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Design of a robotic workplace
Jaša, Lukáš ; Řiháček, Jan (referee) ; Štroner, Marek (advisor)
The bachelor thesis is focused on the design of a robotic workplace. In the initial phase, the input requirements of the workplace are defined, according to which the final design must be processed. Furthermore, the text contains a recherche of the current state of robotization. The third chapter is generally composed of four variants of different workplace designs. In the first of these four variants, all components are described in detail, which are also included in the remaining three designs. This variation was chosen as the most suitable possible solution. The reasons why this workplace is considered to be the most ideal are also described in detail in the chapter. In general, the robotic workplace is designed for welding steel frames of power generators. All manipulation is ensured by a welding robot together with a positioner. The operation of the entire robotized complex is performed by only one operator. In the fourth chapter, in addition to the reasons for choosing the most suitable variant, all weld lengths on the frame are calculated together with the time of complete manipulation and welding time. It also shows the time for which the designed manipulator is able to make the final product in the form of a weldment. The time for which the frame was manufactured by hand welding is also given for interest. The given results show a clear increase in production productivity in the designed workplace.
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Welding with laser machines
Hanáková, Anna ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
This bachelor thesis is focused on the usage of laser beam and laser beam machines in engineering. It will be mainly focused on laser beam welding (LBW). History of laser, its development and principal are all described in the opening part of this bachelor theses. Types of lasers and its use are also included. Next part is focused on laser welding itself. Thus, welding methods, parameters entering the process and advantages/disadvantages of this technology are introduced. The last theoretical part includes material tests of welded joint and outputs of those tests. In the experimental part the process of laser welding itself is presented and the results of tensile test are described.
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Welding technology of turbine rotors
Pivoňka, Vít ; Kubíček, Jaroslav (referee) ; Daněk, Ladislav (advisor)
The paper deals with all the possibilities which can be used to weld the rotors of turbines, both the root and the filler welding. All these methods are thoroughly analyzed and their properties are described, especially the size of the heat input by welding of rotors of turbines. Further in this work is described the organization of the structure by means of a metallographic survey and a test of welds and materials, which are performed to check whether the material and the welding method are suitable for welding of rotors of turbines. In the experimental part are described all welds made by different welding parameters, one of these welds is chosen to achieve the best welding of the weld root. This weld is further investigated for hardness and change of microstructure after welding.
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Technology design of switchgear manufacturing
Žilák, Marek ; Dvořák, Milan (referee) ; Štroner, Marek (advisor)
This Master´s Thesis developed as a part of the follow-up Master´s Program studies in the field of M-STM Manufacturing Technology and Management in Industry introduces a technological proposal of switchgear manufacturing technology. Based on the research and assessment of the current status in the casing production, a technological process is proposed including technological and design documentation. The conclusion of this work is focused on the techno-economic evaluation of the selected production method and savings opportunities.
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Weldet constructions in technical documentacion
Bartošek, Daniel ; Brandejs, Jan (referee) ; Svoboda, Pavel (advisor)
The presented bachelor´s thesis deals with design documentation of welded con-structions. It provides an overview of weldment design types, basic usage principles and formal prerequisits. The thesis should serve for education of weldment design documentation, for which purpose the set of tasks included in the annex was also created.
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Welding of stainless steels in food industry
Staněk, Vít ; Hála, Michal (referee) ; Kubíček, Jaroslav (advisor)
The work, created in the bachelor degree, is engaged in welding technology food containers, namely CTK. There are some technologies with their advantages, disadvantages and specifications for welding stainless steels. The selected CTK is given manufacturing process, in the experiment were created welds, which are evaluated and WPS.
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Inspection of welded joints of loading ramps
Ertl, Roman ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
This master's thesis is focused on problem of welding of loading ramps and inspection of their welded joints. The aim of this thesis is to inspect the welds of loading ramps with regarding to the appearance of defects. The literature review of the research issues of the MIG welding technology and welding of aluminium and its alloys is described in this thesis. There is also described destructive and non-destructive inspection of welds that can be applied to inspection of loading ramps. Theoretical description is followed by an experimental part of the thesis. Experimental part is focused on the three destructive tests (the tensile, the macroscopic and the hardness test) of samples of loading ramps, which are made of EN AW-6005A T6.
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Welding of high strenght steel by laser
Číp, Tomáš ; Kubíček, Jaroslav (referee) ; Mrňa, Libor (advisor)
This project, elaborated within the engineering studies (code of field of study: N2301), presents experiment of welding of high-strength steel by laser. In this project, the samples of high-strength steel DOMEX 420MC will be welded by laser welding method and the welded joints will then be compared with welds made by MAG method. The theoretical part of this project summarizes the following key words in individual chapters: lasers, technology of welding of steel using laser, welding by MAG method, steel with higher strength, types of defects and check of welded joints. The practical part contains description of and assessment of mechanical tests of welded joints – weld bending test and transverse tension test. Further on, the tests of macrostructure and microstructure of welded joints were conducted and assessed. Final results of whole experiment are reviewed at the end of my diploma thesis.
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Laser welding of steels in automotiv industry
Paleta, Petr ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
In the automotive industry is beginning to replace the resistance spot welding by laser welding. The bachelor thesis was an analysis of laser welding methods, especially the method of remote welding, which is used for the experiment. Furthermore, the use of laser welding was described. We have also suggested the general technological process of welding. The experimental part was carried by metalografic cut of welded sample, which was evaluated by its macrostructure and microstructure.
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Rotary manipulator for manual welding of hoist drums for EXYZ storage machine
Pečenka, Tomáš ; Komenda, Adam (referee) ; Škopán, Miroslav (advisor)
The main aim of this diploma thesis is to design rotary manipulator for manual welding of hoist drums for EXYZ storage machine. The rotary manipulator is designed for improving of the quality of welds, which have been made in the static bearing welding process of hoist drum. The first part is concerned on the critical research of welding manipulators, which could be founded on the market. In the next part, there are sketched possible construction designs of welding manipulator based on the market offer. The main part of the diploma thesis is own construction design, which is made on the base of suggested concept of construction design.
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