Inst. Werkzeugmaschinen und Fabrikbetrieb

185 Items

Recent Submissions
Innovative manufacturing technologies for the disassembly of consumer goods

Uhlmann, Eckart ; Elbing, F. ; Dittberner, J. (2004)

Ecological harmless disposal of used technical consumer products will become mandatory for producers and importing companies. This disposal policy will focus on product and material loops; used products will be disassembled and the parts and materials then recycled. Owing to environmental and legislative reasons, the importance of disassembly as a step in the process of recycling is steadily ri...

Enhanced product functionality with life cycle units

Seliger, Günther ; Buchholz, A. ; Kross, U. (2003)

Cycle economy is not only ecologically reasonable but also a chance for new business. Selling utilization instead of selling products is advantageous once additional costs for information processing and logistics are less than costs for underutilized capacity. A competitive provider offers product functionality in quality, time and location as required by the user. Lifetime component monitoring...

Process model based development of disassembly tools

Rebafka, Uwe ; Seliger, Günther ; Stenzel, Alexander ; Zuo, B. R. (2001)

Disassembly processes require flexible tools for loosening and handling operations. Today, disassembly processes demand a great deal of manual labour and a vast variety of tools. Partly destructive tools which generate and use new acting surfaces are able to increase the economic viability owing to their flexibility and their promotion of the reuse of components. This article describes selected...

Supporting fault diagnosis through a multi-agent architecture

Marzi, Ruth ; John, Patrick (2002)

In the industrial environment a short down-time of computer numerical control (CNC) machine tools is increasingly important. One approach to counter the loss of production is to make the machines more reliable, thereby reducing their times of non-use. Another is to enable machine operators to locate and to remove machine faults and their causes themselves, in order to reduce delay until mainten...

Spatial Programming for Industrial Robots through Task Demonstration

Lambrecht, Jens ; Kleinsorge, Martin ; Rosenstrauch, Martin ; Krüger, Jörg (2013)

We present an intuitive system for the programming of industrial robots using markerless gesture recognition and mobile augmented reality in terms of programming by demonstration. The approach covers gesture-based task definition and adaption by human demonstration, as well as task evaluation through augmented reality. A 3D motion tracking system and a handheld device establish the basis for th...

Simulationsgestützte Einflussanalyse der Eigenspannungs- und Verzugsausbildung beim Schweißen mit artgleichen und nichtartgleichen Zusatzwerkstoffen

Neubert, Sebastian (2018)

Die Hauptanliegen dieser Arbeit bestehen darin, den Einsatz der Schweißstruktursimulation durch eine Reduzierung des werkstoffbezogenen Modellierungsaufwandes zu fördern und einen Beitrag zum Verständnis der Anwendung von hochfesten hochlegierten Zusatzwerkstoffen beim Verschweißen hochfester, niedriglegierter Feinkornbaustähle zu liefern. Im Fokus stehen dabei numerische Einflussanalysen zur A...

Guidelines for the implementation of Lean and MTM techniques in remanufacturing factory planning

Guidat, Thomas (2018)

Der zunehmende globale Verbrauch begrenzter, nicht erneuerbarer Ressourcen erfordert dringend den Wandel der Produktionsparadigmen [Dob-11, Leo-11, Sel-10]. Eine mögliche Vorgehensweise zur Bedienung der wachsenden Nachfrage ohne proportionale Zunahme des Ressourcenverbrauchs ist ein Management von Altprodukten entsprechend ihrer jeweiligen Nutzungsphase [EMF-14, Sel-05,]. Die Refabrikation/Rem...

Ectoine protects DNA from damage by ionizing radiation

Schröter, Maria-Astrid ; Meyer, Susann ; Hahn, Marc Benjamin ; Solomun, Tihomir ; Sturm, Heinz ; Kunte, Hans Jörg (2017-11-10)

Ectoine plays an important role in protecting biomolecules and entire cells against environmental stressors such as salinity, freezing, drying and high temperatures. Recent studies revealed that ectoine also provides effective protection for human skin cells from damage caused by UV-A radiation. These protective properties make ectoine a valuable compound and it is applied as an active ingredie...

Ultrasonic assisted milling of reinforced plastics

Uhlmann, Eckart ; Protz, F. ; Stawiszynski, B. ; Heidler, S. (2017)

The milling of glass and carbon fibre reinforced plastics provides manufacturers from the automotive and aerospace industry with major challenges. The high carbon and glass fibre content increases the risk of insufficient production qualities. The abrasive fibres cause cutting edge rounding which results in the issue that the comparatively thick glass fibre cannot be reliably cut, while the car...

