JP2010214388A

JP2010214388A - Method and device for friction pressure welding

Info

Publication number: JP2010214388A
Application number: JP2009061428A
Authority: JP
Inventors: Michihiro Nomura; 光寛野村; Ryoji Tsujino; 良二辻野
Original assignee: Taiyu Co Ltd; Josho Gakuen Educational Foundation; Taiyu KK
Current assignee: Taiyu Co Ltd; Josho Gakuen Educational Foundation; Taiyu KK
Priority date: 2009-03-13
Filing date: 2009-03-13
Publication date: 2010-09-30

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for friction pressure welding, in which high joint strength is obtained by uniformly melting and welding the whole joint surfaces of metal members and metal members of different kinds can be joined by friction pressure welding. <P>SOLUTION: Between the joint surfaces of metal members a, b to be welded, a friction member 4 having a higher melting point and heat resistance than those of the metal members a, b is interposed. Frictional pressure is applied to the friction member 4 while pushing the joint surfaces of both metal members a, b against the friction member 4, and frictional heat is generated in the joint surfaces of both metal members a, b by rotating both metal members a, b or by vibrating the friction member 4. The friction member 4 is pulled out while the joint surfaces of the metal members a, b and the vicinity of the joint surfaces are melted or softened, and an upset pressure is applied to both metal members a, b, to directly press-weld the joint surfaces of both metal members a, b. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明は、二つの金属部材の接合面及び接合面近傍を摩擦熱によって溶融又は軟化させることにより接合する摩擦圧接方法と摩擦圧接装置に関する。 The present invention relates to a friction welding method and a friction welding apparatus for joining two metal members by melting or softening the joining surfaces and the vicinity of the joining surfaces by friction heat.

従来の摩擦圧接方法（例１）は、二つの金属部材の接合面を直接押し当て、両金属部材に摩擦圧力を加えた状態で両金属部材に相対回転を与え、接合面及び接合面近傍を摩擦熱によって溶融又は軟化させた後、両金属部材にアップセット圧力を加えることにより、接合面を接合するようにしている。 In the conventional friction welding method (Example 1), the joint surfaces of two metal members are directly pressed, and frictional pressure is applied to both metal members to give relative rotation to both metal members. After melting or softening by frictional heat, an upset pressure is applied to both metal members to join the joining surfaces.

次に、別の摩擦圧接方法（例２）としては、金属部材の端面相互間に充填材として中間部材を配置し、両金属部材に摩擦圧力を加えた状態で、両金属部材に相対回転を与え、中間部材及び両金属部材の接合面及び接合面近傍を摩擦熱によって溶融又は軟化させた後、両金属部材にアップセット圧力を加えることにより、中間部材を挟んだまま両金属部材の接合面を接合するようにしている（例えば、特許文献１参照）。 Next, as another friction welding method (Example 2), an intermediate member is disposed as a filler between the end surfaces of the metal members, and the frictional pressure is applied to both metal members, and relative rotation is performed on both metal members. After joining or melting the joint surface of the intermediate member and both metal members and the vicinity of the joint surface by frictional heat, an upset pressure is applied to both metal members, so that the joint surfaces of both metal members are sandwiched between the intermediate members Are joined (for example, refer to Patent Document 1).

また、別の摩擦圧接方法（例３）としては、金属部材の端面相互間に充填材として中間部材を配置し、該中間部材を高速回転若しくは高速振動させると共に、金属部材をそれぞれ中間部材に押し当ててその相互にて摩擦圧力を発生させ、次いで、該中間部材の回転若しくは振動を停止させると同時に、両金属部材にアップセット圧力を加えることにより、中間部材を挟んだまま両金属部材を接合するようにしている（例えば、特許文献２、３参照）。 As another friction welding method (example 3), an intermediate member is arranged as a filler between the end faces of the metal member, the intermediate member is rotated or vibrated at high speed, and the metal member is pressed against the intermediate member. Apply friction to each other and then stop the rotation or vibration of the intermediate member, and at the same time apply the upset pressure to both metal members to join both metal members with the intermediate member sandwiched between them. (For example, refer to Patent Documents 2 and 3).

