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Control of the semi-automatic lathe model
Loskot, Petr ; Štohl, Radek (referee) ; Macho, Tomáš (advisor)
The work introduces the concept of conventional lathes. What the main parts are and what the demands on them are. It also brings us closer to the concept of modern CNC machine tools. It presents us with the possibiliteis of motion control in the axes using modern elements and the possibility of position measurement on the axes. In the practical part, the work presents us with some possibilities of components by which the semi-automatic lathe model can be realized.
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Design of multi-functional machining centre
Cvejn, Jiří ; Holub, Michal (referee) ; Blecha, Petr (advisor)
The purpose of this diploma thesis is a design of frame, crossbar, transverse feed, sliding feed of multifunctional machining center. In the first part, there is a brief research of history of machine tool conducted, division of machining centers, materials for frame construction, alternatives of drives of sliding axis. Further, I carry out an analysis of parameters of compeeting machine tools, from which I selected the parameters of our machine. Frame project of the machine, propulsion of axis X and Y, kinematic connection of axis X,Y,Z. Frame of machine is analysed by Finite Element Method. Over the scope of this work I suggest a solution for covering of linear axis as well as their measuring of actual position. 3D model of frame and drives of machine are included in this work. A complete formation has been introduced into the immersive virtual reality environment.
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Train transport
Netolický, Jan ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
This bachelor thesis deals with train transport. Train transport has been with us for many years and is constantly evolving. Many years have passed since the early days when rail vehicles were only used for transporting materials in mines, and today's rail vehicles serve as one of the main means of transport all over the world. The congestion of road transport is contributing to the use and development of train transport and thus to the increased speed and comfort that the carriers are trying to offer us. For this reason, the trains have been divided according to different criteria and the distance of their journey. Freight trains have also been included. Because of the constant increase in speed, more space has been given to high-speed trains, which have been divided into individual high-speed families. This overview of the trains gives us an indication of the direction of future development. As the Czech Republic has an extensive rail network, the paper includes an assessment of future developments in terms of speed increases, electrification and freight transport. As a result of the thesis, a breakdown and overview of current trainsets is presented, from which trends in this sector have been drawn. The thesis also concludes with a critical assessment of future developments in the Czech Republic.
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Design of linear axis for heavy machine tool
Horák, Miroslav ; Marek, Jiří (referee) ; Hermanský, Dominik (advisor)
This diploma thesis deals with the design of linear axis for heavy machine tool. The thesis describes the definition of heavy machine tool and its basic construction nodes. The next chapter describes the components of the linear feed assemblages, the basic principles of use and their advantages and disadvantages. On the basis of this research part there are selected variants of the solution and in the last part of the thesis there is a design of the axis X of the gantry machine tool. Part of the work is a 3D model of the proposed feed assemblages and part of the drawing documentation.
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Diesel railroad vehicles drive concepts
Polcer, Pavel ; Knotek, Jiří (referee) ; Zubík, Martin (advisor)
Thesis deals with diesel railroad vehicle drive concepts, in other words transmission of power from diesel engine to driven wheels. Currently used drives are described in terms of functionality, limitations and efficiency. Numerical model, which simulates rail vehicle journey, is used to compare efficiency of drives, or more accurately, energy needs for their operation. Based on the numerical model, suitable drives are recommended.
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Design of controlled drive for parallactic mounting
Šulc, Dalibor ; Grepl, Robert (referee) ; Krejsa, Jiří (advisor)
The aim of this bachelor’s thesis is exploration of facts about drives for parallactic mounting and its design with microprocessor control. In the thesis there is also described the tandem governor and the nonlinear position computing method. One part of this thesis is the complete scheme of mounting electronics, computing and measuring differences between real and theoretic position. The last part of the thesis focuses on the specification of other possible problems, which can bring inaccuracy into taking pictures.
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Train transport
Netolický, Jan ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
This bachelor thesis deals with train transport. Train transport has been with us for many years and is constantly evolving. Many years have passed since the early days when rail vehicles were only used for transporting materials in mines, and today's rail vehicles serve as one of the main means of transport all over the world. The congestion of road transport is contributing to the use and development of train transport and thus to the increased speed and comfort that the carriers are trying to offer us. For this reason, the trains have been divided according to different criteria and the distance of their journey. Freight trains have also been included. Because of the constant increase in speed, more space has been given to high-speed trains, which have been divided into individual high-speed families. This overview of the trains gives us an indication of the direction of future development. As the Czech Republic has an extensive rail network, the paper includes an assessment of future developments in terms of speed increases, electrification and freight transport. As a result of the thesis, a breakdown and overview of current trainsets is presented, from which trends in this sector have been drawn. The thesis also concludes with a critical assessment of future developments in the Czech Republic.
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Control of the semi-automatic lathe model
Loskot, Petr ; Štohl, Radek (referee) ; Macho, Tomáš (advisor)
The work introduces the concept of conventional lathes. What the main parts are and what the demands on them are. It also brings us closer to the concept of modern CNC machine tools. It presents us with the possibiliteis of motion control in the axes using modern elements and the possibility of position measurement on the axes. In the practical part, the work presents us with some possibilities of components by which the semi-automatic lathe model can be realized.
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Design of linear axis for heavy machine tool
Horák, Miroslav ; Marek, Jiří (referee) ; Hermanský, Dominik (advisor)
This diploma thesis deals with the design of linear axis for heavy machine tool. The thesis describes the definition of heavy machine tool and its basic construction nodes. The next chapter describes the components of the linear feed assemblages, the basic principles of use and their advantages and disadvantages. On the basis of this research part there are selected variants of the solution and in the last part of the thesis there is a design of the axis X of the gantry machine tool. Part of the work is a 3D model of the proposed feed assemblages and part of the drawing documentation.
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