JPH0514767B2 - - Google Patents
Info
- Publication number
- JPH0514767B2 JPH0514767B2 JP1261000A JP26100089A JPH0514767B2 JP H0514767 B2 JPH0514767 B2 JP H0514767B2 JP 1261000 A JP1261000 A JP 1261000A JP 26100089 A JP26100089 A JP 26100089A JP H0514767 B2 JPH0514767 B2 JP H0514767B2
- Authority
- JP
- Japan
- Prior art keywords
- gear
- shaft
- conductor
- heating conductor
- heating
- 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 - Lifetime
Links
- 239000004020 conductor Substances 0.000 claims description 105
- 238000010438 heat treatment Methods 0.000 claims description 89
- 230000006698 induction Effects 0.000 claims description 30
- 239000000110 cooling liquid Substances 0.000 description 6
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明は、軸付き歯車の高周波焼入コイルに関
する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an induction hardened coil for a shafted gear.
＜従来の技術＞
以下、図面を参照して従来の技術を説明する。
第６図と第７図は、それぞれ、軸付き歯車（例え
ばピニオンシヤフト、ポンプシヤフト）の従来の
高周波焼入コイルの第１例及び第２例を説明する
ための図面であつて、第６図ａは高周波焼入コイ
ルの斜視図、第６図ｂは軸付き歯車の縦断面図、
第６図ｃは第６図ｂのＢ−Ｂ線矢示断面図であ
り、第７図は高周波焼入コイルと軸付き歯車の断
面図である。<Prior Art> Hereinafter, the conventional technology will be described with reference to the drawings.
6 and 7 are drawings for explaining first and second examples of conventional induction hardened coils for shaft gears (e.g. pinion shafts, pump shafts), respectively. 6a is a perspective view of the induction hardened coil, FIG. 6b is a vertical cross-sectional view of the shafted gear,
FIG. 6c is a sectional view taken along the line BB in FIG. 6b, and FIG. 7 is a sectional view of the induction hardened coil and the shafted gear.
第１例は、軸付き歯車２００を１工程で焼入す
る高周波焼入コイルであつて、第６図ｂに示す軸
付き歯車２００を焼入する。軸付き歯車２００
は、歯車２０１と、歯車２０１の上部及び下部
に、それぞれ、突出形成した軸２０２及び２０３
を備えている。この高周波焼入コイル１００は、
第６図ａに示すように、軸付き歯車２００の表面
の形状に対応した形状の１対の加熱導体１０１及
び１０２を有し、これら加熱導体１０１及び１０
２の一端は、ほぼ半円形状の接続導体１０３で接
続されており、他端はほぼ1/4円形状の１対の電
源側導体１０４，１０５に接続されている。 The first example is an induction hardening coil that hardens the shafted gear 200 in one step, and hardens the shafted gear 200 shown in FIG. 6b. Gear with shaft 200
A gear 201 and shafts 202 and 203 protruding from the upper and lower parts of the gear 201, respectively.
It is equipped with This induction hardened coil 100 is
As shown in FIG. 6a, it has a pair of heating conductors 101 and 102 whose shape corresponds to the shape of the surface of the shafted gear 200, and these heating conductors 101 and 10
One end of the power source 2 is connected to a connecting conductor 103 having a substantially semicircular shape, and the other end thereof is connected to a pair of power supply side conductors 104 and 105 having a substantially quarter circular shape.
軸付き歯車２００を高周波焼入コイル１００の
加熱導体１０１，１０２間に配置し、且つ軸付き
歯車２００を軸付き歯車の軸を中心として回転し
ながら高周波焼入コイル１００に高周波電流を通
電すると、軸付き歯車２００の表面は誘導電流に
よつて加熱される。次いで、図示しない冷却ジヤ
ケツトから冷却液が軸付き歯車２００に噴射され
て軸付き歯車２００の表面に硬化層２０４が形成
される。 When the shafted gear 200 is placed between the heating conductors 101 and 102 of the induction hardening coil 100 and a high frequency current is applied to the induction hardening coil 100 while rotating the shafted gear 200 around the axis of the shafted gear, The surface of the shafted gear 200 is heated by the induced current. Next, a cooling liquid is injected from a cooling jacket (not shown) onto the shafted gear 200 to form a hardened layer 204 on the surface of the shafted gear 200.
