JP3300290B2 - Induction hardened coil body - Google Patents
Induction hardened coil bodyInfo
- Publication number
- JP3300290B2 JP3300290B2 JP28610598A JP28610598A JP3300290B2 JP 3300290 B2 JP3300290 B2 JP 3300290B2 JP 28610598 A JP28610598 A JP 28610598A JP 28610598 A JP28610598 A JP 28610598A JP 3300290 B2 JP3300290 B2 JP 3300290B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency heating
- heating coil
- core
- outer peripheral
- peripheral surface
- 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、外周面に段部が形
成された段付ワークを高周波焼入する高周波焼入コイル
体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction hardening coil body for induction hardening a stepped work having a step formed on an outer peripheral surface.
【０００２】[0002]
【従来の技術】まず、この種の高周波焼入コイル体を図
６を参照しつつ説明する。この高周波焼入コイル体によ
って高周波焼入が施される段付ワークＷは、略円柱状に
形成されており、外周面Ｗ2 に段部Ｗ1 が突出されてい
る。前記段部Ｗ1は、肩部Ｗ11と称する部分が外周面Ｗ
2 に対して略垂直に突出しており、この肩部Ｗ11の下側
は、外周面Ｗ2 に対してなだらかに連なっている。そし
て、段部Ｗ1 の肩部Ｗ11と、この肩部Ｗ11に連なる外周
面Ｗ2 とに高周波焼入を施したいのである。2. Description of the Related Art First, an induction hardening coil of this type will be described with reference to FIG. The induction hardening stepped workpiece W induction hardening is performed by input coil body is formed in a substantially cylindrical shape, the outer peripheral surface W 2 step portion W 1 is projected. The stepped portion W 1 is shoulders W 11 referred to as part outer peripheral surface W
Projects substantially perpendicularly to 2, the lower side of the shoulder portion W 11 is continuous to the gentle to the outer peripheral surface W 2. Then, a shoulder portion W 11 of the stepped portion W 1, it wants subjected to induction hardening on the outer circumferential surface W 2 continuous to the shoulder portion W 11.
【０００３】かかる段付ワークＷに高周波焼入を施す高
周波焼入コイル体は、２つの略リング状に形成されたコ
イルからなる高周波加熱コイル１００を有してる。一方
の第１の高周波加熱コイル１１０は、段部Ｗ1 の肩部Ｗ
11とこれに連なる外周面Ｗ2の一部を加熱するものであ
り、他方の第２の高周波加熱コイル１２０は、第１の高
周波加熱コイル１１０では加熱できない部分の外周面Ｗ
2 を加熱するものである。従って、第１の高周波加熱コ
イル１１０と第２の高周波加熱コイル１２０とは、積み
重ねられたようになっている。The induction hardening coil body for performing the induction hardening on the stepped work W has a high frequency heating coil 100 composed of two substantially ring-shaped coils. One of the first high-frequency heating coil 110, the stepped portion W 1 shoulder W
11 and is intended to heat a portion of the outer peripheral surface W 2 contiguous thereto, the other of the second high-frequency heating coil 120, the outer peripheral surface of the first high-frequency heating coil 110 portions in the not be heated W
2 is to heat. Therefore, the first high-frequency heating coil 110 and the second high-frequency heating coil 120 are configured to be stacked.
【０００４】ここで、第１の高周波加熱コイル１１０
は、段部Ｗ1 の肩部Ｗ11及びそれに連なる外周面Ｗ2 の
加熱を行う。この第１の高周波加熱コイル１１０では、
段部Ｗ1 の肩部Ｗ11に深い硬化層（図６において××印
で示している）が形成されるのを防止するため、フェラ
イト製のコア２００が取り付けられている。Here, the first high-frequency heating coil 110
Performs heating of the outer circumferential surface W 2 continuous to the shoulder portion W 11 and its stepped portion W 1. In the first high-frequency heating coil 110,
To prevent the deep hardened layer on the shoulder portion W 11 of the stepped portion W 1 (is indicated by ×× mark in FIG. 6) is formed, the core 200 made of ferrite is installed.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上述し
た従来の高周波焼入コイル体には以下のような問題点が
ある。すなわち、フェライト等からなるコアを取り付け
ると適正な硬化層（図６に斜線で示す）は形成される
が、コアが段付ワークの高周波焼入時の加熱により短期
間で劣化するのである。場合によっては、２０００個の
段付ワークに高周波焼入を施しただけでコアが劣化で破
損し交換が必要になっていた。However, the above-mentioned conventional induction hardened coil has the following problems. That is, when a core made of ferrite or the like is attached, an appropriate hardened layer (shown by oblique lines in FIG. 6) is formed, but the core deteriorates in a short period of time due to heating during the induction hardening of the stepped work. In some cases, merely performing induction hardening on 2,000 stepped works damaged the core due to deterioration and required replacement.
