检索结果-内蒙古大学图书馆

23rd International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2023

作者： Uhlmann, E. Polte, M. Yabroudi, S. Lezama, S. Institute for Machine Tools and Factory Management IWF Technische Universität Berlin Germany Fraunhofer Institute for Production Systems and Design Technology IPK Germany

ISBN: (纸本)9781998999132

Electrical discharge machining (EDM) processes represent an established process for the machining of complex geometries in hard to cut and electrically conductive materials. Nevertheless, micro-electrical discharge drilling still poses the challenge of machining holes with diameters dh ≤ 50 μm. The preparation of even smaller pin tool electrodes demands a great amount of non-productive time, which often involves the use of additional electrical discharge dressing processes for its manufacturing. A possible solution is the use of single carbon fibres with diameters 5 μm ≤ del ≤ 10 μm as tool electrodes. The use of these single fibres comprises a challenge due to their geometrical and mechanical properties, e.g. diameter and brittleness. To overcome this challenge, an existing handling system for carbon fibres was re-designed considering the obstacles that arose with the use of previous versions of such systems. This includes the replacement of the liquid rubber coating of the movable clamping jaw in order to use foam rubber to achieve a better distribution of the clamping force that establishes the electrical contact between the carbon fibre and a conducting copper plate. The geometry of the borosilicate glass micro-pipette was redesigned to ensure an accurate positioning of the carbon fibre due to its inner tip diameter 15 μm ≤ dt ≤ 35 μm and to enable the use of fibre electrodes with a length of 15 mm ≤ le ≤ 25 mm. This hinders the deflection of the fibre tip during the machining process and enables the precise guidance of the fibre. Furthermore, the developed handling system was implemented for performing single discharge experiments, in which parameters such as open circuit voltage, charge current and discharge capacity were varied in order to determine their influence on the material removal process. © 2023 Euspen Headquarters.

关键词： Rubber

来源：评论

学校读者我要写书评

暂无评论

Increasing the Relative Density of Additively Manufactured Tungsten Carbide-Cobalt Tool Electrodes for EDM 38

Increasing the Relative Density of Additively Manufactured T...

引用

38th Annual Meeting of the American Society for Precision Engineering, ASPE 2023

作者： Uhlmann, Eckart Polte, Mitchel Hörl, Robert Reimann, Robert Braun, Thomas Hocke, Toni Technische Universität Berlin Institute for Machine Tools and Factory Management Berlin Germany Fraunhofer Institute for Production Systems and Design Technology Berlin Germany

ISBN: (纸本)9781887706599

The investigation of novel materials for the use of tool electrodes for electrical discharge machining (EDM) is necessary to meet the increasing demands for complex products to be machined. Continuous product developments require improvements in manufacturing processes such as Sinking Electrical Discharge Machining (S-EDM). To meet these requirements, the development of customized EDM-processes and innovative tool designs is essential. Additive Manufacturing (AM) enables the production of sophisticated tool electrode geometries. This includes internal flushing channels for EDM-processes with minimal design constraints. Laser Powder Bed Fusion (LPBF) is a suitable method for this purpose. The presented paper shows an investigation to further increase the relative density ρrel of additively manufactured S-EDM tool electrodes using tungsten carbide-cobalt (WC-Co) as material for tool electrodes. © 2023 Proceedings - ASPE 2023 Annual Meeting. All rights reserved.

关键词： Electrodes

来源：评论

学校读者我要写书评

暂无评论

Supporting Changes in Digital Ownership and Data Sovereignty Across the Automotive Value Chain with Catena-X

引用

Procedia Computer Science 2025年 253卷 374-383页

作者： Marvin Manoury Theresa Riedelsheimer Malte Hellmeier Tom Meyer Fraunhofer Institute for Production Systems and Design Technology IPK Pascalstrasse 8-9 10587 Berlin Germany Fraunhofer Institute for Software and Systems Engineering ISST Speicherstraße 6 44147 Dortmund Germany

