JP2002343544A - High frequency moving heating method - Google Patents

High frequency moving heating method

Info

Publication number
JP2002343544A
JP2002343544A JP2001140971A JP2001140971A JP2002343544A JP 2002343544 A JP2002343544 A JP 2002343544A JP 2001140971 A JP2001140971 A JP 2001140971A JP 2001140971 A JP2001140971 A JP 2001140971A JP 2002343544 A JP2002343544 A JP 2002343544A
Authority
JP
Japan
Prior art keywords
heated
frequency induction
induction heating
heating coil
distance
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
Application number
JP2001140971A
Other languages
Japanese (ja)
Inventor
Keiichi Kubo
啓一 久保
Isamu Haneda
勇 羽太
Yoshiki Kariya
芳樹 狩谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kawasaki Heavy Industries Ltd
DKK Co Ltd
Original Assignee
Denki Kogyo Co Ltd
Kawasaki Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Denki Kogyo Co Ltd, Kawasaki Heavy Industries Ltd filed Critical Denki Kogyo Co Ltd
Priority to JP2001140971A priority Critical patent/JP2002343544A/en
Publication of JP2002343544A publication Critical patent/JP2002343544A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Landscapes

  • General Induction Heating (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a high frequency induction heating method and device that can perform high frequency induction heating without requiring skill of the operator, even if the heating region of the heated object is made in any shape. SOLUTION: An industrial robot 14 is used as a means of moving one or both of the high frequency induction heating coil and the heated body 20 (for example, a long steel plate component of a body panel 12 or the like). By teaching the industrial robot 14, the space between the high frequency induction heating coil 4 and the heating object part of the heated body 20 is always held at an appropriate distance d1 without making contact the high frequency induction heating coil 4 and the heated body 20.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、被加熱体と高周波
誘導加熱コイルとを相対的に移動させて高周波誘導加熱
するようにした高周波移動加熱方法に関し、例えば自動
車のボディパネル等のように、平面或いは非平面でかつ
長手方向に広がる加熱対象部を有する鋼板部品(特に、
薄板長尺状鋼板部品)を高周波誘導加熱するのに用いて
好適なものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency induction heating method in which an object to be heated and a high-frequency induction heating coil are relatively moved to perform high-frequency induction heating. A flat or non-planar steel plate component having a heating target portion extending in the longitudinal direction (particularly,
It is suitable for use in high-frequency induction heating of a long and thin steel plate part.

【0002】[0002]

【従来の技術】従来より、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が実施さ
れている。このような高周波誘導加熱方法は、平面或い
は非平面でかつ長手方向に延びる加熱対象部を有する被
加熱体(例えば、薄板から成る自動車のボディーパネル
等の鋼板部品)を高周波移動加熱するために広く用いら
れている。
2. Description of the Related Art Conventionally, a high-frequency induction heating coil and a body to be heated are relatively spaced from each other without contacting the high-frequency induction heating coil and the body to be heated. High frequency induction heating methods have been implemented. Such a high-frequency induction heating method is widely used for high-frequency moving heating of an object to be heated (for example, a steel plate component such as a body panel of an automobile made of a thin plate) having a flat or non-planar and a heating target portion extending in a longitudinal direction. Used.

【0003】特に、被加熱体の加熱対象部(加熱対象領
域)が非平面であるような場合、それを焼入処理のため
に高周波誘導加熱する方法としては、加熱対象部の形状
に合わせた形状の高周波誘導加熱コイルを被加熱体の加
熱対象部に対応するように固定配置し、高周波誘導加熱
コイルと被加熱体とを相対移動させることなく一度に高
周波誘導加熱するようないわゆる一発加熱方法がある。
[0003] In particular, in the case where the object to be heated (area to be heated) of the object to be heated is non-planar, a method of performing high-frequency induction heating for quenching is based on the shape of the object to be heated. A so-called one-shot heating in which a high-frequency induction heating coil with a shape is fixedly arranged so as to correspond to the target to be heated of the object to be heated, and the high-frequency induction heating coil and the object to be heated are heated at a time without relative movement. There is a way.

【0004】しかし、一発加熱方法の場合には、加熱す
べき領域が広くなるため、高周波誘導加熱中における被
加熱体(鋼板部品)の変形が大きくなってこの被加熱体
に高周波誘導加熱コイルが接触するおそれがある。ま
た、焼入処理後の変形が大きくなる不具合もある。
However, in the case of the one-shot heating method, since the area to be heated is widened, the deformation of the object to be heated (steel plate part) during the high-frequency induction heating increases, and the high-frequency induction heating coil May come into contact. In addition, there is a problem that the deformation after the quenching process is increased.

【0005】また、別の高周波誘導加熱方法としては、
鋼板部品の加熱対象部に或る距離をもって高周波誘導加
熱コイル及び冷却液噴射ジャケットを配置し、高周波誘
導加熱コイル及び冷却液噴射ジャケットを加熱対象部に
沿って移動させながら高周波誘導加熱コイルにて加熱対
象部を高周波誘導加熱するようにしたいわゆる高周波移
動加熱方法がある。この場合、高周波誘導加熱コイルと
被加熱体の加熱対象部との間の間隔(相対距離)を目視
によって確認しながら、手動で高周波誘導加熱コイルと
被加熱体との間の間隔を加熱に適正な距離に保持する調
整を行なうようにしている。
[0005] Another high-frequency induction heating method is as follows.
A high-frequency induction heating coil and a cooling liquid injection jacket are arranged at a certain distance in the heating target part of the steel plate part, and the high-frequency induction heating coil and the cooling liquid injection jacket are heated by the high-frequency induction heating coil while moving along the heating target part. There is a so-called high-frequency transfer heating method in which a target portion is subjected to high-frequency induction heating. In this case, the distance between the high-frequency induction heating coil and the object to be heated is manually checked while visually confirming the distance (relative distance) between the high-frequency induction heating coil and the object to be heated. Adjustments are made to keep the distance at a minimum.

