JPH05179341A - High-frequency heating method and device for shaft-shaped work - Google Patents
High-frequency heating method and device for shaft-shaped workInfo
- Publication number
- JPH05179341A JPH05179341A JP3359625A JP35962591A JPH05179341A JP H05179341 A JPH05179341 A JP H05179341A JP 3359625 A JP3359625 A JP 3359625A JP 35962591 A JP35962591 A JP 35962591A JP H05179341 A JPH05179341 A JP H05179341A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- heating
- shaft portion
- work
- recess
- 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.)
- Granted
Links
Classifications
-
- 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
- Heat Treatment Of Articles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は軸状ワークの高周波加熱
方法および装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high frequency heating method and apparatus for a shaft-shaped work.
【０００２】[0002]
【従来の技術】以下、図面を参照して従来の技術を説明
する。図２は高周波加熱コイル（以下単に加熱コイルと
もいう) とカレントトランスとの模式的斜視図、図３は
高周波焼入装置の正面説明図、図４高周波焼入装置の側
面説明図、図５は軸状ワークの従来の高周波焼入方法と
装置の説明図である。2. Description of the Related Art A conventional technique will be described below with reference to the drawings. 2 is a schematic perspective view of an induction heating coil (hereinafter also simply referred to as a heating coil) and a current transformer, FIG. 3 is a front explanatory view of the induction hardening device, FIG. 4 is a side view illustration of the induction hardening device, and FIG. It is explanatory drawing of the conventional induction hardening method and apparatus of a shaft-shaped workpiece.
【０００３】図５に示すように、軸状ワーク50は、第１
軸部51と、第１軸部51に一体形成され、第１軸部51より
径の大きい第２軸部52と、第１軸部51の周面51a に引き
続くように第２軸部52の側面52a に形成した環状の凹所
53とを備えている。As shown in FIG. 5, the shaft-shaped work 50 has a first
The shaft portion 51 and the second shaft portion 52 integrally formed with the first shaft portion 51 and having a diameter larger than that of the first shaft portion 51, and the second shaft portion 52 of the second shaft portion 52 so as to follow the peripheral surface 51a of the first shaft portion 51. An annular recess formed on the side surface 52a
It has 53 and.
【０００４】被加熱面は凹所53と周面51a であって、こ
れら被加熱面を同時に加熱する加熱コイル10は、図２と
図５に示すように、凹所53の形状に対応するように形成
されたほぼ１／２円弧状の第１加熱導体11と、一端がそ
れぞれ第１加熱導体11の両端に接続され、且つ第１軸部
51の周面51a の形状に対応するように形成された１対の
第２加熱導体12、12と、第２加熱導体12、12の他端にそ
れぞれの一端が接続されたほぼ１／４円弧状の１対の第
３加熱導体13、13と、第３加熱導体13、13の他端にそれ
ぞれ一端が接続された１対の電源導体18、18とを備えて
いる。The surface to be heated is the recess 53 and the peripheral surface 51a, and the heating coil 10 for simultaneously heating the surface to be heated corresponds to the shape of the recess 53 as shown in FIG. 2 and FIG. The first heating conductor 11 having a substantially arcuate shape formed on the first heating conductor 11 and one end thereof connected to both ends of the first heating conductor 11, respectively, and the first shaft portion
A pair of second heating conductors 12, 12 formed so as to correspond to the shape of the peripheral surface 51a of 51, and one end of each of the second heating conductors 12, 12 is connected to the other end of the second heating conductors 12, 12 and is approximately a quarter circle. It is provided with a pair of arc-shaped third heating conductors 13, 13 and a pair of power supply conductors 18, 18 each having one end connected to the other end of the third heating conductors 13, 13.
【０００５】電源導体18、18の他端は、図示しない高周
波電源から高周波電流を供給されるカレントトランス19
の出力側に接続されている。なお、14は磁性体のコアで
あって、第１加熱導体11が発生する磁束を凹所53の表面
に集束する役目をする。The other ends of the power supply conductors 18, 18 are current transformers 19 supplied with a high frequency current from a high frequency power source (not shown).
Is connected to the output side of. A magnetic core 14 serves to focus the magnetic flux generated by the first heating conductor 11 on the surface of the recess 53.
