JP6310488B2 - Manufacturing method of structure - Google Patents

Manufacturing method of structure Download PDF

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JP6310488B2
JP6310488B2 JP2016015884A JP2016015884A JP6310488B2 JP 6310488 B2 JP6310488 B2 JP 6310488B2 JP 2016015884 A JP2016015884 A JP 2016015884A JP 2016015884 A JP2016015884 A JP 2016015884A JP 6310488 B2 JP6310488 B2 JP 6310488B2
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coil
tubular member
fixing
axial direction
beam member
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JP2017131959A (en
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一正 海読
一正 海読
今村　美速
美速 今村
孝良 杉崎
孝良 杉崎
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Kobe Steel Ltd
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Description

本発明は、金属管からなる管状部材の外周に他の部材が取り付けられた構造体の製造方法に関する。   The present invention relates to a method for manufacturing a structure in which another member is attached to the outer periphery of a tubular member made of a metal tube.

自動車の部品は、コストや溶接などの施工性の観点から鋼部材が多く用いられている。近年の燃費の向上の要求から、鋼部材の一部を軽量な部材で置き換えることが行われており、パネル部材の他、フレーム部材にもそのような軽量化部材を適用することが検討されている。このような軽量構造部材としては、アルミニウム合金が好適に用いられる。   Steel parts are often used for automobile parts from the viewpoint of cost and workability such as welding. In recent years, due to demands for improving fuel efficiency, replacement of part of steel members with lightweight members has been carried out, and it has been considered to apply such lightweight members to frame members in addition to panel members. Yes. As such a lightweight structural member, an aluminum alloy is preferably used.

ところで、フレーム部材にブラケット部材を溶接して固着すると、溶接時の熱によってフレーム部材が熱変形するおそれがある。このため、溶接時の熱変形を抑止する固着方法として、管状部材を拡管させることで、その外周側のブラケット部材を固着させるかしめによる固着が検討されている。   By the way, if the bracket member is welded and fixed to the frame member, the frame member may be thermally deformed by heat during welding. For this reason, as a fixing method for suppressing thermal deformation at the time of welding, fixing by caulking to fix the outer peripheral side bracket member by expanding the tubular member has been studied.

このかしめによる固着方法としては、管状部材の内部に配置させたコイルに通電することで発生する電磁力により管状部材を拡管させ、外周側のブラケットを固着させる電磁成形がある（例えば、特許文献１，２参照）。   As a fixing method by caulking, there is electromagnetic forming in which the tubular member is expanded by electromagnetic force generated by energizing a coil disposed inside the tubular member, and the outer bracket is fixed (for example, Patent Document 1). , 2).

特開２００２−１６００３２号公報JP 2002-160032 A 特開２００４−２３７３４８号公報JP 2004-237348 A

ところで、上記特許文献１の技術は、管状部材の全長にわたって通したコイルに通電して管状部材を全長にわたって拡管させるものであり、また、特許文献２の技術は、管状部材の両端部に挿し込んだコイルに通電して管状部材の両端部を拡管させるものである。
このため、特許文献１，２の技術では、例えば、車両のインストルメントパネル内に設けられるレインフォースなどの長尺の管状部材の軸方向の中間部分における複数箇所を個別に拡管させてブラケット部材などを固着させることは困難であった。 By the way, the technique of the said patent document 1 energizes the coil passed through the full length of the tubular member, and expands a tubular member over the full length, and the technique of patent document 2 is inserted in the both ends of a tubular member. The coil is energized to expand both ends of the tubular member.
For this reason, in the techniques of Patent Documents 1 and 2, for example, a bracket member or the like is provided by individually expanding a plurality of locations in an axial intermediate portion of a long tubular member such as a reinforcement provided in an instrument panel of a vehicle. It was difficult to fix.

本発明は、管状部材に対して、その軸方向の中間部分における複数箇所に他の部材が固着された構造体を容易に製造することが可能な構造体の製造方法を提供することを目的としている。   It is an object of the present invention to provide a method for manufacturing a structure capable of easily manufacturing a structure in which other members are fixed to a tubular member at a plurality of positions in an intermediate portion in the axial direction. Yes.

本発明は下記構成からなる。
金属管からなる管状部材の軸方向の複数の所定位置に他の部材がそれぞれ取り付けられた構造体の製造方法であって、
前記他の部材に形成された取付孔に前記管状部材を挿通させて前記管状部材の複数の前記所定位置に前記他の部材をそれぞれ配置する部材配置工程と、
支持棒にコイルが連結されたコイルユニットの前記コイルを前記管状部材の端部から内部に挿し込む挿入工程と、
前記コイルユニットを軸方向へ移動させて前記コイルを前記所定位置に対応する位置に配置させるコイル配置工程と、
前記管状部材の外部に延在する前記支持棒を固定することで前記コイルの軸方向の移動を規制するコイル固定工程と、
前記コイルに通電することで発生する電磁力により前記管状部材を拡管させ、前記管状部材に前記他の部材をかしめて固着させる固着工程と、
前記支持棒の固定を解除する固定解除工程と、
を含み、
前記コイル配置工程、前記コイル固定工程、前記固着工程、及び前記固定解除工程を、複数の前記所定位置において順に繰返し行い、複数の前記所定位置で前記管状部材を個別に拡管させ、前記管状部材に前記他の部材をそれぞれ固着させる
ことを特徴とする構造体の製造方法。
また、前記コイル固定工程では、前記支持棒を前記管状部材の外部で固定具によって締結して、前記コイルの移動を規制することであってもよい。
また、前記挿入工程、前記コイル配置工程、前記コイル固定工程及び前記固着工程を、前記管状部材の両端側から行うことであってもよい。 The present invention has the following configuration.
A method of manufacturing a structure in which other members are respectively attached to a plurality of predetermined positions in the axial direction of a tubular member made of a metal tube,
A member placing step of placing each multiple of the other member to the predetermined position of the tubular member by inserting the tubular member into a mounting hole formed in the other member,
An insertion step of inserting the coil of the coil unit in which the coil is connected to the support rod from the end of the tubular member;
A coil placement step of moving the coil unit in the axial direction to place the coil at a position corresponding to the predetermined position;
A coil fixing step of restricting movement of the coil in the axial direction by fixing the support rod extending to the outside of the tubular member;
A fixing step of expanding the tubular member by electromagnetic force generated by energizing the coil, and caulking and fixing the other member to the tubular member;
A fixing release step for releasing the fixing of the support rod;
Including
The coil placement step, the coil fixing step, the fixing step, and the unlocking step, have rows repeatedly in this order in a plurality of predetermined positions, by tube expansion individually said tubular member at a plurality of predetermined positions, the tubular member A method for manufacturing a structure , wherein the other members are fixed to each other .
Further, in the coil fixing step, the support rod may be fastened by a fixing tool outside the tubular member to restrict movement of the coil.
Moreover, you may perform the said insertion process, the said coil arrangement | positioning process, the said coil fixing process, and the said adhering process from the both ends side of the said tubular member.