【0006】しかし、移動加熱を手動にて行う場合に
は、高周波誘導加熱コイルと、加熱に伴って変形してく
る被加熱体との間の距離を常に一定に保持することは難
しく、目視でその距離を確認する場合は作業者の熟練を
要し、特に加熱対象部が非平面である場合には熟練者で
あってもその距離を常に一定に保持することは非常に困
難である。すなわち、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部において高周波誘
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。
However, when the moving heating is performed manually, it is difficult to always maintain a constant distance between the high-frequency induction heating coil and the object to be heated which is deformed by the heating. In order to check the distance, the skill of the operator is required. Particularly, when the object to be heated is non-planar, it is very difficult even for a skilled person to keep the distance constant. That is, the operator must be a skilled operator to perform the visual adjustment, and even if the expert performs the distance adjustment (interval adjustment) as described above,
In reality, it is extremely difficult to accurately adjust to the proper distance. In particular, when the relative movement speed between the high-frequency induction heating coil and the object to be heated is increased in the portion to be heated of the object to be heated, it becomes difficult for even a skilled person to adjust the distance.

【0007】また、さらに別の高周波移動加熱方法とし
ては、高周波誘導加熱コイルの近傍に高周波誘導加熱コ
イルと被加熱体の加熱対象部との間の距離を測定する変
位センサを配置し、この変位センサにて計測された測定
値(検出値)に基づいて高周波誘導加熱コイルと被加熱
体の加熱対象部との間の距離を適正に調整しながら高周
波誘導加熱を行なうようなセンサ利用方式の高周波移動
加熱方法がある。
Further, as another high-frequency moving heating method, a displacement sensor for measuring a distance between the high-frequency induction heating coil and a portion to be heated of the object to be heated is disposed near the high-frequency induction heating coil. A sensor-based high-frequency device that performs high-frequency induction heating while appropriately adjusting the distance between the high-frequency induction heating coil and the heating target portion based on the measurement value (detection value) measured by the sensor. There is a moving heating method.

【0008】図4及び図5は、従来のセンサ利用方式の
高周波移動加熱方法を施行するのに用いられる高周波誘
導加熱装置(焼入装置)1を示すものである。本装置1
は、多関節ロボット等の産業用ロボット(図示しない)
を使用したものであって、産業用ロボットのアームHの
先端に設けられた固定台2と、この固定台2に固定され
た小型変成器3と、固定台2に取付けられて小型変成器
3に接続された高周波誘導加熱コイル4と、小型変成器
3に電源を供給するためのフレキシブル水冷ケーブル5
とをそれぞれ有しており、上述の固定台2に変位センサ
6及び冷却液噴射ジャケット7がそれぞれ取付けられて
いる。そして、水冷液噴射ジャケット7には冷却液供給
用ホース8を介して冷却液(焼入水)が供給され、冷却
液が冷却液噴射ジャケット7から加熱状態の被加熱体9
に向けて噴射されるように構成されている。
FIGS. 4 and 5 show a high-frequency induction heating apparatus (quenching apparatus) 1 used for implementing a conventional high-frequency moving heating method using a sensor. This device 1
Is an industrial robot such as an articulated robot (not shown)
, A fixed base 2 provided at the tip of the arm H of the industrial robot, a small transformer 3 fixed to the fixed base 2, and a small transformer 3 mounted on the fixed base 2. High-frequency induction heating coil 4 connected to the power supply and a flexible water-cooling cable 5 for supplying power to the small transformer 3
And a displacement sensor 6 and a cooling liquid jet jacket 7 are respectively attached to the fixed base 2 described above. Then, a coolant (quenching water) is supplied to the water-cooled liquid spray jacket 7 through a coolant supply hose 8, and the coolant is supplied from the coolant spray jacket 7 to the heated object 9.
It is constituted so that it may be injected toward.

【0009】なお、上述の変位センサ6は、被加熱体9
(自動車のボディーパネル等)に接触した状態で使用さ
れる接触式のものであって(図6〜図8参照)、高周波
誘導加熱コイル4の近傍位置に対応配置されている。ま
た、上述の高周波誘導加熱コイル4には、図6〜図8に
示すように、加熱効率を向上させるために磁性材料10
が配置されている。
The above-mentioned displacement sensor 6 is provided with
(See FIG. 6 to FIG. 8), which is used in a state of being in contact with an automobile body panel or the like (see FIGS. 6 to 8), and is arranged corresponding to a position near the high-frequency induction heating coil 4. As shown in FIGS. 6 to 8, the high-frequency induction heating coil 4 has a magnetic material 10 to improve the heating efficiency.
Is arranged.

【0010】かくして、上述の高周波誘導加熱装置2を
用いて高周波移動加熱を行なう際には、高周波誘導加熱
コイル4の近傍に配置された変位センサ6にて高周波誘
導加熱コイル4と被加熱体9との間の距離を検知(測
定)し、その検知信号を高周波誘導加熱コイル4と被加
熱体9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 moving heating using the high-frequency induction heating device 2 described above, the high-frequency induction heating coil 4 and the object 9 to be heated are detected by the displacement sensor 6 disposed near the high-frequency induction heating coil 4. By detecting (measuring) the distance between the high-frequency induction heating coil 4 and the object 9 to be heated, the detection signal is fed back to a mechanism (not shown) for relatively changing the distance between the high-frequency induction heating coil 4 and the object 9 to be heated. High-frequency induction heating is performed while adjusting the distance.

【0011】[0011]

【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6を使用して高周波誘導加熱コイル4と
被加熱体9との間の距離を調整するようにした従来の高
周波誘導加熱方法では、変位センサ6と高周波誘導加熱
コイル4との相対的な位置関係が被加熱体9の加熱対象
部(被加熱面)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4と被加熱体9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 method in which the distance between the high-frequency induction heating coil 4 and the object 9 to be heated is adjusted by using the displacement sensor 6 as described above, Since the relative positional relationship between the displacement sensor 6 and the high-frequency induction heating coil 4 fluctuates according to the shape of the portion to be heated (the surface to be heated) of the object 9 to be heated, the high-frequency induction heating coil 4 and the object to be heated are varied. 9 cannot be accurately detected, and therefore the distance may not be properly adjusted.

