JP2007092094A - Induction hardening apparatus for metallic workpiece, and induction hardening method therefor - Google Patents
Induction hardening apparatus for metallic workpiece, and induction hardening method therefor Download PDFInfo
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- 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
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Abstract
Description
この発明は、金属製ワークの高周波焼き入れ装置および同焼き入れ方法に関する。 The present invention relates to an induction hardening apparatus and a quenching method for a metal workpiece.
例えば、板金を切断するための切断加工機の刃部に用いられる金属製ワークの製造工程では、三次元切削装置等により金属製のワークを三次元方向で切削加工した後、この金属製ワークに対して焼き入れ処理を施すことが行われている。 For example, in a manufacturing process of a metal workpiece used for a blade part of a cutting machine for cutting a sheet metal, a metal workpiece is cut in a three-dimensional direction by a three-dimensional cutting device or the like, and then the metal workpiece is cut into the metal workpiece. A quenching process is performed on the surface.
このような焼き入れ処理は、従来では、金属製ワークを切削加工した後、作業者がガスバーナを使用して金属製ワークの被加熱部位に火炎を放射して加熱することにより行われている。 Conventionally, such a quenching process is performed by cutting a metal workpiece and then an operator using a gas burner to radiate and heat a heated portion of the metal workpiece.
ところが、上記した従来のように、切削加工された金属製ワークをガスバーナで加熱して焼き入れ処理を施すと、加熱量のばらつきや人手による加熱位置のずれなどのために、前記金属製ワークに反りや捩れなどの歪み変形が発生しやすい傾向にある。このため、焼き入れ処理された後でも、再度、金属製ワークに対して整形加工などを施さなければならなかった。 However, as in the conventional case described above, when a metal work that has been machined is heated by a gas burner and subjected to a quenching process, due to variations in the amount of heating or manual heating position shift, There is a tendency that distortion deformation such as warping and twisting is likely to occur. For this reason, even after quenching, the metal workpiece has to be reshaped.
この発明は、上記実情に鑑みてなされたものであり、焼き入れ処理による金属製ワークの歪みの発生を極力抑制でき、しかも、生産性の向上を図ることができる金属製ワークの高周波焼き入れ装置および同焼き入れ方法を提供することを課題としている。 The present invention has been made in view of the above circumstances, and can suppress the occurrence of distortion of a metal workpiece due to a quenching process as much as possible, and can further improve the productivity. And providing a quenching method.
上記課題は、以下の手段によって解決される。
(1)誘導加熱用コイルヘッドを有する高周波誘導加熱装置と、前記誘導加熱用コイルヘッドを支持する支持手段と、前記支持手段が金属製ワークの焼き入れ対象部位に沿って相対移動するように、前記支持手段または金属製ワークの少なくとも一方を移動させる移動制御手段と、を備えたことを特徴とする金属製ワークの高周波焼き入れ装置。
(2)成形加工のための各種加工具を取り替え可能に保持する加工具用ホルダを有し、金属製ワークをその輪郭形状に沿って成形加工するための成形加工装置と、誘導加熱用コイルヘッドを有する高周波誘導加熱装置と、前記加工具用ホルダに保持された前記加工具が、前記金属製ワークの加工対象部位に沿って相対移動するように、前記加工具または金属製ワークの少なくとも一方を移動させる移動制御手段と、を備え、前記加工具用ホルダまたはその近傍に、前記高周波誘導加熱装置のコイルヘッドを取り外し可能に装着し、前記移動制御手段により前記コイルヘッドを前記ワークの焼き入れ対象部位に沿って相対移動させることにより、ワークの焼き入れ処理を実施することを特徴とする金属製ワークの高周波焼き入れ装置。
(3)前記高周波誘導加熱装置のコイルヘッドは、金属製ワークの複数の異なる被加熱部位の形状にそれぞれ適合する複数種のものが選択的に用いられる前項1または2に記載の金属製ワークの高周波焼き入れ装置。
(4)誘導加熱用コイルヘッドを有する高周波誘導加熱装置の前記誘導加熱用コイルヘッドを、支持手段に支持させ、前記支持手段が金属製ワークの焼き入れ対象部位に沿って相対移動するように、前記支持手段または金属製ワークの少なくとも一方を移動させることにより、ワークの焼き入れ処理を実施することを特徴とする金属製ワークの高周波焼き入れ方法。
(5)成形加工のための各種加工具を取り替え可能に保持する加工具用ホルダを有し、金属製ワークを成形加工する成形加工装置であって、前記加工具用ホルダに保持された前記加工具が、前記金属製ワークの加工対象部位に沿って相対移動するように、前記加工具または金属製ワークの少なくとも一方を移動させるものとなされた成形加工装置を用い、前記成形加工装置の加工具用ホルダまたはその近傍に、前記高周波誘導加熱装置のコイルヘッドを取り外し可能に装着し、前記コイルヘッドを前記ワークの焼き入れ対象部位に沿って相対移動させることにより、ワークの焼き入れ処理を実施することを特徴とする金属製ワークの高周波焼き入れ方法。
The above problem is solved by the following means.
(1) A high-frequency induction heating apparatus having an induction heating coil head, a support means for supporting the induction heating coil head, and the support means relatively move along a portion to be quenched of a metal workpiece. A metal work induction hardening apparatus comprising: a movement control means for moving at least one of the support means or the metal work.