【０００６】本発明は上記事情に鑑みて創案されたもの
であって、コアをより長寿命化することができる高周波
焼入コイル体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 an object of the present invention is to provide an induction hardened coil body capable of extending the life of a core.
【０００７】[0007]
【課題を解決するための手段】本発明に係る高周波焼入
コイル体は、外周面に段部が形成された段付ワークの前
記段部とこの段部に続く外周面とに高周波焼入を施す高
周波焼入コイル体において、高周波加熱を行うとともに
冷却液を噴射する冷却ジャケットとを兼ねた高周波加熱
コイルと、この高周波加熱コイルの下端部に取り付けら
れるコアと、このコアの外周面に沿って設けられ、冷却
液を循環させることで前記コアを冷却する冷却パイプ
と、この冷却パイプ及び前記コアを高周波加熱コイルに
取り付ける取付アングルとを具備しており、前記取付ア
ングルは、前記冷却パイプとコアとが載置され、前記コ
アを冷却することが可能な水平面部と、この水平面部の
外周縁部から上方向に向かって形成され、高周波加熱コ
イルに取り付けられる垂直面部とからなる。According to the present invention, there is provided an induction hardening coil according to the present invention, wherein induction hardening is performed on the step portion of a stepped work having a step formed on an outer peripheral surface and the outer peripheral surface following the step. In the induction hardening coil body to be applied, a high-frequency heating coil which also serves as a cooling jacket for performing high-frequency heating and spraying a cooling liquid, a core attached to a lower end portion of the high-frequency heating coil, and along an outer peripheral surface of the core provided it is, cooling
A cooling pipe for cooling the core by circulating the liquid, are provided with a mounting bracket for mounting the cooling pipe and the core to the high-frequency heating coil, said mounting A
In the angle, the cooling pipe and the core are placed, and the core is
A horizontal surface that can cool the
It is formed upward from the outer peripheral edge, and
And a vertical surface attached to the il .
【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
高周波焼入コイル体の概略的断面図、図２は本発明の実
施の形態に係る高周波焼入コイル体と段付ワークとの関
係を示す概略的断面図、図３は本発明の実施の形態に係
る高周波焼入コイル体に用いられる第１の高周波加熱コ
イルの概略的平面図、図４は本発明の実施の形態に係る
高周波焼入コイル体に用いられる第１の高周波加熱コイ
ルの概略的底面図、図５は本発明の実施の形態に係る高
周波焼入コイル体に用いられる第２の高周波加熱コイル
の概略的平面図である。FIG. 1 is a schematic cross-sectional view of an induction hardened coil body according to an embodiment of the present invention, and FIG. 2 is an induction hardened coil body and a stepped work according to the embodiment of the present invention. FIG. 3 is a schematic plan view of a first high-frequency heating coil used in the induction hardening coil body according to the embodiment of the present invention, and FIG. 4 is a schematic sectional view of the embodiment of the present invention. FIG. 5 is a schematic bottom view of a first high-frequency heating coil used in the induction hardening coil body, and FIG. 5 is a schematic plan view of a second high-frequency heating coil used in the induction hardening coil body according to the embodiment of the present invention. FIG.
【０００９】本発明の実施の形態に係る高周波焼入コイ
ル体は、外周面Ｗ2 に段部Ｗ1 が形成された段付ワーク
Ｗの前記段部Ｗ1 とこの段部Ｗ1 に続く外周面Ｗ2 とに
高周波焼入を施す高周波焼入コイル体であって、高周波
加熱を行うとともに冷却液を噴射する冷却ジャケットと
を兼ねた高周波加熱コイル１００と、この高周波加熱コ
イル１００の下端部に取り付けられるコア２００と、こ
のコア２００の外周面に沿って設けられた冷却パイプ３
００と、この冷却パイプ３００及び前記コア２００を高
周波加熱コイル１００に取り付ける取付アングル４００
とを備えており、前記冷却パイプ３００に冷却液を循環
させることでコア２００を冷却するようになっている。[0009] induction hardening coil body according to the embodiment of the present invention, the outer periphery that leads the stepped portion W 1 of the stepped workpiece W peripheral surface W 2 step portion W 1 is formed on the stepped portion W 1 A high-frequency quenching coil body for performing high-frequency quenching on the surface W 2 , a high-frequency heating coil 100 serving as a cooling jacket for performing high-frequency heating and spraying a cooling liquid; A core 200 to be attached, and a cooling pipe 3 provided along the outer peripheral surface of the core 200
00, and an attachment angle 400 for attaching the cooling pipe 300 and the core 200 to the high-frequency heating coil 100.
