JPS6322634Y2 - - Google Patents
Info
- Publication number
- JPS6322634Y2 JPS6322634Y2 JP1981042399U JP4239981U JPS6322634Y2 JP S6322634 Y2 JPS6322634 Y2 JP S6322634Y2 JP 1981042399 U JP1981042399 U JP 1981042399U JP 4239981 U JP4239981 U JP 4239981U JP S6322634 Y2 JPS6322634 Y2 JP S6322634Y2
- Authority
- JP
- Japan
- Prior art keywords
- tooth profile
- heating coil
- tooth
- induction heating
- cooling fluid
- 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
Links
- 238000010438 heat treatment Methods 0.000 claims description 32
- 230000006698 induction Effects 0.000 claims description 10
- 230000000630 rising effect Effects 0.000 claims description 7
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
- 239000012809 cooling fluid Substances 0.000 description 11
- 239000004020 conductor Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 230000005291 magnetic effect Effects 0.000 description 5
- 238000010791 quenching Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 239000002436 steel type Substances 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
Landscapes
- General Induction Heating (AREA)
- Heat Treatment Of Articles (AREA)
Description
【考案の詳細な説明】
本考案は歯車、ラツク、スプロケツト等の連続
する歯形を１歯づつ誘導加熱手段を用いて熱処理
する場合に用いる歯形熱処理用誘導加熱コイルの
改良に関するものである。[Detailed Description of the Invention] The present invention relates to an improvement of an induction heating coil for tooth profile heat treatment, which is used when heat treating continuous tooth profiles of gears, racks, sprockets, etc. one tooth at a time using induction heating means.
従来、この種の熱処理は第１図ａに示すごと
く、内側面が歯形の被焼入面と所定間隙をへだて
るように設定したループ状の加熱コイルC′を用い
て歯形を１個づつ順次、熱処理するという方法に
よつているが、たとえば歯形G2の加熱時、加熱
コイルC′から発生する磁力線の影響を受けて隣り
の歯形G1およびG3まで、たとえば300℃以上にも
発熱する。もし、その熱処理が焼入れであつて、
隣の歯形の焼入れが済んでいるとすると、歯形の
材質がプレーンカーボン鋼であれば、一般に120
℃以上に加熱されると、焼戻しされることとな
り、所期の焼入れ効果を得ることができない。こ
れを避けるため、従来方法においては、歯形G2
に隣接する歯形G1およびG3の昇温を抑制する目
的で、隣接歯形G1およびG3に冷却水を流しつつ
歯形G2を加熱するという方法をとつている。こ
の方法だと、加熱コイルの自己冷却のための、お
よび歯形焼入れのための冷却流体系の他に、隣接
歯形冷却用の冷却流体系を必要とするため、それ
だけ機構および操作が複雑となるという欠点があ
る。 Conventionally, in this type of heat treatment, as shown in Fig. 1a, the tooth profile is processed one by one using a loop-shaped heating coil C' whose inner surface is set apart from the tooth profile surface to be hardened by a predetermined gap. For example, when tooth profile G 2 is heated, adjacent tooth profiles G 1 and G 3 are heated to over 300°C due to the influence of magnetic lines of force generated from heating coil C'. do. If the heat treatment is quenching,
Assuming that the adjacent tooth profile has been hardened, if the material of the tooth profile is plain carbon steel, generally 120
If it is heated above ℃, it will be tempered and the desired hardening effect cannot be obtained. To avoid this, in the conventional method, the tooth profile G 2
In order to suppress the temperature rise of the adjacent tooth profiles G 1 and G 3 , a method is used in which the tooth profile G 2 is heated while cooling water is flowing through the adjacent tooth profiles G 1 and G 3 . This method requires a cooling fluid system for cooling the adjacent tooth profile in addition to the cooling fluid system for self-cooling the heating coil and tooth profile hardening, which makes the mechanism and operation more complex. There are drawbacks.
隣接歯形G1およびG3が焼入れ前のものであつ
ても当該歯形G1およびG3には、歯形G2の加熱時
の熱影響が残留するので、歯形G2の熱処理後、
直ちに歯形G1またはG3を熱処理すれば、残留熱
に通常の加熱サイクルタイムによる加熱が重畳さ
れることとなつて加熱温度にばらつきが生じ、熱
処理条件が不均一になる。これを避けるため歯形
を１歯おきに、例えばG2，G4，G6……のごとく
熱処理し、当該熱処理による熱影響がなくなつた
処で、G1，G3，G5……のように熱処理するとい
う方法もとられている。しかしこの方法によれ
ば、１歯おきに加熱コイルと歯形との正確な位置
決めをする移動機構が必要となる。 Even if the adjacent tooth profiles G 1 and G 3 are before hardening, the thermal effects from the heating of the tooth profile G 2 remain on the tooth profiles G 1 and G 3 , so after the heat treatment of the tooth profile G 2 ,
If the tooth profile G 1 or G 3 is immediately heat treated, heating due to the normal heating cycle time will be superimposed on the residual heat, causing variations in the heating temperature and making the heat treatment conditions non-uniform. To avoid this, the tooth profile is heat -treated every other tooth, for example , G 2 , G 4 , G 6 . A method of heat treatment is also used. However, this method requires a moving mechanism for accurately positioning the heating coil and the tooth profile for every other tooth.
