JP3655929B2 - Induction heating device - Google Patents

Induction heating device Download PDF

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Publication number
JP3655929B2
JP3655929B2 JP27173493A JP27173493A JP3655929B2 JP 3655929 B2 JP3655929 B2 JP 3655929B2 JP 27173493 A JP27173493 A JP 27173493A JP 27173493 A JP27173493 A JP 27173493A JP 3655929 B2 JP3655929 B2 JP 3655929B2
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Japan
Prior art keywords
crankpin
width
inductor
induction heating
arc
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Expired - Lifetime
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JP27173493A
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Japanese (ja)
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JPH06212270A (en
Inventor
ラインケ フリートヘルム
ゲツァルツィック ヴァルデマール
シュテンゲル エドガー
Original Assignee
エロテルム ゲゼルシャフト ミット ベシュレンクテル ハフツング
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00Subject matter not provided for in other groups of this subclass
    • F27D99/0001Heating elements or systems
    • F27D99/0006Electric heating elements or system
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06Surface hardening
    • C21D1/09Surface hardening by direct application of electrical or wave energy; by particle radiation
    • C21D1/10Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/30Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/02Induction heating
    • H05B6/36Coil arrangements
    • H05B6/40Establishing desired heat distribution, e.g. to heat particular parts of workpieces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00Subject matter not provided for in other groups of this subclass
    • F27D99/0001Heating elements or systems
    • F27D99/0006Electric heating elements or system
    • F27D2099/0015Induction heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00Subject matter not provided for in other groups of this subclass
    • F27D99/0001Heating elements or systems
    • F27D2099/0058Means for heating the charge locally
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Heat Treatment Of Articles (AREA)
  • General Induction Heating (AREA)

