WO2017221789A1 - Appareil et procédé de chauffage par induction - Google Patents

Appareil et procédé de chauffage par induction Download PDF

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Publication number
WO2017221789A1
WO2017221789A1 PCT/JP2017/021990 JP2017021990W WO2017221789A1 WO 2017221789 A1 WO2017221789 A1 WO 2017221789A1 JP 2017021990 W JP2017021990 W JP 2017021990W WO 2017221789 A1 WO2017221789 A1 WO 2017221789A1
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WO
WIPO (PCT)
Prior art keywords
shaft member
workpiece
induction heating
shaft
conveyance path
Prior art date
Application number
PCT/JP2017/021990
Other languages
English (en)
Japanese (ja)
Inventor
慎太郎 鈴木
義也 真野
勇輝 田渕
Original Assignee
Ntn株式会社
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
Priority claimed from JP2017097280A external-priority patent/JP2018006327A/ja
Application filed by Ntn株式会社 filed Critical Ntn株式会社
Priority to CN201780038479.XA priority Critical patent/CN109312420A/zh
Priority to EP17815258.3A priority patent/EP3476956A4/fr
Priority to US16/312,344 priority patent/US20190239291A1/en
Publication of WO2017221789A1 publication Critical patent/WO2017221789A1/fr

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    • 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
    • C21D9/36—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for balls; for rollers
    • 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
    • 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 present invention relates to an induction heating device and an induction heating method used when induction heating a work.
  • a heat treatment for imparting the mechanical strength required for the workpiece (A quench hardening process is performed.
  • This heat treatment includes a heating step for heating the workpiece to be heat-treated to a target temperature, a cooling step for cooling the heated workpiece, and the like.
  • the heating process can be performed using, for example, an atmosphere heating furnace such as a mesh belt type continuous furnace.
  • an atmosphere heating furnace such as a mesh belt type continuous furnace.
  • the atmosphere heating furnace needs to be heated together with the atmosphere, the energy efficiency is low. There is a problem of becoming.
  • the above heating process may be performed using a high frequency induction heating apparatus.
  • Inductive heating has the advantage that a compact heat treatment facility can be realized in addition to achieving high energy efficiency because only the workpiece can be directly heated.
  • the induction heating device of Patent Document 1 is a guide tube as a guide member that guides and moves a work, a heating coil that is arranged on the outer periphery of the guide tube and induction-heats the work that moves in the guide tube, and an inlet side of the guide tube.
  • pushing means for sequentially pushing the workpiece into the guide tube. In this case, a feeding force is applied to the workpiece in the guide tube as the subsequent workpiece is pushed into the guide tube.
  • an object of the present invention is to provide a technical means capable of uniformly inductively heating a workpiece (particularly a rotatable workpiece) without temperature unevenness, and thereby appropriately and efficiently bringing the workpiece to a target temperature. It is to enable heating.
  • the present invention devised to achieve the above-described object includes a conveyance device that conveys a rotatable workpiece along a linear guide conveyance path, and induction heating of the workpiece conveyed along the guide conveyance path.
  • An induction heating device comprising a heating coil, wherein the conveying device is arranged in parallel and spaced apart from each other, and a first shaft member and a second shaft member that form a guided conveying path in cooperation with the other side
  • a screw shaft having a helical convex portion provided along the outer periphery of at least one of the shaft members.
  • the guide conveyance path is formed by a groove bottom surface of the spiral groove defined on the one shaft member by the convex portion and a surface facing the groove bottom surface of the other shaft member.
  • examples of the “rotatable workpiece” in the present invention include a rolling element of a rolling bearing.
  • the rolling bearing here is a concept including a ball bearing, a cylindrical roller bearing, a tapered roller bearing, a needle roller bearing and the like. Therefore, the rolling element is a concept including a ball, a cylindrical roller, a tapered roller, a needle roller, and the like.
  • the workpiece to be heated is introduced into the guide conveyance path provided in the conveyance apparatus, and then conveyed along the guide conveyance path.
  • the guide conveyance path includes a groove bottom surface of a spiral groove defined on at least one shaft member (screw shaft) of the first shaft member and the second shaft member arranged in parallel and spaced apart from each other; Since the shaft member is formed by the surface facing the groove bottom surface, the workpiece to be heated is disposed in the spiral groove, and a part thereof contacts the groove bottom surface of the spiral groove.
