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16th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2016

作者： Edelmann, Jan Eckert, Udo Groß, Stefan Gründig, Bernd Wedig, Heiko Usov, Victor O'hara, Neal Scanlan, Declan Cross, Graham Fraunhofer Institute for Machine Tools and Forming Technology IWU Chemnitz Germany An EKF Diagnostics Company Senslab Gesellschaft zur Entwicklung und Herstellung bioelektrochemischer Sensoren mbH Leipzig Germany Adama Innovations Ltd. 13 Webworks Forster Street Galway Ireland

ISBN: (纸本)9780956679086

FaBiMed is a European project established to develop new manufacturing strategies for medical micro devices, using polymer replication in production of cost effective miniaturized micro and nanostructured components in biocompatible and functional materials. One demonstration line is dedicated to compact disposable lab-on-chip devices and requires micro and nano-structuring of the mould surface in order to change wetting characteristics of microfabricated devices and enable them with additional microfluidic functional features such as micro-channels or cell filters. Such features must be effectively replicated by hot-embossing (HE) or microinjection moulding (IM), at the same time avoiding time-dependent clogging by residual polymer, after multiple replication cycles. The paper describes the mould manufacturing process combining four sequential technologies as well as the replication results.

关键词： Microfluidics

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Energy Visualization Techniques for machine tools in Virtual Reality

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Procedia CIRP 2016年 41卷 329-333页

作者： Luigi Pelliccia Philipp Klimant Marco Schumann Franziska Pürzel Volker Wittstock Matthias Putz Institute for Machine Tools and Production Processes Technische Universität Chemnitz Reichenhainer Str. 70 09126 Chemnitz Germany Fraunhofer Institute for Machine Tools and Forming Technology Chemnitz Reichenhainer Str. 88 09126 Chemnitz Germany

Energy-efficient machine tools are becoming a more and more important factor for competitive manufacturing processes. However, there is still a lack of appropriate visualization techniques that effectively support engineers and scientists to consider energy as an additional optimization and decision parameter in machine tool design and manufacturing. Virtual Reality has become an effective technology able to visualize very complex systems, providing the users with a high level of immersion and interactivity. For this reasons, a great deal of research activity has recently been focused on the development of advanced Virtual Reality-based visualization techniques capable of representing the energy flow through the machine tools in a clear and intuitive manner. This paper presents three different Virtual Reality-based energy visualization methods and a comparison of them based on a short user survey. In addition to 2D Billboard and 3D Sankey diagram, an innovative energy visualization technique based on 3D particle systems will be explained in detail. All three visualization methods have been implemented in one Virtual Reality model of a specific machine tool. The energy values have been determined from real measurements carried out directly on the real machine tool. This allowed a comparison of the three methods by means of their usability and understanding. Therefore a short user survey has been conducted in order to determine the advantages and disadvantages as well as improvement potential of the three visualization methods from the user's point of view.

关键词： Virtual reality machine tool Energy efficiency Energy visualization

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Towards Agile Engineering of Mechatronic Systems in machinery and Plant Construction

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Procedia CIRP 2016年 52卷 68-73页

作者： Thorsten P. Klein Gunther Reinhart Fraunhofer Institute for Machine Tools and Forming Technology (IWU) Project Group Resource-efficient Mechatronic Processing Machines Beim Glaspalast 5 86153 Augsburg Germany www.iwu.fraunhofer.de/rmv

Agile procedures (e.g. Scrum) are commonly used in rapidly changing environments of software engineering. Experts appreciate improvements in interdisciplinary collaboration, lead times and development costs by applying agile techniques as artifacts, meetings, roles and visualisation methods. Up to now, the use of agile procedures is still limited to IT-projects, due to a lack of profound knowledge in transferring agile techniques into interdisciplinary projects. This contribution presents the research work on Agile Engineering, a counterpart of Lean Product Development, by the systematic integration of agile techniques into the development process of mechatronic production systems. Thereto, an introduction and state of the art is given concerning the industry sector of machinery and plant construction as well as agile methodologies. The main focus of the paper is represented by the classification and comparison of Agile Engineering as well as the main features of integrating agile techniques into the mechatronic engineering process. According to the advanced research insights of the last years, Agile Engineering is a new enabler of success for establishing an agile production, providing promising approaches for coping with change and uncertainty efficiently.

