JP3300293B2 - High frequency heating coil - Google Patents
High frequency heating coilInfo
- Publication number
- JP3300293B2 JP3300293B2 JP32777898A JP32777898A JP3300293B2 JP 3300293 B2 JP3300293 B2 JP 3300293B2 JP 32777898 A JP32777898 A JP 32777898A JP 32777898 A JP32777898 A JP 32777898A JP 3300293 B2 JP3300293 B2 JP 3300293B2
- Authority
- JP
- Japan
- Prior art keywords
- heating
- conductor
- frequency
- power supply
- heating coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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)
- Heat Treatment Of Articles (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は、円筒状ワークの内
面に形成された溝部の対向する側面部を加熱する高周波
加熱コイルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency heating coil for heating a side face of a groove formed on an inner surface of a cylindrical workpiece.
【0002】[0002]
【従来の技術】内面に溝部が形成されており、この溝部
の対向する側面部を加熱することが必要な円筒状ワーク
としては、例えば、図8に示すような等速ジョイントに
用いられるトリポートカップ部WCがある。この円筒状
ワークとしてのトリポートカップ部WCは、底有円筒状
に形成されており、内面に120°間隔で3つの溝部W
Aが形成されている。この溝部WAには、等速ジョイン
トを構成するシャフトが嵌まり込むため、高周波焼入を
施す必要がある。この高周波焼入に際しての加熱は、例
えば、図7に示すような高周波加熱コイル7000が用
いられる。2. Description of the Related Art As a cylindrical work in which a groove is formed on the inner surface, and it is necessary to heat the opposite side of the groove, for example, a tripod used for a constant velocity joint as shown in FIG. There is a cup part WC. The tripod cup portion WC as this cylindrical work is formed in a bottomed cylindrical shape, and has three grooves W at 120 ° intervals on the inner surface.
A is formed. Since the shaft constituting the constant velocity joint fits into the groove WA, it is necessary to perform induction hardening. For the heating during the induction hardening, for example, an induction heating coil 7000 as shown in FIG. 7 is used.
【0003】この高周波加熱コイル7000は、略門型
の3つの加熱部710A、710B、710Cと、この
加熱部710A、710B、710Cを接続する2つの
接続部720A、720Bと、高周波電源(図示省略)
に接続するための給電部730A、730Bとを有して
いる。The high-frequency heating coil 7000 includes three substantially gate-shaped heating sections 710A, 710B, and 710C, two connection sections 720A and 720B for connecting the heating sections 710A, 710B, and 710C, and a high-frequency power supply (not shown). )
And power supply units 730A and 730B for connection to the power supply.
【0004】前記加熱部710A、710B、710C
は、溝部WAの形状に合致した加熱導体部711A、7
11B、711Cを有している。かかる加熱導体部71
1A、711B、711Cを有する高周波加熱コイル7
000は、この加熱導体部711A、711B、711
Cを溝部WAの内部に入れた状態で、トリポートカップ
部WCと高周波加熱コイル7000とを相対的に移動さ
せながら、高周波加熱コイル7000に高周波電流を供
給することで溝部WAを加熱する。The heating units 710A, 710B, 710C
Are heating conductors 711A and 711 that match the shape of the groove WA.
11B and 711C. Such a heating conductor 71
High frequency heating coil 7 having 1A, 711B, 711C
000 are the heating conductors 711A, 711B, 711
The groove WA is heated by supplying a high-frequency current to the high-frequency heating coil 7000 while relatively moving the tripod cup WC and the high-frequency heating coil 7000 in a state in which C is placed inside the groove WA.
【0005】[0005]
【発明が解決しようとする課題】しかしながら、トリポ
ートカップ部WCの溝部WAは、対向する側面部WM
と、この側面部WMの間に位置する底面部WBとのう
ち、側面部WMのみに高周波焼入を施すタイプのものが
ある。上述した高周波加熱コイル7000では、側面部
WMのみならず、底面部WBまで加熱されるため、不要
な底面部WBにまで高周波焼入が施される。However, the groove portion WA of the tripod cup portion WC is formed on the opposite side portion WM.
