JP4940246B2 - Friction stir spot welding equipment - Google Patents

Friction stir spot welding equipment Download PDF

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JP4940246B2
JP4940246B2 JP2008548374A JP2008548374A JP4940246B2 JP 4940246 B2 JP4940246 B2 JP 4940246B2 JP 2008548374 A JP2008548374 A JP 2008548374A JP 2008548374 A JP2008548374 A JP 2008548374A JP 4940246 B2 JP4940246 B2 JP 4940246B2
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friction stir
plate
spot welding
stir spot
rotary shaft
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JP2009521331A (en
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チャン，ウーン−ション
クォン，ヨン−ガク
チュン，チャン−クン
ロー，ティ−サン
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リサーチ インスティチュート オブ インダストリアル サイエンス アンド テクノロジー
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
    • B23K20/126—Workpiece support, i.e. backing or clamping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • B23K20/1265—Non-butt welded joints, e.g. overlap-joints, T-joints or spot welds

Description

本発明は摩擦攪拌点溶接装置に関し、より詳細には、重なっている被加工材及び回転工具の間の摩擦熱を利用して被加工材を接合する摩擦攪拌点溶接装置に関する。   The present invention relates to a friction stir spot welding apparatus, and more particularly to a friction stir spot welding apparatus that joins workpieces using frictional heat between overlapping workpieces and rotating tools.

自動車や航空機などの運送装置、そして建築や土木などの多様な産業分野で、アルミニウムやマグネシウムなどの軽量素材を活用した軽量合金が幅広く使用されている。このような軽量合金を利用して各種機器、構造物などを生産または製作するためには、これら軽量合金を溶接によって接合する場合が頻発する。   Lightweight alloys using lightweight materials such as aluminum and magnesium are widely used in transportation equipment such as automobiles and aircraft, and in various industrial fields such as architecture and civil engineering. In order to produce or manufacture various devices, structures, etc. using such lightweight alloys, the lightweight alloys are frequently joined by welding.

したがって、これら軽量合金を溶接する技術が幅広く研究されており、最近では摩擦攪拌溶接（Ｆｒｉｃｔｉｏｎ Ｓｔｉｒ Ｗｅｌｄｉｎｇ；ＦＳＷ）が紹介されているが、これに関しては、国際公開文献（国際公開番号：ＷＯ９３／１０９３５；出願人：ＴＨＥ ＷＥＬＤＩＮＧ ＩＮＳＴＩＴＵＴＥ）を参照することができる。   Therefore, technologies for welding these lightweight alloys have been extensively studied, and recently, Friction Stir Welding (FSW) has been introduced. In this regard, an international publication (International Publication Number: WO93 / 10935) is introduced. ; Applicant: THE WELDING INSTITUTE).

前記文献を参照して摩擦攪拌溶接技術について簡略に説明すると、前記摩擦攪拌溶接技術は、接合しようとする２つの被加工材を互いに向かい合わせて、接合界面に沿って工具（ｔｏｏｌ）が進む時に発生する摩擦熱及び被加工材の内部で発生する焼成加工現象を利用して、被加工材を接合する方法である。   The friction stir welding technique will be briefly described with reference to the above literature. The friction stir welding technique is a technique in which two workpieces to be joined face each other and a tool advances along a joining interface. This is a method for joining workpieces by utilizing the frictional heat generated and the firing phenomenon occurring inside the workpiece.

そして、最近は、このような摩擦攪拌溶接技術を活用及び改善してより一層発展させようとする努力が行われている。   Recently, efforts have been made to further develop by utilizing and improving such friction stir welding technology.

一例として、前記摩擦攪拌溶接方法から派生した他の溶接方法の１つとして、摩擦攪拌点溶接方法が知られている。   As an example, a friction stir spot welding method is known as one of other welding methods derived from the friction stir welding method.

前記摩擦攪拌点溶接方法は、摩擦攪拌溶接技術の一部分を利用して重畳接合に利用することによって、回転工具を被加工材側に移動させて一点（ｓｐｏｔ）で被加工材を攪拌して溶接する方法である。
このような摩擦攪拌点溶接方法は、抵抗点溶接及び摩擦攪拌溶接を混合した形態であって、前記摩擦攪拌溶接とは異なる溶接方法として認識されている。 In the friction stir spot welding method, a part of the friction stir welding technique is used for superposition joining, and the rotary tool is moved to the work material side to stir the work material at a single spot. It is a method to do.
Such a friction stir spot welding method is a form in which resistance spot welding and friction stir welding are mixed, and is recognized as a welding method different from the friction stir welding.

