JP6239172B1 - Friction stir welding apparatus, C-shaped frame for friction stir welding apparatus, friction stir welding method - Google Patents

Friction stir welding apparatus, C-shaped frame for friction stir welding apparatus, friction stir welding method Download PDF

Info

Publication number
JP6239172B1
JP6239172B1 JP2017064553A JP2017064553A JP6239172B1 JP 6239172 B1 JP6239172 B1 JP 6239172B1 JP 2017064553 A JP2017064553 A JP 2017064553A JP 2017064553 A JP2017064553 A JP 2017064553A JP 6239172 B1 JP6239172 B1 JP 6239172B1
Authority
JP
Japan
Prior art keywords
friction stir
stir welding
welding apparatus
rotating body
spherical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2017064553A
Other languages
Japanese (ja)
Other versions
JP2018167274A (en
Inventor
富夫 小田倉
富夫 小田倉
章弘 佐藤
章弘 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Power Solutions Co Ltd
Original Assignee
Hitachi Power Solutions Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Power Solutions Co Ltd filed Critical Hitachi Power Solutions Co Ltd
Priority to JP2017064553A priority Critical patent/JP6239172B1/en
Application granted granted Critical
Publication of JP6239172B1 publication Critical patent/JP6239172B1/en
Publication of JP2018167274A publication Critical patent/JP2018167274A/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

【課題】自動車のボディのように立体的に配置され、曲面を含む複雑な形状の被接合部材の摩擦撹拌接合を可能にする摩擦撹拌接合装置とそれに用いられるC型フレーム、および摩擦撹拌接合方法を提供する。【解決手段】被接合部材同士を摩擦撹拌接合により接合する摩擦撹拌接合装置であって、複数の関節を有し、三次元空間を自在に移動可能な多軸ロボットアームと、前記多軸ロボットアームの先端に接続される保持部と、前記保持部の一端に接続され、上下動機構を介して接合ツールを保持する接合ツール保持部と、前記保持部の他端に接続され、前記接合ツールからの押圧力を受け止める押圧力受け部と、前記押圧力受け部の前記接合ツールと対向する位置に設けられる球状回転体と、前記球状回転体を回転させる回転機構と、を備えることを特徴とする。【選択図】 図1A friction stir welding apparatus, a C-shaped frame used in the friction stir welding apparatus, and a friction stir welding method for enabling a friction stir welding of a member having a complicated shape including a curved surface arranged three-dimensionally like an automobile body I will provide a. A friction stir welding apparatus for joining members to be joined by friction stir welding, having a plurality of joints and capable of moving freely in a three-dimensional space, and the multi-axis robot arm A holding part connected to the tip of the holding part, a joining tool holding part connected to one end of the holding part and holding the joining tool via a vertical movement mechanism, and connected to the other end of the holding part, from the joining tool A pressing force receiving portion that receives the pressing force of the pressing force, a spherical rotating body provided at a position facing the welding tool of the pressing force receiving portion, and a rotating mechanism that rotates the spherical rotating body. . [Selection] Figure 1

Description

本発明は、被接合部材同士を摩擦撹拌接合により接合する摩擦撹拌接合装置と摩擦撹拌接合方法に係り、特に、自動車のボディなど立体的に配置された被接合部材の接合に適用して有効な技術に関する。   The present invention relates to a friction stir welding apparatus and a friction stir welding method for joining members to be joined by friction stir welding, and is particularly effective when applied to joining of three-dimensionally arranged members to be joined such as an automobile body. Regarding technology.

円柱状の接合ツールを回転させて発生する摩擦熱で被接合材料を軟化させ、その部分を撹拌することで被接合材料同士を接合する摩擦撹拌接合(FSW:Friction Stir Welding)は、材料以外の素材を用いないため、疲労強度が高く、材料も溶融しないことから溶接変形(ひずみ)の少ない接合が可能であり、航空機や自動車のボディなど、幅広い分野での応用が期待されている。   Friction Stir Welding (FSW) that softens the material to be welded by friction heat generated by rotating a cylindrical joining tool and stirs the part to join the materials to be joined. Since no material is used, fatigue strength is high, and since the material does not melt, joining with less welding deformation (strain) is possible, and applications in a wide range of fields such as aircraft and automobile bodies are expected.

FSW装置は、従来、固定設置型のものが活用されており、平面上の強固な載置台に被接合部材を載置し、動かないように被接合部材を保持した上で、直進駆動のみ可能な接合ツールを進行させることで撹拌接合するものである。   Conventionally, fixed installation type FSW devices have been used, and it is only possible to drive straightly after placing a member to be joined on a solid mounting table on a flat surface and holding the member to be prevented from moving. Stir welding is performed by advancing a simple joining tool.

本技術分野の背景技術として、例えば、特許文献1のような技術がある。特許文献1には「より高精度の攪拌接合を行うために、多軸ロボットのアーム先端に接合ツールを配し(ロボットFSW)、接合ツールを平面配置された被接合部材を自在に動ける構造として、接合ツールを進行させて攪拌接合する際に接合線との乖離が所定の大きさに到達したときに補正する技術」が開示されている。   As a background art in this technical field, for example, there is a technique such as Patent Document 1. Patent Document 1 states that “a joining tool is arranged at the tip of an arm of a multi-axis robot (robot FSW) in order to perform highly accurate stir welding, and the joining tool can be moved freely on a planar arrangement. Further, there is disclosed a technique for correcting when the deviation from the joining line reaches a predetermined magnitude when the joining tool is advanced and stirring joining is performed.

また、特許文献2には「加工対象部材を載置すべく床に固設された載置台と、載置台に固設されて加工対象部材を装脱自在に固定する保持機構と、載置台の上方で載置台に対向して配置自在な接合ツールと、載置台の下方で載置台の下面に当接するように配置自在な補助支持機構と、接合ツール及び補助支持機構を装着治具で保持して床に固設されたロボットと、を備える摩擦攪拌接合装置」が開示されている。(特許文献2の段落[0022]参照)   Further, Patent Document 2 discloses a “mounting table fixed on the floor for mounting the processing target member, a holding mechanism fixed on the mounting table to removably fix the processing target member, and a mounting table. A joining tool that can be placed above the mounting table at the top, an auxiliary support mechanism that can be placed so as to abut the lower surface of the mounting table below the mounting table, and the joining tool and the auxiliary support mechanism are held by a mounting jig. In addition, a friction stir welding apparatus including a robot fixed to a floor is disclosed. (See paragraph [0022] of Patent Document 2)

特許第5945348号公報Japanese Patent No. 5945348 特開2014−128825号公報JP 2014-128825 A

上述したように、例えば自動車用部品においては、三次元空間に載置台を設けずに、曲面を含む被接合部材を、直線的または曲線的に攪拌接合する技術が求められている。この際の課題は次の2つが存在する。   As described above, for example, in automotive parts, there is a demand for a technique for agitating and joining linearly or curvedly a member to be joined including a curved surface without providing a mounting table in a three-dimensional space. The following two problems exist at this time.

(1)強固に固定した載置台を設けることができないために、接合ツールを被接合部材に挿入するときの押圧力を受止める押圧力受け台が必要となる。   (1) Since a firmly fixed mounting table cannot be provided, a pressing force receiving table that receives a pressing force when the bonding tool is inserted into the member to be bonded is required.

(2)接合ツールを、被接合部材に挿入して攪拌接合しながら自在に駆動するための機構が必要となる。   (2) A mechanism for freely driving the joining tool while inserting it into the member to be joined while stirring and joining is required.

しかしながら、上記特許文献1および特許文献2に記載されている2つのタイプのFSW装置は、いずれも平面状の強固な載置台に被接合部材を載置することを前提とするものであり、例えば自動車用部材を攪拌接合する際のニーズである、三次元空間上で強固な載置台を用いない立体的な攪拌接合に対応することはできない。   However, the two types of FSW devices described in Patent Document 1 and Patent Document 2 are both premised on mounting a member to be bonded on a flat, solid mounting table. The three-dimensional stir welding that does not use a strong mounting table in a three-dimensional space, which is a need when stir welding a member for an automobile, cannot be supported.

そこで、本発明の目的は、自動車のボディのように立体的に配置され、曲面を含む複雑な形状の被接合部材の摩擦撹拌接合を可能にする摩擦撹拌接合装置とそれに用いられるC型フレームを提供することにある。   Accordingly, an object of the present invention is to provide a friction stir welding apparatus and a C-shaped frame used for the friction stir welding apparatus, which are arranged in a three-dimensional manner like a body of an automobile and enable a friction stir welding of a member having a complicated shape including a curved surface. It is to provide.

