JPS62167823A - Method and device for hardening crank shaft - Google Patents
Method and device for hardening crank shaftInfo
- Publication number
- JPS62167823A JPS62167823A JP864586A JP864586A JPS62167823A JP S62167823 A JPS62167823 A JP S62167823A JP 864586 A JP864586 A JP 864586A JP 864586 A JP864586 A JP 864586A JP S62167823 A JPS62167823 A JP S62167823A
- Authority
- JP
- Japan
- Prior art keywords
- crankshaft
- temperature
- thin
- cooling medium
- shaft
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000010791 quenching Methods 0.000 claims abstract description 18
- 239000002826 coolant Substances 0.000 claims abstract description 16
- 230000000171 quenching effect Effects 0.000 claims abstract description 9
- 230000000630 rising effect Effects 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract description 6
- 238000013021 overheating Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 8
- 238000005336 cracking Methods 0.000 description 8
- 239000000498 cooling water Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はクランクシャフトの焼入方法及び装置に関する
もので、特にピン部、ジャーナル部を焼入れするにさい
し改良された焼入方法及び装置に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method and apparatus for hardening a crankshaft, and in particular to an improved hardening method and apparatus for hardening pin parts and journal parts. It is.
（従来の技術）
第３図に示す如くクランクシャフト（５１）のピン部（
５２）や第４図に示す如きジャーナル部（５３）を高周
波焼入れするには、半円状の高周波加熱コイルを用いて
上下、或は左右からピン部（５２）やジャーナル部に遊
嵌し、高周波加熱コイルに高周波電流を流してピン部（
５２）、ジャーナル部（５３）の表面を加熱し、加熱後
、例えば特開昭５９−１５００２２号の如く高周波コイ
ルに内蔵した冷却水ジャケットから冷却水を加熱部に噴
射し、冷却して焼入れを行っている。(Prior art) As shown in Fig. 3, the pin portion (
52) and the journal portion (53) as shown in FIG. 4, a semicircular high-frequency heating coil is loosely fitted into the pin portion (52) or the journal portion from the top and bottom or from the left and right. A high-frequency current is passed through the high-frequency heating coil and the pin part (
52), the surface of the journal part (53) is heated, and after heating, cooling water is injected from the cooling water jacket built into the high frequency coil to the heating part, as in JP-A-59-150022, for example, to cool and harden the part. Is going.
（発明が解決しようとする問題点）
以上の従来技術において、ピン部（５２） 、 ジャー
ナル部（５３）の軸部周面（ａ）を焼入れして所定深さ
の硬化層を形成して強度、耐摩耗性を向上せしめるとと
もに、ピン部、ジャーナル部の両端内壁、所謂フィレッ
ト部（ｂ）、（ｂ）表面も疲労強度を向上せしめるべく
焼入れして硬化層を形成するものであるが、フィレット
部（ｂ） 、 （ｂ）の周りの部分（Ｃ）の肉厚は軸部
（ａ）に比して極端に薄く、ために加熱時にはフィレッ
ト部（ｂ） 、 （ｂ）付近の薄肉部はヒートマスが小
さいために過加熱される。この結果、冷却時には薄肉部
の冷却速度が速く、且つ過加熱されているのでフィレッ
ト部（ｂ）、（ｂ）と軸部（ａ）との間の冷却速度に極
端な差が生じ、焼割れが発生する虞れがある。(Problems to be Solved by the Invention) In the above-mentioned prior art, the peripheral surfaces (a) of the shaft portions of the pin portion (52) and the journal portion (53) are hardened to form a hardened layer of a predetermined depth to increase the strength. In addition to improving wear resistance, the inner walls at both ends of the pin part and journal part, the so-called fillet parts (b), and (b) surfaces are also hardened to form a hardened layer to improve fatigue strength. The thickness of the part (C) around the part (b) and (b) is extremely thin compared to the shaft part (a), so when heating, the thin part near the fillet part (b) and (b) Overheating due to small heat mass. As a result, during cooling, the cooling rate of the thin-walled part is fast, and since it is overheated, there is an extreme difference in the cooling rate between the fillet part (b), (b) and the shaft part (a), resulting in quench cracking. There is a possibility that this may occur.
