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Design of climatic chamber
Novák, Petr ; Šperka, Petr (referee) ; Frýza, Josef (advisor)
This bachelor thesis deals with the construction of climatic chamber, which allows continual change of temperature of air within the range of -10 to 50 °C and continual change of relative humidity of air within the range of 10 to 90 %. The chamber is going to be connected to optical tribometer or to Mini Traction Machine (MTM). Both these devices serve for observation of tribological processes in laboratory conditions. Climatic chamber is going to approximate these laboratory conditions more to the real ones by the modification of temperature and air humidity. In the thesis there is stated a concept of particular climatic units, a concept of the arrangement of these units and consecutive constructional solving of the whole device with the emphasis on simple construction, low charges of production, assembility and small proportions of the whole construction
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Reconstruction of Polishing Apparatus
Kotiza, Tomáš ; Šperka, Petr (referee) ; Svoboda, Petr (advisor)
This thesis is focused on a reconstruction of polishing machine for sphere objects which is located in laboratories of Institute of Machine Design Brno University of technology. The first part of the thesis contains a brief summary of existing polishing machines with description of their basic principles. The other sections discuss polishing, bearing balls, drives for this machines and surface roughness. The second part is dedicated to construction designs for reconstruction of the polishing machine. In the final part is chosen optimal variant which is well suited for requirements on functionality, efficiency and production simplicity.
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Sliding Bearing Apparatus
Sabo, Karol ; Šperka, Petr (referee) ; Hartl, Martin (advisor)
The bachelor’s thesis concerns with a design of experimental apparatus for a film geometry detection in hydrodynamic lubrication thrust bearing using optical interferometry. The thesis includes the current state of knowledge about experimental apparatus using optical interferometry, engineering design and drawings of design apparatus
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Cam-follower contact
Urban, Filip ; Zimmerman, Martin (referee) ; Šperka, Petr (advisor)
This bachelor thesis deals with construction design of a cam-follower contact simulator. At the beginning of the thesis there is a brief overview of cams, forces acting in valve train system and types of cam-follower contact wear. There is also review of other apparatuses developed for cam-follower contact research. Main part is devoted to construction design, variants of design and calculations.
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Design of rail vehicle sanding systems
Balounová, Hana ; Šperka, Petr (referee) ; Hartl, Martin (advisor)
The bachelor thesis deals with creating an overview of sanding systems, which are available on the marketplace in terms of their construction. Sanding devices are used in rail transport to incerase the adhesion during braking and moving off in bad weather condition. The thesis inculdes findings of testing influences of construction on the quality of sanding, list of companies producing sanders and their products and defining the future development trends.
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Positioning table for 3D optical profiler.
Kuruc, Marek ; Prokeš, František (referee) ; Šperka, Petr (advisor)
This Bachelor thesis deals with design and technical elaboration of positioning table for a 3D optical profiler, which is supposed to enable linear translation in two axes and tilting in two identical axes. Research of contemporary available solutions is made. Design priorities are precision of translation and tilt adjustment and achieving as low structure as possible.
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Effect of lubricant rheology on lubrication film thickness.
Prášilová, Alena ; Šperka, Petr (referee) ; Křupka, Ivan (advisor)
Lubrication is a very important part of mechanical engineering, which ensures high lifetime of machine parts, reduction of friction and wear and also it leads to decreasing of power consumption. In this bachelor`s thesis there is described rheology of newtonian and non-newtonian lubricants and its effect on lubrication film thickness. Measured central film thickness values are compared with theoretical prediction.
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