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Weld seam tracking device

A tracking device and tracking system technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as difficult tracking, high price, and inability to accurately track real-time, and achieve the effect of improving accuracy and avoiding accuracy.

Active Publication Date: 2017-12-26
JIANGSU UNIV OF TECH +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

It is characterized by no arc interference, reliable operation and low cost. It has been widely used in production, but the tracking accuracy is not high.
As a real-time sensing device, the direct arc sensor has the characteristics of simpler structure, low cost and fast response compared with other types of sensors, but the disadvantage of the arc sensor is that it is difficult to track the butt joints and lap joints of thin plate parts , and it is impossible to know the size of the welding cross-sectional area; and the vision sensor, due to the slow image processing speed and various strong interferences such as welding light, arc heat, spatter, and smoke, cannot accurately track in real time
Due to the high precision and good anti-interference performance of laser measurement, the robot welding tracking sensor made by combining it with CCD has been applied, but the price is generally more expensive

Method used

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] In the present invention, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

[0022] Such as Figure 1-4 Shown is the seam tracking device of the present invention, including a control system and a servo motion system 1, a welding system ...

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Abstract

The invention belongs to the technical field of welding and particularly relates to a weld seam tracking device. The weld seam tracking device comprises a weld seam tracking device body and further comprises a control system, a servo motion system, a welding system and a weld seam tracking system, wherein the servo motion system, the welding system and the weld seam tracking system are electrically connected with the control system. The welding system and the weld seam tracking system are arranged side by side. The weld seam tracking system comprises a diffuse reflection optical fiber and an optical fiber amplifier arranged on the diffuse reflection optical fiber. The diffuse reflection optical fiber is composed of multiple optical fiber heads. Each optical fiber head independently emit light and the light is transmitted to the control system through the optical fiber amplifier. The control system acquires the positions and depths of weld seams of workpieces to be welded. By the adoption of the weld seam tracking device, the weld seam width and the depth information can be identified accurately, and meanwhile the measurement numerical values are fed back to the servo motion system for tracking the directions of the weld seams, so that the welding quality is improved.

Description

technical field [0001] The invention belongs to the field of welding technology, and in particular relates to a welding seam tracking device. Background technique [0002] In automatic servo welding occasions such as robots, in order to overcome the influence of uncertain factors such as weld size and section inconsistency on welding quality and improve the reliability of automatic servo welding, it is necessary for automatic servo mechanisms such as robots to be able to adjust the position online in real time to ensure that the welding torch is centered and welded seam center to ensure the quality of weld seam formation. At present, seam tracking usually uses sensors for detection, and then uses a closed-loop servo system for real-time tracking. Welding sensors can be divided into three categories: direct arc type, contact type and non-contact type. The contact sensor generally uses a guide rod or a guide wheel in front of the welding torch to contact with a side wall of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/127
CPCB23K9/1274
Inventor 杨龙兴俞学军张陈杨浩轩蒋新华
Owner JIANGSU UNIV OF TECH
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