JP2002313544A - Method and device for high frequency induction heating - Google Patents
Method and device for high frequency induction heatingInfo
- Publication number
- JP2002313544A JP2002313544A JP2001117646A JP2001117646A JP2002313544A JP 2002313544 A JP2002313544 A JP 2002313544A JP 2001117646 A JP2001117646 A JP 2001117646A JP 2001117646 A JP2001117646 A JP 2001117646A JP 2002313544 A JP2002313544 A JP 2002313544A
- Authority
- JP
- Japan
- Prior art keywords
- induction heating
- frequency
- heating coil
- frequency induction
- heated
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- General Induction Heating (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高周波誘導加熱コ
イルと被加熱体とを互いに接触させることなく間隔を隔
てた状態で、高周波誘導加熱コイルと被加熱体とを相対
的に移動させながら被加熱体を高周波誘導加熱する方法
及びその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 high-frequency induction heating coil and an object to be heated which are moved relatively to each other while the coil and the object to be heated are spaced apart from each other without being in contact with each other. The present invention relates to a method and an apparatus for high-frequency induction heating of a heating body.
【０００２】[0002]
【従来の技術】このような高周波誘導加熱方法及び装置
は、平面或いは非平面でかつ長手方向に延びる加熱対象
領域を有する長尺状部品を高周波移動加熱するために従
来より用いられている。従来においては、多くの場合、
目視によって高周波誘導加熱コイルと被加熱体との間の
間隔（相対距離）を確認しながら手動で高周波誘導加熱
コイルと被加熱体との間の距離を加熱に適正な距離に保
持するように調整を行なっていた。しかし、目視による
調整を行なうには熟練した作業者でなければならず、し
かも、たとえ熟練者が上述の如き距離調整（間隔調整）
を行なったとしても、適正な距離に正確に調整するのは
極めて難しいのが実状である。特に、被加熱体の加熱対
象領域において高周波誘導加熱コイルと被加熱体との相
対移動速度が速くなると、熟練者であっても前記距離の
調整が困難になる。2. Description of the Related Art Such a high-frequency induction heating method and apparatus have been conventionally used for high-frequency moving heating of a long component having a flat or non-planar and longitudinally extending heating target region. Conventionally, in many cases,
Adjust the distance between the high-frequency induction heating coil and the object to be heated manually while maintaining the distance (relative distance) between the high-frequency induction heating coil and the object to be heated visually. Was doing. However, it is necessary to be a skilled worker to perform the visual adjustment, and even if the skilled worker performs the distance adjustment (interval adjustment) as described above.
Even if the above is performed, it is actually difficult to accurately adjust the distance to an appropriate distance. In particular, if the relative moving speed between the high-frequency induction heating coil and the object to be heated becomes high in the area to be heated of the object to be heated, it becomes difficult for even a skilled person to adjust the distance.
【０００３】そこで、このような実状に鑑みて、図３及
び図４に示すように変位センサ１を備えた高周波誘導加
熱装置２が従来より用いられている。本装置２は、多関
節ロボット（図１では図示しない）を使用し、前記多関
節ロボットのアームの先端に設けられた固定台４と、こ
の固定台４に固定された小型変成器５と、この小型変成
器５に取付けられた高周波誘導加熱コイル６と、小型変
成器５に電源を供給するためのフレキシブル水冷ケーブ
ル７とをそれぞれ有しており、上述の固定台４に変位セ
ンサ１が付設されている。ここで用いられている変位セ
ンサ１は、被加熱体８に接触した状態で使用される接触
式のものであって（図５〜図７参照）、高周波誘導加熱
コイル６の近傍位置に対応配置されている。なお、上述
の高周波誘導加熱コイル６には、図５〜図７に示すよう
に、加熱効率を向上させるために磁性材料９が配置され
ている。In view of such circumstances, a high-frequency induction heating device 2 having a displacement sensor 1 as shown in FIGS. 3 and 4 has been conventionally used. This device 2 uses an articulated robot (not shown in FIG. 1), and includes a fixed table 4 provided at the tip of the arm of the articulated robot, a small transformer 5 fixed to the fixed table 4, It has a high-frequency induction heating coil 6 attached to the small transformer 5 and a flexible water-cooling cable 7 for supplying power to the small transformer 5, and the displacement sensor 1 is attached to the fixed base 4. Have been. The displacement sensor 1 used here is of a contact type used in a state of being in contact with the object to be heated 8 (see FIGS. 5 to 7), and is arranged corresponding to a position near the high-frequency induction heating coil 6. Have been. As shown in FIGS. 5 to 7, a magnetic material 9 is arranged in the above-described high-frequency induction heating coil 6 to improve the heating efficiency.
【０００４】かくして、上述の高周波誘導加熱装置２を
用いて高周波誘導加熱を行なう際には、高周波誘導加熱
コイル６の近傍に配置された変位センサ１にて高周波誘
導加熱コイル６と被加熱体８（図 〜図 参照）との間
の距離を検知し、その検知信号を高周波誘導加熱コイル
６と被加熱体８との間の距離を相対的に変化させる機構
（図示せず）にフィードバックすることにより、前記距
離を調整しながら高周波誘導加熱を行なうようにしてい
る。Thus, when performing high-frequency induction heating using the above-described high-frequency induction heating device 2, the high-frequency induction heating coil 6 and the heated object 8 are detected by the displacement sensor 1 arranged near the high-frequency induction heating coil 6. (See FIG. 1 to FIG. 2), and feeds back a detection signal to a mechanism (not shown) that relatively changes the distance between the high-frequency induction heating coil 6 and the heated body 8. Thus, high-frequency induction heating is performed while adjusting the distance.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上述の
如く変位センサ１を使用して高周波誘導加熱コイル６と
被加熱体８との距離を調整するようにした従来の高周波
誘導加熱装置２では、変位センサ１と高周波誘導加熱コ
イル６との相対的な位置関係が被加熱体８の加熱面の形
状に応じて変動してしまうため、高周波誘導加熱コイル
６と被加熱体８との間の距離を正確に検出することがで
きず、従って前記距離の調整を適正に行なうことができ
ない場合がある。However, in the conventional high-frequency induction heating apparatus 2 in which the distance between the high-frequency induction heating coil 6 and the object 8 to be heated is adjusted by using the displacement sensor 1 as described above, Since the relative positional relationship between the sensor 1 and the high-frequency induction heating coil 6 fluctuates according to the shape of the heating surface of the heated body 8, the distance between the high-frequency induction heating coil 6 and the heated body 8 is reduced. In some cases, the distance cannot be detected accurately, so that the distance cannot be properly adjusted.
