JP6711253B2 - Dissimilar material joining method - Google Patents
Dissimilar material joining method Download PDFInfo
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- JP6711253B2 JP6711253B2 JP2016235189A JP2016235189A JP6711253B2 JP 6711253 B2 JP6711253 B2 JP 6711253B2 JP 2016235189 A JP2016235189 A JP 2016235189A JP 2016235189 A JP2016235189 A JP 2016235189A JP 6711253 B2 JP6711253 B2 JP 6711253B2
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- 238000005304 joining Methods 0.000 title claims description 44
- 238000000034 method Methods 0.000 title claims description 40
- 239000000463 material Substances 0.000 title claims description 16
- 238000003466 welding Methods 0.000 claims description 71
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- 229910052742 iron Inorganic materials 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 3
- 239000011324 bead Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 7
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 2
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
本発明は、異種部材接合方法に関する。 The present invention relates to a method for joining dissimilar members.
下記特許文献１には、鉄系金属材料で形成されたリベットを貫通させたアルミニウム合金のルーフパネルを、鋼板から加工した車体フレームパネルに当接させた状態で、ルーフパネル側から露出するリベットの頭部方向から、又は、車体フレームパネル側からリベット軸部の軸線に沿って溶融させて、車体フレームパネルとルーフパネルとを接合した異種部材接合方法が開示されている。この方法によれば、リベットの軸線に沿って車体フレームパネルとリベットが溶接されるため、スポット溶接で接合した場合と比較して溶接ナゲットのずれ及びルーフパネルの材質であるアルミニウム合金の軟化が生じにくいことから、ルーフパネルの変形を抑制して安定した接合強度を確保することができる。 Patent Document 1 below discloses a rivet exposed from the roof panel side in a state where an aluminum alloy roof panel having rivets formed of an iron-based metal material penetrated therein is brought into contact with a vehicle body frame panel processed from a steel plate. Disclosed is a method for joining dissimilar members in which a vehicle body frame panel and a roof panel are joined together by melting from the head direction or from the vehicle body frame panel side along the axis of the rivet shaft. According to this method, the body frame panel and the rivet are welded along the axis of the rivet, so that the displacement of the welding nugget and the softening of the aluminum alloy that is the material of the roof panel occur compared with the case of joining by spot welding. Since it is difficult, it is possible to suppress the deformation of the roof panel and ensure stable joint strength.
しかしながら、特許文献１に開示されている異種部材接合方法による場合、リベットを溶融させるためにレーザー溶接手段を使用する必要がある。修理時に損傷を受けたアウタパネルを交換する場合、車体フレームパネルとアウタパネルの接合を外して新品のアウタパネルを再接合することとなるが、一般的な自動車修理工場では高額なレーザー溶接機を所有していないため、このような異種部材の接合は困難である。 However, in the case of the dissimilar member bonding method disclosed in Patent Document 1, it is necessary to use laser welding means to melt the rivet. When replacing an outer panel that has been damaged during repair, the body frame panel and outer panel will be unjoined and a new outer panel will be rejoined.However, a typical automobile repair shop owns an expensive laser welding machine. Therefore, it is difficult to join such dissimilar members.
本発明は、上記事実を考慮し、簡易な接合方法により、異種部材同士の安定した接合強度の確保とリぺアビリティの向上を図ることができる異種部材接合方法の提供を目的とする。 SUMMARY OF THE INVENTION In consideration of the above facts, an object of the present invention is to provide a dissimilar member bonding method capable of securing stable bonding strength between dissimilar members and improving repeatability by a simple bonding method.
請求項１に記載の本発明に係る異種部材接合方法は、鉄系金属で形成された第１部材と前記第１部材と異なる材料で形成された第２部材とを接合する異種部材接合方法であって、前記第２部材に貫通孔を設け、筒状に形成された軸部と、前記軸部の外側面に形成された突起部と、を備えると共に前記第１部材と同種の材料で形成された固定部材を前記貫通孔の内壁に前記突起部を係合させて前記貫通孔に圧入させる第１工程と、前記貫通孔に圧入した前記固定部材の圧入方向の先端部が前記第１部材に当接するように前記第２部材を前記第１部材に当接させる第２工程と、前記固定部材をプラグ溶接又はスタッド溶接により前記第１部材に接合させる第３工程と、を有する。 The dissimilar member joining method according to the present invention according to claim 1 is a dissimilar member joining method for joining a first member formed of an iron-based metal and a second member formed of a material different from the first member. And a through-hole provided in the second member, a shaft portion formed in a tubular shape, and a protrusion formed on an outer surface of the shaft portion, and formed of the same material as that of the first member. A first step of engaging the protruding member with the inner wall of the through hole by press-fitting the fixed member into the through hole; A second step of bringing the second member into contact with the first member so as to come into contact with the first member, and a third step of joining the fixing member to the first member by plug welding or stud welding.
