JP7163866B2 - Hollow container manufacturing method - Google Patents

Hollow container manufacturing method Download PDF

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JP7163866B2
JP7163866B2 JP2019093483A JP2019093483A JP7163866B2 JP 7163866 B2 JP7163866 B2 JP 7163866B2 JP 2019093483 A JP2019093483 A JP 2019093483A JP 2019093483 A JP2019093483 A JP 2019093483A JP 7163866 B2 JP7163866 B2 JP 7163866B2
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metal member
peripheral wall
auxiliary
auxiliary member
metal
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JP2020185605A (en
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伸城 瀬尾
恵太 及川
諒 吉田
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Nippon Light Metal Co Ltd
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Nippon Light Metal Co Ltd
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Priority to JP2019093483A priority Critical patent/JP7163866B2/en
Priority to CN202080031284.4A priority patent/CN113727803A/en
Priority to US17/611,864 priority patent/US20220226927A1/en
Priority to EP20809380.7A priority patent/EP3957431A4/en
Priority to PCT/JP2020/004920 priority patent/WO2020235149A1/en
Priority to KR1020217033714A priority patent/KR102631734B1/en
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Description

本発明は、中空容器の製造方法に関する。 The present invention relates to a method for manufacturing hollow containers.

例えば、特許文献１には、一対の板状の金属部材を回転ツールを用いて摩擦攪拌接合する発明が開示されている。当該発明では、一対の金属部材の間に金属部材よりも軟質の補助部材を介設し、当該補助部材に回転ツールを挿入して摩擦攪拌を行うというものである。硬度の高い金属部材同士を摩擦攪拌接合すると、回転ツールの損傷が激しく、工具コストが増加するという問題がある。しかし、当該発明によれば、軟質の補助部材に回転ツールを挿入して摩擦攪拌を行うため、硬度の高い金属部材同士を好適に接合することができる。 For example, Patent Literature 1 discloses an invention in which a pair of plate-like metal members are friction stir welded using a rotating tool. In the invention, an auxiliary member softer than the metal member is interposed between a pair of metal members, and a rotary tool is inserted into the auxiliary member to perform friction stir. When metal members having high hardness are friction stir welded together, there is a problem that the rotary tool is severely damaged and the tool cost increases. However, according to the invention, since friction stir is performed by inserting a rotating tool into a soft auxiliary member, it is possible to suitably join metal members with high hardness.

特開２００７－８３２４２号公報JP-A-2007-83242

従来の接合方法では、回転ツールの攪拌ピンが円柱状を呈するため、補助部材への挿入が困難となるという問題があった。また、回転ツールのショルダ部を金属部材に接触させた状態で摩擦攪拌を行うため、摩擦攪拌装置に作用する負荷が大きくなるという問題があった。 In the conventional joining method, since the stirring pin of the rotating tool has a cylindrical shape, there is a problem that it is difficult to insert it into the auxiliary member. Moreover, since the friction stir is performed while the shoulder portion of the rotary tool is in contact with the metal member, there is a problem that the load acting on the friction stir device increases.

このような観点から、本発明は、硬度が高い金属部材同士を好適に接合することができる接合方法を用いた中空容器の製造方法を提供することを課題とする。 From such a point of view, an object of the present invention is to provide a method for manufacturing a hollow container using a joining method capable of suitably joining metal members having high hardness.

前記課題を解決するため、本発明は、先細りの攪拌ピンを備えた回転ツールを用いて中空容器を製造する製造方法であって、底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第一金属部材と、底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第二金属部材と、枠状の補助部材と、を準備する準備工程と、前記第一金属部材の周壁部の端面と前記第二金属部材の周壁部の端面とを向き合せて、前記端面同士の隙間に前記補助部材を挟みこみ、前記第一金属部材の周壁部の端面と前記補助部材の一方の側面とを突合せて第一突合せ部を形成し、前記第二金属部材の周壁部の端面と前記補助部材の他方の側面とを突合せて第二突合せ部を形成する突合せ工程と、回転する前記回転ツールを前記補助部材の表面のみから挿入するとともに、前記攪拌ピンのみを前記補助部材に接触させつつ、前記攪拌ピンの外周面を前記第一金属部材及び前記第二金属部材に僅か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に沿って前記回転ツールを相対移動させて前記第一金属部材と前記第二金属部材とを補助部材を介して接合する接合工程と、を含み、前記第一金属部材、前記第二金属部材及び前記補助部材は、アルミニウム又はアルミニウム合金から形成され、前記第一金属部材及び前記第二金属部材は前記補助部材よりも硬度が高く、前記第一金属部材及び前記第二金属部材のうち少なくとも一方は、前記周壁部の端面が外側に向けて傾斜する傾斜面を備え、前記補助部材は、少なくとも一方の側面に表面側から裏面側に向けて先細りとなる傾斜面を備えることを特徴とする。 In order to solve the above-mentioned problems, the present invention provides a manufacturing method for manufacturing a hollow container using a rotary tool equipped with a tapered stirring pin, comprising a recess having a bottom and a peripheral wall rising from the peripheral edge of the bottom. a first metal member having a first metal member, a second metal member having a recess having a bottom portion and a peripheral wall portion rising from the peripheral edge portion of the bottom portion, and a frame-shaped auxiliary member; a preparation step of preparing the first metal member; The end surface of the peripheral wall portion and the end surface of the peripheral wall portion of the second metal member are opposed to each other, and the auxiliary member is sandwiched between the end surfaces to form an end surface of the peripheral wall portion of the first metal member and one of the auxiliary members. a butting step of forming a first butting portion by abutting the side surface of the second metal member and forming a second abutting portion by abutting the end surface of the peripheral wall portion of the second metal member and the other side surface of the auxiliary member; A rotating tool is inserted only from the surface of the auxiliary member, and while only the stirring pin is brought into contact with the auxiliary member, the outer peripheral surface of the stirring pin is brought into slight contact with the first metal member and the second metal member. a joining step of joining the first metal member and the second metal member via an auxiliary member by relatively moving the rotating tool along the first butt portion and the second butt portion in the state of being joined; wherein the first metal member, the second metal member and the auxiliary member are made of aluminum or an aluminum alloy, the first metal member and the second metal member have higher hardness than the auxiliary member, and the At least one of the first metal member and the second metal member has an inclined surface in which the end surface of the peripheral wall portion is inclined outward, and the auxiliary member is provided on at least one side surface from the front surface side to the back surface side. It is characterized by having an inclined surface that tapers toward the bottom.

また、本発明は、先細りの攪拌ピンを備えた回転ツールを用いて中空容器を製造する製造方法であって、底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第一金属部材と、底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第二金属部材と、枠状の補助部材と、を準備する準備工程と、前記第一金属部材の周壁部の端面と前記第二金属部材の周壁部の端面とを向き合せて、前記端面同士の隙間に前記補助部材を挟みこみ、前記第一金属部材の周壁部の端面と前記補助部材の一方の側面とを突合せて第一突合せ部を形成し、前記第二金属部材の周壁部の端面と前記補助部材の他方の側面とを突合せて第二突合せ部を形成する突合せ工程と、回転する前記回転ツールを前記補助部材の表面のみから挿入するとともに、前記攪拌ピンのみを前記補助部材に接触させつつ、前記攪拌ピンの外周面を前記第一金属部材及び前記第二金属部材に僅か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に沿って前記回転ツールを相対移動させて前記第一金属部材と前記第二金属部材とを補助部材を介して接合する接合工程と、を含み、前記第一金属部材、前記第二金属部材及び前記補助部材は、アルミニウム又はアルミニウム合金から形成され、前記第一金属部材及び前記第二金属部材は前記補助部材よりも硬度が高く、前記第一金属部材及び前記第二金属部材は、前記周壁部の端面が外側に向けて傾斜する傾斜面を備え、前記補助部材は、両方の側面に表面側から裏面側に向けて先細りとなる傾斜面を備えることを特徴とする。 Further, the present invention is a manufacturing method for manufacturing a hollow container using a rotary tool having a tapered stirring pin, wherein the first metal member has a concave portion having a bottom portion and a peripheral wall portion rising from the peripheral edge portion of the bottom portion. a preparation step of preparing a bottom, a second metal member having a recess provided with a peripheral wall rising from the peripheral edge of the bottom, and a frame-shaped auxiliary member; and an end surface of the peripheral wall of the first metal member. With the end face of the peripheral wall portion of the second metal member facing each other, the auxiliary member is sandwiched between the end faces, and the end face of the peripheral wall portion of the first metal member and one side surface of the auxiliary member are butted. a butting step of forming a first butting portion by pressing the second butting portion, and abutting the end surface of the peripheral wall portion of the second metal member and the other side surface of the auxiliary member to form a second butting portion; While inserting only the surface of the member, while only the stirring pin is in contact with the auxiliary member, the outer peripheral surface of the stirring pin is slightly in contact with the first metal member and the second metal member. a joining step of joining the first metal member and the second metal member via an auxiliary member by relatively moving the rotating tool along the first butt portion and the second butt portion; The first metal member, the second metal member and the auxiliary member are made of aluminum or an aluminum alloy, the first metal member and the second metal member have higher hardness than the auxiliary member, and the first metal member and The second metal member is provided with an inclined surface in which the end surface of the peripheral wall portion is inclined outward, and the auxiliary member is provided with inclined surfaces on both side surfaces that taper from the surface side to the back side. Characterized by

