JP2018020365A - Method for manufacturing cylindrical member - Google Patents

Method for manufacturing cylindrical member Download PDF

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JP2018020365A
JP2018020365A JP2016154175A JP2016154175A JP2018020365A JP 2018020365 A JP2018020365 A JP 2018020365A JP 2016154175 A JP2016154175 A JP 2016154175A JP 2016154175 A JP2016154175 A JP 2016154175A JP 2018020365 A JP2018020365 A JP 2018020365A
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auxiliary member
cylindrical member
manufacturing
friction
cylindrical
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JP6699435B2 (en
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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 JP2016154175A priority Critical patent/JP6699435B2/en
Priority to PCT/JP2017/021300 priority patent/WO2018025497A1/en
Priority to CN201780005077.XA priority patent/CN108472761B/en
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Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a cylindrical member which prevents metal shortage of a junction and makes a cross section closer to a circle.SOLUTION: A friction agitation joint method includes: a butting step of rounding a flat-plate-like metal plate 1 to form a cylindrical joined member 1A and butting end faces to form a butting portion J1; a supporting member arrangement step of arranging a curved surface portion K1 formed on a backing jig K on an inner peripheral surface side of the butting portion J1, and arranging a supporting member 10 on an outer peripheral surface side of the butting portion J1; and a friction agitation step of inserting a rotating agitation pin F2 from the side of a surface 10a of the supporting member 10, relatively moving a rotary tool F for joint along the butting portion J1 in a state where only the agitation pin F2 is brought into contact with the cylindrical joined member 1A and the supporting member 10, and subjecting the butting portion J1 to friction agitation joint.SELECTED DRAWING: Figure 5

Description

本発明は、円筒状部材の製造方法に関する。   The present invention relates to a method for manufacturing a cylindrical member.

例えば、特許文献１には、平板上の金属板を丸めつつ、端面同士を突き合わせて形成された突合せ部に対して摩擦攪拌接合を行い、円筒状部材を製造する方法が開示されている。当該従来技術の摩擦攪拌工程では、裏当て治具に形成された平面部を突合せ部の内周面側に配置し、突合せ部の外周面側から突合せ部に沿って回転する回転ツールを相対移動させる。   For example, Patent Document 1 discloses a method of manufacturing a cylindrical member by performing friction stir welding on a butt portion formed by abutting end surfaces while rolling a metal plate on a flat plate. In the friction stirring process of the prior art, the flat part formed on the backing jig is arranged on the inner peripheral surface side of the abutting part, and the rotary tool that rotates along the abutting part is relatively moved from the outer peripheral surface side of the abutting part. Let

ここで、金属板を丸めて端面同士を突き合わせると、端面間にＶ字状の隙間が不可避的に形成されてしまうため、摩擦攪拌工程を行う際に接合部が金属不足になるという問題がある。しかし、当該従来技術のように、裏当て治具の平面部上で端面同士を突き合わせることにより、突合せ部にＶ字状の隙間が形成されるのを防ぐことができる。   Here, when the metal plates are rounded and the end faces are brought into contact with each other, a V-shaped gap is inevitably formed between the end faces. is there. However, it is possible to prevent a V-shaped gap from being formed in the abutting portion by abutting the end surfaces on the flat portion of the backing jig as in the related art.

特許第５９２０８２６号公報Japanese Patent No. 5920826

ところが、当該従来技術であると、裏当て治具の平面部上で摩擦攪拌接合を行うため、接合部が平坦になってしまう。そのため、製造された円筒状部材に平坦な部位が形成されてしまい、円筒状部材を断面円形にするのが困難になるという問題がある。   However, in the related art, since the friction stir welding is performed on the flat portion of the backing jig, the joint portion becomes flat. Therefore, a flat part is formed in the manufactured cylindrical member, and there is a problem that it is difficult to make the cylindrical member circular in cross section.

そこで、本発明は、接合部の金属不足を防ぐとともに、断面を円形に近づけることができる円筒状部材の製造方法を提供することを課題とする。   Then, this invention makes it a subject to provide the manufacturing method of the cylindrical member which can make a cross section close to circular while preventing the metal shortage of a junction part.

