JP2001259863A - Method of spot joining for aluminum alloy - Google Patents

Method of spot joining for aluminum alloy

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Publication number
JP2001259863A
JP2001259863A JP2000075666A JP2000075666A JP2001259863A JP 2001259863 A JP2001259863 A JP 2001259863A JP 2000075666 A JP2000075666 A JP 2000075666A JP 2000075666 A JP2000075666 A JP 2000075666A JP 2001259863 A JP2001259863 A JP 2001259863A
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press
aluminum alloy
fit
hole
fit hole
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JP2000075666A
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JP3709972B2 (en )
JP2001259863A5 (en )
Inventor
Masaki Kumagai
Sunao Tanaka
正樹 熊谷
直 田中
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Sumitomo Light Metal Ind Ltd
住友軽金属工業株式会社
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Abstract

PROBLEM TO BE SOLVED: To provide a method of a spot joining for an aluminum alloy with which an excellent joining quality is given, an excellent joined state is kept, and the trace of a press fit hole does not remain at the joined part by applying a friction stir joining method. SOLUTION: A press-fitting pin 2a which is harder than an aluminum alloy plate 1 is press-fitted into plural laminated aluminum alloy palates 1a and 1b with a friction joining tool 3a having a triple structure. After stirred, the spilt part 6 of the aluminum alloy, which spilled out of a formed press-fit hole 5 is confined between the press-fitting pin 2a and an external ring 12, and an intermediate ring 10 of the friction joining tool 3a is pressed on the face of the aluminum alloy plate 1a, after a removing process of the press-fitting pin 2a from the press-fit hole 5 is initiated, to make to flow the spilt part 6 of the aluminum alloy with which the press-fit hole 5 is filled.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、アルミニウム合金の点溶接方法、特に、各種輸送機材の軽量化に際して、 BACKGROUND OF THE INVENTION The present invention is, point welding method of aluminum alloys, in particular, in light of various transport equipment,
部材にアルミニウム及びその合金を使用する場合、アルミニウム及びその合金部材を接合するためのアルミニウム合金の点接合方法に関する。 When using aluminum and its alloys to a member, to a point bonding method of an aluminum alloy for joining aluminum and its alloy member. ここで、アルミニウム合金部材は代表的には板材、形材をいうが、これら以外でもよく、点接合は板材相互の接合、板材と形材の接合等に適用することができる。 Here, the aluminum alloy member typically plate, refers to an profiles, may be other than these, the point bonding can be applied to the joint or the like of the plate material mutual joining, plate and profiles.

【0002】 [0002]

【従来の技術】地球環境の保護、省エネルギーの観点から、各種機材の軽量化、特に自動車など輸送機器の部材の軽量化が要請され、外装材(パネル材)、その他の部材について、従来の鋼材からアルミニウム及びその合金素材への転換が積極的に検討されている。 Protection of the Prior Art global environment from the viewpoint of energy saving, weight reduction of various equipment, in particular demand the weight member such as a transportation equipment automobile exterior materials (panels), the other members, the conventional steel conversion to aluminum and its alloy material have been studied actively from. この場合、従来の鋼材との比較において、アルミニウム合金材には種々の特性が要求されるが、このうち、アルミニウム合金材を互いに接合する方式も重要な課題の一つであり、アルミニウム合金材をパネル材として使用する自動車ボディの構造については、板プレス品を抵抗スポット溶接(点溶接)により接合するモノコック構造が主流となっている。 In this case, in comparison with the conventional steel, although the aluminum alloy material different properties are required, these, a method of joining an aluminum alloy material to each other is one of an important issue, the aluminum alloy material the structure of the automobile body to be used as a panel material, monocoque structure for joining a plate pressed product by resistance spot welding (spot welding) is the mainstream.

【0003】これまで、アルミニウム合金材に対する抵抗スポット溶接においては、鋼材に対するスポット溶接に使用されるクロム銅電極やジルコニウムクロム銅電極によるスポット溶接方式が流用されているが、アルミニウム合金材は、鋼材よりも導電率及び熱伝導度が高いので、スポット溶接の際、大電流での短時間通電が必要であり、このため、アルミニウム合金材の溶接においては、鋼材の溶接よりも電極の損耗が激しく、長期にわたり正常なナゲットを形成することが困難であるという問題がある。 Heretofore, in resistance spot welding for aluminum alloy material, although the spot welding method has been diverted by the chromium copper electrode or zirconium chromium copper electrode used for spot welding for steel, aluminum alloy material, steel material since even higher conductivity and thermal conductivity, when the spot welding requires a short current with a large current, Therefore, in the welding of aluminum alloy material, wear of the electrodes violently than welding of the steel, there is a problem that it is difficult to form a normal nugget for a long time.

【0004】このようなことから、セルフピアシングリベットによるアルミニウム合金材の接合が試みられている。 [0004] For this reason, the bonding of the aluminum alloy material has been attempted by self-piercing rivets. この接合方法は、重ね合わせた複数のアルミニウム合金材に、鋼製のリベットを打ち込む機械的接合の一種であり、抵抗スポット溶接より継ぎ手部分の品質が安定しているという利点があるが、第3部材として高価なリベットを必要とするという難点があり、工具の摩耗状態によっては接合不良が生じ可能性もある。 This bonding method, a plurality of aluminum alloy material superimposed, a kind of mechanical joining implanting steel rivets, but the quality of the joint portion from the resistance spot welding is advantageous in that stable, third There is a drawback of requiring an expensive rivet as members, depending state of wear of the tool is defective bonding could occur.