【０００６】この点について具体的に詳述すると、次の
通りである。先ず、図５に示す如く、被加熱体８の加熱
対象領域が平坦面Ｓ1 である場合、変位センサ１が距離
測定を行なう際の基準面（平坦面）Ｐ0 を設定し、この
基準面Ｐ0 から高周波誘導加熱コイル６の基準点Ｔまで
の距離をＬ0 （一定値）とし、高周波誘導加熱コイル６
と被加熱体８との間の加熱に適正な距離をｄ1 とし、基
準面Ｐ0 から変位センサ１の先端の接触ローラ１ａまで
の距離すなわち前記基準面Ｐ0 から被加熱体８と前記接
触ローラ１ａとの接触点Ｍまでの距離をＬ1 とすると、
被加熱体８の加熱対象領域（被加熱面）が平坦面である
ことから、ｄ1 ＝Ｌ1 −Ｌ0 となる。そこで、被加熱体
８の加熱対象領域が平坦面である場合には、基準面Ｐ0
から変位センサ１の先端の接触ローラ１ａまでの距離が
Ｌ1 の時に高周波誘導加熱コイル６と被加熱体８との間
の距離が適正距離（適正値）ｄ1 となるように加熱コイ
ル移動機構３を図外の多関節ロボットにて作動するよう
に設定することにより、変位センサ１による距離計測の
結果に基づいて、高周波誘導加熱コイル６と被加熱体８
との間の距離を適正距離ｄ1 に調整制御することが可能
である。The following is a detailed description of this point. First, as shown in FIG. 5, to set the reference plane (flat surface) P 0 during when the heating target region is the flat surface S 1, the displacement sensor 1 performs a distance measurement of the heating body 8, the reference plane The distance from P 0 to the reference point T of the high-frequency induction heating coil 6 is defined as L 0 (constant value),
The distance appropriate for heating between the heating element 8 and the object 8 is d 1, and the distance from the reference plane P 0 to the contact roller 1 a at the tip of the displacement sensor 1, that is, the contact between the object 8 and the reference plane P 0. When the distance to the contact point M between the roller 1a and L 1,
Since the area to be heated (the surface to be heated) of the object to be heated 8 is a flat surface, d 1 = L 1 −L 0 . Therefore, when the heating target area of the object to be heated 8 is a flat surface, the reference surface P 0
Distance proper distance (proper value) d 1 and so as to heat the coil moving mechanism between the high-frequency induction heating coil 6 and the object to be heated 8 when the distance to the contact roller 1a of the tip of the displacement sensor 1 is L 1 from 3 is set to be operated by an articulated robot (not shown), so that the high-frequency induction heating coil 6 and the heated object 8
Can be adjusted and controlled to an appropriate distance d 1 .
【０００７】しかし、図６に示す如く被加熱体８の加熱
対象領域が凸状の円弧形状面Ｓ2 であるような場合に上
述のような条件の下で距離の調整制御を行なうようにす
ると、次のような不具合を生じる。なお、図６に示す状
態は、高周波誘導加熱を開始していない状態であって、
高周波誘導加熱コイル６が被加熱体８の円弧形状面Ｓ 2
に適正距離ｄ1 を隔てて配置されると共に変位センサ１
の先端の接触ローラ１ａが円弧形状面Ｓ2 に接触された
時点の状態である。この場合、高周波誘導加熱コイル６
と被加熱体８の加熱対象領域（円弧形状面Ｓ2 ）との間
の距離が適正距離ｄ1 であっても、被加熱体８の加熱対
象領域が円弧形状面Ｓ2 であるため、基準面Ｐ0 から変
位センサ１の先端の接触ローラ１ａまでの距離Ｌ2 が前
記距離Ｌ 1 よりも大きくなる（Ｌ2 ＞Ｌ1 ）。従って、
図５の場合に較べて（Ｌ2 −Ｌ1）に相当する距離分だ
け高周波誘導加熱コイル６と被加熱体８との間の間隔が
離れたような状態として測定（検出）してしまうことと
なり、高周波誘導加熱コイル６が適正位置に配置されて
いるにも拘わらず、高周波誘導加熱コイル６を被加熱体
８に近づけるような移動制御がなされてこれらの間の距
離が適正距離ｄ1 よりも狭く設定される結果となる。か
くして、このような場合には、高周波誘導加熱コイル６
と被加熱体８の円弧形状面Ｓ2 との間の距離を適正距離
ｄ1 に保持することができなくなる。[0007] However, as shown in FIG.
The target area is a convex arc-shaped surface STwoOn when it is like
Control the distance adjustment under the conditions described above.
Then, the following problems occur. The state shown in FIG.
The state is a state where high-frequency induction heating has not been started,
The high-frequency induction heating coil 6 has an arc-shaped surface S of the object 8 to be heated. Two
Suitable distance d1And a displacement sensor 1
Of the contact roller 1a at the tip of theTwoContacted
It is the state at the time. In this case, the high-frequency induction heating coil 6
And the region to be heated of the heated body 8 (the arc-shaped surface STwoBetween)
Distance is appropriate distance d1Even if the heating
Elephant area is arc-shaped surface STwo, The reference plane P0Strange from
Distance L from the tip of position sensor 1 to contact roller 1aTwoBefore
Distance L 1(LTwo> L1). Therefore,
Compared to the case of FIG.Two-L1)
The distance between the high-frequency induction heating coil 6 and the object 8 to be heated is
Measuring (detecting) as a state of being away from
And the high-frequency induction heating coil 6 is arranged at an appropriate position.
The high-frequency induction heating coil 6
8 so that the distance between them is controlled.
Appropriate distance d1This results in being set narrower than. Or
Thus, in such a case, the high-frequency induction heating coil 6
And the arc-shaped surface S of the object 8 to be heatedTwoThe proper distance to the distance between
d1Can not be held.
【０００８】さらに、図６に示す状態にした後に高周波
誘導加熱を開始すると、図７に示す如く被加熱体Ｓの円
弧形状面Ｓ2 が熱膨張等により加熱前の状態から変化量
Ｚだけ膨出変形し、その変化量Ｚの分だけ高周波誘導加
熱コイル６に接近し、高周波誘導加熱コイル６と被加熱
体８の円弧形状面Ｓ2 との間の距離ｄ1 ′はｄ1 ′＝ｄ
1 −Ｚ＜ｄ1 となる。なお、図７において、破線αは変
形前における被加熱体８の形状を示している。この場
合、前記距離ｄ１′の値は加熱に適正な距離ｄ1の値り
よりも小さくなるので、被加熱体８が必要以上に過熱さ
れてしまうか、或いは高周波誘導加熱コイル６が被加熱
体８に接触してしまうおそれがある。Furthermore, when starting the high-frequency induction heating after the state shown in FIG. 6, arcuate surfaces S 2 of the object to be heated S as shown in FIG. 7 only change amount Z from the state before the heating by the thermal expansion or the like Rise Deforms and approaches the high-frequency induction heating coil 6 by the amount of change Z, and the distance d 1 ′ between the high-frequency induction heating coil 6 and the arc-shaped surface S 2 of the object 8 is d 1 ′ = d
1− Z <d 1 . In FIG. 7, the broken line α indicates the shape of the heated body 8 before deformation. In this case, since the value of the distance d1 'is smaller than Neri proper distance d 1 to the heating, or would be overheated more than necessary object to be heated 8, or high-frequency induction heating coil 6 is heated body 8 may come into contact.