【0012】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6に示す如く、被加熱体9の加熱
対象部が平坦面S1 である場合、変位センサ6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4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4と
被加熱体9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6の先端の接触ローラ6aまでの
距離すなわち前記基準面P0 から被加熱体9と前記接触
ローラ6aとの接触点Mまでの距離をL1 とすると、被
加熱体9の加熱対象部(被加熱面)が平坦面S1 である
ことから、d1 =L1 −L0 となる。そこで、被加熱体
9の加熱対象部が平坦面S1 である場合には、基準面P
0 から変位センサ6の先端の接触ローラ6aまでの距離
がL1 の時に高周波誘導加熱コイル4と被加熱体9との
間の距離が適正距離(適正値)d1 となるように図外の
産業用ロボットを作動させるように設定することによ
り、変位センサ6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4と被加熱体9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。
This point will be described in detail below. First, as shown in FIG. 6, to set the reference plane (flat surface) P 0 during when the heating target portion is a flat surface S 1, the displacement sensor 6 performs distance measurement object to be heated 9, the reference plane The distance from P 0 to the reference point T of the high-frequency induction heating coil 4 is L 0 (constant value), the appropriate distance for heating between the high-frequency induction heating coil 4 and the object 9 is d 1 , from distance or the reference plane P 0 from P 0 to the contact roller 6a at the tip of the displacement sensor 6 and the distance to the contact point M between the contact roller 6a and the object to be heated 9, L 1, of the object to be heated 9 since the heating target portion (heated surface) is a flat surface S 1, a d 1 = L 1 -L 0. Therefore, when the heating target portion of the object to be heated 9 is a flat surface S 1, the reference plane P
0 from the distance to the contact roller 6a at the tip of the displacement sensor 6 is not shown so that the distance between the high-frequency induction heating coil 4 and the body to be heated 9 is proper distance (proper value) d 1 when L 1 By setting the industrial robot to operate, the distance between the high-frequency induction heating coil 4 and the object to be heated 9 is adjusted and controlled to an appropriate distance d 1 based on the result of the distance measurement by the displacement sensor 6. Is possible.

【0013】しかし、図7に示す如く被加熱体9の加熱
対象部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7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4が被加熱体9の円弧形状面S2
適正距離d1 を隔てて配置されると共に変位センサ6の
先端の接触ローラ6a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4と
被加熱体9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9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6の先端の接触ローラ6aまでの距離L2 が前記
距離L1よりも大きくなる(L2 >L1 )。従って、図
6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4と被加熱体9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4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4を被加熱体9
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4と
被加熱体9の円弧形状面S2 との間の距離を適正距離d
1 に保持することができなくなる。
However, as shown in FIG. 7, if the object to be heated of the object to be heated 9 is a convex arc-shaped surface S 2 , the distance adjustment control is performed under the above conditions. Causes the following problems. Incidentally, the state shown in FIG. 7 is a state that has not started a high-frequency induction heating, the high frequency induction heating coil 4 is arranged at a proper distance d 1 to the arc-shaped surface S 2 of the object to be heated 9 contact roller 6a at the tip of the displacement sensor 6 is in the state of the time of the contact with the arcuate surface S 2. In this case, even if the distance between the high-frequency induction heating coil 4 and the area to be heated of the object to be heated 9 (arc-shaped surface S 2 ) is the proper distance d 1 , the area to be heated of the object to be heated 9 is arc-shaped. because the surface S 2, the distance L 2 from the reference plane P 0 to the contact roller 6a at the tip of the displacement sensor 6 is greater than the distance L 1 (L 2> L 1 ). Therefore, as compared with the case of FIG. 6, measurement (detection) is performed as a state in which the interval between the high-frequency induction heating coil 4 and the object to be heated 9 is separated by a distance corresponding to (L 2 −L 1 ). That is, the high-frequency induction heating coil 4 is moved to the object 9 to be heated even though the high-frequency induction heating coil 4 is arranged at an appropriate position.
, And the distance between them is set to be smaller than the appropriate distance d 1 . Thus, in such a case, the appropriate distance d the distance between the high-frequency induction heating coil 4 and the arcuate surface S 2 of the object to be heated 9
It cannot be held at 1 .

【0014】さらに、図7に示す状態にした後に高周波
移動加熱を開始すると、図8に示す如く被加熱体9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4に接近し、高周波誘導加熱コイル4と被加熱
体9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8において、破線Kは変
形前における被加熱体9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9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4が被加熱
体9に接触してしまうおそれがある。
Furthermore, when starting the high-frequency mobile heating after the state shown in FIG. 7, arcuate surfaces S 2 of the object to be heated 9 as shown in FIG. 8 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 4 by the amount of change Z, and the distance d 1 ′ between the high-frequency induction heating coil 4 and the arc-shaped surface S 2 of the object 9 is d 1 ′ = d
1− Z <d 1 . In FIG. 8, a broken line K indicates the shape of the heated body 9 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 9, or high-frequency induction heating coil 4 is heated body 9 may come into contact.

【0015】また、図示を省略したが、被加熱体9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4が被加熱体9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 9 is a concave arc-shaped surface,
A completely opposite phenomenon occurs. In this case, it becomes possible to high-frequency induction heating coil 4 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 9 and therefore high-frequency induction heating is sufficiently No, and the heating efficiency is reduced.

【0016】本発明は、上述のような種々の不具合に鑑
みて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移動加熱を行なうことができ
るような高周波移動加熱方法を提供することにある。
The present invention has been made in view of the above-mentioned various problems, and has as its object the purpose of requiring any skill of an operator and the shape of the object to be heated of the object to be heated in any shape. It is an object of the present invention to provide a high-frequency moving heating method capable of appropriately performing high-frequency moving heating.

