JPH0533496U - Semi-open type high frequency heating coil for stepped shaft - Google Patents
Semi-open type high frequency heating coil for stepped shaftInfo
- Publication number
- JPH0533496U JPH0533496U JP089655U JP8965591U JPH0533496U JP H0533496 U JPH0533496 U JP H0533496U JP 089655 U JP089655 U JP 089655U JP 8965591 U JP8965591 U JP 8965591U JP H0533496 U JPH0533496 U JP H0533496U
- Authority
- JP
- Japan
- Prior art keywords
- heating conductor
- heating
- conductor
- face
- shaft portion
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 308
- 239000004020 conductor Substances 0.000 claims abstract description 289
- 230000002093 peripheral effect Effects 0.000 claims description 20
- 230000006698 induction Effects 0.000 abstract 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
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
- General Induction Heating (AREA)
Abstract
(57)【要約】
【目的】 軸部と、軸部より大径の段部を有する段付シ
ャフトの、軸部と段部の交叉部分に、高周波焼入によっ
て形成した硬化層は、その他の部分に形成した硬化層と
同じ深さになるような加熱コイルを提供する。
【構成】 加熱コイル100 は、段付シャフトの平面視外
形形状に対応した加熱導体101 〜103 および105 〜111
と、軸部と段部の交叉部分に対向した加熱導体104 を備
えている。
(57) [Abstract] [Purpose] A hardened layer formed by induction hardening at the intersection of the shaft and the step of a stepped shaft having a shaft and a step having a diameter larger than that of the shaft The heating coil is provided so as to have the same depth as the hardened layer formed on the portion. [Constitution] The heating coil 100 comprises heating conductors 101 to 103 and 105 to 111 corresponding to the plan view external shape of the stepped shaft.
And a heating conductor 104 facing the intersection of the shaft and the step.
Description
【０００１】[0001]
本考案は段付シャフト用半開放型高周波加熱コイルに関する。 The present invention relates to a semi-open type high frequency heating coil for a stepped shaft.
【０００２】[0002]
以下、図面を参照して従来の技術を説明する。図４〜６および７〜９は、それ ぞれ、第１および第２の従来の段付シャフト用高周波加熱コイル（以下高周波加 熱コイルを単に加熱コイルと記す) を説明するための図面であって、図４、７は 加熱コイルの模式的斜視図、図５、８は段付シャフトの斜視図、図６、９は段付 シャフトの縦断面図である。 Hereinafter, a conventional technique will be described with reference to the drawings. 4 to 6 and 7 to 9 are drawings for explaining first and second conventional high-frequency heating coils for stepped shafts (hereinafter, the high-frequency heating coil will be simply referred to as a heating coil). 4 and 7 are schematic perspective views of the heating coil, FIGS. 5 and 8 are perspective views of the stepped shaft, and FIGS. 6 and 9 are vertical sectional views of the stepped shaft.
【０００３】 図５に示すように、段付シャフト50は、周面54、周面54の一方側の第１底面55 、および第１底面55より大径の他方側の第２底面56を有するほぼ円錐台形状の段 部53と、第１底面55に突設され第１底面55と同径の第１軸部51と、第２底面56に 突設され第２底面56より小径の第２軸部52とを備えている。As shown in FIG. 5, the stepped shaft 50 has a peripheral surface 54, a first bottom surface 55 on one side of the peripheral surface 54, and a second bottom surface 56 on the other side having a diameter larger than that of the first bottom surface 55. A substantially frustoconical step portion 53, a first shaft portion 51 projecting from the first bottom surface 55 and having the same diameter as the first bottom surface 55, and a second shaft portion projecting from the second bottom surface 56 and having a smaller diameter than the second bottom surface 56. And a shaft portion 52.
【０００４】 図４に示す加熱コイル300 は、電源供給導体300a、300bの間に直列に接続され た加熱導体301 〜311 を有し、加熱導体302 〜305 および307 〜310 は段付シャ フト50の平面視における外形形状に対応した形状に形成されている。The heating coil 300 shown in FIG. 4 has heating conductors 301 to 311 connected in series between power supply conductors 300a and 300b, and the heating conductors 302 to 305 and 307 to 310 are stepped shafts 50. Is formed in a shape corresponding to the outer shape in plan view.
【０００５】 加熱コイル300 の加熱導体301 、302 、310 、311 を段付シャフト50の軸部51 に、加熱導体303 、309 を周面54に、加熱導体304 、308 を第２底面56に、加熱 導体305 〜307 を第２軸部52に、それぞれ、対向するように配設してから、段付 シャフト50をその軸50a を中心として回転しながら、加熱コイル300 に高周波電 流を所定時間通電後、段付シャフト50を冷却すると、図６に示す硬化層71が形成 される。The heating conductors 301, 302, 310, 311 of the heating coil 300 are provided on the shaft portion 51 of the stepped shaft 50, the heating conductors 303, 309 are provided on the peripheral surface 54, and the heating conductors 304, 308 are provided on the second bottom surface 56. After arranging the heating conductors 305 to 307 on the second shaft portion 52 so as to face each other, a high frequency current is applied to the heating coil 300 for a predetermined time while rotating the stepped shaft 50 around the shaft 50a. When the stepped shaft 50 is cooled after the power is turned on, the hardened layer 71 shown in FIG. 6 is formed.
【０００６】 図８に示すように、段付シャフト60は、周面64、周面64の一方側の第１底面65 、および第１底面65と同径の他方側の第２底面66を有する円柱形状の段部63と、 第１底面65に突設され第１底面65より小径の第１軸部61と、第２底面66に突設さ れ第２底面66より小径の第２軸部62とを備えている。As shown in FIG. 8, the stepped shaft 60 has a peripheral surface 64, a first bottom surface 65 on one side of the peripheral surface 64, and a second bottom surface 66 on the other side having the same diameter as the first bottom surface 65. A cylindrical step portion 63, a first shaft portion 61 projecting from the first bottom surface 65 and having a smaller diameter than the first bottom surface 65, and a second shaft portion projecting from the second bottom surface 66 and having a smaller diameter than the second bottom surface 66. 62 and.
