3 0 0 0 OA 切削加工における騒音の解析 (第1報)
- 著者
- 一宮 亮一 知久 一佳 相地 誠
- 出版者
- 公益社団法人 精密工学会
- 雑誌
- 精密機械 (ISSN:03743543)
- 巻号頁・発行日
- vol.49, no.3, pp.377-382, 1983-03-05 (Released:2009-07-23)
- 参考文献数
- 8
The purpose of this paper is to clarify the characteristics of cutting noise and noise sources in metal cutting with a single point cutting tool. When a cylindrical workpiece is machined with a lathe, the sound pressure level and frequency analyses were measured. Effects of overhang length of the cutting tool, cutting condition, tool wear, work material and shape of the workpiece on thecutting noise analyses were experimentally made clear. Two prominent peaks of the sound pressure level were observed from the frequency analyses of cutting noise at the frequencies of around 4 000 Hz and 10 000 Hz. The former peak is caused by the vibration of the cutting tool system and the sound pressure level at the frequency increased with the increase of tool wear. The latter peak is affected by the workpiece system and the frequency of the peak varied with the decrease of wall thickness in pipe cutting with a lathe.
1 0 0 0 OA SOI技術による高レート実験用薄型ピクセル検出器の研究
本研究では、Silicon-On-Insulator (SOI)技術を用い、50 ミクロン程度まで薄くでき、100 万以上の画素数を持つピクセル放射線検出器(SOIPIX)を開発した。またこの検出器を用いて、実際に加速器ビームを照射し、数ミクロンオーダの位置精度が得られる事を実証した。さらに、荷電粒子やガンマ線を用いた放射線耐性試験を行い詳細なデータを得ると共に、シミュレーションによりそのメカニズムを解明し、放射線耐性の向上の為にプロセスの改良を行った。