Description

【0001】
【産業上の利用分野】
本発明は、クランク軸の互いに直接隣接しかつ互いに相互の偏心位置で接合してかつ横断面で見て互いに部分的にオーバーラップしたクランクピンの表面を硬化するために該クランクピンの相対する側に位置していてかつ互いに対向して相対移動する2つの誘導子を用いて電気誘導加熱し、かつ引続き急冷するための装置であって、各誘導子がそれぞれクランクピンの円弧に沿って配置されており、かつ誘導子の幅がクランクピンの切削加工幅よりも小さく、かつ誘導子が、クランクピンの円弧に対応する円弧状の作用面を有しており、該作用面が最大でもクランクピン間のオーバーラップ円弧と等しい長さを有している形式のものに関する。
【0002】
【従来の技術】
上記の種類の特徴を持つ装置はDE3613909C1から公知である。しかしこの装置は、クランクピン面とクランクアームとの間の移行領域、すなわちいわゆるアール(Radius)を十分には焼入れしないのが欠点である。
【0003】
DE4001887C2から公知の装置では上記の刊行物とは異なり誘導子は互いに反対側にではなく同じ側にある、これは誘導子相互の影響を避けるために電気的なシールドを必要とする。さらにこの構成では誘導子が緊密に隣り合っており、かつ得られるスペースが比較的小さいためにスペース不足が生じる。
【0004】
【発明が解決しようとする課題】
本発明の課題は、狭いスペースにもかかわらず丸形みぞ(これはクランクピン面から1つには隣のクランクアームへの、もう1つには隣のクランクピンへのアールの形の移行部である)内まで十分な焼入れが行われるように上記の形式の電気誘導加熱装置を改良することである。
【0005】
【課題を解決するための手段】
上記の課題を解決するための本発明の手段は、誘導子の幅がクランクピン背部の幅よりも大きいことである。
【0006】
【発明の効果】
本発明の特徴はクランクピン面に続く丸形みぞの領域においても有効な加熱を保証する。
【0007】
【実施例】
図面において同一の部材は同一の符号が付けられている。
【0008】
全体的に符号1で示された誘導加熱装置または誘導硬化装置は空気圧式または油圧式の駆動ユニット2を用いて開放(休止)位置(図1)と閉鎖(作業)位置(図2)との間で旋回可能にトラヴァース3に支承されている。トラヴァース3は平行四辺形ガイド4を介して揺動するように配置されている。トラヴァース3はガイドロッド5によって鉛直方向に可動に案内されている。ガイドロッド5はカウンタウエイト6によって重量除荷されている。カウンタウエイトはローラ7,8を介して案内されたロープ9によってガイドロッド5と結合されている。
【0009】
互いに隣接したクランクピン11a,11bを備えたクランク軸10は誘導硬化装置またはクランク軸の昇降によって図2に示された作業位置へもたらされる。
【0010】
誘導硬化装置はワークにおいて直径方向に対向している2つの誘導子12と急冷シャワー13とを備えている。接続部14が両誘導子への冷却水の供給に用いられ、かつ急冷流体は図2から一番良く判るように供給管路15を介して急冷シャワー13へ供給される。クランク軸10は中央でローラ16によって支持されている。
【0011】
クランク軸10のクランクアーム18間に位置したクランクピン11a,11bは図3及び図5に示してあるように互いに直接隣接してかつ互いに相互の偏心位置で接合していてかつ図及び図で見て互いに部分的にオーバーラップしている。この場合、クランクピン11a,11b間の互いにオーバーラップしている部分の円周を、オーバーラップ円弧と称する。ここではクランクピンの切削加工によって成形される表面の幅、即ち切削加工幅sはクランクピン背部11cの幅eよりも大きく選択されている。クランク軸10のところでクランクピン11a,11bの相対する側に位置していてかつ誘導加熱中に互いに対向して相対移動する両誘導子12の幅は切削加工幅sよりも小さいが、クランクピン背部11cの幅eよりも大きい。
【0012】
ところで両誘導子12が誘導加熱中に互いに対向して相対移動して互いに最も接近する、図5,6に見られる状態で互いに接触しないようにするためには誘導子12の、クランクピン11a,11bの円弧(円周)に対応する円弧状の作用面19の長さlは図及び図から最も良く示されているように最大でもクランクピン11a,11bのオーバーラップ円弧20の長さaと等しいものでなくてはならない。最大でa=lであって良い。
【図面の簡単な説明】
【図1】表面硬化すべきクランクピンを受容する準備状態にある誘導子が休止位置で開かれている、クランク軸のための誘導硬化装置の全体図である。
【図2】誘導子がクランク軸のクランクピンに対する作業位置で閉じられている、硬化装置の下方部分の図である。
【図3】誘導子が最大相互間隔位置にある時の隣接したクランクピンの図である。
【図4】図3の横断面図である。
【図5】誘導子が最小相互間隔の作用位置にある時の隣接したクランクピンの図である。
【図6】図の横断面図である。
[0001]
[Industrial application fields]
The invention, of the crankshaft, opposite of the crank pin in order to cure the directly adjacent and joined at an eccentric position of the mutual and the surface of the crank pin partially overlap each other when viewed in cross section to one another to one another A device for electric induction heating and subsequent rapid cooling using two inductors that are located on the side and move relative to each other, each inductor being arranged along an arc of a crankpin And the width of the inductor is smaller than the machining width of the crankpin, and the inductor has an arcuate working surface corresponding to the arc of the crankpin. It relates to a type having a length equal to an overlap arc between pins.
[0002]
[Prior art]
A device having the above type of characteristics is known from DE 3613909 C1. However, this device has the disadvantage that it does not fully quench the transition region between the crankpin face and the crank arm, ie the so-called Radius.
[0003]
In the device known from DE 4001887C2, unlike the publications mentioned above, the inductors are on the same side, not on the opposite side, which requires an electrical shield to avoid the mutual influence of the inductors. Further, in this configuration, the inductors are closely adjacent to each other, and the space obtained is relatively small, resulting in insufficient space.
[0004]
[Problems to be solved by the invention]
The object of the present invention is to make a round groove (this is a round-shaped transition from the crankpin face to the next crank arm, one to the next crankpin, despite the narrow space) The electric induction heating apparatus of the above type is improved so that sufficient quenching is performed.
[0005]
[Means for Solving the Problems]
The means of the present invention for solving the above problem is that the width of the inductor is larger than the width of the crankpin back portion.
[0006]
【The invention's effect】
The features of the present invention ensure effective heating even in the area of the round groove following the crankpin surface.
[0007]
【Example】
In the drawings, the same members are denoted by the same reference numerals.
[0008]
An induction heating device or induction curing device generally indicated by reference numeral 1 uses a pneumatic or hydraulic drive unit 2 to switch between an open (pause) position (FIG. 1) and a closed (work) position (FIG. 2). It is supported by Traverse 3 so that it can turn between. The traverse 3 is arranged so as to swing through the parallelogram guide 4. The traverse 3 is guided by a guide rod 5 so as to be movable in the vertical direction. The weight of the guide rod 5 is unloaded by the counterweight 6. The counterweight is connected to the guide rod 5 by a rope 9 guided through rollers 7 and 8.
[0009]
The crankshaft 10 with the crankpins 11a and 11b adjacent to each other is brought to the working position shown in FIG. 2 by induction hardening device or by raising and lowering the crankshaft.
[0010]
The induction hardening apparatus includes two inductors 12 and a quenching shower 13 that are opposed to each other in the diameter direction in the workpiece. The connection 14 is used to supply cooling water to both inductors, and the quench fluid is supplied to the quench shower 13 via the supply line 15 as best seen in FIG. The crankshaft 10 is supported by a roller 16 at the center.
[0011]
Crankpin 11a positioned between the crank arm 18 of the crankshaft 10, 11b is and 4 and have joined adjacent directly to each other as is shown in FIGS. 3 and 5 and the mutual eccentric position with each other 6 partially overlap each other. In this case, the circumference of the overlapping portion between the crankpins 11a and 11b is referred to as an overlapping arc. Here, the width of the surface formed by cutting the crankpin, that is, the cutting width s is selected to be larger than the width e of the crankpin back portion 11c. Although the width b of both inductors 12 which are located on the opposite sides of the crankpins 11a and 11b at the crankshaft 10 and which move relative to each other during induction heating is smaller than the cutting width s, It is larger than the width e of the back part 11c.
[0012]
By the way, in order to prevent the two inductors 12 from moving relative to each other during the induction heating so as to be closest to each other, as shown in FIGS. the length of the 11b of the arc length l crankpin 11a at the maximum, as best shown in FIG. 4 and FIG. 6 of the arc-shaped working surface 19 corresponding to the (circumferential), 11b overlap the arc 20 Must be equal to a. It may be a = 1 at maximum.
[Brief description of the drawings]
FIG. 1 is an overall view of an induction hardening device for a crankshaft with an inductor ready to receive a crankpin to be surface hardened, opened in a rest position.
FIG. 2 is a view of the lower part of the curing device with the inductor closed in a working position relative to the crankshaft crankpin.
FIG. 3 is a view of adjacent crank pins when the inductors are at their maximum mutual spacing position.
4 is a cross-sectional view of FIG.
FIG. 5 is a view of adjacent crankpins when the inductors are in a minimum mutual spacing operating position.
6 is a cross-sectional view of FIG.