また、本発明は、先細りの攪拌ピンを備えた回転ツールを用いて中空容器を製造する製造方法であって、底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第一金属部材と、底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第二金属部材と、枠状の補助部材と、を準備する準備工程と、前記第一金属部材の周壁部の端面と前記第二金属部材の周壁部の端面とを向き合せて、前記端面同士の隙間に前記補助部材を挟みこみ、前記第一金属部材の周壁部の端面と前記補助部材の一方の側面とを突合せて第一突合せ部を形成し、前記第二金属部材の周壁部の端面と前記補助部材の他方の側面とを突合せて第二突合せ部を形成する突合せ工程と、回転する前記回転ツールを前記補助部材の表面のみから挿入するとともに、前記攪拌ピンのみを前記補助部材に接触させつつ、前記攪拌ピンの外周面を前記第一金属部材及び前記第二金属部材に僅か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に沿って前記回転ツールを相対移動させて前記第一金属部材と前記第二金属部材とを補助部材を介して接合する接合工程と、を含み、前記第一金属部材、前記第二金属部材及び前記補助部材は、アルミニウム又はアルミニウム合金から形成され、前記第一金属部材及び前記第二金属部材は前記補助部材よりも硬度が高く、前記第一金属部材及び前記第二金属部材のうち少なくとも一方は、前記周壁部の端面が外側に向けて傾斜する傾斜面を備え、前記補助部材は、少なくとも一方の側面に表面側から裏面側に向けて先細りとなる傾斜面を備えるとともに、裏面側に少なくとも一方の側面側に向けて広がる突起部を備えることを特徴とする。 Further, the present invention is a manufacturing method for manufacturing a hollow container using a rotary tool having a tapered stirring pin, wherein the first metal member has a concave portion having a bottom portion and a peripheral wall portion rising from the peripheral edge portion of the bottom portion. a preparation step of preparing a bottom, a second metal member having a recess provided with a peripheral wall rising from the peripheral edge of the bottom, and a frame-shaped auxiliary member; and an end surface of the peripheral wall of the first metal member. With the end face of the peripheral wall portion of the second metal member facing each other, the auxiliary member is sandwiched between the end faces, and the end face of the peripheral wall portion of the first metal member and one side surface of the auxiliary member are butted. a butting step of forming a first butting portion by pressing the second butting portion, and abutting the end surface of the peripheral wall portion of the second metal member and the other side surface of the auxiliary member to form a second butting portion; While inserting only the surface of the member, while only the stirring pin is in contact with the auxiliary member, the outer peripheral surface of the stirring pin is slightly in contact with the first metal member and the second metal member. a joining step of joining the first metal member and the second metal member via an auxiliary member by relatively moving the rotating tool along the first butt portion and the second butt portion; The first metal member, the second metal member and the auxiliary member are made of aluminum or an aluminum alloy, the first metal member and the second metal member have higher hardness than the auxiliary member, and the first metal member and At least one of the second metal members has an inclined surface where the end surface of the peripheral wall portion is inclined outward, and the auxiliary member has at least one side surface tapered from the front surface side to the back surface side. It is characterized by having a surface and a protruding portion extending toward at least one of the side surfaces on the back side.

また、本発明は、先細りの攪拌ピンを備えた回転ツールを用いて中空容器を製造する製造方法であって、底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第一金属部材と、底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第二金属部材と、枠状の補助部材と、を準備する準備工程と、前記第一金属部材の周壁部の端面と前記第二金属部材の周壁部の端面とを向き合せて、前記端面同士の隙間に前記補助部材を挟みこみ、前記第一金属部材の周壁部の端面と前記補助部材の一方の側面とを突合せて第一突合せ部を形成し、前記第二金属部材の周壁部の端面と前記補助部材の他方の側面とを突合せて第二突合せ部を形成する突合せ工程と、回転する前記回転ツールを前記補助部材の表面のみから挿入するとともに、前記攪拌ピンのみを前記補助部材に接触させつつ、前記攪拌ピンの外周面を前記第一金属部材及び前記第二金属部材に僅か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に沿って前記回転ツールを相対移動させて前記第一金属部材と前記第二金属部材とを補助部材を介して接合する接合工程と、を含み、前記第一金属部材、前記第二金属部材及び前記補助部材は、アルミニウム又はアルミニウム合金から形成され、前記第一金属部材及び前記第二金属部材は前記補助部材よりも硬度が高く、前記第一金属部材及び前記第二金属部材は、前記周壁部の端面が外側に向けて傾斜する傾斜面を備え、前記補助部材は、両方の側面に表面側から裏面側に向けて先細りとなる傾斜面を備えるとともに、裏面側に少なくとも一方の側面側に向けて広がる突起部を備えることを特徴とする。 Further, the present invention is a manufacturing method for manufacturing a hollow container using a rotary tool having a tapered stirring pin, wherein the first metal member has a concave portion having a bottom portion and a peripheral wall portion rising from the peripheral edge portion of the bottom portion. a preparation step of preparing a bottom, a second metal member having a recess provided with a peripheral wall rising from the peripheral edge of the bottom, and a frame-shaped auxiliary member; and an end surface of the peripheral wall of the first metal member. With the end face of the peripheral wall portion of the second metal member facing each other, the auxiliary member is sandwiched between the end faces, and the end face of the peripheral wall portion of the first metal member and one side surface of the auxiliary member are butted. a butting step of forming a first butting portion by pressing the second butting portion, and abutting the end surface of the peripheral wall portion of the second metal member and the other side surface of the auxiliary member to form a second butting portion; While inserting only the surface of the member, while only the stirring pin is in contact with the auxiliary member, the outer peripheral surface of the stirring pin is slightly in contact with the first metal member and the second metal member. a joining step of joining the first metal member and the second metal member via an auxiliary member by relatively moving the rotating tool along the first butt portion and the second butt portion; The first metal member, the second metal member and the auxiliary member are made of aluminum or an aluminum alloy, the first metal member and the second metal member have higher hardness than the auxiliary member, and the first metal member and The second metal member has an inclined surface in which the end surface of the peripheral wall portion is inclined outward, and the auxiliary member has inclined surfaces on both side surfaces that taper from the front surface side to the back surface side, It is characterized by having a protrusion that spreads toward at least one of the side surfaces on the back side.

かかる中空容器の製造方法によれば、先細りの攪拌ピンを備えた回転ツールを用いるため、補助部材に容易に挿入することができる。また、攪拌ピンのみを補助部材に挿入するため、摩擦攪拌装置に作用する負荷を軽減することができる。また、第一金属部材及び第二金属部材よりも軟質の補助部材に回転ツールを挿入するため、回転ツールの寿命を長くすることができる。また、攪拌ピンと第一金属部材及び第二金属部材とを僅かに接触させることにより接合強度を高めることができる。 According to the manufacturing method of such a hollow container, since the rotary tool having the tapered stirring pin is used, it can be easily inserted into the auxiliary member. Moreover, since only the stirring pin is inserted into the auxiliary member, the load acting on the friction stirrer can be reduced. Moreover, since the rotary tool is inserted into the auxiliary member which is softer than the first metal member and the second metal member, the service life of the rotary tool can be extended. Also, the bonding strength can be increased by slightly contacting the stirring pin with the first metal member and the second metal member.

また、前記補助部材の裏面側に少なくとも一方の側面側に向けて広がる突起部を設けた場合には、擦攪拌接合したときに補助部材の浮き上がりを防ぐことができる。これにより、第一金属部材及び第二金属部材に対する補助部材の位置ずれを防ぐことができるため、より好適に摩擦攪拌接合することができる。 Further, in the case where the back side of the auxiliary member is provided with a protruding portion that spreads toward at least one side surface side, the auxiliary member can be prevented from being lifted up when friction stir welding is performed. As a result, it is possible to prevent the positional deviation of the auxiliary member with respect to the first metal member and the second metal member, so that the friction stir welding can be performed more preferably.

また、前記接合工程において、前記回転ツールを前記第一金属部材及び前記第二金属部材の周壁部の外周面を一周させることが望ましい。この構成では、中空容器の密閉性を高めることができる。 Moreover, in the joining step, it is preferable that the rotary tool is rotated around the outer peripheral surfaces of the peripheral wall portions of the first metal member and the second metal member. With this configuration, the airtightness of the hollow container can be improved.

また、前記第一金属部材及び前記第二金属部材は鋳造材であり、前記補助部材は展伸材である場合には、鋳造材同士を好適に接合することができる。 Further, when the first metal member and the second metal member are cast materials and the auxiliary member is a wrought material, the cast materials can be suitably joined.

本発明に係る中空容器の製造方法によれば、硬度が高い金属部材同士を好適に接合して中空容器を形成することができる。 According to the method for manufacturing a hollow container according to the present invention, a hollow container can be formed by suitably joining metal members with high hardness.