(2) A forming apparatus for forming a metal workpiece along its contour shape, and a coil head for induction heating, which has a holder for a processing tool for holding various processing tools for forming in a replaceable manner. And at least one of the processing tool or the metal workpiece so that the processing tool held by the holder for the processing tool relatively moves along a portion to be processed of the metal workpiece. A movement control means for moving, the coil head of the high-frequency induction heating device is detachably mounted on or near the holder for the processing tool, and the coil head is subjected to quenching of the workpiece by the movement control means. A high-frequency quenching apparatus for a metal workpiece, wherein the workpiece is quenched by being relatively moved along a portion.
(3) The coil head of the high-frequency induction heating apparatus according to the preceding item 1 or 2, wherein a plurality of types of coil heads respectively adapted to the shapes of a plurality of different heated portions of the metal workpiece are selectively used. Induction hardening equipment.
(4) The induction heating coil head of the high frequency induction heating apparatus having the induction heating coil head is supported by a support means, and the support means is relatively moved along the quenching target portion of the metal workpiece. An induction hardening method for a metal workpiece, wherein the workpiece is quenched by moving at least one of the support means or the metal workpiece.
(5) A forming apparatus having a processing tool holder for holding various processing tools for forming processing in a replaceable manner, and for forming a metal workpiece, wherein the processing tool is held by the processing tool holder. Using a forming apparatus that moves at least one of the processing tool or the metal workpiece so that the tool relatively moves along the portion to be processed of the metal workpiece, the processing tool of the forming apparatus The coil head of the high-frequency induction heating apparatus is detachably mounted on the holder for the workpiece or in the vicinity thereof, and the workpiece is quenched by moving the coil head relative to the workpiece to be quenched. A method of induction hardening of a metal workpiece characterized by the above.
前項(1)に記載の発明によれば、誘導加熱用ヘッドを支持する支持手段を金属製ワークの焼き入れ対象部位に沿って相対移動させることにより、高周波焼き入れを行うから、焼き入れ処理を効率よく自動的にしかも必要部位のみに施すことができる。しかも、ガスバーナを使うものに比して加熱量のばらつきなどもなく、歪み変形などの発生のない良好な焼き入れ状態を得ることができる。 According to the invention described in the preceding item (1), since the support means for supporting the induction heating head is relatively moved along the part to be quenched of the metal workpiece, induction hardening is performed. It can be applied automatically and efficiently only to the necessary parts. In addition, it is possible to obtain a good quenching state in which there is no variation in the heating amount as compared with the case using a gas burner and no distortion deformation occurs.
前項(2)に記載の発明によれば、成形加工時に、成形加工装置が駆動されると、加工具ホルダに保持された切削刃などの加工具または金属製ワークの少なくとも一方が移動し、加工具が金属製ワークの加工対象部位に沿って相対移動し、前記金属製ワークが自動的に成形される。 According to the invention described in (2) above, when the forming apparatus is driven during forming, at least one of a processing tool such as a cutting blade or a metal work held by the processing tool holder moves, The tool relatively moves along the processing target portion of the metal workpiece, and the metal workpiece is automatically formed.
加工終了後、加工具を取り外しあるいは取り外すことなく、加工具ホルダまたはその近傍に高周波誘導加熱装置のコイルヘッドを装着し、コイルヘッドまたはワークを移動させる。 After finishing the processing, without removing or removing the processing tool, the coil head of the high-frequency induction heating device is attached to the processing tool holder or the vicinity thereof, and the coil head or the workpiece is moved.
これにより、コイルヘッドは金属製ワークの焼き入れ対象部位に沿って相対移動するから、コイルヘッドにより前記金属製ワークを加熱することにより、焼き入れ処理を効率よく自動的にしかも必要部位のみに施すことができる。 As a result, the coil head relatively moves along the part to be quenched of the metal workpiece, so that the metal workpiece is heated by the coil head and the quenching process is efficiently and automatically applied only to the necessary part. be able to.
また、この焼き入れ装置によれば、成形加工工程からそのまま焼き入れ工程に入ることができ、生産効率の向上が図れる。 Further, according to this quenching apparatus, the quenching process can be entered from the molding process as it is, and the production efficiency can be improved.
しかも、ガスバーナを使うものに比して加熱量のばらつきなどもなく、歪み変形などの発生のない良好な焼き入れ状態を得ることができる。 In addition, it is possible to obtain a good quenching state in which there is no variation in the heating amount as compared with the case using a gas burner and no distortion deformation occurs.
前項(3)に記載の発明によれば、金属製ワークの被加熱部の形状の違い、例えば直線辺部や湾曲辺部などの形状に適合するコイルヘッドを選択使用できるから、その部位の形状に沿ってコイルヘッドを移動させることができ、金属製ワークの被加熱部位に対して適正な誘導加熱を行うことができる。 According to the invention described in item (3) above, since the coil head suitable for the difference in the shape of the heated portion of the metal workpiece, for example, the shape of the straight side portion or the curved side portion can be selected and used, the shape of the portion Thus, the coil head can be moved along the line, and appropriate induction heating can be performed on the heated portion of the metal workpiece.
前項(4)に記載の発明によれば、焼き入れ処理を効率よく自動的にしかも必要部位のみに施すことができる。しかも、ガスバーナを使うものに比して加熱量のばらつきなどもなく、歪み変形などの発生のない良好な焼き入れ状態を得ることができる。 According to the invention described in the preceding item (4), the quenching process can be efficiently and automatically performed only on necessary portions. In addition, it is possible to obtain a good quenching state in which there is no variation in the heating amount as compared with the case using a gas burner and no distortion deformation occurs.
