DE102007014637A1 - Edge layers inductive heating device for e.g. track element of taper roller of taper roller bearing, has induction heads formed in extending manner, and movable concerning their radial distance to principal axis of workpiece - Google Patents
Edge layers inductive heating device for e.g. track element of taper roller of taper roller bearing, has induction heads formed in extending manner, and movable concerning their radial distance to principal axis of workpiece Download PDFInfo
- Publication number
- DE102007014637A1 DE102007014637A1 DE102007014637A DE102007014637A DE102007014637A1 DE 102007014637 A1 DE102007014637 A1 DE 102007014637A1 DE 102007014637 A DE102007014637 A DE 102007014637A DE 102007014637 A DE102007014637 A DE 102007014637A DE 102007014637 A1 DE102007014637 A1 DE 102007014637A1
- Authority
- DE
- Germany
- Prior art keywords
- workpiece
- induction
- heads
- induction heads
- taper roller
- 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.)
- Ceased
Links
Classifications
-
- 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
- H05B6/38—Coil arrangements specially adapted for fitting into hollow spaces of workpieces
-
- 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
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/64—Special methods of manufacture
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Erwärmen wenigstens von Randschichten eines ringförmigen Werkstücks.The The invention relates to a device for heating at least boundary layers an annular Workpiece.
Aus dem Stand der Technik sind Durchlaufhärteöfen bekannt, bei denen die insbesondere durchzuhärtenden Werkstücke, beispielsweise Wälzlagerringe den Ofen in einer Längsrichtung durchlaufen und dabei unter anderem in vorgegebener Art und Weise erwärmt werden. Ein dem Erwärmen nachfolgendes Abschrecken führt dann zum wunschgemäßen Harten.Out Continuous hardening furnaces are known in the prior art in which the especially through-hardening Workpieces, For example, rolling bearing rings the oven in a longitudinal direction go through it and, among other things in a predetermined manner heated become. A heating subsequent Quenching leads then to the desired hard.
Eine Aufgabe der Erfindung ist es, eine verbesserte Vorrichtung zum Erwärmen wenigstens von Randschichten eines ringförmigen Werksstücks zu schaffen.A The object of the invention is an improved device for heating at least of marginal layers of an annular workpiece to accomplish.
Die Aufgabe wird durch den Gegenstand des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen beschrieben.The The object is solved by the subject matter of claim 1. advantageous Embodiments are described in the subclaims.
Gemäß Anspruch 1 beinhaltet eine Vorrichtung zum Erwärmen wenigstens von Randschichten eines ringförmigen Werkstücks folgende Merkmale:
- – Rotationsmittel, mit denen das Werkstück um seine Hauptachse in Rotation versetzbar ist,
- – wenigstens ein innerer Induktionskopf zum innenmantelseitigen Erwärmen des Werkstücks,
- – wenigstens ein äußerer Induktionskopf zum außenmantelseitigen Erwärmen des Werkstücks und
- – die Induktionsköpfe sind frei von einem Hintergreifen des Werkstücks sich erstreckend ausgebildet und wenigstens bezüglich ihres radialen Abstands zueinander und bezüglich ihrer radialen Abstände zur Hauptachse des Werkstücks verstellbar.
- Rotation means for rotating the workpiece about its major axis,
- At least one inner induction head for heating the inner shell side of the workpiece,
- - At least an outer induction head for outer shell side heating of the workpiece and
- - The induction heads are formed free of a rear engagement of the workpiece extending and adjustable at least with respect to their radial distance from one another and with respect to their radial distances from the main axis of the workpiece.