第２例は、軸付き歯車２００を３工程で焼入す
る高周波焼入コイルであつて、第７図に示すよう
に、歯車２０１、軸２０１及び２０３に、それぞ
れ対応する環状の高周波焼入コイル１２１，１２
２及び１２３が準備される。そして、例えば、高
周波焼入コイル１２２で軸２０２を焼入後、高周
波焼入コイル１２３で軸２０３を焼入し、最後に
高周波焼入コイル１２１で歯車２０１を焼入す
る。 The second example is an induction hardening coil that hardens a shafted gear 200 in three steps, and as shown in FIG. 121, 12
2 and 123 are prepared. Then, for example, after the shaft 202 is hardened with the induction hardening coil 122, the shaft 203 is hardened with the induction hardening coil 123, and finally the gear 201 is hardened with the induction hardening coil 121.
＜考案が解決しようとする課題＞
上記したように、第１例の高周波焼入コイル１
００を使用して軸付き歯車２００の表面を焼入し
た場合には、第６図ｂに示すように、歯車２０
１、軸２０２及び２０３の表面に連続した硬化層
２０４を形成することができる。しかしながら、
歯車２０１の部分においては、第６図ｃに示すよ
うに、歯車２０１の歯先２０７から歯底２０８に
至る歯面２０９の内、歯底２０８とその近辺には
硬化層が形成されないという問題がある。これ
は、加熱導体１０１及び１０２に高周波電流を通
電することによつて軸電流が流れ、軸付き歯車２
００の軸２０２，２０３および軸２０２，２０３
のと歯車２０１との接続部のコーナー部２０５に
は連続した硬化層２０４が得られるが、歯底２０
８とその近辺には誘導電流が流れにくいからであ
る。<Problem to be solved by the invention> As described above, the induction hardened coil 1 of the first example
00 is used to harden the surface of the shafted gear 200, as shown in FIG. 6b, the gear 20
1. A continuous hardened layer 204 can be formed on the surfaces of the shafts 202 and 203. however,
In the gear 201 part, as shown in FIG. 6c, there is a problem that a hardened layer is not formed at and around the tooth bottom 208 of the tooth surface 209 extending from the tooth tip 207 to the tooth bottom 208 of the gear 201. be. This is because a shaft current flows by passing a high frequency current through the heating conductors 101 and 102, and the shafted gear 2
00 axes 202, 203 and axes 202, 203
A continuous hardened layer 204 is obtained at the corner part 205 of the connection part with the tooth gear 201, but the tooth bottom 20
This is because it is difficult for induced current to flow in and around 8.
上記第２例では、第７図に示すように、軸２０
２と２０３の表面には、それぞれ、硬化層２０７
と２０８が形成され、また、歯車２０１の歯面２
０９には、軸付き歯車１００の軸と直角方向の電
流が流れるので、歯底２０８に至るまで硬化層２
０６が形成されるが、歯車２０１と軸２０２，２
０３の接続部分のコーナー部２０５には硬化層が
形成されないという問題がある。 In the second example above, as shown in FIG.
A hardened layer 207 is formed on the surfaces of 2 and 203, respectively.
and 208 are formed, and the tooth surface 2 of the gear 201
09, the current flows in the direction perpendicular to the axis of the shafted gear 100, so the hardened layer 2 reaches the tooth bottom 208.
06 is formed, but the gear 201 and the shafts 202, 2
There is a problem in that the hardened layer is not formed at the corner portion 205 of the connection portion 03.
従つて、前記歯底２０８及びコーナー部２０５
にまで硬化層を形成するには、例えば、第１例と
第２例を組み合わせて行う等のように、多くの焼
入工程が必要で焼入作業時間が増加するのみなら
ず、これら部分に焼き割れの発生や、バツクテン
パー等の危険性があり、また、焼入品質も低下す
るという問題がある。 Therefore, the tooth bottom 208 and the corner portion 205
In order to form a hardened layer, many hardening processes are required, for example, by combining the first and second examples, which not only increases the hardening time but also requires additional hardening in these parts. There is a risk of occurrence of quenching cracks, back tempering, etc., and there is also a problem that quenching quality deteriorates.
結局、軸２０２，２０３、歯車２０１及びコー
ナー部３０５にわたつた連続した硬化層で、しか
も歯車２０１の歯底２０８の部分においても所望
の深さを有する硬化層を一度に形成するには、従
来、浸炭焼入に依存しなければならなかつた。 As a result, in order to form a continuous hardened layer over the shafts 202, 203, the gear 201, and the corner portion 305, and also to have a desired depth at the root 208 of the gear 201, it is difficult to form the hardened layer at once. , had to rely on carburizing and quenching.
