Substructure Coupling of Microend Mills to Aid in the Suppression of Chatter  

Oleh:

Mascardelli, Brock A. ; Park, Simon S. ; Freiheit, Theodor

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Manufacturing Science and Engineering vol. 130 no. 1 (Feb. 2008), page 1-12.
Topik: Receptance Coupling; Microchatter; Microend Mill

Ketersediaan

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

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Isi artikel

Microend Milling offers the ability to machine microparts of complex geometry relatively quickly when compared with photolithographic techniques. The key to good surface quality is the menimization of tool chatter. This requires an understanding of the milling tool and the milling structure system dynamics. However, impact hammer testing cannot be applied directly to the prediction of tool tip dynamics because microend mills are fragile, with tip diameters as small as 10 um. This paper investigates the application of the receptance coupling technique to mathematically couple the spindle/micromachine and atbitrary microtools with different geometries. The frequency response functions (FRFs) of the spindle/micromachine tools are measured experimentally through impact hammer testing, utilizing laser displacement and capacitance sensors. The dynamics of an arbitrary tool substructure are determined through modal finite element analyses. Joint rotational dynamics are indirectly determined through experimentally measuring the FRFs of gauge tools. From the FRFs, chatter conditions are predicted and verified through micromilling experiments.

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