前記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円筒状部材を製造する方法であって、平板状の金属板を丸めて円筒状被接合部材を形成するとともに、端面同士を突き合わせて突合せ部を形成する突合せ工程と、裏当て治具に形成された曲面部を、前記突合せ部の内周面側に配置するとともに、前記突合せ部の外周面側に前記円筒状被接合部材に沿うように補助部材を配置する補助部材配置工程と、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円筒状被接合部材及び前記補助部材に接触させた状態で、前記突合せ部に沿って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 the above-mentioned problem, the present invention is a method of manufacturing a cylindrical member using a rotary tool provided with a stirring pin, and rounds a flat metal plate to form a cylindrical member to be joined. A butting step of butting the end surfaces together to form a butting portion, and a curved surface portion formed on the backing jig is disposed on the inner peripheral surface side of the butting portion, and the cylindrical surface on the outer peripheral surface side of the butting portion An auxiliary member arranging step of arranging the auxiliary member along the member to be joined, and the rotating stirring pin is inserted from the surface side of the auxiliary member, and only the stirring pin is inserted into the cylindrical member to be joined and the auxiliary member. A friction stir process in which the rotating tool is relatively moved along the abutting portion and the abutting portion is friction stir welded.

かかる製造方法によれば、曲面部を備えた裏当て治具を配置して突合せ部を摩擦攪拌接合するため、円筒状部材の断面を円形に近づけることができる。また、突合せ部にはＶ字状の隙間が形成されるが、円筒状被接合部材に補助部材を配置した状態で摩擦攪拌接合を行うため、接合部が金属不足になるのを防ぐことができる。また、摩擦攪拌工程では、攪拌ピンのみを円筒状被接合部材及び補助部材に接触させた状態で接合するため、摩擦攪拌装置にかかる負荷を軽減することができる。   According to this manufacturing method, since the backing jig provided with the curved surface portion is arranged and the butt portion is friction stir welded, the cross section of the cylindrical member can be made close to a circle. In addition, a V-shaped gap is formed in the butt portion, but since the friction stir welding is performed in a state where the auxiliary member is disposed on the cylindrical member to be joined, it is possible to prevent the joining portion from being short of metal. . Further, in the friction stirring step, since only the stirring pin is joined in contact with the cylindrical member to be joined and the auxiliary member, the load on the friction stirring device can be reduced.

また、バリが形成された前記補助部材を前記円筒状被接合部材から除去する除去工程を含むことが好ましい。かかる製造方法によれば、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 the said cylindrical to-be-joined member. According to this manufacturing method, the burr can be easily removed together with the auxiliary member.

また、前記摩擦攪拌工程では、摩擦攪拌接合で発生するバリが前記補助部材に形成されるように接合条件を設定することが好ましい。かかる製造方法によれば、バリを補助部材ごとより容易に除去することができる。   In the friction stirring step, it is preferable to set the joining conditions so that burrs generated in the friction stir welding are formed on the auxiliary member. According to this manufacturing method, the burr can be easily removed together with the auxiliary member.

また、前記補助部材配置工程では、前記補助部材を前記突合せ部を挟んで一方側に配置しつつ、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程度に他方側にわずかに突出するように配置し、前記摩擦攪拌工程では、摩擦攪拌接合で発生するバリが、前記一方側の前記補助部材に形成されるように接合条件を設定することが好ましい。   Further, in the auxiliary member arranging step, the auxiliary member is arranged on one side with the butting portion interposed therebetween, and slightly protrudes on the other side so that the auxiliary member does not remain on the other side after the friction stirring step. In the friction stir step, it is preferable to set the joining conditions so that burrs generated in the friction stir welding are formed in the auxiliary member on the one side.

かかる製造方法によれば、接合部の金属不足をバランスよく防ぐことができるとともに、接合部に対して一方側のみに残存する補助部材を除去するだけでよいため、除去作業を容易に行うことができる。   According to this manufacturing method, it is possible to prevent the metal shortage of the joint portion in a well-balanced manner, and it is only necessary to remove the auxiliary member remaining only on one side with respect to the joint portion. it can.

本発明に係る円筒状部材の製造方法によれば、接合部の金属不足を防ぐとともに、円筒状部材の断面を円形に近づけることができる。   According to the method for manufacturing a cylindrical member according to the present invention, it is possible to prevent the metal shortage of the joint portion and to make the cross section of the cylindrical member close to a circle.

