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Design of technology for gear manufacturing
Urbánek, Michal ; Píška, Miroslav (referee) ; Sliwková, Petra (advisor)
The master’s thesis is focused on the design of production technology and the choice of machines and tools to achieve the required accuracy according to the drawing documentation. During the design of production options, the advantages and disadvantages of gear machining variants were described. In the theoretical part, the technologies of the proposed operations were described, such as turning, milling of gears in a rolling method, shaving and grinding. In the practical part, the production itself is described in all sixteen operations that were needed to produce the part. Instructions and tables of measured dimensions were created for each machine operation. The economic evaluation summarizes material costs, machine and preparation times depending on the size of the production batch.
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Design of gearbox for wind power plant
Zavadil, Roman ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
The main goal of this diploma thesis is the design of a gearbox for a wind power plant. The introductory part contains a set of knowledge about wind turbine gearboxes and introduces the reader to the issue in terms of the distribution of gearboxes, gears used, recommended bearings and in terms of wind turbine generators. The design itself begins with determining the input parameters of the transmission based on a simplified aerodynamic model of the wind turbine rotor. Further, using these parameters, a device arrangement consisting of two planetary gears and one permanent gear. The entire transmission is examined in terms of kinematics, and in both planetary gears, the kinematic examination is performed using the Willis method. Then, the helical gearing is designed and its normal modulus, geometry, forces are calculated and lastly the strength calculation of the gearing is performed. Then the durability of the bearings is calculated based on a force analysis and the patented flexible pin construction is checked regarding its bending and deflection. The housing of the entire device is constructed regarding the smallest possible installation space in the control room. The final part of the work is devoted to the strength control of the bolts at the first ring gear using the finite element method and modal analysis of the entire gearbox also using the FEM.
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Conceptual design of a polymeric gear tester in vacuum
Ptáček, Matyáš ; Šperka, Petr (referee) ; Černohlávek, Mikuláš (advisor)
The bachelor thesis deals with the conceptual design of a polymeric gear tester in vacuum. Using a test device, it is possible to test the coefficient of friction in gears. At the beginning of the work is described the issue of operating conditions of satellites in low orbit together with the effects that affect them. Subsequently, suitable polymeric materials are selected, and current publicly available test rigs are described. Based on the research, two conceptual designs are made, one of them is selected and described in detail at the end of the work.
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Multi-Body Computational Modeling of Transmission Dynamics
Líčeník, Adam ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
This diploma thesis is focused on compiling a computational model of the transmission of a Zetor Forterra HSX tractor in the Multibody software MSC ADAMS environment. It analyses the issue of creating gears in terms of vibration and noise. The thesis describes the creation of computational model which is used for simulation of the load conditions during tractor operation. The methodology is applied to a single-stage gearbox in which is verified. Then it is used on a model of a real tractor gearbox. The response of the input load conditions is projected during the forces in the engagement of the gears which are transmitted to the bearings.
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Characteristic of vehicle’s differential
Málek, Tomáš ; Kupčák, Radim (referee) ; Ohnišťová, Petra (advisor)
This bachelor thesis deals with characteristic of various types of differentials in motor vehicles. It represents their functions, various designs and comparisons. It also includes all wheel drive chapter. The main part is the technology of gear production which involves 3D print. There is model of differential, which was created in Solid Works 2016 specifically for this thesis. It is also printed on 3D printer and the printout is compared with a real model of differential.
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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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Multifunction gear cutting machine
Danda, Libor ; Šmérek, Petr (referee) ; Brandejs, Jan (advisor)
Diploma thesis deals with the design of a small, computer-controlled machine tool. It is used for gearwheels production and combines the two most used manufacturing methods. The dissertation was dealt with in cooperation with a business subject which focuses on the development of milling machines. The introductory section is discussing research of current state of knowledge and market research focused on gearing machine tools, including patent investigation. The conceptual solution is discussing several variants of the cinematographic arrangement of the axes from which the final design solution was developed. This is described in detail in the second part of the dissertation. It contains description of individual construction complexes, choice of propellant units, modal analysis of sliding systems using the method of finite elements and in the conclusion the electronic part of the machine with its overall shape solution.
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Sinumerik 840D control system for turning of the shaft for JAWA 23
Motl, Martin ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
This Master’s thesis deals with the proposal manufacturing technology of a shaft with gears on a CNC machine tool. The first part of the thesis is focused on the concise description selected shaft and its use. In the next part of the thesis are state selected materials, which are suitable used for shafts and gears. After that is create drawing component, suggest technological procedure, tool list and machine list which are suitable used for manufacturing selected shaft. In the final part of the thesis is create a CNC program for manufacturing the shaft on the turning and milling machine. Program is created in software SinuTrain 4.7 for control system Sinumerik 840D. The CNC program is verified by graphics simulation to determine a correct function
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