|
|
Contactless sealing element
Bryksí, Petr ; Navrátil, Václav (referee) ; Omasta, Milan (advisor)
This bachelor's thesis deals with the design of a labyrinth seal element for a tram gearbox. The element should create the most effective seal in the smallest possible space. The work contains a research part dealing with the possibilities of shaft sealing and applicable 3D printing technology. The second part deals with the analysis of the current solution of tram gearbox seals. The construction part deals with the design of the most suitable material and shape to create the greatest resistance, against the ingress of dirt into the gearbox. The result of the work is a model ready for 3D printing and subsequent application, for testing in operating conditions.
|
|
| |
|
|
Modification of printhead for 3D print of concrete
Diakov, Jakub ; Paloušek, David (referee) ; Vespalec, Arnošt (advisor)
This bachelor’s thesis deals with the engineering design of the adjustment of the jet used for continuous 3d printing of the concrete mixtures which are used for the printhead which already exists. The main function of the jet is to shape and deposit the printed mixture in a way that it corresponds to the required geometry of the product. The thesis contains a research focused on the issues of 3D printing such as properties of concrete flow, influence of the shape and size of the end of the jet on printing and individual mechanisms related to the optimal use of these jets. The second part of the thesis contains the analysis of knowledge and the determination of the appropriate parameters for the construction of the jet. These parameters influence the geometry and the quality and effectiveness of production. The practical part of the thesis is focused on the possible structural design of the jet adjustment based on the knowledge from the research part of the thesis. The practical part also deals with the design of the jet in a way the flaws and imperfections occurring in case of the previous constructions of the jets. In case of use of the jet designed in the corresponding way, the production can be substantially accelerated, and the quality of products can be substantially higher.
|
|
|
Design of oxygen filter for 3D metal printer
Ondra, Martin ; Paloušek, David (referee) ; Suchý, Jan (advisor)
In medical branches alloys on the basis of titanium are commonly used, however, in some of the medical applications it emerged that the usage of alloys on the basis of magnesium is more convenient, for example in orthopaedic surgery for the implant fabrication. Managing of processing of magnesium using the technology Selective Laser Melting would enable to produce complex structures supporting the production of cells and recovery of bones. One of the problems when processing the alloys on the basis of magnesium is the production of residual oxygen. This problem can be solved with the usage of an oxygen filter that is integrated in the circuit of inert atmosphere. This bachelor´s work deals with the construction of this filter for 3D metal printer SLM Solutions 280HL v1.0. This device enables to filter up to 123 m3/h of the gas with the output purity 100 ppt (1,0 × 10-8 %). The device separates oxygen continuously during the whole manufacturing process. The construction of the device enables the attachment to other SLM Solutions company machines.
|
|
|
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.
|
|
|
Design of recoating system for processing of two metal powders using 3D Printing
Guráň, Radoslav ; Němeček, Stanislav (referee) ; Koutný, Daniel (advisor)
The thesis deals with the design, construction and testing of two different metal powder coating equipment, which is able to work with SLM 280HL metal 3D printer. Since the field of multimaterial metal printing by selective laser melting (SLM) has not been significantly investigated yet, an overview of existing patents and possible approaches to the solution has been developed. The device has been successfully designed and a series of tests was carried out defining the issue of applying an improved head that uses a nozzle and an eccentric vibration motor. Based on the experiments performed, the coating parameters of the multimaterial layer of FeAm and 316L materials were defined. A control system for the partial process automation was created for the proposed device. The device was implemented in a printer that demonstrated both the ability to apply a single multimaterial layer of at least 50 m thickness, and the ability to produce a 3D multimaterial component comprised of up to 200 layers and containing material change across all axes.
|
|
|
Using 3D printing in HVAC
Malovaný, Ondřej ; Rubinová, Olga (referee) ; Uher, Pavel (advisor)
In the experimental part of this thesis there is an assessment of pressure bearing capacity of cylindrical nozzles printed using a 3D printer. In the theoretical part of this diploma thesis there are outlined the types of additive technologies focusing on the development of FDM printers, open designs and RepRap project. Descripti-on of the production process of 3D printing and application of additive technolo-gies in the field of HVAC. In the project part, the design of the forced ventilation of the Sports Hall is solved. The object is assessed in terms of heat losses and profits for priority rooms of functional units. Heat load coverage is carried out by air-conditioning equipment. In addition, a project is drawn up which contains all the text and drawings, including technical specifications and regulatory schemes.
|
|
|
A study on sintering technologies of Ti-6Al-4V alloy for implants
Bučková, Katrin ; Ohnišťová, Petra (referee) ; Píška, Miroslav (advisor)
This work contributes to the problem of individual replacements of worn human joints by applying new types of implants and materials, made using modern additive technologies (melting of metal powders by laser and electron beam). The main attention is paid to the method called Electron Beam Melting used in the ARCAM Q10plus. Analysis of samples of the sintered Ti6Al4V - ELI alloy is made from the point of view of production precision and quality after sintering in different technological modes and the surface quality reached after turning and tumbling, including measurement of other physical quantities.
|
|
|
Usage of Modern Technologies for the Design of the Production of Push up Stands
Remer, Tomáš ; Kouřil, Karel (referee) ; Sedlák, Josef (advisor)
This bachelor thesis is focused on the design of the design of push up stands, which are made using the additive Rapid Prototyping technology. The manual beam design is developed in CAD systems, specifically in the Autodesk Inventor parameter set. The model of these beams is made on Fortus 450 mc, which uses Fused Deposition Modeling. The thesis also includes the characteristics of Rapid Prototyping, along with the evaluation of the most used materials and methods. The end of the thesis is completed by the technical-economical evaluation of push up stands, including comparison of the costs of implementation with other organizations.
|
|
|
Heat treatment of maraging steel processted by SLM
Valenta, Jakub ; Vaverka, Ondřej (referee) ; Koutný, Daniel (advisor)
The bachelor thesis deals with the study of the heat treatment of the maraging steel 1.2709 (DIN X3NiCoMoTi18-9-5). The first part of the work is survay of studies that focus on heat treatment of maraging steel made by forging or Selective laser melting technology. Based on that section, a heat treatment was designed by which the samples manufactured on ProX 300 from company 3D Systems and M2 Cusing from company Concept Laser were treated. The effect of heat treatment on the mechanical properties of the samples was subsequently tested by tensile testing and metallographic analysis. The test results of both sets of samples were compared with each other and with the results of other studies and the impact of the described heat treatment on the material was evaluated.
|
guest ::