前記摩擦攪拌点溶接方法を行う溶接装置の１つとして、従来は回転工具を回転させるための駆動機、例えばモータが前記回転工具と同一軸上に設置されて、前記回転工具と共に上下方向に移動するように構成された摩擦攪拌点溶接装置が開示されている。   As one of the welding apparatuses for performing the friction stir spot welding method, conventionally, a driving machine for rotating a rotary tool, for example, a motor is installed on the same axis as the rotary tool, and moves in the vertical direction together with the rotary tool. A friction stir spot welding apparatus configured to do is disclosed.

しかし、前記構成の摩擦攪拌点溶接装置は、負荷重量が大きくなる短所がある。
このような問題点を解決するために、日本公開特許番号２００２-１３７０６７号（以下、「川崎特許」とする）は、回転工具が設置された主軸を回転させるための駆動機を固定フレームに設置して、前記駆動機の駆動軸及び主軸のスピンドルをタイミングベルト（ｔｉｍｉｎｇ ｂｅｌｔ）またはチェーン（ｃｈａｉｎ）で連結した摩擦攪拌点溶接装置を開示している。 However, the friction stir spot welding apparatus having the above-described configuration has a disadvantage that the load weight is increased.
In order to solve such problems, Japanese Patent Publication No. 2002-137067 (hereinafter referred to as “Kawasaki Patent”) installs a driving machine for rotating a spindle on which a rotary tool is installed on a fixed frame. Thus, a friction stir spot welding apparatus is disclosed in which the driving shaft of the driving machine and the spindle of the main shaft are connected by a timing belt or a chain.

このような構成の溶接装置は、前記駆動機の駆動力がタイミングベルトまたはチェーンを通じて主軸のスピンドルに伝達され、それによって前記主軸が回転するので、従来の摩擦攪拌点溶接装置に比べて負荷重量を減少させることができる長所がある。   In the welding apparatus having such a configuration, the driving force of the driving machine is transmitted to the spindle of the main shaft through a timing belt or a chain, and thereby the main shaft rotates. Therefore, the load weight is larger than that of the conventional friction stir spot welding device. There are advantages that can be reduced.

しかし、前記川崎特許の摩擦攪拌点溶接装置は、前記主軸を上下移動させるための駆動力を伝達するのにタイミングベルトまたはチェーンを使用している。   However, the friction stir spot welding device of the Kawasaki patent uses a timing belt or a chain to transmit a driving force for moving the main shaft up and down.

したがって、使用時間が長時間経過すると、タイミングベルトまたはチェーンによる側面荷重によって主軸が変更されたり、タイミングベルトまたはチェーンのスキ間が発生して、前記主軸の高低を精密に制御することができない問題点がある。   Therefore, if the usage time elapses for a long time, the main shaft is changed by the side load of the timing belt or chain, or the gap of the timing belt or chain occurs, so that the height of the main shaft cannot be precisely controlled. There is.

本発明は、前記問題点を解決するためのものであって、負荷重量を減少させることができ、回転工具が装着された主軸の高低を精密に制御することができる摩擦攪拌点溶接装置を提供することを技術的課題にする。   The present invention provides a friction stir spot welding apparatus that can reduce the load weight and can precisely control the height of the main shaft on which the rotary tool is mounted. Making it a technical challenge.

前記目的を達成するために、本発明は、フレーム；上下移送ナットを含んで、前記フレームに上下方向に移動可能に設置されるハウジング；摩擦攪拌点溶接のための回転工具が端部に形成されて、前記ハウジングに設置される回転軸スピンドル；前記回転軸スピンドルを回転させるための駆動力を提供して、前記フレームに固定設置される回転軸駆動機；前記回転軸駆動機の駆動力をスピンドルに伝達する動力伝達部材；前記ハウジングの上下移送ナットにねじ結合される移送スクリュー；及び前記移送スクリューを回転させて、前記回転軸スピンドルと隣接した位置の前記フレームに固定される移送スクリュー駆動機；を含む摩擦攪拌点溶接装置を提供する。   In order to achieve the above object, the present invention provides a frame; a housing including an upper and lower transfer nut, which is movably installed on the frame; a rotary tool for friction stir spot welding is formed at an end. A rotating shaft spindle installed in the housing; providing a driving force for rotating the rotating shaft spindle; and a rotating shaft driver fixedly installed on the frame; a driving force of the rotating shaft drive spindle A transmission screw that is screwed to the upper and lower transfer nuts of the housing; and a transfer screw drive that is fixed to the frame adjacent to the rotary shaft spindle by rotating the transfer screw; A friction stir spot welding apparatus comprising:

本発明を実施する際に、前記フレームには第１プレート乃至第３プレートが形成される。この場合、前記回転軸スピンドルは第１プレートを貫通して設置され、前記ハウジングは第２プレート及び第３プレートを貫通して設置される。   In carrying out the present invention, a first plate to a third plate are formed on the frame. In this case, the rotating shaft spindle is installed through the first plate, and the housing is installed through the second plate and the third plate.