【0005】近年、入熱が少なく、軟化や歪みの程度が少ないアルミニウム合金材の突合わせ接合方法として摩擦攪拌接合が提案されている。 Recently, heat input is small, friction stir welding is proposed as a butt joining method of the degree is small aluminum alloy material softening and distortion. (特許第2712838 (Patent No. 2712838
号)この方式は、硬質な材料で作られた裏当ての上に、 No.) in this method, on a backing made of rigid material,
アルミニウム合金材等の軟質材を突合わせて拘束し、軟質材より硬質な摩擦接合工具の圧入ピンを突合わせ部に高速回転させながら圧入、移動させて、軟質材同士を摩擦接合するものであり、接合部分が溶融しないのが特徴となっている。 The soft material of aluminum alloy or the like is restrained butt, pressed while high speed rotation of the press-fit pins of the hard friction welding tool of soft material abutting portion, is moved, which frictionally bonding a soft material between , joining portion serves characterized that does not melt.

【0006】アルミニウム合金材同士の接合に上記の摩擦接合方法を適用した場合、抵抗スポット溶接やリベットによる接合よりも、継ぎ手品質が良く、良好な接合状態を安定して保持できることが期待できるが、これまでこの摩擦接合方式をスポット溶接に適用し得るかどうかについては明らかにされていない。 [0006] When applying the above friction welding method for bonding the aluminum alloy to each other, than joining by resistance spot welding or rivets, good joint quality, but it is expected to be stably maintained good bonding state, Previously not disclosed whether may apply this friction bonding method to spot welding.

【0007】 [0007]

【発明が解決しようとする課題】本発明は、アルミニウム合金材の接合における上記従来の問題点を解消するために、摩擦接合方式を利用したスポット溶接方法について試験、検討を重ねた結果としてなされたものであり、 The present invention 0005] In order to solve the above problems in the bonding of the aluminum alloy material, tested for spot welding method using the friction bonding method, was made as a result of repeated studies It is those,
その目的は、摩擦接合工具の圧入ピンを圧入し、これを移動させることなく、良好な接合状態を安定して保持することができ、接合部分に圧入ピンの圧入穴が残らないアルミニウム合金の点接合方法を提供することにある。 Its purpose is to press-fit pin of the friction welding tool pressed, without moving them, can be held stably with good bonding state, in terms of aluminum alloy press-fit hole of the press-fit pin does not remain in the bonding portion and to provide a bonding method.

【0008】 [0008]

【課題を解決するための手段】上記目的を達成するための本発明の請求項1によるアルミニウム合金の点接合方法は、複数の重ね合わせたアルミニウム合金材に対して、該アルミニウム合金材より硬質な摩擦接合工具の圧入ピンを回転させながら圧入して攪拌した後、該圧入ピンによる圧入穴を他所からの素材にて埋め込む段階を含むことを特徴とする。 Means for Solving the Problems] point bonding method of an aluminum alloy according to claim 1 of the present invention to achieve the above object, for a plurality of superimposed aluminum alloy material, hard than the aluminum alloy material after stirring the press-fit pin of the friction welding tool and pressed while being rotated, characterized in that it comprises the step of embedding the press-fit hole by piezoelectric input pin at the material from elsewhere.

【0009】請求項2によるアルミニウム合金の点接合方法は、前記圧入穴の埋め込み段階は、前記圧入ピンの除去工程と、該除去工程の開始以後、圧入ピンの圧入に伴って外方へ溢れ出たアルミニウム合金溢出部を圧入穴に流動させる埋入工程とからなることを特徴とする。 [0009] point bonding method according to claim 2 of aluminum alloy, the embedding step of the press-fit hole includes a removal step of the press-fit pin, since the start of the removing step, overflows outwardly with the press-fitting of the press-fit pin characterized by comprising the embedding the incoming process to flow to the aluminum alloy overflow portion press-fit hole was.

【0010】請求項3によるアルミニウム合金の点接合方法は、請求項2において、前記埋入工程は、外方へ溢れ出たアルミニウム合金溢出部を、三重構造の摩擦接合工具における圧入ピンと外部リングとの間に予め封じ込めておき、前記圧入穴からの圧入ピンの除去工程の開始以後、前記摩擦接合工具の中間リングをアルミニウム合金材面に押圧し、圧入穴にアルミニウム合金溢出部を流動させてなることを特徴とする。 [0010] point bonding method according to claim 3 of aluminum alloy, according to claim 2, wherein the implantation step, the aluminum alloy extravasation portion overflowing outwardly, the press-fit pin and the outer ring in the friction welding tool of the triple structure advance containment during, since the start of the removal process of the press-fit pins from the press-fit hole, the intermediate ring of the friction welding tool is pressed against the aluminum alloy material surface, comprising in flowing aluminum alloy overflow portion fit hole it is characterized in.