本発明の第一実施形態に係る円筒状部材の製造方法の準備工程を示す斜視図である。It is a perspective view which shows the preparatory process of the manufacturing method of the cylindrical member which concerns on 1st embodiment of this invention. 第一実施形態に係る円筒状部材の製造方法の突合せ工程を示す斜視図である。It is a perspective view which shows the butt | matching process of the manufacturing method of the cylindrical member which concerns on 1st embodiment. 第一実施形態に係る円筒状部材の製造方法の補助部材配置工程を示す断面図である。It is sectional drawing which shows the auxiliary member arrangement | positioning process of the manufacturing method of the cylindrical member which concerns on 1st embodiment. 第一実施形態に係る円筒状部材の製造方法のタブ材配置工程を示す斜視図である。It is a perspective view which shows the tab material arrangement | positioning process of the manufacturing method of the cylindrical member which concerns on 1st embodiment. 第一実施形態に係る円筒状部材の製造方法の摩擦攪拌工程を示す斜視図である。It is a perspective view which shows the friction stirring process of the manufacturing method of the cylindrical member which concerns on 1st embodiment. 第一実施形態に係る円筒状部材の製造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 manufacturing method of the cylindrical member which concerns on 1st embodiment. 第一実施形態に係る円筒状部材の製造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 manufacturing method of the cylindrical member which concerns on 1st embodiment. 本発明の第二実施形態に係る円筒状部材の製造方法の補助部材配置工程を示す断面図である。It is sectional drawing which shows the auxiliary member arrangement | positioning process of the manufacturing method of the cylindrical member which concerns on 2nd embodiment of this invention. 第二実施形態に係る円筒状部材の製造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 manufacturing method of the cylindrical member which concerns on 2nd embodiment. 第二実施形態に係る円筒状部材の製造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 manufacturing method of the cylindrical member which concerns on 2nd embodiment.

［第一実施形態］
本発明の第一実施形態に係る円筒状部材の製造方法について図面を参照して詳細に説明する。本実施形態に係る接合方法では、準備工程と、突合せ工程と、補助部材配置工程と、タブ材配置工程と、摩擦攪拌工程と、除去工程と、を行う。なお、以下の説明における「表面」とは、「裏面」の反対側の面という意味である。 [First embodiment]
The manufacturing method of the cylindrical member which concerns on 1st embodiment of this invention is demonstrated in detail with reference to drawings. In the joining method according to the present embodiment, a preparation process, a butting process, an auxiliary member arranging process, a tab material arranging process, a friction stirring process, and a removing process are performed. In the following description, “front surface” means a surface opposite to the “back surface”.

準備工程は、図１に示すように、金属板１及び裏当て治具Ｋを用意する工程である。金属板１は、板状部材である。金属板１の材料は、摩擦攪拌可能な金属であれば特に制限されないが、例えば、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から適宜選択すればよい。   The preparation step is a step of preparing the metal plate 1 and the backing jig K as shown in FIG. The metal plate 1 is a plate member. The material of the metal plate 1 is not particularly limited as long as it is a metal capable of friction stir, but may be appropriately selected from, for example, aluminum, aluminum alloy, copper, copper alloy, titanium, titanium alloy, magnesium, magnesium alloy and the like.

裏当て治具Ｋは、摩擦攪拌工程の際に接合部の裏当てとして配置される治具である。裏当て治具Ｋは、金属板１よりも長尺の部材であって、上面に断面円弧状を呈する曲面部Ｋ１が形成されている。曲面部Ｋ１の曲率半径は、製造される円筒状部材の曲率半径に応じて適宜設定すればよいが、製造される円筒状部材の曲率半径と略同等に形成されていることが好ましい。   The backing jig K is a jig that is arranged as a backing for the joint during the friction stirring step. The backing jig K is a member longer than the metal plate 1 and has a curved surface portion K1 having an arcuate cross section on the upper surface. The radius of curvature of the curved surface portion K1 may be appropriately set according to the radius of curvature of the cylindrical member to be manufactured, but is preferably formed to be approximately equal to the radius of curvature of the cylindrical member to be manufactured.

突合せ工程は、図２に示すように、金属板１を丸めつつ、金属板１の端面１ａ，１ｂを突き合わせて突合せ部Ｊ１を形成する工程である。金属板１を丸めて形成された部材を円筒状被接合部材１Ａと言う。突合せ工程では、円筒状被接合部材１Ａの内周面に当接するように裏当て治具Ｋを配置するとともに、裏当て治具Ｋの曲面部Ｋ１上に沿って突合せ部Ｊ１を位置させる。突合せ部Ｊ１には、断面Ｖ字状の隙間Ｓが、長手方向に沿って不可避的に形成される。なお、溶接又は摩擦攪拌によって突合せ部Ｊ１に対して仮接合を行ってもよい。仮接合を行うことで、摩擦攪拌工程を容易に行うことができるとともに、突合せ部Ｊ１の目開きを防ぐことができる。   As shown in FIG. 2, the butting process is a process of forming a butting portion J <b> 1 by butting the end surfaces 1 a and 1 b of the metal plate 1 while rolling the metal plate 1. A member formed by rolling the metal plate 1 is referred to as a cylindrical member 1A. In the butting step, the backing jig K is disposed so as to contact the inner peripheral surface of the cylindrical member 1A, and the butting portion J1 is positioned along the curved surface portion K1 of the backing jig K. A gap S having a V-shaped cross section is inevitably formed in the butt portion J1 along the longitudinal direction. In addition, you may perform temporary joining with respect to the butt | matching part J1 by welding or friction stirring. By performing the temporary joining, it is possible to easily perform the friction stirring step and to prevent the opening of the butt portion J1.