【０００６】図３と４に示す高周波焼入装置は、冷却液
Ｌを収容したタンク60と、ワーク移動装置70とを備えて
いる。ワーク移動装置70は、タンク60の側壁61上に設け
た１対の軸受71によって支持されているシャフト72と、
シャフト72に取り付けられた１対のワーク保持部材73
と、シャフト72の一端に取り付けられたモータ79とを備
えている。モータ79は、タンク60の側壁61に設けられた
台78上に固定されている。The induction hardening apparatus shown in FIGS. 3 and 4 comprises a tank 60 containing a cooling liquid L and a work moving apparatus 70. The work moving device 70 includes a shaft 72 supported by a pair of bearings 71 provided on the side wall 61 of the tank 60,
A pair of work holding members 73 attached to the shaft 72
And a motor 79 attached to one end of the shaft 72. The motor 79 is fixed on a base 78 provided on the side wall 61 of the tank 60.
【０００７】各ワーク保持部材73は、シャフト72を中心
として120 度間隔でシャフト72から凸設された３個のワ
ーク保持板74を有し、一方のワーク保持部材73のワーク
保持板74にはチャック42が設けられており、また、他方
のワーク保持部材73のワーク保持板74にはセンタ41が設
けられている。そして、チャック42とセンタ41とが対向
するようにワーク保持板74が配設されている。Each work holding member 73 has three work holding plates 74 projecting from the shaft 72 at intervals of 120 degrees around the shaft 72. One work holding plate 73 has one work holding plate 74. A chuck 42 is provided, and a work holding plate 74 of the other work holding member 73 is provided with a center 41. A work holding plate 74 is arranged so that the chuck 42 and the center 41 face each other.
【０００８】ワーク保持部材73は、モータ79によって回
転されて、受入取外しステーションＡ、加熱ステーショ
ンＢおよび冷却ステーションＣを経て再び受入取外しス
テーションＡに帰る。なお、ワーク移動装置70には各チ
ャック42を回転させるワーク回転機構（図示省略）が設
けられている。また、センタ41は図示しないクランプ機
構が設けられており、ワークの支持はバネ圧によって保
持されている。The work holding member 73 is rotated by the motor 79, and returns to the receiving and removing station A again via the receiving and removing station A, the heating station B and the cooling station C. The work moving device 70 is provided with a work rotating mechanism (not shown) for rotating each chuck 42. Further, the center 41 is provided with a clamp mechanism (not shown), and the work is supported by spring pressure.
【０００９】受入取外しステーションＡでチャック42と
センタ41とによってワーク保持板74間に水平に保持され
たワーク50は、モータ79によってワーク保持部材73が矢
印Ｋの方向に回転されることによって加熱ステーション
Ｂに至る。すると、前記ワーク回転機構によってワーク
50の回転が開始される。次いで、加熱コイル移送手段
（図示省略）によって、加熱コイル10は矢印Ｐの方向に
ワーク50に向かって降下し、加熱コイル10の第２加熱導
体12がワーク50の第１軸部51の周面51a に対向接近した
位置で降下を停止する。この後、更に、前記加熱コイル
移送手段によって、加熱コイル10を矢印Ｑの方向に、即
ち、軸59の方向に移動させて、第１加熱導体11を凹所53
に対向接近させる。The work 50 held horizontally between the work holding plates 74 by the chuck 42 and the center 41 at the receiving / removing station A is heated by the motor 79 rotating the work holding member 73 in the direction of arrow K. To B. Then, the work rotating mechanism causes the work to
50 rotations are started. Next, the heating coil transfer means (not shown) lowers the heating coil 10 toward the work 50 in the direction of arrow P, and the second heating conductor 12 of the heating coil 10 causes the peripheral surface of the first shaft portion 51 of the work 50 to move. Stop descending at a position close to 51a. Thereafter, the heating coil transfer means further moves the heating coil 10 in the direction of the arrow Q, that is, in the direction of the axis 59, so that the first heating conductor 11 is recessed 53.
To approach to.
【００１０】次いで、加熱コイル10にカレントトランス
19から高周波電流を所定時間通電して凹所53と周面51a
の加熱を終了してから、前記加熱コイル移送手段によっ
て、加熱コイル10を矢印Ｑと反対方向に移動後、更に矢
印Ｐと反対方向に移動して元の待機位置に復帰させる。Next, a current transformer is attached to the heating coil 10.