本発明の構造体の製造方法によれば、管状部材に対して、その軸方向の中間部分における複数箇所に他の部材が固着された構造体を容易に製造することができる。   According to the structure manufacturing method of the present invention, it is possible to easily manufacture a structure in which other members are fixed to a tubular member at a plurality of locations in an intermediate portion in the axial direction.

本発明の構造体の製造方法によって製造する構造体の一例であるレインフォースの斜視図である。It is a perspective view of the reinforcement which is an example of the structure manufactured with the manufacturing method of the structure of this invention. 本発明に係る第１の構造体の製造方法の部材配置工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。It is process explanatory drawing explaining the member arrangement | positioning process of the manufacturing method of the 1st structure which concerns on this invention, and is a schematic sectional drawing in alignment with the axial direction of a beam member. 本発明に係る第１の構造体の製造方法の挿入工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。It is process explanatory drawing explaining the insertion process of the manufacturing method of the 1st structure which concerns on this invention, and is a schematic sectional drawing in alignment with the axial direction of a beam member. 本発明に係る第１の構造体の製造方法のコイル配置工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。It is process explanatory drawing explaining the coil arrangement | positioning process of the manufacturing method of the 1st structure which concerns on this invention, and is schematic sectional drawing in alignment with the axial direction of a beam member. 本発明に係る第１の構造体の製造方法のコイル固定工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。It is process explanatory drawing explaining the coil fixing process of the manufacturing method of the 1st structure which concerns on this invention, and is schematic sectional drawing in alignment with the axial direction of a beam member. 本発明に係る第１の構造体の製造方法の固着工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。It is process explanatory drawing explaining the adhering process of the manufacturing method of the 1st structure which concerns on this invention, and is a schematic sectional drawing in alignment with the axial direction of a beam member. 本発明に係る第１の構造体の製造方法のコイル配置工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。It is process explanatory drawing explaining the coil arrangement | positioning process of the manufacturing method of the 1st structure which concerns on this invention, and is schematic sectional drawing in alignment with the axial direction of a beam member. 本発明に係る第１の構造体の製造方法のコイル固定工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。It is process explanatory drawing explaining the coil fixing process of the manufacturing method of the 1st structure which concerns on this invention, and is schematic sectional drawing in alignment with the axial direction of a beam member. 本発明に係る第１の構造体の製造方法の固着工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。It is process explanatory drawing explaining the adhering process of the manufacturing method of the 1st structure which concerns on this invention, and is a schematic sectional drawing in alignment with the axial direction of a beam member. 本発明に係る第２の構造体の製造方法の挿入工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。It is process explanatory drawing explaining the insertion process of the manufacturing method of the 2nd structure which concerns on this invention, and is a schematic sectional drawing in alignment with the axial direction of a beam member. 本発明に係る第２の構造体の製造方法のコイル配置工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。It is process explanatory drawing explaining the coil arrangement | positioning process of the manufacturing method of the 2nd structure which concerns on this invention, and is a schematic sectional drawing in alignment with the axial direction of a beam member. 本発明に係る第２の構造体の製造方法のコイル固定工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。It is process explanatory drawing explaining the coil fixing process of the manufacturing method of the 2nd structure which concerns on this invention, and is a schematic sectional drawing in alignment with the axial direction of a beam member. 本発明に係る第２の構造体の製造方法の固着工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。It is process explanatory drawing explaining the adhering process of the manufacturing method of the 2nd structure which concerns on this invention, and is schematic sectional drawing in alignment with the axial direction of a beam member.

以下、本発明の実施形態について、図面を参照して詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

＜第１の構造体の製造方法＞
まず、第１の構造体の製造方法について説明する。
図１は、構造体の一例であるレインフォースの斜視図である。 <Method for Manufacturing First Structure>
First, the manufacturing method of the first structure will be described.
FIG. 1 is a perspective view of a reinforcement which is an example of a structure.

ここでの構造体は、自動車等の車両のインストルメントパネル内に設けられるレインフォース１を一例として説明するが、これに限らない。   Although the structure here demonstrates as an example the reinforcement 1 provided in the instrument panel of vehicles, such as a motor vehicle, it is not restricted to this.

図１に示すように、レインフォース１は、管状部材であるビーム部材２と、このビーム部材２の外周に設けられた他の部材であるブラケット部材３とを有している。ビーム部材２は、長尺筒状に形成されている。このビーム部材２には、レインフォース１を車両のボディに固定するための固定部材４及びレインフォース１にステアリングを支持させる支持部材５が固定される。   As shown in FIG. 1, the reinforcement 1 includes a beam member 2 that is a tubular member, and a bracket member 3 that is another member provided on the outer periphery of the beam member 2. The beam member 2 is formed in a long cylindrical shape. Fixed to the beam member 2 are a fixing member 4 for fixing the reinforcement 1 to the body of the vehicle and a support member 5 for supporting the steering to the reinforcement 1.

このビーム部材２は、非磁性体の金属管であり、例えば、アルミニウムまたはアルミニウム合金からなる押出材である。ブラケット部材３は、例えば、インストルメントパネルを構成する部材等に固定される。ブラケット部材３は、アルミニウムまたはアルミニウム合金などの金属材料から形成されたもので、例えば、鋳物あるいは展伸材である。なお、ブラケット部材３としては、アルミニウムまたはアルミニウム合金に限らず他の金属材料であってもよく、また、硬質樹脂材料から形成されたものでもよい。ブラケット部材３は、ビーム部材２の外周に一体的に設けられている。ビーム部材２は、ブラケット部材３の固着箇所が、径方向外方へ拡径された拡径部６とされている。   The beam member 2 is a non-magnetic metal tube, for example, an extruded material made of aluminum or an aluminum alloy. The bracket member 3 is fixed to, for example, a member constituting the instrument panel. The bracket member 3 is formed from a metal material such as aluminum or an aluminum alloy, and is, for example, a casting or a wrought material. The bracket member 3 is not limited to aluminum or an aluminum alloy, and may be another metal material, or may be formed from a hard resin material. The bracket member 3 is integrally provided on the outer periphery of the beam member 2. The beam member 2 is a diameter-enlarged portion 6 in which the fixing portion of the bracket member 3 is expanded radially outward.

