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Options of efficiency increase of machining process in the production of VE and VP30 bodies
Švaříček, Petr ; Bumbálek, Bohumil (referee) ; Humár, Anton (advisor)
Master thesis describe machining process in production of units VE, VP30 for rotary injection pumps in specific conditions of the BOSCH DIESEL compa-ny in Jihlava with intention to offer an possibilities of machining process effi-ciency optimization. The introduction describes the history of the company and product range. In the second part is carried out evaluation of current state of machining process at a specified section. The main part of the master thesis analyzes and examines the leading options to more efficient machining process and propose specific options for improvement with regard to the requirements of production and quality systém. The conclusion includes evaluation of the proposed actions.
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Cemented carbides and theirs effective use
Baran, Jan ; Prokop, Jaroslav (referee) ; Humár, Anton (advisor)
The diploma work deals with comparison of sintered carbides in product assortment of Pramet Tools a.s., Sandvik-Coromant and Ceratizit companies in term of their cutting speed, feed and depth of cut for the turning operation. The comparison of cutting parameters is made for P, M, K, N, S and H groups. For better comparison there are always two sintered carbides from each of the manufacturers mentioned for each of the groups P, M, K. They are mentioned for groups N, S and H only if they are suggested by the manufacturer.
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Milling cutters for CNC machine tools
Janošek, Martin ; Sámelová, Vendula (referee) ; Humár, Anton (advisor)
My bachelor thesis is about milling cutters for CNC machine tools. First the thesis deals with milling theory. There are fission tools or fission machines. Next chapter is about holding tools. The practical part deals with an assortment of production of milling tools for milling flat surfaces made by three milling tools producers. These are Sandvik Coromant, Pramet Tools and Walter companies. In the end of my work these companies are evaluated from different points of view.
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On the Effective Machining of New Ceramic Materials
Sámelová, Vendula ; Sedlák, Josef (referee) ; Vrba, Vladimír (referee) ; Humár, Anton (advisor)
Advanced ceramics have long held the front of the list of promising materials for high-tech applications. The most common problem is the high cost of design, production and machining of advanced ceramics parts. The main sense of advanced ceramics processing techniques development is affordable, high-volume production. The dissertation is focused on SiC silicon carbide grinding. SiC is used in the design of machine parts due to its excellent properties The deep knowledge of the diamond wheel grinding process is important because it is one of the finishing methods and therefore has a direct impact on the quality and strength of the SiC parts. The key issue here is the overall surface quality of the parts after diamond wheel grinding and the knowledge of the factors that influence the surface quality. These include, in particular, grinding vibrations. The main purpose of the thesis is to create a system of specific scientific and technical information, which will allow applying optimal technological procedures in the processing of ceramic components. The theoretical part of the thesis contains an analysis of the current state of the art in the advanced ceramics machining area, detailed analysis of the ceramics grinding with diamond grinding wheels, signal analysis theory and analysis of surface quality assessment methods. The experimental part contains analysis and discussion of the results obtained during the monitoring of the silicon carbide grinding process with a diamond grinding wheel. Various diagnostic methods have confirmed the presence of vibrations at a frequency close to the speed frequency of the grinding wheel, which had a significant, negative effect on the samples surface quality. Vibration diagnostics has identified a specific source of vibration (clamping of the workpiece) and it has been removed subsequently.
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Effective milling tools
Paseka, Petr ; Osička, Karel (referee) ; Humár, Anton (advisor)
The topic of this bachelor thesis are effective milling tools. First chapter is focused on description of the basic milling characteristics. Distribution and description of milling tools from the point of view of their construction, material, use and labeling is in the second chapter. Last chapter contains selection of three types of milling tools and cutting materials from two important producers and their comparison. The types of milling tools are face milling tools, radial slot milling tools and shoulder milling tools. The home producer is Pramet Tools s.r.o and the world producer is Sandvik Coromant.
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Modern cutting cemented carbide tools
Vopařil, Josef ; Humár, Anton (referee) ; Píška, Miroslav (advisor)
This thesis is focused on cutting tools made of cemented carbides. It contains analysis of cemented carbides for uncoated and coated cutting tools. It contains examples of modern tools for turning, milling and drilling. Practical part of this thesis evaluates and compares cutting properties of two types of spiral drills.
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