JP2018108595A - Joining method - Google Patents

Joining method Download PDF

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JP2018108595A
JP2018108595A JP2017000452A JP2017000452A JP2018108595A JP 2018108595 A JP2018108595 A JP 2018108595A JP 2017000452 A JP2017000452 A JP 2017000452A JP 2017000452 A JP2017000452 A JP 2017000452A JP 2018108595 A JP2018108595 A JP 2018108595A
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metal member
auxiliary member
joining
auxiliary
friction
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堀 久司
Hisashi Hori
久司 堀
伸城 瀬尾
Nobushiro Seo
伸城 瀬尾
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Nippon Light Metal Co Ltd
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Nippon Light Metal Co Ltd
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Priority to JP2017000452A priority Critical patent/JP2018108595A/en
Priority to PCT/JP2017/020872 priority patent/WO2017221684A1/en
Priority to CN201780005943.5A priority patent/CN108430687B/en
Publication of JP2018108595A publication Critical patent/JP2018108595A/en
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Abstract

PROBLEM TO BE SOLVED: To provide a joining method which can reduce a load imposed on a friction agitation device, and is high in degree of freedom of a layout.SOLUTION: A joining method for joining a first metal member 1 and a second metal member 2 by using a joining rotating tool F having an agitation pin F2 includes: an abutment process for forming an abutment part J1 by making an end face 1a of the first metal member 1 abut on a bottom face 2e of a recessed groove 2d by inserting the end face 1a into the recessed groove 2d of the second metal member 2 having the recessed groove 2d at a rear surface 2c; an arrangement process for arranging an auxiliary member 10 to a position corresponding to the first metal member 1 out of a surface 2b of the second metal member 2; and a friction agitation process for friction-agitation joining the abutment part J1 by inserting the rotating agitation pin F2 from a surface 10a side of the auxiliary member 10, and relatively moving the joining rotating tool F in a state that only the agitation pin F2 contacts with the second metal member 2 and the auxiliary member 10, or in a state that only the agitation pin contacts with the first metal member 1, the second metal member 2 and the auxiliary member 10.SELECTED DRAWING: Figure 2

Description

本発明は、金属部材同士を摩擦攪拌接合する接合方法に関する。   The present invention relates to a joining method for friction stir welding of metal members.

特許文献1,2には、金属部材同士を正面視T字状に突き合わせ、突合せ部を摩擦攪拌接合する技術が開示されている。当該従来技術は、第一金属部材の端面と第二金属部材の裏面とを突き合わせた後、第二金属部材の表面側から回転ツールを挿入して突合せ部を摩擦攪拌接合するというものである。   Patent Documents 1 and 2 disclose a technique in which metal members are butted in a T shape when viewed from the front, and the butted portion is friction stir welded. In the related art, after the end surface of the first metal member and the back surface of the second metal member are butted together, a rotating tool is inserted from the surface side of the second metal member, and the butted portion is friction stir welded.

特許第3947271号公報Japanese Patent No. 3947271 特許第4056587号公報Japanese Patent No. 4056587

従来技術であると、回転ツールのショルダ部を第二金属部材の表面に接触させて摩擦攪拌を行うため、摩擦攪拌装置にかかる負荷が大きくなるという問題がある。また、回転ツールのショルダ部を第二金部材の表面に接触させるため、塑性化領域の幅が大きくなる。第一金属部材と第二金属部材の内隅から塑性流動材が流出しないようにするためには第一金属部材の板厚を大きくしなければならない。   In the case of the conventional technique, since the shoulder portion of the rotary tool is brought into contact with the surface of the second metal member to perform friction stirring, there is a problem that a load applied to the friction stirring device increases. Further, since the shoulder portion of the rotary tool is brought into contact with the surface of the second gold member, the width of the plasticizing region is increased. In order to prevent the plastic fluid from flowing out from the inner corners of the first metal member and the second metal member, the plate thickness of the first metal member must be increased.

このような観点から、本発明は、摩擦攪拌装置にかかる負荷を小さくすることができるとともに設計の自由度が高い接合方法を提供することを課題とする。   From such a viewpoint, an object of the present invention is to provide a joining method that can reduce the load applied to the friction stirrer and has a high degree of design freedom.

このような課題を解決するために本発明は、攪拌ピンを備えた回転ツールを用いて第一金属部材と第二金属部材とを接合する接合方法であって、裏面に凹溝を有する前記第二金属部材の前記凹溝に、前記第一金属部材の端面を挿入して前記端面を前記凹溝の底面に突き合わせて突合せ部を形成する突合せ工程と、前記第二金属部材の表面のうち前記第一金属部材に対応する位置に補助部材を配置する配置工程と、回転する前記攪拌ピンを前記補助部材の表面側から挿入し、前記攪拌ピンのみを、前記第二金属部材及び前記補助部材、又は、前記第一金属部材、前記第二金属部材及び補助部材に接触させた状態で前記回転ツールを相対移動させて前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含むことを特徴とする。   In order to solve such a problem, the present invention is a joining method for joining a first metal member and a second metal member using a rotary tool provided with a stirring pin, wherein the first metal member has a concave groove on the back surface. A butting step of inserting an end face of the first metal member into the concave groove of the two metal member and butting the end face against the bottom surface of the concave groove to form a butting portion; and of the surface of the second metal member, An arrangement step of arranging an auxiliary member at a position corresponding to the first metal member, and inserting the rotating stirring pin from the surface side of the auxiliary member, and only the stirring pin, the second metal member and the auxiliary member, Or a friction agitation step of frictionally agitating the abutting portion by relatively moving the rotary tool in a state of being in contact with the first metal member, the second metal member, and the auxiliary member. .

かかる接合方法によれば、攪拌ピンのみを、第二金属部材及び補助部材、又は、第一金属部材、第二金属部材及び補助部材に接触させた状態で摩擦攪拌接合を行うため、従来技術に比べて摩擦攪拌装置にかかる負荷を軽減することができる。また、攪拌ピンのみを挿入するため、塑性化領域の幅を小さくすることができる。これにより、第一金属部材の板厚も小さくすることができるため、設計の自由度を高めることができる。また、第一金属部材及び第二金属部材に加えて、補助部材も摩擦攪拌接合することにより、接合部の金属不足を防ぐことができる。さらに、第二金属部材の凹溝に第一金属部材の端面を挿入して当該端面を凹溝の底面に突き合わせるため、突合せ工程時に第一金属部材と第二金属部材との位置ずれを防ぐことができる。   According to this joining method, the friction stir welding is performed in a state where only the stirring pin is in contact with the second metal member and the auxiliary member, or the first metal member, the second metal member and the auxiliary member. In comparison, the load on the friction stirrer can be reduced. Moreover, since only the stirring pin is inserted, the width of the plasticized region can be reduced. Thereby, since the plate | board thickness of a 1st metal member can also be made small, the freedom degree of design can be raised. In addition to the first metal member and the second metal member, the auxiliary member can also be friction stir welded to prevent metal shortage at the joint. Furthermore, since the end surface of the first metal member is inserted into the groove of the second metal member and the end surface is abutted against the bottom surface of the groove, misalignment between the first metal member and the second metal member is prevented during the abutting process. be able to.

また、バリが形成された前記補助部材を前記第二金属部材から除去する除去工程を含むことが好ましい。かかる接合方法によれば、バリを補助部材ごと容易に除去することができる。   Moreover, it is preferable to include the removal process which removes the said auxiliary member in which the burr | flash was formed from said 2nd metal member. According to this joining method, the burr can be easily removed together with the auxiliary member.

また、前記摩擦攪拌工程では、前記補助部材の中央部に前記攪拌ピンを挿入することが好ましい。かかる接合方法によれば、補助部材に回転ツールを容易に挿入することができる。   In the friction stirring step, it is preferable that the stirring pin is inserted in the central portion of the auxiliary member. According to this joining method, the rotating tool can be easily inserted into the auxiliary member.

また、前記回転ツールの回転中心軸が通る位置を接合基準線と設定した場合、前記配置工程では、前記接合基準線に対して一方側にのみ前記補助部材を配置し、前記摩擦攪拌工程では、前記補助部材に前記バリが発生するように接合条件を設定することが好ましい。   Further, when the position through which the rotation center axis of the rotary tool passes is set as a joining reference line, in the placement step, the auxiliary member is placed only on one side with respect to the joining reference line, and in the friction stirring step, It is preferable to set a joining condition so that the burr is generated in the auxiliary member.

かかる接合方法によれば、接合基準線に対して一方側のみに配置された補助部材にバリを集約させることができるため、バリをより容易に除去することができる。   According to such a joining method, since the burrs can be concentrated on the auxiliary member disposed only on one side with respect to the joining reference line, the burrs can be more easily removed.

また、前記回転ツールの回転中心軸が通る位置を接合基準線と設定した場合、前記配置工程及び前記摩擦攪拌工程では、前記接合基準線を跨ぐように前記補助部材を配置するとともに、前記接合基準線に対して一方側の前記補助部材に前記バリを発生させ、かつ、前記摩擦攪拌工程後に他方側に前記補助部材が残存しないように補助部材の配置位置及び接合条件を設定することが好ましい。   Further, when the position through which the rotation center axis of the rotary tool passes is set as a joining reference line, in the placement step and the friction stirring step, the auxiliary member is placed across the joining reference line, and the joining reference It is preferable that the burr is generated in the auxiliary member on one side with respect to the line, and the arrangement position and joining conditions of the auxiliary member are set so that the auxiliary member does not remain on the other side after the friction stirring step.

かかる接合方法によれば、接合部の金属不足をバランスよく防ぐことができる。また、摩擦攪拌工程後は、一方側にのみ残存した補助部材をバリとともに除去することで、バリをより容易に除去することができる。   According to such a joining method, metal shortage at the joint can be prevented in a well-balanced manner. Further, after the friction stirring step, the auxiliary member remaining only on one side is removed together with the burr, so that the burr can be more easily removed.

