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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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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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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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Methodology of traditional working of construction timber for structural repairs of historical buildings
Kloiber, Michal ; Růžička, Petr ; Tippner, J. ; Kunecký, Jiří
The publication deals with a methodological description of traditional (manual) wood working for structural measures in repairs of historical buildings. The methodology includes the results of experimental testing performed during timber logging in various seasons (winter, spring, summer), results for different ways of working (cutting, splitting, hewing, and combination of hewing with floating), results of verifying the elimination of growth (residual) stresses in wood selection and working (selection of wood without natural defects and intentional interventions during working). The resulting methodology meets the protection standards of cultural heritage, in particular the requirement to minimize interference with the original material, while using the original working technology for newly incorporated elements including material selection. The methodology describes the prerequisites for use and the necessary marginal conditions, material selection, handling and storage of logs, woodworking technology (hewing, splitting, and cutting), but also storage of worked elements until the actual structural repair, while presenting the version of minimum interference with the original material using traditional (manual) working of timber on specific examples of structural elements.
Plný tet:  PDF
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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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Traditional working and quality of timber during repairs of timber structures
Kloiber, Michal ; Růžička, Petr
Extensive field experience with repairing timber structures shows two main limiting factors for the quality of work that are often circumvented or simplified. First, it is the quality of the timber for the repairs (replacements, additions) and the resulting problem when the recommended criteria for the selection of suitable material are not met, with regard to the long-term coexistence of the new timber with the original material. Second, a critical factor is the way in which the timber is worked - the preferred traditional working is for various reasons replaced by counterfeits. Due to the limited scope of this paper, we can only pay attention to the most blatant case, which is working of logs by hewing.
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