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17th IFAC Symposium on Information Control Problems in Manufacturing INCOM 2021

作者： Kiesel, Raphael Weiss, Arno Schmitt, Robert H. WZL RWTH Aachen University Aachen Germany Fraunhofer Institute for Machine Tools and Forming Technology IWU Chemnitz Germany Fraunhofer Institute for Production Technology IPT Aachen Germany

To enable interoperable communication between enterprise software and industrial assets, the Internet of Production reference model suggests a single platform for routing and data access. This Middleware+ must not only act as a central message broker but also meet the challenge of incompatible data models. However, its exact capabilities remain blurred. We first compile relevant technologies and standards to integrate. Definition of requirements and a software architecture proposal follow. Considering the heterogeneous degree of connectivity within producing companies, we then sketch the path to implementation based on maturity levels. The result is a distributed information system architecture ensuring the rigorous use of semantic information models throughout the entire lifecycle of a product. © 2021 The Authors. This is an open access article under the CC BY-NC-ND license (http://***/licenses/by-nc-nd/4.0)

关键词： Interoperability

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Improvement of cutting tools using laser-induced periodic surface structures for machining Aluminium alloy Al 6061 T6 17

Improvement of cutting tools using laser-induced periodic su...

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Laser-based Micro- and Nanoprocessing XVII 2023

作者： Baumann, Robert Bouraoui, Yasmine Teicher, Uwe Selbmann, Erik Ihlenfeldt, Steffen Lasagni, Andrés Fabián Institute for Manufacturing Technology Technische Universität Dresden George-Baehr-Str. 3c Dresden01069 Germany Institute of Mechatronic Engineering Technische Universität Dresden Helmholtzstraße 7a Dresden01069 Germany Fraunhofer Institute for Machine Tools and Forming Technology IWU Nöthnitzer Straße 44 Dresden01187 Germany Fraunhofer Institute for Material and Beam Technology IWS Winterbergstraße 28 Dresden01277 Germany

ISBN: (纸本)9781510659230

Improving processes sustainability to address upcoming demands in metal processing industries such as innovative and hard to process materials has become a major topic for many manufacturers. Therefore, new tool material compositions or surface coatings are continuously developed. In this context, surface functionalization of cutting tools is foreseen as a convenient approach for minimizing material losses and thus energy consumption. In this work, laser induced periodic surface structures (LIPSS) are used for manufacturing quasi-periodic line-like patterns on tungsten carbide inserts. The textured tool surfaces show low spatial frequency LIPSS (LSFL) with spatial periods of 500 nm to 600 nm as well as high spatial frequency LIPSS (HSFL) with a spatial period of ~100 nm. Furthermore, the texturing is applied on rake and flank faces of the cutting tools with different offsets to the edge between 0 and 0.2 mm. The wettability analysis reveals a decrease of static contact angles for the used cutting fluid (CIMSTAR) from 38° to 12°, suggesting an improved cooling process during the machining step. In addition, turning experiments under lubricated conditions are carried out on Al 6061 T6 parts to investigate the tribological performance. The used LIPSS-functionalized cutting tools could effectively decrease the main machining forces by 10 %, the feed force by 21 % and the passive force by 9 %. Furthermore, the laser-processed tools generate thinner chips, which leads to a decrease in surface roughness by 31 % of the aluminum work piece. © 2023 SPIE.

关键词： Turning

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Characterization of 3D printed polymer mounts in translational and rotational DOF 30

Characterization of 3D printed polymer mounts in translation...

