Additive technology to create a tool for electroerosive processing

2021 ◽  
pp. 138-144
Author(s):  
N.S. Potashnikova ◽  
V.P. Smolentsev ◽  
M.G. Potashnikov
Keyword(s):  
Aerospace Industry ◽  
Russian Patent ◽  
Additive Technologies ◽  
Small Scale ◽  
Flexible Structure ◽  
Layer By Layer ◽  
Additive Technology ◽  
Metal Parts ◽  
New Methods ◽  
Metal Body

The paper considers new methods and tools for combined electroabrasive finishing of metal parts, and shows the advantages of such a tool over traditional methods of finishing shaping the surfaces of labor-intensive products made of difficult-to-process alloys. The possibilities of layer-by-layer application of materials using additive technology to reduce labor intensity and cost for combined processing of tools with layers of abrasive on the periphery of a metal body obtained from a low-melting alloy by the additive method are considered. The possibility of accelerated production of tools using this technology, which does not require significant costs for editing and sharpening for specific parts, is shown, which reduces the production time of technological equipment when launching new generations of products, primarily in the aerospace industry of mechanical engineering. The new method and design of the tool are protected by a Russian patent. Experimental operation of wheels made using additive technologies has shown that the use of such a tool in single and small-scale flexible structure production significantly reduces the complexity of manufacturing parts for finishing operations.

ELECTROCHEMICAL TREATMENT OF PARTS OBTAINED BY SELECTIVE LASER FUSION

2021 ◽  
pp. 3-12
Author(s):  
A.A. Nikiforov ◽  
◽  
S.A. Demin ◽  
K.M. Khmeleva ◽  
◽  
...  
Keyword(s):  
Surface Roughness ◽  
Industrial Production ◽  
Electrochemical Treatment ◽  
Additive Technologies ◽  
Laser Fusion ◽  
Layer By Layer ◽  
Labor Intensity ◽  
Additive Technology ◽  
Selective Laser Fusion

The use of additive technologies for the production of parts is one of the main trends in recent years in the field of industrial production. Application of the technology of «layer-by-layer growing» provides savings in materials, a significant reduction in labor intensity, and allows you to create parts of any complexity and configuration. To reduce the surface roughness values of parts manufactured using additive technology, the authors proposed a method of electrochemical treatment in acid electrolytes, which makes it possible to achieve a decrease in surface roughness values by more than 5 times compared to the original one, and to process parts of any complexity and configuration.

scholarly journals Revealing the Hierarchical Microstructure of Innovative Additively Manufactured Metal Parts with Conventional Light Microscopy

2021 ◽  
Author(s):  
Lavinia Tonelli
Keyword(s):  
Light Microscopy ◽  
Layer By Layer ◽  
Powder Bed Fusion ◽  
Additive Technology ◽  
Powder Bed ◽  
Hierarchical Microstructure ◽  
Metal Parts ◽  
Hierarchical Arrangement ◽  
Conventional Light Microscopy

AbstractAdditively manufactured parts are characterized by a peculiar microstructure, originated by the distinctive layer-by-layer process. In case of additive technology based on the localized melting of a metallic feedstock, as laser-based powder bed fusion (LPBF), the resulting microstructure has a hierarchical arrangement, consisting of macro- and microscopical features affecting the final properties. Commonly, several advanced metallographic techniques are adopted in order to reveal the LPBF microstructure. However, main microstructural features can be also qualitatively appreciated by means of conventional light microscopy. The present work aims at describing how the peculiar LPBF microstructure of the Co28Cr6Mo alloy can be characterized, along with its main microstructural features, by means of the sole light microscopy.

scholarly journals PyroMEMS as Future Technological Building Blocks for Advanced Microenergetic Systems

Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 118
Author(s):  
Jean-Laurent Pouchairet ◽  
Carole Rossi
Keyword(s):  
Building Block ◽  
Building Blocks ◽  
Small Scale ◽  
Technological Evolution ◽  
Research Groups ◽  
Function Block ◽  
The Past ◽  
New Methods ◽  
Safety And Reliability ◽  
Electronically Controllable