前項(5)に記載の発明によれば、成形加工終了後、加工具を取り外しあるいは取り外すことなく、加工具ホルダまたはその近傍に高周波誘導加熱装置のコイルヘッドを装着し、コイルヘッドまたはワークを移動させる。これにより、コイルヘッドは金属製ワークの焼き入れ対象部位に沿って相対移動するから、コイルヘッドにより前記金属製ワークを加熱することにより、焼き入れ処理を効率よく自動的にしかも必要部位のみに施すことができる。また、成形加工工程からそのまま焼き入れ工程に入ることができ、生産効率の向上が図れる。しかも、ガスバーナを使うものに比して加熱量のばらつきなどもなく、歪み変形などの発生のない良好な焼き入れ状態を得ることができる。 According to the invention described in the preceding item (5), after the molding process is completed, the coil head of the high-frequency induction heating device is mounted on or near the processing tool holder without removing or removing the processing tool, and the coil head or the workpiece is moved. Let As a result, the coil head relatively moves along the part to be quenched of the metal workpiece, so that the metal workpiece is heated by the coil head and the quenching process is efficiently and automatically applied only to the necessary part. be able to. Moreover, the quenching process can be entered as it is from the molding process, and the production efficiency can be improved. In addition, compared with those using a gas burner, there is no variation in the amount of heating, and it is possible to obtain a good quenching state without occurrence of distortion deformation.
以下、この発明の一実施形態を図面に基づいて説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
図1は、この発明の一実施形態に係る金属製ワークの高周波焼き入れ装置を示す概略全体斜視図である。この実施形態では、例えば、板金を切断するための切断加工機の刃部に用いられる金属製ワークに対して、成形加工装置により切削などの加工を行ったのち、この成形加工装置を利用して、高周波焼き入れを行う場合を示すものである。 FIG. 1 is a schematic overall perspective view showing an induction hardening apparatus for a metal workpiece according to an embodiment of the present invention. In this embodiment, for example, after a metal workpiece used for a blade part of a cutting machine for cutting a sheet metal is cut by a molding apparatus, the molding apparatus is used. This shows a case where induction hardening is performed.
図1において、この金属製ワークの高周波焼き入れ装置は、概ね、三次元用の成形加工装置1と、高周波誘導加熱装置2と、コイルヘッド交換用ステーション3と、高周波誘導加熱装置2における加熱コイルヘッド23を成形加工装置1に取り付けるコイルヘッド装着装置4とを備えている。 In FIG. 1, the induction hardening apparatus for a metal workpiece generally includes a three-dimensional forming apparatus 1, a high frequency induction heating apparatus 2, a coil head replacement station 3, and a heating coil in the high frequency induction heating apparatus 2. And a coil head mounting device 4 for attaching the head 23 to the molding apparatus 1.
前記成形加工装置1は、例えば、基台11上に支持されて、図示しない駆動装置によりX軸方向(前後方向)へ沿って往復移動可能な第1の可動台12と、第1の可動台12上に支持されて、図示しない駆動装置によりY軸方向(左右方向)へ沿って往復移動可能な第2の可動台13と、第2の可動台13上に支持されて、図示しない駆動装置によりZ軸方向(上下方向)へ沿って往復移動可能な第3の可動台14と、この第3の可動台14の先端に保持された加工機構部15とを備えている。 The molding apparatus 1 includes, for example, a first movable base 12 supported on a base 11 and capable of reciprocating along the X-axis direction (front-rear direction) by a driving device (not shown), and a first movable base. 12, a second movable base 13 that can be reciprocated along the Y-axis direction (left-right direction) by a driving device (not shown), and a driving device (not shown) supported on the second movable base 13. Is provided with a third movable base 14 that can reciprocate along the Z-axis direction (vertical direction), and a processing mechanism portion 15 held at the tip of the third movable base 14.
なお、11a,11aは前記基台11上に設けられて、第1の可動台12の移動をガイドするガイド部材、12a,12bは前記第1の可動台12上に設けられて、第2の可動台13の移動をガイドするガイド部材、13aは第2の可動台13に設けられて、第3の可動台14の移動をガイドするガイド溝部である。 In addition, 11a and 11a are provided on the said base 11, the guide member which guides the movement of the 1st movable stand 12, 12a and 12b are provided on the said 1st movable stand 12, and 2nd A guide member 13 a for guiding the movement of the movable table 13 is a guide groove provided on the second movable table 13 to guide the movement of the third movable table 14.
前記加工機構部15は、第3の可動台14の先端に保持された駆動部16と、前記第3の可動台14の先端側に駆動部16を介して保持された加工具ホルダ17と、この加工具ホルダ17に着脱可能に保持されて、金属製ワークWを成形加工する切削刃などの加工具18とを備えている。 The processing mechanism unit 15 includes a driving unit 16 held at the tip of the third movable table 14, a processing tool holder 17 held on the tip side of the third movable table 14 via the driving unit 16, A processing tool 18 such as a cutting blade for forming and processing the metal workpiece W is detachably held by the processing tool holder 17.
