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Design of the extruder for additive manufacturing of highly-filled thermoplastics
Kočař, Jiří ; Koiš, Jiří (referee) ; Škaroupka, David (advisor)
The diploma thesis is concerned in design and realization of an experimental extruder for high-filled thermoplastic (Polybet) extrusion, which is a part of an assembly attached to the robotic arm. The result of the work is a device, that is be able to additively and continuously apply layers of Polybet. The s worm threaded extruder with modified parameters is designed with the ability to extrude the thermoplastic melt with additional fillers (sand, glass). The dimensions and weight of the extruder were minimized within limits of the robotic arm carrying capacity. The design of this thesis is an extruder which is able of large-scale additive printing of Polybet with binders (PET or PP). Another result is a mathematical model of material flow and power consumption, adjusted by results of experiments. The thesis is a research of a new part of additive production, where two types of waste material are used for the construction industry. The thesis examines the influence of fillers on power and flow rate through the extruder.
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Filament mixer with variable contribution of input materials for FDM 3D printers
Hráček, Michal ; Jaššo, Kamil (referee) ; Bayer, Robert (advisor)
This bachelor thesis deals with the theory of 3D printing and 3D printers and the possibility of mixing two filaments. The work is focused especially on extruder, which is one of the main parts of 3D printer, but also on mounting and cooling the print head. In the extruder, the filament is fed and subsequently melted. Furthermore, the work mentions the problems of stepper motors, describes the used components for the practical part of the work and implementation of the entire device from PCB design, writing FW, to design mechanical parts.
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Design of robotic workstation for automatic assembly of extruders for 3D printers
Pulicar, Roman ; Szabari, Mikuláš (referee) ; Kočiš, Petr (advisor)
Thesis is dealing with the creation of robotic worplace and its periphery. The paper is discrabing the robotic function and kinematics. The practical part of the paper shows several types of suggested robotic workplaces followed by solution processing of one selected type, where technical documentation and the calculation of production is made. The end of the paper shows economical and technological evaluation of the selected type of workplace including the price returns.
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Mechanical design of experimental extruder for 3D printing of industrial clay
Žižlavský, Vít ; Krčma, Martin (referee) ; Paloušek, David (advisor)
This bachelor‘s thesis deals with possibilities of FDM printing of industrial clay and construction of experimental extruder for 3D printing of this material. The extruder delivers 3D prints of art and design items. There is no facility to print these clays on 2019 market. The main task of this work is to create a design of the extruder. The theoretical part of the thesis deals with summary of modeling clay properties. In the practical part, the parameters of the extruder are determined, the thermodynamic properties of the clay are measured, the forces necessary for extrusion are measured at different temperatures and the piston extruder is designed. The device extrude the preheated material with a screw piston. Axial displacement of the screw is achieved by turning the nut. The device is adapted for quick replacement of the capsule with preheated clay. The resulting extruder is suitable for experimental prints of model clay with different viscosities. Using the extruder, it is possible to test the actual behavior of the modeling clay during printing and to design optimal printing parameters for its more massive use.
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Technology of extrusion
Cháma, Jakub ; Řiháček, Jan (referee) ; Podaný, Kamil (advisor)
This bachelor thesis is a literary study dealing with extrusion technology and is aimed to be used as a study material. There are described basic principles of technology, the division of methods, used materials, machines, tools and the area of usage. The main focus of this work is to depict advantages and disadvantages of extrusion technology and its application in practice, which is supported by the example of usage in one of the Czech companies called Vítkovice Cylinders.
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Využití 3D tisku při výrobě výukových modelů
ZAJÍC, Zdeněk
The first part of this work presents the history of 3D printing, 3D printing processes andmodel formats for 3D printing. The following chapter presents the most widely used 3D printer technologies, advantagesand disadvantages of 3D printing and spheres where 3D printing can be used. In practical part is described the printer and the software, which were used for printing of educational models. There are also links, where can be found plenty of quality educational models. In conclusion are presented the most frequent problems of 3D printing and a description of educational models.
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3D bioprinting of stem cells and analysis of microscopic images
Kandra, Mário ; Svoboda, Ondřej (referee) ; Kolářová, Jana (advisor)
In this diploma thesis we are discussing about using 3D bioprinting in tissue engineering. We are discribing using biomaterials for construction scaffolder and aplication stem cells in 3D bioprinting. Last section of theoretical part deals with very often used techniques of 3D bioprinting and we are focused on extrusion technique. In the practical part we propose a method for print vasculars structures. We realized prototype of print head, her design and 3D printing of individual parts. To mechanical part we create a control system for printing control. At the end we visualize the organization of the cells using program modules.
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Design and Implementation of Small-lot Production Line
Šíl, Petr ; Vdoleček, František (referee) ; Zuth, Daniel (advisor)
This Master's Thesis is focused on the design and control of a small-series production line, for the production of segmetal arches and plastic reductions. It is about the conversion from a semi-automatic line to a fully automatic line. The production line consists of an extruder, a cutting unit, a exhaust unit, three pressing machines and a manipulator. Every single machine has a custom control for which was selected a baseplate with microcontroler ATmega 128 and designed powerful part of inputs and outputs. There is a simple communication between the machines. Appropriate elements were used for conversion of every individual part of the production line. The whole system is programmed with software called AVR Studio4.
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Modification of 3D milling machine to 3D printer
Halamíček, Lukáš ; Vetiška, Jan (referee) ; Bradáč, František (advisor)
This thesis deals with rebuilding of engraving machine to 3D printer. In the first part it describes possible 3D printing technologies and its utilizations in rebuilding. In the next section suitable parts for reconstruction are chosen and described. Then the controlling of heating bed, hot end and filament feed is realized by using software TwinCAT by company Beckhoff. Functional 3D printer should be result of this thesis.
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Technical aspects of the use of 3D printing in the education at elementary school
CVRČEK, Tomáš
This thesis in the beginning deals with the history of 3D printing and its development. For better understanding the nature of 3D printing are the significant technologies that includes. Professional part includes work with the printer MakerBot Replicator 2X. Mechanical parts of the device are analyzed together with the operating software MakerBot DesktopThe following chapter is dealing with the limits and restrictions when it is printed on said 3D printer, except that describes important aspects when working on the printer. For the creation of electronic models are suggested appropriate programs for use in elementary school. A significant milestone is forming the problems of 3D printing, which can serve as a guide for the elimination of print quality problems, malfunctioning of 3D printers and others. Interesting models are designed for teaching physics and working activities that the students facilitate understanding of the substance of the response and act as activating element within lesson. It was created a list of important sites where you can find models suitable not only for teaching in elementary schools, but also for other purposes. The last chapter deals with the economic aspect of 3D printing.
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