JPH0266123A - Hardening device for cam shaft - Google Patents
Hardening device for cam shaftInfo
- Publication number
- JPH0266123A JPH0266123A JP63217454A JP21745488A JPH0266123A JP H0266123 A JPH0266123 A JP H0266123A JP 63217454 A JP63217454 A JP 63217454A JP 21745488 A JP21745488 A JP 21745488A JP H0266123 A JPH0266123 A JP H0266123A
- Authority
- JP
- Japan
- Prior art keywords
- camshaft
- cam
- pair
- hardening
- conductor
- 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.)
- Granted
Links
- 239000004020 conductor Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 23
- 230000035699 permeability Effects 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 230000006698 induction Effects 0.000 claims description 6
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 241000252233 Cyprinus carpio Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 239000010959 steel 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
- Heat Treatment Of Articles (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、自動車のエンジン等において給排気弁などを
駆動するカムシャフトを焼入・硬化するための装置に関
し、特にカムシャフトのカム部分を高周波電流による誘
導加熱を利用して焼入するカムシャフト用焼入装置に関
する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a device for quenching and hardening a camshaft that drives intake and exhaust valves in an automobile engine, etc. The present invention relates to a camshaft hardening device that hardens using induction heating using high-frequency current.
〔従来の技術］
一般に、給排気弁などを駆動するカムシャフトは、第４
図に示すように、カム軸１にカムＩＡを取り付けて構成
され、カム軸１を回転能動してカムＩＡの外周によりタ
ペット（図示せず）を押圧することで、給排気弁等が駆
動されるようになっている。[Prior art] Generally, the camshaft that drives the supply and exhaust valves, etc.
As shown in the figure, a cam IA is attached to a camshaft 1, and the camshaft 1 is actively rotated and the outer periphery of the cam IA presses a tappet (not shown) to drive the supply and exhaust valves, etc. It has become so.
このようにカムＩＡはタペットと所定の押圧力で接触し
続けるため、カムＩＡの外周の強度を増すために、従来
より、高周波電流による誘導加熱を利用して、カムＩＡ
の外周面を加熱・焼入して硬化させることが行なわれて
いる。In this way, the cam IA continues to be in contact with the tappet with a predetermined pressing force, so in order to increase the strength of the outer periphery of the cam IA, induction heating using high-frequency current has been used to increase the strength of the cam IA.
The outer peripheral surface of the steel is heated and quenched to harden it.
従来、この種のカムシャフト用焼入装置としては、第４
図に示すようなものがある。この焼入装置は、高周波電
源（図示せず）に接続されるコイル部材２により構成さ
れており、カムＩＡを加熱・焼入する際には、カムシャ
フトをコイル部材２内に挿入して、カムＩＡの外周にコ
イル部材２を配設する。Conventionally, as this type of camshaft hardening equipment,
There is something like the one shown in the figure. This hardening device is composed of a coil member 2 connected to a high-frequency power source (not shown), and when heating and hardening the cam IA, the camshaft is inserted into the coil member 2. A coil member 2 is arranged around the outer periphery of the cam IA.
そして、このコイル部材２に高周波電源を接続して高周
波電流を流すと、コイル部材２からの電磁誘導作用によ
って、良導体製のカムＩＡでは、その表面に生じた渦電
流によりコイル部材２に近接するカムＩＡの外周面にお
いて発熱を生じ、カムＩＡの外周が加熱されて焼入され
る。なお、焼入中、カムシャフトは常時回転開動される
。Then, when a high-frequency power source is connected to this coil member 2 and a high-frequency current is caused to flow, the cam IA made of a good conductor approaches the coil member 2 due to the eddy current generated on its surface due to the electromagnetic induction effect from the coil member 2. Heat is generated on the outer circumferential surface of the cam IA, and the outer circumference of the cam IA is heated and hardened. Note that during hardening, the camshaft is constantly rotated and opened.