また、このような課題を解決するために本発明は、攪拌ピンを備えた回転ツールを用いて第一金属部材と第二金属部材と第三金属部材とを接合する接合方法であって、板状を呈し裏面側の角部を切り欠いた前記第二金属部材の端面と板状を呈し裏面側の角部を切り欠いた前記第三金属部材の端面とを突き合わせて凹溝及び第一突合せ部を形成するとともに、前記凹溝に板状の前記第一金属部材の端面を挿入して端面を前記凹溝の底面に突き合わせて第二突合せ部を形成する突合せ工程と、前記第二金属部材と前記第三金属部材の表面のうち前記第一金属部材に対応する位置に補助部材を配置する配置工程と、前記補助部材の表面側から前記回転ツールの前記攪拌ピンを挿入し、前記回転ツールを前記凹溝に沿って相対移動させて、前記第一突合せ部及び前記第二突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含み、前記摩擦攪拌工程において、前記攪拌ピンのみを前記第二金属部材、前記第三金属部材及び前記補助部材、又は前記第二金属部材、前記第三金属部材、前記第一金属部材及び前記補助部材に接触させた状態で、前記第一突合せ部及び前記第二突合せ部を摩擦攪拌接合することを特徴とする。   Moreover, in order to solve such a problem, the present invention is a joining method for joining a first metal member, a second metal member, and a third metal member using a rotary tool equipped with a stirring pin, The end surface of the second metal member that has a shape and has a corner on the back side cut out, and the end surface of the third metal member that has a plate shape and has a corner on the back side cut out to form a groove and a first butt A step of forming a second abutting portion by forming a second abutting portion by inserting an end surface of the plate-like first metal member into the concave groove and abutting the end surface against the bottom surface of the concave groove; And arranging the auxiliary member at a position corresponding to the first metal member among the surfaces of the third metal member, and inserting the stirring pin of the rotary tool from the surface side of the auxiliary member, Relative movement along the concave groove, A friction stir step for friction stir welding the settling portion and the second butting portion, and in the friction stir step, only the stir pin is connected to the second metal member, the third metal member and the auxiliary member, or the The first butted portion and the second butted portion are friction stir welded in contact with the second metal member, the third metal member, the first metal member, and the auxiliary member.

かかる接合方法によれば、攪拌ピンのみを、第二金属部材、第三金属部材及び補助部材、又は、第二金属部材、第三金属部材、第一金属部材及び補助部材に接触させた状態で摩擦攪拌接合を行うため、従来技術に比べて摩擦攪拌装置にかかる負荷を軽減することができる。また、攪拌ピンのみを挿入するため、塑性化領域の幅を小さくすることができる。これにより、第一金属部材の板厚も小さくすることができるため、設計の自由度を高めることができる。また、第一金属部材、第二金属部材及び第三金属部材に加えて、補助部材も摩擦攪拌接合することにより、接合部の金属不足を防ぐことができる。さらに、第二金属部材と第三金属部材を突き合わせて形成される凹溝に第一金属部材の端面を挿入して当該端面を凹溝の底面に突き合わせるため、突合せ工程時に第一金属部材と第二金属部材と第三金属部材との位置ずれを防ぐことができる。   According to this joining method, only the stirring pin is in contact with the second metal member, the third metal member and the auxiliary member, or the second metal member, the third metal member, the first metal member and the auxiliary member. Since the friction stir welding is performed, the load applied to the friction stirrer can be reduced as compared with the prior art. Moreover, since only the stirring pin is inserted, the width of the plasticized region can be reduced. Thereby, since the plate | board thickness of a 1st metal member can also be made small, the freedom degree of design can be raised. In addition to the first metal member, the second metal member, and the third metal member, the auxiliary member can also be friction stir welded to prevent a metal shortage at the joint. Further, the end surface of the first metal member is inserted into the groove formed by abutting the second metal member and the third metal member and the end surface is abutted against the bottom surface of the groove, Position shift between the second metal member and the third metal member can be prevented.

また、バリが形成された前記補助部材を前記第二金属部材及び前記第三金属部材から除去する除去工程を含むことが好ましい。かかる接合方法によれば、バリを補助部材ごと容易に除去することができる。   Moreover, it is preferable to include the removal process which removes the said auxiliary member in which the burr | flash was formed from said 2nd metal member and said 3rd metal member. According to this joining method, the burr can be easily removed together with the auxiliary member.

また、前記摩擦攪拌工程では、前記補助部材の中央部に前記攪拌ピンを挿入することが好ましい。かかる接合方法によれば、補助部材に回転ツールを容易に挿入することができる。   In the friction stirring step, it is preferable that the stirring pin is inserted in the central portion of the auxiliary member. According to this joining method, the rotating tool can be easily inserted into the auxiliary member.

また、前記配置工程では、前記第一突合せ部に対して一方側にのみ前記補助部材を配置し、前記摩擦攪拌工程では、前記補助部材に前記バリが発生するように接合条件を設定することが好ましい。   Further, in the arranging step, the auxiliary member is arranged only on one side with respect to the first butting portion, and in the friction stirring step, a joining condition is set so that the burr is generated in the auxiliary member. preferable.

かかる接合方法によれば、第一突合せ部に対して一方側のみに配置された補助部材にバリを集約させることができるため、バリをより容易に除去することができる。   According to such a joining method, since the burrs can be concentrated on the auxiliary member disposed only on one side with respect to the first butting portion, the burrs can be more easily removed.

また、前記配置工程及び前記摩擦攪拌工程では、前記第一突合せ部を跨ぐように前記補助部材を配置するとともに、前記第一突合せ部に対して一方側の前記補助部材に前記バリを発生させ、かつ、前記摩擦攪拌工程後に他方側に前記補助部材が残存しないように補助部材の配置位置及び接合条件を設定することが好ましい。   Moreover, in the arrangement step and the friction stirring step, the auxiliary member is arranged so as to straddle the first abutting portion, and the burr is generated in the auxiliary member on one side with respect to the first abutting portion, And it is preferable to set the arrangement | positioning position and joining conditions of an auxiliary member so that the said auxiliary member may not remain on the other side after the said friction stirring process.

かかる接合方法によれば、接合部の金属不足をバランスよく防ぐことができる。また、摩擦攪拌工程後は、一方側にのみ残存した補助部材をバリとともに除去することで、バリをより容易に除去することができる。   According to such a joining method, metal shortage at the joint can be prevented in a well-balanced manner. Further, after the friction stirring step, the auxiliary member remaining only on one side is removed together with the burr, so that the burr can be more easily removed.

本発明に係る接合方法によれば、摩擦攪拌装置にかかる負荷を小さくすることができるとともに、設計の自由度を高めることができる。   According to the joining method according to the present invention, the load applied to the friction stirrer can be reduced and the degree of freedom in design can be increased.

本発明の第一実施形態に係る接合方法の突合せ工程及び配置工程を示す斜視図である。It is a perspective view which shows the butt | matching process and arrangement | positioning process of the joining method which concern on 1st embodiment of this invention. 第一実施形態に係る接合方法の摩擦攪拌工程を示す断面図である。It is sectional drawing which shows the friction stirring process of the joining method which concerns on 1st embodiment. 第一実施形態に係る接合方法の除去工程を示す断面図である。It is sectional drawing which shows the removal process of the joining method which concerns on 1st embodiment. 第一実施形態に係る接合方法の除去工程後を示す断面図である。It is sectional drawing which shows after the removal process of the joining method which concerns on 1st embodiment. 第二実施形態に係る接合方法の突合せ工程及び配置工程を示す断面図である。It is sectional drawing which shows the butt | matching process and arrangement | positioning process of the joining method which concern on 2nd embodiment. 第二実施形態に係る接合方法の摩擦攪拌工程を示す断面図である。It is sectional drawing which shows the friction stirring process of the joining method which concerns on 2nd embodiment. 第二実施形態に係る接合方法の除去工程を示す断面図である。It is sectional drawing which shows the removal process of the joining method which concerns on 2nd embodiment. 第三実施形態に係る接合方法の突合せ工程及び配置工程を示す断面図である。It is sectional drawing which shows the butt | matching process and arrangement | positioning process of the joining method which concern on 3rd embodiment. 第三実施形態に係る接合方法の摩擦攪拌工程を示す断面図である。It is sectional drawing which shows the friction stirring process of the joining method which concerns on 3rd embodiment. 第三実施形態に係る接合方法の除去工程を示す断面図である。It is sectional drawing which shows the removal process of the joining method which concerns on 3rd embodiment. 第四実施形態に係る接合方法の突合せ工程及び配置工程を示す断面図である。It is sectional drawing which shows the butt | matching process and arrangement | positioning process of the joining method which concern on 4th embodiment. 第四実施形態に係る接合方法の摩擦攪拌工程を示す断面図である。It is sectional drawing which shows the friction stirring process of the joining method which concerns on 4th embodiment. 第四実施形態に係る接合方法の除去工程を示す断面図である。It is sectional drawing which shows the removal process of the joining method which concerns on 4th embodiment. 第四実施形態に係る接合方法の除去工程後を示す断面図である。It is sectional drawing which shows after the removal process of the joining method which concerns on 4th embodiment. 第五実施形態に係る接合方法の突合せ工程及び配置工程を示す断面図である。It is sectional drawing which shows the butt | matching process and arrangement | positioning process of the joining method which concern on 5th embodiment. 第六実施形態に係る接合方法の突合せ工程及び配置工程を示す断面図である。It is sectional drawing which shows the butt | matching process and arrangement | positioning process of the joining method which concern on 6th embodiment.

[第一実施形態]
本発明の第一実施形態に係る接合方法について図面を参照して詳細に説明する。図1に示すように、本実施形態に係る接合方法では、第一金属部材1と第二金属部材2とを正面視T字状に突合せて摩擦攪拌により接合する。本実施形態に係る接合方法では、突合せ工程と、配置工程と、摩擦攪拌工程と、除去工程とを行う。なお、説明における「表面」とは、「裏面」の反対側の面を意味する。
[First embodiment]
A joining method according to a first embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, in the joining method according to the present embodiment, the first metal member 1 and the second metal member 2 are butted in a T shape in front view and joined by friction stirring. In the joining method according to the present embodiment, a butt process, an arrangement process, a friction stirring process, and a removal process are performed. The “front surface” in the description means a surface opposite to the “back surface”.

第一金属部材1及び第二金属部材2は、いずれも板状を呈する。第一金属部材1及び第二金属部材2は、アルミニウム、アルミニウム合金、銅、銅合金、チタン、チタン合金、 マグネシウム、マグネシウム合金等の摩擦攪拌可能な金属から適宜選択される。第一金属部材1及び第二金属部材2の板厚寸法は適宜設定すればよい。第二金属部材2の裏面2cには、第一金属部材1側に開口する凹溝2dが形成されている。凹溝2dは、第一金属部材1の形状に対応する断面矩形状を呈する。凹溝2dの溝幅は、本実施形態では第一金属部材1の板厚と同等に形成されている。凹溝2dは、第一金属部材1の一端縁を嵌合可能に形成されている。   Both the first metal member 1 and the second metal member 2 have a plate shape. The first metal member 1 and the second metal member 2 are appropriately selected from metals capable of friction stirring such as aluminum, aluminum alloy, copper, copper alloy, titanium, titanium alloy, magnesium, magnesium alloy and the like. The plate thickness dimensions of the first metal member 1 and the second metal member 2 may be set as appropriate. On the back surface 2 c of the second metal member 2, a concave groove 2 d that opens to the first metal member 1 side is formed. The concave groove 2 d has a rectangular cross section corresponding to the shape of the first metal member 1. The groove width of the recessed groove 2d is formed to be equal to the plate thickness of the first metal member 1 in this embodiment. The ditch | groove 2d is formed so that the one end edge of the 1st metal member 1 can be fitted.