本発明に係る異種部材接合方法では、初めに第２部材に形成された貫通孔に固定部材が抜け落ちないように圧入される。次に、第１部材と第２部材の位置合わせをしたうえで、貫通孔に圧入した固定部材の圧入方向の先端部が第１部材に当接するように第２部材が第１部材に当接される。最後に、第１部材に当接されている固定部材は、プラグ溶接又はスタッド溶接により固定部材と第１部材の間に溶接ビードを形成して第１部材に接合される。これにより、第１部材と第１部材と異なる材料で形成された第２部材が接合される。 In the method for joining dissimilar members according to the present invention, the fixing member is first press-fitted into the through hole formed in the second member so as not to fall out. Next, after aligning the first member and the second member, the second member abuts on the first member so that the tip end portion of the fixing member press-fitted into the through hole in the press-fitting direction abuts on the first member. To be done. Finally, the fixing member abutting on the first member is joined to the first member by forming a weld bead between the fixing member and the first member by plug welding or stud welding. As a result, the first member and the second member made of a material different from that of the first member are joined.
ここで、本発明によれば、固定部材は第２部材に圧入されるため、固定部材と第２部材は安定して接合される。また、貫通孔に圧入した固定部材の圧入方向の先端部が第１部材に当接した状態で溶接されるため、同種の材料で形成された固定部材と第１部材は安定して接合される。 Here, according to the present invention, since the fixing member is press-fitted into the second member, the fixing member and the second member are stably joined. Further, since the fixing member press-fitted into the through hole is welded in a state in which the tip end portion in the press-fitting direction is in contact with the first member, the fixing member and the first member formed of the same kind of material are stably joined. ..
このとき、溶接ビードは、固定部材と第１部材の間で形成されて、第２部材に接しない。また、プラグ溶接及びスタッド溶接は、どちらも短時間で部材を接合させることのできる溶接である。これらのことから、溶接による第２部材の軟化が生じにくく、熱変形を抑制することができるため、第１部材と第２部材の安定した接合強度を確保することができる。 At this time, the weld bead is formed between the fixed member and the first member and does not contact the second member. In addition, both plug welding and stud welding are welding methods that can join members in a short time. For these reasons, softening of the second member due to welding is unlikely to occur and thermal deformation can be suppressed, so that stable bonding strength between the first member and the second member can be secured.
また、本発明で採用するプラグ溶接及びスタッド溶接は、一般的な自動車修理工場で所有することが可能な半自動溶接機及びスタッド溶接機を使用して行うことができる一般的な溶接である。このように、一般的な自動車修理工場でも実施できる簡易な接合方法により異種部材の接合をすることができる。 Further, the plug welding and stud welding used in the present invention are general welding that can be performed using a semi-automatic welding machine and a stud welding machine that can be owned by a general automobile repair shop. In this way, different kinds of members can be joined by a simple joining method that can be implemented even in a general automobile repair shop.
以上説明したように、本発明に係る異種部材接合方法は、プラグ溶接又はスタッド溶接のような一般的な自動車修理工場でも実施できる簡易な接合方法により、異種部材同士の接合強度の確保とリペアビリティの向上を図ることができるという優れた効果を有する。 As described above, the dissimilar member joining method according to the present invention is a simple joining method such as plug welding or stud welding that can be carried out even in a general automobile repair shop, so that the joining strength between different members is secured and the repairability is improved. It has an excellent effect that the above can be improved.
（第１実施形態）
以下、図１及び図２を用いて、本発明に係る異種部材接合方法の第１実施形態について説明する。
(First embodiment)
Hereinafter, a first embodiment of a method for joining dissimilar members according to the present invention will be described with reference to FIGS. 1 and 2.
図２（Ａ）及び図２（Ｂ）に示すように本実施形態に係る異種部材接合方法による接合構造１０は、鉄系金属で形成された第１部材１２と、第１部材１２と異なる材料で形成された第２部材１４と、第１部材１２と同種の鉄系金属で形成された固定部材であるリベット１６と、を含んで構成されている。 As shown in FIGS. 2A and 2B, the joining structure 10 according to the method for joining different members according to the present embodiment has a first member 12 formed of an iron-based metal and a material different from the first member 12. And a rivet 16 which is a fixing member made of the same iron-based metal as the first member 12.
第１部材１２は、鉄系金属で形成されている。例えば、骨格部材のように、衝突に対する曲げ強度並びに圧縮強度及び走行により発生する振動に対する疲労強度を確保する必要があるため鋼材等で形成されている。 The first member 12 is made of iron-based metal. For example, like a skeleton member, it is made of steel or the like because it is necessary to secure bending strength and compression strength against collision and fatigue strength against vibration generated by running.