  • the spiral groove is partitioned and formed by the spiral convex portion, when the screw shaft is driven to rotate around its axis while the workpiece is placed in the spiral groove (on the guide conveyance path), the workpiece is Can be applied simultaneously and continuously with a feed force for conveying the roller along the guide conveyance path and a rotational force for rotating the same (specifically, a rotational force in the direction opposite to the rotational direction of the screw shaft). it can. Therefore, induction heating can be performed while rotating the workpiece conveyed along the guide conveyance path. As a result, the workpiece can be induction-heated efficiently and uniformly without temperature unevenness.
  • Patent Document 1 when induction heating is performed in a state where each workpiece is in contact with an adjacent workpiece in the conveyance direction, the workpieces are welded together, and the workpiece after heating may not be used as a product. There is sex. Further, even if the workpieces are not welded to each other, the workpieces are affected by the thermal effects of adjacent workpieces, and therefore, the workpieces may not be heated in a predetermined manner. For this reason, when conveying a some workpiece
  • the guide conveyance path is formed by the groove bottom surface of the spiral groove, and therefore the pitch of the convex portion (the dimension in the direction along the guide conveyance path of the groove bottom surface of the spiral groove) is appropriately set. If it is set to, two adjacent workpieces can be reliably conveyed in a state of being separated from each other. Therefore, also from this point, the workpiece can be heated with high accuracy.
  • the other shaft member can be configured by a screw shaft similar to the one shaft member, or can be configured by a cylindrical shaft having a constant diameter. If the other shaft member is constituted by a cylindrical shaft, the shape of the other shaft member can be simplified and the production cost thereof can be suppressed, so that the induction heating device capable of achieving the above-described effects can be realized at low cost. Can do.
  • the guide conveyance path is formed by the groove bottom surface of the spiral groove and the outer diameter surface of the cylindrical shaft.
  • the axis of the first shaft member and the axis of the second shaft member are positioned at the same height (on the same plane), it is possible to effectively reduce the possibility of the workpiece falling off from the guide conveyance path.
  • the rotation mechanism can be configured to rotate the first shaft member and the second shaft member in the same direction at the same speed. If it does in this way, the work conveyed along a guidance conveyance way can be rotated smoothly.
  • one shaft member (screw shaft) may be disposed relatively upward and the other shaft member may be disposed relatively below.
  • the guide conveyance path can be formed by the groove bottom surface of the spiral groove and the work support surface provided on the other shaft member.
  • the first shaft member and the second shaft member are preferably formed of a nonmagnetic material. If both shaft members are made of a magnetic material such as metal, not only the workpiece but also the shaft member is induction-heated. Therefore, the shaft member softens and melts, and the shape accuracy of the shaft member and thus the workpiece support and transport accuracy are improved. This is because it has an adverse effect.
  • the heat treatment equipment includes the induction heating device according to the present invention having the above-described configuration and a cooling device that cools the workpiece discharged from the induction heating device (the workpiece after heating is completed), the workpiece is appropriately quenched and hardened. It is possible to easily and surely obtain a workpiece having a desired mechanical strength after being subjected to the treatment.
  • the above object is achieved by the induction heating method according to the present invention, that is, by energizing the heating coil arranged outside the guide conveyance path while conveying the rotatable workpiece along the linear guide conveyance path.
  • the work when the work is induction-heated to a target temperature, the work can be also achieved by an induction heating method characterized in that each work introduced sequentially to the guide conveyance path is conveyed while being rotated.
  • each of the workpieces sequentially introduced into the guide conveyance path is conveyed while being rotated in a non-contact state with an adjacent workpiece.
  • the workpiece to be heated can be uniformly induction-heated without temperature unevenness. Thereby, it becomes possible to induction-heat each of a some workpiece
  • FIG. 5B is a schematic sectional view taken along line BB in FIG. 5A.
  • FIG. 10 is a partially enlarged plan view of the transfer device, showing a case where the posture of the workpiece to be transferred is changed.
  • FIG. 6B is a schematic sectional view taken along line BB in FIG. 6A. It is the schematic which shows an example of the support aspect of the 1st shaft member and 2nd shaft member which comprise a conveying apparatus. It is a principal part cross-sectional view of the conveying apparatus which concerns on other embodiment of this invention.
