Dynamic substructuring in metal cutting machine chatter
Paper i proceeding, 2010

In metal cutting, spindle speed optimization for process stability is one example of action that may reduce production time and increase process reliability. For process stability, it is crucial to avoid regenerative vibrations and thereby enable larger cutting depth, with higher material removal rate as benefit. A spindle speed optimization is usually based on the machine tool and cutting tool assembly’s frequency response at the tool-tip. This is normally obtained by dynamic testing of the full assembly. In this paper we use a receptance coupling technique to reduce testing time by synthesizing the frequency response displacement function of the system. The method utilizes test data of the machine tool with an inserted blank tool together with a finite element representation of the real cutting tool. The coupling is made via a state space coupling technique. Comparisons are made with data from full system tests and a stability prediction is demonstrated.

Författare

Anders Liljerehn

Chalmers, Tillämpad mekanik, Dynamik

Anders Johansson

Chalmers, Tillämpad mekanik, Dynamik

Thomas Abrahamsson

Chalmers, Tillämpad mekanik, Dynamik

Proceedings of ISMA2010 International Conference on Noise and Vibration Engineering Including USD2010, Leuven, 20-22 September 2010

Ämneskategorier

Maskinteknik

Beräkningsmatematik

Bearbetnings-, yt- och fogningsteknik

ISBN

9789073802872