scholarly journals Technological Peculiarities of Manufacturing Two-Media UAV Using Fused Deposition Modeling

2021 ◽  
pp. 34-41
Author(s):  
В.В. Куриный ◽  
В.В. Солецкий ◽  
Б. Лю
Keyword(s):  
Fused Deposition Modeling ◽  
Educational Institution ◽  
Federal State ◽  
Chemical Characteristics ◽  
3D Printer ◽  
State University ◽  
Fused Deposition ◽  
Test Operation ◽  
Deposition Modeling ◽  
Physical And Chemical

В статье представлены двухсредные дроны разработанные в различных странах мира. Приведены ссылки на источники. Представлена конструкция разработанного в ФГБОУ ВО «КнАГТУ» двухсредного дрона. Разработанный аппарат является конвертопланом. Описана примененная для изготовления двухсредного дрона технология с применением метода послойного наплавления филамента. Описаны выявленные в процессе изготовления и пробной эксплуатации недостатки использованной технологии изготовления дрона и выбранного филамента PLA. Проведен анализ филаментов с целью подбора вида пригодного для изготовления объектов контактирующих с водой по физико-механическим и химическим характеристикам. Подобраны тесты для определения физико-химических характеристик филамента. Рекомендован для изготовления двухсредных дронов пластики PETG и HIPS. Приведен разработанный тест для оценки герметичности напечатанных на 3d принтере деталей. Приведен разработанный тест для отработки параметров печати на 3d принтере. Приведены рекомендованные для печати параметры слайсера. Описана разработанная технология изготовления на 3d принтере компонентов беспилотных дронов. The paper describes two-media UAV developed in various countries. Source references are given. The paper presents a design of a two-media UAV developed in Federal State Budgetary Educational Institution of Higher Education Komsomolsk-na-Amure State University. The developed device is a convertiplane. Fused deposition modeling technology used for manufacturing a two-media UAV is described. The paper shows the downsides of UAV manufacturing technology and selected PLA filament identified during manufacture and test operation. Filaments have been analysed to identify a type suitable in its physical, mechanical and chemical characteristics for manufacturing objects in contact with water. Tests to determine physical and chemical characteristics of the filament have been selected. PETG and HIPS plastics are recommended for manufacturing two-media UAV. The paper describes a test developed to evaluate hermetic sealing of parts manufactured with 3D printer. A test developed to refine 3D printer parameters is given. Slicer parameters recommended for printing are given. A technology developed for manufacturing UAV components with 3D printer is described.

scholarly journals Dual Sacrificial Molding: Fabricating 3D Microchannels with Overhang and Helical Features

Micromachines ◽  
2018 ◽  
Vol 9 (10) ◽  
pp. 523 ◽  
Author(s):  
Wei Goh ◽  
Michinao Hashimoto
Keyword(s):  
3D Printing ◽  
Fused Deposition Modeling ◽  
Microfluidic Devices ◽  
High Impact ◽  
3D Printer ◽  
Original Design ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Indispensable Tool ◽  
Single Material

Fused deposition modeling (FDM) has become an indispensable tool for 3D printing of molds used for sacrificial molding to fabricate microfluidic devices. The freedom of design of a mold is, however, restricted to the capabilities of the 3D printer and associated materials. Although FDM has been used to create a sacrificial mold made with polyvinyl alcohol (PVA) to produce 3D microchannels, microchannels with free-hanging geometries are still difficult to achieve. Herein, dual sacrificial molding was devised to fabricate microchannels with overhang or helical features in PDMS using two complementary materials. The method uses an FDM 3D printer equipped with two extruders and filaments made of high- impact polystyrene (HIPS) and PVA. HIPS was initially removed in limonene to reveal the PVA mold harboring the design of microchannels. The PVA mold was embedded in PDMS and subsequently removed in water to create microchannels with 3D geometries such as dual helices and multilayer pyramidal networks. The complementary pairing of the HIPS and PVA filaments during printing facilitated the support of suspended features of the PVA mold. The PVA mold was robust and retained the original design after the exposure to limonene. The resilience of the technique demonstrated here allows us to create microchannels with geometries not attainable with sacrificial molding with a mold printed with a single material.

