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Electrically conductive surfaces for 3D printed structures
Šomšák, Martin ; Mikulášek, Tomáš (referee) ; Láčík, Jaroslav (advisor)
This thesis describes the technical possibilities of coating various 3D printed structures by different coating methods. Different surface structures have been created on two models for two 3D printing technologies. Antennas on FR4 and PLA substrates were simulated. After adjusting the dimensions of the antennas in the simulations and the results obtained from the simulations, two speckle antennas on PLA substrate were created. To form the antennas, the substrate was coated with copper foil and electrically conductive spray. Subsequently, the antennas were measured, and the results were compared with the simulations.
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Design of Alternative Production of a Part using 3D Printing Technology
Verner, Tomáš ; Zeman, Břetislav (referee) ; Sedlák, Josef (advisor)
This bachelor thesis deals with the design of an alternative production of a part (sprocket cap). The aim of the thesis is to design an alternative production of the part using 3D printing, to simplify and cheapen the production. The theoretical part includes a description of the existing manufacturing technology and the additive technology (FFF) that will be used for printing the part. Another part of the theoretical work is devoted to the description of additive materials and the subsequent selection of a suitable material, which is PETG material. The practical part of the thesis is devoted to the structural redesign of the part for 3D printing technology and subsequent printing and testing. The thesis concludes with a techno-economic evaluation. The part printed using 3D printing technology performs better from a technical and economic point of view than the original part.
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Progresivní materiály v aditivní výrobě
Holan, Aleš
The bachelor thesis focuses on the additive technology of 3D printing. It presents a basic overview of material, individual production processes and prospective trends of utilization. The practial part consists of the process of producing a prototype component, including intial design, software editing and the process of printing. The final part evaluates the materials chosen for the specific prototype and presents the results of a chemical resistence test conduc-ted specifically for the needs of the component.
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3D model Wanklova rotačního motoru pro výuku technických předmětů
BAŠTÝŘ, Jan
The bachelor thesis deals with the technique of 3D printing and materials suitable for its printing is currently widespread. The theoretical part of the work is focused on the history of 3D printers, a description of selected 3D printers and their comparison, and finally contains an overview of selected materials suitable for use in printing 3D models. The practical part deals with the use of 3D printing for the needs of teaching technical subjects. Within this work, a scale model of Wankel's engine is created for use in teaching.
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Zjišťování pevnostních charakteristik výrobků u 3D tisku
ČECH, Jan
This work inquires into the 3D printing by means of FMD technology. There are compared PLA and Pet-G materials. Further, the horizontal and the vertical printing positions are compared. The results are influenced by the height of the layer as well. There are tested higher layer of 0.25mm and lower layer of 0.15mm. The results are acquired by tensile test.
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A device for welding 3D printing filament
Roden, Lukáš ; Škaroupka, David (referee) ; Krčma, Martin (advisor)
This bachelor’s thesis deals with filament welding in 3D printers. During the print, there is often an extra part of the filament, that can be no longer used due to its small length. In this thesis I deal with the equipment construction for connecting these remnants of the cord or even longer pieces. In the first part is a search which deals with types of 3D printers, material of filaments and the issue of the welding process. In the second part, the acquired knowledge is used to create your own device design. More precisely, the analysis of the usability of individual materials and construction designs. In the last part I deal with a specific form solution of individual components.
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Filament recycler for FDM 3D printers
Neuwirth, Karel ; Bayer, Robert (referee) ; Jaššo, Kamil (advisor)
The first part of the project is focused on various types of 3D printing technology, especially FDM technology, where is possibility of recycling printed material. Next is a description of the most used materials for printing by FMD technology and a description of the production of filament using screw extruders. Several devices were selected for recycling and production of filament from FDM printing, for which their technological procedure in recycling is described. Subsequently, the work deals with the design of a device for melting plastic using a screw extruding device, including the possibility of measuring and regulating the output. In the last part, according to the design, the device is assembled and tested.
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3D printing large plastic stand
Sklenář, Michal ; Sedlák, Josef (referee) ; Kalivoda, Milan (advisor)
The bachelor thesis deals with the design and subsequent production of a large plastic stand on a 3D printer. The goal of the bachelor thesis is to divide the production process of the stand so that it can be realized it on a 3D printer workspace. Subsequently, there is an effort to save as much material as possible, but to ensure the full functionality of the stand as well. The topic of the thesis also shows defects and errors that are connected to the process of production and tries to outline their possible solutions. In conclusion, the financial side of production is evaluated, and the properties of the designed stand are compared with stands that are mass-produced. The whole set and design of the stand are conceived for the band "Zoo". The design of the stand is therefore set to produce only one piece.
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Filament mixer with variable contribution of input materials for FDM 3D printers
Hráček, Michal ; Jaššo, Kamil (referee) ; Bayer, Robert (advisor)
This bachelor thesis deals with the theory of 3D printing and 3D printers and the possibility of mixing two filaments. The work is focused especially on extruder, which is one of the main parts of 3D printer, but also on mounting and cooling the print head. In the extruder, the filament is fed and subsequently melted. Furthermore, the work mentions the problems of stepper motors, describes the used components for the practical part of the work and implementation of the entire device from PCB design, writing FW, to design mechanical parts.
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