本考案は、歯形熱処理に存する上述のような問
題点を解決するためになされたものである。本考
案を第２図ａおよびｂに示した実施例に従つて説
明する。 The present invention has been made in order to solve the above-mentioned problems that exist in tooth profile heat treatment. The present invention will be explained according to the embodiment shown in FIGS. 2a and 2b.
Ｃは加熱コイルで、導体１は銅等の良導電材料
からなり、ループ状の中空体である。導体１の中
空部は下方に位置する、自己冷却用流体通路２と
上方に位置する焼入れ用冷却流体通路３との２室
に分割されている。 C is a heating coil, and the conductor 1 is a loop-shaped hollow body made of a highly conductive material such as copper. The hollow portion of the conductor 1 is divided into two chambers: a self-cooling fluid passage 2 located below and a hardening cooling fluid passage 3 located above.
本考案は連続する歯形を１歯づつ焼入れするも
ので、導体１の長手方向の内側は、連続する歯形
のうちの１歯の両側立上り面と所定間隔をへだて
て対向可能なように形成されており、外側は本実
施例においては、上下面に対して垂直に立ち上つ
ている。５は加熱コイルＣとは別個独立に設けら
れる焼入れ用冷却流体噴射管であつて、焼入れし
ようとする歯形に対向する管壁には冷却流体噴射
孔５１が形成されている。導体１の長手方向外側
には、パーマロイ、硅素鋼板などの強磁性材料か
らなるシールド板４，４が貼着されている。 In the present invention, continuous tooth profiles are hardened one tooth at a time, and the inside of the conductor 1 in the longitudinal direction is formed so that it can face the rising surfaces on both sides of one of the continuous tooth profiles at a predetermined distance. In this embodiment, the outer side rises perpendicularly to the upper and lower surfaces. Reference numeral 5 denotes a cooling fluid injection tube for hardening which is provided separately from the heating coil C, and cooling fluid injection holes 51 are formed in the tube wall facing the tooth profile to be hardened. Shield plates 4, 4 made of a ferromagnetic material such as permalloy or silicon steel plate are attached to the outer side of the conductor 1 in the longitudinal direction.
このような構成において、第２図に示すごと
く、連続する歯形G1，G2，G3……GoのうちのG2
を本考案によつて誘導加熱焼入れする場合につい
て述べる。 In such a configuration, as shown in Fig. 2, G 2 of the continuous tooth profiles G 1 , G 2 , G 3 ... G o
The case of induction heating quenching using the present invention will be described.
誘導加熱コイルＣを、その長手方向の対向内側
面のそれぞれと対向する歯形G2の立上り面とが
互に所定間隙をへだてるように鞍掛けし、加熱コ
イルＣの自己冷却用流体通路２に冷却流体を流通
させた後、図示しない高周波電源を投入して加熱
コイルＣの導体１に通電する。これにより、導体
１から発生する磁力線φによつて歯形G2の表層
は加熱され、鋼種によつて定まる焼入れ温度、た
とえば900℃以上にまで、たちまち昇温する。そ
の時点で高周波電源を断とし、焼入れ用冷却流体
通路３および５の冷却流体供給源を駆動する。そ
れにより冷却流体は、それぞれ噴射孔３１および
５１から歯形方向へ噴射され、歯形G2の表層に、
６として示すごときパターンの焼入れ層が形成さ
れる。この間、導体１の長手方向外側にはシール
ド板４，４が貼着されているので、導体１から発
生する磁力線φは当該シールド板４，４によつ
て、第２図ｂに示すように誘導され、歯形G1お
よびG3の、歯形G2の立上り部に対向する立上り
部７，７は磁力線φの影響をわづかしか受けな
い。本考案者の実験例によれば立上り部７，７は
100℃以下にしか昇温しないことが確かめられて
いる。 The induction heating coil C is saddled so that each of the opposing inner surfaces in the longitudinal direction and the rising surface of the opposing tooth profile G 2 are separated from each other by a predetermined gap, and the self-cooling fluid passage 2 of the heating coil C is formed. After circulating the cooling fluid, a high frequency power source (not shown) is turned on to energize the conductor 1 of the heating coil C. As a result, the surface layer of the tooth profile G2 is heated by the magnetic lines of force φ generated from the conductor 1, and the temperature is immediately raised to a quenching temperature determined by the steel type, for example, 900° C. or higher. At that point, the high frequency power source is turned off and the cooling fluid supply sources for the cooling fluid passages 3 and 5 for quenching are activated. As a result, the cooling fluid is injected from the injection holes 31 and 51 in the tooth profile direction, and onto the surface layer of the tooth profile G2 .
A hardened layer having a pattern as shown as 6 is formed. During this time, since shield plates 4, 4 are attached to the outside in the longitudinal direction of the conductor 1, the lines of magnetic force φ generated from the conductor 1 are guided by the shield plates 4, 4 as shown in Fig. 2b. The rising portions 7, 7 of the tooth profiles G1 and G3 , which are opposed to the rising portion of the tooth profile G2 , are only slightly influenced by the magnetic force lines φ. According to the inventor's experimental example, the rising portions 7, 7 are
It has been confirmed that the temperature will only rise below 100℃.
