JPH069091U - High frequency heating coil - Google Patents
High frequency heating coilInfo
- Publication number
- JPH069091U JPH069091U JP5342892U JP5342892U JPH069091U JP H069091 U JPH069091 U JP H069091U JP 5342892 U JP5342892 U JP 5342892U JP 5342892 U JP5342892 U JP 5342892U JP H069091 U JPH069091 U JP H069091U
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- Japan
- Prior art keywords
- heating
- peripheral surface
- outer peripheral
- conductor
- conductors
- Prior art date
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Abstract
(57)【要約】
【目的】 ネジ111 の表面と、軸部120 のフランジ121
の周面に設けた溝122 の表面とを同時に高周波加熱す
る。
【構成】 加熱コイル10は、ネジ111 の表面を加熱する
加熱コイル10A と、溝122 の表面を加熱する加熱コイル
10B と、加熱コイル10A と10B を直列に接続する接続導
体15a 、15b とを備えている。
(57) [Summary] [Purpose] The surface of the screw 111 and the flange 121 of the shaft 120.
At the same time, the surface of the groove 122 provided on the peripheral surface is heated by high frequency. [Composition] The heating coil 10 includes a heating coil 10A for heating the surface of the screw 111 and a heating coil for heating the surface of the groove 122.
10B and connecting conductors 15a and 15b for connecting the heating coils 10A and 10B in series.
Description
【０００１】[0001]
本考案は、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もい う) に関し、特に、シャフト状のワークの間隔をおいた２つの周面を同時に加熱 することができる加熱コイルに関する。 The present invention relates to a high-frequency heating coil (hereinafter, the high-frequency heating coil is also simply referred to as a heating coil), and more particularly to a heating coil capable of simultaneously heating two peripheral surfaces of a shaft-shaped work piece with a space therebetween.
【０００２】[0002]
従来、シャフト状のワークの間隔をおいた２つの周面を例えば焼入や焼き戻し のために高周波加熱する必要がある場合には、各周面の加熱に適した加熱コイル を用いて各周面ごとに別々に加熱していた。 Conventionally, when it has been necessary to perform high frequency heating on two circumferential surfaces with a shaft-shaped work piece spaced apart, for example for quenching or tempering, a heating coil suitable for heating each circumferential surface is used for each circumferential surface. Each side was heated separately.
【０００３】[0003]
このように、２つの周面を別々に加熱するので、加熱のための時間が長くかか る。本考案は上記事情に鑑みて創案されたものであって、シャフト状のワークの 間隔をおいた２つの周面を同時に加熱することができる加熱コイルを提供するこ とを目的としている。 As described above, since the two peripheral surfaces are heated separately, it takes a long time for heating. The present invention was devised in view of the above circumstances, and an object thereof is to provide a heating coil capable of simultaneously heating two circumferential surfaces of a shaft-shaped work piece with a space therebetween.
【０００４】[0004]
上記問題を解決するために、請求項１記載の高周波加熱コイルは、第１外周面 と、第１外周面より小さくない径を有し第１外周面から間隔をおいた第２外周面 とを有するほぼ回転対称体のワークの高周波加熱コイルにおいて、第１外周面を 加熱する第１加熱コイルと、第２外周面を加熱する第２加熱コイルと、第１およ び第２加熱コイルを直列に接続する接続導体とを備えている。 In order to solve the above problems, a high frequency heating coil according to claim 1 has a first outer peripheral surface and a second outer peripheral surface having a diameter not smaller than that of the first outer peripheral surface and spaced from the first outer peripheral surface. In a high-frequency heating coil for a workpiece having a substantially rotationally symmetrical body, a first heating coil that heats a first outer peripheral surface, a second heating coil that heats a second outer peripheral surface, and a first and second heating coil are connected in series. And a connection conductor to be connected to.
【０００５】 請求項２記載の高周波加熱コイルは、請求項１記載の高周波加熱コイルにおい て、第１加熱コイルは、一端が電源供給導体に接続され、第１外周面に接近対向 するように第１外周面の周方向に配設されたほぼ１／４円弧状の１対の第１加熱 導体と、第１加熱導体の他端に一端が接続され、第１外周面に接近対向するよう にワークの軸方向に配設された１対の直線状の第２加熱導体と、第２加熱導体の 他端に接続され、第１加熱導体が配設された側と反対側の第１外周面に接近対向 するように第１外周面の周方向に配設されたほぼ１／４円弧状の１対の第３加熱 導体とを備えており、第２加熱コイルは、両端がそれぞれ前記接続導体を介して 第３加熱導体の他端に接続され、第１および第３加熱導体の径より小さくない径 を有し、第２外周面に接近対向するように第２外周面の周方向に配設された環状 の第４加熱導体とを備えている。A high frequency heating coil according to a second aspect is the high frequency heating coil according to the first aspect, wherein one end of the first heating coil is connected to the power supply conductor, and the first heating coil is arranged so as to approach and approach the first outer peripheral surface. One pair of first heating conductors arranged in the circumferential direction of the first outer circumferential surface and having a substantially quarter arc shape, and one end thereof is connected to the other end of the first heating conductor so as to approach and face the first outer circumferential surface. A pair of linear second heating conductors arranged in the axial direction of the workpiece and a first outer peripheral surface connected to the other end of the second heating conductor and opposite to the side where the first heating conductor is arranged. And a pair of third heating conductors arranged in the circumferential direction of the first outer peripheral surface so as to be close to and facing the first outer circumferential surface. Is connected to the other end of the third heating conductor via a wire having a diameter not smaller than the diameters of the first and third heating conductors. And an annular fourth heating conductor arranged in the circumferential direction of the second outer peripheral surface so as to closely approach and face the second outer peripheral surface.
