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Adaptive control method of welding torch height in welding autotracking system and its equipment

A self-adaptive control and automatic tracking technology, applied in welding equipment, manufacturing tools, arc welding equipment, etc., can solve problems such as inability to track and process, achieve short information processing time, low price, and ensure welding quality. Effect

Inactive Publication Date: 2004-10-27
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the surface finish of the workpiece changes greatly, for example, when it is polished brighter, the signal received by the linear array CCD tends to be saturated, so it cannot be processed and tracked

Method used

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  • Adaptive control method of welding torch height in welding autotracking system and its equipment
  • Adaptive control method of welding torch height in welding autotracking system and its equipment
  • Adaptive control method of welding torch height in welding autotracking system and its equipment

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Embodiment approach

[0025] For automatic tracking sensor in left and right (horizontal) direction works like figure 1 shown. The laser structured light is obliquely incident from the front, and the line array CCD sensor receives the scattered light signal in the vertical direction. figure 1 Device 1 in represents the emitting part of the CCD vision sensor, including a laser diode and a cylindrical lens. The laser is emitted from the laser diode, and after passing through the cylindrical lens, it converges into a very narrow light band on the surface of the workpiece, which is called structured light. The light plane is incident on the workpiece at an angle, causing reflection and scattering on the workpiece. exist figure 1 The receiving part of the automatic tracking sensor includes a filter 6, a circular lens 7 and a linear array CCD device 8, and the linear array CCD device 8 only receives scattered light in the vertical direction. At this time, the scattered light band on the surface of th...

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Abstract

The present invention relates to a method for controlling height of torch by utilizing linear array CCD sensor and proximity switch. Said method includes the computer for processing groove image. A / D and I / O interface circuits, linear array CCD sensor, horizontal position actuating mechanism and high-low position actuating mechanism, two proximity switches mounted at same height and software control program stored in the computer for selecting two proximity switches. When the smooth finish of workpiece surface produces larger change, according to processing result of groove image the computer can select some proximity switch to control height of torch. Said invention not only can effectively ensure welding quality, but also possesses higher cost performance ratio.

Description

technical field [0001] The invention relates to a horizontal and vertical automatic tracking system of a welding torch in a welding process, in particular to a method and device for controlling the height of a welding torch in a linear array CCD visual tracking system, and belongs to the technical field of welding process and equipment automation. Background technique [0002] It is an important prerequisite to ensure welding quality to keep the welding torch centered with the weld seam all the time during the welding process. The submerged arc welding process is invisible because the welding arc is buried under the flux layer, and the deviation between the welding wire and the weld seam is a frequent problem during the welding process. This problem has seriously affected the welding quality, production efficiency and economic benefits. It is obviously the key to ensure the welding quality of submerged arc welding to keep the welding torch in the center of the welding seam ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/12B23K9/127
Inventor 王克争何方殿
Owner TSINGHUA UNIV