突合せ工程は、図1に示すように、第二金属部材2の凹溝2dに第一金属部材1の端面1aを挿入して当該端面1aを凹溝2dの底面2eに突き合わせて突合せ部J1を形成する工程である。本実施形態に係る突合せ工程では、凹溝2dの溝幅が第一金属部材1の板厚と同等に形成されているため、第一金属部材1の板厚方向の側面1b,1cと凹溝2dの溝幅方向の側面2f,2gとがそれぞれ当接し、第一金属部材1の一端縁が凹溝2dに嵌合する。   As shown in FIG. 1, the butting step is performed by inserting the end surface 1a of the first metal member 1 into the groove 2d of the second metal member 2 and butting the end surface 1a against the bottom surface 2e of the groove 2d. It is a process of forming. In the butting process according to the present embodiment, the groove width of the concave groove 2d is formed to be equal to the plate thickness of the first metal member 1, and therefore the side surfaces 1b and 1c in the plate thickness direction of the first metal member 1 and the concave groove The side surfaces 2f and 2g of 2d in the groove width direction are in contact with each other, and one end edge of the first metal member 1 is fitted into the groove 2d.

配置工程は、図1に示すように、補助部材10を配置する工程である。補助部材10は、板状の金属部材である。補助部材10の板厚は、後記する摩擦攪拌工程の際に形成される接合部(塑性化領域W1)に金属不足が発生しない程度の厚さに設定する。補助部材10は、本実施形態では、第一金属部材1及び第二金属部材2と同じ材料で形成されている。配置工程では、第二金属部材2の表面2bにおいて、第一金属部材1及び凹溝2dと対応する位置に補助部材10を配置する。第二金属部材2の表面2bと補助部材10の裏面10bとは面接触する。本実施形態に係る配置工程では、補助部材10の中央部と第一金属部材1の板厚方向の中心とが概ね重なる位置に配置する。   An arrangement | positioning process is a process of arrange | positioning the auxiliary member 10, as shown in FIG. The auxiliary member 10 is a plate-shaped metal member. The plate | board thickness of the auxiliary member 10 is set to the thickness which does not generate | occur | produce a metal shortage in the junction part (plasticization area | region W1) formed in the case of the friction stirring process mentioned later. In this embodiment, the auxiliary member 10 is formed of the same material as the first metal member 1 and the second metal member 2. In the arrangement step, the auxiliary member 10 is arranged on the surface 2b of the second metal member 2 at a position corresponding to the first metal member 1 and the concave groove 2d. The surface 2b of the second metal member 2 and the back surface 10b of the auxiliary member 10 are in surface contact. In the arrangement | positioning process which concerns on this embodiment, it arrange | positions in the position with which the center part of the auxiliary member 10 and the center of the plate | board thickness direction of the 1st metal member 1 substantially overlap.

摩擦攪拌工程は、図2に示すように、補助部材10の表面10a側から回転する接合用回転ツールFを挿入し、突合せ部J1を摩擦攪拌接合する工程である。接合用回転ツールFは、特許請求の範囲の「回転ツール」に相当する。接合用回転ツールFは、連結部F1と、攪拌ピンF2とで構成されている。連結部F1は、図示しない摩擦攪拌装置に取り付けられる部位であって、円柱状を呈する。   As shown in FIG. 2, the friction stirring step is a step of inserting the joining rotary tool F that rotates from the surface 10 a side of the auxiliary member 10 and friction-stir-joining the butt J1. The joining rotary tool F corresponds to a “rotary tool” in the claims. The joining rotary tool F includes a connecting portion F1 and a stirring pin F2. The connection part F1 is a part attached to a friction stirrer (not shown) and has a cylindrical shape.

攪拌ピンF2は、連結部F1から垂下しており、連結部F1と同軸になっている。攪拌ピンF2は連結部F1から離間するにつれて先細りになっている。攪拌ピンF2の外周面には螺旋溝が刻設されている。本実施形態では、接合用回転ツールFを右回転させるため、螺旋溝は、基端から先端に向かうにつれて左回りに形成されている。   The stirring pin F2 hangs down from the connecting portion F1 and is coaxial with the connecting portion F1. The stirring pin F2 is tapered as it is separated from the connecting portion F1. A spiral groove is formed on the outer peripheral surface of the stirring pin F2. In the present embodiment, the spiral groove is formed in a counterclockwise direction from the proximal end toward the distal end in order to rotate the joining rotary tool F to the right.

なお、接合用回転ツールFを左回転させる場合は、螺旋溝を基端から先端に向かうにつれて右回りに形成することが好ましい。螺旋溝をこのように設定することで、摩擦攪拌の際に塑性流動化した金属が螺旋溝によって攪拌ピンF2の先端側に導かれる。これにより、被接合金属部材(第一金属部材1、第二金属部材2及び補助部材10)の外部に溢れ出る金属の量を少なくすることができる。   In addition, when rotating the rotation tool F for joining counterclockwise, it is preferable to form a spiral groove clockwise as it goes to a front-end | tip from a base end. By setting the spiral groove in this way, the metal plastically fluidized during friction stirring is guided to the tip side of the stirring pin F2 by the spiral groove. Thereby, the quantity of the metal which overflows outside the to-be-joined metal member (the 1st metal member 1, the 2nd metal member 2, and the auxiliary member 10) can be decreased.

摩擦攪拌工程では、補助部材10の表面10aから右回転させた攪拌ピンF2を挿入する。摩擦攪拌工程では、攪拌ピンF2と第一金属部材1、第二金属部材2及び補助部材10を接触させた状態で、図2の手前側から奥側に向けて突合せ部J1に沿って接合用回転ツールFを相対移動させる。また、摩擦攪拌工程では、攪拌ピンF2の基端側は露出させた状態で摩擦攪拌を行う。接合用回転ツールFの回転中心軸Cは、第一金属部材1の板厚方向の中心と凹溝2dの溝幅方向の中心とを通る位置に設定している。接合用回転ツールFの移動軌跡には、塑性化領域W1が形成される。攪拌ピンF2の挿入深さは適宜設定すればよいが、本実施形態では、攪拌ピンF2が第一金属部材1と接触するように設定している。   In the friction stirring step, the stirring pin F2 rotated right from the surface 10a of the auxiliary member 10 is inserted. In the friction agitation step, the agitation pin F2 and the first metal member 1, the second metal member 2 and the auxiliary member 10 are in contact with each other along the abutting portion J1 from the near side to the far side in FIG. The rotation tool F is moved relatively. In the friction stirring step, friction stirring is performed with the base end side of the stirring pin F2 exposed. The rotation center axis C of the joining rotary tool F is set to a position passing through the center of the first metal member 1 in the plate thickness direction and the center of the groove 2d in the groove width direction. A plasticized region W1 is formed in the movement locus of the welding rotary tool F. The insertion depth of the stirring pin F <b> 2 may be set as appropriate, but in the present embodiment, the stirring pin F <b> 2 is set so as to contact the first metal member 1.

なお、摩擦攪拌工程では、攪拌ピンF2のみを第二金属部材2及び補助部材10のみに接触させて摩擦攪拌接合を行ってもよい。この場合は、第二金属部材2と攪拌ピンF2との摩擦熱によって突合せ部J1が塑性流動化して接合される。補助部材10の表面10aにはバリVが形成される。   In the friction stirring step, only the stirring pin F2 may be brought into contact with the second metal member 2 and the auxiliary member 10 to perform the friction stirring joining. In this case, the butt portion J1 is plastically fluidized and joined by frictional heat between the second metal member 2 and the stirring pin F2. A burr V is formed on the surface 10 a of the auxiliary member 10.

除去工程は、図3に示すように、第二金属部材2から補助部材10を除去する工程である。除去工程では、補助部材10の両端をめくり上げつつ、凹溝Dを境に折り曲げるようにして切除する。凹溝Dは、塑性化領域W1のうち深くえぐれている部位である。除去工程は、切削工具等を用いてよいが、本実施形態では手作業で除去している。以上の工程により、第一金属部材1と第二金属部材2とが正面視T字状に接合される。   The removal step is a step of removing the auxiliary member 10 from the second metal member 2 as shown in FIG. In the removal process, the both ends of the auxiliary member 10 are turned up, and the auxiliary member 10 is cut off so as to be bent at the groove D. The concave groove D is a portion that is deeply buried in the plasticized region W1. In the removal process, a cutting tool or the like may be used, but in this embodiment, the removal process is performed manually. Through the above steps, the first metal member 1 and the second metal member 2 are joined in a T-shape when viewed from the front.

以上説明した本実施形態に係る接合方法によれば、攪拌ピンF2のみを、第一金属部材1、第二金属部材2及び補助部材10、又は、第二金属部材2及び補助部材10に接触させた状態で摩擦攪拌接合を行うため、従来技術に比べて摩擦攪拌装置にかかる負荷を軽減することができる。これにより、第二金属部材2の板厚が大きい場合であっても、摩擦攪拌装置に大きな負荷がかからない状態で深い位置にある突合せ部J1を接合することができる。   According to the joining method according to the present embodiment described above, only the stirring pin F2 is brought into contact with the first metal member 1, the second metal member 2, and the auxiliary member 10, or the second metal member 2 and the auxiliary member 10. Since the friction stir welding is performed in the above state, the load on the friction stirrer can be reduced as compared with the prior art. Thereby, even if the plate | board thickness of the 2nd metal member 2 is large, the butt | matching part J1 in a deep position can be joined in the state which does not apply a big load to a friction stirring apparatus.

