National Repository of Grey Literature 24 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Use of 3D printing in the Czech Republic
Kopecký, Miroslav ; Varhaník, Matúš (referee) ; Sedlák, Josef (advisor)
3D printing is a widely recognized and well established technique that enables the fabrication of complex structures with low production cost and easy scalability. In this study was conducted a comprehensive review of the applications of 3D printing in various industries in the Czech Republic. The first part of the research provides a summary of the different 3D printing techniques available, along with a comparison of relevant printing parameters and acquisition costs. The next part continues with description of the practical applications of the explained 3D printing methods in the Czech Republic industires. Namely, the applications in construction, automotive, education, and healthcare industries are discussed in more detail. The latter one is then brought into focus in the practical part of this work, where a medical aid is fabricated. Specifically the Fused Filament Fabrication (FFF) and Stereolithography (SLA) printing methods are used to fabricate a balance plates for lower limb proprioception training as a cost- effective alternative to commercially available product. Through a comparison of physical measurements, was found that the FFF method yielded more precise printouts. This research highlights the potential of 3D printing in delivering tailored medical aids, offering a promising avenue for future development.
Production of threads for consumer goods
Slováček, Dominik ; Varhaník, Matúš (referee) ; Kalivoda, Milan (advisor)
This bachelor’s thesis deals with the requirements for precision and the production of threads. The aim is to introduce the issue of threads and the use of cutting and non-cutting threading. At the end of the thesis, a specific method is applied in the production of the component.
Production of a replacement accelerator handle using a 3D printer
Vach, Pavol ; Varhaník, Matúš (referee) ; Zemčík, Oskar (advisor)
The aim of the bachelor thesis is the construction of replaceable and variant part of a motorcycle accelerator handle using 3D printing technologies. The theoretical section of thesis focuses on characterisation of methods FDM and DLP, which are used in the practical section, and characterisation of materials and adjustments of final prints. The design of models, technological analysis, verification with FEM, the process itself and evaluation of results is described in the practical section.
Measurement and checking of dimensions in grinding operations
Kovařík, Michael ; Varhaník, Matúš (referee) ; Trčka, Tomáš (advisor)
The bachelor thesis deals with the topic measurement and checking of dimensions in grinding operations. To introduce the issue there is in the introductory part of the work a brief characteristic and distribution of particular finishing operations. Emphasis is put on grinding that is the main subject of this work. In connection with grinding there are mentioned mainly basic abrasive materials and achieved parameters of ground surface. Then the work focuses on measuring instruments that are used for evaluating surface structure, gauges that are used for measuring and controling longitudinal dimensions and on basic distribution and description of chosen jigs. In another part are introduced conditions for operator qualifications in the are of grinding technology. In conclusion of this work is chosen a component on which is applicated chosen grinding, the solution is analytical. After it follows evaluation.
Design of a dental sandblasting device
Husár, Ján ; Sliwková, Petra (referee) ; Varhaník, Matúš (advisor)
In this diploma thesis, we propose a prototype of a dental sandblasting machine. This machine’s drawing is composed using a CAD program, which helped with checking the assembly ability. Later in this work, we discuss the design of each component and chosen technologies for production. We chose to describe in detail and prototype using the CNC machine the “exit jet” component, which combines an abrasive and air with water. The main outputs of this work are the prototype of this component and its technical rating and the technical-economical rating of the whole proposed design of the machine.
Variant production technology of a fan impeller
Macháček, Marek ; Varhaník, Matúš (referee) ; Zemčík, Oskar (advisor)
The thesis considers a change in the manufacturing technology of a fan impeller from welding to 3D printing. The wish of the manufacturer was to investigate if such a change is possible and financially profitable and decide on a further approach to manufacturing. Models were created using information from the manufacturer and using them, conditions for manufacturing the impeller in the 1:1 ratio were derived. Based on the new technological process and the experience from prints a new price calculation for the fan impeller using 3D printing was created.
Bonding of 3D FDM printed parts from ABS
Halabrín, Marek ; Varhaník, Matúš (referee) ; Zemčík, Oskar (advisor)
The thesis focuses on comparisons of usability of distinct types of glues to attach specimens. The specimens were glued using 4 types of glue: BISON Power Adhesive, BISON Epoxy Universal, PATTEX Repair Epoxy 5 min and a mixture of acetone with diluted ABS plastic as the last. The specimens underwent tensile and impact tests. For the tensile test, the specimens were made in 3 variants: blunt frontal joint, bevelled joint and gradually folded joint. For the impact test, the specimens were made in the form of a rod with a V-shaped notch. All variants of the joints consisted of 5 specimens with 3 unglued specimens for reference. The testing was conducted on the ZD 10/90 tensile strength machine and a Charpy impact test machine from the WPM company. The thesis contains technical-economic evaluation of the results of the tests with comparisons of the individual glues and forms.
Finishing machining of hard-to-machine materials
Filípek, Timotej ; Varhaník, Matúš (referee) ; Píška, Miroslav (advisor)
The Master‘s thesis focuses on processing of hard-to-machine materials by the finishing machining methods. The first chapter comprises division and characteristics of finishing technologies in the field of machining processes. The chapter following includes division and characteristics of the hard-to-machine materials. The experimental part – another significant part of the thesis – is focused on grinding of mostly bearing rings made of hard-to-machine materials. The aim of the experimental part is to compare and subsequently assess the use of various kinds of grinding wheels in the grinding process of a given workpiece material. Several parameters are examined from the technological and economic point of view. The assessment of the experimental part provides an overview on the advantages and disadvantages of the use of the grinding wheels in the grinding process of a given material for large-scale production. The conclusion is a summary of the results obtained in the experimental part.
A process of making a coffee table
Rehák, Andrej ; Varhaník, Matúš (referee) ; Koppová, Aneta (advisor)
The bachelor's thesis deals with the design and description of individual production processes of a coffee table. It contains a summary of today's trends in the production of tables, and making its own original design and suitable structural joints. Furthermore, the work focuses on the selection of suitable production technologies, used machines and tools for the production of the proposed product. Part of the work is necessary drawing documentation, production process of the selected part and photographs from the production itself.
Design of a shaft of single stage gearbox machining
Fiala, Dominik ; Trčka, Tomáš (referee) ; Varhaník, Matúš (advisor)
This bachelor thesis deals about design of machining single-stage gearbox shaft. The thesis consists of five main parts. The first part focuses on constructional-functioning characteristic of single-stage gearbox shaft. The second part focuses on shaft component analysis. The third part focuses on 3D model and component drawing. The fourth part focuses on preparation of TPV documentation and the last part is the evaluation of the design.

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2 Varhaník, Martin
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