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Bachelor's Thesis
Author of thesis: Bc. Ondřej Wölfel
Acad. year: 2025/2026
Supervisor: Ing. Adam Fábry
Reviewer: Ing. Vojtěch Florián
This thesis deals with the design and realization of a CNC laser engraver intended for processing non-metallic materials of smaller dimensions. The aim of the thesis is to design a partially self-replicating machine at an acceptable acquisition cost, comparable to freely available laser devices. A machine with Cartesian gantry system kinematics was designed and constructed, with a working area of 255×255 mm and an original principle of prestressed layer stacking (PVD). The machine is equipped with safety features, enclosed by a cover with fume filtration and capable of autonomous operation without the need for a PC connection. Testing established the cutting parameters, speed 200 mm/min at 100% power and 2 passes, with a kerf width of 0.10–0.15 mm and a maximum tested travel speed of 6,000 mm/min. The result is a functional Class 4 laser machine capable of self-replication of main structural components and autonomous operation. The thesis demonstrates that a laser device can be realized at a cost comparable to commonly available open-frame engravers.
CNC laser engraver, self-replication, diode laser, prestressed layer stacking, Cartesian gantry system
Date of defence
10.06.2026
Result of the defence
Defended (thesis was successfully defended)
Grading
B
Process of defence
Student prezentoval svou závěrečnou práci a odpověděl na otázky vedoucího i oponenta. Dále odpovídal na dotazy členů zkušební komise a to následovně: Jakým způsobem jste řešil dynamické účinky od rychlých přejezdů? - částečně odpověděl
Language of thesis
Czech
Faculty
Fakulta strojního inženýrství
Department
Institute of Automotive Engineering
Study programme
Engineering (B-STR-P)
Specialization
Machine and Equipment Construction (SSZ)
Composition of Committee
doc. Ing. Miroslav Škopán, CSc. (předseda) Ing. Lukáš Zeizinger, Ph.D. (člen) Ing. Jiří Hloska, Ph.D. (člen) Ing. Přemysl Pokorný, Ph.D. (člen) prof. Štefan Čorňák, Dr. (místopředseda)
Supervisor’s reportIng. Adam Fábry
Grade proposed by supervisor: B
Reviewer’s reportIng. Vojtěch Florián
Grade proposed by reviewer: C
Responsibility: Mgr. et Mgr. Hana Odstrčilová