次いで加熱コイルＣの歯形G2への鞍掛けを解
除し、当該加熱コイルＣと歯車との相対移動およ
び加熱コイルＣの鞍掛けによつて歯形G1または
G3を上述したと同様に焼入れする。 Next, the saddle engagement of the heating coil C with the tooth profile G 2 is released, and the tooth profile G 1 or
Quench G3 as described above.
上述した処から明らかなように、歯形G2の加
熱時、隣接歯形G1およびG3の、G2に対向する立
上り部７，７の昇温は100℃以下に抑えられるの
で、G1もしくはG3が焼入れ済みのものであつた
としても、焼戻し温度をはるかに下回つており
G1もしくはG3の焼入れに何等影響を与えること
はない。従つて歯車と加熱コイルＣとの相対移動
によつて焼入れ済みの歯形を焼戻しする恐れな
く、順次連続的に焼入れすることが可能である。 As is clear from the above, when the tooth profile G 2 is heated, the temperature rise of the rising portions 7, 7 of the adjacent tooth profiles G 1 and G 3 , which are opposite to G 2 , is suppressed to 100°C or less . Even if G 3 is hardened, it is far below the tempering temperature.
It has no effect on the hardening of G 1 or G 3 . Therefore, it is possible to sequentially and continuously harden the hardened tooth profile without fear of tempering the hardened tooth profile due to relative movement between the gear and the heating coil C.
本考案によれば、誘導加熱コイルＣの導管１の
長手方向外側に設けたシールド板によつて導管に
発生する磁力線を当該シールド板に効果的に誘導
するので、
１ 加熱中の歯形に隣接する歯形の昇温が可及的
に抑制され、隣接歯形が焼入れ済みのものであ
つたとしても、その熱影響によつて焼戻しされ
る恐れはなく、
２ さらに従来方式における隣接歯形冷却用の冷
却流体系も全く不要であるので、
その実用的効果は顕著である。 According to the present invention, the lines of magnetic force generated in the conduit are effectively guided to the shield plate by the shield plate provided on the outside in the longitudinal direction of the conduit 1 of the induction heating coil C. Temperature rise of the tooth profile is suppressed as much as possible, and even if the adjacent tooth profile is already hardened, there is no risk of tempering due to its thermal influence.2 Furthermore, the cooling flow for cooling the adjacent tooth profile in the conventional method Since no system is required, its practical effects are remarkable.
第１図ａは従来の歯形焼入れ用誘導加熱コイル
の斜視図、第１図ｂは第１図ａに示す誘導加熱コ
イルの欠点を説明するための断面図、第２図ａは
本考案の実施例を示す断面図、第２図ｂは本考案
の効果を説明するための断面図である。
４……シールド板、Ｃ……誘導加熱コイル、
G1，G2，G3，G4……歯形。
Fig. 1a is a perspective view of a conventional induction heating coil for tooth profile hardening, Fig. 1b is a sectional view for explaining the drawbacks of the induction heating coil shown in Fig. 1a, and Fig. 2a is an implementation of the present invention. A cross-sectional view showing an example, FIG. 2b is a cross-sectional view for explaining the effects of the present invention. 4... Shield plate, C... Induction heating coil,
G 1 , G 2 , G 3 , G 4 ... Tooth profile.
Claims (1)
面と所定間隙をへだてて対向するように、その内
側面を構成したループ状誘導加熱コイルの外側面
に強磁性材料からなるシールド板を設けたことか
らなる歯形熱処理用誘導加熱コイル。 A shield plate made of a ferromagnetic material is provided on the outer surface of the loop-shaped induction heating coil, the inner surface of which faces the rising surfaces of one of the continuous tooth profiles with a predetermined gap between them. Induction heating coil for tooth profile heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981042399U JPS6322634Y2 (en) | 1981-03-27 | 1981-03-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981042399U JPS6322634Y2 (en) | 1981-03-27 | 1981-03-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57155694U JPS57155694U (en) | 1982-09-30 |
| JPS6322634Y2 true JPS6322634Y2 (en) | 1988-06-21 |
Family
ID=29839431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981042399U Expired JPS6322634Y2 (en) | 1981-03-27 | 1981-03-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6322634Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101560774B1 (en) * | 2008-11-11 | 2015-10-16 | 삼성전자주식회사 | Coil |
| US8454767B2 (en) * | 2011-03-01 | 2013-06-04 | Ntn Corporation | Heat treatment method, outer joint member, and tripod type constant velocity universal joint |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5534555A (en) * | 1978-09-01 | 1980-03-11 | Meisei Electric Co Ltd | Inhibiting method for incoming tone display |
-
1981
- 1981-03-27 JP JP1981042399U patent/JPS6322634Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5534555A (en) * | 1978-09-01 | 1980-03-11 | Meisei Electric Co Ltd | Inhibiting method for incoming tone display |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57155694U (en) | 1982-09-30 |
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