【0017】[0017]

【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、被加熱体と高周波誘導加熱コイルと
を相対的に移動させて高周波誘導加熱するようにした高
周波移動加熱方法において、前記高周波誘導加熱コイル
及び前記被加熱体の一方或いは両方を移動させる手段と
して産業用ロボットを用い、前記産業用ロボットをティ
ーチングすることにより、前記高周波誘導加熱コイルと
前記被加熱体の加熱対象部との間の間隔を、前記高周波
誘導加熱コイルと前記被加熱体とを接触させることな
く、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、前記産業用ロボットのティーチング
において前記加熱に適正な距離に所定の距離量を加え、
高周波誘導加熱中における前記高周波誘導加熱コイルと
前記被加熱体の加熱対象部との間の間隔を適正な距離を
保つように、前記産業用ロボットを作動させるようにし
ている。また、本発明では、前記所定の距離量は、高周
波誘導加熱(及び焼入冷却)に伴って前記被加熱体の加
熱対象部の各部に発生する変形の変化量であるようにし
ている。また、本発明では、前記被加熱体を固定し、前
記産業用ロボットにより前記高周波誘導加熱コイルを前
記被加熱体の加熱対象部に沿って移動させるようにして
いる。また、本発明では、前記変化量を理論式、実験
式、或いはデータベースに基づいて自動的に設定し、こ
の設定した変化量を産業用ロボットの動作に反映させる
ようにしている。
In order to achieve the above-mentioned object, the present invention provides a high-frequency moving heating method in which an object to be heated and a high-frequency induction heating coil are relatively moved to perform high-frequency induction heating. Using an industrial robot as a means for moving one or both of the high-frequency induction heating coil and the object to be heated, and teaching the industrial robot to heat the high-frequency induction heating coil and the object to be heated of the object to be heated Is always kept at an appropriate distance for heating without bringing the high-frequency induction heating coil and the object to be heated into contact with each other.
In the present invention, in the teaching of the industrial robot, a predetermined distance amount is added to an appropriate distance for the heating,
The industrial robot is operated so as to keep an appropriate distance between the high-frequency induction heating coil and the portion to be heated of the object to be heated during the high-frequency induction heating. Further, in the present invention, the predetermined distance amount is a change amount of a deformation generated in each portion of the heating target portion of the object to be heated due to high-frequency induction heating (and quenching and cooling). In the present invention, the object to be heated is fixed, and the high-frequency induction heating coil is moved by the industrial robot along a portion to be heated of the object to be heated. Further, in the present invention, the change amount is automatically set based on a theoretical formula, an experimental formula, or a database, and the set change amount is reflected on the operation of the industrial robot.

【0018】[0018]

【発明の実施の形態】以下、本発明の一実施形態につい
て図1〜図3を参照して説明する。なお、図1〜図3に
おいて、図4〜図8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。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3, the same parts as those in FIGS. 4 to 8 are denoted by the same reference numerals, and redundant description will be omitted.

【0019】図1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移動加熱装置(高周波移
動焼入装置)11を示すものである。図1に示すよう
に、本装置11は、長尺状鋼板部品の一例である自動車
のボディーパネル12を被加熱体(加熱対象)とし、載
置治具13上に固定されたボディーパネル12に対して
高周波誘導加熱コイル4を相対的に移動させることによ
り、ボディーパネル12の所要の加熱対象部を焼入処理
等のために高周波誘導加熱する装置である。また、高周
波誘導加熱コイル4の移動手段として産業用ロボット1
4(例えば、多関節ロボット)が用いられており、この
産業用ロボット14を後に詳述する如くティーチングす
ることにより、高周波誘導加熱コイル4とボディパネル
12の加熱対象部との間の間隔を、高周波誘導加熱コイ
ル4とボディパネル12とを接触させることなく、加熱
に適正な距離(適正間隔)に保持するようにしている。
FIG. 1 shows a high-frequency moving heating device (high-frequency moving quenching device) 11 for performing a high-frequency induction heating method according to one embodiment of the present invention. As shown in FIG. 1, the present apparatus 11 uses a body panel 12 of an automobile, which is an example of a long steel plate part, as a body to be heated (an object to be heated) and fixes the body panel 12 fixed on a mounting jig 13. On the other hand, by moving the high-frequency induction heating coil 4 relatively, the high-frequency induction heating is performed for a required heating target portion of the body panel 12 for quenching processing or the like. In addition, as a means for moving the high-frequency induction heating coil 4, the industrial robot 1
4 (for example, an articulated robot) is used. By teaching the industrial robot 14 as described in detail later, the distance between the high-frequency induction heating coil 4 and the object to be heated of the body panel 12 is reduced. The high-frequency induction heating coil 4 and the body panel 12 are kept at an appropriate distance (appropriate interval) for heating without contacting each other.

【0020】産業用ロボット14のアーム14aの先端
部分には固定台2が取付られ、この固定台2に小型変成
器3が取付けられている。そして、小型変成器3は、産
業用ロボット14のアーム14aの動きを妨げないよう
なフレキシブル水冷ケーブル5を介して高周波電源15
に接続されると共に、固定台2に取付けられた高周波誘
導加熱コイル4が小型変成器3に接続されている。ま
た、上述の高周波誘導誘導加熱コイル4には、加熱効率
を向上させるために磁性材料10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12を載置するた
めの載置治具13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17が固定台2に沿って配設されると共に、こ
の焼入水供給用ホース17を介して供給される焼入冷却
水をボディーパネル12の加熱部分に向けて噴射する冷
却液噴射ジャケット18が固定台2に取付けられて高周
波誘導加熱コイル4の近傍箇所に配置されている。
A fixed base 2 is mounted on the tip of the arm 14a of the industrial robot 14, and a small transformer 3 is mounted on the fixed base 2. The small transformer 3 is connected to the high-frequency power supply 15 via a flexible water-cooled cable 5 which does not hinder the movement of the arm 14a of the industrial robot 14.
And a high-frequency induction heating coil 4 attached to the fixed base 2 is connected to the small transformer 3. Further, a magnetic material 10 is attached to the high-frequency induction heating coil 4 to improve the heating efficiency.
On the other hand, a mounting jig 13 for mounting the body panel 12, which is a body to be heated, is fixed to the floor surface with anchor bolts or the like. Further, as shown in FIG. 1, a quenching cooling water supply hose 17 is disposed along the fixed base 2 and the quenching cooling water supplied through the quenching water supply hose 17 is supplied to the body panel. A cooling liquid jet jacket 18 for jetting toward the heating portion 12 is attached to the fixed base 2 and is disposed in the vicinity of the high-frequency induction heating coil 4.