A high frequency current is supplied from 19 for a predetermined time to form a recess 53 and a peripheral surface 51a.
After the heating is completed, the heating coil transfer means moves the heating coil 10 in the direction opposite to the arrow Q and then in the direction opposite to the arrow P to restore the original standby position.
【００１１】加熱コイル10が待機位置に復帰すると、モ
ータ79によってワーク保持部材73を回転してワーク50を
冷却ステーションＣに移動させる。冷却ステーションＣ
ではワーク50は冷却液Ｌ中に浸漬されて冷却が行われ、
凹所53および周面51a に硬化層58が形成される。ワーク
50の冷却が終了すると、モータ79によってワーク保持部
材73を回転させてワーク50を受入取外しステーションＡ
に移動し、焼入されたワーク50を取り外してから、新し
いワーク50をワーク保持部材73に取り付ける。When the heating coil 10 returns to the standby position, the motor 79 rotates the work holding member 73 to move the work 50 to the cooling station C. Cooling station C
Then, the work 50 is immersed in the cooling liquid L to be cooled,
A hardened layer 58 is formed on the recess 53 and the peripheral surface 51a. work
When the cooling of the work 50 is completed, the work holding member 73 is rotated by the motor 79 to receive and remove the work 50.
To remove the quenched work 50, and then attach a new work 50 to the work holding member 73.
【００１２】[0012]
【発明が解決しようとする課題】しかしながら、このよ
うな加熱方法には、以下に述べる問題がある。即ち、加
熱コイル10を被加熱面に接近させるに際して、前述のよ
うに、まず、矢印Ｐの方向に移動してから、次いで矢印
Ｐの方向と直角な矢印Ｑの方向に移動する。また、加熱
終了後は、矢印Ｑと反対方向に移動してから、矢印Ｐと
反対方向に移動させる。However, such a heating method has the following problems. That is, when the heating coil 10 is brought closer to the surface to be heated, as described above, it first moves in the direction of arrow P and then moves in the direction of arrow Q perpendicular to the direction of arrow P. Further, after the heating is completed, it is moved in the direction opposite to the arrow Q and then moved in the direction opposite to the arrow P.
【００１３】即ち、加熱コイル10が被加熱面に接近する
とき、および、待機位置へ復帰するときの何れにおいて
も、いわゆる２段モーションをしなければならないの
で、まず、加熱コイルの移動自体に時間がかかる。ま
た、ワークの冷却ステーションへの移動は、加熱コイル
が待機位置に復帰してから、或いは、加熱コイルがワー
クから所定の距離だけ離れてから行うので、加熱コイル
自体の移動が遅いと、加熱後のワークが、加熱ステーシ
ョンから冷却ステーションに至るまでにも時間がかか
る。従って、焼入工程が長くなるのみならず、所定の焼
入深さがえられない。また、加熱コイル移送手段は、加
熱コイルを矢印Ｐの方向に移動させる装置と、矢印Ｑの
方向に移動させる装置の２つの装置が必要であるので、
高周波加熱装置の構造が複雑になり、且つコストが高く
なる問題がある。That is, since the so-called two-step motion must be performed both when the heating coil 10 approaches the surface to be heated and when it returns to the standby position, first of all, it takes time to move the heating coil itself. Takes. In addition, the work is moved to the cooling station after the heating coil returns to the standby position or after the heating coil is separated from the work by a predetermined distance. It takes time for the work to reach from the heating station to the cooling station. Therefore, not only the quenching process becomes long, but also a predetermined quenching depth cannot be obtained. Further, since the heating coil transfer means requires two devices, a device for moving the heating coil in the direction of arrow P and a device for moving the heating coil in the direction of arrow Q,
There is a problem that the structure of the high-frequency heating device becomes complicated and the cost becomes high.
【００１４】一方、上記のような高周波加熱装置による
ことなく、周面51a と凹所53とを環状の高周波加熱コイ
ルによって移動焼入することが考えられるが、移動焼入
では、凹所53の加熱が不十分であって凹所53から周面51
a にわたって形成された硬化層の深さが均一でないこ
と、高周波加熱コイルが移動焼入開始位置まで戻るのに
要する時間だけ加熱工程が長くなること、および、加熱
コイルにワークを挿入するのに手間がかかる、等の問題
がある。On the other hand, it is conceivable to move and quench the peripheral surface 51a and the recess 53 with an annular high-frequency heating coil instead of using the high-frequency heating device as described above. Insufficient heating due to recess 53 to peripheral surface 51
The depth of the hardened layer formed over a is not uniform, the heating process is lengthened by the time required for the high-frequency heating coil to return to the moving and quenching start position, and it is troublesome to insert the work into the heating coil. There is a problem that it takes time.