また、攪拌ピンF2のみを挿入するため、塑性化領域W1の幅を小さくすることができる。これにより、第一金属部材1の板厚も小さくすることができるため、第一金属部材1の設計の自由度を高めることができる。また、第一金属部材1及び第二金属部材2に加えて、補助部材10も摩擦攪拌接合することにより、図4に示すように接合部(塑性化領域W1)の金属不足を防ぐことができる。   Moreover, since only the stirring pin F2 is inserted, the width of the plasticizing region W1 can be reduced. Thereby, since the plate | board thickness of the 1st metal member 1 can also be made small, the freedom degree of design of the 1st metal member 1 can be raised. Moreover, in addition to the 1st metal member 1 and the 2nd metal member 2, the auxiliary member 10 is also friction stir welded, and as shown in FIG. 4, the metal shortage of a junction part (plasticization area | region W1) can be prevented. .

さらに、第二金属部材2の凹溝2dに第一金属部材1の端面1aを挿入して当該端面1aを凹溝2dの底面2eに突き合わせるため、突合せ工程時に第一金属部材1と第二金属部材2との位置ずれを防ぐことができる。   Furthermore, since the end surface 1a of the first metal member 1 is inserted into the concave groove 2d of the second metal member 2 and the end surface 1a is abutted against the bottom surface 2e of the concave groove 2d, the first metal member 1 and the second metal member 1 are in contact with each other during the abutting process. It is possible to prevent displacement from the metal member 2.

また、除去工程によれば、補助部材10ごとバリVを除去することができるため、別途バリを除去する作業を行わなくても第二金属部材2の表面2bをきれいに仕上げることができる。また、本実施形態の摩擦攪拌工程では、補助部材10の表面10aの中央部から接合用回転ツールFを挿入するため、接合用回転ツールFの挿入作業を容易に行うことができる。   Further, according to the removing step, since the burr V can be removed together with the auxiliary member 10, the surface 2b of the second metal member 2 can be finished finely without performing a separate burr removing operation. Moreover, in the friction stirring process of this embodiment, since the joining rotary tool F is inserted from the center of the surface 10a of the auxiliary member 10, the joining rotary tool F can be inserted easily.

[第二実施形態]
次に、本発明の第二実施形態に係る接合方法について説明する。第二実施形態に係る接合方法では、突合せ工程と、配置工程と、摩擦攪拌工程と、除去工程とを行う。第二実施形態に係る接合方法は、補助部材10の配置位置が第一実施形態と相違する。第二実施形態に係る接合方法では、第一実施形態と相違する部分を中心に説明する。
[Second Embodiment]
Next, the joining method according to the second embodiment of the present invention will be described. In the joining method according to the second embodiment, a butting process, an arranging process, a friction stirring process, and a removing process are performed. The joining method according to the second embodiment is different from the first embodiment in the arrangement position of the auxiliary member 10. The joining method according to the second embodiment will be described with a focus on the differences from the first embodiment.

突合せ工程では、図5に示すように、第一実施形態と同様に第二金属部材2の凹溝2dに第一金属部材1の端面1aを挿入して当該端面1aを凹溝2dの底面2eに突き合わせて突合せ部J1を形成する。   In the butting step, as shown in FIG. 5, the end surface 1a of the first metal member 1 is inserted into the groove 2d of the second metal member 2 as in the first embodiment, and the end surface 1a is used as the bottom surface 2e of the groove 2d. Butt portion J1 is formed.

ここで、図5に示すように、摩擦攪拌工程の際に、接合用回転ツールFの回転中心軸C(図6参照)が通る予定位置を「接合基準線X」と設定する。接合基準線Xは、本実施形態では第一金属部材1の板厚方向の中心と凹溝2dの溝幅方向の中心と重なるように設定している。配置工程では、補助部材10を接合基準線Xに対して一方側のみの第二金属部材2の表面2bに配置しつつ、補助部材10の側面10cが、接合基準線Xと重なる位置に補助部材10を配置する。なお、接合基準線Xは、後記する摩擦攪拌工程の際に、第一金属部材1の側面1b,1cと第二金属部材2の裏面2cとの各内隅から塑性流動材が流出しない位置で適宜設定すればよい。   Here, as shown in FIG. 5, the planned position through which the rotation center axis C (see FIG. 6) of the welding rotary tool F passes is set as a “joining reference line X” in the friction stirring step. In this embodiment, the joining reference line X is set so as to overlap the center of the first metal member 1 in the plate thickness direction and the center of the groove 2d in the groove width direction. In the arranging step, the auxiliary member 10 is arranged on the surface 2b of the second metal member 2 only on one side with respect to the bonding reference line X, and the auxiliary member 10 is positioned at a position where the side surface 10c of the auxiliary member 10 overlaps the bonding reference line X. 10 is arranged. Note that the joining reference line X is a position where the plastic fluid material does not flow out from the inner corners of the side surfaces 1b, 1c of the first metal member 1 and the back surface 2c of the second metal member 2 in the friction stirring step described later. What is necessary is just to set suitably.

摩擦攪拌工程は、図6に示すように、右回転させた接合用回転ツールFの回転中心軸Cを接合基準線Xと重なる位置に挿入し、図6の手前側から奥側に向けて接合用回転ツールFを相対移動させて突合せ部J1を摩擦攪拌接合する工程である。摩擦攪拌工程では、第一実施形態と同様に、接合用回転ツールFの攪拌ピンF2のみを第一金属部材1、第二金属部材2及び補助部材10に接触させるか、又は、第二金属部材2及び補助部材10に接触させた状態で摩擦攪拌接合を行う。   As shown in FIG. 6, in the friction stirring step, the rotation center axis C of the rotating tool F for rotation rotated to the right is inserted at a position overlapping the welding reference line X, and the welding is performed from the near side to the far side in FIG. In this step, the rotary tool F is relatively moved and the butt J1 is friction stir welded. In the friction stirring step, as in the first embodiment, only the stirring pin F2 of the welding rotary tool F is brought into contact with the first metal member 1, the second metal member 2, and the auxiliary member 10, or the second metal member. Friction stir welding is performed in a state of contact with 2 and the auxiliary member 10.

本実施形態では、接合用回転ツールFのシアー側(advancing side:回転ツールの外周における接線速度に回転ツールの移動速度が加算される側)が第二金属部材2のうち補助部材10が配置されていない側となるように接合用回転ツールFの移動方向と回転方向を設定している。接合用回転ツールFの回転方向及び進行方向は前記したものに限定されるものではなく適宜設定すればよい。   In the present embodiment, the auxiliary member 10 of the second metal member 2 is arranged on the shearing side (advancing side: the side on which the moving speed of the rotating tool is added to the tangential speed on the outer periphery of the rotating tool). The moving direction and the rotating direction of the welding rotary tool F are set so as to be on the non-connecting side. The rotation direction and the traveling direction of the joining rotary tool F are not limited to those described above, and may be set as appropriate.

例えば、接合用回転ツールFの回転速度が遅い場合では、フロー側(retreating side:回転ツールの外周における接線速度から回転ツールの移動速度が減算される側)に比べてシアー側の方が塑性流動材の温度が上昇しやすくなるため、塑性化領域W1外のシアー側にバリVが多く発生する傾向にある。一方、例えば、接合用回転ツールFの回転速度が速い場合、シアー側の方が塑性流動材の温度が上昇するものの、回転速度が速い分、塑性化領域W1外のフロー側にバリVが多く発生する傾向にある。   For example, when the rotational speed of the welding rotary tool F is low, the shear side is more plastic flow than the flow side (retreating side: the side where the moving speed of the rotary tool is subtracted from the tangential speed on the outer periphery of the rotary tool). Since the temperature of the material is likely to rise, many burrs V tend to be generated on the shear side outside the plasticized region W1. On the other hand, for example, when the rotational speed of the rotating tool F for joining is high, the temperature of the plastic fluidized material increases on the shear side, but there are more burrs V on the flow side outside the plasticizing region W1 due to the higher rotational speed. Tend to occur.

本実施形態では、接合用回転ツールFの回転速度を速く設定しているため、図7にも示すように、塑性化領域W1外のフロー側にバリVが多く発生する傾向にある。また、接合用回転ツールFの回転速度を速く設定することにより、接合用回転ツールFの移動速度(送り速度)を高めることができる。これにより、接合サイクルを短くすることができる。   In the present embodiment, since the rotational speed of the joining rotary tool F is set high, as shown in FIG. 7, many burrs V tend to be generated on the flow side outside the plasticizing region W1. Moreover, the moving speed (feeding speed) of the joining rotary tool F can be increased by setting the rotational speed of the joining rotary tool F faster. Thereby, a joining cycle can be shortened.

摩擦攪拌工程の際に、接合用回転ツールFの進行方向のどちら側にバリVが発生するかは接合条件によって異なる。当該接合条件とは、接合用回転ツールFの回転速度、回転方向、進行方向、移動速度(送り速度)、攪拌ピンF2の傾斜角度(テーパー角度)、被接合金属部材(第一金属部材1、第二金属部材2及び補助部材10)の材質、被接合金属部材の厚さ等の各要素とこれらの要素の組合せで決定される。接合条件に応じて、バリVが発生する側又はバリVが多く発生する側が補助部材10側となるように設定すれば、後記する除去工程を容易に行うことができるため好ましい。   In the friction stirring step, which side of the traveling direction of the welding rotary tool F the burr V is generated differs depending on the joining conditions. The joining conditions include the rotational speed, the rotational direction, the traveling direction, the moving speed (feeding speed) of the joining rotary tool F, the inclination angle (taper angle) of the stirring pin F2, the metal member to be joined (first metal member 1, It is determined by each element such as the material of the second metal member 2 and the auxiliary member 10), the thickness of the metal member to be joined, and the combination of these elements. It is preferable to set the side where the burrs V are generated or the side where a large amount of burrs V is generated to be the auxiliary member 10 side according to the joining conditions because the removal step described later can be easily performed.

除去工程は、第二金属部材2から補助部材10を除去する工程である。除去工程では、第一実施形態と同様に、補助部材10を折り曲げるようにして除去する。以上の工程により、第一金属部材1と第二金属部材2とが接合される。   The removing step is a step of removing the auxiliary member 10 from the second metal member 2. In the removal step, the auxiliary member 10 is removed by being bent as in the first embodiment. Through the above steps, the first metal member 1 and the second metal member 2 are joined.

