JP3655929B2 - Induction heating device - Google Patents
Induction heating device Download PDFInfo
- 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
- Authority
- JP
- Japan
- Prior art keywords
- crankpin
- width
- inductor
- induction heating
- arc
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0006—Electric heating elements or system
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
- C21D1/10—Surface hardening by direct application of electrical or wave energy; by particle radiation by electric induction
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/40—Establishing desired heat distribution, e.g. to heat particular parts of workpieces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0006—Electric heating elements or system
- F27D2099/0015—Induction heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D2099/0058—Means for heating the charge locally
-
- 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
- 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4及び図6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b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4及び図6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5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
[0009]
The
[0010]
The induction hardening apparatus includes two
[0011]
Crankpin 11a positioned between the
[0012]
By the way, in order to prevent the two
[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)
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)
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)
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 |
-
1992
- 1992-10-31 DE DE4236921A patent/DE4236921C1/en not_active Expired - Lifetime
-
1993
- 1993-10-26 FR FR9312761A patent/FR2697712B1/en not_active Expired - Lifetime
- 1993-10-28 IT ITMI932300A patent/IT1272759B/en active IP Right Grant
- 1993-10-29 JP JP27173493A patent/JP3655929B2/en not_active Expired - Lifetime
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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