Three-dimensional single-side variable-cross-section roll-bending forming machine

Abstract

The invention provides a three-dimensional single-side variable-cross-section roll-bending forming machine which comprises a rack, a forming roll part, an auxiliary roll part, a rotary part and a driving mechanism, wherein the rack comprises a fixed rack and a movable rack movably connected with the fixed rack; the rotary part is driven by the driving mechanism and is connected with the movable rack; the forming roll part is connected with the rotary part and is driven by the driving mechanism; and the auxiliary roll part is arranged on the fixed rack opposite to the rotary part. According tothe invention, the technical problem that the plate can not be deformed along the longitudinal direction is effectively solved, and the requirement for practical production can be better met. Simultaneously, a single-shaft variable-cross-section roll-bending forming technology is utilized in the invention, a cold-bending technology and a servo control technology are combined together, and the continuous change of the shape of the cross section can be realized in the longitudinal direction of the profile according to the design requirement, so that the cold-bending forming profile has more reasonable mechanical property.

Description

technical field [0001] The invention relates to a roll forming machine, in particular to a three-dimensional single-side variable section roll forming machine. Background technique [0002] Existing roll bending machines are generally equal-section forming or two-dimensional single-sided variable-section roll forming. Constant-section roll forming machines cannot form variable-section products, and the demand for variable-section products in actual production practice is Increasingly, the formable range of equal-section roll forming machines is very limited. The two-dimensional single-side variable-section roll forming machine mostly realizes the single-side variable-section forming of the plate through the combination of the advance of the plate and the movement of the roll along the transverse direction of the plate. Due to the lack of swing along the forming contour when the roll pulls the sheet laterally, the metal flow in the sheet is more disordered, resulting in a la...

AI Technical Summary

Problems solved by technology

Due to the lack of swing along the forming contour when the roll pulls the sheet laterally, the metal flow in the sheet is more disordered, resulting in a large forming force of the sheet and easily causing severe deformation of the sheet, reducing the mechanical properties of the formed part

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