次に、ビーム部材２の外周に複数のブラケット部材３が設けられた上記構造のレインフォース１を製造する本実施形態に係る製造方法を、その工程毎に説明する。   Next, a manufacturing method according to this embodiment for manufacturing the reinforcement 1 having the above structure in which a plurality of bracket members 3 are provided on the outer periphery of the beam member 2 will be described for each step.

（部材配置工程）
図２は、部材配置工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。
図２に示すように、拡径部６を成形する前のビーム部材２を用意し、このビーム部材２をブラケット部材３に形成された取付孔３ａに挿通させる。そして、ビーム部材２の外周における軸方向の所定位置にブラケット部材３を配置する。そして、このビーム部材２の第一拡径部２Ａ及び第二拡径部２Ｂの外周の所定位置にブラケット部材３を配置する。 (Component placement process)
FIG. 2 is a process explanatory view for explaining a member arrangement process, and is a schematic sectional view along the axial direction of the beam member.
As shown in FIG. 2, a beam member 2 before forming the enlarged diameter portion 6 is prepared, and the beam member 2 is inserted into an attachment hole 3 a formed in the bracket member 3. Then, the bracket member 3 is disposed at a predetermined position in the axial direction on the outer periphery of the beam member 2. And the bracket member 3 is arrange | positioned in the predetermined position of the outer periphery of 2 A of 1st enlarged diameter parts and the 2nd enlarged diameter part 2B of this beam member 2. As shown in FIG.

（挿入工程）
図３は挿入工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。
図３に示すように、ビーム部材２の内部に、ビーム部材２の端部からコイル２１を挿し込む。このコイル２１は、ボビン部２１ａと導体素線２１ｂとを備えている。ボビン部２１ａは絶縁性樹脂を棒状に形成したもので、このボビン部２１ａの周囲に導体素線２１ｂが巻回されている。導体素線２１ｂは、矩形または正方形の断面形状を有しており、その周囲は、絶縁性物質２１ｃで覆われている。コイル２１は、支持棒２２の端部に固着されている。支持棒２２は、剛性を有する棒体からなるもので、例えば、合成樹脂からなるパイプが用いられる。そして、このコイル２１と支持棒２２とから、コイルユニット２０が構成されている。 (Insertion process)
FIG. 3 is a process explanatory view for explaining the insertion process, and is a schematic sectional view along the axial direction of the beam member.
As shown in FIG. 3, the coil 21 is inserted into the beam member 2 from the end of the beam member 2. The coil 21 includes a bobbin portion 21a and a conductor element wire 21b. The bobbin portion 21a is formed by forming an insulating resin in a rod shape, and a conductor wire 21b is wound around the bobbin portion 21a. The conductor wire 21b has a rectangular or square cross-sectional shape, and the periphery thereof is covered with an insulating material 21c. The coil 21 is fixed to the end of the support bar 22. The support rod 22 is made of a rigid rod, and for example, a pipe made of synthetic resin is used. The coil unit 20 is constituted by the coil 21 and the support rod 22.

（コイル配置工程）
図４は、コイル配置工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。
図４に示すように、コイルユニット２０を軸方向へ移動させ、ビーム部材２の内部に挿入したコイル２１を、ブラケット部材３を固着させる所定位置に対応する位置に配置させる。具体的には、コイル２１を挿入したビーム部材２の端部に近い第一拡径部２Ａにおける所定位置に対応する位置に配置させる。 (Coil arrangement process)
FIG. 4 is a process explanatory view for explaining the coil arrangement process, and is a schematic sectional view along the axial direction of the beam member.
As shown in FIG. 4, the coil unit 20 is moved in the axial direction, and the coil 21 inserted into the beam member 2 is disposed at a position corresponding to a predetermined position where the bracket member 3 is fixed. Specifically, the coil 21 is disposed at a position corresponding to a predetermined position in the first enlarged diameter portion 2A near the end of the beam member 2 into which the coil 21 is inserted.

（コイル固定工程）
図５は、コイル固定工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。
図５に示すように、ビーム部材２の外部に延在するコイルユニット２０の支持棒２２を、ビーム部材２の外部で固定具３０によって締結する。固定具３０は、ビーム部材２を固定するテーブル（図示略）に固定される固定台３１と、支持棒２２を締結する締結部３２とを有している。そして、この固定具３０によって支持棒２２を締結することで、コイル２１は、ビーム部材２の内部における所定位置に対応した位置に配置された状態で固定され、軸方向への移動が規制される。 (Coil fixing process)
FIG. 5 is a process explanatory view for explaining the coil fixing process and is a schematic sectional view along the axial direction of the beam member.
As shown in FIG. 5, the support rod 22 of the coil unit 20 extending to the outside of the beam member 2 is fastened by the fixture 30 outside the beam member 2. The fixing tool 30 has a fixing base 31 fixed to a table (not shown) for fixing the beam member 2 and a fastening portion 32 for fastening the support rod 22. Then, by fastening the support rod 22 with the fixing tool 30, the coil 21 is fixed in a state where it is arranged at a position corresponding to a predetermined position inside the beam member 2, and the movement in the axial direction is restricted. .

（固着工程）
図６は、固着工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。
図６に示すように、コイルユニット２０のコイル２１に通電することで、このコイル２１に瞬間的に大電流を流して電磁力を発生させる。これにより、この電磁力によってビーム部材２におけるコイル２１の配置箇所を径方向外方へ拡管させて拡径部６を形成する。これにより、このビーム部材２の第一拡径部２Ａにおける外周をブラケット部材３にかしめて固着する。 (Fixing process)
FIG. 6 is a process explanatory view for explaining the fixing process, and is a schematic sectional view along the axial direction of the beam member.
As shown in FIG. 6, by energizing the coil 21 of the coil unit 20, a large current is instantaneously passed through the coil 21 to generate an electromagnetic force. Thereby, the arrangement | positioning location of the coil 21 in the beam member 2 is expanded radially outward by this electromagnetic force, and the diameter expansion part 6 is formed. As a result, the outer periphery of the first enlarged diameter portion 2 </ b> A of the beam member 2 is caulked and fixed to the bracket member 3.