［発明が解決しようとする課題］
ところで、通常、カムシャフトのカム軸１には、気筒数
に応じた数だけカムＩＡが設けられるが、第５図に示す
ように、このカム軸１には、同一気筒について吸気弁用
および排気弁用のように、互いに位相の異なるカムＩＡ
が複数（第５図では２個）近接してそなえられる場合が
多い、このような場合に、上述のような従来のカムシャ
フト用焼入装置を用いて、各カムＩＡ、ＬＡを同時に焼
入処理する際には、第Ｓ図に示すように、カムシャフト
を、コイル部材２内に挿入して、各カムＩＡの位置とコ
イル部材２との位置が対応するように配置してから、高
周波電流を通電する。[Problems to be Solved by the Invention] Normally, the camshaft 1 of a camshaft is provided with cams IA in a number corresponding to the number of cylinders, but as shown in FIG. , cams IA with different phases for the same cylinder, such as for intake valves and exhaust valves.
In many cases, a plurality of cams (two in Fig. 5) are provided in close proximity to each other. When processing, as shown in FIG. energize current.
このとき、コイル部材２の磁界は、第５図に細線ａで示
すように、近傍の部材にも及びうるようにコイル部材２
の外周に形成されるとともに、各カムＩＡにおいて、カ
ムトップＩＡ−１の表面とベースサークルＩＡ−２の表
面とではカム軸１の軸心からの距ｎが異なっている。こ
のために、特に、隣接するカムＩＡ、ＩＡどうしの間隔
が第５図に示すように狭いと、カムＩＡ外周面のＡ部分
（ベースサークルＩＡ−２側）は、コイル部材２からの
磁気を隣接するカムＩＡのカムトップＬＡ−１にとられ
て、誘導加熱を生じにくくなり、Ｂ部分に比べて加熱温
度が低くなる。At this time, as shown by the thin line a in FIG.
In each cam IA, the distance n from the axis of the cam shaft 1 is different between the surface of the cam top IA-1 and the surface of the base circle IA-2. For this reason, especially when the distance between adjacent cams IA and IA is narrow as shown in FIG. Being absorbed by the cam top LA-1 of the adjacent cam IA, induction heating is less likely to occur, and the heating temperature is lower than that of the B portion.
従って、従来の焼入装置では、加熱ムラを生じやすく、
各カムＩＡを均一に焼入・硬化することができない。Therefore, with conventional hardening equipment, uneven heating tends to occur.
It is not possible to uniformly quench and harden each cam IA.
また、従来の焼入装置では、焼入作業時にコイル部材２
内にカムシャフトを挿入するために、そのセットが困難
であるという課題もある。In addition, in conventional hardening equipment, the coil member 2 is
Another problem is that it is difficult to set up the camshaft because it has to be inserted inside.
本発明は、上述のような課題を解決しようとするもので
、カム部分を均一に加熱・焼入できるとともに、カムシ
ャフトのセツティングを容易に行なえるようにしたカム
シャフト用焼入装置を提供することを目的とする。The present invention aims to solve the above-mentioned problems, and provides a camshaft hardening device that can uniformly heat and harden the cam portion and also allows easy setting of the camshaft. The purpose is to
［課題を解決するための手段］
このため１本発明のカムシャフト用焼入装置は、高周波
電源に接続されるコイル部材を、カムシャフトのカム軸
の軸方向に沿って同カム軸を両側から挾むように配置さ
れる一対の導体部分をそなえて構成し、上記カム軸上に
おけるカム部分の配設位置に応じて、上記一対の導体部
分に、それぞれ一対のコ字型の高透磁率材を、その開口
部を互いに対向させるようにして取り付けたことを特徴
としている。[Means for Solving the Problems] Therefore, in the camshaft hardening device of the present invention, a coil member connected to a high frequency power source is heated along the axial direction of the camshaft of the camshaft from both sides. A pair of conductor portions are arranged to sandwich each other, and a pair of U-shaped high magnetic permeability materials are attached to each of the pair of conductor portions depending on the arrangement position of the cam portion on the camshaft. The device is characterized in that it is attached with its openings facing each other.
