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DE3929145C1 - Solid copper inductor for surface hardening workpieces - is split into 2 halves with power supplied to both fixed and movable halves, and is equipped with cooling channels - Google Patents

Solid copper inductor for surface hardening workpieces - is split into 2 halves with power supplied to both fixed and movable halves, and is equipped with cooling channels

Info

Publication number
DE3929145C1
DE3929145C1 DE3929145A DE3929145A DE3929145C1 DE 3929145 C1 DE3929145 C1 DE 3929145C1 DE 3929145 A DE3929145 A DE 3929145A DE 3929145 A DE3929145 A DE 3929145A DE 3929145 C1 DE3929145 C1 DE 3929145C1
Authority
DE
Germany
Prior art keywords
inductor
halves
cooling channels
split
surface hardening
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
DE3929145A
Other languages
German (de)
Inventor
Herbert 6950 Mosbach De Joerg
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.)
RETTENMAIER, HORST, DR., 69434 HIRSCHHORN, DE
Original Assignee
Ema Elektromaschinen Schultze & Co Kg 6932 Hirschhorn De 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 Ema Elektromaschinen Schultze & Co Kg 6932 Hirschhorn De GmbH filed Critical Ema Elektromaschinen Schultze & Co Kg 6932 Hirschhorn De GmbH
Priority to DE3929145A priority Critical patent/DE3929145C1/en
Application granted granted Critical
Publication of DE3929145C1 publication Critical patent/DE3929145C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
    • 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
    • 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)
  • 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

Inductor for surface hardening of workpieces, e.g. crankshafts, drive shafts etc. for vehicles, mounted between clamping units in the hardening machine, is split into two halves transverse to the workpiece. A power source (1) supplies the fixed inductor half via two conductor branches (2a, 2b) and the displaceable half via two further conductor branches (4a, 4b). Contact between the two halves is made at two contact points (6a, 6b), which are displaced w.r.t. each other in the axial direction. Inductor is of solid Cu with cooling channels. ADVANTAGE - Uniform depth of hardness even in contact region.

Description

Die Erfindung bezieht sich auf einen Induktor zum Oberflächen­ härten von Werkstücken gemäß dem Oberbegriff des Patentan­ spruches 1.The invention relates to a surface inductor hardening of workpieces according to the preamble of the patent saying 1.

Bei der Wärmebehandlung von Gelenkwellen, Antriebswellen und ähnlichen Werkstücken für die Fahrzeugindustrie stellt sich das Problem, daß eine große Typenvielfalt von teilweise mehr als vierzig Teilen gegeben ist. Die genannten Werkstücke sollen mit dem für diese Aufgabe günstigen Ganzflächenverfahren be­ arbeitet werden. Dies bedeutet, für jeden Typ ist ein eigener Induktor einschließlich notwendiger Ersatzinduktoren erforderlich.In the heat treatment of cardan shafts, drive shafts and similar workpieces for the automotive industry Problem that a large variety of types, sometimes more than forty parts is given. The workpieces mentioned should with the whole-area process that is favorable for this task be working. This means that each type has its own Inductor including necessary replacement inductors required.

Abgesehen von den dadurch entstehenden Kosten ergibt sich die Schwierigkeit, daß derartige Maschinen des öfteren umgerüstet und anschließend die Werkstücke im Labor geschnitten werden müssen und zu prüfen sind. Der Ausfall an Produktionsstunden ist dadurch beträchtlich.Apart from the resulting costs, the Difficulty that such machines are often converted and then the workpieces are cut in the laboratory must and must be checked. The loss of production hours is therefore considerable.

Ein Induktor zum Oberflächenhärten von unterschiedlich langen Werkstücken mit zwei Spanneinrichtungen bei Induktions­ härtemaschinen, mit einer Teilung quer zur Werkstückachse, bei dem die geteilten Induktorhälften in der Werkstück­ achse stufenlos verschiebbar zueinander angeordnet sind, ist aus der GB-PS 12 11 471 bekannt. In dieser wird das Problem der unterschiedlichen Erwärmungs­ geschwindigkeit im Bereich der Kontaktstellen gegenüber den anderen Bereichen aufgezeigt.An inductor for surface hardening of different lengths Workpieces with two clamping devices for induction hardening machines, with a division transverse to the workpiece axis, where the split inductor halves in the workpiece axis are arranged continuously displaceable to each other, is known from GB-PS 12 11 471. In this becomes the problem of different warming speed in the area of the contact points compared to the other areas.

Aufgabe der Erfindung ist es, einen Induktor vorzuschlagen, durch den auch im Bereich der Kontaktstellen eine gleichbleibende Härtetiefe gewährleistet ist.The object of the invention is to propose an inductor, due to the constant in the area of the contact points Hardness depth is guaranteed.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.This object is solved by the features of claim 1.

Die Zeichnung erläutert eine Ausführungsform des erfin­ dungsgemäßen Induktors zum Oberflächenhärten von Werkstücken.The drawing illustrates an embodiment of the inventions inventive inductor for surface hardening of workpieces.

Fig. 1 zeigt den Induktor schematisch in perspektivi­ scher Sicht, während Fig. 1 shows the inductor schematically in perspective view, while

Fig. 2 einen Querschnitt durch den Induktor im Mittel­ bereich darstellt. Fig. 2 shows a cross section through the inductor in the central area.

