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On the production of a shaft for agricultural machinery drive
Tenora, Tomáš ; Prokop, Jaroslav (referee) ; Píška, Miroslav (advisor)
The subject of the assigned bachelor’s thesis is to analyse the production technology for shaft agricultural machinery drive. After analysing the technical documentation, the thesis includes the analysis of current production conditions in the company. The main goal of the thesis is to design a technology of components, specified in terms of more efficient production, which includes six alternative technologies in total. Sub-variants are calculated and graphically displayed. To innovate the production process there are recommended variants of usage of multi-machine operator, change of machine tools and change of technological processes. Thanks to it the significant cost savings are achieved.
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Cutting operation
Petruška, Jakub ; Mouralová, Kateřina (referee) ; Kalivoda, Milan (advisor)
The present bachelor`s thesis summarizes chip machining theory. The initial part defines history, basic concepts and possibilities of recycling. The next section describes the technological preparation of production and its automation. This also follows the practical part of computer-controlled machine tools. Here is discussed the calculation procedure and creation of CNC programs for CNC lathe.
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Machining of components on CNC machines
Osička, Petr ; Mouralová, Kateřina (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis deals with the manufactory of the rotor for the electric motor on the CNC lathe. The first part describes the function and design of manufactured constituent part. The next chapter designes and describes production process of machining the shaft and next steps of manufactory are described. They basic production capacity calculations are made. In the next part the NC program is designed, which is used to manufacture the shaft as a model product.
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Machining of long cylinders
Nádvorník, Vít ; Jaroš, Aleš (referee) ; Fiala, Zdeněk (advisor)
The bachelor thesis deals with the machining of long cylinders and production machines used for the machining technology. The main part contains a description of the vibration system of machine-tool-workpiece and analyzes active and passive methods of its elimination. It also deals with the wear of the cutting tool and a description of the parameters which have a direct effect on tool life.
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Influence of cutting conditions on durability of cutting inserts during turning
Hynčica, Vojtěch ; Fiala, Zdeněk (referee) ; Jaroš, Aleš (advisor)
The aim of present thesis is to determine the influence of the cutting conditions (the cutting speed, the feed, the depth of cut) on wear and durability of cutting inserts during machining process of the Inconel 718 alloy. In theoretical part thesis describes technology of turning, cemented carbides, their production and coating; it also deal with how the wear of the tool arises and how the tool wear progresses. In experimental part of this thesis we describe the cutting material, the machine, the machine tool and the experiment procedures. Measured values showed, that the durability of cutting inserts decreases depending on the cutting speed. We have determined that there is no direct correlation between the tool wear and the (increasing) level of the feed and the depth cut.
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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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Kinds and types of cutting heads
Dozbaba, Zdeněk ; Marek, Jiří (referee) ; Marek, Tomáš (advisor)
The thesis deals with the sorting of cutting heads. The first part contains a summary of information about cutting of metals, next part describes the CNC machining centers. The sorting of cutting heads and a description of one specific CNC machining center and respective machining head follow.
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Cutting operation in condition a small firm
Hejtmánek, Pavel ; Sedlák, Josef (referee) ; Kalivoda, Milan (advisor)
This work is focused on standard methods of machining (turning, milling, drilling). The aim is to know the background of smaller companies and give a specific technological situation in relation to the terms of the assessment. The first part focuses on the technology of turning; it describes the distribution and usages of machine tools. The second and the third parts deal with the milling and drilling technologies that have similar content character as the area of turning. The final part of work solves technological situation in the company Kratochvíl Ladislav Kovoobráběčství and the situation is examined from several perspectives.
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