［作 用］
上述の本発明のカムシャフト用焼入装置では、コイル部
材の一対の導体部分がカムシャフトのカム軸の軸方向に
沿ってこのカム軸を両側から挾むように配置されるとと
もに、カム部分の位置に応じて一対の導体部分に一対の
コ字型の高透磁率材がその開口部を互いに対向させて配
設されているので、上記コイル部材に高周波電源から高
周波電流を流すと、上記の導体部分および高透磁率材に
より形成される磁界は、所定のカム部分のみに向かって
均一に形成されることになる。従って、カムシャフトの
カム部表面は誘導加熱により均一に加熱・焼入される。[Function] In the camshaft hardening device of the present invention described above, the pair of conductor portions of the coil member are arranged along the axial direction of the camshaft of the camshaft so as to sandwich the camshaft from both sides, and A pair of U-shaped high magnetic permeability materials are arranged in a pair of conductor parts with their openings facing each other depending on the position of the parts, so when a high frequency current is passed through the coil member from a high frequency power source, The magnetic field formed by the conductor portion and the high magnetic permeability material described above is uniformly formed only toward a predetermined cam portion. Therefore, the surface of the cam portion of the camshaft is uniformly heated and hardened by induction heating.
［実 施 例］
以下、図面により本発明の一実施例としてのカムシャフ
ト用焼入装置を説明すると、第１図はその平面図、第２
図は第１図の■−■矢視拡大断面図、第３図はその要部
を示す斜視図である。[Embodiment] Hereinafter, a camshaft hardening device as an embodiment of the present invention will be explained with reference to the drawings. FIG. 1 is a plan view thereof, and FIG.
The figure is an enlarged sectional view taken along the line ■--■ in FIG. 1, and FIG. 3 is a perspective view showing the main parts thereof.
第１〜３図に示すように、本実施例の焼入装置は、高周
波電源５に接続されるコイル部材４を有して構成されて
いる。そして、このコイル部材４は、一対の導体部分４
Ａ、４Ａと、一対のｆｔ１Ｉ！Ｘ接続部４Ａ−１，４Ａ
−１と、一対の端部導体部分４Ａ−２，４Ａ−２とから
構成されている。As shown in FIGS. 1 to 3, the hardening apparatus of this embodiment includes a coil member 4 connected to a high frequency power source 5. As shown in FIGS. This coil member 4 includes a pair of conductor portions 4
A, 4A and a pair of ft1I! X connection part 4A-1, 4A
-1, and a pair of end conductor portions 4A-2, 4A-2.
ここで、一対の導体部分４Ａ、４Ａは、カムシャフトの
カム軸１の軸方向に沿ってこのカム軸１を両側から挾む
ように配置されており、一方の導体部分４Ａの中央付近
から電源接続部４Ａ−１゜４Ａ−１が導き出されて高周
波電源５に接続されている。また、一対の導体部分４Ａ
、４Ａの両端部においては、それぞれ導体部分４Ａ、４
Ａの端部どうじが、端部導体部分４Ａ−２，４Ａ−２に
より接続されている。さらに、各端部導体部分４Ａ−２
，４Ａ−２は、第２，３図に示すように、カム軸１やカ
ム軸端部部材３の軸方向への延在を許容すべく半円形状
に形成されている。Here, the pair of conductor parts 4A, 4A are arranged along the axial direction of the camshaft 1 of the camshaft so as to sandwich the camshaft 1 from both sides, and a power supply connection is connected from near the center of one conductor part 4A. 4A-1° 4A-1 is led out and connected to the high frequency power source 5. In addition, a pair of conductor portions 4A
, 4A, conductor portions 4A, 4A, respectively.
The ends of A are connected by end conductor portions 4A-2, 4A-2. Furthermore, each end conductor portion 4A-2
, 4A-2, as shown in FIGS. 2 and 3, are formed in a semicircular shape to allow the camshaft 1 and the camshaft end member 3 to extend in the axial direction.
そして、一対の導体部分４Ａ、４Ａには、カム軸１上に
おけるカムＩＡの配設位置に応じて、それぞれ一対のコ
字型の高透磁率材４Ｂ、４Ｂが。The pair of conductor portions 4A, 4A are each provided with a pair of U-shaped high magnetic permeability materials 4B, 4B, depending on the placement position of the cam IA on the camshaft 1.
その開口部を互いに対向させるように、各導体部分４Ａ
、４Ａの外側から嵌着されて取り付けられている。Each conductor portion 4A has its openings facing each other.