【０００７】 図７に示す加熱コイル400 は、電源供給導体400a、400bの間に直列に接続され た加熱導体401 〜413 を有し、加熱導体402 〜406 および408 〜412 は、段付シ ャフト60の平面視における外形形状に対応した形状に形成されている。The heating coil 400 shown in FIG. 7 has heating conductors 401 to 413 connected in series between power supply conductors 400a and 400b, and the heating conductors 402 to 406 and 408 to 412 are stepped shafts. It is formed in a shape corresponding to the outer shape of 60 in plan view.
【０００８】 加熱コイル400 の加熱導体401 、402 、412 、413 を段付シャフト60の第１軸 部61に、加熱導体403 、411 を第１底面65に、加熱導体404 、410 を周面64に、 加熱導体405 、409 を第２底面66に、加熱導体406 〜408 を第２軸部62に、それ ぞれ、対向するように配設してから、段付シャフト60をその軸60a を中心として 回転しながら、加熱コイル400 に高周波電流を所定時間通電後、段付シャフト60 を冷却すると、図９に示す硬化層72が形成される。The heating conductors 401, 402, 412, 413 of the heating coil 400 are provided on the first shaft portion 61 of the stepped shaft 60, the heating conductors 403, 411 are provided on the first bottom surface 65, and the heating conductors 404, 410 are provided on the peripheral surface 64. Then, the heating conductors 405 and 409 are arranged on the second bottom surface 66, and the heating conductors 406 to 408 are arranged on the second shaft portion 62 so as to face each other, and then the stepped shaft 60 is mounted on the shaft 60a. When the stepped shaft 60 is cooled after passing a high frequency current through the heating coil 400 for a predetermined time while rotating around the center, the hardened layer 72 shown in FIG. 9 is formed.
【０００９】[0009]
しかしながら、上記のような加熱コイル300 と400 でそれぞれ段付シャフト50 と60を焼入した場合には、次のような問題がある。即ち、図６に示すように、段 付シャフト50の底面56と第２軸部52との交叉部分59の硬化層71は、他の部分の硬 化層71より浅く形成されている。また、図９に示すように、段付シャフト60の第 １底面65と第１軸部51との交叉部分68および第２底面66と第２軸部62の交叉部分 69の硬化層72は、他の部分の硬化層72より浅く形成されている。 However, when the stepped shafts 50 and 60 are respectively quenched by the heating coils 300 and 400 as described above, there are the following problems. That is, as shown in FIG. 6, the hardened layer 71 at the intersection 59 of the bottom surface 56 of the stepped shaft 50 and the second shaft portion 52 is formed to be shallower than the hardened layer 71 at the other portions. Further, as shown in FIG. 9, the hardened layer 72 at the intersection portion 68 of the first bottom surface 65 of the stepped shaft 60 and the first shaft portion 51 and at the intersection portion 69 of the second bottom surface 66 and the second shaft portion 62 is It is formed shallower than the hardened layer 72 of the other part.
【００１０】 本考案は上記事情に鑑みて創案されたものであって、軸部の間に段部を有する 段付シャフトを焼入して硬化層を形成するにあたり、段部と軸部の交叉部分の硬 化層の深さを、その他の部分の硬化層の深さと同じに形成することができる段付 シャフト用高周波加熱コイル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 in quenching a stepped shaft having a stepped portion between shaft portions to form a hardened layer, the stepped portion and the shaft portion are crossed. An object of the present invention is to provide a high-frequency heating coil for a stepped shaft, in which the depth of the hardened layer in the part can be formed to be the same as the depth of the hardened layer in the other part.
【００１１】[0011]
【課題を解決するための手段】 上記問題を解決するために、請求項１記載の段付シャフト用加熱コイルは、周 面、周面の一方側の第１底面および第１底面より大径の他方側の第２底面を有す るほぼ円錐台形状の段部と、第１底面に突設され第１底面と同径の第１軸部と、 第２底面に突設され第２底面より小径の第２軸部とを備えた段付シャフト用半開 放型高周波加熱コイルにおいて、一端が一方の電源供給導体に接続され、第２軸 部の軸方向に平行で第２軸部に対向するように配設された直線状の第１加熱導体 と、一端が第１加熱導体の他端に接続され、第２軸部の周方向に配設された円弧 状の第２加熱導体と、一端が第２加熱導体の他端に接続され、第１加熱導体と同 形で第１加熱導体と対向するように配設された第３加熱導体と、一端が第３加熱 導体の他端に接続され、第２軸部と段部の交叉部分に対向するように配設された 円弧状の第４加熱導体と、一端が第４加熱導体の他端に接続され、第２底面に対 向するように段付シャフトの軸方向と直角方向に且つ段付シャフトの軸から遠ざ かる方向に配設された直線状の第５加熱導体とを備えている。In order to solve the above problems, a heating coil for a stepped shaft according to claim 1 has a circumferential surface, a first bottom surface on one side of the circumferential surface, and a diameter larger than that of the first bottom surface. A substantially frustoconical step having a second bottom surface on the other side, a first shaft portion projecting from the first bottom surface and having the same diameter as the first bottom surface, and a second shaft projecting from the second bottom surface. In a semi-open type high frequency heating coil for a stepped shaft having a small-diameter second shaft portion, one end is connected to one power supply conductor and is parallel to the axial direction of the second shaft portion and faces the second shaft portion. A linear first heating conductor arranged in such a manner that one end is connected to the other end of the first heating conductor, and an arc-shaped second heating conductor is arranged in the circumferential direction of the second shaft portion, and one end. A third heating conductor connected to the other end of the second heating conductor and having the same shape as the first heating conductor and arranged to face the first heating conductor; An arc-shaped fourth heating conductor whose end is connected to the other end of the third heating conductor and is arranged so as to face the intersection of the second shaft portion and the step portion, and one end of which is the other end of the fourth heating conductor. And a linear fifth heating conductor that is disposed in a direction perpendicular to the axial direction of the stepped shaft and faces away from the axis of the stepped shaft so as to face the second bottom surface. There is.