そこで上記に対処すべく誘導電流、電圧、加熱コイルの
形状、ワークとコイルのクリアランス、コイルの移動速
度、加熱温度、冷却速度等の高周波焼入条件を設定して
高周波焼入れを行っているのが現状であるが、前記条件
を生産工程の中で調整、制御することは実際上は困難で
、上記によれば充分ではないにしても焼割れは防ＩＬＬ
得るも品質的には不安定である。Therefore, in order to deal with the above problems, induction hardening is performed by setting induction hardening conditions such as induced current, voltage, shape of the heating coil, clearance between the workpiece and the coil, moving speed of the coil, heating temperature, and cooling rate. At present, it is actually difficult to adjust and control the above conditions during the production process, and although the above is not sufficient, it is possible to prevent ILL from quenching cracking.
However, the quality is unstable.
以上に代え焼割れが発生しないような条件を選定したと
すると既述のフィレット部の疲労強度の向上という特性
は満足し得るも軸部の必要とする強度、＃摩耗性の向上
という特性を得ることが困難となる。If we instead select conditions that do not cause quench cracking, we can satisfy the above-mentioned characteristics of improving the fatigue strength of the fillet portion, but we also obtain the characteristics of improving the strength and abrasion resistance that are required for the shaft portion. This becomes difficult.
本発明は以上の如き問題点を解決すべくなされたもので
、その目的とする処は、軸部、フィレット夫々の焼入硬
化特性を満足させつつフィレット部近傍の薄肉部の焼割
を防止し１以上を容易に確実に企図し１品質の優れたク
ランクシャフトを得ることができるクランクシャフトの
焼入方法及び装置を提供するにある。The present invention has been made to solve the above-mentioned problems, and its purpose is to prevent cracking of the thin walled portion near the fillet portion while satisfying the quench hardening characteristics of the shaft portion and the fillet. To provide a method and apparatus for hardening a crankshaft, which can easily and reliably achieve one or more of the following properties and obtain a crankshaft of excellent quality.
（問題点を解決するための手段）
以上の問題点を解決するための手段は、クランクシャフ
トのピン部やジャーナル部を該部分の外周に臨ませた高
周波加熱機構で加熱し、焼入れするようにした方法にお
いて、軸部周の軸方向端部から径方向外方に立ち上がる
フィレット部近傍の薄肉部の前記加熱による温度を検出
して所定温度具りで該薄肉部表面に冷却媒体を供給し該
薄肉部の所定温度以上の昇温を防１トすべく制御するよ
うにした方法及び装置である。(Means for solving the problem) A means for solving the above problem is to heat and harden the pin part and journal part of the crankshaft with a high frequency heating mechanism facing the outer periphery of the part. In this method, the temperature caused by the heating of the thin walled portion in the vicinity of the fillet portion rising radially outward from the axial end of the periphery of the shaft portion is detected, and a cooling medium is supplied to the surface of the thin walled portion at a predetermined temperature. This is a method and apparatus for controlling the thin wall portion to prevent the temperature from rising above a predetermined temperature.
（を足手段による作用）
上記手段によれば、前述の条件を制御することなくフィ
レット部近傍の薄肉部の温度を検出してこれの過加熱を
防止するので焼入れ時に薄肉部、軸部との間の冷却条件
の差が小さくなり、焼割れが防１Ｆでき、フィレット部
、軸部に必要な焼入れ処理が行え、更に制御が容易であ
る′。(Function by the foot means) According to the above means, the temperature of the thin wall part near the fillet part is detected and overheating of the thin wall part is prevented without controlling the above-mentioned conditions. The difference in cooling conditions between the two is reduced, quench cracking can be prevented by 1F, the necessary hardening treatment can be performed on the fillet and shaft parts, and control is easier.
（実施例）
次に本発明の好適する一実施例を添付図面を参照しつつ
詳述する。(Embodiment) Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
尚、実施例の説明の便宜上方法と装置とを併せて説明す
る。Incidentally, for convenience of explanation of the embodiments, the method and the apparatus will be explained together.
第１図はピン部の焼入れを示す図で、（１）はクランク
シャフトを示す、クランクシャフト（１）のピン部（２
）はピン部の要部を構成する軸部（３）と、該軸部（３
）の軸方向両端部から径方向外方に立ちとった両側のフ
ィレット部（４）とからなり、軸部（３）の周面（３ａ
）とフィレット部（４）の対向する内壁面（４ａ） 、
（４ａ）で囲まれる凹状空間（Ｓ）内に高周波加熱コ
イルを構成する誘導加熱コイル（ＩＩ）。Figure 1 is a diagram showing the hardening of the pin part, where (1) shows the crankshaft, and the pin part (2) of the crankshaft (1).