There is a type in which only the side portion WM is subjected to induction hardening among the bottom portion WB located between the side portions WM. In the above-described high-frequency heating coil 7000, not only the side surface portion WM but also the bottom surface portion WB are heated, so that the unnecessary bottom surface portion WB is subjected to induction hardening.
【0006】本発明は、上記事情に鑑みて創案されたも
のであって、溝部の側面部のみを加熱することができる
高周波加熱コイルを提供することを目的としている。The present invention has been made in view of the above circumstances, and has as its object to provide a high-frequency heating coil capable of heating only a side surface of a groove.
【0007】[0007]
【課題を解決するための手段】本発明に係る高周波加熱
コイルは、円筒状ワークの内面に形成された溝部の対向
する側面部を加熱する高周波加熱コイルであって、前記
側面部に対向する一対の加熱導体部と、高周波電源と接
続される一対の給電導体部と、一方の給電導体部と一方
の加熱導体部との間を接続する第1の接続導体部と、前
記一方の加熱導体部と他方の加熱導体部との間とを接続
する第2の接続導体部とを備えており、前記第1及び第
2の接続導体部は高周波電流を二分する並列部を有して
いる。A high-frequency heating coil according to the present invention is a high-frequency heating coil for heating a side face of a groove formed on an inner surface of a cylindrical workpiece, the side face facing the side face. Heating conductor portion, a pair of power supply conductor portions connected to the high-frequency power supply, a first connection conductor portion connecting between one power supply conductor portion and one heating conductor portion, and the one heating conductor portion And a second connection conductor connecting between the first and second heating conductors. The first and second connection conductors have a parallel portion for dividing a high-frequency current into two.
【0008】[0008]
【発明の実施の形態】図1は本発明の実施の形態に係る
高周波加熱コイルの概略的構成図、図2は本発明の実施
の形態に係る高周波加熱コイルの要部の概略的斜視図、
図3は本発明の実施の形態に係る高周波加熱コイルの要
部の概略的斜視図、図4は本発明の実施の形態に係る高
周波加熱コイルと円筒状ワークとの関係を示す概略的説
明図、図5は本発明の実施の形態に係る高周波加熱コイ
ルを用いた円筒状ワークの溝部の側面部の高周波焼入を
示す概略的断面図、図6は本発明の他の実施の形態に係
る高周波加熱コイルの要部の概略的斜視図である。FIG. 1 is a schematic configuration diagram of a high-frequency heating coil according to an embodiment of the present invention, FIG. 2 is a schematic perspective view of a main part of the high-frequency heating coil according to the embodiment of the present invention,
FIG. 3 is a schematic perspective view of a main part of the high-frequency heating coil according to the embodiment of the present invention, and FIG. 4 is a schematic explanatory view showing a relationship between the high-frequency heating coil and the cylindrical work according to the embodiment of the present invention. FIG. 5 is a schematic cross-sectional view showing induction hardening of a side surface of a groove of a cylindrical work using a high-frequency heating coil according to an embodiment of the present invention, and FIG. 6 is a view showing another embodiment of the present invention. It is a schematic perspective view of the principal part of a high frequency heating coil.
【0009】本発明の実施の形態に係る高周波加熱コイ
ル1000は、円筒状ワークとしてのトリポートカップ
部WCの内面に形成された3つの溝部WAの対向する側
面部WMを加熱する高周波加熱コイルであって、3つの
加熱部100A、100B、100Cと、この加熱部1
00A、100B、100Cを直列に接続する一対の接
続部200A、200Bと、高周波電源400と接続す
る一対の給電部300A、300Bとを有している。A high-frequency heating coil 1000 according to an embodiment of the present invention is a high-frequency heating coil for heating opposing side surfaces WM of three grooves WA formed on the inner surface of a tripod cup WC as a cylindrical work. There are three heating units 100A, 100B, 100C and this heating unit 1
It has a pair of connecting parts 200A, 200B that connect 00A, 100B, 100C in series, and a pair of feeding parts 300A, 300B that connect to the high-frequency power supply 400.