【0021】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4が、載置治具1
3上に載置固定されたボディーパネル12の加熱対象部
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産業用ロボット14によ
り移動されて高周波移動加熱が行なわれ、しかる後にそ
の加熱部分に冷却液噴射ジャケット18から冷却液(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 4, which is energized by the high-frequency power supply 15, is mounted on the mounting jig 1.
As described later, the industrial robot 14 is moved from the start end to the end of the heating target area while always maintaining an appropriate interval with respect to the heating target portion of the body panel 12 mounted and fixed on the upper surface 3 to perform high-frequency moving heating. After that, a cooling liquid (quenching water) is injected from the cooling liquid injection jacket 18 to the heated portion to perform a quenching process.

【0022】図2(A)及び図3(A)は、産業用ロボ
ット14のティーチング時に高周波誘導加熱コイル4が
移動する軌跡(移動経路)を示している。なお、図2
(A)は、鋼板部品20(例えば、ボディーパネル12
等のような被加熱体)の加熱対象部が平面S1 である場
合を示し、図3(A)は鋼板部品20の加熱対象領域が
非平面(例えば、円弧面等)S2 の場合を示している。
また、図2及び図3において、矢印X及び矢印Yで示す
方向は、高周波誘導加熱コイル4の移動方向である。
FIGS. 2A and 3A show the locus (moving path) of the high-frequency induction heating coil 4 when the industrial robot 14 is teaching. Note that FIG.
(A) shows a steel plate part 20 (for example, a body panel 12).
Heat target portion of a body to be heated) as equal indicates when a plane S 1, 3 (A) is heated target area of the steel sheet part 20 is non-planar (e.g., the case of a circular arc surface or the like) S 2 Is shown.
2 and 3, the directions indicated by arrows X and Y are the moving directions of the high-frequency induction heating coil 4.

【0023】例えば、高周波誘導加熱コイル4を鋼板部
品20と一定の距離d1 を維持して移動させたい場合に
は、鋼板部品20の加熱対象部を図2(A)或いは図3
(A)に示す如く任意の間隔D1 、D2 ……Dn をもっ
てn個に分割し、(n+1)個(但し、n=1、2、3
……)の各点における高周波誘導加熱コイル4と鋼板部
品20の間の距離dn を、前記一定の距離d1 に加熱時
の熱膨張等による変化量βn を加えた値(加算値)とな
るように産業用ロボット14の動作設定を行なう。すな
わち、dn =d1 n として産業用ロボット14の動
作設定を行なう。なお、図2(A)及び図3(A)は、
それぞれ、鋼板部品20を高周波誘導加熱していない状
態を示しているが、この場合には鋼板部品20が熱膨張
等による変形を生じないため、高周波誘導加熱コイル4
と鋼板部品20の加熱対象領域の平面S1 との間の距離
が例えばd1 、d2 、d3 ……dn+1 と順次に変化して
しまう。しかし、実際に高周波誘導加熱しながら高周波
誘導加熱コイル4を鋼板部品20の加熱対象領域の平面
1 に沿って矢印X方向に移動する場合には、鋼板部品
20が図2(B)或いは図3(B)に示す如く破線Uで
示す状態から実線Wで示す状態に変形するが、既述のよ
うにその変化量βn を加味して産業用ロボット14のテ
ィーチングを行っているため、結果的に、高周波誘導加
熱コイル4と鋼板部品20との間の距離(間隔)は常に
1 (一定値)に保たれることとなる。
For example, when it is desired to move the high-frequency induction heating coil 4 while maintaining a constant distance d 1 from the steel plate part 20, the heating target portion of the steel plate part 20 is set to the position shown in FIG.
As shown in (A), the image is divided into n parts at arbitrary intervals D 1 , D 2 ... D n , and (n + 1) pieces (where n = 1, 2, 3
The distance d n between the high-frequency induction heating coil 4 and the steel sheet part 20 at each point of ...), was added a variation beta n due to thermal expansion or the like during the heating to the predetermined distance d 1 value (addition value) The operation setting of the industrial robot 14 is performed so that That is, the operation setting of the industrial robot 14 is performed with d n = d 1 + β n . Note that FIG. 2A and FIG.
Each shows a state in which the steel plate part 20 is not subjected to high-frequency induction heating. In this case, since the steel plate part 20 does not undergo deformation due to thermal expansion or the like, the high-frequency induction heating coil 4 is not used.
Thereby sequentially changing the distance, for example d 1, d 2, d 3 ...... d n + 1 between the plane S 1 of the heating target region of the steel sheet part 20 and. However, when the high-frequency induction heating coil 4 is moved in the direction of the arrow X along the plane S 1 of the heating target area of the steel plate component 20 while actually performing the high-frequency induction heating, the steel plate component 20 is moved to the position shown in FIG. Although the state shown by the broken line U is changed to the state shown by the solid line W as shown in FIG. 3B, the teaching of the industrial robot 14 is performed in consideration of the change amount β n as described above. Therefore, the distance (interval) between the high-frequency induction heating coil 4 and the steel plate component 20 is always kept at d 1 (constant value).

【0024】なお、鋼板部品20の加熱対象部を分割す
る間隔はD1 =D2 =……=Dn となるようにn等分し
てもよい。また、D1 ……Dn+1 の各値を適当に変化さ
せることにより任意の区間で高周波誘導加熱コイル4と
鋼板部品20との間の距離を変化させることができるた
め、加熱対象部内で自由に温度分布を設定することも可
能である。
The interval at which the portion to be heated of the steel plate part 20 is divided may be equally divided into n so that D 1 = D 2 =... = D n . Also, by appropriately changing each value of D 1 ... D n + 1 , the distance between the high-frequency induction heating coil 4 and the steel plate part 20 can be changed in an arbitrary section. It is also possible to freely set the temperature distribution.

【0025】そして、上述の変化量βn については、加
熱対象である鋼板部品20の材質形・形状等に応じて、
理論式或いは実験式として産業用ロボット14の動作用
プログラムの中に変化量βn の式を組み込むことによっ
て、産業用ロボット14の動作位置補正を自動的に実施
することができるようになっている。
The amount of change β n is determined according to the material type and shape of the steel plate component 20 to be heated.
By incorporating the expression of the change amount β n into the operation program of the industrial robot 14 as a theoretical expression or an experimental expression, the operation position of the industrial robot 14 can be automatically corrected. .

