Novel device capable of being used for thin strip tension bending experiment

Abstract

The invention discloses a novel device capable of being used for a thin strip tension bending experiment, and belongs to the technical field of metal thin plate shape straightening. The novel device comprises tension mechanisms, clamping mechanisms and a bending mechanism. Each tension mechanism comprises a tension linear servo motor part and a tension sensor. Each clamping mechanism comprises a clamping rack, a clamp, a hydraulic mechanism, a sliding block and a guide rail. A bending linear servo motor part and the bending mechanism comprise a bending rack, a bending force sensor, a forward and reverse bending pressure head, a simply supported beam bending module and a three-point bending module. The device has the advantages that: 1, a thin strip, particularly an ultra-thin strip, can besubjected to no-damage pressure-stabilizing clamping; tension control is more intelligent, multiple bending roller sets are arranged, multiple forms of tension bending are achieved, and experimentalconditions are provided for research in the tension bending field; and 3, an alternate bending experiment of a material is carried out to test the Bauschinger effect of the material, and the device has great significance for researching the stretch bending and straightening process of the ultra-thin strip.

Description

technical field [0001] The invention relates to the technical field of metal sheet straightening, in particular to a novel device that can be used in thin strip tension bending experiments. Background technique [0002] In the continuous stretch-bending straightening process, the deformation of each bending unit is more complicated due to the existence of tension. The predecessors calculated the theoretical maximum curvature based on the diameter of the straightening roller, and believed that when large plastic deformation occurs, the theoretical maximum curvature is the maximum curvature of the entire bending unit, resulting in a large error between theory and practice. Especially for very thin strips, tension greatly affects their deformation behavior during bending. In order to study the relationship among tension, bending concentration and mid-span deflection of thin strips, including very thin strips during tension bending, an experimental device capable of tension ben...

AI Technical Summary

Problems solved by technology

[0004] Clamping problem: The traditional wedge clamp cannot adapt to the working environment of repeated operation. At the same time, the extremely thin strip has slipping and surface damage or even tearing due to insufficient clamping force. Therefore, it needs to be more stable and clamping force is greater. And the clamping method without damage to the surface of the material;

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