【0010】なお、前記トリポートカップ部WCには、
図5に示すように、シャフト部WSが連連設されてい
る。この円筒状ワークとしてのトリポートカップ部WC
は、底有円筒状に形成されており、内面に120°間隔
で3つの溝部WMが形成されている。[0010] The tripod cup portion WC includes:
As shown in FIG. 5, the shaft portion WS is continuously provided. The tripport cup WC as this cylindrical work
Is formed in a cylindrical shape with a bottom, and three grooves WM are formed on the inner surface at intervals of 120 °.
【0011】前記加熱部100A、100B、100C
は、ほぼ同一の構成であるので、まず加熱部100Aを
例に挙げて説明する。加熱部100Aは、図2に示すよ
うに、前記側面部WMに対向する一対の加熱導体部11
0A、120Aと、高周波電源400と接続される一対
の給電導体部130A、140Aと、一方の給電導体部
130Aと一方の加熱導体部110Aとの間を接続する
第1の接続導体部150Aと、前記一方の加熱導体部1
10Aと他方の加熱導体部140Aとの間とを接続する
第2の接続導体部160Aとを備えており、前記第1の
接続導体部150Aと第2の接続導体部160Aは、高
周波電流を二分する並列部151A、161Aを有して
いる。The heating units 100A, 100B, 100C
Have almost the same configuration, and will be described first with reference to the heating unit 100A as an example. As shown in FIG. 2, the heating unit 100 </ b> A includes a pair of heating conductors 11 facing the side surface portion WM.
0A, 120A, a pair of power supply conductors 130A, 140A connected to the high frequency power supply 400, a first connection conductor 150A connecting between one power supply conductor 130A and one heating conductor 110A, The one heating conductor 1
10A and a second connection conductor 160A that connects the other heating conductor 140A to the other heating conductor 140A. The first connection conductor 150A and the second connection conductor 160A divide the high-frequency current into two. And the parallel parts 151A and 161A.
【0012】この加熱部100Aで溝部WAの側面部W
Mの加熱に関与する部分は、一対の加熱導体部110
A、120Aである。なお、この加熱部100Aは、自
身の過熱の防止のために冷却液を循環させるように、導
電性を有する銅の角パイプや樋状部材に蓋体を取り付け
てパイプ状にした部材を連結して構成されている。The heating section 100A uses the side surface W of the groove WA.
The part involved in the heating of M is a pair of heating conductors 110
A, 120A. In addition, this heating unit 100A connects a pipe-shaped member by attaching a lid to a conductive copper square pipe or gutter-like member so as to circulate a cooling liquid to prevent overheating of the heating unit 100A. It is configured.
【0013】まず、前記第1の接続導体部150Aは、
横長状のロ字形状の並列部151Aと、この並列部15
1Aの両端に連設される突出部152A、153Aを有
している。並列部151Aの幅寸法は、突出部152
A、153Aの幅寸法の1/2に設定されている。この
ため、突出部152A、153Aからの高周波電流は、
並列部151Aにおいて二分されるのである。First, the first connection conductor 150A is
A horizontally long parallelogram-shaped parallel portion 151A and this parallel portion 15
It has protruding portions 152A and 153A connected to both ends of 1A. The width dimension of the parallel portion 151A is
A and 153A are set to の of the width dimension. Therefore, the high-frequency current from the protrusions 152A and 153A is
It is bisected in the parallel section 151A.
【0014】この第1の接続導体部150Aの突出部1
52Aは、一方の給電導体部130Aに接続される。こ
の一方の給電導体部130Aは、内部に他方の給電導体
部140Aが挿入される貫通孔131Aを有している。Projection 1 of first connection conductor 150A
52A is connected to one power supply conductor 130A. One of the power supply conductors 130A has a through hole 131A into which the other power supply conductor 140A is inserted.
【0015】また、前記第2の接続導体部160Aは、
上述した第1の接続導体部150Aと同等に構成されて
いる。すなわち、この第2の接続導体部160Aは、横
長状のロ字形状の並列部161Aと、この並列部161
Aの両端に連設される突出部162A、163Aを有し
ている。並列部161Aの幅寸法は、突出部162A、
163Aの幅寸法の1/2に設定されている。The second connection conductor 160A is
The configuration is the same as that of the first connection conductor 150A described above. In other words, the second connection conductor 160A is composed of a horizontally elongated parallel-shaped parallel part 161A and a parallel part 161A.
