An Acoustic Emission-Based Method for Determining Contact Between a Tool and Workpiece at the Microscale  

Oleh:

Bourne, Keith A. ; Jun, Martin B. G. ; Kapoor, Shiv G. ; DeVor, Richard E.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Manufacturing Science and Engineering vol. 130 no. 3 (Jun. 2008), page 031101.
Topik: Acoustic Emission-Based Method; The Microscale; Detection System; Workpiece Surface

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ93.11 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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An acoustic emission-based touch-off detection system has been developed to determine contact between a rotating microtool and a workpiece surface with micron-level accuracy. The system has been implemented on an existing three-axis microscale machine tool. The system has been tested with microendmills as small as 50 (miu)m in diameter and microdrills as small as 254 (miu)m in diameter. The accuracy of the system has been found to depend on tool geometry and workpiece surface characteristics and is generally on the order of 1 (miu)m. An analytical model has been constructed to predict touch-off detection error. The calibrated model has been shown to predict surface overshoot and undershoot trends quite well. Simulations have shown that touch-off error is dominated by part suface roughness.

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