) is the shaft part (3) that constitutes the main part of the pin part, and the shaft part (3)
), and the peripheral surface (3a
) and the opposing inner wall surface (4a) of the fillet part (4),
(4a) An induction heating coil (II) that constitutes a high-frequency heating coil in a concave space (S) surrounded by.
（１１）を臨ませ、コイル（１１）、（１１）と軸部周
而（３ａ）、フィレット部壁面（４ａ）、（４ａ）との
間にはクリアランスを保持する。(11) is faced, and a clearance is maintained between the coils (11), (11) and the periphery of the shaft (3a) and the fillet wall (4a), (4a).
フィレット部（４）、（４）の外方の部分は軸方向への
厚さが少ない薄肉部分（５）、（５）を構成し、該薄肉
部分（５）、（５）の各外方且つ上方には該部分の外表
面（５ａ） 、 （５ａ）にその噴出孔（２１ａ）・・
・が向くように冷却媒体、例えば空気や冷却用ガス等の
媒体を噴出供給するノズル（２１）、（２１）を配設し
、該各ノズル（２１）、（２１）は配管（２２）に分岐
管（２２ａ） 、 （２２ａ）を介して連通接続され、
配管（２２）は不図示の冷却媒体源に接続されている。The outer portions of the fillet portions (4), (4) constitute thin-walled portions (5), (5) having a small thickness in the axial direction, and each outer portion of the thin-walled portions (5), (5) In addition, there is an outer surface (5a) of the part above, and an ejection hole (21a) in (5a).
Nozzles (21), (21) are arranged to eject and supply a cooling medium, such as air or cooling gas, so that are connected to each other via branch pipes (22a) and (22a),
The pipe (22) is connected to a cooling medium source (not shown).
薄肉部（５）、（５）の形状、肉厚は対称をなし、一方
の薄肉部の軸方向外方には赤外線温度センサ等の温度検
出器（３２）を配設し、これをコントローラ（３３）に
接続して検出温度をコントローラに送信するようにし、
コントローラは演算回路や指令回路、駆動回路等からな
り、コントローラ（３３）を既述の配管（２２）に介設
した弁（３４）に制御可能に接続し、コントローラ（３
３）の指令で駆動回路等により弁（３４）を開閉する如
く構成し、かかる温度検出器（３２）、コントローラ（
３３）、弁（３４）で制御手段（３１）を構成する。The shapes and wall thicknesses of the thin-walled parts (5) and (5) are symmetrical, and a temperature detector (32) such as an infrared temperature sensor is disposed axially outward of one of the thin-walled parts, and this is connected to the controller ( 33) to send the detected temperature to the controller,
The controller consists of an arithmetic circuit, a command circuit, a drive circuit, etc., and the controller (33) is controllably connected to the valve (34) installed in the pipe (22) described above.
The valve (34) is configured to be opened and closed by a drive circuit or the like in response to the command (3), and the temperature sensor (32) and controller (
33), the valve (34) constitutes a control means (31).
以上のピン部（２）のフィレット部（４）、（４）の径
方向外方には、鋼板やセラミック板等で形成せる耐熱遮
蔽板（４１）、（４１）を配設し、ノズル（２１） 、
（２１）からの冷却媒体が軸部（３）の周面（３ａ）に
侵入しないように遮蔽する。Heat-resistant shielding plates (41), (41) made of steel plates, ceramic plates, etc. are arranged radially outward of the fillet parts (4), (4) of the pin part (2), and the nozzle ( 21),
(21) to prevent the cooling medium from entering the peripheral surface (3a) of the shaft (3).
次に以上の装置による高周波焼入方法について説明する
と、コイル（１１）によりピン部（２）の軸部（３）の
周面（３ａ）、フィレット部（４）の内壁面（４ａ）、
（４ａ）を加熱し１例えばクランクシャフトの素材とし
てはＪＩＳ ５４ＢＣ材を使用し、クランクシャフト形
状に熱間鍛造加工後ピン部、ジャーナル部に機械加工を
施して既述の装置にセットして加熱した。Next, the induction hardening method using the above-mentioned device will be explained. The coil (11) is used to heat the peripheral surface (3a) of the shaft portion (3) of the pin portion (2), the inner wall surface (4a) of the fillet portion (4),
(4a) 1 For example, use JIS 54BC material as the material for the crankshaft, hot forge it into the shape of the crankshaft, then machine the pin and journal parts, set it in the device described above, and heat it. did.
