JP2001172716A - High frequency induction heating coil and high frequency induction hardening method - Google Patents
High frequency induction heating coil and high frequency induction hardening methodInfo
- Publication number
- JP2001172716A JP2001172716A JP35394299A JP35394299A JP2001172716A JP 2001172716 A JP2001172716 A JP 2001172716A JP 35394299 A JP35394299 A JP 35394299A JP 35394299 A JP35394299 A JP 35394299A JP 2001172716 A JP2001172716 A JP 2001172716A
- Authority
- JP
- Japan
- Prior art keywords
- heating coil
- frequency heating
- heating
- groove
- ball
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/06—Particles of special shape or size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubricants (AREA)
- Heat Treatment Of Articles (AREA)
- General Induction Heating (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内面の円周方向に
溝が形成されたワークを高周波加熱する高周波加熱コイ
ルに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-frequency heating coil for high-frequency heating a work having a groove formed in a circumferential direction on an inner surface thereof.
【０００２】[0002]
【従来の技術】例えば、内面の円周方向に溝が形成され
たワークであるボールナットでは、溝であるボール溝に
硬度向上のために焼入を施さなければならない。このボ
ールナットに対する焼入は浸炭焼入が主流をなしてお
り、高周波焼入方法が実施された例はない。2. Description of the Related Art For example, in the case of a ball nut which is a work in which a groove is formed in a circumferential direction on an inner surface, it is necessary to harden the ball groove as a groove in order to improve hardness. Carburizing and quenching are the mainstream of quenching for this ball nut, and there is no example of induction hardening.
【０００３】[0003]
【発明が解決しようとする課題】これは、図１０に示す
ように加熱導体部６１０が螺旋に形成されたいわゆるマ
ルチターンコイル６００を使用すると、図９（Ａ）に示
すように、ボール溝Ｗ１の山部Ｗ１２のみ加熱されて、
山部Ｗ１２にのみ硬化層Ｗ３が形成されるのである。こ
れは、連続した硬化層Ｗ３が得られないので、浸炭焼入
に比べて疲労強度が低くなるためである。When a so-called multi-turn coil 600 in which a heating conductor portion 610 is spirally formed as shown in FIG. 10 is used, as shown in FIG. Only the peak W12 is heated,
The hardened layer W3 is formed only on the peak W12. This is because a continuous hardened layer W3 cannot be obtained, so that the fatigue strength is lower than that of carburizing and quenching.
【０００４】本発明に係る高周波加熱コイルは、浸炭焼
入に比べても遜色がない内面の円周方向に溝が形成され
たワークを高周波加熱する高周波加熱コイルと、高周波
焼入方法とを提供することを目的としている。A high-frequency heating coil according to the present invention provides a high-frequency heating coil for high-frequency heating a work having a groove formed in a circumferential direction on an inner surface, which is comparable to carburizing and quenching, and a high-frequency quenching method. It is intended to be.
【０００５】[0005]
【課題を解決するための手段】本発明に係る高周波加熱
コイルは、内面の円周方向に溝が形成されたワークを高
周波加熱する高周波加熱コイルであって、ワークの内面
と対向する加熱導体部が前記溝となす角度を４５°以上
１３５°以下としている。SUMMARY OF THE INVENTION A high-frequency heating coil according to the present invention is a high-frequency heating coil for high-frequency heating a work having a groove formed in a circumferential direction on an inner surface thereof, and a heating conductor portion facing the inner surface of the work. Make an angle of 45 ° or more and 135 ° or less with the groove.
【０００６】[0006]
【発明の実施の形態】図１は本発明の第１の実施の形態
に係る高周波加熱コイルの概略的斜視図、図２は本発明
の第１の実施の形態に係る高周波加熱コイルの加熱導体
部を説明するための概略的斜視図、図３は本発明の第１
の実施の形態に係る高周波加熱コイルの加熱導体部がボ
ール溝（溝）となす角度を説明する概略的説明図、図４
は本発明の第１の実施の形態に係る高周波加熱コイルの
概略的平面図、図５は本発明の第２の実施の形態に係る
高周波加熱コイルの概略的斜視図、図６は本発明の第２
の実施の形態に係る高周波加熱コイルの加熱導体部を説
明するための概略的斜視図、図７は本発明の第２の実施
の形態に係る高周波加熱コイルの概略的平面図、図８は
本発明の第３の実施の形態に係る高周波加熱コイルの概
略的斜視図、図９は本発明の第１、第２及び第３の実施
の形態に係る高周波加熱コイルでボールナットのボール
溝への高周波焼入で得られた硬化層と他の例とを比較す
る概略的断面図である。FIG. 1 is a schematic perspective view of a high-frequency heating coil according to a first embodiment of the present invention, and FIG. 2 is a heating conductor of the high-frequency heating coil according to the first embodiment of the present invention. FIG. 3 is a schematic perspective view for explaining a part, and FIG.
