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Production technology of drill
Křehlík, Luboš ; Kolář, Ladislav (referee) ; Osička, Karel (advisor)
The work deals with production technology stepped drill of cemented carbides. Handles the basic methods and information technology grinding. Cemented carbides are becoming more frequent choice of material for processing in many industrial directions. They allow widespread use due to their mechanical and technological properties. Tools of this material are manufactured on a 5-axis grinding machines. The use of precision CNC machines enables efficient and accurate production of both simple and complex cutting tools. Software CNC machines allow you to control the 3D simulation before production begins, it's a convenient tool for checking the functionality of the program. It is also possible to establish the production of the subsequent dimensional control of the finished piece. These CNC machines and cemented carbide tools can be used for both serial and piece production.
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Tools for threading and their use
Veselý, Václav ; Polzer, Aleš (referee) ; Sliwková, Petra (advisor)
The bachelor’s thesis Tools for threading and their use deals with issues connected to tools, the materials used and their usage in the field of mechanical engineering. Individual parts of the thesis cover types of tools for threading, methods of threading and materials suitable for tap making. Further, the range of monolithic milling taps in the producers’ supply is also analysed.
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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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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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On the coating of shearing cemented carbide tools
Nováková, Radana ; Šurda, Adam (referee) ; Píška, Miroslav (advisor)
Tato diplomová práce se zabývá problematikou PVD povlakování střižných nástrojů ze slinutých karbidů, se zaměřením na zvýšení životnosti postupových nástrojů. Především poukazuje na využití povlakovaných nástrojů v praxi a procesních kroků před a po procesu povlakování. V teoretické části jsou popsány obě základní metody povlakování, tj. fyzikální metoda PVD a metoda CVD, založena na chemickém procesu. Dále jsou představeny jednotlivé způsoby vlastních procesů povlakování se stručným popisem výhod i nevýhod jejich využití. Praktická část je zaměřena na testování, jehož podstatou byl nejen vhodný výběr samotného povlaku pro daný materiál, ale i úpravy před a po povlakování, které jsou často opomínány. Ty jsou však nezbytnou součástí a mají výrazný vliv nejen na výsledný povlak, ale i na kvalitu pracovního procesu. Vyhodnocením experimentu je souhra určení nejproduktivnějšího povlaku v závislosti na dané úpravě.
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Technology of production combinated cutting tools
Rusz, Radek ; Kalivoda, Milan (referee) ; Osička, Karel (advisor)
In the thesis is solved manufacturing technology of step drill from material of cemented carbide. At first is made review of existing shank cutting tool types, after that follows an analysis of cemented carbide tool material. In the next part of thesis is manufacturing technology of this tool, including review of grinding wheels, designed. Output of this work is procedure of program designing for manufacturing this tool in software Numroto. Next output is techno-economic evaluation of step hole manufacture with combined tool and comparison to conventional type of manufacture.
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Progress in technology of mold milling with coated profile tools
Doležel, Ondřej ; Bumbálek, Bohumil (referee) ; Píška, Miroslav (advisor)
This diploma thesis is involved in possible development of different types of milling molds coated with modern plows. The first part is devoted to an analysis of contemporary trends in forms production technology. The analysis includes the different types of machines and tools for making various kinds of molds and dies. Another part deals with design of dies for sheet metal shears. The thesis continues by design of the production procedure after heat treatment and finishing die by miling. For milling of die are designed miling tools, the NC program and the possible development of manufacturing the die using a new machining center and the possibility of production optimization. The penultimate point of the thesis is technical and economical evaluation of the direction of development and comparison of positives and negatoves of each method. At the final evaluation is all summed up.
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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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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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Concept of reaming technology
Štěpánek, Martin ; Sedlák, Josef (referee) ; Kouřil, Karel (advisor)
The diploma thesis deals with the design of the hole-making technology for hydraulic components that are specific for its high requirements on size and shape accuracy. The aim of diploma thesis is to compare the productivity, efficiency and accuracy of reaming with two different reamers – the solid carbide reamer and the newly designed reamer that combines two cermets on cutting part of the tool. In the practical part, the data analyses and calculations were made. It was discovered that the newly designed tool brings economic benefits while the qualities of final hole are improving or remaining at the same level.
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