The core 200 is cooled by circulating a cooling liquid through the cooling pipe 300.
【００１０】この高周波焼入コイル体によって高周波焼
入が施される段付ワークＷは、従来の技術の欄において
説明したものと同一である。The stepped work W subjected to induction hardening by the induction hardened coil body is the same as that described in the section of the prior art.
【００１１】前記高周波加熱コイル１００は、第１の高
周波加熱コイル１１０と、第２の高周波加熱コイル１２
０とを有している。第１の高周波加熱コイル１１０は、
段付ワークＷの段部Ｗ1 の肩部Ｗ11と、この肩部Ｗ11に
続く外周面Ｗ2 とを加熱するものであって、内部に段付
ワークＷが入り込むような略リング状に形成されてい
る。この第１の高周波加熱コイル１１０は、銅製等の導
電性を有する金属からなるパイプを略リング状にしたも
のである。また、この第１の高周波加熱コイル１１０の
内周面１１１には、段付ワークＷに冷却液を噴射するた
めの複数個の噴射孔１１１Ａが開設されている。The high-frequency heating coil 100 includes a first high-frequency heating coil 110 and a second high-frequency heating coil 12.
0. The first high-frequency heating coil 110 includes:
A shoulder portion W 11 of the stepped portion W 1 of the stepped workpiece W, be one for heating the outer peripheral surface W 2 subsequent to the shoulder portion W 11, a substantially ring shape as a stepped workpiece W enters the interior Is formed. The first high-frequency heating coil 110 is a substantially ring-shaped pipe made of a conductive metal such as copper. The inner peripheral surface 111 of the first high-frequency heating coil 110 is provided with a plurality of injection holes 111A for injecting a cooling liquid onto the stepped work W.
【００１２】なお、この第１の高周波加熱コイル１１０
は、完全なリング状ではなく、一箇所で切断されてい
る。この切断された箇所では、図３及び図４に示すよう
に、図外の高周波電源が接続される一対の給電導体１１
２が設けられている。なお、一対の給電導体１１２の間
には短絡を防止するための絶縁板１１３が介在されてい
る。The first high-frequency heating coil 110
Are not completely ring-shaped, but are cut at one point. In this cut portion, as shown in FIG. 3 and FIG.
2 are provided. Note that an insulating plate 113 for preventing a short circuit is interposed between the pair of power supply conductors 112.
【００１３】この第１の高周波加熱コイル１１０の外周
面１１４の高さ寸法は、図１及び図２に示すように、内
周面１１１の高さ寸法より小さく設定されている。しか
も、前記外周面１１４の上端部と内周面１１１の上端部
とは同一平面上に位置している。このため、この第１の
高周波加熱コイル１１０の下端部は内側に向かって下り
傾斜になっている。この第１の高周波加熱コイル１１０
の下端部は、後述するコア２００が取り付けるためのス
ペースとなっている。The height of the outer peripheral surface 114 of the first high-frequency heating coil 110 is set smaller than the height of the inner peripheral surface 111, as shown in FIGS. Moreover, the upper end of the outer peripheral surface 114 and the upper end of the inner peripheral surface 111 are located on the same plane. Therefore, the lower end of the first high-frequency heating coil 110 is inclined downward toward the inside. This first high-frequency heating coil 110
Is a space for attaching a core 200 described later.
【００１４】また、この第１の高周波加熱コイル１１０
の外周面１１４には、４つのナット１１５が等間隔、す
なわち９０°間隔でロー付けされている。このナット１
１５は、後述する取付アングル４００を第１の高周波加
熱コイル１１０に取り付ける際に用いられるものであ
る。The first high-frequency heating coil 110
, Four nuts 115 are brazed at equal intervals, that is, at 90 ° intervals. This nut 1
Reference numeral 15 is used when a mounting angle 400 described later is mounted on the first high-frequency heating coil 110.