また、本発明の別の目的は、自動車のボディのように立体的に配置され、曲面を含む複雑な形状の被接合部材であっても、被接合部材同士の確実な摩擦撹拌接合が可能な摩擦撹拌接合方法を提供することにある。   Another object of the present invention is to provide a reliable friction stir welding between the members to be joined even when the members are three-dimensionally arranged like a car body and have a complicated shape including a curved surface. It is to provide a friction stir welding method.

上記課題を解決するために、本発明は、被接合部材同士を摩擦撹拌接合により接合する摩擦撹拌接合装置であって、複数の関節を有し、三次元空間を自在に移動可能な多軸ロボットアームと、前記多軸ロボットアームの先端に接続される保持部と、前記保持部の一端に接続され、上下動機構を介して接合ツールを保持する接合ツール保持部と、前記保持部の他端に接続され、前記接合ツールからの押圧力を受け止める押圧力受け部と、前記押圧力受け部の前記接合ツールと対向する位置に設けられる凹部に配置される球状回転体と、所定の幅で形成されて、前記凹部の開口部の縁またはその外側で一端が接続され、他端が開放されて、前記球状回転体の直径よりも内側で、且つ前記球状回転体と接触せずに前記球状回転体の頂点よりも下側に設けられる球状回転体押えと、を備えることを特徴とする。 In order to solve the above-mentioned problems, the present invention is a friction stir welding apparatus for joining members to be joined by friction stir welding, and has a plurality of joints and can move freely in a three-dimensional space. An arm, a holding part connected to the tip of the multi-axis robot arm, a joining tool holding part connected to one end of the holding part and holding a joining tool via a vertical movement mechanism, and the other end of the holding part A pressing force receiving portion that receives the pressing force from the welding tool, and a spherical rotating body that is disposed in a concave portion provided at a position facing the welding tool of the pressing force receiving portion, with a predetermined width. The one end is connected to the edge of the opening of the recess or the outside thereof, and the other end is opened, and the spherical rotation is performed inside the diameter of the spherical rotating body and without contacting the spherical rotating body. Below the top of the body A spherical rotating body presser to be kicked, characterized in that it comprises a.

また、本発明は、被接合部材同士を摩擦撹拌接合により接合する摩擦撹拌接合装置用C型フレームであって、多軸ロボットアームの先端に接続される保持部と、前記保持部の一端に接続され、上下動機構を介して接合ツールを保持する接合ツール保持部と、前記保持部の他端に接続され、前記接合ツールからの押圧力を受け止める押圧力受け部と、前記押圧力受け部の前記接合ツールと対向する位置に設けられる凹部に配置される球状回転体と、所定の幅で形成されて、前記凹部の開口部の縁またはその外側で一端が接続され、他端が開放されて、前記球状回転体の直径よりも内側で、且つ前記球状回転体と接触せずに前記球状回転体の頂点よりも下側に設けられる球状回転体押えと、を備えることを特徴とする。 Further, the present invention is a C-shaped frame for a friction stir welding apparatus for joining members to be joined by friction stir welding, and is connected to a holding portion connected to a tip of a multi-axis robot arm and one end of the holding portion A welding tool holding unit that holds the welding tool via a vertical movement mechanism, a pressing force receiving unit that is connected to the other end of the holding unit and receives a pressing force from the bonding tool, and a pressing force receiving unit A spherical rotating body arranged in a recess provided at a position facing the welding tool, and formed with a predetermined width, one end connected to the edge of the opening of the recess or the outside thereof, and the other end opened. And a spherical rotating body presser provided inside the diameter of the spherical rotating body and below the apex of the spherical rotating body without being in contact with the spherical rotating body .

また、本発明は、上記のいずれかの摩擦撹拌接合装置を用いて被接合部材同士を摩擦撹拌接合により接合する摩擦撹拌接合方法であって、前記摩擦撹拌接合装置は、前記多軸ロボットアームの動きを制御する制御部を備え、前記制御部の指令により前記被接合部材の形状に追従して前記接合ツールを移動するステップと、前記制御部の指令により前記被接合部材の接合部に前記接合ツールを挿入するステップと、前記制御部の指令により前記接合ツールの動作を制御しながら前記被接合部材同士を摩擦撹拌接合するステップと、を有することを特徴とする。 The present invention is also a friction stir welding method for joining members to be joined by friction stir welding using any one of the friction stir welding apparatuses described above , wherein the friction stir welding apparatus includes the multi-axis robot arm. a control unit for controlling the movement, said the step of moving the bonding tool to follow the shape of the workpieces, the joint at the junction of the workpieces by a command of the control unit by a command from the control unit A step of inserting a tool; and a step of friction stir welding the members to be joined together while controlling the operation of the welding tool according to a command from the control unit.

本発明によれば、自動車のボディのように立体的に配置され、曲面を含む複雑な形状の被接合部材の摩擦撹拌接合を可能にする摩擦撹拌接合装置とそれに用いられるC型フレームを実現することができる。   ADVANTAGE OF THE INVENTION According to this invention, the friction stir welding apparatus which is arrange | positioned three-dimensionally like the body of a motor vehicle, and enables the friction stir welding of the to-be-joined member of a complicated shape including a curved surface, and the C type | mold flame | frame used for it are implement | achieved. be able to.

また、本発明によれば、自動車のボディのように立体的に配置され、曲面を含む複雑な形状の被接合部材であっても、被接合部材同士の確実な摩擦撹拌接合が可能な摩擦撹拌接合方法を実現することができる。   Further, according to the present invention, the friction stirrer can be reliably frictionally joined between the members to be joined even if the members are three-dimensionally arranged like a body of an automobile and have a complicated shape including a curved surface. A joining method can be realized.

上記した以外の課題、構成および効果は、以下の実施形態の説明によって明らかにされる。   Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

本発明の一実施形態に係る摩擦撹拌接合装置の全体概要を示す図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the whole outline | summary of the friction stir welding apparatus which concerns on one Embodiment of this invention. 本発明の一実施形態に係る摩擦撹拌接合装置の押圧力受け部の拡大図である。It is an enlarged view of the pressing force receiving part of the friction stir welding apparatus according to an embodiment of the present invention. 本発明の一実施形態に係る摩擦撹拌接合装置の押圧力受け部の拡大図である。It is an enlarged view of the pressing force receiving part of the friction stir welding apparatus according to an embodiment of the present invention. 本発明の一実施形態に係る摩擦撹拌接合装置の押圧力受け部の拡大図である。It is an enlarged view of the pressing force receiving part of the friction stir welding apparatus according to an embodiment of the present invention. 本発明の一実施形態に係る摩擦撹拌接合装置の押圧力受け部の拡大図である。It is an enlarged view of the pressing force receiving part of the friction stir welding apparatus according to an embodiment of the present invention. 本発明の一実施形態に係る摩擦撹拌接合装置の押圧力受け部の拡大断面図である。It is an expanded sectional view of the pressing force receiving part of the friction stir welding apparatus according to an embodiment of the present invention. 本発明の一実施形態に係る摩擦撹拌接合装置の押圧力受け部の拡大断面図である。It is an expanded sectional view of the pressing force receiving part of the friction stir welding apparatus according to an embodiment of the present invention. 本発明の一実施形態に係る摩擦撹拌接合装置の押圧力受け部の拡大断面図である。It is an expanded sectional view of the pressing force receiving part of the friction stir welding apparatus according to an embodiment of the present invention. 本発明の一実施形態に係る摩擦撹拌接合装置の押圧力受け部の拡大図である。It is an enlarged view of the pressing force receiving part of the friction stir welding apparatus according to an embodiment of the present invention. 本発明の一実施形態に係る摩擦撹拌接合装置用C型フレームの構成概要を示す図である。It is a figure which shows the structure outline | summary of the C-type flame | frame for friction stir welding apparatuses which concerns on one Embodiment of this invention. 本発明の一実施形態に係る摩擦撹拌接合装置用C型フレームの構成概要を示す図である。It is a figure which shows the structure outline | summary of the C-type flame | frame for friction stir welding apparatuses which concerns on one Embodiment of this invention. 本発明の一実施形態に係る摩擦撹拌接合装置用C型フレームの構成概要を示す図である。It is a figure which shows the structure outline | summary of the C-type flame | frame for friction stir welding apparatuses which concerns on one Embodiment of this invention. 本発明の一実施形態に係る摩擦撹拌接合装置による摩擦撹拌接合を概念的に示す図である。It is a figure which shows notionally the friction stir welding by the friction stir welding apparatus which concerns on one Embodiment of this invention. 本発明の一実施形態に係る摩擦撹拌接合方法を示すフローチャートである。It is a flowchart which shows the friction stir welding method which concerns on one Embodiment of this invention.

以下、図面を用いて本発明の実施例を説明する。なお、各図面において、同一の構成については同一の符号を付し、重複する部分についてはその詳細な説明は省略する。   Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and detailed description of the overlapping portions is omitted.

