Integrated model for error attenuation in smart toolpost

Maki K. Rashid, Amer S. Al-Yahmadi

Research output: Contribution to journalArticle

Abstract

The work presents integrated model for error attenuation of smart toolpost under different design parameters. This includes a finite element modeling that allows determination of axial tool displacements (radial to the workpiece) and voltage activation using a developed fuzzy algorithm. The model examines design variables concealed by previous work using lumped mass modeling in dynamic response evaluation. Model parameters incorporate tool structural stiffness and workpiece holders, voltage activation, time delay between displacement sensing and activation voltage, structural damping, and dynamic absorber contribution to tool error attenuation. The main features of the model are the nonlinearity, the integration of the PWM technique for voltage activation with dynamic response, and the rule of dynamic absorber in tool error attenuation. Damping can help in reducing toolpost error; however, the significant improvement is noticed by implementing fuzzy algorithm for voltage activation. The FEM calculations and the fuzzy algorithm provided the linking between the estimated static and dynamic activation voltage for error attenuation.

Original languageEnglish
Pages (from-to)821-836
Number of pages16
JournalMechatronics
Volume15
Issue number7
DOIs
Publication statusPublished - Sep 2005

Keywords

  • Intelligent toolpost
  • Machining errors
  • Piezoelectric switching
  • Tool vibration
  • Vibration suppression

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering

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