加熱によりフィレット部（４）近傍の薄肉部（５）の温
度が上昇し、検出器（３２）による検出温度が８５０℃
を越えた処で弁（３４）を開き、ノズル（２１） 。Due to heating, the temperature of the thin wall portion (5) near the fillet portion (4) increases, and the temperature detected by the detector (32) reaches 850°C.
Open the valve (34) beyond the nozzle (21).
（２１）から冷却媒体として圧縮空気を噴射し、Ｓ内部
（５）、（５）の表面（５ａ） 、 （５ａ）に供給し
た。この冷却の結果薄肉部（５）の温度が低下し、８０
０℃以下になったので検出器（３２）の検出で弁（３４
）をコントローラ（３３）の指令により閉じ、ノズル（
２１）、（２１）への圧気の供給を停止し、薄肉部の冷
却を停止した０以上の操作を反復するうちに軸部（３）
の周面（３ａ）、フィレット部（４）の内壁（４ａ）、
（４ａ）が焼入温度迄上昇し、爾後加熱を停止し、加熱
コイル（１１）に隣接して設けた冷却水ノズル（１２）
から冷却水を噴射し、冷却を行ってピン部、ジャーナル
部の軸部、フィレット部の焼入れを行った。Compressed air was injected as a cooling medium from (21) and supplied to the inside of S (5) and the surfaces (5a) and (5a) of (5). As a result of this cooling, the temperature of the thin wall portion (5) decreases to 80
Since the temperature was below 0℃, the valve (34) was detected by the detector (32).
) is closed by the command of the controller (33), and the nozzle (
21), the supply of pressurized air to (21) was stopped, and cooling of the thin-walled part was stopped.While repeating the above operation, the shaft part (3)
the peripheral surface (3a), the inner wall (4a) of the fillet part (4),
(4a) rises to the quenching temperature, then the heating is stopped and the cooling water nozzle (12) installed adjacent to the heating coil (11)
Cooling water was injected from the pipe to cool the pin, journal shaft, and fillet part to harden them.
ところで上記薄肉部（５）、（５）の冷却にさいし。By the way, regarding the cooling of the thin-walled parts (5), (5).
冷却媒体はジャーナル部の軸部に侵入し、これによるヒ
ートマスが大きく加熱を継続して昇温する必要がある軸
部が冷却されてしまうこととなる。The cooling medium enters the shaft portion of the journal portion, and the resulting heat mass is large, and the shaft portion, which needs to be heated continuously and raised in temperature, is cooled down.
そこで遮蔽板（４１）、（４１）が設けられていること
から冷却媒体の侵入を防止し、軸部、フィレット部の加
熱を円滑に行わせた。Therefore, since the shielding plates (41) and (41) are provided, the intrusion of the cooling medium is prevented and the shaft portion and fillet portion are heated smoothly.
以上の焼入れ処理の結果、クランクシャフトのピン部、
ジャーナル部のフィレット部近傍の薄肉部に割れは発生
せず、良好な焼入硬化層と焼入深さ、焼入硬度を有する
クランクシャフトが得られた。As a result of the above hardening process, the pin part of the crankshaft,
No cracking occurred in the thin wall portion near the fillet portion of the journal portion, and a crankshaft with good quench-hardened layer, quench depth, and quench hardness was obtained.
実施例に用いた焼入条件及び結果を次に示す。The quenching conditions and results used in the examples are shown below.
第２図はジャーナル部の焼入装若を示し、（１０２）は
ジャーナル部、（１０３）は軸部、（１０４）はフィレ
ット部、（１０５）は薄肉部、（１１１）は加熱コイル
、 （＋２１）、（１２１）はノズル、 （＋２２）は
配管。Figure 2 shows the hardening of the journal part, (102) is the journal part, (103) is the shaft part, (104) is the fillet part, (105) is the thin part, (111) is the heating coil, ( +21), (121) are nozzles, (+22) are piping.
（１３１）、（１３１）は制御手段、（１３２）は温度
検出器。(131) and (131) are control means, and (132) is a temperature detector.
（＋３３）はコントローラ、Ｃ１３４）は弁、 （１４
１）、（１４１）は遮蔽板である。(+33) is the controller, C134) is the valve, (14
1) and (141) are shielding plates.