A has protrusions 162A and 163A connected to both ends of A. The width of the parallel portion 161A is the same as the protrusion 162A,
The width is set to の of the width of 163A.
【0016】そして、この第2の接続導体部160A
は、第1の接続導体部150Aと所定の間隔を有して上
下方向に対向している。The second connection conductor 160A
Are vertically opposed to the first connection conductor 150A at a predetermined interval.
【0017】前記加熱導体部110Aは、前記第1の接
続導体部150Aと第2の接続導体部160Aとの間に
配置されている。すなわち、第1の接続導体部150A
の突出部153Aと、第2の接続導体部160Aの突出
部162Aとの間に配置されているのである。かかる加
熱導体部110Aは、溝部WAの側面部WMに対して所
定の間隔を有して対向するようになっている。なお、こ
の加熱導体部110Aの幅寸法は、突出部153A、1
62Aと同じ幅寸法に設定されている。The heating conductor 110A is disposed between the first connection conductor 150A and the second connection conductor 160A. That is, the first connection conductor 150A
Is disposed between the projection 153A of the second connection conductor 160A and the projection 162A of the second connection conductor 160A. The heating conductor 110A faces the side surface WM of the groove WA at a predetermined interval. The width of the heating conductor 110A is set to be equal to the protrusions 153A,
It is set to the same width as 62A.
【0018】前記加熱導体部120Aは、第2の接続導
体部160Aの突出部163Aから横方向に略直角に接
続されている。しかも、この加熱導体部120Aは、前
記加熱導体部110Aと平行になっている。The heating conductor 120A is connected to the projection 163A of the second connection conductor 160A at a substantially right angle in the horizontal direction. Moreover, the heating conductor 120A is parallel to the heating conductor 110A.
【0019】この加熱導体部120Aは、前記給電導体
部130Aの貫通孔131Aに挿入される給電導体部1
40Aに接続されている。すなわち、この加熱導体部1
20Aは、貫通孔131Aに挿入された部分からが給電
導体部140Aとなっているのである。なお、加熱導体
部120Aは、給電導体部130Aの直前でクランク状
に曲折されている。The heating conductor 120A is provided with the power supply conductor 1 inserted into the through hole 131A of the power supply conductor 130A.
40A. That is, this heating conductor 1
In 20A, the portion inserted into the through-hole 131A becomes the power supply conductor 140A. The heating conductor 120A is bent in a crank shape immediately before the power supply conductor 130A.
【0020】給電導体部130A、140Aは、上述し
たように、高周波電源400に接続されている。従っ
て、この加熱部100Aにおける高周波電流は、給電導
体部130A→第1の接続導体部150A(突出部15
2A→並列部151A→突出部153A)→加熱導体部
110A→第2の接続導体部160A(突出部162A
→並列部161A→突出部163A)→加熱導体部12
0A→給電導体部140Aの順又はこの逆に流れる。The power supply conductors 130A and 140A are connected to the high frequency power supply 400 as described above. Therefore, the high-frequency current in the heating section 100A is changed from the power supply conductor section 130A to the first connection conductor section 150A (the projecting section 15A).
2A → Parallel part 151A → Protrusion 153A) → Heating conductor 110A → Second connection conductor 160A (Protrusion 162A)
→ parallel part 161A → projecting part 163A) → heating conductor part 12
The current flows in the order of 0A → power supply conductor 140A or vice versa.
【0021】このように構成された加熱部100Aに
は、図3に示すように、第1の接続導体部150Aの並
列部151Aと第2の接続導体部160Aの並列部16
1Aとを縦方向に貫通するフェライト等からなるコア4
10や、並列部151A、161Aに外向きに取り付け
られる略コ字形状のコア420が取り付けられる。これ
らのコア410、420が、前記並列部151A等に取
り付けられることにより、加熱導体部110A、120
Aに対向した溝部WAの側面部WMがより集中的に加熱
されることになる。As shown in FIG. 3, the heating section 100A thus configured includes a parallel section 151A of the first connection conductor section 150A and a parallel section 16A of the second connection conductor section 160A.