Die Energiequelle 1 versorgt die feststehende Induktor­ hälfte 2 über die beiden Leiterzweige 2a, 2b. Mit dem Be­ zugszeichen 3 ist die Längsachse bzw. Werkstückachse be­ zeichnet. Die andere Induktorhälfte 4 ist verschiebbar ange­ ordnet und besitzt die Leiterzweige 4a, 4b. Der Kontakt zwischen feststehender und verschiebbarer Induktorhälfte 4 wird über die Kontaktstellen 6a, 6b bewirkt. Mit 5 ist der Kühlmittelanschluß für die bewegliche Induktorhälfte 4 be­ zeichnet, während die Kühlkanäle in den Leiterzweigen 2a, 2b und 4a, 4b mit 7 bezeichnet sind.The energy source 1 supplies the fixed inductor half 2 via the two conductor branches 2 a, 2 b. With the reference numeral 3 , the longitudinal axis or workpiece axis is characterized. The other inductor half 4 is slidably arranged and has the conductor branches 4 a, 4 b. The contact between the fixed and displaceable inductor half 4 is effected via the contact points 6 a, 6 b. With 5 , the coolant connection for the movable inductor half 4 is characterized, while the cooling channels in the conductor branches 2 a, 2 b and 4 a, 4 b are designated 7 .

Claims (2)

1. Induktor zum Oberflächenhärten von unterschiedlich langen Werkstücken mit zwei Spanneinrichtungen bei Induktions­ härtemaschinen, mit einer Teilung quer zur Werkstückachse, bei dem die geteilten Induktorhälften in der Werkstück­ achse stufenlos verschiebbar zueinander angeordnet sind, dadurch gekennzeichnet, daß
  • a) die Leiterzweige (2a, 2b, 4a, 4b) des Induktors zur Werkstückachse (3) diagonal gegenüberliegend
  • b) die Kontaktstellen (6a, 6b) zwischen den Leiterzweigen in Richtung der Werk­ stückachse (3) zu­ einander versetzt angeordnet sind und
  • c) der Induktor aus mit Kühlkanälen (7) versehenem Mas­ sivkupfer besteht.
1. inductor for surface hardening of workpieces of different lengths with two clamping devices in induction hardening machines, with a division transversely to the workpiece axis, in which the divided inductor halves in the workpiece axis are arranged continuously displaceable to one another, characterized in that
  • a) the conductor branches ( 2 a, 2 b, 4 a, 4 b) of the inductor to the workpiece axis ( 3 ) diagonally opposite
  • b) the contact points ( 6 a, 6 b) between the conductor branches in the direction of the workpiece axis ( 3 ) are arranged offset from one another and
  • c) the inductor consists of cooling channels ( 7 ) provided with solid copper.
2. Induktor nach Anspruch 1, dadurch gekennzeichnet, daß die Kontaktstellen (6a, 6b) in konstantem Abstand zum Energieanschluß (1) angeordnet sind.2. Inductor according to claim 1, characterized in that the contact points ( 6 a, 6 b) are arranged at a constant distance from the power connection ( 1 ).
DE3929145A 1989-09-02 1989-09-02 Solid copper inductor for surface hardening workpieces - is split into 2 halves with power supplied to both fixed and movable halves, and is equipped with cooling channels Expired - Lifetime DE3929145C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3929145A DE3929145C1 (en) 1989-09-02 1989-09-02 Solid copper inductor for surface hardening workpieces - is split into 2 halves with power supplied to both fixed and movable halves, and is equipped with cooling channels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3929145A DE3929145C1 (en) 1989-09-02 1989-09-02 Solid copper inductor for surface hardening workpieces - is split into 2 halves with power supplied to both fixed and movable halves, and is equipped with cooling channels

Publications (1)

Publication Number Publication Date
DE3929145C1 true DE3929145C1 (en) 1991-04-11

Family

ID=6388469

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3929145A Expired - Lifetime DE3929145C1 (en) 1989-09-02 1989-09-02 Solid copper inductor for surface hardening workpieces - is split into 2 halves with power supplied to both fixed and movable halves, and is equipped with cooling channels

Country Status (1)

Country Link
DE (1) DE3929145C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230897C1 (en) * 1992-09-01 1993-10-14 Aeg Elotherm Gmbh Inductor
DE10313166A1 (en) * 2003-03-25 2004-04-29 Daimlerchrysler Ag Leak detection method for the inductor of an induction hardening plant, whereby coolant input and outlet flow rates are measured and compared to determine if any leaks are occurring

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1583332B1 (en) * 1967-11-14 1970-03-26 Aeg Elotherm Gmbh Inductor for surface hardening of flange shafts of very different length according to the total surface circulation process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1583332B1 (en) * 1967-11-14 1970-03-26 Aeg Elotherm Gmbh Inductor for surface hardening of flange shafts of very different length according to the total surface circulation process
GB1211471A (en) * 1967-11-14 1970-11-04 Aeg Elotherm Gmbh An inductor for surface-hardening rotating shafts

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230897C1 (en) * 1992-09-01 1993-10-14 Aeg Elotherm Gmbh Inductor
EP0585542A1 (en) * 1992-09-01 1994-03-09 AEG-Elotherm GmbH Inductor
DE10313166A1 (en) * 2003-03-25 2004-04-29 Daimlerchrysler Ag Leak detection method for the inductor of an induction hardening plant, whereby coolant input and outlet flow rates are measured and compared to determine if any leaks are occurring

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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: RETTENMAIER, HORST, DR., 69434 HIRSCHHORN, DE

8339 Ceased/non-payment of the annual fee