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Automatized technologikal workplatze grinding and polishing plumbing fittings
Dvořák, Luboš ; Osička, Karel (referee) ; Prokop, Jaroslav (advisor)
he aim of this thesis is possibilities analyse of automatization of finishing operations by producing bodies of plumbing fittings and selection it’s optimal version. The objective is project of workplace for conditions of concrete production plant and verification of return of it’s operating. A part of thesis is design of workplace and design of production machines and komplete technology of prodicing of parts in setting of production plant. Than there is partial verification of profected technology by real testing.
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Optimization of grinding characteristics when grinding cemented carbides by diamond wheels
Mangl, Petr ; Dvořák, Jaromír (referee) ; Humár, Anton (advisor)
This master‘s thesis is presenting the way of the optimization of grinding characteristics when grinding cemented carbides by diamond wheels. There is described the theory of grinding, including grinding wheels and basic characteristics of cemented carbides in the theoretical part. There are defined experimental metering accomplished on the CNC grinding machine Walter Helitronic Power Mini in the practical part. There were tested eight grinding wheels. The grinding rate, surface roughness Ra, theoretic guaranteed storage period of grinding wheel in number of cuts, theoretical capacity of machined material, achievement of grinding machine and behaviour of the wheels when grinding ware evaluated from the reached results.
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The proposal of lean production implementation in a industrial enterprise
Nachtmann, Pavel ; Bartošek, Vladimír (referee) ; Jurová, Marie (advisor)
This master´s thesis describes the production process in Japanese enterprise Daikin Device Czech Republic s.r.o. with emphasis on the production schedule, equipment and manufacturing system with elements of lean production. According to the production process analysis at the given production line a new solution of the production process has been suggested to increase production efficiency. This conception has been implemented and compared to the production process before, as well as to the assumed production process after increasing the efficiency.
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Acrylic glass base production to gramophone deck
Bezděk, Filip ; Zouhar, Jan (referee) ; Kalivoda, Milan (advisor)
This thesis is aimed at a very detailed process of a transparent plexiglass used for manufacturing an upstand of a gramophone. The diploma work is mainly focused on various types of the plexiglass, its attributes and the gramophone’s upstand production. Several manufacturing technologies of a plexiglass such as division of a board-type semi product, precise milling, grinding, polishing and thermal treatment are provided in this diploma work through a very detailed description of a production process of a gramophone’s deck. The outcome of this thesis is a description of individual technologies and the economic evaluation within the real business environment of AZ Plastik company.
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The proposal of advanced production technology of steel molds
Opršál, Radek ; Prokop, Jaroslav (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis deals with the modernization of steel mould production in the company P-D Refractories CZ a.s. The thesis focuses on the analysis of current production technology, determination of the bottleneck in production, and the analysis of the possibilities of modification of current technologies. The last part of the thesis proposes the most optimal methods of solution, introduces the technical procedure modified for the new solution and presents the evaluation of the data.
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Grinding of Bearing Rings
Růžička, Daniel ; Prokop, Jaroslav (referee) ; Kalivoda, Milan (advisor)
The main objective of this work is to evaluate the surface quality, machined on three different grinders (all three from different age), and to compare those grinders. Comparison is done by the achieved degree of precision of measured geometric tolerances in inner orbits of the outer bearing rings. As the best grinder is expressly marked the newest (type CNC) however, the second in a row (the second youngest) is very close to its quality and finally it is noted that the purchase and operation of this grinder is more convenient.
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Design of Device for Regrinding of Specimens
Matečka, Martin ; Nečas, David (referee) ; Smejkal, David (advisor)
This bachelor thesis is focused on design of device for regrinding of specimens. In the first part is described grinding technology, cutting conditions for grinding of outer cylindrical surfaces and kinematic and dynamic phenomena arising in these conditions. There are also analyzed the grinding tools and their using. In the next points are described the designs of the grinder’s basic components. The last in this chapter is described the testing device on which the specimens are tested. The next chapter is focused on description of the objectives and analyzing the problems. There are described the variants of design solutions. After assessment of advantages and disadvantages of all variants is selected optimum design solution which is detailed described in the last section.
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Analysis of appropriate finishing technology after deep drawing
Šobáň, Pavel ; Císařová, Michaela (referee) ; Podaný, Kamil (advisor)
This bachelor thesis summarizes information about appropriate finishing technology after deep drawing. The thesis is focused only on the most used and most proper methods, which include material parting operations, such as plate shearing, laser, plasma, water jet and saw cutting, and machining operations, such as lathe-turning and grinding. For each of the mentioned methods, a principle of the selected technology is described and also its suitability for the present problems. The thesis compares the individual methods considering their advantages and disadvantages for removal of uneven edges of cylindrical shells.
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