第２部材１４は、鉄系金属以外の材料、例えば、炭素繊維強化プラスチック（ＣＦＲＰ）、アルミニウム合金、マグネシウム合金等の軽量材料で形成されている。 The second member 14 is formed of a material other than iron-based metal, for example, a lightweight material such as carbon fiber reinforced plastic (CFRP), aluminum alloy, magnesium alloy, or the like.
リベット１６は、第１部材１２と同様に鉄系金属で形成されている。リベット１６の材料は、第１部材１２と溶接が可能な鉄系金属であれば、第１部材１２と異なる材料であってもよい。例えば、リベット１６と第１部材１２の組み合わせとしては、ステンレススチールと鉄などの組み合わせであってもよい。 The rivet 16 is made of an iron-based metal like the first member 12. The material of the rivet 16 may be a material different from that of the first member 12 as long as it is an iron-based metal that can be welded to the first member 12. For example, the combination of the rivet 16 and the first member 12 may be a combination of stainless steel and iron.
本実施形態で用いるリベット１６は、円筒状に形成された軸部１８と、軸部１８の基端側の外周部に形成された略円形状のフランジ部２０と、を含んで構成されている。軸部１８の軸芯部には、貫通孔が形成されており、その貫通孔がプラグ孔２２とされている。 The rivet 16 used in the present embodiment is configured to include a cylindrical shaft portion 18 and a substantially circular flange portion 20 formed on the outer peripheral portion of the shaft portion 18 on the proximal end side. .. A through hole is formed in the shaft core of the shaft portion 18, and the through hole serves as a plug hole 22.
軸部１８の第２部材１４への圧入方向の先端部には、軸部１８の外径が圧入方向先端に向かうにつれて小さくなるように形成された第１テーパ部２４が設けられている。また、軸部１８の基端部には、軸部１８の内径が圧入方向先端に向かって小さくなるように形成された第２テーパ部２６が設けられている。さらに、軸部１８の外側面には、複数の突起部２８が設けられている。 A first taper portion 24 is provided at a tip end portion of the shaft portion 18 in the press-fitting direction to the second member 14, and the outer diameter of the shaft portion 18 is formed so as to become smaller toward the tip end in the press-fitting direction. A second taper portion 26 is formed at the base end of the shaft portion 18 so that the inner diameter of the shaft portion 18 decreases toward the tip in the press-fitting direction. Further, a plurality of protrusions 28 are provided on the outer surface of the shaft portion 18.
リベット１６の圧入された第２部材１４が第１部材１２に当接した状態で、プラグ溶接されることによりプラグ孔２２に溶接ビード３２が形成され、リベット１６と第１部材１２が接合されている。これにより、第２部材１４が第１部材１２に接合されている。 The weld bead 32 is formed in the plug hole 22 by plug welding with the second member 14 into which the rivet 16 is press-fitted and in contact with the first member 12, and the rivet 16 and the first member 12 are joined. There is. As a result, the second member 14 is joined to the first member 12.
次に、本実施形態に係る接合構造１０の異種部材接合方法について説明する。 Next, a method for joining dissimilar members of the joining structure 10 according to the present embodiment will be described.
接合に際しては、はじめに、第２部材１４に貫通孔３４が形成され、プレス装置などを用いてリベット１６が貫通孔３４に圧入される。次に、貫通孔３４に圧入したリベット１６の圧入方向の先端部１６Ａが第１部材１２に当接するように第２部材１４が第１部材１２に当接される。最後に、第１部材１２と第２部材１４が当接した状態で、リベット１６が、プラグ溶接により第１部材１２に接合される。 At the time of joining, first, the through hole 34 is formed in the second member 14, and the rivet 16 is pressed into the through hole 34 by using a pressing device or the like. Next, the second member 14 is brought into contact with the first member 12 so that the tip portion 16A in the press-fitting direction of the rivet 16 press-fitted into the through hole 34 comes into contact with the first member 12. Finally, the rivet 16 is joined to the first member 12 by plug welding while the first member 12 and the second member 14 are in contact with each other.
リベット１６は、第２部材１４に設けられた貫通孔３４に圧入されて取り付けられる。軸部１８の外側面に設けられた突起部２８は、貫通孔３４の内壁に突き刺さるように係合される。これにより、リベット１６と第２部材１４は接合される。 The rivet 16 is press fitted into the through hole 34 provided in the second member 14 and attached. The protruding portion 28 provided on the outer side surface of the shaft portion 18 is engaged so as to pierce the inner wall of the through hole 34. Thereby, the rivet 16 and the second member 14 are joined.