Considering the concept of a Circular Economy, which entails several life cycles of, e.g., vehicles, their components, and materials, it is important to investigate how the respective Digital Twins are managed over the lifecycle of their physical assets. This publication presents and compares three approaches for managing Digital Twins in industrial use cases. For the aggregation of these approaches, a user-centered design approach has been used in the research project Catena-X which focuses on the automotive industry. The results are analyzed qualitatively based on aspects such as data ownership and data sovereignty. It was identified, that all three approaches have limitations and benefits which make them useful in different scenarios. An overview of their strengths and weaknesses is presented to select an appropriate approach In similar setups. The results described in this publication can be used to select the best update approach in data spaces where multiple stakeholders are able to update information on a single asset.

关键词： Digital Twins Ownership Circular Economy Data Sovereignty Supply Chain Catena-X

来源：评论

学校读者我要写书评

暂无评论

Injection mould measurement system for increasing manufacturing control and production quality 23

Injection mould measurement system for increasing manufactur...

引用

23rd International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2023

作者： Uhlmann, Eckart Trabasso, Luís Gonzaga Bolz, Robert Schweitzer, Luiz Hein, Christoph De Souza, Diego Fraunhofer Institute for Production Systems and Design Technology IPK Germany Institute for Machine Tools and Factory Management IWF Technische Universität Berlin Germany SENAI Innovation Institute for Manufacturing Systems and Laser Processing Brazil

ISBN: (纸本)9781998999132

Tool and mould making is one of the most important sectors of industrial manufacturing. Currently, over a third of polymer products are manufactured by injection moulding or stamping. These processes are complex, as the melted or heated polymers are subject to thermomechanical changes. Since injection moulding and stamping are mostly used for mass production, process repeatability and quality of the final product are very important. Improper adjustments of process variables lead to various defects in the final product along with high amount of waste and rejects. The need for measurement and control of the process is mandatory. Frequently, the tool is not operated by the owner of the mold or the end user of the plastic components, respectively, but by an injection molding service provider within the supply chain. Consequently, it is impossible for the tool owner to trace the quality of parts regarding the parameters applied for processing. This is crucial information to connect parts outside the tolerances to the respective process characteristics. The increase of quality in the production is achievable through correlating the processing parameters applied with the produced components. Therefore, the aim of the research herein is to develop an autonomous sensor system for monitoring injection moulding and stamping processes. The system comprises an external component of the tool in order to record and document the parameters applied such as tool temperature, pressure, number of machined parts and geolocation among others. In conjunction with a connected laser marking system for injection moulding, the unique identification of the components and the unchangeable connection of the production parameters with an individual component is enabled. The direct technological added value is given by the fact that the customer is able to monitor the production at any time, any place, comparing the actual production with the agreed and specified conditions. Furthermore, this info

关键词： Injection molding

来源：评论

学校读者我要写书评

暂无评论

DEM Simulation of Abrasive Brushing Processes on Additively Manufactured Workpieces 20

DEM Simulation of Abrasive Brushing Processes on Additively ...

引用

20th CIRP Conference on Modeling of Machining Operations in Mons, CIRP CMMO 2025

作者： Hoyer, Anton Uhlmann, Eckart Technische Universität Berlin Pascalstr. 8-9 Berlin10587 Germany Fraunhofer Institute for Production Systems and Design Technology IPK Pascalstr. 8-9 Berlin10587 Germany

Brushing with bonded abrasives is a finishing process mainly used for deburring, edge rounding, and surface roughness reduction. The brushing tools consist of flexible polymer filaments embedded with abrasive grains, allowing them to adapt to complex workpiece shapes. However, interactions between filaments lead to complex motion, chipping, and wear behaviors, making it difficult to predict work results. The discrete element method (DEM) has been shown to be effective in simulating process forces, contact areas, and filament interactions on flat workpieces. Consequently, this article focuses on processing geometrically complex workpieces, particularly additively manufactured turbine fan blades (Ni-Cr-Co), using round brushes with bonded silicon carbide. First, a vectorized iterative method is introduced to generate artificial filament patterns, enhancing DEM simulation accuracy compared to state-of-the-art filament pattern models. Subsequently, dry brushing experiments are carried out on a fan blade feature demonstrator, aiming to achieve homogeneous roughness reduction. The qualitative analysis of the contact surface suggests that results from DEM simulations can reduce the need for costly technological investigations and prototypes. © 2025 The Author(s).