【０００９】また、図示を省略したが、被加熱体８の加
熱対象領域の形状が凹状の円弧形状面である場合には、
上記とは全く逆の現象が生じる。この場合には、高周波
誘導加熱コイル６が被加熱体８の円弧形状面に対して適
正距離ｄ1 よりも大きな距離を隔てた位置に調整制御さ
れることとなり、このため高周波誘導加熱が充分に行わ
れず、しかも加熱効率が低下することとなる。Although not shown, if the shape of the region to be heated of the object to be heated 8 is a concave arc-shaped surface,
A phenomenon completely opposite to the above occurs. In this case, it becomes possible to high-frequency induction heating coil 6 is adjusted controlled at a position spaced a greater distance than the appropriate distance d 1 with respect to the arc-shaped surface of the heating body 8 and therefore the high-frequency induction heating is sufficiently This is not performed, and the heating efficiency is reduced.
【００１０】本発明は、このような不具合を解消するた
めになされたものであって、その目的は、作業者の熟練
を必要とせず、被加熱体の加熱対象領域がどのような形
状であっても適正に高周波誘導加熱を行なうことができ
るような高周波誘導加熱方法及び装置を提供することに
ある。The present invention has been made in order to solve such a problem, and has as its object the purpose of requiring any skill of an operator and the shape of an object to be heated of an object to be heated. It is another object of the present invention to provide a high-frequency induction heating method and apparatus capable of appropriately performing high-frequency induction heating.
【００１１】[0011]
【課題を解決するための手段】上述の目的を達成するた
めに、本発明では、高周波電源に接続された高周波誘導
加熱コイルと被加熱体とを互いに接触させることなく間
隔を隔てた状態で、前記高周波誘導加熱コイルと被加熱
体とを相対的に移動させながら前記被加熱体を高周波誘
導加熱する方法において、前記高周波誘導加熱コイルと
被加熱体との間の距離の変化に伴って変化する前記高周
波電源の出力電圧、出力電流、発振周波数、及び前記高
周波誘導加熱コイルに流れる高周波電流のうちの少なく
とも１つについての変化量を検出し、この変化量に基づ
いて、前記高周波誘導加熱コイルと被加熱体との間の距
離を加熱に適正な距離に常に保持するようにしている。
また、本発明では、（ａ） 被加熱体の加熱対象領域に
対応配置される高周波誘導加熱コイルと、（ｂ） 前記
高周波誘導加熱コイルに一定の高周波出力電圧を供給す
るように構成された高周波電源と、（ｃ） 前記高周波
電源から出力される高周波出力電流、前記高周波電源の
発振周波数、及び前記高周波誘導加熱コイルに流れる高
周波電流のうちの少なくとも１つについての変化量を検
出する検出手段と、（ｄ） 前記検出手段にて検出され
た変化量に基づいて、前記高周波誘導加熱コイルを被加
熱体に対して移動させて前記高周波誘導加熱コイルと被
加熱体との相対距離を調整する加熱コイル移動手段と、
をそれぞれ備え、前記加熱コイル移動手段により前記高
周波誘導加熱コイルを前記被加熱体に対して加熱に適正
な距離を保持する位置に常に配置するようにしている。
また、本発明では、（ａ） 被加熱体の加熱対象領域に
対応配置される高周波誘導加熱コイルと、（ｂ） 前記
高周波誘導加熱コイルに一定の高周波出力電流を供給す
るように構成された高周波電源と、（ｃ） 前記高周波
電源から出力される高周波出力電圧及び発振周波数のう
ちの少なくとも１つについての変化量を検出する検出手
段と、（ｄ） 前記検出手段にて検出された変化量に基
づいて、前記高周波誘導加熱コイルを被加熱体に対して
移動させて前記高周波誘導加熱コイルと被加熱体との相
対距離を調整する加熱コイル移動手段と、をそれぞれ備
え、前記加熱コイル移動手段により前記高周波誘導加熱
コイルを前記被加熱体に対して加熱に適正な間隔を保持
する位置に常に配置するようにしている。また、本発明
では、（ａ） 被加熱体の加熱対象領域に対応配置され
る高周波誘導加熱コイルと、（ｂ） 前記高周波誘導加
熱コイルに一定の高周波出力電力を供給するように構成
された高周波電源と、（ｃ） 前記高周波電源から出力
される高周波出力電圧、高周波出力電流、前記高周波電
源の発振周波数、及び前記高周波誘導加熱コイルに流れ
る高周波電流のうちの少なくとも１つについての変化量
を検出する検出手段と、（ｄ） 前記検出手段にて検出
された変化量に基づいて、前記高周波誘導加熱コイルを
被加熱体に対して移動させて前記高周波誘導加熱コイル
と被加熱体との相対距離を調整する加熱コイル移動手段
と、をそれぞれ備え、前記加熱コイル移動手段により前
記高周波誘導加熱コイルを前記被加熱体に対して加熱に
適正な間隔を保持する位置に常に配置するようにしてい
る。In order to achieve the above-mentioned object, according to the present invention, a high-frequency induction heating coil connected to a high-frequency power supply and an object to be heated are spaced apart from each other without contact with each other. In the method of performing high-frequency induction heating on the object to be heated while relatively moving the high-frequency induction heating coil and the object to be heated, the method changes with a change in the distance between the high-frequency induction heating coil and the object to be heated. An output voltage of the high-frequency power supply, an output current, an oscillation frequency, and a change amount of at least one of a high-frequency current flowing through the high-frequency induction heating coil are detected, and based on the change amount, the high-frequency induction heating coil and The distance from the object to be heated is always kept at an appropriate distance for heating.
Further, in the present invention, (a) a high-frequency induction heating coil arranged corresponding to a region to be heated of the object to be heated, and (b) a high-frequency induction coil configured to supply a constant high-frequency output voltage to the high-frequency induction heating coil A power supply; and (c) detection means for detecting a change in at least one of a high-frequency output current output from the high-frequency power supply, an oscillation frequency of the high-frequency power supply, and a high-frequency current flowing through the high-frequency induction heating coil. (D) heating for adjusting the relative distance between the high-frequency induction heating coil and the object to be heated by moving the high-frequency induction heating coil relative to the object to be heated based on the amount of change detected by the detection means; Coil moving means;
And the heating coil moving means always arranges the high-frequency induction heating coil at a position that maintains a proper distance for heating with respect to the object to be heated.
Further, in the present invention, (a) a high-frequency induction heating coil arranged corresponding to a region to be heated of an object to be heated, and (b) a high-frequency induction coil configured to supply a constant high-frequency output current to the high-frequency induction heating coil A power supply; (c) a detecting means for detecting a change amount of at least one of a high-frequency output voltage and an oscillation frequency output from the high-frequency power supply; and (d) a change amount detected by the detecting means. Heating coil moving means for adjusting the relative distance between the high-frequency induction heating coil and the object to be heated by moving the high-frequency induction heating coil with respect to the object to be heated, based on the heating coil moving means. The high-frequency induction heating coil is always arranged at a position that maintains an appropriate interval for heating with respect to the object to be heated. Further, in the present invention, (a) a high-frequency induction heating coil arranged corresponding to a region to be heated of the object to be heated, and (b) a high-frequency induction heating coil configured to supply a constant high-frequency output power to the high-frequency induction heating coil And (c) detecting a change amount of at least one of a high-frequency output voltage, a high-frequency output current, an oscillation frequency of the high-frequency power supply, and a high-frequency current flowing through the high-frequency induction heating coil output from the high-frequency power supply. And (d) moving the high-frequency induction heating coil with respect to the object to be heated based on the amount of change detected by the detection means, and setting a relative distance between the high-frequency induction heating coil and the object to be heated. And a heating coil moving means for adjusting a distance between the high-frequency induction heating coil and the object to be heated by the heating coil moving means. Is always arranged at the position where the is held.