【０００６】 請求項３記載の高周波加熱コイルは、請求項１記載の高周波加熱コイルにおい て、第１加熱コイルは、一端が電源供給導体に接続され、第１外周面に接近対向 するように第１外周面の周方向に配設されたほぼ１／４円弧状の１対の第１加熱 導体と、第１加熱導体の他端に一端が接続され、第１外周面に接近対向するよう にワークの軸方向に配設された１対の直線状の第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加熱導体が配設された側と反対側の第１外周面に接 近対向するように第１外周面の周方向に配設されたほぼ１／４円弧状の１対の第 ３加熱導体とを備え、第２加熱コイルは、一端が前記接続導体を介して第３加熱 導体の他端に接続され、第１および第３加熱導体より小さくない径を有し、第２ 外周面に接近対向するように第２外周面の周方向に配設されたほぼ１／４円弧状 の１対の第５加熱導体と、一端が第５加熱導体の他端に接続され、第２外周面に 接近対向するようにワークの軸方向に配設された１対の直線状の第６加熱導体と 、第６加熱導体の他端間に接続され、第２外周面に接近対向するように第２外周 面の周方向に配設されたほぼ１／２円弧状の第７加熱導体とを備えている。A high frequency heating coil according to a third aspect is the high frequency heating coil according to the first aspect, wherein one end of the first heating coil is connected to the power supply conductor, and the first heating coil is arranged so as to approach and face the first outer peripheral surface. One pair of first heating conductors arranged in the circumferential direction of the first outer circumferential surface and having a substantially quarter arc shape, and one end thereof is connected to the other end of the first heating conductor so as to approach and face the first outer circumferential surface. A pair of linear second heating conductors arranged in the axial direction of the workpiece and one end connected to the other end of the second heating conductor on the side opposite to the side on which the first heating conductor is arranged. The second heating coil includes a pair of third heating conductors arranged in a circumferential direction of the first outer circumferential surface so as to closely face and face the outer circumferential surface, and one end of the second heating coil is the connection conductor. Is connected to the other end of the third heating conductor via the second heating conductor and has a diameter not smaller than that of the first and third heating conductors. A pair of fifth heating conductors arranged in the circumferential direction of the second outer peripheral surface so as to closely face and face the peripheral surface and one end connected to the other end of the fifth heating conductor; 2 A pair of linear sixth heating conductors arranged in the axial direction of the work so as to approach and face the outer peripheral surface, and is connected between the other ends of the sixth heating conductors and closely faces the second outer peripheral surface. As described above, the seventh heating conductor is arranged in the circumferential direction of the second outer peripheral surface and has a substantially arcuate shape.
【０００７】 請求項４記載の高周波加熱コイルは、請求項１記載の高周波加熱コイルにおい て、第１加熱コイルは、一端が電源供給導体に接続され、第１外周面に接近対向 するように第１外周面の周方向に配設されたほぼ１／４円弧状の１対の第８加熱 導体と、第８加熱導体の他端に一端が接続され、ワークの軸方向の外周面の形状 に対応するように形成されていると共に、第１外周面に接近対向するようにワー クの軸方向に配設された１対の第９加熱導体と、一端が第２加熱導体の他端に接 続され、第１外周面に接近対向するように第１外周面の周方向に配設されたほぼ １／４円弧状の１対の第10加熱導体とを備え、第２加熱コイルは、一端が前記接 続導体を介して第10加熱導体の他端に接続され、第８および第10加熱導体の径よ り小さくない径を有し、第２外周面に接近対向するように第２外周面の周方向に 配設されたほぼ１／４円弧状の１対の第11加熱導体と、一端が第11加熱導体の他 端に接続され、第２外周面に接近対向するようにワークの軸方向に配設された１ 対の直線状の第12加熱導体と、第12加熱導体の他端間に接続され、第２外周面に 接近対向するように第２外周面の周方向に配設されたほぼ１／２円弧状の第13加 熱導体とを備えている。A high frequency heating coil according to a fourth aspect is the high frequency heating coil according to the first aspect, wherein one end of the first heating coil is connected to the power supply conductor, and the first heating coil is arranged so as to approach and face the first outer peripheral surface. One pair of eighth heating conductors arranged in the circumferential direction of the one outer peripheral surface and having a substantially 1/4 circular arc shape, and one end connected to the other end of the eighth heating conductor to form the shape of the outer peripheral surface in the axial direction of the workpiece. A pair of ninth heating conductors, which are formed so as to correspond to each other and are arranged in the axial direction of the work so as to closely face and face the first outer peripheral surface, and one end thereof contacts the other end of the second heating conductor. And a pair of tenth heating conductors each having a substantially 1/4 arc shape and arranged in the circumferential direction of the first outer circumferential surface so as to closely approach and face the first outer circumferential surface. Is connected to the other end of the 10th heating conductor via the connecting conductor and is smaller than the diameters of the 8th and 10th heating conductors. A pair of eleventh heating conductors each having a diameter that is not large and arranged in the circumferential direction of the second outer circumferential surface so as to closely face and face the second outer circumferential surface, and one end of the eleventh heating conductor. Connected to the other end of the conductor and between a pair of linear 12th heating conductors arranged in the axial direction of the work so as to approach and face the second outer peripheral surface and the other end of the 12th heating conductor. , A substantially ½ arc-shaped thirteenth heating conductor which is arranged in the circumferential direction of the second outer peripheral surface so as to closely approach and oppose the second outer peripheral surface.