FIG. 4 is a schematic explanatory view illustrating an angle formed by a heating conductor portion of a high-frequency heating coil according to the embodiment with a ball groove (groove).
FIG. 5 is a schematic plan view of the high-frequency heating coil according to the first embodiment of the present invention, FIG. 5 is a schematic perspective view of the high-frequency heating coil according to the second embodiment of the present invention, and FIG. Second
FIG. 7 is a schematic perspective view for explaining a heating conductor portion of the high-frequency heating coil according to the embodiment, FIG. 7 is a schematic plan view of the high-frequency heating coil according to the second embodiment of the present invention, and FIG. FIG. 9 is a schematic perspective view of a high-frequency heating coil according to a third embodiment of the present invention. FIG. 9 is a high-frequency heating coil according to the first, second, and third embodiments of the present invention. It is a schematic sectional drawing which compares the hardened layer obtained by induction hardening with another example.
【０００７】以下の説明において、加熱導体部１１０と
ボール溝Ｗ１とがなす角度とは、図３に示すように、ワ
ークであるボールナットＷの内面と対向する加熱導体部
１１０Ａ、１１０Ｂがボール溝Ｗ１の上向き傾斜方向と
なす角度をいう。In the following description, the angle formed between the heating conductor portion 110 and the ball groove W1 means that the heating conductor portions 110A and 110B facing the inner surface of the ball nut W, which is a work, are formed by the ball groove as shown in FIG. W1 refers to the angle made with the upward inclination direction.
【０００８】本発明の第１の実施の形態に係る高周波加
熱コイル１００は、内面の円周方向にボール溝Ｗ１が形
成されたワークであるボールナットＷを高周波加熱する
高周波加熱コイルであって、ボールナットＷの内面と対
向する加熱導体部１１０Ａ、１１０Ｂが前記ボール溝Ｗ
１となす角度を４５°としている。A high-frequency heating coil 100 according to a first embodiment of the present invention is a high-frequency heating coil for high-frequency heating a ball nut W, which is a work having a ball groove W1 formed in a circumferential direction on an inner surface, The heating conductor portions 110A and 110B facing the inner surface of the ball nut W
The angle made with 1 is 45 °.
【０００９】この高周波加熱コイル１００は、図１に示
すように、２つの加熱導体部１１０Ａ、１１０Ｂと、こ
の加熱導体部１１０Ａ、１１０Ｂを連結する連結導体部
１２０と、２つの加熱導体部１１０Ａ、１１０Ｂに接続
された一対の給電導体部１３０Ａ、１３０Ｂとを有して
いる。この加熱導体部１１０Ａ、１１０Ｂと連結導体部
１２０と給電導体部１３０Ａ、１３０Ｂとは、導電性を
有する例えば銅等のパイプから構成されており、自身の
過熱を防止するための冷却液が循環するようになってい
る。As shown in FIG. 1, the high-frequency heating coil 100 includes two heating conductors 110A and 110B, a connecting conductor 120 connecting the heating conductors 110A and 110B, and two heating conductors 110A and 110B. It has a pair of power supply conductors 130A and 130B connected to 110B. The heating conductor portions 110A and 110B, the connection conductor portion 120, and the power supply conductor portions 130A and 130B are formed of conductive pipes such as copper, for example, and a coolant for preventing overheating of the pipes circulates. It has become.
【００１０】前記２つの加熱導体部１１０Ａ、１１０Ｂ
は、図２に示すように、仮想の円柱体５００の周面に巻
き付けられたようになっている。すなわち、一方の加熱
導体部１１０Ａの上端部１１１Ａと、他方の加熱導体部
１１０Ｂの上端部１１１Ｂとは同一高さで１８０°位相
がずれた位置にある。また、一方の加熱導体部１１０Ａ
の下端部１１２Ａと、他方の加熱導体部１１０Ｂの下端
部１１２Ｂとは同一高さで１８０°位相がずれた位置に
ある。そして、前記上端部１１１Ａ、１１１Ｂを結ぶ線
Ｌ１と、前記下端部１１２Ａ、１１２Ｂを結ぶ線Ｌ２と
は、図２及び図４に示すようにねじれの位置にある。[0010] The two heating conductors 110A, 110B
Is wound around the virtual cylinder 500 as shown in FIG. That is, the upper end 111A of one heating conductor 110A and the upper end 111B of the other heating conductor 110B are at the same height and 180 ° out of phase. Also, one heating conductor 110A
And the lower end 112B of the other heating conductor 110B are at the same height and 180 ° out of phase. The line L1 connecting the upper ends 111A and 111B and the line L2 connecting the lower ends 112A and 112B are located at the twisted positions as shown in FIGS.