【００１５】本発明は上記事情に鑑みて創案されたもの
であって、第１軸部と、第１軸部と一体形成され、第１
軸部より径の大きい第２軸部と、第１軸部の周面に引き
続くように第２軸部の側面に形成した環状の凹所とを備
えた軸状ワークを、この軸状ワークの長手方向の軸を中
心として回転させながら、被加熱面である前記凹所およ
び前記周面を同時に加熱する軸状ワークの高周波加熱方
法において、高周波加熱コイルが短時間で、被加熱面に
接近し、且つ待機位置ヘ復帰することができ、しかも、
凹所の加熱が十分に行われる高周波加熱方法および装置
を提供することを目的としている。The present invention has been made in view of the above circumstances, and is formed by integrally forming a first shaft portion and a first shaft portion.
A shaft-shaped workpiece having a second shaft portion having a diameter larger than that of the shaft portion and an annular recess formed on a side surface of the second shaft portion so as to follow the peripheral surface of the first shaft portion is provided. In a high-frequency heating method for a shaft-shaped workpiece, which simultaneously heats the recess and the peripheral surface, which are the surfaces to be heated, while rotating about a longitudinal axis, the high-frequency heating coil approaches the surfaces to be heated in a short time. , And can return to the standby position, and
It is an object of the present invention to provide a high-frequency heating method and device capable of sufficiently heating a recess.
【００１６】[0016]
【課題を解決するための手段】上記問題を解決するため
に、本発明の軸状ワークの高周波加熱方法は、第１軸部
と、第１軸部と一体形成され、第１軸部より径の大きい
第２軸部と、第１軸部の周面に引き続くように第２軸部
の側面に形成した環状の凹所とを備えた軸状ワークを、
この軸状ワークの長手方向の軸を中心として回転させな
がら、被加熱面である前記凹所および前記周面を同時に
加熱する軸状ワークの高周波加熱方法において、前記凹
所と周面とを加熱する高周波加熱コイルを、前記長手方
向と、前記長手方向に直角な方向との間の方向から、前
記被加熱面に接近させて前記被加熱面に対向するように
配設し、次いで、前記高周波加熱コイルによって前記被
加熱面を加熱する。In order to solve the above problems, a method for high-frequency heating a shaft-shaped work according to the present invention is formed such that a first shaft portion and a first shaft portion are integrally formed, and the diameter is larger than that of the first shaft portion. And a second shaft portion having a large diameter and an annular recess formed on the side surface of the second shaft portion so as to follow the peripheral surface of the first shaft portion.
In the high-frequency heating method for a shaft-shaped work, which simultaneously heats the recess and the peripheral surface, which are the surfaces to be heated, while rotating about the longitudinal axis of the shaft-shaped work, heating the recess and the peripheral surface. A high-frequency heating coil that is arranged so as to approach the heated surface and face the heated surface from a direction between the longitudinal direction and a direction perpendicular to the longitudinal direction. The heated surface is heated by a heating coil.
【００１７】また、本発明の軸状ワークの高周波加熱装
置は、前記凹所の形状に対応するように形成された円弧
状の第１加熱導体と、一端がそれぞれ第１加熱導体の両
端に接続され、他端間に高周波電圧が印加されると共
に、前記周面の形状に対応するように形成された１対の
第２加熱導体とを設けた高周波加熱コイルと、この高周
波加熱コイルを、前記長手方向と、前記長手方向に直角
な方向との間の方向から、前記被加熱面に接近させて被
加熱面に対向するように配設する手段とを備ている。Further, in the high frequency heating apparatus for a shaft-shaped work according to the present invention, an arc-shaped first heating conductor formed so as to correspond to the shape of the recess and one end thereof is connected to both ends of the first heating conductor, respectively. And a high-frequency voltage is applied between the other ends, and a high-frequency heating coil provided with a pair of second heating conductors formed so as to correspond to the shape of the peripheral surface; A means is provided so as to approach the surface to be heated and face the surface to be heated from a direction between a longitudinal direction and a direction perpendicular to the longitudinal direction.
