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Cemented carbides for machining of stainless steels
Kakáč, Martin ; Sedlák, Josef (referee) ; Humár, Anton (advisor)
The bachelor thesis deals with stainless steels and their machining, cemented carbides, both coated and uncoated. The first chapter is devoted to a detailed distribution of stainless steel, its properties and their use in practice. Next cemented carbide are characterized as a whole. From the species, production marking via physical and mechanical properties to the coating. The last chapter is focused on cemented carbides for machining stainless steels. Tools from companies WNT, Pramet Tools and Sandvik Coromant are selected. The com-parison of recommended cutting conditions in the area of application of stainless steels. It is made practical test with indexable cutting insert HCN 2125 by WNT.
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Tools Made from Cemented Carbide
Opršál, Ladislav ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
The thesis focuses on cutting tools made of both coated and uncoated cemented carbides. The first part of the thesis deals with the division of materials used for the production of the tools. The second part of the thesis introduces uncoated cemented carbides, special attention being paid to the labelling, production and properties of such compounds. The third part of the thesis presents coating deposition techniques and examines the properties of coating layers. Coating layers are produced using two different methods – CVD and PVD. The last part of the thesis compares the properties of the cutting tools (e.g. their cutting values) produced by the companies Pramet Tools, Sandvik – Coromant and Seco Tools.
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Production and grinding/sharpening of cemented carbide tools
Prokeš, David ; Prokop, Jaroslav (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis concerns the description of rotary tools made of cemented carbides. Ce-mented carbides appear as wide range tool material with reference to ductility, hardness of material and relatively low cost. New knowledge of cemented carbide manufacturing has still improved mechanical characteristics of this material. Tools made of cemented carbides are made on modern 5 axis CNC tool-making grinder machines which can be easily set with grinding parameters and interaction with measuring tools for quick parameters changeover. All of these qualities are suitable for serial and also piece tools production.
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Coating methods for cutting tools
Novotný, Michal ; Dvořák, Jaromír (referee) ; Humár, Anton (advisor)
The bachelor thesis titled Coating methods for cutting tools describes techniques of deposition of hard abrasion resistant coatings by physical and chemical methods. The thesis contains the partition of the materials for cutting tools, description of producing cutting inserts made from sintered carbides, basic types of coating layers and comparison of coated sintered carbides in the assortment of selected manufacturers. There is also an outline of some trends in the area of coating methods at the end of the thesis.
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Technology solution with cutting operation of "cover" component
Chlád, Luboš ; Osička, Karel (referee) ; Kalivoda, Milan (advisor)
In mentioned solution technology of cover part is processed component analysis, proposal of semi-finished product and production technology. In this thesis are selected concrete cutting machines, tools and technological process is elaborated. At the end the techno-economic evaluation is done. This evaluation deals with calculation of times for separate cutting operations, number of machines, tools and workers.
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Sharpening and producing standard tools on a CNC grinder Walter
Martinek, Petr ; Kouřil, Karel (referee) ; Kalivoda, Milan (advisor)
This bachelor´s thesis presents a modern five-axis CNC machine HELITRNIC POWER from the company Walter Maschinenbau GmbH, which is designed for sharpening and production of rotary, cutting tools. The project provided the most commonly used types of tools, their materials and surface treatment (coating). Furthermore, there is described the production process and sharpening of tools using control software Tool Studio, when considered appropriate wheels and clamping devices. Finally, it provided an economic assessment of costly equipment.
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Coating methods for cutting tools
Doležal, Jan ; Madaj, Martin (referee) ; Humár, Anton (advisor)
Bachelor work describes methods of coating of cutting tools and their technical characteristics. The work is given below the current product range of manufacturers of coated cemented carbides. At the end of this work is treated the development of coating cutting tools and types of applied coatings.
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Modern methods in drilling.
Kodys, Martin ; Kalivoda, Milan (referee) ; Zemčík, Oskar (advisor)
This Bachelor’s thesis deals with modern methods in drilling. In the first part, the drilling methods are divided, followed by each method description and practical usage. The second part is devoted to the way of orientation in products of couple most significant producers of drilling tools.
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Roughing milling of plane and form surface with CNC machines.
Indra, Jaroslav ; Zouhar, Jan (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis deals with roughing milling. Beginning of this thesis is concerned with common description milling and example work surface. Next part refers about necessary information for selection of roughing milling tool and its toolholder. Next chapter deals with basic information about CNC milling machines. Last part is devoted selection of concrete configuration machine, tool and its toolholder for roughing milling of plane and form surface with CNC machines.
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Coated cemented carbides
Foltýn, Michal ; Sedlák, Josef (referee) ; Humár, Anton (advisor)
This bachelor’s thesis is focused on coated cemented carbides, methods for coatings and properties of coatings. In the first part of this thesis there is mentioned basic subdivision of tool’s materials, including description of properties and possibilities of their use. Another part of this thesis is focused on the coating deposition methods. As each method there is noticed the description, advantages and disadvantages. In next part there are described processes which precede own deposition process and their influence on properties of coatings. In this thesis are also described properties of coatings and methods for their testing. The last part of thesis is focused on the offer of certain producers of coated cemented carbides. Several materials are chosen from each producer and there are mentioned descriptions of their properties, structure of coatings and possibilities of using.
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