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30th International Conference on Noise and Vibration Engineering, ISMA 2022 and 9th International Conference on Uncertainty in Structural Dynamics, USD 2022

作者： Troge, J. Georgi, T. Hensel, E. de Klerk, D. Graf, M. Burkhardt, M. Fraunhofer Institute for Machine Tools and Forming Technology IWU Nöthnitzer Straße 44 Dresden01187 Germany VIBES.technology Molengraaffsingel 14 Delft2629JD Netherlands Fraunhofer Institute for Chemical Technology ICT Joseph-von-Fraunhofer Str. 7 Pfinztal76327 Germany

ISBN: (纸本)9789082893151

Mounts are important transfer elements to isolate structure-borne sound from a source to a receiver. The dynamic transfer behavior of a mount can be described using frequency dependent dynamic stiffness and damping. For determination of these parameters, a mount can be abstracted as a two-port element. The stiffness matrix of this element includes input, output and transfer stiffnesses for translational and rotational DOF. Especially the measurement of rotational DOF can be a challenge. A promising approach for this is the Virtual Point Transformation. Hereby, the dynamic behavior in a virtual point of a structure is calculated by combining signals from several vibration sensors. This approach was used to determine stiffness matrices of different polymer mounts, which were manufactured using a 3D printing process to ensure direction-dependent dynamic properties. This paper deals with the practical implementation of the method as well as the presentation of the results and deviations of the dynamic transmission behavior of the polymer mounts. © 2022 Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics. All rights reserved.

关键词： Stiffness matrix

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Definition and Description of Matrix Production Systems

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Procedia CIRP 2024年 130卷 1875-1880页

作者： Daniel Ranke Michael Trierweiler Patricia Berkhan Marc Münnich Thomas Bauernhansl Fraunhofer Institute for Manufacturing Engineering and Automation IPA Nobelstr. 12 70569 Stuttgart Germany Institute of Industrial Manufacturing and Management IFF Nobelstr. 12 70569 Stuttgart Germany Fraunhofer Institute for Machine Tools and Forming Technology IWU Reichenhainer Straße 88 09126 Chemnitz Germany

The industry’s use of adaptable production systems, such as matrix production, is increasing. However, these systems vary in their specific details. The lack of a unified definition, delimitation, and description hinders comparability and the transfer of lessons learned between different systems. This paper aims to propose a comprehensive definition of matrix production and differentiation between different implementation forms. To achieve this, the paper first examines existing approaches to define and describe production systems and their manifestations. Various frameworks and models have been proposed in the literature, but they often focus on specific aspects of production systems, neglecting the complexity of matrix production. The paper identifies common elements and challenges in defining and describing production systems by analyzing these approaches. A second investigation analyzes various existing descriptions of matrix production from the scientific literature. While some definitions focus on the organizational structure, others emphasize operational aspects. By synthesizing these definitions, the paper proposes a comprehensive definition of matrix production encompassing both dimensions. Furthermore, the paper includes cases of industrial implementations as a third investigation. These cases provide insights into the practical application of matrix production systems across different industries. The paper identifies common characteristics, challenges, and benefits associated with matrix production by analyzing these implementation examples. Finally, all three investigations are combined to create a unified definition and a complementary descriptive model. The proposed framework provides a systematic approach to define and describe matrix production systems. It allows for a better understanding and comparison of different implementations, facilitates the transfer of lessons learned, and promotes the exchange of best practices. This framework will enable r

关键词： Matrix Production Framework Definition

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Reaming of carbon fibre reinforced plastics: Influence of tool geometry on process forces and tool wear 14

Reaming of carbon fibre reinforced plastics: Influence of to...

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14th CIRP Conference on Intelligent Computation in Manufacturing Engineering, CIRP ICME 2020

作者： Sauer, Konstantin Putz, Matthias Chemnitz University of Technology Reichenhainer Strasse 70 Chemnitz09126 Germany Fraunhofer Institute for Machine Tools and Forming Technology Reichenhainer Strasse 88 Chemnitz09126 Germany

Due to the high abrasive wear and the tendency to workpiece damages, the manufacturing of high-quality bores in carbon fibre reinforced plastics (CFRP) is still one of the major goals in tool development. In this work, reaming tests are performed on CFRP in order to characterise the relationship between tool geometry, process forces and tool wear. After a preliminary investigation of a taper reamer, diverse carbide tools have been tested which exhibit different values of rake and clearance angle. The forces measurement took place using a rotating dynamometer, while the evaluation of the tool wear has been realised by microscopic images via structured light projection. Different forms of wear appear, while hardly any differences in the force curves can be detected when applying different angles of the cutting wedge. © 2021 The Authors. Published by Elsevier B.V.