Improved accuracy of an FDM 3D printer using a face-diagonal length test using an artifact and a Vernier caliper

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Seung-Han Yang ◽  
Kwang-Il Lee
Keyword(s):  
Fused Deposition Modeling ◽  
3D Printer ◽  
Geometric Errors ◽  
Content Type ◽  
Fused Deposition ◽  
Model Based ◽  
The Face ◽  
Deposition Modeling ◽  
Measuring Machine ◽  
Diagonal Length

Purpose The purpose of this study is to improve the accuracy of a fused deposition modeling three-dimensional (3D) printer by identifying and compensating for position-independent geometric errors using a face-diagonal length test featuring a designed artifact and a Vernier caliper. Design/methodology/approach An artifact that does not require support when printing was designed and printed to allow performance of the face-diagonal length test. A Vernier caliper was used to measure the lengths of diagonals in the XY, YZ and ZX planes of the printed artifact specimen; this completed the face-diagonal length test. The relationships between position-independent geometric errors of the linear axes X, Y and Z and the measured diagonal lengths of the three planes were determined to identify geometric errors. Findings The approach was applied to a commercial fused deposition modeling 3D printer, and three position-independent geometric errors were rapidly identified. The artifact was re-printed after model-based compensation for these errors and the diagonal lengths were re-measured. The results were verified via coordinate measuring machine measurement of a simple test piece without and with model-based compensation for identified geometric errors. Furthermore, the proposed approach was applied to a commercial 3D printer. Research limitations/implications The measured diagonal lengths of the printed artifacts varied greatly. Thus, further studies should investigate the effects of printing materials and parameters on the length discrepancies of 3D printed artifacts. Practical implications A software-based compensation of identified position-independent geometric errors has to be used at commercial 3D printers for accuracy improvements of printed parts. Originality/value Thus, the approach is of practical utility; it can be periodically used to identify position-independent geometric errors and ensure that the 3D printer is consistently accurate.

scholarly journals Typography-Like 3D-Printed Templates for the Lithography-Free Fabrication of Microfluidic Chips

2019 ◽  
Vol 25 (1) ◽  
pp. 82-87
Author(s):  
Wenqiong Su ◽  
Yulong Li ◽  
Lulu Zhang ◽  
Jiahui Sun ◽  
Shuopeng Liu ◽  
...  
Keyword(s):  
Processing Time ◽  
Fused Deposition Modeling ◽  
Three Dimensional ◽  
Cost Effective ◽  
Microfluidic Channels ◽  
3D Printer ◽  
Microfluidic Chips ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
3D Printed

Typography-like templates for polydimethylsiloxane (PDMS) microfluidic chips using a fused deposition modeling (FDM) three-dimensional (3D) printer are presented. This rapid and fast proposed scheme did not require complicated photolithographic fabrication facilities and could deliver resolutions of ~100 μm. Polylactic acid (PLA) was adopted as the material to generate the 3D-printed units, which were then carefully assembled on a glass substrate using a heat-melt-curd strategy. This craft of bonding offers a cost-effective way to design and modify the templates of microfluidic channels, thus reducing the processing time of microfluidic chips. Finally, a flexible microfluidic chip to be employed for cell-based drug screening was developed based on the modularized 3D-printed templates. The lithography-free, typography-like, 3D-printed templates create a modularized fabrication process and promote the prevalence of integrated microfluidic systems with minimal requirements and improved efficiency.

scholarly journals PENENTUAN SETTING OPTIMAL MESIN 3D PRINTER BERBASIS FUSED DEPOSITION MODELING MENGGUNAKAN METODE TAGUCHI

2018 ◽  
Vol 4 (2) ◽  
Author(s):  
Anggit Prakasa ◽  
Setya Permana Sutisna ◽  
Anton Royanto Ahmad
Keyword(s):  
Experimental Design ◽  
Taguchi Method ◽  
Fused Deposition Modeling ◽  
Dimensional Accuracy ◽  
High Accuracy ◽  
3D Printer ◽  
Fused Deposition ◽  
3D Printers ◽  
Optimal Setting ◽  
Deposition Modeling

<p>The 3D printers process is applied to create prototype components, but at the last 3D Printers are often applied as last products. So, high accuracy is required in this case. In this research will find the optimal<br />setting of the dimensional accuracy 3D printers based fused deposition modeling. The method used is<br />the Taguchi method, the reason for using this method its efficiency, this is because the Orthogonal<br />Array matrix requires less number of experiments than the classical experimental design. Analysis of<br />Variance is also needed in this method to see the factors that significantly influence the response<br />variable. The results of this study indicate that the factors that significantly influence is printspeed by<br />contributing 53.08%, flowrate contributes 16.4%, and temperature heater block contributes 3.85% and<br />optimal setting is temperature heater block 190º, print speed 60mm/s and flowrate 6.28 mm3/s. (A1,<br />C3 dan D2).</p>

scholarly journals Development and Accuracy Test of a Fused Deposition Modeling (FDM) 3D Printing using H-Bot Mechanism