本発明の第一実施形態に係る中空容器の製造方法の準備工程を示す斜視図である。FIG. 4 is a perspective view showing a preparatory step of the hollow container manufacturing method according to the first embodiment of the present invention; 第一実施形態に係る補助部材の加工前を示す斜視図である。FIG. 4 is a perspective view showing the auxiliary member before processing according to the first embodiment; 第一実施形態に係る中空容器の製造方法の突合せ工程を示す断面図である。FIG. 4 is a cross-sectional view showing a butting step in the hollow container manufacturing method according to the first embodiment; 第一実施形態に係る中空容器の製造方法の接合工程を示す断面図である。FIG. 4 is a cross-sectional view showing a joining step in the hollow container manufacturing method according to the first embodiment. 第一実施形態に係の中空容器る製造方法の接合工程を示す斜視図である。FIG. 4 is a perspective view showing a joining step in the hollow container manufacturing method according to the first embodiment; 本発明の第二実施形態に係る中空容器の製造方法の突合せ工程を示す断面図である。FIG. 4 is a cross-sectional view showing a butting step in the hollow container manufacturing method according to the second embodiment of the present invention; 本発明の第三実施形態に係る中空容器の製造方法の突合せ工程を示す断面図である。FIG. 10 is a cross-sectional view showing a butting step in the hollow container manufacturing method according to the third embodiment of the present invention; 第三実施形態に係る中空容器の製造方法の接合工程を示す断面図である。FIG. 10 is a cross-sectional view showing a joining step in the hollow container manufacturing method according to the third embodiment; 本発明の第四実施形態に係る中空容器の製造方法の準備工程を示す斜視図である。FIG. 11 is a perspective view showing a preparatory step of a hollow container manufacturing method according to a fourth embodiment of the present invention; 第四実施形態に係る中空容器の製造方法の接合工程を示す断面図である。FIG. 11 is a cross-sectional view showing a joining step in a method for manufacturing a hollow container according to the fourth embodiment; 第四実施形態に係る中空容器の製造方法の接合工程を示す斜視図である。FIG. 11 is a perspective view showing a joining step in a method for manufacturing a hollow container according to the fourth embodiment;

［第一実施形態］
本発明の第一実施形態について、適宜図面を参照しながら説明する。第一実施形態に係る中空容器の製造方法は、準備工程と、突合せ工程と、接合工程とを行う。図５に示すように、本実施形態では、第一金属部材１と第二金属部材２とを摩擦攪拌接合して中空容器１００を製造する。
以下の説明における「外面」とは、「内面」の反対側の面を言う。また、以下の説明における「外周面」とは、「内周面」の反対側の面を言う。また、「表面」とは、「裏面」の反対側の面を言う。 [First embodiment]
A first embodiment of the present invention will be described with reference to the drawings as appropriate. The hollow container manufacturing method according to the first embodiment includes a preparation step, a butting step, and a joining step. As shown in FIG. 5, in this embodiment, the first metal member 1 and the second metal member 2 are friction stir welded to manufacture the hollow container 100 .
The "outer surface" in the following description refers to the surface opposite to the "inner surface". Further, the "outer peripheral surface" in the following description refers to the surface opposite to the "inner peripheral surface". In addition, the "front surface" means the surface opposite to the "back surface".

図１に示すように、準備工程は、第一金属部材１、第二金属部材２及び補助部材１０を用意する工程である。
第一金属部材１及び第二金属部材２は、四角形の板状の金属部材である。第一金属部材１及び第二金属部材２の板厚は同一である。第一金属部材１及び第二金属部材２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、アルミニウム又はアルミニウム合金を用いる。第一金属部材１及び第二金属部材２は、本実施形態では、ＪＩＳＨ５３０２ ＡＤＣ１２（Ａｌ-Ｓｉ-Ｃｕ系）等のアルミニウム合金鋳造材を用いている。 As shown in FIG. 1, the preparation step is a step of preparing the first metal member 1, the second metal member 2 and the auxiliary member 10. As shown in FIG.
The first metal member 1 and the second metal member 2 are rectangular plate-shaped metal members. The plate thicknesses of the first metal member 1 and the second metal member 2 are the same. The first metal member 1 and the second metal member 2 are not particularly limited as long as they are metals that can be friction-stirred. For example, aluminum or an aluminum alloy is used. In this embodiment, the first metal member 1 and the second metal member 2 are made of an aluminum alloy cast material such as JISH5302 ADC12 (Al-Si-Cu system).

第一金属部材１の内面１ｃの中央部には、四角形の底部１ｄと、底部１ｄの周縁部から立ち上がる角筒状の周壁部１ｅと、を備えた凹部１ｆが形成されている。
第二金属部材２の内面２ｃの中央部には、四角形の底部２ｄと、底部２ｄの周縁部から立ち上がる角筒状の周壁部２ｅと、を備えた凹部２ｆが形成されている。 In the central portion of the inner surface 1c of the first metal member 1, there is formed a recess 1f having a rectangular bottom 1d and a rectangular cylindrical peripheral wall 1e rising from the peripheral edge of the bottom 1d.
In the central portion of the inner surface 2c of the second metal member 2, there is formed a recess 2f having a rectangular bottom portion 2d and a rectangular cylindrical peripheral wall portion 2e rising from the peripheral edge portion of the bottom portion 2d.

図３に示すように、第一金属部材１では、周壁部１ｅの端面１ａが外側（第二金属部材２の周壁部２ｅの端面２ａ側）に向けて傾斜する傾斜面になっている。第二金属部材２では、周壁部２ｅの端面２ａが外側（第一金属部材１の周壁部１ｅの端面１ａ側）に向けて傾斜する傾斜面になっている。
このように、端面１ａ及び端面２ａは、周壁部１ｅ，２ｅの内周面１ｈ，２ｈから外周面１ｇ，２ｇに向かうにつれて互いに離間するように傾斜した傾斜面になっている。周壁部１ｅの外周面１ｇに直交する仮想直交面に対して、端面１ａ，２ａの傾斜角度は同一になっている。 As shown in FIG. 3, in the first metal member 1, the end surface 1a of the peripheral wall portion 1e is an inclined surface that slopes outward (toward the end surface 2a of the peripheral wall portion 2e of the second metal member 2). In the second metal member 2, the end surface 2a of the peripheral wall portion 2e is an inclined surface that slopes outward (toward the end surface 1a of the peripheral wall portion 1e of the first metal member 1).
Thus, the end face 1a and the end face 2a are slanted surfaces that are inclined away from each other from the inner peripheral surfaces 1h, 2h of the peripheral wall portions 1e, 2e toward the outer peripheral surfaces 1g, 2g. The inclination angles of the end surfaces 1a and 2a are the same with respect to a virtual orthogonal plane orthogonal to the outer peripheral surface 1g of the peripheral wall portion 1e.

図１に示すように、補助部材１０は、第一金属部材１と第二金属部材２との間に介設される略四角形の枠状の部材である。補助部材１０は、第一金属部材１よりも硬度の低い金属で形成されている。補助部材１０は、例えば、ＪＩＳ Ａ１０５０，Ａ１１００，Ａ６０６３等のアルミニウム合金展伸材で形成されている。 As shown in FIG. 1 , the auxiliary member 10 is a substantially rectangular frame-shaped member interposed between the first metal member 1 and the second metal member 2 . The auxiliary member 10 is made of a metal having a hardness lower than that of the first metal member 1 . The auxiliary member 10 is made of, for example, an aluminum alloy wrought material such as JIS A1050, A1100, A6063.

補助部材１０は、図２に示すように、断面略台形を呈する押出材である長尺部材１５から形成されている。長尺部材１５において補助部材１０（図３参照）の内周側となる面には、四つの切り欠き１５ａが長手方向に間隔を空けて形成されている。そして、各切り欠き１５ａにおいて長尺部材１５を直角に折り曲げるとともに、長尺部材１５の両端部を突き合わせることで、図１に示すように、四角形の枠状の補助部材１０が形成されている。なお、枠状の補助部材１０は、例えば、ダイキャストで形成してもよい。 As shown in FIG. 2, the auxiliary member 10 is formed from an elongated member 15 which is an extruded material having a substantially trapezoidal cross section. Four notches 15a are formed at intervals in the longitudinal direction on the surface of the elongated member 15 which is the inner peripheral side of the auxiliary member 10 (see FIG. 3). The elongated member 15 is bent at right angles at each notch 15a, and both ends of the elongated member 15 are butted against each other, thereby forming the quadrangular frame-shaped auxiliary member 10 as shown in FIG. . The frame-shaped auxiliary member 10 may be formed by die casting, for example.

