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Possibilities of using modern methods in manufacturing of prototype castings
Šmíd, Jiří ; Horenský, Jiří (referee) ; Horáček, Milan (advisor)
The introduction part of the thesis focuses on the overview of rapid prototyping in foundry industry. Principles of the most important RP methods are described and the FDM method is analyzed in more detail. This method was used in the practical part for the production of wax patterns with silicone moulds. The wax patterns were used for the production of castings using the lost wax method. The result of this work is determination of dimensional changes during the whole process of casting manufacture from the drawing to the final casting.
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Dimensional accuracy of Al castings manufactured by lost wax process
Kučera, Tomáš ; Vašťák, Patrik (referee) ; Horáček, Milan (advisor)
The aim of my diploma thesis was to find the possibilities of reaching the dimensional tolerance in the individual phases of casting by the investment casting process. The accuracy of the selected wax patterns and castings were measured by a caliper. At first the selected dimensions of the wax models were measured right after taking them out of the mold and then they were measured during seven days. The castings were measured after pouring. The obtained figures were statistically evaluated. The results show that the large-scale and thick-wall wax model should be coated after seven days of stabilization because the dimensions of the wax model are not stable.
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RP technology using FDM method and investment casting technology
Kosour, Vojtěch ; Krutiš, Vladimír (referee) ; Horáček, Milan (advisor)
An overview of the development of the Investment Casting market and Rapid Prototyping equipment is given in the introductory part of this diploma thesis. Basic methods of rapid prototyping and the FDM method are futher described in detail. The FDM method is consequently used in the practical part of this work for the preparation of the silicon mould. The largest part deals with the issue of the simulation of pouring process of wax into the silicon mould. A characteristics of the casting wax is made; the parametres, which are inserted into the simulation software ProCAST and the possibilities of their measurement are described. The process of the simulation of the mould filling and its validation with the real filling process are described in detail.
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New ways in manufacturing and construction of mould for wax casting
Dostál, Pavel ; Sedlák, Josef (referee) ; Zouhar, Jan (advisor)
The aim of this work is to compare technology of silicon and aluminium moulds used to make castings using technology of cire perdue with single – piece work. The work itself deals with physical production of silicon mould in vacuum casting system, shaping aluminium mould using CNC machine and subsequent casting of wax models into these moulds. It also handles with physical production of one piece by shaping. It contains background research of the method lost wax casting manufacturing aluminium and silicon moulds and last but not least of Rapid Prototyping technology for producing master model.
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Manufacture of a prototype component by rapid prototyping method
Křupka, Marek ; Stachovec, Ivo (referee) ; Kosour, Vojtěch (advisor)
This thesis describes the production of a prototype component of the bicycle crank with FDM Rapid Prototyping method. Initially, production methods of this component, using different ways of Rapid Prototyping are summarized. The main part of the thesis focuses on the production process from the initial design to the final wax model, which can be used to manufacture metal components. The conclusion compares the component production using standard technology with the one using Rapid Prototyping.
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