【００１８】[0018]
【実施例】以下、図面を参照して本発明の軸状ワークの
高周波加熱方法を実現することができる高周波加熱装置
の一実施例を説明する。図１は本実施例の説明図であっ
て、図２〜５で説明したものと同等のものには同一の符
号を付している。また、本実施例に用いる加熱コイル1
0、カレントトランス19、採り上げたワーク50、タンク6
0、ワーク移動装置70は、前述のものと同様であるので
説明を省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a high frequency heating device capable of realizing the high frequency heating method for a shaft-like work according to the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram of this embodiment, and the same components as those described in FIGS. 2 to 5 are designated by the same reference numerals. In addition, the heating coil 1 used in this embodiment
0, current transformer 19, workpiece 50, tank 6
0 and the work moving device 70 are the same as those described above, and thus the description thereof is omitted.
【００１９】図１に示すように、カレントトランス19
は、水平なトランス取付台21上に固定されている。そし
て、本実施例の高周波加熱装置は、加熱コイル10および
カレントトランス19を移動させてワーク50に接近させた
り、待機位置へ復帰させたりする手段として加熱コイル
移動装置20を備えている。As shown in FIG. 1, the current transformer 19
Are fixed on a horizontal transformer mount 21. The high-frequency heating apparatus of this embodiment is equipped with a heating coil moving device 20 as a means for moving the heating coil 10 and the current transformer 19 to bring them closer to the work 50 or returning to the standby position.
【００２０】加熱コイル移動装置20は、カレントトラン
ス19が上面に固定されたトランス取付台21と、トランス
支持柱22と、シリンダ28とを備えている。トランス取付
台21の両端部分には、それぞれ、ピン23を介してトラン
ス支持柱22の一端が回動自在に接続されている。トラン
ス支持柱22の他端は、ピン24を介して本実施例の高周波
加熱装置の支持面Ｈに凸設されたトランス支持部材25に
回動自在に接続されている。The heating coil moving device 20 is provided with a transformer mounting base 21 having a current transformer 19 fixed to the upper surface thereof, a transformer supporting column 22, and a cylinder 28. One end of a transformer support column 22 is rotatably connected to both ends of the transformer mount 21 via pins 23, respectively. The other end of the transformer support column 22 is rotatably connected via a pin 24 to a transformer support member 25 protruding from the support surface H of the high-frequency heating apparatus of this embodiment.
【００２１】空気圧等によって動作するシリンダ28の一
端は、ピン29によって、前記支持面Ｈに固定されたシリ
ンダ取付部材29a に回動自在に取り付けられており、シ
リンダ28の他端から進退するロッド27の先端は、ピン26
によって、前記トランス取付台21の一端部分に回動自在
に取り付けられている。One end of a cylinder 28 which is operated by air pressure or the like is rotatably attached to a cylinder attachment member 29a fixed to the support surface H by a pin 29, and a rod 27 which advances and retracts from the other end of the cylinder 28. The tip of pin 26
Is rotatably attached to one end of the transformer mount 21.
【００２２】トランス支持柱22の長さ、および、トラン
ス支持部材25の位置は、シリンダ28を動作させてロッド
27を進出させたときに、加熱コイル10の加熱導体11およ
び12が、加熱ステーションＢに至ったワーク50の凹所53
および周面51a に接近対向した位置で停止するように選
定されている。The length of the transformer support column 22 and the position of the transformer support member 25 are determined by operating the cylinder 28.
When 27 is advanced, the heating conductors 11 and 12 of the heating coil 10 reach the heating station B, and the recess 53 of the workpiece 50 is reached.
It is also selected to stop at a position close to and facing the circumferential surface 51a.