図３に示すように、補助部材１０は、断面台形状の本体部１１と、本体部１１の内周面１０ｄから内側に突出した突起部１２と、を備えている。
本体部１１は、外周面（表面）１０ａと、側面１０ｂ，１０ｃと、内周面（裏面）１０ｄを備えている。側面１０ｂ，１０ｃは、外周面１０ａから離間するにつれて（内周面１０ｄに向かうにつれて）互いに近接する傾斜面になっている。つまり、補助部材１０の側面１０ｂ，１０ｃは、外周面１０ａ側から内周面１０ｄ側に向けて先細りとなる傾斜面になっている。側面１０ｂ，１０ｃの傾斜角度は、それぞれ対向する端面１ａ，２ａの傾斜角度と同一になっている。
突起部１２は、本体部１１の内周面（裏面）１０ｄよりも幅広となる断面矩形状を呈する。突起部１２は、補助部材１０の周方向に一定の形状で形成されている。 As shown in FIG. 3 , the auxiliary member 10 includes a body portion 11 having a trapezoidal cross section and projections 12 projecting inwardly from an inner peripheral surface 10 d of the body portion 11 .
The body portion 11 includes an outer peripheral surface (front surface) 10a, side surfaces 10b and 10c, and an inner peripheral surface (back surface) 10d. The side surfaces 10b and 10c are inclined surfaces that approach each other as they separate from the outer peripheral surface 10a (toward the inner peripheral surface 10d). That is, the side surfaces 10b and 10c of the auxiliary member 10 are inclined surfaces that taper from the outer peripheral surface 10a toward the inner peripheral surface 10d. The inclination angles of the side surfaces 10b and 10c are the same as the inclination angles of the opposing end surfaces 1a and 2a.
The projecting portion 12 has a rectangular cross-sectional shape that is wider than the inner peripheral surface (rear surface) 10 d of the main body portion 11 . The projecting portion 12 is formed in a constant shape in the circumferential direction of the auxiliary member 10 .

突合せ工程は、図３に示すように、第一金属部材１、第二金属部材２及び補助部材１０を突き合わせる工程である。突合せ工程では、第一金属部材１の端面１ａと、第二金属部材２の端面２ａとを向き合せて配置する。さらに、端面１ａ，２ａ同士の間に補助部材１０を配置し、端面１ａ，２ａ同士の間の隙間に補助部材１０を挟み込む。
第一金属部材１の端面１ａと、補助部材１０の側面１０ｂとが概ね面接触するように突き合わされて突合せ部Ｊ１が形成される。第二金属部材２の端面２ａと、補助部材１０の側面１０ｃとが概ね面接触するように突き合わされて突合せ部Ｊ２が形成される。補助部材１０の外周面（表面）１０ａは、第一金属部材１の外周面１ｇ及び第二金属部材２の外周面２ｇと面一になる。補助部材１０の内周面１０ｄは、第一金属部材１の内周面１ｈ及び第二金属部材２の内周面２ｈと面一になる。また、突起部１２は、第一金属部材１の内周面１ｈ及び第二金属部材２の内周面２ｈにそれぞれ係止される。 The butting step is a step of butting the first metal member 1, the second metal member 2 and the auxiliary member 10, as shown in FIG. In the butting step, the end surface 1a of the first metal member 1 and the end surface 2a of the second metal member 2 are arranged to face each other. Furthermore, the auxiliary member 10 is arranged between the end surfaces 1a and 2a, and the auxiliary member 10 is sandwiched between the end surfaces 1a and 2a.
The end surface 1a of the first metal member 1 and the side surface 10b of the auxiliary member 10 are butted together so as to be in general surface contact to form a butted portion J1. The end surface 2a of the second metal member 2 and the side surface 10c of the auxiliary member 10 are butted together so as to be in general surface contact to form a butting portion J2. An outer peripheral surface (surface) 10 a of the auxiliary member 10 is flush with the outer peripheral surface 1 g of the first metal member 1 and the outer peripheral surface 2 g of the second metal member 2 . The inner peripheral surface 10 d of the auxiliary member 10 is flush with the inner peripheral surface 1 h of the first metal member 1 and the inner peripheral surface 2 h of the second metal member 2 . Moreover, the protrusion 12 is engaged with the inner peripheral surface 1h of the first metal member 1 and the inner peripheral surface 2h of the second metal member 2, respectively.

ここで、図４に示すように回転ツールＦは、基部Ｆ１と、攪拌ピンＦ２とで構成されている。回転ツールＦは、例えば、工具鋼で形成されている。基部Ｆ１は、摩擦攪拌装置の回転軸に接続される部位である。攪拌ピンＦ２は、基部Ｆ１から垂下し、先細りとなっている。攪拌ピンＦ２の先端には、回転中心軸に対して垂直な平坦面Ｆ３が形成されている。平坦面Ｆ３は、補助部材１０の内周面（裏面）１０ｄよりもやや大きな寸法で形成されている。 Here, as shown in FIG. 4, the rotary tool F is composed of a base portion F1 and a stirring pin F2. The rotary tool F is made of tool steel, for example. The base F1 is a part connected to the rotating shaft of the friction stirrer. Stirring pin F2 depends from base F1 and is tapered. A flat surface F3 perpendicular to the central axis of rotation is formed at the tip of the stirring pin F2. The flat surface F3 is formed with a slightly larger dimension than the inner peripheral surface (rear surface) 10d of the auxiliary member 10. As shown in FIG.

攪拌ピンＦ２の外周面のテーパー角度は、第一金属部材１の端面１ａ及び第二金属部材２の端面２ａの各傾斜角度と同一になっている。つまり、攪拌ピンＦ２を側面から見た断面形状は、補助部材１０の本体部１１の断面形状と概ね同一になっている。 The taper angle of the outer peripheral surface of the stirring pin F2 is the same as the inclination angles of the end surface 1a of the first metal member 1 and the end surface 2a of the second metal member 2. As shown in FIG. That is, the cross-sectional shape of the stirring pin F2 viewed from the side is substantially the same as the cross-sectional shape of the main body portion 11 of the auxiliary member 10 .

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、回転ツールＦを右回転させるため、基端側から先端側に向かうにつれて螺旋溝が左回りで形成されている。なお、回転ツールＦを左回転させる場合は、基端側から先端側に向かうにつれて螺旋溝が右回りで形成されている。このようにすると、塑性流動化した金属が螺旋溝に導かれて先端側に移動するため、バリの発生を抑制することができる。回転ツールＦは、例えば、先端に回転駆動手段を備えたアームロボットに取り付けて使用することができる。 A spiral groove is engraved on the outer peripheral surface of the stirring pin F2. In this embodiment, since the rotary tool F is rotated rightward, the spiral groove is formed counterclockwise as it goes from the base end side to the tip end side. When the rotating tool F is rotated counterclockwise, the spiral groove is formed clockwise as it goes from the base end side to the tip end side. In this way, the plastically fluidized metal is guided by the spiral grooves and moves toward the tip side, so that the generation of burrs can be suppressed. The rotary tool F can be used, for example, by attaching it to an arm robot having rotary drive means at its tip.

接合工程は、図４に示すように、回転ツールＦを用いて第一金属部材１と第二金属部材２とを摩擦攪拌接合する工程である。接合工程では、右回転させた回転ツールＦの攪拌ピンＦ２を補助部材１０の本体部１１の外周面（表面）１０ａの幅方向中央に挿入する。
接合工程では、攪拌ピンＦ２の外周面を第一金属部材１の端面１ａ及び第二金属部材２の端面２ａに接触させなくてもよいが、本実施形態では攪拌ピンＦ２の外周面を両端面１ａ，２ａに僅かに接触させた状態で、補助部材１０に沿って相対移動させる。攪拌ピンＦ２の外周面と、両端面１ａ，２ａとの接触代は、例えば、１．０ｍｍ未満で適宜設定すればよい。 The joining step is a step of friction stir joining the first metal member 1 and the second metal member 2 using a rotary tool F, as shown in FIG. In the joining step, the stirring pin F2 of the rotating tool F rotated to the right is inserted into the center of the width direction of the outer peripheral surface (surface) 10a of the main body portion 11 of the auxiliary member 10. As shown in FIG.
In the joining step, the outer peripheral surface of the stirring pin F2 does not have to contact the end surface 1a of the first metal member 1 and the end surface 2a of the second metal member 2, but in this embodiment, the outer peripheral surface of the stirring pin F2 It is relatively moved along the auxiliary member 10 while being slightly in contact with 1a and 2a. The contact margin between the outer peripheral surface of the stirring pin F2 and both end surfaces 1a and 2a may be appropriately set at, for example, less than 1.0 mm.

