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Pischan M.,Institute of Production Management
Advanced Materials Research | Year: 2013

The production process (drilling and reaming) causes burrs at the intersection of cross holes. The removal of these burrs is crucial especially for security relevant parts like hydraulic valves in aircrafts. Burrs lead to undefined flow conditions and blocking of these valves. Until now, burrs of internal contours are often removed by manual processes. Security relevant systems are especially deburred by time consuming manual deburring processes. In some cases, this process requires up to 50% of the manufacturing time. To automate the deburring process industrial robots can be used. Typical applications are deburring [1] and fettling [2] of cast parts. There are only a few approaches for sensitive workpieces with high accuracy demands [3]. This paper presents an approach to optimize the deburring process for cross holes in titanium using industrial robots and a special deburring tool. The best suited tool for the application is selected after investigating several different deburring tools. All relevant parameters are optimized by experimental investigations to minimize the process time. The results are evaluated by measuring the secondary burr and the chamfer width respectively. © (2013) Trans Tech Publications, Switzerland. Source


Kellenbrink C.,Institute of Production Management | Herde F.,Institute of Production Management | Eickemeyer S.C.,An der University 2 | Kuprat T.,An der University 2 | Nyhuis P.,An der University 2
Procedia CIRP | Year: 2014

The condition of complex capital goods deteriorates during their operation. In light of scarce resources and the high residual value of used goods at the end of a life cycle, the primary goal is to restore or "regenerate" as many parts of the goods as possible so that their functional characteristics can be maintained or even improved. The characteristics of this regeneration-e.g., different repair paths or a high variance concerning the functionality of goods-create difficult challenges when planning regeneration processes. Due to the characteristics, planning approaches known for the remanufacturing of often low-value goods are not applicable for the regeneration. In this article we present the primary problems of the corresponding planning tasks and solution-targeted approaches to solve these problems. More precisely, we develop an embracing capacity and load-adjustment method for these regeneration processes, considering different planning horizons. In addition, we present a framework that demonstrates how to identify the most profitable regeneration requests. Furthermore, we concentrate on the selection of different regeneration modes that can be applied to regenerate capital goods. Finally, we address design options for capacity and load adjustment in the regeneration processes and the pool management. All planning and control approaches together represent a holistic planning approach for regeneration processes. © 2014 The Authors. Published by Elsevier B.V. Source


Eberspacher P.,Institute for Control Engineering of Machine Tools and Manufacturing Units ISW | Schraml P.,Institute of Production Management | Schlechtendahl J.,Institute for Control Engineering of Machine Tools and Manufacturing Units ISW | Verl A.,Institute for Control Engineering of Machine Tools and Manufacturing Units ISW | Abele E.,Institute of Production Management
Procedia CIRP | Year: 2014

As energy consumption is one of the main drivers for production and operational cost of a product, it is necessary to make operators of manufacturing units and machine tools aware of the current power consumption of their operating equipment. However, it is not sufficient to provide the current overall power consumption but to give different levels of detail. This paper presents an approach to combine power measurements, control signals and information with consumption simulation models to provide the operators with highly detailed power consumption data and how it is distributed over the components of their machine tools. An implementation of the monitoring approach on a HSC milling machine is presented in detail, followed by an overview of its use for energetic optimization. © 2014 Elsevier B.V. Source


Schlechtendahl J.,Institute for Control Engineering of Machine Tools and Manufacturing Units ISW | Eberspacher P.,Institute for Control Engineering of Machine Tools and Manufacturing Units ISW | Schraml P.,Institute of Production Management | Verl A.,Institute for Control Engineering of Machine Tools and Manufacturing Units ISW | Abele E.,Institute of Production Management
Procedia CIRP | Year: 2016

The need to increase resource and energy efficiency for a sustainable production has led to saving potential analyses and afterwards saving strategies in a multitude of disciplines: product design, supply chain management, process chain design, production process development, energy-optimal machine or component control and even machine tool and component design. Each of those strategies resulted in numerous improvements, however, they still lack reciprocal consideration. To overcome this deficit, a machine-independent energy control system to include any control- or operation-based energy optimizer will be introduced in this paper. It is based on real-time control information from the machine and software-based energy demand optimizers targeting the machining process, the machine tool components control as well as the overlaying production process. The control system itself ensures the correct cooperative operation of the three optimizer types, to enable the much needed reciprocal consideration of the optimizer's effects. © 2016 The Authors. Source


Tisch M.,Institute of Production Management | Hertle C.,Institute of Production Management | Cachay J.,Institute of Production Management | Abele E.,Institute of Production Management | And 2 more authors.
Procedia CIRP | Year: 2013

As a next challenge, in terms of enhancing employees' improvement abilities with the use of Learning Factories, existing education and training programs are remodeled by the means of a competency-oriented, scientific-founded didactic concept. Therefore, based on a multi-level study on Learning Factories focusing on their design and use, a systematic approach to further develop quasi-real, effective learning environments in the field of manufacturing systems is conceived. As a result competency-oriented Learning Factories meeting the industries' requirements can be implemented with the use of fewer input resources and an increased success in applied competencies in real situations. © 2013 The Authors. Source

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