本発明は上記事情に鑑みて創案されたものであ
つて、軸、歯車、及び歯車と軸との接続部分のコ
ーナー部にわたつて連続しており、しかも歯車の
歯底においても所望の深さを有する硬化層を一度
に形成することができる軸付き歯車の高周波焼入
コイルを提供することを目的としている。 The present invention has been devised in view of the above circumstances, and is continuous across the corner of the shaft, the gear, and the connecting portion between the gear and the shaft, and has a desired depth even at the bottom of the tooth of the gear. An object of the present invention is to provide an induction hardened coil for a shafted gear that can form a hardened layer having a hardened layer at once.
＜課題を解決するための手段＞
上記問題を解決するために本発明は、歯車と、
歯車の両側にそれぞれ突出形成した第１と第２の
軸とを有する軸付き歯車の高周波焼入コイルにお
いて、第１の軸の形状にほぼ対応した形状を有し
対向するように配置された第１及び第２の軸加熱
導体と、これら軸加熱導体の一端同士を接続する
接続導体と、第２の軸の形状にほぼ対応した形状
を有し対向するように配置された第３及び第４の
軸加熱導体と、第１の軸加熱導体の他端と第４の
軸加熱導体の一端を接続するほぼ半円形状の第１
の歯車加熱導体と、第２の軸加熱導体の他端と第
３の軸加熱導体の一端を接続するほぼ半円形状の
第２の歯車加熱導体とを具備し、且つ、第１及び
第２の軸加熱導体が第１の軸に、第１及び第２の
歯車加熱導体が歯車に、第３及び第４の軸加熱導
体が第２の軸に、それぞれ、対向するように配置
すると共に、第３及び第４の軸加熱導体の他端間
に高周波電圧を印加するようにしている。<Means for Solving the Problems> In order to solve the above problems, the present invention provides a gear,
In an induction hardened coil for a shafted gear having first and second shafts protruding from both sides of the gear, the first shaft has a shape substantially corresponding to the shape of the first shaft and is arranged to face the first shaft. a first and second shaft heating conductor, a connecting conductor that connects one ends of these shaft heating conductors, and a third and fourth shaft heating conductor having a shape substantially corresponding to the shape of the second shaft and arranged to face each other. a substantially semicircular first axial heating conductor connecting the other end of the first axial heating conductor and one end of the fourth axial heating conductor;
a second gear heating conductor having a substantially semicircular shape connecting the other end of the second shaft heating conductor and one end of the third shaft heating conductor; The shaft heating conductor is arranged to face the first shaft, the first and second gear heating conductors are facing the gear, and the third and fourth shaft heating conductors are facing the second shaft, and A high frequency voltage is applied between the other ends of the third and fourth shaft heating conductors.
＜作 用＞
第１及び第２の歯車加熱導体に流れる高周波電
流によつて、歯車の歯面に、軸付き歯車の軸と直
角方向の誘導電流が流れて、歯先から歯底に至る
までの歯面が加熱される。また、第１及び第２の
軸加熱導体に流れる高周波電流によつて、第１の
軸の表面に軸方向の誘導電流が流れて、第１の軸
の表面が加熱される。更に、第３及び第４の軸加
熱導体に流れる高周波電流によつて、第２の軸の
表面に軸方向に誘導電流が流れて、第２の軸の表
面が加熱される。この後、軸付き歯車に冷却液が
噴射され、軸付き歯車の表面に、連続した、しか
も、歯底においても所望の深さを有する硬化層が
形成される。<Function> Due to the high frequency current flowing through the first and second gear heating conductors, an induced current flows in the tooth surface of the gear in a direction perpendicular to the axis of the shafted gear, from the tooth tip to the tooth bottom. tooth surface is heated. Further, due to the high frequency current flowing through the first and second shaft heating conductors, an axially induced current flows through the surface of the first shaft, thereby heating the surface of the first shaft. Furthermore, the high frequency current flowing through the third and fourth shaft heating conductors causes an induced current to flow in the axial direction on the surface of the second shaft, thereby heating the surface of the second shaft. Thereafter, a cooling liquid is injected onto the shafted gear, and a hardened layer is formed on the surface of the shafted gear, which is continuous and has a desired depth even at the tooth bottom.