【0011】請求項4によるアルミニウム合金の点接合方法は、請求項2において、前記埋入工程は、外方へ溢れ出たアルミニウム合金溢出部を、前記複数のアルミニウム合金材の表裏面に当てた双方の二重構造の摩擦接合工具における一方の圧入ピン及び押圧リングとの間に予め封じ込めておき、前記圧入穴からの他方の圧入ピンの除去工程の開始以後、一方の圧入ピンをアルミニウム合金材面まで押し戻し、前記圧入穴にアルミニウム合金溢出部を流動させることを特徴とする。 [0011] point bonding method according to claim 4 of aluminum alloy, according to claim 2, wherein the implantation step, the aluminum alloy extravasation portion overflowing outward, was applied to the front and back surfaces of the plurality of aluminum alloy material leave containment advance between one of the press-fit pin and the pressure ring in the friction welding tool of both double structure, wherein after the start of the other press-fit pin removing step from the press-fitting holes, the aluminum alloy material of one of the press-fit pin pushed back to the surface, characterized in that flowing the aluminum alloy overflow portion into the press-fit hole.

【0012】また、請求項5によるアルミニウム合金の点接合方法は、請求項1において、前記圧入穴の埋め込み段階は、アルミニウム合金溢出部を、前記複数のアルミニウム合金材面に当てた二重構造の摩擦接合工具の押圧リングで押し付け、前記圧入穴に埋設されている部分の圧入ピンを圧入穴に残置して上部の圧入ピンを除去してなることを特徴とする。 Further, the point bonding method of an aluminum alloy according to claim 5 resides in that in Claim 1, embedding step of the press-fitting holes, the aluminum alloy extravasation section, of a double structure applied to the plurality of aluminum alloy material surface pressed with pressure ring of the friction welding tool, characterized by comprising removing the upper part of the press-fit pin and leaving the press-fit pin portions being embedded in the press-fit hole in the press-fit hole.

【0013】 [0013]

【発明の実施の形態】以下、図面に基づいて、本発明の実施の形態を詳述する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the drawings, detailed embodiments of the present invention. これらは本発明の好ましい実施形態を例示するものであり、本発明はこれらの形態に限定されるものではない。 These are intended to illustrate preferred embodiments of the present invention, the present invention is not limited to these forms.

【0014】図1〜6は、本発明によりアルミニウム合金板材を点接合する場合の実施形態を説明する断面図である。 [0014] Figure 1-6 is a cross-sectional view illustrating an embodiment in which a point joining the aluminum alloy sheet material according to the present invention. 本発明のアルミニウム合金の点接合方法は、まず、複数のアルミニウム合金板1を重ね合わせる。 Point bonding method of an aluminum alloy of the present invention, first, overlapping the plurality of aluminum alloy plate 1. 図1 Figure 1
では、2枚のアルミニウム合金板1a、1bを重ね合わせている。 So two aluminum alloy plates 1a, are superimposed 1b. 次に、これら全てのアルミニウム合金板1に対して、圧入可能な長さの圧入ピン2を有する摩擦接合工具3を図2に示すように回転させながら圧入する。 Then, all of the aluminum alloy plate 1 thereof, it is pressed while the friction welding tool 3 with a press-fit pin 2 of the press-possible length is rotated as shown in FIG. この圧入ピン2は、回転円柱体4に一体に取り付けられ、 The press-fit pin 2 is integrally mounted to the rotating cylinder 4,
これら圧入ピン2及び回転円柱体4はアルミニウム合金板1の硬度より硬く耐熱性のある材質により構成されている。 These press-fit pins 2 and rotating cylindrical body 4 is composed of a material with a harder heat resistance than the hardness of the aluminum alloy plate 1.

【0015】圧入ピン2がアルミニウム合金板1に圧入され攪拌されると、圧入穴5が形成された分だけ、外方にアルミニウム合金溢出部6が溢れ出ると共に、攪拌部7が形成される。 The press-fit pin 2 when agitated is pressed into the aluminum alloy plate 1, an amount corresponding to the press-fitting hole 5 is formed, together with an aluminum alloy overflow unit 6 is overflowing outward, stirring unit 7 is formed. 摩擦接合は、図3に示すように、圧入ピン2の先端部がアルミニウム合金板1bまで圧入されるとともに回転円柱体4下端の肩部で攪拌部7を押圧することにより行われるが、そのまま圧入ピン2を圧入穴5から引き抜くと、図4に示すように、摩擦接合部分に圧入穴5が空いたままとなり強度的に問題となり、外観的にも好ましくない場合があるため、本発明においては、圧入穴5を、他所からの素材にて埋め込む段階を必須とする。 Friction joint, as shown in FIG. 3, but the tip portion of the press-fit pin 2 is performed by pressing the stirring unit 7 in the shoulder portion of the rotating cylindrical body 4 bottom while being pressed to the aluminum alloy plate 1b, it is pressed when pulled out pin 2 from the press-fitting hole 5, as shown in FIG. 4, a problem remains with it strength is press-fit hole 5 vacated friction joints, there are cases undesirable in appearance, in the present invention the press-fitting hole 5, as essential step of embedding in the material from elsewhere. 圧入穴5の埋め込み段階は、熱的手段あるいは熱的手段及び機械的手段の複合方式で行われる。 Embedding step of press-fitting hole 5 is performed in a composite manner of thermal means or thermal means and mechanical means. なお、他所からの素材とは、接合されるアルミニウム合金の圧入穴以外の部分又は接合されるアルミニウム合金とは別体の異材質のものをいう。 Note that the material from elsewhere, refers to the different materials separate from the aluminum alloy to be partially or bonding other than press-fit hole of the bonded is an aluminum alloy.