以上説明した第二実施形態に係る接合方法によっても第一実施形態と略同等の効果を奏することができる。また、第二実施形態に係る配置工程では補助部材10を接合基準線Xに対して一方側に配置し、摩擦攪拌工程では補助部材10側にバリVが発生するように接合条件を設定した。これにより、接合基準線Xに対して一方側に配置された補助部材10にバリVを集約することができる。これにより、バリVを補助部材10ごと除去できるため、バリVを容易に除去することができる。   The bonding method according to the second embodiment described above can provide substantially the same effect as that of the first embodiment. Further, in the arrangement process according to the second embodiment, the auxiliary member 10 is arranged on one side with respect to the joining reference line X, and in the friction stirring process, the joining conditions are set so that burrs V are generated on the auxiliary member 10 side. Thereby, the burr | flash V can be concentrated on the auxiliary member 10 arrange | positioned with respect to the joining reference line X at one side. Thereby, since the burr | flash V can be removed with the auxiliary member 10, the burr | flash V can be removed easily.

[第三実施形態]
次に、本発明の第三実施形態に係る接合方法について説明する。第三実施形態に係る接合方法では、突合せ工程と、配置工程と、摩擦攪拌工程と、除去工程とを行う。第三実施形態に係る接合方法では、第一実施形態と相違する部分を中心に説明する。
[Third embodiment]
Next, the joining method according to the third embodiment of the present invention will be described. In the joining method according to the third embodiment, a butt process, an arrangement process, a friction stirring process, and a removal process are performed. The joining method according to the third embodiment will be described with a focus on the differences from the first embodiment.

突合せ工程では、図8に示すように、第一実施形態と同様に第二金属部材2の凹溝2dに第一金属部材1の端面1aを挿入して当該端面1aを凹溝2dの底面2eに突き合わせて突合せ部J1を形成する。本実施形態でも、接合基準線Xは第一金属部材1の板厚方向の中心と凹溝2dの溝幅方向の中心と重なる位置に設定している。配置工程では、補助部材10を接合基準線Xに対して他方側の第二金属部材2の表面2bに配置しつつ、補助部材10の側面10cが接合基準線Xに対して一方側にわずかに突出するように補助部材10を配置する。補助部材10の厚さ及び接合基準線Xから側面10cまでの距離は、後記する摩擦攪拌工程において、接合部(塑性化領域W1)に金属不足が発生せず、かつ、摩擦攪拌工程後に一方側に補助部材10が残存しないように適宜設定する。   In the butting step, as shown in FIG. 8, the end surface 1a of the first metal member 1 is inserted into the groove 2d of the second metal member 2 as in the first embodiment, and the end surface 1a is used as the bottom surface 2e of the groove 2d. Butt portion J1 is formed. Also in this embodiment, the joining reference line X is set at a position where it overlaps the center of the first metal member 1 in the plate thickness direction and the center of the groove 2d in the groove width direction. In the arranging step, the auxiliary member 10 is arranged on the surface 2b of the second metal member 2 on the other side with respect to the joining reference line X, while the side surface 10c of the auxiliary member 10 is slightly on one side with respect to the joining reference line X. The auxiliary member 10 is disposed so as to protrude. The thickness of the auxiliary member 10 and the distance from the joining reference line X to the side surface 10c are such that a metal shortage does not occur in the joining portion (plasticization region W1) in the friction stirring process described later, and one side after the friction stirring process. The auxiliary member 10 is appropriately set so as not to remain.

摩擦攪拌工程では、図9に示すように、左回転させた接合用回転ツールFの回転中心軸Cを接合基準線Xと重なる位置に挿入し、図9の手前側から奥側に向けて接合用回転ツールFを相対移動させて突合せ部J1を摩擦攪拌接合する工程である。摩擦攪拌工程では、第一実施形態と同様に、接合用回転ツールFの攪拌ピンF2のみを第一金属部材1、第二金属部材2及び補助部材10に接触させるか、又は、第二金属部材2及び補助部材10に接触させた状態で摩擦攪拌接合を行う。   In the friction agitation process, as shown in FIG. 9, the rotation center axis C of the welding rotary tool F rotated counterclockwise is inserted at a position overlapping the joining reference line X, and joined from the near side to the far side in FIG. In this step, the rotary tool F is relatively moved and the butt J1 is friction stir welded. In the friction stirring step, as in the first embodiment, only the stirring pin F2 of the welding rotary tool F is brought into contact with the first metal member 1, the second metal member 2, and the auxiliary member 10, or the second metal member. Friction stir welding is performed in a state of contact with 2 and the auxiliary member 10.

本実施形態では、接合用回転ツールFを左回転させているため、補助部材10のフロー側にバリVが形成される傾向にある。   In the present embodiment, since the joining rotary tool F is rotated counterclockwise, the burrs V tend to be formed on the flow side of the auxiliary member 10.

除去工程では、図10に示すように、第二金属部材2から補助部材10を除去する工程である。除去工程では、補助部材10を折り曲げて第二金属部材2から補助部材10を除去する。   In the removal step, as shown in FIG. 10, the auxiliary member 10 is removed from the second metal member 2. In the removing step, the auxiliary member 10 is bent and the auxiliary member 10 is removed from the second metal member 2.

以上説明した第三実施形態に係る接合方法によれば、第一実施形態と略同等の効果を奏することができる。また、本実施形態によれば、配置工程において、接合基準線Xに対して他方側に補助部材10を配置しつつ、一方側に補助部材10の側面10cをわずかに突出させる。また、摩擦攪拌工程では、突合せ部J1を摩擦攪拌接合しつつ、第二金属部材2の表面2bの一方側に補助部材10及びバリVが残存せず、補助部材10側にバリVが発生するように接合条件を設定する。これにより、接合部(塑性化領域W1)の金属不足をバランスよく防ぐことができるとともに、他方側に配置された補助部材10にバリVを集約することができる。これにより、バリVを補助部材10ごと除去できるため、バリVを容易に除去することができる。   According to the joining method according to the third embodiment described above, it is possible to achieve substantially the same effect as that of the first embodiment. Further, according to the present embodiment, in the arranging step, the auxiliary member 10 is arranged on the other side with respect to the joining reference line X, and the side surface 10c of the auxiliary member 10 is slightly protruded on the one side. Further, in the friction stirring step, the auxiliary member 10 and the burr V do not remain on one side of the surface 2b of the second metal member 2 while the butt joint J1 is friction stir welded, and the burr V is generated on the auxiliary member 10 side. The joining conditions are set as follows. As a result, it is possible to prevent a shortage of metal in the joint portion (plasticization region W1) in a well-balanced manner and to collect the burrs V in the auxiliary member 10 disposed on the other side. Thereby, since the burr | flash V can be removed with the auxiliary member 10, the burr | flash V can be removed easily.

[第四実施形態]
次に、本発明の第四実施形態に係る接合方法について説明する。第四実施形態に係る接合方法では、突合せ工程と、配置工程と、摩擦攪拌工程と、除去工程とを行う。第四実施形態に係る接合方法は、第二金属部材3及び第三金属部材4によって凹溝5を形成する点が第一実施形態と相違する。第四実施形態に係る接合方法では、第一実施形態と相違する部分を中心に説明する。
[Fourth embodiment]
Next, the joining method according to the fourth embodiment of the present invention will be described. In the joining method according to the fourth embodiment, a butt process, an arrangement process, a friction stirring process, and a removal process are performed. The joining method according to the fourth embodiment is different from the first embodiment in that the groove 5 is formed by the second metal member 3 and the third metal member 4. The joining method according to the fourth embodiment will be described with a focus on the differences from the first embodiment.

図11に示すように、第一金属部材1、第二金属部材3及び第三金属部材4は、いずれも板状を呈する。第一金属部材1、第二金属部材3及び第三金属部材4は、アルミニウム、アルミニウム合金、銅、銅合金、チタン、チタン合金、 マグネシウム、マグネシウム合金等の摩擦攪拌可能な金属から適宜選択される。第一金属部材1、第二金属部材3及び第三金属部材4の板厚寸法は適宜設定すればよい。   As shown in FIG. 11, the first metal member 1, the second metal member 3, and the third metal member 4 are all plate-shaped. The first metal member 1, the second metal member 3, and the third metal member 4 are appropriately selected from friction stir metals such as aluminum, aluminum alloy, copper, copper alloy, titanium, titanium alloy, magnesium, and magnesium alloy. . The plate thickness dimensions of the first metal member 1, the second metal member 3, and the third metal member 4 may be set as appropriate.

第二金属部材3は、第三金属部材4に対面する端面3cと、端面3cに対して連続するとともに直交する方向に延在する表面3aと、端面3cに対して直交する方向に延在する裏面3bと、裏面3bと端面3cとで構成された角部を切り欠いて形成された第一切欠部3dと、を有している。第一切欠部3dは、第一金属部材1側及び第三金属部材4側に開口している。第一切欠部3dは、第一切欠底面3eと第一切欠側面3fとを有している。第一切欠底面3eは、端面3cに対して連続するとともに直交する方向に延在している。第一切欠側面3fは、第一切欠底面3eと裏面3bとの間に形成されるとともに、第一切欠底面3e及び裏面3bに対して直交する方向に延在している。   The second metal member 3 has an end surface 3c facing the third metal member 4, a surface 3a continuous with the end surface 3c and extending in a direction orthogonal to the end surface 3c, and extending in a direction orthogonal to the end surface 3c. It has a back surface 3b, and a first notch 3d formed by cutting out a corner formed by the back surface 3b and the end surface 3c. The third notches 3d are open on the first metal member 1 side and the third metal member 4 side. The first notch 3d has a first notch bottom 3e and a first notch side 3f. The first bottom surface 3e is continuous with the end surface 3c and extends in a direction orthogonal thereto. The first notch side surface 3f is formed between the first notch bottom surface 3e and the back surface 3b, and extends in a direction orthogonal to the first notch bottom surface 3e and the back surface 3b.

第三金属部材4は、端面3cに対面する端面4cと、端面4cに対して連続するとともに直交する方向に延在する表面4aと、端面4cに対して直交する方向に延在する裏面4bと、裏面4bと端面4cとで構成された角部を切り欠いて形成された第二切欠部4dと、を有している。第二切欠部4dは、第一金属部材1側及び第二金属部材3側に開口している。第二切欠部4dは、第二切欠底面4eと第二切欠側面4fとを有している。第二切欠底面4eは、端面4cに対して連続するとともに直交する方向に延在している。第二切欠側面4fは、第二切欠底面4eと裏面4bとの間に形成されるとともに、第二切欠底面4e及び裏面4bに対して直交する方向に延在している。第一切欠部3dと第二切欠部4dとは、接合基準線X(本実施形態では第一突合せ部J2の延長線)に対して線対称に形成されている。   The third metal member 4 includes an end surface 4c facing the end surface 3c, a surface 4a continuous with the end surface 4c and extending in a direction orthogonal to the end surface 4c, and a back surface 4b extending in a direction orthogonal to the end surface 4c. And a second cutout portion 4d formed by cutting out a corner portion formed by the back surface 4b and the end surface 4c. The 2nd notch part 4d is opened to the 1st metal member 1 side and the 2nd metal member 3 side. The second cutout portion 4d has a second cutout bottom surface 4e and a second cutout side surface 4f. The second notch bottom surface 4e is continuous with the end surface 4c and extends in a direction orthogonal thereto. The second notch side surface 4f is formed between the second notch bottom surface 4e and the back surface 4b, and extends in a direction orthogonal to the second notch bottom surface 4e and the back surface 4b. The first notch part 3d and the second notch part 4d are formed symmetrically with respect to the joining reference line X (in this embodiment, an extension line of the first abutting part J2).