そして、前記回転軸スピンドルと隣接した位置の第１プレートには移送スクリュー駆動機が設置され、この移送スクリュー駆動機に直結駆動される移送スクリューは、第１プレート、上下移送ナット、第２プレート、及び第３プレートを貫通して設置される。   A transfer screw driver is installed on the first plate adjacent to the rotary shaft spindle, and the transfer screw directly connected to the transfer screw driver includes a first plate, an upper and lower transfer nut, a second plate, And installed through the third plate.

また、前記移送スクリュー駆動機と隣接した位置の第１プレートには前記回転軸駆動機が設置される。   In addition, the rotary shaft driver is installed on the first plate adjacent to the transfer screw driver.

一方、前記フレームには被加工材を配置する支持部材が形成される。   On the other hand, a support member for arranging a workpiece is formed on the frame.

そして、前記動力伝達部材はタイミングベルトまたはチェーンからなる。   The power transmission member is a timing belt or a chain.

本発明によれば、回転工具を回転させるための駆動機、例えばモータが前記回転工具と同一軸上に設置されないので、負荷重量が減少する長所がある。   According to the present invention, since a driving machine for rotating a rotary tool, for example, a motor is not installed on the same axis as the rotary tool, there is an advantage that a load weight is reduced.

また、回転工具を上下方向に移動させるための駆動機の駆動力が移送スクリュー及びこのスクリューに結合された移送ナットによって伝達されるので、回転軸スピンドルが変形する問題点が解決されて、回転工具の高低を精密に制御することができる効果がある。   Further, since the driving force of the driving machine for moving the rotary tool in the vertical direction is transmitted by the transfer screw and the transfer nut coupled to the screw, the problem that the rotary shaft spindle is deformed is solved, and the rotary tool There is an effect that it is possible to precisely control the height of the.

以下、添付した図面を参照して、本発明の実施例を説明する。
図１は本発明の一実施例による摩擦攪拌点溶接装置を概略的に示した図面である。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 schematically shows a friction stir spot welding apparatus according to an embodiment of the present invention.

本実施例による摩擦攪拌点溶接装置は、フレーム１０を含む。
前記フレーム１０は、内部が空のボックス形状に形成されて、フレーム１０の内部には第１プレート乃至第３プレート１２、１４、１６が形成される。 The friction stir spot welding apparatus according to this embodiment includes a frame 10.
The frame 10 is formed in an empty box shape, and first to third plates 12, 14, and 16 are formed inside the frame 10.

上側の第１プレート１２には回転軸スピンドル２０が上下方向に貫通して設置され、下側の第２プレート１４及び第３プレート１６には回転軸スピンドル２０を囲むハウジング２２が上下方向に貫通して設置される。   The upper first plate 12 has a rotary shaft spindle 20 penetrating in the vertical direction, and the lower second plate 14 and third plate 16 have a housing 22 surrounding the rotary shaft spindle 20 penetrating in the vertical direction. Installed.

前記ハウジング２２は、フレーム１０の下側壁体１８を貫通して突出し、ハウジング２２の端部側には前記回転軸スピンドル２０と一体に回転する回転工具２４が設置される。
前記回転工具２４は、被加工材（図示せず）の表面に所定の力を加えて回転して、被加工材を接合させる。 The housing 22 protrudes through the lower wall 18 of the frame 10, and a rotating tool 24 that rotates integrally with the rotating shaft spindle 20 is installed on the end side of the housing 22.
The rotary tool 24 applies a predetermined force to the surface of a workpiece (not shown) and rotates to join the workpiece.

