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Manufacturing of metal yoke of electrical socket by compound tool
Svozilová, Lucie ; Řiháček, Jan (referee) ; Peterková, Eva (advisor)
The project elaborated design of technology production of the metal yoke of electrical socket made of steel DX51D + Z200 by compound progressive tool. Stock material for series of 200 000 pieces is a strip of coil. Manufacturing is realised in five steps consist of cutting, bending and flanging. For flanging was constructed a special mechanism for whose is necessary to use hydraulic counterholder, which is sold as a special peripheral equipment of manufacturing machine. The machine choice was adapted to this criterium. The servopress DSF-N1-800A was chosen as a manufacturing machine, which is made by AIDA company. The press can produce force of 800 kN and make work of 4000 J. Selling price of a one yoke is 24,5 Kč when the profit is one hundred percent. The break-even point comes with 58 140 made piece.
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Pressure losses in heating systems
Švanda, Martin ; Horká, Lucie (referee) ; Počinková, Marcela (advisor)
This diploma thesis deals with pressure losses in heating systems. The diploma thesis is divided into three sections. The first part is theoretical and deals with the occurrence of pressure losses. It discusses the properties of the fluid that affect pressure losses. It also deals with hydrodynamic phenomena, flow distribution, pressure loss distribution and its calculations. The aim of the second part, which is practical, was to create a heating project for a selected object. The object is a two-floor kindergarten building located in Velké Němčice. For this project, two heating variants were created. For the first variant, radiators and heating benches were designed and for the second variant, underfloor heating was installed in the building. The goal was to use a source which will gain heat mainly from renewable sources, so the air / water heat pump was chosen as the source of heat production. The project ends with a technical report. The third part of the thesis is dedicated to an experiment which purpose was to find out how the pressure losses of the connecting pieces are reacting to the change with the change of the heating water conditions (flow, temperature). Alongside, two pipes were created which differed in the type of connecting pieces so it allowed to compare how their pressure losses differ. Both pipes were connected by radial pressing, but the fittings differed in the quality of the brass, and therefore in the construction. Also, part of the experimental section of the diploma thesis is a description of the course of radial pressing of fittings from the Herz company.
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Preparation processes and properties of porous zinc material
Moleková, Kristína ; Březina, Matěj (referee) ; Hasoňová, Michaela (advisor)
Bachelor thesis occupy with preparation of porous material from zinc powder by cold pressing, cold pressing followed by sintering and hot pressing. This thesis contain both preparation of bulk material, and charakterization of materials based on the compaction process conditions. Impact of pressing process on subsequent progress of sintering and final attributes of materials is evaluated. Bulk material is characterized considering to structure, porosity, and physical-mechanical properties. Properties of final metarial will serve to optimize conditions for process of pressing and sintering.
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Optimalization of parts bonded by hot crimping
Liškář, Ladislav ; Řiháček, Jan (referee) ; Lidmila, Zdeněk (advisor)
The thesis describes the procedure for verifying the conceptual ideas of the company. Design and production of prototypes, testing and evaluation, quantifying savings. Two variants of crimped bond were chosen. For each was length of shaft changed to three and four crimped grooves. These prototypes were tested in two static and one dynamic tests. Recommendation for company is continue with other phases of development for shaft with four grooves.
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Evaluation of Power Efficiency of Radioactive Waste Management Technologies Used in the Czech Republic
Penzinger, Pavel ; Varmuža, Jan (referee) ; Katovský, Karel (advisor)
This thesis deals with the evaluation of power efficiency of technologies for the radioactive waste management used in the Czech Republic. Thesis is divided into two main parts – theoretical part and a practical part. Theoretical part of the thesis deals with a brief description of the organization connected with radioactive waste operating in the Czech Republic and storage of low and intermediate level waste in the Czech Republic. This is followed by various kinds of radioactive waste division according to Czech legislation and regulations of the International Atomic Energy Agency. There is also a description of the most used technologies and methods o of radioactive waste management technology used in the Czech Republic and world. Practical part contains specific evaluation of energy efficiency of each technology for the radioactive waste management. Each evaluation contains the energy efficiency of production use materials and transport. Evaluates are technologies used consistently and for sufficient quantities. Energy efficiency is describe from the place of origin of radioactive waste, which is the Nuclear power plant Dukovany, Nuclear power plant Temelín and ÚJV Řež, a.s. The end of description is the repository site of radioactive waste Dukovany for radioactive waste from nuclear power plants or disposal site Richard for institutional radioactive waste.
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Design of single-purpose machine for pressing bearings in pulleys
Roupec, Michal ; Továrek, David (referee) ; Bradáč, František (advisor)
Purpose of this thesis is to make constructional modification of single-purpose pressing machine for Huisman Konstrukce, s.r.o. company. Present machine is non-operational and not enough powerful for present requests of workshop. Intended modifications are to describe present condition of machine, find present requirements and design simple modifications. All modifications are checked by calculations and sketched in shop drawings. There were also made alternative options of modification to show machine more versatile and automatic.
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Assessing the influence of tool warming on the mass production process
Chrz, Jan ; Císařová, Michaela (referee) ; Lidmila, Zdeněk (advisor)
The work introduces literary study, which is devoted to sheet forming. Particularly to technologies connected with problem of pressing – blanking, bending and drawing. Further it is aimed at mass production of mouldings complicated in shape, which is nowadays supported by computer technologies (simmulation of sheet forming process, kinematics of the line, burden of the tool) and on warming of the tool. Warming of sheet formoning tools is redominatly caused by friction between the tool and semiproduct. It decreases lifetime (longevity, operable life, usable life) and quality of the moulding. Warming could not be elimitated, but could be moderated by use of lubricant for friction decrease and tool cooling, slower production or use of tempered tool.
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Proposal to Reduce the Non-conformance Rate in the Manufacturing Process
Hamr, Zdeněk ; Lapeš, Ondřej (referee) ; Videcká, Zdeňka (advisor)
This bachelor´s thesis deals with a proposal to reduce the non-conformance rate in the manufacturing process. It contains three process optimization proposals to minimize scrap. The work is divided into three main parts. The first part is theoretical dealing with theoretical concepts. The second part contains a global and detailed analysis of production with identification of the main problems. The third part includes a design solution based on the analytical part.
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Lubricants for forming technologies
Tollrian, Zdeněk ; Císařová, Michaela (referee) ; Šlais, Miroslav (advisor)
This thesis deals with the lubricants used in metal forming technology. Requirements for lubricant, grease and selection process of forming the necessary information to determine the desired properties of the lubricant. The thesis presents an overview of lubricants that are used in various forming processes, their distribution and use. In each chapter the types of lubricants that are used in engineering practice.
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Production single parts from sheet metal with usage technology deep drawing
Jurča, Jan ; Dvořák, Milan (referee) ; Žák, Ladislav (advisor)
JURČA Jan: The manufacturing of sheet metal part by deep draw technology. Thesis of Master´s Studies, the 5th Year of Study, the School-year 2008/2009, The Institute of Manufacturing Technology, Department of Machining, FSI VUT Brno.The thesis deals with the project of manufacturing the part of the car body – the fifth door by deep draw technology. The material is zinc-coated sheet metal HX220YD EN 10292. Mechanical properties and suitability of the material are evaluated by mechanical tests. The structure of the material is evaluated by metalography scratch pattern. The analysis of draw process and manufacturability of the part is made by calculations and AutoForm software. The production line, necessary machinery and construction solution of draw tool for the manufacturing the part are determined. Last section deals with economical evaluation of the production.
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