Application of circular laser vision sensor (CLVS) on welded seam tracking

Xu, Penghui; Tang, Xinhua; Yao, Shun

doi:10.1016/j.jmatprotec.2007.11.268

Cited by 38 publications

(7 citation statements)

References 10 publications

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“…Each of the sensors provides its respective advantages and limitations. Vision systems provide a lot of information about the weld pool characteristics [378,379] and appearance of weld seam surface such as seam tracking [380][381][382]. Photodiodes are relatively cheap and also provide rich information of high-frequency features coming from the thermal radiation of metallic vapor and molten pool surface.…”

Section: -16 / Vol 142 November 2020mentioning

confidence: 99%

Overview of Laser Applications in Manufacturing and Materials Processing in Recent Years

Shin

Lei

et al. 2020

Journal of Manufacturing Science and Engineering

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Recent years have witnessed a rapid growth of the laser market. Figure 1 shows the recent revenues of laser sales with about 50% increase in revenue over recent four years , which far exceeds the growth of other industrial sectors. More than one third of this revenue belongs to the category of laser materials processing arena. Undoubtedly, lasers have been playing increasingly important roles in various industrial manufacturing sectors. This article is to capture some of important developments in the rapidly growing areas of laser-based manufacturing and materials processing and also describe important technological issues pertaining to various laser-based manufacturing processes. The topics to be covered in this paper include more popularly used processes in industry such as laser additive manufacturing, laser-assisted machining, laser micromachining, laser forming, laser surface texturing, laser welding, and laser shock peening, although there are several additional areas of laser applications. In each section, a brief overview of the process is provided, followed by critical issues in implementing the process, such as properties, predictive modeling, and process monitoring, and finally some remarks on future issues that can guide researchers and practitioners.

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Section: -16 / Vol 142 November 2020mentioning

confidence: 99%

Overview of Laser Applications in Manufacturing and Materials Processing in Recent Years

Shin

Lei

et al. 2020

Journal of Manufacturing Science and Engineering

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“…A structured light is projected on the work piece surface ahead of the laser focus and the reflected scattered light is imaged back onto a camera. [57][58][59] The controller extracts information from the image that can be used for either weld detection or seam tracking. For seam tracking based on the optical triangulation, the information of trajectory between laser focus and detected point cannot be received during the welding.…”

Section: Visual Sensormentioning

confidence: 99%

Review of laser welding monitoring

You

Gao

Katayama

2014

Science and Technology of Welding and Joining

192

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Laser welding, as a highly efficient processing technology, has been widely applied to manufacturing industry. This paper makes an overview on real time monitoring of laser welding. It begins with a detailed introduction to six typical sensors (photodiode, visual, spectrometer, acoustical sensor, pyrometer, plasma charge sensor) in laser welding detection. Then it makes a review on multi-sensor fusion technology in both laser welding monitoring and adaptive control. Last, subjects for future research concerning welding monitoring and control have been proposed. The paper concludes that the real-time monitoring of laser welding can provide a great amount of valid information about welding status to help effectively identify weld defects and realize adaptive control.

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“…In addition, illuminators are coaxially integrated with the optical path of the laser beam [11,12], and the coaxial lighting does not intensify the contrast based on geometric differences. Therefore, the linear laser illuminators [13], geometrical patterns [14], and directional illuminators [9] are applied.…”

Section: Fig1 Laser Process Emissions and Sensing Stagesmentioning

confidence: 99%

Examples of Laser Processing Control with Machine Vision Feedback

Reiner¹,

Cieszyński²,

Sidorowicz³

et al. 2014

SSP

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Manufacturing technologies using laser radiation energy are gaining increasingly new applications. It results from their numerous advantages, most of all, from the selectiveness of a laser beam within the spatial and temporal domain. Although the laser beam is a very precise tool, it restricts the tolerances of component preparation. If such increased requirements drive previous processes, it will result in the increase of manufacturing costs of these parts. Hence, solutions are sought in the mechatronics paradigm, which corrects mechanical imperfections by means of electronics and software. Examples of the above solutions are follow-up and adaptive control systems. The paper presents examples of developed and implemented control systems of laser manufacturing processes with machine vision feedback. They include remote cutting with CAM-MV and laser cladding with a thermal or geometric closed-loop.

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Application of circular laser vision sensor (CLVS) on welded seam tracking

Cited by 38 publications

References 10 publications

Overview of Laser Applications in Manufacturing and Materials Processing in Recent Years

Overview of Laser Applications in Manufacturing and Materials Processing in Recent Years

Review of laser welding monitoring

Examples of Laser Processing Control with Machine Vision Feedback

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