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Production technology for selected part of the hydraulic rolling machine
Mynář, Josef ; Strejček, Jan (referee) ; Zemčík, Oskar (advisor)
Description of the machine with a closer analysis of a structural node, in which is situated the produced part. Design, calculation and the choice of blanks for the two variants of the production. The choice of machines for piece and series production, the choice of instruments and gauges for mass production. Developing manufacturing processes with the choice of times in the piece production and the calculation for mass production. Technoeconomic assessment of the costs of semi-finished products and variants of production.
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Technology production of knife for demolition shears
Měrka, Tibor ; Strejček, Jan (referee) ; Osička, Karel (advisor)
The Bachelor’s thesis analyzes the scrap metal processing technology with focusing on shearing. The thesis also describes technological process in production of a tip knife, which is designed for demolition shears manufacturing in Italian company that specializes in the manufacturing of equipment and systems for the processing and recycling scrap metal. The end of the thesis includes proposal for new production technology and its techno-economic evaluation.
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The influence of geometry and cutting tool parameters on residual stress during machining of the pressure containers
Berka, Martin ; Kouřil, Karel (referee) ; Strejček, Jan (advisor)
This thesis deals with the influence of changes in cutting parameters and tool geometry on residual stress inside the material. I examine the influence by deep drilling. Changing the cutting parameters concerns the alteration of the tool feed and the pressure of the coolant during the process. The influence of tool geometry is studied by using two different single edge cannon drills. The research was realized in cooperation with Bosch Diesel Ltd. The theoretical part includes a description of the injection system, in which a high-pressure container is contained. The high-pressure container was used to evaluate the influence of the cutting parameters and tool geometry on residual stress. Furthermore, the theoretical part deals with the deep drilling technology used and the theory of residual stresses. The practical part shows the measurement parameters and the corresponding results. In the conclusion of this thesis, a technical-economic evaluation of the measurement is conducted.
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Optimization of powder-coating process resulting in a reduction of labor intensity of finishing components in gas insulated substation - GIS
Svoboda, Tomáš ; Kubíček, Jaroslav (referee) ; Strejček, Jan (advisor)
The diploma thesis deals with the optimization of powder-coating process resulting in a reduction of labor intensity during finishing components in gas insulated switchgear (GIS). The thesis is divided into five main chapters that describe characteristic and function of gas insulated switchgear (GIS), the theory of powder-coating, including mechanical and chemical pretreatment of surfaces, the studies of contemporary quality of coating process in the company ABB s.r.o. with classification of components of GIS according to their function. This chapter also contains detailed analysis of section of coating process during the processing of selected parts (housing and conductor). The thesis also contains detailed studies of masking of surfaces at coating parts, specifies the most common defects and determines the main cause presented in a well-arranged chart, design, description and realization of optimization solutions with selection and evaluation of final version. An economic comparison of contemporary condition of powder-coating process with designed optimization solution is stated at the end of the thesis.
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