【００２３】次に、本実施例の動作を説明する。但し、
従来の高周波焼入装置で述べた加熱コイル10の動作と異
なるところのみを説明する。加熱ステーションＢに至っ
てワーク50が回転を開始されると、シリンダ28を動作さ
せてロッド27を進出させる。すると、加熱コイル10の加
熱導体11がワーク50の第２軸部52の凹所53に、矢印Ｊに
示すように、斜め上方より降下して接近対向した位置で
停止する。同様に加熱導体12も斜め上方より降下して第
１軸部51の周面51a に接近対向した位置で停止する。Next, the operation of this embodiment will be described. However,
Only the difference from the operation of the heating coil 10 described in the conventional induction hardening apparatus will be described. When the work 50 reaches the heating station B and starts to rotate, the cylinder 28 is operated and the rod 27 is advanced. Then, the heating conductor 11 of the heating coil 10 falls in the recess 53 of the second shaft portion 52 of the workpiece 50 from an obliquely upper position and stops at a position close to and opposed to the recess 53. Similarly, the heating conductor 12 also descends obliquely from above and stops at a position close to and facing the peripheral surface 51a of the first shaft portion 51.
【００２４】加熱コイル10にカレントトランス19から高
周波電流を所定時間通電して凹所53と周面51a の加熱を
終了する。そして、シリンダ28を動作させてロッド27を
後退させると、加熱コイル10は、矢印Ｊと反対の方向、
即ち、斜め上方へ移動されて元の待機位置へ復帰する。A high-frequency current is passed from the current transformer 19 to the heating coil 10 for a predetermined time to finish heating the recess 53 and the peripheral surface 51a. Then, when the cylinder 28 is operated to retract the rod 27, the heating coil 10 moves in the direction opposite to the arrow J,
That is, it moves diagonally upward and returns to the original standby position.
【００２５】本実施例では、加熱コイル10が被加熱面に
接近するとき、および、待機位置へ復帰するときは、そ
れぞれ、シリンダ28を動作させてロッド27を進出、およ
び、後退させる１段モーションのみであり、加熱コイル
10の加熱導体11と12は共に円弧を描きながら、斜め上方
から、それぞれ、凹所53および周面51a に接近し、ま
た、斜め上方へ離れてゆく。従って、加熱コイル10の被
加熱面への接離の時間が短いので、加熱コイル10自体の
移動時間が短い。また、ワーク50の加熱終了後、ワーク
50の冷却ステーションＣへの移動を早く開始できるの
で、所定の焼入深さがえられ、また焼入工程を短縮する
ことができる。In this embodiment, when the heating coil 10 approaches the surface to be heated and when it returns to the standby position, the cylinder 28 is operated to move the rod 27 forward and backward, and the one-step motion is performed. Is only a heating coil
While heating arcs 11 and 12 of 10 both draw an arc, they approach the recess 53 and the peripheral surface 51a from diagonally above and move away diagonally above. Therefore, since the time required for the heating coil 10 to come in and out of contact with the surface to be heated is short, the movement time of the heating coil 10 itself is short. Also, after heating the workpiece 50,
Since the transfer of 50 to the cooling station C can be started quickly, a predetermined quenching depth can be obtained, and the quenching process can be shortened.
【００２６】本実施例では、ワーク50の冷却を加熱位置
と別の場所で行っているが、ワークの材料によっては、
加熱位置において噴射ジャケットによって冷却を行うこ
ともある。In the present embodiment, the work 50 is cooled at a place different from the heating position, but depending on the material of the work,
Cooling may also be provided by the spray jacket in the heating position.
【００２７】[0027]
【発明の効果】以上説明したように、本発明の軸状ワー
クの高周波加熱方法は、第１軸部と、第１軸部と一体形
成され、第１軸部より径の大きい第２軸部と、第１軸部
の周面に引き続くように第２軸部の側面に形成した環状
の凹所とを備えた軸状ワークを、この軸状ワークの長手
方向の軸を中心として回転させながら、被加熱面である
前記凹所および前記周面を同時に加熱する軸状ワークの
高周波加熱方法において、前記凹所と周面とを加熱する
高周波加熱コイルを、前記長手方向と、前記長手方向に
直角な方向との間の方向から、前記被加熱面に接近させ
て前記被加熱面に対向するように配設し、次いで、前記
高周波加熱コイルによって前記被加熱面を加熱する。As described above, according to the high frequency heating method for a shaft-shaped work of the present invention, the first shaft portion and the second shaft portion which are integrally formed with the first shaft portion and have a diameter larger than that of the first shaft portion. While rotating the shaft-shaped work having the annular recess formed on the side surface of the second shaft so as to continue to the peripheral surface of the first shaft around the longitudinal axis of the shaft-shaped work. In the high frequency heating method of the shaft-shaped workpiece for simultaneously heating the recess and the peripheral surface which are the surfaces to be heated, a high frequency heating coil for heating the recess and the peripheral surface is provided in the longitudinal direction and in the longitudinal direction. The heating surface is arranged so as to approach the heating surface and face the heating surface from a direction between the right-angled direction, and then the heating surface is heated by the high-frequency heating coil.