接合工程では、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、攪拌ピンＦ２の基端側は、第一金属部材１及び第二金属部材２から露出した状態で摩擦攪拌を行う。攪拌ピンＦ２の平坦面Ｆ３は、第一金属部材１の内周面１ｈ及び第二金属部材２の内周面２ｈから突出しない範囲で深い位置まで挿入する。
図５に示すように、回転ツールＦを補助部材１０に沿って相対移動させ、回転ツールＦを第一金属部材１及び第二金属部材２の周壁部１ｅ，２ｅの外周面を一周させる。このとき、接合工程の始端と終端とをオーバラップさせつつ、終了位置に達したら回転ツールＦを補助部材１０から離脱させる。以上により、突合せ部Ｊ１，Ｊ２が一つの工程で同時に摩擦攪拌接合される。回転ツールＦの移動軌跡には塑性化領域Ｗが形成される。
第一金属部材１の周壁部１ｅと第二金属部材２の周壁部２ｅとを摩擦攪拌接合することで、第一金属部材１の凹部１ｆと第二金属部材２の凹部２ｆとが連結される。これにより、両凹部１ｆ，２ｆによって形成された内部空間を有する中空容器１００が形成される。 In the joining step, 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, and the base end side of the stirring pin F2 is exposed from the first metal member 1 and the second metal member 2. Friction stir is performed in this state. The flat surface F3 of the stirring pin F2 is inserted to a deep position within a range that does not protrude from the inner peripheral surface 1h of the first metal member 1 and the inner peripheral surface 2h of the second metal member 2.
As shown in FIG. 5, the rotary tool F is relatively moved along the auxiliary member 10, and the rotary tool F is made to go around the outer peripheral surfaces of the peripheral walls 1e and 2e of the first metal member 1 and the second metal member 2. As shown in FIG. At this time, the rotating tool F is separated from the auxiliary member 10 when the end position is reached while the starting end and the terminal end of the joining process are overlapped. As described above, the butted portions J1 and J2 are simultaneously friction stir welded in one step. A plasticized region W is formed in the movement trajectory of the rotating tool F. As shown in FIG.
By friction stir welding the peripheral wall portion 1e of the first metal member 1 and the peripheral wall portion 2e of the second metal member 2, the recess 1f of the first metal member 1 and the recess 2f of the second metal member 2 are connected. . As a result, a hollow container 100 having an internal space defined by both recesses 1f and 2f is formed.

以上説明した本実施形態に係る中空容器１００の製造方法によれば、図４に示すように、先細りの攪拌ピンＦ２を備えた回転ツールＦを用いるため、補助部材１０の外周面（表面）１０ａに容易に挿入することができる。また、攪拌ピンＦ２のみを補助部材１０に挿入し、攪拌ピンＦ２の基端側は露出させた状態で摩擦攪拌するため、摩擦攪拌装置に作用する負荷を軽減することができる。 According to the manufacturing method of the hollow container 100 according to the present embodiment described above, as shown in FIG. can be easily inserted into the Further, since only the stirring pin F2 is inserted into the auxiliary member 10 and the base end side of the stirring pin F2 is exposed, friction stirring is performed, so that the load acting on the friction stir device can be reduced.

また、第一金属部材１及び第二金属部材２よりも軟質の補助部材１０に回転ツールＦを挿入するため、回転ツールＦの寿命を長くすることができる。また、攪拌ピンＦ２と第一金属部材１及び第二金属部材２を僅かに接触させるに留めるため、第一金属部材１及び第二金属部材２の硬質の金属が補助部材１０側に多く混入するのを防ぐことができるため、より接合強度を高めることができる。 Moreover, since the rotary tool F is inserted into the auxiliary member 10 which is softer than the first metal member 1 and the second metal member 2, the life of the rotary tool F can be lengthened. In addition, since the stirring pin F2 and the first metal member 1 and the second metal member 2 are kept in contact with each other only slightly, a large amount of the hard metal of the first metal member 1 and the second metal member 2 is mixed into the auxiliary member 10 side. can be prevented, the bonding strength can be further increased.

また、第一金属部材１の端面１ａと第二金属部材２の端面２ａに傾斜面を設けているため、攪拌ピンＦ２と第一金属部材１及び第二金属部材２とが大きく接触するのを防ぐことができる。また、本実施形態では、攪拌ピンＦ２のテーパー角度と、端面１ａ，２ａの傾斜角度とを同一（概ね平行）にしているため、高さ方向に亘ってバランス良く摩擦攪拌することができる。 In addition, since the end surface 1a of the first metal member 1 and the end surface 2a of the second metal member 2 are provided with inclined surfaces, the agitation pin F2 and the first metal member 1 and the second metal member 2 are prevented from coming into large contact with each other. can be prevented. Further, in this embodiment, the taper angle of the stirring pin F2 and the inclination angle of the end faces 1a and 2a are set to be the same (substantially parallel), so friction stirring can be performed in a well-balanced manner over the height direction.

また、摩擦攪拌接合の接合長が長くなると、それに伴って補助部材１０も長く形成する。このような場合に摩擦攪拌接合を行うと、補助部材１０が浮き上がってしまうという問題がある。しかし、本実施形態によれば、補助部材１０に突起部１２を設けているため、突起部１２が内周面１ｈ，２ｈに係止され、補助部材１０の浮き上がりを防ぐことができる。これにより、第一金属部材１及び第二金属部材２に対する補助部材１０の位置ずれを防ぐことができるため、より好適に摩擦攪拌接合することができる。 Further, when the welding length of the friction stir welding becomes longer, the auxiliary member 10 is also formed longer accordingly. If friction stir welding is performed in such a case, there is a problem that the auxiliary member 10 is lifted. However, according to the present embodiment, since the projections 12 are provided on the auxiliary member 10, the projections 12 are engaged with the inner peripheral surfaces 1h and 2h, thereby preventing the auxiliary member 10 from floating. As a result, displacement of the auxiliary member 10 with respect to the first metal member 1 and the second metal member 2 can be prevented, so friction stir welding can be performed more favorably.

なお、本実施形態では、突起部１２が第一金属部材１及び第二金属部材２の両方に係止するように設定したが、補助部材１０が浮き上がらないように、第一金属部材１及び第二金属部材２の少なくとも一方に係止させてもよい。 In this embodiment, the protruding portion 12 is set to engage with both the first metal member 1 and the second metal member 2, but the first metal member 1 and the second metal member 10 should be At least one of the two metal members 2 may be engaged.

［第二実施形態］
次に、本発明の第二実施形態に係る中空容器の製造方法について説明する。図６は、本発明の第二実施形態に係る中空容器の製造方法の突合せ工程を示す断面図である。
第二実施形態に係る中空容器の製造方法は、準備工程と、突合せ工程と、接合工程とを行う。第二実施形態では、補助部材１０Ａの形状が第一実施形態と主に相違する。本実施形態では、第一実施形態と相違する部分を中心に説明する。 [Second embodiment]
Next, a method for manufacturing a hollow container according to the second embodiment of the present invention will be described. FIG. 6 is a cross-sectional view showing a butting step in the hollow container manufacturing method according to the second embodiment of the present invention.
A hollow container manufacturing method according to the second embodiment includes a preparation step, a butting step, and a joining step. The second embodiment mainly differs from the first embodiment in the shape of the auxiliary member 10A. In this embodiment, the description will focus on the parts that are different from the first embodiment.

図６に示すように、第一金属部材１及び第二金属部材２は第一実施形態と同一である。補助部材１０Ａは、断面台形状の本体部１１からなる。つまり、第二実施形態の補助部材１０Ａは、第一実施形態の補助部材１０（図３参照）の突起部１２がない構成である。 As shown in FIG. 6, the first metal member 1 and the second metal member 2 are the same as in the first embodiment. The auxiliary member 10A is composed of a main body portion 11 having a trapezoidal cross section. In other words, the auxiliary member 10A of the second embodiment does not have the protrusion 12 of the auxiliary member 10 (see FIG. 3) of the first embodiment.

突合せ工程では、第一実施形態と同様に、第一金属部材１及び第二金属部材２を補助部材１０Ａの両側から突き合わせる。第一金属部材１の端面１ａと、補助部材１０の側面１０ｂとが突き合わされて突合せ部Ｊ１が形成される。第二金属部材２の端面２ａと、補助部材１０の側面１０ｃとが突き合わされて突合せ部Ｊ２が形成される。
接合工程では、第一実施形態と同様に、回転ツールＦを用いて突合せ部Ｊ１，Ｊ２に対して摩擦攪拌接合を行う。 In the butting step, the first metal member 1 and the second metal member 2 are butted from both sides of the auxiliary member 10A, as in the first embodiment. The end surface 1a of the first metal member 1 and the side surface 10b of the auxiliary member 10 are butted together to form a butt portion J1. The end surface 2a of the second metal member 2 and the side surface 10c of the auxiliary member 10 are butted together to form a butting portion J2.
In the joining step, as in the first embodiment, the rotary tool F is used to perform friction stir welding on the butted portions J1 and J2.

以上説明した第二実施形態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、第二実施形態の補助部材１０Ａは、断面台形状であるため、補助部材１０Ａを押出成形材によって製造し易い。 Approximately the same effect as the first embodiment can be obtained by the second embodiment described above. In addition, since the auxiliary member 10A of the second embodiment has a trapezoidal cross section, the auxiliary member 10A can be easily manufactured from an extruded material.

