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Do you want to understand, monitor and optimize centerless grinding processes?


Centerless grinding is considered to be the supreme discipline of grinding processes. A larger number of process setting variables compared to external cylindrical grinding between centers makes process design and optimization very complex. A new concept of process monitoring for centerless grinding is currently researched by the Chair of Industrial Metrology at the Leipzig University of Applied Sciences and the WZL. The researchers from Leipzig have developed a method for oscillation diagnosis in centerless grinding machines using laser-optical sensors. The suitability of this measurement for predicting the workpiece quality is investigated in cooperation with the grinding experts at the WZL.

More informations:
Jannik Röttger M. Sc
+49 (0) 241 80 24959
J.Roettger@wzl.rwth-aachen.de



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Can thermally induced displacements in grinding machines be predicted and compensated by numerical-analytical methods?


A large part of the energy introduced during grinding is converted into heat. Since the cooling lubricant can not dissipate all the heat, thermally induced displacements in machine components occur, which have a negative influence on the component quality. To avoid component defects due to thermal displacement of machine components, numerical-analytical methods are developed at the #WZL as a part of the transregional collaborative research center SFB TR96. These methods allow a prediction of the thermo-mechanical load on the workpiece during the grinding process as a function of the grinding wheel topography. Thus enabling compensation for thermally inducted displacements.

More informations:
Marc Bredthauer M. Sc
+49 (0) 241 80 25416
M.Bredthauer@wzl.rwth-aachen.de



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Can grinding win the race of being the most valuable technology for the manufacturing of cutting tools?


In the cutting tool industry, machining of superhard materials like polycrystalline diamond and polycrystalline cubic boron nitride has always been a challenge. Despite the rise of laser processing as promising manufacturing technology, grinding is still widely used in the industry. This is mainly due to the high surface quality and due to the small heat-affected zone. In order to lower the grinding wheel wear and the processing time and thus boost the productivity of grinding superhard materials, we are constantly working on new grinding strategies, grinding tools, and process monitoring solutions in our lab at #wzl.

More informations:
Ulrich Müller M. Sc
+49 (0) 241 80 28188
U.Mueller@wzl.rwth-aachen.de



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How do I achieve the desired quality with additively manufactured components?


Many companies face the challenge of finding a suitable post-processing solution for their additively manufactured components to meet the tolerances after the heat treatment. In order to provide even better support as an independent partner, WZL has expanded its post-processing research field by three additional machines. The machines, which base on Abrasive Flow Machining (AFM), Robot-guided Centrifugal Finishing (RCF) and Vibratory Finishing (VF), are used in particular for the post-processing of additive manufactured components in cooperation with DAP. Futhermore, they are suitable for any application where components with complex geometry are manufactured with high demands on surface roughness.

More informations:
Marius Ohlert M. Sc
+49 (0) 241 80 27429
M.Ohlert@wzl.rwth-aachen.de



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Development in grinding of thin-walled components


In #aerospace, the #automotiveindustry as well as the energy and #medicaltechnology, thin-walled components are increasingly required and designed due to current trends such as #resourceefficiency and #lightweightconstruction. When grinding thin-walled components, adapted grinding and spark-out strategies are needed for grinding. The relationships between the component wall thickness, the process parameters and the component deformation as a function of the grinding and spark-out strategies for grinding thin-walled components are systematically researched at #WZL.

More informations:
Sebastian Prinz M. Sc
+49 (0) 241 80 20393
S.Prinz@wzl.rwth-aachen.de



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Optimierte Schleifstrategien für Turbinenbauteile


Turbinenschaufeln aus hochwarmfesten High-Tech-Werkstoffen müssen im Flugzeugtriebwerk höchsten thermischen und mechanischen Belastungen standhalten. Die hohe Härte und Zähigkeit dieser Werkstoffe erschweren die Zerspanung.
Optimierte Schleifstrategien für die wirtschaftliche Bearbeitung hochwarmfester Werkstoffe werden derzeit im Arbeitskreis Schleiftechnik AKS entwickelt. Dazu wird u. a. der Einfluss der CBN-Kornspezifikation auf die Schleifscheibenstandzeit bei der Bearbeitung von MAR M 247 untersucht. Basierend auf den Untersuchungsergebnissen werden Handlungsempfehlungen zur Produktivitätssteigerung in der industriellen Praxis abgeleitet.
Der AKS ist ein Forschungsnetzwerk mit aktuell 26 Mitgliedsfirmen. Gemeinsam werden zukünftige Trendthemen produzierender Unternehmen identifiziert und relevante Fragestellungen für die Schleiftechnik abgeleitet, die in Forschungsprojekten am Werkzeugmaschinenlabor WZL beantwortet werden. Unternehmen werden befähigt, aktuelle Forschungsergebnisse effizient und frühzeitig im eigenen Betrieb umzusetzen.

Weitere Informationen:
Jannik Röttger M. Sc      
+49 (0) 241 80 24959      
J.Roettger@wzl.rwth-aachen.de



Turbinen Turbinen


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