のこぎり歯形形状を有する表面によるマイクロパーツの輸送 : 計測データに基づく接触モデルの定式化と凝着力の解析(機械力学,計測,自動制御)

概要

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We have previously showed that microparts can be fed along a sawtooth surface using simple planar symmetric vibration. Microparts move forward because they adhere to the sawtooth surface asymmetrically. We studied also the effects of sawtooth pitch and vibration frequency on the movement of 2012-type capacitors (size: 2.0×1.2×0.6mm, weight: 7.5mg). In the present work, we studied tribological characteristics of smaller 0603-type capacitors (size: 0.6×0.3×0.3mm, weight: 0.3mg). We analysed the contact between a micropart and a sawtooth surface based on measurements. A microscope was used to obtaine precise surface models of 0603-type capacitor and feeder surface. A three dimentional model of each surface was synthesized from pictures at various values of focus height, and obtained a section model along vertical plane. Section models of both surfaces were approximated by linear polynominals, and then contact of both section models was analysed to examine adhesion. A statics including adhesion was defined and identified by friction angle measurement experiments.
一般社団法人日本機械学会の論文
2009-04-25