木実施例ｔ１１Ｌ’１ｌ（１０５）、（１０５） ｆｔ
＜ １８０°ａｌｌｌして対称的に形成されているため
二個のノズルと制得手段を対称的に設けたものである。Tree example t11L'1l (105), (105) ft
Since the nozzles and the control means are symmetrically formed at <180 degrees, the two nozzles and the control means are provided symmetrically.
（発明の効果）
以上で明らかな如く本発明によれば、クランクシャフト
ビン、ジャーナル部のフィレット部分付近の薄肉部の過
加熱を防市出来るので焼割れの発生を防ｒ１＝出来、特
に薄肉部の温度を検出し、該薄肉部に圧気等の冷却媒体
を供給して昇温を防止するので従来の加熱条件等の制御
に比して制御が容易であり、且つ精度の良い正確な制御
が行え、焼割れ防止法としては画期的である。(Effects of the Invention) As is clear from the above, according to the present invention, it is possible to prevent overheating of the thin-walled portion near the fillet portion of the crankshaft pin and journal portion, thereby preventing the occurrence of quenching cracks, especially in the thin-walled portion. It detects the temperature of the thin wall and supplies a cooling medium such as pressurized air to the thin wall part to prevent the temperature from rising, making it easier to control compared to conventional control of heating conditions, etc., and more accurate control is possible. This is a revolutionary method for preventing quench cracking.
又、焼割れが防止出来るので所定の焼入箇所に均一な焼
入硬化層、焼入硬化深さ、焼入硬度が得られ、機能上要
求される耐摩耗性、疲労強度等に優れたクランクシャフ
トが得られる。そしてクランクシャフトビン、ジャーナ
ル部フィレット部分付近の薄肉部の温度を冷却媒体を噴
出する噴出ノズルとこの薄肉部の温度を検出する温度検
出器により精度の良い温度制御ができる事と併せ実施例
の如く遮蔽板を設ける事によりクランクシャフトビン、
ジャーナル部及びそのフィレット部の温度を不安定にす
る事なく安定的に維持し、クランクシャフトビン、ジャ
ーナル部及びそのフィレット部の温度を均一に効率良く
加熱する事が出来、生産効率の高い１品質の安定した良
好なりランクシャフトを得る事が出来る。In addition, since quench cracking can be prevented, a uniform quench-hardened layer, quench-hardened depth, and quench hardness can be obtained at predetermined quenched locations, resulting in cranks with excellent wear resistance, fatigue strength, etc. required for functionality. You will get the shaft. In addition, the temperature of the thin-walled portion near the fillet portion of the crankshaft bin and journal can be controlled with high accuracy using a jet nozzle that spouts cooling medium and a temperature detector that detects the temperature of this thin-walled portion, as in the embodiment. By installing a shielding plate, the crankshaft bin,
The temperature of the journal part and its fillet part can be maintained stably without becoming unstable, and the temperature of the crankshaft bin, journal part and its fillet part can be heated uniformly and efficiently, making it a quality product with high production efficiency. You can get a stable and good rank shaft.
図面は本発明の一実施例を示すもので、第１図はクラン
クビンの焼入方法及び装置を示す図、第２図はクランク
ジャーナルの同様の図、７ｉＩＪ３図及び第４図は問題
点を指摘する図である。
尚、図面中（１）はクランクシャフト、（２）はビン部
、（１０２）はジャーナル部、（５） 、（１０５）は
薄肉部、（１１）、（１１１）は高周波加熱機構、（３
１）、（１３１）は制御手段、（３２） 、（１３２）
は温度検出器、 （３３）、（＋３３）はコントローラ
、（３４）、（１３４）は弁、（４１）、（１４１）は
遮蔽板である。The drawings show one embodiment of the present invention; Fig. 1 is a diagram showing a method and apparatus for hardening a crank bottle, Fig. 2 is a similar diagram of a crank journal, and Figs. 7iIJ3 and 4 illustrate problems. This is a diagram to point out. In the drawings, (1) is the crankshaft, (2) is the bottle part, (102) is the journal part, (5) and (105) are the thin parts, (11) and (111) are the high frequency heating mechanism, and (3
1), (131) are control means, (32), (132)
is a temperature detector, (33) and (+33) are controllers, (34) and (134) are valves, and (41) and (141) are shield plates.
