National Repository of Grey Literature 85 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
On the analyses of cutiing tools coated with PVD coatings
Malý, Martin ; Osička, Karel (referee) ; Píška, Miroslav (advisor)
In this diploma thesis, literary research about drilling and coating technology focused on PVD coatings was performed. Furthermore, there is an overview of cutting materials. In the experimental part of the work, the attention is dedicated to tests of twist drills from cemented carbide and high-speed steel materials. For these drills, the feed force Ff and the cutting moment Mc were measured when drilling into austenitic stainless steel. At the end of this work, the technical and economic evaluation of the practical part is presented.
Analysis of causes of inaccurate production
Foral, Jakub ; Trčka, Tomáš (referee) ; Kalivoda, Milan (advisor)
The topic of the Master‘s thesis focuses on NOK pieces which are produced during the production of components. NOK pieces and their rework significantly increase the company‘s costs. In the individual chapters there is an analysis of the company and the definition of a critical point. The FPY indicator was used for the analysis of the company, from which the component was identified. Three improvement concepts have been created for this component. These concepts may reduce the rate of NOK products in the company. The conclusion of the Master‘s thesis presents the evaluation and implementation of the selected change.
The options of production of holes at the tube wall
Vysloužil, Oldřich ; Harant, Martin (referee) ; Peterková, Eva (advisor)
The topic of the bachelor thesis deals with processing and forming of profiles (tubes). In the thesis, the most well-known methods of making a hole in the wall of the tube such as drilling, cutting and milling are introduced. The work is further supplemented by some of the unconventional methods such as Flowdrill, T-drill, or currently the most required machining today – laser cutting. Basic technology process is described for each method, as well as examples of tools and machines are presented. In the end, complete evaluation is presented in the form of an overview of advantages and disadvantages.
Design of technology production of SPD stop for bicycles
Tomek, Jiří ; Fiala, Zdeněk (referee) ; Jaroš, Aleš (advisor)
The bachelor thesis is focused on the design of shape and production technology of MTB clipless for bicycles. Autodesk Inventor software was used for modeling MTB clipless and SolidCam software was used for creating CNC program. The technology of production and description of used technologies were describe too.
Design of drilling arm for machine-tool
Štancl, Dominik ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
The thesis deals with the design and deformation analysis of the real construction, which is a complement to the machine tool. The introductory part is devoted to the theory of drilling technology and extension of machine tool possibilities for this method of machining. The next section contains the design of the drill arm and the subsequent analysis in ANSYS to verify that the structure fulfill the requirements. At the end, the effect of changing the dimensions of the arm on the resulting rigidity and its functionality is assessed.
Improvement of drilling technology of flange for a submersible electric motor
Veselský, Radim ; Kalivoda, Milan (referee) ; Jaroš, Aleš (advisor)
The goal of this bachelor’s thesis is introduction of existing drilling technology, assessment of existing technologies and design combined step–drilling tool. The first part of the bachelor’s thesis describes existing drilling technology, drilling tools and drilling machines. The second part of the bachelor’s thesis describes workpiece and existing technological process of its production. The last part of bachelor’s thesis consists of design of new step–drilling combined tool and its implementation to new technological process.
Analysis of durability and costs of monolithic milling and drilling tools
Kašpar, David ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
This bachelor thesis deals with the durability of different types of monolithic drilling and milling tools made of high-speed steel and sintered carbide. The theoretical part deals with durability, possible types of wear of monolithic drilling and milling tools and related circumstances. The practical part examines the durability of different types of tools for drilling and milling, their comparison in terms of cost and productivity of machining and their impact on production costs in the production of a simple part.
Design for Production of Clamping System
Tuza, Marek ; Zemčík, Oskar (referee) ; Sedlák, Josef (advisor)
This bachelor thesis deals with the development of a universal clamping system, which should be part of every home workshop. However, it is primarily intended for drilling operations. The theoretical part presents research on various types of clamping devices. This knowledge is later used in the practical part. The aim of this thesis was to create a design of the clamping system, to perform its complete production and to evaluate its features both from a technical and economic point of view. The output of this bachelor thesis is an entire universal clamping system and its detailed drawing documentation. Moreover, there are also suggested further developments and improvements. Even though the production of the clamping system itself appears to be economically disadvantageous in comparison with a commonly available clamping device, it is necessary in order to meet specific requirements. In conclusion, the overall evaluation of the production of the clamping system is given.
Design of large format milling machine
Ďurovec, Mikuláš ; Štěpánek, Vojtěch (referee) ; Tůma, Jiří (advisor)
The subject of bachelor thesis is to design and construction of a large-area CNC milling machine for machining large polypropylene boards. First part defines the CNC machine, types of milling machines and the availability of machines on the market. The practical part is focused on the design and construction of a CNC milling machine, including the creation of drawing documentation.
Solution of some rock stability problems in slopes and walls with optimization of anchor elements
Holý, Ondřej ; Vojtasík,, Karel (referee) ; Pruška, Jan (referee) ; Horák, Vladislav (advisor)
This presented phd thesis focuses on the problems of instability in the rock walls and slopes, whose manifestation is among othersv rockfall and associated risks. It describes the theoretical aspects of the description of instability and summarizes the construction methods and technologies to eliminate them. On the basis of knowledge gained from specific buildings in the Czech Republic and based on the research project solved by author, submits suggestion to optimimalization of the anchoring elements as a basic part of most remediation methods.

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