更に、別の摩擦圧接方法（例４）としては、金属製の回転円盤を用い、この回転円盤の両面で外周寄りの位置に金属部材の接合面を押し当て、両金属部材に回転円盤を挟む摩擦圧力を加えた状態で回転円板を回転させることで、両金属部材の接合面及び接合面近傍を摩擦熱によって溶融又は軟化させ、接合面及び接合面近傍が溶融又は軟化すると両金属部材の接合面間から回転円盤を抜き取り、両金属部材の接合面を圧接させてアップセット圧力を加えることにより、接合面を接合するようにしている（例えば、特許文献４参照）。 Further, as another friction welding method (Example 4), a metal rotating disk is used, and the joining surface of the metal member is pressed to a position near the outer periphery on both surfaces of the rotating disk, and the rotating disk is sandwiched between both metal members. By rotating the rotating disk with frictional pressure applied, the joint surfaces of both metal members and the vicinity of the joint surfaces are melted or softened by frictional heat, and when the joint surfaces and the vicinity of the joint surfaces melt or soften, A rotating disk is extracted from between the joining surfaces, and the joining surfaces of both metal members are pressed together and an upset pressure is applied to join the joining surfaces (see, for example, Patent Document 4).

特開２００８−２７２８３４号公報JP 2008-272834 A 特開２００２−６６７５６号公報JP 2002-66756 A 特開２００７−１３６４９９号公報JP 2007-136499 A 特開昭５７−１４９０９９号公報Japanese Patent Laid-Open No. 57-149099

ところで、前者（例１）の摩擦圧接方法は、両金属部材を同軸心状に配置して相対回転させながら、接合面及び接合面近傍を溶融又は軟化させて圧接させるため、接合面における軸心部と外周部での摩擦発熱量にバラツキが生じ、外周部が溶融又は軟化しても軸心部では十分に溶融又は軟化しないため、金属部材の接合面が大型になると、接合面全面を均一に溶着させることができないので接合強度が低下するという問題がある。 By the way, in the former (Example 1), the friction welding method is such that both the metal members are coaxially arranged and relatively rotated, and the joining surface and the vicinity of the joining surface are melted or softened to be in pressure contact. The amount of frictional heat generated between the outer periphery and the outer periphery varies, and even if the outer periphery melts or softens, the shaft center does not melt or soften sufficiently. There is a problem that the bonding strength is lowered because it cannot be welded.

また、２つの金属部材の接合面を直接押し当て、両金属部材に摩擦圧力を加えた状態で両金属部材に相対回転を与え、接合面に摩擦熱を発生させるため、両金属部材の界面での発熱量が同じであり、両金属部材の変形抵抗や融点が大きく異なる場合、両金属部材の溶融又は軟化の程度が異なり、アプセット圧力をかける段階で、一方の金属部材のみが変形し、接合が十分に行われないという問題がある。 In addition, the joint surfaces of the two metal members are directly pressed, and frictional pressure is applied to both metal members to impart relative rotation to both metal members and generate frictional heat on the joint surfaces. If both metal members have the same calorific value, and the deformation resistance and melting point of both metal members differ greatly, the degree of melting or softening of both metal members will be different, and only one of the metal members will be deformed and joined at the stage of applying upset pressure. There is a problem that is not done sufficiently.

さらに、２つの金属部材の接合面を直接押し当て、両金属部材に摩擦圧力を加えた状態で両金属部材に相対回転を与え、接合面に摩擦熱を発生させるため、摩擦圧力による発熱の段階で、金属部材の組み合わせによっては、接合界面に金属間化合物を生ずるため接合が十分に行われないという問題がある。 Furthermore, since the joint surfaces of the two metal members are directly pressed, frictional pressure is applied to both metal members, the two metal members are relatively rotated, and frictional heat is generated on the joint surfaces. However, depending on the combination of the metal members, there is a problem in that bonding is not sufficiently performed because an intermetallic compound is generated at the bonding interface.

また、金属部材の端面同士を直接接触、両金属部材を相対的に回転させることにより摩擦熱を生じさせる方法は、非円形部材を接合する場合、圧接時に金属部材の回転位相を制御しなければ接合した金属部材間に位相ズレが発生することになり、実質的に困難である。 In addition, the method of generating frictional heat by directly contacting the end faces of metal members and rotating both metal members relatively does not control the rotational phase of the metal members during pressure welding. A phase shift occurs between the joined metal members, which is substantially difficult.

また、例２の摩擦圧接方法は、段落［０００８］、［０００９］の課題について、金属部材の接合が困難な組合せのうち、適当な中間材の適用によりある程度の接合が可能となることはあるが、最適な中間材がない場合が多く、一部の解決にとどまっている。さらに［０００７］、［００１０］の課題は未解決のままである。 Further, the friction welding method of Example 2 may be able to be joined to some extent by applying an appropriate intermediate material among the combinations in which joining of metal members is difficult with respect to the problems of paragraphs [0008] and [0009]. However, there are many cases where there is no optimal intermediate material, and only a part of the solutions is available. Furthermore, the problems [0007] and [0010] remain unsolved.

