DE4228093C1 - Hardening of bearing surfaces of different size crankshaft - comprises two inductor sets, each inductor is adapted for a specific crankshaft having associated transformers, connecting lead, cooling and quenching pipes, etc. - Google Patents

Hardening of bearing surfaces of different size crankshaft - comprises two inductor sets, each inductor is adapted for a specific crankshaft having associated transformers, connecting lead, cooling and quenching pipes, etc.

Info

Publication number
DE4228093C1
DE4228093C1 DE4228093A DE4228093A DE4228093C1 DE 4228093 C1 DE4228093 C1 DE 4228093C1 DE 4228093 A DE4228093 A DE 4228093A DE 4228093 A DE4228093 A DE 4228093A DE 4228093 C1 DE4228093 C1 DE 4228093C1
Authority
DE
Germany
Prior art keywords
crankshaft
inductor
inductors
hardening
bearing surfaces
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
Application number
DE4228093A
Other languages
German (de)
Inventor
Waldemar 5630 Remscheid De Gezarzick
Ludwin 5068 Odenthal De Hackenberger
Ljubomir 5630 Remscheid De Milenkovic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Elotherm GmbH
Original Assignee
AEG Elotherm GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AEG Elotherm GmbH filed Critical AEG Elotherm GmbH
Priority to DE9212427U priority Critical patent/DE9212427U1/en
Priority to DE4228093A priority patent/DE4228093C1/en
Application granted granted Critical
Publication of DE4228093C1 publication Critical patent/DE4228093C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The bearing surfaces of crankshafts of different sizes are successively hardened by an arrangement of at least two inductor sets, each of inductors adapted to a specific crankshaft type, with associated transformers, electrical connecting leads, cooling and quenching piping and lifting and lowering mechanism. The sets can be moved from a parking position to an operative position, where they can be automatically coupled to the power supply. ADVANTAGE - Acceleration of change-over times.

Description

Die Erfindung betrifft eine Vorrichtung zum aufeinanderfolgenden Härten der Lagerflächen von unterschiedlich dimensionierten Kurbelwellen von Brennkraftmaschinen mit Hilfe von zwei oder mehreren in senkrechten Ebenen beweglichen Induktoren.The invention relates to a device for successive hardening of the bearing surfaces of different sized crankshafts from Internal combustion engines using two or more in vertical planes movable inductors.

Derartige Vorrichtungen sind bekannt. Bei einer bekannten Ausführung gemäß DE 38 36 268 A1 ist der Induktor mit zugehörigem Transformator zu einer beweglichen Baueinheit verbunden. Es ist ferner schon vorgeschlagen worden, DE 38 42 808 A1, die zu einem Induktorsatz gehörenden Induktoren zur Anpassung an unterschiedliche Lagerabstände einer Kurbelwelle in Achsrichtung desselben gegeneinander verschieblich anzuordnen.Such devices are known. With a known Version according to DE 38 36 268 A1 is the inductor associated transformer to a movable unit connected. It has also been suggested DE 38 42 808 A1, which belong to an inductor set Inductors to adapt to different bearing distances a crankshaft in the same axial direction against each other to be moved.

Um die induktive Härtevorrichtung an unterschiedliche Kurbelwellentypen mit unterschiedlich dimensionierten Lagern anzupassen, mußte man bisher immer die Induktoren auswechseln. Die Induktoren haben nämlich Öffnungen für das teilweise Umfassen der im Querschnitt kreisförmigen Lagerflächen, die dem Lagerdurchmesser naturgemäß angepaßt sein müssen. To the inductive hardening device to different Crankshaft types with different dimensions Up to now, the inductors have always had to be adapted to bearings replace. The inductors have openings for partially encompassing the circular cross-section Storage areas that are naturally adapted to the bearing diameter have to be.  

Die Induktoren sitzen als sogenannte reitende Induktoren auf den zu härtenden Lagerflächen und bewegen sich während des Umlaufs der zu härtenden Kurbelwelle auf einer Kreisbahn, die das Kurbellager beschreibt. Beim Härten der Kurbelwellenlager bleibt der Induktor dagegen während des Umlaufs der Kurbelwelle in seiner Lage ortsfest, weil die Kurbellager koaxial sind.The inductors sit as so-called riding inductors on the bearing surfaces to be hardened and move during the rotation of the crankshaft to be hardened a circular path that describes the crank bearing. At the However, the inductor remains hardening of the crankshaft bearings during the rotation of the crankshaft in its position stationary because the crank bearings are coaxial.

