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Abrasive Water Jet
Kopečný, Libor ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
This dissertation thesis is focused on explaining the broad issue of the non-conventional machining by an abrasive water jet. Introductory chapters deal with various techniques and methods of water-jet cutting and analyze them. Then the following text provides us with a detailed description of the machine itself so that people can understand the way how this technology works. The third chapter is focused on the quality of the resulting surface and the possibility of affecting it by technological parameters. This part is connected with the practical part of my thesis, in which the resultant surfaces of various materials made by different cutting parameters were compared. Subsequent section outlines the development of this technology. The last chapter contains technical and economic evaluation.
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Racionalization of technical plastics cleaning
Bubelíny, Adam ; Osička, Karel (referee) ; Sedlák, Josef (advisor)
The thesis deals with the rationalization of cleaning of technical plastics. The theoretical part of the thesis focuses on surface cleanliness in engineering and possible methods of cleaning and surface treatment with a focus on laser cleaning. The practical part of the thesis deals with the comparison of chemical cleaning with laser cleaning of engineering plastics. The result of the experiment is the evaluation of cleaning time and surface roughness (Ra, Rz) of the cleaned materials. Based on the result of the practical part, a technical-economic evaluation is determined, including an analysis of the proposed solution with environmental impact.
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Laser cleaning of technical materials
Čermák, Filip ; Joska, Zdeněk (referee) ; Sedlák, Josef (advisor)
This thesis deals with the issue of the effect of laser cleaning on the surface of the base material, respectively on its surface texture. The theoretical part of the thesis is focused on the characteristics of laser technologies, an overview of surface cleaning methods in the field of mechanical engineering and the introduction of the company ŽLUTÉ LASERY s.r.o., that helped to create and process the assigned topic. In the practical part focused on the experiment is discussed the choice of materials, production of samples, selection of types of impurities and their application to designated areas. The main part is a description of the laser cleaning process, roughness measurement and statistical evaluation of the investigated surface roughness parameters (Ra, Rz, Rp, Rv, RSm, RPc, Sa, Sz, Sp, Sv, Spd and Spc). In the end, the processed results are evaluated and presented.
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A laser beam in engineering
Šustr, Michal ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
The bachelor thesis focuses on the use of laser beam in the conditions of contemporary engineering, especially in cutting. Emphasis is put on the current technological possibilities of laser in industry, which are described in more detail. Cutting, welding, marking, surface cleaning and hardening, 3D metal printing and surfacing, all using laser beam, is mentioned in the bachelor thesis. The conclusion of the thesis is devoted to the productivity of work with the capacity of the laser together with the balance of operating and maintenance costs.
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Abrasive water jet machining of hard-to-machine materials
Kubín, Matěj ; Polzer, Aleš (referee) ; Píška, Miroslav (advisor)
The diploma thesis deals with unconventional technology of material separation by water jet with abrasive. It describes the influence and specification of technological parameters of the water jet on the quality of the cutting surface. The work contains an experiment, where the aim was to achieve from the theory the influence of tech-nological parameters on surface roughness on composite materials from glass fiber and carbon fiber.
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Parameters of the laser beam
Hort, Zbyněk ; Kolář, Ladislav (referee) ; Osička, Karel (advisor)
The diploma thesis consists of the three main parts. The first part deals with the theoretical description of the laser technology and other unconventional technologies. In the second part, the thesis is focused on testing the parameters of the laser and evaluating the most suitable parameters. In the last part the diploma thesis deals with comparison of unconventional technologies in terms of cut quality
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Abrasive water jet cutting
Midrla, Zdeněk ; Kubík, Roman (referee) ; Osička, Karel (advisor)
This master thesis is consisted of literature search and practise part with focusing on the theme of abrasive water jet cutting. Introductory chapters deal with various methods and principles water jet cutting. Following chapters deal with quality of cutting surface by abrasive water jet cutting. After these chapters is introduced machine equipment of water jet cutting technology. At the end of this theoretical part are listed advantages and comparison with other unconventional technologies. In the practical part is solved design of machinery with regard to manufacturing technology of component flange in series 630 000 pieces per year. Last chapter describes economic evaluation of production.
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Abrasive Water Jet
Kopečný, Libor ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
This dissertation thesis is focused on explaining the broad issue of the non-conventional machining by an abrasive water jet. Introductory chapters deal with various techniques and methods of water-jet cutting and analyze them. Then the following text provides us with a detailed description of the machine itself so that people can understand the way how this technology works. The third chapter is focused on the quality of the resulting surface and the possibility of affecting it by technological parameters. This part is connected with the practical part of my thesis, in which the resultant surfaces of various materials made by different cutting parameters were compared. Subsequent section outlines the development of this technology. The last chapter contains technical and economic evaluation.
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The unconventional Method of Cutting Water Jet
Prax, Ondřej ; Slaný, Martin (referee) ; Osička, Karel (advisor)
The master thesis contains a literature search dealing with the unconventional technology of water jet cutting. The first part is aimed to description of the water jet technology and shows the possibilities of controlling and awarding data for cutting. Follows the chapter about the influences of the input parameters to a surface quality and machining accuracy. The thesis also giving an account of ecological factors of the water jet cutting. The description of the whole technology for production of the sprocket is a part of the thesis. The last part of the thesis is solving the economics of the water jet cutting technology, especially for production of the sprocket with comparing dependency of the cutting conditions.
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Unconventional Technology of Laser Cutting
Indra, Jaroslav ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
The thesis deals with the technology of laser cutting. The beginning is concerned with a general description of laser technology and laser division into basic groups. Next part refers to possible industrial use of laser beam, especially for cutting. Other chapters deal with the components suitable for the manufacture of this technology, technical preparation of production and the proposal to increase manufacturing flexibility when changing products. The last part is devoted to technical and economic evaluation.
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