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Machining threading holes with cutting operation, pressing and shaping.
Rybář, Pavel ; Sedlák, Josef (referee) ; Kalivoda, Milan (advisor)
This project wrought in terms of bachelor studies program 2307 submits a proposal of technology of production internal thread in thin-walled components. Selection of technology is done on the basis of three basic methods evaluation – welding nuts, riveting nuts and thermal shaping. On the basis of literary studies the optimal application is proposed. There is reduced choice of tools and assembly equipment used only for one type of technology. The choice of fastening parts material is possible done in conformity with product material, thread strength according to whole construction or design engineer choice. For proper choice of technology there are technical data sheets of fastening parts and description of thread mechanical properties.
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Design and Production of Clamps for Mandrels ISO 40
Tomešek, Viktor ; Kalivoda, Milan (referee) ; Sedlák, Josef (advisor)
Main aim of this bachelor’s thesis is to design and product clamp for mandrel ISO 40. This clamp will replace the other one, which is used in the milling workshop C2 on BUT Faculty of Mechanical Engineering. It will ensure easier and faster operator’s work during tool change. Also manufacturing process, selected material and cutting conditions are described in this thesis. Theory necessary for an understanding of the issues is stated in introductory section. In the final part, there is executed technical-economical evaluation with the overall costings associated with the production of the clamp for mandrel.
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Application of Metal Additive Technology in Production of a Blisk for Turbine Engine of a Auxiliary Power Unit
Robl, Jan ; Ňuksa, Petr (referee) ; Sedlák, Josef (advisor)
The thesis deals with the possible use of additive technology in the production of strong thermally exposed components of turbine engines. The first part of the thesis is dedicated to the issue of processing heat-resistant materials by SLM method, introduction of conventional production of selected part and outline of currently used progressive methods in precision casting technology. These theoretical findings are further applied in the practical part of the thesis, which deals with the analysis of mechanical properties of cast and printed material IN 939. Experimental part also includes production of the blisk of the first stage turbine of the auxiliary power unit S5L by SLM additive technology. The thesis also includes analysis of fracture surfaces and metallographic analysis of samples using light and scanning electron microscopy. The thesis ends with the evaluation of the achieved results.
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Application of Modern Technologies to Production of Prototype Form
Pospíšil, Josef ; Zemčík, Oskar (referee) ; Sedlák, Josef (advisor)
This Diploma Thesis deals with modern technologies such as 3D scanning, rapid prototyping and vacuum casting to production of prototype form. It considers advantages and disadvantages of the modern technologies compared to traditional process of manufacturing prototype form and economical contribution using the modern technologies. Part of the thesis considers a choice of suitable manufacturing technology of a particular product.
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Evaluation of dimensional and shape accuracy of components made of plastic
Tuza, Marek ; Dobrocký, David (referee) ; Sedlák, Josef (advisor)
The aim of this thesis is to evaluate the dimensional and shape accuracy of components made of plastic. A total of 10 samples, produced by two types of production, extrusion and 3D printing using the FFF method, were used for this purpose. The semi-finished products were milled after production, which resulted in samples of the required dimensions. The samples were milled on one side without cooling emulsion and on the other side with cooling emulsion, which significantly affected the resulting shape accuracy values. Thus, a total of 20 surfaces were evaluated. Two parameters were selected to evaluate the dimensions, namely distance and parallelism. When measuring the shapes, 11 parameters were evaluated using a 2D roughness profile and a 3D surface texture. One of the most used parameters that was evaluated when measuring shapes was the arithmetic mean deviation of the roughness profile, which is denoted as Ra. The research found that the highest accuracies were measured for the material PA produced by 3D printing and milled with a cooling emulsion. At the end of the practical part, the author also makes recommendations regarding the practical use of materials.
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Hard machining with defined geometry edge tools
Bukáček, Zdeněk ; Sedlák, Josef (referee) ; Prokop, Jaroslav (advisor)
This master’s thesis is concerned with subject matter hard machining with defined geometry edge tools. Aim master’s thesis is analysis and parameters evaluation machined surface at hard machining. This master’s thesis contain a characteristic of hard materials, used technology for cutting operation, but also tools and cutting conditions suitable for hard machining. In the conclusion are parameters evaluation machined surface the workpiece.
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Implementation of Total Effectiveness of Mechanism for Production Processes Improving
Koppová, Aneta ; Sliwková, Petra (referee) ; Sedlák, Josef (advisor)
The bachelor thesis is focused on monitoring production machines efficiency in the Siemens s. r. o., o. z. Elektromotory Mohelnice company via the Overall equipment effectiveness indicator. The aim of the work was to analyze the current state of machine monitoring, to evaluate existing solutions, and to propose further development options. The analysis of the current state contains a description of the data collection method used, an evaluation of the data, and a visualization of the results. The information served as a basis for determining a scheme according to which the company will focus on the most important machines and draw up an action plan in order to reduce downtime and, consequently, increase production productivity.
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Design of Assistant Brake for Mechanical Wheelchair
Vaněk, Roman ; Osička, Karel (referee) ; Sedlák, Josef (advisor)
The goal of this diploma thesis was the design of an assistance brake for a mechanical invalid wheelchair. The theoretical part includes the sorting of wheelchairs and available technology of braking systems. In the practical part, there was prepared the design and testing of the assistance brake. In the final chapter, the technical-economic evaluation of the designed solution was discussed and compared with the existing technologies.
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Production Concept of Injection Moulds for Plastics
Hrdlička, Martin ; Sliwková, Petra (referee) ; Sedlák, Josef (advisor)
The Bachelor's thesis, written during the study of B-STG Manufacturing Technology, is focused on the production concept of injection mould for plastic components. It includes a description of the technology of injection moulding and the function of the individual parts of the injection mould. Further it analyses the production concept that contains the production process steps and the operating instructions. The conclusion of the thesis is devoted to the technical and economic evaluation of the concept.
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