（コイル配置工程）
図７は、コイル配置工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。
図７に示すように、固定具３０による支持棒２２の締結を解除し、コイルユニット２０を軸方向へ移動させる。そして、ビーム部材２の内部のコイル２１を、ブラケット部材３を固着させる次の所定位置である第二拡径部２Ｂにおける所定位置に対応する位置に配置させる。 (Coil arrangement process)
FIG. 7 is a process explanatory view for explaining the coil placement process, and is a schematic sectional view along the axial direction of the beam member.
As shown in FIG. 7, the fastening of the support rod 22 by the fixture 30 is released, and the coil unit 20 is moved in the axial direction. Then, the coil 21 inside the beam member 2 is disposed at a position corresponding to a predetermined position in the second enlarged diameter portion 2B, which is a next predetermined position where the bracket member 3 is fixed.

（コイル固定工程）
図８は、コイル固定工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。
図８に示すように、ビーム部材２の外部に延在するコイルユニット２０の支持棒２２を、ビーム部材２の外部で固定具３０によって締結してコイル２１を固定し、コイル２１の軸方向への移動を規制させる。 (Coil fixing process)
FIG. 8 is a process explanatory view for explaining the coil fixing process and is a schematic sectional view along the axial direction of the beam member.
As shown in FIG. 8, the support rod 22 of the coil unit 20 extending to the outside of the beam member 2 is fastened by the fixture 30 outside the beam member 2 to fix the coil 21, and the coil 21 is moved in the axial direction. Restrict the movement of

（固着工程）
図９は、固着工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。
図９に示すように、コイルユニット２０のコイル２１に通電することで、このコイル２１に瞬間的に大電流を流して電磁力を発生させる。これにより、この電磁力によってビーム部材２におけるコイル２１の配置箇所を径方向外方へ拡管させて拡径部６を形成する。これにより、このビーム部材２の第二拡径部２Ｂにおける外周にブラケット部材３をかしめて固着する。 (Fixing process)
FIG. 9 is a process explanatory view for explaining the fixing process, and is a schematic cross-sectional view along the axial direction of the beam member.
As shown in FIG. 9, by energizing the coil 21 of the coil unit 20, a large current is instantaneously passed through the coil 21 to generate an electromagnetic force. Thereby, the arrangement | positioning location of the coil 21 in the beam member 2 is expanded radially outward by this electromagnetic force, and the diameter expansion part 6 is formed. Thereby, the bracket member 3 is caulked and fixed to the outer periphery of the second enlarged diameter portion 2B of the beam member 2.

このように、第１の構造体の製造方法では、ビーム部材２の複数の所定位置にそれぞれブラケット部材３を配置させ、ビーム部材２の端部からコイル２１を挿し込んだ後、それぞれの所定位置に対して、上記のコイル配置工程、コイル固定工程及び固着工程を順に繰り返し行う。これにより、ビーム部材２の個別に拡管させた複数の所定位置にブラケット部材３がそれぞれ固着されたレインフォース１が得られる。   As described above, in the first structure manufacturing method, the bracket member 3 is disposed at each of a plurality of predetermined positions of the beam member 2, and the coil 21 is inserted from the end of the beam member 2. On the other hand, the coil placement step, the coil fixing step, and the fixing step are repeated in order. Thereby, the reinforcement 1 to which the bracket member 3 was each fixed to the several predetermined position expanded individually of the beam member 2 is obtained.

この第１の構造体の製造方法によれば、ビーム部材２に挿入したコイルユニット２０のコイル２１を軸方向に移動させて各所定位置で電磁成形によってビーム部材２を拡管させることで、ビーム部材２の軸方向の複数箇所にブラケット部材３を固着することができる。これにより、例えば、車両用のレインフォース１などのような長尺のビーム部材２に対して、その軸方向の中間部分における複数箇所にブラケット部材３を容易に固着させることができる。   According to this first structure manufacturing method, the coil 21 of the coil unit 20 inserted in the beam member 2 is moved in the axial direction, and the beam member 2 is expanded by electromagnetic forming at each predetermined position. The bracket member 3 can be fixed to a plurality of locations in the axial direction. Accordingly, for example, the bracket member 3 can be easily fixed to a long beam member 2 such as a vehicle reinforcement 1 at a plurality of positions in an intermediate portion in the axial direction.

また、コイル２１に通電して電磁成形する前に支持棒２２をビーム部材２の外部で固定してコイル２１の軸方向への移動を規制させるので、位置ずれなく円滑にビーム部材２を拡管させてブラケット部材３をかしめて固着させることができる。   Further, before the coil 21 is energized and electromagnetically formed, the support rod 22 is fixed outside the beam member 2 to restrict the movement of the coil 21 in the axial direction, so that the beam member 2 can be smoothly expanded without displacement. The bracket member 3 can be caulked and fixed.

また、第１の構造体の製造方法では、電磁成形によってビーム部材２を拡管させるので、例えば、ビーム部材２の内部に充填した液体の圧力によってビーム部材２を拡管させる液圧成形方式（ハイドロフォーム方式）やビーム部材２の内部に気体を充填して圧力を付与してビーム部材２を拡管させるブロー成形方式と比較し、ビーム部材２の所定位置を部分的に拡管させることができる。また、液体や気体の漏れを防ぐためのシール構造及び成形後の液体や気体の処理作業を不要にでき、しかも、ビーム部材２における拡管位置や拡管範囲を容易に調整することができる。また、周方向に分割された複数の分割体をビーム部材２の内部に配置し、分割体の配置の中心に楔を挿し込むことで分割体を径方向外方へ広げてビーム部材２を内部から押し広げる機械成形方式（メカニカル方式）と比較し、均等に拡管することができ、また、拡管後に潤滑油を洗浄する洗浄作業などを行う必要もない。   In the first structure manufacturing method, since the beam member 2 is expanded by electromagnetic forming, for example, a hydroforming method (hydroform) in which the beam member 2 is expanded by the pressure of the liquid filled in the beam member 2. Compared with the blow molding method in which the beam member 2 is expanded by filling the inside of the beam member 2 with gas and applying pressure, the predetermined position of the beam member 2 can be partially expanded. Further, the sealing structure for preventing leakage of liquid and gas and the processing operation of the liquid and gas after molding can be made unnecessary, and the tube expansion position and the tube expansion range in the beam member 2 can be easily adjusted. Further, a plurality of divided bodies divided in the circumferential direction are arranged inside the beam member 2, and a wedge is inserted into the center of the arrangement of the divided bodies to expand the divided body radially outward so that the beam member 2 is inside. Compared to a mechanical molding method (mechanical method) that spreads out from the tube, the tube can be expanded uniformly, and there is no need to perform a cleaning operation for cleaning the lubricating oil after the tube expansion.

