls. A biting angle adjusting roll system is formed by three straightening rolls; and seven straightening rolls form a seven-roll straightening roll system. According to the invention, on the basis of absorbing the advantages of traditional multi-roll straightening equipment, a traditional straightening device is improved and innovated to make the straightening device meet the requirements for unfolding and straightening the arc section of the thin-walled cylindrical part with the outer transverse rib; multiple functions of clamping and feeding, pre-unfolding, biting angle adjusting, continuous unfolding and straightening and the like of arc section blanks can be achieved; and the occupied area is small, investment is small, and efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of compound forming of metal profiles, and in particular relates to a device for unfolding and straightening arc sections of thin-walled cylindrical parts with outer transverse ribs. Background technique [0002] In modern high-end manufacturing fields such as automobiles, ships, rail transit, and aerospace, high-strength, high-toughness thin-walled aluminum alloy sheets are widely used. In order to meet the performance requirements of high strength, good rigidity, and light weight of components, high-strength, high-toughness thin-walled aluminum alloy plates usually need to be fixed with reinforcing ribs. At present, there are mainly two methods of fixing high-strength and high-toughness thin-walled aluminum alloy plates and ribs, welding and riveting, which inevitably bring about problems such as heavy welding or riveting workload, overall weight gain, and low assembly efficiency. The overall forming tech...

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Problems solved by technology

[0013] The purpose of the present invention is to make use of the advantages of the prior art that it is easier to produce large-diameter, high-precision thin-walled cylindrical parts with outer transverse ribs, and utilize the advantages of the arc section of a thin-walled cylindrical part with outer transverse ribs proposed by the present invention. Unfolding and straightening equipment, combined with an integral forming method of a wide-width high-rib thin-walled metal wall plate and a method for unfolding and straightening the arc section of a thin-walled cylindrical part with outer transverse ribs, can overcome the existing There are many difficulties in the overall forming of wide-width, high-rib and thin-walled metal panels with existing technologies, and solve the production problems of "wide-width, high-rib and thin-walled metal panels" in integral forming

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