第一切欠部3dと第二切欠部4dは、端面3cと端面4cとが突き合わされた状態において、単一の凹溝5を構成する。第一切欠底面3eと第二切欠底面4eは、凹溝5の底面5aを構成する。第一切欠側面3fは、凹溝5の一方の側面5bを構成し、第二切欠側面4fは、凹溝5の他方の側面5cを構成する。凹溝5は、第一金属部材1側に開口する。凹溝5は、第一金属部材1の形状に対応する断面矩形状を呈する。凹溝5の溝幅は、本実施形態では第一金属部材1の板厚と同等に形成されている。凹溝5は、第一金属部材1の一端縁を嵌合可能に形成されている。   The first notch 3d and the second notch 4d constitute a single concave groove 5 in a state where the end face 3c and the end face 4c are in contact with each other. The first notch bottom surface 3 e and the second notch bottom surface 4 e constitute the bottom surface 5 a of the groove 5. The first notch side surface 3f constitutes one side surface 5b of the groove 5 and the second notch side surface 4f constitutes the other side surface 5c of the groove 5. The concave groove 5 opens to the first metal member 1 side. The concave groove 5 has a rectangular cross section corresponding to the shape of the first metal member 1. The groove width of the concave groove 5 is formed to be equal to the plate thickness of the first metal member 1 in this embodiment. The concave groove 5 is formed so that one end edge of the first metal member 1 can be fitted.

突合せ工程では、まず第二金属部材3の端面3cと第三金属部材4の端面4cとを突き合わせて第一突合せ部J2を形成する。このように突き合わせると、第一切欠部3d及び第二切欠部4dによって第二金属部材3と第三金属部材4とに跨る単一かつ断面矩形の凹溝5が形成される。次に、第二金属部材3及び第三金属部材4の凹溝5に第一金属部材1の端面1aを挿入して当該端面1aを凹溝5の底面5aに突き合わせて第二突合せ部J3(図12参照)を形成する。本実施形態に係る突合せ工程では、凹溝5の溝幅が第一金属部材1の板厚と同等に形成されているため、第一金属部材1の板厚方向の側面1b,1cと凹溝5の溝幅方向の側面5b,5cとがそれぞれ当接し、第一金属部材1の一端縁が凹溝5に嵌合する。   In the butting step, first, the end surface 3c of the second metal member 3 and the end surface 4c of the third metal member 4 are butted to form the first butting portion J2. In this way, a single and rectangular recess groove 5 is formed across the second metal member 3 and the third metal member 4 by the first notch 3d and the second notch 4d. Next, the end surface 1a of the first metal member 1 is inserted into the concave groove 5 of the second metal member 3 and the third metal member 4, and the end surface 1a is abutted against the bottom surface 5a of the concave groove 5 so that the second abutting portion J3 ( 12). In the butting process according to the present embodiment, the groove width of the groove 5 is formed to be equal to the plate thickness of the first metal member 1, and therefore the side surfaces 1b and 1c in the plate thickness direction of the first metal member 1 and the groove The side surfaces 5b and 5c in the groove width direction 5 are in contact with each other, and one end edge of the first metal member 1 is fitted into the groove 5.

配置工程では、第二金属部材3の表面3aと第三金属部材4の表面4aとに跨るように補助部材10を配置する。補助部材10は、本実施形態では、第一金属部材1、第二金属部材3及び第三金属部材4と同じ材料で形成されている。また、配置工程では、第二金属部材3の表面3a及び第三金属部材4の表面4aにおいて、第一金属部材1及び凹溝5と対応する位置に補助部材10を配置する。本実施形態に係る配置工程では、補助部材10の中央部と第一金属部材1の板厚方向の中心と第一突合せ部J2とが概ね重なる位置に配置する。   In the arranging step, the auxiliary member 10 is arranged so as to straddle the surface 3 a of the second metal member 3 and the surface 4 a of the third metal member 4. In the present embodiment, the auxiliary member 10 is formed of the same material as the first metal member 1, the second metal member 3, and the third metal member 4. In the placement step, the auxiliary member 10 is placed at a position corresponding to the first metal member 1 and the groove 5 on the surface 3 a of the second metal member 3 and the surface 4 a of the third metal member 4. In the arrangement | positioning process which concerns on this embodiment, it arrange | positions in the position where the center part of the auxiliary member 10, the center of the plate | board thickness direction of the 1st metal member 1, and the 1st butt | matching part J2 substantially overlap.

摩擦攪拌工程は、図12に示すように、補助部材10の表面10a側から回転する接合用回転ツールFを挿入し、第一突合せ部J2及び第二突合せ部J3を摩擦攪拌接合する工程である。   As shown in FIG. 12, the friction stirring step is a step of inserting the rotating tool F for rotation rotating from the surface 10a side of the auxiliary member 10 and friction stir welding the first butting portion J2 and the second butting portion J3. .

摩擦攪拌工程では、補助部材10の表面10aから右回転させた攪拌ピンF2を挿入する。摩擦攪拌工程では、攪拌ピンF2と第一金属部材1、第二金属部材3、第三金属部材4及び補助部材10を接触させた状態で、図12の手前側から奥側に向けて第一突合せ部J2及び第二突合せ部J3に沿って接合用回転ツールFを相対移動させる。また、摩擦攪拌工程では、攪拌ピンF2の基端側は露出させた状態で摩擦攪拌を行う。接合用回転ツールFの回転中心軸Cは、第一金属部材1の板厚方向の中心と凹溝5の溝幅方向の中心と第一突合せ部J2とを通る位置に設定している。接合用回転ツールFの移動軌跡には、塑性化領域W1が形成される。攪拌ピンF2の挿入深さは適宜設定すればよいが、本実施形態では、攪拌ピンF2が第一金属部材1と接触するように設定している。   In the friction stirring step, the stirring pin F2 rotated right from the surface 10a of the auxiliary member 10 is inserted. In the friction stir process, the first stirrer F2 and the first metal member 1, the second metal member 3, the third metal member 4 and the auxiliary member 10 are in contact with each other from the near side to the far side in FIG. The joining rotary tool F is relatively moved along the butting portion J2 and the second butting portion J3. In the friction stirring step, friction stirring is performed with the base end side of the stirring pin F2 exposed. The rotation center axis C of the rotating tool F for joining is set to a position passing through the center of the first metal member 1 in the plate thickness direction, the center of the groove 5 in the groove width direction, and the first butting portion J2. A plasticized region W1 is formed in the movement locus of the welding rotary tool F. The insertion depth of the stirring pin F <b> 2 may be set as appropriate, but in the present embodiment, the stirring pin F <b> 2 is set so as to contact the first metal member 1.

なお、摩擦攪拌工程では、攪拌ピンF2のみを第二金属部材3、第三金属部材4及び補助部材10のみに接触させて摩擦攪拌接合を行ってもよい。この場合は、第二金属部材3と第三金属部材4と攪拌ピンF2との摩擦熱によって第二突合せ部J3が塑性流動化して接合される。補助部材10の表面10aにはバリVが形成される。   In the friction stirring step, only the stirring pin F2 may be brought into contact with only the second metal member 3, the third metal member 4, and the auxiliary member 10 to perform the friction stir welding. In this case, the second butted portion J3 is plastically fluidized and joined by frictional heat between the second metal member 3, the third metal member 4, and the stirring pin F2. A burr V is formed on the surface 10 a of the auxiliary member 10.

除去工程は、図13に示すように、第二金属部材3及び第三金属部材4から補助部材10を除去する工程である。除去工程では、補助部材10の両端をめくり上げつつ、凹溝Dを境に折り曲げるようにして切除する。凹溝Dは、塑性化領域W1のうち深くえぐれている部位である。除去工程は、切削工具等を用いてよいが、本実施形態では手作業で除去している。以上の工程により、図14に示すように、第一金属部材1と第二金属部材3と第三金属部材4とが正面視T字状に接合される。   The removal process is a process of removing the auxiliary member 10 from the second metal member 3 and the third metal member 4 as shown in FIG. In the removal process, the both ends of the auxiliary member 10 are turned up, and the auxiliary member 10 is cut off so as to be bent at the groove D. The concave groove D is a portion that is deeply buried in the plasticized region W1. In the removal process, a cutting tool or the like may be used, but in this embodiment, the removal process is performed manually. Through the above steps, as shown in FIG. 14, the first metal member 1, the second metal member 3, and the third metal member 4 are joined in a T shape when viewed from the front.

以上説明した第四実施形態に係る接合方法によっても第一実施形態と略同等の効果を奏することができる。すなわち、第二金属部材3と第三金属部材4を突き合わせて形成される凹溝5に第一金属部材1の端面1aを挿入して当該端面1aを凹溝5の底面5aに突き合わせるため、突合せ工程時に第一金属部材1と第二金属部材3と第三金属部材4との位置ずれを防ぐことができる。   The bonding method according to the fourth embodiment described above can also provide substantially the same effect as the first embodiment. That is, to insert the end surface 1a of the first metal member 1 into the concave groove 5 formed by abutting the second metal member 3 and the third metal member 4, and abut the end surface 1a to the bottom surface 5a of the concave groove 5, It is possible to prevent displacement of the first metal member 1, the second metal member 3, and the third metal member 4 during the butting process.

[第五実施形態]
次に、本発明の第五実施形態に係る接合方法について説明する。第五実施形態に係る接合方法では、突合せ工程と、配置工程と、摩擦攪拌工程と、除去工程とを行う。第五実施形態に係る接合方法は、補助部材10の配置位置が第四実施形態と相違する。第五実施形態に係る接合方法では、第四実施形態と相違する部分を中心に説明する。
[Fifth embodiment]
Next, the joining method according to the fifth embodiment of the present invention will be described. In the joining method according to the fifth embodiment, a butt process, an arrangement process, a friction stirring process, and a removal process are performed. The joining method according to the fifth embodiment is different from the fourth embodiment in the arrangement position of the auxiliary member 10. The joining method according to the fifth embodiment will be described with a focus on the differences from the fourth embodiment.