＜実施例＞
以下、図面を参照して本発明の一実施例を説明
する。<Example> An example of the present invention will be described below with reference to the drawings.
第１図〜第５図は本発明の一実施例を説明する
ための図面であつて、第１図は斜視図、第２図は
第１図よりも上方から見た一部切り欠き斜視図、
第３図ａ，ｂ及びｃはそれぞれ平面図、正面図及
び側面図である。第４図ａとｂは、それぞれ、第
１と第２の歯車加熱導体に流れる電流の分解説明
図であり、第５図ａは軸付き歯車の縦断面図、第
５図ｂは第５図ａのＡ−Ａ線矢示断面図である。 Figures 1 to 5 are drawings for explaining one embodiment of the present invention, in which Figure 1 is a perspective view, and Figure 2 is a partially cutaway perspective view seen from above than Figure 1. ,
Figures 3a, b and c are a plan view, a front view and a side view, respectively. 4a and 4b are exploded explanatory diagrams of the current flowing through the first and second gear heating conductors, respectively, FIG. 5a is a longitudinal cross-sectional view of the shafted gear, and FIG. It is a sectional view taken along the line A-A of FIG.
本実施例の高周波焼入コイル１０は、第５図ａ
に示すような軸付き歯車３００を焼入する高周波
焼入コイルである。軸付き歯車３００は、歯車３
０１と、歯車３０１の両側に、それぞれ、突出形
成した軸３０２（第１の軸）と軸３０３（第２の
軸）とを備えている。３０５は、歯車３０１と軸
３０２，３０３との接続部分のコーナー部であ
る。なお、第５図ｂにおいて、３０４は硬化層、
３０７は歯先、３０８は歯底、３０９は歯先３０
７と歯底３０８を含む歯面である。 The induction hardened coil 10 of this embodiment is shown in FIG.
This is an induction hardening coil for hardening a shafted gear 300 as shown in FIG. The gear 300 with a shaft is the gear 3
A shaft 302 (first shaft) and a shaft 303 (second shaft) are provided on both sides of the gear 301 and the gear 301, respectively. 305 is a corner portion of a connection portion between the gear 301 and the shafts 302, 303. In addition, in FIG. 5b, 304 is a hardened layer;
307 is the tooth tip, 308 is the tooth bottom, 309 is the tooth tip 30
7 and the tooth surface including the tooth root 308.
高周波焼入コイル１０は、第１〜第４の軸加熱
導体１１〜１４（第１〜第４の軸）、接続導体１
５、歯車加熱導体１６，１７（第１、第２の歯車
加熱導体）、及び電源側導体１８，１９とを具備
しており、これらの各導体は、中空で断面四角形
状の良電伝導金属製である。 The induction hardening coil 10 includes first to fourth shaft heating conductors 11 to 14 (first to fourth shafts), a connecting conductor 1
5, gear heating conductors 16, 17 (first and second gear heating conductors), and power supply side conductors 18, 19, each of which is made of a hollow, highly conductive metal with a rectangular cross section. Made in Japan.
詳述すれば、高周波焼入コイル１０は、軸３０
２の形状にほぼ対応した形状を有し対向するよう
に配置された軸加熱導体１１，１２と、軸加熱導
体１１，１２の一端１１ａ，１２ａを接続するほ
ぼ半円形状の接続導体１５と、第２の軸３０３の
形状にほぼ対応した形状を有し対向するように配
置された軸加熱導体１３，１４と、軸加熱導体１
１の他端１１ｂと第４の軸加熱導体の一端１４ａ
を接続するほぼ半円形状の歯車加熱導体１６と、
軸加熱導体１２の他端１２ｂと軸加熱導体１３の
一端１３ａを接続するほぼ半円形状の歯車加熱導
体１７とを具備し、歯車加熱導体１７は歯車加熱
導体１６の近辺で歯車加熱導体１６を迂回するよ
うに形成されている。なお、軸加熱導体１１，１
２の他端１１ｂ及び１２ｂは、それぞれ軸加熱導
体１１及び１２と直交し且つ互いに遠ざかる方向
に突出形成されている。また、軸加熱導体１３，
１４の一端１３ａ及び１４ａも軸加熱導体１３及
び１４と直交し且つ互いに遠ざかる方向に突出形
成されている。 To be more specific, the induction hardened coil 10 has a shaft 30
Shaft heating conductors 11 and 12 having a shape substantially corresponding to that of Figure 2 and arranged to face each other; a nearly semicircular connecting conductor 15 connecting one ends 11a and 12a of the shaft heating conductors 11 and 12; Shaft heating conductors 13 and 14 having a shape substantially corresponding to the shape of the second shaft 303 and arranged to face each other, and shaft heating conductor 1
1 other end 11b of the fourth shaft heating conductor and one end 14a of the fourth shaft heating conductor
a substantially semicircular gear heating conductor 16 connecting the
The gear heating conductor 17 is provided with a substantially semicircular gear heating conductor 17 that connects the other end 12b of the shaft heating conductor 12 and one end 13a of the shaft heating conductor 13. It is designed to take a detour. Note that the shaft heating conductor 11,1
The other ends 11b and 12b of the shaft heating conductors 11 and 12 are respectively perpendicular to the shaft heating conductors 11 and 12 and are formed to protrude in a direction moving away from each other. In addition, the shaft heating conductor 13,
One ends 13a and 14a of the shaft heating conductors 13 and 14 are also formed to protrude in a direction that is perpendicular to the shaft heating conductors 13 and 14 and away from each other.