【００１２】 また、この加熱コイルは、一端が第５加熱導体の他端に接続され、前記周面の 稜線に対向するように配設された直線状の第６加熱導体と、一端が第６加熱導体 の他端に接続され、第１軸部の軸方向に平行で第１軸部に対向するように配設さ れた直線状の第７加熱導体と、一端が第７加熱導体の他端に接続され、第２軸部 の周方向に配設された円弧状の第８導体と、一端が第８導体の他端に接続され、 第７加熱導体と同形で第７加熱導体と対向するように配設された第９加熱導体と 、一端が第９加熱導体の他端に接続され、第６加熱導体と同形で第６加熱導体と 対向するように配設された第10加熱導体と、一端が第10加熱導体110 の他端に接 続され、第５加熱導体と同形で第５加熱導体と対向するように配設され、他端が 他方の電源供給導体に接続された第11加熱導体とを備え、第１〜第11加熱導体は 直列に接続されている。Further, the heating coil has one end connected to the other end of the fifth heating conductor and a linear sixth heating conductor arranged so as to face the ridgeline of the peripheral surface, and one end of the sixth heating conductor. A linear seventh heating conductor which is connected to the other end of the heating conductor and which is arranged parallel to the axial direction of the first shaft portion so as to face the first shaft portion, and one end of the seventh heating conductor An arc-shaped eighth conductor which is connected to the end and is arranged in the circumferential direction of the second shaft portion, and one end of which is connected to the other end of the eighth conductor and which has the same shape as the seventh heating conductor and faces the seventh heating conductor. And a tenth heating conductor having one end connected to the other end of the ninth heating conductor and having the same shape as the sixth heating conductor and facing the sixth heating conductor. And one end thereof is connected to the other end of the tenth heating conductor 110, is arranged so as to have the same shape as the fifth heating conductor and faces the fifth heating conductor, and the other end thereof is the other. 11 and a heating conductor connected to a power supply conductor, the first to eleventh heating conductors are connected in series.
【００１３】 請求項２記載の加熱コイルは、周面、周面の一方側の第１底面、および第１底 面と同径の他方側の第２底面を有する円柱形状の段部と、第１底面に突設され第 １底面より小径の第１軸部と、第２底面に突設され第２底面より小径の第２軸部 とを備えた段付シャフト用高周波加熱コイルにおいて、一端が一方の電源供給導 体に接続され、第１軸部の周方向に配設された円弧状の第１加熱導体と、一端が 第１加熱導体の他端に接続され、第１軸部に平行で第１軸部に対向するように配 設された直線状の第２加熱導体と、一端が第２加熱導体の他端に接続され、第１ 底面に対向するように段付シャフトの軸方向と直角方向に且つ段付シャフトの軸 から遠ざかる方向に配設された直線状の第３加熱導体と、一端が第３加熱導体の 他端に接続され、第１軸部と段部との交叉部分に対向するように配設された円弧 状の第４加熱導体と、一端が第４加熱導体の他端に接続され、前記周面に対向す るように段付シャフトの軸方向に配設された直線状の第５加熱導体とを備えてい る。A heating coil according to a second aspect of the present invention includes a cylindrical step portion having a peripheral surface, a first bottom surface on one side of the peripheral surface, and a second bottom surface on the other side having the same diameter as the first bottom surface, In one stepped high-frequency heating coil for a stepped shaft, the first shaft part protruding from the bottom face and having a diameter smaller than that of the first bottom face, and the second shaft part protruding from the second bottom face and having a diameter smaller than that of the second bottom face. An arc-shaped first heating conductor that is connected to one of the power supply conductors and is arranged in the circumferential direction of the first shaft portion, and one end of the first heating conductor is connected to the other end of the first heating conductor and is parallel to the first shaft portion. And a linear second heating conductor arranged so as to face the first shaft portion, and one end of the second heating conductor is connected to the other end of the second heating conductor, and the axial direction of the stepped shaft faces the first bottom surface. A linear third heating conductor arranged in a direction perpendicular to the stepped shaft and away from the axis of the stepped shaft; An arc-shaped fourth heating conductor that is connected to the end and is disposed so as to face the intersection of the first shaft portion and the step portion, and one end is connected to the other end of the fourth heating conductor, and the peripheral surface is And a linear fifth heating conductor which is arranged in the axial direction of the stepped shaft so as to face the above.
【００１４】 また、この加熱コイルは、一端が第５加熱導体の他端に接続され、第４加熱導 体と同形で第４加熱導体と対向するように配設された第６加熱導体と、一端が第 ６加熱導体の他端に接続され、第３加熱導体と同形で第３加熱導体と対向するよ うに配設された第７加熱導体と、一端が第７加熱導体の他端に接続され、第２軸 部に平行で第２軸部に対向するように配設された直線状の第８加熱導体と、一端 が第８加熱導体の他端に接続され、第２軸部の周方向に配設された円弧状の第９ 加熱導体と、一端が第９加熱導体の他端に接続され、第８加熱導体と同形で第８ 加熱導体と対向するように配設された第10加熱導体とを備えている。The heating coil has one end connected to the other end of the fifth heating conductor, the sixth heating conductor having the same shape as the fourth heating conductor and arranged to face the fourth heating conductor, A seventh heating conductor having one end connected to the other end of the sixth heating conductor and having the same shape as the third heating conductor and arranged to face the third heating conductor, and one end connected to the other end of the seventh heating conductor. And a linear eighth heating conductor which is arranged parallel to the second shaft portion so as to face the second shaft portion, and one end of which is connected to the other end of the eighth heating conductor, and the circumference of the second shaft portion is A circular arc-shaped ninth heating conductor and a tenth one having one end connected to the other end of the ninth heating conductor and having the same shape as the eighth heating conductor and facing the eighth heating conductor. And a heating conductor.
【００１５】 更に、この加熱コイルは、一端が第10加熱導体の他端に接続され、第７加熱導 体と同形で第７加熱導体と対向するように配設された第11加熱導体と、一端が第 11加熱導体の他端に接続され、第５加熱導体と同形で第５加熱導体と対向するよ うに配設された第12加熱導体と、一端が第12加熱導体の他端に接続され、第11加 熱導体と同形で第11加熱導体と対向するように配設された第13加熱導体と、一端 が第13加熱導体の他端に接続され、第２加熱導体と同形で第２加熱導体と対向す るように配設された第14加熱導体と、一端が第14加熱導体の他端に他端が他方の 電源供給導体にそれぞれ接続され、第１加熱導体と同形で第１加熱導体に対向す るように配設された第15加熱導体とを備え、第１〜第15加熱導体は直列に接続さ れている。Further, the heating coil has one end connected to the other end of the tenth heating conductor, and an eleventh heating conductor having the same shape as the seventh heating conductor and arranged so as to face the seventh heating conductor, A twelfth heating conductor having one end connected to the other end of the eleventh heating conductor and having the same shape as the fifth heating conductor and arranged to face the fifth heating conductor, and one end connected to the other end of the twelfth heating conductor. A thirteenth heating conductor having the same shape as the eleventh heating conductor and arranged so as to face the eleventh heating conductor, and one end of which is connected to the other end of the thirteenth heating conductor and has the same shape as the second heating conductor. The 14th heating conductor is disposed so as to face the 2nd heating conductor, and one end is connected to the other end of the 14th heating conductor and the other end is connected to the other power supply conductor. The fifteenth heating conductor is disposed so as to face the first heating conductor, and the first to fifteenth heating conductors are connected in series.
