JP2015188938A - レーザ溶接良否判定方法及びレーザ溶接良否判定装置 - Google Patents
レーザ溶接良否判定方法及びレーザ溶接良否判定装置 Download PDFInfo
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- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
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- B29C66/90—Measuring or controlling the joining process
- B29C66/97—Checking completion of joining or correct joining by using indications on at least one of the joined parts
- B29C66/974—Checking completion of joining or correct joining by using indications on at least one of the joined parts by checking the bead or burr form
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- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
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- B23K2103/00—Materials to be soldered, welded or cut
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- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/30—Organic material
- B23K2103/42—Plastics
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/114—Single butt joints
- B29C66/1142—Single butt to butt joints
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- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
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Abstract
【解決手段】被溶接材にレーザ光を照射することにより形成された溶融池を撮影する工程を備えたレーザ溶接良否判定方法において、撮影された溶融池の画像から、溶接方向に直交する方向の溶融池の幅を計測する工程と、計測された溶融池の幅から溶込み深さを推測する工程と、推測された溶込み深さと計測された溶融池の幅から溶接品質の良否を判定する工程とを備える。また、被溶接材にレーザ光を照射することにより溶融池を形成するレーザヘッドと、溶融池を撮影する撮影装置とを備えたレーザ溶接良否判定装置において、撮影された溶融池の画像が入力されるデータ処理装置を備え、データ処理装置は、溶融池の画像の輝度を測定する輝度測定装置と、溶接方向に直交する方向の溶融池の幅に対応する溶込み深さを記録した第一データベースと、溶融池の幅と溶込み深さとに基づく溶接品質の要否判断を記録した第二データベースとを備える。
【選択図】 図1
Description
2 レーザ光
3 コリメーションレンズ
4 ハーフミラー
5 集光レンズ
6 被溶接材
7 集光レンズ
8 カメラ(撮影装置)
9 モニタ(表示装置)
10 データ処理システム(データ処理装置)
11 角度(レーザ光軸とカメラとの角度)
12 溶接ビード
13 レーザヘッド
14 円筒状被溶接材
15 円筒状被溶接材
16 円筒状被溶接材
17 円筒状被溶接材
18 円柱状被溶接材
19 円柱状被溶接材
Claims (11)
- 被溶接材にレーザ光を照射することにより形成された溶融池を撮影する工程を備えたレーザ溶接良否判定方法において、
撮影された前記溶融池の画像から、溶接方向に直交する方向の前記溶融池の幅を計測する工程と、
計測された前記溶融池の幅から溶込み深さを推測する工程と、
推測された前記溶込み深さと計測された前記溶融池の幅から溶接品質の良否を判定する工程とを備えることを特徴とするレーザ溶接良否判定方法。 - 請求項1において、前記溶融池の幅を計測する工程は、前記被溶接材の溶融時の放射光の輝度を輝度域値とした場合に、前記溶融池の画像中で前記輝度域値以上の輝度を示す部分を溶融池として検出し、前記溶接方向に直交する方向において前記輝度域値を示す2点間の距離のうち最大のものを前記溶融池の幅として計測することを特徴とするレーザ溶接良否判定方法。
- 請求項1又は2において、前記溶込み深さを推測する工程は、あらかじめ定めたデータベースに前記溶融池の幅を照合して前記溶込み深さを推測することを特徴とするレーザ溶接良否判定方法。
- 請求項1又は2において、撮影された前記溶融池の画像から、溶接方向の前記溶融池の長さを計測する工程を更に備え、前記溶込み深さを推測する工程は、計測された前記溶融池の幅と長さから前記溶込み深さを推測することを特徴とするレーザ溶接良否判定方法。
- 請求項4において、前記溶込み深さを推測する工程は、あらかじめ定めたデータベースに前記溶融池の幅と長さを照合して前記溶込み深さを推測することを特徴とするレーザ溶接良否判定方法。
- 請求項4又は5において、前記溶接品質の良否を判定する工程は、推測された前記溶込み深さと計測された前記溶融池の幅と長さから前記溶接品質の良否を判定することを特徴とするレーザ溶接良否判定方法。
- 被溶接材にレーザ光を照射することにより形成された溶融池を撮影する工程を備えたレーザ溶接良否判定方法において、
撮影された前記溶融池の画像から、溶接方向に直交する方向の前記溶融池の幅を計測する工程と、
あらかじめ定めたデータベースの溶込み深さと計測された前記溶融池の幅から溶接品質の良否を判定する工程とを備えることを特徴とするレーザ溶接良否判定方法。 - 請求項7において、前記溶融池の幅を計測する工程は、前記被溶接材の溶融時の放射光の輝度を輝度域値とした場合に、前記溶融池の画像中で前記輝度域値以上の輝度を示す部分を溶融池として検出し、前記溶接方向に直交する方向において前記輝度域値を示す2点間の距離のうち最大のものを前記溶融池の幅として計測することを特徴とするレーザ溶接良否判定方法。
- 請求項7又は8において、撮影された前記溶融池の画像から、溶接方向の前記溶融池の長さを計測する工程を更に備え、前記溶接品質の良否を判定する工程は、あらかじめ定めたデータベースの溶込み深さと計測された前記溶融池の幅と長さから溶接品質の良否を判定することを特徴とするレーザ溶接良否判定方法。
- 被溶接材にレーザ光を照射することにより溶融池を形成するレーザヘッドと、前記溶融池を撮影する撮影装置とを備えたレーザ溶接良否判定装置において、
撮影された前記溶融池の画像が入力されるデータ処理装置を備え、
前記データ処理装置は、
前記溶融池の画像の輝度を測定する輝度測定装置と、
溶接方向に直交する方向の前記溶融池の幅に対応する溶込み深さを記録した第一データベースと、
前記溶融池の幅と前記溶込み深さとに基づく溶接品質の要否判断を記録した第二データベースとを備えることを特徴とするレーザ溶接良否判定装置。 - 被溶接材にレーザ光を照射することにより溶融池を形成するレーザヘッドと、前記溶融池を撮影する撮影装置とを備えたレーザ溶接良否判定装置において、
撮影された前記溶融池の画像が入力されるデータ処理装置を備え、
前記データ処理装置は、
前記溶融池の画像の輝度を測定する輝度測定装置と、
溶接方向に直交する方向の前記溶融池の幅に対応する溶込み深さと、前記溶融池の幅と前記溶込み深さとに基づく溶接品質の要否判断を記録したデータベースとを備えることを特徴とするレーザ溶接良否判定装置。
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US15/129,089 US20170095885A1 (en) | 2014-03-31 | 2015-02-03 | Laser Welding Quality Determination Method and Laser Welding Apparatus Equipped with Quality Determination Mechanism |
PCT/JP2015/053000 WO2015151574A1 (ja) | 2014-03-31 | 2015-02-03 | レーザ溶接良否判定方法および良否判定機構を備えるレーザ溶接装置 |
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WO2017163430A1 (ja) * | 2016-03-25 | 2017-09-28 | 技術研究組合次世代3D積層造形技術総合開発機構 | 3次元積層造形装置、3次元積層造形装置の制御方法および3次元積層造形装置の制御プログラム |
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