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Production of a replica of the switch cover using the investment casting method
Klátil, Ondřej ; Kaněra, Miloš (referee) ; Jelínek, Radim (advisor)
The work is focused on the production of a replica switch cover for the ČZ 250/471 motorcycle from 1974. The theoretical part of thesis includes a review of the production of permanent and expendable patterns, mold making, various casting methods, additive technologies categorized under rapid prototyping methods, and a description of scanning methods. In the experimental part, the informations from the theoretical part are verified through the experiment of producing the switch cover replica. The original part was first scanned, then the scan was edited and converted into a solid model, which was then printed on an FDM printer as a expendable pattern for the investment casting method using shell molds. These castings were then evaluated against the originals. At the end of the experiment, surface defects were found, the causes of which could not be definitively explained. Subsequently, various production methods were outlined for specific ranges according to the number of products.
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Use of 3D printed models for Replicast technology
Komenda, Lukáš ; Štěpán, Radim (referee) ; Bořil, Petr (advisor)
This bachelor's thesis is focused on the possibility of casting a 3D printed model using Replicast® technology. The theoretical part provides an overview of the application of rapid prototyping technology in foundry industry and the advantages of the Replicast® process. The practical part is focused on the production of a 3D printed model, the creation of a shell, and subsequent casting. In the conclusion of the thesis, the individual results are compared and the best approach is evaluated.
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Casting production of an optimized inlet shape of pneumobile engine pneumatic cylinder
Bouchner, Jan ; Záděra, Antonín (referee) ; Krutiš, Vladimír (advisor)
Presented bachelor's thesis deals with production of a pneumatic component using hybrid investment casting technology. This method combines investment casting with additive technologies. The manufactured component, called cap-end, supplies compressed air to the pneumatic drive of a racing car. Complex design of this component was created using computer fluid dynamics optimization. This design was delivered by the Pneumobile racing team Brno. Presented thesis further contains a technological consideration taking into account solidification direction, on the basis of which the delivered geometry was modified. Manufacturability of the component is verified by a numerical simulation in the ProCAST environment. This thesis also describes printing process of a combustible model using fused deposition modelling technology. The combustible model is used in the production of a ceramic shell. Using said ceramic shell AlSi10Mg alloy casting was made. The component had to meet the requirements for leak tightness after machining and subsequent assembly. The leak tightness is assessed here as a pressure drop in a closed circuit measured over time. Furthermore, the effect of the cap-end on properties of the racing car in relation to the original geometry was investigated. The comparison is made on the basis of the race car's unloaded wheel speed measurements. The outcome of the thesis is a functional cap-end component that validates the results of a scientific article published by members of the Pneumobile racing team Brno.
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Matlab Simulink Code Generation Support For Lin
Communication
Kozovský, Matúš
The microcontroller units often use communication buses to interface with sensors or actuators. The communication bus must be selected with respect to communication speed, reliability and also overall solution price. Transmitted data needs to be organised according predefined structures in case of using any communication. Combination of rapid prototyping tools for automatic code generation and communication busses can be problematic for this reason. This paper deals with possibility to use MATLAB/Simulink code generation for communication interfaces. Local Interconnect Network (LIN) interface was used for testing. Same principles can be used also for Controller Area Network (CAN) interface. Presented method can simplify using of communication buses in Simulink.
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Product Innovation Using CAE and Additive production
Bočková, Pavla ; Videcká, Zdeňka (referee) ; Vyroubal, Petr (advisor)
This bachelor thesis is focused on the design and construction of an innovated shape of the clamping mechanism of the one-handed dumbbell. The clamping mechanism model and other parts of the dumbbell are modelled using the parametric modeler called SolidWorks. The resulting model is printed on the Ultimaker 2+ 3D printer using the Fused Depositionion Modeling method. The thesis also includes the introduction of selected CAx systems, the characteristics of Rapid Prototyping as well as the FDM method and materials used. The end of the thesis is completed by the technical economic evaluation of the production of the proposed prototype of a one-handed dumbbell.
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Application of modern technologies for the production of spare parts airsoft guns
Král, Ondřej ; Zemčík, Oskar (referee) ; Jaroš, Aleš (advisor)
This bachelor thesis describes design and manufacture of airsoft spare parts. Selected spare parts were hammer and spring holder, which were designed in 3D parametric software Autodesk Inventor 2016. Chosen method to manufacture spare parts, was Fused Modeling Deposition, which is part of Rapid Prototyping technology. The device for producing parts was 3D printer uPrint. The manufacture of silicon mould was based on printed spring holder, which was used for parts manufacture, by casting plastic materiál. Thesis is completed with a technical-economical evaluation, in which it was found that the silicon mould casting is more profitable in the production of more parts.
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Design of replicated production of the selected part and verification of shape and dimensions using optical 3D scanning methods
Šrenk, Jakub ; Fiala, Zdeněk (referee) ; Slaný, Martin (advisor)
This work is engaged in the prototype casting of resin with usage of reverse engineering technology and rapid protopyping. Surface quality and dimensional accuracy was optimized in a production process. The technology of 3D scanning, rapid prototyping, soft tooling and finishing methods is discussed in the theoretical part. Then in the practical part there is analyzed manufacturing process of the selected component for replicated production. 3D scanning, additive technology, soft tools and surface finishing methods were used in the manufacturing process. In the last step, the dimensional accuracy is evaluated and also the technology for serial and piece production was chosen.
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Overview of rapid prototyping technology for metallic parts
Žaba, Tomáš ; Nevrlý, Josef (referee) ; Paloušek, David (advisor)
The aim of this bachelor paper is to make a survey of Rapid Prototyping methods which enable workability of metal materials. It explains the principles of older methods as well as the latest ones including Selective Laser Sintering, Direct Metal Laser Sintering, and Laser Engineered Net Shaping, Direct Metal Deposition and Electron Beam Melting. The paper presents the examples of practical applications on component parts. The latest equipment and machinery available on present market and their technical specification are listed at the end of the description of individual methods. The paper is completed with visual documentation. The final part of the paper contains the analysis of gained pieces of knowledge and future possible development is outlined.
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