A detection method and detection system for forming defects of multi-groove sheet metal

A detection method and groove-type technology, applied in the directions of optical testing flaws/defects, measuring devices, analyzing materials, etc., can solve the problem of inability to quantitatively know the thickness of the plate, achieve automatic detection, improve reliability, and improve measurement efficiency. Effect

Active Publication Date: 2020-11-24
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

Through this method, the automatic and rapid detection of multi-groove panel defects is realized, which has the advantages of high efficiency and strong reliability of detection results, thereby solving the technical problem that the thickness of the plate cannot be quantitatively obtained

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  • A detection method and detection system for forming defects of multi-groove sheet metal

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0037] The detection system includes a logic motion control module, a data acquisition module, a data processing module, and a real-time display module, among which:

[0038] The logic motion control module controls the start and end positions of the scanning measurement of the laser displacement sensor to be on the outside of the plate to be measured, so that the operation of the sensor scan...

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Abstract

The invention belongs to the field of metal plastic deformation technologies and detection, and discloses a detecting method of a deformation defect of a multi-groove panel. The method comprises the following steps: (a) dividing a panel to be detected into a plurality of cross sections; treating each cross section as a surface to be detected; and scanning the upper surface and the lower surface ofeach surface to be detected so as to obtain coordinates of each scanning point on each of the upper side and the lower side of all surfaces to be detected; and (b) calculating the normal thickness ofeach scanning point on the surface to be detected based on the coordinates of each scanning point on each of the upper side and the lower side of each surface to be detected; comparing the normal thickness of each scanning point and the standard thickness of the panel to be detected; and determining that the panel of which the normal thickness is less than a preset deviation range as a qualifiedpanel, and otherwise determining that the panel is defected. The invention also discloses a detecting system of the method. With the adoption of the detecting method and system, the panel defect can be automatically rapidly detected; the detecting efficiency is high; and the detecting result is high in reliability.

Description

technical field [0001] The invention belongs to the field of metal plastic forming technology and detection, and more specifically relates to a detection method and detection system for forming defects of a multi-groove type plate. Background technique [0002] As a heat transfer device with compact structure and high performance, plate heat exchanger is often used in the heat transfer process between two fluids with thermal contact between different temperatures. The structure is mainly composed of a group of metal plates with a certain corrugated shape and four corner holes. Among them, the corrugated plate is used as the core component, and two liquids with different temperatures and pressures flow between the plates. Its working characteristics and fatigue life will be directly determined by the forming quality of the plate. During the manufacture of plate heat exchangers, there are strict requirements on the forming quality of each plate, such as surface quality and pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/01G01N21/95G01B11/06
CPCG01B11/0608G01N21/01G01N21/95
Inventor 陈柏金伍乘星
Owner HUAZHONG UNIV OF SCI & TECH
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