关键词： Carbon fiber reinforced plastics

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Identification and classification of color textures 30

Identification and classification of color textures

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30th International Conference on Computer Graphics and machine Vision, GraphiCon 2020

作者： Mende, Mattias Wiener, Thomas Fraunhofer Institute for Machine Tools and Forming Technology IWU Chemnitz Germany

This article describes, how color textures can be reliably detected and classified in the production process independent of external parameters such as brightness, object positions (translation), angulars (rotation), object distances (scaling) or curved surfaces (rotation + scaling). The methods described here are also suitable for reliably classifying at least 18 color textures even if they differ only slightly from each other optically. The online classification of color textures is a classic task in the wood, furniture and textile industry. For example, unwanted defects or partial soiling on moving webs can be reliably detected regardless of fluctuations in brightness and/or shadows during process operation. Algorithms has been developed for teach-in with RGB-HSI-transform, set fewer segments on the color textures of each class with e.g. 24x24 Pixel, use suitable transformations {HSI}, e.g. 2D-FFT for formation characteristic 2D spectral mountains in these segments, extraction of statistical features and setting up the individual classifiers. Algorithms has been developed for identification & classification in process operation with extraction of statistical characteristics and methods of robust classification. The implementation of the methods, the triggering of the color cameras, the processing of the color information including the output of the results to the process control is done with the data analysis program Xeidana®. © 2020 for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

关键词： Color

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Energy efficiency and energy flexibility in matrix production systems

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Procedia CIRP 2025年 134卷 945-950页

作者： Marc Münnich Steffen Ihlenfeldt Sebastian Thiede Fraunhofer Institute for Machine Tools and Forming Technology IWU Reichenhainer Strasse 88 09126 Chemnitz Germany Institute of Mechatronic Engineering Technical University Dresden Helmholtzstr. 7a 01069 Dresden Germany Department of Design Production and Management University of Twente De Horst 2 7522 LW Enschede The Netherlands

Competitive and regulatory pressure force companies to produce more flexible and reactive to market demands and also include electrical energy-related considerations in production system planning and operation to reduce energy cost and environmental impact. Matrix production systems are perceived to cope with turbulent market environments but are only investigated from a logistics point of view. Potentials regarding energy efficiency and energy flexibility that arise from the inherent flexible production infrastructure remain unclear. This paper aims to systematically investigate the potential contributions of the flexible production structures and to point out general hypotheses about synergies as well as conflicts for logistics and energy-related target dimensions. These are evaluated in a simulation study based on an industrial use case. Results indicate that there are various control levers to support energy efficiency as well as energy flexibility together with logistics target dimensions in MPS.

关键词： Matrix production Discrete-event simulation Energy efficiency Energy flexibility

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Tool concept for structure rolling to improve tribologically stressed components 20

Tool concept for structure rolling to improve tribologically...

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20th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2020

作者： Schmidt, Torsten Schneider, Jörg Edelmann, Jan Fraunhofer Institute for Machine Tools and Forming Technology IWU Chemnitz Germany

ISBN: (纸本)9780995775176

Extensions of functional ranges and increases in efficiency are among the constant companions in automotive engineering as well as in machine tool industry. In most cases, increased performance requirements meet lower or constant component dimensions, whereby the functional surfaces are exposed to higher loads. These are often components subject to high tribological stress, such as friction bearings or cylinder liners. Against this background, these surfaces are often functionalized by coatings or microstructures in order to meet the increased requirements. For surface micro structuring, a number of processes are known which differ in their suitability for specific applications and series production. Structure rolling offers great potential for the structuring of rotationally symmetric components. With this process the positive structure of the embossing roller is replicated onto the workpiece surface under a defined contact force. This comparatively simple method of structure generation enables a fast and flexible process for transferring different structural geometries to extensive component surfaces. The publication focuses on structure rolling as efficient manufacturing technology. Within the scope of several research projects, various tool concepts have been implemented and advanced, whereby the current tool design is presented and discussed. In addition, the dimensioning and production of the positive structure on the embossing roller by means of laser structuring is described. The potentials of the process are shown by means of an application-oriented example. Copyright © Proceedings of the 20th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2020. All rights reserved.

