National Repository of Grey Literature 24 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Comparison of tensile properties of polymeric samples produced by extrusion based 3D printing
Krajcar, Ivo ; Vespalec, Arnošt (referee) ; Škaroupka, David (advisor)
The subject of this work is a summary of the contemporary knowledge about 3D printing and mechanical properties of a prototype manufactured this way. Main goal is to compare the frequently used FDM method with the innovative APF method of 3D printing from the Arburg company. ASA and CPE materials were chosen for researching this method. On these materials, tensile strength was measured. Aditionally, for comparison between the two methods, referential samples manufactured by injection moulding were made. A percentual difference in strength of each sample was compared against these. 60 samples in total were made for this comparison. After evaluation of the results, it was found that in the tensile strength the samples made by the APF method are approximately 30 % less strong than the referential sample. The samples made by the FDM method are approximately of the same strength as the referential sample.
Construction of the stand for the filaments on spools
Bezděk, Petr ; Dočkal, Kryštof (referee) ; Škaroupka, David (advisor)
The aim of this bachelor thesis is to develop a stand for filament spools with minimal unwinding resistance, which eliminates stitching of filament and calculates the amount of unwound material. The stand is designed for a spool filament in the weight range of 250 g to 2.5 kg. Furthermore, the goal is to make the stand universal and usable for various 3D printers. The problem is solved by selecting the most appropriate concept for the problem based on the applicable concept analysis. The work contains an overview of the essential facts concerning stands, unwinding and 3D printing. Subsequently, the key issues are analysed on the basis of balancing the benefits of the possible variants of the concept. The chosen concept is solved in structural parts, which ultimately form a functional unit and a completed product. The result is a complete stand design in the form of written work, production documentation and manufactured product. The stand function has been verified by testing. The work is beneficial in terms of expanding awareness of rack issues, identifying 3D printing problems associated with the spool stand, designing and finished products for use in printing. The design is entirely designed to produce only one piece.
Pneumobile car-body design for robotic fabrication
Vevera, Tomáš ; Nevřela, Petr (referee) ; Škaroupka, David (advisor)
This thesis solves design of the pneumobile bodywork designated for robotic manufacturing using curved folding method. The thesis evaluates possibilities of this technology and issue of specific behaviour of CCF geometries. With intention to simplify and speedup the proces of designing, the suggestion of software tool for CCF geometry simulation is proposed. Obtained pieces of knowledge are being used in creating the prototype of designed solution using curved folding.
Design of the 3D printer for technology Contour Crafting
Anderle, Peter ; Chorý, Tomáš (referee) ; Škaroupka, David (advisor)
The subject of this bachelor thesis is the design of the spatially adaptable 3D printer for Contour Crafting. Aiming to apply megascale aditive technology in a field of construction industry.
Styling of the passenger car Proton Prevé
Burjeta, Josef ; Karásek, David (referee) ; Škaroupka, David (advisor)
The thesis is focused on styling a real passenger car Proton Prevé with regard to the quality of surface modelling using computer software Autodesk Alias. The stylistic adjustments were made on basis of the background research and poll focused on the target group. Selected body parts have been modified according to the desired sport character of the car and the current vehicle’s appearance. The result of the work is a surface model, which was created using A-Class modelling methods under the direction of Evektor company. The benefit of the thesis is facelift of an existing car with consideration of the current market situation and customer requirements.
Supportless 3D print by 6-axis robotic arm
Krejčiřík, Petr ; Horák, Zdeněk (referee) ; Škaroupka, David (advisor)
This diploma thesis deals with the solution 3D printing by KUKA robotic arm without realization of supporting structures. The 6-axis KUKA KR 60HA robotic arm allows adjusting 3D printing strategies compared to classical 3D printing concept. The first part of the diploma thesis is about the identification of the current state of knowledge, especially the state of the experimental device for the robotic 3D print. To improve quality of the printed is necessary to modify the printing head and develop the suitable calibration principle. Special printing strategies were designed to rearch the 3D printing overhead volumes without creating support structure. A special alghoritm in the Grasshopper evnironment was developed for generating 3D print trajectory on the body surface. For the quality improvement it is necessary to optimize the process parameters. The final step is experimental 3D printing with the evaluation of surface dimensions, geometric precision and layer coherence in various printing strategies.
Design of the shin protector for direct digital manufacturing
Dlabaja, Štěpán ; Haltof, Vladimír (referee) ; Škaroupka, David (advisor)
The goal of this thesis is to design parametric shin pad for skiers, directly manufacturable the method of FFF from ABS plastic. Selected shin was scanned using 3D scanner and the shin pad with damping elements and parametrically customizable ribs. The final solution is experimental with potential for future adjustments.
Design of the hammer set
Král, Ondřej ; Haltof, Vladimír (referee) ; Škaroupka, David (advisor)
This bachelor’s thesis is focused on the design of a product family of hammers by the means of generative design. The core of this thesis is the creation of an algorithm which will generate hammers of unified visual style, but varying properties based on input parameters. It is necessary that these hammers are in shape, ergonomics and dimensions adequate to preferences of the target group of professional workers and that they are producible in series and from commonly used materials. The output is a set of three hammers with different mass and dimensional properties.
Design of the parametric orthosis for upper limb
Kosová, Barbora ; Jelenčík, Branislav (referee) ; Škaroupka, David (advisor)
This thesis deals with the design and manufacturing of custom-made immobilization orthosis for the upper limb. Emphasis is put on the digitization of the approach and integration of additive manufacturing in the workflow of splint production. The solution proposes automatic model construction based on a 3D scan. Such a model is further parametrized in order to provide splinting practitioners with customization abilities. Particular attention is paid to the changes of limb volume due to swell, where the use of auxetic structures is suggested.
Design of the electron microscope
Švajdová, Anna ; Surman, Martin (referee) ; Škaroupka, David (advisor)
The theme of this diploma thesis is the design of a scanning electron microscope with a focused ion beam. Specifically, the thesis is focused on the design of the microscope covers and the adjacent workplace of the operator for Tescan Orsay Holding a.s.. Design is solved as the first proposal aimed at future innovation of the design of the entire product line.

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