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Tools for threading and their use
Veselý, Václav ; Polzer, Aleš (referee) ; Sliwková, Petra (advisor)
The bachelor’s thesis Tools for threading and their use deals with issues connected to tools, the materials used and their usage in the field of mechanical engineering. Individual parts of the thesis cover types of tools for threading, methods of threading and materials suitable for tap making. Further, the range of monolithic milling taps in the producers’ supply is also analysed.
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Advanced methods of surface topography evaluation
Šindelka, Marek ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
This thesis focuses on a measuring and topography of a components´ surface evaluation and it contains the overview of basic methods which includes the description of contact and non-contact measuring devices. Furthermore, the thesis also describes ways of surface texture evaluation through profiled and areal method, including an outline of ČSN ISO parameters. The practical part of the thesis focuses on the evaluation of metric threads´ M10 surface, crafted by diverse cutting and forming threads. The surface was scanned with the optical device called Alicona IFM G5 and it was evaluated through the profiled and areal method. The 2D and 3D parameters were acquired and then compared during the measuring.
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Machining of titanium alloys
Horáček, David ; Mouralová, Kateřina (referee) ; Píška, Miroslav (advisor)
This thesis is focused on titanium and its alloys, in terms of properties and uses. The problems of machinability, cutting tools, quality of machined surfaces and machining method are discussed. Threads in titanium alloys Ti-6AI-4V were cut in the practical part. The intention was to compare torque moments and surface quality of threads by using two cutting oils.
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Production of screw-thread in small engineering company.
Straka, Jiří ; Prokop, Jaroslav (referee) ; Kalivoda, Milan (advisor)
This work, wrought in branch of engineering technology in terms of baccalaureate studies, mentions the basic type partitioning of screw threads and their screw-threads labelling. There are presented some possibilities of screw threads manufacturing by chip-forming operation and by chipless machining operation, both with using of appropriate tools. Further the methods of production used in small machine-works are described. In this case the small machine-works is represented by secondary technical school.
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Fingerprints Generator
Chaloupka, Radek ; Orság, Filip (referee) ; Drahanský, Martin (advisor)
Algorithms for fingerprints recognition are already known for long time and there is also an effort for their best optimization. This master's thesis is dealing with an opposite approach, where the fingerprints are not being recognized, but are generated on the minutiae position basis. Such algorithm is then free of the minutiae detection from image and enhancements of fingerprints. Results of this work are the synthetic images generated according to few given parameters, especially minutiae.
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Advanced methods of surface topography evaluation
Toman, Ladislav ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
This paper deals with the description of the surface texture measurement methods, describes the devices by which the surface texture can be recorded and describes the parameters that allow the surface texture to be quantified. The practical part deals with the evaluation and comparison of the parameters of metric threads M10 made by cutting and forming by analysis of their cross-sections, then the attention is focused on the analysis of pressure forces and torques which occur during the manufacture and in the last part of the thesis there is an economic evaluation of the cost of manufacturing one piece of cut thread.
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Threading operations in the building industry
Čech, Ondřej ; Fiala, Zdeněk (referee) ; Kalivoda, Milan (advisor)
The aim of this bachelor thesis is the sumarization of common threads and thread joints used in construction industry complemented with illustrations of actual joints. On construction thread cutting possibilities, more precisely situations, where there is no possibility to use stanionary placed machinery. Mechanical engineering machinery overwiev. Technological regime of selected thread joints. This thesis is supplemented with description of specific machining and thread cutting work on heavy-duty part of hydropower plant.
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Production of sleeper screw
Bartošek, Filip ; Štroner, Marek (referee) ; Lidmila, Zdeněk (advisor)
Bachelor thesis developed in the bachelor degrees addresses technological process of the production sleeper screw. The production uses technology volume thermoforming. The project was elaborated in cooperation with the company ŠROUBÁRNA KYJOV s.r.o. The screw will be made from material ČSN 11 503. This material is unalloyed construction steel with property of weld. Based on the literature study technology volume thermoforming was chosen tamping in closed instrument for the production of head screw. For the production of screw-thread was chosen technology of rolling. For the production head of screw was chosen horizontal fitting press machine. After the production there were used surfacing by galvanic zinc coating because of the better corrosion resistance.
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Production of threads with taps
Juránek, Martin ; Dvořák, Jaromír (referee) ; Píška, Miroslav (advisor)
This Bachelor thesis deals with the issue of production threads with taps. The introduction of th work briefly describes the use of thread in machine-building, thread geometry and basic types of threads. The work goes on to describe the methods tapping and thread control function. The work also deals with the description of types of taps, tool materials and the description of the three most used types of coating in taps. The experimental part adresses the question of whether the thicker layerof the TiN coat leads to an extension of the tool life. Two types of taps were used in the experiment. One type of taps had a coating thickness of 3-4 m and the other had coating thickness of 5-6 m. The experiment included measuring of time-dependent torque. The measured data were processed and subsequently evaluated whether the thicker coating layer resulted in reduced tool wear and increased tool life.
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Technological and economic analysis of the production for the automotive industry
Sedláková, Eva ; Petrenec, Martin (referee) ; Píška, Miroslav (advisor)
The thesis deals with an analysis of an existing technology of thread forming under various technological parameters used in car industry. Furthermore, it characterizes metric threads, their production and quality control, forming taps, process fluids and other process parameters. In the experimental part the experimental tests with a conventional and CNC drilling machines were carried out. The influence of various process fluids on surface and thread quality have been assessed statistically. The technical-economic evaluation of the process fluids and their effect on the technology has been made. The work supports a beneficial role of soap and polymers as convenient tribological means at thread forming.
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