A core 4 made of ferrite or the like penetrating through 1A in the vertical direction.
10, and a substantially U-shaped core 420 attached outward to the parallel portions 151A, 161A. By attaching these cores 410 and 420 to the parallel part 151A and the like, the heating conductor parts 110A and 120
The side surface portion WM of the groove portion WA facing A is heated more intensively.
【0022】このように構成された加熱部100Aと略
同一の加熱部100B、100Cが図1に示すように組
み合わせられて高周波加熱コイル1000を構成する。
すなわち、加熱部100Aは接続部200Aによって加
熱部100Bに接続され、加熱部100Bは接続部20
0Bによって加熱部100Cに接続される。そして、加
熱部100Aの接続導体部140Aは給電部300A
に、加熱部100Cの接続導体部130Cは給電部30
0Bにそれぞれ接続される。これによって、3つの加熱
部100A、100B、100Cは高周波電源400に
対して直列に接続されたことになる。The heating units 100B and 100C, which are substantially the same as the heating unit 100A thus configured, are combined as shown in FIG. 1 to form a high-frequency heating coil 1000.
That is, the heating unit 100A is connected to the heating unit 100B by the connection unit 200A, and the heating unit 100B is connected to the connection unit 20B.
OB is connected to the heating unit 100C. The connection conductor 140A of the heating unit 100A is connected to the power supply unit 300A.
In addition, the connecting conductor 130C of the heating unit 100C is
0B. This means that the three heating units 100A, 100B, and 100C are connected in series to the high-frequency power supply 400.
【0023】そして、各加熱部100A、100B、1
00Cの下側には、図示しない冷却ジャケットが配置さ
れている。この冷却ジャケットは、加熱部100A、1
00B、100Cの加熱導体部110A、120A、1
10B、120B、110C、120Cで加熱された部
分、すなわち溝部WAの側面部WMに冷却液を噴射して
冷却するものである。The heating units 100A, 100B, 1
A cooling jacket (not shown) is arranged below 00C. The cooling jacket includes heating units 100A, 1
00B, 100C heating conductors 110A, 120A, 1
The cooling liquid is injected to the portions heated at 10B, 120B, 110C, and 120C, that is, the side surfaces WM of the groove portions WA to cool them.
【0024】このように構成された高周波加熱コイル1
000は、次のようにしてトリポートカップ部WCの溝
部WAの側面部WMの高周波焼入を行なう。トリポート
カップ部WCは、開口510が開設された載置台500
に開放側を下向きにして載置される。前記開口510
は、トリポートカップ部WCの開放端の形状に合致させ
て開設されている。The high-frequency heating coil 1 constructed as described above
000 performs the induction hardening of the side surface portion WM of the groove portion WA of the tripod cup portion WC as follows. The tripod cup section WC includes a mounting table 500 having an opening 510.
Is placed with the open side facing down. The opening 510
Are set in conformity with the shape of the open end of the tripod cup portion WC.
【0025】さらに、トリポートカップ部WCの周囲に
は、トリポートカップ部WCの過熱を防止するために外
部冷却ジャケット600が設けられている。Further, an external cooling jacket 600 is provided around the tripod cup WC to prevent the tripod cup WC from being overheated.
【0026】前記開口510から高周波加熱コイル10
00がトリポートカップ部WCの内部に挿入され、開放
側から閉塞側へと移動していく。この移動とともに、高
周波電源400からは、高周波電流が高周波加熱コイル
1000に供給されるため、前記溝部WAの側面部WM
は順次、加熱部100A、100B、100Cの加熱導
体部110A、120A、110B、120B、110
C、120Cによって、開放側から閉塞側へと向かって
加熱される。From the opening 510, the high-frequency heating coil 10
00 is inserted into the tripod cup portion WC and moves from the open side to the closed side. Along with this movement, a high-frequency current is supplied from the high-frequency power supply 400 to the high-frequency heating coil 1000, so that the side surface WM of the groove WA is provided.
Are sequentially the heating conductor portions 110A, 120A, 110B, 120B, 110 of the heating portions 100A, 100B, 100C.
By C and 120C, heating is performed from the open side to the closed side.