リベット１６が圧入された第２部材１４は、第１部材１２に当接した状態で、リベット１６が、プラグ溶接により第１部材１２に接合される。プラグ溶接は、アーク溶接トーチ３８を貫通孔３４から開放されている第１部材１２の中心部３６に臨ませて固定される。この状態で、第１部材１２の板厚とアーク溶接トーチ３８の径により設定される溶接電流及びアーク電圧により、リベット１６と第１部材１２がアーク溶接されて、プラグ孔２２に溶接ビード３２が形成される。 The rivet 16 is joined to the first member 12 by plug welding while the second member 14 into which the rivet 16 is press-fitted is in contact with the first member 12. In the plug welding, the arc welding torch 38 is fixed so as to face the central portion 36 of the first member 12 opened from the through hole 34. In this state, the rivet 16 and the first member 12 are arc-welded by the welding current and arc voltage set by the plate thickness of the first member 12 and the diameter of the arc welding torch 38, and the welding bead 32 is formed in the plug hole 22. It is formed.
この時点での溶接ビード３２は、第１部材１２の板厚とアーク溶接トーチ３８の径により設定される溶接電流及びアーク電圧によるアーク溶接で形成されるため、リベット１６のプラグ孔２２の圧入方向と反対方向側では、部分的に又は全周に亘って溶け落ちが発生する場合がある。 Since the welding bead 32 at this time is formed by arc welding by the welding current and arc voltage set by the plate thickness of the first member 12 and the diameter of the arc welding torch 38, the press-fitting direction of the plug hole 22 of the rivet 16 is determined. On the opposite side, the burn-through may occur partially or over the entire circumference.
このため、リベット１６の厚み、すなわち、リベット１６の軸部の圧入方向の長さとアーク溶接トーチ３８の径で設定される溶接電流及びアーク電圧により、第２テーパ部２６の周方向に沿ってさらにアーク溶接がされる。これにより、リベット１６及び既に形成された溶接ビード３２に溶け込み、溶け落ち部分を埋めるように溶接ビード３２が形成される。第２部材１４は、アーク溶接トーチ３８及び第１部材１２とリベット１６の間に形成される溶接ビード３２に直接接触することがないため、プラグ溶接後の第２部材１４の軟化は生じない。 Therefore, due to the thickness of the rivet 16, that is, the welding current and the arc voltage set by the length of the rivet 16 in the press-fitting direction of the shaft and the diameter of the arc welding torch 38, the second taper portion 26 is further extended in the circumferential direction. Arc welding is done. As a result, the weld bead 32 is formed so as to be melted into the rivet 16 and the weld bead 32 already formed and to fill the melt-through portion. Since the second member 14 does not directly contact the arc welding torch 38 and the welding bead 32 formed between the first member 12 and the rivet 16, the second member 14 does not soften after plug welding.
また、第２テーパ部２６の周方向に沿ってアーク溶接をする際には、リベット１６の圧入方向（軸方向）に対して一定のトーチ角を付けたアーク溶接トーチ３８を第２テーパ部２６に固定することで溶接される。このため、プラグ孔２２がアーク溶接トーチ３８に干渉しないように、トーチ角に対応した角度で第２テーパ部２６の傾斜が設けられる。 Further, when performing arc welding along the circumferential direction of the second taper portion 26, the arc welding torch 38 having a constant torch angle with respect to the press-fitting direction (axial direction) of the rivet 16 is attached to the second taper portion 26. It is welded by fixing to. Therefore, the second taper portion 26 is inclined at an angle corresponding to the torch angle so that the plug hole 22 does not interfere with the arc welding torch 38.
（第１実施形態の作用・効果）
次に、本実施形態の作用並びに効果について説明する。
(Operation/effect of the first embodiment)
Next, the operation and effect of this embodiment will be described.
本実施形態に係る異種部材接合方法では、リベット１６は第２部材１４に圧入されるため、リベット１６を第２部材１４に安定して接合される。さらに、突起部２８によって、第２部材に対する抜け落ちや周り止めが防止される。 In the dissimilar member joining method according to the present embodiment, the rivet 16 is press-fitted into the second member 14, so that the rivet 16 is stably joined to the second member 14. Further, the protrusion 28 prevents the second member from slipping off or preventing rotation.
また、貫通孔３４に圧入したリベット１６の圧入方向の先端部１６Ａが第１部材１２に当接した状態で溶接されるため、同種の材料で形成されたリベット１６と第１部材１２は安定して接合される。このとき、溶接ビード３２は、リベット１６と第１部材との間で形成されて、第２部材１４に接しないため第２部材１４の軟化は生じない。さらに、本実施形態で採用されているプラグ溶接に用いる溶接法であるアーク溶接は、短時間で部材を接合させることのできる溶接である。これらのことから、第２部材１４の熱変形を抑制することができるため、第１部材１２と第２部材１４の安定した接合強度を確保することができる。 Further, since the tip portion 16A in the press-fitting direction of the rivet 16 press-fitted into the through hole 34 is welded in contact with the first member 12, the rivet 16 and the first member 12 formed of the same kind of material are stable. Are joined together. At this time, since the weld bead 32 is formed between the rivet 16 and the first member and does not contact the second member 14, the second member 14 is not softened. Further, arc welding, which is a welding method used in the plug welding adopted in the present embodiment, is a welding method capable of joining members in a short time. From these facts, the thermal deformation of the second member 14 can be suppressed, so that stable bonding strength between the first member 12 and the second member 14 can be secured.