关键词： Nickel alloys

来源：评论

学校读者我要写书评

暂无评论

Corporate Climate Protection Measures to Improve the Carbon Footprint in Production: A Systematic Development of a Toolbox with Climate Protection Actions for the Reduction of Greenhouse Gas Emissions in Small and Medium-Sized Enterprises 19th

Corporate Climate Protection Measures to Improve the Carbon ...

引用

19th Global Conference on Sustainable Manufacturing, GCSM 2023

作者： Budde, Felix Kohl, Holger Fraunhofer Institute for Production Systems and Design Technology IPK Pascalstraße 8-9 Berlin10587 Germany Technische Universität Berlin Pascalstraße 8-9 Berlin10587 Germany

ISBN: (纸本)9783031774287

Individual climate protection measures are already being successfully implemented by many companies. But often, there is a lack of comprehensive information for selecting and implementing the right measures that fit the individual company’s emissions profile. This paper presents the systematic development of a toolbox of climate protection actions for small and medium-sized enterprises in order to reduce greenhouse gas emissions. The development process followed a four-step methodological approach: conducting intensive research on climate protection measures in applied and practical literature, reducing and grouping the measures into their corresponding emission categories, structuring and categorizing the measures into specific types of areas, and providing detailed profiles and descriptions of each measure. The resulting list of climate protection actions follows underlying basic principles (i.e. improvement of the emission factor, reduction of emission-generating activities and behavioral changes) which allow an individual derivation of measures. In its final version, the toolbox provides small and medium-sized enterprises with a comprehensive and accessible resource for identifying and implementing effective climate protection actions according to their emissions profile. © The Author(s) 2025.

关键词： Greenhouse gas emissions

来源：评论

学校读者我要写书评

暂无评论

technology Radar for a Sustainable Biological Transformation in the Manufacturing Industry 19th

Technology Radar for a Sustainable Biological Transformation...

引用

19th Global Conference on Sustainable Manufacturing, GCSM 2023

作者： Mügge, Janine Berkhahn, Magda Knauf, Tobias Stark, Rainer Faßbender, Lynn Lange, Annika Riedelsheimer, Theresa Lindow, Kai Fraunhofer Institute for Production Systems and Design Technology IPK Pascalstraße 8-9 Berlin10587 Germany Technische Universität Berlin Pascalstraße 8-9 Berlin10587 Germany

ISBN: (纸本)9783031774287

Bio-inspired, bio-integrated, bio-intelligent product and production systems are new research approaches aimed at achieving sustainability in manufacturing. For the industrial application of new technological solutions, it is crucial to convey their added value from not only an economic but also an environmental perspective. The evaluation of their technological readiness plays an important role in implementation. This paper presents a technology radar developed and evaluated within German research project BioFusion 4.0 involving 13 industry and research partners. The paper outlines the development approach and its application by means of three technological examples. The technologies are categorized and assessed using four significant attributes of an effective biological transformation: (1) the mode of action (bio-inspiration, bio-integration, and bio-interaction);(2) the transformative character and (3), the technology—and (4) Sustainability Readiness Level. The technology radar comprises a step-by-step procedure to assess a technology by each criterion to enable different stakeholders, such as production planners or product developers to evaluate and identify suitable technologies according to their needs and business strategy. The application of the technology radar is demonstrated on the exemplary technologies of a digital twin with integrated life-cycle assessment, situation awareness monitor for networked production systems and bio-based 3D printing. © The Author(s) 2025.

