WO2017174054A1 - Hardening machine - Google Patents

Hardening machine Download PDF

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Publication number
WO2017174054A1
WO2017174054A1 PCT/DE2017/000089 DE2017000089W WO2017174054A1 WO 2017174054 A1 WO2017174054 A1 WO 2017174054A1 DE 2017000089 W DE2017000089 W DE 2017000089W WO 2017174054 A1 WO2017174054 A1 WO 2017174054A1
Authority
WO
WIPO (PCT)
Prior art keywords
inductor
hardening
workpieces
machine
workpiece
Prior art date
Application number
PCT/DE2017/000089
Other languages
German (de)
French (fr)
Inventor
Thomas W. RANK
Original Assignee
EMAG GmbH & Co. KG
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 EMAG GmbH & Co. KG filed Critical EMAG GmbH & Co. KG
Publication of WO2017174054A1 publication Critical patent/WO2017174054A1/en

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
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
    • H05B6/102—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces the metal pieces being rotated while induction heated
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • 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
    • 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
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching
    • 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

Definitions

  • the invention relates to a hardening machine with a device for inductive hardening of workpieces according to the preamble of patent claim 1.
  • workpieces are heated by means of an inductor and then cooled.
  • EP 2 957 530 A1 is a rotary transfer machine for hardening journal for
  • Constant velocity joints known. At the journal several subareas are heated inductively for hardening and then cooled. For this purpose, a station for loading and unloading, three stations for heating and two stations for cooling are provided in the rotary table. Each station is assigned a gripper, with which the workpieces can be transported in cycles and rotated.
  • Fig. 1 shows a hardening machine in a schematic representation
  • Fig. 2 shows a workpiece 8 with two parts to be cured
  • Fig. 3 shows the engagement of the inductors on the workpiece
  • Fig. 1 shows a hardening machine 1 in a schematic representation.
  • the machine frame 2 is designed as a column with square cross-section and vertical walls.
  • Front wall 6 vertical Z-guides 4 are arranged for a vertical slide 3.
  • the vertical slide 3 extends with the X-guides 5 laterally beyond the working space 17 also.
  • the workpiece carrier 7 carries on its underside a center drive chuck 10 for gripping and clamping of workpieces 8
  • Mittenantriebsfutter 10 rotates about the axis of rotation 9. It grips the workpieces 8 in the receiving position 12, transports them to the working space 17 and places them after hardening in the storage position 13 again.
  • a first inductor 14 is fixedly mounted on the machine frame 2.
  • Fig. 2 shows as a workpiece to be hardened 8 A journals for
  • Constant velocity joints that are used, for example, in axle drives for cars.
  • the center drive chuck 10 is shown in section.
  • a cooling device with two spray nozzles 20 is arranged, which together with the
  • Mittenantriebsfutter 10 are movable.
  • the workpiece 8 is fixed with clamping jaws 19. It was lowered with its opening from above onto the first inductor 14 and then set in rotation. After heating the inner portion 21, the workpiece 8 is cooled.
  • a cooling medium exits from spray nozzles 20.
  • the outer portion 22 is heated by a second inductor 18 and also cooled with a cooling medium from the spray nozzles 20.
  • the second inductor 18 can be moved relative to the center drive chuck 10 in the direction of the double arrow 23 parallel to the axis of rotation 9.
  • the outer portion 22 can be heated during the advancement of the second inductor 18.
  • the first and second inductors 14, 18 can be delivered to the workpiece 8 from opposite sides and optionally simultaneously or sequentially act on the workpiece 8.
  • the spray nozzles 20 can be arranged in the interior of the center drive chuck 10.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (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 invention relates to a hardening machine (1) for inductively hardening workpieces (8), wherein the workpieces (8) are heated by means of an inductor and then cooled by means of a cooling device, comprising a machine frame (2), a workpiece carrier (7) for holding, transporting, and depositing the workpieces (8), and at least a first inductor (14) and a second inductor (18), wherein the first inductor (14) is arranged on the machine frame (2) in a stationary manner and the second inductor (18) can be moved together with the workpiece carrier (7).