【0026】或いは、上述の変化量βn を加熱対象の鋼
板部品20毎にデータベースとして予め準備しておき、
産業用ロボット14がそのデータベースから必要データ
を取り出し、ロボット動作位置情報に反映して、産業用
ロボット14を自動的に作動させるように構成すること
も可能である。
Alternatively, the above-mentioned variation β n is prepared in advance as a database for each steel plate component 20 to be heated, and
The industrial robot 14 may be configured to take out necessary data from the database, reflect the data in the robot operating position information, and automatically operate the industrial robot 14.

【0027】なお、本実施形態においては、ボディーパ
ネル12を高周波移動加熱した直後に産業用ロボット1
4にて冷却液噴射ジャケット18を移動させながらボデ
ィーパネル12の加熱完了部に冷却液を噴射して焼入処
理を行なうようになっているが、この焼入冷却に伴って
ボディーパネル12の加熱対象部の各部に発生する変形
の変化量を上記と同様に所定の距離量に加味して産業用
ロボットを作動させ、これにより焼入冷却時においても
前記距離d1 を保つようにしている。従って、均一な焼
入冷却が可能である。
In this embodiment, immediately after the high-frequency moving heating of the body panel 12, the industrial robot 1
In step 4, the cooling liquid is sprayed onto the completed heating portion of the body panel 12 while moving the cooling liquid spray jacket 18 to perform the quenching process. the variation of deformation occurring in each part of the target portion to operate the industrial robot by adding a predetermined distance amounts in the same manner as described above, and to keep the distance d 1 even during thereby quenching cooling. Therefore, uniform quenching cooling is possible.

【0028】以上、本発明の一実施形態につき述べた
が、本発明はこ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更が可能であ
る。例えば、既述の実施形態では、ボディーパネル12
若しくは鋼板部品20を固定して高周波誘導加熱コイル
4を移動させるようにしたが、これとは逆に高周波誘導
加熱コイル4を固定してボディーパネル12若しくは鋼
板部品20を移動させる場合、或いはこれら両者を同時
に移動させる場合にも、本発明を適用することができ
る。また、被加熱体としては、鋼板部品20であるボデ
ィーパネル12に限らず、鋼板部品20以外の各種の部
品及び部材である場合にも本発明を適用可能である。
Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment.
Various modifications are possible based on the technical concept of the present invention. For example, in the embodiment described above, the body panel 12
Alternatively, the high-frequency induction heating coil 4 is moved while the steel plate part 20 is fixed. Conversely, when the high-frequency induction heating coil 4 is fixed and the body panel 12 or the steel plate part 20 is moved, or both. The present invention can also be applied to the case where are moved simultaneously. The object to be heated is not limited to the body panel 12 as the steel plate part 20, but the present invention is applicable to various parts and members other than the steel plate part 20.

【0029】[0029]

【発明の効果】請求項1に記載の本発明は、高周波誘導
加熱コイル及び被加熱体の一方或いは両方を移動させる
手段として産業用ロボットを用い、産業用ロボットをテ
ィーチングすることにより、高周波誘導加熱コイルと被
加熱体の加熱対象部との間の間隔を、高周波誘導加熱コ
イルと被加熱体とを接触させることなく、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、鋼板部
品の加熱対象部が平面の場合であっても非平面の場合で
あっても加熱対象部に対して適正間隔を保った状態で正
確に追従させることができ、これにより良好な高周波移
動加熱を容易に行なうことができる。従って、従来行っ
ていた手動による間隔維持操作等に要求されるような作
業者の熟練を全く必要とせず、また特に鋼板部品の加熱
対象部が非平面でかつ複雑な形状であっても、変位セン
サを使用した従来の高周波移動加熱方法の場合に較べて
より平易に(自動的に)均一加熱を行なうことが可能で
ある。また、変位センサを使用しないで済むため、その
分だけ産業用ロボット(多関節ロボット)のアームにか
かる荷重が少なくなることから、高周波誘導加熱コイル
及び被加熱体の一方又は両方を移動させるために用いる
産業用ロボットとしては小型のものでよくなる。さら
に、変位センサの測定値を産業用ロボットの動作に反映
させるための演算装置が不要になるため、高周波移動加
熱装置を安価に製作することが可能となる。
According to the first aspect of the present invention, an industrial robot is used as a means for moving one or both of the high-frequency induction heating coil and the object to be heated, and the high-frequency induction heating is performed by teaching the industrial robot. Since the distance between the coil and the object to be heated of the object to be heated is always kept at a proper distance for heating without contacting the high-frequency induction heating coil and the object to be heated, a steel plate part Whether the object to be heated is flat or non-planar, it can accurately follow the object to be heated while maintaining an appropriate distance, thereby facilitating good high-frequency moving heating. Can be performed. Therefore, there is no need for any skill of an operator, such as that required for the conventional manual operation of maintaining the gap, and even if the heating target portion of the steel plate part has a non-planar and complicated shape, Uniform heating can be performed more easily (automatically) than in the case of the conventional high-frequency moving heating method using a sensor. In addition, since a displacement sensor is not required, the load applied to the arm of the industrial robot (articulated robot) is reduced by that much, so that one or both of the high-frequency induction heating coil and the object to be heated are moved. A small industrial robot can be used. Further, since an arithmetic unit for reflecting the measured value of the displacement sensor in the operation of the industrial robot is not required, the high-frequency moving heating device can be manufactured at low cost.

【0030】また、請求項2に記載の本発明は、産業用
ロボットのティーチングにおいて加熱に適正な距離に所
定の距離量を加え、高周波誘導加熱中における高周波誘
導加熱コイルと被加熱体の加熱対象部との間の間隔を適
正な距離を保つように、産業用ロボットを作動させるよ
うにしたものであるから、前記所定の距離量を加熱条件
や、被加熱体である鋼板部品の材質及び鋼板部品の加熱
対象部の各部における熱容量等を考慮して適宜に選定す
ることにより、鋼板部品の加熱対象部に適応した高周波
移動加熱を自動的に行なうことができる。
According to a second aspect of the present invention, in the teaching of an industrial robot, a predetermined distance is added to an appropriate distance for heating, and the high-frequency induction heating coil and the object to be heated are heated during the high-frequency induction heating. Since the industrial robot is operated so as to maintain an appropriate distance between the parts and the parts, the predetermined distance amount is set to the heating condition, the material and the steel plate of the steel plate part to be heated. By appropriately selecting the heat capacity of each part of the part to be heated in consideration of the heat capacity and the like, it is possible to automatically perform high-frequency moving heating adapted to the part to be heated of the steel sheet part.

