Iph Institute For Integrierte Produktion Hanover Ggmbh

Iph Institute For Integrierte Produktion Hanover Ggmbh

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Uttendorf S.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Eilert B.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Overmeyer L.,Iph Institute For Integrierte Produktion Hanover Ggmbh
At-Automatisierungstechnik | Year: 2017

This paper proposes a method for the automated generation of roadmaps for AGVs. So far the roadmaps are mostly generated manually, which leads to long and laborious planning phases. The presented method incorporates both mathematical roadmap algorithms as well as human knowledge in the form of a fuzzy inference system. The results of the expert system are evaluated in comparisons to the A∗ algorithm and to manually generated roadmaps on a real production layout. In both cases the expert system performs better. © 2017 Walter de Gruyter Berlin/Boston 2017.


Behrens B.-A.,Ifum Institute For Umformtechnik Und Maschinen | Behrens B.-A.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Kerkeling J.,Iph Institute For Integrierte Produktion Hanover Ggmbh
Production Engineering | Year: 2011

Many forged parts e. g. connection rods or box spanners feature cavities, holes or apertures, which have to be produced in an additional process step (in many cases warm piercing). The residual material, that remains at the cross sectional area of the piercing punch, so called web, has to be pierced in an additional manufacturing step. By integrating this separately performed operation into the final forging step the process chain can be shortened. However, up to date there is no information available on how the process parameters influence quality relevant factors like dimensional accuracy, surface quality, and fibre orientation in the pierced area when forming and piercing operations are combined. Therefore, a combined forging-/piercing process was designed and performed in two projects. In the first project, not discussed in this paper, forging temperature, tool and work piece material as well as the thickness of the web have been investigated. The results of these investigations showed that the variation of the inserted mass and the forging temperature have a distinct effect on the dimensional and form accuracy of the work pieces. The second project investigated different geometries of the piercing punch and the influence of a different forming sequence on tool stress and material flow. The geometry of punch shows no effect on the geometrical tolerances of the piercing while an inappropriate forming sequence leads to failure of the tool. © 2010 German Academic Society for Production Engineering (WGP).


Meers S.,Hanover gemeinnutzige GmbH | Nickel R.,Iph Institute For Integrierte Produktion Hanover Ggmbh
Productivity Management | Year: 2010

Short-term, considerable need rises in the production require short-term capacity rises by capacity flexibility which is connected with a reaction time. In the context of a project sponsored by the German research council a possibility has been developed to bridge the reaction time by a short-term, article general reduction of outputs. © GITO-Verlag.


Willeke S.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Nickel R.,Robert Bosch GmbH | Nyhuis P.,Leibniz University of Hanover
Productivity Management | Year: 2014

The production is exposed to a high coordination and communication needs due to the division of labor as a result of specialization. The indicators used for decision making often don’t have the same information base. With an information-based reorganization of tasks an increase of decision quality and speed is possible. © GITO Verlag.


Heissmeyer S.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Overmeyer L.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Muller A.,Hoft and Wessel AG
2012 International Conference on Indoor Positioning and Indoor Navigation, IPIN 2012 - Conference Proceedings | Year: 2012

Indoor positioning is an enabling technology for advanced intra-logistic applications that employ tracking and tracing of goods and vehicles. For these applications, a positioning technology must offer a sufficient trade-off between accuracy, range, and costs. In this paper we present a novel positioning system based on optical technologies that is designed for tracing vehicles in a logistic environment. The major innovations of the system are an active optical infrastructure allowing absolute positioning without any other data source, and, on the receiver side, a hybrid data processing approach that combines signal and image processing. Using these optical technologies, a high accuracy can be achieved at lower costs compared to other approaches. The static positioning error is below 0.1 m. The active optical positioning approach joins signal and image processing technologies to a low-cost and high accuracy system. While designed for intra-logistic applications the technology can be adopted other fields such as building and shop-floor navigation. © 2012 IEEE.


Heissmeyer S.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Muller A.,Hoft and Wessel AG | Overmeyer L.,Iph Institute For Integrierte Produktion Hanover Ggmbh
Logistics Journal | Year: 2013

Indoor positioning is the backbone of many advanced intra-logistic applications. As opposed to unified outdoor satellite positioning systems, there are many different technical approaches to indoor positioning. Depending on the application, there are different tradeoffs between accuracy, range, and costs. In this paper we present a new concept for a 4-degree-of-freedom (4-DOF) positioning system to be used for vehicle tracing in a logistic facility. The system employs optical data transmission between active infrastructure and receiver devices. Compared to existing systems, these optical technologies promise to achieve better accuracy at lower costs. We will introduce the positioning algorithm and an experimental setup of the system. © 2013 Logistics Journal.


Meyer M.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Stonis M.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Behrens B.-A.,Iph Institute For Integrierte Produktion Hanover Ggmbh
Production Engineering | Year: 2014

Preforming is an essential step in flashless forging processes. This paper describes the development of a four stage process chain for flashless forging of a two cylinder crankshaft with pin and flange. The process consists of cross wedge rolling, lateral extrusion, bi-directional forging and final forming, with cross wedge rolling being the essential step. The finite-element-analysis (FEA) performed with the software Forge 3 and experimental tests are executed with different process parameters, like billet and tool temperature, rolling velocity and steel. To reduce process steps, like lateral extrusion, a direct combination of cross wedge rolling and bi-directional forging is analysed with FEA-software Forge 3 for a one cylinder crankshaft without pin and flange. The one cylinder crankshaft is selected to reduce development effort. The results of the FEA give suitable forming angles α for cross wedge rolling and several geometric parameters for a modification of the bi-directional tool. © 2014, German Academic Society for Production Engineering (WGP).


Elsweier M.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Nickel R.,Iph Institute For Integrierte Produktion Hanover Ggmbh
Productivity Management | Year: 2010

An empirical survey identifies the current status of logistic controlling in German small and medium-sized enterprises. The IPH elaborated practical requirements regarding the tasks and goals of a logistic controlling. The article describes the results of the survey towards acceptance, focus, as well as need for further development of logistic controlling. © GITO-Verlag.


Schirrmacher S.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Overmeyer L.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Lorisch S.,Iph Institute For Integrierte Produktion Hanover Ggmbh
Ship Technology Research | Year: 2016

The condition-based maintenance of a marine gearbox poses special challenges because of the inaccessibility to the hull of the ship and harsh environment in the form of higher temperatures, continuous vibrations and salty sea air, which can lead to corrosion. In this article, the integration of a wireless sensor network with a marine gearbox is shown. The integration consists of sensor nodes that record characteristic measurement data, send them actively to a receiving unit and harvest energy from the environment for electrical supply after a one-time installation expenditure. The developed sensor node has a thermoelectric power supply that allows measurement intervals of less than 20 minutes. The recorded vibration data from the gearbox surface are sent via ZigBee wireless technology. By evaluating the envelope spectrum of the measured vibration data, the current rotational speed of the input drive shaft could be identified. © University of Duisburg-Essen 2016.


Willeke S.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Ullmann G.,Iph Institute For Integrierte Produktion Hanover Ggmbh | Nyhuis P.,Iph Institute For Integrierte Produktion Hanover Ggmbh
ICIMSA 2016 - 2016 3rd International Conference on Industrial Engineering, Management Science and Applications | Year: 2016

Rising electricity prices for industrial companies result in increasing energy costs and thus lower international competitiveness. Due to increasing electricity price fluctuations, savings in energy costs without capital-intensive investments are possible by implementing specific organizational methods to process energy-intensive orders at times of low prices and energy-low orders at times of high prices. © 2016 IEEE.

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