Description

Härtemaschine  hardening machine
Die Erfindung betrifft eine Härtemaschine mit einer Einrichtung zum induktiven Härten von Werkstücken nach dem Oberbegriff des Patentanspruchs 1. In derartigen Härtemaschinen werden Werkstücke mittels eines Induktors aufgeheizt und anschließend abgekühlt. Aus der EP 2 957 530 A1 ist eine Rundtaktmaschine zum Härten von Achszapfen für  The invention relates to a hardening machine with a device for inductive hardening of workpieces according to the preamble of patent claim 1. In such hardening machines workpieces are heated by means of an inductor and then cooled. From EP 2 957 530 A1 is a rotary transfer machine for hardening journal for
Gleichlaufgelenke bekannt. An den Achszapfen werden mehrere Teilbereiche zum Härten induktiv erwärmt und anschließend abgekühlt. Dazu sind im Rundtisch eine Station zum Be- und Entladen, drei Stationen zum Erwärmen und zwei Stationen zum Abkühlen vorgesehen. Jeder Station ist ein Greifer zugeordnet, womit die Werkstücke taktweise weiter transportiert und in Rotation versetzt werden können. Constant velocity joints known. At the journal several subareas are heated inductively for hardening and then cooled. For this purpose, a station for loading and unloading, three stations for heating and two stations for cooling are provided in the rotary table. Each station is assigned a gripper, with which the workpieces can be transported in cycles and rotated.
Es ist die Aufgabe der vorliegenden Erfindung eine vereinfachte Härtemaschine aufzuzeigen. Diese Aufgabe wird gelöst mit einer Härtemaschine nach Patentanspruch 1. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche.  It is the object of the present invention to show a simplified hardening machine. This object is achieved with a hardening machine according to claim 1. Advantageous developments are the subject of the dependent claims.
Es zeigen: Show it:
Fig. 1 eine Härtemaschine in schematischer Darstellung  Fig. 1 shows a hardening machine in a schematic representation
Fig. 2 zeigt ein Werkstück 8 mit zwei zu härtenden Teilbereichen  Fig. 2 shows a workpiece 8 with two parts to be cured
Fig. 3 den Eingriff der Induktoren am Werkstück Fig. 1 zeigt eine Härtemaschine 1 in schematischer Darstellung. Das Maschinengestell 2 ist als Säule mit quadratischem Querschnitt und vertikalen Wänden ausgeführt. An der  Fig. 3 shows the engagement of the inductors on the workpiece Fig. 1 shows a hardening machine 1 in a schematic representation. The machine frame 2 is designed as a column with square cross-section and vertical walls. At the
Vorderwand 6 sind vertikale Z-Führungen 4 für einen Vertikalschlitten 3 angeordnet. Der numerisch gesteuerte Antrieb für die Bewegungen in Z-Richtung erfolgt über den Motor 15 und die Kugelrollspindel 16. Der Vertikalschlitten 3 erstreckt sich mit den X-Führungen 5 seitlich über den Arbeitsraum 17 hinaus. Somit kann der Werkstückträger 7 vom Motor 15' über die Kugelrollspindel 16' am Vertikalschlitten 3 entlang der X-Führungen 5 aus dem Arbeitsraum 17 heraus in eine Aufnahme- und Ablageposition 12, 13 oberhalb einer Front wall 6 vertical Z-guides 4 are arranged for a vertical slide 3. The numerically controlled drive for the movements in the Z direction via the motor 15 and the ball screw 16. The vertical slide 3 extends with the X-guides 5 laterally beyond the working space 17 also. Thus, the workpiece carrier 7 from the motor 15 'on the ball screw 16' on the vertical slide 3 along the X-guides 5 from the working space 17 out in a receiving and storage position 12, 13 above a
Transporteinrichtung 11 bewegt werden. Der Werkstückträger 7 trägt an seiner Unterseite ein Mittenantriebsfutter 10 zum Greifen und Spannen von Werkstücken 8. Das Transport device 11 are moved. The workpiece carrier 7 carries on its underside a center drive chuck 10 for gripping and clamping of workpieces 8
