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Superhard cutting materials and theirs effective use
Vampola, Lukáš ; Sedlák, Josef (referee) ; Humár, Anton (advisor)
Diploma thesis is focused on cutting superhard materials (polycrystalline diamond and polycrystalline cubic boron nitride). It deals with physical, mechanical and cutting properties, production and effective use. Evaluative product range of superhard cutting materials of the prominent world producers in terms of cutting conditions and type of materials machined in turning.
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Superhard cutting materials and theirs effective use
Grausgruber, Jiří ; Prokop, Jaroslav (referee) ; Humár, Anton (advisor)
n the first part of this diploma thesis there are described basic findings about superhard cutting materials (sorts, notation, structure, physical-mechanical properties, usage, production) and evaluates this tool of material from the aspect of cutting ability. The second part focused on complex data processing about assortment of superhard cutting materials of significant tools materials producers and comparison of work conditions (kind of machined ma-terials, cutting conditions), which are recommend for effective turning applica-tions by producers.
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The durability of cutting inserts during face milling
Spáčil, Radek ; Slaný, Martin (referee) ; Jaroš, Aleš (advisor)
The bachelor thesis deals with the wear of cutting tools in the form of cutting inserts during face milling. The thesis is divided into two parts. The first part is a form of search which describes milling technology and also includes progressive milling method HFC. The next chapter describes the types of using cutting materials with greater emphasis on sintered carbides. The third chapter deals with the basic methods of coating. The experimental part of bachelor thesis gives a description of used material, tool, machine, and the experimental progress. The aim of the experiment was to compare the durability and to compile the action of forces for cutting inserts. The experiment has shown that the cutting force increases as wear level increases.
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Methods of coating and coatings analysis
Rudy, Veronika ; Mouralová, Kateřina (referee) ; Prokeš, Tomáš (advisor)
The thesis deals with the coating of cutting tools. It summarizes the types of material used to create cutting tools, the characteristics of the main coating methods, the way tools are treated before coating and methods of testing the physical properties of coatings. The practical part contains the description of coating deposition on interchangeable cutting blades, where two types of coating were tested (SHM1 and SHM2). Furthermore, their mechanical and physical properties were tested. The analyzes used were adhesion and cohesion tests, coating thickness and hardness along with the chemichal composition.
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Solution wear of tool with inserts in condition technology of turning.
Kružík, Petr ; Humár, Anton (referee) ; Kalivoda, Milan (advisor)
This bachelor thesis analyzes wear occurrence at chosen tool inserts in the process of turning of a heat treated cylindrical workpiece. Inserts for turning have been chosen from the area of coated and non-coated cemented carbides and cermets with respect to the used type of workpiece material. The work further deals with the possibility of their use under cutting conditions that are set to the upper cutting limits from the recommended range, especially without cooling. To obtain detailed information, the conditions of the test are further modified. Then, the results are also evaluated from the point of view of costs, i.e. market prices of inserts for possible application in the manufacturing process.
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Tools for CNC milling centres
Konečný, Petr ; Madaj, Martin (referee) ; Humár, Anton (advisor)
This thesis is focused on milling tools for CNC milling centers. The first chapter of this thesis deals with a short theory of milling and the characteristics of CNC milling center. In next chapter are divided and described milling tools in terms of use and construction. This chapter also describes tool materials, clamping, coating and marking of these tools. The practical part is devoted to production assortment of mills from major producers. It is an analysis, description and evaluation of assortments of these producers. For this purpose were selected companies Sandvik Coromant and Pramet Tools.
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