【0031】また、請求項3に記載の本発明は、所定の
距離量は、高周波誘導加熱に伴って被加熱体の加熱対象
部の各部に発生する変形の変化量であるようにしたもの
であるから、高周波誘導加熱コイルと鋼板部品の加熱対
象部との間の間隔を最適距離に常に維持することが可能
である。すなわち、産業用ロボットの動作設定を行う
際、被加熱体の加熱対象部が加熱中に変形する量の分だ
け予め高周波誘導加熱コイル又は被加熱体、或いは両方
が加熱対象部の変化量を吸収できるように産業用ロボッ
トの動作を設定することにより、高周波誘導加熱コイル
及び被加熱体の相対移動中において、常に、高周波誘導
加熱コイルと被加熱体との間の距離を最適距離(最適間
隔)に維持することが可能となる。
According to a third aspect of the present invention, the predetermined distance amount is a change amount of a deformation generated in each portion of a portion to be heated of the object to be heated due to the high frequency induction heating. Therefore, the interval between the high-frequency induction heating coil and the portion to be heated of the steel plate part can be always maintained at the optimum distance. In other words, when setting the operation of the industrial robot, the high-frequency induction heating coil and / or the object to be heated absorb the amount of change in the object to be heated in advance by the amount by which the object to be heated of the object to be heated is deformed during heating. By setting the operation of the industrial robot so that it can be performed, the distance between the high-frequency induction heating coil and the object to be heated is always set to the optimum distance (optimum distance) during the relative movement of the high-frequency induction heating coil and the object to be heated. Can be maintained.

【0032】また、請求項4に記載の本発明は、被加熱
体を固定し、前記産業用ロボットにより高周波誘導加熱
コイルを被加熱体の加熱対象部に沿って移動させるよう
にしたものであるから、被加熱体が例えば自動車のボデ
ィーパネル等のように大寸法でかつ重量が重い鋼板部品
等である場合には、それより小型でかつ軽量の高周波誘
導加熱コイルを移動させるようにした方が、産業用ロボ
ットが小型のもので済ますことができると共に、産業用
ロボットの動作制御を簡易に行なうことができる。
According to a fourth aspect of the present invention, the object to be heated is fixed, and the high-frequency induction heating coil is moved by the industrial robot along the portion to be heated of the object to be heated. Therefore, when the object to be heated is a large-sized and heavy steel plate part such as a body panel of an automobile, for example, it is better to move a smaller and lighter high-frequency induction heating coil. In addition, the size of the industrial robot can be reduced, and the operation control of the industrial robot can be easily performed.

【0033】また、請求項5に記載の本発明は、変化量
(鋼板部品の加熱対象部の加熱中における変化量)を理
論式、実験式、或いはデータベースに基づいて自動的に
設定し、この設定した変化量を産業用ロボットの動作に
反映させるようにしたものであるから、高周波誘導加熱
コイル又は被加熱体の一方或いは両方を移動させるため
の産業用ロボットの動作設定を簡略化することができ
る。
According to the present invention, the amount of change (the amount of change during heating of the portion to be heated of the steel plate part) is automatically set based on a theoretical formula, an empirical formula, or a database. Since the set amount of change is reflected in the operation of the industrial robot, the operation setting of the industrial robot for moving one or both of the high-frequency induction heating coil and the object to be heated can be simplified. it can.

【図面の簡単な説明】[Brief description of the drawings]

【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2(A)は、被加熱体の加熱対象部が平面で
ある場合に、高周波誘導加熱を行っていない状態の下
で、産業用ロボットに高周波誘導加熱コイルの移動軌跡
をティーチングする際の操作を説明するための説明図、
図2(B)は、被加熱体の平面状の加熱対象部を高周波
誘導加熱している際に、ティーチングされた産業用ロボ
ットにより高周波誘導加熱コイルを移動させたときの被
加熱体の加熱対象部に対する高周波誘導加熱コイルの移
動軌跡を示す説明図である。
FIG. 2 (A) is a diagram illustrating teaching of a movement locus of a high-frequency induction heating coil to an industrial robot in a state where high-frequency induction heating is not performed when a heating target portion of a heated object is a flat surface; Explanatory diagram for explaining the operation when performing
FIG. 2 (B) shows a heating target of the object to be heated when a high-frequency induction heating coil is moved by a taught industrial robot while a planar heating target portion of the object to be heated is subjected to high-frequency induction heating. FIG. 5 is an explanatory diagram showing a movement locus of a high-frequency induction heating coil with respect to a part.

【図3】図3(A)は、被加熱体の加熱対象部が非平面
(円弧状)である場合に、高周波誘導加熱を行っていな
い状態の下で、産業用ロボットに高周波誘導加熱コイル
の移動軌跡をティーチングする際の操作を説明するため
の説明図、図3(B)は、被加熱体の非平面状の加熱対
象部を高周波誘導加熱している際に、ティーチングされ
た産業用ロボットにより高周波誘導加熱コイルを移動さ
せたときの被加熱体の加熱対象部に対する高周波誘導加
熱コイルの移動軌跡を示す説明図である。
FIG. 3 (A) is a diagram illustrating a case where a high-frequency induction heating coil is applied to an industrial robot in a state where high-frequency induction heating is not performed when a target to be heated of a heated object is non-planar (arc-shaped). FIG. 3 (B) is an explanatory view for explaining an operation when teaching the movement locus of the object, and FIG. 3 (B) shows the industrial industrial teaching performed when the non-planar heating target portion of the object to be heated is subjected to high-frequency induction heating. It is explanatory drawing which shows the movement locus | trajectory of the high frequency induction heating coil with respect to the to-be-heated part of a to-be-heated body when moving a high frequency induction heating coil by a robot.

【図4】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. 4 is a front view of a conventional high-frequency induction heating device including a contact displacement sensor.

【図5】図6の高周波誘導加熱装置の側面図である。FIG. 5 is a side view of the high-frequency induction heating device of FIG. 6;

【図6】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. 6 is a side view showing an arrangement relationship among a heated object, a displacement sensor, and a high-frequency induction heating coil when the heated surface of the heated object is a flat surface.

