Kahe 10,6 μm lainepikkusega laserkiire kombineerimine lõikerakenduste jaoks
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Kuupäev
2026
Kättesaadavus
Suletud / Closed, korraldus nr. 6-1.MI/197
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Laserlõikamise puhul on tegu kiire ja täpse viisiga materjali töötlemiseks ning selle tõttu nende populaarsus kasvab. CO2 laserlõikurite puhul on laser kulumisosa, mille ootamatu riknemine võib seisata tootmise ning asendamine olla kulukas.
Käesoleva töö eesmärk on uurida võimalusi ning projekteerida ja katsetada CO2 kahe laseri kiire liitmist lõikerakenduste jaoks, et pakkuda suurendatud laseri võimsust soodsalt ja kompaktselt. Töös uuriti olemasolevaid viise suure (> 160 W) laseri võimsuse saavutamiseks ning kiirte liitmiseks ja pakuti lahenduse hüpotees. Selle tõestamiseks teostati teoreetilisi arvutusi, projekteeriti ja ehitati katserakis ning teostati esmased katsed.
Teoreetilised arvutused näitasid, et arvutuslik kiire kuju fookuspiirkonnas on väiksem, kui tavaline laseri lõikejoon. Esmase katsena lõigati 15 mm paksu läbipaistvat PMMA lehte, et jäädvustada lõikekiirte kuju ning neid hiljem visuaalselt võrrelda. Tulemused viitasid, et kiirte ruumiline liitmine on võimalik. Kaks kiirt püsisid eraldamatult ühes lõikejoones ja muutsid lõike joone seinad paralleelsemaks, kui üksikut laserit kasutades. Katse esmased tulemused on positiivsed, kuid enne tehnoloogia lõikepinki paigaldamist on võimalik teostada lisakatseid tehnoloogia edasi kontrollimiseks.
Laser cutting is a fast and precise way for processing material and because of this, their popularity is growing. Laser source is a CO2 laser cutters consumable, which’s unexpected failure can stop production and be costly to replace. The aim of this thesis is to search for and test solutions for combining two CO2 laser beams for cutting applications to provide an increased laser power cheaply and compact. The thesis investigated existing methods for achieving high (> 160 W) laser power and beam combining to propose a solution hypothesis. To prove this, theoretical calculations were made, a test rig was designed and built and initial tests were performed. The theoretical calculations concluded that a theoretical laser beam is smaller than a regular laser kerf. For the initial tests, a 15 mm thick transparent sheet of PMMA was cut to capture the shape of the cutting rays and later visually compare them. The results concluded that spatial combining of laser beams is feasible. The two beams stayed inside one cutting line and made the walls of the kerf more parallel than when using a single laser. The initial results were positive, but additional tests can be made to verify the technology before installing it in a laser cutting machine.
Laser cutting is a fast and precise way for processing material and because of this, their popularity is growing. Laser source is a CO2 laser cutters consumable, which’s unexpected failure can stop production and be costly to replace. The aim of this thesis is to search for and test solutions for combining two CO2 laser beams for cutting applications to provide an increased laser power cheaply and compact. The thesis investigated existing methods for achieving high (> 160 W) laser power and beam combining to propose a solution hypothesis. To prove this, theoretical calculations were made, a test rig was designed and built and initial tests were performed. The theoretical calculations concluded that a theoretical laser beam is smaller than a regular laser kerf. For the initial tests, a 15 mm thick transparent sheet of PMMA was cut to capture the shape of the cutting rays and later visually compare them. The results concluded that spatial combining of laser beams is feasible. The two beams stayed inside one cutting line and made the walls of the kerf more parallel than when using a single laser. The initial results were positive, but additional tests can be made to verify the technology before installing it in a laser cutting machine.
Kirjeldus
Rakenduskõrghariduse lõputöö
Tehnotroonika õppekaval
Märksõnad
lõputööd, CO2, gaaslaser, kiirte liitmine, kahe kiirega laser