【００１６】[0016]
以下、図面を参照して請求項１記載の加熱コイルの一実施例を説明する。図１ 〜２は本実施例を説明するための図面であって、図１は模式的斜視図、図２は加 熱コイルの要部およびワークの一部の断面図である。なお、本実施例ではワーク として図５で説明した段付シャフト50を採り上げた。 An embodiment of the heating coil according to claim 1 will be described below with reference to the drawings. 1 and 2 are drawings for explaining the present embodiment, FIG. 1 is a schematic perspective view, and FIG. 2 is a sectional view of a main part of a heating coil and a part of a work. In this embodiment, the stepped shaft 50 described in FIG. 5 is used as the work.
【００１７】 本実施例の加熱コイル100 は、電源供給導体100a、100bの間に、直列に接続さ れた第１加熱導体101 〜第11加熱導体111 を備えている。詳細に説明すると、加 熱コイル100 は、一端が一方の電源供給導体100aに接続され、第２軸部52の軸方 向に平行で第２軸部52に対向するように配設された直線状の第１加熱導体101 と 、一端が第１加熱導体101 の他端に接続され、第２軸部52の周方向に配設された 円弧状の第２加熱導体102 一端が第２加熱導体102 の他端に接続され、第１加熱 導体101 と同形で第１加熱導体に対向するように配設された第３加熱導体103 と を備えている。The heating coil 100 of the present embodiment is provided with the first heating conductor 101 to the eleventh heating conductor 111 connected in series between the power supply conductors 100a and 100b. More specifically, the heating coil 100 has a straight line whose one end is connected to one of the power supply conductors 100a and which is parallel to the axial direction of the second shaft portion 52 and faces the second shaft portion 52. -Shaped first heating conductor 101, one end thereof is connected to the other end of the first heating conductor 101, and the arc-shaped second heating conductor 102 is arranged in the circumferential direction of the second shaft portion 52. One end is the second heating conductor. The third heating conductor 103 is connected to the other end of the second heating conductor 102 and has the same shape as the first heating conductor 101 and is arranged so as to face the first heating conductor.
【００１８】 また、加熱コイル100 は、一端が第３加熱導体103 の他端に接続され、第２軸 部52と段部53の交叉部分59に対向するように配設された円弧状の第４加熱導体10 4 と、一端が第４加熱導体104 の他端に接続され、第２底面56に対向するように 段付シャフト100 の軸方向と直角方向に且つ段付シャフト100 の軸50a から遠ざ かる方向に配設された直線状の第５加熱導体105 と、一端が第５加熱導体105 の 他端に接続され、周面54の稜線に対向するように配設された直線状の第６加熱導 体106 と、一端が第６加熱導体106 の他端に接続され、第１軸部51の軸方向に平 行で第１軸部51に対向するように配設された直線状の第７加熱導体107 と、 一端が第７加熱導体107 の他端に接続され、第１軸部52の周方向に配設された円 弧状の第８導体108 とを備えている。The heating coil 100 has one end connected to the other end of the third heating conductor 103 and an arc-shaped first coil arranged so as to face the intersecting portion 59 of the second shaft portion 52 and the step portion 53. 4 heating conductor 104, one end of which is connected to the other end of the fourth heating conductor 104 and which faces the second bottom surface 56 in a direction perpendicular to the axial direction of the stepped shaft 100 and from the axis 50a of the stepped shaft 100. A linear fifth heating conductor 105 arranged in a direction away from the other, and a linear fifth heating conductor 105 having one end connected to the other end of the fifth heating conductor 105 and arranged to face the ridgeline of the peripheral surface 54. A sixth heating conductor 106 and a linear shape, one end of which is connected to the other end of the sixth heating conductor 106 and which is arranged so as to be parallel to the first shaft portion 51 in the axial direction and to face the first shaft portion 51. Of the seventh heating conductor 107 and an arc-shaped eighth conductor 108 having one end connected to the other end of the seventh heating conductor 107 and arranged in the circumferential direction of the first shaft portion 52. It
【００１９】 更に、加熱コイル100 は、一端が第８導体108 の他端に接続され、第７加熱導 体107 と同形で第７加熱導体と対向するように配設された第９加熱導体109 と、 一端が第９加熱導体109 の他端に接続され、第６加熱導体106 と同形で第６加熱 導体106 と対向するように配設された第10加熱導体110 と、一端が第10加熱導体 110 の他端に接続され、第５加熱導体105 と同形で第５加熱導体105 と対向する ように配設され、他端が他方の電源供給導体100bに接続された直線状の第11加熱 導体111 とを備えている。Further, the heating coil 100 has one end connected to the other end of the eighth conductor 108 and has the same shape as the seventh heating conductor 107 and is disposed so as to face the seventh heating conductor 109. And a tenth heating conductor 110 having one end connected to the other end of the ninth heating conductor 109 and having the same shape as the sixth heating conductor 106 and facing the sixth heating conductor 106, and one end of the tenth heating conductor 110. A linear eleventh heating element connected to the other end of the conductor 110 and having the same shape as the fifth heating conductor 105 and arranged so as to face the fifth heating conductor 105 and has the other end connected to the other power supply conductor 100b. And a conductor 111.
