bei uns in der Schleiftechnik
Which productivity can be achieved in grinding advanced aerospace materials such as fiber-reinforced non-oxide
How fine can a cooling lubricant be filtered without losing its properties during grinding?
Do you know how current research results from grinding technology are directly implemented in industrial practice?
Do you already use Machine Learning to monitor your grinding process?
Do you want to optimize your tool grinding process?
Do you want to understand, monitor and optimize centerless grinding processes?
Can thermally induced displacements be predicted and compensated by numerical-analytical methods?
Can grinding win the race of being the most valuable technology for the manufacturing of cutting tools?
How do I achieve the desired quality with additively manufactured components?
Development in grinding of thin-walled components
Optimierte Schleifstrategien für Turbinenbauteile
Fiber-reinforced non-oxide ceramics (SiC/SiC) are innovative materials with high growth potential in the aerospace industry due to their
advantageous physical properties. Due to the manufacturing-related inaccuracies in shape, the SiC/SiC components often have to be ground
to their final dimensions. According to the state of art, the grinding process is characterised by low productivity due to the high
demand on surface and subsurface quality. This results in long grinding process times and thus has a negative effect on the profitability
of the grinding process. This problem is solved at the WZL through a systematic identification and analysis of multi-stage grinding
process strategies with regard to the achievable surface quality and the productivity when grinding fiber-reinforced non-oxide
ceramics (SiC/SiC). This approach enables manufacturers of SiC/SiC components to increase their productivity.
Sebastian Prinz, M. Sc
+49 (0) 241 80 20393
In the grinding industry, fine filtration is often used to keep the degree of contamination of the cooling lubricant as low as possible.
But how does this fine filtration influence the lubricant and its properties? In order to investigate this problem, a test rig at WZL
was set up which makes it possible to expose the cooling lubricant to high shear forces. The properties of the cooling lubricant are
determined and compared to its original properties. Based on this knowledge, recommendations for cooling strategies in grinding technology
David Braun, M. Sc
+49 (0) 241 80 20392
The Research Circle Grinding Technology (AKS) of the WZL is bringing together experts in the field of grinding technology and the expertise of companies
from the fields of grain and grinding wheel production, grinding machine production, cooling lubricant production, the automotive supplier industry
and the energy and aviation industries. This year's online annual meeting focused on new trends such as the grinding of high-temperature resistant
materials or assistance systems for process monitoring with machine learning. Many thanks to all members for their participation and the great support
during the project realisation.
Jannik Röttger, M. Sc
+49 (0) 241 80 24959
Integration of measuring systems in grinding machines for process monitoring is generally associated with huge financial cost and
engineering expense. An economical alternative to the conventional sensor-based ProcessMonitoring is the data-based ProcessMonitoring
of the existing signals from the machine control using MachineLearning algorithms. Dive into the current topics of DataScience
and IoT as a new member of the research circle grinding technology AKS and participate in the development of the data-based
ProcessMonitoring systems of tomorrow in collaboration with the WZL and multiple leading companies in grinding technology.
Christian Wrobel, M. Sc
+49 (0) 241 80 27372
Why don’t you take a look at our research projects. For example conducted WZL a project funded by DFG to create a model
predicting the grinding wheel wear dependent on the cemented carbide specification. Earlier projects already proved that
the grinding of cemented carbides is highly dependent on the cemented carbide specification. This research suggests that
in addition to influencing the machining behavior of the workpiece material, the specification also influences the wear
behavior of the grinding tool. Single grain scratching experiments and grinding experiments, in combination with the
analysis of the workpiece and the grinding tool, are the foundation for the model. These and other questions concerning
tool production are also being researched in the Industrial Research Circle Tooling Technology (AKWT).
Alexander Dehmer M. Sc
+49 (0) 241 80 24981
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.
Jannik Röttger M. Sc
+49 (0) 241 80 24959
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.
Marc Bredthauer M. Sc
+49 (0) 241 80 25416
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.
Ulrich Müller M. Sc
+49 (0) 241 80 28188
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.
Marius Ohlert M. Sc
+49 (0) 241 80 27429
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.
Sebastian Prinz M. Sc
+49 (0) 241 80 20393
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.
Jannik Röttger M. Sc
+49 (0) 241 80 24959