  • FIG. 1 is a schematic view showing the overall structure of a heat treatment facility A provided with an induction heating apparatus 1 according to an embodiment of the present invention
  • FIG. 2 is a schematic side view of the induction heating apparatus 1
  • FIG. FIG. 2 is a schematic front view of FIG.
  • the heat treatment equipment A shown in FIG. 1 is used for subjecting a conductive metal workpiece W to a quench hardening treatment, and aims at conveying the workpiece W along a linear guide conveyance path P. It is configured to inductively heat to a temperature and then cool the workpiece W.
  • the workpiece W of the present embodiment is a tapered roller (a base material for a tapered roller) as shown in FIGS. 4, 5A, 5B and the like.
  • the heat treatment facility A includes an induction heating device 1 that performs induction heating to a target temperature while conveying the workpiece W along a linear guide conveyance path P, and the workpiece W discharged from the induction heating device 1.
  • a cooling unit 23 as a cooling device for cooling the.
  • the cooling unit 23 is configured by a cooling liquid tank in which a cooling liquid such as quenching oil is stored, for example.
  • the induction heating device 1 includes a transport device 10 that transports a workpiece W along a linear guide transport path P, and a work W that is transported along the guide transport path P.
  • Control the heating coil 2 for induction heating the frame 3 that supports the heating coil 2 and a part of the conveying device 10, the high-frequency power source 20 that supplies a high-frequency current to the heating coil 2, and the output of the high-frequency power source 20.
  • the frame body 3 of the present embodiment includes first to third base frames 3a to 3c that are erected at three positions spaced apart in the axial direction, and extend in the axial direction, with one end and the other end being the second base frame 3b. And a horizontal bar 3d fixed to the third base frame 3c.
  • the cross rails 3d are equally arranged at three locations spaced apart in the circumferential direction of the heating coil 2.
  • the heating coil 2 is a spiral coil (multi-winding coil) in which a tubular body (for example, a copper tube) made of a conductive metal is spirally wound, and is supported by a horizontal beam 3d of the frame 3 via a bolt member 4.
  • a coil whose full length is sufficiently longer than the full length of the workpiece W is used so that a plurality of workpieces W can be induction-heated simultaneously.
  • a heating coil 2 having a total length of 600 mm or more can be used.
  • One end and the other end of the heating coil 2 are electrically connected to the high-frequency power source 20 shown in FIG.
  • the high frequency power supply 20 is electrically connected to the control device 21 shown in FIG. 1, and supplies a high frequency current to the heating coil 2 with a predetermined size and timing based on a signal output from the control device 21. To do.
  • the induction heating device 1 can be provided with a cooling circuit for cooling the heating coil 2. If such a cooling circuit is provided, the temperature of the heating coil 2 can be controlled appropriately and efficiently, so that the workpiece W can be induction-heated to the target temperature with high accuracy and efficiency. Since the heating coil 2 is formed of a tubular body, the cooling circuit, for example, connects the heating coil 2 (hollow part thereof) and a cooling liquid tank storing the cooling liquid via a pipe, and on the pipe. It can be constructed by providing a pump.
  • the conveying device 10 includes a first shaft member 11 and a second shaft member 12 which are arranged in parallel to each other on the inner periphery of the heating coil 2, and both shaft members 11, And a rotation mechanism 6 that rotates at least one of the two (both in the present embodiment; details will be described later) around its axis.
  • the shaft members 11 and 12 are rotatably supported with respect to the frame body 3 with their axis lines (rotation centers) positioned at the same height (on the same plane). Both shaft members 11, 12 are longer than the heating coil 2, and one end and the other end protrude outside the heating coil 2.
  • the first shaft member 11 is formed of a cylindrical shaft having an outer diameter surface 11a formed on a cylindrical surface having a constant diameter
  • the second shaft member 12 is formed in a spiral shape along the outer periphery thereof. It consists of a screw shaft provided with a convex portion 13.
  • the first and second shaft members 11 and 12 are both made of a nonmagnetic material.
  • the nonmagnetic material for example, ceramics (for example, alumina, zirconia, silicon carbide, etc.) having high hardness and excellent heat resistance are preferably used.
  • the groove bottom surface 15 of the spiral groove 14 defined on the outer periphery of the second shaft member 12 by the spiral convex portion 13 is the first shaft member 11 facing this.
  • a guide conveyance path P for guiding and conveying the workpiece W and the workpiece support 16 are formed.
