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Postavitev in evaluacija laserske obdelovalne postaje s sistemsko natančnostjo pod mikrometrom
ID Tuta, Janko (Author), ID Petkovšek, Rok (Mentor) More about this mentor... This link opens in a new window, ID Mur, Jaka (Comentor)

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Abstract
Laserski obdelovalni sistemi dosegajo tipično sistemsko natančnost na nivoju mikrometra. Preseganje te meje prestavlja zahtevno reševanje kombinacije optimizacijskih nalog, ki zahtevajo uporabo kompleksnih tehnoloških rešitev. V delu se osredotočimo na raziskavo laserske postaje, ki posega v svet submikronske natančnosti. V nalogi je zasnovana in postavljena eksperimentalna laserska obdelovalna postaja, z uporabo pozicionirne mizice z zračnimi ležaji, ki ponuja sub-mikronske natančnosti. Opisana je konstrukcija, optični sistem, osvetlitev vzorca preko Köhlerjeve osvetlitve, način fokusiranja laserja, ter način nadaljnje sklopitve laserskih virov. Sliko obdelovanca smo spremljali s hitro kamero, ter izvedli analizo gibanja vzorca s sub-pikselsko metodo fazne križne korelacije, ter rezultate primerjali z meritvami enkoderja mizice. Mizica glede na obseg analize dosega največje izmerjene odstopke v velikosti 0,4 µm, ob uporabo manjših pospeškov pa 0,01 µm.

Language:Slovenian
Keywords:laserji, laserska litografija, križna korelacija, fazna korelacija, zračni ležaji, sistemske natančnosti, laserske obdelave
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Place of publishing:Ljubljana
Publisher:[J. Tuta]
Year:2023
Number of pages:XX, 66 str.
PID:20.500.12556/RUL-148964 This link opens in a new window
UDC:621.9.048.7:621.375.826(043.2)
COBISS.SI-ID:167821571 This link opens in a new window
Publication date in RUL:02.09.2023
Views:2340
Downloads:560
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Secondary language

Language:English
Title:Design and evaluation of a laser processing station with system precision below one micrometer
Abstract:
Laser machining systems typically achieve system accuracy at the micrometer level. Crossing this boundary presents a challenging combination of optimisation tasks that require use of complex technological solutions. In this work, we focus on the research of a laser station that reaches into the world of submicron precision. In this thesis, an experimental laser machining station is designed and set up, using an air-bearing positioning table offering sub-micron accuracy. The construction, optical system, illumination of the sample by Köhler illumination, laser focusing system, and an option to further couple laser sources are described. During research workpiece was monitored with a high-speed camera, and motion of the sample was analysed using sub-pixel phase cross-correlation method. The results were compared with the measurements of the table encoder. In the scope of measurements a maximum deviation of the table of 0,4 µm is measured, and a minimum of 0,01 µm when lower accelerations are applied.

Keywords:lasers, laser lithography, cross correlation, phase correlation, air bearings, system precision, laser machining

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