［第三実施形態］
次に、本発明の第三実施形態に係る中空容器の製造方法について説明する。図７は、本発明の第三実施形態に係る中空容器の製造方法の突合せ工程を示す断面図である。図８は、本発明の第三実施形態に係る中空容器の製造方法の接合工程を示す断面図である。
第三実施形態に係る中空容器の製造方法では、準備工程と、突合せ工程と、接合工程とを行う。第三実施形態では、補助部材１０Ｂの形状が第一実施形態と主に相違する。本実施形態では、第一実施形態と相違する部分を中心に説明する。 [Third embodiment]
Next, a method for manufacturing a hollow container according to the third embodiment of the present invention will be described. FIG. 7 is a cross-sectional view showing a butting step in the hollow container manufacturing method according to the third embodiment of the present invention. FIG. 8 is a cross-sectional view showing a joining step in the hollow container manufacturing method according to the third embodiment of the present invention.
In the hollow container manufacturing method according to the third embodiment, a preparation step, a butting step, and a joining step are performed. The third embodiment mainly differs from the first embodiment in the shape of the auxiliary member 10B. In this embodiment, the description will focus on the parts that are different from the first embodiment.

準備工程では、第一金属部材１Ｂと、第二金属部材２と、補助部材１０Ｂとを用意する。第一金属部材１Ｂの端面１ａは、外周面１ｇ及び内周面１ｈに対して垂直になっている。第二金属部材２は、第一実施形態と同一である。 In the preparation step, the first metal member 1B, the second metal member 2, and the auxiliary member 10B are prepared. The end surface 1a of the first metal member 1B is perpendicular to the outer peripheral surface 1g and the inner peripheral surface 1h. The second metal member 2 is the same as in the first embodiment.

第三実施形態の補助部材１０Ｂは、断面台形状の本体部１１Ｂと、本体部１１Ｂの内周面１０ｄから内側に突出する突起部１２とを備えている。
本体部１１Ｂは、外周面（表面）１０ａと、側面１０ｂ，１０ｃと、内周面（裏面）１０ｄを備えている。側面１０ｂは、外周面１０ａに対して垂直になっている。側面１０ｃは、外周面１０ａから離間するにつれて先細りとなるように傾斜している。側面１０ｃの傾斜角度は、第二金属部材２の端面２ａの傾斜角度と同一である。突起部１２は、第一実施形態と同一である。なお、第三実施形態の補助部材１０Ｂにおいて突起部１２を形成しなくてもよい。 The auxiliary member 10B of the third embodiment includes a body portion 11B having a trapezoidal cross section and projections 12 projecting inward from an inner peripheral surface 10d of the body portion 11B.
The body portion 11B includes an outer peripheral surface (front surface) 10a, side surfaces 10b and 10c, and an inner peripheral surface (back surface) 10d. The side surface 10b is perpendicular to the outer peripheral surface 10a. The side surface 10c is slanted so as to taper away from the outer peripheral surface 10a. The inclination angle of the side surface 10 c is the same as the inclination angle of the end surface 2 a of the second metal member 2 . The protrusion 12 is the same as in the first embodiment. Note that the protrusion 12 may not be formed in the auxiliary member 10B of the third embodiment.

突合せ工程では、第一金属部材１Ｂと、第二金属部材２と、補助部材１０Ｂとを突き合わせる。第一金属部材１Ｂの端面１ａと、補助部材１０Ｂの側面１０ｂとが突き合わされて突合せ部Ｊ１が形成される。第二金属部材２の端面２ａと、補助部材１０Ｂの側面１０ｃとが突き合わされて突合せ部Ｊ２が形成される。補助部材１０の外周面（表面）１０ａは、第一金属部材１の外周面１ｇ及び第二金属部材２の外周面２ｇとそれぞれ面一になる。補助部材１０Ｂの内周面（裏面）１０ｄは、第一金属部材１の内周面１ｈ及び第二金属部材２の内周面１ｈとそれぞれ面一になる。 In the butting step, the first metal member 1B, the second metal member 2, and the auxiliary member 10B are butted against each other. The end surface 1a of the first metal member 1B and the side surface 10b of the auxiliary member 10B are butted together to form a butt portion J1. The end surface 2a of the second metal member 2 and the side surface 10c of the auxiliary member 10B are butted together to form a butt portion J2. An outer peripheral surface (surface) 10a of the auxiliary member 10 is flush with the outer peripheral surface 1g of the first metal member 1 and the outer peripheral surface 2g of the second metal member 2, respectively. An inner peripheral surface (back surface) 10d of the auxiliary member 10B is flush with the inner peripheral surface 1h of the first metal member 1 and the inner peripheral surface 1h of the second metal member 2, respectively.

接合工程では、図８に示すように、回転ツールＦを用いて摩擦攪拌接合を行う。第三実施形態では、回転ツールＦの攪拌ピンＦ２のみを補助部材１０Ｂに挿入し、攪拌ピンＦ２の基端側を露出させた状態で補助部材１０Ｂに沿って相対移動させて突合せ部Ｊ１，Ｊ２に対して摩擦攪拌接合を行う。
また、第三実施形態では、攪拌ピンＦ２の回転中心軸Ｚを第二金属部材２側に傾斜させつつ、攪拌ピンＦ２の外周面を、第一金属部材１の端面１ａと、第二金属部材２の端面２ａとに僅かに接触させた状態で摩擦攪拌を行う。
なお、回転ツールＦの傾斜角度は、適宜設定すればよいが、攪拌ピンＦ２の外周面と第一金属部材１Ｂの端面１ａとが平行となるとともに、攪拌ピンＦ２の外周面と第二金属部材２の端面２ａとが平行となるように設定することが好ましい。 In the joining step, as shown in FIG. 8, a rotating tool F is used to perform friction stir welding. In the third embodiment, only the agitating pin F2 of the rotary tool F is inserted into the auxiliary member 10B, and the butt portions J1 and J2 are moved by relatively moving the agitating pin F2 along the auxiliary member 10B while exposing the base end side of the agitating pin F2. Friction stir welding is performed on the
Further, in the third embodiment, the rotation center axis Z of the stirring pin F2 is inclined toward the second metal member 2, and the outer peripheral surface of the stirring pin F2 is aligned with the end surface 1a of the first metal member 1 and the second metal member. Friction stir-stirring is performed in the state of slightly contacting the end face 2a of 2.
The angle of inclination of the rotating tool F may be set as appropriate. 2 is preferably set so as to be parallel to the end face 2a.

以上説明した第三実施形態に係る中空容器の製造方法によっても、第一実施形態と略同等の効果を得ることができる。また、第三実施形態では、第一金属部材１Ｂの端面１ａを傾斜面とする必要がないため、作業手間を省くことができる。 Approximately the same effects as those of the first embodiment can be obtained by the hollow container manufacturing method according to the third embodiment described above. In addition, in the third embodiment, the end surface 1a of the first metal member 1B does not need to be inclined, so that labor can be saved.

［第四実施形態］
次に、本発明の第四実施形態に係る中空容器の製造方法について説明する。図９は、本発明の第四実施形態に係る中空容器の製造方法の準備工程を示す斜視図である。図１０は、第四実施形態に係る中空容器の製造方法の接合工程を示す断面図である。図１１は、第四実施形態に係る中空容器の製造方法の接合工程を示す斜視図である。
第四実施形態に係る中空容器の製造方法では、準備工程と、突合せ工程と、接合工程とを行う。第四実施形態では、第一金属部材１Ｃ、第二金属部材２Ｃ及び補助部材１０Ｃの形状が第一実施形態と主に相違する。本実施形態では、第一実施形態と相違する部分を中心に説明する。 [Fourth embodiment]
Next, a method for manufacturing a hollow container according to the fourth embodiment of the present invention will be described. FIG. 9 is a perspective view showing a preparatory step of a hollow container manufacturing method according to a fourth embodiment of the present invention. FIG. 10 is a cross-sectional view showing a joining step in a hollow container manufacturing method according to the fourth embodiment. FIG. 11 is a perspective view showing a joining step in a hollow container manufacturing method according to the fourth embodiment.
In the hollow container manufacturing method according to the fourth embodiment, a preparation step, a butting step, and a joining step are performed. The fourth embodiment differs from the first embodiment mainly in the shapes of the first metal member 1C, the second metal member 2C, and the auxiliary member 10C. In this embodiment, the description will focus on the parts that are different from the first embodiment.

図９に示すように、第四実施形態の第一金属部材１Ｃの内面１ｃの中央部には、円形の底部１ｄと、底部１ｄの周縁部から立ち上がる円筒状の周壁部１ｅと、を備えた凹部１ｆが形成されている。
第四実施形態の第二金属部材２Ｃの内面２ｃの中央部には、円形の底部２ｄと、底部２ｄの周縁部から立ち上がる円筒状の周壁部２ｅと、を備えた凹部２ｆが形成されている。
第四実施形態の補助部材１０Ｃは、第一金属部材１Ｃと第二金属部材２Ｃとの間に介設される円形の枠状の部材である。 As shown in FIG. 9, the central portion of the inner surface 1c of the first metal member 1C of the fourth embodiment has a circular bottom portion 1d and a cylindrical peripheral wall portion 1e rising from the peripheral edge portion of the bottom portion 1d. A recess 1f is formed.
In the central portion of the inner surface 2c of the second metal member 2C of the fourth embodiment, there is formed a concave portion 2f having a circular bottom portion 2d and a cylindrical peripheral wall portion 2e rising from the peripheral edge portion of the bottom portion 2d. .
The auxiliary member 10C of the fourth embodiment is a circular frame-shaped member interposed between the first metal member 1C and the second metal member 2C.

