National Repository of Grey Literature 8 records found  Search took 0.00 seconds. 
Vibration at machining of metals - reasons and remedies
Sismilich, Vladimír ; Kouřil, Karel (referee) ; Píška, Miroslav (advisor)
This diploma thesis is concerning about summarizing and describing types of vibrations, their causes and influences to the machining. The stable conditions of machining were pointed out. The experiment was conducted in which the frequency response function of specific milling machine was measured. Than the stability lobe diagram was constructed.
Vibration at milling of metal
Dvořák, Jan ; Štetina, Jakub (referee) ; Fiala, Zdeněk (advisor)
This thesis contains theoretical description of milling, mathematical description of oscillation and causes of self-excited vibrations during the milling process. It further contains dynamic measurement of machine-tools and stability lobe diagram. At last it states different ways of prevention, removal or maximum reduction of self-excited vibrations during the milling process.
Vibration at turning
Procházka, Luděk ; Kolář, Ladislav (referee) ; Fiala, Zdeněk (advisor)
This thesis deals with vibration which occurs during the cutting process in turning. It describes vibration, types of vibration and its causes. It also provides a basic description of the turning technology. The main part of the thesis is a description of self-excited vibrations, an unwanted phenomena in the turning process, which needs to be eliminated or reduced. The experimental section of the thesis aims to measure natural frequencies of the machine-tool-workpiece system and to create a stability diagram for this process.
Computational modelling of self-excited oscillation during metal cutting
Malý, Pavel ; Hadaš, Zdeněk (referee) ; Švancara, Pavel (advisor)
Diplomová práce se zabývá analýzou produktivity a efektivity řezného procesu frézování. Pro zjištění kritické hloubky třísky byla analyzována reálná frézka. Model frézky byl vytvořen v programu Autodesk Inventor. Analýza řezného procesu probíhala v programu Ansys Workbench. Výsledky byly použity pro sestavení stabilitních diagramů. Po vyhodnocení výsledků byly navrženy dva přístupy pro zefektivnění procesu frézování. Vliv těchto změn na produktivitu řezného procesu byl ověřen porovnáním výsledků s předchozí analýzou.
Computational modelling of self-excited oscillation during metal cutting
Malý, Pavel ; Hadaš, Zdeněk (referee) ; Švancara, Pavel (advisor)
Diplomová práce se zabývá analýzou produktivity a efektivity řezného procesu frézování. Pro zjištění kritické hloubky třísky byla analyzována reálná frézka. Model frézky byl vytvořen v programu Autodesk Inventor. Analýza řezného procesu probíhala v programu Ansys Workbench. Výsledky byly použity pro sestavení stabilitních diagramů. Po vyhodnocení výsledků byly navrženy dva přístupy pro zefektivnění procesu frézování. Vliv těchto změn na produktivitu řezného procesu byl ověřen porovnáním výsledků s předchozí analýzou.
Vibration at milling of metal
Dvořák, Jan ; Štetina, Jakub (referee) ; Fiala, Zdeněk (advisor)
This thesis contains theoretical description of milling, mathematical description of oscillation and causes of self-excited vibrations during the milling process. It further contains dynamic measurement of machine-tools and stability lobe diagram. At last it states different ways of prevention, removal or maximum reduction of self-excited vibrations during the milling process.
Vibration at machining of metals - reasons and remedies
Sismilich, Vladimír ; Kouřil, Karel (referee) ; Píška, Miroslav (advisor)
This diploma thesis is concerning about summarizing and describing types of vibrations, their causes and influences to the machining. The stable conditions of machining were pointed out. The experiment was conducted in which the frequency response function of specific milling machine was measured. Than the stability lobe diagram was constructed.
Vibration at turning
Procházka, Luděk ; Kolář, Ladislav (referee) ; Fiala, Zdeněk (advisor)
This thesis deals with vibration which occurs during the cutting process in turning. It describes vibration, types of vibration and its causes. It also provides a basic description of the turning technology. The main part of the thesis is a description of self-excited vibrations, an unwanted phenomena in the turning process, which needs to be eliminated or reduced. The experimental section of the thesis aims to measure natural frequencies of the machine-tool-workpiece system and to create a stability diagram for this process.

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