Die Erfindung beruht dabei auf der Erkenntnis, dass bei dem eingangs beschriebenen Durchlaufofen, wenn nach einer ersten Charge von Werkstücken mit einer ersten Dimensionierung eine zweite Charge von Werkstücken mit einer zweiten, von der ersten unterschiedlichen Dimensionierung gehärtet werden soll, zunächst der Durchlaufofen nach der ersten Charge leer gefahren werden muss, bevor ihn die zweite Charge passieren kann. Besagtes Leerfahren ist dabei unter anderem deswegen notwendig, weil durch die unterschiedliche Dimensionierung andere Erwärmungszeitdauern und/oder gegebenenfalls andere Temperaturen einzustellen sind. Nachteilig dabei ist insbesondere das zeitaufwendige Leerfahren des Ofens, was mit einer entsprechenden negativen Kostenposition einhergeht.The Invention is based on the finding that in the beginning described continuous furnace, if after a first batch of workpieces with a first dimensioning a second batch of workpieces with a second, from the first different sizing hardened should be, first the continuous furnace has to be emptied after the first batch, before he can pass the second batch. Said empty running is among other things necessary because of the different Dimensioning other heating time periods and / or optionally other temperatures are set. adversely especially the time-consuming emptying of the furnace, which is associated with a corresponding negative cost position.
Mit der erfindungsgemäßen Vorrichtung werden vorgenannte Nachteile mit Vorteil vermieden. Selbst wenn jedes aufeinanderfolgende Werkstück unterschiedlich dimensioniert ist, entstehen zwischen den einzelnen Werkstücken keine Wartezeiten, da lediglich die besagten Abstände zwischen den Indukti onsköpfen und der Werkstückhauptachse entsprechend einzustellen sind, was aber schnell und einfach durchführbar ist. Rüstzeiten, wie bei dem eingangs beschriebenen Durchlaufofen, gibt es somit nicht. Damit ist die erfindungsgemäße Vorrichtung besonders wirtschaftlich bei kleinen Losgrößen, angefangen von eins bis mehreren hundert Stück. Ferner wird in einer Ausführungsform mit Vorteil auch nicht durchgehärtet, sondern es werden nur die Randschichten einhergehend mit einem entsprechenden Erwärmen gehärtet, so dass neben einer zeitlich kürzeren Härtedauer gegenüber dem Durchhärten auch eine hohe Zähigkeit des Werkstückkerns erhalten bleibt.With the device according to the invention The aforementioned disadvantages are advantageously avoided. Even if each successive workpiece different dimensioned, arise between the individual workpieces no Waiting times, since only the said distances between the induction onsköpfen and the workpiece main axis are set accordingly, but this is quick and easy to carry out. up times, as in the continuous furnace described above, there is thus not. Thus, the device according to the invention is special Economical for small batches, started from one to several hundred pieces. Further, in one embodiment with advantage not hardened, but only the marginal layers are accompanied by a corresponding one Heat hardened, so that in addition to a shorter time curing time across from through hardening also a high tenacity of the workpiece core remains.
Dadurch, dass der innere und der äußere Induktionskopf frei von einem Hintergreifen des Werkstücks sich erstreckend ausgebildet sind, und insbesondere der innere Induktionskopf sich im wesentlichen innerhalb eines vom Innenmantel des Werkstücks aufgespannten Bereichs und der äußere Induktionskopf sich im wesentlichen radial außerhalb eines vom Außenmantel des Werkstücks aufgespannten Bereichs erstreckend ausgebildet sind, ist mit besonderem Vorteil ein Einlegen der ringförmigen bzw. hohlzylinderartigen Werkstücke wie auch ein Entnehmen aus der Vorrichtung problemlos und ohne Behinderung möglich. Auch eine Abstandseinstellung zwischen den beiden Induktionsköpfen, beispielsweise zum Erwärmen von ringförmigen bzw. hohlzylinderartigen Werkstücken unterschiedlicher Dicke, ist dabei einfach durchführbar.Thereby, that the inner and the outer induction head formed free from a rearward engagement of the workpiece extending are, and in particular the inner induction head is substantially within a region defined by the inner shell of the workpiece and the outer induction head essentially radially outside one from the outer jacket of the workpiece spanned area are formed extending, is with particular Advantage of inserting the annular or hollow cylinder-like workpieces as well as a removal from the device easily and without obstruction possible. Also a distance adjustment between the two induction heads, for example for heating of annular or hollow cylinder-like workpieces different thickness, is easy to carry out.