突合せ工程では、図１０に示すように、第一金属部材１Ｃの端面１ａと第二金属部材２Ｃの端面２ａとの間に補助部材１０Ｃを挟み込み、突合せ部Ｊ１，Ｊ２を形成する。
接合工程では、第一実施形態と概ね同じ要領で攪拌ピンＦ２のみを第一金属部材１Ｃ、第二金属部材２Ｃ及び補助部材１０Ｃに接触させ、攪拌ピンＦ２の基端側は、第一金属部材１Ｃ及び第二金属部材２Ｃから露出した状態で摩擦攪拌を行う。そして、図１１に示すように、回転ツールＦを補助部材１０Ｃに沿って相対移動させ、回転ツールＦを第一金属部材１Ｃ及び第二金属部材２Ｃの周壁部１ｅ，２ｅの外周面を一周させる。回転ツールＦの移動軌跡には塑性化領域Ｗが形成される。 In the butting step, as shown in FIG. 10, the auxiliary member 10C is sandwiched between the end face 1a of the first metal member 1C and the end face 2a of the second metal member 2C to form butting portions J1 and J2.
In the joining step, only the stirring pin F2 is brought into contact with the first metal member 1C, the second metal member 2C, and the auxiliary member 10C in substantially the same manner as in the first embodiment, and the base end side of the stirring pin F2 contacts the first metal member. Friction stir is performed in a state exposed from 1C and the second metal member 2C. Then, as shown in FIG. 11, the rotating tool F is relatively moved along the auxiliary member 10C, and the rotating tool F is caused to go around the outer peripheral surfaces of the peripheral wall portions 1e and 2e of the first metal member 1C and the second metal member 2C. . A plasticized region W is formed in the movement trajectory of the rotating tool F. As shown in FIG.

第一金属部材１Ｃの周壁部１ｅと第二金属部材２Ｃの周壁部２ｅとを摩擦攪拌接合することで、第一金属部材１Ｃの凹部１ｆと第二金属部材２Ｃの凹部２ｆとが連結される。これにより、両凹部１ｆ，２ｆによって形成された内部空間を有する円柱状の中空容器２００が形成される。 By friction stir welding the peripheral wall portion 1e of the first metal member 1C and the peripheral wall portion 2e of the second metal member 2C, the recess 1f of the first metal member 1C and the recess 2f of the second metal member 2C are connected. . As a result, a columnar hollow container 200 having an internal space defined by both recesses 1f and 2f is formed.

以上説明した第四実施形態に係る中空容器の製造方法によっても、第一実施形態と略同等の効果を得ることができる。 Approximately the same effects as those of the first embodiment can be obtained by the hollow container manufacturing method according to the fourth embodiment described above.

１ 第一金属部材
１Ｂ 第一金属部材（第三実施形態）
１Ｃ 第一金属部材（第四実施形態）
１ａ 端面（傾斜面）
２ 第二金属部材
２Ｃ 第二金属部材（第四実施形態）
２ａ 端面（傾斜面）
１０ 補助部材
１０ａ 外周面（表面）
１０ｂ 内周面（裏面）
１０Ａ 補助部材（第二実施形態）
１０Ｂ 補助部材（第三実施形態）
１０Ｃ 補助部材（第四実施形態）
１２ 突起部
Ｊ１ 突合せ部
Ｊ２ 突合せ部
Ｆ 回転ツール
Ｆ２ 攪拌ピン 1 first metal member 1B first metal member (third embodiment)
1C first metal member (fourth embodiment)
1a end surface (inclined surface)
2 Second metal member 2C Second metal member (fourth embodiment)
2a end surface (inclined surface)
10 auxiliary member 10a outer peripheral surface (surface)
10b inner peripheral surface (back surface)
10A Auxiliary member (second embodiment)
10B Auxiliary member (third embodiment)
10C Auxiliary member (fourth embodiment)
12 Protruding part J1 Butt part J2 Butt part F Rotating tool F2 Stirring pin

Claims (6)