, 4A are fitted and attached from the outside.
なお、高透磁率材４Ｂ、４Ｂとしては、純鉄。Note that the high magnetic permeability materials 4B and 4B are pure iron.
珪素鋼板（珪素鋼板を積層したものを含む）等が用いら
れる。また、一対の高透磁率材４Ｂ、４Ｂは、焼入すべ
きカムシャフトごとにそのカムＩＡの位置や数に応じて
配置・設定される。A silicon steel plate (including a laminated silicon steel plate) or the like is used. Further, the pair of high magnetic permeability materials 4B, 4B are arranged and set for each camshaft to be hardened depending on the position and number of the cams IA.
本発明の一実施例としてのカムシャフト用焼入装置は上
述のごとく構成されているので、カムシャフトのカムＩ
Ａの表面を焼入する際には、まず。Since the camshaft hardening device as an embodiment of the present invention is constructed as described above, the cam shaft cam I
When hardening the surface of A, first.
第１，２図に示すように、カムシャフトのカム軸１が導
体部分４Ａ、４Ａに挾まれ、且つ、カムＩＡの位置と高
透磁率材４Ｂ、４Ｂの位置とが対応するようにカムシャ
フトを配置する。As shown in Figures 1 and 2, the camshaft is arranged so that the camshaft 1 of the camshaft is sandwiched between the conductor parts 4A, 4A, and the position of the cam IA corresponds to the position of the high magnetic permeability materials 4B, 4B. Place.
このとき１本実施例の焼入装置では、カムシャフトをコ
イル内に挿入するといった作業を行なう必要がなくなる
ほか、半円形状の端部導体部分４Ａ−２，４Ａ−２によ
りカム軸１やカム軸端部部材３の軸方向への延在が許容
されているので、極めて容易にカムシャフトを焼入作業
状態にセツティングすることができる。At this time, in the hardening device of this embodiment, there is no need to insert the camshaft into the coil, and the semicircular end conductor portions 4A-2 and 4A-2 prevent the camshaft 1 and the cam from being inserted. Since the shaft end member 3 is allowed to extend in the axial direction, the camshaft can be set to the hardening state very easily.
カムシャフトのセツティング後、高周波電源５から電源
接続部４Ａ−１，４Ａ−１を介してコイル部材４に高周
波電流を流すと、この電流が導体部分４Ａ、４Ａに沿っ
てカム軸１の軸方向に流れるとともに、コ字形の高透磁
率材４Ｂ、４Ｂが各カムＩＡの位置に対応してその開口
部をカムＩＡへ向けるように配置されているので、導体
部分４Ａおよび高透磁率材４Ｂにより形成される磁界は
、第２図に細線すで示すように、高透磁率材４Ｂ。After setting the camshaft, when a high-frequency current is passed from the high-frequency power source 5 to the coil member 4 via the power supply connections 4A-1 and 4A-1, this current flows along the conductor portions 4A and 4A to the axis of the camshaft 1. The conductor portion 4A and the high magnetic permeability material 4B are arranged in such a way that the U-shaped high magnetic permeability materials 4B, 4B are arranged so that their openings are directed toward the cam IA in accordance with the position of each cam IA. The magnetic field formed by the high magnetic permeability material 4B, as shown by the thin line in FIG.
４Ｂの開口部の向かうカムＩＢのみに向かって均一に形
成されることになる。It is formed uniformly only toward the cam IB toward which the opening of 4B is directed.
これにより、カムシャフトの複数のカムＩＡの表面が、
同時に誘導加熱により均一に加熱・焼入されて硬化され
、カムＩＡの表面の強度が増加する。As a result, the surface of the multiple cams IA of the camshaft is
At the same time, it is uniformly heated and quenched by induction heating and hardened, increasing the strength of the surface of the cam IA.
なお、カムシャフトの焼入作業中には、カムシャフト両
端のカム軸端部部材３，３は図示しない回転駆動部に接
続されて、常時、カムシャフトは回転駆動されている。Note that during the hardening work of the camshaft, the camshaft end members 3, 3 at both ends of the camshaft are connected to a rotation drive unit (not shown), and the camshaft is constantly driven to rotate.
