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The racionalization of machining of gearboxes
Sádlo, Dominik ; Růžička, Petr (referee) ; Sliwková, Petra (advisor)
Content of the thesis is the proposal of new technology using machining centres, including five controlled axis. Benefit of implementation the new nechnology is investigated at machining example, which is the gear housing of a single stage gearbox, manufactured in the company. In the first part of the thesis, the general properties of gearboxes and their housings are analyzed, as well as the procedure of the current proces of the machining representative. In practical part of the thesis is proposed necessary tool equipment and jig equipment, needed for machining of the part. After that are analyzed and filled in time studies, provided by manufacturers of machining centres. On the bases of these studies, were calculated operating times and operating costs per one piece of the housing. In the part of technical and economical evaluation is calculated the return of initial investment, including costs for byuing new machining cente and cutting tools equipment. Finaly are evaluated the overal benefits of the new technology, given the needs of the company.
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Sanitation installation and gas installation in a apartment building
Růžička, Pavel ; Vaščáková, Alena (referee) ; Vrána, Jakub (advisor)
The aim of the Bachelor thesis is a design of sanitary installations and gas installations in the apartment building. It is a four-floor apartment building without a cellar. The apartments are located on all overground floors. The theoretical part is focused on infiltration of rainwater. The computation part and project includes a design of sanitary and storm sewers, water supply network, gas main a and their connection to existing utility lines.
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Sanitation installation and gas installation in the aparthotel
Růžička, Pavel ; Wierzbická, Helena (referee) ; Vrána, Jakub (advisor)
The master thesis focuses on the design of sanitary and gas installations in the particular aparthotel building in Pec pod Sněžkou. It is an aparthotel with two underground and max six above-ground floors incl. a gallery. The upper floors of the towers are used for accommodation. A parking lot and wellness area are situated on the first underground floor. On the second underground floor there is a technical background of the building, shops and a small restaurant for guests. All the roofs and terraces of the aparthotel are made to be green. The calculation part and the project contain the design of the sewerage, water supply, gas pipeline and their connection to the existing engineering networks. The theoretical part deals with increasing the pressure in the indoor plumbing, incl. design of equipment for increasing the pressure in the particular building.
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Adaptive parameterization for Aerodynamic Shape Optimization in Aeronautical Applications
Hradil, Jiří ; Rudolf, Pavel (referee) ; Růžička, Pavel (referee) ; Píštěk, Antonín (advisor)
Cílem mé disertační práce je analyzovat a vyvinout parametrizační metodu pro 2D a 3D tvarové optimalizace v kontextu průmyslového aerodynamického návrhu letounu založeném na CFD simulacích. Aerodynamická tvarová optimalizace je efektivní nástroj, který si klade za cíl snížení nákladů na návrh letounů. Nástroj založený na automatickém hledání optimálního tvaru. Klíčovou částí úspěšného optimalizačního procesu je použití vhodné parametrizační metody, metody schopné garantovat možnost dosažení optimálního tvaru. Parametrizační metody obecně používané v oblasti aerodynamické tvarové optimalizace momentálně nejsou připravený na komplikované průmyslové aplikace vyskytující se u moderních dopravních letounů, které mají šípová zalomená křídla s winglety a motorovými gondolami, přechodové prvky spojující např. trup s křídlem atd.. Existuje tedy potřeba nalezení obecné parametrizační metody, která bude aplikovatelná na širokou škálu různých geometrických tvarů. Free-Form Deformation (FFD[1]) parametrizace může, vzhledem ke svým schopnostem při zacházení s geometrií, být odpovědí na tuto potřebu. Adaptivní parametrizace by se měla být schopna automaticky přizpůsobit danému tvaru tak, aby byly její kontrolní body vhodně rozmístěny. Což umožní dostatečnou kontrolu deformací objektu, která zaručí možnost vytvoření optimálního tvaru objektu a splnění geometrických omezení. Primární aplikací takové parametrizační metody je deformace tvaru objektu. Dalším navrhovaným cílem je modifikace FFD parametrizační metody pro současné deformace tvaru objektu a CFD výpočetní sítě, umožnující velké deformace objektu při zachování kvality výpočetní sítě.
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Production of check valve's part
Růžička, Pavel ; Řiháček, Jan (referee) ; Císařová, Michaela (advisor)
The bachelor's thesis deals with the production innovation of the return valve disc component used in pumping technology. It is a component made of sheet metal with 3 mm thickness, the quality of material is according to ČSN 11 320. Existing production using cutting technology in a process tool will be replaced by a modern, more accurate and especially more economical method by precise cutting with a pressure edge. Based on the literature study of precision cutting, assessment of production technology and processing of design solutions, the cutting tool was designed to be able to significantly speed up and reduce the cost of production of the component. It will be placed in a three-acting press from Feintool, namely XTF Speed with a nominal force of 1500 kN. In the final technical and economic evaluation, it was proved that the newly designed technology is able to bring a component of the same nature to the market, but at a significantly lower price.
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The Evaluation of an Investment Plan
Široká, Pavlína ; Růžička, Petr (referee) ; Pernica, Martin (advisor)
The intention of this diploma work is based on an assessment of the present state of the company Industrial Engineering Ltd. to economically evaluate the effectiveness of planned investment. The last state of the company is evaluated by using financial analysis. For evaluating of the effectiveness are used static and dynamic methods. The conclusion of the diploma work evaluates investments and recommendations based on these facts and after assessing the risks of investments.
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Study of Process Control in Selected Products
Růžička, Pavel ; Bednář, Josef (referee) ; Jurová, Marie (advisor)
The thesis focuses on the process of production of castings in the company ŽĎAS, a.s. and its methods for implementing customer's requirements. The goal was to create a Work Flow diagram of technical preparation of production based on the company's internal directives. The next step was to compare it with the actual situation represented by a case job and to make a conclusion. The customer's requirements for the case production order included increased level of control and purchasing weld-on parts. The incorporation process for these requirements was not described by the original Work Flow and was the subject of its new revision. For its better practical application the Study contains business and organizational structures of ŽĎAS, a.s.
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Survey and Diagnostics of Building Construction
Růžička, Petr ; Láník, Jaromír (referee) ; Anton, Ondřej (advisor)
This master's thesis deals with the preparation, execution, and evaluation of a structural and technical survey of the former football stadium za Lužánkami in Brno. The theoretical part focuses on diagnostic methods relevant to the survey of reinforced concrete constructions. The practical part describes suggestions for the survey, and the execution of each of its parts, followed by a structural evaluation of the chosen component. At the end, an evaluation of the state of the building is carried out based on the results of the survey and calculations.
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Current trends of reduction NOx in the context with the prepared legislation
Růžička, Pavel ; Brummer, Vladimír (referee) ; Jecha, David (advisor)
This bachelor's thesis deals with processes of generating and methods of abating nitrogen oxides contained in flue gases in the context of Czech and European legistation. It compares the new enviromental act with its predecessor and scetches the pull of the new emission limits on stationary sources of air pollution. With particular focus on NO and NO2, the summary of NOx compounds hands a brief review of every individual one, which amongst other matters includes their impact on public and enviromental health. In the next part the paper aims at primary and secondary measures of NOx reduction together with factors influencing their utilization. Last chapter inquires into methods of selective catalytic and non-catalytic reduction and means of thier engagement in industry.
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