さらに、本実施形態で採用されているプラグ溶接は、一般的な自動車修理工場で所有することが可能な半自動溶接機を使用して行うことができる一般的な溶接である。このように、一般的な自動車修理工場でも実施できる簡易な方法により異種部材の接合をすることができる。 Further, the plug welding employed in this embodiment is a general welding that can be performed using a semi-automatic welding machine that can be owned by a general automobile repair shop. In this way, dissimilar members can be joined by a simple method that can be implemented even in a general automobile repair shop.
これらのことから、本実施形態に係る異種部材接合方法は、プラグ溶接のように一般的な自動車修理工場でも実施できる簡易な溶接方法を用いて、鉄系金属で形成された第１部材１２と鉄系金属と異なる材料で形成された第２部材１４の接合強度を確保し、しかもリペアビリティの向上を図ることができる。 From these facts, the dissimilar member joining method according to the present embodiment uses the simple welding method that can be carried out in a general automobile repair shop such as plug welding, and the first member 12 formed of the iron-based metal. It is possible to secure the bonding strength of the second member 14 formed of a material different from the iron-based metal and to improve the repairability.
次に、本実施形態の別の効果について、本実施形態を、以下に説明する既存の接合方法と比較して説明する。 Next, another effect of the present embodiment will be described by comparing the present embodiment with an existing joining method described below.
本実施形態のような異種部材の接合方法は、アッパバックパネル及びドア開口部のオープニングフランジのように、接合に用いたリベット１６が第２部材１４の貫通孔３４から多少飛び出しても問題のない箇所へ適用するのが好適である。例えば、ドア開口部のオープニングフランジにはウェザーストリップが取り付けられるため、リベットの頭部が多少第２部材１４からはみ出しても、ウェザーストリップの組み付けやシール性に影響を与えないので適用可能である。 In the method of joining dissimilar members as in the present embodiment, there is no problem even if the rivet 16 used for joining jumps out of the through hole 34 of the second member 14 to some extent, like the upper back panel and the opening flange of the door opening. It is suitable to be applied to a place. For example, since the weather strip is attached to the opening flange of the door opening, even if the head portion of the rivet slightly protrudes from the second member 14, it does not affect the assembling of the weather strip and the sealing property, and therefore it is applicable.
一方、既存の接合方法により損傷したアウタパネルを交換して修理する場合には、車体フレームパネルとアウタパネルの接合を外して新品のアウタパネルを再接合するために、第２部材だけでなく第１部材にも貫通孔が設けられ、これにブラインドリベットが通されて締結される。 On the other hand, when the outer panel damaged by the existing joining method is replaced and repaired, in order to remove the joint between the body frame panel and the outer panel and rejoin the new outer panel, not only the second member but also the first member is used. Is also provided with a through hole, through which a blind rivet is passed and fastened.
鉄系金属である第１部材が、ホットスタンプや超高張力鋼である場合には、孔をあけるためにそれなりの時間と工数を費やす。具体的には、超高張力鋼に孔を４つ設けるだけで、ドリルの刃を一つ消耗するといった不利な点が生じる。一方、本実施形態では、鉄系金属である第１部材１２には貫通孔を設ける必要がないため、組み付け性がよい。 When the first member, which is an iron-based metal, is a hot stamp or ultra-high-strength steel, it takes a certain amount of time and manpower to open a hole. Specifically, providing only four holes in the ultra-high-strength steel has the disadvantage of consuming one blade of the drill. On the other hand, in the present embodiment, since it is not necessary to provide the through hole in the first member 12 which is an iron-based metal, the assembling property is good.
また、頭部がパネル表面から大きく突出して取り付けられるブラインドリベットは、接合部を覆うようにウェザーストリップが取り付けられるドア開口部のフランジ等の修理には適さない。 Further, the blind rivet to which the head portion is attached so as to largely project from the panel surface is not suitable for repairing the flange of the door opening portion where the weather strip is attached so as to cover the joint portion.