【００１２】高周波誘導加熱コイルと被加熱体を相対的
に移動させながら高周波誘導加熱する際、高周波出力電
圧を一定とした場合、高周波電源から出力される高周波
出力電流、高周波電源の発振周波数、及び、高周波誘導
加熱コイルに流れる高周波電流は、高周波誘導加熱コイ
ルと被加熱体との距離の変化に伴い変化する。その高周
波出力電流の変化量、発振周波数の変化量、若しくは高
周波誘導加熱コイルに流れる高周波電流の変化量の少な
くとも１つの変化量を、高周波誘導加熱コイルと被加熱
体との相対位置を変化させる機構を備えた装置の制御ユ
ニットにフィードバックすることによって、高周波誘導
加熱コイルと被加熱体との間の距離を加熱に適正な距離
に保持しながら高周波誘導加熱コイルと被加熱体を相対
的に移動させて高周波誘導加熱を行なうことが可能にな
る。これは、高周波出力電流或いは高周波出力電力を一
定とした場合でも同様である。高周波出力電流を一定と
した場合には、高周波出力電圧の変化量及び発振周波数
の変化量のうちの少なくとも１つの変化量に基づいて、
また高周波出力電力を一定とした場合には、高周波出力
電圧の変化量、高周波出力電流の変化量、発振周波数の
変化量、及び高周波誘導加熱コイルに流れる高周波電流
の変化量のうちの少なくとも１つの変化量に基づいて、
高周波誘導加熱コイルと被加熱体との間の距離を加熱に
適正な距離に保持しながら高周波誘導加熱コイルと被加
熱体を相対的に移動させて高周波誘導加熱を行なうこと
が可能になる。When the high-frequency induction heating is performed while the high-frequency induction heating coil and the object to be heated are relatively moved, the high-frequency output current output from the high-frequency power supply, the oscillation frequency of the high-frequency power supply, and The high-frequency current flowing through the high-frequency induction heating coil changes with a change in the distance between the high-frequency induction heating coil and the object to be heated. A mechanism for changing the relative position between the high-frequency induction heating coil and the object to be heated by changing at least one of the change amount of the high-frequency output current, the change amount of the oscillation frequency, or the change amount of the high-frequency current flowing through the high-frequency induction heating coil. By feeding back to the control unit of the device equipped with the, the high-frequency induction heating coil and the object to be heated are relatively moved while maintaining the distance between the high-frequency induction heating coil and the object to be heated at a proper distance for heating. Thus, high-frequency induction heating can be performed. This is the same even when the high-frequency output current or the high-frequency output power is fixed. When the high-frequency output current is constant, based on at least one of the change amount of the high-frequency output voltage and the change amount of the oscillation frequency,
When the high-frequency output power is constant, at least one of a change in the high-frequency output voltage, a change in the high-frequency output current, a change in the oscillation frequency, and a change in the high-frequency current flowing through the high-frequency induction heating coil. Based on the amount of change
While maintaining the distance between the high-frequency induction heating coil and the object to be heated at an appropriate distance for heating, the high-frequency induction heating coil and the object to be heated can be relatively moved to perform high-frequency induction heating.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施形態について
図１及び図２を参照して説明する。なお、図１及び図２
において、図３〜図７と同様の部分には同一の符号を付
して重複する説明を省略する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2
, The same parts as those in FIGS. 3 to 7 are denoted by the same reference numerals, and redundant description will be omitted.
【００１４】図１及び図２は、本発明の一実施形態に係
る高周波誘導加熱方法を施行する高周波誘導加熱装置１
０を示すものである。図１及び図２に示すように、本装
置１０は、自動車のボディーパネル１１を被加熱体（加
熱対象）とし、載置治具１２上に固定されたボディーパ
ネル１１に対して高周波誘導加熱コイル６を相対的に移
動させることにより、ボディーパネル１１の所要の加熱
対象領域を焼入処理等のために高周波誘導加熱する装置
である。なお、高周波誘導加熱コイル６の移動手段とし
て多関節ロボット１３が用いられており、後に詳述する
如く、この多関節ロボット１３を駆動制御する駆動制御
ユニット１４（図２参照）に所要の指令信号が入力され
るのに応じて、高周波誘導加熱コイル６とボディーパネ
ル１１との間の距離が適正距離に調整されるようになっ
ている。FIGS. 1 and 2 show a high-frequency induction heating apparatus 1 for performing a high-frequency induction heating method according to an embodiment of the present invention.
It indicates 0. As shown in FIGS. 1 and 2, the present apparatus 10 has a body panel 11 of an automobile as an object to be heated (an object to be heated), and a high-frequency induction heating coil for the body panel 11 fixed on a mounting jig 12. 6 is a device for performing high-frequency induction heating of a required heating target area of the body panel 11 for quenching or the like by relatively moving 6. Note that an articulated robot 13 is used as a moving means of the high-frequency induction heating coil 6, and as will be described in detail later, a required command signal is sent to a drive control unit 14 (see FIG. 2) for driving and controlling the articulated robot 13. Is input, the distance between the high-frequency induction heating coil 6 and the body panel 11 is adjusted to an appropriate distance.
【００１５】多関節ロボット１３のアーム３の先端部分
には固定台４が取付られ、この固定台４に小型変成器５
が取付けられている。そして、小型変成器５は、多関節
ロボット１３のアームの動きを妨げないようなフレキシ
ブルな水冷ケーブル８を介して高周波電源（高周波発振
器）１５に接続されると共に、この小型変成器５に高周
波誘導加熱コイル６が接続されている。また、上述の高
周波誘導誘導加熱コイル６には、加熱効率を向上させる
ための磁性材料（図示せず）が取付けられている。一
方、被加熱体であるボディーパネル１１を載置するため
の載置治具１２は、アンカーボルト等で床面に固定され
ている。さらに、図１に示すように、焼入冷却水供給用
ホース１６が加熱コイル移動機構３に沿って配設され、
この焼入水供給用ホース１６を介して供給される焼入冷
却水をボディーパネル１１の加熱部分に向けて噴射する
焼入冷却ジャケット１７が高周波誘導加熱コイル６に近
傍箇所に配置されている。A fixed base 4 is attached to the tip of the arm 3 of the articulated robot 13, and a small transformer 5 is mounted on the fixed base 4.
Is installed. The small transformer 5 is connected to a high-frequency power source (high-frequency oscillator) 15 via a flexible water-cooled cable 8 that does not hinder the movement of the arm of the articulated robot 13, and a high-frequency induction is applied to the small transformer 5. The heating coil 6 is connected. Further, a magnetic material (not shown) for improving the heating efficiency is attached to the high-frequency induction heating coil 6 described above. On the other hand, a mounting jig 12 for mounting the body panel 11, which is a body to be heated, is fixed to the floor with anchor bolts or the like. Further, as shown in FIG. 1, a quenching cooling water supply hose 16 is provided along the heating coil moving mechanism 3,
A quenching cooling jacket 17 that injects quenching cooling water supplied through the quenching water supply hose 16 toward a heated portion of the body panel 11 is disposed in the vicinity of the high-frequency induction heating coil 6.
