|
|
Behaviour of lubricated contacts under high-sliding conditions
Adam, Jakub ; Vimmr, Jan (referee) ; Omasta, Milan (advisor)
The aim of this diploma thesis is to describe the influence of individual operating parameters on thickness and temperature distribution of elastohydrodynamic contact under high slip ratio. In this work, the distribution of the lubricant film thickness is determined by optical interferometry and the temperature mapping in EHL contact is realized by infrared microscopy. Two optical filters were used to separate the radiation of contact surfaces and oil. Temperature of disk surface was measured using a sapphire disk with chromium layer that shielded radiation from ball and oil. The experimental device was modified to simulate the conditions of the various vectors between entrainment and sliding speed. The results extend existing information about behavior of EHL contact under high slip ratio conditions.
|
|
|
Production single parts from sheet metal
Nutilová, Marcela ; Peterková, Eva (referee) ; Žák, Ladislav (advisor)
The project drawn up within the framework of engineering studies in discipline Manufacturing technology (2303T002) presents a proposal for processing a single part – the part is made of sheet steel number S420MC – by blanking, bending and stamping. On the basis of a literary exploration of given problems several variants of processing a part was propounded in order to be made in just one tool. The transfer combined die is fixed in crank press WAINGARTEN ARP 80 with 800 kN nominal force. All functional parts are made of heat treated tool steel number 19 573.3 according to drawing documentation. Lower functional parts of tool (blanking die, stamping die and bending tool) are made as divided.
|
|
|
Behaviour of lubricated contacts under high-sliding conditions
Adam, Jakub ; Vimmr, Jan (referee) ; Omasta, Milan (advisor)
The aim of this diploma thesis is to describe the influence of individual operating parameters on thickness and temperature distribution of elastohydrodynamic contact under high slip ratio. In this work, the distribution of the lubricant film thickness is determined by optical interferometry and the temperature mapping in EHL contact is realized by infrared microscopy. Two optical filters were used to separate the radiation of contact surfaces and oil. Temperature of disk surface was measured using a sapphire disk with chromium layer that shielded radiation from ball and oil. The experimental device was modified to simulate the conditions of the various vectors between entrainment and sliding speed. The results extend existing information about behavior of EHL contact under high slip ratio conditions.
|
|
|
Production single parts from sheet metal
Nutilová, Marcela ; Peterková, Eva (referee) ; Žák, Ladislav (advisor)
The project drawn up within the framework of engineering studies in discipline Manufacturing technology (2303T002) presents a proposal for processing a single part – the part is made of sheet steel number S420MC – by blanking, bending and stamping. On the basis of a literary exploration of given problems several variants of processing a part was propounded in order to be made in just one tool. The transfer combined die is fixed in crank press WAINGARTEN ARP 80 with 800 kN nominal force. All functional parts are made of heat treated tool steel number 19 573.3 according to drawing documentation. Lower functional parts of tool (blanking die, stamping die and bending tool) are made as divided.
|
guest ::