【００１１】また、前記一対の給電導体部１３０Ａ、１
３０Ｂは、例えば銅等からなる導電性を有する略Ｌ字形
状の接続板１３１Ａ、１３１Ｂにそれぞれ接続されてい
る。また、この接続板１３１の間には、薄板状の絶縁板
１３２が介在されている。The pair of power supply conductors 130A, 1
30B is connected to conductive L-shaped connection plates 131A and 131B made of, for example, copper or the like. A thin insulating plate 132 is interposed between the connecting plates 131.
【００１２】このように構成された高周波加熱コイル１
００は、加熱導体部１１０Ａ、１１０Ｂを図１に示すよ
うに、ボールナットＷの内部に挿入した状態で高周波電
流が供給される。この状態では、加熱導体部１１０Ａ、
１１０ＢはボールナットＷの内面と対向するようになっ
ている。すると、ボール溝Ｗ１の山部Ｗ１２及び谷部Ｗ
１１に誘導電流が流れるため、ボール溝Ｗ１の山部Ｗ１
２及び谷部Ｗ１１を連続して加熱することができる。こ
の後、冷却液を噴射することでボール溝Ｗ１の山部Ｗ１
２及び谷部Ｗ１１に均一な硬化層Ｗ３（図９（Ｃ）参
照）を形成する。The high-frequency heating coil 1 configured as described above
At 00, a high-frequency current is supplied while the heating conductors 110A and 110B are inserted inside the ball nut W as shown in FIG. In this state, the heating conductor 110A,
110B faces the inner surface of the ball nut W. Then, the peak W12 and the valley W of the ball groove W1 are obtained.
11, the induced current flows through the ridge W1 of the ball groove W1.
2 and the valley W11 can be continuously heated. After that, the cooling liquid is injected, so that the peak W1 of the ball groove W1 is formed.
A uniform hardened layer W3 (see FIG. 9C) is formed on the second and valleys W11.
【００１３】ところで、ボール溝Ｗ１と加熱導体部１１
０Ａ、１１０Ｂとのなす角度が０°の場合には、ボール
ナットＷに流れる誘導電流は、ボール溝Ｗ１に沿って流
れるため、ボール溝Ｗ１の山部Ｗ１２に集中する。従っ
て、山部Ｗ１２のみが加熱され、谷部Ｗ１１は加熱され
ないことになる。このため、図９（Ａ）に示すように、
硬化層Ｗ３は山部Ｗ１２にのみ形成されることになる。By the way, the ball groove W1 and the heating conductor 11
When the angle between 0A and 110B is 0 °, the induced current flowing through the ball nut W flows along the ball groove W1, and therefore concentrates on the peak W12 of the ball groove W1. Therefore, only the peak W12 is heated, and the valley W11 is not heated. Therefore, as shown in FIG.
The hardened layer W3 is formed only on the peak W12.
【００１４】また、ボール溝Ｗ１と加熱導体部１１０
Ａ、１１０Ｂとのなす角度が０°より大きく、４５°未
満である場合には、ボールナットＷに流れる誘導電流の
多くが、ボール溝Ｗ１に沿って流れるため、ボール溝Ｗ
１の山部Ｗ１２に集中する。確かに、谷部Ｗ１１にも誘
導電流は流れるが、大部分が山部Ｗ１２に流れるため、
ボール溝Ｗ１の谷部Ｗ１１の加熱が不十分になる。この
ため、図９（Ｂ）に示すように、硬化層Ｗ３は山部Ｗ１
２には深いが、谷部Ｗ１１には不十分な深さ、ごく薄く
形成されるだけである。The ball groove W1 and the heating conductor 110
When the angle between A and 110B is greater than 0 ° and less than 45 °, most of the induced current flowing through the ball nut W flows along the ball groove W1.
Concentrate on the first mountain W12. Certainly, the induced current also flows to the valley W11, but most of the current flows to the ridge W12.
Heating of the valley W11 of the ball groove W1 becomes insufficient. Therefore, as shown in FIG. 9B, the hardened layer W3 has a peak W1.
2, the valley W11 is formed with an insufficient depth, that is, very thin.