前記第1の可動台12、第2の可動台13および第3の可動台14の移動は、予め設定されたプログラムを実行するコンピュータからなる制御装置19によって制御され、これら稼働台12〜14を移動制御することにより、加工具18が、前記金属製ワークの輪郭形状に沿って移動し、金属製ワークWの上面、外周面などを三次元的に加工することが可能となっている。 The movement of the first movable table 12, the second movable table 13, and the third movable table 14 is controlled by a control device 19 including a computer that executes a preset program. By controlling the movement, the processing tool 18 moves along the contour shape of the metal workpiece, and the upper surface and outer peripheral surface of the metal workpiece W can be three-dimensionally processed.
勿論、この成形加工装置1は、上記のものに限定されるものではなく、例えば多関節ロボットなどを用いたものであってもよい。 Of course, the molding apparatus 1 is not limited to the above-described one, and for example, an articulated robot may be used.
また、加工具18を三次元方向に移動させることが絶対条件でもなく、ワークWによっては、二次元方向のみに移動させるようにしたものであってもよい。 Further, moving the processing tool 18 in the three-dimensional direction is not an absolute condition, and depending on the workpiece W, the processing tool 18 may be moved only in the two-dimensional direction.
さらにまた、前記加工具ホルダ17は、切削刃に限らず、研磨具、あるいはドリルなどの各種の加工具18を取り換え可能に保持することができるようになっている。つまり、この成形加工装置1は、金属製ワークWに対して切削加工する機能だけに限定されるものではない。 Furthermore, the processing tool holder 17 is not limited to a cutting blade, and can hold various processing tools 18 such as a polishing tool or a drill in a replaceable manner. That is, the forming apparatus 1 is not limited to the function of cutting the metal workpiece W.
前記高周波誘導加熱装置2は、図2および図3に示すように、成型加工装置1とは別に単独で使用可能なものであり、装置本体としての高周波発振部21と、この高周波発信部21のケースから引き出された複数、例えば3本のケーブル22(22A,22B,22C)と、これらケーブル22(22A,22B,22C)の各先端にそれぞれ設けられた手動操作可能な3個のコイルヘッド23(23A,23B,23C)とを備えている。 As shown in FIGS. 2 and 3, the high-frequency induction heating device 2 can be used independently of the molding apparatus 1, and includes a high-frequency oscillation unit 21 serving as a device main body, A plurality of, for example, three cables 22 (22A, 22B, 22C) drawn from the case, and three manually operable coil heads 23 provided at the respective ends of these cables 22 (22A, 22B, 22C). (23A, 23B, 23C).
前記高周波発信装置2の高周波発振部21内には、例えばLC高周波発振回路におけるコンデンサ部の他に、電源部、記憶装置(いずれも図示せず)などが収容されており、さらに、前記ケーブル22A,22B,22Cに対して、高周波出力を選択的に切り換えるために切換機構(図示せず)が設けられている。 In the high-frequency oscillation unit 21 of the high-frequency transmission device 2, for example, in addition to the capacitor unit in the LC high-frequency oscillation circuit, a power supply unit, a storage device (both not shown) and the like are accommodated, and the cable 22A , 22B, 22C are provided with a switching mechanism (not shown) for selectively switching the high-frequency output.
なお、前記高周波発振部21の前面には、図2に示すように、タッチ入力式の操作パネル部211、表示メータ212、電源ランプ213、電流ブレーカ214などが設けられている。 As shown in FIG. 2, a touch input type operation panel 211, a display meter 212, a power lamp 213, a current breaker 214, and the like are provided on the front surface of the high-frequency oscillator 21.
前記ケーブル22(22A,22B,22C)は、高周波発振部21による高周波発振出力をコイルヘッド23(23A,23B,23C)に送出するものである。 The cable 22 (22A, 22B, 22C) is for sending a high-frequency oscillation output from the high-frequency oscillation unit 21 to the coil head 23 (23A, 23B, 23C).
このケーブル22(22A,22B,22C)は、可撓性を有しており、コイルヘッド23(23A,23B,23C)を前記高周波誘導加熱装置2の向きなどに関係なく自在に移動操作が可能となっている。 The cable 22 (22A, 22B, 22C) has flexibility, and the coil head 23 (23A, 23B, 23C) can be freely moved regardless of the orientation of the high-frequency induction heating device 2 or the like. It has become.
前記コイルヘッド23(23A,23B,23C)の基端部には、コイルヘッド23(23A,23B,23C)の稼働時にコイル内部に水等の冷却流体を供給してコイルヘッドを冷却するための冷却流体循環用パイプ25が付設されている。 A cooling fluid such as water is supplied to the inside of the coil to cool the coil head at the base end of the coil head 23 (23A, 23B, 23C) when the coil head 23 (23A, 23B, 23C) is in operation. A cooling fluid circulation pipe 25 is attached.
コイルヘッド23(23A,23B,23C)は、図4および図5に示すように、前記ケーブル22A,22B,22Cの各先端に接続されたカレント・トランス(CTという)収容部231と、このCT収容部231の先端面から前方へ突設された仕切り板232と、CT収容部231の先端面から引き出されたコイル部230とを備えている。 As shown in FIGS. 4 and 5, the coil head 23 (23A, 23B, 23C) includes a current transformer (CT) housing portion 231 connected to each end of the cables 22A, 22B, 22C, and the CT. A partition plate 232 protruding forward from the distal end surface of the accommodating portion 231 and a coil portion 230 drawn from the distal end surface of the CT accommodating portion 231 are provided.
なお、CT収容部231には、手動操作により高周波誘導加熱装置2の稼働をオンオフするための手元スイッチ操作部26が配備されている。 The CT accommodating portion 231 is provided with a hand switch operating portion 26 for turning on and off the operation of the high-frequency induction heating device 2 by manual operation.