図1および図2を参照して、実施例1の摩擦撹拌接合装置とそれに用いられるC型フレームについて説明する。図1は本実施例の摩擦撹拌接合装置1の全体概要を示しており、図2は図1における押圧力受け部3cの拡大図である。   With reference to FIG. 1 and FIG. 2, the friction stir welding apparatus of Example 1 and the C-type frame used therefor will be described. FIG. 1 shows an overall outline of the friction stir welding apparatus 1 of the present embodiment, and FIG. 2 is an enlarged view of the pressing force receiving portion 3c in FIG.

図1に示すように、摩擦撹拌接合装置1は主要な構成として、多軸ロボット2、C型フレーム3、昇降装置であるボールスクリュー4を介してC型フレーム3と接続される接合ツール5、C型フレーム3の押圧力受け部3cに設けられた球状回転体であるトラックボール6、およびトラックボール6を押圧力受け部3cに保持する球状回転体押え7を備えている。   As shown in FIG. 1, the friction stir welding apparatus 1 includes, as main components, a multi-axis robot 2, a C-shaped frame 3, a welding tool 5 connected to the C-shaped frame 3 via a ball screw 4 that is a lifting device, A trackball 6 which is a spherical rotating body provided in the pressing force receiving portion 3c of the C-shaped frame 3 and a spherical rotating body presser 7 for holding the trackball 6 in the pressing force receiving portion 3c are provided.

多軸ロボット2は、一般的にロボットアームと呼ばれる垂直多関節ロボットであり、多関節構造とサーボモーターによって三次元空間を自在に動作(移動)することができる。関節の数(軸数)によって可動範囲が変化するが、ここでは台座部2a上に下腕部2b、上腕部2c、手首部2dを有する三軸タイプのロボットアームの例を示す。多軸ロボット2の白丸部分が関節である。   The multi-axis robot 2 is a vertical articulated robot generally called a robot arm, and can freely move (move) in a three-dimensional space by a multi-joint structure and a servo motor. Although the movable range changes depending on the number of joints (number of axes), an example of a three-axis type robot arm having a lower arm portion 2b, an upper arm portion 2c, and a wrist portion 2d on the pedestal portion 2a is shown here. The white circle portion of the multi-axis robot 2 is a joint.

なお、摩擦撹拌接合装置1はサーボアンプや基板などが収納された制御装置(図示せず)を備えており、この制御装置からの指令(プログラム信号)により多軸ロボット2の動きを総合的にコントロールする。   The friction stir welding apparatus 1 is provided with a control device (not shown) in which a servo amplifier, a substrate, and the like are housed, and the movement of the multi-axis robot 2 is comprehensively determined by a command (program signal) from the control device. To control.

多軸ロボット2の手首部2dの先端には、略C型形状(または略コの字形状)のC型フレーム3が関節を介して回動可能に接続されている。C型フレーム3は、手首部2dの先端に接続されてC型フレーム3自体を多軸ロボット2に保持する保持部(立上部)3a、保持部3aの一方の端部に接続されてボールスクリュー4を介して接合ツール5を保持する接合ツール保持部3b、保持部3aの他方の端部に接続されて接合ツール5からの押圧力を受け止める押圧力受け部3cから構成されている。   A substantially C-shaped (or substantially U-shaped) C-shaped frame 3 is connected to the tip of the wrist 2d of the multi-axis robot 2 via a joint. The C-type frame 3 is connected to the tip of the wrist 2d to hold the C-type frame 3 itself on the multi-axis robot 2, and is connected to one end of the holding unit 3a to be connected to a ball screw. 4, a welding tool holding portion 3 b that holds the welding tool 5, and a pressing force receiving portion 3 c that is connected to the other end of the holding portion 3 a and receives the pressing force from the welding tool 5.

なお、図1では保持部3a、接合ツール保持部3b、押圧力受け部3cの境界が分かり易いように補助線(点線)を用いて示しているが、本実施例のC型フレーム3はこれらの部位が一体物として形成される場合も含んでいる。   In FIG. 1, auxiliary lines (dotted lines) are used for easy understanding of the boundaries of the holding portion 3a, the welding tool holding portion 3b, and the pressing force receiving portion 3c. This includes the case where these parts are formed as a single body.

接合ツール5は、ボールスクリュー4を介して接合ツール保持部3bに接続されており、接合ツール保持部3bに対して上下方向(ここでは、図1のz方向)に動作する。接合ツール5は、接合ヘッド5a、ショルダ5b、接合ピン5cで構成され、接合ピン5cを回転させながら被接合部材に所定の深さまで挿入し、接合線に沿って移動させることで摩擦撹拌接合を行う。   The joining tool 5 is connected to the joining tool holding part 3b via the ball screw 4, and operates in the vertical direction (here, the z direction in FIG. 1) with respect to the joining tool holding part 3b. The joining tool 5 includes a joining head 5a, a shoulder 5b, and a joining pin 5c. The joining tool 5 is inserted into a member to be joined to a predetermined depth while rotating the joining pin 5c, and is moved along the joining line to perform friction stir welding. Do.

球状回転体(トラックボール)6は、押圧力受け部3cの接合ツール5(接合ピン5c)と対向する位置に配置され、球状回転体押え7により押圧力受け部3cに保持されている。押圧力受け部3cには球状回転体6が配置される凹部(図示せず)が設けられている。また、凹部の内壁面には球状回転体6を回転させる回転機構(図示せず)が設けられている。この凹部と回転機構の詳細については後述する。   The spherical rotating body (trackball) 6 is disposed at a position facing the joining tool 5 (joining pin 5c) of the pressing force receiving portion 3c, and is held by the pressing force receiving portion 3c by the spherical rotating body presser 7. The pressing force receiving portion 3c is provided with a recess (not shown) in which the spherical rotating body 6 is disposed. A rotation mechanism (not shown) for rotating the spherical rotating body 6 is provided on the inner wall surface of the recess. Details of the recess and the rotation mechanism will be described later.

球状回転体押え7は、図2に示すように、球状回転体6の周囲を囲むように環状に形成されており、押圧力受け部3cの凹部(図示せず)の開口部の縁またはその外側で一端が接続され、他端が開放されて、球状回転体6の直径よりも内側で、且つ球状回転体6と接触せずに球状回転体6の頂点(図1中の黒点)よりも下側に位置するように設けられる。   As shown in FIG. 2, the spherical rotating body retainer 7 is formed in an annular shape so as to surround the spherical rotating body 6, and the edge of the opening of the concave portion (not shown) of the pressing force receiving portion 3c or the edge thereof. One end is connected on the outer side, the other end is opened, and the inner side of the diameter of the spherical rotating body 6 is not in contact with the spherical rotating body 6 and the apex of the spherical rotating body 6 (black dot in FIG. 1). It is provided so as to be located on the lower side.

以上説明したように、本実施例の摩擦撹拌接合装置は、C型フレームの押圧力受け部に球状回転体とそれを保持する球状回転体押えを設けることにより、C型フレームに保持された接合ツールが湾曲した三次元曲線に沿って連続的に滑らかに動作することができる。   As described above, the friction stir welding apparatus according to the present embodiment is provided with the spherical rotating body and the spherical rotating body presser that holds the spherical rotating body in the pressing force receiving portion of the C type frame, so that the bonding held by the C type frame is performed. The tool can operate continuously and smoothly along a curved three-dimensional curve.

これにより、自動車のボディなど立体的に配置された被接合部材を接合する場合であっても、湾曲した三次元曲線に沿って連続的に滑らかな動きができ、被接合部材同士を確実に摩擦撹拌接合することができる。   As a result, even when three-dimensionally arranged members to be joined such as the body of an automobile are joined, smooth movement can be continuously performed along the curved three-dimensional curve, and the members to be joined are reliably rubbed. Stir welding is possible.

なお、図1中の補助線Bで示すように、球状回転体6の頂点(図1中の黒点)と接合ツールの先端部が略同軸上(略同一直線上)に位置するように球状回転体6を押圧力受け部3cに設けるのが好適である。言い換えると、接合ツール5の中心点の延長線上に球状回転体6の頂点(中心点)が位置するように接合ツール5が保持されるのが望ましい。   In addition, as shown by the auxiliary line B in FIG. 1, the spherical rotation is performed so that the apex of the spherical rotating body 6 (black point in FIG. 1) and the tip of the welding tool are positioned substantially on the same axis (substantially on the same straight line). It is preferable to provide the body 6 in the pressing force receiving portion 3c. In other words, it is desirable that the welding tool 5 is held such that the vertex (center point) of the spherical rotating body 6 is positioned on the extended line of the center point of the welding tool 5.

