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Utilization of Liquid in Forming Processes
Horňák, Matúš ; Podaný, Kamil (referee) ; Řiháček, Jan (advisor)
This diploma paper submits a literature retrieval of forming processes, which use liquid as a main or additional forming medium. These methods are used in practise in mass-produced complex components, mainly in automobile and aeronautic industry. They are perspective due to their variability, geometric accuracy and the ability to form components which cannot be made using conventional methods. The thesis introduces principles, submits specimen of units prepared by methods, such as hydro-mechanical pulling, Flexform or processual hydroforming, and evaluates their advantages and disadvantages.
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Production of support by forming
Caha, Tomáš ; Štroner, Marek (referee) ; Kopřiva, Miloslav (advisor)
This project developed within the bachelor degree in B-STG present proposal forging technology - parts from bar of circular cross-section of cold rolled 14 220. Based on the literature study problems of die forging and calculation was designed die forging with bottom ejector, designed for easy removal of the forging from die cavity. Die is circular cross section and is clamped with a dovetail groove in vertical forging press LZK 1600 (manufacturer ŠMERAL Brno), with a nominal forging force of 16MN. The lower and upper half of the die is made of steel 19 662, heat threated for the purposes forging.
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Wire Drawing Technology
Štys, Michal ; Císařová, Michaela (referee) ; Řiháček, Jan (advisor)
The paper presents current research on the technology of wire drawing with focusing on the analysis of process factors, their calculation and influence on the process itself. The research describes drawing methods and technological process of wire drawing. The work also deals with geometry and die materials and their effects on process quality and tool wear. Subsequently this thesis analyses currently used machines and their advantages and disadvantages. As well as their suitability for use depending on the materials of the drawn wires and economic profitability. At the end of the thesis, unconventional methods of wire drawing and their future development estimation are presented.
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Heat treatment of formed parts
Poloch, Milan ; Peterková, Eva (referee) ; Lidmila, Zdeněk (advisor)
Bachelor thesis focusing on heat treatment of formed parts. The chapter of basic termsdeals with steels for forming. Concrete formability and influence on plastic deformationson steel properties, influence of chemical composition, structural composition and termomechanical conditions during deformation. In the larger parts of the thesis are carriedout heat treatment. The prohibited concepts of heat treatment are explained in the in-troductory question and some follow the basic methods and then the basic methods ofheat treatment such as annealing and tempering with tempering are explained. All ofthese technologies have their own subchapters and are illustrated and supplemented withgraphs and figures. The practical amount consists of plastic deformations of roller-shaped samples. The samples were deformed, measured hardness, heat treatment followed bymeasured hardness. Changes of mechanical properties on samples are evaluated.
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Production of filter cover
Bachurek, David ; Forejt, Milan (referee) ; Podaný, Kamil (advisor)
The project elaborated design of technology production of the filter cover - section from the deep drawing sheet 11 325 (DC04). Based on analysis was chosen combination of technologies shearing and deep drawing for that option was designed manufacturing process. Forming process is realized on hydraulic progressive press from Sweden company AP&T which has got total nominal tensile force 1740 kN and equipped 5 stations with lower holders and upper ejectors. Deep drawn part is transported between stations by feeders which are part of press. Function parts are made from alloyed tool steels 19 436 and 19 573 which are heat-worked according to drawing documentation. In chapter technical and economical evaluation was determined turning point which become after reaching of 142 840 parts.
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The problems of production of railway wheels
Šimčík, Vladimír ; Kubík, Roman (referee) ; Kalivoda, Milan (advisor)
The main idea of this work is especially to make clear the principle of railway wheelset technology, consisting of wheels, axle and other necessary components. Based on available information sources, BONATRANS GROUP a.s. literature, practical advices, experience and knowledge of practical issues, the problems in the manufacture of railway wheelsets and proposals for their elimination will be named.
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Manufacturing of sheet parts by drawing technology
Konvičný, Denis ; Císařová, Michaela (referee) ; Štroner, Marek (advisor)
Drawing techniques are extensively used in the engineering practice so that there is minimal waste of material and, therefore, its use is highly economical. They are used in the serial, as well as mass production and the forming machines for these techniques have high output. This thesis is focused on the issues of the production of sheet metal components by the drawing technique. It describes individual types of the drawing techniques and the production of components of rotary shapes focusing on the acquiring of dimensions of a semi-finished product for cylindrical cups.
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Analysis of manufacturing of component by elastoforming technology
Lorenc, Tomáš ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
In this thesis, processed within the master's degree is the analysis and proposals for modification of production stagnation ribs aircraft L-410. The part is made of aluminum alloy D16. More specifically, it is a 0.8 mm thickness sheet, which after the milling of the blank molded in the basic non-rigid tool by Guerin. After analyzing the entire manufacturing process and the determination of the critical points due to a series of tests carried out were evaluated possible variants production innovation. Proposed changes and their optimization can reduce the labor intensity deleting some time being necessary preparatory and finishing operations manual. It also increases the repeatability and streamline current production panels.
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Straightening technology of semi-finished products
Sikora, Marek ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
The main aim of this thesis is to create a general overview of processes that are applied in straightening semi-finished products. These processes include manual methods as well as mechanical ones. This work also informs about advantages and disadvantages of these processes based on published researches. This paper is supposed to give a basic overview of categories of machines and tools that are used in certain straightening technologies.
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