【０００８】[0008]
以下、図１〜６を参照して本発明の実施例を説明する。図１は第１実施例を説 明するための図面であって図１（ａ) は模式的斜視図、図１（ｂ）は側面説明図 である。図２は第２実施例を説明するための図面であって図２（ａ) は模式的斜 視図、図２（ｂ）は側面説明図である。図３は第３実施例を説明するための図面 であって図３（ａ) は模式的斜視図、図３（ｂ）は側面説明図、図３（ｃ) は正 面説明図である。図４と図５はつば付シャフトの縦断正面図、図６は段付シャフ トの縦断正面図である。 Embodiments of the present invention will be described below with reference to FIGS. 1A and 1B are drawings for explaining a first embodiment, FIG. 1A is a schematic perspective view, and FIG. 1B is a side view. 2A and 2B are views for explaining the second embodiment, FIG. 2A is a schematic perspective view, and FIG. 2B is a side view. 3 (a) and 3 (b) are schematic perspective views, FIG. 3 (b) is a side view and FIG. 3 (c) is a front view. 4 and 5 are vertical sectional front views of the flanged shaft, and FIG. 6 is a vertical sectional front view of the stepped shaft.
【０００９】 まず、第１実施例を説明する。ワークとしては図４に示すつば付シャフト100 を採り上げる。つば付シャフト100 は、ほぼ回転対称体であり、ネジ部110 と、 ネジ部110 と一体形成された軸部120 とを備えている。ネジ部110 の外周面には ネジ111 が形成されている。軸部120 のほぼ中央部分の外周面には環状のフラン ジ121 が周方向に突出形成されており、フランジ121 の周面には環状の溝122 が 設けられている。なお、ネジ部110 の径より軸部120 の径が大きく、軸部120 の 径よりフランジ121 の径が大きい。そして、前記溝122 の表面、および前記ネジ 112 の表面を、例えば焼入のために、高周波加熱することが要求される場合を説 明する。First, a first embodiment will be described. As the work piece, the shaft 100 with a collar shown in Fig. 4 is used. The flanged shaft 100 is a substantially rotationally symmetrical body, and includes a screw portion 110 and a shaft portion 120 integrally formed with the screw portion 110. A screw 111 is formed on the outer peripheral surface of the screw portion 110. An annular flange 121 is formed so as to project in the circumferential direction on the outer peripheral surface of the substantially central portion of the shaft portion 120, and an annular groove 122 is provided on the peripheral surface of the flange 121. The diameter of the shaft portion 120 is larger than the diameter of the screw portion 110, and the diameter of the flange 121 is larger than the diameter of the shaft portion 120. Then, a case will be described in which the surface of the groove 122 and the surface of the screw 112 are required to be subjected to high frequency heating for quenching, for example.
【００１０】 第１実施例の加熱コイル10は、ネジ部110 を加熱する加熱コイル（第１加熱コ イル) 10A と、溝122 を加熱する加熱コイル10B （第２加熱コイル) と、加熱コ イル10A と10B とを直列に接続する接続導体15a 、15b とを備えている。The heating coil 10 of the first embodiment includes a heating coil (first heating coil) 10A for heating the screw portion 110, a heating coil 10B (second heating coil) for heating the groove 122, and a heating coil. It is provided with connecting conductors 15a and 15b for connecting 10A and 10B in series.
【００１１】 加熱コイル10A は、ネジ部110 に接近対向するようにネジ部110 の周方向に配 設され、一端にそれぞれ電源供給導体10a 、10b が接続されたほぼ１／４円弧状 の１対の加熱導体11a 、11b （第１加熱導体) と、加熱導体11a 、11b のそれぞ れの他端に一端が接続され、ネジ部110 に接近対向するようにつば付シャフト10 0 の軸130 の方向に配設された１対の直線状の加熱導体12a 、12b （第２加熱導 体) と、加熱導体12a 、12b のそれぞれの他端に一端が接続され、加熱導体11a 、11b が配設された側と反対側のネジ部110 に接近対向するようにネジ部110 の 周方向に配設されたほぼ１／４円弧状の１対の加熱導体13a 、13b （第３加熱導 体) とを備えている。The heating coil 10A is arranged in the circumferential direction of the screw portion 110 so as to closely face and face the screw portion 110, and a pair of approximately 1/4 circular arcs each having one end connected to the power supply conductors 10a and 10b. Of the heating conductors 11a and 11b (first heating conductor) and the other end of each of the heating conductors 11a and 11b, and one end of the heating conductors 11a and 11b is connected to the shaft portion 130 of the flanged shaft 100 so as to face the screw portion 110 closely. A pair of linear heating conductors 12a, 12b (second heating conductors) arranged in the same direction, and one end of each of the heating conductors 12a, 12b is connected to the other end, and heating conductors 11a, 11b are provided. And a pair of heating conductors 13a and 13b (third heating conductors), which are arranged in the circumferential direction of the screw portion 110 so as to approach and face the screw portion 110 on the opposite side to the opposite side. Is equipped with.
【００１２】 加熱コイル10B は、加熱導体11a 、11b 、13a および13b より大径であって溝 122 の表面に接近対向するように溝122 の周方向に配設された環状の加熱導体14 （第４加熱導体) からなっている。なお、加熱導体14の両端は、接続導体15a 、 15b を介して加熱コイル10A の加熱導体13a 、13b の他端に接続されている。The heating coil 10 B has a larger diameter than the heating conductors 11 a, 11 b, 13 a, and 13 b, and is arranged in the circumferential direction of the groove 122 so as to approach and face the surface of the groove 122. 4 heating conductors). Both ends of the heating conductor 14 are connected to the other ends of the heating conductors 13a and 13b of the heating coil 10A via the connection conductors 15a and 15b.
【００１３】 19は、つば付シャフト100 の軸130 と平行に配設された絶縁性の加熱コイル取 付板であって、電源供給導体10a 、10b は、この加熱コイル取付板19を貫通し加 熱コイル取付板19によって支持されている。また、加熱導体14の中央部分は、加 熱コイル取付板19にナット18b によって固定されたボルト18a の先端に、ろう付 けによって固定、支持されている。Reference numeral 19 denotes an insulating heating coil mounting plate which is arranged in parallel with the axis 130 of the flanged shaft 100, and the power supply conductors 10 a and 10 b penetrate the heating coil mounting plate 19 and are added. It is supported by the thermal coil mounting plate 19. The central portion of the heating conductor 14 is fixed and supported by brazing to the tip of a bolt 18a fixed to the heating coil mounting plate 19 by a nut 18b.