【００１５】一方、第２の高周波加熱コイル１２０は、
第１の高周波加熱コイル１１０では加熱されない外周面
Ｗ2 を加熱するものである。かかる第２の高周波加熱コ
イル１２０は、内部に段付ワークＷが入り込むような略
リング状に形成されている。この第２の高周波加熱コイ
ル１２０は、銅製等の導電性を有する金属からなるパイ
プを略リング状にしたものである。また、この第２の高
周波加熱コイル１２０の内周面１２１には、段付ワーク
Ｗに冷却液を噴射するための複数個の噴射孔１２１Ａが
開設されている。On the other hand, the second high-frequency heating coil 120
It is intended to heat the outer peripheral surface W 2 not heated in the first high-frequency heating coil 110. The second high-frequency heating coil 120 is formed in a substantially ring shape such that the stepped work W enters therein. The second high-frequency heating coil 120 is a substantially ring-shaped pipe made of a conductive metal such as copper. In addition, a plurality of injection holes 121A for injecting the cooling liquid onto the stepped work W are formed in the inner peripheral surface 121 of the second high-frequency heating coil 120.
【００１６】なお、この第２の高周波加熱コイル１２０
は、完全なリング状ではなく、一箇所で切断されてい
る。この切断された箇所では、図外の高周波電源が接続
される一対の給電導体１２２が設けられている。なお、
一対の給電導体１２２の間には短絡を防止するための絶
縁板１２３が介在されている。The second high-frequency heating coil 120
Are not completely ring-shaped, but are cut at one point. At the cut portion, a pair of power supply conductors 122 to which a high-frequency power source (not shown) is connected are provided. In addition,
An insulating plate 123 for preventing a short circuit is interposed between the pair of power supply conductors 122.
【００１７】前記第１の高周波加熱コイル１１０の下端
部に取り付けられるコア２００は、例えばフェライトか
ら構成されており、断面が第１の高周波加熱コイル１１
０の下端部の空間に対応するような変形台形状に形成さ
れている。かかるコア２００は、リング状に形成してあ
り、しかも一箇所で切断されている。このコア２００
は、従来の高周波焼入コイル体に用いられたものと同一
である。The core 200 attached to the lower end of the first high-frequency heating coil 110 is made of, for example, ferrite and has a cross section of the first high-frequency heating coil 11.
It is formed in a deformed trapezoidal shape corresponding to the space at the lower end of the zero. The core 200 is formed in a ring shape and is cut at one place. This core 200
Are the same as those used for the conventional induction hardened coil body.
【００１８】また、前記冷却パイプ３００は、第１の高
周波加熱コイル１１０に外嵌可能なように、内径が第１
の高周波加熱コイル１１０の外径と略等しく設定されて
いる。この冷却パイプ３００は放熱性に優れた銅製等の
角型のパイプからなっている。また、この冷却パイプ３
００は、略リング状ではあるが完全なリング状ではな
く、一箇所で切断されている。そして、切断された部分
には冷却液導入部３１０と冷却液導出部３２０とが設け
られている。The cooling pipe 300 has an inner diameter of the first high-frequency heating coil 110 so that it can be externally fitted to the first high-frequency heating coil 110.
Is set substantially equal to the outer diameter of the high-frequency heating coil 110. The cooling pipe 300 is a rectangular pipe made of copper or the like having excellent heat dissipation. In addition, this cooling pipe 3
00 is substantially ring-shaped, but not completely ring-shaped, and is cut at one location. The cut portion is provided with a coolant introduction unit 310 and a coolant discharge unit 320.
【００１９】さらに、前記取付アングル４００は、水平
面部４１０と、この水平面部４１０の外周縁部から直交
方向に立ち上がった垂直面部４２０とが一体に形成され
たものである。１つの第１の高周波加熱コイル１１０に
は、４つの取付アングル４００が取り付けられる。従っ
て、１つの取付アングル４００は、９０°の範囲をカバ
ーするようになっている。Further, the mounting angle 400 is formed by integrally forming a horizontal surface portion 410 and a vertical surface portion 420 rising from the outer peripheral edge of the horizontal surface portion 410 in an orthogonal direction. Four mounting angles 400 are mounted on one first high-frequency heating coil 110. Thus, one mounting angle 400 covers a range of 90 °.
