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Comparison of certified and lowcost material for stereolithography 3D print
Sobota, Matej ; Zatočilová, Aneta (referee) ; Koutecký, Tomáš (advisor)
The aim of the bachelor’s thesis is to define basic quality parameters and compare material impact on quality of printed products. This is a comparison certified material with low-cost material using SLA-DLP method of 3D printing to reduce production costs. The thesis is focused on the comparison of two different materials based on the results of tensile and hardness tests. The effect of the color of photopolymer on material properties is also observed.
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Application of very thin matte coatings
Hruboš, David ; Mendřický, Radomír (referee) ; Koutecký, Tomáš (advisor)
This diploma thesis deals with matte coatings for optical 3D scanning. The aim of this thesis is to find a method of spraying the mixture of TiO2 and ethanol that would provide layer thickness beyond the measurable range of the 3D scanner. A spray gun allowing deposition of atomized mixture was design. The coatings created by this gun and by airbrush gun, which is commonly used for this purpose, were compared. The matting effect, thickness and the influence of used TiO2 particles were investigated in the coatings. The paper shows method of applying coatings that ensure sufficient matting of the surface for scanning purposes, and simultaneously have thicknesses that should not affect scanning results.
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Testing of parts produced by Bound Metal Deposition technology
Hradil, Antonín ; Vaverka, Ondřej (referee) ; Koutecký, Tomáš (advisor)
Bachelor thesis on the topic Testing of parts produced by Bound Metal Deposition technology. Aim of the work is to obtain mechanical properties of products made by Studio System. We have achieved this by performing tensile test and optical metallography. The results of this thesis are mechanical properties of the tensile test. Re, Rm, E, etc. Another results are microscopic images of microstructure of material. Thanks to this work, we are getting closer to the technology Bound Metal Deposition. We approximate scientifically its mechanical properties and the microstructure of the product surface.
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Advanced filaments for FDM/FFF 3D printing
Kučera, Jan ; Vespalec, Arnošt (referee) ; Koutecký, Tomáš (advisor)
The bachelor thesis deals with the issue of FDM/FFF 3D printing with a focus on rapidly evolving new filaments and their use in industry. The aim of this work is to display a large number of filaments that have been tested and to categorize them into individual groups for future use. Selected tested materials from scientific studies address both the mechanical properties of individual pure filaments and the effect of additives to these filaments. The analysis of these works then showed that the effect of carbon fiber varies according to the type of base material and the weight percentage of filling. From a practical point of view, the results of this work can be used in the choice of material for printing models and prototypes for own usage.
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Conveyor with clamping and measuring
Polák, Aleš ; Koutecký, Tomáš (referee) ; Dvořáček, Jiří (advisor)
The first profile of the thesis describes current methods of segmenting and measuring of aluminium profile and analysis of a specific roller conveyor with a measuring device for feeding aluminium profile to a high-speed circular saw. The second section is focused on designing a new conveyor with clamps for feeding aluminium profile and designing measuring equipment based on the analysis in the first part.
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Evaluation of geometric tolerances using 3D optical digitization
Veik, Matouš ; Zatočilová, Aneta (referee) ; Koutecký, Tomáš (advisor)
Bachelor‘s thesis deals with evaluation of geometric tolerances on models obtained by 3D optical digitization. In the first part is analyzed problematics of optical digitization in the field of standardization of optical systems. Another part of the bachelor thesis describes the process of evaluation of geometric specifications. The goal of this work is to compare the evaluation of geometrical tolerances according to ISO and ASME standards and their applications in GOM Inspect software.
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3D laser scanner for demonstrational purpose
Záveský, Filip ; Zatočilová, Aneta (referee) ; Koutecký, Tomáš (advisor)
Bachelor's thesis contains construction of demonstration 3-D scanner and scanning programme, based on triangulation method. It involves basic principes of scanning, description of triangulation and basic theory of camera calibration. Thesis solves conception and final construction, also MatLab programme is described. Assembly drawing and operating instructions are included in attachement.
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Camera cover design for industrial environment
Knoth, Tomáš ; Koutecký, Tomáš (referee) ; Hurník, Jakub (advisor)
This bachelor’s thesis deals with the design of a camera housing for industrial environment. In opposite to the solutions available on the market, the designed housing is adapted to a specific measuring application, which in addition to common parameters such as thermoregulatory properties and degree of protection requires weight reduction, camera mounting stiffness, optical parameters of the window and easy maintenance of the housing. The required properties of the newly designed housing were achieved, among other measures, by minimizing the volume of steel and applying an insulation material. The resulting design has about 47 % lower heat gain and its weight is 69 % lower compared to the housings now used in this specific application. This housing will help enhance the properties of a photogrammetric system for measuring of forgings which is being developed at the Institute of Machine and Industrial Design, FME BUT.
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Automatic Generation of Scanning Positions for Sheet Metal Parts Digitization
Koutecký, Tomáš ; Druckmüller, Miloslav (referee) ; Matula, Pavel (referee) ; Morovič,, Ladislav (referee) ; Brandejs, Jan (advisor)
This thesis deals with the development of a new methodology for automatic generation of scanning positions based on a computer model of the part for digitization of sheet metal parts. Manufacture and related inspection of sheet metal parts are closely connected to automotive industry. Based on increasing general requirements on accuracy, there is also a requirement for accurate inspection of manufactured parts in serial-line production. Optical 3D scanners and industrial robots are used more often for that purpose. Measuring positions for accurate and fast digitization of a part need to be prepared as the manufacturing of the new part begins. Planning of such positions is done manually by positioning of the industrial robot and saving the positions. The planning of positions proposed by this methodology is done automatically. A methodology of positions planning, their simulation for true visibility of the part elements using reflectance model and a simulation of the positions for robot reachability is presented in this thesis. The entire methodology is implemented as a plug-in for the Rhinoceros software. High reduction of time in positions planning compared to the manual approach was observed in the performed experiments.
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