For the past two decades, many research groups have investigated new methods for reducing the size and cost of safe and arm-fire systems, while also improving their safety and reliability, through batch processing. Simultaneously, micro- and nanotechnology advancements regarding nanothermite materials have enabled the production of a key technological building block: pyrotechnical microsystems (pyroMEMS). This building block simply consists of microscale electric initiators with a thin thermite layer as the ignition charge. This microscale to millimeter-scale addressable pyroMEMS enables the integration of intelligence into centimeter-scale pyrotechnical systems. To illustrate this technological evolution, we hereby present the development of a smart infrared (IR) electronically controllable flare consisting of three distinct components: (1) a controllable pyrotechnical ejection block comprising three independently addressable small-scale propellers, all integrated into a one-piece molded and interconnected device, (2) a terminal function block comprising a structured IR pyrotechnical loaf coupled with a microinitiation stage integrating low-energy addressable pyroMEMS, and (3) a connected, autonomous, STANAG 4187 compliant, electronic sensor arming and firing block.

DYNAMIC MODEL OF COMBINED AGGREGATION OF ADDITIVE MANUFACTURING PROCESS

2021 ◽  
Author(s):  
A. V. Vinnichenko ◽  
Keyword(s):  
Mathematical Modeling ◽  
Additive Manufacturing ◽  
Process Model ◽  
Additive Technologies ◽  
Additive Models ◽  
Small Scale ◽  
Scale Production ◽  
Flexible Production ◽  
Optimization Criteria ◽  
Production Resources

The paper presents methods and approaches for mathematical modeling and rationalization of flexible additive manufacturing, as well as other processes by which it is possible to create additive models for their integration into the system of experimental or pilot production. The work has also formed and synthesized a process model, which includes flexible production indicators, service indicators, and a developed criterion base for their assessment. The work takes into account the optimization criteria, as well as maximizing and minimizing risks for additive manufacturing, taking into account the possible risk component when deploying new processes for experimental and small-scale production. The models and methods described in the article will make it possible to carry out mathematical modeling and subsequent improvements for the flexible production process using additive technologies, used as a means of achieving the rational use of existing production resources within the framework of existing scientific and production complexes.

Basis für den industriellen 3D-Druck in Stahl/Basics for industrial 3D printing for steel - Contribution to additive manufacturing of complex products in multi-variant and functional skeleton construction

2017 ◽  
Vol 107 (06) ◽  
pp. 415-419
Author(s):  
M. Hillebrecht ◽  
V. Uhlenwinkel ◽  
A. von Hehl ◽  
H. Zapf ◽  
B. Schob
Keyword(s):  
Additive Manufacturing ◽  
Functional Integration ◽  
Complex Geometries ◽  
Layer By Layer ◽  
Laser Additive Manufacturing ◽  
Complex Products ◽  
Metal Parts ◽  
Laser Joining ◽  
Automation Technology ◽  
Selection Of

Mithilfe laserbasierter generativer Fertigungsverfahren (Laser Additive Manufacturing – LAM) ist es möglich, potentiell komplexe Bauteilgeometrien variantenreich herzustellen. Damit kann Gewicht eingespart werden und Funktionen sind integrierbar. In Kombination mit Automatisierungs- und innovativer Lasertechnik in der Schweiß- und Schneidapplikation lässt sich dieser Prozess wirtschaftlich nutzen. Durch pulverbettbasierte Lasergenerierverfahren können metallische Bauteile schichtweise aufgebaut werden, jedoch ist die Auswahl der Werkstoffe limitiert. Im Forschungsprojekt StaVari (Additive Fertigungsprozesse für komplexe Produkte in variantenreicher und hochfunktionaler Stahlbauweisen) vereinen sich die neuesten Erkenntnisse in Material-, Laser-, Füge- und Automatisierungstechnik, um modernen Anforderungen der Automobilbranche in der Massenfertigung sowie bei der Medizintechnik in der Kleinserie gerecht zu werden.   Laser Additive Manufacturing LAM has the potential to generate complex geometries. Through this weight reduction, functional integration and multi-variant production is possible. In combination with automation and innovative laser technology applicated in welding and cutting, this process can be used economically. With powderbed based laser additive manufacturing metal parts can be built up layer by layer. However selection of available metals is limited. In the project StaVari latest findings in material-, laser-, joining and automation technology are joint by qualified partners to meet modern automotive demands in mass production and medicine technology for small batch series.