【００２０】また、この取付アングル４００の水平面部
４１０は、冷却パイプ３００より幅広に設定されてい
る。さらに、この取付アングル４００の水平面部４１０
は、第１の高周波加熱コイル１１０に取り付けられた状
態で、段付ワークＷが嵌まり込むことを阻害しないよう
に、図４に示すように、略扇形に形成されている。The horizontal plane 410 of the mounting angle 400 is wider than the cooling pipe 300. Further, the horizontal surface portion 410 of the mounting angle 400
Is formed in a substantially sector shape as shown in FIG. 4 so as not to hinder the stepped work W from being fitted in the state where the work W is attached to the first high-frequency heating coil 110.
【００２１】また、この取付アングル４００の垂直面部
４２０は、冷却パイプ３００の外周部と同一の曲率に設
定されている。さらに、この垂直面部４２０の中央部に
は、前記ナット１１５に対応するボルト１１６が貫通す
る貫通孔（図示省略）が開設されている。The vertical surface portion 420 of the mounting angle 400 is set to have the same curvature as the outer peripheral portion of the cooling pipe 300. Further, a through hole (not shown) through which a bolt 116 corresponding to the nut 115 passes is formed in a central portion of the vertical surface portion 420.
【００２２】この取付アングル４００は次のようにして
コア２００及び冷却パイプ３００を第１の高周波加熱コ
イル１１０に取り付ける。まず、４つの取付アングル４
００を略円形に配置し、その取付アングル４００の水平
面部４１０に冷却パイプ３００を載せる。さらに、冷却
パイプ３００の内周面側に複数個のコア２００を並べ
る。この際、コア２００を第１の高周波加熱コイル１１
０の下端部の空間に嵌まり込むように置くことは勿論で
ある。In the mounting angle 400, the core 200 and the cooling pipe 300 are mounted on the first high-frequency heating coil 110 as follows. First, four mounting angles 4
00 is arranged in a substantially circular shape, and the cooling pipe 300 is placed on the horizontal surface 410 of the mounting angle 400. Further, a plurality of cores 200 are arranged on the inner peripheral surface side of the cooling pipe 300. At this time, the core 200 is connected to the first high-frequency heating coil 11.
It goes without saying that it is placed so as to fit into the space at the lower end of the zero.
【００２３】この状態で、コア２００及び冷却液パイプ
３００を取付アングル４００ごと、第１の高周波加熱コ
イル１１０に取り付ける。すなわち、これらを第１の高
周波加熱コイル１１０の下端部側から嵌め込み、前記ボ
ルト１１６を垂直面部４２０の前記貫通孔を介して前記
ナット１１５に螺合させる。これによって、第１の高周
波加熱コイル１１０にコア２００及び冷却パイプ３００
が取り付けられた。In this state, the core 200 and the coolant pipe 300 are attached to the first high-frequency heating coil 110 together with the attachment angle 400. That is, these are fitted from the lower end side of the first high-frequency heating coil 110, and the bolt 116 is screwed into the nut 115 through the through hole of the vertical surface part 420. Thereby, the core 200 and the cooling pipe 300 are provided to the first high-frequency heating coil 110.
Was attached.
【００２４】次に、上述したように構成された高周波焼
入コイル体の作用について説明する。第１の高周波加熱
コイル１１０と第２の高周波加熱コイル１２０とは積層
された状態で高周波加熱コイル１００を構成する。この
高周波加熱コイル１００に段付ワークＷを挿入する。す
なわち、段付ワークＷの段部Ｗ1 の肩部Ｗ11が第１の高
周波加熱コイル１１０の下端部に対向し、それより上の
部分が第１の高周波加熱コイル１１０の内周面１１１
と、第２の高周波加熱コイル１２０の内周面１２１とに
対向するようにする。Next, the operation of the induction hardened coil body configured as described above will be described. The first high-frequency heating coil 110 and the second high-frequency heating coil 120 constitute the high-frequency heating coil 100 in a stacked state. The stepped work W is inserted into the high-frequency heating coil 100. In other words, the shoulder portion W 11 of the stepped portion W 1 of the stepped workpiece W faces the lower end portion of the first high-frequency heating coil 110, the portion above it the inner peripheral surface 111 of the first high-frequency heating coil 110
And the inner peripheral surface 121 of the second high-frequency heating coil 120.