＜第２の構造体の製造方法＞
次に、第２の構造体の製造方法ついて説明する。なお、上記第１の構造体の製造方法と同一構成部分は同一符号を付して説明を省略する。 <Method for Manufacturing Second Structure>
Next, a method for manufacturing the second structure will be described. Note that the same components as those in the first structure manufacturing method are denoted by the same reference numerals and description thereof is omitted.

（部材配置工程）
拡径部６を成形する前のビーム部材２を用意し、このビーム部材２をブラケット部材３に形成された取付孔３ａに挿通させる。そして、ビーム部材２の外周における軸方向の所定位置にブラケット部材３を配置する。これにより、このビーム部材２の第一拡径部２Ａ及び第二拡径部２Ｂの外周の所定位置にブラケット部材３を配置する（図２参照）。 (Component placement process)
A beam member 2 before forming the enlarged diameter portion 6 is prepared, and the beam member 2 is inserted into an attachment hole 3 a formed in the bracket member 3. Then, the bracket member 3 is disposed at a predetermined position in the axial direction on the outer periphery of the beam member 2. Thereby, the bracket member 3 is arrange | positioned in the predetermined position of the outer periphery of 2 A of 1st enlarged diameter parts and the 2nd enlarged diameter part 2B of this beam member 2 (refer FIG. 2).

（挿入工程）
図１０は、挿入工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。
図１０に示すように、ビーム部材２の内部に、ビーム部材２の端部から複数のコイル２１を挿し込む。これらのコイル２１は、支持棒２２によって軸方向に連結されている。そして、これらのコイル２１と支持棒２２とから、コイルユニット２０Ａが構成されている。 (Insertion process)
FIG. 10 is a process explanatory view for explaining the insertion process, and is a schematic sectional view along the axial direction of the beam member.
As shown in FIG. 10, a plurality of coils 21 are inserted into the beam member 2 from the end of the beam member 2. These coils 21 are connected in the axial direction by support rods 22. The coil unit 20 </ b> A is composed of the coil 21 and the support rod 22.

（コイル配置工程）
図１１は、コイル配置工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。
図１１に示すように、コイルユニット２０Ａを軸方向へ移動させ、ビーム部材２の内部に挿入した各コイル２１を、ブラケット部材３を固着させる所定位置に対応する位置にそれぞれ配置させる。具体的には、第一拡径部２Ａにおける所定位置に対応する位置及び第二拡径部２Ｂにおける所定位置に対応する位置にそれぞれコイル２１を配置させる。 (Coil arrangement process)
FIG. 11 is a process explanatory view for explaining the coil arrangement process and is a schematic sectional view along the axial direction of the beam member.
As shown in FIG. 11, the coil unit 20 </ b> A is moved in the axial direction, and each coil 21 inserted into the beam member 2 is arranged at a position corresponding to a predetermined position where the bracket member 3 is fixed. Specifically, the coil 21 is arranged at a position corresponding to a predetermined position in the first enlarged diameter portion 2A and a position corresponding to a predetermined position in the second enlarged diameter portion 2B.

（コイル固定工程）
図１２は、コイル固定工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。
図１２に示すように、ビーム部材２の外部に延在するコイルユニット２０Ａの支持棒２２を、ビーム部材２の外部で固定具３０によって締結してコイル２１を固定し、コイル２１の軸方向への移動を規制させる。 (Coil fixing process)
FIG. 12 is a process explanatory view for explaining the coil fixing process and is a schematic sectional view along the axial direction of the beam member.
As shown in FIG. 12, the support rod 22 of the coil unit 20 </ b> A extending to the outside of the beam member 2 is fastened by the fixture 30 outside the beam member 2 to fix the coil 21, and the coil 21 is moved in the axial direction. Restrict the movement of

（固着工程）
図１３は、製造方法の固着工程を説明する工程説明図で、ビーム部材の軸方向に沿う概略断面図である。
図１３に示すように、コイルユニット２０Ａのそれぞれのコイル２１に通電することで、これらのコイル２１に瞬間的に大電流を流して電磁力を発生させる。これにより、この電磁力によってビーム部材２におけるコイル２１の配置箇所をそれぞれ径方向外方へ拡管させて拡径部６を形成する。これにより、このビーム部材２の第一拡径部２Ａ及び第二拡径部２Ｂにおける外周をブラケット部材３にそれぞれかしめて固着する。これにより、ビーム部材２の個別に拡管させた複数の所定位置にブラケット部材３がそれぞれ固着されたレインフォース１が得られる。 (Fixing process)
FIG. 13 is a process explanatory view for explaining the fixing process of the manufacturing method, and is a schematic sectional view along the axial direction of the beam member.
As shown in FIG. 13, by energizing each coil 21 of the coil unit 20 </ b> A, a large current is instantaneously passed through these coils 21 to generate electromagnetic force. Thereby, the arrangement | positioning location of the coil 21 in the beam member 2 is each expanded radially outward by this electromagnetic force, and the enlarged diameter part 6 is formed. As a result, the outer circumferences of the first enlarged diameter portion 2A and the second enlarged diameter portion 2B of the beam member 2 are caulked and fixed to the bracket member 3, respectively. Thereby, the reinforcement 1 to which the bracket member 3 was each fixed to the several predetermined position expanded individually of the beam member 2 is obtained.

