THE ARROW PROJECT (ACCURATE AND RAPID ROBOTS WITH A LARGE OPERATIONAL WORKSPACE) IS CARRIED BY IRCCYN (INSTITUTE FOR RESEARCH IN COMMUNICATIONS AND CYBERNETICS OF NANTES) IN PARTNERSHIP WITH LIRMM (THE LABORATORY OF COMPUTER SCIENCE, ROBOTICS AND MICROELECTRONICS OF MONTPELLIER), TWO CNRS MIXED RESEARCH UNITS.
The LIRMM wants a demonstrator to validate by experimental tests their research allowing to overcome the technological obstacles, which currently limit the productivity of certain industrial applications carried out by a robot.
Designers are forced today to choose between speed OR precision because, on the one hand, the accelerations involved cause phenomena that affect precision, and on the other hand, precise machines are generally massive and therefore not very fast. However, ultra-fast and very precise robots would considerably improve the performance of certain applications such as laser machining and micro-components assembly.
■ 20 g acceleration
■ Absolute precision of less than 20 µm in a parallelepipedal workspace with a 1m side
This 3.80 m wide and 1.70 m high system consists of 6 linear motors fixed on rails. A continuous rotation is fixed at the end of the effectors to set in motion the spindle machining the materials.