Abstract
A major percentage of the mechanical energy introduced during the grinding process is converted into heat. For this reason, the grinding process has a great influence on the thermo-elastic behaviour of the complete machine tool. This paper introduces an approach to model the energy conversion in the grinding process, taking into account grinding wheel topography. An analytical-empirical energy model for grain engagement is abstracted from the phases of chip formation when a single grain is engaged. Chip formation on a single grain was analysed using two newly developed test beds. In this approach, it was possible for the first time to identify the chip formation phases and to demonstrate their significant influence on the energy converted during grain engagement. Moreover, it was possible to derive initial characteristic parameters to model the influence of the grain shape. The Finite-Element simulation of single grain engagement makes it possible to vary the process variables in further experiments, in particular the grain shape properties, independent of one another and in a controlled manner, and to study their influence. It is the goal of ongoing studies to generalise the energy model for single grain engagement as a model for multi-grain engagement and thus the entire grinding process by means of a geometric-kinematic grain engagement model.
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Rasim, M., Klocke, F., Mattfeld, P. (2015). Energy Model for Grinding Processes. In: Großmann, K. (eds) Thermo-energetic Design of Machine Tools. Lecture Notes in Production Engineering. Springer, Cham. https://doi.org/10.1007/978-3-319-12625-8_4
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DOI: https://doi.org/10.1007/978-3-319-12625-8_4
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