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Surface casting defects
Rašek, Ondřej ; Pernica, Vítězslav (referee) ; Tomek, Ladislav (advisor)
Surface defects in casting include after decades of research on current problems of metal cast. They mean significant losses for foundries. Thesis includes a review of kinds of defects, their origins and their examinations, the effects on the mechanical properties and their machinability.
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Manipulator for folding molds
Borýsek, Lukáš ; Tůma, Zdeněk (referee) ; Pavlík, Jan (advisor)
The diploma thesis deals with the design of manipulator construction for folding two-part molds. In the thesis, an analysis of the current state of knowledge in the field of handling equipment and industrial robots is generally performed. Subsequently, the work introduces the current issue of handling equipment that is used in foundry. Furthermore, the work deals with the analysis of the manipulator construction, choosing the appropriate solution for the construction of its own handling equipment. Design solution is supported by computational message, 3D model and drawing documentation of selected nodes. The conclusion is devoted to the evaluation of work and practical recommendations.
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Pendulum jaw crusher
Pitner, Jakub ; Jurásek, Jiří (referee) ; Malášek, Jiří (advisor)
This master thesis deals with structural design of pendulum for single toggle jaw crusher DC 110x70 and consists of several main parts. The first part focuses on the processing of mineral materials, especially on the process of mechanical uncoupling. The second part compares main characteristics of single toggle and double toggle jaw crushers. The third part deals with the structural nodes for the crusher DC 110x70. Another part is consisted of two variants for the pendulum construction with a comparison of the advantages and disadvantages. For the selected variant is carried out the stress control using Finite element method (FEM) in the program I-DEAS. The last part focuses on the positioning an exit slit for designed pendulum.
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Manufacturing possibilities of wire holder
Šuráň, Jiří ; Císařová, Michaela (referee) ; Podaný, Kamil (advisor)
The project solved in the framework od Bachelors studies presents a proposal of the manifacturing possibilities of wire holder – piece of steel sheet 12 020.20. Holder is product of Spálovský company. The estimated series production is 1 000 000 pieces a year. At the base of literatural studies of technology of forming and technology of founding was selected and described 5 manufacturing possibilities of wire holder. Every posibility was evaluated in consideration of series production of the holder. For 2 the best possibilities was worked up the procedure list of manufacturing.
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Pendulum jaw crusher 1 600 x 1 250
Ješuta, Jiří ; Malach, František (referee) ; Malášek, Jiří (advisor)
This thesis deals with the design of the construction of a pendulum of a single toggle jaw crusher. The first part of this thesis treats the mechanical raw minerals disintegration. In the second part the characteristics of a single toggle jaw crusher and double toggle jaw crusher are compared. The third part addresses the calculation and the construction of the main components of the jaw crusher. Next part of the thesis consists of the calculation of the crushing force, the pendulum design, and the method of manufacturing a pendulum. The strength analysis of the designed pendulum using the finite element method (FEM) in program NX-Ideas is made in the last part of this thesis.
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Production of turbine wheel with investment casting
Fendrich, Tomáš ; Ostratický, Marek (referee) ; Myška, Martin (advisor)
TThis bachelor thesis is devoted to the production of turbine wheels by the method investment casting. It mensions the basic principles of investment casting, description of production of molds for wax models, choice of wax blends, materials used in the manufacturing of shells and description of the most used materials for casting of the turbine wheel itself. Also a short overwiev of vacuum casting technologies is presented. In the end of the thesis turbine wheel is casted from material A 890 Gr4A.
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Present state of investment casting technology
Soukupová, Lucie ; Šmíd, Dušan (referee) ; Horáček, Milan (advisor)
The Bachelor’s thesis deals with the latest trends in investment casting technology, from wax pattern manufacture, ceramic shell manufacture, de-waxing, shell heat treatment up to metal pouring and finishing operation. In the first part, the outline of the world production and the usage of investment castings nowadays are introduced. The other parts of the project include the basic technique of using new technologies. The aim of this work is developing a literature search focused on the most modern equipment and raw materials that are used in investment casting technology and testing of wax mixtures and ceramic slurries.
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Manufacturing possibilities of sparking plug body
Strnad, Miroslav ; Kopřiva, Miloslav (referee) ; Podaný, Kamil (advisor)
Difficulties of manufacturing sparking plug body are analyzed in this thesis, which aims to select the most appropriate option. Body is circular section of steel 1.1191 (12 050), with a hole in the middle and upper part of this body is ended with hexagonal shape. The series is estimated at 1 000 000 units per year. For the production of sparking plug body are selected options from the machining and forming technologies. Specifically, turning and milling, casting, forging, a method using superplastic material and cold extrusion. Selected technologies will be reviewed based on cost to produce one piece, time requirements of manufacture of the unit, material usability and overall feasibility. According to these parameters forming is chosen as the best option.
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Dropping Production in the Company
Eibelová, Lucie ; Šiška, Přemysl (referee) ; Juřica, Pavel (advisor)
The bachelor thesis focuses on the reduction of administrative and error rate in manual removal of the production in the foundry. The analysis maps the current state of the processes in the operation and shows how it works. This thesis presents a proposal to solve the problem by introducing the MES system, which is installed in the foundry.
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