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Design of Electrical Machine 6 kW, 120 000 rpm for Helium Turbo-Circulator
Bárta, Jan ; Rafajdus,, Pavol (referee) ; Dušek,, Jiří (referee) ; Ondrůšek, Čestmír (advisor)
The induction machine with a squirrel cage is a workhorse of the industry. The main advantage of an induction machine is the low manufacturing price, simple and robust construction, low maintenance requirements. However, for high-speed applications, induction machine with a squirrel cage requires design modification due to the mechanical restrictions. The objective of this thesis is to show design process, methodology and assembly of the induction machine for high-speed applications. In this thesis, the rotor dimensioning data are presented. The results are demonstrated on the design of the 6 kW, 120 000 rpm solid rotor squirrel cage induction machine. This thesis also contains calculation and design of three different electrical machine topologies for a turbo circulator application. The electrical machines are designed with 6 kW output power at 120 000 rpm. The machines are estimated by using electromagnetic, thermal, and mechanical calculations. The drawbacks and advantages of each topology under study are described. For other high-speed applications, a comparative method helps in choosing the suitable electrical machine topology by examinations of discussed criteria. Rotor design effect on the electromagnetic performance of the induction machine is shown. Mechanical stresses are calculated with Finite Element Method analysis. Various assembly technologies to produce solid rotor with squirrel cage are discuss and compare. Describe approach enables high electromagnetic performance and durable construction of the high-speed induction machine. Work is confirmed by measurement on the manufactured prototype.
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New production of hydraulic cylinder wreath
Svoboda, Lubomír ; Dvořáček, Jan (referee) ; Zemčík, Oskar (advisor)
This diploma thesis deals with a production proces of komponent from hydraulic cylinder, called wreath. The first part is focused on the desciption of the current production proces, with their positive and negative side. In the second part is made a proposal of production proces. At the end je made an economy and technical analysis
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Suggestion of the manufacturing technology of a fastener for plastic molding
Duda, Tomáš ; Slaný, Martin (referee) ; Jaroš, Aleš (advisor)
The diploma thesis convey the information about the creation of technological procedures leading to the optimal way of repairing damaged parts of the fixture and creating production procedures for the production of new parts of the assembly. The theoretical part is focused on the analysis of the issue, determination of material of damaged parts for future production and designed semi-finished product. Furthermore, the technology of production from the point of view of used technologies is discussed. This includes a description of the tool materials. The practical part of the thesis is focused on the design of technological procedures for repairing damaged parts, which must be repaired as soon as possible. For the future production of new parts, the second half of the practical part includes the manufacturing processes including their description. There are evaluated variants of repair and production of new parts at the end of the thesis.
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Technology Design of a Selected Part and Application of the Designed Changes in the Manufacturing Process
Turčín, Jiří ; Jaroš, Aleš (referee) ; Slaný, Martin (advisor)
This master thesis deals with a design of technological process description for a mechanical engineering part called „pressure plate“. The component is analyzed in regards to its mechanical engineering design and used material. Some brief theoretical prerequisites for an effective solution of the problem are summarized in the paper. A detailed research of current technological methods is provided, together with an analysis of the State-of-the-Art in manufacturing, introduction of technological possibilities of the company and a timeline records of the manufacturing process. In regards to the current methods and technologies, changes to the technological process are applied. Among these changes is a unification of machinery used in the process. This leads to an innovation of the methodology and the ways to clamp the component. Other applied alternations focus on a stabilization of the drilling process, which is reached by a choice of new tools and adjustment of cutting parameters. Furthermore, a variable coding of tools in case of automatic tool change is designed. This paper then provides two possible solutions based on proposed changes and alternations. These solutions, together with the tools mentioned, are subjects to a techno-economical assessment.
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Design of oil distribution transformer
Mrajca, Miroslav ; Mach, Martin (referee) ; Ondrůšek, Čestmír (advisor)
This master thesis deals with the manufacturing process of oil distribution transformers. Firstly, the thesis devotes to the design arrangement of the magnetic circuit and its manufacturing technology. The procedure of cutting laminations for core and their building into the core. Subsequently, the thesis describes technologies used for manufacturing primary and secondary windings including procedures on winding machines. Then it deals with the production of the tank and the final assembly of the transformer into one unit. The next part of the thesis discusses the design procedure of the assigned distribution oil transformer with a numerical calculation while respecting the requirements of the standards. Finally, the costs of the material of the designed transformer are determined.
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Proposal for a Lean Manufacturing Operation in Selected Company
Bistrá, Vendula ; Veverková, jarmila (referee) ; Jurová, Marie (advisor)
The thesis is focused on the implementation of a lean component in the manufacturing process of First Brno Machinery Velká Bíteš, Ltd. With the help of lean componant Value Stream Mapping (VSM – value stream mapping) an analysis of the current status is determined that underlies the bottleneck analysis in the manufacturing process. Based on that analysis the optimal future state of the manufacturing process is designed which leads to a production efficiency. This thesis focuses on increasing customer value and reducing waste in manufacturing.
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Preparation and application of PHA based nanofibres and nanoparticles
Linha, Vojtěch ; Skoumalová, Petra (referee) ; Márová, Ivana (advisor)
The goal of this thesis was to summarize basic options of fiber spinning and manufacturing and their usability in industry. Methods of nanofiber spinning are described in the teoretical part, alongside the materials used in experimental part. The experimental part was focused on creating of workflow of defined nanofibers in laboratory enviroment, the possible modification of nanofibers with aditives. The release of aditives from different nanofibers into different enviroments was measured.
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SMS Enterprise Premises
Kopřivová, Nikola ; Šuhajdová, Eva (referee) ; Myslín, Jiří (advisor) ; Čuprová, Danuše (advisor)
The building for small and medium business is located on the outskirts of the city of Brno in Modřice. In close proximity there is a shopping center Olympia, Giga Sport and discount furniture. The building is designed as a compact mass, which is divided horizontally into two different sectors of manufacturing industry and administrative offices. The production hall is vertically extends through the first two floors and part of her administration is appropriate in the southern part of the building. In the northern part of the premises is located warehouses and production supply. The third floor is a separate space for administrative purposes with its own entrance from the eastern part. The building meets the standard for low power consumption and a flat roof can be used to store solar collectors for energy and hot water. Each location in the building is wheelchair solved. The facade is divided horizontally by three colors black, gray and white. Window are designed as french windows vertical contrast to the color of the facade. The building offers maximum versatility, functionality and potential jobs
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