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Evaluation of washing effect on material properties after 3D DLP printing
Uvíra, Dominik ; Jaroš, Aleš (referee) ; Zemčík, Oskar (advisor)
This thesis focuses on the influence of washing on the mechanical properties of 3D DLP printed parts. The aim of the thesis was to experimentally determine the impact of washing agents with different wash durations on the mechanical properties of 3D printed parts using DLP technology. The research describes the devices and materials used. Furthermore, an analysis of washing 3D DLP printed parts is conducted, including a description of polymer dissolution, types of washing agents, and washing methods. Based on the research, materials were selected, including Standard resin, ABS-like resin, and Tough resin. The used washing agents are IPA, Simple Green industrial degreaser, DPM, and a special uncured resin remover called EasyClean. Samples were produced on the DLP 3D printer Anycubic Photon D2, and printing profiles were established based on the research part and own calibration. In the first experiment, the effectiveness of the agents in removing uncured resin was monitored. This was followed by an experimental evaluation of the tensile properties of the prepared samples. Furthermore, the notch toughness of each material was evaluated. In both cases, an analysis of fracture surfaces was conducted. Based on the achieved results, optimal washing durations were determined for all material and rinsing agent combinations, and areas of application were recommended. Subsequently, a custom rinsing agent combining low cost and good mechanical properties was proposed. The final part of the work consists of an economic evaluation of the various rinsing agents, resulting in specific recommendations for purchasing rinsing agents and rinsing duration.
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Design of a group milling fixture for clamping components
Kalous, Jan ; Dvořák, Jaromír (referee) ; Zemčík, Oskar (advisor)
The thesis deals with the design of a group milling jig for four different shaped components. These parts are components of a baking line and are designed to clamp baking matrices for wafer production. The semi-product for all the parts is a casting made of EN-GJS-400-15, cast iron with spheroidal graphite. Machining on a horizontal milling centre MS NH5000 DCG from DMG Mori Czech s.r.o. was chosen to produce all four parts. A list of tools and gauges was made. Subsequently, a technological process was created for the selected part with the designation HAAC-62836-001. Then the cutting forces from the individual cutter inserts, clamping, and friction forces were calculated to verify that the machined piece could move in the jigs. This thesis includes calculations of both jigs and evaluation according to the technical aspect.
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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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A proposal of production technology of a hinge part
Urbánek, Vojtěch ; Zemčík, Oskar (referee) ; Sliwková, Petra (advisor)
This thesis is aimed on proposal of production technology, NC codes and production of selected hinge part. The theoretical part describes the technologies of milling, surface grinding and hole grinding as technologies used during production and as non-production technologies of CAD/CAM software. Selected production machines and cutting tools are also specified and a technological process is proposed including all the steps and operations for the production of the hinge part. According to the proposed production plan, the work in two different CAM systems for the NC code of the machining center is described. The practical part describes the production on a CNC machining center and grinders. The economic evaluation summarizes material costs, setting production costs and the production and cooperation costs.
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Design and production of experimental axle part
Volfík, Jiří ; Slaný, Martin (referee) ; Zemčík, Oskar (advisor)
The content of this diploma thesis is a design of construction and selection of suitable material for upper-carrier part used for racing vehicle, produced by FDM 3D printing with the alternative option to replace an existing part, which was produced by conventional technique of CNC machining. Various versions of the experimental part are analyzed by FEM and compared in terms of safety coefficient with target to select the most appropriate construction design. The chosen version of the model is at the end compared with already existing part, which was also analyzed by FEM.
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Analysis of electro-spark cutting and digging machines from firm name Emotek s.r.o. and their enforcement on EU market
Svoboda, Jiří ; Zemčík, Oskar (referee) ; Zemčík, Oskar (advisor)
The aim of this work is to make the reader closer to the principle and usage of an uconventional technology of shaping metal materials - electro discharge machining. The first part of the work contents historical dates, an explanation of the principle and the technological insertion. In the second part I concentrate on the range of products of the Slovakian company Emotek, to be specific, on their spark cutting machine EIR 005. I sample the description of the machine and its technical - economic comparison with the competitive electro - spark machines. The whole work is primarily concentrated on the electro - spark cutting machines. The digging machines are mentioned only marginally. Lastly, the work should persuade the readers of indisputable advantages of this technology and its utilization. Furthemore to introduce Emotek as a company competing with other external producers as well as with merchants and to point out the further possible progress of the company and its activity in the electro - discharge machining branch.
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Production of GPS holder on FDM 3D printer
Šebesta, Vít ; Šeniglová, Hana (referee) ; Zemčík, Oskar (advisor)
This bachelor thesis is dealing with design and production of a model holder for GPS using 3D FDM printer. Three models were created by the Autodesk Inventor Professional 2015 and they were economically and technically assessed. Then model No.3 was chosen for detailed analysis. The important methods of 3D printing and appropriateness of using different materials such as ABS and PLA are also discussed in this thesis.
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Automation of layoutplanning
Pavlíček, Michal ; Zemčík, Oskar (referee) ; Hlavenka, Bohumil (advisor)
This thesis deal with suggestion of program, which channelize technologist-planner whole tasks which are unit with projection. Deal with capacitive calculation methods and technology projection methods. This methods were implementing in program Excel and AutoCAD. It was reaching configurational guide in html format, which unit whole section of program.
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