さらに、ブラインドリベットによる取り付けでは、下孔とリベットの間に隙間が生じるため、がたつきが生じる場合がある。この場合、車両の走行で生じる振動に対する疲労強度が低下するという不利な点が生じる。一方、本実施形態では、リベット１６は第２部材１４に圧入されるうえに、溶接ビード３２がリベット１６と第１部材１２の間で、プラグ孔２２を埋めるように形成されるため、第１部材１２とプラグ孔２２の間に隙間が生じない。また、トーチ角に対応した角度で第２テーパ部２６の傾斜が設けられるため、プラグ孔２２がアーク溶接トーチ３８に干渉しないように、安定した溶接が行われる。これらにより、本実施形態による異種部材接合方法により、車両の走行で生じる振動に対する疲労強度を確保することができる。 Furthermore, in the case of mounting with a blind rivet, a gap may occur between the pilot hole and the rivet, which may cause rattling. In this case, there is a disadvantage that the fatigue strength with respect to the vibration generated when the vehicle travels is reduced. On the other hand, in the present embodiment, the rivet 16 is press-fitted into the second member 14, and the weld bead 32 is formed between the rivet 16 and the first member 12 so as to fill the plug hole 22. No gap is created between the member 12 and the plug hole 22. Further, since the second taper portion 26 is inclined at an angle corresponding to the torch angle, stable welding is performed so that the plug hole 22 does not interfere with the arc welding torch 38. As a result, the fatigue strength against vibration generated when the vehicle travels can be secured by the method for joining dissimilar members according to the present embodiment.
これらのことから、本実施形態に係る異種部材接合方法は、既存の接合方法を修理に適用した場合と比較して、組み付け性を向上させることができ、しかも車両の走行により生じる振動に対する疲労強度も向上させることができる。 From these facts, the dissimilar member joining method according to the present embodiment can improve the assemblability as compared with the case where the existing joining method is applied to the repair, and further, the fatigue strength against the vibration generated by the traveling of the vehicle. Can also be improved.
（第２実施形態）
次に、図３及び図４を用いて、本発明に係る異種部材接合方法の第２実施形態について説明する。なお、前述した第１実施形態と同一構成部分については、同一番号を付してその説明を省略する。
(Second embodiment)
Next, a second embodiment of the method for joining dissimilar members according to the present invention will be described with reference to FIGS. 3 and 4. The same components as those in the first embodiment described above are designated by the same reference numerals and the description thereof will be omitted.
図４（Ａ）及び（Ｂ）に示されるように、この第２実施形態に係る接合構造４０は、第１実施形態で説明した異種部材接合方法と同様に、鉄系金属で形成された第１部材１２と、第１部材１２と異なる材料で形成された第２部材１４と、を含んで構成されている。 As shown in FIGS. 4(A) and 4(B), the joining structure 40 according to the second embodiment is similar to the joining method for different members described in the first embodiment. The first member 12 and the second member 14 made of a material different from that of the first member 12 are included.
第２実施形態では、第１実施形態のリベット１６に替えて、軸芯部に配置され、鉄系金属で形成されたスタッド部４２と、このスタッド部４２の下部外周に配置され、鉄系金属で形成されたリベット部４４と、が一体で形成された固定部材であるスタッドボルト４６が用いられる。スタッドボルト４６は、一例として鍛造成形によって形成されている。 In the second embodiment, in place of the rivet 16 of the first embodiment, the stud portion 42 formed on the shaft core portion and formed of iron-based metal, and the outer periphery of the lower portion of the stud portion 42 are formed. A stud bolt 46, which is a fixing member integrally formed with the rivet portion 44 formed in step 1, is used. The stud bolt 46 is formed by forging as an example.
第２実施形態に係る接合構造４０は、第１実施形態で説明した異種部材接合方法と基本的に同じ工程を経て接合されている。はじめに、第２部材１４に貫通孔３４が形成され、プレス装置などを用いてスタッドボルト４６のリベット部４４が貫通孔３４に圧入される。次に、スタッドボルト４６に形成されたスタッド部４２の圧入方向の先端部４２Ａが第１部材１２に当接される。最後に、第１部材１２と先端部４２Ａが当接した状態で、スタッド部４２が、スタッド溶接により第１部材１２に接合される。 The joining structure 40 according to the second embodiment is joined through basically the same steps as the method for joining dissimilar members described in the first embodiment. First, the through hole 34 is formed in the second member 14, and the rivet portion 44 of the stud bolt 46 is press-fitted into the through hole 34 using a pressing device or the like. Next, the tip end portion 42A of the stud portion 42 formed in the stud bolt 46 in the press-fitting direction is brought into contact with the first member 12. Finally, the stud portion 42 is joined to the first member 12 by stud welding while the first member 12 and the tip portion 42A are in contact with each other.