【００２０】 ここで、加熱導体104 の断面構造について説明する。図２に示すように、断面 視における加熱導体104 の先端104dは、段部53の第２底面56と第２軸部52との交 叉部分59に対向するように配設される。先端104dの両側部分104a、104bは、それ ぞれ、第２軸部52の軸方向および第２底面56にほぼ平行であるように形成されて いる。なお、104cは、加熱導体104 の中空部分であって、加熱コイル100 の冷却 液が流通する。Here, the sectional structure of the heating conductor 104 will be described. As shown in FIG. 2, the tip 104d of the heating conductor 104 in a cross-sectional view is arranged so as to face the intersection 59 of the second bottom surface 56 of the stepped portion 53 and the second shaft portion 52. Both side portions 104a and 104b of the tip 104d are formed so as to be substantially parallel to the axial direction of the second shaft portion 52 and the second bottom surface 56, respectively. Incidentally, 104c is a hollow portion of the heating conductor 104, through which the cooling liquid of the heating coil 100 flows.
【００２１】 次に、本実施例の動作を説明する。加熱導体101 〜103 を第２軸部52に、加熱 導体106 、110 を段部53の周面54に、加熱導体105 、111 を段部53の第２底面56 に、加熱導体107 〜109 を第１軸部51に、それぞれ、対向するように配設してか ら、段付シャフト50を軸50a を中心として回転させながら、加熱コイル100 に所 定時間高周波電流を通電後、段付シャフト50を冷却すると、第１軸部51、第２軸 部52、段部53の表面および段部53と第２軸部52の交叉部分59にわたって均一な深 さの硬化層が形成される。Next, the operation of this embodiment will be described. The heating conductors 101 to 103 are attached to the second shaft portion 52, the heating conductors 106 and 110 to the peripheral surface 54 of the step portion 53, the heating conductors 105 and 111 to the second bottom surface 56 of the step portion 53, and the heating conductors 107 to 109. After the stepped shafts 50 are arranged so as to face each other on the first shaft portions 51, the stepped shaft 50 is rotated about the axis 50a, and a high frequency current is applied to the heating coil 100 for a predetermined time. When 50 is cooled, a hardened layer having a uniform depth is formed over the surfaces of the first shaft portion 51, the second shaft portion 52, the step portion 53, and the intersection portion 59 between the step portion 53 and the second shaft portion 52.
【００２２】 次いで、請求項２記載の高周波加熱コイルの一実施例を説明する。図３は、こ のコイルの模式的斜視図である。ワークとしては、図８で説明した段付シャフト 60を採り上げた。本実施例の加熱コイル200 は、電源供給導体200a、200bの間に 、直列に接続された加熱導体201 〜215 を備えている。Next, an embodiment of the high frequency heating coil according to claim 2 will be described. FIG. 3 is a schematic perspective view of this coil. As the work, the stepped shaft 60 explained in FIG. 8 is adopted. The heating coil 200 of this embodiment includes heating conductors 201 to 215 connected in series between the power supply conductors 200a and 200b.
【００２３】 更に、詳しく説明すると、加熱コイル100 は、一端が一方の電源供給導体200a に接続され、段付シャフト60の第１軸部61の周方向に配設された円弧状の第１加 熱導体201 と、一端が第１加熱導体201 の他端に接続され、第１軸部61に平行で 対向するように配設された直線状の第２加熱導体202 と、一端が第２加熱導体20 2 の他端に接続され、第１底面65に対向するように段付シャフト60の軸方向と直 角方向に且つ段付シャフト60の軸60a から遠ざかる方向に配設された直線状の第 ３加熱導体203 と、一端が第３加熱導体203 の他端に接続され、第１軸部61と段 部63との交叉部分68に対向するように配設された円弧状の第４加熱導体204 と、 一端が第４加熱導体204 の他端に接続され、周面64に対向するように段付シャフ ト60の軸方向に配設された直線状の第５加熱導体205 とを備えている。More specifically, the heating coil 100 has one end connected to one of the power supply conductors 200a and a circular arc-shaped first addition member arranged in the circumferential direction of the first shaft portion 61 of the stepped shaft 60. The heat conductor 201, a linear second heating conductor 202, one end of which is connected to the other end of the first heating conductor 201 and which is arranged parallel to and facing the first shaft portion 61, and one end of the second heating conductor 202. A straight line which is connected to the other end of the conductor 20 2 and is arranged so as to face the first bottom surface 65 in a direction perpendicular to the axial direction of the stepped shaft 60 and away from the axis 60a of the stepped shaft 60. The third heating conductor 203, and one end of the third heating conductor 203 is connected to the other end of the third heating conductor 203, and the arc-shaped fourth heating is arranged so as to face the intersection 68 of the first shaft portion 61 and the step portion 63. The conductor 204 and one end thereof are connected to the other end of the fourth heating conductor 204, and are arranged in the axial direction of the stepped shaft 60 so as to face the peripheral surface 64. And a straight fifth heating conductor 205.
【００２４】 また、加熱コイル100 は、一端が第５加熱導体205 の他端に接続され、第４加 熱導体204 と同形で第４加熱導体204 と対向するように配設された第６加熱導体 206 と、一端が第６加熱導体206 の他端に接続され、第３加熱導体203 と同形で 第３加熱導体203 と対向するように配設された第７加熱導体207 と、一端が第７ 加熱導体207 の他端に接続され、第２軸部62に平行で対向するように配設された 直線状の第８加熱導体208 と、一端が第８加熱導体208 の他端に接続され、第２ 軸部62の周方向に配設された円弧状の第９加熱導体209 と、一端が第９加熱導体 209 の他端に接続され、第８加熱導体208 と同形で第８加熱導体208 と対向する ように配設された第10加熱導体210 とを備えている。The heating coil 100 has one end connected to the other end of the fifth heating conductor 205 and has the same shape as the fourth heating conductor 204 and is disposed so as to face the fourth heating conductor 204. A conductor 206, a seventh heating conductor 207, which has one end connected to the other end of the sixth heating conductor 206 and is arranged in the same shape as the third heating conductor 203 so as to face the third heating conductor 203, and one end of which is 7. A linear eighth heating conductor 208 which is connected to the other end of the heating conductor 207 and which is arranged parallel to and facing the second shaft portion 62, and one end of which is connected to the other end of the eighth heating conductor 208. , An arc-shaped ninth heating conductor 209 arranged in the circumferential direction of the second shaft portion 62, one end of which is connected to the other end of the ninth heating conductor 209 and which has the same shape as the eighth heating conductor 208 and the eighth heating conductor 208. And a tenth heating conductor 210 arranged so as to face 208.