Claims (1)

クランク軸の互いに直接隣接しかつ互いに相互の偏心位置で接合してかつ横断面で見て互いに部分的にオーバーラップしたクランクピン(11a,11b)の表面を硬化するために該クランクピンの相対する側に位置していてかつ互いに対向して相対移動する2つの誘導子(12)を用いて電気誘導加熱し、かつ引続き急冷するための装置であって、各誘導子がそれぞれクランクピンの円弧に沿って配置されており、かつ誘導子の幅(b)がクランクピンの切削加工幅(s)よりも小さく、かつ誘導子が、クランクピンの円弧に対応する円弧状の作用面を有しており、該作用面が最大でもクランクピン間のオーバーラップ円弧と等しい長さを有している形式のものにおいて、誘導子(12)の幅(b)がクランクピン背部(11c)の幅(e)よりも大きいことを特徴とする、誘導加熱装置。Of the crankshaft, the crank pin (11a, 11b) of the crank pin in order to cure the surface of the relative which partially overlap each other when viewed directly adjacent and joined at an eccentric position of the cross and in cross-section to each other to each other A device for electrically induction heating using two inductors (12) which are located on the side to be moved and which move relative to each other, and for subsequent rapid cooling, wherein each inductor is an arc of a crankpin. And the width (b) of the inductor is smaller than the cutting width (s) of the crankpin, and the inductor has an arcuate working surface corresponding to the arc of the crankpin. And the width (b) of the inductor (12) is equal to the width of the crankpin back (11c) (where the working surface has a length equal to the overlap arc between the crank pins at the maximum). ) It is larger than the induction heating device.
JP27173493A 1992-10-31 1993-10-29 Induction heating device Expired - Lifetime JP3655929B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4236921.5 1992-10-31
DE4236921A DE4236921C1 (en) 1992-10-31 1992-10-31 Inductive heating installation for surface hardening - with the width and length of arc-shaped inductors chosen dependent on the geometry of continuous crank journals

Publications (2)

Publication Number Publication Date
JPH06212270A JPH06212270A (en) 1994-08-02
JP3655929B2 true JP3655929B2 (en) 2005-06-02

Family

ID=6471881

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27173493A Expired - Lifetime JP3655929B2 (en) 1992-10-31 1993-10-29 Induction heating device

Country Status (4)

Country Link
JP (1) JP3655929B2 (en)
DE (1) DE4236921C1 (en)
FR (1) FR2697712B1 (en)
IT (1) IT1272759B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19530430C1 (en) * 1995-08-18 1996-04-11 Aeg Elotherm Gmbh Electro-inductive bearing surface hardening appts.
DE19752237A1 (en) * 1997-11-26 1999-05-27 Kessler Kg Maschf Apparatus for electroinductive hardening of crankshaft bearing surfaces and transition radii
WO2000063447A2 (en) * 1999-04-16 2000-10-26 Elotherm Gmbh Method and device for hardening surfaces of a crankshaft or camshaft
DE19955670B4 (en) * 1999-11-19 2009-10-01 Sms Elotherm Gmbh Method and device for hardening surfaces of a crankshaft or camshaft

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210510A (en) * 1962-12-31 1965-10-05 Int Harvester Co Inductor with anti-jam feature
US4123644A (en) * 1977-02-14 1978-10-31 Park-Ohio Industries, Inc. Device for inductively heating cylindrical surfaces
DE3613909C1 (en) * 1986-04-24 1987-01-08 Kessler Kg Maschf Method and apparatus for the hardening of running faces and transition radii of crankshaft offset journals arranged directly one behind the other
DE4001887A1 (en) * 1990-01-23 1991-07-25 Kessler Kg Maschf METHOD AND DEVICE FOR INDUCTIVE HARDENING

Also Published As

Publication number Publication date
ITMI932300A0 (en) 1993-10-28
FR2697712A1 (en) 1994-05-06
DE4236921C1 (en) 1993-09-16
ITMI932300A1 (en) 1995-04-28
JPH06212270A (en) 1994-08-02
FR2697712B1 (en) 1996-09-06
IT1272759B (en) 1997-06-26

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