摩擦撹拌接合する際、被接合部材は接合ツール5(接合ピン5c)と球状回転体6の間に配置されて接合ツール5(接合ピン5c)からの押圧力を受けるが、球状回転体6の頂点(図1中の黒点)でその反力を受けることができ、被接合部材の不必要な変形を防ぐことができ、なお且つ、接合ツール5(接合ピン5c)を連続的に滑らかに移動させることができる。   When the friction stir welding is performed, the member to be joined is disposed between the joining tool 5 (joining pin 5c) and the spherical rotating body 6 and receives a pressing force from the joining tool 5 (joining pin 5c). The reaction force can be received at the apex (black dot in FIG. 1), unnecessary deformation of the member to be joined can be prevented, and the joining tool 5 (joining pin 5c) can be moved continuously and smoothly. Can be made.

また、C型フレーム3を構成する保持部3a、接合ツール保持部3b、押圧力受け部3cをそれぞれ分割して着脱可能に構成した場合、被接合部材の大きさや形状に合わせて別の接合ツール保持部3bと押圧力受け部3cに交換することで、C型フレーム3の逃げ量(図1中の距離A)を被接合部材に応じて最適な逃げ量(距離)に調整することができる。   Further, when the holding part 3a, the joining tool holding part 3b, and the pressing force receiving part 3c constituting the C-shaped frame 3 are divided and configured to be detachable, different joining tools are used in accordance with the size and shape of the members to be joined. By replacing the holding portion 3b and the pressing force receiving portion 3c, the escape amount (distance A in FIG. 1) of the C-shaped frame 3 can be adjusted to the optimum escape amount (distance) according to the member to be joined. .

図3から図5を参照して、実施例2の摩擦撹拌接合装置とC型フレームについて説明する。図3は摩擦撹拌接合装置の押圧力受け部3cの拡大図であり、図4および図5はそれぞれ図3の変形例を示している。   A friction stir welding apparatus and a C-shaped frame of Example 2 will be described with reference to FIGS. FIG. 3 is an enlarged view of the pressing force receiving portion 3c of the friction stir welding apparatus, and FIGS. 4 and 5 each show a modification of FIG.

実施例1の図2では球状回転体押え7が球状回転体6の周囲を囲むように環状に形成される例を示したが、図3の球状回転体押え7は球状回転体6を挟んで対向して配置される一対の球状回転体押え7a,7bで構成されている。   In FIG. 2 of the first embodiment, an example in which the spherical rotating body presser 7 is formed in an annular shape so as to surround the spherical rotating body 6 is shown. However, the spherical rotating body presser 7 in FIG. It is composed of a pair of spherical rotary body pressers 7a and 7b arranged to face each other.

球状回転体押え7a,7bの各々は、所定の幅で形成されており、押圧力受け部3cの凹部(図示せず)の開口部の縁またはその外側で一端が接続され、他端が開放されて、球状回転体6の直径よりも内側で、且つ球状回転体6と接触せずに球状回転体6の頂点よりも下側に位置するように設けられている。球状回転体押え7a,7bは、押圧力受け部3cの凹部に球状回転体6を確実の保持できるよう所定の角度θを有して押圧力受け部3cに接続される。   Each of the spherical rotary body pressers 7a and 7b is formed with a predetermined width, and one end is connected to the opening edge of the concave portion (not shown) of the pressing force receiving portion 3c or outside thereof, and the other end is opened. Thus, it is provided so as to be located inside the diameter of the spherical rotator 6 and below the apex of the spherical rotator 6 without contacting the spherical rotator 6. The spherical rotating body retainers 7a and 7b are connected to the pressing force receiving portion 3c with a predetermined angle θ so that the spherical rotating body 6 can be securely held in the recess of the pressing force receiving portion 3c.

図2のように球状回転体押え7を球状回転体6の周囲を囲むように環状に形成した場合、球状回転体6と球状回転体押え7の間に異物が侵入することで球状回転体6が滑らかに回転しなくなる恐れがあるが、図3のように球状回転体押え7a,7bの各々を所定の幅で形成することにより、異物により球状回転体6の回転が阻害される可能性が低くなり、球状回転体6と球状回転体押え7a,7bの間に異物が侵入した場合であっても、容易に異物を取り除くことができる。   As shown in FIG. 2, when the spherical rotary body presser 7 is formed in an annular shape so as to surround the spherical rotary body 6, a foreign object enters between the spherical rotary body 6 and the spherical rotary body presser 7, thereby causing the spherical rotary body 6. May not smoothly rotate, but by forming each of the spherical rotating body pressers 7a and 7b with a predetermined width as shown in FIG. 3, there is a possibility that the rotation of the spherical rotating body 6 is hindered by foreign matter. Even if a foreign object enters between the spherical rotating body 6 and the spherical rotating body holders 7a and 7b, the foreign object can be easily removed.

なお、この所定の幅で形成される球状回転体押え7a,7bの形状は、摩擦撹拌接合装置の用途や被接合部材の種類に応じて、矩形(長方形)や台形に形成する。   In addition, the shape of the spherical rotary body pressers 7a and 7b formed with the predetermined width is formed in a rectangle (rectangular shape) or a trapezoid depending on the use of the friction stir welding apparatus and the type of the member to be joined.

図4は図3の変形例であり、球状回転体6を挟んで対向して配置される一対の球状回転体押え7c,7dは、球状回転体6に対して所定の曲率を有して球状回転体6の方向に湾曲して形成されている。   FIG. 4 is a modification of FIG. 3, and a pair of spherical rotating body pressers 7 c and 7 d arranged to face each other with the spherical rotating body 6 interposed therebetween have a predetermined curvature with respect to the spherical rotating body 6. It is curved in the direction of the rotating body 6.

この球状回転体押え7c,7dは、押圧力受け部3cの凹部(図示せず)の開口部の縁またはその外側で一端が接続され、他端が開放されて、球状回転体6の直径よりも内側で、且つ球状回転体6と接触せずに球状回転体6の頂点よりも下側に位置しており、開放される端部は、球状回転体6の表面と所定の間隙を有している。   The spherical rotary body pressers 7c and 7d have one end connected at the edge of the opening of the concave portion (not shown) of the pressing force receiving portion 3c or the outside thereof, the other end opened, and the diameter of the spherical rotary body 6 is determined. Is located on the inner side and below the apex of the spherical rotator 6 without contacting the spherical rotator 6, and the open end has a predetermined gap from the surface of the spherical rotator 6. ing.

図4のように、球状回転体押え7c,7dを球状回転体6に対して所定の曲率を有して設けることで、球状回転体6が動いた場合に球状回転体6の表面を点(点接触)ではなく、面(面接触)で押えることができ、球状回転体6をより滑らかに回転させることができる。   As shown in FIG. 4, by providing the spherical rotating body retainers 7c and 7d with a predetermined curvature with respect to the spherical rotating body 6, when the spherical rotating body 6 moves, the surface of the spherical rotating body 6 is pointed ( It can be held by a surface (surface contact) instead of a point contact, and the spherical rotating body 6 can be rotated more smoothly.

図5は図3のさらに別の変形例であり、球状回転体6を挟んで対向して配置される一対の球状回転体押え7e,7fは、球状回転体6に対して所定の角度θを有して球状回転体6の方向に屈曲して形成されている。   FIG. 5 shows still another modified example of FIG. 3, and a pair of spherical rotating body retainers 7 e and 7 f arranged to face each other with the spherical rotating body 6 interposed therebetween has a predetermined angle θ with respect to the spherical rotating body 6. And bend in the direction of the spherical rotating body 6.

この球状回転体押え7e,7fは、押圧力受け部3cの凹部(図示せず)の開口部の縁またはその外側で一端が接続され、他端が開放されて、球状回転体6の直径よりも内側で、且つ球状回転体6と接触せずに球状回転体6の頂点よりも下側に位置しており、接続される端部と開放される端部との間で屈曲し、その屈曲部から開放された端部までの間は、球状回転体6の方向に所定の角度θをもって傾斜し、開放される端部は、球状回転体6の表面と所定の間隙を有している。   The spherical rotating body retainers 7e and 7f are connected at one end at the edge of the opening of the recess (not shown) of the pressing force receiving portion 3c or outside thereof, and the other end is opened, and the diameter of the spherical rotating body 6 is determined. Is located on the inner side and below the apex of the spherical rotator 6 without contacting the spherical rotator 6, and is bent between the connected end and the open end. From the part to the open end, it is inclined at a predetermined angle θ in the direction of the spherical rotator 6, and the open end has a predetermined gap from the surface of the spherical rotator 6.