前記した電源側導体１８，１９の一端は、それ
ぞれ、軸加熱導体１３，１４の他端１３ｂ，１４
ｂに接続されており、他端は、それぞれ、導電板
２１，２２に接続されている。導電板２１，２２
は、それぞれ、リード線３１，３２を介して高周
波電源３０に接続されている。導電板２１はボル
ト２３、ナツト２４により絶縁板２０を介して導
電板２２に固定されている。そして、導電板２
１，２２には、それぞれ、高周波焼入コイル１０
の冷却液の供給管２５及び排出管２６が対向する
ように接続されており、電源側導体１８，１９の
前記他端は、それぞれ、また、供給管２５、排出
管２６にも接続されている。 One end of the power supply side conductor 18, 19 is connected to the other end 13b, 14 of the shaft heating conductor 13, 14, respectively.
b, and the other ends are connected to conductive plates 21 and 22, respectively. Conductive plates 21, 22
are connected to a high frequency power source 30 via lead wires 31 and 32, respectively. The conductive plate 21 is fixed to the conductive plate 22 by bolts 23 and nuts 24 with an insulating plate 20 in between. And conductive plate 2
1 and 22 are induction hardened coils 10, respectively.
A cooling liquid supply pipe 25 and a discharge pipe 26 are connected to face each other, and the other ends of the power supply side conductors 18 and 19 are also connected to the supply pipe 25 and the discharge pipe 26, respectively. .
次に本実施例の動作について説明する。 Next, the operation of this embodiment will be explained.
軸付き歯車３００の軸３０２が軸加熱導体１
１，１２に、歯車３０１が歯車加熱導体１６，１
７に、軸３０３が軸加熱導体１３，１４に、それ
ぞれ、対向するようにワーク３００を配置する。
高周波焼入コイル１０の冷却液を供給管２５に供
給すると、冷却液は、電源側導体１８、軸加熱導
体１３、歯車加熱導体１７、軸加熱導体１２、接
続導体１５、軸加熱導体１１、歯車加熱導体１
６、軸加熱導体１４及び電源側導体１９のそれぞ
れの中空部分を経由し、これら導体と、導電板２
１，２２とを冷却して排出管２６から排出され
る。 The shaft 302 of the shafted gear 300 is the shaft heating conductor 1
1, 12, the gear 301 is connected to the gear heating conductor 16, 1
7, the workpiece 300 is placed so that the shaft 303 faces the shaft heating conductors 13 and 14, respectively.
When the cooling liquid for the induction hardened coil 10 is supplied to the supply pipe 25, the cooling liquid is supplied to the power supply side conductor 18, the shaft heating conductor 13, the gear heating conductor 17, the shaft heating conductor 12, the connection conductor 15, the shaft heating conductor 11, the gear Heating conductor 1
6. Through the hollow parts of the shaft heating conductor 14 and the power supply side conductor 19, these conductors and the conductive plate 2
1 and 22 are cooled and discharged from the discharge pipe 26.
