JPS61212493A - Welding quality detecting device - Google Patents
Welding quality detecting deviceInfo
- Publication number
- JPS61212493A JPS61212493A JP60052465A JP5246585A JPS61212493A JP S61212493 A JPS61212493 A JP S61212493A JP 60052465 A JP60052465 A JP 60052465A JP 5246585 A JP5246585 A JP 5246585A JP S61212493 A JPS61212493 A JP S61212493A
- Authority
- JP
- Japan
- Prior art keywords
- height
- welding
- bead
- uranami
- inspection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Laser Beam Processing (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、レーザ加工装置における溶接品質検査装置
Ｋ１１Ａするものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a welding quality inspection device K11A in a laser processing device.
第６図は例えば特公昭５６−２２６３９号公報に開示さ
れた従来の溶接品質検査方法を示す外観図である。図に
おいて、（１）はレーザビームで、加工レンズ（２）に
より集光されて被加工物（３）に照射される。FIG. 6 is an external view showing a conventional welding quality inspection method disclosed in, for example, Japanese Patent Publication No. 56-22639. In the figure, (1) is a laser beam, which is focused by a processing lens (2) and irradiated onto a workpiece (3).
（１ヤは加工時に生じる被加工物の蒸発および溶融した
飛散物、（至）はフィルター（ロ）を取付けたフォトダ
イオード等の光学検出器である。(1) is the evaporation and melted debris of the workpiece generated during processing; (2) is an optical detector such as a photodiode equipped with a filter (2).
次に動作について説明するうレーザビーム（１）は加工
レンズ（２）によって集光され、被加工物（３）に照射
されて切断、溶接等のレーザ加工が行われる。Next, the operation will be explained. A laser beam (1) is focused by a processing lens (2), and is irradiated onto a workpiece (3) to perform laser processing such as cutting and welding.
被加工物（３）の飛散物α力はレーザビーム（１）によ
って高温に加熱されているから、飛散時に光を出力する
。レーザ加工において加工量が最適な場合と、この最適
加工量から外れた場合の蒸発物および溶融物の発生量に
は相違があり、これに関連して飛散物（１１）の加熱に
よる発光時間に大きな差がある。Since the scattered particles α of the workpiece (3) are heated to a high temperature by the laser beam (1), they output light when scattered. In laser processing, there is a difference in the amount of evaporated matter and molten material generated when the processing amount is optimal and when it deviates from this optimal processing amount, and in relation to this, there is a difference in the light emission time due to the heating of the flying object (11). There is a big difference.
この飛散物ａ力の加熱による発光時間を、レーザビーム
（１）外の倒置よりフィルター（ロ）を取付けたフォト
ダイオード等の光学検出器ａ１によって検出することに
より、レーザ加工が最適であるかどうかを検出する。By detecting the light emission time due to the heating of this scattered object a force with an optical detector a1 such as a photodiode installed with a filter (b) placed upside down outside the laser beam (1), it is possible to determine whether laser processing is optimal. Detect.
従来の溶接品質検出装置は以上のように構成されている
ので、溶接等のレーザ加工品質を被加工物から飛散する
蒸発物や溶融物の発生する光によって検出しようとして
いるが、飛散物は溶接中のアシストガスの流れ等によっ
て乱されるため、光の検出に安定性がなく、溶接品質の
検査に信頼性がないという問題があった。Conventional welding quality detection devices are configured as described above, and attempt to detect the quality of laser processing such as welding using the light generated by evaporated matter or molten matter scattered from the workpiece, but the scattered matter is Since the light is disturbed by the flow of assist gas inside, there is a problem in that the detection of light is unstable and the inspection of welding quality is unreliable.
この発明は、上記のような問題点を解消するためになさ
れたもので、溶接中のアシストガスの流れ等に影響を受
けない、信頼性の高い溶接品質検出装置を得ることを目
的とする。This invention was made to solve the above-mentioned problems, and aims to provide a highly reliable welding quality detection device that is not affected by the flow of assist gas during welding.
この発明に係る溶接品質検出装置は、レーザ加工装置に
突合せ裏波溶接における裏波ビード高さを検出する非接
触式変位計を取付けたものである６゜〔作用〕
この発明における溶接品質検出装置は、突合せ裏波溶接
における裏波ビードの高さを良好な溶接の裏ビード高さ
と比較して、異常があるかどうかを非接触式変位計で測
定して、溶接品質を判定する。The welding quality detection device according to the present invention is a laser processing device equipped with a non-contact displacement meter for detecting the height of the uranami bead in butt welding. The welding quality is determined by comparing the height of the uranami bead in butt uranami welding with the height of the uranami bead in a good weld, and measuring whether there is any abnormality using a non-contact displacement meter.
〔発明の実施例〕
以下この発明の一実施例を図について説明するっ第１図
はこの発明による実施例の正面図、第２図はその側断面
図である。図において、（１）はレーザビームであり、
加工レンズ（２）Ｋよって集光される。[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a front view of the embodiment according to the invention, and Fig. 2 is a side sectional view thereof. In the figure, (1) is a laser beam,
The light is focused by the processing lens (2)K.
（３ａ）、（３ｂ）は突合せ裏波溶接をしようとする被
加工物である。（５）、（６）は被加工物を固定するク
ランプ、（７）は電動機（９）およびボールネジα１に
よって水平方向に移動できる車輪のついた非接触式変位
計であり、固定案内板（８）によって保持されている。(3a) and (3b) are workpieces to which butt butt welding is to be performed. (5) and (6) are clamps that fix the workpiece, (7) is a non-contact displacement meter with wheels that can be moved horizontally by an electric motor (9) and a ball screw α1, and a fixed guide plate (8). ) is maintained by.
