レーザフォーミング加工に関する基礎的研究 (第2報)

フォーマット:

論文

責任表示:

千徳, 英介 ; 上田, 隆司 ; 山田, 啓司 ; 細川, 晃

言語:

日本語

出版情報:

精密工学会 = The Japan Society for Precision Engineering, 2005-01-01

著者名:

• 千徳, 英介
• 上田, 隆司
• 山田, 啓司
• 細川, 晃

掲載情報:

Journal of the Japan Society for Precision Engineering, Contributed Papers = 精密工学会誌論文集

ISSN:

1348-8724      

巻:

71

通号:

4

開始ページ:

481

終了ページ:

485

バージョン:

publisher

概要:

Laser forming of a sheet metal is the bending process caused by the thermal stresses which is produced in the sheet by laser irradiation. Therefore, the temperature distribution in the sheet irradiated with laser beam is one of important fa … ctors to determine the bending angle of the sheet. In this study, the influence of temperature distribution and the experimental conditions like the diameter of laser beam and the thickness of a sheet on the bending angle is investigated experimentally. The temperatures of a surface irradiated with CO2 laser and its opposite surface are measured using an infrared radiation pyrometer with an optical fiber. As a result, the bending angle is directly proportional to the temperature Ts at the sheet surface irradiated with laser beam and the beam diameter D, and inversely proportional to the thickness h of the sheet. A parameter indicated by D1.41Ts1.5/h1.7 has high correlation with the all bending angles obtained under various experimental conditions. 様々な加工条件で板材のフォーミング加工を行い, 同時にレーザ照射部表面および裏面温度を測定し, 加工条件と照射温度の変形角への影響を調べた. その結果, 変形角はレーザビーム径の1.4乗に比例し, 照射温度の1.5乗に比例し, 加工物の板厚の1.7乗に反比例しており, これらの結果より導出した式は定性的に加工条件の変形角への影響を良く表している. 続きを見る

URL:

http://hdl.handle.net/2297/38634