scholarly journals 3D print additive technology as a form of textile material substitute in clothing design – interdisciplinary approach in designing corsets and fashion accessories

2018 ◽  
Vol 69 (03) ◽  
pp. 190-196 ◽  
Author(s):  
KONČIĆ JASMINKA ◽  
ŠČAPEC JOSIPA
Keyword(s):  
Contemporary Art ◽  
Interdisciplinary Approach ◽  
Additive Technologies ◽  
Textile Material ◽  
Fashion Design ◽  
Additive Technology ◽  
3D Print ◽  
Clothing Design ◽  
Design Options ◽  
Interdisciplinary Process

This research paper enquires into the application of 3D print additive technology in fashion design. The research aims to find the design options for garments by substituting the textile material with new technological solutions. The focus of the paper is the interdisciplinary research of innovative corset and fashion accessories designs made using 3D print additive technologies. The main focus of the work is the interdisciplinary process of creating clothes ranging from preliminary sketches to prototypes within three different areas: contemporary art, fashion design and additive technology.

scholarly journals Expansion of technological capabilities of the electron beam welding installation

2021 ◽  
Vol 2077 (1) ◽  
pp. 012021
Author(s):  
I N Starkov ◽  
K A Rozhkov ◽  
T V Olshanskaya ◽  
D N Trushnikov ◽  
I A Zubko
Keyword(s):  
Electron Beam ◽  
Electron Beam Welding ◽  
Additive Technologies ◽  
Technological Capabilities ◽  
Beam Hardening ◽  
Expensive Equipment ◽  
New Methods ◽  
Beam System ◽  
Methods And Techniques ◽  
The Moment

Abstract The direction of electron beam technologies is promising and is rapidly developing. Quite recently, the electron beam was a tool for welding, and nowadays, electron-beam additive technologies and beam hardening technologies have become widespread. At the moment, there is no electron beam system that unites all these technologies. Expensive equipment has been developed to implement each technology. The article deals with expanding the technological capabilities of the 15E1000 electron-beam welding installation in order to implement new methods and techniques for processing metals with an electron beam.

Research on Deformation Prediction Method of Laser Melting Deposited Large-Sized Parts Based on Inherent Strain Method

2021 ◽  
Vol 871 ◽  
pp. 65-72
Author(s):  
Cheng Hong Duan ◽  
Xian Kun Cao ◽  
Ming Huang Zhao ◽  
Xiang Peng Luo
Keyword(s):  
Residual Stress ◽  
Laser Energy ◽  
Layer By Layer ◽  
Laser Melting ◽  
Forming Process ◽  
Deformation Prediction ◽  
Metal Parts ◽  
Inherent Strain ◽  
Inherent Strain Method ◽  
Strain Method

In the process of metal parts fabricated by Laser Melting Deposition (LMD), a high temperature gradient will generate due to the instantaneous high laser energy input, which will cause residual stress in the formed part of metal parts, the residual stress will result in defects like warping deformation or even cracking. In this paper, a finite element method based on inherent strain method is proposed to predict the deformation of metal parts fabricated by LMD. Firstly, combing with the birth and death element technology, a local model is established to simulate the layer-by-layer deposition in the LMD forming process, and the values of inherent strain is obtained. Secondly, the obtained inherent strain values is applied to large-sized part layer by layer, and the final deformation of large-sized part is calculated. Based on the proposed method, the efficiency of deformation prediction of large-sized metal parts fabricated by LMD could be effectively improved.

