Tuesday, May 22, 2018
Publication Date: 09/1/2009
Archive >  September 2009 Issue >  Special Features: PCB and Assembly > 

A Universal Vision Solution for Robotics
Robot with vision picks up parts no matter their orientation.

A major Italian integrator of vision guided robotic solutions, Evolut, has already asserted itself as the specialist company in its field. The company has installed over 1100 robotic systems, including 850 with Cognex vision systems, which enable the robots to automatically recognize and identify objects with precision and to measure and inspect them. This functionality is a critical element in the huge range of production systems available today.

A systems integrator born initially as a strategic partner of ABB Italy, Evolut's robotic systems are found in all types of industries all over the world. The company has installed robotic solutions in such sectors as loading/unloading utensil machines, machinery equipment, printing presses, die casting machinery and plastic injection machinery.

A typical robotics application where vision is used is when the arm of a robot recognizes an item, picks it and positions it at any given moment on an assembly line. For this the Italian company deploys its vision-guided robotic system, Hawk, which is a system based on VisionPro technology from Cognex. Using Cognex image acquisition cards, the installation can manage up to 10 cameras and reduce the time required for image acquisition. The system also relies on PatMax, Cognex's special software for recognition and localization of parts. Because of PatMax, Hawk is capable of identifying and finding a diverse range of objects. The robot receives, in order, the data and as such is able to follow the handling of pieces no matter how they are oriented. Approximately 50 percent of the installations benefit from this technology. The camera acquires the image, position and orientation of the part or object and communicates this to the robot which is then able to pick it up.

Using the Software
In a typical application, the Evolut robot relies on VisionPro and PatMax to obtain enough precise information on the position of a piece so that any surplus material on a joint can be located, measured exactly and removed.

Because of its ability to adapt to the specific production environment, PatMax can simplify the planning and construction of a robotic station. Since the system can easily measure the objects no matter how they are placed, costly mechanical feeders or pallet systems are no longer necessary. The positioning of optical machinery and video cameras is simplified by PatMax because it can adapt itself to the varying orientation, dimension, or aspects of its environment. The system makes it possible to eliminate the need to re-program or adjust the original setup if the system is moved to another part of the production line.

Contact: Cognex Corp., One Vision Dr., Natick, MA 01760-2059 877-264-6391 or 508-650-3000 fax: 508-650-3333 Web:

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