【００１５】従って、ボール溝Ｗ１と加熱導体部１１０
Ａ、１１０Ｂとのなす角度が０°以上４５°未満の場合
には、山部Ｗ１２及び谷部Ｗ１１に、図９（Ａ）及び
（Ｂ）に示すように、十分な深さの硬化層を形成するこ
とができないことが実験で確認された。Therefore, the ball groove W1 and the heating conductor 110
When the angle between A and 110B is greater than or equal to 0 ° and less than 45 °, a hardened layer having a sufficient depth is provided on the peak W12 and the valley W11 as shown in FIGS. 9A and 9B. Experiments have shown that they cannot be formed.
【００１６】ボール溝Ｗ１と加熱導体部１１０Ａ、１１
０Ｂとのなす角度は、４５°以上１３５°以下であれ
ば、図９（Ｃ）に示すように、ボール溝Ｗ１の山部Ｗ１
２及び谷部Ｗ１１に十分な硬化層Ｗ３を形成することが
できることが実験で確認された。The ball groove W1 and the heating conductors 110A, 110
If the angle between 0B and 45 ° is not less than 45 ° and not more than 135 °, as shown in FIG. 9C, the peak W1 of the ball groove W1 is formed.
Experiments have confirmed that a sufficient hardened layer W3 can be formed in No. 2 and the valley W11.
【００１７】ところで、ボール溝Ｗ１と加熱導体部１１
０Ａ、１１０Ｂとのなす角度が１３５°以上になると、
ボール溝Ｗ１と加熱導体部１１０Ａ、１１０Ｂとのなす
角度が４５°未満となることに等しい。従って、ボール
溝Ｗ１と加熱導体部１１０Ａ、１１０Ｂとのなす角度の
最大限は１３５°になるのである。The ball groove W1 and the heating conductor 11
When the angle between 0A and 110B is 135 ° or more,
The angle formed between the ball groove W1 and the heating conductor portions 110A, 110B is equal to less than 45 °. Therefore, the maximum angle between the ball groove W1 and the heating conductor portions 110A and 110B is 135 °.
【００１８】本発明の第２の実施の形態に係る高周波加
熱コイル２００は、前記ボールナットＷのボール溝Ｗ１
を高周波加熱する高周波加熱コイルであって、ボールナ
ットＷの内面と対向する一対の加熱導体部２１０Ａ、１
１０Ｂが前記ボール溝Ｗ１となす角度を１３５°として
いる。The high-frequency heating coil 200 according to the second embodiment of the present invention comprises a ball groove W1 of the ball nut W.
Is a high-frequency heating coil for high-frequency heating of a pair of heating conductors 210A, 210A facing the inner surface of the ball nut W.
The angle between the ball groove 10B and the ball groove W1 is 135 °.
【００１９】この高周波加熱コイル２００が上述した高
周波加熱コイル１００と相違する点は、一対の加熱導体
部２１０Ａ、２１０Ｂである。すなわち、第１の実施の
形態に係る高周波加熱コイル１００における一対の加熱
導体部１１０Ａ、１１０Ｂがボール溝Ｗ１となす角度は
４５°であったが、第２の実施の形態に係る高周波加熱
コイル２００における一対の加熱導体部２１０Ａ、２１
０Ｂがボール溝Ｗ１となす角度は１３５°に設定されて
いるのである。This high-frequency heating coil 200 differs from the above-described high-frequency heating coil 100 in a pair of heating conductors 210A and 210B. That is, the angle formed by the pair of heating conductors 110A and 110B with the ball groove W1 in the high-frequency heating coil 100 according to the first embodiment is 45 °, but the high-frequency heating coil 200 according to the second embodiment is not used. A pair of heating conductors 210A, 21
The angle between 0B and the ball groove W1 is set to 135 °.
【００２０】このため、高周波加熱コイル２００の一対
の加熱導体部２１０Ａ、２１０Ｂは、図６に示すよう
に、仮想の円柱体５００の周面に巻き付けられる際に、
第１の実施の形態に係る高周波加熱コイル１００におけ
る一対の加熱導体部１１０Ａ、１１０Ｂよりきつい角度
で巻き付けられることになる。For this reason, as shown in FIG. 6, when the pair of heating conductor portions 210A and 210B of the high-frequency heating coil 200 are wound around the virtual cylindrical body 500,
The coil is wound at a tighter angle than the pair of heating conductors 110A and 110B in the high-frequency heating coil 100 according to the first embodiment.
