|
|
Construction of rolling machine of steel sections
Křivohlávek, Pavel ; Pavlík, Jan (referee) ; Matějka, Petr (advisor)
The aim of this thesis is to design steel beams bending machine. In the introduction, is characterized by a bending machine and carried out research costs, including factory-produced manufacturers. Followed by a proposal of alternative solutions, evaluating them and selecting the most appropriate conception. The next section is described in detail the proposed model, including stress analysis of loaded parts. The thesis also examined the safety of a forming machine, prepared an analysis of possible defects and their consequences in the design. Finally, it created the design documentation on the proposed machine made pricing and maintenance described rolling machine.
|
|
|
History of Iron and steelworks Třinecké Železárny
Niemczyk, Roman ; Němec, Karel (referee) ; Věchet, Stanislav (advisor)
The bachelor´s thesis is a technical summary and it is describing the history of Třinecké železárny since its creation in the 1850s to the present. The history of iron processing is briefly described. Furthermore, the thesis focuses to manufacturing process of Třinecké železárny and also to iron and steel production technology. At the last part are decribed typical products of Třinecké železány and future prospects of ironworks.
|
|
|
Study of bearing noise regarding accuracy of machining
Studýnka, Pavel ; Sabo, Karol (referee) ; Klapka, Milan (advisor)
This bachalor thesis deals with connection between the quality of surface of raceways of a bearing and vibrations in operation. This thesis describes basic geometrical parameters of a bearing that have main influence on its resulting quality and vibrations. It presents methods to evaluate the quality of the raceways surfaces and their connection between them. As a part of the thesis is an experiment, which should prove, what is the connection between the measuring of quality of the surface of raceways and measuring the vibrations of bearings during the process, by the way used in the company KOYO Olomouc. The quality of raceways is evaluated on a measuring device MUK-F 300 and vibrations on IL 100R/2000.
|
|
| |
|
|
Strip rolling
Kornherr, Milan ; Suchánek, Miroslav (referee) ; Petruška, Jindřich (advisor)
This bachelor thesis focuses on theoretical analysis of the role of plastic deformation in the process of rolling strips. The work explains progress of stress waveform during straining and lightening. This work also focuses on computing of spring loading and bending moment due to specific curvature of strips. Report at the end of this work includes an illustrative example with executional program.
|
|
|
Mechanical analysis of the subsystem of the tower crane
Urbánek, Roman ; Venský, Jiří (referee) ; Fuis, Vladimír (advisor)
The bachelor thesis deals with the solution of a subsystem of a tower crane with a passive effect (NNTP). First part describes tower cranes and their parts. The following part is a description of the theoretical and physical laws of statics and dynamics. In the practical part, various states of motion of a specific modeled subsystem are calculated, which shows a trolley of the tower crane. The aim of the calculation of each configuration is to determine the numerical values of the contact forces in the links, to analyze the dynamic quantities and to evaluate the functionality of the links. Numerical values of unknown parameters were calculated by solving a system of linear equations in the calculation software Matlab.
|
|
|
Production of towing hook
Frýdl, Pavel ; Štroner, Marek (referee) ; Lidmila, Zdeněk (advisor)
Requirements for the creation of a new technological process of manufacturing of towing hooks were cost savings by optimizing the initial blank and by creating semi automatic workplace. Selecting longitudinal rolling technology for manufacturing preform piece occurs to shorten production times and substantial material savings. By rolling of blank are secured always the exact dimensions of the preform piece and through a chain conveyors is facilitated handling with material for workers and reduced production time of forging line. By introduction of the proposed manufacturing method of towing hooks depending on the size of the series 30000 hooks per year will be achieved annually savings of over 4.000.000 CZK. Return of investments for the acquisition and adjustment of forging rolls and conveyors is 2,2 years.
|
|
|
Design of rolling mill for flexible single chamber tubes
Maštera, Lukáš ; Tůma, Jiří (referee) ; Blecha, Radim (advisor)
The Project is a masterpiece of Bachelor degree undergraduate of the Mechanical Engeneering at University of Technology in Brno and in general points out the basic problems associated with constructional plan of the forming machine for flexible pipe production. The Project contains the preview of production of the pipes and problems with designing the machine mainly the forming wheels draft
|
|
|
Production of sleeper screw
Bartošek, Filip ; Štroner, Marek (referee) ; Lidmila, Zdeněk (advisor)
Bachelor thesis developed in the bachelor degrees addresses technological process of the production sleeper screw. The production uses technology volume thermoforming. The project was elaborated in cooperation with the company ŠROUBÁRNA KYJOV s.r.o. The screw will be made from material ČSN 11 503. This material is unalloyed construction steel with property of weld. Based on the literature study technology volume thermoforming was chosen tamping in closed instrument for the production of head screw. For the production of screw-thread was chosen technology of rolling. For the production head of screw was chosen horizontal fitting press machine. After the production there were used surfacing by galvanic zinc coating because of the better corrosion resistance.
|
|
|
Production of seamless rings by technology radial-axial rolling
Zapletalová, Martina ; Lidmila, Zdeněk (referee) ; Podaný, Kamil (advisor)
The thesis is focused on the production of a seamless ring manufactured from low-alloyed steel 15 142, which fills the function as a large-dimensional bearing. On the basis of suitable production technologies analysis, the radial axial rolling method was chosen and a specific manufacturing process was proposed. During the manufacturing time, the creation of the forging defects in the transfers forms were occurred, which was totally undesirable. By changing the parameters of the machine, in particular the rolling curve and the temperature, the process was optimized and the production performed completely without defects.
|
guest ::