【００２５】この状態で、高周波加熱コイル１００に図
外の高周波電源から高周波電流を供給し、段付ワークＷ
に誘導電流を発生させる。また、この高周波電流の供給
より以前から第１の高周波加熱コイル１１０と第２の高
周波加熱コイル１２０と冷却パイプ３００とには、自身
の過熱を防止するための冷却液を循環させておく。冷却
パイプ３００は、高周波加熱コイル１００の冷却液と共
用してもよいが、冷却効率の点に着目すると、独立した
冷却系統とする方が望ましい。いずれにしても、冷却パ
イプ３００には、冷却液導入部３１０から冷却液が導入
され、冷却液導出部３２０から冷却液が導出されるよう
になる。In this state, a high-frequency current is supplied to the high-frequency heating coil 100 from a high-frequency power source (not shown) to
To generate an induced current. Also, before the supply of the high-frequency current, the first high-frequency heating coil 110, the second high-frequency heating coil 120, and the cooling pipe 300 are circulated with a coolant for preventing overheating of the first high-frequency heating coil 110, the second high-frequency heating coil 120 and the cooling pipe 300. The cooling pipe 300 may be used in common with the cooling liquid of the high-frequency heating coil 100, but it is preferable to use an independent cooling system from the viewpoint of cooling efficiency. In any case, the cooling liquid is introduced into the cooling pipe 300 from the cooling liquid introduction part 310, and the cooling liquid is derived from the cooling liquid derivation part 320.
【００２６】ここで、段付ワークＷの加熱中にコア２０
０の外周面に接する冷却パイプ３００には冷却液が循環
しているので、コア２００は冷却パイプ３００及び取付
アングル４００を介して冷却される。Here, during heating of the stepped work W, the core 20
Since the cooling fluid is circulating in the cooling pipe 300 in contact with the outer peripheral surface of the core 0, the core 200 is cooled via the cooling pipe 300 and the mounting angle 400.
【００２７】段付ワークＷの加熱が終了したならば、高
周波電流の供給を停止し、第１の高周波加熱コイル１１
０及び第２の高周波加熱コイル１２０の噴射孔１１１Ａ
及び１２１Ａから冷却液を噴射し、高周波焼入を施す。When the heating of the stepped work W is completed, the supply of the high-frequency current is stopped, and the first high-frequency heating coil 11 is turned off.
Injection hole 111A of 0 and second high-frequency heating coil 120
And a cooling liquid is injected from 121A, and induction hardening is performed.
【００２８】高周波焼入が完了した段付ワークＷを図示
しない搬出装置で高周波加熱コイル１００から搬出し、
新たな段付ワークＷを図示しない搬入装置で高周波加熱
コイル１００から搬出する。The stepped work W which has been subjected to the induction hardening is unloaded from the high-frequency heating coil 100 by an unillustrated unloading device.
A new stepped work W is carried out of the high-frequency heating coil 100 by a carry-in device (not shown).
【００２９】なお、上述した実施の形態では、４つの取
付アングル４００を用いたが、本発明はこれに限定され
ず、２〜３つ又はそれ以上の取付アングルを用いてもよ
い。また、リング状の１つの取付アングルでもよい。Although four mounting angles 400 are used in the above-described embodiment, the present invention is not limited to this, and two or three or more mounting angles may be used. Also, one ring-shaped mounting angle may be used.
【００３０】なお、前記コア２００は、１つのものであ
ると説明したが、複数個を並べるとリング状を形作るよ
うにしてもよい。Although the core 200 has been described as being one, a plurality of cores may be arranged to form a ring.
【００３１】[0031]
【発明の効果】本発明に係る高周波焼入コイル体は、外
周面に段部が形成された段付ワークの前記段部とこの段
部に続く外周面とに高周波焼入を施す高周波焼入コイル
体において、高周波加熱を行うとともに冷却液を噴射す
る冷却ジャケットとを兼ねた高周波加熱コイルと、この
高周波加熱コイルの下端部に取り付けられるコアと、こ
のコアの外周面に沿って設けられ、冷却液を循環させる
ことで前記コアを冷却する冷却パイプと、この冷却パイ
プ及び前記コアを高周波加熱コイルに取り付ける取付ア
ングルとを具備しており、前記取付アングルは、前記冷
却パイプとコアとが載置され、前記コアを冷却すること
が可能な水平面部と、この水平面部の外周縁部から上方
向に向かって形成され、高周波加熱コイルに取り付けら
れる垂直面部とからなる。The induction hardening coil body according to the present invention is an induction hardening for performing induction hardening on the step portion of the stepped work having the step portion formed on the outer peripheral surface and on the outer peripheral surface following the step portion. in the coil body, and the high frequency heating coil which also serves as a cooling jacket for injecting the coolant performs high-frequency heating, the core attached to the lower end of the high frequency heating coil, provided we are along the outer peripheral surface of the core, Circulate coolant
A cooling pipe for cooling the core by, and comprises a mounting bracket for mounting the cooling pipe and the core to the high-frequency heating coil, said mounting bracket, said cold
The cooling pipe and the core are placed and the core is cooled.