そして、前記回転軸スピンドル２０と一定の距離だけ離隔した位置の第１プレート１２には回転軸駆動機３０が固定設置され、回転軸駆動機３０の駆動軸３２及び前記回転軸スピンドル２０は、タイミングベルトまたはチェーン３４などの動力伝達部材によって連結される。   A rotary shaft drive 30 is fixedly installed on the first plate 12 at a predetermined distance from the rotary shaft spindle 20, and the drive shaft 32 of the rotary shaft drive 30 and the rotary shaft spindle 20 are connected to each other at a timing. They are connected by a power transmission member such as a belt or chain 34.

したがって、回転軸駆動機３０が駆動されて駆動軸３２が回転すると、前記駆動軸３２の回転力がタイミングベルトまたはチェーン３４を通じて回転軸スピンドル２０に伝達されて前記回転軸スピンドル２０が回転し、それによって回転工具２４が回転する。   Therefore, when the rotary shaft drive 30 is driven and the drive shaft 32 rotates, the rotational force of the drive shaft 32 is transmitted to the rotary shaft spindle 20 through the timing belt or chain 34, and the rotary shaft spindle 20 rotates. As a result, the rotary tool 24 rotates.

この時、前記ハウジング２２は、回転軸スピンドル２０と共に回転せずに固定状態に維持される。   At this time, the housing 22 is maintained in a fixed state without rotating with the rotary shaft spindle 20.

そして、回転軸スピンドル２０及び回転軸駆動機３０の間の第１プレート１２には移送スクリュー駆動機４０が固定設置され、移送スクリュー駆動機４０には直結駆動方式で駆動される移送スクリュー４２が形成される。   A transfer screw driver 40 is fixedly installed on the first plate 12 between the rotary shaft spindle 20 and the rotary shaft driver 30, and a transfer screw 42 driven by a direct drive system is formed on the transfer screw driver 40. Is done.

この時、前記移送スクリュー４２は、第１プレート乃至第３プレート１２、１４、１６を貫通して設置され、また、ハウジング２２に形成された上下移送ナット２６を貫通して設置される。   At this time, the transfer screw 42 is installed through the first to third plates 12, 14, and 16, and is installed through the vertical transfer nut 26 formed in the housing 22.

したがって、前記移送スクリュー駆動機４０が駆動されて移送スクリュー４２が回転すると、前記ハウジング２２に形成された上下移送ナット２６が上下方向に移動するので、ハウジング２２及びこれと結合された回転軸スピンドル２０が上下方向に移動する。   Therefore, when the transfer screw driver 40 is driven and the transfer screw 42 rotates, the vertical transfer nut 26 formed on the housing 22 moves in the vertical direction, and therefore the housing 22 and the rotary shaft spindle 20 coupled thereto. Moves up and down.

そして、前記フレーム１０の側壁には被加工材（図示せず）を配置するための支持部材５０が設置され、支持部材５０の端部は、前記回転工具２４と向き合うように配置される。   A support member 50 for placing a workpiece (not shown) is disposed on the side wall of the frame 10, and an end portion of the support member 50 is disposed to face the rotary tool 24.

以下、前記構成の摩擦攪拌点溶接装置を利用した溶接方法について説明する。   Hereinafter, a welding method using the friction stir spot welding apparatus having the above configuration will be described.

まず、支持部材５０に被加工材（図示せず）を位置させて、回転軸駆動機３０を作動させる。   First, a workpiece (not shown) is positioned on the support member 50 and the rotary shaft driving machine 30 is operated.

このようにすると、タイミングベルトまたはチェーン３４を通じて回転軸駆動機３０の動力が回転軸スピンドル２０に伝達され、それによって回転工具２４が回転軸スピンドル２０と共に回転する。   In this way, the power of the rotary shaft driving machine 30 is transmitted to the rotary shaft spindle 20 through the timing belt or chain 34, whereby the rotary tool 24 rotates together with the rotary shaft spindle 20.

そして、回転工具２４を回転させる状態で移送スクリュー駆動機４０を作動させると、前記移送スクリュー４２及びこれと結合された上下移送ナット２６の作用によってハウジング２２及び回転軸スピンドル２０が下方向に移動する。   When the transfer screw driver 40 is operated while the rotary tool 24 is rotated, the housing 22 and the rotary shaft spindle 20 are moved downward by the action of the transfer screw 42 and the vertical transfer nut 26 coupled thereto. .

したがって、回転工具２４が被加工材（図示せず）に密着し、回転工具２４が被加工材に密着した状態で回転することによって、回転工具２４及び被加工材の間に摩擦熱が発生し、被加工材が軟化して、被加工材の表面が攪拌される。   Therefore, when the rotary tool 24 is in close contact with a workpiece (not shown) and the rotary tool 24 is rotated in close contact with the workpiece, frictional heat is generated between the rotary tool 24 and the workpiece. The workpiece is softened and the surface of the workpiece is agitated.