【００２１】前記２つの加熱導体部２１０Ａ、２１０Ｂ
は、図６に示すように、仮想の円柱体５００の周面に巻
き付けられたようになっている。すなわち、一方の加熱
導体部２１０Ａの上端部２１１Ａと、他方の加熱導体部
２１０Ｂの上端部２１１Ｂとは同一高さで１８０°位相
がずれた位置にある。また、一方の加熱導体部２１０Ａ
の下端部２１２Ａと、他方の加熱導体部２１０Ｂの下端
部２１２Ｂとは同一高さで１８０°位相がずれた位置に
ある。そして、前記上端部２１１Ａ、２１１Ｂを結ぶ線
Ｌ１と、前記下端部２１２Ａ、２１２Ｂを結ぶ線Ｌ２と
は、図６及び図７に示すようにねじれの位置にある。The two heating conductors 210A and 210B
Is wound around the virtual cylinder 500 as shown in FIG. That is, the upper end 211A of one heating conductor 210A and the upper end 211B of the other heating conductor 210B are at the same height and 180 ° out of phase. Also, one heating conductor portion 210A
And the lower end 212B of the other heating conductor 210B are at the same height and 180 ° out of phase. The line L1 connecting the upper ends 211A and 211B and the line L2 connecting the lower ends 212A and 212B are located at the twisted positions as shown in FIGS.
【００２２】なお、他の部分は、上述した第１の実施の
形態に係る高周波加熱コイル１００と同一であるので詳
細な説明は省略する。すなわち、一対の加熱導体部２１
０Ａ、２１０Ｂは接続導体部２２０で接続されている点
や、一対の加熱導体部２１０Ａ、２１０Ｂには一対の給
電導体部２３０Ａ、２３０Ｂがそれぞれ接続されている
点や、略Ｌ字形状の接続板２３１Ａ、２３１Ｂや絶縁板
２３２がある点である。また、加熱導体部２１０Ａ、２
１０Ｂと連結導体部２２０と給電導体部２３０Ａ、２３
０Ｂとは、導電性を有する例えば銅等のパイプから構成
されており、自身の加熱を防止するために冷却液を循環
させている。The other parts are the same as those of the high-frequency heating coil 100 according to the above-described first embodiment, and a detailed description thereof will be omitted. That is, the pair of heating conductors 21
0A and 210B are connected by a connection conductor 220, a pair of heating conductors 210A and 210B are connected to a pair of power supply conductors 230A and 230B, and a substantially L-shaped connection plate. 231A and 231B and an insulating plate 232 are provided. Further, the heating conductor portions 210A,
10B, the connection conductor 220, and the power supply conductors 230A, 23
OB is made of a conductive pipe such as copper, for example, and circulates a cooling liquid to prevent heating of itself.
【００２３】この高周波加熱コイル２００を用いたボー
ルナットＷのボール溝Ｗ１の高周波焼入でも、図９
（Ｃ）に示すように、山部Ｗ２１と谷部Ｗ１１とに均一
な硬化層Ｗ３を形成する。The induction hardening of the ball groove W1 of the ball nut W using the induction heating coil 200 is also performed by the method shown in FIG.
As shown in (C), a uniform hardened layer W3 is formed on the peaks W21 and the valleys W11.
【００２４】次に、本発明の第３の実施の形態に係る高
周波加熱コイル３００について図８を参照しつつ説明す
る。本発明の第３の実施の形態に係る高周波加熱コイル
３００は、前記ボールナットＷのボール溝Ｗ１を高周波
加熱する高周波加熱コイルであって、ボールナットＷの
内面と対向する一対の加熱導体部３１０Ａ、３１０Ｂが
前記ボール溝Ｗ１となす角度を７５°としている。Next, a high-frequency heating coil 300 according to a third embodiment of the present invention will be described with reference to FIG. The high-frequency heating coil 300 according to the third embodiment of the present invention is a high-frequency heating coil for high-frequency heating the ball groove W1 of the ball nut W, and a pair of heating conductors 310A facing the inner surface of the ball nut W. , 310B make an angle of 75 ° with the ball groove W1.
【００２５】この高周波加熱コイル３００が上述した高
周波加熱コイル１００、２００と相違する点は、一対の
加熱導体部３１０Ａ、３１０Ｂである。すなわち、第１
の実施の形態に係る高周波加熱コイル１００における一
対の加熱導体部１１０Ａ、１１０Ｂがボール溝Ｗ１とな
す角度は４５°であり、第２の実施の形態に係る高周波
加熱コイル２００における一対の加熱導体部２１０Ａ、
２１０Ｂがボール溝Ｗ１となす角度は１３５°であった
のに対し、第３の実施の形態に係る高周波加熱コイル３
００における一対の加熱導体部３１０Ａ、３１０Ｂがボ
ール溝Ｗ１となす角度は７５°に設定されているのであ
る。The high-frequency heating coil 300 differs from the high-frequency heating coils 100 and 200 described above in a pair of heating conductors 310A and 310B. That is, the first
The angle formed between the pair of heating conductor portions 110A and 110B in the high frequency heating coil 100 according to the second embodiment with the ball groove W1 is 45 °, and the pair of heating conductor portions in the high frequency heating coil 200 according to the second embodiment. 210A,
The angle formed by 210B and the ball groove W1 was 135 °, whereas the high-frequency heating coil 3 according to the third embodiment
The angle formed between the pair of heating conductors 310A and 310B and the ball groove W1 at 00 is set to 75 °.