次に、例３の摩擦圧接方法は、上記した段落［０００７］、［００１０］の課題について、解決されるが、段落［０００９］が一部の解決にとどまるとともに、段落［０００８］が全く解決できない。また、接合後中間材が挟まれたままになっているので加工が必要で、工程の増加によるコストアップや作業の煩雑性があり、レールなど複雑な形状の接合に適さない。また、根本的に中間材の異物が両金属部材の間に挟まれた状態にあることから継手の効率は十分でない。 Next, the friction welding method of Example 3 solves the problems of paragraphs [0007] and [0010] described above, but paragraph [0009] is only partially solved and paragraph [0008] is completely solved. Can not. Further, since the intermediate material remains sandwiched after joining, processing is necessary, and there is an increase in cost due to an increase in the number of processes and work complexity, which is not suitable for joining complicated shapes such as rails. Further, since the foreign material of the intermediate material is basically sandwiched between the two metal members, the efficiency of the joint is not sufficient.

次に、例４の摩擦圧接方法は、段落［０００７］、［０００８］、［０００９］、［００１０］の課題は解決に寄与するが、回転円盤の側面で外周寄りの位置に金属部材を押し当てるため、回転円盤の側面に対して金属部材の溶融金属が付着し、回転円盤の側面に付着した溶融金属が金属部材から離れて一回転した後、再び金属部材と回転円盤の間に戻る状態が繰り返され、この付着した溶融金属が空気に触れることで酸化し、これが金属部材の接合面の軟化金属に混入することで、接合強度が低下するという問題がある Next, the friction welding method of Example 4 contributes to the solution of the problems in paragraphs [0007], [0008], [0009], and [0010], but the metal member is pushed to the position near the outer periphery on the side surface of the rotating disk. In order to apply, the molten metal of the metal member adheres to the side surface of the rotating disk, and after the molten metal attached to the side surface of the rotating disk is separated from the metal member and makes one rotation, the state returns to the space between the metal member and the rotating disk again. Is repeated, and the adhered molten metal is oxidized by contact with air, and this is mixed into the softened metal on the joint surface of the metal member, so that there is a problem that the joint strength is lowered.

更に、回転円盤全体の面積が大きくなることから、摩擦発熱の回転円盤による抜熱が大きくなり、金属部材の溶融又は軟化が十分に行われにくいという欠点もある。 Furthermore, since the area of the entire rotating disk is increased, the heat generated by the rotating disk due to frictional heat is increased, and the metal member is not sufficiently melted or softened.

そこで、この発明の課題は、上記のような問題点を解決するため、金属部材の接合面及び接合面近傍全面を均一に溶融又は軟化させることができ、しかも、接合面への酸化物の混入発生がなく、強固な接合強度が得られると共に、形状や大きさにかかわらず、融点や変形抵抗の大きく異なる場合も含んだ異質金属部材の摩擦圧接も可能になる摩擦圧接方法と摩擦圧接装置を提供することにある。 Therefore, in order to solve the above problems, the object of the present invention is to uniformly melt or soften the joint surface of the metal member and the entire vicinity of the joint surface, and to mix the oxide into the joint surface. A friction welding method and a friction welding apparatus capable of friction welding of dissimilar metal members, including cases where the melting point and deformation resistance differ greatly regardless of the shape and size, as well as providing strong bonding strength without occurrence. It is to provide.

上記のような課題を解決するため、第１の方法の発明は、互いに接合せんとする金属部材の接合面間に、この金属部材よりも高融点又は高耐熱性の摩擦部材を介在させ、両金属部材の接合面を摩擦部材に押し当てて摩擦圧力を加えた状態で、前記両金属部材を回転運動させることで両金属部材の接合面に摩擦熱を発生させ、この摩擦熱で金属部材の接合面及び接合面近傍が溶融又は軟化した状態で金属部材間から摩擦部材を抜き取り、両金属部材にアップセット圧力を加えることで接合面を直接圧接し、異物としての摩擦部材を間に挟まない高強度な継手を作成するようにしたものである。 In order to solve the above problems, the invention of the first method is to interpose a friction member having a higher melting point or higher heat resistance than the metal member between the joining surfaces of the metal members to be joined to each other. In a state where the joint surface of the metal member is pressed against the friction member and friction pressure is applied, the two metal members are rotated to generate friction heat on the joint surfaces of the two metal members. With the joint surface and the vicinity of the joint surface melted or softened, the friction member is extracted from between the metal members, and the joint surface is directly pressed by applying upset pressure to both metal members, and the friction member as a foreign object is not sandwiched between them. A high-strength joint is created.

