Alexander Geist
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View article: Coupled CFD model of tool environment and workspace to determine the convective heat transfer in jet cooling of milling processes in machine tools
Coupled CFD model of tool environment and workspace to determine the convective heat transfer in jet cooling of milling processes in machine tools Open
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Investigation of Tool Cooling and Heat Transfer Using Computational Fluid Dynamics Simulations Open
Thermal errors remain one of the biggest challenges for the precision of cutting machine tools. Aside from optimizations in the machine tool design and behaviour, optimal cutting process parameters and targeted usage of cutting fluid or al…
Concept of Integrating a Hybrid Thermal Error Compensation Into an Existing Machine Tool Control Architecture Open
Thermal error compensation via a numeric control (NC) system is a proven option for upgrading the precision of machine tools. The main advantage is the generally cost-effective application, as no changes to the machine design are necessary…
Training of artificial neural networks with reduced-order models for the prediction of thermal errors on machine tools Open
Thermal errors are among the most significant factors affecting the positioning accuracy of a machine tool. This paper demonstrates the advantages of combining reduced-order model (ROM) finite element method (FEM) simulations with data-dri…
View article: Correction of Thermal Errors in Machine Tools by a Hybrid Model Approach
Correction of Thermal Errors in Machine Tools by a Hybrid Model Approach Open
Thermally induced position errors are one of the main error sources on the workpiece caused by the behavior of the machine tool. In today’s industrial environment, the correction of thermal errors is usually based on simple regression appr…
METHODS FOR DETERMINING THERMAL ERRORS IN MACHINE TOOLS BY THERMO-ELASTIC SIMULATION IN CONNECTION WITH THERMAL MEASUREMENT IN A CLIMATE CHAMBER Open
Thermo-elastic deformation of the machine tool due to thermal expansion of machine components presents one of the biggest challenges in maintaining accuracy and product quality. The operation of the machine inevitably leads to waste heat d…
Split CFD-simulation approach for effective quantification of mixed convective heat transfer coefficients on complex machine tool models Open
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Hybrid Thermal Error Compensation Combining Integrated Deformation Sensor and Regression Analysis Based Models for Complex Machine Tool Designs Open
Thermal errors remain the dominant sources of positioning inaccuracies in machine tools. Various methods of reducing them have already been developed, ranging from cooling and air conditioning strategies, thermally optimized machine tool d…
Smart Pressure Film Sensor for Machine Tool Optimization and Characterization of the Dynamic Pressure Field on Machine Surfaces Open
Knowledge of thermal interactions with the environment is essential for improving the performance of machine tools. Therefore, it is necessary to detect and quantify the convective heat flows at machine tool surfaces, that occur in the wor…
SIMULATION-BASED INVESTIGATION FOR HEAT TRANSFER BEHAVIOR OF STEEL REINFORCEMENTS IN CONCRETE MACHINE FRAMES AND THEIR THERMAL EFFECTS Open
The determination of the thermal-elastic behavior is one of the main aspects in the design phase of new machine frames. Prototypically simulation models are used for preliminary investigations, which are based on finite element approaches …