JP3483860B2 - Brazing method and brazing device - Google Patents
Brazing method and brazing deviceInfo
- Publication number
- JP3483860B2 JP3483860B2 JP2001064201A JP2001064201A JP3483860B2 JP 3483860 B2 JP3483860 B2 JP 3483860B2 JP 2001064201 A JP2001064201 A JP 2001064201A JP 2001064201 A JP2001064201 A JP 2001064201A JP 3483860 B2 JP3483860 B2 JP 3483860B2
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- heating
- temperature
- joining
- change
- 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.)
- Expired - Fee Related
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Description
【０００１】[0001]
【発明の属する技術分野】この発明はろう付け方法及び
ろう付け装置に関し、特に置きろうを用いてろう付けす
るろう付け方法及びろう付け装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brazing method and a brazing apparatus, and more particularly to a brazing method and a brazing apparatus for brazing using a place braze.
【０００２】[0002]
【従来の技術】図６は従来の置きろうを用いたトーチろ
う付けの概要を示した図である。2. Description of the Related Art FIG. 6 is a diagram showing an outline of conventional torch brazing using a brazing filler metal.
【０００３】図６の（１）を参照して、大きな構造物や
非量産品のろう付けに際して、まず接合部材１１と被接
合部材１２とが重なるろう付け面の各々に、図示しない
糊状フラックスを刷毛で塗布して組立てる。そしてこれ
らの接合部分に置きろう１５を設置した後、接合部材１
１と被接合部材１２とを交互に加熱用トーチ６１ａ，加
熱用トーチ６１ｂを移動させながら加熱した後、両接合
部材のろう付け面の酸化皮膜を溶融させる。Referring to (1) of FIG. 6, when brazing a large structure or a non-mass-produced product, first, a paste-like flux (not shown) is provided on each brazing surface where the joining member 11 and the joined member 12 overlap each other. Apply with a brush and assemble. After placing the brazing filler metal 15 on these joints, the joint member 1
After heating the heating torch 61a and the heating torch 61b alternately while moving 1 and the joined member 12 alternately, the oxide film on the brazing surface of both joining members is melted.
【０００４】加熱用トーチ６１ａ，加熱用トーチ６１ｂ
の加熱によって接合部分が更に温度上昇すると、置きろ
う１５の溶融が開始する。溶融した置きろう１５は図１
６の（２）に示されているように、接合部材１１と被接
合部材１２との間隙６３にその一部が流れこみ、露出部
分にはフィレット１７が形成されてろう付け作業が完了
する。このようにして接合部材１１及び被接合部材１２
は部分的に加熱されてろう付けされていた。Heating torch 61a, heating torch 61b
When the temperature of the joint portion further rises due to the heating of, the melting of the brazing filler metal 15 starts. The molten wax 15 is shown in FIG.
As shown in (2) of 6, a part thereof flows into the gap 63 between the joining member 11 and the joined member 12, the fillet 17 is formed on the exposed portion, and the brazing work is completed. In this way, the joining member 11 and the joined member 12
Was partially heated and brazed.
【０００５】なお、状況に応じて、接合部分の周りに加
熱コイルを配置して高周波ろう付けを行う場合もある。Depending on the situation, a high-frequency brazing may be performed by disposing a heating coil around the joint.
【０００６】[0006]
【発明が解決しようとする課題】上記のようなトーチろ
う付け及び高周波ろう付けは、
必要な部分のみを加熱するので接合部材及び被接合部
材の全体の強度低下を来さない、
炉中に投入しておくろう付けに比べて設備費も大きく
なく、短時間作業のため経済性が高い、
小物部品を中心に自動化が図り易い、
等の特徴から多くの、特にアルミニュウム部品のろう付
け方法として採用されている。In the above-described torch brazing and high-frequency brazing, only the necessary portions are heated, so that the strength of the joint member and the jointed members does not deteriorate as a whole. Compared with conventional brazing, the equipment cost is not high, it is economical because it works in a short time, it is easy to automate mainly small parts, etc., and it is adopted as a brazing method for many aluminum parts in particular Has been done.
【０００７】しかしながら，特にアルミニュウムのろう
付けでは、母材の溶融温度とろう材の溶融温度とが非常
に接近していることからろう付け作業を難しいものとし
ている。すなわち、加熱の状況によって局部的に温度が
上昇し過ぎると、「火当たり」または「バーニング」と
称する母材の溶け欠陥が発生し、ろう付け不良の主要な
原因になっていた。However, particularly in brazing aluminum, the melting temperature of the base material and the melting temperature of the brazing material are very close to each other, which makes the brazing work difficult. That is, when the temperature locally rises excessively depending on the heating condition, a melting defect of the base material called "fire contact" or "burning" occurs, which is a major cause of brazing failure.