先細りの攪拌ピンを備えた回転ツールを用いて中空容器を製造する製造方法であって、
底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第一金属部材と、底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第二金属部材と、枠状の補助部材と、を準備する準備工程と、
前記第一金属部材の周壁部の端面と前記第二金属部材の周壁部の端面とを向き合せて、前記端面同士の隙間に前記補助部材を挟みこみ、前記第一金属部材の周壁部の端面と前記補助部材の一方の側面とを突合せて第一突合せ部を形成し、前記第二金属部材の周壁部の端面と前記補助部材の他方の側面とを突合せて第二突合せ部を形成する突合せ工程と、
回転する前記回転ツールを前記補助部材の表面のみから挿入するとともに、前記攪拌ピンのみを前記補助部材に接触させつつ、前記攪拌ピンの外周面を前記第一金属部材及び前記第二金属部材に僅か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に沿って前記回転ツールを相対移動させて前記第一金属部材と前記第二金属部材とを補助部材を介して接合する接合工程と、を含み、
前記第一金属部材、前記第二金属部材及び前記補助部材は、アルミニウム又はアルミニウム合金から形成され、前記第一金属部材及び前記第二金属部材は前記補助部材よりも硬度が高く、
前記第一金属部材及び前記第二金属部材のうち少なくとも一方は、前記周壁部の端面が外側に向けて傾斜する傾斜面を備え、前記補助部材は、少なくとも一方の側面に表面側から裏面側に向けて先細りとなる傾斜面を備える
ことを特徴とする中空容器の製造方法。 A manufacturing method for manufacturing a hollow container using a rotating tool with a tapered stirring pin, comprising:
A first metal member having a recess provided with a bottom and a peripheral wall rising from the peripheral edge of the bottom, a second metal member having a recess provided with a bottom and a peripheral wall rising from the peripheral edge of the bottom, and a frame-shaped auxiliary a preparation step of preparing a member;
The end surface of the peripheral wall portion of the first metal member and the end surface of the peripheral wall portion of the second metal member are opposed to each other, and the auxiliary member is sandwiched between the end surfaces, and the end surface of the peripheral wall portion of the first metal member is provided. and one side surface of the auxiliary member to form a first butt portion, and the end face of the peripheral wall portion of the second metal member and the other side surface of the auxiliary member to form a second butt portion process and
The rotary tool that rotates is inserted only from the surface of the auxiliary member, and while only the stirring pin is brought into contact with the auxiliary member, the outer peripheral surface of the stirring pin slightly touches the first metal member and the second metal member. joining the first metal member and the second metal member via an auxiliary member by relatively moving the rotating tool along the first abutment portion and the second abutment portion while in contact with the and
The first metal member, the second metal member, and the auxiliary member are made of aluminum or an aluminum alloy, and the first metal member and the second metal member have higher hardness than the auxiliary member,
At least one of the first metal member and the second metal member has an inclined surface in which the end surface of the peripheral wall portion is inclined outward, and the auxiliary member is provided on at least one side surface from the front surface side to the back surface side. A method for manufacturing a hollow container, characterized by comprising an inclined surface that tapers toward the bottom. 先細りの攪拌ピンを備えた回転ツールを用いて中空容器を製造する製造方法であって、
底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第一金属部材と、底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第二金属部材と、枠状の補助部材と、を準備する準備工程と、
前記第一金属部材の周壁部の端面と前記第二金属部材の周壁部の端面とを向き合せて、前記端面同士の隙間に前記補助部材を挟みこみ、前記第一金属部材の周壁部の端面と前記補助部材の一方の側面とを突合せて第一突合せ部を形成し、前記第二金属部材の周壁部の端面と前記補助部材の他方の側面とを突合せて第二突合せ部を形成する突合せ工程と、
回転する前記回転ツールを前記補助部材の表面のみから挿入するとともに、前記攪拌ピンのみを前記補助部材に接触させつつ、前記攪拌ピンの外周面を前記第一金属部材及び前記第二金属部材に僅か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に沿って前記回転ツールを相対移動させて前記第一金属部材と前記第二金属部材とを補助部材を介して接合する接合工程と、を含み、
前記第一金属部材、前記第二金属部材及び前記補助部材は、アルミニウム又はアルミニウム合金から形成され、前記第一金属部材及び前記第二金属部材は前記補助部材よりも硬度が高く、
前記第一金属部材及び前記第二金属部材は、前記周壁部の端面が外側に向けて傾斜する傾斜面を備え、前記補助部材は、両方の側面に表面側から裏面側に向けて先細りとなる傾斜面を備える
ことを特徴とする中空容器の製造方法。 A manufacturing method for manufacturing a hollow container using a rotating tool with a tapered stirring pin, comprising:
A first metal member having a recess provided with a bottom and a peripheral wall rising from the peripheral edge of the bottom, a second metal member having a recess provided with a bottom and a peripheral wall rising from the peripheral edge of the bottom, and a frame-shaped auxiliary a preparation step of preparing a member;
The end surface of the peripheral wall portion of the first metal member and the end surface of the peripheral wall portion of the second metal member are opposed to each other, and the auxiliary member is sandwiched between the end surfaces, and the end surface of the peripheral wall portion of the first metal member is provided. and one side surface of the auxiliary member to form a first butt portion, and the end face of the peripheral wall portion of the second metal member and the other side surface of the auxiliary member to form a second butt portion process and
The rotary tool that rotates is inserted only from the surface of the auxiliary member, and while only the stirring pin is brought into contact with the auxiliary member, the outer peripheral surface of the stirring pin slightly touches the first metal member and the second metal member. joining the first metal member and the second metal member via an auxiliary member by relatively moving the rotating tool along the first abutment portion and the second abutment portion while in contact with the and
The first metal member, the second metal member, and the auxiliary member are made of aluminum or an aluminum alloy, and the first metal member and the second metal member have higher hardness than the auxiliary member,
The first metal member and the second metal member have inclined surfaces in which the end surfaces of the peripheral wall portions are inclined outward, and the auxiliary member has both side surfaces tapered from the surface side to the back side. A method for manufacturing a hollow container, comprising: a slanted surface. 先細りの攪拌ピンを備えた回転ツールを用いて中空容器を製造する製造方法であって、
底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第一金属部材と、底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第二金属部材と、枠状の補助部材と、を準備する準備工程と、
前記第一金属部材の周壁部の端面と前記第二金属部材の周壁部の端面とを向き合せて、前記端面同士の隙間に前記補助部材を挟みこみ、前記第一金属部材の周壁部の端面と前記補助部材の一方の側面とを突合せて第一突合せ部を形成し、前記第二金属部材の周壁部の端面と前記補助部材の他方の側面とを突合せて第二突合せ部を形成する突合せ工程と、
回転する前記回転ツールを前記補助部材の表面のみから挿入するとともに、前記攪拌ピンのみを前記補助部材に接触させつつ、前記攪拌ピンの外周面を前記第一金属部材及び前記第二金属部材に僅か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に沿って前記回転ツールを相対移動させて前記第一金属部材と前記第二金属部材とを補助部材を介して接合する接合工程と、を含み、
前記第一金属部材、前記第二金属部材及び前記補助部材は、アルミニウム又はアルミニウム合金から形成され、前記第一金属部材及び前記第二金属部材は前記補助部材よりも硬度が高く、
前記第一金属部材及び前記第二金属部材のうち少なくとも一方は、前記周壁部の端面が外側に向けて傾斜する傾斜面を備え、
前記補助部材は、少なくとも一方の側面に表面側から裏面側に向けて先細りとなる傾斜面を備えるとともに、裏面側に少なくとも一方の側面側に向けて広がる突起部を備える
ことを特徴とする中空容器の製造方法。 A manufacturing method for manufacturing a hollow container using a rotating tool with a tapered stirring pin, comprising:
A first metal member having a recess provided with a bottom and a peripheral wall rising from the peripheral edge of the bottom, a second metal member having a recess provided with a bottom and a peripheral wall rising from the peripheral edge of the bottom, and a frame-shaped auxiliary a preparation step of preparing a member;
The end surface of the peripheral wall portion of the first metal member and the end surface of the peripheral wall portion of the second metal member are opposed to each other, and the auxiliary member is sandwiched between the end surfaces, and the end surface of the peripheral wall portion of the first metal member is provided. and one side surface of the auxiliary member to form a first butt portion, and the end face of the peripheral wall portion of the second metal member and the other side surface of the auxiliary member to form a second butt portion process and
The rotary tool that rotates is inserted only from the surface of the auxiliary member, and while only the stirring pin is brought into contact with the auxiliary member, the outer peripheral surface of the stirring pin slightly touches the first metal member and the second metal member. joining the first metal member and the second metal member via an auxiliary member by relatively moving the rotating tool along the first abutment portion and the second abutment portion while in contact with the and
The first metal member, the second metal member, and the auxiliary member are made of aluminum or an aluminum alloy, and the first metal member and the second metal member have higher hardness than the auxiliary member,
At least one of the first metal member and the second metal member has an inclined surface in which an end surface of the peripheral wall portion is inclined outward,
The hollow container is characterized in that the auxiliary member has an inclined surface that tapers from the surface side toward the back side on at least one side surface, and has a protruding portion that widens toward at least one side surface side on the back side. manufacturing method. 先細りの攪拌ピンを備えた回転ツールを用いて中空容器を製造する製造方法であって、
底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第一金属部材と、底部と該底部の周縁部から立ち上がる周壁部を備えた凹部を有する第二金属部材と、枠状の補助部材と、を準備する準備工程と、
前記第一金属部材の周壁部の端面と前記第二金属部材の周壁部の端面とを向き合せて、前記端面同士の隙間に前記補助部材を挟みこみ、前記第一金属部材の周壁部の端面と前記補助部材の一方の側面とを突合せて第一突合せ部を形成し、前記第二金属部材の周壁部の端面と前記補助部材の他方の側面とを突合せて第二突合せ部を形成する突合せ工程と、
回転する前記回転ツールを前記補助部材の表面のみから挿入するとともに、前記攪拌ピンのみを前記補助部材に接触させつつ、前記攪拌ピンの外周面を前記第一金属部材及び前記第二金属部材に僅か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に沿って前記回転ツールを相対移動させて前記第一金属部材と前記第二金属部材とを補助部材を介して接合する接合工程と、を含み、
前記第一金属部材、前記第二金属部材及び前記補助部材は、アルミニウム又はアルミニウム合金から形成され、前記第一金属部材及び前記第二金属部材は前記補助部材よりも硬度が高く、
前記第一金属部材及び前記第二金属部材は、前記周壁部の端面が外側に向けて傾斜する傾斜面を備え、
前記補助部材は、両方の側面に表面側から裏面側に向けて先細りとなる傾斜面を備えるとともに、裏面側に少なくとも一方の側面側に向けて広がる突起部を備える
ことを特徴とする中空容器の製造方法。 A manufacturing method for manufacturing a hollow container using a rotating tool with a tapered stirring pin, comprising:
A first metal member having a recess provided with a bottom and a peripheral wall rising from the peripheral edge of the bottom, a second metal member having a recess provided with a bottom and a peripheral wall rising from the peripheral edge of the bottom, and a frame-shaped auxiliary a preparation step of preparing a member;
The end surface of the peripheral wall portion of the first metal member and the end surface of the peripheral wall portion of the second metal member are opposed to each other, and the auxiliary member is sandwiched between the end surfaces, and the end surface of the peripheral wall portion of the first metal member is provided. and one side surface of the auxiliary member to form a first butt portion, and the end face of the peripheral wall portion of the second metal member and the other side surface of the auxiliary member to form a second butt portion process and
The rotary tool that rotates is inserted only from the surface of the auxiliary member, and while only the stirring pin is brought into contact with the auxiliary member, the outer peripheral surface of the stirring pin slightly touches the first metal member and the second metal member. joining the first metal member and the second metal member via an auxiliary member by relatively moving the rotating tool along the first abutment portion and the second abutment portion while in contact with the and
The first metal member, the second metal member, and the auxiliary member are made of aluminum or an aluminum alloy, and the first metal member and the second metal member have higher hardness than the auxiliary member,
The first metal member and the second metal member each have an inclined surface in which the end surface of the peripheral wall portion is inclined outward,
A hollow container characterized in that the auxiliary member has inclined surfaces on both side surfaces that taper off from the surface side toward the back side, and a protruding portion on the back side that widens toward at least one of the side surfaces. Production method. 前記接合工程では、前記回転ツールを前記第一金属部材及び前記第二金属部材の周壁部の外周面を一周させることを特徴とする請求項１乃至請求項４のいずれか一項に記載の中空容器の製造方法。 5. The hollow structure according to any one of claims 1 to 4, characterized in that in the joining step, the rotating tool is rotated around the outer peripheral surfaces of the peripheral wall portions of the first metal member and the second metal member. A method of manufacturing a container. 前記第一金属部材及び前記第二金属部材は鋳造材であり、前記補助部材は展伸材であることを特徴とする請求項１乃至請求項５のいずれか一項に記載の中空容器の製造方法。 6. Manufacturing a hollow container according to any one of claims 1 to 5, wherein the first metal member and the second metal member are cast materials, and the auxiliary member is a wrought material. Method.
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US17/611,864 US20220226927A1 (en) 2019-05-17 2020-02-07 Method for producing hollow container
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030075584A1 (en) 2001-10-04 2003-04-24 Sarik Daniel J. Method and apparatus for friction stir welding
JP2006061983A (en) 2004-07-29 2006-03-09 Showa Denko Kk Method for friction-stir-welding hollow workpieces
WO2016132768A1 (en) 2015-02-19 2016-08-25 日本軽金属株式会社 Joining method and method for manufacturing composite rolled material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030075584A1 (en) 2001-10-04 2003-04-24 Sarik Daniel J. Method and apparatus for friction stir welding
JP2006061983A (en) 2004-07-29 2006-03-09 Showa Denko Kk Method for friction-stir-welding hollow workpieces
WO2016132768A1 (en) 2015-02-19 2016-08-25 日本軽金属株式会社 Joining method and method for manufacturing composite rolled material

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