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Design of pneumobil driven by pneumatic motor
Podhorský, Petr ; Robenek, Dětřich (referee) ; Nevrlý, Josef (advisor)
Master thesis deals with design of "student" pneumatic car equipped by pneumatic elements of a chosen firm. The introductory part is devoted to mapping the Hungarian competition. The idea of designing such vehicles comes from this competition. Next step is analysis of vehicles that are present in this competition. The main part describes the development of vehicle from the initial design, through analysis of main components, through to the production and presentation. The work contains a strain-stress analysis of the frame which is made by using the finite element method. The work ends with the conclusion which assesses the results.
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NVH Analysis of Transmissions
Gazda, Silvester ; Zubík, Martin (referee) ; Prokop, Aleš (advisor)
This bachelor's thesis deals with the design of measuring noise and vibration of vehicle transmissions. First describes the main parts of the transmission. This is followed by a description of sources of vibration and noise, and their travel. Significant work is devoted to analysis of the frequency spectrum, of its creation and evaluation. It also includes a description of the measurement and the necessary equipment, along with a description of the basic principles of its functioning.
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Analysis of chain gears production.
Březina, Stanislav ; Zemčík, Oskar (referee) ; Zemčík, Oskar (advisor)
Analysis of chain gears production including comparison and evaluation. Description of particular kinds of chain gears and wheels. Descripton of particular technologies and methods of production of chain gears and comparison of suitability of usage of particular methods, instruments and parameters.
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Project of worm gear for lift mechanism
Otisk, Jan ; Malach, František (referee) ; Malášek, Jiří (advisor)
This graduation thesis dwells on a worm gear design for an elevator mechanism in an already existing wheel case with actuator unit S3 for elevator type BOV 320/0,63. The work includes dimensional and control calculation for the worm gear and as an attachment you will find spiral worm and worm gear drawing documentation, including its specific location.
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Modern methods in spur gearing production.
Kopečný, Libor ; Zemčík, Oskar (referee) ; Zemčík, Oskar (advisor)
The division and comparison of modern methods of production of spur gearings. The introduction is focused on the characteristics and description of cog wheels. Furthermore, the types of gearing and gear mechanisms are introduced. The main part of the text deals with individual ways of a production of spur gearings including finishing methods. The following part of this work describes the importance and possibilities of heat and chemical-heat gearing production. In the last chapters, the evaluation and achieved results of individual technologies of gearing production are introduced.
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Gear Timing Mechanism for Valvetrains
Drdla, Adam ; Rasch, František (referee) ; Novotný, Pavel (advisor)
The objective of this thesis is to provide an overview of geared valvetrain. In introduction are described individual types of gears and their application in combustion engines. Then, the thesis is divided into three chapters. The first chapter provides a thorough analysis of geared valvetrain. Also, individual parts of valvetrain together with alternative methods of valve timing are briefly introduced. The chapter then follows to examine the working principle of gears, how forces and moments are transmitted, advantages of introducing helical gears instead of spur gears, different ways of gear manufacturing, gear material selection, heat treatment of gears and common gear failure mechanisms. The second chapter examines pros and cons of using geared valvetrains. The third chapter shows examples of how are geared valvetrains applied in tractors, trucks, ships, trains, cars and motorcycles. In the conclusion, the main advantages of using geared valvetrains are discussed and the whole thesis is summerized.
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Gear failures
Paška, Josef ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
This bachelor thesis is focused on gears. The first part of the thesis informs about the sorting of each type of gears. In the second part, there is a detailed overview of possible gears failures, including their causes, manifestation and their potential solutions for correction. The last part of the thesis handles technical experiment, which aims to performance of vibrodiagnostic of the gear system, tested on the test state. Measured data were subsequently processed by commercially accessible software, where the vibrations of transmission were recorded – firstly at the beginning of measuring when the gears were without damage and afterwards at the end of testing, when the state of damaged teeth was detected.
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Gearbox for portable power generator
Kolka, Roman ; Hubáček,, Tomáš (referee) ; Bradáč, František (advisor)
The submitted project deals with a complete design of a gearbox of a portable ground power generator designed for preflight preparation of helicopters. The gearbox has been designed to meet given specifications, which are based on required electrical parameters of the entire power unit and with regards to parameters of driving turbine engine. The introductory section deals with a kinematical design of transmission gears with regards to required parameters and design constraints. The kinematical design determines whole concept and resulting form of the gearbox. Next part deals with optimization of gearing, the design of wheel bearing, and design of oil system. The implementation part of the project consists in the engineering design of the gearbox, which was made in 3D environment Pro/Engineer. The design is reviewed and first operational results of manufactured and tested gearbox are discussed in the concluding section of this work.
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Description of CNC gearing machines
Matuška, Martin ; Holub, Michal (referee) ; Blecha, Petr (advisor)
This work dissert on gearing production and about machines for it. Here is analyse technique and technology production particular sort of gearing and post-allocation producers of machines for given mothod. For each given machine is mentioned basic description and the most important technical parameters. This work describe topical world production gearing machines.
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