Deburring microparts using a magnetorheological fluid

Kyung In Jang, Doo Yeon Kim, Sangjin Maeng, Wonkyun Lee, Jungjin Han, Jongwon Seok, Tae Jin Je, Shinill Kang, Byung Kwon Min

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

It is difficult to deburr a micro-machined surface because the micro-features are easily damaged during the deburring processes. This paper proposes a new deburring process utilizing a magnetorheological fluid and applies it to the production of micromolds. A magnetorheological fluid is a functional fluid with a variable yield stress that is controlled by an external magnetic field. The proposed process utilizes two material removal mechanisms induced by the magnetorheological fluid flow. Extensive yielding of material is effective for deburring sheet-shaped burrs, and abrasive wear is effective for deburring protrusion-shaped burrs. A process model was developed to describe the effectiveness of each mechanism for specific burr geometries. The performance of the proposed method was verified experimentally. Metal burrs with a height of 200 μm and thickness of 1 μm were removed successfully with extensive yielding and abrasive wear. Burrs shorter than a few micrometers could be removed only by abrasive wear. The material removal behaviors of sheet-shaped and protrusion shaped burrs matched the proposed process model well.

Original languageEnglish
Pages (from-to)170-175
Number of pages6
JournalInternational Journal of Machine Tools and Manufacture
Volume53
Issue number1
DOIs
Publication statusPublished - 2012 Feb

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MEST) (No. 2011-0018086 ).

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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