Continuous calibration of a non-contact thermal sensor for laser sintering

An apparatus and a method of using the apparatus wherein a radiation emitter (140) is positioned adjacent a sensor means (142,144,145) within a process chamber (102) in a laser sinter system (100) that emits radiation to the sensor means and a calibration means receives readings from the sensor mean...

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Bibliographische Detailangaben
Hauptverfasser:	CHUNG, TAE MARK, PARTANEN, JOUNI P
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CLADDING OR PLATING BY SOLDERING OR WELDING COLORIMETRY CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PHYSICS RADIATION PYROMETRY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SOLDERING OR UNSOLDERING TESTING TRANSPORTING WELDING WORKING BY LASER BEAM WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	An apparatus and a method of using the apparatus wherein a radiation emitter (140) is positioned adjacent a sensor means (142,144,145) within a process chamber (102) in a laser sinter system (100) that emits radiation to the sensor means and a calibration means receives readings from the sensor means (142,144,145) to compare temperature sensings received from the sensor means with set emission signals from the radiation emitter (140) to adjust the temperature sensings to thereby calibrate the sensor means during the forming of a three-dimensional article. The calibration is done repeatedly during the build process of the three-dimensional article (Fig. 1).