Title :
In process 3D-sensing for laser material processing
Author :
Klinger, P. ; Spellenberg, B. ; Hermann, J.M. ; Häusler, G.
Author_Institution :
Erlangen-Nurnberg Univ., Germany
Abstract :
In this paper we present a new sensor that can measure on-line the material wear in laser material processing. To meet the demands of industrial production optical rough surfaces have to be measured at low apertures within the rough environment generated by the production process. Hence, common sensors have a quite poor performance. It is hardly possible to measure the material wear through the plasma occurring in the working zone at temperatures above 3000 K. We solve this problem by utilising just this plasma spot as a signal from which we evaluate the distance between sensor and work piece. The specific features of the sensor are: it is insensitive against the spot size and shape, and hence accurate, even with low aperture and within the turbulent atmosphere. The time for one measurement is one millisecond
Keywords :
laser materials processing; rough surfaces; wear; industrial production optical rough surfaces; laser material processing; material wear; plasma spot; process 3D-sensing; turbulent atmosphere; working zone; Apertures; Materials processing; Optical materials; Optical sensors; Plasma materials processing; Plasma measurements; Plasma temperature; Production; Temperature sensors; Wearable sensors;
Conference_Titel :
3-D Digital Imaging and Modeling, 2001. Proceedings. Third International Conference on
Conference_Location :
Quebec City, Que.
Print_ISBN :
0-7695-0984-3
DOI :
10.1109/IM.2001.924392
