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Welding height control method and device for fully automatic tube-sheet welding

A technology of tube-sheet welding and height control, which is applied in welding equipment, manufacturing tools, arc welding equipment, etc., can solve problems such as high welding quality, thermal deformation of tube-sheet, and tungsten electrode wear, so as to achieve high welding quality and avoid undercutting and breakage, the effect of compensating for changes in welding height

Active Publication Date: 2020-08-18
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

The invention can compensate the change of the welding height of the tube plate during the welding process, so as to achieve the purpose of controlling the welding quality, effectively solve the problems of the tube plate thermal deformation, tungsten electrode wear, etc., and the welding quality is high

Method used

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  • Welding height control method and device for fully automatic tube-sheet welding
  • Welding height control method and device for fully automatic tube-sheet welding
  • Welding height control method and device for fully automatic tube-sheet welding

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Embodiment Construction

[0051] In order to make the object, technical solution and advantages of the present invention clearer, 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.

[0052] like figure 1 , figure 2 As shown, the pre-welding-real-time welding height control method of a kind of fully automatic tube-sheet welding of the present invention adopts the following welding device to realize:

[0053] The welding device at least includes: a laser vision component 1, a laser sensor 2, a welding component 3, an arc voltage real-time tracking component and an industria...

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Abstract

The invention belongs to the field of tube plate welding, and specifically discloses a welding height control method and device for fully automatic welding of a tube plate. The method comprises the following steps: establishing a linear relationship between an intersection point coordinate of the cross-laser of the tube plate and the welding height of the tube plate; realizing pre-weld compensation of the welding height of the tube to be welded according to the linear relationship, and the intersection point coordinate of the cross-laser of a standard tube and the tube to be welded; and acquiring an average voltage value of N consecutive real-time peak voltage values within a preset period when the tube to be welded is welded according to calibration voltage and threshold range during thewelding of the standard tube in the primary welding height, and adjusting the distance between a welding gun and the tube plate in real time according to the relationship between the real-time voltageand the threshold range. The device comprises a base, and a laser vision component, a welding component, a laser sensor, an arc voltage real-time tracking component, and an industrial control computer which are integrated on the base. The welding height control method and device can effectively solve the problems of tube plate thermal deformation, tungsten electrode wear and the like, and have high welding quality.

Description

technical field [0001] The invention belongs to the field of tube-sheet welding, and more specifically relates to a welding height control method and device for fully automatic tube-sheet welding. Background technique [0002] Tube-sheet TIG welding is mainly used in the processing and manufacturing of petrochemical equipment such as pressure vessels and heat exchangers. This welding method has experienced three development stages from manual arc welding, semi-automatic arc welding to robot automatic arc welding. The robot has high processing efficiency and consistent welding quality, and has been gradually applied in the welding industry. However, the existing tube-sheet welding robot can only recognize the two-dimensional coordinate information of the tube, and cannot accurately and real-time control the welding height. [0003] The tube-sheet welding robot mainly obtains the position information of the workpiece to be welded through machine vision. Patent No. CN102152033...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/00B23K9/095
CPCB23K9/00B23K9/0953B23K9/0956
Inventor 黄禹荣佑民雷艇陈春梦熊鹏飞
Owner HUAZHONG UNIV OF SCI & TECH
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