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Design of C axe for large turning machine
Kulčar, Vojtěch ; Tůma, Jiří (referee) ; Blecha, Petr (advisor)
The subject of this thesis is construction of C axis of large turning machine. It contains description of C axis and methodology o its usage. Moreover it contains search of possible technical solutions of drive, breaking and measuring C axis. This thesis is describing chosen technical solution of drive and construction of c axis in design part. Also included is calculation and drawing of assembly of drive and model of C axis modeled in program Autodesk Inventor 2009.
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Construction of equipment for deburring gears
Bosák, Daniel ; Tůma, Jiří (referee) ; Holub, Michal (advisor)
This thesis deals with the design of the equipment for deburring gears on the Gleason GP 200 machine. The first part contains research of current methods of deburring. At the following analysis of the task dimensions and layout of the machine, focusing on equipment placement, are analyzed. Next, a choice of tool is made. Two variants of design solutions are outlined. One of them is more elaborated. Important structural units are solved. At the end of the thesis an analysis of the geometry and stiffness is made. The maximum equipment load is recommended with regard to the maximum deformation.
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The Composite Materials in the Machine-tool Design
Čunek, Jakub ; Tůma, Jiří (referee) ; Holub, Michal (advisor)
Bachelor thesis contains a brief introduction to materials for construction machinery manufacturing, their advantages, disadvantages and potential applications. Furthermore, this bachelor thesis focuses mainly on the use of unconventional materials for the construction of production machinery and examples of their application in practice.
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Lathe spindle
Zábojník, Petr ; Tůma, Jiří (referee) ; Blecha, Petr (advisor)
Bachelor’s thesis will be talking about one of main parts of lathe, about spindle. In first part I’m going to make a research in this subject. I will mention about a history, development and types of lathe. Following lines will be about function of spindles and their separation in terms of drive. I’m also going to focus on the impact of toughness and precision of the spindle imposition on machining accuracy. Conclusion of the first part will be fulfill with the selection of bearings, methods of work holding, lathe manufacturers and types of lubricating. The second part will be designing of spindle itself. Complemented with an assembly drawing and 3D model.
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Adhesive bonding method for composite bicycle frame
Tůma, Jiří ; Daněk, Ladislav (referee) ; Kubíček, Jaroslav (advisor)
The point of a bachelors work is to propose a method of manufacturing and design form from accessibles sources which survey present condition in problems about composite mountain bike frames. The work is mostly based on informations provided by mountain bike producers. In the first part of bachelor work are summarized pieces of knowledge about composite materials and mainly carbon composite. In the second part are summarized pieces of knowledges about bike frame design. The third part is aimed on manufacturing technology of bike frames and final fourth part considers quality testing of product.
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Nest building activity and bioturbation of the ant \kur{ Lasius niger} (L.).
TŮMA, Jiří
The ant building activity of the nest represents an important phenomenon, influencing ambient environment. If we want to know, which factors are affecting this process, we will describe its details. This paper aims to detrmine the factors which influence nest building activity, by an experiment using the species of Lasius niger (L.) in the artifical formicaria.
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