【００２８】また、本発明の軸状ワークの高周波加熱装
置は、前記凹所の形状に対応するように形成された円弧
状の第１加熱導体と、一端がそれぞれ第１加熱導体の両
端に接続され、他端間に高周波電圧が印加されると共
に、前記周面の形状に対応するように形成された１対の
第２加熱導体とを設けた高周波加熱コイルと、この高周
波加熱コイルを、前記長手方向と、前記長手方向に直角
な方向との間の方向から、前記被加熱面に接近させて被
加熱面に対向するように配設する手段とを備ている。Further, in the high-frequency heating apparatus for a shaft-shaped work according to the present invention, an arc-shaped first heating conductor formed so as to correspond to the shape of the recess and one end thereof is connected to both ends of the first heating conductor, respectively. And a high-frequency voltage is applied between the other ends, and a high-frequency heating coil provided with a pair of second heating conductors formed so as to correspond to the shape of the peripheral surface; A means is provided so as to approach the surface to be heated and face the surface to be heated from a direction between a longitudinal direction and a direction perpendicular to the longitudinal direction.
【００２９】従って、本発明の高周波加熱方法および装
置によれば、加熱コイルは斜め上方からワークに接近
し、また、斜め上方に離れてゆくので、加熱コイルがワ
ークへの接近する時間および離れて待機位置ヘ復帰する
時間を短縮することができる。また、冷却の開始に至る
までの時間も短縮できるので、所定の焼入深さをえら
れ、また、焼入工程を短縮できる。また、加熱コイルの
移動装置が簡単である上に、前記凹所の加熱を十分に行
うことができる利点も有する。Therefore, according to the high-frequency heating method and apparatus of the present invention, since the heating coil approaches the work from diagonally above and also moves away from the diagonally above, the heating coil approaches the work at a time and away from the work. The time to return to the standby position can be shortened. Further, since the time until the start of cooling can be shortened, a predetermined quenching depth can be obtained, and the quenching process can be shortened. In addition, the heating coil moving device is simple, and the recess can be sufficiently heated.
【図１】本発明の軸状ワークの高周波加熱方法を実現す
ることができる高周波加熱装置の一実施例の説明図であ
る。FIG. 1 is an explanatory diagram of an embodiment of a high-frequency heating device capable of realizing a high-frequency heating method for a shaft-shaped work according to the present invention.
【図２】加熱コイルとカレントトランスの模式的斜視図
である。FIG. 2 is a schematic perspective view of a heating coil and a current transformer.
【図３】高周波焼入装置の正面説明図である。FIG. 3 is a front explanatory view of an induction hardening apparatus.
【図４】高周波焼入装置の側面説明図である。FIG. 4 is a side view of the induction hardening apparatus.
【図５】軸状ワークの従来の高周波加熱方法と装置の説
明図である。FIG. 5 is an explanatory diagram of a conventional high-frequency heating method and apparatus for a shaft-shaped work.
10 加熱コイル 11、12 加熱導体 50 ワーク 51 第１軸部 51a 周面 52 第２軸部 52a 側面 53 凹所 10 Heating coil 11, 12 Heating conductor 50 Work piece 51 First shaft portion 51a Circumferential surface 52 Second shaft portion 52a Side surface 53 Recess
Claims (2)
第１軸部より径の大きい第２軸部と、第１軸部の周面に
引き続くように第２軸部の側面に形成した環状の凹所と
を備えた軸状ワークを、この軸状ワークの長手方向の軸
を中心として回転させながら、被加熱面である前記凹所
および前記周面を同時に加熱する軸状ワークの高周波加
熱方法において、前記凹所と周面とを加熱する高周波加
熱コイルを、前記長手方向と、前記長手方向に直角な方
向との間の方向から、前記被加熱面に接近させて前記被
加熱面に対向するように配設し、次いで、前記高周波加
熱コイルによって前記被加熱面を加熱することを特徴と
する軸状ワークの高周波加熱方法。1. A first shaft portion is integrally formed with the first shaft portion,
A shaft-shaped work piece including a second shaft portion having a diameter larger than that of the first shaft portion and an annular recess formed on a side surface of the second shaft portion so as to follow the peripheral surface of the first shaft portion is formed into the shaft-shaped workpiece. In a high-frequency heating method for a shaft-shaped work, which simultaneously heats the recess and the peripheral surface, which are the surfaces to be heated, while rotating about the longitudinal axis of the work, high-frequency heating for heating the recess and the peripheral surface. A coil is disposed so as to approach the surface to be heated and face the surface to be heated from a direction between the longitudinal direction and a direction perpendicular to the longitudinal direction, and then by the high frequency heating coil. A high-frequency heating method for a shaft-shaped workpiece, comprising heating the surface to be heated.