  • the outer peripheral surface of the workpiece W is contact-supported by the workpiece support unit 16.
  • the pitch and width dimension of the convex portion 13 are set so that the relational expression of Y ⁇ X1 is established between the groove width X1 of the spiral groove 14 and the overall length Y of the workpiece W.
  • the linear guide transport path P is formed by the cooperation of the first shaft member 11 and the second shaft member 12, and each of them can support and support the work W. 16 are formed at a plurality of locations separated in the extending direction of the guide conveyance path P.
  • the rotation mechanism 6 includes an electric motor (for example, a servo motor) 22 and a power transmission mechanism 7 that transmits the rotational power of the electric motor 22 to both shaft members 11 and 12.
  • the power transmission mechanism 7 has a small gear 7 a, a gear shaft 18 A connected to one end of the first shaft member 11 via a connection pin 17, and a small gear 7 b, and a second through the connection pin 17.
  • the pitches of the tooth surfaces of the small gears 7a and 7b are the same, and among the large gear 7c, the pitch of the tooth surfaces meshing with the small gear 7a and the pitch of the tooth surfaces meshing with the small gear 7b are the same.
  • the electric motor 22 When the electric motor 22 is driven by the power transmission mechanism 7 (rotation mechanism 6) having the above configuration, the first shaft member 11 and the second shaft member 12 are rotationally driven in the same direction at the same speed.
  • the electric motor 22 is electrically connected to a power supply (not shown) and the control device 21 shown in FIG. 1, and is driven to rotate at a predetermined speed based on a signal output from the control device 21.
  • the quench hardening treatment for the workpiece W is performed in the following manner.
  • the first shaft member 11 and the second shaft member 12 are driven to rotate around the axis (see the white arrow in FIG. 4), and the heating coil 2 is energized together. .
  • the workpiece W is loaded into the transport apparatus 10 from the workpiece loading position shown in FIG.
  • the work support portion 16 (and the guide conveyance path P) is formed by the groove bottom surface 15 of the spiral groove 14 defined in the second shaft member 12 formed of a screw shaft. While the motor 22) is driven and the shaft members 11 and 12 are rotating around the axis, the workpiece W supported by the workpiece support 16 is conveyed along the guide conveyance path P. The feed force is continuously applied.
  • the workpiece W is induction-heated to a target temperature by the energized heating coil 2 while being conveyed along the guide conveyance path P (guide movement along the outer diameter surface 11a of the first shaft member 11).
  • the workpiece W discharged from the heating coil 2 is charged into the coolant stored in the cooling unit 23 by free fall, and cooled to a predetermined temperature range and hardened by hardening.
  • the rotation mechanism 6 is configured to rotationally drive the first and second shaft members 11 and 12 in the same direction at the same speed, so that the work supported by the work support unit 16 is supported. W can be rotated smoothly and continuously around its axis.
  • both shaft members 11 and 12 are formed of ceramics, which is a kind of nonmagnetic material, both shaft members 11 and 12 themselves are prevented from being heated by induction and softened, melted, etc. It can be supported and transported with high accuracy. Accordingly, it is possible to further effectively prevent the temperature W from being uneven in the workpiece W after the heating is completed, and to further increase the heating accuracy of the workpiece W.
  • a plurality of workpieces W are transported in a state of being separated from each other by feeding the workpieces W one by one with a predetermined interval from the workpiece loading position shown in FIG.
  • a plurality of workpieces W are simultaneously induction-heated.
  • it is possible to prevent as much as possible problems such as the workpieces W being transported (during induction heating) contacting each other and welding the workpieces W, and each workpiece W being affected by the heat of adjacent workpieces W.
  • the workpiece W can be heated with higher accuracy.
  • each workpiece support section 16 has a single workpiece W. Only the contact will be supported. In this case, since the plurality of workpieces W can be reliably transported and heated in a state of being separated from each other, the possibility that each workpiece W is affected by the heat of the adjacent workpieces W can be further effectively reduced. .
  • the induction heating device 2 provided with the transfer device 10 has excellent versatility that can be preferably applied even when the workpiece W to be heated is one or several small lots. Each workpiece W can be heated with high accuracy.
  • the work support portion 16 contacts and supports the outer peripheral surface of the work W, and the work W is conveyed along its axial direction.
  • the support mode of the workpiece W by the support portion 16 is not limited to this.
