scholarly journals Multi-Nozzle Pneumatic Extrusion-Based Additive Manufacturing System for Printing Sensing Pads

Inventions ◽  
2020 ◽  
Vol 5 (3) ◽  
pp. 29
Author(s):  
Kai-Wei Chen ◽  
Ming-Jong Tsai ◽  
Heng-Sheng Lee
Keyword(s):  
Additive Manufacturing ◽  
Light Source ◽  
Manufacturing System ◽  
Uv Light ◽  
Numerical Control ◽  
Double Layers ◽  
Python Language ◽  
G Code ◽  
Curing Light ◽  
Cnc Controller

This paper developed a multi-nozzle pneumatic extrusion-based additive manufacturing (AM) system and applied it to print multi-material polymers and conductive sensing pads. We used pneumatic extrusion nozzles to extrude the liquid material and then cured it by an ultraviolet (UV) light source. The multi-nozzle pneumatic extrusion-based additive manufacturing system mainly integrates both PC-based HMI and CNC controller to operate the three-axis motion and the extrusion flow control. Moreover, the peripheral I/Os include both positive and negative pressure and also the curing light source. A D/A controller is also applied to control the value of the pneumatic pressure. The coding part utilizes the numerical control software along with the PLC planning to operate the AM machine automatically. Our experiment is conducted by using Simplify3D, a commercial 3D printing slicing software. Different requirements were set for extrusion nozzles with different materials, and then we executed the path controlling G-code data by Python Language. Our system successfully prints multi-material polymer structure pads which include the hard and soft material pad fabricated in double-layers, triple-layers and also the grid structure. Finally, we find that the printed pad has conductivity.

Research on the Automatic Programming System of the Bone Scaffold 3D Printer Manufacturing

2013 ◽  
Vol 579-580 ◽  
pp. 609-613
Author(s):  
Yuan Yuan Liu ◽  
Fu Hua Zhang ◽  
Wei Hua Chen ◽  
Fei Fei Yan ◽  
Lu Lu Zheng ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing System ◽  
Programming System ◽  
3D Printer ◽  
Automatic Programming ◽  
Bone Scaffold ◽  
Motion Controller ◽  
Stl File ◽  
G Code ◽  
Data Source

STL file is the data source of the technology. As the basis of the technology, the information of the STL file must be picked up, post-processed, and then the G code file which is tallied the PMAC rule generates as a .CFG file form in the environment of VC++. Finally, the goal of programming automation achieves after the pre-processed and post-processed of STL file. The G code downloads in the PMAC Motion Controller to control the additive manufacturing system to manufacture the bone scaffold. It realizes the automation process from the STL file of the bone to the bone scaffold in tissue engineer.

PROBLEM OF ADDITIVE MANUFACTURING MANAGEMENT BASED ON THE TECHNOLOGIES OF THE INDUSTRIAL INTERNET OF THINGS

2021 ◽  
pp. 7-13
Author(s):  
С.Л. Добрынин ◽  
В.Л. Бурковский
Keyword(s):  
Additive Manufacturing ◽  
Internet Of Things ◽  
3D Model ◽  
Numerical Control ◽  
Raspberry Pi ◽  
Industrial Internet Of Things ◽  
Technological Processes ◽  
Industrial Internet ◽  
Resource Virtualization ◽  
G Code

