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On the turning of spring steels
Ciba, Martin ; Polzer, Aleš (referee) ; Píška, Miroslav (advisor)
This bachelor thesis deals with turning of spring steels focusing on the application of higher cutting speed and modern cutting materials. It comprises an experimental exercise Quick stop of tool, designed to analyse the process of a chip formation of the specimen of a disc spring.
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On the evaluation of cutting performance when machining
Kolomý, Štěpán ; Fiala, Zdeněk (referee) ; Píška, Miroslav (advisor)
This bachelor thesis focuses on cutting performace during intterupted cutting conditions and on the problems of intermittent turning. There is tested cutting performace of indexable inserts from cubic boron nitride and ceramic during interrupted face turning in experimental part. Tools wear and shape of chips are analyzed. The output of this work is data processing and their comparison.
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Streamlining production technology for specified pinion housing
Sádlo, Dominik ; Ohnišťová, Petra (referee) ; Zemčík, Oskar (advisor)
The aim of the thesis is to propose a new technology for the production of the specified pinion case and to compare it with the existing technology. At the beginning of the thesis are described the basic characteristics of the bushings and the use of the worm housing part produced by Wikov MGI. In the next part, attention is paid to the current technology of production and its evaluation. The practical part includes the choice of the machine, the clamping mechanism and the tools necessary for making the part. The last chapter of the thesis compares three variants of the technological process, in terms of time-consuming operations and economical advantage for Wikov MGI.
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Efficiency Improvement Concept of Production of Rotary Component
Trčka, Radim ; Slaný, Martin (referee) ; Sedlák, Josef (advisor)
This diploma thesis deals with machining of rotating components made of composite material. Components of the two manufacturing technologies are compared. The aim of the thesis was to analyze and calculate the costs of the given technologies for different production batches. At the end of the diploma thesis there is a technological-economic evaluation and decision on which production technology will be used.
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A proposal of production technology of a specified component
Janíček, Adam ; Zouhar, Jan (referee) ; Sliwková, Petra (advisor)
This bachelor thesis fosus on machining the parts from worse workable material, exactly stainless steel 1.4404, when the machined component will be the axis of the three-way valve used in food industry. The introduction of my thesis contains of theoretical information about technologies used in components production, continues with an option of machines and tools suitable for fabrication of this component, following with practical part containing the production of manufacturing process, manual, calculation of cutting conditions, production of the component on CNC machines itself, and the last part is complex control of the fabricated component.
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Determination of duration that driver needs to assess the situation behind the vehicle in course of turning or overtaking manoeuvres.
Belák, Michal ; Rábek,, Vlastimil (referee) ; Kolíbal, Zdeněk (referee) ; Semela, Marek (advisor)
The dissertation thesis deals mainly with determining of the duration that driver needs to assess the situation behind his vehicle at manoeuvers of turning and overtaking, based on the measurements made in real road traffic. These are common and frequent driving manoeuvers, which the driver performs while driving the vehicle in regular road traffic. For their safe execution the driver needs to have sufficient amount of information about the situation around the vehicle and especially behind the vehicle. This information can driver usually gain from devices for indirect vision, most often rear view mirrors. The time thus defined, suitable e.g for the needs of forensic engineering applications for the analysis of road accidents, has not been studied in detail yet. For the purpose of its determination, therefore, an extensive analysis of the current state of problematics related to the indirect vision from the vehicle was carried out. There were formulated influences on the time duration and with this related characteristics of humans as a part of the driver-vehicle-environment system in the thesis. The characteristics of human perception were investigated and the problematics of reaction time was discussed. Existing research focused on the duration of rear view mirrors glances was analyzed and possible methods of its measurement in detail were presented by author. Based on this, an experiment was designed and realized, the time necessary for rear view mirror glances was defined by the author. The results enable to quantify the time that the driver needs for assessing the situation behind the vehicle in connection of turning, overtaking and other driving manoeuvers when the driver needs to change the driving direction. The conclusions showed that the time needed to evaluate the situation behind the vehicle by means of the rear-view mirrors does not normally exceed duration 1 second.
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Efficiency Improvement Proposal of Machining Process of Cylinder Component for Oil Wells
Koudela, Michal ; Sliwková, Petra (referee) ; Sedlák, Josef (advisor)
This diploma thesis is concerned with a proposal for increasing the efficiency of machining when manufacturing an inner sleeve at the company Sanborn a.s. In the diploma thesis, the technology used for machining itself is first briefly described, followed by a description of the original production technology including a description of machine and hand tools used and cutting conditions. The next part of the paper describes the proposal for increasing the efficiency of machining operations. The proposal includes a description of the suggested solution that will lead to increased efficiency, a machine proposed for the specific operation, appropriate tools and proposed cutting conditions. The benefits of implementing the proposal are also described here, both in terms of saving unit time, and in terms of the machining technology itself, where, for example, the formation of chips is improved, the inner tension of machined components reduced, etc. The diploma thesis further includes a technical-economic evaluation assessing the economic benefits of the changes introduced.
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Turning tools
Václavek, Jiří ; Sámelová, Vendula (referee) ; Humár, Anton (advisor)
The bachelor's thesis deals with turning tools and compares domestic and foreign companies' products. The turning is generally described with basic formulas in the first part of the thesis. The second part is aimed on tools, categories of tools and materials which they are made of. In conclusion, there is comparsion of several tools from domestic and foreign producers.
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Solution technology of part from three-phase alternator
Pokladník, Robert ; Zouhar, Jan (referee) ; Kalivoda, Milan (advisor)
This Diploma thesis deals with design technology of alternator claw pole. The technology is designed to achieve low production costs. The purpose is to prevent the transfer of manufacturing contract to countries with cheap manpower and low production costs. Technology design is done by selecting billets to the processing and economic evaluation. The dominant technology is a cutting operation that is performed on numerically controlled machines.
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Verification Technology of Pressure Valve Body
Majer, Lukáš ; Jaroš, Aleš (referee) ; Kalivoda, Milan (advisor)
This thesis is about verification defined machining time what were set by department of technology in company IMI CCI Brno. In work will be compared defined time, real time and theoretic time, what will be calculated. Theoretical time will includes new technology process where will be make proposal to change some tools.
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