  • the workpiece W is in contact with and supported on one end surface by the groove bottom surface 15 of the spiral groove 14 of the second shaft member 12, and the outer peripheral surface of the workpiece W of the first shaft member 11.
  • the outer diameter surface 11a may be contact-supported.
  • the workpiece W is transported along the guide transport path P in a state where the axis of the work W intersects (orthogonally) the extending direction of the guide transport path P.
  • the outer peripheral surface of the work W when the outer peripheral surface of the work W is contact-supported by the work support portion 16, the outer peripheral surface of the work W is the outer diameter surface 11 a of the first shaft member 11 and the second shaft member 12. It is conveyed by rolling contact while sliding with respect to the groove bottom surface 15.
  • the outer periphery of the workpiece W when supporting and transporting the workpiece W in the mode shown in FIGS. 6A and 6B, the outer periphery of the workpiece W is the outer diameter surface 11a of the first shaft member 11 and the spiral of the second shaft member 12.
  • the convex portion 13 is conveyed while being in rolling contact with no slip.
  • the workpiece W is a tapered roller (base material) or a cylindrical roller (base material) as in this embodiment, the workpiece W is formed in the manner shown in FIGS. 6A and 6B. It is preferable to support and convey. This is because the outer peripheral surface of the tapered roller or cylindrical roller is a surface that rolls along the raceway surfaces of the inner ring and outer ring that constitute the rolling bearing, and is a surface that requires high shape accuracy and mechanical strength.
  • a support member (support roller) 19 that contacts and supports a region other than the region where the workpiece support 16 is formed may be provided. If such a support roller 19 is provided, it is possible to prevent the shaft members 11 and 12 from being bent as much as possible, so that the workpiece W can be supported and transported with high accuracy. W can be heated with high accuracy.
  • the support roller 19 can be provided in the 2nd and 3rd base frames 3b and 3c.
  • the rotational speeds around the axis of the shaft members 11 and 12 are not necessarily the same, and may be different from each other. I do not care.
  • the pitch of the tooth surfaces of the small gear 7a provided on the first shaft member 11 and the large gear 7c meshing with the small gear 7a, and the second shaft member 12 What is necessary is just to make the pitch of the tooth surface of the small gear 7b and the large gear 7c which meshes with this mutually differ.
  • a rotating mechanism 6 having a configuration different from that of the rotating mechanism 6 described above may be employed.
  • a rotational force is also applied to the workpiece W by rotating only the shaft member (the second shaft member 12 in the embodiment described above).
  • the rotation mechanism 6 may be configured to rotate only the shaft member including the screw shaft.
  • the transport device 10 can be simplified and reduced in cost. Can do.
  • heating coil 2 not only one heating coil 2 but also a plurality of heating coils 2 can be arranged along the extending direction of the guide conveyance path P.
  • the first shaft member 11 and the second shaft member 12 are arranged so that the centers thereof are located at the same height. As shown in FIG. 4, they may be different from each other.
  • the second shaft member 12 formed of a screw shaft is disposed relatively upward
  • the first shaft member 11 ′ having a substantially L-shaped cross section is disposed relatively downward.
  • a guide conveyance path P is formed by the groove bottom surface 15 of the spiral groove 14 provided in the second shaft member 12 and the work support surface 11a ′ of the first shaft member 11 ′
  • the work support portion 16 is formed by the first shaft. It is comprised by the workpiece
  • the workpiece support surface 11a ′ of the first shaft member 11 ′ constituting the workpiece support portion 16 (more specifically, the workpiece support surface 11a ′ faces the groove bottom surface 15 of the spiral groove 14).
  • the feed force in the direction along the guide conveyance path P and the black in the figure are A rotational force in the direction indicated by the paint arrow is applied.
  • the work support surface 11a ′ has an uneven shape as shown in the illustrated example, and a plurality of locations on the work W are formed. A point contact support is preferred.
  • the tapered roller which comprises a tapered roller bearing was illustrated as the workpiece
  • the induction heating apparatus 1 is a ball (ball) which comprises a ball bearing. Also, it can be preferably used when induction rolling is performed on rolling elements of other rolling bearings such as a cylindrical roller constituting a cylindrical roller bearing or a needle roller constituting a needle roller bearing.