第２の方法の発明は、互いに接合せんとする金属部材の接合面間に、この金属部材よりも高融点又は高耐熱性の摩擦部材を介在させ、両金属部材の接合面を摩擦部材に押し当てて摩擦圧力を加えた状態で、前記摩擦部材を往復運動させることで両金属部材の接合面に摩擦熱を発生させ、この摩擦熱で金属部材の接合面及び接合面近傍が溶融又は軟化した状態で金属部材間から摩擦部材を抜き取り、両金属部材にアップセット圧力を加えることで接合面を圧接するようにしたものである。 According to the second method of the present invention, a friction member having a higher melting point or higher heat resistance than the metal member is interposed between the joining surfaces of the metal members to be joined to each other, and the joining surfaces of the two metal members are pushed to the friction member. With the friction pressure applied, the friction member is reciprocated to generate frictional heat on the joint surfaces of both metal members, and the frictional heat melts or softens the joint surfaces of the metal members and the vicinity of the joint surfaces. In this state, the friction member is extracted from between the metal members, and an upset pressure is applied to both metal members so that the joint surfaces are pressed.

上記摩擦部材を往復運動させることで両金属部材の接合面に摩擦熱を発生させるとき、両金属部材の何れか一方又は両方に回転を与えるようにすることができる。 When frictional heat is generated on the joint surface between the two metal members by reciprocating the friction member, rotation can be applied to one or both of the two metal members.

また、上記摩擦部材の往復運動が直線的な往復運動又は揺動による往復運動であり、この摩擦部材の両側が、摩擦特性の異なる部材とすることで、材質の異なる金属部材の摩擦圧接が可能になる。 Further, the reciprocating motion of the friction member is a linear reciprocating motion or a reciprocating motion by swinging, and friction welding of metal members of different materials is possible by making the both sides of the friction member have different friction characteristics. become.

更に、上記摩擦発熱工程からアップセット圧力工程への移行が、金属部材の摩擦溶融もしくは軟化箇所の発熱量又は、金属部材に生じる摩擦寄り代量の変化をもとに、自動的に切り換えるようにすることができる。 Furthermore, the transition from the frictional heat generation step to the upset pressure step is automatically switched based on the change in the amount of heat generated at the frictional melting or softening point of the metal member or the amount of frictional deviation generated in the metal member. can do.

また、装置の発明は、互いに接合せんとする金属部材を両部材の接合面が対向するようそれぞれ固持するチャック部材を、固持した両金属部材に摩擦圧力とアップセット圧力を加えることができる接近離反動自在に配置し、前記両チャック部材の対向面間に位置させる摩擦部材を金属部材よりも高融点又は高耐熱性の材料を用いて形成し、この摩擦部材を前記両チャック部材間に対して進退動自在となるよう配置し、前記摩擦部材に往復運動付与機構で往復運動を付与するようにしたものである。 Further, the invention of the apparatus is such that a chuck member that holds a metal member to be bonded to each other so that the bonding surfaces of both members are opposed to each other can apply a friction pressure and an upset pressure to both the held metal members. A friction member that is arranged to be recoilable and is positioned between the opposing surfaces of the chuck members is formed using a material having a higher melting point or higher heat resistance than the metal member, and the friction member is disposed between the chuck members. The reciprocating motion is provided to the friction member by a reciprocating motion imparting mechanism.

上記チャック部材が、固持した金属部材に回転を与えるよう回転駆動機で回転が付与されるようにし、上記摩擦部材の両側が、摩擦特性の異なる摩擦面になっているようにしたり、前記摩擦部材の往復運動付与機構が、摩擦部材に直線的な往復運動又は揺動による往復運動を付与するように形成され、これら往復運動の周期が、１〜１００〔ＫＨｚ〕になっているようにすることができる。 The chuck member is rotated by a rotary drive so as to rotate the held metal member, and both sides of the friction member have friction surfaces with different friction characteristics, or the friction member The reciprocating motion imparting mechanism is formed so as to impart a linear reciprocating motion or a reciprocating motion by swinging to the friction member, and the period of the reciprocating motion is 1 to 100 [KHz]. Can do.

