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Rotary clamping elements of tools machine tool acessories
Komárek, Miroslav ; Dvořák, Jaromír (referee) ; Kalivoda, Milan (advisor)
The theme is addressed by rotating clamping elements with regard to their development over time. Shows the possibility of clamping rotating tools from the universal machine, to the modern machining operations. The practical part linked to the possibility of clamping assemblies in different machining oparations and their balance. Selection of clamping elements in the catalogs of companies.
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Machining threading holes.
Kollnerová, Kateřina ; Dvořák, Jaromír (referee) ; Kalivoda, Milan (advisor)
This work deals with methods for making threads with emphasis on the production of internal threads. The aim is to introduce basic methods of pro-duction. Indicate at the beginning are individual cutting and forming technologies. The central part is dealing with internal threads. The conclusion is devoted to specific applications of machined parts.
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High Speed Steels Cutting Tools and their Applications Today
Nosek, Jan ; Dvořák, Jaromír (referee) ; Sliwková, Petra (advisor)
My bachelor’s thesis “High speed steels cutting tools and their applications today” is about a chemical concept, a heat processing, a cutting property and a production of cutting tools of high speed steel materials. This work consist a possibility of an increase performance, a resist of high temperatures and a durability of high speed steel tools by means of PVD films and an accessible technologies. Next I must found producers of cutting tools and their production of high speed steels.
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Proposal production of a chain wheel with the unconventional methods of machining use
Mikeš, David ; Kubík, Roman (referee) ; Dvořák, Jaromír (advisor)
This bachelor thesis deals with the application of unconventional methods in machining (use of laser and hydro-abrasive beam) during chain wheel production. Firstly, the unconventional methods are divided according to the overwhelming effect of material separation, and then these methods are briefly described. In the second part of the thesis, you can find the technological process of chain wheel production with the usage of cutting operation method, which is followed by the assessment of production costs. Afterwards, the chain wheel is produced with the application of laser and hydro-abrasive beam. The final part of the thesis contains comparison between the unconventional methods and the conventional method of cutting operation. The comparison is based on the achieved structure of surface of the gear tooth, the production time and the economic point of view.
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Design and construction hobby milling machine
Štěpánek, Vojtěch ; Slaný, Martin (referee) ; Dvořák, Jaromír (advisor)
This work deals with comparing CNC machines. It compares components used in small hobby machines with components of large commercial machines. The work also focused on the design and construction of real CNC milling machine branded as MillVOY and findings from its testing. Emphasis during the construction is laid on minimizing costs by the use of ma-ximum of normalized parts. Lowering the cost can make these small milling machines affor-dable for any workshop.
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High-Speed Steel Taps and their Uses
Něnička, Filip ; Dvořák, Jaromír (referee) ; Sliwková, Petra (advisor)
Characteristics of high speed steels. Description of production, chemist and heat threatment of high speed steels. Characteristics of thread produce methods and tools. Description of thread turning, milling, grinding, cutting and forming. High speed taps in product range of chosen tool manufacturers.
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Cutting ceramics
Maříková, Petra ; Dvořák, Jaromír (referee) ; Humár, Anton (advisor)
Bachelor thesis deals with topic of cutting ceramics. In the first part is given a basic distribution of cutting materials and their general characteristics. The second part is focused on itself cutting ceramics, its history, production, distribution and mechanical and physical properties. In the third part is discribed assortment Ceramtec, Iscar, Kennametal, Sandvik-Coromant, Saint-Gobain Advanced Ceramics.
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Technological design of a manufacturing process modernization
Vaverka, Jiří ; Dvořák, Jaromír (referee) ; Kalivoda, Milan (advisor)
The topic of this thesis is to design the modernization process. The aim of this work the design of new machines for a particular component, which would replace the existing ma-chinery used in company-tion in which the component is produced. Introduction is focused on the description of the company and selected components for which it is evaluated di-mensioning, tolerance, functionality and material. The following describes the current ma-chinery engineering company and then are selected machines in two variants, which would replace the original equipment. With these new machines is a technical documentation and is evaluated modernization and environmental concerns. At the end of the re-evaluated results that modernization is beneficial or not.
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The comparison of cutting tools for milling of dental impression made from materials Ti6Al4V ELI and CoCr
Bíba, David ; Zemčík, Oskar (referee) ; Dvořák, Jaromír (advisor)
The aim of this dissertation is the comparison of two chosen milling tools. Both milling tools are made of solide carbides and therefore the theoretical part deals with these materials. We compare the chemical composition as well as the milling tools materials. Next chapter deals with the geometry of the milling tools with semi-circular front blades cutting edges and comparison. In the last part of the dissertation we test the durability. The data gained by a micrometric method are interpreted in the graph. By means of this research we found out the impact on the suitably chosen geometry on splinters and wear resistance. It is possible to optimize the produced milling tools or to choose more suitable tool instrument on the basis of gained durability data.
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