Mittenantriebsfutter 10 rotiert um die Rotationsachse 9. Es ergreift die Werkstücke 8 in der Aufnahmeposition 12, transportiert sie zum Arbeitsraum 17 und legt sie nach dem Härten in der Ablageposition 13 wieder ab. Ein erster Induktor 14 ist ortsfest am Maschinengestell 2 angebracht. Fig. 2 zeigt als ein zu härtendes Werkstück 8 einen Achszapfen für Mittenantriebsfutter 10 rotates about the axis of rotation 9. It grips the workpieces 8 in the receiving position 12, transports them to the working space 17 and places them after hardening in the storage position 13 again. A first inductor 14 is fixedly mounted on the machine frame 2. Fig. 2 shows as a workpiece to be hardened 8 A journals for
Gleichlaufgelenke, die beispielsweise in Achsantrieben für PKW eingesetzt werden. Am Werkstück 8 sind ein innerer Teilbereich 21 mit Kugellaufbahnen und ein äußerer Teilbereich 22 zu härten. In Fig. 3 ist das Mittenantriebsfutter 10 im Schnitt dargestellt. In seinem Innern ist eine Kühlvorrichtung mit zwei Sprühdüsen 20 angeordnet, welche zusammen mit dem Constant velocity joints that are used, for example, in axle drives for cars. On the workpiece 8, an inner portion 21 with ball races and an outer portion 22 to harden. In Fig. 3, the center drive chuck 10 is shown in section. In its interior, a cooling device with two spray nozzles 20 is arranged, which together with the
Mittenantriebsfutter 10 bewegbar sind. Das Werkstück 8 wird mit Spannbacken 19 fixiert. Es wurde mit seiner Öffnung von oben auf den ersten Induktor 14 abgesenkt und anschließend in Rotation versetzt. Nach dem Aufheizen des inneren Teilbereichs 21 wird das Werkstück 8 abgekühlt. Dazu tritt aus Sprühdüsen 20 ein Abkühlmedium aus. Zeitgleich oder wahlweise im Anschluss an den inneren Teilbereich 21 wird der äußere Teilbereich 22 von einem zweiten Induktor 18 erwärmt und ebenfalls mit einem Abkühlmedium aus den Sprühdüsen 20 abgekühlt. Der zweite Induktor 18 kann relativ zum Mittenantriebsfutter 10 in Richtung des Doppelpfeils 23 parallel zur Rotationsachse 9 bewegt werden. Somit kann der äußere Teilbereich 22 schon während des Vorschubs des zweiten Induktors 18 erwärmt werden. Durch die Aufnahme des Werkstücks 8 im Mittenantriebsfutter 10 können der erste und zweite Induktor 14, 18 dem Werkstück 8 von gegenüberliegenden Seiten zugestellt werden und wahlweise gleichzeitig oder nacheinander auf das Werkstück 8 einwirken. Vorteilhaft können auch die Sprühdüsen 20 im Innern des Mittenantriebsfutters 10 angeordnet werden. Mittenantriebsfutter 10 are movable. The workpiece 8 is fixed with clamping jaws 19. It was lowered with its opening from above onto the first inductor 14 and then set in rotation. After heating the inner portion 21, the workpiece 8 is cooled. For this purpose, a cooling medium exits from spray nozzles 20. At the same time or optionally following the inner portion 21, the outer portion 22 is heated by a second inductor 18 and also cooled with a cooling medium from the spray nozzles 20. The second inductor 18 can be moved relative to the center drive chuck 10 in the direction of the double arrow 23 parallel to the axis of rotation 9. Thus, the outer portion 22 can be heated during the advancement of the second inductor 18. By receiving the workpiece 8 in the center drive chuck 10, the first and second inductors 14, 18 can be delivered to the workpiece 8 from opposite sides and optionally simultaneously or sequentially act on the workpiece 8. Advantageously, the spray nozzles 20 can be arranged in the interior of the center drive chuck 10.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
1 Härtemaschine1 hardening machine
2 Maschinengestell2 machine frame
3 Vertikalschlitten3 vertical slides
4 Z-Führung 4 Z-guide
5 X-Führung  5 X-guide
6 Vorderwand 6 front wall
7 Werkstückträger7 workpiece carrier
8 Werkstück 8 workpiece
9 Rotationsachse 9 rotation axis
10 Mittenantriebsfutter10 center drive chuck
11 Transporteinrichtung11 transport device
12 Aufnahmeposition12 recording position
13 Ablageposition13 storage position
14 Erster Induktor14 First inductor
15 15' Motor 15 15 'engine
16 16' Kugelrollspindel 16 16 'ball screw
17 Arbeitsraum 17 workspace
18 Zweiter Induktor 18 Second inductor
19 Spannbacke19 clamping jaw
20 Sprühdüse 20 spray nozzle
21 Innerer Teilbereich 21 Inner section
22 Äußerer Teilbereich22 Outer section
23 Doppelpfeil 23 double-headed arrow