本発明の実施例による摩擦攪拌点溶接装置の概略構成図である。It is a schematic block diagram of the friction stir spot welding apparatus by the Example of this invention.

符号の説明Explanation of symbols

１０ フレーム
１２、１４、１６ 第１、第２、第３プレート
１８ 下側壁体
２０ 回転軸スピンドル
２２ ハウジング
２４ 回転工具
２６ 上下移送ナット
３０ 回転軸駆動機
３２ 駆動軸
３４ チェーン
４０ 移送スクリュー駆動機
４２ 移送スクリュー
５０ 支持部材 10 Frame 12, 14, 16 First, second, third plate 18 Lower wall body 20 Rotating shaft spindle 22 Housing 24 Rotating tool 26 Vertical transfer nut 30 Rotating shaft drive 32 Drive shaft 34 Chain 40 Transfer screw drive 42 Transfer Screw 50 support member

Claims (5)

フレーム；
上下移送ナットを含んで、前記フレームに上下方向に移動可能に設置されるハウジング；
摩擦攪拌点溶接のための回転工具が端部に形成されて、前記ハウジングに設置される回転軸スピンドル；
前記回転軸スピンドルを回転させるための駆動力を提供して、前記フレームに固定設置される回転軸駆動機；
前記回転軸駆動機の駆動力をスピンドルに伝達する動力伝達部材；
前記ハウジングの上下移送ナットにねじ結合される移送スクリュー；及び
前記移送スクリューを回転させて、前記回転軸スピンドルと隣接した位置の前記フレームに固定される移送スクリュー駆動機；を含み、
前記フレームには第１プレート乃至第３プレートが形成され、
前記回転軸スピンドルは第１プレートを貫通して設置され、前記ハウジングは第２プレート及び第３プレートを貫通して設置される、摩擦攪拌点溶接装置。 flame;
A housing that is vertically movable on the frame, including a vertical transfer nut;
A rotary shaft spindle installed in the housing with a rotary tool for friction stir spot welding formed at the end;
A rotating shaft driving machine that provides a driving force for rotating the rotating shaft spindle and is fixedly installed on the frame;
A power transmission member for transmitting a driving force of the rotary shaft driving machine to the spindle;
By rotating and said feed screw, the rotation shaft spindle and feed screw driving machine which is fixed to the frame of the adjacent positions; feed screw is screwed into the upper and lower transfer nut of the housing comprises,
A first plate to a third plate are formed on the frame.
The friction stir spot welding apparatus, wherein the rotary shaft spindle is installed through the first plate, and the housing is installed through the second plate and the third plate. 前記フレームには被加工材を配置する支持部材が形成される、請求項１に記載の摩擦攪拌点溶接装置。The friction stir spot welding device according to claim 1 , wherein a support member for disposing a workpiece is formed on the frame. 前記動力伝達部材はタイミングベルトまたはチェーンからなる、請求項１又は２に記載の摩擦攪拌点溶接装置。The friction stir spot welding device according to claim 1 , wherein the power transmission member is formed of a timing belt or a chain. 前記回転軸スピンドルと隣接した位置の第１プレートには移送スクリュー駆動機が設置され、この移送スクリュー駆動機に直結駆動される移送スクリューは、第１プレート、上下移送ナット、第２プレート、及び第３プレートを貫通して設置される、請求項１から請求項３のいずれか一項に記載の摩擦攪拌点溶接装置。A transfer screw driver is installed on the first plate adjacent to the rotary shaft spindle, and the transfer screw directly connected to the transfer screw driver includes a first plate, an upper and lower transfer nut, a second plate, and a second plate. The friction stir spot welding device according to any one of claims 1 to 3, wherein the friction stir spot welding device is installed through three plates. 前記移送スクリュー駆動機と隣接した位置の第１プレートには前記回転軸駆動機が設置される、請求項４に記載の摩擦攪拌点溶接装置。The friction stir spot welding device according to claim 4 , wherein the rotary shaft drive is installed on a first plate adjacent to the transfer screw drive.
JP2008548374A 2005-12-26 2006-11-24 Friction stir spot welding equipment Expired - Fee Related JP4940246B2 (en)

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PCT/KR2006/004968 WO2007074974A1 (en) 2005-12-26 2006-11-24 Apparatus for friction stir spot welding

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CN101389438A (en) 2009-03-18
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