National Repository of Grey Literature 179 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Design and manufacture of bending fixture
Ševčík, Jan ; Trčka, Tomáš (referee) ; Zemčík, Oskar (advisor)
The work deals with the design and manufacture of bending fixture. It contains a comparsion with current bending fixtures on the market and a justification for the production of a given type. Then the work contains a proposal of the constuction of individual parts with the selection and description of technologies of their production and the process of their production. The work also contains complete drawing ducumentation of all parts of the bending fixture. The conclusion of the work contains the possibilities of design modifications and economic and technological evaluation.
Design and production of climbing hold using 3D FDM printing
Macůrek, Michal ; Varhaník, Matúš (referee) ; Zemčík, Oskar (advisor)
The first part of this bachelor’s thesis covers 3D printing methods, materials used in FDM 3D printing and posisbility of its use in manufacturing of climbing holds. Second part of this thesis is focused on mechanical analysis of designed holds. The remaining chapters are designated to actual printing, testing and economical evaluation of these holds.
Manufacturing of parts with lattice structure and topological optimization
Pospíšil, Jan ; Zemčík, Oskar (referee) ; Zouhar, Jan (advisor)
This thesis deals vith the design of welding torch holder using topology optimization and lattice structure. The objective of this thesis is gaining knowledge about topology optimization in different software and aplication of methods to that part. Conclusion of this thesis is about production design and economic evaluation.
Construction and production of 3D optical scanner
Běhůnek, David ; Zouhar, Jan (referee) ; Zemčík, Oskar (advisor)
The diploma thesis is focused on an optical method for 3D scanning. There is selected photogrammetry for creating 3D models. In the practical part, a mechanism for automatic photo capture is designed and manufactured and 3D printed with using a digital camera, Arduino microcontroller and stepper motors. There are proposed two methods of capturing photographs with which digital twins of reference objects are created. The result of the work is a functional 3D scanner. The next are evaluated used methods as well as the production costs and the time required by the operator when creating a digital copy of the object is listed.
3D print of composite materials
Kašpárková, Kristýna ; Zemčík, Oskar (referee) ; Zouhar, Jan (advisor)
The submitted thesis deals with a study of composite materials and processing them using 3D printing technology. The experimental part of this thesis is focused on the production of test samples with the use of additive technology Fused Deposition Modeling and Continuous Filament Fabrication. The composite samples made of common onyx material, individually reinforced with continuous carbon fiber filaments, kevlar, or fiberglass, were made with Marforged Mark Two 3D printer. The other samples made of PETG PM and PETG CFjet materials were made with Original Prusa i3 MK2S 3D printer. For technological evaluation, a tensile test was performed on samples, following the norm EN ISO 527-2:2012. Based on results obtained from tensile testing, the properties of materials strength and usability are verified and compared. In this work, the production process is proposed, and technical-economic evaluation is made. In conclusion, achieved results and overall benefits of this work are summarised.
Modification of 3D FDM delta printer frame for improvement of print quality
Butakov, Aleksandr ; Jaroš, Aleš (referee) ; Zemčík, Oskar (advisor)
This work is focused on solving the problems of delta 3d printer frame rigidity and impact of rigidity on final quality of 3d printing. A variant of a 3d printer on a classic Kossel-shaped frame has designed and built. Further, frame strength analysis and improvement design is performed, with subsequent production of a new variant and comparison of the 3d printing results of both variants. The result of this work is to show how the frame construction really affects the print quality.
Production of prototype mold parts using rapid prototyping methods
Kaloda, Vít ; Slaný, Martin (referee) ; Zemčík, Oskar (advisor)
The diploma thesis pointed out the possibility of using rapid prototyping methods in the field of plastic injection, specifically to make shaped inserts into the injection mold. The universal frame of the injection mold was used and only the shaped inserts were changed. The main part of the work was the construction of an injection mold with the subsequent practical production of shaped inserts for a specified part. In the introductory part, a theoretical search was performed, about which production methods in combination with suitable materials could be theoretically used. Furthermore, the polyjet and DLP methods were chosen, which were used to produce components (core and cavity). The result of the diploma thesis was a summary of all parameters, comparison of materials and production methods. Polypropylene and polyamide 6 materials were injected into the injection mold, from which the first prototype products were made. Instructions for the production of shaped inserts with the recommended technology and material were created for the selected type, which could be used in practice.
Design and production of car model chassis parts using FDM 3D printing
Výbohová, Petra ; Sliwková, Petra (referee) ; Zemčík, Oskar (advisor)
The object of reserach of my bachelor thesis is Fused Deposition Modeling 3D printing method. The aim of the final thesis was to design and manufacture parts of the car model chassis with remote control. The work is divided into 5 chapters. It contains 42 pictures, 4 tables and 10 attachments. The first part is dedicated to theoretical research of FDM 3D printing and FDM 3D printer. The second includes the realization of the chosen application and its technological – economic evaluation.
Bonding of 3D printed PET-G parts
Maxa, Ondřej ; Kupčák, Radim (referee) ; Zemčík, Oskar (advisor)
This bachelor thesis solves the problem of gluing PET-G material, which is used for printing 3D models in 3D printers. The goal is to select and then test the adhesive suitable for bonding the material. The suitability of the recommended adhesives was determined on the basis of standardized tests on experimental blasting equipment. Based on the measurement results, it is suitable to use one-component instant adhesives for gluing PET-G material, the advantage of which is easy handling and quickly achievable handling strength.
Design for Production of Clamping System
Tuza, Marek ; Zemčík, Oskar (referee) ; Sedlák, Josef (advisor)
This bachelor thesis deals with the development of a universal clamping system, which should be part of every home workshop. However, it is primarily intended for drilling operations. The theoretical part presents research on various types of clamping devices. This knowledge is later used in the practical part. The aim of this thesis was to create a design of the clamping system, to perform its complete production and to evaluate its features both from a technical and economic point of view. The output of this bachelor thesis is an entire universal clamping system and its detailed drawing documentation. Moreover, there are also suggested further developments and improvements. Even though the production of the clamping system itself appears to be economically disadvantageous in comparison with a commonly available clamping device, it is necessary in order to meet specific requirements. In conclusion, the overall evaluation of the production of the clamping system is given.

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