Prediction of workpiece dynamics and its effects on chatter stability in milling

Budak E., Tunc L. T., Alan S., ÖZGÜVEN H. N.

CIRP ANNALS-MANUFACTURING TECHNOLOGY, vol.61, no.1, pp.339-342, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 61 Issue: 1
  • Publication Date: 2012
  • Doi Number: 10.1016/j.cirp.2012.03.144
  • Journal Name: CIRP ANNALS-MANUFACTURING TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.339-342
  • Keywords: Milling, Chatter, Workpiece dynamics
  • Middle East Technical University Affiliated: Yes

Abstract

The workpiece dynamics affect stability in machining of flexible parts. However, it is not a straightforward task to include it in the analysis since the workpiece dynamics continuously change due to mass removal and variation of the cutter contact. In this paper, a methodology for prediction of inprocess workpiece dynamics is presented, which is based on a structural dynamic modification using the FE model of the workpiece. The cutter location (CL) file is used to determine the removed elements at each tool location along a cycle. The proposed approach is demonstrated on example cases, and simulations are verified through experiments. (c) 2012 CIRP.