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Construction and production of modeller CNC milling machine
Krejčí, Miloš ; Slaný, Martin (referee) ; Zemčík, Oskar (advisor)
The purpose of this bachelor thesis is to design and manufacture a modeller CNC milling machine. The work includes introduction of modeller CNC milling machines available on the market and their comparison. The thesis also contains custom design of modeller CNC milling machine, followed by prototype manufacturing and testing. The design includes calculation and experimental verification of stepper motor parameters, frame sizing, load simulation and selection of suitable control electronics. A prototype was designed to verify concept, manufacturing technologies and cost.
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Design of a device for profiles painting on a pultrusion line
Krejčí, Miloš ; Slaný, Martin (referee) ; Zouhar, Jan (advisor)
Surface treatments of composite materials represent a specific issue in terms of the design of automatic painting equipment. The surface treatment modules were designed to be integrated into an existing pultrusion line, with an emphasis on maintaining the ergonomics of the workplace and adhering to space requirements. The selection of a suitable paint was first made from the coatings available on the market, then continued through collaboration with the manufacturer. The collaboration led to the development of a powdered, thermally curable formulation and a liquid, UV curable formulation. After adhesion tests, an optimised version of the UV formulation was selected. The design of the coating equipment is based on the requirements specific to the selected UV curable formulation. It consists of technologies for UV surface pretreatment, paint application and UV curing of the coating. The surface pretreatment is based on the experience of the supplier of the application technologies and own experiments. Coating application uses spray guns, again selected on the basis of testing in production. Curing of the coating is provided by a set of UV emitters with adjustable output power. Cost savings due to automation of the process and elimination of human labour are insignificant under current conditions due to the high price of the selected coating material. If the predicted production volumes are achieved, the savings can reach up to 10-12 CZK per linear metre of profile.
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Construction and production of modeller CNC milling machine
Krejčí, Miloš ; Slaný, Martin (referee) ; Zemčík, Oskar (advisor)
The purpose of this bachelor thesis is to design and manufacture a modeller CNC milling machine. The work includes introduction of modeller CNC milling machines available on the market and their comparison. The thesis also contains custom design of modeller CNC milling machine, followed by prototype manufacturing and testing. The design includes calculation and experimental verification of stepper motor parameters, frame sizing, load simulation and selection of suitable control electronics. A prototype was designed to verify concept, manufacturing technologies and cost.
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Leases under IFRS and czech legislation
Krejčí, Miloš ; Randáková, Monika (advisor) ; Vašek, Libor (referee)
Thesis deals with leasing transactions in view of czech accounting and tax legislation and in view of International financial reporting standards. Emphasis is placed on classification of leases as a finance lease and operating lease and especially on different impact of finance lease transactions on the financial statements of lessor and lessee prepared in accordance with czech legislation and IAS/IFRS.
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