Method for monitoring a protective glass

Monitoring of protective glasses (8) in laser machining heads, which are exposed to dust, sputtering and/or soiling, with the aim of predicting the contamination of the protective glass. For this purpose, image sections (19) are captured by means of at least two image capture systems (16) at capture...

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Bibliographische Detailangaben
Hauptverfasser:	Binswanger, Martin, Ungers, Michael
Format:	Patent
Sprache:	eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MACHINE TOOLS MEASURING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION SOLDERING OR UNSOLDERING TESTING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	Monitoring of protective glasses (8) in laser machining heads, which are exposed to dust, sputtering and/or soiling, with the aim of predicting the contamination of the protective glass. For this purpose, image sections (19) are captured by means of at least two image capture systems (16) at capture-times, computer-readable image files are stored by means of a frequency-based compression algorithm, and a file size value (kB) is determined for each image file on the basis of its file size. A signal is generated if for a majority of the image capture systems (16) the file size values (kB) decrease and/or are below one of a predefined number of threshold values (20) for a predetermined minimum number of consecutive capture-times.