【００１４】 本実施例の動作を説明する。加熱コイル10A および10B がそれぞれつば付シャ フト100 のネジ部110 の周面および軸部120 のフランジ121 の溝122 に対向する ように加熱コイル10を配設後、つば付シャフト100 を軸130 を中心として回転さ せながら、加熱コイル10の電源供給導体10a 、10b に図示しない高周波電源から 高周波電流を供給すると、高周波電流は、電源供給導体10a 、加熱導体11a 〜13 a 、接続導体15a 、加熱導体14、接続導体15b 、加熱導体13b 、12b および11b の経路で、或いは、この逆の経路で流れてネジ部110 の周面および溝122 の表面 を同時に加熱する。The operation of this embodiment will be described. After arranging the heating coil 10 so that the heating coils 10A and 10B face the peripheral surface of the threaded portion 110 of the flanged shaft 100 and the groove 122 of the flange 121 of the shaft portion 120, respectively, the shaft with collar 100 is attached to the shaft 130. When a high-frequency current is supplied to the power supply conductors 10a and 10b of the heating coil 10 from a high-frequency power source (not shown) while rotating as the center, the high-frequency current is generated by the power supply conductor 10a, the heating conductors 11a to 13a, the connecting conductor 15a, and the heating conductor. The conductor 14, the connecting conductor 15b, the heating conductors 13b, 12b, and 11b flow in the path or in the reverse path to heat the peripheral surface of the screw part 110 and the surface of the groove 122 at the same time.
【００１５】 次に、第２実施例を説明する。本実施例でもワークとしてつば付シャフトを採 り上げる。図５は他例のつば付シャフト100Aの縦断正面図であって、このつば付 シャフト100Aは、前記つば付シャフト100 のネジ部110 と同じネジ部110 と、軸 部120Aとを備えている。軸部120Aは、つば付シャフト100 のフランジ121 の幅よ り広い幅のフランジ121Aを有するが、フランジ121 の周面に形成された溝122 に 相当する溝は設けられていない。Next, a second embodiment will be described. In this embodiment as well, a shaft with a collar is used as a work. FIG. 5 is a vertical cross-sectional front view of a flanged shaft 100A according to another example. The flanged shaft 100A includes a threaded portion 110 that is the same as the threaded portion 110 of the flanged shaft 100, and a shaft portion 120A. The shaft portion 120A has a flange 121A wider than the flange 121 of the flanged shaft 100, but is not provided with a groove corresponding to the groove 122 formed on the peripheral surface of the flange 121.
【００１６】 図２に示すように、第２実施例の加熱コイル20は、第１実施例の加熱コイル10 の加熱コイル10A と同じ加熱コイル20A （第１加熱コイル) と、この加熱コイル 20A に直列に接続された加熱コイル20B （第２加熱コイル) とを備えている。即 ち、加熱コイル20A の加熱導体21a 、21b 、22a 、22b 、23a 、および23b は、 それぞれ加熱コイル10A の加熱導体11a 、11b 、12a 、12b 、13a 、および13b と同じである。As shown in FIG. 2, the heating coil 20 of the second embodiment has the same heating coil 20A (first heating coil) as the heating coil 10A of the heating coil 10 of the first embodiment, and The heating coil 20B (second heating coil) connected in series is provided. That is, the heating conductors 21a, 21b, 22a, 22b, 23a, and 23b of the heating coil 20A are the same as the heating conductors 11a, 11b, 12a, 12b, 13a, and 13b of the heating coil 10A, respectively.
【００１７】 加熱コイル20B は、半開放鞍型の加熱コイルであって、一端がそれぞれ接続導 体27a 、27b を介して加熱導体23a 、23b の他端に接続され、加熱導体21a 、21 b 、23a 、23b より大径であってフランジ121Aの外周面に接近対向するようにフ ランジ121Aの周方向に配設されたほぼ１／４円弧状の１対の加熱導体25a 、25b （第５加熱導体) と、一端が加熱導体25a 、25b の他端に接続され、フランジ12 1Aの外周面に接近対向するようにつば付シャフト100Aの軸130Aの方向に配設され た１対の直線状の加熱導体26a 、26b （第６加熱導体) と、加熱導体26a 、26b の他端間に接続され、フランジ121Aの外周面に接近対向するようにこのの外周面 の周方向に配設されたほぼ１／２円弧状の加熱導体27（第７加熱導体) とを備え ている。The heating coil 20B is a half-open saddle type heating coil, one end of which is connected to the other ends of the heating conductors 23a and 23b via connection conductors 27a and 27b, respectively. 23a, 23b, a pair of heating conductors 25a, 25b (fifth heating) that are arranged in the circumferential direction of the flange 121A so as to approach and face the outer peripheral surface of the flange 121A. Conductor) and one end connected to the other ends of the heating conductors 25a, 25b, and a pair of straight line-shaped members arranged in the direction of the axis 130A of the flanged shaft 100A so as to approach and face the outer peripheral surface of the flange 121A. It is connected between the heating conductors 26a, 26b (sixth heating conductor) and the other ends of the heating conductors 26a, 26b, and is disposed in the circumferential direction of the outer peripheral surface of the flange 121A so as to approach and face the outer peripheral surface of the flange 121A. It is provided with a 1/2 arc-shaped heating conductor 27 (seventh heating conductor).