【0016】好ましい圧入穴の埋め込み段階は、圧入ピン2の除去工程と、該除去工程の開始以後、圧入ピン2 Preferred embedding step of press-fitting holes, a removal step of the press-fit pin 2, after the start of the removing step, press fit pins 2
の圧入攪拌の際に圧入穴5から外方へ溢れ出たアルミニウム合金溢出部6を圧入穴5に流動させる埋入工程とからなる。 The aluminum alloy overflow unit 6 overflowing outward from the press-fitting hole 5 during the press-fitting agitation consisting of implantation process to flow to the press-fit hole 5. すなわち、除去工程は図4に示す工程、埋入工程は図5に示す工程であり、圧入穴5周辺にあるアルミニウム合金溢出部6を圧入穴5に戻すものである。 That is, the removing step process shown in FIG. 4, implantation step is a step shown in FIG. 5, in which returning the aluminum alloy overflow unit 6 Surrounding fit hole 5 to press-fit hole 5. なお、埋入工程は、後に詳述するように、アルミニウム合金溢出部6以外の物8を、図6に示すように、圧入穴5 Incidentally, implantation process, as described later in detail, the aluminum alloy overflow section 6 other than the object 8, as shown in FIG. 6, the press-fitting hole 5
に埋設しても良い。 It may be buried in. この場合は、溢れ出ようとするアルミニウム合金溢出部6をアルミニウム合金板1aの表面に押し付けて平らにしたり、アルミニウム合金溢出部6 In this case, or an aluminum alloy overflow unit 6 to get away overflow flattened against the surface of the aluminum alloy plate 1a, an aluminum alloy extravasation 6
の量を減らす等の手段が必要となる。 Means are required, such as reducing the amount of.

【0017】次に、図7〜8により、前記埋入工程の他の実施形態について説明する。 [0017] Next, FIG. 7-8, a description of another embodiment of the implantation process. 図1〜3までの工程は同様にして行われるが、三重構造の摩擦接合工具3aを使用する点で異なる。 Steps up to FIG. 1-3 is carried out in the same manner, but differs in that it uses a friction welding tool 3a triple structure. この場合、摩擦接合工具3aは、圧入ピン2aが中間リング10の摺動孔11に回転自在且つ軸方向移動自在に嵌合し、更に中間リング10が外部リング12の摺動孔13に回転自在かつ軸方向移動自在に嵌合してなり、圧入ピン2a及び中間リング10は別々に回転できるようになっている。 In this case, the friction welding tool 3a is press-fit pin 2a fits freely rotatable and axially moving the sliding hole 11 of the intermediate ring 10, freely rotates further intermediate ring 10 is a sliding hole 13 of the outer ring 12 and it becomes fitted into axially movably, press fit pins 2a and the intermediate ring 10 can be rotated separately. 従って、アルミニウム合金板1に裏当て材14を当てる一方、外部リング1 Therefore, while applying the backing material 14 to the aluminum alloy plate 1, the outer ring 1
2をアルミニウム合金板1aに当接させた状態で、図1 2 being in contact with the aluminum alloy plate 1a, Figure 1
〜3までの工程を経るが、図3における工程で圧入穴5 Go through the steps up to 3, but the press-fitting holes 5 in the process of FIG. 3
の外方へ溢れ出たアルミニウム合金溢出部6を、中間リング10で押圧はせず僅かに上昇させて圧入ピン2aと外部リング12との間に封じ込め、圧入穴5から圧入ピン2aの上昇開始以後、中間リング10を回転させながらアルミニウム合金板1a面に押圧して行き、圧入穴5 Of an aluminum alloy overflow unit 6 which has overflowed outwardly pressed is slightly raised without an intermediate ring 10 sealed in between the press-fit pin 2a and the outer ring 12, increase start of the press-fit pin 2a from fit hole 5 Thereafter, continue to press the aluminum alloy plate 1a surface while the intermediate ring 10 is rotated, press-fit hole 5
内にアルミニウム合金溢出部6を埋め込めば、図8に示すような点摩擦接合部が形成される。 By embedding an aluminum alloy overflow unit 6 within the friction junctions points as shown in FIG. 8 is formed.

【0018】図9〜10により、前記埋入工程の更に他の実施形態について説明する。 [0018] The 9-10, still another embodiment will be explained in the implantation process. 図1〜3までの工程は同様にして行われるが、二重構造の摩擦接合工具20a、 Although steps up 1-3 is carried out in the same manner, the friction welding tool 20a of the dual structure,
20bからなる2台一組の摩擦接合工具20を使用する点で異なる。 Two consisting 20b differs in that it uses a set of friction welding tool 20. この場合、摩擦接合工具20a、20b In this case, friction welding tool 20a, 20b
は、上記摩擦接合工具3aから外部リング12を外した構造のものである。 It has a structure in which remove the outer ring 12 from the friction welding tool 3a. すなわち、圧入ピン21が押圧リング22の摺動孔23に回転自在且つ軸方向移動自在に嵌合してなり、圧入ピン21及び押圧リング22は別々に回転できるようになっている。 That is, press-fit pin 21 is rotatably and becomes fitted into axially movably in the sliding hole 23 of the pressure ring 22, press fit pins 21 and pressure ring 22 can be rotated separately. 従って、アルミニウム合金板1bに、裏当て材として摩擦接合工具20bを当て、図1〜3までの工程を経るが、図3の過程で圧入穴5の外方へ溢れ出るアルミニウム合金溢出部6を、圧入ピン21bを僅かに下降させて摩擦接合工具20bの圧入ピン21b及び押圧リング22bとの間に封じ込め、 Therefore, the aluminum alloy plate 1b, applying a friction welding tool 20b as backing material, but through the steps up to FIG. 1-3, the aluminum alloy overflow unit 6 overflowing in the process of FIG. 3 to the outside of the press-fit hole 5 the press-fit pin 21b is slightly lowered containment between the press-fit pin 21b and the pressing ring 22b of the friction welding tool 20b, the
圧入穴5から摩擦接合工具20aの圧入ピン21aの上昇開始以後、圧入ピン21bを回転させながらアルミニウム合金板1b面まで押し戻して行き、圧入穴5内にアルミニウム合金溢出部6を埋め込めば、図10に示すような点摩擦接合部が形成される。 Increase after the start of the press-fit pins 21a of the friction welding tool 20a from the press-fitting hole 5, while rotating the press-fit pin 21b go pushed back up aluminum alloy plate 1b side, by embedding an aluminum alloy overflow unit 6 in the fit hole 5, FIG. 10 friction joint points shown in is formed.