このように、本実施例の焼入装置によれば、導体部分４
Ａによりカムシャフトのカム軸１の軸方向に沿って高周
波電流を流すとともに、コ字形の高透磁率材４Ｂをカム
ＩＡの位置に対応して導体部分４Ａに取り付けることに
よって、所定のカム１Ａのみに向かう磁界が形成され、
隣接するカムＩＡや高透磁率材４Ｂの影響を受けること
はないので、加熱ムラが発生せずカムＩＡを均一に加熱
・焼入できるほか、焼入作業時のカムシャフトのセツテ
ィングが極めて容易に行なわれる。In this way, according to the hardening apparatus of this embodiment, the conductor portion 4
A causes a high frequency current to flow along the axial direction of the camshaft 1 of the camshaft, and by attaching the U-shaped high magnetic permeability material 4B to the conductor portion 4A corresponding to the position of the cam IA, only the predetermined cam 1A is A magnetic field is formed towards
Since it is not affected by the adjacent cam IA or high magnetic permeability material 4B, the cam IA can be uniformly heated and hardened without uneven heating, and the camshaft is extremely easy to set during hardening work. It will be held in
なお、上記実施例では、１つのコイル部材４により、カ
ムシャフトの複数のカムＩＡをすべて焼入するように構
成したが、高周波電ｇ５の電力やカムシャフトの大きさ
、カムの数に応じて、コイル部材４を１〜４個程度に分
割して構成し、カムシャフトをセツティングするように
してもよい。In the above embodiment, the single coil member 4 is configured to harden all of the plurality of cams IA of the camshaft. Alternatively, the coil member 4 may be divided into about 1 to 4 pieces to set the camshaft.
また、高透磁率材４Ｂを導体部分４Ａに沿い摺動自在に
設け、所望位置で高透磁率材４Ｂを導体部分４Ａに固定
できるようにすれば、種々のカムシャフトについての焼
入を容易に行なえるほか、高透磁率材４ＢがカムＩＡと
対応した位置となるような微調整も可能になる。Furthermore, if the high magnetic permeability material 4B is slidably provided along the conductor portion 4A and the high magnetic permeability material 4B can be fixed to the conductor portion 4A at a desired position, hardening of various camshafts can be easily performed. In addition to this, it also becomes possible to make fine adjustments so that the high magnetic permeability material 4B is placed in a position corresponding to the cam IA.
［発明の効果］
以上詳述したように、本発明のカムシャフト用焼入装置
によれば、高周波電源に接続されるコイ指部材を、カム
シャフトのカム軸の軸方向に沿って同カム軸を両側から
挾むように配置される一対の導体部分をそなえて構成し
、上記カム軸上におけるカム部分の配設位置に応じて、
上記一対の導体部分に、それぞれ一対のコ字型の高透磁
率材を、その開口部を互いに対向させるようにして取り
付けるという極めて簡素な構成により、所定のカム部分
のみに向かう磁界を形成できるので、隣接するカム部分
や高透磁率材の影響を受けることなく。[Effects of the Invention] As described in detail above, according to the camshaft hardening device of the present invention, the carp finger member connected to the high frequency power source is attached to the camshaft along the axial direction of the camshaft. A pair of conductor parts are arranged to sandwich the cam from both sides, and depending on the position of the cam part on the cam shaft,
With an extremely simple configuration in which a pair of U-shaped high magnetic permeability materials are attached to each of the above pair of conductor parts with their openings facing each other, it is possible to form a magnetic field directed only to a predetermined cam part. , without being affected by adjacent cam parts or high permeability materials.
カム部分の加熱・焼入を均一に行なえるほか、焼入作業
時のカムシャフトのセツティングを極めて容易に行なえ
る効果が得られる。In addition to uniformly heating and hardening the cam part, it also makes setting the camshaft extremely easy during hardening work.