図示しない回転装置で軸付き歯車３００を回転
すると共に、高周波電源３０を運転開始すると、
高周波電流は、リード線３１、導電板２１、電源
側導体１８、軸加熱導体１３、歯車加熱導体１
７、軸加熱導体１２、接続導体１５、軸加熱導体
１１、歯車加熱導体１６、軸加熱導体１４、電源
側導体１９、導電板２２及びリード線３２を経て
高周波電源３０に戻る。この際、軸加熱導体１
１，１２に流れる高周波電流によつて軸３０２の
表面に誘導電流が流れる。この誘導電流によつて
軸３０２の表面が加熱される。同様に、第３、第
４の軸加熱導体１３，１４に流れる高周波電流が
軸３０３の表面に発生する誘導電流によつて軸３
０３の表面が加熱される。 When the shafted gear 300 is rotated by a rotating device (not shown) and the high frequency power source 30 is started,
The high frequency current is transmitted through the lead wire 31, the conductive plate 21, the power supply side conductor 18, the shaft heating conductor 13, and the gear heating conductor 1.
7. Returns to the high frequency power source 30 via the shaft heating conductor 12, connection conductor 15, shaft heating conductor 11, gear heating conductor 16, shaft heating conductor 14, power supply side conductor 19, conductive plate 22 and lead wire 32. At this time, the shaft heating conductor 1
An induced current flows on the surface of the shaft 302 due to the high frequency current flowing through the shafts 1 and 12. This induced current heats the surface of the shaft 302. Similarly, the high frequency current flowing through the third and fourth shaft heating conductors 13 and 14 is caused by the induced current generated on the surface of the shaft 303.
The surface of 03 is heated.
第４図ａに示すように、歯車加熱導体１６に流
れる電流I1は、軸方向（第５図ａ上で上下方向）
の電流I12と、この電流と直角方向の電流I11とに
分解される。また、電流I1と同じ大きさで歯車加
熱導体１７に流れる高周波電流によつて歯面３０
９に生じる電流I2は、第４図ｂに示すように、歯
車３０１の軸方向の電流I22と、この電流と直角
方向の電流I21とに分解される。電流I12と電流I22
とは、ほぼ逆方向であるから打ち消し合い電流
I11と電流I21は、歯面３０９に、歯車３０１の軸
方向と直交する方向に流れる誘導電流を生じるの
で、歯面３０９が歯先３０７から歯底３０８に至
るまで加熱される。 As shown in Fig. 4a, the current I1 flowing through the gear heating conductor 16 is axially (vertical direction in Fig. 5a)
is decomposed into a current I 12 and a current I 11 perpendicular to this current. In addition, the tooth surface 30 is heated by a high frequency current flowing through the gear heating conductor 17 with the same magnitude as the current I1 .
9 is decomposed into a current I 22 in the axial direction of the gear 301 and a current I 21 in the direction perpendicular to this current , as shown in FIG. 4b. Current I 12 and Current I 22
The currents cancel each other out because they are in almost opposite directions.
I 11 and current I 21 generate an induced current flowing in the tooth surface 309 in a direction perpendicular to the axial direction of the gear 301, so that the tooth surface 309 is heated from the tooth tip 307 to the tooth bottom 308.
軸３０２，３０３の表面及び歯車３０１の歯面
３０９の加熱が終了すると、図示しない冷却ジヤ
ケツトから冷却液が軸付き歯車３００に噴射され
る。そして、第５図ａに示すように、軸３０２，
３０３、歯車３０１、コーナー部３０５に連続し
ており、しかも、第５図ｂに示すように、歯車３
０１の歯底２０８においても所望の深さを有する
硬化層３０４が形成される。 When the surfaces of the shafts 302 and 303 and the tooth surface 309 of the gear 301 are heated, a cooling liquid is injected onto the shafted gear 300 from a cooling jacket (not shown). Then, as shown in FIG. 5a, the shaft 302,
303, the gear 301, and the corner part 305, and as shown in FIG. 5b, the gear 3
A hardened layer 304 having a desired depth is also formed on the tooth bottom 208 of No. 01.