Произведена классификация технологий аддитивного производства по базовому состоянию материала: жидкая основа, твердая основа, порошковая основа. Даны определения распространенных технологий в зависимости от базового состояния материала. Описаны технологические процессы изготовления прототипов и конечных изделий методами аддитивного производства, включающие в себя проектирование 3D-модели, преобразование форматов, нарезку 3D-модели на слои, формирование G-code и непосредственно печать. Рассмотрены технологии четвертой промышленной революции как инструмент повышения эффективности управления технологическими процессами аддитивного производства. Представлена модель модернизации технологического процесса аддитивного производства на основе технологий промышленного интернета вещей, аппаратной реализацией которого является одноплатный компьютер Raspberry Pi, программной реализацией является MTConnect - промышленный стандарт обмена данными станков с числовым программным управлением. Использование Raspberry Pi, подключенных к нему датчиков и программного обеспечения OctoPrint реализует контроль и удаленное управлениe технологическим оборудованием аддитивного производства (3D-принтером) в режиме реального времени. Представлено техническое устройство основных подсистем облачной платформы аддитивного производства. Архитектура предлагаемой системы состоит из четырех уровней: уровень адаптера доступа, уровень виртуализации ресурсов, уровень управления службами, уровень пользовательского инструментария We classified additive manufacturing technologies according to the basic state of the material: liquid base, solid base, powder base. We give definitions of common technologies depending on the basic state of the material. We describe the technological processes of manufacturing prototypes and final products by methods of additive manufacturing, including designing a 3D model, converting formats, slicing a 3D model into layers, forming a G-code and directly printing. We considered the technologies of the fourth industrial revolution as a tool for increasing the efficiency of control of technological processes of additive manufacturing. We present a model of modernization of the technological process of additive manufacturing based on technologies of the industrial internet of things, the hardware implementation of which is a single-board computer Raspberry Pi, the software implementation is MTConnect - an industrial standart for the exchange of data of machine tools with numerical control. Using Raspberry Pi, sensors connected to it and software OctoPrint implements control and remote management of additive manufacturing equipment (3D printer) in real time. We present the technical structure of the main subsystems of the cloud platform for additive manufacturing. The architecture of the proposed system consists of four levels: the access adapter level, the resource virtualization level, the service control level, and the user instrumentation level

scholarly journals AVANCES EN EL DESARROLLO DE UN SISTEMA DE MANUFACTURA ADITIVA BASADO EN STEP-NC

2018 ◽  
Vol 4 (1) ◽  
pp. 39-53 ◽  
Author(s):  
Efrain Rodriguez ◽  
Renan Bonnard ◽  
Alberto José Alvares
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Systems ◽  
Manufacturing System ◽  
Reference Model ◽  
Object Oriented Programming ◽  
Numerical Control ◽  
Layer By Layer ◽  
Machining Processes ◽  
Material Deposition ◽  
Nc Program

The new standard of numerical control, known as STEP-NC, is categorized as the future of the advanced manufacturing systems. Greater flexibility and interoperability are some potential benefits offered by STEP-NC to meet the challenges of the new industrial landscape that is envisaged with the advent of Industry 4.0. Meanwhile, STEP-NC object-oriented programming has been partially applied and developed for machining processes (milling, turning...). But with the processes of additive manufacturing has not happened the same and the development is still incipient. This work presents the advances in the development of a new STEP-NC compliant additive manufacturing system, focusing particularly on the development of the information model. The application model activities in the IDEF0 nomenclature and application reference model in EXPRESS are presented. The AM-layer-feature concept has been introduced to define the manufacturing feature of additive processes based on material deposition layer-by-layer. Finally, a STEP-NC program generated from the EXPRESS model is presented, which can be implemented on an additive manufacturing system to validate the proposed model.                                                                                           

scholarly journals Study of CNC System for PCB Design using Proteus

2021 ◽  
Vol 10 (1) ◽  
pp. 101-105
Keyword(s):  
Human Error ◽  
Printed Circuit Board ◽  
Numerical Control ◽  
Circuit Board ◽  
Cnc Machine ◽  
Cnc System ◽  
Pcb Design ◽  
G Code ◽  
Pcb Layout ◽  
Cnc Controller

A Computer Numerical Control (CNC) system for Printed Circuit Board (PCB) design using Proteus Design Suite has been presented. A schematic diagram and single-sided PCB layout of a high voltage circuit for Geiger– Muller (GM) tube is designed using Proteus software. Subsequently, the PCB layout of the circuit is converted into Gerber files that are decoded into G-code through Flat CAM software. The G-code is introduced to the CNC system consisting of a computer, a CNC controller and a CNC machine. The code is stored in the memory of the computer and is uploaded to the CNC controller byMach3 software. The controller operates the CNC machine to perform isolation routing, drilling and milling for PCB as per the instructed design. It is noticed that the CNC system associated with Proteus makes the PCB designing process automated and easier by reducing the process of printing as well as etching. This study reveals that the proposed system can eliminate human error to achieve better accuracy and higher productivity as compared to the conventional methods of PCB design.