【００１８】 29は、つば付シャフト100Aの軸130Aと平行に配設された絶縁性の加熱コイル取 付板であって、電源供給導体20a 、20b は、この加熱コイル取付板29を貫通し加 熱コイル取付板29によって支持されている。また、加熱導体26a 、26b の中央部 分は、加熱コイル取付板29にナット28b によって固定された２本のボルト28a の 先端に、それぞれ、ろう付けによって固定、支持されている。Reference numeral 29 denotes an insulating heating coil mounting plate which is arranged parallel to the axis 130A of the flanged shaft 100A, and the power supply conductors 20a and 20b penetrate the heating coil mounting plate 29 and are added. It is supported by the thermal coil mounting plate 29. The central portions of the heating conductors 26a and 26b are fixed and supported by brazing to the tips of the two bolts 28a fixed to the heating coil mounting plate 29 by nuts 28b.
【００１９】 第２実施例の動作も第１実施例の動作と同様であって、図示しない高周波電源 から高周波電流を電源供給導体20a 、20b に供給すると、加熱コイル20A は、つ ば付シャフト100Aのネジ部110 の周面を加熱し、同時に、加熱コイル20B は、フ ランジ121Aの周面を加熱する。The operation of the second embodiment is also similar to the operation of the first embodiment, and when a high frequency current is supplied to the power supply conductors 20a and 20b from a high frequency power source (not shown), the heating coil 20A moves to the flanged shaft 100A. The peripheral surface of the screw portion 110 is heated, and at the same time, the heating coil 20B heats the peripheral surface of the flange 121A.
【００２０】 更に、第３実施例を説明する。この実施例で採り上げるワークは、図６に示す ほぼ回転対称体の段付シャフト300 であって、この段付シャフト300 は、軸部31 0 と、軸部310 の端部に軸部310 と一体形成された筒状部320 を備えている。軸 部310 は一端部分から他端部分にわたってネジ部311 、ネジ部311 より大径のテ ーパー部312 、およびテーパー部312 より大径の段部313 とを備えている。筒状 部320 は内部に凹所322 が形成されている。そして、例えば焼入のために、ネジ 部314 の周面 、テーパー部312 の周面、および段部313 の側面314 を加熱する ことが要求され、筒状部320 の外周面321 が、例えば焼き戻しのため、或いは、 段付シャフト300 の造形時の金型との焼付防止剤の剥離のために、加熱すること が要求される場合を説明する。Further, a third embodiment will be described. The work to be taken in this embodiment is a stepped shaft 300 having a substantially rotationally symmetrical body shown in FIG. 6, and this stepped shaft 300 is integrated with the shaft part 310 and the shaft part 310 at the end of the shaft part 310. It has a formed tubular part 320. The shaft portion 310 is provided with a screw portion 311, a taper portion 312 having a diameter larger than the screw portion 311, and a step portion 313 having a diameter larger than the taper portion 312 from one end portion to the other end portion. The tubular portion 320 has a recess 322 formed therein. Then, for example, for quenching, it is required to heat the peripheral surface of the screw portion 314, the peripheral surface of the taper portion 312, and the side surface 314 of the step portion 313, and the outer peripheral surface 321 of the tubular portion 320 is, for example, quenched. A case where heating is required for returning or for peeling the anti-seizure agent from the mold at the time of shaping the stepped shaft 300 will be described.
【００２１】 図３に示すように、段付シャフト300 を加熱する加熱コイル30は、加熱コイル 30A （第１加熱コイル) と、加熱コイル30A に直列に接続された加熱コイル30B （第２加熱コイル) とを備えている。加熱コイル30A は、一端が電源供給導体30 a 、30b に接続され、ネジ部311 の外周面に接近対向するようにネジ部311 の周 方向に配設されたほぼ１／４円弧状の１対の加熱導体31a 、31b （第８加熱導体 ) と、加熱導体31a 、31b の他端に一端が接続され、段付シャフト300 のテーパ ー部312 の外周面の軸330 の方向の形状に対応するように形成されていると共に 、テーパー部312 の外周に接近対向するように軸330 の方向に配設された１対の 加熱導体33a 、33b （第９加熱導体) と、一端が加熱導体33a 、33b の他端に接 続され、段部313 の側面314 に接近対向するように配設されたほぼ１／４円弧状 の１対の加熱導体34a 、34b （第10加熱導体) とを備えている。As shown in FIG. 3, the heating coil 30 for heating the stepped shaft 300 includes a heating coil 30A (first heating coil) and a heating coil 30B (second heating coil) connected in series to the heating coil 30A. ) And. One end of the heating coil 30A is connected to the power supply conductors 30a and 30b, and is arranged in the circumferential direction of the screw portion 311 so as to closely face and face the outer peripheral surface of the screw portion 311, and is a pair of approximately 1/4 circular arcs. Of the heating conductors 31a and 31b (eighth heating conductor) and the other ends of the heating conductors 31a and 31b, one end of which is connected to the outer peripheral surface of the tapered portion 312 of the stepped shaft 300 in the direction of the axis 330. And a pair of heating conductors 33a and 33b (9th heating conductor) arranged in the direction of the shaft 330 so as to closely approach and face the outer circumference of the tapered portion 312, and one end of the heating conductor 33a, A pair of heating conductors 34a and 34b (tenth heating conductors), which are connected to the other end of 33b and are arranged so as to closely approach and face the side surface 314 of the step portion 313. There is.