図5のように、球状回転体押え7e,7fを球状回転体6に対して屈曲部を有して設けることで、球状回転体押え7e,7fを押圧力受け部3cに垂直に接続することができるため、図3のように角度θを設けて球状回転体押え7a,7bを押圧力受け部3cに接続する場合に比べて、容易に形成できるメリットがある。   As shown in FIG. 5, by providing the spherical rotating body retainers 7e and 7f with a bent portion with respect to the spherical rotating body 6, the spherical rotating body retainers 7e and 7f are vertically connected to the pressing force receiving portion 3c. Therefore, there is an advantage that it can be easily formed as compared with the case where the spherical rotary body pressers 7a and 7b are connected to the pressing force receiving portion 3c by providing the angle θ as shown in FIG.

図6から図7Bを参照して、実施例3の摩擦撹拌接合装置とC型フレームについて説明する。図6は摩擦撹拌接合装置の押圧力受け部3cの拡大断面図であり、図7Aおよび図7Bはそれぞれ図6の変形例を示している。   A friction stir welding apparatus and a C-shaped frame of Example 3 will be described with reference to FIGS. 6 to 7B. 6 is an enlarged cross-sectional view of the pressing force receiving portion 3c of the friction stir welding apparatus, and FIGS. 7A and 7B each show a modification of FIG.

上述したように、押圧力受け部3cには球状回転体6が配置される凹部が設けられるが、図6に示すように、この凹部の内壁面に軸受材8を設け、摩擦撹拌接合する際に球状回転体6が凹部内で摩擦抵抗が少なく自由に回転できるようにするのが好適である。これにより、摩擦撹拌接合時に接合ツール5(接合ピン5c)を自由に移動することができる。   As described above, the pressing force receiving portion 3c is provided with the concave portion in which the spherical rotating body 6 is disposed. As shown in FIG. 6, when the bearing material 8 is provided on the inner wall surface of the concave portion and friction stir welding is performed. In addition, it is preferable that the spherical rotating body 6 has a low frictional resistance in the recess and can freely rotate. Thereby, the joining tool 5 (joining pin 5c) can be freely moved at the time of friction stir welding.

軸受材8の具体例としては、金属表面にカーボンを含浸させたカーボン含浸軸受材やルーロンなどの樹脂材料を用いる滑り軸受が挙げられる。   Specific examples of the bearing material 8 include a carbon-impregnated bearing material in which a metal surface is impregnated with carbon and a sliding bearing using a resin material such as roulon.

凹部の内壁面に設ける軸受材は、図6のように凹部の内壁面全体に軸受材8を設けてもよく、図7Aのように凹部の内壁面に断続的に軸受材(滑り軸受)8aを設けてもよい。また、図7Bのように凹部の内壁面にボールベアリングを設けて転がり軸受8bとすることで、球状回転体6と凹部内壁面との間の摩擦抵抗がさらに少なくなり、摩擦撹拌接合時に接合ツール5(接合ピン5c)をより滑らかに移動させることができる。   The bearing material provided on the inner wall surface of the recess may be provided with the bearing material 8 on the entire inner wall surface of the recess as shown in FIG. 6, and intermittently on the inner wall surface of the recess as shown in FIG. 7A (slide bearing) 8a. May be provided. Further, as shown in FIG. 7B, by providing a ball bearing on the inner wall surface of the recess to form a rolling bearing 8b, the frictional resistance between the spherical rotating body 6 and the inner wall surface of the recess is further reduced, and a welding tool is used during friction stir welding. 5 (joint pin 5c) can be moved more smoothly.

図8を参照して、実施例4の摩擦撹拌接合装置とC型フレームについて説明する。図8は摩擦撹拌接合装置の押圧力受け部3cの拡大図である。   With reference to FIG. 8, the friction stir welding apparatus and C-type frame of Example 4 will be described. FIG. 8 is an enlarged view of the pressing force receiving portion 3c of the friction stir welding apparatus.

図8に示すように、本実施例では、球状回転体押え7g,7hをそれぞれボルト9a,9bを用いて押圧力受け部3cに接続し、着脱可能に構成している点において、上記の各実施例の球状回転体押えと異なっている。   As shown in FIG. 8, in this embodiment, the spherical rotating body pressers 7g and 7h are connected to the pressing force receiving portion 3c using bolts 9a and 9b, respectively, and are configured to be detachable. This is different from the spherical rotating body presser of the embodiment.

図8のように、球状回転体押え7g,7hを押圧力受け部3cに対して着脱可能に接続することで、摩擦撹拌接合装置の定期メンテナンス時や球状回転体6と球状回転体押え7g,7hとの間隙に異物が侵入した場合に球状回転体押え7g,7hを容易に取り外すことができ、摩擦撹拌接合装置のメンテナンス性を向上することができる。   As shown in FIG. 8, by connecting the spherical rotating body pressers 7g and 7h to the pressing force receiving portion 3c in a detachable manner, the spherical rotating body 6 and the spherical rotating body presser 7g, When a foreign object enters the gap with 7h, the spherical rotating body retainers 7g and 7h can be easily removed, and the maintainability of the friction stir welding apparatus can be improved.

図9から図11を参照して、実施例5の摩擦撹拌接合装置とC型フレームについて説明する。図9は摩擦撹拌接合装置用C型フレームの構成概要を示しており、実施例1の図1で説明した保持部3a、接合ツール保持部3b、押圧力受け部3cの各部位を着脱可能なユニットとして構成する例である。図1における保持部3a、接合ツール保持部3b、押圧力受け部3cは、それぞれ図9の保持部11、接合ツール保持部12、押圧力受け部10に相当し、押圧力受け部10、保持部11、接合ツール保持部12により略C型形状(または略コの字形状)のC型フレームが構成されている。また、図10および図11は図9の変形例である。   With reference to FIGS. 9 to 11, the friction stir welding apparatus and the C-shaped frame of Example 5 will be described. FIG. 9 shows an outline of the configuration of the C-shaped frame for the friction stir welding apparatus, and each part of the holding part 3a, the welding tool holding part 3b, and the pressing force receiving part 3c described in FIG. It is an example comprised as a unit. The holding unit 3a, the bonding tool holding unit 3b, and the pressing force receiving unit 3c in FIG. 1 correspond to the holding unit 11, the bonding tool holding unit 12, and the pressing force receiving unit 10 of FIG. The part 11 and the joining tool holding part 12 constitute a C-shaped frame having a substantially C shape (or a substantially U shape). 10 and 11 are modifications of FIG.

図9に示すように、多軸ロボット2の手首部2dの先端には、保持部11が関節を介して回動可能に接続されている。保持部11の一方の端部には、接合ツール保持部12が連結部(ジョイント)13a,13bにより連結されている。接合ツール保持部12の反対側には、ボールスクリュー4を介して接合ツール5が上下動可能に接続されている。   As shown in FIG. 9, the holding part 11 is connected to the tip of the wrist part 2d of the multi-axis robot 2 so as to be rotatable via a joint. The joining tool holding part 12 is connected to one end of the holding part 11 by connecting parts (joints) 13a and 13b. A welding tool 5 is connected to the opposite side of the welding tool holding portion 12 via a ball screw 4 so as to be movable up and down.

接合ツール5は、図1の構成と同様に、ボールスクリュー4により接合ツール保持部12に対して上下方向(ここでは、図9のz方向)に動作する。接合ツール5は、接合ヘッド5a、ショルダ5b、接合ピン5cで構成され、接合ピン5cを回転させながら被接合部材に所定の深さまで挿入し、接合線に沿って移動させることで摩擦撹拌接合を行う。   The joining tool 5 operates in the vertical direction (here, the z direction in FIG. 9) with respect to the joining tool holding unit 12 by the ball screw 4, similarly to the configuration of FIG. 1. The joining tool 5 includes a joining head 5a, a shoulder 5b, and a joining pin 5c. The joining tool 5 is inserted into a member to be joined to a predetermined depth while rotating the joining pin 5c, and is moved along the joining line to perform friction stir welding. Do.

保持部11の反対側の端部には、押圧力受け部10が連結部(ジョイント)13c,13dにより連結されている。球状回転体(トラックボール)6は、押圧力受け部10の接合ツール5(接合ピン5c)と対向する位置に配置され、球状回転体押え7により押圧力受け部10に保持されている。押圧力受け部10には球状回転体6が配置される凹部(図示せず)が設けられている。また、押圧力受け部10には球状回転体6を回転させる回転機構(図示せず)が設けられている。凹部と回転機構については、上記の各実施例で説明したものと同様であり、詳細な説明を省略する。   The pressing force receiving portion 10 is connected to the opposite end of the holding portion 11 by connecting portions (joints) 13c and 13d. The spherical rotating body (trackball) 6 is disposed at a position facing the joining tool 5 (joining pin 5 c) of the pressing force receiving portion 10, and is held by the pressing force receiving portion 10 by the spherical rotating body presser 7. The pressing force receiving portion 10 is provided with a recess (not shown) in which the spherical rotating body 6 is disposed. The pressing force receiving part 10 is provided with a rotating mechanism (not shown) for rotating the spherical rotating body 6. The recess and the rotation mechanism are the same as those described in the above embodiments, and detailed description thereof is omitted.

