TY - GEN
T1 - Integration of cutting tool dynamics with variable federate NURBS interpolators
AU - Sekar, M.
AU - Lee, Dong Mok
AU - Yang, Seung Han
PY - 2008
Y1 - 2008
N2 - A new approach is proposed in this paper to integrate NURBS interpolation with toolworkpiece dynamics. The important source of machine tool vibration namely, the regenerative chatter, is analyzed with respect to adaptive and jerk limited feedrate interpolators. The feed motion for the NURBS trajectory is characterized by a path of continuously varying curvature resulting in instantaneous variation of cutting geometries. In addition, due to adaptive interpolation of the tool path, machine stages must be commanded at every sampling interval to reach the desired position with a varying feedrate. Using the proposed approach, integrated machining dynamics of a sample NURBS curve is illustrated. The feedrate profiles of different adaptive and jerk limited interpolators are first computed and the instantaneous cutting process geometries are estimated. Numerical time domain simulations for integrated interpolation-cutting dynamics are carried out and analyzed.
AB - A new approach is proposed in this paper to integrate NURBS interpolation with toolworkpiece dynamics. The important source of machine tool vibration namely, the regenerative chatter, is analyzed with respect to adaptive and jerk limited feedrate interpolators. The feed motion for the NURBS trajectory is characterized by a path of continuously varying curvature resulting in instantaneous variation of cutting geometries. In addition, due to adaptive interpolation of the tool path, machine stages must be commanded at every sampling interval to reach the desired position with a varying feedrate. Using the proposed approach, integrated machining dynamics of a sample NURBS curve is illustrated. The feedrate profiles of different adaptive and jerk limited interpolators are first computed and the instantaneous cutting process geometries are estimated. Numerical time domain simulations for integrated interpolation-cutting dynamics are carried out and analyzed.
UR - http://www.scopus.com/inward/record.url?scp=84908353440&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84908353440
T3 - Proceedings of the 10th Anniversary International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2008
SP - 401
EP - 405
BT - Proceedings of the 10th Anniversary International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2008
A2 - Van Brussel, Hendrik
A2 - Spaan, H.
A2 - Brinksmeier, E.
A2 - Burke, T.
PB - euspen
T2 - 10th Anniversary International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2008
Y2 - 18 May 2008 through 22 May 2008
ER -