補助部材配置工程は、図２及び図３に示すように、突合せ部Ｊ１を覆うように補助部材１０を配置する工程である。補助部材１０は、長尺の板状部材である。補助部材１０は、円筒状被接合部材１Ａと同じ曲率半径で湾曲して形成されている。補助部材１０の材料は、摩擦攪拌可能な金属であればよいが、本実施形態では円筒状被接合部材１Ａと同じ材料で形成されている。補助部材配置工程によって、補助部材１０の裏面１０ｂは、円筒状被接合部材１Ａの外周面に沿って面接触する。補助部材１０の板厚は、摩擦攪拌工程後に接合部（塑性化領域Ｗ）に金属不足が発生しない程度に適宜設定する。   As shown in FIGS. 2 and 3, the auxiliary member arranging step is a step of arranging the auxiliary member 10 so as to cover the butt portion J <b> 1. The auxiliary member 10 is a long plate-like member. The auxiliary member 10 is formed to be curved with the same radius of curvature as the cylindrical member 1A. The auxiliary member 10 may be made of a metal that can be frictionally stirred, but in the present embodiment, the auxiliary member 10 is formed of the same material as the cylindrical member 1A. By the auxiliary member arranging step, the back surface 10b of the auxiliary member 10 is in surface contact along the outer peripheral surface of the cylindrical member 1A. The plate | board thickness of the auxiliary member 10 is suitably set to such an extent that a metal shortage does not occur in the joint portion (plasticization region W) after the friction stirring step.

タブ材配置工程は、図４に示すように、突合せ部Ｊ１の両端にタブ材Ｔ，Ｔを配置する工程である。タブ材Ｔは、湾曲形成された短尺の板状部材であって、円筒状被接合部材１Ａの板厚と同じ板厚で形成されている。タブ材Ｔの曲率半径は、円筒状被接合部材１Ａの曲率半径と同一となるように形成されている。タブ材Ｔは、円筒状被接合部材１Ａと同じ材料で形成されている。タブ材配置工程では、タブ材Ｔを裏当て治具Ｋの曲面部Ｋ１に配置するとともに、タブ材Ｔの端面を円筒状被接合部材１Ａの端面に当接させる。タブ材Ｔと円筒状被接合部材１Ａとは溶接又は摩擦攪拌によって仮接合する。タブ材Ｔの表面と円筒状被接合部材１Ａの外周面とは面一になる。   As shown in FIG. 4, the tab material arranging step is a step of arranging the tab materials T and T at both ends of the butt portion J1. The tab material T is a short plate-like member formed in a curved shape, and is formed with the same plate thickness as the plate thickness of the cylindrical member 1A. The curvature radius of the tab material T is formed to be the same as the curvature radius of the cylindrical member 1A. The tab material T is formed of the same material as the cylindrical member 1A. In the tab material arranging step, the tab material T is arranged on the curved surface portion K1 of the backing jig K, and the end surface of the tab material T is brought into contact with the end surface of the cylindrical member 1A. The tab member T and the cylindrical member 1A are temporarily joined by welding or friction stirring. The surface of the tab member T and the outer peripheral surface of the cylindrical member 1A are flush with each other.

摩擦攪拌工程は、突合せ部Ｊ１に対して接合用回転ツールＦを用いて摩擦攪拌接合を行う工程である。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、例えば工具鋼で形成されている。連結部Ｆ１は、摩擦攪拌装置の回転軸（図示省略）に連結される部位である。連結部Ｆ１は円柱状を呈している。   The friction stirring step is a step of performing friction stir welding on the butting portion J1 using the rotating tool F for welding. The joining rotary tool F corresponds to a “rotary tool” in the claims. The joining rotary tool F is made of, for example, tool steel. The connecting part F1 is a part connected to a rotating shaft (not shown) of the friction stirrer. The connecting portion F1 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（円筒状被接合部材１Ａ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。なお、螺旋溝は省略してもよい。   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 (1A of cylindrical to-be-joined members and the auxiliary member 10) can be decreased. The spiral groove may be omitted.

