Towards the Prediction of Compliance Influences on Shape Deviations in Internal Traverse Grinding

Schmidt, N.1, a; Tsagkir Dereli, T.1, b; Furlan, T.2, c; Holtermann, R.2, d; Biermann, D.1, e; Menzel, A.2, f; Menzel, A.3, g

1)
Institut für Spanende Fertigung, Technische Universität Dortmund, Baroper Str. 303, 44227 Dortmund
2)
Institut für Mechanik, Technische Universität Dortmund, Leonhard-Euler-Str. 5, 44227 Dortmund
3)
Division of Solid Mechanics, Lund University, P.O. Box 118, SE-22100 Lund, Schweden

a) nils.schmidt@tu-dortmund.de; b) tountzer.tsagkirdereli@tu-dortmund.de; c) tim.furlan@tu-dortmund.de; d) raphael.holtermann@tu-dortmund.de; e) dirk.biermann@tu-dortmund.de; f) andreas.menzel@tu-dortmund.de; g) andreas.menzel@solid.lth.se

Kurzfassung

Internal traverse grinding (ITG) with electroplated cBN tools is a highly efficient process for machining of bores. Profiled tools allow for high stock removal and good surface quality in a single axial stroke. However, process control is difficult. Especially shape deviations of machined workpieces are influenced by spindle compliances. Simulation-based solutions to predict and compensate form errors currently do not incorporate this aspect. To model the spindle compliance, deformations are measured using eddy current sensors in combination with piezoelectric force measuring components. A simplified substitute model is developed, which represents the spindle deflection as a function of the process normal force, and grinding investigations with in-process force measurements have been performed. By incorporating the measured forces and the compliance model into an existing simulation system, the influence on the resulting shape of the bore can be predicted in good accordance with the grinding investigations.

Veröffentlichung

In: Production at the leading edge of technology - Proceedings of the 10th Congress of the German Academic Association for Production Technology (WGP), 23.9.-24.9. 2019, Dresden, Springer Vieweg, ISBN 978-3-662-62137-0, S. 304-314, doi: 10.1007/978-3-662-62138-7_31