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus dem im folgenden beschriebenen Ausführungsbeispiel der Erfindung anhand der Figuren. Dabei zeigen:Further Advantages, features and details of the invention will become apparent the embodiment of the invention described below the figures. Showing:
Die
Weiterhin
umfasst die Vorrichtung in den in der
Die
einzelnen Induktionsköpfe
Dabei
ist die Vorrichtung derart ausgebildet, dass die Induktionsköpfe
Insbesondere
zur Steuerung bzw. Regelung der Positionen der einzelnen Induktionsköpfe
Um
den Kegelrollenlagerring
Weiterhin
ist das Positioniersystem der Vorrichtung derart ausgebildet, dass
eine einmal aufgefundene Positionierung der Induktionsköpfe
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007014637A DE102007014637A1 (en) | 2007-03-23 | 2007-03-23 | Edge layers inductive heating device for e.g. track element of taper roller of taper roller bearing, has induction heads formed in extending manner, and movable concerning their radial distance to principal axis of workpiece |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007014637A DE102007014637A1 (en) | 2007-03-23 | 2007-03-23 | Edge layers inductive heating device for e.g. track element of taper roller of taper roller bearing, has induction heads formed in extending manner, and movable concerning their radial distance to principal axis of workpiece |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007014637A1 true DE102007014637A1 (en) | 2008-10-02 |
Family
ID=39719366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007014637A Ceased DE102007014637A1 (en) | 2007-03-23 | 2007-03-23 | Edge layers inductive heating device for e.g. track element of taper roller of taper roller bearing, has induction heads formed in extending manner, and movable concerning their radial distance to principal axis of workpiece |
Country Status (1)
Country | Link |
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DE (1) | DE102007014637A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009112247A1 (en) * | 2008-03-14 | 2009-09-17 | Ab Skf | Device for heating and method for heating |
WO2010120836A1 (en) * | 2009-04-16 | 2010-10-21 | Us Synthetic Corporation | Brazing method and apparatus therefor using induction heating |
WO2011006514A1 (en) * | 2009-07-15 | 2011-01-20 | Skf B.V. | Modular induction heater system |
DE102009053197A1 (en) * | 2009-11-06 | 2011-05-12 | Imo Holding Gmbh | Method and device for inductive hardening of large annular workpieces |
EP2495466A1 (en) | 2011-12-22 | 2012-09-05 | IMO Holding GmbH | Roller bearing assembly with inclined hardening zones |
DE102011122145A1 (en) | 2011-12-22 | 2013-06-27 | Imo Holding Gmbh | Rolling element assembly useful for rotational connection with ball-rolling element raceway system, comprises overlap region at initial- and end region of hardened rolling body raceway, where overlap region has region of lesser hardness |
DE102012003384A1 (en) | 2012-02-01 | 2013-08-01 | Imo Holding Gmbh | Thermally treating metal ring with improved heat input using porous burner having porous structure, comprises thermally treating surface of metal ring for curing rolling element raceway, where treated surface exhibits hardness slippage area |
CN104372139A (en) * | 2013-08-13 | 2015-02-25 | 上海重型机器厂有限公司 | Method for carrying out induction quenching on surface of cone with large conicity and long generatrix |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1583324A1 (en) * | 1967-08-29 | 1970-08-06 | Aeg Elotherm Gmbh | Inductor for heating a surface layer on the inner wall of cylinders |
DE3125450A1 (en) * | 1980-07-07 | 1982-03-18 | Halliburton Co., 73533 Duncan, Okla. | METHOD FOR HEAT TREATING METALS |