【００２２】 加熱コイル30B は、半開放鞍型の加熱コイルであって、一端がそれぞれ接続導 体38a 、38b を介して加熱導体34a 、34b の他端に接続され、加熱導体31a 、31 b 、34a 、34b より大径であって筒状部320 の外周面321 に接近対向するように 外周面321 の周方向に配設されたほぼ１／４円弧状の１対の加熱導体35a 、35b （第11加熱導体) と、一端が加熱導体35a 、35b の他端に接続され、外周面321 に接近対向するように軸330 の方向に配設された１対の直線状の加熱導体36a 、 36b （第12加熱導体) と、加熱導体36a 、36b の他端間に接続され、外周面321 に接近対向するように外周面321 の周方向に配設されたほぼ１／２円弧状の加熱 導体37（第13加熱導体) とを備えている。The heating coil 30B is a half-open saddle type heating coil, one end of which is connected to the other ends of the heating conductors 34a and 34b via connection conductors 38a and 38b, respectively. 34a, 34b, a pair of heating conductors 35a, 35b having a diameter substantially larger than that of the cylindrical portion 320 and arranged in the circumferential direction of the outer peripheral surface 321 so as to closely face and oppose the outer peripheral surface 321. Eleventh heating conductor), and a pair of linear heating conductors 36a, 36b whose one end is connected to the other ends of the heating conductors 35a, 35b and are arranged in the direction of the axis 330 so as to approach and face the outer peripheral surface 321. (Twelfth heating conductor) and heating conductors 36a and 36b, which are connected between the other ends and are arranged in the circumferential direction of the outer peripheral surface 321 so as to approach and face the outer peripheral surface 321 in a substantially arcuate shape. 37 (13th heating conductor).
【００２３】 なお、筒状部320 の外周面321 の加熱は、この場合には、焼入のための加熱で はなく、前記のように、焼き戻し、或いは、金型による造形時の焼付防止剤の剥 離を目的としているので、焼入のための加熱のようにワークを摂氏約900 度乃至 1000度に加熱する必要がなく、外周面321 の温度を例えば摂氏約150 〜250 度を 越えないように加熱することを要求される。しかし、加熱コイル30B には、加熱 コイル30A と同じ大きさの高周波電流が流れるので、外周面321 の加熱温度を上 記の程度に収めるために、加熱導体35a 、35b の合計円周角、および加熱導体37 の円周角を、加熱導体31a 、31b の合計円周角や加熱導体34a 、34b の合計円周 角より小さくしてある。このようにする代わりに、加熱コイル30B と、筒状部32 0 の外周面321 との間の空隙距離を加熱コイル30A と軸部310 との間の空隙距離 よりも大きくする方法を採用することもできる。In this case, the heating of the outer peripheral surface 321 of the tubular portion 320 is not the heating for quenching, but the tempering or the seizure prevention at the time of molding by the die as described above. Since the purpose is to remove the agent, it is not necessary to heat the workpiece to about 900 to 1000 degrees Celsius as in the case of heating for quenching, and the temperature of the outer peripheral surface 321 exceeds, for example, about 150 to 250 degrees Celsius. It is required to heat so that it does not exist. However, since a high-frequency current of the same magnitude as that of the heating coil 30A flows through the heating coil 30B, in order to keep the heating temperature of the outer peripheral surface 321 within the above range, the total circumferential angle of the heating conductors 35a and 35b, and The circumferential angle of the heating conductor 37 is smaller than the total circumferential angle of the heating conductors 31a and 31b and the total circumferential angle of the heating conductors 34a and 34b. Instead of this, a method is adopted in which the gap distance between the heating coil 30B and the outer peripheral surface 321 of the tubular portion 320 is made larger than the gap distance between the heating coil 30A and the shaft portion 310. You can also
【００２４】 40は、段付シャフト300 の軸330 と平行に且つ互いに対向するように段付シャ フト300 の両側に配設された絶縁性の１対の加熱コイル取付板である。そして、 加熱導体31a 、31b の他端近辺、加熱導体34a 、34b の一端近辺、および加熱導 体36a 、36b の２個所は、それぞれ、加熱コイル取付板40にナット39b によって 固定されたボルト39a の先端に、ろう付けによって固定、支持されている。Reference numeral 40 denotes a pair of insulative heating coil mounting plates arranged on both sides of the stepped shaft 300 so as to be parallel to the axis 330 of the stepped shaft 300 and face each other. The heating conductors 31a and 31b near the other ends thereof, the heating conductors 34a and 34b near one end thereof, and the heating conductors 36a and 36b at two positions thereof are respectively attached to the heating coil mounting plate 40 by bolts 39a fixed by nuts 39b. The tip is fixed and supported by brazing.
【００２５】 第３実施例の動作も、第１実施例の動作と同様であって、加熱コイル30A は、 軸部310 の周面を焼入温度まで加熱し、同時に、加熱コイル30B は、筒状部320 の外周面321 を、焼き戻し温度、或いは、焼付防止剤が剥離する温度まで加熱す る。The operation of the third embodiment is also similar to the operation of the first embodiment, and the heating coil 30A heats the peripheral surface of the shaft portion 310 to the quenching temperature, and at the same time, the heating coil 30B is a cylinder. The outer peripheral surface 321 of the shaped portion 320 is heated to a tempering temperature or a temperature at which the anti-seizure agent peels off.
【００２６】[0026]
以上説明したように、請求項１、２、3 および４記載の加熱コイルは、何れも 、第１外周面と、第１外周面より小さくない径を有し第１外周面から間隔をおい た第２外周面とを有するほぼ回転対称体の第１外周面を加熱する第１加熱コイル と、第２外周面を加熱する第２加熱コイルと、第１および第２加熱コイルを直列 に接続する接続導体とを備えている。従って、本考案の加熱コイルを使用して、 前記第１外周面と第２外周面とを同時に加熱することができる。 As described above, each of the heating coils according to claims 1, 2, 3 and 4 has the first outer peripheral surface and a diameter not smaller than the first outer peripheral surface and is spaced from the first outer peripheral surface. A first heating coil for heating a first outer peripheral surface of a substantially rotationally symmetrical body having a second outer peripheral surface, a second heating coil for heating a second outer peripheral surface, and first and second heating coils are connected in series. And a connecting conductor. Therefore, it is possible to simultaneously heat the first outer peripheral surface and the second outer peripheral surface using the heating coil of the present invention.
【図１】第１実施例を説明するための図面であって、図
１（ａ) は模式的斜視図、図１（ｂ）は側面説明図であ
る。1A and 1B are drawings for explaining a first embodiment, FIG. 1A is a schematic perspective view, and FIG. 1B is a side explanatory view.