【0027】そして、各加熱部100A、100B、1
00Cの下方に設けられた冷却ジャケット(図示省略)
から噴射される冷却液によって前記側面部WMに対する
高周波焼入が施される。Each of the heating units 100A, 100B, 1
Cooling jacket provided below 00C (not shown)
Induction quenching is performed on the side surface portion WM by the cooling liquid injected from the inside.
【0028】高周波加熱コイル1000がトリポートカ
ップ部WCの閉塞部まで達したならば、高周波電流の供
給を停止し、トリポートカップ部WCから高周波加熱コ
イル1000を抜き出し、載置台500に次の新たなト
リポートカップ部WCを載置する。When the high-frequency heating coil 1000 reaches the closed portion of the tripod cup section WC, the supply of the high-frequency current is stopped, the high-frequency heating coil 1000 is extracted from the tripod cup section WC, and the next new A suitable tripport cup WC is placed.
【0029】なお、上述した実施の形態に係る高周波加
熱コイル1000では、各加熱部100A、100B、
100Cの並列部151A、161A、151B、16
1B、151C、161Cの両端にそれぞれ突出部15
2A、153A、152B、153B、152C、15
3C、162A、163A、162B、163B、16
2C、163Cを設けたが、図6に示すように、これら
突出部を設けることなく、上下の並列部151A、16
1A、151B、161B、151C、161Cを加熱
導体部110A、120A、110B、120B、11
0C、120Cで直接接続するようにしてもよい。In the high-frequency heating coil 1000 according to the above-described embodiment, each of the heating units 100A, 100B,
100C parallel parts 151A, 161A, 151B, 16
1B, 151C, and 161C, each having a protrusion 15 at each end.
2A, 153A, 152B, 153B, 152C, 15
3C, 162A, 163A, 162B, 163B, 16
2C and 163C are provided, but as shown in FIG. 6, these upper and lower parallel portions 151A and 16
1A, 151B, 161B, 151C, 161C are connected to the heating conductors 110A, 120A, 110B, 120B, 11
You may make it connect directly at 0C and 120C.
【0030】また、上述した実施の形態では、トリポー
トカップ部WCの溝部WAの側面部WMを加熱するとし
たが、本発明に係る高周波加熱コイルはこれに限定され
ることはない。他の円筒状ワークの内面の溝部の側面部
であってもよいことは勿論である。In the above-described embodiment, the side surface portion WM of the groove portion WA of the tripod cup portion WC is heated, but the high frequency heating coil according to the present invention is not limited to this. Of course, it may be the side surface of the groove on the inner surface of another cylindrical work.
【0031】[0031]
【発明の効果】本発明に係る高周波加熱コイルは、円筒
状ワークの内面に形成された溝部の対向する側面部を加
熱する高周波加熱コイルであって、前記側面部に対向す
る一対の加熱導体部と、高周波電源と接続される一対の
給電導体部と、一方の給電導体部と一方の加熱導体部と
の間を接続する第1の接続導体部と、前記一方の加熱導
体部と他方の加熱導体部との間とを接続する第2の接続
導体部とを備えており、前記第1及び第2の接続導体部
は高周波電流を二分する並列部を有している。The high-frequency heating coil according to the present invention is a high-frequency heating coil for heating a side face of a groove formed on the inner surface of a cylindrical work, and a pair of heating conductors facing the side face. A pair of power supply conductors connected to the high-frequency power supply, a first connection conductor connecting between one power supply conductor and one heating conductor, and one heating conductor and the other heating conductor. And a second connection conductor for connecting to the conductor. The first and second connection conductors have a parallel portion for dividing a high-frequency current into two.
【0032】このため、第1及び第2の接続導体部で
は、電流が1/2になるので、これに対向する面、すな
わち溝部の底面部は加熱されず、側面部のみに高周波焼
入が施される。その結果、底面部は高周波焼入が施され
ない。As a result, in the first and second connection conductors, the current is reduced by half, so that the opposite surface, that is, the bottom surface of the groove is not heated, and induction hardening is applied only to the side surface. Will be applied. As a result, induction hardening is not performed on the bottom surface.