以上説明したように、本実施例の摩擦撹拌接合装置とC型フレームでは、C型フレームが押圧力受け部10、保持部11、接合ツール保持部12の各ユニットから構成されており、被接合部材の形状や大きさ、配置位置に応じて、押圧力受け部10と接合ツール保持部12を別のユニットに交換することで、逃げ量(図9中の距離C)を調整し、摩擦撹拌接合が可能になる。   As described above, in the friction stir welding apparatus and the C-type frame of the present embodiment, the C-type frame is composed of the pressing force receiving portion 10, the holding portion 11, and the welding tool holding portion 12 and is joined. According to the shape, size, and position of the member, the amount of relief (distance C in FIG. 9) is adjusted by replacing the pressing force receiving portion 10 and the welding tool holding portion 12 with different units, and friction stirring is performed. Joining becomes possible.

なお、本実施例においても、図9中の補助線Bで示すように、球状回転体6の頂点(図9中の黒点)と接合ツールの先端部が略同軸上(略同一直線上)に位置するように球状回転体6を押圧力受け部10に設けるのが好適である。言い換えると、接合ツール5の中心点の延長線上に球状回転体6の頂点(中心点)が位置するように接合ツール5が保持されるのが望ましい。   Also in this embodiment, as indicated by the auxiliary line B in FIG. 9, the apex of the spherical rotating body 6 (black point in FIG. 9) and the tip of the welding tool are substantially coaxial (on substantially the same straight line). It is preferable to provide the spherical rotating body 6 in the pressing force receiving portion 10 so as to be positioned. In other words, it is desirable that the welding tool 5 is held such that the vertex (center point) of the spherical rotating body 6 is positioned on the extended line of the center point of the welding tool 5.

他の実施例と同様に、摩擦撹拌接合する際、被接合部材は接合ツール5(接合ピン5c)と球状回転体6の間に配置されて接合ツール5(接合ピン5c)からの押圧力を受けるが、球状回転体6の頂点(図9中の黒点)でその反力を受けることができ、被接合部材の不必要な変形を防ぐことができ、なお且つ、接合ツール5(接合ピン5c)を連続的に滑らかに移動させることができる。   As in the other embodiments, when performing friction stir welding, the members to be joined are arranged between the joining tool 5 (joining pin 5c) and the spherical rotating body 6 to apply a pressing force from the joining tool 5 (joining pin 5c). However, the reaction force can be received at the top of the spherical rotating body 6 (black point in FIG. 9), unnecessary deformation of the member to be joined can be prevented, and the joining tool 5 (joining pin 5c). ) Can be moved continuously and smoothly.

図10は図9の変形例である。図10に示すように、押圧力受け部10に所望の高さを有する台座14を追加し、台座14に球状回転体6と球状回転体押え7を設けることで、接合ツール5(接合ピン5c)と球状回転体6の距離(図10中の距離D)を被接合部材の大きさや厚みに応じて変更することができる。   FIG. 10 is a modification of FIG. As shown in FIG. 10, a base 14 having a desired height is added to the pressing force receiving portion 10, and a spherical rotary body 6 and a spherical rotary body presser 7 are provided on the base 14. ) And the spherical rotating body 6 (distance D in FIG. 10) can be changed according to the size and thickness of the member to be joined.

図11は図9のさらに別の変形例である。図11に示すように、押圧力受け部10に追加する台座を被接合部材の形状や配置位置に応じてフック状台座15とすることで、被接合部材の形状や配置位置によりC型フレームを挿入する際に障害物があるような場合でも、摩擦撹拌接合が可能になる。   FIG. 11 shows still another modification of FIG. As shown in FIG. 11, the pedestal added to the pressing force receiving portion 10 is a hook-shaped pedestal 15 according to the shape and arrangement position of the member to be joined, so that the C-shaped frame can be changed depending on the shape and arrangement position of the member to be joined. Friction stir welding is possible even when there are obstacles during insertion.

図12および図13を参照して、実施例6の摩擦撹拌接合方法について説明する。図12は実施例1の図1で説明した摩擦撹拌接合装置を用いて自動車のボディのように湾曲した三次元曲線を有する被接合部材同士を摩擦撹拌接合する様子を模式的に示している。図13は図12に示す摩擦撹拌接合方法をフローチャートとして示しており、上記の各実施例で説明した摩擦撹拌接合装置およびC型フレームを用いて行う摩擦撹拌接合の代表的な接合フローである。   With reference to FIGS. 12 and 13, the friction stir welding method of Example 6 will be described. FIG. 12 schematically shows a state where the members to be joined having a three-dimensional curve curved like the body of an automobile are friction stir welded using the friction stir welding apparatus described in FIG. 1 of the first embodiment. FIG. 13 shows the friction stir welding method shown in FIG. 12 as a flowchart, and is a typical joining flow of the friction stir welding performed using the friction stir welding apparatus and the C-shaped frame described in the above embodiments.

先ず、被接合部材16の形状(或いは、大きさや配置位置)に追従して接合ツール(C型フレーム)を移動させる。(ステップS1)接合ツール(C型フレーム)の位置制御は、実施例1で説明したように、摩擦撹拌接合装置の制御装置(図示せず)からの指令(プログラム信号)により多軸ロボット2の動きを制御することで行う。   First, the joining tool (C-shaped frame) is moved following the shape (or size and arrangement position) of the member 16 to be joined. (Step S1) As described in the first embodiment, the position control of the welding tool (C-type frame) is performed by the multi-axis robot 2 according to a command (program signal) from a control device (not shown) of the friction stir welding device. This is done by controlling the movement.

次に、制御装置からの指令(プログラム信号)により被接合部材16の接合部に接合ツール(C型フレーム)を挿入する。(ステップS2)
続いて、制御装置からの指令(プログラム信号)により多軸ロボット2のアーム動作を制御しながら被接合部材16の摩擦撹拌接合を行い、所望の領域の接合が完了した時点で、処理を終了する。(ステップS3)
以上説明したように、本発明の各実施例によれば、三次元空間上に配置された被接合部材を、C型フレームの押圧力受け部において接合ツールの押圧力を受けながら、球状回転体と多軸ロボットのアームの動きにより自在に接合ツールを駆動することが可能となる。
Next, a joining tool (C-type frame) is inserted into the joining portion of the member to be joined 16 according to a command (program signal) from the control device. (Step S2)
Subsequently, friction stir welding of the member to be joined 16 is performed while controlling the arm operation of the multi-axis robot 2 by a command (program signal) from the control device, and the process is terminated when the joining of the desired region is completed. . (Step S3)
As described above, according to each embodiment of the present invention, the member to be joined arranged in the three-dimensional space is subjected to the spherical rotating body while receiving the pressing force of the welding tool at the pressing force receiving portion of the C-shaped frame. And it becomes possible to drive the welding tool freely by the movement of the arm of the multi-axis robot.

これにより、自動車のボディのように立体的に配置され、曲面を含む複雑な形状の被接合部材の摩擦撹拌接合を精度良く行うことができる。   Thereby, the friction stir welding of the to-be-joined member of the complicated shape which is arrange | positioned three-dimensionally like the body of a motor vehicle and includes a curved surface can be performed accurately.

なお、C型フレームの保持部(立上部)の逃げ量は、摩擦撹拌接合を行う際、被接合部材の端部と接合線との距離により定めることとし、予め決定した大きさで固定しても、可変とする構造としてもよい。   The clearance of the holding part (upper part) of the C-shaped frame is determined by the distance between the end of the member to be joined and the joining line when performing friction stir welding, and is fixed at a predetermined size. Alternatively, the structure may be variable.

