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Dynamic dent resistance measuring device of sheet metal

A technology of thin metal plates and measuring devices, which is applied in the direction of measuring devices, strength characteristics, and the use of stable tension/pressure to test the strength of materials, etc., can solve the problem of inaccurate measurement of dynamic anti-dent performance, and achieve the effect of constant speed

Pending Publication Date: 2019-08-30
BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a dynamic dent resistance measuring device for thin metal plates to solve the problem of inaccurate dynamic dent resistance measurement

Method used

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  • Dynamic dent resistance measuring device of sheet metal
  • Dynamic dent resistance measuring device of sheet metal
  • Dynamic dent resistance measuring device of sheet metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] The sample prepared with DX51D+Z cold-rolled steel plate was fixed on the test bench through the blank holder, and the distance between the moving beam and the sample was adjusted to 0.5m. The test parameters were adjusted by the equipment operating software, and the indenter speeds were set to 2m / s, 4m / s, 6m / s, 8m / s, and 10m / s, respectively. At the beginning of the test, the sensor records the pressure, acceleration, displacement, and contact time data during the test. Through data processing, the relationship between impact velocity and dent depth is obtained, such as image 3 shown.

Embodiment 2

[0068] The samples made of AA6016 aluminum alloy with three thicknesses of 1.0mm, 1.5mm and 2.0mm were fixed on the test bench, and the distance between the moving beam and the sample was adjusted to 0.5m. The test parameters were adjusted by the equipment operating software, and the indenter speed was set to 4 m / s. At the beginning of the test, the sensor records the pressure, acceleration, displacement, and contact time data during the test. Through data processing, the dynamic load energy-dent depth relationship curve is obtained, such as Figure 4 shown.

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Abstract

The invention provides a dynamic dent resistance measuring device of sheet metal, characterized by comprising a frame structure and a test structure, wherein the frame structure comprises two guide posts (3), a lower cross beam (5) and an upper cross beam (6), lower end faces of the two guide posts (3) are fixedly connected with the lower cross beam (5), upper end faces of the two guide posts (3)are fixedly connected with the upper cross beam (6), and rack guide rails are arranged on the inner sides of the two guide posts (3); the dynamic dent resistance measuring device of sheet metal provided by the invention has the advantages that a pressure head is driven by a servo motor to apply an acting force to the surface of a tested object, and then a constant and controllable initial speed can be obtained, thereby solving the problem that it is difficult to ensure a constant speed during the test by using a drop hammer or an air gun.

Description

technical field [0001] The invention belongs to a metal thin plate dynamic concave resistance measuring device, belongs to the technical field of metal testing, and particularly relates to a metal thin plate dynamic concave resistance measuring device. Background technique [0002] Cars are often subjected to external loads during daily use, such as minor collisions, gravel, hail and other dynamic impact loads, which require the cover to have a certain ability to resist dent deformation. In addition, in order to reduce the weight of the whole vehicle in the automobile design stage, the automobile industry generally uses light alloys or thinner high-strength steel plates to produce cover parts, which leads to the weakening of the dent resistance of the cover parts. [0003] The concave resistance of the cover is related to the properties of the sheet and the geometry of the part, such as sheet thickness, mechanical properties, part curvature, support, stamping process, etc. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
CPCG01N3/08G01N2203/0019
Inventor 丁蓓蓓张遥
Owner BEIJING HANGTIAN XINFENG MECHANICAL EQUIP
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