Daniel Teso-Fernández de Betoño. Photo: Nuria Gonzá.ez. UPV/EHU.
The PhD thesis by Daniel Teso-Fernández de Betoño of the UPV/EHU Faculty of Engineering in Vitoria-Gasteiz has resulted in a mobile, collaborative platform capable of performing tasks in motion at the Mercedes-Benz plant in the capital of Alava. The research opens up a new field for improving the ergonomics of these workstations and for the robot and human to collaborate by performing tasks together.
The idea of collaborative robotics with autonomous navigation to perform screwdriving tasks in motion emerged at the Mercedes-Benz plant in Vitoria-Gasteiz. To develop his PhD thesis, Daniel Teso-Fernández de Betoño sought to investigate, develop and implement an adequate, efficient technology within the lines of work, and which would cooperate with the workers.
On the Mercedes-Benz final assembly lines, the vast majority of tasks require manual operations. It is also an area where everything is in motion, which means that not all types of people can opt to work in these spaces.
Within the thesis produced by Daniel Teso, the research and development of a platform that follows the movement of the vehicle that is being worked on was essential. That avoids having to stop the assembly processes. Collaborative robotic technology and the mobile platform have been widely developed by large companies, but until now none of them operate while in motion. In other words, collaborative robots move to a workstation, the mobile platform is brought to a halt and the robot’s work begins.
The project includes two different pieces of research: firstly, the development of an AMR (Autonomous Mobile Robot) prototype using autonomous navigation is shown, and secondly, specific tooling is presented for Mercedes-Benz. AMRs are powerful mobile platforms that use autonomous indoor navigation to move around any known area. At the Faculty of Engineering in Vitoria-Gasteiz, such a platform was designed to develop location algorithms. In turn, work was carried out using an AMR and a collaborative robot, both commercial ones, inside the facilities of the Mercedes-Benz plant in Vitoria-Gasteiz. The development was used to work on the efficiencies of the workstations in which the robot was supposed to move, position itself and perform quality work in constant motion.
The prototype allows screwdriving tasks to be carried out on the move
The work concluded with the creation of a prototype inside Mercedes-Benz using technology available on the market, but with algorithms developed in the thesis, which allow screwdriving tasks to be performed while in motion. The prototype is able to self-reference with the vehicle on which it is going to work and thus gradually correct the movement of the mobile platform to follow it and, in turn, make small corrections to the robot’s positioning until the desired task has been completed.
Original Article: First collaborative robot to work with vehicles in motion
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