前記コイル部230は、良導製の金属材、例えば銅からなり、CT収容部231から引き出された一対のものが、前記仕切り板232の両面に沿って延設されるとともに、途中の交差状部230bを経て先端で互いに連成されて、金属製ワークWの所定部に沿い易い形状の先端部230aが形成されている。 The coil part 230 is made of Ryodo metal material, for example, copper, and a pair of ones drawn from the CT housing part 231 extend along both surfaces of the partition plate 232, and in the middle of the crossing shape. A tip end portion 230a is formed that is coupled to each other at the tip end via the portion 230b and that is easy to follow along a predetermined portion of the metal workpiece W.
例えば、コイルヘッド23Aについては、コイル部230の先端部230aが、図4および図5に示すように、同一水平面内で平行に延びて平面形状が長円形で、正面形状が図6に示すように、直線状になっており、これは、金属製ワークWの直線辺部Waに沿いやすいものとして選択使用される。 For example, with respect to the coil head 23A, as shown in FIG. 4 and FIG. 5, the tip portion 230a of the coil portion 230 extends in parallel within the same horizontal plane, has a planar shape that is oval, and has a front shape as shown in FIG. In this case, it is selected and used as being easy to follow along the straight side Wa of the metal workpiece W.
また、コイルヘッド23Bについては、コイル部230の先端部230aが、図7および図8に示すように、先端側での迂回を繰り返して平面形状が長円形で、正面形状が図9に示すように、弓なりになっており、これは、金属製ワークWの湾曲辺部Wbに沿いやすいものとして選択使用される。 Further, with respect to the coil head 23B, as shown in FIGS. 7 and 8, the distal end portion 230a of the coil portion 230 repeats detouring at the distal end side, the planar shape is oval, and the front shape is as shown in FIG. In addition, it has a bow shape, and this is selected and used as being easy to follow along the curved side portion Wb of the metal workpiece W.
さらに、コイルヘッド23Cについては、図1に示すように、先端部がL形水平状に曲成されており、金属製ワークWの上面平坦部の焼き入れを行うものとして選択使用される。 Further, as shown in FIG. 1, the coil head 23 </ b> C has an L-shaped horizontal tip, and is selectively used for quenching the upper flat portion of the metal workpiece W.
なお、コイルヘッド23(23A,23B,23C)における各コイル先端部230aの内側空所には、フェライトコア234が充填されており、高周波加熱時に発生する磁束を集中させて、加熱効率を高めるようにしてある。 In addition, the ferrite core 234 is filled in the space inside each coil tip portion 230a in the coil head 23 (23A, 23B, 23C) so as to concentrate the magnetic flux generated during high-frequency heating so as to increase the heating efficiency. It is.
また、高周波誘導加熱装置2は、操作パネル211を介して、加熱温度、加熱時間などの加熱条件をワークWの種類やコイルヘッド23に応じて予め設定することが可能であり、設定した各種の加熱条件は加熱チャートとして記憶部(図示せず)に記憶されるものとなされている。そして、焼き入れ対象ワークの種類等に応じて、対応する加熱チャートを操作パネル等で選択指示することにより、加熱チャートを呼び出し、コンピュータ制御により、前記加熱チャートに基づいた条件で、加熱が実行されるものとなされている。 The high frequency induction heating device 2 can set heating conditions such as a heating temperature and a heating time in advance according to the type of the workpiece W and the coil head 23 via the operation panel 211. The heating conditions are stored in a storage unit (not shown) as a heating chart. Then, according to the type of work to be quenched, the corresponding heating chart is selected and instructed on the operation panel, etc., and the heating chart is called, and heating is executed under the conditions based on the heating chart by computer control. It is supposed to be.
また、加熱チャートによることなく、図1に示すように赤外線放射温度計40を設置し、コイルヘッド23による加熱部位の温度を前記赤外線放射温度計40で監視しながらPID制御を行うことも可能である。 Moreover, it is also possible to perform the PID control while installing the infrared radiation thermometer 40 as shown in FIG. 1 and monitoring the temperature of the heating part by the coil head 23 with the infrared radiation thermometer 40 without using the heating chart. is there.
前記コイルヘッド交換用ステーション3は、前記高周波誘導加熱装置2における加熱コイルヘッド23を前記成形加工装置1で使用するために待機させておくものであり、例えば支持台31上の取り付け板32の前面には、3個のコイルヘッド23(23A,23B,23C)を取り外し可能に保持するコイルヘッド保持部33A,33B,33Cが一列に並んで設けられている。 The coil head replacement station 3 waits for using the heating coil head 23 in the high-frequency induction heating device 2 in the molding apparatus 1, for example, the front surface of the mounting plate 32 on the support base 31. The coil head holding portions 33A, 33B, and 33C that detachably hold the three coil heads 23 (23A, 23B, and 23C) are provided in a line.
勿論、複数のコイルヘッド保持部33A,33B,33Cの構造は、任意のものを採用可能である。 Of course, any structure can be adopted for the plurality of coil head holding portions 33A, 33B, and 33C.