Der Erfindung liegt nun die Aufgabe zugrunde, das Umrüsten der induktiven Härtevorrichtung für Kurbelwellen zu erleichtern und insbesondere zu beschleunigen, damit beim Wechsel der Kurbelwellentype die Umrüstzeit verringert werden kann. Wie gesagt, mußten bisher die Induktoren ausgetauscht werden, wenn ein anderer Kurbelwellentyp zur Härtestation transportiert wurde. Dieser Induktorwechsel erforderte beträchtliche Zeit, weil er nicht nur elektrisch, sondern auch kühlmittelseitig angeschlossen ist. Beim Wechsel eines Induktors mußten also der elektrische Anschluß und der Kühlmittelanschluß abmontiert und nach Wechsel des Induktors wieder anmontiert werden. Dadurch ergaben sich beim Umrüsten der Härtevorrichtung erhebliche Totzeiten.The invention is based on the object Converting the inductive hardening device for crankshafts to facilitate and in particular to accelerate the changeover time when changing the crankshaft type can be reduced. As I said, so far they have had to Inductors are exchanged if another Crankshaft type was transported to the hardening station. This inductor change took considerable time because it's not only electric, but also is connected on the coolant side. When changing one So the inductor had the electrical connection and Coolant connection removed and after changing the Be installed again. This resulted in considerable retooling times when converting the hardening device.

Zur Lösung der gestellten Aufgabe wird nun erfindungsgemäß vorgeschlagen, eine Vorrichtung zum aufeinanderfolgenden Härten der Lagerflächen von unterschiedlich dimensionierten Kurbelwellen von Brennkraftmaschinen mit Hilfe von zwei oder mehreren in vertikalen Ebenen beweglichen Induktoren, die in Achsrichtung der Kurbelwelle verschieblich sind, dadurch zu verbessern, daß mindestens zwei Induktorensätze (I, II, III), bestehend jeweils aus einem bestimmten Kurbelwellentyp angepaßten Induktoren mit zugehörigen Transformatoren, elektrischen Anschlußleitungen, Elektrokühl- und Abschreckflüssigkeits-Förderleitungen und Heb- und Senkmechanismus, die in Achsrichtung der zu härtenden Kurbelwelle aus der Wartestellung in die Arbeitsstellung verschiebbar angeordnet sind. Dabei ist jeweils der in die Arbeitsstellung geschobene Induktorsatz (II) an die Stromversorgung selbsttätig ankuppelbar.To solve the task now proposed according to the invention, a device for successive hardening of the bearing surfaces of different sized crankshafts from Internal combustion engines using two or more in vertical planes moving inductors, which in Axial direction of the crankshaft are displaceable to improve that at least two sets of inductors (I, II, III), each consisting of a specific one Crankshaft type adapted inductors with associated Transformers, electrical connecting cables, Electric cooling and quench liquid delivery lines  and lifting and lowering mechanism in the axial direction of the hardening crankshaft from the waiting position into the Working position are slidably arranged. It is the one pushed into the working position Inductor set (II) to the power supply automatically connectable.

Die Erfindung wird am besten anhand der Zeichnung erläutert.The invention is best illustrated by the drawing explained.

Jeder Induktorsatz I, II, III besteht gemäß Fig. 1 aus zwei oder mehreren Induktorgehängen. Im Falle der Fig. 1 sind es jeweils deren drei. Der Aufbau eines Induktorgehänges umfaßt gemäß Fig. 2 den Induktor 1 selbst, den zugehörigen Transformator 2, die elektrische Anschlußleitung 3, die Förderleitung 4 für die Elektrokühl- und Abschreckflüssigkeit, die nach Abschluß der induktiven Erwärmung aus einer in den Induktor integrierten Abschreckbrause auf die erwärmte Werkstückoberfläche zum Härten derselben gespritzt wird, und den Heb- und Senkmechanismus 5. Über eine Steckverbindung 10 ist das Induktorgehänge an die Stromversorgung 12 ankuppelbar.According to FIG. 1, each inductor set I, II, III consists of two or more inductor hangers. In the case of Fig. 1, there are three each. The structure of a Induktorgehänges comprises according to FIG. 2 the inductor 1 itself, the associated transformer 2, the electrical connecting line 3, the feed line 4 for the Elektrokühl- and quenching the heated from an integrated in the inductor quench nozzles on after completion of the inductive heating Workpiece surface is sprayed for hardening the same, and the lifting and lowering mechanism 5 . The inductor suspension can be coupled to the power supply 12 via a plug connection 10 .