【００２６】前記２つの加熱導体部３１０Ａ、３１０Ｂ
は、図８に示すように、真っ直ぐ平行に形成されてい
る。すなわち、一方の加熱導体部３１０Ａの上端部３１
１Ａと、他方の加熱導体部３１０Ｂの上端部３１１Ｂと
を結ぶ線Ｌ1 と、一方の加熱導体部３１０Ａの下端部３
１２Ａと、他方の加熱導体部３１０Ｂの下端部３１２Ｂ
とを結ぶ線Ｌ2 とは平行になるのである。加熱導体部３
１０Ａ、３１０Ｂが真っ直ぐでもボール溝Ｗ１にも角度
がついているので、両者がなす角度が７５°になるので
ある。The two heating conductors 310A, 310B
Are formed straight and parallel as shown in FIG. That is, the upper end portion 31 of one heating conductor portion 310A
And 1A, a line L 1 connecting the upper end portion 311B of the other heating conductor portion 310B, the lower end 3 of one of the heating conductor portion 310A
12A and the lower end 312B of the other heating conductor 310B.
The line L 2 connecting the bets is become parallel. Heating conductor 3
Even if 10A and 310B are straight, the ball groove W1 is also angled, so that the angle between them is 75 °.
【００２７】他の点は、すでに上述した第１及び第２の
実施の形態に係る高周波加熱コイル１００、２００と同
様であるので詳細な説明は省略する。The other points are the same as those of the high-frequency heating coils 100 and 200 according to the first and second embodiments described above, so that detailed description will be omitted.
【００２８】なお、上述した実施の形態では、内面の円
周方向に溝が形成されたワークとして、ボールナットＷ
を挙げたが、他の例としては、ナット等がある。In the embodiment described above, the ball nut W is used as a workpiece having a groove formed in the inner surface in the circumferential direction.
However, another example is a nut or the like.
【００２９】[0029]
【発明の効果】本発明に係る高周波加熱コイルは、内面
の円周方向に溝が形成されたワークを高周波加熱する高
周波加熱コイルであって、ワークの内面と対向する加熱
導体部が前記溝となす角度を４５°以上１３５°以下と
したことを特徴としている。The high-frequency heating coil according to the present invention is a high-frequency heating coil for high-frequency heating a work in which a groove is formed on the inner surface in a circumferential direction, wherein a heating conductor portion facing the inner surface of the work is provided with the groove. The angle is 45 to 135 degrees.
【００３０】このように構成された高周波加熱コイルを
用いた前記ワークの高周波焼入では、溝の山部と谷部と
に均一な硬化層を形成することができる。これは、この
ように高周波加熱コイルを用いることが、前記山部と谷
部との均一な加熱をもたらすためである。特に、内面の
円周方向にボール溝が形成されたボールナットに用いる
と今までは、不可能であったボールナットの高周波焼入
を浸炭焼入と遜色ない程度に実施することが可能とな
る。In the induction hardening of the work using the high-frequency heating coil configured as described above, a uniform hardened layer can be formed at the crests and valleys of the grooves. This is because the use of the high-frequency heating coil as described above results in uniform heating of the peaks and valleys. In particular, when the present invention is used for a ball nut having a ball groove formed in the circumferential direction of the inner surface, high frequency quenching of the ball nut, which has been impossible until now, can be performed to the same degree as carburizing quenching. .
【００３１】また、本発明に係る高周波焼入方法は、内
面の円周方向に溝が形成されたワークを高周波加熱する
高周波加熱方法であって、ワークの内面と対向する加熱
導体部が前記溝となす角度を４５°以上１３５°以下で
ある高周波加熱コイルを用いることを特徴としている。Further, the high frequency quenching method according to the present invention is a high frequency heating method for high frequency heating a work having a groove formed in the inner surface in a circumferential direction, wherein the heating conductor portion facing the inner surface of the work has the groove. And a high-frequency heating coil having an angle of 45 ° or more and 135 ° or less is used.