【００１６】かくして、高周波電源１５により通電状態
となされている高周波誘導加熱コイル６が、載置治具１
２上に載置されたボディーパネル１１の加熱対象領域に
対して後述の如く常に適正な間隔を保持した状態で加熱
対象領域の始端から終端まで多関節ロボット１３により
移動されて高周波誘導加熱が行なわれ、しかる後にその
加熱部分に焼入冷却ジャケット１７から焼入水が噴射さ
れて焼入処理がなされるようになっている。Thus, the high-frequency induction heating coil 6, which is energized by the high-frequency power supply 15, is mounted on the mounting jig 1.
2 is moved by the articulated robot 13 from the start end to the end of the heating target area while always maintaining an appropriate distance with respect to the heating target area of the body panel 11 mounted on the body panel 11 to perform high-frequency induction heating. Thereafter, quenching water is injected from the quenching cooling jacket 17 to the heated portion to perform a quenching process.
【００１７】また、上述の高周波誘導加熱装置１０は、
上述の高周波誘導加熱に際して高周波誘導加熱コイル６
とボディーパネル（被加熱体）１２との間の距離を常に
適正な距離に保持するための制御系２０（図２参照）を
備えている。なお、制御系２０を構成するに当たって
は、高周波電源１５の高周波出力電圧を一定とした状態
の下で、高周波誘導加熱コイル６と被加熱体（例えばボ
ディーパネル１１）との間の距離ｄを変化させて、高周
波電源１５から出力される高周波出力電流（高周波電源
１５内の高周波電流）、及び、高周波電源１５の発振周
波数（駆動周波数）をそれぞれ計測した。それにより得
られたデータは、下記の表１に示す如くであった。The high-frequency induction heating device 10 described above
In the above-described high-frequency induction heating, the high-frequency induction heating coil 6
There is provided a control system 20 (see FIG. 2) for always maintaining the distance between the body panel (heated body) 12 and the body panel 12 at an appropriate distance. In configuring the control system 20, the distance d between the high-frequency induction heating coil 6 and the object to be heated (for example, the body panel 11) is changed while the high-frequency output voltage of the high-frequency power supply 15 is kept constant. The high-frequency output current (high-frequency current in the high-frequency power supply 15) output from the high-frequency power supply 15 and the oscillation frequency (drive frequency) of the high-frequency power supply 15 were measured. The data obtained was as shown in Table 1 below.
【００１８】[0018]
【表１】 [Table 1]
【００１９】上記の表１に示されるデータを勘案した結
果、高周波電源１５の高周波出力電圧を一定とした状態
の下では、前記距離ｄが変化するのに伴って高周波出力
電流及び発振周波数が変化することが確認された。そこ
で、本実施形態においては、図２のような構成の制御系
２０を用いて高周波出力電流の変化を多関節ロボット１
３の駆動制御ユニット１４にフィードバックして高周波
誘導加熱コイル６とボディーパネル１１との間の距離を
常の適正な距離となるように調整するようにしている。As a result of considering the data shown in Table 1 above, under the condition that the high frequency output voltage of the high frequency power supply 15 is kept constant, the high frequency output current and the oscillation frequency change as the distance d changes. It was confirmed that. Therefore, in the present embodiment, the control system 20 having the configuration shown in FIG.
3 is fed back to the drive control unit 14 so that the distance between the high-frequency induction heating coil 6 and the body panel 11 is adjusted to be a normal appropriate distance.
【００２０】図２に示す制御系２０は、高周波電源１５
から出力される高周波出力電圧を一定とした状態の下
で、高周波誘導加熱コイル６とボディーパネル１１との
間の距離ｄを適正な距離ｄ1 に設定し得るような構成と
なっている。具体的には、上述の制御系２０は、図２に
示すように、高周波電源１５から出力される高周波出力
電圧を検出する出力電圧検出器２１と、この出力電圧検
出器２１から出力される電圧検出値と予め基準値として
設定されている電圧設定値とを比較してその比較値に応
じた高周波出力電圧調整指令を高周波電源１５に入力す
る出力電圧調整指令出力回路２２と、高周波電源１５か
ら出力される高周波出力電流を検出するための出力電流
検出器２３と、この出力電流検出器２３にて検出された
高周波出力電流と予め基準値として設定されている電流
設定値とを比較してその比較値に応じた距離調整指令を
多関節ロボット１３の駆動制御ユニット１４に入力する
距離調整指令出力回路２４とから構成されている。The control system 20 shown in FIG.
The configuration is such that the distance d between the high-frequency induction heating coil 6 and the body panel 11 can be set to an appropriate distance d 1 under the condition that the high-frequency output voltage output from the. Specifically, as shown in FIG. 2, the control system 20 includes an output voltage detector 21 for detecting a high-frequency output voltage output from the high-frequency power supply 15, and a voltage output from the output voltage detector 21. An output voltage adjustment command output circuit 22 for comparing the detected value with a voltage set value preset as a reference value and inputting a high frequency output voltage adjustment command corresponding to the comparison value to the high frequency power supply 15; An output current detector 23 for detecting a high-frequency output current to be output, and comparing the high-frequency output current detected by the output current detector 23 with a current set value set in advance as a reference value. A distance adjustment command output circuit 24 for inputting a distance adjustment command corresponding to the comparison value to the drive control unit 14 of the articulated robot 13.
【００２１】上述の制御系２０により高周波誘導加熱装
置１０は、次のように制御される。まず、高周波誘導加
熱コイル６を通電状態にしてボディーパネル１１の加熱
対象領域を高周波誘導加熱しているときに、高周波電源
１５の高周波出力電圧が出力電圧検出器２１にて検出さ
れ、検出された高周波出力電圧に応じて高周波出力電圧
調整指令信号が出力電圧調整指令出力回路２２から多関
節ロボット１３の駆動制御ユニット１４に送られ、これ
に基づいて、高周波電源１５から出力される高周波出力
電圧が常に一定に維持される。The high frequency induction heating apparatus 10 is controlled by the control system 20 as follows. First, the high-frequency output voltage of the high-frequency power supply 15 is detected by the output voltage detector 21 when the high-frequency induction heating coil 6 is energized to perform the high-frequency induction heating of the region to be heated of the body panel 11. A high-frequency output voltage adjustment command signal is sent from the output voltage adjustment command output circuit 22 to the drive control unit 14 of the articulated robot 13 according to the high-frequency output voltage, and the high-frequency output voltage output from the high-frequency power supply 15 is It is always kept constant.
