Three-roller bending test apparatus with capability of detecting weld of sheet material

Abstract

The invention discloses a three-roller bending test apparatus with capability of detecting a weld of a sheet material. The apparatus comprises a workbench, which is equipped with an electric machine. An output shaft of the electric machine is in fixed connection with a first bevel gear. The first bevel gear is engage with a second bevel gear and a third bevel gear, respectively, and is installed on a first bevel gear mounting base through a first bearing. The top end of the first bevel gear mounting base is equipped with a second bevel gear through a second bearing. A second bevel gear mounting base is installed on the first bevel gear mounting base and supports the third bevel gear through a third bearing. In the apparatus, the electric machine drives the first bevel gear to rotate, so that the second and third bevel gears are driven to rotate, and then first and second active rollers are driven to move. Through cooperation of a fixed roller with the first and second active rollers, the sheet material is bent. Through an angle sensor arranged on the top part of the first bevel gear, the bending angle of the sheet material can be accurately controlled.

Description

technical field [0001] The invention relates to a three-roller bending test device for detecting the weld seam performance of plates, and belongs to the technical field of measurement test devices. Background technique [0002] In the prior art, it is necessary to bend plates of the same material with different thickness specifications and spliced ​​by welds to test the performance of the welds. Generally speaking, the finished plate bender is used for bending the plates. These bending machines often have the following problems: when bending the welded steel plate, the weld seam may bulge, and the given bending angle cannot be accurately controlled, which will lead to inaccurate test data and cannot effectively detect the performance of the weld seam. General-purpose bending machines often cannot complete the test requirements. [0003] Chinese patent CN201832882 discloses a bending device, the principle of which is: a central axis is set in the center of the workbench, two...

AI Technical Summary

Problems solved by technology

These bending machines often have the following problems: when bending the welded steel plate, the weld seam may bulge, and the given bending angle cannot be accurately controlled, which will lead to inaccurate test data and cannot effectively detect the performance of the weld seam. General-purpose bending machines often cannot complete the test requirements

This kind of bending device depends on the working groove to ensure the bending track, and it is difficult to realize the simultaneous synchronous movement of the two drive shafts with different driving sources. In addition, from the principle point of view, the fixing of the sheet material is unstable, and it is not easy to guarantee during the bending process. position of sheet

It is difficult to effectively detect the performance of the weld, and it is difficult to meet the experimental requirements for accurate results

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