RECURSIVE DEFINING OF FORCE COEFFICIENTS IN MILLING PROCESS WITH ACCELEROMETER

Altun B., Çalışkan H., Özşahin O.

UMTIK 2022, Nevşehir, Turkey, 31 August - 03 September 2022, pp.259-273

  • Publication Type: Conference Paper / Full Text
  • City: Nevşehir
  • Country: Turkey
  • Page Numbers: pp.259-273
  • Middle East Technical University Affiliated: Yes

Abstract

Force coefficients are required for mechanistic force calculations in machining operations. The mainstream method of identification of force coefficients relies on dynamometers. However, using dynamometers is not necessarily applicable. This paper offers a method of force coefficients identification without force measurement. A specially designed workpiece is milled. Its acceleration is utilized together with FRFs obtained on the same milling machine that the acceleration is measured. Force estimation is performed with acceleration data and FRF. Force model is curve-fit with recursive least squares method into force estimation in order to find force coefficients.