【図7】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. 7 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 surface to be heated is a convex arc-shaped surface.

【図8】加熱開始後に被加熱体が熱膨張した状態を示す
図7と同様の側面図である。
FIG. 8 is a side view similar to FIG. 7, showing a state in which the object to be heated has thermally expanded after the start of heating.

【符号の説明】[Explanation of symbols]

4 高周波誘導加熱コイル 11 高周波誘導加熱装置 12 ボディーパネル(被加熱体) 14 産業用ロボット(多関節ロボット) 14a アーム 15 高周波電源 20 鋼板部品 d1 適正距離 βn 変化量4 high-frequency induction heating coil 11 high-frequency induction heating apparatus 12 body panel (heated body) 14 industrial robot (articulated robot) 14a Arm 15 high frequency power supply 20 steel sheet part d 1 proper distance beta n variation

───────────────────────────────────────────────────── フロントページの続き (72)発明者 羽太 勇 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 (72)発明者 狩谷 芳樹 東京都江東区南砂2丁目1番14号 川崎重 工業株式会社内 Fターム(参考) 3K059 AA09 AB20 AC37 AC63  ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Isamu Hata 3-3-1 Marunouchi, Chiyoda-ku, Tokyo Denki Kogyo Co., Ltd. (72) Inventor Yoshiki Kariya 2-1-1-14 Minamisuna, Koto-ku, Tokyo Kawasaki Heavy industry Co., Ltd. F term (reference) 3K059 AA09 AB20 AC37 AC63

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 被加熱体と高周波誘導加熱コイルとを相
対的に移動させて高周波誘導加熱するようにした高周波
移動加熱方法において、前記高周波誘導加熱コイル及び
前記被加熱体の一方或いは両方を移動させる手段として
産業用ロボットを用い、前記産業用ロボットをティーチ
ングすることにより、前記高周波誘導加熱コイルと前記
被加熱体の加熱対象部との間の間隔を、前記高周波誘導
加熱コイルと前記被加熱体とを接触させることなく、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
する高周波移動加熱方法。
In a high-frequency moving heating method in which a high frequency induction heating is performed by relatively moving an object to be heated and a high frequency induction heating coil, one or both of the high frequency induction heating coil and the object to be heated are moved. An industrial robot is used as a means for causing the high-frequency induction heating coil to be heated, and the interval between the high-frequency induction heating coil and the target to be heated of the object to be heated is increased by teaching the industrial robot. A high-frequency moving heating method characterized in that the heating is always maintained at an appropriate distance for heating without contact with the heater.
【請求項2】 前記産業用ロボットのティーチングにお
いて前記加熱に適正な距離に所定の距離量を加え、高周
波誘導加熱中における前記高周波誘導加熱コイルと前記
被加熱体の加熱対象部との間の間隔を適正な距離を保つ
ように、前記産業用ロボットを作動させるようにしたこ
とを特徴とする請求項1に記載の高周波移動加熱方法。
2. In the teaching of the industrial robot, a predetermined distance is added to an appropriate distance for the heating, and a distance between the high-frequency induction heating coil and a portion to be heated of the object to be heated during the high-frequency induction heating. 2. The high-frequency moving heating method according to claim 1, wherein the industrial robot is operated so as to maintain an appropriate distance.
【請求項3】 前記所定の距離量は、高周波誘導加熱に
伴って前記被加熱体の加熱対象部の各部に発生する変形
の変化量であることを特徴とする請求項2に記載の高周
波移動加熱方法。
3. The high-frequency movement according to claim 2, wherein the predetermined distance amount is a change amount of a deformation generated in each portion of the heating target portion of the object to be heated due to the high-frequency induction heating. Heating method.
【請求項4】 前記被加熱体を固定し、前記産業用ロボ
ットにより前記高周波誘導加熱コイルを前記被加熱体の
加熱対象部に沿って移動させることを特徴とする請求項
1乃至3の何れか1項に記載の高周波移動加熱方法。
4. The apparatus according to claim 1, wherein the object to be heated is fixed, and the high-frequency induction heating coil is moved by the industrial robot along a portion to be heated of the object to be heated. 2. The high-frequency transfer heating method according to claim 1.
【請求項5】 前記変化量を理論式、実験式、或いはデ
ータベースに基づいて自動的に設定し、この設定した変
化量を産業用ロボットの動作に反映させるようにしたこ
とを特徴とする請求項2乃至4の何れか1項に記載の高
周波移動加熱方法。
5. The method according to claim 1, wherein the change amount is automatically set based on a theoretical formula, an empirical formula, or a database, and the set change amount is reflected on the operation of the industrial robot. The high-frequency transfer heating method according to any one of items 2 to 4.
JP2001140971A 2001-05-11 2001-05-11 High frequency moving heating method Pending JP2002343544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001140971A JP2002343544A (en) 2001-05-11 2001-05-11 High frequency moving heating method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001140971A JP2002343544A (en) 2001-05-11 2001-05-11 High frequency moving heating method

Publications (1)

Publication Number Publication Date
JP2002343544A true JP2002343544A (en) 2002-11-29

Family

ID=18987489

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001140971A Pending JP2002343544A (en) 2001-05-11 2001-05-11 High frequency moving heating method

Country Status (1)

Country Link
JP (1) JP2002343544A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005058625A1 (en) * 2003-12-17 2005-06-30 Sumitomo Metal Industries Ltd. Metal tube for reinforcing vehicle body and member for reinforcing vehicle body using the same
JP2015140989A (en) * 2014-01-29 2015-08-03 富士電機株式会社 Coating and drying device and coating and drying method
JP2016001519A (en) * 2014-06-11 2016-01-07 富士電機株式会社 Paint drying apparatus and paint drying method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005058625A1 (en) * 2003-12-17 2005-06-30 Sumitomo Metal Industries Ltd. Metal tube for reinforcing vehicle body and member for reinforcing vehicle body using the same
JP2015140989A (en) * 2014-01-29 2015-08-03 富士電機株式会社 Coating and drying device and coating and drying method
JP2016001519A (en) * 2014-06-11 2016-01-07 富士電機株式会社 Paint drying apparatus and paint drying method

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