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Dry electrolytic polishing technology of Ti-6Al-4V alloy
Karešová, Pavla ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
The main part of the thesis deals with the finishing method of machining called DryLyte electrolytic polishing method. General concepts for measuring surface structure are also mentioned. The experimental part deals mainly with the study of the surface texture parameters of the turned sample before and after the application of the DryLyte method. The work shows that this is a very promising method for finishing metal-bonded materials, which can be used to obtain mirror-gloss surfaces, while the method itself does not require bulky and expensive equipment. In terms of surface finish quality, this method results in a reduction of surface roughness and an improvement in both surface and volume characteristics, always to the benefit of strengthening the core of the material.
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A proposal of technology for the two-disc home grinder
Martinka, Jiří ; Zemčík, Oskar (referee) ; Sliwková, Petra (advisor)
This bachelor thesis deals with the design of the production technology of the selected part. The chosen part comes from a two-disc home production made at the turn of the 1980s and 90s. It is a body that consists of five produced components. The work is elaborated with the body of the grinder and individual parts. A brief distribution of grinding machines and a theoretical analysis of used machining technologies. Above all, they are turning technologies, as well as drilling technologies, milling and folding. Materials and semi-finished products from which they will be produced were chosen for the individual part of the grinder body. Selected machinery and tool equipment, processed technological procedures of production for individual components of grinding agents and drawing documentation.
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Production technology for an ignition stator body of the Jawa Pionýr motorcycle
Zeman, Petr ; Dvořák, Jaromír (referee) ; Sliwková, Petra (advisor)
The Jawa 50 motorcycles, produced in several models between 1958 and 1982, were equipped with several types of ignitions. From the current point of view, they are not satisfactory. The bachelor´s thesis describes the original designs, the commercial and amateur modifications of the ignition and its advantages and disadvantages, and deals with the innovative design and variants of mounting by individual coils. The work further deals with production of the ignition body by choosing a semi-finished product, machines and tools and compilation of a technological procedure and drawing documentation.
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A proposal of insert production technology for an injection mold
Zemanová, Markéta ; Ohnišťová, Petra (referee) ; Sliwková, Petra (advisor)
This bachelor thesis is focused on the design of technology for the production of a removable insert into an injection mould. The main aim of the thesis is to elaborate the technological process of production of this component. In the introduction part of the thesis a research of technologies of production of injection moulds is carried out. The work also includes a description of the mold parts and their functions. Furthermore, the basic properties of the materials which are most commonly used for the production of inserts are described. The work is focused on the identification of mould defects in production and their possible causes. The thesis also describes the manufacturing technologies for the production of moulds.The practical part focuses on the design of a new pattern of replaceable component, the selection of tools, machines and gauges for the production of a new design of replaceable insert. A detailed assessment of the available options and the selected optimal production variants to achieve the quality and accuracy of the product is made. On the result of the proposed technical requirements, a technological procedure for the production of the insert to the injection mould. This process includes a precise description of the individual manufacturing operations, including material selection, drawing documentation, selection of gauges and tools, and programming of tool trajectories. Using these toolpaths, the production time for the selected machines was determined. The found results are compared with the production time of the same inserts of other designs and the possibilities of rationalizing the production process to achieve maximum production efficiency are discussed.
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Production of sunglases parts using a 3D FDM printer
Řepa, Dominik ; Sliwková, Petra (referee) ; Zemčík, Oskar (advisor)
The diploma thesis deals with the design of specific sunglasses produced by the FDM 3D printing method. The theoretical part contains characteristics of sunglasses and their production, characteristics of individual 3D printing methods, materials, 3D printer components and parameters for 3D printing of the model. In the experimental part, the 3D printed samples, which were heat treated to different temperatures, were subjected to a mechanical tensile test. In the next experimental part, regular sunglasses were subjected to hinge strength measurements. The evaluated parameters were evaluated and applied to the model. The resulting model was verified using FEM and a physical prototype of the sunglasses was subsequently created.
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A proposal of technology of a playing element for children's playground
Řepová, Vanda ; Sedlák, Josef (referee) ; Sliwková, Petra (advisor)
The bachelor's thesis deals with a proposal of technology of a playing element for children's playground. To create an original, playful, yet educationally dependent element, it is necessary to choose a suitable material, follow safety standards and use appropriate production technologies. Proposal of production includes description of components, selection of material, tools, machine and creation of production drawing.
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On the advanced production technology of UHMWPE joint implant part
Urbancová, Kateřina ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
This bachelor’s thesis is dealing with the problematics of individual joint replacements. The thesis summarizes the modern materials used for making artificial joint replacements, but it concentrates mainly on the plastic femoro-tibial part of the implant, usually manufactured from ultra-high molecular weight polyethylene. This material is the best choice when manufacturing the articulating surface of the joint replacement at the moment. The thesis pays attention to the polyethylene surface treatment, as the quality of the surface affects the wear of the plastic, which is critical for the implant lifespan. The thesis also focuses on analysis of the coefficient of friction of UHMWPE in contact with the titanium femoral component. Another part of this thesis is also a wear analysis of used tibial inserts made of UHMWPE and the mechanisms of wear.
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A proposal of block production technology for an injection mold
Továrek, Marek ; Dvořáková, Jana (referee) ; Sliwková, Petra (advisor)
The aim of the bachelor's thesis was to search the selected issue, the choice of tool and machinery, design of block production technology, processing of the technological process and production drawing. The first part is a brief introduction to polymeric materials and their distribution. Technologies for plastics processing are also described here, especially with a focus on injection molding technology and the associated injection mold and injection molding machine. In the second part, tool and machinery equipment, selected block material and design of production technology are designed. Part of the thesis is also a production drawing and technological process.
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A proposal of production technology of a holder
Stará, Veronika ; Zemčík, Oskar (referee) ; Sliwková, Petra (advisor)
The bachelor's thesis deals with the analysis of the current production technology of the specified holder. The new design of the production process deals with the selection of the CNC milling center, the selection of suitable tools for machining, the selection of cutting conditions and determining the length of production of individual operations. The work includes an economic comparison of both variants of the production process.
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