具体的には、第２部材１４に圧入されたスタッドボルト４６は、スタッド部４２の先端部４２Ａが第１部材１２に当接された状態で、第１部材１２の板厚とスタッド部４２の径により決定される溶接電流及びアーク電圧により、第１部材１２とスタッドボルト４６がスタッド溶接される。アークを発生させてスタッド部４２と第１部材１２を溶融することで溶接ビード３２が形成される。これにより、第１部材１２とスタッドボルト４６のスタッド部４２が接合される。スタッド溶接後、スタッドボルト４６のスタッド部４２の不要な部分が削り取られる。 Specifically, the stud bolt 46 press-fitted into the second member 14 has the plate thickness of the first member 12 and the stud portion 42 of the stud portion 42 in a state where the tip end portion 42A of the stud portion 42 is in contact with the first member 12. The first member 12 and the stud bolt 46 are stud welded by the welding current and the arc voltage determined by the diameter. The welding bead 32 is formed by generating an arc and melting the stud portion 42 and the first member 12. As a result, the first member 12 and the stud portion 42 of the stud bolt 46 are joined. After the stud welding, unnecessary portions of the stud portion 42 of the stud bolt 46 are scraped off.
なお、第２部材１４は、スタッドボルト４６のリベット部４４と第１部材１２との間に形成される溶接ビード３２に直接接触することがないため、スタッド溶接後の第２部材１４の軟化は生じない。 Since the second member 14 does not directly contact the weld bead 32 formed between the rivet portion 44 of the stud bolt 46 and the first member 12, the second member 14 is not softened after the stud welding. Does not happen.
（第２実施形態の作用・効果）
次に、本実施形態の作用並びに効果について説明する。
(Operation/effect of the second embodiment)
Next, the operation and effect of this embodiment will be described.
上記構成によっても、スタッドボルト４６を用いて、溶接ビード３２がスタッド溶接により形成されることを除けば、第１実施形態の接合構造１０と同様に構成されているので、第１実施形態と同様の効果が得られる。 Also with the above structure, the stud bolt 46 is used to form the weld bead 32 by stud welding, and the structure is similar to that of the joining structure 10 of the first embodiment. The effect of is obtained.
すなわち、リベット部４４は第２部材１４の貫通孔３４に圧入されているため、第２部材に安定して接合することができる。さらに、突起部２８によって、第２部材に対する抜け落ちや周り止めが防止される。 That is, since the rivet portion 44 is press-fitted into the through hole 34 of the second member 14, it can be stably joined to the second member. Further, the protrusion 28 prevents the second member from slipping off or preventing rotation.
また、貫通孔３４に圧入されたスタッドボルト４６の圧入方向の先端部４２Ａが第１部材１２に当接した状態で溶接されるため、同種の鉄系金属で形成されたスタッドボルト４６と第１部材１２は安定して接合される。このとき、溶接ビード３２は、スタッドボルト４６と第１部材１２との間で形成されて、第２部材１４に接しないため第２部材１４の軟化が生じない。これに加えて、本実施形態で採用されているスタッド溶接は、第１実施形態で採用したプラグ溶接と比較して、さらに短時間で部材を接合させることのできる溶接である。これらのことから、第２部材１４の熱変形を抑制することができるため、第１部材１２と第２部材１４の安定した接合強度を確保することができる。 Further, since the stud bolt 46 press-fitted into the through hole 34 is welded while the tip end portion 42A in the press-fitting direction is in contact with the first member 12, the stud bolt 46 formed of the same kind of ferrous metal and the first member 42 are welded together. The members 12 are stably joined. At this time, since the weld bead 32 is formed between the stud bolt 46 and the first member 12 and does not contact the second member 14, the second member 14 is not softened. In addition to this, the stud welding employed in the present embodiment is welding capable of joining members in a shorter time than the plug welding employed in the first embodiment. From these facts, the thermal deformation of the second member 14 can be suppressed, so that stable bonding strength between the first member 12 and the second member 14 can be secured.
さらに、本実施形態で採用されているスタッド溶接は、一般的な自動車修理工場で所有することが可能なスタッド溶接機を使用して行うことができる一般的な溶接である。このように、一般的な自動車修理工場でも実施できる簡易な方法により異種部材の接合をすることができる。 Further, the stud welding employed in this embodiment is a general welding that can be performed using a stud welding machine that can be owned by a general automobile repair shop. In this way, dissimilar members can be joined by a simple method that can be implemented even in a general automobile repair shop.
これらのことから、本実施形態に係る異種部材接合方法は、スタッド溶接のように一般的な自動車修理工場でも実施できる簡易な溶接方法を用いて、鉄系金属で形成された第１部材１２と鉄系金属と異なる材料で形成された第２部材１４の接合強度を確保し、しかもリペアビリティの向上を図ることができる。 From these facts, the dissimilar member joining method according to the present embodiment uses a simple welding method such as stud welding that can be carried out even in a general automobile repair shop, and the first member 12 formed of an iron-based metal. It is possible to secure the bonding strength of the second member 14 formed of a material different from the iron-based metal and to improve the repairability.