【図２】第２実施例を説明するための図面であって、図
２（ａ) は模式的斜視図、図２（ｂ）は側面説明図であ
る。2A and 2B are drawings for explaining a second embodiment, FIG. 2A is a schematic perspective view, and FIG. 2B is a side view.
【図３】第３実施例を説明するための図面であって、図
３（ａ) は模式的斜視図、図３（ｂ）は側面説明図、図
３（ｃ) は正面説明図である。3A and 3B are drawings for explaining a third embodiment, FIG. 3A is a schematic perspective view, FIG. 3B is a side view, and FIG. 3C is a front view. .
【図４】つば付シャフトの縦断正面図である。FIG. 4 is a vertical cross-sectional front view of a shaft with a collar.
【図５】他例のつば付シャフトの縦断正面図である。FIG. 5 is a vertical sectional front view of a flanged shaft of another example.
【図６】段付シャフトの縦断正面図である。FIG. 6 is a vertical sectional front view of a stepped shaft.
10、10A 、10B 、20、20A 、20B 、30、30A 、30B 加
熱コイル 10a 、10b 、20a 、20b 、30a 、30b 電源供給導体 11a 、11b 、12a 、12b 、13a 、13b 、14、21a 、21b
、22a 、22b 、23a 、23b 、25a 、25b 、26a 、26b
、27、31a 、31b 、32a 、32b 、33a 、33b 、34a 、3
4b 、35a 、35b 、36a 、36b 、37 加熱導体 15a 、15b 、27a 、27b 、38a 、38b 接続導体 111 、314 ネジ 121 、121A フランジ 310 軸部 320 筒状部 321 外周面10, 10A, 10B, 20, 20A, 20B, 30, 30A, 30B Heating coil 10a, 10b, 20a, 20b, 30a, 30b Power supply conductor 11a, 11b, 12a, 12b, 13a, 13b, 14, 21a, 21b
, 22a, 22b, 23a, 23b, 25a, 25b, 26a, 26b
, 27, 31a, 31b, 32a, 32b, 33a, 33b, 34a, 3
4b, 35a, 35b, 36a, 36b, 37 Heating conductors 15a, 15b, 27a, 27b, 38a, 38b Connection conductors 111, 314 Screws 121, 121A Flange 310 Shaft portion 320 Tubular portion 321 Outer peripheral surface
Claims (4)
い径を有し第１外周面から間隔をおいた第２外周面とを
有するほぼ回転対称体のワークの高周波加熱コイルにお
いて、 第１外周面を加熱する第１加熱コイルと、第２外周面を
加熱する第２加熱コイルと、第１および第２加熱コイル
を直列に接続する接続導体とを備えたことを特徴とする
高周波加熱コイル。1. A high-frequency heating coil for a work of a substantially rotationally symmetrical body having a first outer peripheral surface and a second outer peripheral surface having a diameter not smaller than that of the first outer peripheral surface and spaced from the first outer peripheral surface, A high frequency wave, comprising: a first heating coil for heating the first outer peripheral surface, a second heating coil for heating the second outer peripheral surface, and a connection conductor for connecting the first and second heating coils in series. Heating coil.
に接続され、第１外周面に接近対向するように第１外周
面の周方向に配設されたほぼ１／４円弧状の１対の第１
加熱導体と、第１加熱導体の他端に一端が接続され、第
１外周面に接近対向するようにワークの軸方向に配設さ
れた１対の直線状の第２加熱導体と、第２加熱導体の他
端に接続され、第１加熱導体が配設された側と反対側の
第１外周面に接近対向するように第１外周面の周方向に
配設されたほぼ１／４円弧状の１対の第３加熱導体とを
備え、 第２加熱コイルは、両端がそれぞれ前記接続導体を介し
て第３加熱導体の他端に接続され、第１および第３加熱
導体の径より小さくない径を有し、第２外周面に接近対
向するように第２外周面の周方向に配設された環状の第
４加熱導体とを備えている請求項１記載の高周波加熱コ
イル。2. The first heating coil is connected to a power supply conductor at one end thereof and is arranged in the circumferential direction of the first outer peripheral surface so as to closely face and oppose the first outer peripheral surface. First of pair
A heating conductor; a pair of linear second heating conductors, one end of which is connected to the other end of the first heating conductor and which are arranged in the axial direction of the work so as to closely face and face the first outer peripheral surface; A quarter circle connected to the other end of the heating conductor and arranged in the circumferential direction of the first outer peripheral surface so as to closely approach and oppose the first outer peripheral surface opposite to the side on which the first heating conductor is disposed. An arc-shaped pair of third heating conductors is provided, and both ends of the second heating coil are connected to the other end of the third heating conductor via the connection conductors, respectively, and the diameter of the second heating coil is smaller than the diameters of the first and third heating conductors. The high-frequency heating coil according to claim 1, further comprising: an annular fourth heating conductor having a non-diameter and arranged in the circumferential direction of the second outer peripheral surface so as to closely face and face the second outer peripheral surface.
