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Superhard cutting materials and theirs effective use
Martincová, Zdeňka ; Polzer, Aleš (referee) ; Humár, Anton (advisor)
Diploma thesis is intended on a polycrystalic diamond and a pocrystalic cubic boron nitride from the standpoint of their description, physical, mechanical and cutting properties, use and contemporary trends of development at renowned producers of tools and tool materials. The aim of the work was a complex working of conditions (type of cutting material, cutting conditions), which are recommended by choice producers for the effective turning applications their kind of superhard tool materials.
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Cutting ceramics
Kasalová, Aneta ; Kalivoda, Milan (referee) ; Humár, Anton (advisor)
This bachelor´s thesis deals with cutting ceramics. The first part generally describes the materias intended for production of cutting tools and their charasteristics. Second part of this thesis is focused on the cutting ceramics, it´s history, distribution, production, structure and properties. In the last part the assortment of the companies CeramTec, Kennametal and Sandvik Coromant is described.
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Cermets
Salcburger, Martin ; Kalivoda, Milan (referee) ; Humár, Anton (advisor)
This bachelor´s thesis is focused on materials based on cermets which are designed for the machining of components. The first part describes a short classification and charasteristics of cutting materials used in machining. Second part is focused on the history of development of the cermets, their structure, production, chemical and mechanical properties. The current condition of range of the most known producers of cutting materials is described in the last part of this thesis.
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Influence of cutting conditions on durability of cutting inserts during turning
Hynčica, Vojtěch ; Fiala, Zdeněk (referee) ; Jaroš, Aleš (advisor)
The aim of present thesis is to determine the influence of the cutting conditions (the cutting speed, the feed, the depth of cut) on wear and durability of cutting inserts during machining process of the Inconel 718 alloy. In theoretical part thesis describes technology of turning, cemented carbides, their production and coating; it also deal with how the wear of the tool arises and how the tool wear progresses. In experimental part of this thesis we describe the cutting material, the machine, the machine tool and the experiment procedures. Measured values showed, that the durability of cutting inserts decreases depending on the cutting speed. We have determined that there is no direct correlation between the tool wear and the (increasing) level of the feed and the depth cut.
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Design of a upright drilling machine
Matoušek, Kamil ; Bilík, Martin (referee) ; Blecha, Petr (advisor)
The subject of this thesis is to propose a design of an upright drilling machine. The upright drilling machine is described in the first part. Research about machines available on the market nowadays is accomplished in the second part of the thesis. Based on this research the parameters of machine are selected in the final part and proposal of the engineering design of an upright drilling machine. Basic construction calculations are made too. The result of this thesis is an assembly drawing and a 3D model of an upright drilling machine.
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Comparison of the drilling process on samples of material
Furch, Michal ; Dvořák, Jaromír (referee) ; Kalivoda, Milan (advisor)
According to the name we can judge, that this research work is interested in comparing drilling technologies. The introduction of work includes different types of tools and machines to production interior rotated holes, another part continues with dissertation about drilling preparatory and tools materials. The end of work describes the experiment about drill interior rotated holes.
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Drilling technology solution in the maintenance center of small firms
Huňáček, František ; Mouralová, Kateřina (referee) ; Kalivoda, Milan (advisor)
The basic characteristics of the drilling technology, view of tools for drilling, descriptions of the parts and angles of twist drill are described in the first part of this project. In the second part of this project there are descriptions of various drilling technologies, the choice of cutting conditions and the choice of cooling and lubricating emulsions and oils. The range of tools, machinery and clamping equipment in the workshop machinery maintenance sugar factory in České Meziříčí are described in the next part of the project. Also specific technological conditions for the production of precision holes (with a use of a calculator) was determinated. After that their production was performed. In the end the possibilities of production machinery maintenance workshops during production of holes using drilling tools are shortly valorized.
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Solution production technology of part "laparoscopy instrument´s jaw" on a CNC machine
Pospíchal, Oldřich ; Sedlák, Josef (referee) ; Kalivoda, Milan (advisor)
Bachelor thesis submitting a proposal for the production of components of the laparoscopic instrument machined on CNC machine. Based on the analysis of components of design, technological and material aspects, is developed technological process of production, processed technological documentation, compiled and verified NC program for the CNC machining center. The thesis compares manual and automated programming, evaluates manufacturing of jaws and assesses possible monthly production capacity of one machine.
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New advanced milling tools
Dočekal, Petr ; Dvořák, Jaromír (referee) ; Humár, Anton (advisor)
This bachelor thesis deals with the subject of milling and relevant devices. The first part introduces the essential data about milling, the information necessary for specification of the cutting conditions and the form of milling. It also provides the description of types and labelling of milling machines. The second section centres on the milling device assortment of three companies, specifically on slab mills by WALTER AG, Sandvik Coro-mant, Pramet Tools, s.r.o. The final part of the thesis comments upon the rec-ommended usage scope of the machinery produced by the companies men-tioned above.
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Cermets
Hanousek, Petr ; Dvořák, Jaromír (referee) ; Humár, Anton (advisor)
This bachelor thesis deals with cermets, as tool material. In the first part of this work is given a basic overview of tool materials. The second part is focused on species, production and properties of cermets. The third part is given comparison cermets in the range of Seco Tools, Sandvik Coromant and Kennametal.
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