（その他の実施形態）
なお、上述した本実施形態では、リベット１６及びスタッドボルト４６の軸部１８の外側面に突起部２８が設けられているが、これに限らず、軸部１８の外側面にローレット加工を施し、第２部材１４の貫通孔３４に対向する凸凹の突起を設けてもよいし、リベット１６及びスタッドボルト４６の軸部１８の外側面に、リベット１６及びスタッドボルト４６の軸方向に沿ったセレーションのような突起部を設けるようにしてもよい。
(Other embodiments)
In the above-described present embodiment, the protrusion 28 is provided on the outer surface of the shaft 18 of the rivet 16 and the stud bolt 46, but the invention is not limited to this, and the outer surface of the shaft 18 is knurled. An uneven projection may be provided facing the through hole 34 of the second member 14, and the outer surface of the shaft portion 18 of the rivet 16 and the stud bolt 46 may have serrations along the axial direction of the rivet 16 and the stud bolt 46. You may make it provide such a protrusion part.
また、上述した本実施形態では、リベット１６及びスタッドボルト４６は、軸方向に見て略円形状に形成されているが、これに限らず、多角形状、矩形状、楕円状などの形状を用いてもよい。 Further, in the above-described present embodiment, the rivet 16 and the stud bolt 46 are formed in a substantially circular shape when viewed in the axial direction, but the shape is not limited to this, and a polygonal shape, a rectangular shape, an elliptical shape, or the like may be used. May be.
さらに、本実施形態で示した異種部材接合方法は、アッパバックパネル及びドア開口部のオープニングフランジに適用するものとして説明したが、これに限らず、車両の他の接合部に適用してもよい。 Further, the different member joining method shown in the present embodiment has been described as being applied to the upper back panel and the opening flange of the door opening, but the present invention is not limited to this and may be applied to other joining parts of the vehicle. ..
１２ 第１部材
１４ 第２部材
１６ リベット（固定部材）
１６Ａ 先端部
３４ 貫通孔
４２ スタッド部
４２Ａ 先端部
４４ リベット部
４６ スタッドボルト（固定部材）
12 1st member 14 2nd member 16 Rivet (fixing member)
16A Tip portion 34 Through hole 42 Stud portion 42A Tip portion 44 Rivet portion 46 Stud bolt (fixing member)
Claims (1)
前記第２部材に貫通孔を設け、筒状に形成された軸部と、前記軸部の外側面に形成された突起部と、を備えると共に前記第１部材と同種の材料で形成された固定部材を前記貫通孔の内壁に前記突起部を係合させて前記貫通孔に圧入させる第１工程と、
前記貫通孔に圧入した前記固定部材の圧入方向の先端部が前記第１部材に当接するように前記第２部材を前記第１部材に当接させる第２工程と、
前記固定部材をプラグ溶接又はスタッド溶接により前記第１部材に接合させる第３工程と、
を有する異種部材接合方法。
A heterogeneous member joining method for joining a first member formed of an iron-based metal and a second member formed of a material different from the first member,
A fixing member which is provided with a through hole in the second member, includes a shaft portion formed in a tubular shape, and a protrusion portion formed on an outer surface of the shaft portion, and is formed of the same material as the first member. A first step of pressing the member into the through hole by engaging the protrusion with the inner wall of the through hole;
A second step of bringing the second member into contact with the first member such that the tip end of the fixing member press-fitted into the through hole in the press-fitting direction comes into contact with the first member;
A third step of joining the fixing member to the first member by plug welding or stud welding;
A method for joining dissimilar members.
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| JP2016235189A JP6711253B2 (en) | 2016-12-02 | 2016-12-02 | Dissimilar material joining method |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2016235189A JP6711253B2 (en) | 2016-12-02 | 2016-12-02 | Dissimilar material joining method |
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| JP2018089657A JP2018089657A (en) | 2018-06-14 |
| JP6711253B2 true JP6711253B2 (en) | 2020-06-17 |
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| JP2022117565A (en) | 2021-02-01 | 2022-08-12 | トヨタ自動車株式会社 | Manufacturing method for cast product or forged product having insert joined thereto |
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| US3095951A (en) * | 1960-01-11 | 1963-07-02 | Gen Electric | Article and method for joining dissimilar materials |
| JP2914875B2 (en) * | 1994-09-02 | 1999-07-05 | 新日本製鐵株式会社 | Method of fixing ceramic pieces by welding and ceramic pieces |
| JP2009291837A (en) * | 2008-06-09 | 2009-12-17 | Tetsuo Harada | Abrasion-resistant plate and method for mounting the same |
| JP5529645B2 (en) * | 2010-06-24 | 2014-06-25 | 千代田化工建設株式会社 | Fixing structure of lining plate to steel member |
| DE102010044886A1 (en) * | 2010-09-09 | 2011-05-12 | Daimler Ag | Method for joining of two components, comprises producing a hole in a first joining area of a first component, and arranging a joining area of a second component in overlapping with the joining area of the first component |
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