【０００８】ろう付けの温度制御の面からすると、±５
℃程度の精度に制御される炉中ろう付けに比較して、ト
ーチろう付け及び高周波ろう付けは、接合部分の温度の
ばらつきが大きくなることは避けられない。その結果、
すべてのろう材を溶融させるために局部加熱が生じやす
くなる。すなわち、トーチろう付け及び高周波ろう付け
の最大の課題は局部的な母材の溶け欠陥の解消にある。
そこで、この問題を解決するためには、ろう付けが行わ
れる接合部分の温度を局部的に正確に検知し、この検知
温度を速やかに加熱源にフィードバックすることが重要
である。From the viewpoint of brazing temperature control, ± 5
Compared with in-furnace brazing controlled to an accuracy of about ℃, torch brazing and high-frequency brazing inevitably have large variations in temperature at the joint. as a result,
Local heating is likely to occur because all the brazing material is melted. That is, the biggest problem of the torch brazing and the high frequency brazing is to eliminate the local melting defect of the base material.
Therefore, in order to solve this problem, it is important to accurately locally detect the temperature of the joint portion where the brazing is performed, and promptly feed back the detected temperature to the heating source.
【０００９】この局部温度測定法として、たとえば接触
式温度測定を採用すると、トーチろう付けでは感熱部が
トーチ炎にさらされ、また高周波ろう付けでは誘導電流
により感熱部が異常高温を示したりするために正確な温
度検知が困難である。If, for example, a contact type temperature measurement is adopted as the local temperature measuring method, the heat sensitive part is exposed to the torch flame in the torch brazing, and the heat sensitive part shows an abnormally high temperature due to the induced current in the high frequency brazing. It is difficult to detect the temperature accurately.
【００１０】そこで、非接触型の赤外線放射型温度計に
よる測定を採用すると、接合部分の表面光沢が加工履歴
等により微妙に変化し、ろう付けを行なう高温度におい
ても赤外線放射量が変化するためやはり正確な温度測定
は困難である。Therefore, if the measurement by a non-contact type infrared radiation type thermometer is adopted, the surface gloss of the joint portion slightly changes due to the processing history and the like, and the infrared radiation amount also changes at the high temperature for brazing. After all, accurate temperature measurement is difficult.
【００１１】この発明は上記のような課題を解決するた
めになされたもので、置きろうを使用する接合部分の温
度変化を正確に把握して、高品質なろう付けを可能とす
るろう付け方法及びろう付け装置を提供することを目的
とする。The present invention has been made in order to solve the above problems, and it is a brazing method that enables high-quality brazing by accurately grasping the temperature change of the joining portion using the brazing filler metal. And a brazing device.
【課題を解決するための手段】上記の目的を達成するた
めに、請求項１記載の発明は、接合部材と被接合部材と
の接合部分を置きろうを用いてろう付けするろう付け方
法であって、置きろうの形状を認識しつつ、接合部分を
加熱手段で加熱し、置きろうの形状の変化に応答して、
接合部分が所定温度以上にならないように加熱手段を制
御するものである。In order to achieve the above-mentioned object, the invention according to claim 1 is a brazing method for brazing a joining portion between a joining member and a member to be joined by using brazing. , While recognizing the shape of the brazing filler metal, heating the joint part with a heating means and responding to the change in the shape of the brazing filler metal,
The heating means is controlled so that the joint portion does not reach a predetermined temperature or higher.
【００１２】このように構成すると，置きろうの形状変
化に応じて接合部分の温度の上昇が制御される。According to this structure, the temperature rise of the joint portion is controlled according to the change in the shape of the brazing filler metal.
【００１３】請求項２記載の発明は、接合部材と被接合
部材との接合部分を置きろうを用いてろう付けするろう
付け装置であって、置きろうの形状を撮像する撮像手段
と、接合部分を加熱する加熱手段と、撮像された置きろ
うの形状の変化を判別し、判別された変化に応答して、
接合部分が所定温度以上とならないように加熱手段を制
御する制御手段とを備えたものである。According to a second aspect of the present invention, there is provided a brazing device for brazing a joining portion between a joining member and a member to be joined by using a placing braze, and an imaging means for taking an image of the shape of the placing braze, and the joining portion. The heating means for heating the and the change in the shape of the imaged placement wax, and in response to the determined change,
And a control means for controlling the heating means so that the temperature of the joint portion does not exceed a predetermined temperature.
【００１４】このように構成すると、置きろうの形状変
化に応じて接合部分の温度の上昇が制御される。According to this structure, the temperature rise of the joint portion is controlled according to the change in the shape of the brazing filler metal.
【００１５】請求項３記載の発明は、請求項２記載の発
明の構成において、加熱手段は流量制御器によって各々
の流量及び供給時間が制御される可燃性ガス及び支燃性
ガスの混合ガスを燃焼して加熱するバーナーを含み、制
御手段は流量制御器を制御するものである。According to a third aspect of the present invention, in the configuration of the second aspect of the invention, the heating means uses a mixed gas of a combustible gas and a combustion-supporting gas whose flow rate and supply time are controlled by a flow rate controller. The control means includes a burner that burns and heats, and controls the flow rate controller.
【００１６】このように構成すると、流量制御器によっ
てバーナーによる加熱程度が制御される。According to this structure, the degree of heating by the burner is controlled by the flow rate controller.