From the outer peripheral edge of this horizontal surface
Formed on the high-frequency heating coil
And a vertical surface portion .
【００３２】従って、コアが冷却されることによりコア
の寿命が長くなった。実験では、コアを冷却しなかった
場合には２０００個の段付ワークに高周波焼入を施した
だけでコアの交換が必要になったが、本願発明のように
すると１００００本以上の段付ワークに高周波焼入を施
してもコアの交換は必要ないことが確認され、数万個の
段付ワークに高周波焼入を施すことができる程度にコア
の寿命を延ばすことができると考えられる。Therefore, the life of the core was extended by cooling the core. In the experiment, if the core was not cooled, it was necessary to replace the core only by performing induction hardening on 2,000 stepped works. However, according to the present invention, more than 10,000 stepped works were required. It has been confirmed that the core does not need to be replaced even when induction hardening is performed, and it is considered that the life of the core can be extended to such an extent that tens of thousands of stepped works can be subjected to induction hardening.
【００３３】また、コア２００の外周面に冷却液パイプ
を沿わせるようにしているので、従来から用いていたコ
アをなんら変形することなく流用することができるので
特にコアの設計変更をすることがないので好都合であ
る。Further, since the coolant pipe is arranged along the outer peripheral surface of the core 200, the core which has been conventionally used can be diverted without any deformation. Not convenient.
【００３４】また、請求項２に係る高周波焼入コイル体
では、取付アングルは、複数個に分割されている。この
ため、円周方向に複数個を並べるとリング状を形作るよ
うに構成されたコアの場合には、一部のコアの交換が必
要になった場合でもすべての取付アングルを取り外す必
要がないので、コア交換の作業時間の短縮化に資する。In the induction hardening coil according to the second aspect, the mounting angle is divided into a plurality of parts. For this reason, in the case of a core configured to form a ring shape by arranging a plurality of cores in the circumferential direction, it is not necessary to remove all mounting angles even if some cores need to be replaced. In addition, it contributes to shortening the work time for core replacement.
【図１】本発明の実施の形態に係る高周波焼入コイル体
の概略的断面図である。FIG. 1 is a schematic sectional view of an induction hardened coil body 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焼入コイル体
と段付ワークとの関係を示す概略的断面図である。FIG. 2 is a schematic cross-sectional view showing a relationship between the induction hardened coil body and the stepped work 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焼入コイル体
に用いられる第１の高周波加熱コイルの概略的平面図で
ある。FIG. 3 is a schematic plan view of a first high-frequency heating coil used in the high-frequency quenching coil body 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焼入コイル体
に用いられる第１の高周波加熱コイルの概略的底面図で
ある。FIG. 4 is a schematic bottom view of a first high-frequency heating coil used in the induction hardening coil body 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焼入コイル体
に用いられる第２の高周波加熱コイルの概略的平面図で
ある。FIG. 5 is a schematic plan view of a second high-frequency heating coil used in the induction hardening coil according to the embodiment of the present invention.
【図６】従来のこの種の高周波焼入コイル体と段付ワー
クとの関係を示す概略的断面図である。FIG. 6 is a schematic cross-sectional view showing the relationship between a conventional induction hardened coil body of this type and a stepped work.
