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Manufacturing task description for robotic welding and automatic feature recognition on product CAD models

 
: Kuss, Alexander; Dietz, Thomas; Ksensow, Konstatin; Verl, Alexander

:
Volltext urn:nbn:de:0011-n-4457243 (331 KByte PDF)
MD5 Fingerprint: f1295dada953e9c2bbbcc07788850367
(CC) by-nc-nd
Erstellt am: 24.5.2017


Procedia CIRP 60 (2017), S.122-127
ISSN: 2212-8271
Design Conference <27, 2017, Cranfield>
Englisch
Zeitschriftenaufsatz, Konferenzbeitrag, Elektronische Publikation
Fraunhofer IPA ()
Roboterschweißen; CAD; Roboterprogrammierung; Robotersteuerung; 3D-CAD; CAD Modeling; robot path planning; CAD-Modell

Abstract
In this paper, a novel approach for an ontological representation of continuous-path manufacturing tasks is presented on the example of robotic fillet welding. The representation specifies manufacturing information and product related geometric constraints relevant for automatic program planning in robotic arc welding. The geometric constraints are transformed into simple continuous curve primitives such as lines, circular arcs and B-spline curves supporting the easy integration in robot program planning systems decoupled from a complex CAD environment. It also represents information on welding gaps along the joint geometry. Moreover, a method for automatic feature recognition based on rule- based pattern recognition is presented to automatically retrieve manufacturing information from the CAD model of the product and generate the respective manufacturing task specification. The method is evaluated in several test scenarios for welding product assemblies indicating the usability and effectiveness for automatic program planning in robotic welding.

: http://publica.fraunhofer.de/dokumente/N-445724.html