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Compact transmission
Richter, Vojtěch ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
This bachelor thesis focuses on compact transmissions. The motive of the thesis is to review modern gearbox concepts. It describes special gearboxes that are compact in design, e.g.: worm gearbox, planetary gearbox. The focus is on the environment in which they operate, the input speed, the magnitude of power transmitted, the weight and dimensions of the gearbox. Machines that can be included in this group and operate with compact gearboxes are aircraft engines, wind turbines, industrial robots or small portable machines and medical devices. The work includes the design of a gearbox for a car winch. It is a three-stage planetary gearbox and 7 variants have been calculated. The required parameters were a maximum gearbox diameter of 100 mm and a minimum thrust of 1500 kg. Furthermore, an electric motor was defined. Subsequently, the best gearbox design was selected with a gear ratio of 1:144, a diameter of 92 mm, a width of 35 mm and a thrust of 1503 kg.
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Design of a planetary gearbox of an RC model produced by the 3D printing
Rada, Jan ; Rekem, Jakub (referee) ; Otipka, Václav (advisor)
This bachelor’s thesis deals with the design of a planetary gearbox produced by 3D printing. The first part is focused on research in the field of current technologies and 3D printing materials. The production process for FDM technology and the theory of planetary gears are described here. The second part is focused on the design of the gearbox to meet the input parameters so it could be produced by 3D printing. The design process from the calculation through modelling to the actual printing of the gearbox is described here.
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Battery supplied lawn mower
Picmaus, Jan ; Martiš, Jan (referee) ; Vorel, Pavel (advisor)
The thesis deals with a concept of turning a conventional petrol powered lawn mower to a battery powered solution which is powered by lithium cells. A division to three chapters, comparison, mechanical and electrical, provides fluency of the whole design and further realization. The arrangement of chapters is performed so that the continuity of the thesis is maintained. Calculations of parameters of every motor and transmission with choosing particular devices are just a part of much interesting information which can be found in this thesis. All new components have full documentation except those which were changed during manufacturing. The electrical part explains every part of the schematics in detail. The realization contains difference between preliminary design and further production, manufacturing of the PCB and powering up the motor drives. The last part of the thesis contains temperature measurements of the device at no load.
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Development of transmission
Kocman, František ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
This bachelor thesis is focused on current trends of passenger car transmissions. The goal was to compile an overview of individual concepts with regards to the current trends. For each concept, there is a description of its construction and principle. The practical part is focused on the calculation of the basic parameters of a dual clutch transmission.
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Design of spindlespeeder
Závada, Otakar ; Pavlík, Jan (referee) ; Tůma, Jiří (advisor)
This bachelor thesis deals with conceptual design of high speed spindle based on cutting conditions. Research part of thesis describe each types of high speed spindle based of their drive. Next chapter are documented cutting conditions which are corresponded with experience. High speed spindle faced these act most of the time. Cutting conditions show output conditions of planetary gearbox which is described in next part of thesis. All the experience are used in conceptual design. The drawings contains of assambly drawing and drawing of selected components. The drawings are based on model made in 3D CAD system
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Press LKJP 250
Dvorník, Milan ; Dokoupil, Vladimír (referee) ; Omes, Jiří (advisor)
This Master thesis deals with the design concept of press drive of LKJP 250 press with planetary gearbox. It is a single one-point crank universal press, which is designed for cold-forming operations. The press is used for operate in single stroke mode or continuous operation when engaged in an automatic press line. The first part of the thesis deals with the research in the field of mechanical crank press drives arrangement and kinematic analysis, followed the description of the main parts of the press drive. The second part of the thesis deals with the design of the press drive. The solutions are suggested in several possible options with performing basic calculation. On the basis of the required criteria, the most suitable variant is chosen, for which detailed design and control calculations of individual design nodes of the press drive are performed. Part of this thesis also includes the required technical drawing documentation of the mechanical press.
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Production of planetary gear set model on 3D FDM printer
Magdon, Jan ; Prokeš, Tomáš (referee) ; Zemčík, Oskar (advisor)
This Bachelor's Thesis is looking into designing of a planetary gearbox then subsequent production with using the Fused Deposition Modeling (FDM) technology. The first part describes the production process using additive technologies, focusing mainly on FDM technology with properties of materials used in this method, then the theory of planetary gears with their practical use. The second part is devoted to production of model planetary gearbox, which is designed with regard to possibilities of FDM printer. Single parts were designed in 3D programme Autodesk Inventor Professional 2016. Finally the product is evaluated technically and economically.
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Gearbox with Gears Changing on Load
Formánek, Pavel ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
This bachelor work is focused on analysis of structural arrangements, technical and operating parameters of a gearbox with gear changing on the load. First part of this work is devoted to gears distribution, their gear change and the ways of gear change. The following part describes various structures of gearboxes, their principle and control. The summary evaluates advantages and disadvantages of the gearboxes and describes estimation of following development in this field.
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Design of a boring head for a drill
Hradský, Martin ; Tůma, Jiří (referee) ; Kočiš, Petr (advisor)
The bachelor thesis, which belongs to the field of machine tool tools, deals with drilling. The thesis is divided into a search section where a review of the drill head is processed and the practical part in which the design of the drill head is made. This is particularly the head with an eccentric spindle, the movement of which on the circle will be a milling cutter that will cut the hole. The result of the design is a drill head, which consists of a two-stage planetary gear, a toothing and a toothed belt drive.
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Turn - over positioning table
Mareček, Vojtěch ; Dokoupil, Vladimír (referee) ; Foller, Bronislav (advisor)
This diploma thesis deals with projection and general design of rotary indexing table for dedicated machine tools. The major attention is given to substitution of hydraulic drive table by table driven by servomotor, namely double axis its positions in vertical and horizontal directions. The total configuration of rotary table is solved as a construction kit, user can used any servomotor and additive gearbox. The work is concentrated to the optimization of table construction for this new designed conception. The positioning and fixing of table plate is solved by couple of Hirth couplings with central hydraulic motor. The computational part of work includes calculations of dynamic of rotary motion of the table and hydraulic system. All important screw connection, gear wheels and Hirth couplings were verified by calculations. Also working lifetime of bearings and strength deformation of major constructional sections of rotary table verification were controlled. Inherent part of work is security analysis, economics analysis, patent search and analysis of construction identity. Presented work contains three-dimensional model, drawing documentation of both variants of configurations and production drawing of major section parts of rotary table.
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