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Planetary, cycloidal, worm, screw, harmonic gearboxes
Čišecký, Damián ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
This bachelor's thesis focuses on planetary, cycloidal, harmonic, screw and worm gearboxes, providing an insight into the design, calculations and applications of these mechanisms in the transmission of mechanical energy. It contains clear schematic drawings, construction documents and calculations of transmission ratios, with an emphasis on current manufacturers and technical parameters.
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Computational Modelling of the Automotive Gearbox Dynamics Using Multi-Body Approach
Suchý, Pavel ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
The thesis deals with construction of a computational model of the manual automotive gearbox MQ281 in MSC ADAMS View software, on which several static and dynamic operating states of the gearbox are simulated. The input for the MBS model construction is the CAD assembly of the gearbox in necessary detail and parameters of all gears. The computational model uses a custom model of bearings and the engagement helical spur gears based on the transmission error. The outputs of the simulations are courses of forces and moments acting in bearings, gears and synchronizing clutches, courses of shafts deflection, courses of angular velocities of shafts and gears, frequency analysis of operating states.
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Gear production design
Rusková, Marie ; Lidmila, Zdeněk (referee) ; Podaný, Kamil (advisor)
The thesis deals with the design of a gear, which is located on the rear half-axle of the tractor. Due to the high torque transmission, it will be made of 12 061 steel. After assessing the various production technologies, the forging on the vertical crank press were chosen as the most optimal. Forging was designed according to the standard ČSN 42 9030. The semi-finished product is going to be a rod with a diameter of 125 mm, which will be divided by cutting to a length of 219 mm. Forging will take place in three operations. Based on the highest calculated required force, which came out to 63.16 MN, the LZK 6500 machine was chosen. An LDO 315 A/S trimming press will be used to remove the protrusion and membrane.
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Sewing machine part manufacturing process
Švec, Michal ; Jaroš, Aleš (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis focused on the production of a gear which is part of the sewing machine. In the first part is the gear wheel analyzed, including the description of his function. There is also a selection of the semi-product is described, including the calculation of the required amount of material. The following section describes the machines needed to manufacture the component, the tools which will be used during production and the technological process. In the next part is mentioned the system of spare parts in the company, the possibility of claiming or purchasing individual parts of sewing machines. The last part of the thesis is devoted to the technical and economic evaluation of the proposed production.
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Design of production technology for a pinion shaft of a gearbox
Hulvej, Matúš ; Slaný, Martin (referee) ; Zemčík, Oskar (advisor)
The diploma thesis presents a design of a technical project: design of production technology for a pinion shaft of a gearbox and design of alternative technology. It focuses on the analysis of a component, the selection of materials, machines and tools, and the creation of a manufacturing drawing and technological process of the production. It is concluded by a technical-economic evaluation, based on which are both designs compared and evaluated which design is better for specific conditions.
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Production of gears model on FDM printer
Frátrik, Michal ; Dvořák, Jaromír (referee) ; Zemčík, Oskar (advisor)
This bachelor thesis deals with an issue of 3D printing of gears. In the first part are concisely summarized processes of 3D printing, selected types of Rapid Prototyping considering the FDM and properties of materials used in this method. The second part deals with a suggestion of gears model based on the gearbox of the kitchen blender. Gearbox was designed in 3D modeling program Autocad inventor 2013 and printed on the Reprap printer Sinuhed. There is techno-economic appreciation of production of the model in conclusion.
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Efficiency Improvement Proposal of Machining Process of Inner Gearing
Hoffmann, Jiří ; Chladil, Josef (referee) ; Sedlák, Josef (advisor)
The subject of this study is a proposal to streamline the production process of gear with internal gear. At the beginning of the thesis are described some types of gearing. The second chapter is focused on the analysis of manufactured part and workplaces for production. The third chapter contains description of technological methods of gearing production by conventional and unconventional methods. The main point of this work is a proposal of innovation of the production process of gearing production. In conclusion, technical-economic evaluation including a comparison of existing and newly designed solutions.
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Design of the device for research on lubrication of gears
Žáček, Jan ; Hartl, Martin (referee) ; Svoboda, Petr (advisor)
The master´s thesis is focused on the design and implementation of the laboratory stand for studying lubrication of gears. Specifically, to assess the effect of lubricant contamination on gears. The device uses the Niemann closed circuit concept which in practice is called „back to back“. Firstly, in the theoretical part, the test circuits uses for testing gears are described and one of the standardized procedure for experimentation is presented. Based on research studies, basic parameters for the design and creation of conceptuals are determined. The practical part consists not only the design of this stend, but also including test run and the description of the procedure on that device. The result of this master´s thesis is the functional experimental device for the future development of intelligent lubrication systems.
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Transmission of HPV
Martinát, Antonín ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
This diploma thesis concerns the design proposal for a bicycle gearbox powered by human force. The first part summarizes the existing solutions. The second part includes the proposal of the new design, together with the calculation of the strength for selected parts. Attached are the drawings documenting the findings.
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Continuous vertical conveyor for transport the goods
Zálešák, Martin ; Bukovský, Radim (referee) ; Kašpárek, Jaroslav (advisor)
This diploma thesis deals with the existing of transportation unit products and designing of a better conceptual solution of continuous elevator with fixed section of a gravity and roller conveyor. This type of conveyor is specified mainly for the transport of boxed products from the lower floor to the another. The diploma thesis is substantiate by the proposal of assemblies machines. It includes a complete 3D design, engineering and functional solution that is supported by basic strength and the check calculations. The attachments consist of the drawings of the proposed facility.
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