摩擦攪拌工程では、一方のタブ材Ｔに設定した開始位置Ｓｐに右回転させた接合用回転ツールＦの攪拌ピンＦ２を挿入し、補助部材１０側に相対移動させる。補助部材１０に突入したら、そのまま突合せ部Ｊ１をなぞるようにして接合用回転ツールＦを相対移動させる。摩擦攪拌工程では、図６に示すように、連結部Ｆ１は補助部材１０に接触させず、攪拌ピンＦ２の基端側を露出させた状態で摩擦攪拌接合を行う。攪拌ピンＦ２の挿入深さは適宜設定すればよいが、突合せ部Ｊ１の深さ方向の全体が摩擦攪拌接合されるように設定することが好ましい。接合用回転ツールＦが他方のタブ材Ｔに達したら、接合用回転ツールＦをタブ材Ｔから離脱させる。   In the friction agitation step, the agitation pin F2 of the welding rotary tool F rotated to the right is inserted into the start position Sp set on one of the tab members T, and is relatively moved toward the auxiliary member 10 side. After entering the auxiliary member 10, the joining rotary tool F is relatively moved by tracing the butting portion J <b> 1 as it is. In the friction stirring step, as shown in FIG. 6, the connecting portion F1 is not brought into contact with the auxiliary member 10, and the friction stir welding is performed with the base end side of the stirring pin F2 exposed. The insertion depth of the stirring pin F2 may be set as appropriate, but is preferably set so that the entire depth direction of the butt portion J1 is friction stir welded. When the joining rotary tool F reaches the other tab member T, the joining rotary tool F is detached from the tab member T.

図７に示すように、摩擦攪拌工程後は、接合用回転ツールＦの移動軌跡に沿って塑性化領域Ｗが形成される。また、補助部材１０の表面１０ａにはバリＶが形成される。摩擦攪拌工程が終了したら、タブ材Ｔ，Ｔ及び裏当て治具Ｋを円筒状被接合部材１Ａから取り除く。   As shown in FIG. 7, after the friction stirring step, a plasticized region W is formed along the movement locus of the welding rotary tool F. Further, burrs V are formed on the surface 10 a of the auxiliary member 10. When the friction stirring step is completed, the tab members T and T and the backing jig K are removed from the cylindrical member 1A.

除去工程は、円筒状被接合部材１Ａの外周面から補助部材１０を除去する工程である。除去工程では、塑性化領域Ｗを挟んで両側に残存する補助部材１０を折り曲げるようにして、切除する。除去工程は、切削装置等を用いてもよいが、本実施形態では手作業で行っている。   The removing step is a step of removing the auxiliary member 10 from the outer peripheral surface of the cylindrical member 1A. In the removing step, the auxiliary member 10 remaining on both sides of the plasticized region W is cut and bent. In the removal process, a cutting device or the like may be used, but in this embodiment, the removal process is performed manually.

以上説明した本実施形態に係る円筒状部材の製造方法によれば、曲面部Ｋ１を備えた裏当て治具Ｋを配置して突合せ部Ｊ１を摩擦攪拌接合するため、円筒状部材の断面を円形に近づけることができる。つまり、曲面部Ｋ１上で摩擦攪拌接合を行うため、製造される円筒状部材に平端部が形成されるのを防ぐことができる。また、突合せ工程において突合せ部Ｊ１にはＶ字状の隙間Ｓが形成されるが、円筒状被接合部材１Ａに補助部材１０を配置した状態で摩擦攪拌接合を行うため、接合部（塑性化領域Ｗ）が金属不足になるのを防ぐことができる。   According to the manufacturing method of the cylindrical member according to the present embodiment described above, the backing jig K having the curved surface portion K1 is disposed and the butt portion J1 is friction stir welded. Can be approached. That is, since friction stir welding is performed on the curved surface portion K1, it is possible to prevent the flat end portion from being formed on the manufactured cylindrical member. Further, a V-shaped gap S is formed in the butt part J1 in the butt process, but since the friction stir welding is performed in a state where the auxiliary member 10 is disposed on the cylindrical member 1A, the joint part (plasticization region) It is possible to prevent W) from becoming a metal shortage.

また、摩擦攪拌工程では、攪拌ピンＦ２のみを円筒状被接合部材１Ａ及び補助部材１０に接触させた状態で接合するため、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、除去工程では、バリＶを補助部材１０ごと除去するため、バリＶを容易に除去することができるとともに、別途バリ切除工程を行わなくとも、円筒状部材の外周面をきれいに仕上げることができる。   Further, in the friction stirring step, since only the stirring pin F2 is joined in contact with the cylindrical member 1A and the auxiliary member 10, the load on the friction stirring device can be reduced. Further, since the burr V is removed together with the auxiliary member 10 in the removing process, the burr V can be easily removed, and the outer peripheral surface of the cylindrical member can be finished finely without performing a separate burr cutting process. .