  • the induction heating apparatus 1 according to the embodiment of the present invention can be preferably used not only for the solid workpiece W such as the various rolling elements described above but also for the induction heating of the hollow workpiece W.
  • the induction heating device 1 induces a work W that can rotate as one or both of the shaft members 11 and 12 constituting the transport device 10 are rotationally driven around the axis. Any type of workpiece can be used as long as it is heated.

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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)
  • Electromagnetism (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

Cet appareil de chauffage par induction 1 est pourvu : d'un dispositif de transfert 10 destiné à transférer une pièce à travailler pouvant tourner W le long d'un chemin de transfert de guidage linéaire P; et d'une bobine de chauffage 2 destinée à chauffer par induction la pièce à travailler W transférée le long du chemin de transfert de guidage P. Le dispositif de transfert 10 est pourvu : d'un premier élément d'arbre 11 et d'un second élément d'arbre 12, espacés l'un de l'autre et parallèles l'un à l'autre; et d'un mécanisme de rotation 6 destiné à entraîner et faire tourner au moins un (le second élément d'arbre 12) des éléments d'arbre 11, 12 autour de son axe. Le second élément d'arbre 12 comprend un arbre à vis présentant une saillie hélicoïdale 13 disposée le long de sa circonférence extérieure. La saillie hélicoïdale 13 définit une gorge hélicoïdale 14 sur le second élément d'arbre 12 et le fond de gorge 15 de la gorge hélicoïdale 14 forme le chemin de transfert de guidage P.
PCT/JP2017/021990 2016-06-24 2017-06-14 Appareil et procédé de chauffage par induction WO2017221789A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201780038479.XA CN109312420A (zh) 2016-06-24 2017-06-14 感应加热装置及感应加热方法
EP17815258.3A EP3476956A4 (fr) 2016-06-24 2017-06-14 Appareil et procédé de chauffage par induction
US16/312,344 US20190239291A1 (en) 2016-06-24 2017-06-14 Induction heating apparatus and induction heating method

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2016-125713 2016-06-24
JP2016125713 2016-06-24
JP2017-097280 2017-05-16
JP2017097280A JP2018006327A (ja) 2016-06-24 2017-05-16 誘導加熱装置及び誘導加熱方法

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WO2017221789A1 true WO2017221789A1 (fr) 2017-12-28

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PCT/JP2017/021990 WO2017221789A1 (fr) 2016-06-24 2017-06-14 Appareil et procédé de chauffage par induction

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19827608C1 (de) * 1998-06-20 2000-02-24 Fraunhofer Ges Forschung Vorrichtung zum Fördern mit Prüfabschnitt
JP2002145437A (ja) * 2000-11-08 2002-05-22 Yasuhiko Ishii 搬送装置、加熱脱脂装置及び表面処理剤塗布装置
JP2005331005A (ja) 2004-05-19 2005-12-02 Ntn Corp 転動体の製造方法および装置
WO2007010567A1 (fr) * 2005-07-20 2007-01-25 Euroball S.P.A. Traitement thermique d’éléments de roulement pour paliers, et four pour mettre en œuvre ce traitement
JP2008169430A (ja) * 2007-01-11 2008-07-24 Jfe Steel Kk 鋼球の熱処理装置および鋼球の熱処理方法
JP2009084664A (ja) 2007-10-02 2009-04-23 Mitsui Eng & Shipbuild Co Ltd 誘導加熱ビレットヒータ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19827608C1 (de) * 1998-06-20 2000-02-24 Fraunhofer Ges Forschung Vorrichtung zum Fördern mit Prüfabschnitt
JP2002145437A (ja) * 2000-11-08 2002-05-22 Yasuhiko Ishii 搬送装置、加熱脱脂装置及び表面処理剤塗布装置
JP2005331005A (ja) 2004-05-19 2005-12-02 Ntn Corp 転動体の製造方法および装置
WO2007010567A1 (fr) * 2005-07-20 2007-01-25 Euroball S.P.A. Traitement thermique d’éléments de roulement pour paliers, et four pour mettre en œuvre ce traitement
JP2008169430A (ja) * 2007-01-11 2008-07-24 Jfe Steel Kk 鋼球の熱処理装置および鋼球の熱処理方法
JP2009084664A (ja) 2007-10-02 2009-04-23 Mitsui Eng & Shipbuild Co Ltd 誘導加熱ビレットヒータ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3476956A4 *

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