Die Erfindung besteht nun darin, von den vorhandenen Induktorsätzen I, II, III jeweils denjenigen durch Verschieben aller Induktorensätze I bis III in Pfeilrichtung 11 parallel zur Achse der zu härtenden Kurbelwelle 6 zu verschieben, bis der den jeweils zu härtenden Kurbelwellentyp angepaßte Induktorsatz in Arbeitsstellung über der Kurbelwelle 6 steht. Bei der Ausführung gemäß Fig. 1 ist es der Induktorsatz II, der an die Stromversorgung angeschlossen ist, während die benachbarten in die Wartestellung verschobenen Induktorensätze I und III vom Stromnetz abgekuppelt sind. The invention now consists of moving the existing inductor sets I, II, III to those by moving all the inductor sets I to III in the direction of arrow 11 parallel to the axis of the crankshaft 6 to be hardened until the inductor set adapted to the hardened crankshaft type is in the working position the crankshaft 6 stands. In the embodiment of Fig. 1 it is the Induktorsatz II, which is connected to the power supply, while the adjacent shifted to the waiting position Induktorensätze I and III disconnected from the mains.

Die elektrische Versorgung der Induktoren umfaßt gemäß Fig. 2 den an das nicht dargestellte Stromnetz angeschlossenen Umrichter 7 und den Kondensatorensatz 8.According to FIG. 2, the electrical supply to the inductors comprises the converter 7 , which is connected to the power network, not shown, and the capacitor set 8 .

Nach Lösen des jeweils in Arbeitsstellung befindlichen Induktorensatzes II und der Stromversorgung werden die Induktorensätze I, II, III soweit verschoben, bis der auf den neuen zu härtenden Kurbelwellentyp angepaßte Induktorsatz in die Arbeitsstellung gelangt ist. Das Anschließen dieses anderen Induktorensatzes an das Stromnetz läßt sich problemlos und schnell ohne manuelle Betätigung durchführen. Der Wechsel des Induktorsatzes kann praktisch im Fördertakt der zu härtenden Kurbelwellen durchgeführt werden.After loosening the one in the working position Inductor set II and the power supply are the Inductor sets I, II, III moved until the on adapted to the new crankshaft type to be hardened Inductor set has reached the working position. The Connect this other set of inductors to the Power grid can be easily and quickly without manual Carry out operation. The change of the inductor set can practically in the conveying cycle of the to be hardened Crankshafts are carried out.

Der apparative Mehraufwand für die erfindungsgemäße Vorrichtung wird überwogen durch den Wegfall der beim Umrüsten entstehenden Totzeiten und manueller Betätigung zum Umrüsten.The additional equipment for the inventive Device is predominated by the elimination of the Retrofit resulting dead times and manual operation to convert.

Claims (1)