に接続され、第１外周面に接近対向するように第１外周
面の周方向に配設されたほぼ１／４円弧状の１対の第１
加熱導体と、第１加熱導体の他端に一端が接続され、第
１外周面に接近対向するようにワークの軸方向に配設さ
れた１対の直線状の第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加熱導体が配設された側と反
対側の第１外周面に接近対向するように第１外周面の周
方向に配設されたほぼ１／４円弧状の１対の第３加熱導
体とを備え、 第２加熱コイルは、一端が前記接続導体を介して第３加
熱導体の他端に接続され、第１および第３加熱導体より
小さくない径を有し、第２外周面に接近対向するように
第２外周面の周方向に配設されたほぼ１／４円弧状の１
対の第５加熱導体と、一端が第５加熱導体の他端に接続
され、第２外周面に接近対向するようにワークの軸方向
に配設された１対の直線状の第６加熱導体と、第６加熱
導体の他端間に接続され、第２外周面に接近対向するよ
うに第２外周面の周方向に配設されたほぼ１／２円弧状
の第７加熱導体とを備えている請求項１記載の高周波加
熱コイル。3. The first heating coil is connected to a power supply conductor at one end thereof and is arranged in the circumferential direction of the first outer peripheral surface so as to closely face and face the first outer peripheral surface. First of pair
The heating conductor and a pair of linear second heating conductors, one end of which is connected to the other end of the first heating conductor and which are arranged in the axial direction of the work so as to approach and face the first outer peripheral surface, It is connected to the other end of the second heating conductor and is disposed in the circumferential direction of the first outer peripheral surface so as to approach and face the first outer peripheral surface on the side opposite to the side on which the first heating conductor is disposed. A pair of third arc-shaped heating conductors, and one end of the second heating coil is connected to the other end of the third heating conductor through the connection conductor, and the second heating coil is not smaller than the first and third heating conductors. 1 having a diameter and arranged in the circumferential direction of the second outer peripheral surface so as to closely approach and oppose the second outer peripheral surface.
A pair of fifth heating conductors and a pair of linear sixth heating conductors, one end of which is connected to the other end of the fifth heating conductor and which are arranged in the axial direction of the workpiece so as to closely face and face the second outer peripheral surface. And a seventh heating conductor which is connected between the other ends of the sixth heating conductors and which is arranged in the circumferential direction of the second outer circumferential surface so as to closely approach and face the second outer circumferential surface and which has a substantially arc shape. The high frequency heating coil according to claim 1.
に接続され、第１外周面に接近対向するように第１外周
面の周方向に配設されたほぼ１／４円弧状の１対の第８
加熱導体と、第８加熱導体の他端に一端が接続され、ワ
ークの軸方向の外周面の形状に対応するように形成され
ていると共に、第１外周面に接近対向するようにワーク
の軸方向に配設された１対の第９加熱導体と、一端が第
２加熱導体の他端に接続され、第１外周面に接近対向す
るように第１外周面の周方向に配設されたほぼ１／４円
弧状の１対の第10加熱導体とを備え、 第２加熱コイルは、一端が前記接続導体を介して第10加
熱導体の他端に接続され、第８および第10加熱導体の径
より小さくない径を有し、第２外周面に接近対向するよ
うに第２外周面の周方向に配設されたほぼ１／４円弧状
の１対の第11加熱導体と、一端が第11加熱導体の他端に
接続され、第２外周面に接近対向するようにワークの軸
方向に配設された１対の直線状の第12加熱導体と、第12
加熱導体の他端間に接続され、第２外周面に接近対向す
るように第２外周面の周方向に配設されたほぼ１／２円
弧状の第13加熱導体とを備えている請求項１記載の高周
波加熱コイル。4. The first heating coil is connected to a power supply conductor at one end, and is arranged in the circumferential direction of the first outer peripheral surface so as to closely face and face the first outer peripheral surface. Eighth of the pair
One end is connected to the other end of the heating conductor and the eighth heating conductor, and is formed so as to correspond to the shape of the outer peripheral surface in the axial direction of the work, and the shaft of the work is close to and facing the first outer peripheral surface. And a pair of ninth heating conductors arranged in a direction, one end of which is connected to the other end of the second heating conductor, and which are arranged in the circumferential direction of the first outer peripheral surface so as to approach and face the first outer peripheral surface. A pair of tenth heating conductors each having a substantially quarter arc shape, one end of the second heating coil is connected to the other end of the tenth heating conductor via the connecting conductor, and the eighth and tenth heating conductors are provided. And a pair of eleventh heating conductors each having an approximately ¼ arc shape and arranged in the circumferential direction of the second outer peripheral surface so as to closely approach and oppose the second outer peripheral surface, and one end thereof. Connected to the other end of the eleventh heating conductor, a pair of linear twelfth processing members arranged in the axial direction of the work so as to approach and face the second outer peripheral surface. Thermal conductor, 12th
A thirteenth heating conductor which is connected between the other ends of the heating conductors and which is arranged in the circumferential direction of the second outer peripheral surface so as to closely approach and oppose the second outer peripheral surface, and which has a substantially arcuate shape. 1. The high frequency heating coil according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992053428U JP2531332Y2 (en) | 1992-07-06 | 1992-07-06 | High frequency heating coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992053428U JP2531332Y2 (en) | 1992-07-06 | 1992-07-06 | High frequency heating coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH069091U true JPH069091U (en) | 1994-02-04 |
| JP2531332Y2 JP2531332Y2 (en) | 1997-04-02 |
Family
ID=12942571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992053428U Expired - Lifetime JP2531332Y2 (en) | 1992-07-06 | 1992-07-06 | High frequency heating coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2531332Y2 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS507725A (en) * | 1973-05-24 | 1975-01-27 | ||
| JPS60109298U (en) * | 1983-12-27 | 1985-07-24 | 富士電子工業株式会社 | high frequency induction heating coil |
| JPS633098U (en) * | 1986-06-25 | 1988-01-09 | ||
| JPS6330345U (en) * | 1986-08-11 | 1988-02-27 | ||
| JPS6330344U (en) * | 1986-08-11 | 1988-02-27 |
-
1992
- 1992-07-06 JP JP1992053428U patent/JP2531332Y2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS507725A (en) * | 1973-05-24 | 1975-01-27 | ||
| JPS60109298U (en) * | 1983-12-27 | 1985-07-24 | 富士電子工業株式会社 | high frequency induction heating coil |
| JPS633098U (en) * | 1986-06-25 | 1988-01-09 | ||
| JPS6330345U (en) * | 1986-08-11 | 1988-02-27 | ||
| JPS6330344U (en) * | 1986-08-11 | 1988-02-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2531332Y2 (en) | 1997-04-02 |
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