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Machining of engine shafts for an elektric car
Janáč, Jakub ; Kalivoda, Milan (referee) ; Gregor, Lukáš (advisor)
The bachelor thesis deals with production of a rotational component – rotor shaft for an electric car. Based on a research of present electric cars and a study of a machining technology, the function and technological structure of the component is assessed. The proposal for manufacturing process for serial production is submitted next. The process is economically evaluated at the end of the thesis.
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Production of threads in thin-walled parts
Václavek, Petr ; Slaný, Martin (referee) ; Kalivoda, Milan (advisor)
The aim of this bachelor thesis is to describe and compare technologies used in a production of threads in thin-walled parts. It includes descriptions of commonly used materials for these parts and their qualities, that may have an influence on the thread production. The following are the descriptions of different methods of manufacturing threads directly into thin walls, forming different types of bushings and anchoring threaded fasteners. Special focus is on a comprehensive analysis of processes of welding, riveting and pressing nuts. The technological and economic suitability of each solution is then compared.
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Series Production of the Product "Case A"
Krejčíř, Jan ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
The subject of this bachelor thesis is to analyze production of front panels for IT cases. The manufacturing is done in the EMKO Case a.s. company on EMC Kosy3 Portal CNC machine, where were also made an experiment. The aim was to incrase production capacity. According to suggestions was made a practical test. The results are summarized in the technical-economic evaluation and in conclusion.
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Solution technology of production part cast in condition small engineering company
Gulda, Jiří ; Slaný, Martin (referee) ; Kalivoda, Milan (advisor)
The dissertation work focuses on the design and optimization of the castings and foundry technology and the production a particular model for the casting. The technology proposal and the pattern set building in 3D using CAD system. The casting simulation in CAE MAGMAsoft® system and evaluation of the proposed casting technology. Production of the pattern using CAD/CAM software and CNC machine tools with a focus on 3-axis and 5-axis machining. The economic benefits for the company.
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Battery pack for an electric car
List, Jaroslav ; Kalivoda, Milan (referee) ; Polzer, Aleš (advisor)
Thesis deals with the design of a battery box with lithium-ion technology, for the largest possible driving range of the BUT SuperEL II electric car. Based on the analysis of the electric vehicle available space and the parameters of the electronic system, the maximum size of the entire set of 84s130p batteries was designed. 18650 cells with NMC technology were selected due to the very high gravimetric and volumetric density, which reaches 274 Wh/kg and 564 kWh/m3. The total nominal capacity of the designed battery boxes in the electric car is 138 kWh. The total gravimetric energy density of the designed box is 215.6 Wh/kg. It allows the electric car to reach the theoretical range with a consumption of 14 kWh/100 km of almost 1000 km. The individual battery modules of the battery box are controlled for optimal operating conditions by means of a BMS. The whole set is divided into 5 battery boxes. These boxes are manufactured using the technology of bent welded sheets from aluminum alloy EN AW 1050A and steel 1.4301. FEM analyzes were performed to verify the mechanical strength of the designed structure. The work also deals with the design of battery modules and their connection.
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Technology Plasma Beam Machining
Sedlák, Ondřej ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
This diploma thesis focuses on the unconventional method of metal separation, namely on the cutting technology based on the plasma arc. The introductory part deals with studies which focus on the given issue from a theoretical point of view. The core of the work rests in the practical part which is dedicated to the production of samples using a plasma burning machine called Hypertherm HPR 260. The burned samples are monitored and assessed for the surface quality and dimensional accuracy for every created part. The final part of the work is dedicated to the techno-economic assessment of the burned parts. In the end, the evaluation of the attained results is made.
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Machining threading holes with cutting operation, pressing and shaping.
Rybář, Pavel ; Sedlák, Josef (referee) ; Kalivoda, Milan (advisor)
This project wrought in terms of bachelor studies program 2307 submits a proposal of technology of production internal thread in thin-walled components. Selection of technology is done on the basis of three basic methods evaluation – welding nuts, riveting nuts and thermal shaping. On the basis of literary studies the optimal application is proposed. There is reduced choice of tools and assembly equipment used only for one type of technology. The choice of fastening parts material is possible done in conformity with product material, thread strength according to whole construction or design engineer choice. For proper choice of technology there are technical data sheets of fastening parts and description of thread mechanical properties.
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