【００２２】このような状態（出力電圧一定状態）の下
で、高周波誘導加熱コイル６とボディーパネル１１との
間の距離が変化するのに応じて高周波電源１５からの高
周波出力電流が変化すると、その変化量が出力電流検出
器２３及び距離調整指令出力回路２４により検出され、
その変化量に応じて、距離調整指令信号が多関節ロボッ
ト１３の駆動制御ユニット１４に入力される。これによ
り、多関節ロボット１３が上述の距離調整指令信号に基
づいて作動されるのに伴って、高周波誘導加熱コイル６
とボディーパネル１１との間の距離ｄが常に適正距離ｄ
1 となるように調整制御される。In such a state (constant output voltage state), when the high-frequency output current from the high-frequency power supply 15 changes as the distance between the high-frequency induction heating coil 6 and the body panel 11 changes, The change amount is detected by the output current detector 23 and the distance adjustment command output circuit 24,
A distance adjustment command signal is input to the drive control unit 14 of the articulated robot 13 according to the amount of change. As a result, as the articulated robot 13 is operated based on the above-described distance adjustment command signal, the high-frequency induction heating coil 6
The distance d between the body and the body panel 11 is always the proper distance d.
The adjustment is controlled so as to be 1 .
【００２３】すなわち、本実施形態では、高周波誘導加
熱中に高周波誘導加熱コイル６に供給される高周波電流
を検知して増幅し、その変化量を多関節ロボット１３の
アームの移動量に変換して成る距離調整指令信号を多関
節ロボット１３の駆動制御ユニット１４に入力し、これ
により、高周波誘導加熱コイル６とボディーパネル１１
との間の距離ｄが常に加熱に適正な距離ｄ1 を保つよう
に多関節ロボット１３を制御するように構成している。That is, in the present embodiment, the high-frequency current supplied to the high-frequency induction heating coil 6 is detected and amplified during the high-frequency induction heating, and the amount of change is converted into the amount of movement of the arm of the articulated robot 13. The distance adjustment command signal is input to the drive control unit 14 of the articulated robot 13 so that the high-frequency induction heating coil 6 and the body panel 11
The multi-joint robot 13 is configured to control the articulated robot 13 such that the distance d between the robot and the robot always keeps a proper distance d 1 for heating.
【００２４】また、上述の実施形態では、高周波電源１
５から出力される高周波出力電圧を一定にした状態の下
で高周波誘導加熱中における高周波出力電流の変化量を
フィードバック要素としているが、これに限らず、高周
波出力電圧を一定にした状態の下で高周波電源１５の発
振周波数の変化量のみ、或いは、発振周波数の変化量及
び既述の高周波出力電流の変化量の組合せ、それらを比
較した結果をフィードバック要素として用いるようにし
ても良い。この場合にも、既述の実施形態と同様に、高
周波誘導加熱コイル６とボディーパネル１１との間の距
離ｄを常に適正距離ｄ1 に保持することができる。In the above embodiment, the high-frequency power source 1
The change amount of the high-frequency output current during the high-frequency induction heating under the condition that the high-frequency output voltage output from 5 is constant is used as a feedback element. However, the present invention is not limited to this. Only the change amount of the oscillation frequency of the high-frequency power supply 15 or a combination of the change amount of the oscillation frequency and the change amount of the above-described high-frequency output current may be used as a feedback element. Also in this case, it can be held similarly to the above embodiment, the distance d between the high-frequency induction heating coil 6 and the body panel 11 always appropriate distance d 1.
【００２５】また、高周波電源１５から出力される高周
波出力電流を一定にした状態の下で、高周波誘導加熱中
に高周波電源１５から出力される高周波出力電圧及び発
振周波数のうちの少なくとも１つについての変化量を検
出し、その変化量に基づいて多関節ロボット１３を作動
させて高周波誘導加熱コイル６とボディーパネル１１と
の間の距離ｄを適正距離ｄ1 に調整制御するようにして
も良い。Further, under the condition that the high-frequency output current output from the high-frequency power supply 15 is kept constant, at least one of the high-frequency output voltage and the oscillation frequency output from the high-frequency power supply 15 during the high-frequency induction heating. detecting the amount of change may be adjusted controlled to a proper distance d 1 the distance d between the high-frequency induction heating coil 6 and the body panel 11 by operating the articulated robot 13 based on the amount of change.
【００２６】また、高周波電源１５から出力される高周
波出力電力を一定にした状態の下で、高周波誘導加熱中
に高周波電源１５から出力される高周波出力電圧，高周
波出力電流、及び発振周波数のうちの少なくとも１つに
ついての変化量を検出し、その変化量に基づいて多関節
ロボット１３を作動させて高周波誘導加熱コイル６とボ
ディーパネル１１との間の距離ｄを適正距離ｄ1 に調整
制御するようにしても良い。In a state where the high frequency output power output from the high frequency power supply 15 is kept constant, the high frequency output voltage, the high frequency output current, and the oscillation frequency of the high frequency output voltage output from the high frequency power supply 15 during the high frequency induction heating. detecting a change in amount of at least one, to adjust the control to the appropriate distance d 1 the distance d between the high-frequency induction heating coil 6 and the body panel 11 by operating the articulated robot 13 based on the amount of change You may do it.
【００２７】また、高周波電源１５から出力される高周
波出力電圧又は高周波出力電力を一定にした状態の下
で、高周波誘導加熱中に高周波誘導加熱コイルに流れる
高周波電流の変化量を検出し、その変化量に基づいて多
関節ロボット１３を作動させて高周波誘導加熱コイル６
とボディーパネル１１との間の距離ｄを適正距離ｄ1 に
調整制御するようにしても良い。このように高周波誘導
加熱コイル６に流れる高周波電流の変化量をフィードバ
ック要素とした場合には、距離調整をより高精度で行な
うことが可能となる。なお、高周波誘導加熱コイル６に
流れる高周波電流の計測（検出）のために、例えばロゴ
スキータイプの電流検出器等を使用することにより装置
をコンパクトにすることができる。Further, the amount of change in the high-frequency current flowing through the high-frequency induction heating coil during the high-frequency induction heating is detected under the condition that the high-frequency output voltage or the high-frequency output power output from the high-frequency power supply 15 is kept constant. The high-frequency induction heating coil 6 is operated by operating the articulated robot 13 based on the amount.
And may be adjusted controlled to a proper distance d 1 the distance d between the body panel 11. When the amount of change in the high-frequency current flowing through the high-frequency induction heating coil 6 is used as a feedback element, the distance can be adjusted with higher accuracy. The apparatus can be made compact by using, for example, a Rogowski type current detector for measuring (detecting) a high-frequency current flowing through the high-frequency induction heating coil 6.
【００２８】以上、本発明の実施形態につき述べたが、
本発明はこれらの実施形態に限定されるものではなく、
本発明の技術的思想に基づいて各種の変形及び変更が可
能である。例えば、既述の実施形態では、被加熱体（ボ
ディーパネル１１等）を固定して高周波誘導加熱コイル
６を移動させながら加熱を行なうようにしているが、高
周波誘導加熱コイル６を固定（静止）した状態で被加熱
体を移動させる場合でも本発明を適用できることは言う
迄もない。また、被加熱体としては、ボディーパネル１
１の限らず、その他の各種の部材である場合にも本発明
を適用可能である。The embodiments of the present invention have been described above.