【0019】更に、図11〜12により、圧入穴の埋め込み段階の他の実施形態について説明する。 Furthermore, by 11-12, a description of another embodiment of an embedded phase of press-fit hole. 図1〜3までの工程は同様にして行われ、二重構造の摩擦接合工具20を1台使用する点と圧入ピンとして高強度のアルミニウム合金を使用する点で異なる。 Steps up to FIG. 1-3 is carried out in the same manner, except that using a high strength aluminum alloy friction welding tool 20 of the double structure as a point and press-fit pins used one. この場合、この摩擦接合工具20は、図9〜10の実施形態で使用する摩擦接合工具20と同一構造のものである。 In this case, the friction welding tool 20 is of the friction welding tool 20 of the same structure used in the embodiment of FIG. 9-10. アルミニウム合金板1bに裏当て材14を当て、図1〜3までの工程を経て、その過程で圧入穴5の外方へ溢れ出ようとするアルミニウム合金溢出部6を、摩擦接合工具20の押圧リング22により押さえ付けると共にアルミニウム合金流出物6を平らにし、圧入ピン21を引き上げる際に、圧入穴5に埋設されている部分の圧入ピン21Rを切断又は破断させて圧入穴5に残置し、残りの上部の圧入ピン21を引き上げれば、図12に示すような点摩擦接合部が形成される。 Applying a backing material 14 to the aluminum alloy plate 1b, through the steps up to FIG 1-3, an aluminum alloy overflow unit 6 to get away overflow in the process to the outside of the press-fit hole 5, the pressing of the friction welding tool 20 flatten the aluminum alloy effluent 6 with pressing by the ring 22, when pulling the press fit pins 21, the press-fit pin 21R of a portion which is embedded in the press-fit hole 5 by cutting or breaking and leaving the press-fit hole 5, the remaining Raising the upper portion of the press-fit pin 21, friction junctions points as shown in FIG. 12 is formed.

【0020】以下、本発明の効果を確認するための実施例について説明する。 [0020] Hereinafter, a description will be given of an embodiment for confirming the effect of the present invention. 実施例1 図7に示すように、アルミニウム合金板(材質:518 As shown in Example 1 Figure 7, an aluminum alloy plate (material: 518
2、調質:O材、厚さ:1mm)を2枚重ね合わせ、裏側から鋼製裏当てを当てがい、表側から三重構造の複動型摩擦接合工具を回転させながらアルミニウム合金板表面に当接し、圧入ピンを突出させてアルミニウム合金板に差し込み、回転数1000rpmで攪拌した。 2, temper: O material, thickness: 1 mm) the overlay two, purchase against a steel backing from the back side, to the aluminum alloy plate surface while rotating the double acting friction welding tool of the triple structure from the front side those contact, it is protruded a press-fit pin inserted into the aluminum alloy plate, and stirred at a rotational speed of 1000 rpm.

【0021】初期の圧入ピンの差し込み長さは、板表面から1.2mmとし、中間リングを板表面から0.5m The initial press-fit pin insertion length of, and 1.2mm from the plate surface, 0.5 m the intermediate ring from the plate surface
m窪ませ、その状態で1秒間待った後、圧入ピンを抜きながら中間リングを板表面に押し付けて点接合を行った。 m recessed, after waiting for one second in this state, the intermediate ring was bonded pressed point on the plate surface while venting the press-fit pin. 使用した複動型摩擦接合工具は、圧入ピンの直径が4mm、中間リングの直径が8mm、外部リングの直径が20mmのものである。 Double acting friction welding tool used, the diameter of the press-fit pin 4 mm, the diameter of the intermediate ring is 8 mm, the diameter of the outer ring is of 20 mm.

【0022】得られた点接合部は、表面が0.1mm以内に窪んでいただけで圧入穴が残る等の外見上の欠陥は無く、径5mmのナゲット(攪拌部)が形成された。 The resulting point junction surface without defects in appearance, such as leaving a press-fit hole only has recessed within 0.1 mm, diameter 5mm nuggets (stirring portion) is formed. この継ぎ手部分の剪断引張試験の結果は、同一径のナゲットを有する抵抗スポット溶接継ぎ手の120%以上の強度を維持していた。 Results shear tensile test in this joint portion, maintained a 120% or more of the intensity of the resistance spot welding joint having a nugget having the same diameter.