１００ 高周波加熱コイル １１０ 第１の高周波加熱コイル １２０ 第２の高周波加熱コイル ２００ コア ３００ 冷却パイプ ４００ 取付アングル Ｗ 段付ワーク Ｗ1 段部 Ｗ11 肩部 Ｗ2 外周面REFERENCE SIGNS LIST 100 high-frequency heating coil 110 first high-frequency heating coil 120 second high-frequency heating coil 200 core 300 cooling pipe 400 mounting angle W stepped work W 1 step W 11 shoulder W 2 outer peripheral surface
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｈ０５Ｂ 6/42 Ｈ０５Ｂ 6/42 (58)調査した分野(Int.Cl.7，ＤＢ名) C21D 1/10 C21D 1/42 C21D 9/28 H05B 6/00 - 6/10 H05B 6/14 - 6/44 Continuation of the front page (51) Int.Cl. 7 identification code FI H05B 6/42 H05B 6/42 (58) Investigated field (Int.Cl. 7 , DB name) C21D 1/10 C21D 1/42 C21D 9 / 28 H05B 6/00-6/10 H05B 6/14-6/44
Claims (2)
前記段部とこの段部に続く外周面とに高周波焼入を施す
高周波焼入コイル体において、高周波加熱を行うととも
に冷却液を噴射する冷却ジャケットとを兼ねた高周波加
熱コイルと、この高周波加熱コイルの下端部に取り付け
られるコアと、このコアの外周面に沿って設けられ、冷
却液を循環させることで前記コアを冷却する冷却パイプ
と、この冷却パイプ及び前記コアを高周波加熱コイルに
取り付ける取付アングルとを具備しており、前記取付ア
ングルは、前記冷却パイプとコアとが載置され、前記コ
アを冷却することが可能な水平面部と、この水平面部の
外周縁部から上方向に向かって形成され、高周波加熱コ
イルに取り付けられる垂直面部とからなることを特徴と
する高周波焼入コイル体。An induction hardening coil body for performing induction hardening on the step portion of a stepped work having a step portion formed on an outer peripheral surface and an outer peripheral surface following the step portion, while performing high frequency heating and cooling liquid. injecting a cooling jacket and a high-frequency heating coil which also serves as a, the core attached to the lower end of the high frequency heating coil, provided we are along the outer peripheral surface of the core, cold
A cooling pipe for cooling the core by circulating却液, and comprises a mounting bracket for mounting the cooling pipe and the core to the high-frequency heating coil, said mounting A
In the angle, the cooling pipe and the core are placed, and the core is
A horizontal surface that can cool the
It is formed upward from the outer peripheral edge, and
An induction hardened coil body comprising: a vertical surface portion attached to an il .
に分割されていることを特徴とする請求項１記載の高周
波焼入コイル体。2. The induction hardened coil body according to claim 1, wherein the mounting angle is divided into a plurality in the circumferential direction .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28610598A JP3300290B2 (en) | 1998-09-22 | 1998-09-22 | Induction hardened coil body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28610598A JP3300290B2 (en) | 1998-09-22 | 1998-09-22 | Induction hardened coil body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000096130A JP2000096130A (en) | 2000-04-04 |
| JP3300290B2 true JP3300290B2 (en) | 2002-07-08 |
Family
ID=17700008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28610598A Expired - Fee Related JP3300290B2 (en) | 1998-09-22 | 1998-09-22 | Induction hardened coil body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3300290B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3974548A4 (en) * | 2019-05-23 | 2022-06-01 | Nippon Steel Corporation | Traverse hardening apparatus and traverse hardening method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101307444B1 (en) * | 2011-12-09 | 2013-09-11 | 양희선 | Apparatus for induction hardening inner diameter of shoulder |
| KR102386875B1 (en) * | 2021-11-05 | 2022-04-15 | 주식회사 제이에이취티앤씨 | Movable High-frequency Heat Treatment Apparatus for Inner-race of Constant Velocity Joint |
| KR102384757B1 (en) * | 2021-12-30 | 2022-04-08 | 김미선 | Track bush end face induction heat treatment device and track bush end face induction heat treatment method using the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639198Y2 (en) * | 1976-11-30 | 1981-09-11 | ||
| JPS5983963U (en) * | 1982-11-26 | 1984-06-06 | トヨタ自動車株式会社 | Mobile hardening coil |
| JPH0141188Y2 (en) * | 1985-10-29 | 1989-12-06 | ||
| JPH05148531A (en) * | 1991-11-25 | 1993-06-15 | Toyota Motor Corp | Induction hardening device for work provided with flange |
-
1998
- 1998-09-22 JP JP28610598A patent/JP3300290B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3974548A4 (en) * | 2019-05-23 | 2022-06-01 | Nippon Steel Corporation | Traverse hardening apparatus and traverse hardening method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000096130A (en) | 2000-04-04 |
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