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The Impact of Different Manufacturing Technologies and Thermal Processing of Groove Profiles on the Service Life of Ball Screws
Drábek, Michal ; Jaroš, Aleš (referee) ; Sedlák, Josef (advisor)
The aim of this thesis is ball screw service life measurement. Text is divided on two major parts, theoretical one and practical one. Theoretical part describes three basic methods of ball screws manufacturing – rolling, whirling and grinding. Subsequently, methods of heat treatment (inductive and laser hardening) are mentioned. Practical part is devoted to ball screw service life testing and evaluation of results. Tests were carried out on two sets of two ball screws. First set was manufactured by whirling and grinding followed by inductive hardening. Second set was manufactured by grinding followed by inductive hardening in one case and laser hardening in the second one. Test results were evaluated according to international standards.
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Measurement of roughness of the laser cutting edge
Drábek, Michal ; Šknouřilová, Eva (referee) ; Mrňa, Libor (advisor)
This bachelor thesis deals with laser cutting technology. The thesis is divided into theoretical and practical part. In the theoretical part is described the basic principle and function of the laser and the distribution of different types of lasers. Descriptions of each use of lasers in the engineering industry follow, more attention is mainly devoted to laser cutting. In the experimental part is presented a methodology to measure the roughness of the test samples which were cut from stainless steel X5CrNi18-10, the subsequent evaluation of the roughness parameters and comparison with the norm ČSN EN ISO 9013.
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Soviet Geopolitics and Geostrategy in the Era of N. S. Khrushchev and L. I. Brezhnev
Drábek, Michal ; Romancov, Michael (advisor) ; Žídková, Markéta (referee)
The main aim of this diploma work is to present the main topics of the soviet geopolitical thinking. The main thesis are presented at the beggining of the work and were influenced mainly by personality of Joseph Stalin. At the end of the first chapter those main goals of the soviet geopolitics are evaluated as well as the role of Stalin for the USSR. The timeline of this diploma work streches from 1953 - 1982 and the main events of this period are mentioned. At the end the role of the three soviet leaders is summarized and their actions evaluated.
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Řízení likvidity ve vybraném podniku
Drábek, Michal
Drábek, M. Liquidity management in the selected business. Bachelor thesis. Brno: Mendel University, 2018. The thesis is focused on liquidity management in Měšťanský pivovar v Poličce, a.s. Because of complexity a financial analysis is processed at first than the current liquidity management is analysed from the point of view of the current assets components. The conclusion is focused on recommendations formulated to increase the process efficiency.
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The Impact of Different Manufacturing Technologies and Thermal Processing of Groove Profiles on the Service Life of Ball Screws
Drábek, Michal ; Jaroš, Aleš (referee) ; Sedlák, Josef (advisor)
The aim of this thesis is ball screw service life measurement. Text is divided on two major parts, theoretical one and practical one. Theoretical part describes three basic methods of ball screws manufacturing – rolling, whirling and grinding. Subsequently, methods of heat treatment (inductive and laser hardening) are mentioned. Practical part is devoted to ball screw service life testing and evaluation of results. Tests were carried out on two sets of two ball screws. First set was manufactured by whirling and grinding followed by inductive hardening. Second set was manufactured by grinding followed by inductive hardening in one case and laser hardening in the second one. Test results were evaluated according to international standards.
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Measurement of roughness of the laser cutting edge
Drábek, Michal ; Šknouřilová, Eva (referee) ; Mrňa, Libor (advisor)
This bachelor thesis deals with laser cutting technology. The thesis is divided into theoretical and practical part. In the theoretical part is described the basic principle and function of the laser and the distribution of different types of lasers. Descriptions of each use of lasers in the engineering industry follow, more attention is mainly devoted to laser cutting. In the experimental part is presented a methodology to measure the roughness of the test samples which were cut from stainless steel X5CrNi18-10, the subsequent evaluation of the roughness parameters and comparison with the norm ČSN EN ISO 9013.
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