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3D printing of a non-dismantling assembly
Halíř, Jan ; Drbal, Martin (referee) ; Kalivoda, Milan (advisor)
The bachelor's thesis deals with 3D printing of prototype non-disassemble assemblies. In the theoretical part, the individual most used printing technologies, the types of plastic and metal materials used, printers, 3D scanners, and their use in medicine, construction and engineering was described. In the practical part, FDM technology was used to print the ball joint, the french key, and the rolling bearing, the functionality of which were tested. In the last part, the results of the prints were evaluated based on the selected parameters and material about their functionality.
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Analysis of the mechanical properties of plastic materials for 3D printing
Jelínek, Jan ; Bártková, Denisa (referee) ; Koutný, Daniel (advisor)
This work will solve the mechanical properties of materials used in the FDM technology.Thetensile and flexuralmechanical properties depending on theprintingparameterswillbetested. Fortestingare used three types of sampleswithdifferentrastersforeachof the tests. The first type of raster is characterized by a fundamentalparameter, whichisoffered by themanufacturer. The second type of raster is characterized by a high number of thin-fiber material and a higherconcentrationof air gaps. The third type of rasterischaracterized by minimalnumberof air gaps and a minimum number of thick-fibers in thecross-sectionalofsample. These typesofsamples will be tested on selected materials. The results of individual tests willbecomparedamongselectedmaterials and types of samples. The aim of this work is to show the dependence of mechanical properties on the type ofprintingstrategy.
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Experimental evaluation of appropriate FDM technology for UAV production
Hubáček, Jan ; Klement, Josef (referee) ; Dvořák, Petr (advisor)
This bachelor thesis deals with material analysis and design of technology for Fused Deposition modelling 3D printing method of unmanned aerial vehicles. Nine materials which are suitable for this application has been tested. Tension test has been used to determine mechanical properties of each material according ISO standards for plastics. Material had to met certain criteria, which are important for 3D print of aeroplanes, to pass to the next stage of experiment. Next three-point flexural test of wing has been used. In this test has been tested two glued sections of wing root and one separate section of wing. Results of tensile test and flexural test were compared and evaluated. It was discovered that material PLA, which is commonly used for printing aeroplanes, has not been overcome. Materials that seems to have better mechanical properties has been disadvantaged for its bad properties in 3D printing process.
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Properties of FDM technology 3D prints
Tertinská, Martina ; Přikryl, Radek (referee) ; Veselý, Michal (advisor)
This bachelor thesis is aimed at FDM 3D printing properties research. Theoretical part of the thesis sums up current knowledge about 3D printing such as it’s possible use cases and materials suitable for printing. The experimental part is focused on MakerBot Replicator Mini 3D printer and printing test samples from two different materials and testing their mechanical attributes using pull-test and break-test machinery.
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Mechanical properties of 3D printed PLA plastic parts
Novosád, Ivan ; Dočkal, Kryštof (referee) ; Paloušek, David (advisor)
3D printing is being widely used by public and also in industry. The main advantage of 3D printing is rapid making prototypes. That is the reason why it is needed to know what the mechanical properties of the material that is being used are. This thesis is about making research of knowledge about 3D printing and mechanical properties of printed parts. Main task was comparing materials used in 3D printers and find out which producer makes materials with the best tensile strength. 5 producers were selected to be compared in this test. From each producer was bought PLA filament in natural colour, this material was then used to print testing specimens. All specimens were tested on maximum tensile strength and Young's elastic modulus and then was calculated the confidence interval for each producer.
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Analysis of the mechanical properties of plastic parts realized by 3D printing
Krejbychová, Adéla ; Benešovský, Marek (referee) ; Vosynek, Petr (advisor)
This bachelor thesis deals with the analysis of mechanical quantities of PET-G samples which were created by using 3D printing. The problem was solved experimentally. The samples were printed by using the FDM technology (Fused Deposition Modeling). Mechanical properties were measured by the tensile test and the measured quantities were further analyzed statistically. The influence of the pigment, the material manufacturer and the effect of setting the process parameters on the actual construction of the samples were investigated. On the basis of the carried out analyses it was discovered that the samples printed horizontally in the XY plane with a 45° / -45° fill angle from Devil Design had the best mechanical properties.
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Design of 3D-printed Unmanned Aerial Vehicle
Sladký, Martin ; Jetela, Václav (referee) ; Dvořák, Petr (advisor)
This bachelor thesis deals with the design proposal of the unmanned aircraft produced by FDM technology. The introduction is devoted to a brief overview of 3D printing technologies and the research of design strategies used for the production of 3D printed aircrafts. The second part is devoted to the design itself. Two types of winglets, wing and central part of the aircraft were designed. The individual parts of the aircraft have been converted to G-code format and printed on a 3D printer. Finally, the aircraft was assembled.
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Application of industrial robots in 3D print
Krůpa, Jiří ; Vetiška, Jan (referee) ; Bražina, Jakub (advisor)
This bachelor thesis deals with the application of industrial robots in 3D printing, especially FDM technology. The introductory part of the thesis describes the basic types of additive technologies usable for robotic 3D printing. The next chapter describes some unconventional methods of 3D printing, using more than three degrees of freedom. The work also presents a comparison of conventional 3D printers with robotic manipulators and an assessment of the suitability of robots for 3D printing. At the end of the work are the necessary hardware and software peripherals for the modification of the robotic workstation for printing FDM technology. The ABB Robotstudio program was chosen as the software peripheral for the work example, and the procedure for creating the control code is described in the relevant chapter. This work also contains the design of printinghead for FDM technology.
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Design of screw extruder for robotic 3D printing from pellets
Machač, Radim ; Škaroupka, David (referee) ; Křivohlavý, Petr (advisor)
The goal of this bachelor thesis was to design a screw extruder suitable for 3D printing, which will be able to process cheap plastic pellets instead of filament. The first part of the work is devoted to the extruder components, the extrusion process and the use of this polymer processing technology in the design of a screw extruder for 3D printing. An extruder model is created with regard to minimum dimensions and weight. During the design, requirements were set for ease of maintenance. The result is an extruder that enables both large-volume and small-volume printing, which, according to the calculations, is equal to the printing speed of ordinary 3D printers. This work will serve in the area of the usability of cheap plastic pellets as an input material for 3D printing. With its content, it also contributes to the development of screw extruder designs suitable for use in laboratories or industry.
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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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