Materials induced vibration in ultra-precision machining

Wing Bun Lee, Chi Fai Cheung, Suet To

Research output: Journal article publicationJournal articleAcademic researchpeer-review

49 Citations (Scopus)

Abstract

In this paper, the development of a microplasticity model for predicting the effect of crystallographic orientation on the shear angle and the chip formation, as well as on the variation of micro-cutting force are discussed. The model forms a basis for the study of material induced vibration phenomenon encountered in ultra-precision machining. Material induced vibration has its origin in the variation of micro-cutting force caused by the changing crystallography of the material substrate being cut. It is a kind of self-excited vibration which is difficult to eliminate solely by machine tool design or process control. The magnitude of such vibration inevitably affects the surface topography of the workpieces in ultra-precision machining, and this sets a limit of the performance of an ultra-precision machine. A framework of a model-based simulation system is proposed to determine quantitatively the magnitude of the vibration and its effect on the surface topography of a diamond-turned surface. Features predicted from the system are found to correlate well with experimental findings.
Original languageEnglish
Pages (from-to)318-325
Number of pages8
JournalJournal of Materials Processing Technology
Volume89-90
DOIs
Publication statusPublished - 19 May 1999

ASJC Scopus subject areas

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

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