Development of a UV Light Source using Pr:LuAG Thin Film Target Pumped by Electron Beam

2015 ◽  
Vol 135 (9) ◽  
pp. 1049-1054
Author(s):  
Norio Ichikawa ◽  
Kohei Ikeda ◽  
Yoshinori Honda ◽  
Hiroyuki Taketomi ◽  
Koji Kawai ◽  
...  
Keyword(s):  
Thin Film ◽  
Electron Beam ◽  
Light Source ◽  
Uv Light

scholarly journals Interpreting the G-code of drilling machining to use in open CNC controller machine

2021 ◽  
Vol 1892 (1) ◽  
pp. 012014
Author(s):  
Noor Hatem ◽  
Yusri Yusof ◽  
Aini Zuhra A Kadir ◽  
Kamran Latif ◽  
M A Mohammed
Keyword(s):  
Open Cnc ◽  
G Code ◽  
Cnc Controller

A Large Emitting Area UV Light Source With Semiconductor Cathode

2004 ◽  
Vol 32 (5) ◽  
pp. 2093-2098 ◽  
Author(s):  
B.G. Salamov ◽  
Y. OztekinCiftci ◽  
K. Colakoglu
Keyword(s):  
Light Source ◽  
Uv Light

Optimal space filling for additive manufacturing

2016 ◽  
Vol 22 (4) ◽  
pp. 660-675 ◽  
Author(s):  
Sajan Kapil ◽  
Prathamesh Joshi ◽  
Hari Vithasth Yagani ◽  
Dhirendra Rana ◽  
Pravin Milind Kulkarni ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Process ◽  
Layered Manufacturing ◽  
Closed Curve ◽  
Numerical Control ◽  
Surface Finishing ◽  
Content Type ◽  
Single Pass ◽  
Connected Area ◽  
Area Filling

Purpose In additive manufacturing (AM) process, the physical properties of the products made by fractal toolpaths are better as compared to those made by conventional toolpaths. Also, it is desirable to minimize the number of tool retractions. The purpose of this study is to describe three different methods to generate fractal-based computer numerical control (CNC) toolpath for area filling of a closed curve with minimum or zero tool retractions. Design/methodology/approach This work describes three different methods to generate fractal-based CNC toolpath for area filling of a closed curve with minimum or zero tool retractions. In the first method, a large fractal square is placed over the outer boundary and then rest of the unwanted curve is trimmed out. To reduce the number of retractions, ends of the trimmed toolpath are connected in such a way that overlapping within the existing toolpath is avoided. In the second method, the trimming of the fractal is similar to the first method but the ends of trimmed toolpath are connected such that the overlapping is found at the boundaries only. The toolpath in the third method is a combination of fractal and zigzag curves. This toolpath is capable of filling a given connected area in a single pass without any tool retraction and toolpath overlap within a tolerance value equal to stepover of the toolpath. Findings The generated toolpath has several applications in AM and constant Z-height surface finishing. Experiments have been performed to verify the toolpath by depositing material by hybrid layered manufacturing process. Research limitations/implications Third toolpath method is suitable for the hybrid layered manufacturing process only because the toolpath overlapping tolerance may not be enough for other AM processes. Originality/value Development of a CNC toolpath for AM specifically hybrid layered manufacturing which can completely fill any arbitrary connected area in single pass while maintaining a constant stepover.

Mechanical Characterization of UV Photopolymerized PMMA with Different Photo-Initiator Concentration

2021 ◽  
Vol 903 ◽  
pp. 11-16
Author(s):  
M.A. Manjunath ◽  
K. Naveen ◽  
Prakash Vinod ◽  
N. Balashanmugam ◽  
M.R. Shankar
Keyword(s):  
Mechanical Properties ◽  
Light Source ◽  
Polymethyl Methacrylate ◽  
Biomedical Applications ◽  
Mechanical Characterization ◽  
Uv Light ◽  
Curing Time ◽  
Uv Led ◽  
Pmma Resin

Polymethyl methacrylate (PMMA) is one among few known photo-polymeric resin useful in lithography for fabricating structures having better mechanical properties to meet the requirement in electronics and biomedical applications. This study explores the effect of Photo Initiator (PI) concentration and also curing time on strength and hardness of Polymethyl methacrylate (PMMA) obtained by UV photopolymerization of Methyl methacrylate (MMA) monomer. The UV LED light source operating at the wavelength of 364 nm is used with Benzoin Ethyl Ether (BEE) as photo initiator. The curing of PMMA resin is supported with peltier cooling device placed at the bottom of the UV light source. The characterisation study of UV photo cured PMMA is analysed through nano indenter (Agilent Technologies-G200). The current work investigates the influence of PI concentration and curing time in achieving maximum mechanical properties for UV photopolymerized PMMA.

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