前記コイルヘッド装着装置4は、前記コイルヘッド交換用ステーション3に保持されている複数のコイルヘッド23(23A,23B,23C)から選択されたものを前記成形加工装置1に装着させるためのものであり、例えば多関節ロボットなどのアーム41先端のハンド42により、前記ステーション3からコイルヘッド23(23A,23B,23C)を掴んで取り外し、成形加工装置1側の加工具ホルダ17またはその近傍部位に装着させるようになっている。 The coil head mounting device 4 is used to mount the one selected from the plurality of coil heads 23 (23A, 23B, 23C) held in the coil head replacement station 3 on the molding apparatus 1. For example, the hand 42 at the tip of the arm 41 such as an articulated robot grasps and removes the coil head 23 (23A, 23B, 23C) from the station 3 and attaches it to the processing tool holder 17 on the molding processing apparatus 1 side or its vicinity. It is designed to be worn.
勿論、このコイルヘッド装着装置4は、上記多関節ロボットに限定されるものではなく、コイルヘッド23(23A,23B,23C)の着脱操作機能を持っている各種自動装置を採用可能である。 Of course, the coil head mounting device 4 is not limited to the articulated robot, and various automatic devices having a function of attaching and detaching the coil head 23 (23A, 23B, 23C) can be adopted.
つぎに、上記構成の金属製ワークWの高周波焼き入れ装置を用いた金属製ワークWの高周波焼き入れ方法について説明する。この実施形態では、金属製ワークWは、火炎焼き入れ鋼によって形成されている。 Next, an induction hardening method for the metal workpiece W using the induction hardening apparatus for the metal workpiece W having the above-described configuration will be described. In this embodiment, the metal workpiece W is formed of flame-quenched steel.
前記高周波誘導加熱装置2における加熱コイルヘッド23(23A,23B,23C)は、予めコイルヘッド交換用ステーション3におけるコイルヘッド保持部33A,33B,33Cにそれぞれ保持させてある。 The heating coil heads 23 (23A, 23B, 23C) in the high-frequency induction heating device 2 are held in advance in coil head holding portions 33A, 33B, 33C in the coil head replacement station 3, respectively.
まず、加工台N上に搬入された金属ワークWを、例えば切削加工を行う場合には、加工具ホルダ17に加工具として切削刃18を取り付け、成形加工装置1を駆動させる。 First, when the metal workpiece W carried on the processing table N is to be cut, for example, the cutting blade 18 is attached to the processing tool holder 17 as a processing tool, and the forming apparatus 1 is driven.
前記第1〜第3の可動台12〜14の変移量が所定のプログラムに基づいてNC制御されて、それぞれが各方向へ変移することにより、加工具(切削刃)18はワークWの輪郭形状に沿って移動し、金属製ワークWが所望形状に加工成形される。 The amount of change of the first to third movable bases 12 to 14 is NC-controlled based on a predetermined program, and each of them changes in each direction, whereby the processing tool (cutting blade) 18 has a contour shape of the workpiece W. The metal workpiece W is processed and formed into a desired shape.
この後、金属製ワークWの焼き入れを行うが、その前に加工具18を自動であるいは手動で取り外し、次いで、前記コイルヘッド装着装置4がコイルヘッド交換用ステーション3に保持されている3つのコイルヘッド23(23A,23B,23C)のうちから、金属製ワークWの被加熱部の形状に適したコイルヘッド23、例えばコイルヘッド23Cを取り出し、成形加工装置1における加工具ホルダ17またはその近傍に装着する。 Thereafter, the metal workpiece W is quenched, and before that, the processing tool 18 is automatically or manually removed, and then the three coil head mounting devices 4 are held by the coil head replacement station 3. From the coil head 23 (23A, 23B, 23C), the coil head 23 suitable for the shape of the heated part of the metal workpiece W, for example, the coil head 23C is taken out, and the processing tool holder 17 in the forming apparatus 1 or the vicinity thereof. Attach to.
この場合、コイルヘッド23Aが加工具ホルダ17と略同軸上で適正方向に向くように装着される。 In this case, the coil head 23A is mounted so as to be substantially coaxial with the processing tool holder 17 and to face in an appropriate direction.
勿論、前記コイルヘッド装着装置4は必須のもではなく、作業者が前記コイルヘッド23をコイルヘッド交換用ステーション3から外して、成形加工装置1の所定部位に取り付けるようにしてもよい。 Of course, the coil head mounting device 4 is not essential, and an operator may remove the coil head 23 from the coil head replacement station 3 and attach it to a predetermined portion of the molding apparatus 1.
そして、高周波誘導加熱装置2を稼働させる。 And the high frequency induction heating apparatus 2 is operated.
前記コイルヘッド23Cは、金属製ワークWの上面平坦部に適合しているものであるから、そのコイルヘッド23Cを加工具18で設定されている移動制御プログラムを利用して、前記金属製ワークWの上面平坦部に沿って相対移動させると、金属製ワークWの上面平坦部が誘導加熱されて、自動的に焼き入れが行われる。 Since the coil head 23C is adapted to the upper flat portion of the metal workpiece W, the coil head 23C is used by using a movement control program set by the processing tool 18, and the metal workpiece W is used. When the relative movement is performed along the upper flat portion, the upper flat portion of the metal workpiece W is induction-heated and automatically quenched.
ワークWの上面平坦部の焼き入れ後、コイルヘッド装着装置4により、コイルヘッド23Cを成形加工装置1から取り外して、コイルヘッド交換用ステーション3に戻し、次いで別のコイルヘッド23Bを取り出して成形加工装置1に装着する。 After quenching the top flat portion of the workpiece W, the coil head mounting device 4 removes the coil head 23C from the molding processing device 1, returns it to the coil head replacement station 3, and then takes out another coil head 23B for molding processing. Mount on the device 1.