【0023】実施例2 図9に示すように、アルミニウム合金板(材質:611 As shown in Example 2 FIG. 9, an aluminum alloy plate (material: 611
1、調質:T4、厚さ:0.8mm)を2枚重ね合わせ、接合部近傍を位置決め治具で挟み固定し、表裏面から、二重構造の複動型摩擦接合工具(圧入ピン直径:4 1, temper: T4, thickness: 0.8 mm) the overlay two, near the junction sandwiched and fixed by the positioning jig, the front and back surfaces, double acting friction welding tool (press-fit pin diameter of the double structure : 4
mm、押圧リング直径:8mm)をそれぞれ回転させながら2枚重ねの板に当接し、表面側の複動型摩擦接合工具の圧入ピンを1mm突出させてアルミニウム合金板に差し込み、回転数1500rpmで攪拌した。 mm, pressure ring diameter: 8 mm) to contact with the plate of the two-ply while rotating, respectively, the press-fit pin of the surface side of the double-acting friction welding tool by 1mm projecting plug to an aluminum alloy plate, stirred at a rotation speed of 1500rpm did.

【0024】同時に、裏面側の複動型摩擦接合工具の圧入ピンを初期に1mm窪ませ、表面側の複動型摩擦接合工具の圧入ピンを板表面から0.1mmの深さになるまで引き抜き、裏面側の複動型摩擦接合工具の圧入ピンを板表面から0.1mmの深さになるまで押し込み、点接合した。 [0024] At the same time, the press-fit pin of the back side of the double-acting friction welding tool recessed 1mm initially, pull the press-fit pin of the surface side of the double-acting friction welding tool from the sheet surface to a depth of 0.1mm , pushing the press fit pins on the back side of the double-acting friction welding tool from the sheet surface to a depth of 0.1 mm, and the point bonded.

【0025】得られた点接合部は、外見上の欠陥が無く、且つ接合部に圧入穴を残すことなく、径4.6mm [0025] The resulting point junction, no defects in appearance, and without leaving the press-fit hole at the junction, diameter 4.6mm
のナゲットが形成された。 Of the nugget is formed. この継ぎ手部分の剪断引張試験の結果は、同一径のナゲットを有する抵抗スポット溶接継ぎ手の150%以上の強度を維持していた。 Results shear tensile test in this joint portion, maintained a more than 150% of the intensity of the resistance spot welding joint having a nugget having the same diameter.

【0026】実施例3 図11に示すように、アルミニウム合金板(材質:11 As shown in Example 3 Fig. 11, an aluminum alloy plate (material: 11
00、調質:O材、厚さ:3mm)を2枚重ね合わせ、 00, temper: O material, thickness: 3mm) superimposing two pieces,
裏側から鋼製裏当てを当てがい、表側から二重構造の複動型摩擦接合工具(押圧リングの外径:15mm、押圧リングの中央孔の内径:7mm)を回転させながら2枚重ねの板に当接した。 Purchase against a steel backing from the back side, double acting friction welding tool of the double structure from the front side (the outer diameter of the pressure ring: 15 mm, inner diameter of the center hole of the pressing ring: 7 mm) plate two stacked while rotating the in contact with the. この押圧リングの中央孔に、アルミニウム合金(材質:7075、調質:T6)の棒を予め嵌合し、中央孔から4.5mm突出させて固定し圧入ピンの役割を担わせ、2枚重ねの板に差し込み、回転数2000rpmで攪拌した。 The central hole of the pressing ring, aluminum alloy (material: 7075, refining: T6) rod previously fitted to the, from the central bore is 4.5mm protrude so play a role of fixing pressed pins, two-ply inserted into the plate, followed by stirring at a rotational speed of 2000 rpm.

【0027】1秒間待った後、回転数を急に500rp [0027] After waiting for one second, suddenly the number of revolutions 500rp
mに落とし、再度2000rpmに上げたところ、圧入ピンのアルミニウム合金棒が破断して、攪拌部に埋め込まれ、圧入ピンの圧入穴内に残置され、点接合部が形成された。 Dropped m, was raised again to 2000 rpm, and aluminum alloy rod of the press-fit pin is broken, embedded in the agitation part is left on the press-fit hole of the press-fit pin point junction is formed.

【0028】得られた点接合部は、外見上の欠陥は無く、且つ接合部には圧入穴を残すことなく7075−T [0028] The resulting point junctions, defects in appearance without and in the joint without leaving fit hole 7075-T
6の棒が埋め込まれており、表裏のアルミニウム合金板は健全に接合されていたた。 6 bar is embedded, the front and back of the aluminum alloy plate was been soundly joined. この継ぎ手部分の剪断引張試験の結果は、同一径のナゲットを有する抵抗スポット溶接継ぎ手の200%の強度を維持していた。 Results shear tensile test in this joint portion, maintained a 200% of the intensity of the resistance spot welding joint having a nugget having the same diameter.

【0029】 [0029]

【発明の効果】以上のとおり、請求項1の発明によれば、接合過程で生じた圧入穴を他所からの素材で埋め込むため、接合部分に圧入穴が残ることがなく、継ぎ手品質が良く疲労強度に優れ、良好な接合状態を安定して保持する点接合部を得ることが出来る。 As evident from the foregoing description, according to the invention of claim 1, for embedding the press-fit hole generated in the bonding process in the material from elsewhere, without leaving a press-fit hole in the joint portion, joint quality is good fatigue excellent strength, good bonding state stably can be obtained junction point for holding.

