National Repository of Grey Literature 30 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
A study of cutting forces during the turning process and their measurement
Piroš, Viktor ; Trčka, Tomáš (referee) ; Polzer, Aleš (advisor)
This bachelor’s thesis is structured as a literature search. Its target is to show a complex look at the problematics of force load in turning process. In the beginning, the thesis is focused on brief characteristics of turning process and tool geometry as a one of the main aspects influencing the force load in the machining system. Furthermore, the thesis deals with problematics of force load creation and its dependence on basic cutting parameters. Second part of the thesis is dedicated to the options of force load measurement in turning process and works out an illustrative example of numerical evaluationof measured data with basic statistical indicators in detail.
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.
Technology design for screw connection for extreme loads
Václavek, Jan ; Trčka, Tomáš (referee) ; Kalivoda, Milan (advisor)
Screw connections are a commonly used method of joining two or more components that are loaded with different types of loads during their operation. Screw connections are in some cases extremely stressed. The topic of the bachelor thesis is the introduction of potential types of extreme load on a screw connection and acquaintance with a specific case of an extremely stressed screw connection. A design of the production process is created for the discussed case and the manufactured components are evaluated in terms of assembly and service life.
Local IR spectra measurement system
Pospíchal, David ; Trčka, Tomáš (referee) ; Škarvada, Pavel (advisor)
The diploma thesis deals with the design of a system for measuring infrared spectra from local areas of samples. The theoretical part describes the electromagnetic waves and related phenomena. Furthermore, the semiconductor junction and solar cells are discussed. The following is a basic description of line spectrometers. In the practical part, a suitable arrangement of the whole system, collimator design, and especially the core of the whole work, ie control software and signal processing, are proposed.
Design and manufacture of bending fixture
Ševčík, Jan ; Trčka, Tomáš (referee) ; Zemčík, Oskar (advisor)
The work deals with the design and manufacture of bending fixture. It contains a comparsion with current bending fixtures on the market and a justification for the production of a given type. Then the work contains a proposal of the constuction of individual parts with the selection and description of technologies of their production and the process of their production. The work also contains complete drawing ducumentation of all parts of the bending fixture. The conclusion of the work contains the possibilities of design modifications and economic and technological evaluation.
Removal of burrs during production from flat semi-finished product
Máslo, Jiří ; Trčka, Tomáš (referee) ; Kalivoda, Milan (advisor)
This bachelor’s thesis explains the definition of burr formation in individual methods of machining, there are ale described mothods of deburring, both conventional and many unconvetional methods. A large part of the bachelor’s thesis is focused on the removal of burrs from drilled holes, there are a lot of special deburring tools on offer. Experiment is performed in the last part, in which several manual methods for deburring are tested on simple components.
Renovation of railway wheelsets
Halásek, Jan ; Trčka, Tomáš (referee) ; Kalivoda, Milan (advisor)
This bachelor´s thesis deals with an analysis and a description of railway wheelsets´ renovation. The theme offers a complete view of a technology, conditions and renovations´ posibilities. In the theoretical part, there is mentioned a basic terminology with an overview of all defects and also their removing in the workroom practice. Practical part is illustrated with the technological process of a repaired vehical in the company DPOV, a. s. PSO Nymburk. In the end, there is a summary of all potencial possibilities leading towards improving the functioning of the company with the emphasis on renovation of a components, which nowadays must be eliminated out of operation.
Streamline production of sewing machine parts
Švec, Michal ; Trčka, Tomáš (referee) ; Kalivoda, Milan (advisor)
The diploma thesis deals with the proposal of more effective production process of the feeder holder component in the company MINERVA BOSKOVICE, a.s. The first part of diploma thesis dedicated to the technologies which are used in the production of components. The second part deals with the analysis of the component and its current production process. The third part contains a proposal for a new production process, which contains a description of the machines used for production, a new jig, selected tools, mechanical calculations and technological method. The last part evaluates the current and newly proposed variant of production with their comparison.
Force loading of milling tools during the machining process
Švec, Michal ; Trčka, Tomáš (referee) ; Polzer, Aleš (advisor)
This thesis compares the force load of two kinds of cutting tool inserts while milling. The thesis is devided into two main parts – research and experiment. The research part is focused on the theory of the force load measuring, cutting tools and cutting tool inserts and their coating. 14 grooves were made with each cutting insert while the force load was measured. Constant cutting conditions were applied. The experiment was repeated four times for each kind of cutting insert. The aim of the thesis is to determine if both kinds of inserts mill with the same force load. The results reveal that one kind of cutting tool inserts mill with the force load higher up to 85 %.
Force loading of cutting tools during the machining process
Vančura, Tomáš ; Trčka, Tomáš (referee) ; Polzer, Aleš (advisor)
The theoretical part of the diploma thesis summarizes a knowledge of the force loading of the cutting tools and state of the art in the cutting force measurement. In the experimental part, work deals with the development of the software for a force records analysis. The main objective of the software is to automatise the processing and analysis of the measured force records. The functionality of the newly created software was verified by evaluating the circle-segment end mills experiments performed at the Institute of Manufacturing Technology of the Faculty of Mechanical Engineering, BUT.

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