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Finishing machining of hard-to-machine materials
Filípek, Timotej ; Varhaník, Matúš (referee) ; Píška, Miroslav (advisor)
The Master‘s thesis focuses on processing of hard-to-machine materials by the finishing machining methods. The first chapter comprises division and characteristics of finishing technologies in the field of machining processes. The chapter following includes division and characteristics of the hard-to-machine materials. The experimental part – another significant part of the thesis – is focused on grinding of mostly bearing rings made of hard-to-machine materials. The aim of the experimental part is to compare and subsequently assess the use of various kinds of grinding wheels in the grinding process of a given workpiece material. Several parameters are examined from the technological and economic point of view. The assessment of the experimental part provides an overview on the advantages and disadvantages of the use of the grinding wheels in the grinding process of a given material for large-scale production. The conclusion is a summary of the results obtained in the experimental part.
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Proposal or the new layout of the "toolshop"
Varhaník, Matúš ; Zahradníček, Radim (referee) ; Strejček, Jan (advisor)
The aim of this work was creating the draft of stamping tool workshop layout. Our first task was to define the product range. Afterwards we were able to identify the technological and machinery equipment necessary for the execution of orders. The paper further discusses the need of human resources as well as the needs of the production, administrative and social areas. We propose possible technological solutions considering the range of production, the amount of machinery and personnel capacities. The next step is to optimize the layout, using tools such as material flow and continuity of operations. Not only safety at work but also the ergonomics of the proposed workplace is important for the final draft. The result of our project is to develop the final layout of stamping tool workshop containing the economic evaluation of the investment plan.
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Manufacture of gastronomic equipment of stainless steel
Macková, Ivana ; Varhaník, Matúš (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis seals with corrosion, stainless steels and surface treatments of steels, which prevent corrosive disruption of the material. Furthermore, the work deals with the design of the production of non-rotating component with a flange made of austenitic stainless steel X5CrNi 18-10. A blank is cut out on sheet shears. A blank is formed into the desire shape on a CYS 320 press by deep drawing technology, and later a flange is cut on LEXN 100 C press. The economic evaluation of production is set at a model situation of 100 000 pcs/year.
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Production of screw connections for extreme conditions
Kukliš, Richard ; Varhaník, Matúš (referee) ; Kalivoda, Milan (advisor)
Screw/threads connections are often the chosen alternative for connecting two different components. If we want to use them even under extreme conditions, we have to choose the optimal production process, which is closely related to the choice of material and construction of the component. This research initially deals with the production of screw connections and their structural significance, at the same time it provides an overview of materials suitable for extreme conditions and then presents the production processes of thread production.
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Variant production technology of a fan impeller
Macháček, Marek ; Varhaník, Matúš (referee) ; Zemčík, Oskar (advisor)
The thesis considers a change in the manufacturing technology of a fan impeller from welding to 3D printing. The wish of the manufacturer was to investigate if such a change is possible and financially profitable and decide on a further approach to manufacturing. Models were created using information from the manufacturer and using them, conditions for manufacturing the impeller in the 1:1 ratio were derived. Based on the new technological process and the experience from prints a new price calculation for the fan impeller using 3D printing was created.
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The effect of cutting conditions on surface integrity of austenitic steel
Husár, Ján ; Sliwková, Petra (referee) ; Varhaník, Matúš (advisor)
The aim of this work was theoretically to analyze the issue of machinability of austenitic steels and their use. The document also discusses factors that affect the cutting process itself, such as the cutting tool, machine tool, cutting environment and cutting conditions. In the next part of the bachelor´s thesis, an experimental test and its realization at which individual steel samples were turned is proposed. The last part of the thesis summarizes the result of the experiment and evaluates selected properties of the surface and subsurface layers the processed samples.
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Machining of a guide wheel from turbocharger
Hibš, Dominik ; Varhaník, Matúš (referee) ; Kalivoda, Milan (advisor)
The topic of the bachelor’s thesis is to develop a design for the production of a distribution wheel for a turbocharger. The design includes a description of the part, the choice of material, machines, tools, and the development of the production process. The outcome of this thesis is the creation of a NC program in the HEIDENHAIN system.
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Design of a shaft of single stage gearbox machining
Fiala, Dominik ; Trčka, Tomáš (referee) ; Varhaník, Matúš (advisor)
This bachelor thesis deals about design of machining single-stage gearbox shaft. The thesis consists of five main parts. The first part focuses on constructional-functioning characteristic of single-stage gearbox shaft. The second part focuses on shaft component analysis. The third part focuses on 3D model and component drawing. The fourth part focuses on preparation of TPV documentation and the last part is the evaluation of the design.
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Cutting materials based on diamond and their use in practice
Nonn, Vilém ; Varhaník, Matúš (referee) ; Trčka, Tomáš (advisor)
Cutting tools based on diamond belong to important cutting tools used in today's mechanical engineering. The unique properties of diamond enable it to machine effectively even difficult-to-machine materials. Currently it is possible to manufacture particular sort of diamond by adjusting the parameters of synthesis. To use diamond tools efficiently, it is necessary to choose a diamond with appropriate application characteristics.
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