【0033】また、本発明に係る他の高周波加熱コイル
は、円筒状ワークの内面に形成された複数個の溝部の対
向する側面部を加熱する高周波加熱コイルであって、溝
部に嵌まり込む複数個の加熱部と、この加熱部を直列に
接続する複数個の接続部と、高周波電源と接続される給
電部とを具備しており、前記加熱部は、前記側面部に対
向する一対の加熱導体部と、高周波電源と接続される一
対の給電導体部と、一方の給電導体部と一方の加熱導体
部との間を接続する第1の接続導体部と、前記一方の加
熱導体部と他方の加熱導体部との間とを接続する第2の
接続導体部とを具備しており、前記第1及び第2の接続
導体部は、高周波電流を二分する並列部を有している。Another high-frequency heating coil according to the present invention is a high-frequency heating coil for heating opposite side surfaces of a plurality of grooves formed on the inner surface of a cylindrical workpiece, and the plurality of high-frequency heating coils fitted into the grooves. Heating units, a plurality of connecting units that connect the heating units in series, and a power supply unit that is connected to a high-frequency power supply. The heating unit includes a pair of heating units facing the side surface unit. A conductor portion, a pair of power supply conductor portions connected to the high-frequency power supply, a first connection conductor portion connecting between one power supply conductor portion and one heating conductor portion, and the one heating conductor portion and the other. And a second connection conductor that connects between the heating conductor and the first and second connection conductors. The first and second connection conductors have a parallel portion that bisects a high-frequency current.
【0034】このため、この高周波加熱コイルでは、複
数個の溝部を有する円筒状ワークであっても、同様に側
面部のみに高周波焼入が施される。For this reason, in the high-frequency heating coil, high-frequency quenching is similarly performed only on the side surfaces of a cylindrical work having a plurality of grooves.
【0035】さらに、内面に3つの溝部が120°間隔
で形成されているトリポートカップ部を円筒状ワークと
すると、好適である。Further, it is preferable that the tripod cup portion in which three grooves are formed on the inner surface at 120 ° intervals is a cylindrical work.
【図1】本発明の実施の形態に係る高周波加熱コイルの
概略的構成図である。FIG. 1 is a schematic configuration diagram of a high-frequency heating coil according to an embodiment of the present invention.
【図2】本発明の実施の形態に係る高周波加熱コイルの
要部の概略的斜視図である。FIG. 2 is a schematic perspective view of a main part of the high-frequency heating coil according to the embodiment of the present invention.
【図3】本発明の実施の形態に係る高周波加熱コイルの
要部の概略的斜視図である。FIG. 3 is a schematic perspective view of a main part of the high-frequency heating coil according to the embodiment of the present invention.
【図4】本発明の実施の形態に係る高周波加熱コイルと
円筒状ワークとの関係を示す概略的説明図である。FIG. 4 is a schematic explanatory view showing a relationship between a high-frequency heating coil and a cylindrical workpiece according to the embodiment of the present invention.
【図5】本発明の実施の形態に係る高周波加熱コイルを
用いた円筒状ワークの溝部の側面部の高周波焼入を示す
概略的断面図である。FIG. 5 is a schematic cross-sectional view showing induction hardening of a side surface of a groove of a cylindrical work using the high-frequency heating coil according to the embodiment of the present invention.
【図6】本発明の他の実施の形態に係る高周波加熱コイ
ルの要部の概略的斜視図である。FIG. 6 is a schematic perspective view of a main part of a high-frequency heating coil according to another embodiment of the present invention.
【図7】従来のこの種の高周波加熱コイルの概略的斜視
図である。FIG. 7 is a schematic perspective view of a conventional high-frequency heating coil of this type.
【図8】この種の高周波加熱コイルによって高周波加熱
(高周波焼入)される円筒状ワークとしてのトリポート
カップ部の概略的底面図である。FIG. 8 is a schematic bottom view of a tripod cup portion as a cylindrical work heated by high frequency (induction hardening) by this type of high frequency heating coil.