また、タブ材Ｔ，Ｔを用いて摩擦攪拌工程を行うことにより、突合せ部Ｊ１の全長に亘って摩擦攪拌接合を行うことができる。また、タブ材Ｔ，Ｔを用いることで、摩擦攪拌工程において接合用回転ツールＦの開始位置と終了位置を容易に設定することができる。   Further, by performing the friction stir process using the tab materials T and T, the friction stir welding can be performed over the entire length of the butt portion J1. Further, by using the tab materials T and T, the start position and the end position of the welding rotary tool F can be easily set in the friction stirring process.

［第二実施形態］
次に、本発明の第二実施形態に係る円筒状部材の製造方法について説明する。第二実施形態に係る円筒状部材の製造方法では、主に補助部材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円筒状部材の製造方法では、準備工程と、突合せ工程と、補助部材配置工程と、タブ材配置工程と、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 manufacturing method of the cylindrical member which concerns on 2nd embodiment of this invention is demonstrated. In the manufacturing method of the cylindrical member according to the second embodiment, the arrangement position of the auxiliary member 10 is mainly different from the first embodiment. In the method for manufacturing a cylindrical member according to the second embodiment, a preparation process, a butting process, an auxiliary member arranging process, a tab material arranging process, a friction stirring process, and a removing process are performed. In the second embodiment, the description will focus on the parts that are different from the first embodiment.

準備工程及び突合せ工程は、第一実施形態と同一であるため、説明を省略する。補助部材配置工程は、図８に示すように、円筒状被接合部材１Ａに補助部材１０を配置する工程である。補助部材配置工程では、接合中心線Ｘ（突合せ部Ｊ１を通る鉛直線）を境にして、補助部材１０の裏面１０ｂと円筒状被接合部材１Ａとの接触面積が異なるように配置する。つまり、補助部材配置工程では、補助部材１０の裏面１０ｂと円筒状被接合部材１Ａとの接触面積が、他方側（接合中心線Ｘよりも左側）に比べて、一方側の方が大きくなるように配置する。言い換えると、補助部材配置工程では、補助部材１０の端面１０ｃが、接合中心線Ｘに対して、他方側（接合中心線Ｘよりも左側）にわずかに突出するように配置する。接合中心線Ｘから補助部材１０の端面１０ｃまでの距離は、後記する摩擦攪拌工程の後に、接合部（塑性化領域Ｗ）に金属不足が発生せず、かつ、他方側に補助部材１０が残存しない程度に設定することが好ましい。タブ部材配置工程は、第一実施形態と同一であるため説明を省略する。   Since the preparation process and the matching process are the same as those in the first embodiment, description thereof is omitted. The auxiliary member arranging step is a step of arranging the auxiliary member 10 on the cylindrical member 1A as shown in FIG. In the auxiliary member arranging step, the arrangement is made such that the contact area between the back surface 10b of the auxiliary member 10 and the cylindrical joined member 1A is different with respect to the joining center line X (vertical line passing through the butted portion J1). That is, in the auxiliary member arranging step, the contact area between the back surface 10b of the auxiliary member 10 and the cylindrical member 1A to be joined is larger on one side than on the other side (left side of the joining center line X). To place. In other words, in the auxiliary member arranging step, the end surface 10c of the auxiliary member 10 is arranged so as to slightly protrude with respect to the joining center line X to the other side (left side of the joining center line X). The distance from the joining center line X to the end face 10c of the auxiliary member 10 is such that no metal shortage occurs in the joining portion (plasticization region W) and the auxiliary member 10 remains on the other side after the friction stirring step described later. It is preferable to set it to such an extent that it does not occur. Since the tab member arranging step is the same as that in the first embodiment, the description thereof is omitted.

摩擦攪拌工程では、図９に示すように、接合用回転ツールＦを用いて突合せ部Ｊ１を摩擦攪拌接合する工程である。摩擦攪拌工程では、接合中心線Ｘと接合用回転ツールＦの回転中心軸Ｃとが重なるようにして、右回転させた接合用回転ツールＦを相対移動させる。本実施形態では、図９の紙面手前側から奥側に向けて接合用回転ツールＦを相対移動させる。   In the friction stirring step, as shown in FIG. 9, the butt joint J1 is friction stir welded using the welding rotary tool F. In the friction stirring step, the welding rotation tool F rotated to the right is relatively moved so that the bonding center line X and the rotation center axis C of the bonding rotation tool F overlap. In the present embodiment, the bonding rotary tool F is relatively moved from the front side to the back side in FIG.