【0030】請求項2の発明によれば、接合過程で生じた圧入穴を、同じく接合過程で圧入穴から溢れ出たアルミニウム合金溢出部を流動させて埋め込むため、上記効果に加えて、接合過程で生じる圧入穴周辺の膨らみを防止出来、良好な表面状態の点接合部が得られる。 According to the invention of claim 2, for implanting in a press-fit hole generated in the bonding process, thereby also flow the aluminum alloy extravasation portion overflowing from the fit hole in bonding process, in addition to the above effects, bonding process can prevent bulging of the press-fit hole near occurring at the point junction of good surface state is obtained.

【0031】請求項3の発明によれば、接合過程で圧入穴から溢れ出るアルミニウム合金溢出部の流動エリアを予め規制しておき、接合過程で生じた圧入穴から圧入ピンを引き抜くと共に圧入穴にアルミニウム合金溢出部を流動させて埋め込むから、上記効果に加えて、接合と圧入穴の埋入とを連続して行うことが出来るため高効率であり、また、アルミニウム合金溢出部の流動エリアを規制してあるから、良好な表面状態の点接合部が得られ、 According to the invention of claim 3, the flow area of ​​the aluminum alloy overflow portion overflowing from the fit hole at the joint process advance regulation, the press-fit hole with pulling the press fit pins from fit hole produced by joining process since embedding aluminum alloy overflowing portion by flow, in addition to the above effects, bonding with a high efficiency for the implantation can be carried out continuously in press-fit hole, also regulates the flow area of ​​the aluminum alloy extravasation unit since then are point joint good surface condition is obtained,
更に裏当て治具の構造も単純化することが出来る。 Furthermore the structure of the backing jig can also be simplified.

【0032】請求項4の発明によれば、接合過程で圧入穴から溢れ出ようとするアルミニウム合金溢出部の流動エリアを、圧入穴の反対面となるなるように予め規制しておき、接合過程で生じた圧入穴から圧入ピンを引き抜くと共に、反対面の圧入ピンを押圧して圧入穴に反対面にあるアルミニウム合金流出物を流動させて埋め込むから、上記効果に加えて、接合と圧入穴の埋入とを連続して行うことが出来るため高効率であり、また、表裏面にわたる接合部が形成され、安定したナゲット径が得られて、接合強度が高く且つ良好な表裏面状態の点接合部が得られる。 According to the invention of claim 4, the flow area of ​​the aluminum alloy overflow portion to get out overflowing the fit hole in bonding process, preliminarily regulated such that the opposite face of the press-fit hole, the bonding process in conjunction with pulling the press fit pins from fit hole caused, because embedded by flow of aluminum alloy effluent on the opposite side to the press-fit hole by pressing the press-fit pin on the opposite side, in addition to the above effects, it joined with the press-fit hole a high efficiency since it is possible to perform the embedded continuously, also joint is formed over the front and rear surfaces, stably nugget diameter is obtained, the bonding points of high and good top- state bonding strength part can be obtained.

【0033】請求項5の発明によれば、アルミニウム溢出部出物を押し付け、接合に用いた圧入ピンを圧入穴に残置して埋設するから、上記効果に加えて、接合と圧入穴の埋設とをほぼ同時に行うことが出来るため高効率であり、裏当て治具の構造も単純化することが出来る。 According to the invention of claim 5, pressing the aluminum extravasation unit extract, since buried by leaving the press-fit pins used in joining the press-fit hole, in addition to the above effects, and buried in the bonding and press-fit hole the a high efficiency because it can be performed almost simultaneously, the structure of the backing jig can also be simplified.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の点接合方法の実施形態を説明するための断面図(第1工程)である。 It is FIG. 1 is a cross-sectional view for the embodiment will be described in terms bonding method of the present invention (first step).

【図2】本発明の点接合方法の実施形態を説明するための断面図(第2工程)である。 A 2 is a cross-sectional view for the embodiment will be described in terms bonding method of the present invention (second step).

【図3】本発明の点接合方法の実施形態を説明するための断面図(第3工程)である。 It is FIG. 3 is a cross-sectional view for the embodiment will be described in terms bonding method of the present invention (third step).

【図4】本発明の点接合方法の実施形態を説明するための断面図(第4工程)である。 It is a sectional view for explaining an embodiment of a bonding method point of the present invention; FIG (fourth step).

【図5】本発明の点接合方法の実施形態を説明するための断面図(第5工程)である。 A Figure 5 is a cross-sectional view for explaining an embodiment of a bonding method aspect of the present invention (fifth step).

【図6】本発明の点接合方法の実施形態を説明するための断面図(第6工程)である。 It is FIG. 6 is a cross-sectional view for explaining an embodiment of a bonding method aspect of the present invention (sixth step).

【図7】本発明の点接合方法の他の実施形態を説明するための断面図である。 7 is a cross-sectional view for explaining another embodiment of a point bonding method of the present invention.

【図8】図7に示す点接合方法による接合後の状態を示す断面図である。 8 is a sectional view showing a state after bonding by the bonding method points shown in FIG.

【図9】本発明の点接合方法のさらに他の実施形態を説明するための断面図である。 9 is a sectional view for explaining still another embodiment of a point bonding method of the present invention.

