National Repository of Grey Literature 286 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Design of production technology for cone rotary mechanism
Knápek, Merlin ; Chladil, Josef (referee) ; Sliwková, Petra (advisor)
Bachelor's thesis is focused on design of production technology for protype of rotary bearing for children's excavator, which consists of conical pin and conical bushing. Specified production volume is 1 piece. Material was changed for both components to stainless steel AISI 303. From concidered technologies was chosen machining, specifically machining on conventional machines. Individual methods required for production were analyzed, including turning, milling, grinding, drilling and threading. Original design was modified so that only lathe and drilling machine have to be used for machining. Based on machines and chosen method were selected suitable tools, gauges and aids for production and was developed manufacturing process also acompanied by operational instructions.
Feasibility study
Beneš, Michal ; Sliwková, Petra (referee) ; Pirožek, Petr (advisor)
This thesis develops a feasibility study for the introduction of a new product. The aim of the thesis was to evaluate the technical and economic feasibility of the project. With the help of market research and analysis of the external environment, the current market situation was mapped and a SWOT analysis was performed. In the technical part, the design of the production process was developed and the production time was determined. The economic part quantified the cost and price of the finished product. In the techno-economic evaluation, the return on equity was determined, the break even point was determined and the risks of implementation were found and arrangements to minimize them were proposed.
Rationalization of pinion production technology
Kollert, Josef ; Sádlo, Dominik (referee) ; Sliwková, Petra (advisor)
The content of this work is the rationalization of the technology of gear production associated with the grinding operation.The aim was to replace and improve the existing operations of grinding the diameters and the cone of the gear.The gear described in the work is contained in the gearbox for rail vehicles.The first part of this work is focused on a general analysis and description of the used machining and thermal and chemical-thermal processing technologies.In the second part, the existing machines and specific procedures for the production of the gear are explained and presented.In the next part, an evaluation of the current production technology is carried out, the weak points are found and a proposal for a new technology is made, resulting from the investment in a new machine.The last part is a technical and economic evaluation, where the final calculations and savings are presented when using the new grinder.
Rationalization of holder production
Šidlák, Jaromír ; Zemčík, Oskar (referee) ; Sliwková, Petra (advisor)
This thesis presents a proposal to replace the weldment of a mount with a workpiece. The mount is part of a designer light and 200 of them are manufactured every year. The mount material has been changed from stainless steel 1.4301 to aluminium alloy EN AW 6082. Design modifications have been made to the part to improve its functional properties and reduce machine time when it is made. A semi-finished product from a cold-pressed and drawn round bar according to ČSN EN 755 – 1 was determined and its size was calculated. The degree of material usage was then determined, as was consumption of the material for the year’s production, which amounts to 6 bars 3 metres long. Machinery from the company’s portfolio was proposed for the modified part. The majority of the part is produced on a KL 285 CNC turning centre. Appropriate machining tools were chosen for the selected machines. The work includes the complete technological production process as well as the CNC programs for machining the part. They were created directly at the machine using the Sinumerik 828D control system, specifically its Shopturn superstructure. After debugging the program, the necessary machining tools were placed as appropriate in the machine. Prototypes were then made to verify that the technology was designed correctly and that the parts were manufacturable.
Design of rationalization of distribution block production
Kobza, Tomáš ; Zemčík, Oskar (referee) ; Sliwková, Petra (advisor)
This thesis focuses on the proposal of rationalization of the production process of the specified part from the company WT-PRO Czech s.r.o. The introductory part is devoted to the description of the specified part and the analysis of the existing production process, focusing mainly on machining operations. Theoretical part is focused on CAD/CAM systems, machining technologies - milling, drilling and threading, which are essential for the production of the component. It also focuses on tooling materials and chucks. In the practical part, the rationalization of the production process is proposed, which concerns two machining operations. A machining centre is specified for these operations, for which new clamping, new tooling, operating instructions and NC codes have been designed in GibbsCAM. The resulting design is described in the new manufacturing process. Finally, a techno-economic evaluation was carried out.