【００１７】請求項４記載の発明は、請求項２記載の発
明の構成において、加熱手段は高周波発振器から高周波
電流が供給される加熱コイルを含み、制御部は高周波発
振器を制御するものである。According to a fourth aspect of the present invention, in the configuration of the second aspect of the invention, the heating means includes a heating coil to which a high frequency current is supplied from the high frequency oscillator, and the control unit controls the high frequency oscillator.
【００１８】このように構成すると、高周波発振器によ
って加熱コイルによる加熱程度が制御される。With this structure, the high-frequency oscillator controls the degree of heating by the heating coil.
【００１９】請求項５記載の発明は、請求項２記載の発
明の構成において、加熱手段は、その位置が位置制御器
によって制御される設置台に取り付けられるバーナーを
含み、制御手段は位置制御器を制御するものである。According to a fifth aspect of the present invention, in the configuration of the second aspect of the invention, the heating means includes a burner attached to an installation table whose position is controlled by the position controller, and the control means is the position controller. Is to control.
【００２０】このように構成すると、バーナー位置の変
化によって接合部分に加わる熱量が変化する。According to this structure, the amount of heat applied to the joint changes depending on the change in the burner position.
【００２１】請求項６記載の発明は、請求項２から請求
項５のいずれかに記載の発明の構成において、撮像手段
はＣＣＤカメラを含み、制御手段は撮像された置きろう
の外郭線の変化を判別するものである。According to a sixth aspect of the present invention, in the structure of any of the second to fifth aspects, the image pickup means includes a CCD camera, and the control means changes the outline of the imaged placement wax. Is to determine.
【００２２】このように構成すると、置きろうの形状変
化はその外郭線の変化となって表れる。With this structure, the shape change of the placement wax appears as a change of the outer contour line.
【００２３】[0023]
【発明の効果】以上説明したように、請求項１記載の発
明は、置きろうの形状変化に応じて接合部分の温度の上
昇が制御されるので、ろう付け環境等にかかわらず、接
合部分の局部過熱を生ずるおそれはなく安定したろう付
けが可能となる。As described above, according to the first aspect of the present invention, the rise in the temperature of the joint portion is controlled according to the change in the shape of the brazing filler metal. Stable brazing is possible without the risk of local overheating.
【００２４】請求項２記載の発明は、置きろうの形状変
化に応じて接合部分の温度の上昇が制御されるので、ろ
う付け環境等にかかわらず、接合部分の局部過熱を生ず
るおそれはなく安定したろう付けが可能となる。According to the second aspect of the present invention, the rise in the temperature of the joint portion is controlled according to the change in the shape of the brazing filler metal. Therefore, regardless of the brazing environment and the like, there is no risk of local overheating of the joint portion and the temperature is stable. Brazing is possible.
【００２５】請求項３記載の発明は、請求項２記載の発
明の効果に加えて、バーナーによる加熱程度が制御され
るので、接合部分の温度上昇が確実に制御され、使い勝
手がよい。In addition to the effect of the invention described in claim 2, the invention according to claim 3 controls the degree of heating by the burner, so that the temperature rise of the joint portion can be reliably controlled and the usability is good.
【００２６】請求項４記載の発明は、請求項２記載の発
明の効果に加えて、加熱コイルによる加熱程度が制御さ
れ、接合部分の温度上昇が確実に制御されるので使い勝
手がよい。In addition to the effect of the invention as set forth in claim 2, the invention as set forth in claim 4 is convenient because the degree of heating by the heating coil is controlled and the temperature rise of the joint portion is surely controlled.
【００２７】請求項５記載の発明は、請求項２記載の発
明の効果に加えて、接合部分に加わる熱量が変化するの
で、接合部分の温度上昇が制御される。According to the invention of claim 5, in addition to the effect of the invention of claim 2, the amount of heat applied to the joint changes, so that the temperature rise of the joint is controlled.
【００２８】請求項６記載の発明は、請求項２から請求
項５のいずれかに記載の発明の効果に加えて、確実に置
きろうの変化を判別できるので、装置の信頼性が向上す
る。According to the invention of claim 6, in addition to the effect of the invention of any one of claims 2 to 5, since the change of the braze to be placed can be surely discriminated, the reliability of the apparatus is improved.
【００２９】[0029]
【発明の実施の形態】図１はこの発明の第１の実施の形
態によるろう付け装置の概略構成を示したブロック図で
ある。1 is a block diagram showing a schematic configuration of a brazing apparatus according to a first embodiment of the present invention.