2021 ◽  
Vol 3 (1) ◽  
pp. 46-53
Author(s):  
Budi Hadisujoto ◽  
Robby Wijaya
Keyword(s):  
3D Printing ◽  
Manufacturing Process ◽  
Fused Deposition Modeling ◽  
Industrial Revolution ◽  
3D Printer ◽  
Initial Development ◽  
Fused Deposition ◽  
Accuracy Test ◽  
Custom Made ◽  
Deposition Modeling

Additive manufacturing process known as the 3D printing process is an advanced manufacturing process including one of the components to support industrial revolution 4.0. The initial development of a 3D printing machine at Sampoerna University is the background of this research. The 3D printing setup of Fused Deposition Modeling (FDM) was built using H-bot moving mechanism by considering the rigidity aspect. The FDM printing method is selected due to its cost and reliability. In this early development, the brackets were custom made using a 3D printer with Polylactic Acid (PLA) material. The result showed that the software worked properly in accordance with the assembled mechanical and electrical parts. The 3D printer could print simple objects such as planes and cubes with small dimensions. However, the printing specimen still lacked accuracy caused by the less rigidity of linear rail brackets, less coplanar belt arrangement, and error in some electronic components.

scholarly journals Z-axis limit switch 3D printer

2020 ◽  
pp. 22-27
Author(s):  
Vadym Shalenko ◽  
Boris Korniychuk ◽  
Andriі Masluyk
Keyword(s):  
3D Printing ◽  
Large Scale ◽  
Fused Deposition Modeling ◽  
Selective Laser Sintering ◽  
3D Printer ◽  
Fused Deposition ◽  
Laminated Object Manufacturing ◽  
The Future ◽  
Deposition Modeling ◽  
Additive Methods

Not much time has passed since the appearance of the first 3D printer. Today there are many different printers. They differ in various 3D printing technologies, namely: Stereolithography – SL, Selective Laser Sintering, Fused Deposition Modeling – FDM, Laminated Object Manufacturing – LOM, Polyjet and Ployjet Matrix. In recent years, the spread of 3D printing technology has become and continues to be used more and more today. Of course, in the future we will see a large-scale spread of additive methods, but the practical application of 3D printing today is available to everyone. Melting deposition modeling technologies have become widespread and available. The authors in this article consider possible options for upgrading the mounting of the end sensor of the Z Axis and automating the process of calibration of the zero gap of the extruder nozzle relative to the working surface of the printer. This calibration is important. This affects the accuracy and printing process of the future plastic model. During the operation of the 3D printer, it is often necessary to service the extruder, which forces the process of calibrating the zero gap of the printer nozzle. Optimally correct selected nozzle clearance affects the accuracy, geometry of the model and printing as a whole. It also allows you to get rid of peeling off the model from the desktop surface and the destruction of the model during printing.

scholarly journals Determination of Material Requirements for 3D Gel Food Printing Using a Fused Deposition Modeling 3D Printer

Foods ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2272
Author(s):  
Jiwon In ◽  
Haeun Jeong ◽  
Sanghoon Song ◽  
Sea C. Min
Keyword(s):  
Fused Deposition Modeling ◽  
Rheological Parameters ◽  
3D Printer ◽  
Gelling Agents ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Shape Retention ◽  
Food Printing ◽  
Material Requirements

The material requirements for printing gel food with a fused deposition modeling 3D printer were determined based on fidelity, shape retention, and extrudability, as described by the rheological parameters of storage modulus (G’), yield stress (τ0), and phase angle (δ). The material requirements were determined for printing gel food using three formulations containing gelatin, gelatin and pectin, and gum mixture as the gelling agents. As compared with formulations based on gelatin alone, pectin-containing gelatin-based formulations yielded higher δ and lower G’ and τ0 values, while gum mixture-based formulations formed a gel with higher G’ and δ values and a wider range of τ0. Overall, this study presents quantitative material requirements for printing gel products containing gelatin, gelatin–pectin, and gum mixtures.

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