この第２の構造体の製造方法によれば、ビーム部材２に挿入したコイルユニット２０Ａの複数のコイル２１をそれぞれ所定位置に配置させて電磁成形によってビーム部材２を同時に拡管させることで、ビーム部材２の軸方向の複数箇所にブラケット部材３を同時に固着することができる。これにより、例えば、車両用のレインフォース１などのような長尺のビーム部材２に対して、その軸方向の中間部分における複数箇所にブラケット部材３を容易に固着させることができる。   According to this second structure manufacturing method, the plurality of coils 21 of the coil unit 20A inserted into the beam member 2 are respectively arranged at predetermined positions, and the beam member 2 is expanded at the same time by electromagnetic forming. The bracket member 3 can be simultaneously fixed at a plurality of locations in the axial direction. Accordingly, for example, the bracket member 3 can be easily fixed to a long beam member 2 such as a vehicle reinforcement 1 at a plurality of positions in an intermediate portion in the axial direction.

また、コイル２１に通電して電磁成形する前に支持棒２２をビーム部材２の外部で固定してコイル２１の軸方向への移動を規制させるので、位置ずれなく円滑にビーム部材２を拡管させてブラケット部材３にかしめて固着させることができる。   Further, before the coil 21 is energized and electromagnetically formed, the support rod 22 is fixed outside the beam member 2 to restrict the movement of the coil 21 in the axial direction, so that the beam member 2 can be smoothly expanded without displacement. The bracket member 3 can be caulked and fixed.

また、第２の構造体の製造方法の場合も、電磁成形によってビーム部材２を拡管させるので、液圧成形方式やフロー成形方式と比較し、ビーム部材２の所定位置を部分的に拡管させることができる。また、液体や気体の漏れを防ぐためのシール構造及び成形後の液体や気体の処理作業を不要にでき、しかも、ビーム部材２における拡管位置や拡管範囲を容易に調整することができる。また、機械成形方式と比較し、均等に拡管することができ、また、拡管後に潤滑油を洗浄する洗浄作業などを行う必要もない。   Also, in the case of the manufacturing method of the second structure, since the beam member 2 is expanded by electromagnetic forming, a predetermined position of the beam member 2 is partially expanded as compared with the hydraulic forming method or the flow forming method. Can do. Further, the sealing structure for preventing leakage of liquid and gas and the processing operation of the liquid and gas after molding can be made unnecessary, and the tube expansion position and the tube expansion range in the beam member 2 can be easily adjusted. Further, compared with the mechanical molding method, the pipes can be expanded uniformly, and it is not necessary to perform a cleaning operation for cleaning the lubricating oil after the pipe expansion.

なお、第２の構造体の製造方法において、複数のコイル２１でビーム部材２を拡管させて複数の所定位置でブラケット部材３にかしめて固着した後、他の所定位置にブラケット部材３を固着させるべく、コイル配置工程、コイル固定工程及び固着工程を繰り返し行っても良い。   In the second structure manufacturing method, the beam member 2 is expanded by a plurality of coils 21 and caulked and fixed to the bracket member 3 at a plurality of predetermined positions, and then the bracket member 3 is fixed to another predetermined position. Therefore, the coil placement step, the coil fixing step, and the fixing step may be repeated.

このようにすれば、ビーム部材２に挿入したコイルユニット２０Ａの複数のコイル２１でビーム部材２を複数の所定位置で同時に拡管させ、さらに、コイルユニット２０Ａを軸方向に移動させて複数のコイル２１でビーム部材２の他の複数の所定位置を同時に拡管させることで、ビーム部材２の軸方向の複数箇所にブラケット部材３を極めて容易にかつ短時間で固着することができる。   In this way, the plurality of coils 21 of the coil unit 20A inserted into the beam member 2 are used to simultaneously expand the beam member 2 at a plurality of predetermined positions, and further the coil unit 20A is moved in the axial direction so as to move the plurality of coils 21. Thus, by simultaneously expanding a plurality of other predetermined positions of the beam member 2, the bracket member 3 can be fixed to a plurality of axial positions of the beam member 2 very easily and in a short time.

なお、この第２の構造体の製造方法において、異なる外径のコイル２１を有するコイルユニット２０Ａでビーム部材２の複数箇所を同時に拡管させてブラケット部材３を固着させも良い。例えば、ビーム部材２の第一拡径部２Ａにコイルユニット２０Ａの第一のコイル２１を配置するとともにビーム部材２の第二拡径部２Ｂにコイルユニット２０Ａの第二のコイル２１を配置して電磁成形することで、ビーム部材２の第一拡径部２Ａ及び第二拡径部２Ｂをそれぞれバランス良く拡管させることができる。   In the second structure manufacturing method, the bracket member 3 may be fixed by expanding a plurality of locations of the beam member 2 simultaneously with a coil unit 20A having coils 21 having different outer diameters. For example, the first coil 21 of the coil unit 20A is arranged on the first enlarged portion 2A of the beam member 2 and the second coil 21 of the coil unit 20A is arranged on the second enlarged portion 2B of the beam member 2. By performing electromagnetic forming, the first and second enlarged portions 2A and 2B of the beam member 2 can be expanded in a well-balanced manner.

また、上記第１及び第２の構造体の製造方法において、挿入工程、コイル配置工程、コイル固定工程及び固着工程を、ビーム部材２の両端側から行っても良い。   In the first and second structure manufacturing methods, the insertion step, the coil placement step, the coil fixing step, and the fixing step may be performed from both ends of the beam member 2.

このように、ビーム部材２の両端側から挿入工程、コイル配置工程、コイル固定工程及び固着工程を行うことで、ビーム部材２の軸方向の複数箇所にブラケット部材３を極めて容易にかつさらに短時間で固着することができる。   Thus, by performing the insertion process, the coil arrangement process, the coil fixing process, and the fixing process from both ends of the beam member 2, the bracket members 3 can be very easily and in a shorter time at a plurality of positions in the axial direction of the beam member 2. It can be fixed with.

なお、上記第１及び第２の構造体の製造方法で用いるコイルユニット２０，２０Ａの支持棒２２として、樹脂製のパイプを用いれば、この支持棒２２の内部を通してコイル２１へ冷却用の空気を供給したり、支持棒２２内にコイル２１へ通電するための電線を通すことができる。   If a resin pipe is used as the support bar 22 of the coil units 20 and 20A used in the first and second structure manufacturing methods, cooling air is supplied to the coil 21 through the support bar 22. An electric wire for supplying power to the coil 21 can be passed through the support rod 22.