【００３０】図を参照して、ろう付け装置１３は被ろう
付け物を加熱するためのバーナー１９と、バーナー１９
が設置されその位置を自在に調整するための設置台２０
と、設置台２０によるバーナー１９の位置制御を行うた
めの位置制御器２８と、バーナー１９に供給するガス量
を制御するための流量制御器２４と、被ろう付け物に設
置された置きろう１５の形状変化を撮像するための撮像
カメラ３０と、撮像カメラ３０から出力された撮像デー
タに基づいて、流量制御器２４及び位置制御器２８又は
流量制御器２４若しくは位置制御器２８を制御するため
の制御部３３とから構成される。Referring to the drawings, the brazing apparatus 13 includes a burner 19 for heating an object to be brazed, and a burner 19
An installation stand 20 for installing and adjusting the position freely
A position controller 28 for controlling the position of the burner 19 by the installation table 20, a flow rate controller 24 for controlling the amount of gas supplied to the burner 19, and a placement braze 15 installed on the object to be brazed. For controlling the flow rate controller 24 and the position controller 28, or the flow rate controller 24 or the position controller 28 based on the imaging data output from the imaging camera 30. It is composed of a control unit 33.
【００３１】この実施の形態においては、被ろう付け物
として、接合部材１１と被接合部材１２とが重なるろう
付け面の各々に糊状フラックスを塗布して組立て、その
接合部分にリング状の置きろう１５を設置したものを対
象としている。撮像カメラ３０はこの置きろう１５の形
状を撮像する位置に調整されて設置されている。In this embodiment, as a material to be brazed, a paste-like flux is applied to each of the brazing surfaces where the joining member 11 and the joining member 12 are overlapped to assemble, and a ring-shaped placement is made at the joining portion. It is intended for those with a wax 15 installed. The image pickup camera 30 is adjusted and installed at a position where an image of the shape of the placement wax 15 is picked up.
【００３２】流量制御器２４にはプロパン等の可燃性ガ
ス２２及び酸素よりなる支燃性ガス２３が供給されてお
り、流量制御器２４はこれらのガスの流量や供給時間を
制御部３３の制御の下で調整し、調整された可燃性ガス
２２及び支燃性ガス２３は混合器２６で混合されてバー
ナー１９に供給される。A combustible gas 22 such as propane and a combustion-supporting gas 23 made of oxygen are supplied to the flow rate controller 24. The flow rate controller 24 controls the flow rate and supply time of these gases by the control unit 33. The combustible gas 22 and the combustion-supporting gas 23, which have been adjusted under the condition, are mixed in the mixer 26 and supplied to the burner 19.
【００３３】一方、設置台２０は制御部３３の指示の下
で、位置制御器２８の制御によって矢印で示す方向、す
なわち上下あるいは前後の方向にバーナー１９の位置を
調整する。On the other hand, the installation table 20 adjusts the position of the burner 19 in the direction indicated by an arrow, that is, in the up-down direction or the front-back direction, under the control of the position controller 28 under the instruction of the control unit 33.
【００３４】図２は図１において撮像カメラ３０によっ
て撮像された置きろう１５の形状変化を示した図であ
り、図３は接合部材１１及び被接合部材１２の接合部分
の温度変化を示したグラフである。FIG. 2 is a diagram showing the shape change of the placement braze 15 imaged by the image pickup camera 30 in FIG. 1, and FIG. 3 is a graph showing the temperature change of the joining portion of the joining member 11 and the joined member 12. Is.
【００３５】これらの図を参照して、接合部材１１及び
被接合部材１２を組立てて置きろう１５を設置した後ろ
う付け作業が開始されると、制御部３３の指示によって
流量制御器２４は最大流量の可燃性ガス２２及び支燃性
ガス２３を混合器２６に供給する。バーナー１９は、混
合器２６で混合されたガスを燃焼して接合部材１１及び
被接合部材１２の接合部分を加熱する。この時バーナー
１９は、位置制御器２８の制御によって設置台２０を介
して被ろう付け物に近づくように移動する。これによっ
て接合部分、すなちわちろう付け部の温度は図３の時刻
Ｔ１までほぼ直線状に上昇する。With reference to these figures, when the brazing work is started after the joining member 11 and the joined member 12 are assembled and the brazing member 15 is installed, the flow rate controller 24 is controlled to the maximum by the instruction of the control unit 33. The combustible gas 22 and the combustion supporting gas 23 at a flow rate are supplied to the mixer 26. The burner 19 burns the gas mixed in the mixer 26 to heat the joining portion of the joining member 11 and the joined member 12. At this time, the burner 19 moves under the control of the position controller 28 so as to approach the object to be brazed through the installation table 20. As a result, the temperature of the joint portion, that is, the brazing portion, rises substantially linearly until time T 1 in FIG.
【００３６】この時撮像カメラ３０によって撮像された
画像は図２において“Ｘ”部分の映像となっている。す
なわち置きろう１５の外側の外郭線１６は円形状を有し
ている。The image picked up by the image pickup camera 30 at this time is the image of the "X" portion in FIG. That is, the outer contour line 16 outside the placement wax 15 has a circular shape.
