Sensor-less micro-tool contact detection for ultra-precision machine tools utilizing the disturbance observer technique

Yasuhiro Kakinuma, Satoko Nagakari

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

When molds for micro products are repaired, micromachining is typically required after the welding or cladding process. The contact position of the tool to the cladded material needs to be set before micromachining. However, precise setting of the tool to the workpiece is a technically difficult operation that requires manual adjustment and the introduction of external sensors. This paper proposes an observer-based automatic detection method for micro tool contact. An ultra-precision machine tool driven by a linear motor was utilized to demonstrate the effectiveness of the proposed sensor-less tool contact detection method. Experimental results showed that the observer-based tool detection method can detect submicron-level contact, which cannot be achieved manually.

Original languageEnglish
Pages (from-to)385-388
Number of pages4
JournalCIRP Annals - Manufacturing Technology
Volume66
Issue number1
DOIs
Publication statusPublished - 2017

Keywords

  • Observer
  • Tool contact detection
  • Ultra-precision

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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