Claims

Patentansprüche claims
1. Härtemaschine (1 ) zum induktiven Härten von Werkstücken (8), wobei die 1. Hardening machine (1) for inductive hardening of workpieces (8), wherein the
Werkstücke (8) mittels eines Induktors aufgeheizt und anschließend mit einer  Workpieces (8) heated by means of an inductor and then with a
Kühlvorrichtung abgekühlt werden, mit einem Maschinengestell (2), mit einem  Cooling device to be cooled, with a machine frame (2), with a
Werkstückträger (7) zum Aufnehmen, Transportieren und Ablegen der Werkstücke (8) und mit mindestens einem ersten Induktor (14) und einem zweiten Induktor (18), dadurch gekennzeichnet, dass der erste Induktor (14) ortsfest am Maschinengestell (2) angeordnet ist und dass der zweite Induktor (18) zusammen mit dem  Workpiece carrier (7) for receiving, transporting and depositing the workpieces (8) and having at least a first inductor (14) and a second inductor (18), characterized in that the first inductor (14) is fixedly arranged on the machine frame (2) and that the second inductor (18) together with the
Werkstückträger (7) verfahrbar ist.  Workpiece carrier (7) is movable.
2. Härtemaschine (1 ) nach Patentanspruch 1 zum Härten von Werkstücken (8) mit 2. hardening machine (1) according to claim 1 for hardening of workpieces (8) with
inneren und äußeren Teilbereichen (21 , 22), dadurch gekennzeichnet, dass mit dem ersten Induktor (14) der innere Teilbereich (21 ) und mit dem zweiten Induktor (18) der äußere Teilbereich (22) beheizbar ist.  inner and outer portions (21, 22), characterized in that with the first inductor (14) of the inner portion (21) and the second inductor (18) of the outer portion (22) is heatable.
3. Härtemaschine (1 ) nach Patentanspruch 1 oder 2, dadurch gekennzeichnet, dass am Werkstückträger (7) ein Mittenantriebsfutter (10) angeordnet ist. 3. Hardening machine (1) according to claim 1 or 2, characterized in that on the workpiece carrier (7) a center drive chuck (10) is arranged.
4. Härtemaschine nach einem der Patentansprüche 1 bis 3, dadurch gekennzeichnet, dass der zweite Induktor (18) relativ zum Mittenantriebsfutter (10) in Richtung eines Doppelpfeils (23) bewegbar ist. 4. Hardening machine according to one of the claims 1 to 3, characterized in that the second inductor (18) relative to the center drive chuck (10) in the direction of a double arrow (23) is movable.
5. Härtemaschine (1 ) nach einem der Patentansprüche 1 bis 3, dadurch gekennzeichnet, dass der erste Induktor (14) und der zweite Induktor (18) dem Werkstück 8 von gegenüberliegenden Seiten zustellbar sind. 5. Hardening machine (1) according to one of the claims 1 to 3, characterized in that the first inductor (14) and the second inductor (18) are deliverable to the workpiece 8 from opposite sides.
6. Härtemaschine (1 ) nach einem der Patentansprüche 1 bis 4, wobei die 6. Hardening machine (1) according to one of the claims 1 to 4, wherein the
Kühleinrichtung mindestens eine Sprühdüse (20) aufweist, dadurch gekennzeichnet, dass die mindestens eine Sprühdüse (20) im Mittenantriebsfutter (10) angeordnet und zusammen mit diesem verfahrbar ist.  Cooling device has at least one spray nozzle (20), characterized in that the at least one spray nozzle (20) in the center drive chuck (10) is arranged and movable together with this.
PCT/DE2017/000089 2016-04-07 2017-04-05 Hardening machine WO2017174054A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016004177.1 2016-04-07
DE102016004177.3A DE102016004177B4 (en) 2016-04-07 2016-04-07 Hardening machine

Publications (1)

Publication Number Publication Date
WO2017174054A1 true WO2017174054A1 (en) 2017-10-12

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ID=59269722

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2017/000089 WO2017174054A1 (en) 2016-04-07 2017-04-05 Hardening machine

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WO (1) WO2017174054A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110904315A (en) * 2019-12-13 2020-03-24 慈溪市今日自动化科技有限公司 Automatic quenching equipment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09241751A (en) * 1996-03-04 1997-09-16 Aisin Aw Co Ltd Annular motive power transmitting body and heat treatment method thereof
US5702667A (en) * 1996-08-16 1997-12-30 Caterpillar Inc. Method and apparatus for heat treating a bushing
JP2004204262A (en) * 2002-12-24 2004-07-22 High Frequency Heattreat Co Ltd Induction heating device for cylindrical article
JP2012031465A (en) * 2010-07-29 2012-02-16 Fuji Electronics Industry Co Ltd High frequency heating device and high frequency heating method
JP2014025118A (en) * 2012-07-27 2014-02-06 Fuji Electric Co Ltd Induction heating apparatus
EP2957530A1 (en) 2014-06-17 2015-12-23 Saet S.p.A. Apparatus for induction heating of mechanical components

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2332832C2 (en) 1973-06-28 1975-08-28 Aeg-Elotherm Gmbh, 5630 Remscheid Device for inductive hardening of workpieces that can be rotated about an axis of rotation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09241751A (en) * 1996-03-04 1997-09-16 Aisin Aw Co Ltd Annular motive power transmitting body and heat treatment method thereof
US5702667A (en) * 1996-08-16 1997-12-30 Caterpillar Inc. Method and apparatus for heat treating a bushing
JP2004204262A (en) * 2002-12-24 2004-07-22 High Frequency Heattreat Co Ltd Induction heating device for cylindrical article
JP2012031465A (en) * 2010-07-29 2012-02-16 Fuji Electronics Industry Co Ltd High frequency heating device and high frequency heating method
JP2014025118A (en) * 2012-07-27 2014-02-06 Fuji Electric Co Ltd Induction heating apparatus
EP2957530A1 (en) 2014-06-17 2015-12-23 Saet S.p.A. Apparatus for induction heating of mechanical components

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DE102016004177A1 (en) 2017-10-12

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