【００２５】 更に、加熱コイル100 は、一端が第10加熱導体210 の他端に接続され、第７加 熱導体207 と同形で第７加熱導体207 と対向するように配設された第11加熱導体 と、一端が第11加熱導体211 の他端に接続され、第５加熱導体205 と同形で第５ 加熱導体205 と対向するように配設された第12加熱導体212 と、一端が第12加熱 導体212 の他端に接続され、第11加熱導体211 と同形で第11加熱導体201 と対向 するように配設された第13加熱導体213 と、一端が第13加熱導体213 の他端に接 続され、第２加熱導体202 と同形で第２加熱導体202 と対向するように配設され た第14加熱導体214 と、一端が第14加熱導体214 の他端に他端が他方の電源供給 導体200bにそれぞれ接続され、第１加熱導体201 と同形で第１加熱導体201 と対 向するように配設された第15加熱導体215 とを備えている。加熱導体204 および 206 の断面構造は、先に説明した加熱コイル100 の加熱導体104 の断面構造と同 じである。Furthermore, the heating coil 100 has one end connected to the other end of the tenth heating conductor 210, and the eleventh heating conductor arranged in the same shape as the seventh heating conductor 207 so as to face the seventh heating conductor 207. A conductor, a twelfth heating conductor 212 having one end connected to the other end of the eleventh heating conductor 211 and having the same shape as the fifth heating conductor 205 and facing the fifth heating conductor 205, and one end twelfth A thirteenth heating conductor 213 connected to the other end of the heating conductor 212 and having the same shape as the eleventh heating conductor 211 and arranged to face the eleventh heating conductor 201, and one end of the thirteenth heating conductor 213 to the other end. A fourteenth heating conductor 214 connected to the second heating conductor 202 and having the same shape as the second heating conductor 202 and facing the second heating conductor 202; A fifteenth heating conductor 215 connected to the supply conductors 200b and having the same shape as the first heating conductor 201 and arranged so as to face the first heating conductor 201. It has and. The sectional structure of the heating conductors 204 and 206 is the same as the sectional structure of the heating conductor 104 of the heating coil 100 described above.
【００２６】 次に、本実施例の動作について説明する。加熱コイル200 の加熱導体201 、20 2 、214 、215 を第１軸部61に、加熱導体204 を段部63と第１軸部61の交叉部分 68に、加熱導体206 を段部63と第２軸部62の交叉部分69に、加熱導体203 、213 を第１底面65に、加熱導体207 と211 を第２底面66に、加熱導体205 、212 を周 面64に、加熱導体208 〜210 を第２軸部62に、それぞれ、対向するように配設し てから、加熱コイル200 に高周波電流を所定時間通電後、段付シャフト60を冷却 すると、第１軸部61、段部63、第２軸部62、第１軸部61と段部63の交叉部分68、 および第２軸部62と段部63の交叉部分69にわたって均一な深さの硬化層が形成さ れる。Next, the operation of this embodiment will be described. The heating conductors 201, 202, 214, and 215 of the heating coil 200 are provided on the first shaft portion 61, the heating conductor 204 is provided on the intersection portion 68 of the step portion 63 and the first shaft portion 61, and the heating conductor 206 is provided on the step portion 63 and the first portion. The heating conductors 203 and 213 are provided on the first bottom surface 65, the heating conductors 207 and 211 are provided on the second bottom surface 66, the heating conductors 205 and 212 are provided on the peripheral surface 64, and the heating conductors 208 to 210 are provided on the intersection 69 of the biaxial portion 62. When the stepped shaft 60 is cooled after the high-frequency current is applied to the heating coil 200 for a predetermined time after arranging the first shaft portion 61 and the second shaft portion 62 so as to face each other, the first shaft portion 61, the step portion 63, A hardened layer having a uniform depth is formed over the second shaft portion 62, the intersection portion 68 of the first shaft portion 61 and the step portion 63, and the intersection portion 69 of the second shaft portion 62 and the step portion 63.
【００２７】[0027]
以上説明したように、軸部と、軸部より大径の段部を有する段付シャフトを加 熱する請求項１および２記載の加熱コイルは、それぞれ、軸部および段部に対応 する加熱導体を有すると共に、軸部と段部の交叉部分に対応した加熱導体を備え ている。従って、請求項１および２記載の加熱コイルによって段付シャフトを焼 入した場合、軸部と段部の交叉部分には、その他の部分に形成された硬化層と同 じ深さの硬化層を形成することができる。 As described above, the heating coil according to claim 1 and 2, which heats the shaft and the stepped shaft having the step having a diameter larger than that of the shaft, is the heating conductor corresponding to the shaft and the step, respectively. And a heating conductor corresponding to the intersection of the shaft and the step. Therefore, when the stepped shaft is hardened by the heating coil according to the first and second aspects, a hardened layer having the same depth as the hardened layer formed in the other part is formed at the intersection of the shaft and the step. Can be formed.
【図１】請求項１記載の加熱コイルの一実施例の模式的
斜視図である。FIG. 1 is a schematic perspective view of an embodiment of a heating coil according to claim 1.
【図２】請求項１記載の加熱コイルの一実施例の要部お
よび段付シャフトの一部の断面図である。FIG. 2 is a cross-sectional view of an essential part of an embodiment of the heating coil according to claim 1 and a part of a stepped shaft.
【図３】請求項２記載の加熱コイルの一実施例の模式的
斜視図である。FIG. 3 is a schematic perspective view of an embodiment of the heating coil according to claim 2;
【図４】第１例の従来の加熱コイルの模式的斜視図であ
る。FIG. 4 is a schematic perspective view of a conventional heating coil of a first example.
【図５】第１例の段付シャフトの斜視図である。FIG. 5 is a perspective view of a stepped shaft of the first example.
【図６】第１例の段付シャフトの縦断面図である。FIG. 6 is a vertical sectional view of a stepped shaft of a first example.
【図７】第２例の従来の加熱コイルの模式的斜視図であ
る。FIG. 7 is a schematic perspective view of a conventional heating coil of a second example.
【図８】第２例の段付シャフトの斜視図である。FIG. 8 is a perspective view of a stepped shaft of a second example.