Vorrichtung zum aufeinanderfolgenden Härten der Lagerflächen von unterschiedlich dimensionierten Kurbelwellen von Brennkraftmaschinen mit Hilfe von zwei oder mehreren in vertikalen Ebenen beweglichen Induktoren, die in Achsrichtung der Kurbelwelle verschieblich sind, dadurch gekennzeichnet, daß mindestens zwei Induktorensätze (I, II, III), bestehend jeweils aus einem bestimmten Kurbelwellentyp angepaßten Induktoren (1) mit zugehörigen Transformatoren (2), elektrischen Anschlußleitungen (3), Elektrokühl- und Abschreckflüssigkeits-Förderleitungen (4) und Heb- und Senkmechanismus (5), die in Achsrichtung der zu härtenden Kurbelwelle (6) aus der Wartestellung in die Arbeitsstellung verschiebbar angeordnet sind, wobei jeweils der in die Arbeitsstellung geschobene Induktorsatz (II) an die Stromversorgung selbsttätig ankuppelbar ist.Device for the successive hardening of the bearing surfaces of differently dimensioned crankshafts of internal combustion engines with the aid of two or more inductors movable in vertical planes which are displaceable in the axial direction of the crankshaft, characterized in that at least two sets of inductors (I, II, III), each consisting of Inductors ( 1 ) adapted to a specific type of crankshaft with associated transformers ( 2 ), electrical connecting lines ( 3 ), electric cooling and quenching liquid delivery lines ( 4 ) and lifting and lowering mechanisms ( 5 ), which extend in the axial direction of the crankshaft ( 6 ) to be hardened the waiting position are arranged to be displaceable into the working position, the inductor set (II) pushed into the working position being able to be automatically coupled to the power supply.
DE4228093A 1992-08-24 1992-08-24 Hardening of bearing surfaces of different size crankshaft - comprises two inductor sets, each inductor is adapted for a specific crankshaft having associated transformers, connecting lead, cooling and quenching pipes, etc. Expired - Lifetime DE4228093C1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE9212427U DE9212427U1 (en) 1992-08-24 1992-08-24 Device for hardening crankshaft bearing surfaces
DE4228093A DE4228093C1 (en) 1992-08-24 1992-08-24 Hardening of bearing surfaces of different size crankshaft - comprises two inductor sets, each inductor is adapted for a specific crankshaft having associated transformers, connecting lead, cooling and quenching pipes, etc.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4228093A DE4228093C1 (en) 1992-08-24 1992-08-24 Hardening of bearing surfaces of different size crankshaft - comprises two inductor sets, each inductor is adapted for a specific crankshaft having associated transformers, connecting lead, cooling and quenching pipes, etc.

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Publication Number Publication Date
DE4228093C1 true DE4228093C1 (en) 1993-04-08

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DE4228093A Expired - Lifetime DE4228093C1 (en) 1992-08-24 1992-08-24 Hardening of bearing surfaces of different size crankshaft - comprises two inductor sets, each inductor is adapted for a specific crankshaft having associated transformers, connecting lead, cooling and quenching pipes, etc.

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999045157A1 (en) * 1998-03-02 1999-09-10 Elotherm Gmbh Device for hardening cylindrical bearing points of a shaft
DE102005024292A1 (en) * 2005-05-27 2006-11-30 Volkswagen Ag Shaft hardening, especially for raw crankshafts, uses at least one support to hold the shaft during hardening without rotation
EP3426000A4 (en) * 2016-03-02 2019-08-07 NTN Corporation Heat-processing device and heat-processing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3842808C1 (en) * 1988-12-20 1989-08-31 Aeg-Elotherm Gmbh, 5630 Remscheid, De
DE3836268C1 (en) * 1988-10-25 1989-09-07 Aeg-Elotherm Gmbh, 5630 Remscheid, De

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836268C1 (en) * 1988-10-25 1989-09-07 Aeg-Elotherm Gmbh, 5630 Remscheid, De
DE3842808C1 (en) * 1988-12-20 1989-08-31 Aeg-Elotherm Gmbh, 5630 Remscheid, De

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999045157A1 (en) * 1998-03-02 1999-09-10 Elotherm Gmbh Device for hardening cylindrical bearing points of a shaft
DE102005024292A1 (en) * 2005-05-27 2006-11-30 Volkswagen Ag Shaft hardening, especially for raw crankshafts, uses at least one support to hold the shaft during hardening without rotation
EP3426000A4 (en) * 2016-03-02 2019-08-07 NTN Corporation Heat-processing device and heat-processing method
US11408043B2 (en) 2016-03-02 2022-08-09 Ntn Corporation Heat-processing device and heat-processing method

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Legal Events

Date Code Title Description
8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8327 Change in the person/name/address of the patent owner

Owner name: ELOTHERM GMBH, 42855 REMSCHEID, DE

8327 Change in the person/name/address of the patent owner

Owner name: SMS ELOTHERM GMBH, 42897 REMSCHEID, DE

R071 Expiry of right
R071 Expiry of right