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A design of engraving plotter
Brtník, Vojtěch ; Tůma, Zdeněk (referee) ; Tůma, Jiří (advisor)
This bachelor thesis, in addition to the actual design of the laser engraving laser, contains basic information about laser engraving technology and marking used in industry. It explains the physical principle of the laser and the laser source, which is essential to understand and classify laser modules. Provides an up-to-date market survey of the laser engraving modules and engraving plotters in use. In the design part, the design of an engraving plotter for SMC company is carried out using 3D models in Solidworks 2022 according to the specified parameters. The plotter design includes the selection of a suitable linear motion unit with electric drive, the assumed control, control calculations and the design of the plotter structural elements. The next section deals with the design of the support part and includes safety and functional elements. The paper concludes with a cost evaluation and recommendations for practice.
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Welding manipulator construction design
Fuks, Šimon ; Tůma, Zdeněk (referee) ; Štěpánek, Vojtěch (advisor)
This bachelor thesis deals with the design of a five-axis welding manipulator as an additional device to a welding table. The research focuses on knowledge from arc welding automation, especially on the use of industrial robots and manipulators in this area. A rich selection of accessories for robotic arc welding is also summarized. In the practical part, several conceptual variants are proposed, and the most suitable variant is further developed. The basic technical calculations of the manipulator are presented and the individual construction details are discussed. Furthermore, the work deals with the safety and control possibilities of the designed manipulator. The work also includes a drawing of the overall assembly.
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Financial Performance of European Cooperative Banks
Kuc, Matěj ; Teplý, Petr (advisor) ; Tůma, Zdeněk (referee) ; Tripe, David (referee) ; Witzany, Jiří (referee)
This dissertation consists of four essays dealing with the financial performance of European cooperative banks. We focus on a comparison between the performance of cooperative banks and that of shareholder-owned commercial banks. Furthermore, we compare different cooperative banking models in Europe, paying special attention to the Czech credit union sector. In the individual essays, we examine different performance measures depicting profitability, stability and cost efficiency. The topic of the financial performance of cooperative banks is highly relevant, as cooperative banks are structurally different from the standard commercial banking model and they have a significant market share in several European countries, while most of the empirical literature focused on banking financial performance is devoted solely to commercial banks. The first essay of this dissertation thesis empirically assesses the financial performance of Czech credit unions compared to that of cooperative banks from 15 European countries in terms of their profitability and stability. Employing dynamic panel data methods, we reveal that the performance of Czech credit unions in terms of both profitability and stability is worse than that of their European peers. In the second essay, we compare the financial performance of cooperative...
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Bank's performance in low and negative interest rate environment
Hanzlík, Petr ; Teplý, Petr (advisor) ; Tripe, David (referee) ; Witzany, Jiří (referee) ; Tůma, Zdeněk (referee)
Dissertation thesis Banks' performance in low and negative interest rate environment Author: Mgr. Petr Hanzl'ık Abstract This dissertation consists of four empirical papers that focus on the performance of banks in the low or even negative interest rate environment characteristic for the decade after the global financial crisis of 2007-2009. The first paper focuses on the analysis of a re- lationship between the net interest margin (NIM) of EU banks and market interest rates in a low-interest rate environment while controlling for the impact of market concent- ration by examining a large sample of annual data on 629 banks from EU countries for the 2011-2016 period. The results show a positive concave relationship between NIM and short-term interest rates, deterioration of NIM for all types of banks and a higher market concentration leading to higher NIM. In the second paper, we examine the determinants of NIM of European and US banks in a zero lower bound (ZLB) situation while control- ling for institutional design factors, i.e. difference between capital-based and bank-based financial markets. We analyse a large sample of annual data on 629 European banks and 526 US during the 2011-2016 period confirming that NIM is significantly influenced by the different institutional designs. The third paper deals with...
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Design of a small lathe for wood
Mečíř, Václav ; Tůma, Zdeněk (referee) ; Pavlík, Jan (advisor)
The bachelor's thesis describes the design process of a small wood lathe. The proposal itself is preceded by acquaintance with the issues and technical possibilities of this time. This is related to market research and comparison of individual lathe variants, with respect to the required machine parameters. The subsequent design contains a calculation report in which the transmission system and the spindle design, on which the greatest emphasis is placed, are solved, as it is the most important part of the lathe. Based on the calculation report, a 3D model and drawing documentation is created in Inventor 2021.
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Design of end effector for a robotic cell
Machala, Lukáš ; Pavlík, Jan (referee) ; Tůma, Zdeněk (advisor)
This Master´s thesis deals with the design of end effectors for object manipulation within robotic cell located at the Department of Production Machines, Systems and Robotics, Brno University of Technology. The theoretical part of the work is devoted to a summary of the current state of knowledge in the field of end effectors. The practical part deals with draft of several variants of the solution, from which is chosen optimal variant by the method of multicriteria analysis, after which follows the construction of individual end effectors. The work includes individual 3D models of these end effectors and a rack for their storage, the work also includes assembly and part drawings. The work ends with an economic evaluation, discussion of achieved results and a conclusion.
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Design of magnetic drilling machine
Jun, Lukáš ; Tůma, Zdeněk (referee) ; Tůma, Jiří (advisor)
The thesis is focused on a specific type of drilling machines, the magnetic drills press. These machines are typical for their magnetic base and are used mainly to machine magnetic materials, nonetheless, with suitable accessories, also the non-magnetic materials can be machined. The first part of the thesis begins with a description of the individual parts of the magnetic drill, their types and an overview of the accessories. The second part of the thesis contains the design of the drill itself. Cutting conditions for a 20mm twist drill and a 60mm annular cutter are defined. Based on the cutting conditions the motor is selected, then the design of a gearbox, selection of bearings and the whole assembly of the gearbox is described. Calculations of gearing, 3d model, drawing of assembly and two parts are attached with the thesis.
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Design optimization of the industrial part using finite element method and machine learning
Výbohová, Petra ; Tůma, Zdeněk (referee) ; Augste, Jan (advisor)
The object of research of my master thesis is optimization of 3D print using fused deposition modelling method. The goal of the thesis was to research influence of design parameters and mechanical properties and to come up with way how to research and optimize shapes for 3D print. Thesis is divided into 6 chapters. It contains 80 pictures, 12 tables and 4 attachments. The first part is theoretical research of optimization, finite element method and 3D print method. The second part is about 2 methods of 3D print, risk analysis and optimization.
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Energy savings in pneumatic systems operations
Klement, Jakub ; Tůma, Zdeněk (referee) ; Knoflíček, Radek (advisor)
Master’s thesis deals with energy savings in the operation of pneumatic systems. In the first part, the elements used in pneumatic systems are described and the theory of energy saving is researched. As the thesis is written in cooperation with SMC company, it also analyses energy saving audits carried out by this company. The practical part contains the results of measuring of selected most common problems related to energy waste and their application on a sample example. The practical part also includes documentation for further training of design engineers and a 3D model of a tutorial panel.
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Use of Head-mounted displays in risk management for machine tools
Jelínek, Martin ; Kotek, Luboš (referee) ; Tůma, Zdeněk (advisor)
This diploma thesis deals with the design and technical possibilities of VR headsets and their application in mechanical engineering, specifically in the field of risk management in machine tools, using experience from other areas and history. The practical part of the thesis comprises a risk analysis carried out on a single selected machine (vertical machining center) by means of checklists and virtual technologies. The risk analysis techniques used are subsequently compared and evaluated. The results are then assessed and a proposal for the use of virtual reality in practice is put forward.
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