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Unconventional methods of material cutting
Rusz, Radek ; Mrňa, Libor (referee) ; Podaný, Kamil (advisor)
The bachelor thesis contents literary study of a unconventional methods of material cutting. Work is focused on cutting technology of a water jet, plasma, laser, ultrasound and electron beam. Each method is explained in terms of physical principle and application in industry. Also, there is the technological equipment for the various methods, including evaluation of their parameters. The work is also a comparison of all methods in terms of productivity and material processing quality, assessment their advantages and disadvantages, and suitability for small- or large volume production.
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Unconventional methods of material cutting
Kulenda, Martin ; Mrňa, Libor (referee) ; Podaný, Kamil (advisor)
The present bachelor thesis summarizes the findings of unconventional methods of materials cutting. The thesis is only concerned with the most common and most appropriate methods used in practice. The described methods include cutting by laser, plasma, water jet, electron beam and ultrasound. For each of these methods, the principle of current technologies and technological equipment used for materials cutting in industrial practice is described. This thesis compares the individual methods in terms of their advantages and disadvantages when cutting different types of materials and also the appropriateness of the use of such methods in small or large series production.
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Analyssis of conventional technologies for sawing.
Kašpar, Ladislav ; Osička, Karel (referee) ; Zemčík, Oskar (advisor)
In this work is a survey of conventional method of cutting of material used on common technological routine processed.Principle, used instruments, which are disposed and described in detail and example of used machines and its basic technical parameters are mentioned in each way of material division.In the end examples of aplications of these methods in production practise and summary of advantages and disadvantages of its use is mentioned.
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Stroje a nástroje pro řezání dřeva
Ševčík, David
The bachelor thesis is focused on the woodworking machines tools specifically for saw blades. The first part contains a brief description, division of chips possible angles of saw teeth and saw blade. The next section describes clamping, blunting process, proper maintenance of tool and pedagogical principles. For technical interpretation of the parameters is supplemented with a suitable image. This work is a proposal for the measurement of cutting forces in laboratory exercises.
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Energetické parametry obrábění kompresně plastifikovaného a chemicky modifikovaného buku
Růžička, Dominik
This thesis is concerned with machinability and energy variables of compression- plasticized beech Bendywood?, chemically modified beech Belmadur? and chemically plasticized and compressed beech Lignamon? when cutting the saw and cut to define the appropriate model and its parameters. Calculated values of cutting resistance are compared with the values of natural beech and beech modified experimentally determined on a test rig to simulate cutting circular saw.
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Comparison of pick-up balers Pottinger, Rollprofi 3200 LSC and Krone KR 10-16S during the harvested production.
MACHOVEC, Jiří
This bachelor work is focused on evaluation of round balers. It is about comparsion of machines from major producers of harvest equipment Krone and Pöttinger. The goal was to find out qualitative and quantitative differences between round baler Pöttinger Rollprofi 3200 LSC with fixed compression chamber and Krone KR 10-16s with variable compression chamber. It was evaluated performance, forage quality, cutting quality, the measure of copressibility and economic indicators. The result was a finding, that in terms of quality of work, both machines are comparable. The differences are in purchase costs of machines, as a result of higher fixed costs of pick-up baler Krone KR 10-16s. Next differences appears, when different diameters of bales are needed. Then a pick-up baler with variable compression chamber must be used.
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Collector car use in the primary agricultural enterprise.
KUMPAN, Michal
This thesis seeks to evaluate the use of collector cars from the needs and opportunities for agricultural operators, primary producers. These cars are becoming increasingly sophisticated, technically innovating and expanding their scope beyond the collection and use of cutting and hauling bulky materials from the chaff cutter. The work refers to the attitude of agriculture to this machine.
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