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Compensation of Linear Encoder of Maching Center
Štěpánek, Vojtěch ; Šooš, Ĺubomír (referee) ; Suchánek, Rostislav (referee) ; Marek, Jiří (advisor)
A CNC machine tool is a complex mechatronic system whose behaviour is influenced by a change in temperature gradient. Nowadays, we could state that under certain conditions it is a cyber-physical system. From this point of view, there are two approaches to solve this problem. One direction solves the whole machine using a suitable method as a whole. Models are often very complex and their reliability is often questi-onable. This work deals with the decomposition of the machine using a systems approach, with the intention of finding the dependencies between the geometric error of the on-axis position accuracy and the temperature gradient. Then, using a suitable virtual model, predict the evolution of the temperature error and based on this prediction, make actionable interventions in the machine tool control system to eliminate the on-axis homing error as much as possible. One of the basic building blocks of the machine tool in terms of positioning is the linear encoder, which acts as a direct feedback member of the axis position control. Therefore, this publication is mainly devoted to the thermal behaviour of the linear encoder.
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Mobile milling machining center
Kedajová, Kristýna ; Marek, Tomáš (referee) ; Marek, Jiří (advisor)
This diploma thesis focuses on the design of a mobile milling machining center with a horizontal spindle position. In contrast to currently manufactured mobile machines, which are often attached to the work piece, this proposal is directed towards creating a machine concept that can be operated in a conventional manner. The purchase of a machine tool is very expensive and represents a large investment, increasing mobility could allow it to be rented and reduce the need to tie up funds. In order to make this possible, a number of factors need to be considered, such as the design of the machine, the design of the transport packaging and the method of transport itself. These factors are considered in the thesis and design variants are created based on these factors. Then the final design is selected from these variants and drawings are created for it. The solution is supported by the necessary technical calculations.
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Engine Block with Integrated differential for Formula Student
Marek, Jiří ; Šebela, Kamil (referee) ; Janoušek, Michal (advisor)
The diploma thesis deals with the design of the integration of limited slip differential of the formula student car into the engine block. To select suitable solution from several considered, a research analysis of possible concepts was first made and then the best possible solution was determined using a decision table. A 3D model was then made for the selected concept based on the original engine block, digitalized by using a laser 3D scanner. The resulting model was then evaluated and built into Dragon X.
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Interchangeable three-axis tool head for CNC portal milling machines
Balek, Jan ; Pavlík, Jan (referee) ; Marek, Jiří (advisor)
This master’s thesis is focused on design of interchangeable three–axis tool head for CNC portal milling machines. The first part is devoted to a survey of the current state of technology and the representation of individual types of heads on the market. Furthermore, several possible variants of construction are proposed and the most optimal one is selected using multicriteria analysis. It is created a 3D model of selected variant, drawing documentation and technical calculations.
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The influence of automation of machining processes on the passage of the order through the company
Pavelka, David ; Marek, Tomáš (referee) ; Marek, Jiří (advisor)
The goal of this master's thesis is valorisation of automation influences, affecting machine processes, which has strong importance on the passage of the order through the company. Master's thesis is processed in cooperation with FERMAT CZ, s.r.o company, which is based in Based. Theoretical part is focused on detailed research of current state of science and technology and system analysis of solved problems. Practical part is focused on design proposal and evaluation of changes in the production of the mentioned company. All the details are based on calculations, tables and graphic illustrations in the text of the final thesis.
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Kindergarten FUTURUM
Csöbönyei, Thelma ; Marek, Jiří (referee) ; Šindlar, Jiljí (advisor) ; Brzoň, Roman (advisor)
The bachelor thesis follows up on a studio project created in the summer semester of the 3rd year of my bachelor´s study. The aim of the project was to design a new kindergarten in the Brno-střed district. The kindergarten has two departments, both with a capacity for 24 children. The plot is located in the northeast of Havlíčkova Street. The terrain is significantly sloping. The large slope on the side of Havlíčkova Street is overcome by a huge ramp, which will also serve as an educational trail and a pleasant arrival every day before kindergarten. Between the ramp and the kindergarten there is a garden for children to play. The slope on the other side of the plot is used for a smooth entrance to the first underground floor from the grammar school side. The kindergarten building has a square shape and one above-ground floor, where the kindergarten management and the main part of the operation are located. The building is single-story with partial basement. In the basement there are the technical facilities, facilities for food preparation and staff. On the northwest side of the building, two classes are symmetrically spread out with a shared cloakroom in the middle. The building´s façade has wooden cladding, which is cut around the openings so that they look playful by creating geometric shapes. The main intention was to create a pleasant environment for children, to which they will be happy to return every day.
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Kindergarten 21st century.
Bajerová, Anna-Marie ; Marek, Jiří (referee) ; Šindlar, Jiljí (advisor) ; Brzoň, Roman (advisor)
The basis of this bachelor thesis is an architectural study prepared in the subject AG034. The theme of the work is the design of a nursery school that will meet the requirements of the 21st century. The proposed building is located in the city district of Brno-Stránice. The lot is located on the outskirts of the Masaryk district, near the Square Míru. The site is part of the Cyrilomethodian Grammar School and this fact is taken into account. The terrain on the lot is sloped from west to east and the design uses the height difference of 7.1 metres to allow entry from three elevation levels. The main entrance is from the street in the west side of the property. The building can also be accessed through the campus itself, to which the nursery is affiliated. A new parking lot for parents and employees is proposed for the property, which includes 7 car stalls, including an immobile one. Around the house there are green areas, a playground with an artificial surface and a sports ground. The south side of the property consists of a stone wall, which is simultaneously a fence with a neighbouring property. The building has 2 upper floors and one underground level. The first above-ground floor contains the main operation of the nursery, the second above-ground floor acts as the main entrance and at the same time the facilities for the teachers and the underground floor is reserved for the operating part of the building such as TZB, warehouses and food preparation. The building is designed as a woodwork in combination with a masonry lower structure. The roof of the building above 1NP is designed as an operational vegetation roof. The second roof above 2NP is also a vegetation roof but without operation. I was inspired by dualism when I designed the building. The building is meant to be clean, functionalistic for passers-by, but for children it provides a reflection of their soul in the form of a "woozy" inner facade, which is also written into the interior itself.
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