The present invention is not limited to these embodiments,
Various modifications and changes are possible based on the technical idea of the present invention. For example, in the above-described embodiment, heating is performed while moving the high-frequency induction heating coil 6 while fixing the object to be heated (the body panel 11 and the like). However, the high-frequency induction heating coil 6 is fixed (stationary). It is needless to say that the present invention can be applied to a case where the object to be heated is moved in the state where the object is heated. The body to be heated includes the body panel 1
The present invention is applicable to not only one but also various other members.
【００２９】[0029]
【発明の効果】以上の如く、本発明は、高周波誘導加熱
コイルと被加熱体を相対的に移動させながら高周波誘導
加熱する際に、高周波誘導加熱コイルと被加熱体との距
離の変化に伴って変化する発振周波数、出力電圧、出力
電流、及び高周波誘導加熱コイルに流れる高周波電流の
うちの少なくとも１つについての変化量を検出し、この
変化量に基づいて、前記高周波誘導加熱コイルと被加熱
体との相互間の距離を加熱に適正な距離に常に保持する
ようにしたものであるから、手動による距離（間隔）調
整のように作業者の熟練を必要とせず、また特に被加熱
体の加熱対象領域が非平面でかつ複雑な形状であったと
しても、従来のように変位センサーを使用する場合に較
べてより平易にしかも適正に高周波誘導加熱することが
可能となる。さらに、本発明によれば、変位センサーを
使用しないので高周波誘導加熱コイルの周辺の構造を簡
素化することができる。As described above, according to the present invention, when the high-frequency induction heating coil and the object to be heated are moved relative to each other, the distance between the high-frequency induction heating coil and the object to be heated is changed. A change amount of at least one of an oscillating frequency, an output voltage, an output current, and a high-frequency current flowing through the high-frequency induction heating coil, which change based on the change amount. Since the distance between the body and the body is always maintained at an appropriate distance for heating, it does not require the skill of an operator as in the manual adjustment of the distance (interval), and in particular, the heating of the body to be heated is not required. Even if the area to be heated is non-planar and has a complicated shape, high-frequency induction heating can be performed more simply and appropriately than in the case where a displacement sensor is used as in the related art. Further, according to the present invention, since the displacement sensor is not used, the structure around the high frequency induction heating coil can be simplified.
【図１】本発明の一実施形態に係る高周波誘導加熱装置
の側面図である。FIG. 1 is a side view of a high-frequency induction heating device according to an embodiment of the present invention.
【図２】図１の高周波誘導加熱装置に備えられた制御系
の構成を示す構成図である。FIG. 2 is a configuration diagram showing a configuration of a control system provided in the high-frequency induction heating device of FIG. 1;
【図３】接触式変位センサを備えた従来の高周波誘導加
熱装置の正面図である。FIG. 3 is a front view of a conventional high-frequency induction heating device including a contact displacement sensor.
【図４】図６の高周波誘導加熱装置の側面図である。FIG. 4 is a side view of the high-frequency induction heating device of FIG. 6;
【図５】被加熱体の加熱面が平坦面である場合における
被加熱体、変位センサ及び高周波誘導加熱コイルの配置
関係を示す側面図である。FIG. 5 is a side view showing an arrangement relationship of the object to be heated, the displacement sensor, and the high-frequency induction heating coil when the surface to be heated of the object to be heated is a flat surface.
【図６】被加熱体の加熱面が凸状の円弧形状面である場
合における被加熱体、変位センサ及び高周波誘導加熱コ
イルの加熱開始前の配置関係を示す側面図である。FIG. 6 is a side view showing an arrangement relationship between the object to be heated, the displacement sensor, and the high-frequency induction heating coil before the start of heating when the object to be heated is a convex arc-shaped surface.
【図７】加熱開始後に被加熱体が熱膨張した状態を示す
図６と同様の側面図である。FIG. 7 is a side view similar to FIG. 6, showing a state in which the object to be heated has thermally expanded after the start of heating.
３ 加熱コイル移動機構 ５ 小型変成器 ６ 高周波誘導加熱コイル １０ 高周波誘導加熱装置 １１ ボディーパネル（被加熱体） １３ 多関節ロボット １４ 駆動制御ユニット １５ 高周波電源（高周波発振器） ２０ 制御系 ２１ 出力電圧検出器 ２２ 出力電圧調整指令出力回路 ２３ 出力電流検出器 ２４ 距離調整指令出力回路 Reference Signs List 3 heating coil moving mechanism 5 small transformer 6 high frequency induction heating coil 10 high frequency induction heating device 11 body panel (heated body) 13 articulated robot 14 drive control unit 15 high frequency power supply (high frequency oscillator) 20 control system 21 output voltage detector 22 Output voltage adjustment command output circuit 23 Output current detector 24 Distance adjustment command output circuit
───────────────────────────────────────────────────── フロントページの続き (72)発明者 久保 啓一 東京都千代田区丸の内３丁目３番１号 電 気興業株式会社内 Ｆターム(参考） 3K059 AA09 AB00 AC03 AC07 AC12 AC37 AD04 AD15 AD22 BD01 CD03 CD07 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Keiichi Kubo Inventor F-term (Reference) 33-1, Marunouchi, Chiyoda-ku, Tokyo 3K059 AA09 AB00 AC03 AC07 AC12 AC37 AD04 AD15 AD22 BD01 CD03 CD07
Claims (4)
コイルと被加熱体とを互いに接触させることなく間隔を
隔てた状態で、前記高周波誘導加熱コイルと被加熱体と
を相対的に移動させながら前記被加熱体を高周波誘導加
熱する方法において、前記高周波誘導加熱コイルと被加
熱体との間の距離の変化に伴って変化する前記高周波電
源の出力電圧、出力電流、発振周波数、及び前記高周波
誘導加熱コイルに流れる高周波電流のうちの少なくとも
１つについての変化量を検出し、この変化量に基づい
て、前記高周波誘導加熱コイルと被加熱体との間の距離
を加熱に適正な距離に常に保持するようにしたことを特
徴とする高周波誘導加熱方法。1. A high-frequency induction heating coil connected to a high-frequency power supply and an object to be heated are spaced apart from each other without being in contact with each other, while relatively moving the high-frequency induction heating coil and the object to be heated. In the method of high-frequency induction heating of the object to be heated, the output voltage, the output current, the oscillation frequency, and the high-frequency induction of the high-frequency power supply, which change with a change in the distance between the high-frequency induction heating coil and the object to be heated. The amount of change in at least one of the high-frequency currents flowing through the heating coil is detected, and based on the amount of change, the distance between the high-frequency induction heating coil and the object to be heated is always maintained at a distance appropriate for heating. A high-frequency induction heating method characterized in that:
置される高周波誘導加熱コイルと、（ｂ） 前記高周波
誘導加熱コイルに一定の高周波出力電圧を供給するよう
に構成された高周波電源と、（ｃ） 前記高周波電源か
ら出力される高周波出力電流、前記高周波電源の発振周
波数、及び前記高周波誘導加熱コイルに流れる高周波電
流のうちの少なくとも１つについての変化量を検出する
検出手段と、（ｄ） 前記検出手段にて検出された変化
量に基づいて、前記高周波誘導加熱コイルを被加熱体に
対して移動させて前記高周波誘導加熱コイルと被加熱体
との相対距離を調整する加熱コイル移動手段と、をそれ
ぞれ備え、前記加熱コイル移動手段により前記高周波誘
導加熱コイルを前記被加熱体に対して加熱に適正な距離
を保持する位置に常に配置するようにしたことを特徴と
する高周波誘導加熱装置。2. A high-frequency induction heating coil arranged corresponding to a region to be heated of an object to be heated, and a high-frequency power supply configured to supply a constant high-frequency output voltage to the high-frequency induction heating coil. (C) detecting means for detecting a change in at least one of a high-frequency output current output from the high-frequency power supply, an oscillation frequency of the high-frequency power supply, and a high-frequency current flowing through the high-frequency induction heating coil; (D) a heating coil for adjusting the relative distance between the high-frequency induction heating coil and the object to be heated by moving the high-frequency induction heating coil with respect to the object to be heated based on the amount of change detected by the detection means; Moving means, and the heating coil moving means always arranges the high-frequency induction heating coil at a position which maintains an appropriate distance for heating with respect to the object to be heated. A high-frequency induction heating device characterized by being placed.