そして、図10に示すように、金属製ワークWの直線辺部Waに沿うように相対移動させれば、コイルヘッド23Aの誘導加熱により、金属製ワークWの直線辺部Waが誘導加熱されて自動的に焼き入れが行われる。 As shown in FIG. 10, if the relative movement is made along the straight side portion Wa of the metal workpiece W, the linear side portion Wa of the metal workpiece W is induction-heated by induction heating of the coil head 23A. Quenching is performed automatically.
次いで、コイルヘッド装着装置4により、コイルベッド23Aを弓なり状のコイルヘッド23Bに交換装着して、金属製ワークWの湾曲辺部Wbに沿って移動させながら湾曲辺部Wbを加熱し、焼き入れ処理を行う。 Next, the coil head mounting device 4 exchanges and mounts the coil bed 23A to the bow-shaped coil head 23B and heats and quenches the curved side Wb while moving along the curved side Wb of the metal workpiece W. Process.
このように、高周波誘導加熱装置2におけるコイルヘッド23(23A,23B,23C)を前記成形加工装置1の加工具ホルダ17またはその近傍に装着できるようにしたから、前記金属製のワークWの切削などの成形加工が終了すれば、そのまま所望のコイルヘッド23を選択使用して焼き入れ工程に移ることでき、生産効率が高められる。また、前記加工具18に対して設定された移動制御プログラムを利用して、前記コイルヘッド23を前記ワークWの輪郭形状に沿って移動させるから、コイルヘッド23の移動のためのプログラムを一から新たに設定する必要はなくなり、効率的である。 Thus, since the coil head 23 (23A, 23B, 23C) in the high frequency induction heating device 2 can be mounted on the processing tool holder 17 of the forming apparatus 1 or in the vicinity thereof, the cutting of the metal workpiece W is performed. When the molding process such as the above is completed, the desired coil head 23 can be selected and used as it is and the process can be shifted to the quenching process, and the production efficiency can be improved. In addition, since the coil head 23 is moved along the contour shape of the workpiece W using a movement control program set for the processing tool 18, a program for moving the coil head 23 is started from the beginning. There is no need to set a new value, which is efficient.
さらに、高周波誘導加熱装置2におけるコイルヘッド23の誘導加熱により自動的に焼き入れ処理が施されるとともに、金属製ワークWに対して深くしかも必要部位のみが均一に加熱されるから、従来のガスバーナを用いて焼き入れを行う方法に比べて、加熱量のばらつきや加熱位置のずれなどをなくし得て歪みの発生を極力抑制でき、これにより、焼き入れ後に歪みを是正する作業が不要ないし軽微となる。 Further, the induction heating of the coil head 23 in the high-frequency induction heating device 2 automatically performs a quenching process, and only a necessary portion is deeply heated uniformly with respect to the metal workpiece W, so that a conventional gas burner is used. Compared with the method of quenching using heat, it is possible to eliminate the variation in heating amount and deviation of the heating position and suppress the occurrence of distortion as much as possible, so that the work of correcting the distortion after quenching is unnecessary or light Become.
以上、本発明の一実施形態を説明したが、本発明は上記実施形態に限定されることはない。例えば、金属製ワークに対して加工具18またはコイルヘッド23を移動させるものとしたが、金属製ワークWの側を移動させる構成であっても良い。 Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, although the processing tool 18 or the coil head 23 is moved with respect to the metal workpiece, the metal workpiece W side may be moved.
また、前記高周波誘導加熱装置2には、誘導加熱した金属製ワークWを冷却するための冷却流体を噴射する冷却流体噴出口を設け、冷却流体の噴出により金属製ワークWの焼き入れ状態の実現を、自然冷却の場合に比べて早めるものとしても良い。 The high-frequency induction heating device 2 is provided with a cooling fluid outlet for injecting a cooling fluid for cooling the induction-heated metal workpiece W, and a quenching state of the metal workpiece W is realized by the ejection of the cooling fluid. It is good also as what accelerates compared with the case of natural cooling.
また、3本のコイルヘッド23A〜23Cを用いた場合を示したが、単純形状の場合には1本でも良いし、2本でも良い。より複雑な形状の場合には、4本以上を使用しても良い。 Moreover, although the case where the three coil heads 23A-23C were used was shown, in the case of a simple shape, one may be sufficient and two may be sufficient. In the case of a more complicated shape, four or more may be used.
また、成形加工装置1を利用して高周波焼き入れを行う場合を説明したが、成形加工装置を兼用するものでなくても良く、コイルヘッド23を支持してワークWの焼き入れ対象部位に沿って相対移動しうる構成であればよい。 Moreover, although the case where induction hardening was performed using the shaping | molding processing apparatus 1 was demonstrated, it may not be what combines a shaping | molding processing apparatus, it supports the coil head 23 and follows the hardening object site | part of the workpiece | work W. Any configuration that can move relative to each other is acceptable.