また、この支持棒２２に、膨出機構を設けても良い。この膨出機構を支持棒２２に設ければ、この膨出機構を膨出させてビーム部材２の内周面に密着させることで、支持棒２２をビーム部材２の内部で確実に保持させることができ、また、電磁成形時におけるコイル２１の軸方向への移動をより確実に規制することができる。   Further, the support rod 22 may be provided with a bulging mechanism. If the bulging mechanism is provided on the support rod 22, the bulging mechanism is bulged and brought into close contact with the inner peripheral surface of the beam member 2, so that the support rod 22 is securely held inside the beam member 2. In addition, the movement of the coil 21 in the axial direction during electromagnetic forming can be more reliably regulated.

このように、本発明は上記の実施形態に限定されるものではなく、実施形態の各構成を相互に組み合わせることや、明細書の記載、並びに周知の技術に基づいて、当業者が変更、応用することも本発明の予定するところであり、保護を求める範囲に含まれる。   As described above, the present invention is not limited to the above-described embodiments, and those skilled in the art can make changes and applications based on combinations of the configurations of the embodiments, descriptions in the specification, and well-known techniques. This is also the scope of the present invention, and is included in the scope for which protection is sought.

以上の通り、本明細書には次の事項が開示されている。
（１） 金属管からなる管状部材の軸方向の複数の所定位置に他の部材がそれぞれ取り付けられた構造体の製造方法であって、
前記他の部材に形成された取付孔に前記管状部材を挿通させて前記管状部材の前記所定位置に前記他の部材を配置する部材配置工程と、
支持棒にコイルが連結されたコイルユニットの前記コイルを前記管状部材の端部から内部に挿し込む挿入工程と、
前記コイルユニットを軸方向へ移動させて前記コイルを前記所定位置に対応する位置に配置させるコイル配置工程と、
前記管状部材の外部に延在する前記支持棒を固定することで前記コイルの軸方向の移動を規制するコイル固定工程と、
前記コイルに通電することで発生する電磁力により前記管状部材を拡管させ、前記管状部材に前記他の部材を固着させる固着工程と、
を含み、
前記コイル配置工程、前記コイル固定工程及び前記固着工程を、それぞれの前記所定位置において順に行う
ことを特徴とする構造体の製造方法。
この構造体の製造方法によれば、管状部材に挿入したコイルユニットのコイルを軸方向に移動させて各所定位置で電磁成形によって管状部材を拡管させることで、管状部材の軸方向の複数箇所に他の部材を固着することができる。これにより、例えば、車両用のレインフォースなどのような長尺の管状部材に対して、その軸方向の中間部分における複数箇所に他の部材を容易に固着させることができる。
また、コイルに通電して電磁成形する前に支持棒を管状部材の外部で固定してコイルの軸方向への移動を規制させるので、位置ずれなく円滑に管状部材を拡管させて他の部材をかしめて固着させることができる。
（２） 金属管からなる管状部材の軸方向の複数の所定位置に他の部材がそれぞれ取り付けられた構造体の製造方法であって、
前記他の部材に形成された取付孔に前記管状部材を挿通させて前記管状部材の前記所定位置に前記他の部材を配置する部材配置工程と、
複数のコイルが支持棒で軸方向に連結されたコイルユニットを前記管状部材の端部から内部に挿し込む挿入工程と、
前記コイルユニットを移動させ、それぞれの前記コイルを前記所定位置に対応する位置に配置させるコイル配置工程と、
前記管状部材の外部に延在する前記支持棒を固定することでそれぞれの前記コイルの軸方向の移動を規制するコイル固定工程と、
それぞれの前記コイルに通電することで発生する電磁力により前記管状部材のそれぞれの所定位置を同時に拡管させ、前記管状部材に複数の前記他の部材を固着させる固着工程と、
を含む
ことを特徴とする構造体の製造方法。
この構造体の製造方法によれば、管状部材に挿入したコイルユニットの複数のコイルをそれぞれ所定位置に配置させて電磁成形によって管状部材を同時に拡管させることで、管状部材の軸方向の複数箇所に他の部材を同時に固着することができる。これにより、例えば、車両用のレインフォースなどのような長尺の管状部材に対して、その軸方向の中間部分における複数箇所に他の部材を容易に固着させることができる。
また、コイルに通電して電磁成形する前に支持棒を管状部材の外部で固定してコイルの軸方向への移動を規制させるので、位置ずれなく円滑に管状部材を拡管させて位置ずれなく他の部材をかしめて固着させることができる。
（３） 前記コイル配置工程、前記コイル固定工程及び前記固着工程を繰り返す
ことを特徴とする（２）に記載の構造体の製造方法。
この構造体の製造方法によれば、管状部材に挿入したコイルユニットの複数のコイルで管状部材の複数の所定位置を同時に拡管させ、さらに、コイルユニットを軸方向に移動させて複数のコイルで管状部材の他の複数の所定位置を同時に拡管させることで、管状部材の軸方向の複数箇所に他の部材を極めて容易にかつ短時間で固着することができる。
（４） 前記挿入工程、前記コイル配置工程、前記コイル固定工程及び前記固着工程を、前記管状部材の両端側から行う
ことを特徴とする（１）から（３）のいずれか一項に記載の構造体の製造方法。
この構造体の製造方法によれば、管状部材の両端側から挿入工程、コイル配置工程、コイル固定工程及び固着工程を行うことで、管状部材の軸方向の複数箇所に他の部材を極めて容易にかつさらに短時間で固着することができる。 As described above, the following items are disclosed in this specification.
(1) A method of manufacturing a structure in which other members are respectively attached to a plurality of predetermined positions in the axial direction of a tubular member made of a metal tube,
A member disposing step of inserting the tubular member into an attachment hole formed in the other member and disposing the other member at the predetermined position of the tubular member;
An insertion step of inserting the coil of the coil unit in which the coil is connected to the support rod from the end of the tubular member;
A coil placement step of moving the coil unit in the axial direction to place the coil at a position corresponding to the predetermined position;
A coil fixing step of restricting movement of the coil in the axial direction by fixing the support rod extending to the outside of the tubular member;
A fixing step of expanding the tubular member by electromagnetic force generated by energizing the coil, and fixing the other member to the tubular member;
Including
The manufacturing method of a structure, wherein the coil arranging step, the coil fixing step, and the fixing step are sequentially performed at each of the predetermined positions.
According to this structure manufacturing method, the coil of the coil unit inserted in the tubular member is moved in the axial direction, and the tubular member is expanded by electromagnetic forming at each predetermined position. Other members can be fixed. Thereby, for example, with respect to a long tubular member such as a reinforce for a vehicle, other members can be easily fixed to a plurality of locations in the intermediate portion in the axial direction.
Also, before the coil is energized and electromagnetically molded, the support rod is fixed outside the tubular member to restrict the movement of the coil in the axial direction. It can be caulked and fixed.
(2) A method of manufacturing a structure in which other members are respectively attached to a plurality of predetermined positions in the axial direction of a tubular member made of a metal tube,
A member disposing step of inserting the tubular member into an attachment hole formed in the other member and disposing the other member at the predetermined position of the tubular member;
An insertion step of inserting a coil unit in which a plurality of coils are connected in the axial direction with a support rod from the end of the tubular member;
A coil placement step of moving the coil unit and placing each of the coils at a position corresponding to the predetermined position;
A coil fixing step for restricting movement of each coil in the axial direction by fixing the support rod extending to the outside of the tubular member;
A fixing step of simultaneously expanding each predetermined position of the tubular member by electromagnetic force generated by energizing each of the coils, and fixing the plurality of other members to the tubular member;
A method for producing a structure, comprising:
According to this structure manufacturing method, a plurality of coils of the coil unit inserted into the tubular member are respectively arranged at predetermined positions, and the tubular member is simultaneously expanded by electromagnetic forming, so that a plurality of axial directions of the tubular member are provided. Other members can be fixed simultaneously. Thereby, for example, with respect to a long tubular member such as a reinforce for a vehicle, other members can be easily fixed to a plurality of locations in the intermediate portion in the axial direction.
In addition, since the support rod is fixed outside the tubular member before the coil is energized and electromagnetically formed, the movement of the coil in the axial direction is restricted, so that the tubular member can be smoothly expanded without being misaligned. These members can be fixed by caulking.
(3) The method for manufacturing a structure according to (2), wherein the coil arranging step, the coil fixing step, and the fixing step are repeated.
According to this structure manufacturing method, a plurality of predetermined positions of the tubular member are simultaneously expanded with a plurality of coils of the coil unit inserted into the tubular member, and the coil unit is moved in the axial direction to be tubular with the plurality of coils. By simultaneously expanding a plurality of other predetermined positions of the member, it is possible to fix the other member to a plurality of axial positions of the tubular member very easily and in a short time.
(4) The insertion step, the coil placement step, the coil fixing step, and the fixing step are performed from both ends of the tubular member. (1) to (3) Manufacturing method of structure.
According to this structure manufacturing method, the insertion member, the coil placement step, the coil fixing step, and the fixing step are performed from both ends of the tubular member, so that other members can be extremely easily placed at a plurality of locations in the axial direction of the tubular member. And it can fix in a further short time.