突合せ工程では、図15に示すように、第四実施形態と同様に第二金属部材3の端面3cと第三金属部材4の端面4cとを突き合わせて第一突合せ部J2を形成する。このように突き合わせると、第一切欠部3d及び第二切欠部4dによって第二金属部材3と第三金属部材4とに跨る単一かつ断面矩形の凹溝5が形成される。次に、第二金属部材3及び第三金属部材4の凹溝5に第一金属部材1の端面1aを挿入して当該端面1aを凹溝5の底面5aに突き合わせて第二突合せ部J3を形成する。   In the butting step, as shown in FIG. 15, the first butting portion J2 is formed by butting the end surface 3c of the second metal member 3 and the end surface 4c of the third metal member 4 as in the fourth embodiment. In this way, a single and rectangular recess groove 5 is formed across the second metal member 3 and the third metal member 4 by the first notch 3d and the second notch 4d. Next, the end face 1a of the first metal member 1 is inserted into the groove 5 of the second metal member 3 and the third metal member 4, the end face 1a is butted against the bottom face 5a of the groove 5, and the second butted portion J3 is formed. Form.

ここで、図15に示すように、摩擦攪拌工程の際に、接合用回転ツールF(図11参照)の回転中心軸Cが通る予定位置を「接合基準線X」と設定する。接合基準線Xは、本実施形態では第一金属部材1の板厚方向の中心と凹溝5の溝幅方向の中心と第一突合せ部J2と重なるように設定している。配置工程では、補助部材10を第一突合せ部J2に対して一方側のみの第三金属部材4の表面4aに配置しつつ、補助部材10の側面10cが、第一突合せ部J2と重なる位置に補助部材10を配置する。なお、配置工程では、補助部材10を第一突合せ部J2に対して他方側のみの第二金属部材3の表面3aに配置してもよい。
本実施形態に係る摩擦攪拌工程及び除去工程は、上記した第二実施形態と略同様の方法で行う。
Here, as shown in FIG. 15, the planned position through which the rotation center axis C of the rotating tool for welding F (see FIG. 11) passes is set as a “joining reference line X” during the friction stirring step. In the present embodiment, the joining reference line X is set so as to overlap the center of the first metal member 1 in the plate thickness direction, the center of the groove 5 in the groove width direction, and the first butted portion J2. In the arranging step, the auxiliary member 10 is arranged on the surface 4a of the third metal member 4 only on one side with respect to the first abutting portion J2, and the side surface 10c of the auxiliary member 10 overlaps the first abutting portion J2. The auxiliary member 10 is disposed. In the arrangement step, the auxiliary member 10 may be arranged on the surface 3a of the second metal member 3 only on the other side with respect to the first abutting portion J2.
The friction stirring step and the removing step according to the present embodiment are performed by a method substantially similar to that of the second embodiment described above.

以上説明した第五実施形態に係る接合方法によっても第四実施形態と略同等の効果を奏することができる。すなわち、第二金属部材3と第三金属部材4を突き合わせて形成される凹溝5に第一金属部材1の端面1aを挿入して当該端面1aを凹溝5の底面5aに突き合わせるため、突合せ工程時に第一金属部材1と第二金属部材3と第三金属部材4との位置ずれを防ぐことができる。
また、第五実施形態に係る接合方法によっても第二実施形態と略同等の効果を奏することができる。すなわち、第五実施形態に係る配置工程では補助部材10を第一突合せ部J2に対して一方側の第三金属部材4の表面4aに配置し、摩擦攪拌工程では補助部材10側にバリVが発生するように接合条件を設定した。これにより、第一突合せ部J2に対して一方側に配置された補助部材10にバリVを集約することができる。これにより、バリVを補助部材10ごと除去できるため、バリVを容易に除去することができる。
The bonding method according to the fifth embodiment described above can also provide substantially the same effect as that of the fourth embodiment. That is, to insert the end surface 1a of the first metal member 1 into the concave groove 5 formed by abutting the second metal member 3 and the third metal member 4, and abut the end surface 1a to the bottom surface 5a of the concave groove 5, It is possible to prevent displacement of the first metal member 1, the second metal member 3, and the third metal member 4 during the butting process.
In addition, the joining method according to the fifth embodiment can provide substantially the same effect as the second embodiment. That is, in the arrangement step according to the fifth embodiment, the auxiliary member 10 is arranged on the surface 4a of the third metal member 4 on one side with respect to the first abutting portion J2, and in the friction stirring step, the burr V is formed on the auxiliary member 10 side. Joining conditions were set to occur. Thereby, the burr | flash V can be concentrated on the auxiliary member 10 arrange | positioned on the one side with respect to the 1st butt | matching part J2. Thereby, since the burr | flash V can be removed with the auxiliary member 10, the burr | flash V can be removed easily.

[第六実施形態]
次に、本発明の第六実施形態に係る接合方法について説明する。第六実施形態に係る接合方法では、突合せ工程と、配置工程と、摩擦攪拌工程と、除去工程とを行う。第六実施形態に係る接合方法は、補助部材10の配置位置が第四実施形態と相違する。第六実施形態に係る接合方法では、第四実施形態と相違する部分を中心に説明する。
[Sixth embodiment]
Next, the joining method according to the sixth embodiment of the present invention will be described. In the joining method according to the sixth embodiment, a butt process, an arrangement process, a friction stirring process, and a removal process are performed. The joining method according to the sixth embodiment is different from the fourth embodiment in the arrangement position of the auxiliary member 10. The joining method according to the sixth embodiment will be described with a focus on the differences from the fourth embodiment.

突合せ工程では、図16に示すように、第四実施形態と同様に第二金属部材3の端面3cと第三金属部材4の端面4cとを突き合わせて第一突合せ部J2を形成する。このように突き合わせると、第一切欠部3d及び第二切欠部4dによって第二金属部材3と第三金属部材4とに跨る単一かつ断面矩形の凹溝5が形成される。次に、第二金属部材3及び第三金属部材4の凹溝5に第一金属部材1の端面1aを挿入して当該端面1aを凹溝5の底面5aに突き合わせて第二突合せ部J3を形成する。本実施形態でも、接合基準線Xは第一金属部材1の板厚方向の中心と凹溝5の溝幅方向の中心と第一突合せ部J2と重なる位置に設定している。   In the butting step, as shown in FIG. 16, the end face 3c of the second metal member 3 and the end face 4c of the third metal member 4 are abutted to form the first abutting portion J2 as in the fourth embodiment. In this way, a single and rectangular recess groove 5 is formed across the second metal member 3 and the third metal member 4 by the first notch 3d and the second notch 4d. Next, the end face 1a of the first metal member 1 is inserted into the groove 5 of the second metal member 3 and the third metal member 4, the end face 1a is butted against the bottom face 5a of the groove 5, and the second butted portion J3 is formed. Form. Also in this embodiment, the joining reference line X is set at a position where the center of the first metal member 1 in the plate thickness direction, the center of the groove 5 in the groove width direction, and the first butted portion J2 overlap.

配置工程では、補助部材10を第一突合せ部J2に対して他方側の第二金属部材3の表面3aに配置しつつ、補助部材10の側面10cが第一突合せ部J2に対して一方側の第三金属部材4にわずかに突出するように補助部材10を配置する。補助部材10の厚さ及び接合基準線Xから側面10cまでの距離は、摩擦攪拌工程において、接合部(塑性化領域W1)に金属不足が発生せず、かつ、摩擦攪拌工程後に一方側に補助部材10が残存しないように適宜設定する。なお、配置工程では、補助部材10を第一突合せ部J2に対して一方側の第三金属部材4の表面4aに配置しつつ、補助部材10の側面10cが第一突合せ部J2に対して他方側の第二金属部材3にわずかに突出するように補助部材10を配置してもよい。
本実施形態に係る摩擦攪拌工程及び除去工程は、上記した第三実施形態と略同様の方法で行う。
In the arranging step, the auxiliary member 10 is arranged on the surface 3a of the second metal member 3 on the other side with respect to the first butting portion J2, and the side surface 10c of the auxiliary member 10 is on one side with respect to the first butting portion J2. The auxiliary member 10 is arranged so as to slightly protrude from the third metal member 4. The thickness of the auxiliary member 10 and the distance from the joining reference line X to the side surface 10c are such that no shortage of metal occurs in the joining portion (plasticization region W1) in the friction stirring process, and assistance is provided on one side after the friction stirring process. It sets suitably so that the member 10 may not remain | survive. In the arranging step, the auxiliary member 10 is arranged on the surface 4a of the third metal member 4 on one side with respect to the first abutting portion J2, while the side surface 10c of the auxiliary member 10 is on the other side with respect to the first abutting portion J2. The auxiliary member 10 may be disposed so as to slightly protrude from the second metal member 3 on the side.
The friction stirring step and the removal step according to the present embodiment are performed by a method substantially similar to that of the third embodiment described above.

以上説明した第六実施形態に係る接合方法によっても第四実施形態と略同等の効果を奏することができる。すなわち、第二金属部材3と第三金属部材4を突き合わせて形成される凹溝5に第一金属部材1の端面1aを挿入して当該端面1aを凹溝5の底面5aに突き合わせるため、突合せ工程時に第一金属部材1と第二金属部材3と第三金属部材4との位置ずれを防ぐことができる。
また、第六実施形態に係る接合方法によっても第三実施形態と略同等の効果を奏することができる。すなわち、配置工程において、第一突合せ部J2に対して他方側の第二金属部材3の表面3aに補助部材10を配置しつつ、一方側の第三金属部材4の表面4aに補助部材10の側面10cをわずかに突出させる。また、摩擦攪拌工程では、第一突合せ部J2及び第二突合せ部J3を摩擦攪拌接合しつつ、一方側の第三金属部材4の表面4aに補助部材10及びバリVが残存せず、補助部材10側にバリVが発生するように接合条件を設定する。これにより、接合部(塑性化領域W1)の金属不足をバランスよく防ぐことができるとともに、他方側に配置された補助部材10にバリVを集約することができる。これにより、バリVを補助部材10ごと除去できるため、バリVを容易に除去することができる。
The bonding method according to the sixth embodiment described above can also provide substantially the same effect as that of the fourth embodiment. That is, to insert the end surface 1a of the first metal member 1 into the concave groove 5 formed by abutting the second metal member 3 and the third metal member 4, and abut the end surface 1a to the bottom surface 5a of the concave groove 5, It is possible to prevent displacement of the first metal member 1, the second metal member 3, and the third metal member 4 during the butting process.
In addition, the joining method according to the sixth embodiment can provide substantially the same effect as that of the third embodiment. That is, in the arranging step, the auxiliary member 10 is arranged on the surface 4a of the third metal member 4 on one side while the auxiliary member 10 is arranged on the surface 3a of the second metal member 3 on the other side with respect to the first butting portion J2. The side surface 10c is slightly protruded. In the friction stirring step, the auxiliary member 10 and the burr V do not remain on the surface 4a of the third metal member 4 on one side while the first butting portion J2 and the second butting portion J3 are friction stir welded, and the auxiliary member The joining conditions are set so that burrs V are generated on the 10 side. As a result, it is possible to prevent a shortage of metal in the joint portion (plasticization region W1) in a well-balanced manner and to collect the burrs V in the auxiliary member 10 disposed on the other side. Thereby, since the burr | flash V can be removed with the auxiliary member 10, the burr | flash V can be removed easily.