1・・・・・成形加工装置
2・・・・・高周波誘導加熱装置
21・・・・高周波発振部
17・・・・加工具用ホルダ(支持手段)
18・・・・加工具
19・・・・制御手段(移動制御手段)
22(22A,22B,22C)・・・ケーブル
23(23A,23B,23C)・・・コイルヘッド
W・・・・・金属製ワーク
DESCRIPTION OF SYMBOLS 1 ... Molding processing apparatus 2 ... High frequency induction heating apparatus 21 ... High frequency oscillation part 17 ... Processing tool holder (support means)
18 .... Processing tool 19 .... Control means (movement control means)
22 (22A, 22B, 22C) ... Cable 23 (23A, 23B, 23C) ... Coil head W ... Metal workpiece
Claims (5)
前記誘導加熱用コイルヘッドを支持する支持手段と、
前記支持手段が金属製ワークの焼き入れ対象部位に沿って相対移動するように、前記支持手段または金属製ワークの少なくとも一方を移動させる移動制御手段と、
を備えたことを特徴とする金属製ワークの高周波焼き入れ装置。 A high-frequency induction heating apparatus having a coil head for induction heating;
Support means for supporting the induction heating coil head;
A movement control means for moving at least one of the support means or the metal workpiece so that the support means relatively moves along the quenching target portion of the metal workpiece;
An induction hardening apparatus for metal workpieces characterized by comprising:
誘導加熱用コイルヘッドを有する高周波誘導加熱装置と、
前記加工具用ホルダに保持された前記加工具が、前記金属製ワークの加工対象部位に沿って相対移動するように、前記加工具または金属製ワークの少なくとも一方を移動させる移動制御手段と、
を備え、
前記加工具用ホルダまたはその近傍に、前記高周波誘導加熱装置のコイルヘッドを取り外し可能に装着し、前記移動制御手段により前記コイルヘッドを前記ワークの焼き入れ対象部位に沿って相対移動させることにより、ワークの焼き入れ処理を実施することを特徴とする金属製ワークの高周波焼き入れ装置。 A processing tool holder for holding various processing tools for forming processing in a replaceable manner, and a forming apparatus for forming a metal workpiece along its contour shape;
A high-frequency induction heating apparatus having a coil head for induction heating;
A movement control means for moving at least one of the processing tool or the metal workpiece so that the processing tool held by the holder for the processing tool relatively moves along a processing target portion of the metal workpiece;
With
By detachably mounting the coil head of the high-frequency induction heating device on or near the holder for the processing tool, by moving the coil head relative to the workpiece to be quenched by the movement control means, An induction hardening apparatus for metal workpieces, wherein the workpiece is quenched.
前記支持手段が金属製ワークの焼き入れ対象部位に沿って相対移動するように、前記支持手段または金属製ワークの少なくとも一方を移動させることにより、ワークの焼き入れ処理を実施することを特徴とする金属製ワークの高周波焼き入れ方法。 The induction heating coil head of the high frequency induction heating apparatus having the induction heating coil head is supported by a supporting means,
The workpiece is hardened by moving at least one of the support means or the metal workpiece so that the support means moves relative to the part to be quenched of the metal workpiece. Induction hardening method for metal workpieces.
前記成形加工装置の加工具用ホルダまたはその近傍に、前記高周波誘導加熱装置のコイルヘッドを取り外し可能に装着し、前記コイルヘッドを前記ワークの焼き入れ対象部位に沿って相対移動させることにより、ワークの焼き入れ処理を実施することを特徴とする金属製ワークの高周波焼き入れ方法。
It has a holder for a processing tool that holds various processing tools for forming processing in a replaceable manner, and is a molding processing apparatus that forms a metal workpiece, and the processing tool held by the holder for the processing tool includes: Using a forming apparatus that is configured to move at least one of the processing tool or the metal workpiece so as to move relative to the processing target portion of the metal workpiece,
The coil head of the high-frequency induction heating device is detachably attached to or near the processing tool holder of the molding processing device, and the coil head is moved relative to the workpiece to be quenched, thereby moving the workpiece. A high-frequency quenching method for metal workpieces, characterized by performing a quenching process.
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Cited By (2)
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 |
CN114622068A (en) * | 2022-03-10 | 2022-06-14 | 重庆泰沃机械制造有限公司 | Local automatic shielding device for induction quenching |
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JPH05230522A (en) * | 1992-02-25 | 1993-09-07 | Yamazaki Mazak Corp | Fully automatic high-frequency hardening device |
JPH05263125A (en) * | 1992-03-16 | 1993-10-12 | Yamazaki Mazak Corp | Full automatic high-frequency induction quenching device |
JPH0967615A (en) * | 1995-06-19 | 1997-03-11 | Mazda Motor Corp | Induction hardening method and device therefor |
JP2002194426A (en) * | 2000-12-27 | 2002-07-10 | Miyaden Co Ltd | Induction hardening device |
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2005
- 2005-09-27 JP JP2005279336A patent/JP2007092094A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH05230522A (en) * | 1992-02-25 | 1993-09-07 | Yamazaki Mazak Corp | Fully automatic high-frequency hardening device |
JPH05263125A (en) * | 1992-03-16 | 1993-10-12 | Yamazaki Mazak Corp | Full automatic high-frequency induction quenching device |
JPH0967615A (en) * | 1995-06-19 | 1997-03-11 | Mazda Motor Corp | Induction hardening method and device therefor |
JP2002194426A (en) * | 2000-12-27 | 2002-07-10 | Miyaden Co Ltd | Induction hardening device |
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 |
CN114622068A (en) * | 2022-03-10 | 2022-06-14 | 重庆泰沃机械制造有限公司 | Local automatic shielding device for induction quenching |
CN114622068B (en) * | 2022-03-10 | 2023-11-21 | 重庆泰沃机械制造有限公司 | Local automatic shielding device for induction quenching |
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