つまり、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）が他方側（接合中心線Ｘよりも左側）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。   That is, in this embodiment, the shear side (advancing side: the side where the moving speed of the rotating tool is added to the tangential speed on the outer periphery of the rotating tool) is the other side (the left side of the connecting center line X). The movement direction and the rotation direction of the welding rotary tool F are set so that 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Ｗ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Ｗ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 W. 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 the burr V increases on the flow side outside the plasticizing region W because the rotational speed is fast. 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９に示すように、塑性化領域Ｗ外のフロー側にバリＶが多く発生する傾向にある。つまり、一方側（接合中心線Ｘに対して補助部材１０が円筒状被接合部材１Ａと多く面接触している側）の補助部材１０にバリＶを集約させることができる。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, there is a tendency that many burrs V are generated on the flow side outside the plasticizing region W as shown in FIG. In other words, the burrs V can be concentrated on the auxiliary member 10 on one side (the side on which the auxiliary member 10 is in surface contact with the cylindrical member 1A with respect to the bonding center line X). 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、移動速度（送り速度）、攪拌ピンＦ２の傾斜角度（テーパー角度）、円筒状被接合部材１Ａ及び補助部材１０の材質、補助部材１０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、接合中心線Ｘに対して補助部材１０が円筒状被接合部材１Ａと多く面接触している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, rotational direction, moving speed (feeding speed) of the rotating tool F for joining, the inclination angle (taper angle) of the stirring pin F2, the material of the cylindrical joined member 1A and the auxiliary member 10, and auxiliary It is determined by each element such as the thickness of the member 10 and a combination of these elements. Depending on the joining conditions, the side where the burr V is generated or the side where a lot of burr V is generated is the side where the auxiliary member 10 is in surface contact with the cylindrical joined member 1A with respect to the joining center line X. If set, it is preferable because the removal step described later can be easily performed.

除去工程は、図１０に示すように、円筒状被接合部材１Ａの外周面から補助部材１０を除去する工程である。除去工程では、接合中心線Ｘを挟んで一方側に残存する補助部材１０を折り曲げるようにして、切除する。除去工程は、切削装置等を用いてもよいが、本実施形態では手作業で行っている。   The removing step is a step of removing the auxiliary member 10 from the outer peripheral surface of the cylindrical member 1A as shown in FIG. In the removing step, the auxiliary member 10 remaining on one side across the joint center line X is cut and bent. In the removal process, a cutting device or the like may be used, but in this embodiment, the removal process is performed manually.

第二実施形態に係る円筒状部材の製造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、摩擦攪拌工程において残存する補助部材１０にバリＶを集約することができるため、除去工程ではバリＶを補助部材１０ごと容易に除去することができる。また、第二実施形態では、接合中心線Ｘに対して他方側にわずかに突出させるようにして補助部材１０を配置しているため、接合部（塑性化領域Ｗ）をバランス良く接合することができるとともに、接合中心線Ｘに対して片側のみに残存する補助部材１０を除去すればよいため、除去工程をより容易に行うことができる。   The manufacturing method of the cylindrical member according to the second embodiment can provide substantially the same effect as that of the first embodiment. Further, since the burrs V can be collected on the remaining auxiliary members 10 in the friction stirring step, the burrs V can be easily removed together with the auxiliary members 10 in the removal step. In the second embodiment, since the auxiliary member 10 is disposed so as to slightly protrude to the other side with respect to the bonding center line X, the bonding portion (plasticization region W) can be bonded with a good balance. In addition, since the auxiliary member 10 remaining only on one side with respect to the bonding center line X may be removed, the removing process can be performed more easily.

以上本発明の円筒状部材の製造方法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。例えば、突合せ工程では、端面１ａ，１ｂを突き合わせた際に断面Ｖ字状の隙間Ｓが形成されないように、端面１ａ，１ｂを斜めにカットしてもよい。また、本実施形態では、接合中心線Ｘを挟んで両側において補助部材１０と円筒状被接合部材１Ａとが接触するように補助部材１０を配置したが、接合中心線Ｘに対して片側のみにおいて円筒状被接合部材１Ａと補助部材１０とが接触するように補助部材１０を配置してもよい。また、タブ材配置工程は、省略してもよい。   Although the manufacturing method of the cylindrical member of the present invention has been described above, design changes can be made as appropriate without departing from the spirit of the present invention. For example, in the butting step, the end surfaces 1a and 1b may be cut obliquely so that the gap S having a V-shaped cross section is not formed when the end surfaces 1a and 1b are butted. Further, in the present embodiment, the auxiliary member 10 is arranged so that the auxiliary member 10 and the cylindrical member 1A are in contact with each other across the bonding center line X, but only on one side with respect to the bonding center line X. The auxiliary member 10 may be arranged so that the cylindrical member 1A and the auxiliary member 10 are in contact with each other. Further, the tab material arranging step may be omitted.

