Oscillator-based approach for modeling process dynamics in NC milling with position- and time-dependent modal parameters

Biermann, D.1, a; Surmann, T.1, b; Kersting, P.1, c

1)
Institut für Spanende Fertigung, Technische Universität Dortmund, Baroper Str. 303, 44227 Dortmund

a) biermann@isf.de; b) surmann@isf.de; c) petra.kersting@isf.de

Kurzfassung

Oscillator models provide an efficient approach for simulating the dynamic behaviour of the machine, tool, or workpiece. In their application, however, these models are usually limited to describing the vibration behaviour at one specific position since they do not contain any information about the structure of the machine tool or the workpiece. Additionally, the variation in time dependent parameters caused by the material removal process is not taken into account. In this paper, an adapted model, which takes the position- and time-dependent modal parameters during NC milling into account, is presented and its experimental validation with respect to the machining of thin-walled components is discussed.

Schlüsselwörter

Machine tool, Simulation, Vibration, Chatter

Veröffentlichung

Production Engineering. Research and Development, 7 (2013) 4, S. 417–422, doi: 10.1007/s11740-013-0454-6