关键词： Tribology

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The RaRe2 Attempt as a Holistic Platform for Decision Support in Rapidly Changing Process Chains 9th

The RaRe2 Attempt as a Holistic Platform for Decision Suppor...

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Production Processes and Product Evolution in the Age of Disruption - Proceedings of the 9th Changeable, Agile, Reconfigurable and Virtual Production Conference CARV2023 and the 11th World Mass Customization and Personalization Conference MCPC2023

作者： Teicher, Uwe Ben Achour, Anas Selbmann, Erik Demir, Ozan Emre Arabsolgar, Dena Cassina, Jacopo Ihlenfeldt, Steffen Colledani, Marcello Fraunhofer Institute for Machine Tools and Forming Technology IWU Pforzheimer Straße 7a Dresden01189 Germany Department of Mechanical Engineering Politecnico di Milano Via La Masa 1 Milan20156 Italy Syxis VSI Europos pr. 122 Kaunas46351 Lithuania Institute of Mechatronic Engineering Technische Universität Dresden Dresden01069 Germany

ISBN: (纸本)9783031348204

The trend towards globalization is increasingly being questioned or put under the microscope for social, political, and economic policy reasons. Due to the closely net-worked trade relations unpredictable events like pandemics, natural disasters, technical disruptions of supply chains and political conflicts can have considerable economic and social consequences. However, the central point is the constantly and rapidly changing market conditions to which it is necessary to react, or which must be shaped in order to adequately and successfully counter new technologies or new competitors. Within this paper it is worked out that based on targeted support of decision makers from top management to lower management and of the executing staff, the economic consequences for companies can be lowered with data-driven approaches and furthermore the. The objective of this paper is to help tackling reconfiguration needs via a holistic approach with the human being in the centre. The central hypothesis consists of the fact that with standards and defined methods, data-driven tools such as the digital twin or dedicated software applications for decision support specifically for information-based decisions, it is possible to deal more robustly and resiliently with rapid changes in the business environment. Based on exemplary use cases of automotive and medical technology as well as precision manufacturing of optical components, a holistic ecosystem platform RaRe2 will be developed, which will be disseminated as a reference for innovative software concepts on an industrial scale. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Supply chains

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A case study on the use of open source hardware in mechanical engineering

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Procedia CIRP 2024年 128卷 680-685页

作者： Cäcilia Veliu Valentin Petzold Dirk Reichelt Maximilian Stange Steffen Ihlenfeldt Dresden University of Applied Sciences Friedrich-List-Platz 1 01069 Dresden Germany Fraunhofer Institute for Machine Tools and Forming Technology IWU Reichenhainer Strasse 88 09126 Chemnitz Germany Institute of Mechatronic Engineering Technical University Dresden Helmholtzstr. 7a 01069 Dresden Germany

Open Source Hardware (OSH) enables innovative developments and business models. The OSH approach creates new forms of cross-company product development and community-based innovation processes. Open source has been state of the art in software industry for years. When it comes to OSH projects, however, the focus is primarily on the consumer sector. The use of OSH for industrial products, especially in mechanical engineering, is still in its early stages. The paper presents a case study on the development of an application module based on OSH components in a R&D testbed. The developed module is intended to enable electronic functional testing. For this purpose, the development process involved, among other things, creating solutions for a tool changing system. Using the case study, we analyse the advantages and disadvantages of the open source licenses used and derive implications for the R&D process. Building on this, various concepts for the use, adaptation and expansion of OSH components and the resulting implications for development processes and business models are presented. The case study is used to analyse which established open source software concepts can be transferred to material assets, but also which additional requirements arise from OSH components, e.g. in the area of safety.

关键词： Open Source Hardware Open Innovation Design: challenges & innovation

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