１ 金属板
１Ａ 円筒状被接合部材
１０ 補助部材
Ｆ 接合用回転ツール（回転ツール）
Ｆ１ 連結部
Ｆ２ 攪拌ピン
Ｊ１ 突合せ部
Ｋ 裏当て治具
Ｋ１ 曲面部
Ｖ バリ
Ｗ 塑性化領域 DESCRIPTION OF SYMBOLS 1 Metal plate 1A Cylindrical to-be-joined member 10 Auxiliary member F Joining rotary tool (rotary tool)
F1 connecting part F2 stirring pin J1 butt part K backing jig K1 curved surface part V burr W plasticizing region

Claims (4)

攪拌ピンを備えた回転ツールを用いて円筒状部材を製造する方法であって、
平板状の金属板を丸めて円筒状被接合部材を形成するとともに、端面同士を突き合わせて突合せ部を形成する突合せ工程と、
裏当て治具に形成された曲面部を、前記突合せ部の内周面側に配置するとともに、前記突合せ部の外周面側に前記円筒状被接合部材に沿うように補助部材を配置する補助部材配置工程と、
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円筒状被接合部材及び前記補助部材に接触させた状態で、前記突合せ部に沿って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円筒状部材の製造方法。 A method of manufacturing a cylindrical member using a rotary tool equipped with a stirring pin,
A flattened metal plate is rounded to form a cylindrical member to be joined, and end faces are butted together to form a butted portion; and
An auxiliary member that arranges the curved surface portion formed on the backing jig on the inner peripheral surface side of the abutting portion and arranges an auxiliary member on the outer peripheral surface side of the abutting portion so as to follow the cylindrical member to be joined. The placement process;
The rotating tool is relatively moved along the abutting portion while the rotating stirring pin is inserted from the surface side of the auxiliary member and only the stirring pin is in contact with the cylindrical member to be joined and the auxiliary member. And a friction stir process for friction stir welding the butt portion. バリが形成された前記補助部材を前記円筒状被接合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に記載の円筒状部材の製造方法。   The method for manufacturing a cylindrical member according to claim 1, further comprising a removing step of removing the auxiliary member on which the burr is formed from the cylindrical member to be joined. 前記摩擦攪拌工程では、摩擦攪拌接合で発生するバリが前記補助部材に形成され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に記載の円筒状部材の製造方法。   3. The method for manufacturing a cylindrical member according to claim 2, wherein in the friction stirring step, a joining condition is set so that burrs generated in the friction stir welding are formed in the auxiliary member. 前記補助部材配置工程では、前記補助部材を前記突合せ部を挟んで一方側に配置しつつ、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程度に他方側にわずかに突出するように配置し、
前記摩擦攪拌工程では、摩擦攪拌接合で発生するバリが、前記一方側の前記補助部材に形成され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に記載の円筒状部材の製造方法。 In the auxiliary member arranging step, the auxiliary member is arranged on one side with the butting portion interposed therebetween, and is arranged so as to slightly protrude on the other side so that the auxiliary member does not remain on the other side after the friction stirring step. And
3. The method for manufacturing a cylindrical member according to claim 2, wherein in the friction stirring step, the joining condition is set so that burrs generated in the friction stir welding are formed in the auxiliary member on the one side. .
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11267858A (en) * 1998-03-17 1999-10-05 Sumitomo Light Metal Ind Ltd Friction jointing member and its jointing method, and jointing panel
JP2005028448A (en) * 2003-06-17 2005-02-03 Honda Motor Co Ltd Device for friction stir joining
JP2013252537A (en) * 2012-06-06 2013-12-19 Isel Co Ltd Backing member for friction agitation processing, friction agitation processing method and friction agitation processing device
JP2015213928A (en) * 2014-05-08 2015-12-03 日本軽金属株式会社 Friction-agitation joint method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11267858A (en) * 1998-03-17 1999-10-05 Sumitomo Light Metal Ind Ltd Friction jointing member and its jointing method, and jointing panel
JP2005028448A (en) * 2003-06-17 2005-02-03 Honda Motor Co Ltd Device for friction stir joining
JP2013252537A (en) * 2012-06-06 2013-12-19 Isel Co Ltd Backing member for friction agitation processing, friction agitation processing method and friction agitation processing device
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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