【００３７】図３に戻って、時刻Ｔ１になるとろう付け
部の温度はろう材の固相線に相当する温度Ｐ１に到達す
る。そのため置きろう１５は外側から溶融が開始され、
その外観形状が変化を始める。そしてさらにろう付け部
の温度が上昇して時刻Ｔ２となると、ろう付け部の温度
はろう材の液相線に相当する温度Ｐ２に到達する。この
状態になると、置きろう１５はほぼ全体が溶融してその
一部は接合部材１１と被接合部材１２の隙間に流れ込
み、且つ露出部分については図２の（２）に示すような
形状の外郭線１６が形成される。Returning to FIG. 3, at time T 1 , the temperature of the brazing portion reaches the temperature P 1 corresponding to the solidus line of the brazing material. Therefore, the brazing 15 starts melting from the outside,
The appearance shape begins to change. Then, when the temperature of the brazing portion further rises to time T 2 , the temperature of the brazing portion reaches the temperature P 2 corresponding to the liquidus line of the brazing material. In this state, almost the entire brazing filler metal 15 melts and a part thereof flows into the gap between the joining member 11 and the joined member 12, and the exposed portion has an outer shape as shown in (2) of FIG. A line 16 is formed.
【００３８】この時撮像カメラ３０の撮像データは図２
の（２）に示す“Ｙ”部分の画像データとなるため、図
２の（１）に示す “Ｘ”部分の画像データと大きく異
なることになる。この置きろう１５の外郭線１６の変化
を制御部３３は判別し、所定の変化のタイミングでろう
付け部の温度がそれ以上に上昇しないように流量制御器
２４に指示信号を出力する。At this time, the image pickup data of the image pickup camera 30 is shown in FIG.
The image data of the "Y" portion shown in (2) of (2) is significantly different from the image data of the "X" portion shown in (1) of FIG. The control unit 33 discriminates the change in the outline 16 of the brazing filler metal 15 and outputs an instruction signal to the flow rate controller 24 at a predetermined change timing so that the temperature of the brazing unit does not rise any further.
【００３９】すなわち、流量制御器２４はこの制御部３
３からの信号によって可燃性ガス２２及び支燃性ガス２
３の流量を所定量以下になるように制御し、且つその状
態を維持すべき時間をタイマー等を用いて設定する。こ
のように流量制御器２４によって可燃性ガス２２及び支
燃性ガス２３の流量が制限されることにより、バーナー
１９の火力は所定量に調整される。すなわち、図３にお
いて時刻Ｔ２から時刻Ｔ３の間において、ろう付け部の
温度がろう材の液相線に相当する温度Ｐ２を維持するよ
うに加熱されることになる。この制御によって、ろう付
け部の温度が母材の溶融温度に相当する温度Ｐ３に到達
して生じる火当たりやバーニング等の母材の欠陥を引き
起こすことはない。That is, the flow rate controller 24 has the control unit 3
The flammable gas 22 and the combustion-supporting gas 2 according to the signal from the 3
The flow rate of No. 3 is controlled so as to be equal to or less than a predetermined amount, and the time for maintaining the state is set by using a timer or the like. In this way, the flow rate controller 24 limits the flow rates of the combustible gas 22 and the combustion-supporting gas 23, so that the thermal power of the burner 19 is adjusted to a predetermined amount. That is, in FIG. 3, between the time T 2 and the time T 3 , the temperature of the brazing portion is heated so as to maintain the temperature P 2 corresponding to the liquidus line of the brazing material. By this control, defects of the base material such as fire and burning that occur when the temperature of the brazing part reaches the temperature P 3 corresponding to the melting temperature of the base material are not caused.
【００４０】時刻Ｔ３となって置きろう１５が完全に溶
融して図２の（２）の状態に外郭線１６が変形したこと
を、撮像カメラ３０によって得られた撮像データで制御
部３３が確認すると、ろう付け部の温度を図のように下
げていくように流量制御器２４に対して指示信号を出力
する。これによってバーナー１９の加熱量は所定量以下
に低下するように制御されることになる。At time T 3 , the control unit 33 indicates that the contour line 16 is deformed to the state of (2) in FIG. If confirmed, an instruction signal is output to the flow rate controller 24 so as to lower the temperature of the brazing part as shown in the figure. As a result, the heating amount of the burner 19 is controlled so as to fall below a predetermined amount.
【００４１】なお、上記の説明においてはバーナー１９
の加熱量を流量制御器２４を制御することによって達成
しているが、これとは別に又はこれと共に位置制御器２
８を制御して、バーナー１９とろう付け対象物との距離
を調整することによって図３に示すろう付け部の温度を
確保するように制御してもよい。In the above description, the burner 19
The heating amount of the position controller 2 is achieved by controlling the flow rate controller 24, but separately or together therewith.
8 may be controlled to adjust the distance between the burner 19 and the object to be brazed so as to ensure the temperature of the brazing part shown in FIG.
【００４２】図４はこの発明の第１の実施の形態におい
て撮像カメラ３０によって得られる撮像データの他の例
を示した図である。FIG. 4 is a diagram showing another example of image pickup data obtained by the image pickup camera 30 according to the first embodiment of the present invention.