【図９】第２例の段付シャフトの縦断面図である。FIG. 9 is a vertical sectional view of a stepped shaft of a second example.
51、61 第１軸部 52、62 第２軸部 53、63 段部 54、64 周面 55、65 第１底面 56、66 第２底面 100 、200 加熱コイル 101 〜111 、201 〜215 加熱導体 100a、100b、200a、200b 電源供給導体 51, 61 First shaft portion 52, 62 Second shaft portion 53, 63 Step portion 54, 64 Circumferential surface 55, 65 First bottom surface 56, 66 Second bottom surface 100, 200 Heating coil 101-111, 201-215 Heating conductor 100a, 100b, 200a, 200b Power supply conductor
Claims (2)
１底面より大径の他方側の第２底面を有するほぼ円錐台
形状の段部と、第１底面に突設され第１底面と同径の第
１軸部と、第２底面に突設され第２底面より小径の第２
軸部とを備えた段付シャフト用半開放型高周波加熱コイ
ルにおいて、 一端が一方の電源供給導体に接続され、第２軸部の軸方
向に平行で第２軸部に対向するように配設された直線状
の第１加熱導体と、 一端が第１加熱導体の他端に接続され、第２軸部の周方
向に配設された円弧状の第２加熱導体と、 一端が第２加熱導体の他端に接続され、第１加熱導体と
同形で第１加熱導体と対向するように配設された第３加
熱導体と、 一端が第３加熱導体の他端に接続され、第２軸部と段部
の交叉部分に対向するように配設された円弧状の第４加
熱導体と、 一端が第４加熱導体の他端に接続され、第２底面に対向
するように段付シャフトの軸方向と直角方向に且つ段付
シャフトの軸から遠ざかる方向に配設された直線状の第
５加熱導体と、 一端が第５加熱導体の他端に接続され、前記周面の稜線
に対向するように配設された直線状の第６加熱導体と、 一端が第６加熱導体の他端に接続され、第１軸部の軸方
向に平行で第１軸部に対向するように配設された直線状
の第７加熱導体と、 一端が第７加熱導体の他端に接続され、第２軸部の周方
向に配設された円弧状の第８導体と、 一端が第８導体の他端に接続され、第７加熱導体と同形
で第７加熱導体と対向するように配設された第９加熱導
体と、 一端が第９加熱導体の他端に接続され、第６加熱導体と
同形で第６加熱導体と対向するように配設された第10加
熱導体と、 一端が第10加熱導体の他端に接続され、第５加熱導体と
同形で第５加熱導体と対向するように配設され、他端が
他方の電源供給導体に接続された第11加熱導体とを備
え、 第１〜第11加熱導体は直列に接続されていることを特徴
とする段付シャフト用半開放型高周波加熱コイル。1. A substantially frustoconical step portion having a peripheral surface, a first bottom surface on one side of the peripheral surface, and a second bottom surface on the other side having a diameter larger than that of the first bottom surface, and a step portion projecting from the first bottom surface. A first shaft portion having the same diameter as the first bottom surface, and a second shaft portion protruding from the second bottom surface and having a smaller diameter than the second bottom surface.
A semi-open type high-frequency heating coil for a stepped shaft having a shaft portion, one end of which is connected to one of the power supply conductors and is arranged so as to be parallel to the axial direction of the second shaft portion and face the second shaft portion. A linear first heating conductor, one end of which is connected to the other end of the first heating conductor, and an arc-shaped second heating conductor which is arranged in the circumferential direction of the second shaft portion; A third heating conductor connected to the other end of the conductor and having the same shape as the first heating conductor and arranged to face the first heating conductor; one end connected to the other end of the third heating conductor; An arc-shaped fourth heating conductor arranged so as to face the intersecting portion of the step portion and the step portion, and one end of the step heating shaft is connected to the other end of the fourth heating conductor and faces the second bottom surface. A linear fifth heating conductor arranged in a direction perpendicular to the axial direction and away from the axis of the stepped shaft, and one end of the fifth heating conductor being the fifth A linear sixth heating conductor which is connected to the other end of the heat conductor and is arranged so as to face the ridgeline of the peripheral surface; one end of which is connected to the other end of the sixth heating conductor; A linear seventh heating conductor which is arranged parallel to the axial direction so as to face the first shaft portion, and one end of which is connected to the other end of the seventh heating conductor and which is arranged in the circumferential direction of the second shaft portion. A circular arc-shaped eighth conductor, one end connected to the other end of the eighth conductor, and a ninth heating conductor having the same shape as the seventh heating conductor and arranged so as to face the seventh heating conductor, and one end A tenth heating conductor connected to the other end of the ninth heating conductor and having the same shape as the sixth heating conductor and arranged to face the sixth heating conductor; and one end connected to the other end of the tenth heating conductor, A fifth heating conductor, which has the same shape as the fifth heating conductor and is disposed so as to face the fifth heating conductor, and has the eleventh heating conductor whose other end is connected to the other power supply conductor, 11 semi-open type high frequency heating coil for heating conductor stepped shaft, characterized in that connected in series.
