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Vibration at turning
Procházka, Luděk ; Kolář, Ladislav (referee) ; Fiala, Zdeněk (advisor)
This thesis deals with vibration which occurs during the cutting process in turning. It describes vibration, types of vibration and its causes. It also provides a basic description of the turning technology. The main part of the thesis is a description of self-excited vibrations, an unwanted phenomena in the turning process, which needs to be eliminated or reduced. The experimental section of the thesis aims to measure natural frequencies of the machine-tool-workpiece system and to create a stability diagram for this process.
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Solution technology of two groove guide pulley production.
Pokladník, Robert ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
Technology compiling two groove pulley making for two types of billets. As a billets is used in both cases a cast iron EN-GJL-250. The technological process solves production of both variants from designing the billets to trans-mission to the storeroom. The production is realized through cutting operation by CNC machines. The tools are selected with cutting tip. Finaly both variants are compared from economical perspective.
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FEM for machining simulation
Vojtek, Aleš ; Madaj, Martin (referee) ; Zouhar, Jan (advisor)
The introduction to turning basics, chip separation process, cutting force generation and description of the finite element method. With this knowledge, a cutting simula-tion of AISI 1045 steel was done for 3 different rake angles, which was simplified by using an orthogonal machining model. The next simulation was cutting of AISI 6150 steel with the use of a 3D model of the grooving insert. The results of these simulations were then compared to the experimental results, and feasibility of finite element method was determined together with future recommendations for acquiring more pre-cise results.
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Thermal processes in machining of metal and non-metal materials
Čermák, Filip ; Chladil, Josef (referee) ; Kalivoda, Milan (advisor)
This bachelor's thesis examines the temperature processes during the machining of various materials in the form of an experimental study. The elaboration of this topic includes acquaintance with machining technologies of milling and turning, introduction to the issue of temperature processes during the machining process and their measurement. The second part of the bachelor's thesis is focused on an experiment in which the temperature is measured by a pyrometer during the machining of metallic and non-metallic materials. In the end, the measured results are evaluated and presented.
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Machining of components on CNC machines
Osička, Petr ; Mouralová, Kateřina (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis deals with the manufactory of the rotor for the electric motor on the CNC lathe. The first part describes the function and design of manufactured constituent part. The next chapter designes and describes production process of machining the shaft and next steps of manufactory are described. They basic production capacity calculations are made. In the next part the NC program is designed, which is used to manufacture the shaft as a model product.
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The Study of Selected Technological Improvement Operations
Velešík, Martin ; Brhel, Josef (referee) ; Jurová, Marie (advisor)
The thesis is focused on improving a chosen technological operation in the M&V, spol. s r.o. company and its production division – STIMZET s.r.o. An analytical comparison of both the current and the proposed technology is made, using direct costs of the actual tech operation and the length of the operation. The result of the thesis is a suggestion of choosing the more useful technology – either the new or the current.
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Construction of miniature turning tools with insert
Balhar, David ; Slaný, Martin (referee) ; Zemčík, Oskar (advisor)
The main aim of this bachelor thesis is to design a set of miniature turning tools with insert. Elaboration is divided into four chapters. In the first chapter we can find research, which deals with the issue of the construction of turning tools. In the second chapter appears survey produced miniature types and their uses. The most important is the third chapter, because it deals with the main output, and the actual design of selected types of turning tools. The three of turning knives were selected, which are reviewed in the fourth chapter, both technically and economically.
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Technology solution with cutting operation of "cover" component
Chlád, Luboš ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
In mentioned solution technology of cover part is processed component analysis, proposal of semi-finished product and production technology. In this thesis are selected concrete cutting machines, tools and technological process is elaborated. At the end the techno-economic evaluation is done. This evaluation deals with calculation of times for separate cutting operations, number of machines, tools and workers.
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Design of a shaft of single stage gearbox machining
Fiala, Dominik ; Trčka, Tomáš (referee) ; Varhaník, Matúš (advisor)
This bachelor thesis deals about design of machining single-stage gearbox shaft. The thesis consists of five main parts. The first part focuses on constructional-functioning characteristic of single-stage gearbox shaft. The second part focuses on shaft component analysis. The third part focuses on 3D model and component drawing. The fourth part focuses on preparation of TPV documentation and the last part is the evaluation of the design.
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