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Efficiency Improvement Proposal of Machining Process of Cylinder Component for Oil Wells
Koudela, Michal ; Sliwková, Petra (referee) ; Sedlák, Josef (advisor)
This diploma thesis is concerned with a proposal for increasing the efficiency of machining when manufacturing an inner sleeve at the company Sanborn a.s. In the diploma thesis, the technology used for machining itself is first briefly described, followed by a description of the original production technology including a description of machine and hand tools used and cutting conditions. The next part of the paper describes the proposal for increasing the efficiency of machining operations. The proposal includes a description of the suggested solution that will lead to increased efficiency, a machine proposed for the specific operation, appropriate tools and proposed cutting conditions. The benefits of implementing the proposal are also described here, both in terms of saving unit time, and in terms of the machining technology itself, where, for example, the formation of chips is improved, the inner tension of machined components reduced, etc. The diploma thesis further includes a technical-economic evaluation assessing the economic benefits of the changes introduced.
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Machining of titanium alloys
Müller, Peter ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
The bachelor thesis specifies the most important properties and production processes of titanium, categorizes titanium alloys and their properties. In the experimental part, titanium alloy Ti-6Al-4V blank was machined and cutting forces were measured, depending on selected feeds per revolution. Subsequently specific cutting force was calculated and compared with values given by the tool manufacturers.
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Production of threads with taps
Chludil, Petr ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
This thesis deals with the study of production process of threads by screw-taps from the very description of the individual threads through all the available methods of the threads production, thread control function, up to the actual taps, materials, coatings and their distribution. In the experimental part the thesis deals with the question whether it is possible to find an alternative to the standard production of threads using cutting by taps. This alternative seems to be the use of forming taps. The experiment took place under constant cutting conditions and consisted of two parts, one of them was the production of threads into the pre-drilled through holes and the second one was the production of threads into the pre-drilled impassable holes. The result of the experiment was finding the course of the cutting moment depending on the time and the amount of wear of the examined kinds of taps when all the measured values had to be statistically processed and conclusions were then evaluated.
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Machining of hardened parts
Heiserová, Sofia ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
The usage of quenched materials in industrial production leads to the application of hard machining. Higher requirements for machines and cutting tools are needed during hard machining than during conventional machining. Quenched materials carry problem of volume and geometric changes after quenching and after machining as well. It is necessary to think about volumetric compensation in advance, before quenching of the workpiece. An experiment is suggested for optimalisation of longitudinal turning of steels 42CrMo4 and 50CrMo4. Hard turning has notable benefits such as flexibility of cutting tools and elimination of coolants, which provides ecological benefits. However, the disadvantages are higher tool wear and high prices of tools.
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Design of an engraving LED laser
Kasík, Martin ; Sliwková, Petra (referee) ; Dvořáková, Jana (advisor)
This thesis is focused on the search of unconventional machining methods, especially on the technology of laser beam machining. It deals with the area of laser cutting and engraving and examines the influence of individual technological parameters on the given process. Furthermore, there is proposal of design of hobby LED engraving machine, its supporting structure, HW and other electronic components. The prototype of the device is physically assembled and its functionality is verified in the form of several engraving tests of raster and vector formats of graphic materials, and some several shape cuts are made also. The technical evaluation of the assembled equipment, evaluation of tests performed and cost calculation is part of the work too.
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On the analysis of welding seams
Němečková, Monika ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
The thesis deals with the analysis of the quality of welded joints on the pressure tank, which is produced by Bosch Diesel s.r.o. The main point is to improve the porosity in the weld joint. The theoretical part deals with the analysis of the pressure container and its production process. The practical part deals with the cleaning process before welding and the analysis of residual grease on the welding surfaces after the cleaning process in which two different cleaning media were used. Furthermore, the CT evaluation of welded joints was used to support which washing medium is better, thus providing better degreasing and thus less porosity in the weld joint, for pretreatment of weld surfaces.
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Possibilities of the CAM software PowerMILL 2018 for machining of a component for a firearm
Drmota, Josef ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
The subject of this diploma thesis deals with possibilities of the CAM software PowerMILL 2018 for machining of a component for a firearm. The thesis consists of a research focused on the issue of combined firearms, the specification of the part the thesis deals with and the analysis of the materials used. The practical chapters solve component clamping, tool selection and subsequent elaboration of the NC programs. At the end of the thesis there is shown the simulation of machinig including collison control.
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Application of CAD/CAM software PowerMILL 2020 for turning
Horáček, David ; Sliwková, Petra (referee) ; Polzer, Aleš (advisor)
The work is focused on introduction and brief description of CAM software PowerMill 2020 from a company named Autodesk. Furthermore, this thesis discusses the issue of CAD/CAM systems, especially additive manufacturing. Description, division, technology, materials and area of application of additive manufacturing including advantages and disadvantages are discussed. The work also includes the issue of hybrid manufacturing and introduces the most important companies operating in this area of production. The practical part of the thesis is mainly focused on outlining the machining process of own designed part in the PowerMILL2020.
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Optimization of a selected manufacturing production
Kolenič, Michal ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
Táto diplomová práca popisuje optimizáciu obrábacieho procesu za účelom zvýšenia produktivity výrobnej linky. Zadanie bolo vypracované v priebehu priemyselnej stáže vo firme Stellantis na obábacej linke blokov valcov motoru DV. Práca vysvetľuje metódy analýzy strát produktivity na výrobnej linke a aplikácii opatrení smerujúcich ku zvýšeniu produktivity, obzvlásť nasadenie nástrojov štíhlej výroby. Najviac boli nasadené nástroje SMED, ktorého cieľom je optimizácia výmeny rezných nástrojov, a TPM, ktorý ma za cieľ zvýšiť spoľahlivosť výrobných prostriedkov.
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