第１軸部より径の大きい第２軸部と、第１軸部の周面に
引き続くように第２軸部の側面に形成した環状の凹所と
を備えた軸状ワークを、この軸状ワークの長手方向の軸
を中心として回転させながら、被加熱面である前記凹所
および前記周面を同時に加熱する軸状ワークの高周波加
熱装置において、前記凹所の形状に対応するように形成
された円弧状の第１加熱導体と、一端がそれぞれ第１加
熱導体の両端に接続され、他端間に高周波電圧が印加さ
れると共に、前記周面の形状に対応するように形成され
た１対の第２加熱導体とを設けた高周波加熱コイルと、
この高周波加熱コイルを、前記長手方向と、前記長手方
向に直角な方向との間の方向から、前記被加熱面に接近
させて被加熱面に対向するように配設する手段とを備え
たことを特徴とする軸状ワークの高周波加熱装置。2. The first shaft portion and the first shaft portion are integrally formed,
A shaft-shaped work piece including a second shaft portion having a diameter larger than that of the first shaft portion and an annular recess formed on a side surface of the second shaft portion so as to follow the peripheral surface of the first shaft portion is formed into the shaft-shaped workpiece. In a high-frequency heating device for a shaft-shaped work, which simultaneously heats the recess and the peripheral surface, which are the surfaces to be heated, while rotating about the longitudinal axis of the work, it is formed so as to correspond to the shape of the recess. And a pair of arc-shaped first heating conductors, one end of which is connected to both ends of the first heating conductor, a high-frequency voltage is applied between the other ends, and which is formed to correspond to the shape of the peripheral surface. A high-frequency heating coil provided with a second heating conductor of
A means for disposing the high-frequency heating coil so as to approach the surface to be heated and face the surface to be heated from a direction between the longitudinal direction and a direction perpendicular to the longitudinal direction. A high-frequency heating device for shaft-shaped workpieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3359625A JP2684484B2 (en) | 1991-12-26 | 1991-12-26 | High-frequency heating device for axial work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3359625A JP2684484B2 (en) | 1991-12-26 | 1991-12-26 | High-frequency heating device for axial work |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05179341A true JPH05179341A (en) | 1993-07-20 |
| JP2684484B2 JP2684484B2 (en) | 1997-12-03 |
Family
ID=18465456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3359625A Expired - Fee Related JP2684484B2 (en) | 1991-12-26 | 1991-12-26 | High-frequency heating device for axial work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2684484B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013124376A (en) * | 2011-12-13 | 2013-06-24 | Fuji Electronics Industry Co Ltd | High-frequency induction heating method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58118215A (en) * | 1982-01-07 | 1983-07-14 | Nissan Motor Co Ltd | Method and apparatus for manufacture of frp product |
| JPH0298667A (en) * | 1988-10-05 | 1990-04-11 | Kurabo Ind Ltd | Table moving device |
-
1991
- 1991-12-26 JP JP3359625A patent/JP2684484B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58118215A (en) * | 1982-01-07 | 1983-07-14 | Nissan Motor Co Ltd | Method and apparatus for manufacture of frp product |
| JPH0298667A (en) * | 1988-10-05 | 1990-04-11 | Kurabo Ind Ltd | Table moving device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013124376A (en) * | 2011-12-13 | 2013-06-24 | Fuji Electronics Industry Co Ltd | High-frequency induction heating method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2684484B2 (en) | 1997-12-03 |
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