关键词： Agility Mechatronics Engineering Process Lean Product Development Scrum

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Process Monitoring of Abrasive Waterjet Formation

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Procedia CIRP 2016年 46卷 43-46页

作者： M. Putz M. Dittrich M. Dix Technische Universität Chemnitz Institute for Machine Tools and Production Processes (IWP) Reichenhainer Str. 70 09126 Chemnitz Germany Fraunhofer Institute for Machine Tools and Forming Technology IWU Reichenhainer Str. 88 09126 Chemnitz Germany

Difficult to machine materials require innovative processing solutions for a stable and high quality contouring process of complex forms. Abrasive waterjet cutting gains in importance due to the continuous development of novel high performance materials and multi-material components. A reliable process monitoring during the machining operation becomes essential to avoid waste production. However, the measurement of the process conditions during abrasive waterjet cutting is difficult based on the rough environment inside the machining zone. In this paper appropriate methods for in-process monitoring of the jet conditions, in particular the critical nozzle wear as well as other process output parameters are being tested, discussed and classified.

关键词： Waterjet machining In-process measurement Monitoring

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Engineering activities — considering value creation from a holistic perspective

Engineering activities — considering value creation from a ...

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International Conference on Concurrent Enterprising

作者： Pascal Lünnemann Rainer Stark Wei Min Wang Paola Ibáñez Manteca Department for Virtual Product Creation Fraunhofer-Institute for Production Systems and Design Technology Berlin Germany Department for Machine Tools and Factory Management Technische Universität Berlin Berlin Germany Department of Industrial Engineering IQS-School of Professional & Executive Development Barcelona Spain

Modern value creation is characterized by collaboration of large networks of specialized companies. Due to market requirements and increasing competition, concurrent or simultaneous engineering has become the standard procedure in product development. Still, product development processes often follow the traditionally linear and sequential patterns, allowing for only a narrow scope of iterations. Milestone-driven models are widely used to control and steer such processes. In this article, the authors argue that proper understanding of knowledge flows in development project is an essential aspect to be regarded in design and organization of product development processes. Therefore, a new approach is proposed in this paper which considers the product development process as a set of Engineering Activities. Such activities can be seen as instantiations of processes and are the core of any value creation processes. During an experiment a group of students carried out a simple product development project within a controlled environment. The resulting model was then re-evaluated using survey results from a further student experiment. Both results indicate that the activity model can be applied to describe development projects and that it can be used to identify knowledge flows and barriers within development teams.

关键词： Product development Unified modeling language Companies Process control Solid modeling

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Analyzing the integration of technology platform strategies into the situational context of diversified companies 25

Analyzing the integration of technology platform strategies ...

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25th International Association for Management of technology Conference, IAMOT 2016

作者： Schuh, Guenther Ryschka, Simon Rollmann, Alexander Wetterney, Tim Laboratory for Machine Tools and Production Engineering RWTH Aachen University Steinbachstrasse 19 Aachen52074 Germany Fraunhofer Institute for Production Technology IPT Steinbachstrasse 17 Aachen52074 Germany

ISBN: (纸本)0981581781

The significance of technology platforms as interconnected networks of technological knowledge is steadily growing in diversified companies. The reason is that technology platforms support diversified companies to handle the conflicting priorities of fulfilling the customer demand for individualized innovations, while generating company-wide technological synergies. Hence, the success of diversified companies can be significantly affected by the implementation of technology platforms and the development of consistently integrated technology platform strategies. This implies that is essential for diversified companies to correctly integrate their technology platform strategies into their company's specific situational context. In practice however, the consistent integration of technology platform strategies into a diversified company remains a major challenge. The reason is mainly due to the fact that there is no established opinion about the specific situational context factors of diversified companies that need to be considered, when developing a technology platform strategy. Additionally, there is also no guideline on how these factors are influencing the platform strategy development. Therefore, in this paper we introduce a framework that illustrates the relevant situational context factors of diversified companies and describes their influence on technology platform strategies.

关键词： Industrial management

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Agile Engineering in Mechatronic Education Interdisciplinary Development of a Mechatronic System using Scrum

Agile Engineering in Mechatronic Education Interdisciplinary...

