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Electroerosion machining of materials used in the aerospace industry
Zubáková, Alexandra ; Mouralová, Kateřina (referee) ; Kalivoda, Milan (advisor)
This diploma thesis deals with the issue of electroerosion machining of materials used in the aerospace industry. The introductory part presents the layout of aerospace materials and the methods by which they can be machined. The next chapter describes the basic principles of EDM. The experimental part is focused on electroerosive cutting of NIMONIC 263 alloy. The greatest emphasis was placed on determining the influence of the cutting wire material on the rate of contamination of the surface layer of the workpiece. The quality of the machined surface was assessed depending on the used wire and the selected machining parameters.
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Production of fibreglass laminate parts
Nenov, Stanislav Stojanov ; Kalivoda, Milan (referee) ; Mouralová, Kateřina (advisor)
Bachelor´s thesis is specialised in production of the fiberglass part in the company Composite Components, a. s. In the introductory part the company and shortly its history and production is introduced. In the next parts composites and their dividing are described with specialisation in input materials for fiberglass production and different production technologies. Concrete producing part is described from the period of recieving the data for production of the model and moulds to production of the part. With modification of the production technology production effectiveness is achieved, which is reviewed in the technical-economic evaluation.
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Conversion of manually controlled milling machine into CNC
Orság, Petr ; Zahradníček, Radim (referee) ; Mouralová, Kateřina (advisor)
In the first part of this thesis, there is a short research dealing with modernization of old-type machines. There is also given a description of main types of milling machines. The next part includes characterization and parameters of the milling machine, that is the subject to the thesis. There are to be found designes and calculations of selected units in the following part. In consideration of the character of the thesis there are not given calculations of all units. The last part deals with economical evaluation.
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Trends in use of non-conventional technology for electrical discharge machining.
Mouralová, Kateřina ; Prokop, Jaroslav (referee) ; Osička, Karel (advisor)
The aim of this dissertation are future trends of electrical discharge machining in conditions of a small tool factory. In the introduction is presented the theory of non-conventional machining. The practical part is focused on valuation the current level of electrical discharge machining, the importance of the use in a tool Nástrojárna Ryšavý. It also compares the level of leading global manufacturers of electrical discharge machines and future trends of electro-discharge technology.
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Electroerosive sinking of technical ceramics
Kudrna, Tomáš ; Mouralová, Kateřina (referee) ; Osička, Karel (advisor)
The master’s thesis deals with the topic of electrical discharge machining. The first part of the thesis contains a study of the die-sinking EDM. The die-sinking EDM of the silicon carbide ceramic is realized in the experimental part of the thesis. The result of this work was to explore the influence of the EDM sinking parameters, specifically pulse current, open-voltage and pulse on-time, on the machined surface. Furthermore, the analysis of the tool electrode was made. This analysis was focused on the wear in the corners, which has key influence on accuracy of the machining. The machining time was also examined.
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Design and ergonomics of hand tools
Sovják, Richard ; Prokeš, Tomáš (referee) ; Mouralová, Kateřina (advisor)
The diploma thesis is focused on the analysis of the power tools ergonomics and also on the economic impact on a sick employee in the Czech Republic. It presents the results of the characteristics of hand tools in terms of their design, usage positions and handling. It introduces current legislation and ergonomic methods, including the newly designed visual tool AAL. The tool enables ergonomic analysis of positional rotation of the limbs, torso and neck, including the input of strength and muscle parameters. AAL is integrated into Excel software with the possibility of integrating data from Rhinoceros software and the Grasshopper module, which automatically generates data. The analysis is based on 3D scans of 144 power tools that are divided into 11 groups. It analyzes 13 typical diseases and their economic impacts. From an economic point of view, the costs per sick employee are almost 57% higher compared to a healthy employee. The author's design of the ergonomic part of the tool is also part of the thesis.
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Analysis of defects of copper alloy after wire electrical discharge machining
Vontor, Jakub ; Osička, Karel (referee) ; Mouralová, Kateřina (advisor)
Electrical discharge wire machining, which represents non-conventional machining technology is up on very high technological level. However, due to this type of machining many of defects are set on the material and the quality of machined surface is changed according to set parameters of machine. Complex study was created with the aim of optimization these parameters according to final quality of surface and right wire speed. This study include experiment with 33 samples, every of these samples was machined with different parameters, results of these machining were analyzed.
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Component measurement with a FARO device
Grepl, Martin ; Mouralová, Kateřina (referee) ; Kalivoda, Milan (advisor)
This theses deals with the measuring of comparts from the lastest technology FARO. It introduces technology FARO and the most significant products among the measuring arms. Subsequently, all the features of the measured particles, that are necessary to know for the whole process, are mentioned. The whole process of measurement is described step by step in the practical part. The aim of the measurement is to verify the dimensions which are prescribed by the author and geometrical tolerance of the particles via measuring arm. The thesis also consists of a final protocol of the measuring process, created by the program PolyWorks. Finally, the particle is considered to be incompatible, due to the unfullfilness of the maximum prescribed deviations.
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Ultrasonic machining technology
Krajči, Jakub ; Mouralová, Kateřina (referee) ; Osička, Karel (advisor)
The main aim is of the thesis is to provide information about ultrasonic machining, to introduce ultrasound and its physical properties, to describe ultrasonic machining methods and to show the non-destructive use of ultrasound. Furthermore I will hold a discussion about this topic and make a quick summary.
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