Aluminum alloy thin-walled frame plate bending forming device

Abstract

The invention discloses a thin-walled aluminum alloy frame plate bending device which comprises a lathe bed. A sliding groove is fixedly formed in the lathe bed, a first middle slider and a second middle slider are arranged in the sliding groove, a first moving middle roller shaft and a second moving middle roller shaft are mounted in central holes of the first middle slider and the second middle slider respectively, a rack is arranged on each side of the first middle slider, a deflection arm is arranged on each side of the sliding groove, side sliders are arranged in square grooves of the deflection arms, movable side roller shafts are mounted in central holes of the side sliders, fixed side roller shafts are mounted in central holes of deflection arm ends, gears are arranged on the outer walls of the deflection arm ends and matched with the racks on the same side of the gears in operation, one end of the second middle slider and one end of each side slider are respectively connected with a clamping cylinder, one end of the first middle slider is connected with a main cylinder, each roller shaft is connected with a driving hydraulic motor, and the driving hydraulic motors, the main cylinder and the clamping cylinders are connected with a control system.

Description

technical field [0001] The invention relates to metal material processing equipment, in particular to a bending forming device for an aluminum alloy thin-walled frame plate. Background technique [0002] Aluminum alloy thin-walled frame plate is widely used in the riveted cabin section of the carrier model. It is connected with girders, purlins, skins and other parts in the cabin section by riveting, and is used to build the force transmission skeleton of the cabin section, transfer loads and provide Therefore, the forming quality of the frame plate directly affects the assembly reliability of the riveted cabin section. [0003] In the prior art, similar thin-walled frame panels are generally formed by stretch bending or roll bending. Stretch bending can obtain high forming accuracy, but this forming method has its limitations. When the thickness of the frame plate wall is thin, the cavity is deep, and the bending radius is small, the use of stretch bending will cause the s...

AI Technical Summary

Problems solved by technology

Stretch bending can obtain high forming accuracy, but this forming method has its limitations. When the thickness of the frame plate wall is thin, the cavity is deep, and the bending radius is small, the use of stretch bending will cause the shape of the part to be deformed. Instability, but the rolling bending forming is not limited by it, so the processing range is wider

[0004] Most of the existing roll-bending devices are in the form of four or five axes, which are not suitable for bending and forming parts such as thin-walled frame plates. A small number of frame plate bending devices with six rollers have relatively simple functions and work Only the two rollers in the middle are active rollers, and the two pairs of rollers on both sides (total four) are passive rollers. During the rolling and bending process, they only rely on friction to drive, which is prone to slipping, and the two pairs of rollers on both sides are During the forming process of the part, it will not swing with the change of the radius of curvature of the part, and it cannot be guaranteed that the roller shaft is always at the tangent point to the part during the entire forming process. Therefore, the forming accuracy of the part is not high, the forming quality is poor, and the forming The breakage rate is high during the process, and at the same time, the center roller shaft in the clamped state cannot adjust the radius of curvature during the bending process, so the production efficiency is not high

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