上記実施例では、歯車加熱導体１７が歯車加熱
導体１６の近辺で歯車加熱導体１６を迂回するよ
うに形成されている場合を説明したが、これにこ
だわるものではなく、歯車加熱導体１６が歯車加
熱導体１７の近辺で歯車加熱導体１７を迂回する
ように形成されているものであつてもよいし、或
いは、歯車加熱導体１６と１７の曲率半径を変え
て、歯車加熱導体１６と１７が交叉しないように
してもよい。この場合、曲率半径の大きい方の歯
車加熱導体は歯車の歯面３０９から遠ざかるけれ
ども、この歯車加熱導体に流れる電流の軸方向と
直交する方向の分力によつて、歯車の歯面に軸方
向と直交する誘導電流を生じるから、上記実施例
とほぼ同等の効果を得ることができる。 In the above embodiment, a case has been described in which the gear heating conductor 17 is formed in the vicinity of the gear heating conductor 16 so as to bypass the gear heating conductor 16, but the invention is not limited to this. It may be formed so as to bypass the gear heating conductor 17 near the conductor 17, or the radius of curvature of the gear heating conductors 16 and 17 may be changed so that the gear heating conductors 16 and 17 do not intersect. You can do it like this. In this case, the gear heating conductor with the larger radius of curvature moves away from the tooth surface 309 of the gear, but due to the component force in the direction orthogonal to the axial direction of the current flowing through this gear heating conductor, it Since an induced current orthogonal to the current is generated, substantially the same effect as the above embodiment can be obtained.
＜発明の効果＞
以上説明したように本発明の高周波焼入コイル
によれば、歯車と、歯車の両側に突出形成した軸
とを有する軸付き歯車の高周波焼入コイルにおい
て、軸の形状にほぼ対応した形状を有し対向する
ように配置された軸加熱導体に高周波電流を通電
することによつて軸に軸方向の誘導電流を発生し
て軸の表面を加熱すると共に、歯車にほぼ対向す
るように配置したほぼ半円形状の第１及び第２の
歯車加熱導体に高周波電流を通電することによつ
て歯車の歯面に軸方向と直交する方向の誘導電流
を発生して歯車の歯面を歯底に至るまで加熱す
る。<Effects of the Invention> As explained above, according to the induction hardened coil of the present invention, in an induction hardened coil for a shafted gear having a gear and a shaft protruding from both sides of the gear, the shape of the shaft is approximately the same. By passing a high frequency current through shaft heating conductors that have a corresponding shape and are arranged to face each other, an induced current in the axial direction is generated in the shaft to heat the surface of the shaft, and the shaft heating conductor is located almost opposite to the gear. By passing a high frequency current through the substantially semicircular first and second gear heating conductors arranged as shown in FIG. Heat up to the bottom of the tooth.
従つて、本発明の高周波焼入コイルによれば、
軸、歯車、及び歯車と軸との接続部分のコーナー
部にわたつて連続しており、しかも歯車の歯面に
おいては歯底を含む全歯面に所望の深さを有する
硬化層を形成することができる。 Therefore, according to the induction hardened coil of the present invention,
To form a hardened layer that is continuous across the corners of the shaft, the gear, and the connecting part between the gear and the shaft, and that has a desired depth on the entire tooth surface of the gear, including the tooth bottom. I can do it.
第１図〜第５図は本発明の一実施例を説明する
ための図面であつて、第１図は斜視図、第２図は
第１図より上方から見た一部切に欠き斜視図、第
３図ａ，ｂ及びｃはそれぞれ平面図、正面図及び
側面図である。第４図ａとｂは、それぞれ、第１
と第２の歯車加熱導体に流れる電流の分解説明図
であり、第５図ａは軸付き歯車の縦断面図、第５
図ｂは第５図ａのＡ−Ａ線矢示断面図である。第
６図と第７図は、それぞれ、軸付き歯車の従来の
高周波焼入コイルの第１例及び第２例を説明する
ための図面であつて、第６図ａは高周波焼入コイ
ルの斜視図、第６図ｂは軸付き歯車の縦断面図、
第６図ｃは第６図ｂのＢ−Ｂ線矢示断面図であ
り、第７図は高周波焼入コイルと軸付き歯車の断
面図である。
１０…高周波焼入コイル、１１〜１４…軸加熱
導体、１１ａ，１２ａ，１３ａ，１４ａ，１６
ａ，１７ａ…一端、１１ｂ，１２ｂ，１３ｂ，１
４ｂ，１６ｂ，１７ｂ…他端、１５…接続導体、
１６，１７…歯車加熱導体、３００…軸付き歯
車、３０１…歯車、３０２，３０３…軸。
1 to 5 are drawings for explaining one embodiment of the present invention, in which FIG. 1 is a perspective view, and FIG. 2 is a partially cutaway perspective view seen from above from FIG. 1. , FIGS. 3a, 3b and 3c are a plan view, a front view and a side view, respectively. Figures 4a and b are the first
and a second gear heating conductor; FIG.