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Europe-Asia Congress on Mechatronics

作者： Thorsten P. Klein Benny Drescher Gunther Reinhart Project Group Resource-efficient Mechatronic Processing Machines (RMV) Fraunhofer Institute for Machine Tools and Forming Technology (IWU) Beim Glaspalast 5 86153 Augsburg Thorsten Project Group Resource-efficient Mechatronic Processing Machines (RMV) Fraunhofer Institute for Machine Tools and Forming Technology (IWU) Beim Glaspalast 5 86153 Augsburg

ISBN: (纸本)9781509017881

Agile procedures (e.g. Scrum) are applied in software engineering increasingly. These procedures enhance interdisciplinary collaboration, improvements of lead times and reduction of development costs. Hence, latest research activities are transferring such flexible techniques into machinery and plant construction, in order to cope with the rising software integration into mechatronic modules. As agile procedures have been omitted in mechanical engineering yet, we introduce a novel concept of a learning platform about Agile Engineering. This paper presents the background and experiences of Agile Engineering as well as the setting, the results and first educational achievements within our academic courses.

关键词： Agility Scrum Mechatronics Lean Product Development Development Process Learning Platform

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Faster temperature control systems for hot embossing and injection molding 15

Faster temperature control systems for hot embossing and inj...

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15th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2015

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

ISBN: (纸本)9780956679079

Research work aims to develop a fast, production suitable hot embossing technology including appropriate tool systems for low-cost and production-integrated manufacturing of high-precision microfluidic structures in polymer films. The implementation is demonstrated by structuring of microfluidic films for disposable diagnostic devices used in home-care and point-of-care applications. The approach focuses on the development and thermal design of a tool system for fast hot embossing on basis of a fast non isothermal process. Close contour tempering of the active parts is the core of this approach. Based on an industrial specification the paper will describe tempering strategy, design and simulation of the tool concept. Heat flux and heat capacities together with the power loss in the system are used for calculating the tempering cycle. Based on that, the setup of an optimized tool system consisting of heating elements and a refrigerant system is presented. The new tool concept is thermally characterized by thermocouple and infrared measurements. Furthermore the system was tested in a commercial hot embossing equipment to demonstrate the improvements. It could be shown that a cycle time between one and two minutes is possible, in comparison to cycle times of fifteen minutes in conventional hot embossing systems. Although the test system was not optimized so far, in the embossing tests all items were replicated correctly and the microfluidic function was ensured. The results of the research work are applicable also for the optimization of injection molding tool systems.

关键词： Microfluidics

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Investigation of Cooling and Lubrication Strategies for Machining High-temperature Alloys

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Procedia CIRP 2016年 41卷 835-840页

作者： Katja Busch Carsten Hochmuth Bernhard Pause Andrea Stoll Rafael Wertheim Fraunhofer Institute for Machine Tools and Forming Technology IWU Reichenhainer Straße 88 09126 Chemnitz Germany NILES – SIMMONS Industrieanlagen GmbH Zwickauer Straße 355 09117 Chemnitz Germany

Optimal and efficient machining of high-temperature alloys is one of the main goals set by the manufacturing technology today, taking into account the unique properties of these materials, the required performance and the process parameters. One of the most important parameters investigated and presented in this paper is the optimal cooling and lubrication strategy. The application of various hybrid cooling strategies such as high-pressure cooling, cryogenic cooling and aerosol dry lubrication offers the potential to extend profitability and energy efficiency as well as high performance and improved surface integrity. The paper introduces fundamental functions, cooling systems and relationships that characterize the efficient utilization on standard machine tools. Based on fundamental investigations conducted using high-temperature alloys with poor machinability such as Titanium alloy Ti6Al4 V and Inconel 718, relevant influencing parameters are derived and optimization options are presented for the cooling strategies.

关键词： Turning cryogenic machining high-pressure cooling

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Fast Determination of the Material Removal Characteristics in Pulsed Electrochemical Machining

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Procedia CIRP 2016年 46卷 123-126页

作者： G. Meichsner M. Hackert-Oschätzchen M. Krönert J. Edelmann A. Schubert M. Putz Fraunhofer Institute for Machine Tools and Forming Technology Reichenhainer Strasse 88 09126 Chemnitz Germany Professorship Micromanufacturing Technology Faculty of Mechanical Engineering Technische Universität Chemnitz 09107 Chemnitz Germany

Electrochemical machining (ECM) of metallic materials is a complex manufacturing process. Currently the design of the process parameters and the cathode geometry is determined by expensive and inefficient experiments. This paper introduces a method for a fast determination of the material removal characteristics in pulsed electrochemical machining (PECM). The determination is performed by help of removal experiments using a PEMCenter 8000. As example the material removal characteristics of stainless steel 1.4301 under PECM conditions are shown. Based on the resulting mathematical description of the material removal characteristics a design of PECM processes by analytical calculations or multiphysics simulation is feasible.

关键词： electrochemical machining precise electrochemical machining localized anodic dissolution material removal characteristics

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