第１〜３図は本発明の一実施例としてのカムシャフト用
焼入装置を示すもので、第１図はその平面図、第２図は
第１図の■−■矢視拡大断面図。
第３図はその要部を示す斜視図であり、第４，５図は従
来のカムシャフト用焼入装置を示すもので、第４図はそ
のカムシャフトへの装着状態を示す斜視図、第５図はそ
の複数カム同時焼入時の状態を示す側面図である。
１・−カム軸、ＩＡ−カム、３・・−カム軸端ぼ部材、
４、・−コイル部材、４ Ａ ・−・導体部分、４Ａ−
１−電源接続部、４ Ａ −２−・一端部導体部分、４
Ｂ−・−高透磁率材、５・・−高周波電源６1 to 3 show a camshaft hardening device as an embodiment of the present invention, in which FIG. 1 is a plan view thereof, and FIG. 2 is an enlarged sectional view taken along the line ■-■ in FIG. 1. FIG. 3 is a perspective view showing the main parts, and FIGS. 4 and 5 show a conventional camshaft hardening device. FIG. FIG. 5 is a side view showing the state when a plurality of cams are simultaneously hardened. 1.--camshaft, IA-cam, 3.--camshaft end member,
4, - Coil member, 4 A - Conductor part, 4A-
1-Power supply connection part, 4 A-2-・One end conductor part, 4
B--High magnetic permeability material, 5...-High frequency power supply 6
Claims (1)
ム部分を焼入すべく、上記カムシャフトの外周に配設さ
れて高周波電源に接続されるコイル部材を有するカムシ
ャフト用焼入装置において、上記コイル部材が、上記カ
ムシャフトのカム軸の軸方向に沿って同カム軸を両側か
ら挾むように配置される一対の導体部分をそなえて構成
され、上記カム軸上における上記カム部分の配設位置に
応じて、上記一対の導体部分にそれぞれ一対のコ字型の
高透磁率材がその開口部を互いに対向するように取り付
けられていることを特徴とする、カムシャフト用焼入装
置。In order to harden the cam portion of the camshaft using induction heating using high-frequency current, the camshaft hardening device includes a coil member disposed on the outer periphery of the camshaft and connected to a high-frequency power source. The member is configured with a pair of conductor parts arranged to sandwich the camshaft from both sides along the axial direction of the camshaft of the camshaft, and the conductor part is arranged according to the arrangement position of the cam part on the camshaft. A hardening device for a camshaft, characterized in that a pair of U-shaped high magnetic permeability materials are attached to each of the pair of conductor portions so that their openings face each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63217454A JPH0696747B2 (en) | 1988-08-31 | 1988-08-31 | Hardening device for camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63217454A JPH0696747B2 (en) | 1988-08-31 | 1988-08-31 | Hardening device for camshaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0266123A true JPH0266123A (en) | 1990-03-06 |
| JPH0696747B2 JPH0696747B2 (en) | 1994-11-30 |
Family
ID=16704486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63217454A Expired - Fee Related JPH0696747B2 (en) | 1988-08-31 | 1988-08-31 | Hardening device for camshaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0696747B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998035066A1 (en) * | 1997-02-06 | 1998-08-13 | Elotherm Gmbh | Method for hardening camshafts and linear inductor for the implementation of said method |
| US6077475A (en) * | 1997-04-18 | 2000-06-20 | Daimlerchrysler Ag | Arrangement and process for the inductive hardening of profiled camshafts |
| JP2014122374A (en) * | 2012-12-20 | 2014-07-03 | Toyota Motor Corp | Method for producing cam shaft |
-
1988
- 1988-08-31 JP JP63217454A patent/JPH0696747B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998035066A1 (en) * | 1997-02-06 | 1998-08-13 | Elotherm Gmbh | Method for hardening camshafts and linear inductor for the implementation of said method |
| US6259076B1 (en) * | 1997-02-06 | 2001-07-10 | Elotherm Gmbh | Method for hardening camshafts and linear inductor for the implementation of said method |
| US6077475A (en) * | 1997-04-18 | 2000-06-20 | Daimlerchrysler Ag | Arrangement and process for the inductive hardening of profiled camshafts |
| JP2014122374A (en) * | 2012-12-20 | 2014-07-03 | Toyota Motor Corp | Method for producing cam shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0696747B2 (en) | 1994-11-30 |
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