以上本発明の実施形態について説明したが、本発明の趣旨に反しない範囲において適宜設計変更が可能である。   Although the embodiments of the present invention have been described above, design changes can be made as appropriate without departing from the spirit of the present invention.

1 第一金属部材
2,3 第二金属部材
4 第三金属部材
10 補助部材
1a 端面
2d,5 凹溝
2e,5a 底面
3b 裏面
3d 第一切欠部
4b 裏面
4d 第二切欠部
F 回転ツール
F1 連結部
F2 攪拌ピン
J1 突合せ部
J2 第一突合せ部
J3 第二突合せ部
W1 塑性化領域
DESCRIPTION OF SYMBOLS 1 1st metal member 2,3 2nd metal member 4 3rd metal member 10 Auxiliary member 1a End surface 2d, 5 Concave groove 2e, 5a Bottom surface 3b Back surface 3d First notch part 4b Back surface 4d Second notch part F Rotating tool F1 Connecting portion F2 Stirring pin J1 Butting portion J2 First butting portion J3 Second butting portion W1 Plasticization region

Claims (10)

攪拌ピンを備えた回転ツールを用いて第一金属部材と第二金属部材とを接合する接合方法であって、
裏面に凹溝を有する前記第二金属部材の前記凹溝に、前記第一金属部材の端面を挿入して前記端面を前記凹溝の底面に突き合わせて突合せ部を形成する突合せ工程と、
前記第二金属部材の表面のうち前記第一金属部材に対応する位置に補助部材を配置する配置工程と、
回転する前記攪拌ピンを前記補助部材の表面側から挿入し、前記攪拌ピンのみを、前記第二金属部材及び前記補助部材、又は、前記第一金属部材、前記第二金属部材及び補助部材に接触させた状態で前記回転ツールを相対移動させて前記突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含むことを特徴とする接合方法。
A joining method for joining the first metal member and the second metal member using a rotary tool equipped with a stirring pin,
A butting step of inserting an end face of the first metal member into the recessed groove of the second metal member having a recessed groove on the back surface and butting the end face against the bottom surface of the recessed groove; and
An arranging step of arranging an auxiliary member at a position corresponding to the first metal member of the surface of the second metal member;
The rotating stirring pin is inserted from the surface side of the auxiliary member, and only the stirring pin contacts the second metal member and the auxiliary member, or the first metal member, the second metal member, and the auxiliary member. A friction stir process in which the rotating tool is moved relative to each other in a state of being brought into friction stir welding.
バリが形成された前記補助部材を前記第二金属部材から除去する除去工程を含むことを特徴とする請求項1に記載の接合方法。   The joining method according to claim 1, further comprising a removing step of removing the auxiliary member formed with burrs from the second metal member. 前記摩擦攪拌工程では、前記補助部材の中央部に前記攪拌ピンを挿入することを特徴とする請求項1又は請求項2に記載の接合方法。   The joining method according to claim 1 or 2, wherein in the friction stirring step, the stirring pin is inserted into a central portion of the auxiliary member. 前記摩擦攪拌工程の際に、前記回転ツールの回転中心軸が通る予定位置を接合基準線と設定した場合、
前記配置工程では、前記接合基準線に対して一方側にのみ前記補助部材を配置し、
前記摩擦攪拌工程では、前記補助部材に前記バリが発生するように接合条件を設定することを特徴とする請求項2に記載の接合方法。
In the case of the friction stirring step, when the planned position through which the rotation center axis of the rotary tool passes is set as a joining reference line,
In the arrangement step, the auxiliary member is arranged only on one side with respect to the joining reference line,
The joining method according to claim 2, wherein in the friction stirring step, joining conditions are set so that the burrs are generated in the auxiliary member.
前記摩擦攪拌工程の際に、前記回転ツールの回転中心軸が通る予定位置を接合基準線と設定した場合、
前記配置工程及び前記摩擦攪拌工程では、前記接合基準線を跨ぐように前記補助部材を配置するとともに、
前記接合基準線に対して一方側の前記補助部材に前記バリを発生させ、かつ、前記摩擦攪拌工程後に他方側に前記補助部材が残存しないように補助部材の配置位置及び接合条件を設定することを特徴とする請求項2に記載の接合方法。
In the case of the friction stirring step, when the planned position through which the rotation center axis of the rotary tool passes is set as a joining reference line,
In the arrangement step and the friction stirring step, the auxiliary member is arranged to straddle the joining reference line,
Setting the position and joining conditions of the auxiliary member so that the burr is generated in the auxiliary member on one side with respect to the joining reference line, and the auxiliary member does not remain on the other side after the friction stirring step. The bonding method according to claim 2.
攪拌ピンを備えた回転ツールを用いて第一金属部材と第二金属部材と第三金属部材とを接合する接合方法であって、
板状を呈し裏面側の角部を切り欠いた前記第二金属部材の端面と板状を呈し裏面側の角部を切り欠いた前記第三金属部材の端面とを突き合わせて凹溝及び第一突合せ部を形成するとともに、前記凹溝に板状の前記第一金属部材の端面を挿入して端面を前記凹溝の底面に突き合わせて第二突合せ部を形成する突合せ工程と、
前記第二金属部材と前記第三金属部材の表面のうち前記第一金属部材に対応する位置に補助部材を配置する配置工程と、
前記補助部材の表面側から前記回転ツールの前記攪拌ピンを挿入し、前記回転ツールを前記凹溝に沿って相対移動させて、前記第一突合せ部及び前記第二突合せ部を摩擦攪拌接合する摩擦攪拌工程と、を含み、
前記摩擦攪拌工程において、前記攪拌ピンのみを前記第二金属部材、前記第三金属部材及び前記補助部材、又は前記第二金属部材、前記第三金属部材、前記第一金属部材及び前記補助部材に接触させた状態で、前記第一突合せ部及び前記第二突合せ部を摩擦攪拌接合することを特徴とする接合方法。
A joining method for joining the first metal member, the second metal member, and the third metal member using a rotary tool equipped with a stirring pin,
The end face of the second metal member having a plate shape and notched corners on the back surface and the end surface of the third metal member having a plate shape and notched corners on the back surface are abutted with each other to form a groove and a first groove. A butting step of forming a butting portion and inserting a plate-like end surface of the first metal member into the groove and butting the end surface against the bottom surface of the groove to form a second butting portion;
An arranging step of arranging an auxiliary member at a position corresponding to the first metal member among the surfaces of the second metal member and the third metal member;
Friction that inserts the stirring pin of the rotary tool from the surface side of the auxiliary member and relatively moves the rotary tool along the concave groove to friction stir weld the first butting portion and the second butting portion. A stirring step,
In the friction stirring step, only the stirring pin is applied to the second metal member, the third metal member, and the auxiliary member, or the second metal member, the third metal member, the first metal member, and the auxiliary member. The joining method, wherein the first butted portion and the second butted portion are friction stir welded in a contact state.
バリが形成された前記補助部材を前記第二金属部材及び前記第三金属部材から除去する除去工程を含むことを特徴とする請求項6に記載の接合方法。   The joining method according to claim 6, further comprising a removing step of removing the auxiliary member formed with burrs from the second metal member and the third metal member. 前記摩擦攪拌工程では、前記補助部材の中央部に前記攪拌ピンを挿入することを特徴とする請求項6又は請求項7に記載の接合方法。   The joining method according to claim 6 or 7, wherein in the friction stirring step, the stirring pin is inserted into a central portion of the auxiliary member. 前記配置工程では、前記第一突合せ部に対して一方側にのみ前記補助部材を配置し、
前記摩擦攪拌工程では、前記補助部材に前記バリが発生するように接合条件を設定することを特徴とする請求項7に記載の接合方法。
In the arranging step, the auxiliary member is arranged only on one side with respect to the first butting portion,
The joining method according to claim 7, wherein in the friction stirring step, joining conditions are set so that the burrs are generated in the auxiliary member.
前記配置工程及び前記摩擦攪拌工程では、前記第一突合せ部を跨ぐように前記補助部材を配置するとともに、
前記第一突合せ部に対して一方側の前記補助部材に前記バリを発生させ、かつ、前記摩擦攪拌工程後に他方側に前記補助部材が残存しないように補助部材の配置位置及び接合条件を設定することを特徴とする請求項7に記載の接合方法。
In the arrangement step and the friction stirring step, the auxiliary member is arranged so as to straddle the first abutting portion,
The position of the auxiliary member and the joining condition are set so that the burr is generated in the auxiliary member on one side with respect to the first butting portion, and the auxiliary member does not remain on the other side after the friction stirring step. The bonding method according to claim 7.
JP2017000452A 2016-06-20 2017-01-05 Joining method Pending JP2018108595A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1110365A (en) * 1997-06-25 1999-01-19 Showa Alum Corp Formation of t-joint with friction stirring joining
JP2013000755A (en) * 2011-06-14 2013-01-07 Hitachi Ltd High corrosion resistance plant equipment
JP2015213928A (en) * 2014-05-08 2015-12-03 日本軽金属株式会社 Friction-agitation joint method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1110365A (en) * 1997-06-25 1999-01-19 Showa Alum Corp Formation of t-joint with friction stirring joining
JP2013000755A (en) * 2011-06-14 2013-01-07 Hitachi Ltd High corrosion resistance plant equipment
JP2015213928A (en) * 2014-05-08 2015-12-03 日本軽金属株式会社 Friction-agitation joint method

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