【００４３】図を参照して、この例においてはその
（１）に示しているように、ろう付け開始の前の置きろ
う１５の上下に現れる２本の外郭線１６ａ，外郭線１６
ｂを画像データとして制御部３３に取込んでおく。そし
て、ろう付け部の温度がろう材の液相線に相当する温度
となり、置きろう１５が完全に溶融すると、置きろう１
５の外郭線１６ａ，外郭線１６ｂは図４の（２）に示す
ようにほとんど認識できなくなるように変化する。従っ
てこの状態を撮像カメラ３０が撮像データとして制御部
３３に出力した段階でこれを置きろう１５の形状変化と
してみなし、バーナー１９の加熱量、加熱位置等を制御
すれば、母材を溶融させることなく図３に示すようなろ
う付け部の温度を同様に確保することができる。Referring to the drawing, in this example, as shown in (1), two contour lines 16a and 16 appearing above and below the brazing filler metal 15 before the start of brazing.
The image data b is stored in the control unit 33 in advance. Then, when the temperature of the brazing portion becomes a temperature corresponding to the liquidus line of the brazing material, and the placing braze 15 is completely melted, the placing braze 1
The contour lines 16a and 16b of No. 5 change so as to be almost unrecognizable as shown in (2) of FIG. Therefore, this state is regarded as a change in the shape of the brazing unit 15 when the image pickup camera 30 outputs it as image pickup data to the control unit 33, and if the heating amount of the burner 19, the heating position, etc. are controlled, the base material is melted. Similarly, the temperature of the brazing part as shown in FIG. 3 can be ensured similarly.
【００４４】図５はこの発明の第２の実施の形態による
ろう付け装置の概略構成を示したブロック図である。FIG. 5 is a block diagram showing a schematic configuration of a brazing device according to a second embodiment of the present invention.
【００４５】図を参照して、この実施の形態の特徴は、
接合部材１１及び被接合部材１２の接合部分の加熱手段
として高周波発振器３７から高周波電流が供給される加
熱コイル３６を配置することによって達成した点であ
る。そして接合部材１１及び被接合部材１２の接合部分
に設置されるリング状の置きろう１５の形状を撮像する
撮像カメラ３０は、先の実施の形態と同様に設けられて
おり、この撮像カメラ３０の撮像データは制御部３３に
入力され、制御部３３はこの撮像データの内容を判別し
て高周波発振器３７に制御信号を出力する。Referring to the drawings, the features of this embodiment are as follows.
This is achieved by arranging a heating coil 36 to which a high-frequency current is supplied from a high-frequency oscillator 37 as a heating means for the joint portion of the joint member 11 and the jointed member 12. The image pickup camera 30 that takes an image of the shape of the ring-shaped placement braze 15 that is installed at the joining portion of the joining member 11 and the joined member 12 is provided as in the previous embodiment. The image pickup data is input to the control unit 33, which determines the content of the image pickup data and outputs a control signal to the high frequency oscillator 37.
【００４６】接合部材１１及び被接合部材１２が組立て
られ置きろう１５が設置されてろう付け作業が開始され
ると、制御部３３は高周波発振器３７に指示信号を送
り、撮像カメラ３０はこの信号に応答して最大限の高周
波電流を加熱コイル３６に供給する。これによって接合
部材１１及び被接合部材１２の接合部分は加熱コイル３
６によって誘導加熱され、その温度が上昇する。When the joining member 11 and the joined member 12 are assembled and the brazing wire 15 is installed and the brazing work is started, the control unit 33 sends an instruction signal to the high frequency oscillator 37, and the imaging camera 30 receives this signal. In response, the maximum high frequency current is supplied to the heating coil 36. As a result, the joining portion of the joining member 11 and the joined member 12 is heated by the heating coil 3.
It is induction-heated by 6 and its temperature rises.
【００４７】ろう付け部の温度がろう材の固相線に相当
する温度を超えると、置きろう１５は溶融を開始しその
形状の変化が始まる。そして更に接合部分の温度が上昇
して置きろう１５の液相線に相当する温度に達すると、
置きろう１５は完全溶融してその外郭線の形状が大きく
変化する。When the temperature of the brazing portion exceeds the temperature corresponding to the solidus line of the brazing material, the brazing filler metal 15 begins to melt and its shape begins to change. When the temperature of the joint portion further rises and reaches the temperature corresponding to the liquidus of the brazing material 15,
The brazing filler metal 15 is completely melted and the shape of the outline of the brazing filler metal changes greatly.
【００４８】この変化を撮像カメラ３０からの撮像デー
タによって制御部３３が認識すると高周波発振器３７に
指示信号を送り、接合部材１１及び被接合部材１２の接
合部分がそれ以上の温度上昇とならないように加熱コイ
ル３６に対する供給電流を制限する。これによって接合
部材１１及び被接合部材１２の接合部材の温度はその溶
融温度に達することはなく、火当たりやバーニングを生
じるおそれはない。When the control section 33 recognizes this change from the image pickup data from the image pickup camera 30, it sends an instruction signal to the high-frequency oscillator 37 so that the temperature of the joining portion between the joining member 11 and the joined member 12 does not rise further. The supply current to the heating coil 36 is limited. As a result, the temperatures of the joining members of the joining member 11 and the joined member 12 do not reach the melting temperature, and there is no risk of fire or burning.