Design of production technology of a planetary gearbox carrier
Skopalová, Simona ; Dvořáková, Jana (referee) ; Sliwková, Petra (advisor)
The diploma thesis deals with the technological design of the production of the carrier of the planetary gearbox. The thesis describes the used production technologies, which include turning and milling. Furthermore, the thesis is focused on the technological design of the production of a part from a semi-finished product in the form of a bar and forging, the choice of machine and tool equipment and technological-economic evaluation. At the end of the thesis, these variants are compared and evaluated.
Design of production technology of a one-handed axis and metal nut
Kovařík, Michael ; Osička, Karel (referee) ; Sliwková, Petra (advisor)
This thesis is focused on design of production technology of specified components by machining. To introduce the issue the introductory part of the work is devoted to the description of specified components, that is one-handed axis and metal nut, where emphasis is put on construction technology, options of production and components material. Introductory part is followed by the research part that is the theoretical basis for the practical part. This part of the work is focused on machining technologies – turning, milling and drilling that will be used for the production of specified components, then it deals with tool materials, the chosen surface conditioning and heat treatment. The main part of the thesis is a practical part in which the manufacturing process of the given components is proposed. The manufacturing process is focused on the choice of a suitable blank, machine tool, tools, the way in which the components will be measured and checked, then on the development of production technology and the creation of the NC code in the given control system. In conclusion of the work a technical and economic evaluation of the proposed process is presented.
Proposal for rationalization of production technology of a bronze part
Konůpka, Tomáš ; Kolomý, Štěpán (referee) ; Sliwková, Petra (advisor)
The subject of this diploma thesis is a proposal for rationalization of production technology of part made of bronze material CuSn12. Firstly, the manufactured component and the current state of production, including machine times, are described in detail. In the following part, the manufacturing technologies used are described, including turning, drilling and milling. In the next part, the proposal of the production rationalization and the analysis of the time consumption of each operation is described in detail. The last part of the thesis deals with a technical-economic evaluation, including a comparison of the current and rationalised situation. Finally, the achieved objectives and the contribution of the proposal to practical application are summarized.
Production technology for parts of a winder gearbox
Riasnyi, Artem ; Sliwková, Petra (referee) ; Zemčík, Oskar (advisor)
The thesis focuses on the design of the production of two key gearbox components – the output shaft and the gear wheel. The aim was to optimize the production of these components through the selection of suitable machining equipment, cutting tools, and cutting conditions. Two production variants with different replaceable carbide inserts for lathe knives were compared for the output shaft. For the gear wheel, variants with different drills and carbide inserts for groove pinning were compared. The results indicate that the first variant of the output shaft production is advantageous in terms of both time and costs, whereas for the gear wheel, the second variant is advantageous in terms of time. Further optimization of cutting conditions is recommended, along with consideration of alternative tool selection to further improve efficiency and reduce production costs.
Rationalization of production to improve roughness of a selected surface of rectilinear hydraulic motors
Urban, Jan ; Píška, Miroslav (referee) ; Sliwková, Petra (advisor)
In this paper, the influence of cutting parameters, machining strategies and material properties on the resulting surface roughness of a selected surface of a groove for a seal on the cover of a straight-line hydraulic motor are investigated. Based on the analysis of the results of the initial experiments of the existing production, specific measures are proposed to rationalize the manufacturing process. The effectiveness of the proposed measures is verified by further experiments carried out on real workpieces under industrial production conditions under the same manufacturing conditions. Subsequently, the results of the methods are compared with each other. The inclusion of a time delay between radial and axial feed during the finishing operation of the grooving had a very positive effect on the surface quality. The surface roughness values not only came within the prescribed tolerance but well below it. The economic evaluation shows that the rationalised production process does not have a noticeable effect on the overall cost of production and hence the results of this thesis are recommended for implementation in practice.

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