FIG. 5b is a sectional view taken along the line A--A in FIG. 5a. 6 and 7 are drawings for explaining first and second examples of conventional induction hardened coils for gears with shafts, respectively, and FIG. 6a is a perspective view of the induction hardened coil. Figure 6b is a longitudinal cross-sectional view of the gear with shaft,
FIG. 6c is a sectional view taken along the line BB in FIG. 6b, and FIG. 7 is a sectional view of the induction hardened coil and the shafted gear. 10...Induction hardening coil, 11-14... Axial heating conductor, 11a, 12a, 13a, 14a, 16
a, 17a...one end, 11b, 12b, 13b, 1
4b, 16b, 17b...other end, 15... connection conductor,
16, 17... Gear heating conductor, 300... Gear with shaft, 301... Gear, 302, 303... Shaft.
Claims (1)
第１と第２の軸とを有する軸付き歯車の高周波焼
入コイルにおいて、第１の軸の形状にほぼ対応し
た形状を有し対向するように配置された第１及び
第２の軸加熱導体と、これら軸加熱導体の一端同
士を接続する接続導体と、第２の軸の形状にほぼ
対応した形状を有し対向するように配置された第
３及び第４の軸加熱導体と、第１の軸加熱導体の
他端と第４の軸加熱導体の一端を接続するほぼ半
円形状の第１の歯車加熱導体と、第２の軸加熱導
体の他端と第３の軸加熱導体の一端を接続するほ
ぼ半円形状の第２の歯車加熱導体とを具備し、且
つ、第１及び第２の軸加熱導体が第１の軸に、第
１及び第２の歯車加熱導体が歯車に、第３及び第
４の軸加熱導体が第２の軸に、それぞれ、対向す
るように配置されると共に、第３及び第４の軸加
熱導体の他端間に高周波電圧が印加されることを
特徴とする軸付き歯車の高周波焼入コイル。1. In an induction hardened coil for a shafted gear having a gear and first and second shafts protruding from both sides of the gear, the coil has a shape substantially corresponding to the shape of the first shaft and is opposed to each other. first and second shaft heating conductors arranged, a connecting conductor connecting one ends of these shaft heating conductors, and a second shaft heating conductor having a shape substantially corresponding to the shape of the second shaft and arranged to face each other. a substantially semicircular first gear heating conductor connecting the other end of the first shaft heating conductor and one end of the fourth shaft heating conductor; and a second shaft heating conductor. a second gear heating conductor having a substantially semicircular shape connecting the other end and one end of the third shaft heating conductor; The first and second gear heating conductors are arranged to face the gear, and the third and fourth shaft heating conductors are arranged to face the second shaft, respectively, and the third and fourth shaft heating conductors are arranged to face each other. An induction hardened coil for a gear with a shaft, characterized in that a high frequency voltage is applied between its ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1261000A JPH03122220A (en) | 1989-10-05 | 1989-10-05 | High-frequency hardening coil for gear with shafts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1261000A JPH03122220A (en) | 1989-10-05 | 1989-10-05 | High-frequency hardening coil for gear with shafts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03122220A JPH03122220A (en) | 1991-05-24 |
| JPH0514767B2 true JPH0514767B2 (en) | 1993-02-25 |
Family
ID=17355670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1261000A Granted JPH03122220A (en) | 1989-10-05 | 1989-10-05 | High-frequency hardening coil for gear with shafts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03122220A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2502127Y2 (en) * | 1991-10-04 | 1996-06-19 | 富士電子工業株式会社 | Semi-open type high frequency heating coil for stepped shaft |
| JP2632106B2 (en) * | 1991-11-19 | 1997-07-23 | 富士電子工業株式会社 | High frequency heating coil |
| JPH11162626A (en) * | 1997-11-27 | 1999-06-18 | High Frequency Heattreat Co Ltd | Induction heating coil for integrally quenching gear mounted to shaft |
| JP5329215B2 (en) * | 2008-12-26 | 2013-10-30 | 富士電子工業株式会社 | Induction heating apparatus for gear and stepped shaft, and induction heating method |
| JP5649790B2 (en) * | 2009-02-04 | 2015-01-07 | 富士電子工業株式会社 | Induction hardening equipment for helical gears |
-
1989
- 1989-10-05 JP JP1261000A patent/JPH03122220A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03122220A (en) | 1991-05-24 |
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