Claims (6)
分の外周に臨ませた高周波加熱機構で焼入れするように
した方法であって、前記ピン部やジャーナル部の軸部周
の軸方向端部から径方向外方に立ち上がるフィレット部
近傍の薄肉部の前記加熱による温度を検出し、該温度が
所定温度以上で該薄肉部表面に冷却媒体を供給し、該薄
肉部の所定温度以上の昇温を防止すべく制御するように
したことを特徴とするクランクシャフトの焼入方法。(1) A method in which a pin portion or a journal portion of a crankshaft is hardened using a high-frequency heating mechanism facing the outer periphery of the portion, the method including hardening the pin portion or journal portion of the crankshaft from the axial end of the shaft portion of the pin portion or journal portion. The temperature of the thin walled portion near the fillet portion rising outward in the radial direction due to the heating is detected, and when the temperature reaches a predetermined temperature or higher, a cooling medium is supplied to the surface of the thin walled portion to prevent the temperature of the thin walled portion from rising above the predetermined temperature. A method for quenching a crankshaft, characterized in that the method is controlled to prevent the quenching.
定温度以下で供給を停止し、以上を反復するようにした
前記特許請求の範囲第１項のクランクシャフトの焼入方
法。(2) The crankshaft quenching method according to claim 1, wherein the control is such that the cooling medium is supplied at a predetermined temperature or higher, the supply is stopped at a predetermined temperature or lower, and the above process is repeated.
するようにした前記特許請求の範囲第１項のクランクシ
ャフトの焼入方法。(3) The method of quenching a crankshaft according to claim 1, wherein the cooling medium is blocked from being supplied to the periphery of the shaft.
外周に臨ませた高周波加熱機構と、該軸部の軸方向端部
から径方向外方に立ち上ったフィレット部近傍の薄肉部
外方に臨ませた冷却媒体供給手段と、該薄肉部の温度を
検出し、該温度が所定以上で冷却媒体供給手段から冷却
媒体を薄肉部表面に供給すべく制御する制御手段とから
なるクランクシャフトの焼入装置。(4) The high-frequency heating mechanism faces the outer periphery of the shaft of the crankshaft pin and journal, and the thin wall near the fillet that rises radially outward from the axial end of the shaft. and a control means that detects the temperature of the thin walled portion and controls the cooling medium supplying means to supply the cooling medium to the surface of the thin walled portion when the temperature is higher than a predetermined temperature. Device.
器の検出信号で作動するコントローラと、該コントロー
ラの指令で開閉する前記冷却媒体供給手段の系路に介設
された弁からなる前記特許請求の範囲第４項のクランク
シャフトの焼入装置。(5) The control means includes a temperature detector for the thin wall portion, a controller operated by a detection signal from the detector, and a valve interposed in the system of the cooling medium supply means that opens and closes according to commands from the controller. A crankshaft hardening device according to claim 4.
記特許請求の範囲第４項のクランクシャフトの焼入装置
。(6) The crankshaft hardening device according to claim 4, wherein shielding plates are provided radially outwardly at both ends of the shaft portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP864586A JPS62167823A (en) | 1986-01-17 | 1986-01-17 | Method and device for hardening crank shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP864586A JPS62167823A (en) | 1986-01-17 | 1986-01-17 | Method and device for hardening crank shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62167823A true JPS62167823A (en) | 1987-07-24 |
Family
ID=11698683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP864586A Pending JPS62167823A (en) | 1986-01-17 | 1986-01-17 | Method and device for hardening crank shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62167823A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676784A (en) * | 2012-05-09 | 2012-09-19 | 陕西北方动力有限责任公司 | Stagger crankshaft connecting rod neck quenching method based on KWH (Kilowatt Hour) semiautomatic quenching machine tool |
| CN111004897A (en) * | 2019-12-27 | 2020-04-14 | 辽宁科创重型内燃机曲轴有限公司 | Method for induction quenching of engine crankshaft |
-
1986
- 1986-01-17 JP JP864586A patent/JPS62167823A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676784A (en) * | 2012-05-09 | 2012-09-19 | 陕西北方动力有限责任公司 | Stagger crankshaft connecting rod neck quenching method based on KWH (Kilowatt Hour) semiautomatic quenching machine tool |
| CN102676784B (en) * | 2012-05-09 | 2014-08-20 | 陕西北方动力有限责任公司 | Stagger crankshaft connecting rod neck quenching method based on KWH (Kilowatt Hour) semiautomatic quenching machine tool |
| CN111004897A (en) * | 2019-12-27 | 2020-04-14 | 辽宁科创重型内燃机曲轴有限公司 | Method for induction quenching of engine crankshaft |
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