また、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。   The present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

1…摩擦撹拌接合装置、2…多軸ロボット、2a…台座部、2b…下腕部、2c…上腕部、2d…手首部、3…C型フレーム、3a…保持部(立上部)、3b…接合ツール保持部、3c…押圧力受け部、4…昇降装置(ボールスクリュー)、5…接合ツール、5a…接合ヘッド、5b…ショルダ、5c…接合ピン、6…球状回転体(トラックボール)、7,7a,7b,7c,7d,7e,7f,7g,7h…球状回転体押え、8…軸受材、8a…滑り軸受、8b…転がり軸受、9a,9b…ボルト、10…押圧力受け部、11…保持部、12…接合ツール保持部、13a,13b,13c,13d…連結部(ジョイント)、14…台座、15…フック状台座、16…被接合部材。   DESCRIPTION OF SYMBOLS 1 ... Friction stir welding apparatus, 2 ... Multi-axis robot, 2a ... Base part, 2b ... Lower arm part, 2c ... Upper arm part, 2d ... Wrist part, 3 ... C-type frame, 3a ... Holding part (upper part), 3b ... Joining tool holding part, 3c ... Pressing force receiving part, 4 ... Elevating device (ball screw), 5 ... Joining tool, 5a ... Joining head, 5b ... Shoulder, 5c ... Joining pin, 6 ... Spherical rotating body (trackball) 7, 7 a, 7 b, 7 c, 7 d, 7 e, 7 f, 7 g, 7 h... Spherical rotating body presser, 8... Bearing material, 8 a... Sliding bearing, 8 b ... rolling bearing, 9 a, 9 b. Reference numerals 11, 11, holding parts, 12, joining tool holding parts, 13 a, 13 b, 13 c, 13 d, connecting parts (joints), 14, pedestal, 15, hook-shaped pedestal, 16, members to be joined.

Claims (15)

被接合部材同士を摩擦撹拌接合により接合する摩擦撹拌接合装置であって、
複数の関節を有し、三次元空間を自在に移動可能な多軸ロボットアームと、
前記多軸ロボットアームの先端に接続される保持部と、
前記保持部の一端に接続され、上下動機構を介して接合ツールを保持する接合ツール保持部と、
前記保持部の他端に接続され、前記接合ツールからの押圧力を受け止める押圧力受け部と、
前記押圧力受け部の前記接合ツールと対向する位置に設けられる凹部に配置される球状回転体と、
所定の幅で形成されて、前記凹部の開口部の縁またはその外側で一端が接続され、他端が開放されて、前記球状回転体の直径よりも内側で、且つ前記球状回転体と接触せずに前記球状回転体の頂点よりも下側に設けられる球状回転体押えと、
を備えることを特徴とする摩擦撹拌接合装置。
A friction stir welding apparatus for joining members to be joined by friction stir welding,
A multi-axis robot arm having a plurality of joints and freely moving in a three-dimensional space;
A holding part connected to the tip of the multi-axis robot arm;
A joining tool holding part connected to one end of the holding part and holding the joining tool via a vertical movement mechanism;
A pressing force receiving portion connected to the other end of the holding portion and receiving a pressing force from the joining tool;
A spherical rotating body disposed in a recess provided at a position facing the joining tool of the pressing force receiving portion;
It is formed with a predetermined width, and one end is connected at the edge of the opening of the recess or the outside thereof, the other end is opened, and the inside of the diameter of the spherical rotating body is in contact with the spherical rotating body. Spherical rotary body presser provided below the top of the spherical rotary body without,
A friction stir welding apparatus comprising:
請求項1に記載の摩擦撹拌接合装置であって、
前記接合ツールの中心点の延長線上に前記球状回転体の頂点が位置することを特徴とする摩擦撹拌接合装置。
The friction stir welding apparatus according to claim 1,
The friction stir welding apparatus, wherein a vertex of the spherical rotating body is located on an extension line of a center point of the welding tool.
請求項1または2に記載の摩擦撹拌接合装置であって、
前記球状回転体は、前記押圧力受け部に設けられる凹部、前記押圧力受け部に接続された台座に設けられる凹部、前記押圧力受け部に接続されたフック状台座に設けられる凹部のいずれかに配置されることを特徴とする摩擦撹拌接合装置。
The friction stir welding apparatus according to claim 1 or 2,
The spherical rotating body is one of a recess provided in the pressing force receiving portion, a recess provided in a pedestal connected to the pressing force receiving portion, and a recess provided in a hook-shaped pedestal connected to the pressing force receiving portion. A friction stir welding apparatus characterized by being arranged in
請求項1から3のいずれか1項に記載の摩擦撹拌接合装置であって、
前記球状回転体押えは、前記球状回転体を挟んで対向配置され、少なくとも一対以上備えることを特徴とする摩擦撹拌接合装置。
The friction stir welding apparatus according to any one of claims 1 to 3,
2. The friction stir welding apparatus according to claim 1, wherein the spherical rotary body presser is disposed so as to face the spherical rotary body and includes at least one pair.
請求項1から3のいずれか1項に記載の摩擦撹拌接合装置であって、
前記球状回転体押えは、前記球状回転体の周囲を囲むように環状に形成されていることを特徴とする摩擦撹拌接合装置。
The friction stir welding apparatus according to any one of claims 1 to 3,
The spherical rotating body presser is formed in an annular shape so as to surround the spherical rotating body.
請求項1から5のいずれか1項に記載の摩擦撹拌接合装置であって、
前記球状回転体押えは、接続される端部よりも開放される端部が前記球状回転体の方向に直線状に所定の角度をもって傾斜し、
前記開放される端部は、前記球状回転体の表面と所定の間隙を有することを特徴とする摩擦撹拌接合装置。
The friction stir welding apparatus according to any one of claims 1 to 5,
The spherical rotating body presser is inclined at a predetermined angle linearly in the direction of the spherical rotating body, with the open end rather than the connected end.
The friction stir welding apparatus according to claim 1, wherein the opened end portion has a predetermined gap from the surface of the spherical rotating body.
請求項1から5のいずれか1項に記載の摩擦撹拌接合装置であって、
前記球状回転体押えは、前記球状回転体に対して所定の曲率を有して前記球状回転体方向に湾曲して形成されており、
前記開放される端部は、前記球状回転体の表面と所定の間隙を有することを特徴とする摩擦撹拌接合装置。
The friction stir welding apparatus according to any one of claims 1 to 5,
The spherical rotary body presser has a predetermined curvature with respect to the spherical rotary body and is formed by bending in the spherical rotary body direction,
The friction stir welding apparatus according to claim 1, wherein the opened end portion has a predetermined gap from the surface of the spherical rotating body.
請求項1から5のいずれか1項に記載の摩擦撹拌接合装置であって、
前記球状回転体押えは、前記接続される端部と前記開放される端部との間で屈曲し、当該屈曲部から前記開放された端部までの間は、前記球状回転体方向に所定の角度をもって傾斜し、
前記開放される端部は、前記球状回転体の表面と所定の間隙を有することを特徴とする摩擦撹拌接合装置。
The friction stir welding apparatus according to any one of claims 1 to 5,
The spherical rotating body presser is bent between the connected end and the opened end, and a predetermined distance in the direction of the spherical rotating body is provided between the bent portion and the opened end. Inclined at an angle,
The friction stir welding apparatus according to claim 1, wherein the opened end portion has a predetermined gap from the surface of the spherical rotating body.
請求項3に記載の摩擦撹拌接合装置であって、
前記球状回転体押えは、固定部材により、前記押圧力受け部、前記台座、前記フック状台座のいずれかに着脱可能に設けられることを特徴とする摩擦撹拌接合装置。
The friction stir welding apparatus according to claim 3,
The spherical rotating body presser is detachably provided on any one of the pressing force receiving portion, the pedestal, and the hook-shaped pedestal by a fixing member.
請求項1から9のいずれか1項に記載の摩擦撹拌接合装置であって、
前記球状回転体を回転させる回転機構を備えることを特徴とする摩擦攪拌接合装置。
The friction stir welding apparatus according to any one of claims 1 to 9,
A friction stir welding apparatus comprising a rotating mechanism for rotating the spherical rotating body.
請求項1から9のいずれか1項に記載の摩擦撹拌接合装置であって、
前記凹部内壁面に軸受材が設けられることを特徴とする摩擦撹拌接合装置。
The friction stir welding apparatus according to any one of claims 1 to 9,
A friction stir welding apparatus, wherein a bearing material is provided on the inner wall surface of the recess.
請求項11に記載の摩擦撹拌接合装置であって、
前記軸受材は、滑り軸受または転がり軸受であることを特徴とする摩擦撹拌接合装置。
The friction stir welding apparatus according to claim 11,
The friction stir welding apparatus according to claim 1, wherein the bearing material is a sliding bearing or a rolling bearing.
被接合部材同士を摩擦撹拌接合により接合する摩擦撹拌接合装置用C型フレームであって、
多軸ロボットアームの先端に接続される保持部と、
前記保持部の一端に接続され、上下動機構を介して接合ツールを保持する接合ツール保持部と、
前記保持部の他端に接続され、前記接合ツールからの押圧力を受け止める押圧力受け部と、
前記押圧力受け部の前記接合ツールと対向する位置に設けられる凹部に配置される球状回転体と、
所定の幅で形成されて、前記凹部の開口部の縁またはその外側で一端が接続され、他端が開放されて、前記球状回転体の直径よりも内側で、且つ前記球状回転体と接触せずに前記球状回転体の頂点よりも下側に設けられる球状回転体押えと、
を備えることを特徴とする摩擦撹拌接合装置用C型フレーム。
A C-shaped frame for a friction stir welding apparatus for joining members to be joined by friction stir welding,
A holding part connected to the tip of the multi-axis robot arm;
A joining tool holding part connected to one end of the holding part and holding the joining tool via a vertical movement mechanism;
A pressing force receiving portion connected to the other end of the holding portion and receiving a pressing force from the joining tool;
A spherical rotating body disposed in a recess provided at a position facing the joining tool of the pressing force receiving portion;
It is formed with a predetermined width, and one end is connected at the edge of the opening of the recess or the outside thereof, the other end is opened, and the inside of the diameter of the spherical rotating body is in contact with the spherical rotating body. Spherical rotary body presser provided below the top of the spherical rotary body without,
A C-type frame for a friction stir welding apparatus, comprising:
請求項13に記載の摩擦撹拌接合装置用C型フレームであって、
前記接合ツールの中心点の延長線上に前記球状回転体の頂点が位置することを特徴とする摩擦撹拌接合装置用C型フレーム。
A C-shaped frame for a friction stir welding apparatus according to claim 13,
A C-shaped frame for a friction stir welding apparatus, wherein an apex of the spherical rotating body is located on an extension line of a center point of the welding tool.
請求項1から12のいずれか1項に記載の摩擦撹拌接合装置を用いて被接合部材同士を摩擦撹拌接合により接合する摩擦撹拌接合方法であって、
前記摩擦撹拌接合装置は、前記多軸ロボットアームの動きを制御する制御部を備え、
前記制御部の指令により前記被接合部材の形状に追従して前記接合ツールを移動するステップと、
前記制御部の指令により前記被接合部材の接合部に前記接合ツールを挿入するステップと、
前記制御部の指令により前記接合ツールの動作を制御しながら前記被接合部材同士を摩擦撹拌接合するステップと、
を有することを特徴とする摩擦撹拌接合方法。
A friction stir welding method for joining members to be joined together by friction stir welding using the friction stir welding apparatus according to any one of claims 1 to 12 ,
The friction stir welding apparatus includes a control unit that controls the movement of the multi-axis robot arm,
Moving the joining tool following the shape of the member to be joined by a command from the control unit;
Inserting the joining tool into the joined portion of the member to be joined according to a command from the control unit;
The step of friction stir welding the members to be joined while controlling the operation of the welding tool according to the command of the control unit,
A friction stir welding method characterized by comprising:
JP2017064553A 2017-03-29 2017-03-29 Friction stir welding apparatus, C-shaped frame for friction stir welding apparatus, friction stir welding method Active JP6239172B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017064553A JP6239172B1 (en) 2017-03-29 2017-03-29 Friction stir welding apparatus, C-shaped frame for friction stir welding apparatus, friction stir welding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017064553A JP6239172B1 (en) 2017-03-29 2017-03-29 Friction stir welding apparatus, C-shaped frame for friction stir welding apparatus, friction stir welding method