scholarly journals Mining the Spatial-Temporal Characteristics of Population Flow and Material Flow Using Big Data

2020 ◽  
Vol 2020 ◽  
pp. 1-20
Author(s):  
Xing Wang ◽  
Jianwan Ji ◽  
Biao Jin ◽  
Hongguang Chen ◽  
Shuhong Huang ◽  
...  
Keyword(s):  
Material Flow ◽  
Research Work ◽  
Research Area ◽  
Small Scale ◽  
Minority Population ◽  
Layer By Layer ◽  
Temporal And Spatial Distribution ◽  
Temporal Characteristics ◽  
Temporal Autocorrelation ◽  
Variation Characteristics

Population flow and material flow are the core elements of the “space of flows.” Studying the temporal and spatial distribution characteristics of these two types of flows (TToF) can provide us a greater understanding of the research area. Most of the existing works related to TToF only focus on exploring the difference characteristics of one of the members of TToF in a certain time or space scale in the research area. Different from these related works, the spatial-temporal characteristics of the population flow and material flow in Taiwan Province and the spatial-temporal autocorrelation of Taiwan’s expressway network are explored by means of multimembership and layer-by-layer refinement. The research work carried out in this paper includes the following: (1) studying the differentiated characteristics of the TToF in different time units; (2) studying the spatial differences among each type of the TToF under different scales; (3) dividing both the population flow and material flow into two subtypes and then analyzing the temporal variation characteristics of the four subtypes of flows; and (4) studying the global and local spatial-temporal autocorrelation of Taiwan’s expressway network. The results show the following. (1) The spatial-temporal differentiation characteristics of the TToF are obvious in different time units and on different scales. (2) The contribution of the population flow to the TToF in flow quantities is far greater than that of the material flow. (3) The population flow and material flow are dominated by the “minority population flow” and “small-scale material flow,” respectively. (4) Meanwhile, in Taiwan’s expressway network, there is a significant spatial-temporal positive correlation mainly reflected in the spatial first-order adjacent road sections.

A Novel Origami Inspired Delta Mechanism with Flat Parallelogram Joints

2020 ◽  
pp. 1-22
Author(s):  
Merve Acer Kalafat ◽  
Hasan Sevinc ◽  
Shahrad Samankan ◽  
Atakan Altinkaynak ◽  
Zeynep Temel
Keyword(s):  
Design Methodology ◽  
Small Scale ◽  
Layer By Layer ◽  
Parallel Mechanisms ◽  
End Effector ◽  
High Speeds ◽  
Parallel Movement ◽  
Pick And Place ◽  
Kinematic Models ◽  
Kinematic Performance

Abstract In robotics, origami-based design methodology can be used to create small scale parallel mechanisms with easier assembly processes. Delta mechanisms are one of the famous parallel mechanism used mostly in pick and place operations due to their capability to reach high speeds and accelerations. In this work, we present a novel Delta mechanism fabricated with fully 2D layer by layer methods. In our design we have eliminated manual 3D processes in order to provide parallel movement of the links. We have designed a new flat parallelogram providing pure translations in X-Y-Z directions respecting to the conventional kinematic models for Delta mechanism. The assembly process is reduced to an only cut – laminate – repeat steps which are very basic operations in 2D. The kinematic performance of the mechanism has been analyzed using a 6 DoF position sensor placed on the end-effector. The mechanism has a 20x20x20 mm3 cubic stable workspace with a 17.5 mm radius circular footprint when it is completely flat. The tests were done for circular trajectories having 10 mm radius circles with different heights and circles with different radiuses in a specific height. Despite having no feedback control from the end effector, the mechanism was able to follow the trajectory with 1.5 mm RMS precision. We have also changed the materials of the flexible layers in passive links and presented the trajectory results of the end-effector showing how it effects the kinematic performance of the mechanism.

Sign in / Sign up

Export Citation Format

Share Document