Continuous maintenance and the future – foundations and technological challenges

Roy, Rajkumar ; Stark, Rainer ; Tracht, Kirsten ; Takata, Shozo ; Mori, Masahiko (2016-06-30)

High value and long life products require continuous maintenance throughout their life cycle to achieve required performance with optimum through-life cost. This paper presents foundations and technologies required to offer the maintenance service. Component and system level degradation science, assessment and modelling along with life cycle ‘big data’ analytics are the two most important knowl...

Carbon fibre recycling from milling dust for the application in short fibre reinforced thermoplastics

Uhlmann, Eckart ; Meier, Paul (2017)

A new approach to reuse accruing chips and dust from milling operations of carbon reinforced plastics (CFRP) is studied, show-ing how CFRP milling dust, in comparison to primary and pyrolysed fibres, can find application as a filler material in thermo-plastic granulates. Recent examinations show an overall better handling of milling dust when separating it into different classes of fibre length...

Condition monitoring in the cloud

Uhlmann, Eckhart ; Laghmouch, Abdelhakim ; Hohwieler, Eckhard ; Geisert, Claudio (2015)

Due to the very high demands on availability and efficiency of production systems and industrial systems, condition-based maintenance is becoming increasingly important. The use of condition monitoring approaches to increase the machine availability and reduce the maintenance costs, as well as to enhance the process quality, has increased over the last years. The installation of industrial sens...

Method for automated structuring of product data and its applications

Adolphy, Sebastian ; Grosser, Hendrik ; Kirsch, Lucas ; Stark, Rainer (2015)

Product structures represent the data backbone for through-life management of complex systems. Product Lifecycle Management (PLM) Systems are used to maintain product structures and track product changes. However, in maintenance, repair and overhaul (MRO) product composition often is unknown when MRO service providers are not the original manufacturers. Thus, MRO processes start with an exhaust...

Realization of a learning environment to promote sustainable value creation in areas with insufficient infrastructure

Muschard, Bernd ; Seliger, Günther (2015)

To increase the rationally demanded sustainability with its ecologic, environmental and social dimensions, innovative technology shall be exploited. For example waste can be used by means of closed loop material cycles for the production of new products. The understanding of such material cycles can help to deal responsibly with resources. Considering the limited awareness of more than seven bi...

Influence of the built-up edge on the stress state in the chip formation zone during orthogonal cutting of AISI1045

Uhlmann, Eckart ; Henze, Steffen ; Brömmelhoff, Katrin (2015)

In-situ strain measurements with high energy synchrotron radiation during orthogonal cutting of AISI1045 were carried out. Thereby it was possible to determine the stress state in the chip formation zone during the cutting process. As such, observations regarding the formation of built-up edges during the cutting process have been made. The formation of a built-up edge on the cutting tool is a ...

Investigating the energy consumption of the PECM process for consideration in the selection of manufacturing process chains

Swat, Martin ; Rebschläger, Andreas ; Trapp, Kirsten ; Stock, Tim ; Seliger, Günther ; Bähre, Dirk (2015)

The initial planning of manufacturing process chains provides the opportunity to sustainably influence the energy requirement for the manufacturing of industrial products by selecting the process chain with the lowest energy consumption. However, the task is still challenging due to the need for energy consumption data of manufacturing equipment. In this paper, the analysis of the energy consum...

Method to create proposals for PSS business models

Barquet, Ana Paula Bezerra ; Steingrímsson, Jón Garðar ; Seliger, Günther ; Rozenfeld, Henrique (2015)

Different authors of the product-service bundle literature agree on the fact that business models are central to implement PSS successfully. However, most of the studies about PSS business models mention its importance but do not explore which content should compose such models. Furthermore, PSS business models are explored taking into account a partial view of business model dimensions. Finall...

Role-play based assessment of IPS2-specific intellectual capital

Wewiór, Jakub W. (2015)

Due to the idea to offer costumer oriented products and services as Industrial product-service systems (IPS2) the interactions between provider and costumer become intensive. This is why IPS2 are mentioned as socio-technical systems. While having direct contact to the customer staff the provider employees must be able to fulfil cross-company interactions. The challenges of such an IPS2 relation...

Multi-objective shop floor scheduling using monitored energy data

Stock, Tim ; Seliger, Günther (2015)

Modern factories will become more and more directly connected to intermittent energy sources like solar systems or wind turbines as part of a smart grid or a self-sufficient supply. However, solar systems or wind turbines are not able to provide a continuous energy supply over a certain time period. In order to enable an effective use of these intermittent energy sources without using temporary...

Enhancing technological innovation with the implementation of a sustainable manufacturing community

Severengiz, Mustafa ; Seidel, Johannes ; Steingrímsson, Jón Gardar ; Seliger, Günther (2015)

The global challenge of sustainable value creation can be coped with by raising human awareness about it all around the world. Increasing process effectiveness and efficiency in view of shrinking natural resources, increasing competitiveness and profitability by selling functionality and service instead of physical products give strategic references for the development of the so called sustaina...