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The Tools and Equipment for a Bending of Tubes
Kašpárek, Jan ; Štroner, Marek (referee) ; Peterková, Eva (advisor)
The bachelor thesis is aimed to make a general overview of used tools and equipment for a bending of tubes. On the basis of literary evidence the list of basic methods used in bending tubes was created. By conducting a survey in bending tubes producers manufacturing programs, various principles of bending tubes were described, which are supplemented with picture documentation. To each method there were mentioned some of the OEMs. Accompanying pictures describe the construction of individual machines and used tools and equipment.
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Investigation and bending limits definition for tubular stabilizer bars
Poljak, Peter ; Forejt, Milan (referee) ; Peterková, Eva (advisor)
Submitted master’s thesis deals with rotary draw bending of tubes as a subprocess of automobile’s stabilizer bar production. The main goal of the thesis is to clarify the influence of the process parameters of the bend on the resulting shape and properties of the product. Submitted thesis includes theoretical description of the chosen tube bending technology, description of defects and possibilities of their removal. The description of the bending machine used for stabilizer bars production is done afterwards. Practical part of the thesis includes experiments clarifying influence of parameters on the resulting shape of the stabilizer bar.
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Conditions of failures generation when bending profiled tubes
Fišar, Luboš ; Peterková, Eva (referee) ; Samek, Radko (advisor)
The thesis describes the knowledge from a round tube bending technology, as a description of conventional and unconventional devices. There are technological parameters in relation to the creation of defects, and equations for determining the bending moment. These knowledge has been generalized and applied to solution the changes of cross-section shape and thickness in the bending of square cross-section. The solution was implemented to specific component (20x2 mm steel tube with two successive radii R57,2 and R131,5). The results of experiments shows that the material is almost rigid-perfectly plastic, in the most stressed areas has a sufficient supply of material formability. Thickness measurement was applied to calculate the approximate center of gravity changes. This shows a shift of 1.4 mm, which is negligible value for the pure bending. The end of the thesis summarizes the deficiencies of current manufacturing technology, which used mandrel is inadequate, wrong located and poor lubrication.
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Project technology of production hooped components and structural design tools
Zachoval, Jan ; Samek, Radko (referee) ; Žák, Ladislav (advisor)
This diploma thesis has been elaborated within the Master's study of department 2307 that submits a production hooped component. The material of the component is steel ČSN 15 130. Single – part as far as small–lot production. On the basis of the literary study problems bend tubing was sugested the method: rotary draw bending. For this method was sugested mechanical bending machine with mandrel support arm, for bending with mandrel and exact bends in three – dimensional.
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Prevention of defects during tube bending
Procházka, Libor ; Štroner, Marek (referee) ; Peterková, Eva (advisor)
The bachelor thesis describes the most occurring defects of tube´s component bending. The first part of this thesis is focused on a detailed research of these unwanted phenomenons. The second part contains complete list of possibilities in the defects reduction. There are quoted the suitability and the terms of use for an individual eliminative methods in the second part of this thesis, too. The last part of this bachelor thesis contains classifying of elimination possibilities to the particular types of defects.
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Methods of 3D bending
Kráčmar, Lukáš ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
The project is developed in the context of a bachelor's degree in Mechanical Engineering and deals with an overview of modern methods of 3D bending part. The paper presents the different methods of 3D bending components that are produced by these methods and machines on which these components produce.
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Forming of thin-walled tubes
Baránek, Tomáš ; Peterková, Eva (referee) ; Podaný, Kamil (advisor)
This work brings a synopsis of technologies used in the process of thin-walled tubes forming as well as their evaluation. There are various forming methods applied in order to achieve a required shape e.g. tube bending, radial tube tripping and tube forming. The bending is done by several means e.g. collaring, reeling and pressing. In the pipe bending operation the tube may get deformed. Thus there might occur the following bending defects e.g. wall thinning, excessive flattening, wrinkles in the bend, tube suspension. At the radial tube tripping may occur local tube tapering or tube diameter attenuation. Tube forming is dividend into inlet, outlet and flattening.
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