Publications (2)

Publication Number Publication Date
JP6239172B1 true JP6239172B1 (en) 2017-11-29
JP2018167274A JP2018167274A (en) 2018-11-01

Family

ID=60477197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017064553A Active JP6239172B1 (en) 2017-03-29 2017-03-29 Friction stir welding apparatus, C-shaped frame for friction stir welding apparatus, friction stir welding method

Country Status (1)

Country Link
JP (1) JP6239172B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11794273B2 (en) 2018-03-29 2023-10-24 Hitachi Power Solutions Co., Ltd. Friction stir welding apparatus and friction stir welding method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109940263A (en) * 2019-04-30 2019-06-28 天津大学 A kind of Three Degree Of Freedom Friction Stir Welding parallel connection head
KR20220053314A (en) * 2020-10-22 2022-04-29 주식회사 엘지에너지솔루션 Ultrasonic Welding Device Comprising Rotatable Anvil and Welding Method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001096377A (en) * 2000-09-14 2001-04-10 Hitachi Ltd Method of friction welding and welded structure
JP2002239756A (en) * 2001-02-14 2002-08-28 Nissan Motor Co Ltd Friction agitation joining method and device for the same
JP2007203326A (en) * 2006-02-01 2007-08-16 Honda Motor Co Ltd Friction stir welding equipment
EP1864747A1 (en) * 2006-06-07 2007-12-12 Abb Ab System and method for frictional stir welding with means for supporting the workpiece during welding moving synchronously with the rotary tool relative to the workpiece
JP2009142845A (en) * 2007-12-13 2009-07-02 Hitachi Ltd Friction stir apparatus and friction stir process
JP2010214401A (en) * 2009-03-16 2010-09-30 Kawasaki Heavy Ind Ltd Apparatus and method for friction stir welding
US8033443B1 (en) * 2010-05-25 2011-10-11 GM Global Technology Operations LLC Anvil with rolling elements for friction stir welding
JP2014128824A (en) * 2012-12-28 2014-07-10 F Tech Inc Friction stir welding apparatus
JP5602248B2 (en) * 2010-12-16 2014-10-08 三菱重工業株式会社 Friction stir spot welding apparatus, member support thereof, and manufacturing method of friction stir spot joined product

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001096377A (en) * 2000-09-14 2001-04-10 Hitachi Ltd Method of friction welding and welded structure
JP2002239756A (en) * 2001-02-14 2002-08-28 Nissan Motor Co Ltd Friction agitation joining method and device for the same
JP2007203326A (en) * 2006-02-01 2007-08-16 Honda Motor Co Ltd Friction stir welding equipment
EP1864747A1 (en) * 2006-06-07 2007-12-12 Abb Ab System and method for frictional stir welding with means for supporting the workpiece during welding moving synchronously with the rotary tool relative to the workpiece
JP2009142845A (en) * 2007-12-13 2009-07-02 Hitachi Ltd Friction stir apparatus and friction stir process
JP2010214401A (en) * 2009-03-16 2010-09-30 Kawasaki Heavy Ind Ltd Apparatus and method for friction stir welding
US8033443B1 (en) * 2010-05-25 2011-10-11 GM Global Technology Operations LLC Anvil with rolling elements for friction stir welding
JP5602248B2 (en) * 2010-12-16 2014-10-08 三菱重工業株式会社 Friction stir spot welding apparatus, member support thereof, and manufacturing method of friction stir spot joined product
JP2014128824A (en) * 2012-12-28 2014-07-10 F Tech Inc Friction stir welding apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11794273B2 (en) 2018-03-29 2023-10-24 Hitachi Power Solutions Co., Ltd. Friction stir welding apparatus and friction stir welding method

Also Published As

Publication number Publication date
JP2018167274A (en) 2018-11-01

Similar Documents

Publication Publication Date Title
JP6239172B1 (en) Friction stir welding apparatus, C-shaped frame for friction stir welding apparatus, friction stir welding method
US7748593B2 (en) Friction stir welding apparatus and method of operating same
JP3400409B2 (en) Joining method and joining device
EP1153694B1 (en) Spot joining method and spot joining device
JP5631162B2 (en) Friction stir welding method
US20170312989A9 (en) Friction Stir Processing Tool Having Non-Circumferential Shoulder and Friction Stir Processing Method Performable Therewith
US11534981B2 (en) Friction stir spot welding apparatus and friction stir spot welding method
JP2010105376A (en) Method and device for resin welding by laser beam
JP5984561B2 (en) Friction stir welding equipment
JP3534735B2 (en) Spot joining system and fixing device
JP2002239756A (en) Friction agitation joining method and device for the same
WO2019189505A1 (en) Friction stir welding device, and friction stir welding method
GB2544189A (en) Friction stir welding machine having a rotatable anvil and associated method
US20210339337A1 (en) Friction stir joining device, method of operating the same and joint structure
JP3109261B2 (en) Laser welding unit
JP2002192359A (en) Friction stirring joining device
JP7452496B2 (en) Bonded body manufacturing method and bonding device
JP6408737B1 (en) Friction stir welding apparatus and friction stir welding method
JP6986651B1 (en) Friction stir welding device, friction stir welding method
JP2018001247A (en) Frictional agitation point joining device and operation method thereof
JP2004337890A (en) Frictional stirring weld device
JP6986647B1 (en) How to insert a robot-type friction stir welding device and its joining tool
JP2022157191A (en) Robotic friction stir welding device and method of inserting weld tool thereof
JPWO2016147983A1 (en) Friction stir welding equipment
JP5988265B2 (en) Metal material joining method and metal material joining device

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20170919

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20171012

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20171024

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20171031

R150 Certificate of patent or registration of utility model

Ref document number: 6239172

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150