【００４９】そして置きろう１５が完全に溶融して所望
の形状のフィレットが形成されたことを撮像カメラ３０
の撮像データによって確認すると、制御部３３は高周波
発振器３７に対して更に制御信号を出力し、これによっ
て接合部材１１及び被接合部材１２の接合部分の温度は
所望の温度となるように制御されることになる。Then, it is confirmed that the placement wax 15 is completely melted and a fillet having a desired shape is formed.
When confirmed by the imaging data of No. 3, the control unit 33 further outputs a control signal to the high frequency oscillator 37, whereby the temperature of the joining portion of the joining member 11 and the joined member 12 is controlled to a desired temperature. It will be.
【００５０】尚、上記の各実施の形態では、置きろうと
してリング状のろう材を使用しているが、ろう材はこれ
以外の形状のものであってもよい。Although the ring-shaped brazing material is used as the brazing material in each of the above-described embodiments, the brazing material may have a shape other than this.
【００５１】又、上記の各実施の形態では、ろう材の外
郭線の判別の仕方を２種類提示しているが、これ以外の
判別の仕方を採用してもよい事は言うまでもない。Further, in each of the above-mentioned embodiments, two kinds of methods for discriminating the outline of the brazing material are presented, but it goes without saying that a method other than this may be adopted.
【００５２】更に、上記の各実施の形態では、ろう付け
の対象としてアルミニュウム部品を前提としているが、
これ以外の材質による部品のろう付けにも同様に適用で
きる。Furthermore, in each of the above-mentioned embodiments, aluminum parts are premised on the object of brazing.
The same applies to brazing of parts made of other materials.
【００５３】更に、上記の第１の実施の形態では、可燃
性ガス及び支燃性ガスの各々の流量を制御する流量制御
器を制御部が制御しているが、これらの混合ガスの流量
を直接制御するようにしてもよい。Further, in the above-described first embodiment, the control unit controls the flow rate controller for controlling the flow rate of each of the combustible gas and the combustion-supporting gas. You may make it control directly.
【００５４】更に、上記の第１の実施の形態では、被ろ
う付け物を加熱するバーナは１台としているが、ろう付
け対象に応じて複数のバーナを用い、これらの加熱量を
各バーナの加熱に対応する位置の置きろうの形状の変化
に基づいて個別に制御するようにすれば、より細かなろ
う付けの制御が可能となる。Further, in the first embodiment described above, the number of burners for heating the object to be brazed is one, but a plurality of burners are used in accordance with the object to be brazed, and the heating amount of each burner is adjusted. Finer control of brazing is possible by controlling individually based on the change in shape of the brazing solder at the position corresponding to heating.
【００５５】更に、上記の第２の実施の形態では、加熱
コイルの位置を固定としているが、これを移動可能とし
てろう材の形状の変化に応じて移動させるようにし、被
ろう付け対象物への加熱量を制御するようにしてもよ
い。Further, in the above-mentioned second embodiment, the position of the heating coil is fixed, but it can be moved so as to move according to the change of the shape of the brazing material, and the object to be brazed You may make it control the heating amount of.
【図１】この発明の第１の実施の形態によるろう付け装
置の概略構成を示したブロック図である。FIG. 1 is a block diagram showing a schematic configuration of a brazing apparatus according to a first embodiment of the present invention.
【図２】図１で示した撮像カメラ３０による撮像データ
の変化を示した図である。FIG. 2 is a diagram showing changes in image pickup data by the image pickup camera 30 shown in FIG.
【図３】図１で示した接合部材１１及び被接合部材１２
の接合部分の温度変化を示したグラフである。FIG. 3 is a joining member 11 and a joined member 12 shown in FIG.
3 is a graph showing the temperature change of the joint part of FIG.
【図４】図１で示した撮像カメラ３０によって得られた
撮像データの他の例を示した図である。FIG. 4 is a diagram showing another example of image pickup data obtained by the image pickup camera 30 shown in FIG. 1.
【図５】この発明の第２の実施の形態によるろう付け装
置の概略構成を示した図である。FIG. 5 is a diagram showing a schematic configuration of a brazing device according to a second embodiment of the present invention.
【図６】従来の置きろうを用いたトーチろう付けの概要
を示したブロック図である。FIG. 6 is a block diagram showing an outline of torch brazing using a conventional brazing filler metal.