【図10】図9に示す点接合方法による接合後の状態を示す断面図である。 It is a sectional view showing a state after bonding by [10] joining method points shown in FIG.

【図11】本発明の点接合方法の別の実施形態を説明するための断面図である。 11 is a sectional view for explaining another embodiment of a point bonding method of the present invention.

【図12】図11に示す点接合方法による接合後の状態を示す断面図である。 It is a sectional view showing a state after bonding by [12] joining method points shown in FIG. 11.

【符号の説明】 DESCRIPTION OF SYMBOLS

1、1a、1b アルミニウム合金板 2、2a、21、21a、21b、21R 圧入ピン 3、3a、20、20a、20b 摩擦接合工具 4 回転円柱体 5 圧入穴 6 アルミニウム合金溢出部 7 攪拌部 8 アルミニウム合金溢出部以外の物 10 中間リング 11、13、23 摺動孔 12 外部リング 14 裏当て材 22、22a、22b 押圧リング 1, 1a, 1b aluminum alloy plate 2,2a, 21,21a, 21b, 21R press-fit pin 3, 3a, 20, 20a, 20b friction welding tool 4 rotates the cylindrical body 5 press-fit hole 6 aluminum alloy overflow unit 7 stirring unit 8 Aluminum object 10 intermediate ring other than alloy overflow portion 11,13,23 sliding hole 12 outer ring 14 backing 22, 22a, 22b pressure ring

Claims (5)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 複数の重ね合わせたアルミニウム合金材に対して、該アルミニウム合金材より硬質な摩擦接合工具の圧入ピンを回転させながら圧入して攪拌した後、該圧入ピンによる圧入穴を他所からの素材にて埋め込む段階を含むことを特徴とするアルミニウム合金の点接合方法。 Respect 1. A aluminum alloy material with a plurality of superimposed, agitated with pressed while rotating the press-fit pins of the hard friction welding tool from the aluminum alloy material, the press-fit hole by piezoelectric input pin from elsewhere joining method point of the aluminum alloy comprising the step of embedding the at material.
  2. 【請求項2】 前記圧入穴の埋め込み段階は、前記圧入ピンの除去工程と、該除去工程の開始以後、圧入ピンの圧入に伴って外方へ溢れ出たアルミニウム合金溢出部を圧入穴に流動させる埋入工程とからなる請求項1記載のアルミニウム合金の点接合方法。 Wherein the embedding step of the press-fitting hole, flow and removal step of the press-fit pin, since the start of the removing step, the aluminum alloy extravasation portion overflowing outwardly with the press-fitting of the press-fit pin fit hole joining method point of claim 1 wherein the aluminum alloy embedding consisting of input step of.
  3. 【請求項3】 前記埋入工程は、外方へ溢れ出たアルミニウム合金溢出部を、三重構造の摩擦接合工具における圧入ピンと外部リングとの間に予め封じ込めておき、圧入穴からの圧入ピンの除去工程の開始以後、前記摩擦接合工具の中間リングをアルミニウム合金材面に押圧し、 Wherein the implantation step, the aluminum alloy extravasation portion overflowing outwardly advance containment between the press-fit pin and the outer ring in the friction welding tool of the triple structure, the press-fit pins from fit hole since the beginning of the removal process, the intermediate ring of the friction welding tool is pressed against the aluminum alloy surface,
    圧入穴にアルミニウム合金溢出部を流動させることを特徴とする請求項2記載のアルミニウム合金の点接合方法。 Joining method point of claim 2, wherein the aluminum alloy, characterized in that to the press-fit hole flow the aluminum alloy extravasation unit.
  4. 【請求項4】 前記埋入工程は、外方へ溢れ出たアルミニウム合金溢出部を、前記複数のアルミニウム合金材の表裏面に当てた双方の二重構造の摩擦接合工具における一方の圧入ピン及び押圧リングとの間に予め封じ込めておき、前記圧入穴からの他方の圧入ピンの除去工程の開始以後、一方の圧入ピンをアルミニウム合金材面まで押し戻し、前記圧入穴にアルミニウム合金溢出部を流動させることを特徴とする請求項2記載のアルミニウム合金の点接合方法。 Wherein said implantation step, the aluminum alloy extravasation portion overflowing outward, one of the press-fit pin in a friction welding tool of the double structure of both was applied to the front and back surfaces of the plurality of aluminum alloy material and advance containment between the pressing ring, since the start of the removal process of the other press-fit pins from the press-fit hole, pushing back one of the press-fit pin to the aluminum alloy surface, flowing the aluminum alloy overflow portion to the fit hole joining method point of claim 2, wherein the aluminum alloy, characterized in that.
  5. 【請求項5】 前記圧入穴の埋め込み段階は、アルミニウム合金溢出部を、前記複数のアルミニウム合金材面に当てた二重構造の摩擦接合工具の押圧リングで押し付け、前記圧入穴に埋設されている部分の圧入ピンを圧入穴に残置して上部の圧入ピンを除去することを特徴とする請求項1記載のアルミニウム合金の点接合方法。 Embedding stage wherein said press-fitting holes, the aluminum alloy overflow portion, pressed by a pressing ring of the friction welding tool of the double structure was applied to the plurality of aluminum alloy material surface, it is embedded in the press-fit hole joining method point of claim 1 wherein the aluminum alloy, characterized in that by leaving the press-fit pin portions to press-fit hole to remove the upper portion of the press-fit pin.
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