置される高周波誘導加熱コイルと、（ｂ） 前記高周波
誘導加熱コイルに一定の高周波出力電流を供給するよう
に構成された高周波電源と、（ｃ） 前記高周波電源か
ら出力される高周波出力電圧及び発振周波数のうちの少
なくとも１つについての変化量を検出する検出手段と、
（ｄ） 前記検出手段にて検出された変化量に基づい
て、前記高周波誘導加熱コイルを被加熱体に対して移動
させて前記高周波誘導加熱コイルと被加熱体との相対距
離を調整する加熱コイル移動手段と、をそれぞれ備え、
前記加熱コイル移動手段により前記高周波誘導加熱コイ
ルを前記被加熱体に対して加熱に適正な間隔を保持する
位置に常に配置するようにしたことを特徴とする高周波
誘導加熱装置。3. A high-frequency induction heating coil arranged corresponding to a region to be heated of an object to be heated, and a high-frequency power supply configured to supply a constant high-frequency output current to the high-frequency induction heating coil. (C) detecting means for detecting an amount of change in at least one of a high-frequency output voltage and an oscillation frequency output from the high-frequency power supply;
(D) a heating coil for adjusting the relative distance between the high-frequency induction heating coil and the object to be heated by moving the high-frequency induction heating coil with respect to the object to be heated based on the amount of change detected by the detection means; And moving means, respectively,
The high-frequency induction heating apparatus is characterized in that the high-frequency induction heating coil is always arranged at a position that maintains an appropriate space for heating with respect to the object to be heated by the heating coil moving means.
置される高周波誘導加熱コイルと、（ｂ） 前記高周波
誘導加熱コイルに一定の高周波出力電力を供給するよう
に構成された高周波電源と、（ｃ） 前記高周波電源か
ら出力される高周波出力電圧、高周波出力電流、前記高
周波電源の発振周波数、及び前記高周波誘導加熱コイル
に流れる高周波電流のうちの少なくとも１つについての
変化量を検出する検出手段と、（ｄ） 前記検出手段に
て検出された変化量に基づいて、前記高周波誘導加熱コ
イルを被加熱体に対して移動させて前記高周波誘導加熱
コイルと被加熱体との相対距離を調整する加熱コイル移
動手段と、をそれぞれ備え、前記加熱コイル移動手段に
より前記高周波誘導加熱コイルを前記被加熱体に対して
加熱に適正な間隔を保持する位置に常に配置するように
したことを特徴とする高周波誘導加熱装置。4. A high-frequency induction heating coil arranged corresponding to a region to be heated of an object to be heated, and (b) a high-frequency power supply configured to supply constant high-frequency output power to the high-frequency induction heating coil. And (c) detecting a change amount of at least one of a high-frequency output voltage, a high-frequency output current, an oscillation frequency of the high-frequency power supply, and a high-frequency current flowing through the high-frequency induction heating coil output from the high-frequency power supply. Detecting means for moving the high-frequency induction heating coil with respect to the object to be heated, based on the amount of change detected by the detecting means, to determine a relative distance between the high-frequency induction heating coil and the object to be heated; Heating coil moving means for adjusting, and the heating coil moving means holds the high-frequency induction heating coil at an appropriate distance for heating the object to be heated. A high-frequency induction heating device, which is always arranged at a position where the heat is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001117646A JP4644379B2 (en) | 2001-04-17 | 2001-04-17 | High frequency induction heating method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001117646A JP4644379B2 (en) | 2001-04-17 | 2001-04-17 | High frequency induction heating method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002313544A true JP2002313544A (en) | 2002-10-25 |
| JP4644379B2 JP4644379B2 (en) | 2011-03-02 |
Family
ID=18968159
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001117646A Expired - Fee Related JP4644379B2 (en) | 2001-04-17 | 2001-04-17 | High frequency induction heating method and apparatus |
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| Country | Link |
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| JP (1) | JP4644379B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011052310A (en) * | 2009-09-04 | 2011-03-17 | Delta Kogyo Co Ltd | Method for induction-hardening tabular component |
| JP2013138036A (en) * | 2007-09-13 | 2013-07-11 | Neturen Co Ltd | Method of determining positional relation between heating coil and work |
| CN117467837A (en) * | 2023-12-27 | 2024-01-30 | 季华实验室 | Robot tail end control method and device, electronic equipment and storage medium |
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|---|---|---|---|---|
| JPS5528311A (en) * | 1978-08-16 | 1980-02-28 | Nippon Steel Corp | Controlling method for heating for edge of metallic piece |
| JPS59134588A (en) * | 1983-01-24 | 1984-08-02 | 新日本製鐵株式会社 | Method of inductively heating metal piece side terminal |
| JPH0362495A (en) * | 1989-07-31 | 1991-03-18 | Kawasaki Steel Corp | Induction heating device of steel plate edge |
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| JPH07146077A (en) * | 1993-11-25 | 1995-06-06 | Fuji Electric Co Ltd | Lifting melting apparatus |
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2001
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5528311A (en) * | 1978-08-16 | 1980-02-28 | Nippon Steel Corp | Controlling method for heating for edge of metallic piece |
| JPS59134588A (en) * | 1983-01-24 | 1984-08-02 | 新日本製鐵株式会社 | Method of inductively heating metal piece side terminal |
| JPH0362495A (en) * | 1989-07-31 | 1991-03-18 | Kawasaki Steel Corp | Induction heating device of steel plate edge |
| JPH05299164A (en) * | 1992-04-22 | 1993-11-12 | Sumitomo Metal Ind Ltd | Induction heating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013138036A (en) * | 2007-09-13 | 2013-07-11 | Neturen Co Ltd | Method of determining positional relation between heating coil and work |
| JP2011052310A (en) * | 2009-09-04 | 2011-03-17 | Delta Kogyo Co Ltd | Method for induction-hardening tabular component |
| CN117467837A (en) * | 2023-12-27 | 2024-01-30 | 季华实验室 | Robot tail end control method and device, electronic equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4644379B2 (en) | 2011-03-02 |
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