National Repository of Grey Literature 6 records found  Search took 0.01 seconds. 
Optimisation of Selected Technological Processes in the Production of Bearing Components
Otoupalík, Jan ; Čep, Robert (referee) ; Sadílek, Marek (referee) ; Kouřil, Karel (referee) ; Chladil, Josef (advisor)
The dissertation is focused on the optimization of technological processes in the production of the outer bearing ring. The first part of the research was focused on the latest trends in the production of bearings. In the experimental part the technological processes of production were analyzed from the choice of the semi-finished product to the optimization of finishing technologies for machining the outer diameter of the bearing ring.
Design of electrical travel of reaper`s drive unit
Otoupalík, Jan ; Černý, Michal (referee) ; Koutný, Daniel (advisor)
This bachelor thesis focuses on the design of electrical travel for universal mowing machine, which will be controlled remotely. Designed travel has independent wheel drive, the maximum speed of 10 km per hour and can be used in the terrain with a slope of 30°. The thesis deals with the determination the parameters of the travel, design of the possible electrical drive units and design with respect to the stability of the device. Another part of the thesis deals with the design of the travel and describes particular parts of the travel.
Vibration of rolling bearing
Otoupalík, Jan ; Ripel, Tomáš (referee) ; Krejsa, Jiří (advisor)
The thesis deals with vibrations caused by geometric defect and fatigue damage of rolling element bearing. Hardware for vibration measurement is tested on 25 new pieces of NJ 304. Second part of the thesis examines if measuring of bearing vibration can help to detect a geometric defect. Geometric defects are detected according to a spectrum of vibration but the results are not absolutely exact. The possibility to detect geometric defects by measuring vibration has not been proven. The end of project tests diagnostic methods for rolling element bearings. The bearing defect was simulated to demonstrate bearing failure frequencies, envelope method and vibration spectrum.
Optimisation of Selected Technological Processes in the Production of Bearing Components
Otoupalík, Jan ; Čep, Robert (referee) ; Sadílek, Marek (referee) ; Kouřil, Karel (referee) ; Chladil, Josef (advisor)
The dissertation is focused on the optimization of technological processes in the production of the outer bearing ring. The first part of the research was focused on the latest trends in the production of bearings. In the experimental part the technological processes of production were analyzed from the choice of the semi-finished product to the optimization of finishing technologies for machining the outer diameter of the bearing ring.
Vibration of rolling bearing
Otoupalík, Jan ; Ripel, Tomáš (referee) ; Krejsa, Jiří (advisor)
The thesis deals with vibrations caused by geometric defect and fatigue damage of rolling element bearing. Hardware for vibration measurement is tested on 25 new pieces of NJ 304. Second part of the thesis examines if measuring of bearing vibration can help to detect a geometric defect. Geometric defects are detected according to a spectrum of vibration but the results are not absolutely exact. The possibility to detect geometric defects by measuring vibration has not been proven. The end of project tests diagnostic methods for rolling element bearings. The bearing defect was simulated to demonstrate bearing failure frequencies, envelope method and vibration spectrum.
Design of electrical travel of reaper`s drive unit
Otoupalík, Jan ; Černý, Michal (referee) ; Koutný, Daniel (advisor)
This bachelor thesis focuses on the design of electrical travel for universal mowing machine, which will be controlled remotely. Designed travel has independent wheel drive, the maximum speed of 10 km per hour and can be used in the terrain with a slope of 30°. The thesis deals with the determination the parameters of the travel, design of the possible electrical drive units and design with respect to the stability of the device. Another part of the thesis deals with the design of the travel and describes particular parts of the travel.

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