【００３２】この方法によると、溝の山部と谷部とに均
一な硬化層を形成することができ、特に、内面の円周方
向にボール溝が形成されたボールナットに用いると今ま
では、不可能であったボールナットの高周波焼入を浸炭
焼入と遜色ない程度に実施することが可能となる。According to this method, a uniform hardened layer can be formed at the crests and valleys of the groove. Particularly, when the method is used for a ball nut having a ball groove formed on the inner surface in the circumferential direction, the conventional method can be used. In addition, the induction hardening of the ball nut, which was impossible, can be performed to the same degree as the case of carburizing.
【図１】本発明の第１の実施の形態に係る高周波加熱コ
イルの概略的斜視図である。FIG. 1 is a schematic perspective view of a high-frequency heating coil according to a first embodiment of the present invention.
【図２】本発明の第１の実施の形態に係る高周波加熱コ
イルの加熱導体部を説明するための概略的斜視図であ
る。FIG. 2 is a schematic perspective view for explaining a heating conductor of the high-frequency heating coil according to the first embodiment of the present invention.
【図３】本発明の第１の実施の形態に係る高周波加熱コ
イルの加熱導体部がボール溝（溝）となす角度を説明す
る概略的説明図である。FIG. 3 is a schematic explanatory diagram illustrating an angle formed by a heating conductor portion of a high-frequency heating coil and a ball groove (groove) according to the first embodiment of the present invention.
【図４】本発明の第１の実施の形態に係る高周波加熱コ
イルの概略的平面図である。FIG. 4 is a schematic plan view of the high-frequency heating coil according to the first embodiment of the present invention.
【図５】本発明の第２の実施の形態に係る高周波加熱コ
イルの概略的斜視図である。FIG. 5 is a schematic perspective view of a high-frequency heating coil according to a second embodiment of the present invention.
【図６】本発明の第２の実施の形態に係る高周波加熱コ
イルの加熱導体部を説明するための概略的斜視図であ
る。FIG. 6 is a schematic perspective view for explaining a heating conductor of a high-frequency heating coil according to a second embodiment of the present invention.
【図７】本発明の第２の実施の形態に係る高周波加熱コ
イルの概略的平面図である。FIG. 7 is a schematic plan view of a high-frequency heating coil according to a second embodiment of the present invention.
【図８】本発明の第３の実施の形態に係る高周波加熱コ
イルの概略的斜視図である。FIG. 8 is a schematic perspective view of a high-frequency heating coil according to a third embodiment of the present invention.
【図９】本発明の第１及び第２の実施の形態に係る高周
波加熱コイルでボールナットのボール溝への高周波焼入
で得られた硬化層と他の例とを比較する概略的断面図で
ある。FIG. 9 is a schematic cross-sectional view comparing a hardened layer obtained by induction hardening into a ball groove of a ball nut with the high-frequency heating coil according to the first and second embodiments of the present invention and another example. It is.
【図１０】従来のこの種の高周波加熱コイルの概略的斜
視図である。FIG. 10 is a schematic perspective view of a conventional high-frequency heating coil of this type.
１０００ 高周波加熱コイル １１０Ａ、１１０Ｂ 加熱導体部 Ｗ ボールナット（内面の円周方向に溝が形成
されたワーク） Ｗ１ ボール溝（溝）1000 High-frequency heating coil 110A, 110B Heating conductor W Ball nut (work with groove formed in the inner surface in the circumferential direction) W1 Ball groove (groove)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤沢 元一 大阪府八尾市老原４−16 富士電子工業株 式会社内 (72)発明者 新立 英雄 大阪府八尾市老原４−16 富士電子工業株 式会社内 Ｆターム(参考） 3K059 AA09 AA10 AB22 AC72 AD05 CD52 CD73 4K042 AA25 DA01 DB01 EA03 ──────────────────────────────────────────────────続 き Continued on the front page (72) Genichi Fujisawa, Inventor 4-16 Ohara, Yao City, Osaka Prefecture Inside Fuji Electronics Industry Co., Ltd. (72) Inventor Hideo 4-16, Ohara, Yao City, Osaka Fuji Electronics F term in industrial company (reference) 3K059 AA09 AA10 AB22 AC72 AD05 CD52 CD73 4K042 AA25 DA01 DB01 EA03
Claims (4)
を高周波加熱する高周波加熱コイルにおいて、ワークの
内面と対向する加熱導体部が前記溝となす角度を４５°
以上１３５°以下としたことを特徴とする高周波加熱コ
イル。1. A high-frequency heating coil for high-frequency heating a work having a groove formed in a circumferential direction on an inner surface, wherein an angle between a heating conductor portion facing the inner surface of the work and the groove is 45 °.