第１底面と同径の他方側の第２底面を有する円柱形状の
段部と、第１底面に突設され第１底面より小径の第１軸
部と、第２底面に突設され第２底面より小径の第２軸部
とを備えた段付シャフト用高周波加熱コイルにおいて、 一端が一方の電源供給導体に接続され、第１軸部の周方
向に配設された円弧状の第１加熱導体と、 一端が第１加熱導体の他端に接続され、第１軸部に平行
で第１軸部に対向するように配設された直線状の第２加
熱導体と、 一端が第２加熱導体の他端に接続され、第１底面に対向
するように段付シャフトの軸方向と直角方向に且つ段付
シャフトの軸から遠ざかる方向に配設された直線状の第
３加熱導体と、 一端が第３加熱導体の他端に接続され、第１軸部と段部
との交叉部分に対向するように配設された円弧状の第４
加熱導体と、 一端が第４加熱導体の他端に接続され、前記周面に対向
するように段付シャフトの軸方向に配設された直線状の
第５加熱導体と、 一端が第５加熱導体の他端に接続され、第４加熱導体と
同形で第４加熱導体と対向するように配設された第６加
熱導体と、 一端が第６加熱導体の他端に接続され、第３加熱導体と
同形で第３加熱導体と対向するように配設された第７加
熱導体と、 一端が第７加熱導体の他端に接続され、第２軸部に平行
で第２軸部に対向するように配設された直線状の第８加
熱導体と、 一端が第８加熱導体の他端に接続され、第２軸部の周方
向に配設された円弧状の第９加熱導体と、 一端が第９加熱導体の他端に接続され、第８加熱導体と
同形で第８加熱導体と対向するように配設された第10加
熱導体と、 一端が第10加熱導体の他端に接続され、第７加熱導体と
同形で第７加熱導体と対向するように配設された第11加
熱導体と、 一端が第11加熱導体の他端に接続され、第５加熱導体と
同形で第５加熱導体と対向するように配設された第12加
熱導体と、 一端が第12加熱導体の他端に接続され、第11加熱導体と
同形で第11加熱導体と対向するように配設された第13加
熱導体と、 一端が第13加熱導体の他端に接続され、第２加熱導体と
同形で第２加熱導体と対向するように配設された第14加
熱導体と、 一端が第14加熱導体の他端に他端が他方の電源供給導体
にそれぞれ接続され、第１加熱導体と同形で第１加熱導
体に対向するように配設された第15加熱導体とを備え、 第１〜第15加熱導体は直列に接続されていることを特徴
とする段付シャフト用半開放型高周波加熱コイル。2. A cylindrical step portion having a peripheral surface, a first bottom surface on one side of the peripheral surface, and a second bottom surface on the other side having the same diameter as the first bottom surface, and a first step provided on the first bottom surface. In a stepped shaft high frequency heating coil having a first shaft portion having a diameter smaller than the bottom surface and a second shaft portion protruding from the second bottom surface and having a diameter smaller than the second bottom surface, one end is connected to one power supply conductor. An arc-shaped first heating conductor arranged in the circumferential direction of the first shaft portion, one end of which is connected to the other end of the first heating conductor so as to be parallel to the first shaft portion and face the first shaft portion. A linear second heating conductor that is disposed in the stepped shaft, and one end of which is connected to the other end of the second heating conductor, and which is perpendicular to the axial direction of the stepped shaft and faces the first bottom surface. A linear third heating conductor arranged in a direction away from the axis, one end of which is connected to the other end of the third heating conductor, and a first shaft portion and a step portion Arcuate fourth disposed so as to face the intersections
A heating conductor; a linear fifth heating conductor having one end connected to the other end of the fourth heating conductor and arranged in the axial direction of the stepped shaft so as to face the peripheral surface; and one end of the fifth heating conductor. A sixth heating conductor connected to the other end of the conductor and having the same shape as the fourth heating conductor and arranged to face the fourth heating conductor; one end connected to the other end of the sixth heating conductor; A seventh heating conductor having the same shape as the conductor and arranged so as to face the third heating conductor; one end thereof is connected to the other end of the seventh heating conductor and is parallel to the second shaft portion and faces the second shaft portion. A linear eighth heating conductor arranged in such a manner, an arc-shaped ninth heating conductor having one end connected to the other end of the eighth heating conductor and arranged in the circumferential direction of the second shaft portion, and one end. Is connected to the other end of the ninth heating conductor and has a tenth heating conductor arranged in the same shape as the eighth heating conductor so as to face the eighth heating conductor, and An eleventh heating conductor that is connected to the other end of the tenth heating conductor and has the same shape as the seventh heating conductor and is disposed so as to face the seventh heating conductor, and one end of the eleventh heating conductor is connected to the other end of the eleventh heating conductor. 5. A twelfth heating conductor having the same shape as the fifth heating conductor and arranged to face the fifth heating conductor; one end connected to the other end of the twelfth heating conductor; and an twelfth heating conductor having the same shape as the eleventh heating conductor. A thirteenth heating conductor arranged so as to face each other, and a fourteenth heating having one end connected to the other end of the thirteenth heating conductor and having the same shape as the second heating conductor and facing the second heating conductor. A conductor and a fifteenth heating conductor having one end connected to the other end of the fourteenth heating conductor and the other end connected to the other power supply conductor, and having the same shape as the first heating conductor and arranged to face the first heating conductor. And the first to fifteenth heating conductors are connected in series. Yl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991089655U JP2502127Y2 (en) | 1991-10-04 | 1991-10-04 | Semi-open type high frequency heating coil for stepped shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991089655U JP2502127Y2 (en) | 1991-10-04 | 1991-10-04 | Semi-open type high frequency heating coil for stepped shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0533496U true JPH0533496U (en) | 1993-04-30 |
| JP2502127Y2 JP2502127Y2 (en) | 1996-06-19 |
Family
ID=13976777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991089655U Expired - Lifetime JP2502127Y2 (en) | 1991-10-04 | 1991-10-04 | Semi-open type high frequency heating coil for stepped shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2502127Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015041240A1 (en) | 2013-09-17 | 2015-03-26 | 高周波熱錬株式会社 | Induction heating coil, induction heating device, and heating method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5580358U (en) * | 1978-06-30 | 1980-06-03 | ||
| JPS5912492U (en) * | 1982-07-12 | 1984-01-25 | 富士電子工業株式会社 | high frequency heating coil |
| JPH03120317A (en) * | 1989-10-03 | 1991-05-22 | Fuji Denshi Kogyo Kk | High-frequency quenching method |
| JPH03122220A (en) * | 1989-10-05 | 1991-05-24 | Fuji Denshi Kogyo Kk | Induction hardened coil for shafted gears |
-
1991
- 1991-10-04 JP JP1991089655U patent/JP2502127Y2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5580358U (en) * | 1978-06-30 | 1980-06-03 | ||
| JPS5912492U (en) * | 1982-07-12 | 1984-01-25 | 富士電子工業株式会社 | high frequency heating coil |
| JPH03120317A (en) * | 1989-10-03 | 1991-05-22 | Fuji Denshi Kogyo Kk | High-frequency quenching method |
| JPH03122220A (en) * | 1989-10-05 | 1991-05-24 | Fuji Denshi Kogyo Kk | Induction hardened coil for shafted gears |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015041240A1 (en) | 2013-09-17 | 2015-03-26 | 高周波熱錬株式会社 | Induction heating coil, induction heating device, and heating method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2502127Y2 (en) | 1996-06-19 |
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