JPH05320742A (en) * | 1992-05-19 | 1993-12-03 | Komatsu Ltd | Two-step induction heat treatment of cylindrical parts |
US20030121951A1 (en) * | 2001-12-28 | 2003-07-03 | Hitoshi Suzuki | Method and apparatus for manufacturing cylindrical member |
DE102005006701B3 (en) * | 2005-02-15 | 2006-03-30 | Rothe Erde Gmbh | Production of bearing ring for large rolling bearing comprises arranging inductors over common zone of annular track to be hardened, heating the opposite-lying edge layer to the hardening temperature and further processing |
-
2007
- 2007-03-23 DE DE102007014637A patent/DE102007014637A1/en not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1583324A1 (en) * | 1967-08-29 | 1970-08-06 | Aeg Elotherm Gmbh | Inductor for heating a surface layer on the inner wall of cylinders |
DE3125450A1 (en) * | 1980-07-07 | 1982-03-18 | Halliburton Co., 73533 Duncan, Okla. | METHOD FOR HEAT TREATING METALS |
JPH05320742A (en) * | 1992-05-19 | 1993-12-03 | Komatsu Ltd | Two-step induction heat treatment of cylindrical parts |
US20030121951A1 (en) * | 2001-12-28 | 2003-07-03 | Hitoshi Suzuki | Method and apparatus for manufacturing cylindrical member |
DE102005006701B3 (en) * | 2005-02-15 | 2006-03-30 | Rothe Erde Gmbh | Production of bearing ring for large rolling bearing comprises arranging inductors over common zone of annular track to be hardened, heating the opposite-lying edge layer to the hardening temperature and further processing |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009112247A1 (en) * | 2008-03-14 | 2009-09-17 | Ab Skf | Device for heating and method for heating |
US8829399B2 (en) | 2008-03-14 | 2014-09-09 | Aktiebolaget Skf | Device for heating and method for heating |
CN102458744B (en) * | 2009-04-16 | 2014-07-16 | 美国合成公司 | Brazing method and apparatus therefor using induction heating |
WO2010120836A1 (en) * | 2009-04-16 | 2010-10-21 | Us Synthetic Corporation | Brazing method and apparatus therefor using induction heating |
US11845137B2 (en) | 2009-04-16 | 2023-12-19 | Us Synthetic Corporation | Apparatuses and methods for induction heating |
CN102458744A (en) * | 2009-04-16 | 2012-05-16 | 美国合成公司 | Brazing method and apparatus therefor using induction heating |
US10543548B2 (en) | 2009-04-16 | 2020-01-28 | Us Synthetic Corporation | Apparatuses and methods for induction heating |
WO2011006514A1 (en) * | 2009-07-15 | 2011-01-20 | Skf B.V. | Modular induction heater system |
CN102474921A (en) * | 2009-07-15 | 2012-05-23 | Skf私人有限公司 | Modular induction heater system |
WO2011054540A3 (en) * | 2009-11-06 | 2011-10-20 | Imo Holding Gmbh | Process and apparatus for inductively hardening large annular workpieces |
DE102009053197A1 (en) * | 2009-11-06 | 2011-05-12 | Imo Holding Gmbh | Method and device for inductive hardening of large annular workpieces |
DE102011122145A1 (en) | 2011-12-22 | 2013-06-27 | Imo Holding Gmbh | Rolling element assembly useful for rotational connection with ball-rolling element raceway system, comprises overlap region at initial- and end region of hardened rolling body raceway, where overlap region has region of lesser hardness |
WO2013093609A1 (en) | 2011-12-22 | 2013-06-27 | Imo Holding Gmbh | Rolling bearing arrangement with inclined hardness zones |
US9303691B2 (en) | 2011-12-22 | 2016-04-05 | Imo Holding Gmbh | Rolling bearing arrangement with inclined hardness zones |
EP2495466A1 (en) | 2011-12-22 | 2012-09-05 | IMO Holding GmbH | Roller bearing assembly with inclined hardening zones |
DE102012003384A1 (en) | 2012-02-01 | 2013-08-01 | Imo Holding Gmbh | Thermally treating metal ring with improved heat input using porous burner having porous structure, comprises thermally treating surface of metal ring for curing rolling element raceway, where treated surface exhibits hardness slippage area |
CN104372139A (en) * | 2013-08-13 | 2015-02-25 | 上海重型机器厂有限公司 | Method for carrying out induction quenching on surface of cone with large conicity and long generatrix |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection | ||
8170 | Reinstatement of the former position | ||
R011 | All appeals rejected, refused or otherwise settled | ||
R003 | Refusal decision now final |
Effective date: 20140324 |