|
|
Building a 3D Printer
Škop, Martin ; Klepárník, Petr (referee) ; Španěl, Michal (advisor)
The aim of this Bachelor thesis is to analyse available options for 3D printing using FDM technology according to requests of cooperating company, to propose several drafts of electronical and software parts of 3D printers. This also includes their connection, functionality testing and implementation of one chosen draft. The core of this Bachelor thesis was to document the progress in building the 3D printer and also to solve arisen problems. The result of this Bachelor thesis is practical realisation of electronic part of 3D printer including basical tests. Secondary benefit of this Bachelor thesis is to explain the issue of 3D printing with the option of building custom 3D printer from PiBot components.
|
|
|
The manipulator design for KAMBot robot
Popovský, Pavel ; Žalud, Luděk (referee) ; Burian, František (advisor)
This bachelor’s thesis deals with design and construction of small robotic manipulator for KAMBot robot using a 3D printer. The work also includes the design of a control unit and the electronics needed to support communications via the I2C protocol. The theoretical part documents the choice of mechanical and logical arrangement with mathematical analysis and describes the I2C protocol. The practical part describes the structure of the manipulator, the design of electronics to the PCB and implementation of I2C protocol. Last part documents the control of the manipulator and final results.
|
|
|
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.
|
|
|
Universal Cloud-Based 3D Print Slicer
Vejčík, Jakub ; Zbořil, František (referee) ; Kočí, Radek (advisor)
This bachelor thesis deals with the proposal and implementation of a cloud tool for preparation 3D models for 3D printing. 3D printing become a part of our lives and it is getting into schools, where it combines the digital world with the physical world. Nowadays schools have not sufficient computational power to handle demanding 3D models for 3D printing. This ascertainment has led me to create a cloud tool, because cloud provides sufficient computational power and it can be shared beetween multiple users at the same time. The cloud tool solves the problem of insufficient power to translate 3D models to G-code, which understands 3D printer. Solution is done by letting the demanding computing logic on the cloud and user just edit model according to his ideas in the web interface of cloud tool.
|
|
| |
|
|
Surface treatment methods applied to 3D printed samples and their analysis
Rygl, Michal ; Dobrocký, David (referee) ; Sedlák, Josef (advisor)
The presented paper deals with the issue of smoothing parts produced using FFF 3D printing technology. The aim of the paper was to compare technical surface treatment methods and economic side. Emphasis was placed especially on the degree of reduction of surface roughness while maintaining an acceptable level of process costs. Chemical smoothing, local CO2 laser melting, tumbling and surface treatment based on filler spraying were used to smooth the plastic prints. Prints made of ABS, PLA, PolySmooth and PolyCast were subjected to the smoothing process. Printing parameters were first determined for individual materials and test samples were produced on their basis. After determining the process parameters for individual surface treatment methods, the finished surfaces were measured with a profilometer. Based on the results, the chemical etching method was evaluated as the most effective surface smoothing method. Due to the etching of the surface layer of the sample made of PolySmooth material, the surface roughness parameter Sa was reduced in diameter compared to the reference sample. by 99,56 %. The least effective method was tumbling technology, which showed an average roughness reduction of 30,07 % in the case of ABS. However, the technology based on grinding parts with grinding stones had the lowest process costs for finishing the samples. Technical The economically best choice of all tested combinations was the technology of chemical etching of ABS polymer prints. The results and conclusions of the work will serve not only to select the finishing operation and material for specific applications of prints in practice, but also to expand the possibilities of using additively produced components.
|
|
|
Design and manufacture of a sports handle for wristwatches
Ábel, Pavol ; Gregor, Lukáš (referee) ; Zemčík, Oskar (advisor)
The bachelor thesis deals with design and production of a sports watch holder using 3D FDM printing technology. The aim of the work is to design, manufacture, technically and economically evaluate the production of the holder model. The first part deals with the search of FDM printing and printers. In the following sections, it covers the design and subsequent production of the holder.
|
|
|
3D FDM printer Rebel II and parameters of print
Pištek, Patrik ; Zouhar, Jan (referee) ; Zemčík, Oskar (advisor)
This work deals with a RepRap 3D printer. The introductory chapter describes rebuilding, the reason of the rebuilding and basic components of a 3D printer. The following is a selection of lesser-used materials PETG and nylon. The individual chapters summarized reviews of experimental studies and the types of samples used in the testing of similar machines. Based on this information the author design size and shape of the sample for the second experiment, chosed relevant technological parameters and proposed plan of the experiments. Investigated parameters are temperature of the nozzle and printing speed. Experimental part of this work includes two experiments. In the first experiment, thin-walled objects by width of a single fiber were printed. The surface quality of the fibers was observed under a microscope. The second experiment evaluated the dimensional variations of the samples in dependence on the aforementioned parameters. Samples were scanned at the office 2D scanner and arithmetic mean of surface roughness Ra was measured by roughness meter on the side and top wall of the samples. The results and recommendations of the author are summarized in separate sections. The temperature and speed affected the quality of the surface of extruded fibers. The effect of temperature on the quality of the bond between the fibers has been significant. Print speed heavily influences the dimensional accuracy and deformation of geometric elements of the sample. The effect of temperature on dimensional accuracy was much less pronounced. In discussion part are expressed some ideas for future experiments. The conclusion summarizes all the gains of this work.
|
|
|
Composite printing for 3D FDM printer
Műller, Jakub ; Sliwková, Petra (referee) ; Zemčík, Oskar (advisor)
This diploma thesis deals with the study of 3D printing based on the FDM method. This method focuses on the possibility of using two extruders it means that the composite parts can be printed. This diploma thesis describes the available variants of composite printing currently on the market. Based on the gained knowledge and the availability of 3D printers and software, individual variants of composite parts were printed. A tensile test was performed on these samples to determine the strength characteristics. Additionally, compatibility and adhesion of two selected materials were tested. Based on the testing is made an evaluation of the achieved results, effectiveness and feasibility.
|
|
|
The effect of a nozzle channel on printing parameters of FDM 3D printer
Rygl, Filip ; Prokeš, Tomáš (referee) ; Zemčík, Oskar (advisor)
This bachelor thesis follows up the influence of the nozzle channel on different parameters of printing using FDM / FFF method. The first part briefly describes the inclusion of this method in additive technologies. Then follows the description of the device for this involved method, printing parameters and research of used polymer materials. In the next chapter is proposed an experiment to test selected print parameters and there is described used equipment. The following part documents the outputs of the tests, their evaluation and comments.
|
guest ::