A high-frequency heating coil having an angle of 135 ° or less.
溝が形成されたボールナットであることを特徴とする請
求項１記載の高周波加熱コイル。2. The high-frequency heating coil according to claim 1, wherein the workpiece is a ball nut having a ball groove formed in a circumferential direction on an inner surface.
を高周波加熱する高周波加熱方法において、ワークの内
面と対向する加熱導体部が前記溝となす角度を４５°以
上１３５°以下である高周波加熱コイルを用いることを
特徴とする高周波焼入方法。3. A high-frequency heating method for high-frequency heating a work in which a groove is formed in a circumferential direction of an inner surface, wherein an angle between a heating conductor portion facing the inner surface of the work and the groove is 45 ° or more and 135 ° or less. An induction hardening method characterized by using an induction heating coil.
溝が形成されたボールナットであることを特徴とする請
求項３記載の高周波焼入方法。4. The induction hardening method according to claim 3, wherein the work is a ball nut having a ball groove formed in a circumferential direction on an inner surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35394299A JP2001172716A (en) | 1999-12-17 | 1999-12-14 | High frequency induction heating coil and high frequency induction hardening method |
| US09/735,628 US20010004631A1 (en) | 1999-12-17 | 2000-12-14 | Working fluid, working process using the working fluid, and method of production of the working fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35394299A JP2001172716A (en) | 1999-12-17 | 1999-12-14 | High frequency induction heating coil and high frequency induction hardening method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001172716A true JP2001172716A (en) | 2001-06-26 |
Family
ID=18434261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35394299A Pending JP2001172716A (en) | 1999-12-17 | 1999-12-14 | High frequency induction heating coil and high frequency induction hardening method |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20010004631A1 (en) |
| JP (1) | JP2001172716A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010180444A (en) * | 2009-02-04 | 2010-08-19 | Fuji Electronics Industry Co Ltd | High frequency induction-hardening apparatus for helical gear |
| JP2013170287A (en) * | 2012-02-20 | 2013-09-02 | Neturen Co Ltd | Heating coil and heating device equipped with the same |
| JP2014072143A (en) * | 2012-10-01 | 2014-04-21 | Yutaka Electronics Industry Co Ltd | Sleeve heating device |
| US10616960B2 (en) | 2014-08-05 | 2020-04-07 | Neturen Co., Ltd. | Heating coil |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5065197B2 (en) * | 2008-07-31 | 2012-10-31 | 株式会社ノリタケカンパニーリミテド | Vitrified grinding wheel |
| US10685863B2 (en) | 2018-04-27 | 2020-06-16 | Semiconductor Components Industries, Llc | Wafer thinning systems and related methods |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2800457A (en) * | 1953-06-30 | 1957-07-23 | Ncr Co | Oil-containing microscopic capsules and method of making them |
| US5346738A (en) * | 1992-11-04 | 1994-09-13 | X-Cal Corporation | Identification label with micro-encapsulated etchant |
| US5792728A (en) * | 1994-09-30 | 1998-08-11 | Hughes Electronics Corporation | Coolant/lubricant for machine operations |
| US5800104A (en) * | 1996-04-12 | 1998-09-01 | Miyano; Toshiharu Tom | Liquid coolant/lubricant recovery system for machine tools |
| US5876266A (en) * | 1997-07-15 | 1999-03-02 | International Business Machines Corporation | Polishing pad with controlled release of desired micro-encapsulated polishing agents |
| US6293851B1 (en) * | 1998-11-06 | 2001-09-25 | Beaver Creek Concepts Inc | Fixed abrasive finishing method using lubricants |
-
1999
- 1999-12-14 JP JP35394299A patent/JP2001172716A/en active Pending
-
2000
- 2000-12-14 US US09/735,628 patent/US20010004631A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010180444A (en) * | 2009-02-04 | 2010-08-19 | Fuji Electronics Industry Co Ltd | High frequency induction-hardening apparatus for helical gear |
| JP2013170287A (en) * | 2012-02-20 | 2013-09-02 | Neturen Co Ltd | Heating coil and heating device equipped with the same |
| JP2014072143A (en) * | 2012-10-01 | 2014-04-21 | Yutaka Electronics Industry Co Ltd | Sleeve heating device |
| US10616960B2 (en) | 2014-08-05 | 2020-04-07 | Neturen Co., Ltd. | Heating coil |
Also Published As
| Publication number | Publication date |
|---|---|
| US20010004631A1 (en) | 2001-06-21 |
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