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Rationalisation of chip management
Mrkvica, Jan ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
The diploma thesis deals with the rationalization of chip management in a selected manufacturing company. The first part of the thesis analyses the current state of the chip management in the company, which is divided into conventional and non-conventional machining. Then a theoretical analysis is carried out, which focuses on chips, in terms of their origin, types and then an analysis of cutting media. The next theoretical section discusses EDM. In the last theoretical part, an analysis of the possibilities for processing chips is made. In the practical part, three options for rationalisation of chip management are discussed, and the suitability of each of them for the selected enterprise is assessed. The most advantageous of them is then elaborated into an implementation form and a technical – economic evaluation is carried out in which the suitability of the solutions used is assessed. Attention is also paid to the rationalisation of EDM.
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Chip conveyor
Horák, Miroslav ; Jonák, Martin (referee) ; Malášek, Jiří (advisor)
This bachelor thesis deals with the construction design of the conveyor selected on the basis of the research. The bachelor thesis describes the purpose of the chip conveyor and how it works. It is described here by which parameters the conveyor is selected, what are the types of these conveyors and the list of companies that specialize in their production. The next section describes the design of the conveyor for maximum versatility and a description of its design elements. Further, the strength calculation of the shaft and basic calculations of the other elements are made. The work is displayed in 3D visualization and is also accompanied by drawings of important detailed drawings.
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Cement-bonded particleboards with utilization of alternative raw materials
Urbánek, Libor ; Vacula, Miroslav (referee) ; Bydžovský, Jiří (advisor)
The diploma thesis is focused on effective utilization of currently produced alternative raw materials in the production of cement-bonded boards. The emphasis is primarily on the scraps and dust arising from the processing of cement-bonded slabs, as well as on slag and limestone. The theoretical part contains a survey of current knowledge about the given issue. In the experimental part, the alternative raw materials were analyzed in detail and their influence (as modifier components of the matrix and the filler) on the properties of cement-bonded slabs was examined. Research and development took place using physico-mechanical, thermal and microstructural methods.
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Analysis and programming of trochoid interpolations on a CNC machine
Jílková, Ingrid ; Ohnišťová, Petra (referee) ; Píška, Miroslav (advisor)
This diploma thesis deals with the analysis and programming of the trochoidal milling which is verified by interpolation in a CNC machine. The theoretical part of thesis deals with the research of the dynamic milling, in particular about the trochoidal milling. This part is focused on the mathematical description, creation of algorithms and the types of trajectories. It explains the cutting conditions as the cutting section of a chip, force loading and as well the quality prediction of the machined surfaces. Furthermore, it clarifies the advantages and the reasons of use of the trochoidal milling. The practical part of the thesis deals with the analysis and the experimental verification of the parametric programme for the selected application. At first, it is explained how were the trochoidal and the linear milling programmed. Next, it describes the programming of the trochoidal interpolations and their analysis with regard to the cutting section of a chip, force loading and the quality of the machined milled surfaces depending on the input parameter – the feed speed. This part presents the comparison of the trochoidal and the linear milling methods and their evaluations which are also done with regard to the cutting section of a chip, force loading and the quality of the machined surfaces. This part also suggests recommendations for practice depending on the results and it also contains the techno-economic assessment.
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On the modern technologies of hole production in metal materials
Kříž, Daniel ; Humár, Anton (referee) ; Píška, Miroslav (advisor)
The bachelor thesis is focused on the evaluation and description of modern methods of holes production. The first part deals with the classification of methods, description of production, achievable technological parameters and production finishing methods. The second is dedicated to description of tools for holes production by different methods. Third part evaluates machines for holes production. In the last part of this thesis the unconventional methods of holes production are described.
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Optimization of production steering shaft
Hlavinka, Martin ; Kalivoda, Milan (referee) ; Jaroš, Aleš (advisor)
Bachelor thesis deals with the creation of the optimal divided chip in the turning technology. The material for production of the steering shaft is steel C35RC suitable for forming and turning from which semi-finished products are produced at horizontally forming presses. They are machined at the production robotized line where the problem with the undivided chip arises. For the specified set of cutting conditions the uses the cutting tools which aren’t very suitable for the given types of technological operations. The recommended values of cutting conditions are different from the specified set of cutting conditions. The result will be choice of new-cutting tools for turning technological operations to shape short divided chip.
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Simulation of cutting force during milling process with straight tooth plain milling cutter.
Zemčík, Tomáš ; Sedlák, Josef (referee) ; Zemčík, Oskar (advisor)
To make a simulation of cutting force during milling process with cilindrical cutter is the aim of this diploma thesis. Preliminary part is devoted to technology of milling, milling cutters and cutting materials. The next section is aimed at kinematics of the cutting process, a theoretical analysis of power proportion, the possibility of measurement of force actions. General information about the programming software, a theoretical simulation model, graphical environment of created application, are the other points of this diploma thesis. The work also includes evaluation of the experimentally measured values and compared with values obtained from the created application.
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Design of the PKD cutting edge cutter
Křehlík, Luboš ; Trčka, Tomáš (referee) ; Polzer, Aleš (advisor)
The thesis deals with the design, construction, production and testing of cutters with polycrystalline diamond cutting edges. Polycrystalline diamond is a suitable cutting material for machining very abrasive materials such as aluminum alloys or composite materials. The design of the tool is focused on the application of the chip breaker on the front of the tool. The aim of the solution is to reduce the cutting force in the machining of the aluminum alloy used in the aerospace industry. The first part of the thesis deals with problems related to milling technology. The practical part describes the design and construction of prototype cutting tools. Three tools were designed for experimental measurement. The technology of cutting tools made from super hardened cutting materials with laser technology is presented. The experimental part of the thesis is a measurement of the cutting force according to cutting parameters and machined material.
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