Industrial robot motion control for joint tracking in laser welding
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منابع مشابه
Robot-sensor synchronization for real-time seam-tracking in robotic laser welding
The accuracy requirements of laser welding put high demands on the manipulator that is used. To use industrial six-axis robots for manipulating the laser welding optics, sensors measuring the seam trajectory close to the focal spot are required to meet the accuracy demands. When the measurements are taken while the robot is moving, it is essential that they are synchronized with the robot motio...
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Laser welding has a quite high demand on trajectory accuracy of articulated robot. To improve dynamic trajectory accuracy of articulated robots for laser welding, a novel 3D seam tracking method is proposed based on stereo visual feedback control. The method constructs a visual feedback control system with two convergent cameras mounted at the end of industrial robot. A tool coordinate system i...
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This paper presents a communication framework for integrating sensors in a robotic laser welding system. The framework was originally developed for the application of sensorguided robotic laser welding, but the principles are generic, making it useful in other application areas as well. To use the sensor measurements during the robot motion, a synchronisation mechanism is presented for an image...
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Because of their construction and flexibility, industrial robots are suitable to be used, with a laser source and an optical fiber, for laser welding of 3D products. However, the positioning accuracy of robots are insufficient for laser welding. Also the product and clamping tolerances are too wide for laser welding. These problems can be solved by applying sensors, which measure the location o...
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A current trend in the automotive industry is the application of joining techniques that contribute to lighter car bodies with higher stiffness, increasing at the same time the efficiency of the manufacturing process. An emerging technology is remote laser welding (RLW). It joins metal sheets by a laser beam, projected from a scanner mounted on an industrial robot. This enables contactless weld...
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