（ｌηはレーザ光源、（２）はレンズ、（２）はレーザ
光源よりのレーザ光α→が裏ビード（４ｃ）に反射し、
レンズ（２）を舒由して結像する結像面である。(lη is a laser light source, (2) is a lens, (2) is a laser beam α → from the laser light source is reflected on the back bead (4c),
This is the imaging surface on which the lens (2) is rotated to form an image.
次に動作について説明する。図示のない発振器より取り
出されたレーザビーム（１）は、レンズ（２）により集
光されて被加工物（３ａ）と（３ｂ）の突合せ線上に位
置あわせされる。被加工物（３ａ）と（６ｂ）の突合せ
個所は集光されたレーザビームが照射されることにより
溶接される。その際、被加工物（３ａ）と（３ｂ）は突
合せ裏波溶接を実施しているので、溶接肉は表ビード（
４ａ）の肉盛個所、母材部（４ｂ）、裏ビード（４Ｃ）
の肉盛個所とから構成されている。この突合せ裏波溶接
が完全に実施されている度合は、裏ビード（４ｃ）の肉
感個所の高さが一定であるかどうかを検査すれば判定で
きる。Next, the operation will be explained. A laser beam (1) extracted from an oscillator (not shown) is focused by a lens (2) and positioned on the line of abutment between the workpieces (3a) and (3b). The abutting portions of the workpieces (3a) and (6b) are welded by being irradiated with a focused laser beam. At that time, since the workpieces (3a) and (3b) are butt welded, the weld meat is on the surface bead (
Overlay part of 4a), base material part (4b), back bead (4C)
It consists of overlay parts. The degree to which this butt back welding has been completed can be determined by checking whether the height of the fleshy part of the back bead (4c) is constant.
そこで、この判定を行うＫは、非接触式の変位針（７）
を溶接完了後に娯ビード（４Ｃ）の高さを測定するため
に走査させる。この実施例は非接触式変位計の一例とし
てレーザ光による三角測量法を示しておａ、レーザ光源
α凄によりレーザビーム（１４ａ）を溶接肉の裏ピード
（４ｃ）に照射し、その反射レーザビーム（１４ｂ）を
レンズ（２）を通して結像面（至）に投影し、像の位置
により裏ビード（４ｃ）の肉盛高さを検出する。Therefore, K that performs this judgment is a non-contact type displacement needle (7).
is scanned to measure the height of the bead (4C) after welding is completed. This embodiment shows a triangulation method using a laser beam as an example of a non-contact displacement meter. The beam (14b) is projected onto the imaging plane (to) through the lens (2), and the build-up height of the back bead (4c) is detected based on the position of the image.
以上の操作によって、非接触式検出器（７）で裏ビード
（４ｃ）の高さを検出した結果、この裏ビードの高さが
良品の被加工物の裏ビード高さと相違が生じた場合、溶
接不良という信号を出して、溶接品質の検査をする。そ
の際、非接触式変位計（７）は被加工物（３）の裏ビー
ド高さを板の幅方向全域にわたって測定するために電動
機（９）、ボールネジ（至）によって水平方向に移動す
るようになっている。As a result of detecting the height of the back bead (4c) with the non-contact detector (7) through the above operations, if the height of this back bead differs from the back bead height of a good workpiece, It outputs a signal indicating welding defects and inspects welding quality. At this time, the non-contact displacement meter (7) is moved horizontally by an electric motor (9) and a ball screw (toward) in order to measure the back bead height of the workpiece (3) over the entire width direction of the plate. It has become.
以上のように、この発明によれば溶接品質を検出するの
にレーザ光による非接触式変位計を使用するように構成
したので、溶接不良の検出に対して信頼性の高いものが
得られる。As described above, according to the present invention, since a non-contact displacement meter using a laser beam is used to detect welding quality, a highly reliable detection of welding defects can be obtained.
第１図はこの発明の一実施例による溶接品質検出装置を
示す正断面図、第２図は第１図の側断面図、第３図は従
来の溶接品質検出方法を示す外観図である。
（１）はレーザビーム、（３ａ）、（３ｂ）は被加工物
、（４Ｃ）は裏波ビード、（７）は非接触式変位計。
なお図中、同一符号は同一、又は相当部分を示す。
代理人 弁理士 木 村 三 朗
第２図FIG. 1 is a front sectional view showing a welding quality detection device according to an embodiment of the present invention, FIG. 2 is a side sectional view of FIG. 1, and FIG. 3 is an external view showing a conventional welding quality detection method. (1) is the laser beam, (3a) and (3b) are the workpieces, (4C) is the Uranami bead, and (7) is the non-contact displacement meter. In the figures, the same reference numerals indicate the same or equivalent parts. Agent Patent Attorney Sanro Kimura Figure 2
Claims (1)
接部の裏波ビード高さを非接触式変位計を使用して測定
し、上記溶接部の検査を行うことを特徴とする溶接品質
検出装置。A welding quality detection device characterized in that in butt uranami welding using a laser processing device, the height of the uranami bead of the welded portion is measured using a non-contact displacement meter, and the welded portion is inspected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60052465A JPS61212493A (en) | 1985-03-18 | 1985-03-18 | Welding quality detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60052465A JPS61212493A (en) | 1985-03-18 | 1985-03-18 | Welding quality detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61212493A true JPS61212493A (en) | 1986-09-20 |
Family
ID=12915464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60052465A Pending JPS61212493A (en) | 1985-03-18 | 1985-03-18 | Welding quality detecting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61212493A (en) |
-
1985
- 1985-03-18 JP JP60052465A patent/JPS61212493A/en active Pending
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