100A、100B、100C 加熱部 200A、200B 接続部 300A、300B 給電部 110A、120A 加熱導体部 130A、140A 給電導体部 150A 第1の接続導体部 151A 並列部 160A 第2の接続導体部 161A 並列部 100A, 100B, 100C Heating section 200A, 200B Connection section 300A, 300B Power supply section 110A, 120A Heating conductor section 130A, 140A Power supply conductor section 150A First connection conductor section 151A Parallel section 160A Second connection conductor section 161A Parallel section
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) C21D 1/10 C21D 1/42 C21D 9/40 H05B 6/00 - 6/10 H05B 6/14 - 6/44 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) C21D 1/10 C21D 1/42 C21D 9/40 H05B 6/00-6/10 H05B 6/14-6 / 44
Claims (3)
対向する側面部を加熱する高周波加熱コイルにおいて、
前記側面部に対向する一対の加熱導体部と、高周波電源
と接続される一対の給電導体部と、一方の給電導体部と
一方の加熱導体部との間を接続する第1の接続導体部
と、前記一方の加熱導体部と他方の加熱導体部との間と
を接続する第2の接続導体部とを具備しており、前記第
1及び第2の接続導体部は、高周波電流を二分する並列
部を有していることを特徴とする高周波加熱コイル。1. A high-frequency heating coil for heating a side face of a groove formed on an inner surface of a cylindrical workpiece, wherein the side face faces the groove.
A pair of heating conductors facing the side surface, a pair of power supply conductors connected to the high-frequency power supply, and a first connection conductor connecting between the one power supply conductor and the one heating conductor. A second connecting conductor connecting between the one heating conductor and the other heating conductor, wherein the first and second connecting conductors bisect a high-frequency current. A high-frequency heating coil having a parallel portion.
の溝部の対向する側面部を加熱する高周波加熱コイルに
おいて、溝部に嵌まり込む複数個の加熱部と、この加熱
部を直列に接続する複数個の接続部と、高周波電源と接
続される給電部とを具備しており、前記加熱部は、前記
側面部に対向する一対の加熱導体部と、高周波電源と接
続される一対の給電導体部と、一方の給電導体部と一方
の加熱導体部との間を接続する第1の接続導体部と、前
記一方の加熱導体部と他方の加熱導体部との間とを接続
する第2の接続導体部とを具備しており、前記第1及び
第2の接続導体部は、高周波電流を二分する並列部を有
していることを特徴とする高周波加熱コイル。2. A high-frequency heating coil for heating opposite side surfaces of a plurality of grooves formed on an inner surface of a cylindrical workpiece, wherein the plurality of heating units fitted into the grooves and the heating units are connected in series. A plurality of connection portions, and a power supply portion connected to a high-frequency power supply, wherein the heating portion has a pair of heating conductor portions facing the side surface portion and a pair of power supply portions connected to the high-frequency power supply. A conductor portion, a first connection conductor portion connecting between one power supply conductor portion and one heating conductor portion, and a second connection portion connecting between the one heating conductor portion and the other heating conductor portion. Wherein the first and second connection conductors have a parallel portion that bisects a high-frequency current.
が120°間隔で形成されているトリポートカップ部で
あることを特徴とする請求項2記載の高周波加熱コイ
ル。3. The high-frequency heating coil according to claim 2, wherein the cylindrical work is a tripod cup portion having three grooves formed on the inner surface thereof at intervals of 120 °.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32777898A JP3300293B2 (en) | 1998-11-18 | 1998-11-18 | High frequency heating coil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32777898A JP3300293B2 (en) | 1998-11-18 | 1998-11-18 | High frequency heating coil |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000144237A JP2000144237A (en) | 2000-05-26 |
JP3300293B2 true JP3300293B2 (en) | 2002-07-08 |
Family
ID=18202882
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JP32777898A Expired - Fee Related JP3300293B2 (en) | 1998-11-18 | 1998-11-18 | High frequency heating coil |
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JP (1) | JP3300293B2 (en) |
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US11846001B2 (en) | 2020-02-05 | 2023-12-19 | Inductoheat, Inc. | Split multiple coil electric induction heat treatment systems for simultaneous heating of multiple features of a bearing component |
-
1998
- 1998-11-18 JP JP32777898A patent/JP3300293B2/en not_active Expired - Fee Related
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