１ レインフォース（構造体）
２ ビーム部材（管状部材）
３ ブラケット部材（他の部材）
３ａ 取付孔
２０，２０Ａ コイルユニット
２１ コイル
２２ 支持棒 1 Reinforce (Structure)
2 Beam members (tubular members)
3 Bracket members (other members)
3a Mounting hole 20, 20A Coil unit 21 Coil 22 Support rod

Claims (3)

金属管からなる管状部材の軸方向の複数の所定位置に他の部材がそれぞれ取り付けられた構造体の製造方法であって、
前記他の部材に形成された取付孔に前記管状部材を挿通させて前記管状部材の複数の前記所定位置に前記他の部材をそれぞれ配置する部材配置工程と、
支持棒にコイルが連結されたコイルユニットの前記コイルを前記管状部材の端部から内部に挿し込む挿入工程と、
前記コイルユニットを軸方向へ移動させて前記コイルを前記所定位置に対応する位置に配置させるコイル配置工程と、
前記管状部材の外部に延在する前記支持棒を固定することで前記コイルの軸方向の移動を規制するコイル固定工程と、
前記コイルに通電することで発生する電磁力により前記管状部材を拡管させ、前記管状部材に前記他の部材をかしめて固着させる固着工程と、
前記支持棒の固定を解除する固定解除工程と、
を含み、
前記コイル配置工程、前記コイル固定工程、前記固着工程、及び前記固定解除工程を、複数の前記所定位置において順に繰返し行い、複数の前記所定位置で前記管状部材を個別に拡管させ、前記管状部材に前記他の部材をそれぞれ固着させる
ことを特徴とする構造体の製造方法。 A method of manufacturing a structure in which other members are respectively attached to a plurality of predetermined positions in the axial direction of a tubular member made of a metal tube,
A member placing step of placing each multiple of the other member to the predetermined position of the tubular member by inserting the tubular member into a mounting hole formed in the other member,
An insertion step of inserting the coil of the coil unit in which the coil is connected to the support rod from the end of the tubular member;
A coil placement step of moving the coil unit in the axial direction to place the coil at a position corresponding to the predetermined position;
A coil fixing step of restricting movement of the coil in the axial direction by fixing the support rod extending to the outside of the tubular member;
A fixing step of expanding the tubular member by electromagnetic force generated by energizing the coil, and caulking and fixing the other member to the tubular member;
A fixing release step for releasing the fixing of the support rod;
Including
The coil placement step, the coil fixing step, the fixing step, and the unlocking step, have rows repeatedly in this order in a plurality of predetermined positions, by tube expansion individually said tubular member at a plurality of predetermined positions, the tubular member A method of manufacturing a structure , wherein the other members are fixed to each other . 前記コイル固定工程では、In the coil fixing step,
前記支持棒を前記管状部材の外部で固定具によって締結して、前記コイルの移動を規制するThe support rod is fastened by a fixture outside the tubular member to restrict the movement of the coil.
ことを特徴とする請求項１に記載の構造体の製造方法。The method for manufacturing a structure according to claim 1. 前記挿入工程、前記コイル配置工程、前記コイル固定工程及び前記固着工程を、前記管状部材の両端側から行う
ことを特徴とする請求項１又は２に記載の構造体の製造方法。 Said inserting step, the coil placement step, the coil fixing step and the fixing step, the manufacturing method of the structure according to claim 1 or 2, characterized in that the both ends of the tubular member.
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