Automatic scanner for welding seam detection for laser positioning

Abstract

The invention discloses an automatic scanner for welding seam detection for laser positioning. The automatic scanner comprises a walking mechanism and a positioning reference device, wherein the positioning reference device is detachably arranged on a to-be-tested workpiece and used for assisting positioning guiding; the walking mechanism comprises a walking frame and a walking part, and the walking part is used for supporting the walking frame to move on the to-be-tested workpiece; a walking control mechanism, a distance measuring device and a scanning mechanism are arranged on the walking frame, the walking control mechanism is used for controlling the walking part to walk, and the distance measuring device is used for measuring the distance between the walking mechanism and the positioning reference device so as to ensure the movement direction of the walking mechanism; the scanning mechanism is moved along with the walking mechanism to scan. The automatic scanner has the advantagesthat the intelligent effect is realized, the operation is convenient and rapid, and the like; the problems of technology distortion and scanning missing due to low manual scanning accuracy are solved; the labor intensity of a detection worker can be decreased, the detection efficiency is improved, and the like.

Description

technical field [0001] The invention relates to the field of non-destructive testing of equipment, in particular to an automatic scanner for welding seam testing with laser positioning. Background technique [0002] Due to the mutual competition in the product market, high quality is an important factor to improve competitiveness. From the point of view of product quality, this is important. From a purely economic point of view, reliability is also necessary in order to reduce the total expenditure. Non-destructive testing has played an important role in the quality assurance system and has become an important means to control product quality and ensure the safe operation of in-service equipment; for general non-destructive testing, quality inspectors often rely on flaw detection instruments for manual testing, which makes artificial Factors have a great influence on the test results. As an advanced ultrasonic testing method, phased array testing is used to detect internal ...

AI Technical Summary

Problems solved by technology

This scanning method can be done manually, but scaffolding needs to be erected at the location of the phased array detection, which is very dangerous for high-altitude operations, and the working environment is relatively harsh. During the detection process, the phased array probe must be kept at a certain distance from the weld. The distance of the weld seam cannot be changed arbitrarily, otherwise, the detection area will not be fully covered by the ultrasonic beam, and the workpiece will be missed; at the same time, the change of the distance from the probe to the weld seam will also affect the accuracy of defect location and affect the defect judgment and elimination, resulting in misjudgment of defects or failure to completely eliminate them. Missing inspections, misjudgments and failure to completely eliminate defects will bury safety hazards for workpieces or equipment. Therefore, the requirements for testing personnel are relatively high. The reliability of the detection results is not high; in addition, this scanning method can also slide with the help of precisely positioned rails to complete the scan, but since building a precisely positioned rail is not only time-consuming and consumable, it is also not conducive to repeated use. When detecting another When installing equipment, it is necessary to rebuild the track, which increases the cost of inspection

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