关键词： Biotic

来源：评论

学校读者我要写书评

暂无评论

Sustainable Product Lifecycle Management – Implementation of a Digital Twin of a Biologically Transformed Product-Ecosystem

引用

Procedia CIRP 2024年 125卷 30-35页

作者： Sebastian Wehking Anne Seegrün Theresa Riedelsheimer Kai Lindow Fraunhofer-Institute for Production Systems and Design Technology IPK Pascalstr. 8-9 10587 Berlin Germany

Biological transformation is the transfer of principles of natural systems to technical materials, processes and systems. The essential concepts of biological transformation - inspiration (learning from the observation of nature for the adaptation of technology), integration (symbiosis of technical systems based on biological principles) and interaction (interweaving of nature with technology) - can be transferred to Industry 4.0 solutions. One of these solutions is the Digital Twin, which can be used to provide transparency of an individual product’s environmental impact and to positively influence it throughout all lifecycle phases. A Digital Twin can be seen a digital ecosystem that inherits various biological principles itself, but also serves as an enabler of biologically transformed products. The application of the principles of biological transformation to Industry 4.0 helps achieve sustainable value creation. Manufacturing and operating companies, leveraging operational data with the help of Digital Twins, are equipped to better understand a product ecosystem’s performance and identify constraining resources that determine its lifecycle sustainability. This paper demonstrates the concept development of a Digital Twin for a biologically transformed product-ecosystem with integrated sustainability assessment focused on the production phase and its corresponding user interface.

关键词： Biologicalisation Industry 4.0 Biological Transformation Sustainability Sustainable Manufacturing Digital Twin

来源：评论

学校读者我要写书评

暂无评论

Enabling digitally integrated product design and production through digital continuity and feedback to design

引用

Procedia CIRP 2024年 128卷 627-632页

作者： Tschiltschke Till Manoury Marvin Michael Riedelsheimer Theresa Lindow Kai Fraunhofer Institute for Production Systems and Design Technology IPK Pascalstraße 8-9 10587 Berlin Germany

Due to global and political influence, resilient and versatile production systems are unavoidable. Based on existing Product Lifecycle Management (PLM) systems there is a growing need for a consistent communication between machines and product design to enable integrated product and production process design. Core aspects are integrating the product design information directly into the production equipment and their feedback into the product design as well as into other phases of the product creation and usage. Therefore, a generalized production description language as well as an architecture for the digital integrated product design and production need to be developed. This paper presents the first results of a use case in the automotive industry. The approach of developing the functional architecture is shown. Several feedback to X approaches were researched in literature and analyzed regarding functional requirements for integration in the developed architecture. The results are the main basis for further implementation within the automotive production. Moreover, the main challenges and next steps are discussed.

关键词： product production system architecture production description language design methodology tools technologies

来源：评论

学校读者我要写书评

暂无评论

Developing Digital Twins for energy efficiency in the production phase of products

引用

Procedia CIRP 2024年 122卷 933-938页

作者： Sebastian Wehking Theresa Riedelsheimer Cansu Tanrikulu Kai Lindow Fraunhofer Institute for Production Systems and Design Technology IPK Pascalstraße 8-9 10587 Berlin Germany

The relevance of digital solutions to enable sustainable value creation, the monitoring and ultimately the reduction of the environmental footprint has increased. New information technologies and increased data availability along a product's lifecycle offer more tools to assess product sustainability than ever before. This paper presents how a Digital Twin needs to be designed to help monitor product-level energy efficiency and how such a Digital Twin can be implemented. State-of-the-art research on Digital Twins and their development, lifecycle assessment, and energy efficiency are introduced. There is a lack of evaluated implementations of methodical DT development in different scenarios, especially for the evaluation of product-level energy efficiency during production. Results of a research project with the focus on the development and implementation of Digital Twins are presented. The use case is set within the scenario of the sequential development of a product simultaneously with the development of the Digital Twin. The focus is put on the implementation of an energy consumption prediction and product carbon footprint analytics module as part of the Digital Twin. The development approach is presented and recommendations for the development of future Digital Twins are derived.

关键词： Digital Twins Sustainability Lifecycle Assessment Energy efficiency

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：