１１…接合部材 １２…被接合部材 １３…ろう付け装置 １５…置きろう １９…バーナー ２０…設置台 ２２…可燃性ガス ２３…支燃性ガス ２４…流量制御器 ２８…位置制御器 ３０…撮像カメラ ３３…制御部 ３６…加熱コイル ３７…高周波発振器 尚、各図中同一符号は同一又は相当部分を示す。 11 ... Joining member 12 ... Member to be joined 13 ... Brazing device 15. Let's put it 19 ... Burner 20 ... Installation stand 22 ... Combustible gas 23 ... Combustible gas 24 ... Flow controller 28 ... Position controller 30 ... Imaging camera 33 ... Control unit 36 ... Heating coil 37 ... High-frequency oscillator In the drawings, the same reference numerals indicate the same or corresponding parts.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B23K 1/00 B23K 3/03 - 3/04 B23K 31/02 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) B23K 1/00 B23K 3/03-3/04 B23K 31/02
Claims (6)
きろうを用いてろう付けするろう付け方法であって、 前記置きろうの形状を認識しつつ、前記接合部分を加熱
手段で加熱し、 前記置きろうの形状の変化に応答して、前記接合部分が
所定温度以上にならないように前記加熱手段を制御す
る、ろう付け方法。1. A brazing method for brazing a joining part between a joining member and a member to be joined using a brazing braze, wherein the joining part is heated by a heating means while recognizing the shape of the brazing braze. A brazing method in which, in response to a change in the shape of the brazing filler metal, the heating means is controlled so that the joint portion does not reach a predetermined temperature or higher.
きろうを用いてろう付けするろう付け装置であって、 前記置きろうの形状を撮像する撮像手段と、 前記接合部分を加熱する加熱手段と、 前記撮像された置きろうの形状変化を判別し、前記判別
された変化に応答して、前記接合部分が所定温度以上に
ならないように前記加熱手段を制御する制御手段とを備
えた、ろう付け装置。2. A brazing apparatus for brazing a joining portion between a joining member and a member to be joined by using a brazing braze, and an imaging means for imaging the shape of the brazing braze, and a heating device for heating the joining portion. And a control unit that determines the shape change of the imaged placement wax and that controls the heating unit so that the joint portion does not reach a predetermined temperature or higher in response to the determined change. Brazing equipment.
々の流量及び供給時間が制御される可燃性ガス及び支燃
性ガスの混合ガスを燃焼して加熱するバーナーを含み、 前記制御手段は、前記流量制御器を制御する、請求項２
記載のろう付け装置。3. The heating means includes a burner that burns and heats a mixed gas of a combustible gas and a combustion-supporting gas whose flow rate and supply time are controlled by a flow rate controller, and the control means includes: 3. The flow rate controller is controlled.
The brazing device described.
波電流が供給される加熱コイルを含み、 前記制御部は、前記高周波発振器を制御する、請求項２
記載のろう付け装置。4. The heating means includes a heating coil to which a high-frequency current is supplied from a high-frequency oscillator, and the control unit controls the high-frequency oscillator.
The brazing device described.
によって制御される設置台に取り付けられたバーナーを
含み、 前記制御手段は、前記位置制御器を制御する、請求項２
記載のろう付け装置。5. The heating means includes a burner attached to a mounting table, the position of which is controlled by a position controller, and the control means controls the position controller.
The brazing device described.
化を判別する、請求項２から請求項５のいずれかに記載
のろう付け装置。6. The brazing apparatus according to claim 2, wherein the imaging unit includes a CCD camera, and the control unit determines a change in an outline of the imaged placement wax. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001064201A JP3483860B2 (en) | 2001-03-08 | 2001-03-08 | Brazing method and brazing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001064201A JP3483860B2 (en) | 2001-03-08 | 2001-03-08 | Brazing method and brazing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002263879A JP2002263879A (en) | 2002-09-17 |
| JP3483860B2 true JP3483860B2 (en) | 2004-01-06 |
Family
ID=18923056
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001064201A Expired - Fee Related JP3483860B2 (en) | 2001-03-08 | 2001-03-08 | Brazing method and brazing device |
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| Country | Link |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010247180A (en) * | 2009-04-15 | 2010-11-04 | Mitsubishi Electric Corp | Brazing apparatus and brazing method using the same |
| JP6432753B2 (en) * | 2013-09-26 | 2018-12-05 | 株式会社富士通ゼネラル | Heat exchanger and heat exchanger manufacturing method |
| JP6326753B2 (en) * | 2013-09-26 | 2018-05-23 | 株式会社富士通ゼネラル | Heat exchanger |
| JP2015064160A (en) * | 2013-09-26 | 2015-04-09 | 株式会社富士通ゼネラル | Heat exchanger and manufacturing method of heat exchanger |
| JP6263922B2 (en) * | 2013-09-26 | 2018-01-24 | 株式会社富士通ゼネラル | Heat exchanger |
| JP2016155137A (en) * | 2015-02-23 | 2016-09-01 | カルソニックカンセイ株式会社 | Joining method and joining device |
| US10835976B2 (en) | 2015-10-26 | 2020-11-17 | Nippon Light Metal Company, Ltd. | Method for manufacturing cooling unit |
| JP7266272B2 (en) * | 2018-05-24 | 2023-04-28 | 株式会社オプトン | brazing equipment |
| JP7162776B2 (en) * | 2020-03-27 | 2022-10-28 | 三菱電機株式会社 | Automatic torch brazing device for copper members and automatic torch brazing method for copper members |
-
2001
- 2001-03-08 JP JP2001064201A patent/JP3483860B2/en not_active Expired - Fee Related
Also Published As
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