また、上記両チャック部材の対向面間に位置させる摩擦部材が、後端を支点に上下に揺動可能となる揺動アームの先端に上下に揺動可能に取付けられ、この揺動アームに前記摩擦部材を上下に揺動させる往復運動付与手段を設け、前記揺動アームに、摩擦部材を両金属部材の接合面間に対して出し入れする引き抜き機構を連動させた構造とすることができる。 A friction member positioned between the opposed surfaces of the chuck members is attached to the tip of a swing arm that can swing up and down with the rear end as a fulcrum, and is attached to the swing arm. A reciprocating motion imparting means for swinging the friction member up and down can be provided, and a pulling mechanism for moving the friction member into and out of the joint surface of both metal members can be linked to the swing arm.

更に、上記両チャック部材の対向面間に位置させる摩擦部材が、後端を支点に上下に揺動可能となる揺動アームの先端側に前後方向の移動が可能に取付けられ、この揺動アームに前記摩擦部材を直線的に前後動させる往復運動付与手段を設け、前記揺動アームに、摩擦部材を両金属部材の接合面間に対して出し入れする引き抜き機構を連動させた構造としてもよい。 Further, the friction member positioned between the opposing surfaces of the chuck members is attached to the front end side of the swing arm which can swing up and down with the rear end as a fulcrum. Further, a reciprocating motion applying means for linearly moving the friction member back and forth may be provided, and a structure in which a pulling mechanism for moving the friction member into and out of the joint surface of both metal members is interlocked with the swing arm.

また、上記両チャック部材の対向面間に位置させる摩擦部材が、前記金属部材の軸方向に移動可能に配置されているようにすることができる。 Moreover, the friction member located between the opposing surfaces of both the chuck members can be arranged to be movable in the axial direction of the metal member.

ここで、摩擦圧接装置における摩擦部材の往復運動付与機構は、摩擦部材振動用モータの回転をクランク機構やリンク機構、カム機構を用い、摩擦部材に直進や揺動の往復運動を与えるように形成され、この摩擦部材は接合せんとする金属部材よりも高融点又は高耐熱性の材料を用いることになるが、異質の金属部材を接合させる場合、一方金属部材に対応する高融点又は高耐熱性の材料と他方金属部材に対応する高融点又は高耐熱性の材料を重ね合わせた構造とすることができる。 Here, the reciprocating motion imparting mechanism of the friction member in the friction welding apparatus is formed so that the friction member vibration motor is rotated by using a crank mechanism, a link mechanism, or a cam mechanism so that the friction member is reciprocated linearly or swinging. However, this friction member uses a material having a higher melting point or higher heat resistance than the metal member to be joined. However, when joining a foreign metal member, the high melting point or higher heat resistance corresponding to the metal member is used. This material and a high melting point or high heat resistant material corresponding to the other metal member can be laminated.

上記した一対のチャック部材は、ベース支持台上に水平状態で対向するよう同軸心状に配置され、一方のチャック部材はベース支持台上の定位置に回転可能となるよう支持され、トルク計やクラッチを介して回転摩擦モータで駆動されるようになっている。 The pair of chuck members described above are arranged coaxially so as to face each other on the base support base in a horizontal state, and one chuck member is supported so as to be rotatable at a fixed position on the base support base, It is driven by a rotary friction motor via a clutch.

また、他方のチャック部材はベース支持台に設けた移動テーブルの上に回転可能となるよう支持され、移動テーブルの上に設けたトルク計やクラッチを介して回転摩擦モータで駆動されるようになっており、前記移動テーブルは、ベース支持台との間に設けた送り機構とこれを駆動するアップセットモータによって、一方のチャック部材に対する進退動が付与されるようになっている。 The other chuck member is supported on a movable table provided on the base support so as to be rotatable, and is driven by a rotary friction motor via a torque meter and a clutch provided on the movable table. The moving table is adapted to be moved forward and backward with respect to one of the chuck members by a feed mechanism provided between the movable table and a base support and an upset motor that drives the feed mechanism.

上記した摩擦部材の往復運動付与機構は、両チャック部材間の側方でチャックの軸方向に可動となるよう配置したテーブルの上に設けられ、前記摩擦部材は、引き抜き用モータによって往復動させることで、チャック部材の対向面間に出没させるようになっている。 The above-described reciprocating motion imparting mechanism for the friction member is provided on a table arranged so as to be movable in the axial direction of the chuck at the side between both chuck members, and the friction member is reciprocated by a pulling motor. Thus, it is made to appear between the opposing surfaces of the chuck member.

この発明によると、互いに接合せんとする金属部材の接合面間に摩擦部材を介在させ、両金属部材に摩擦圧力を加えた状態で、両金属部材を回転または摩擦部材を往復運動させ、発生した摩擦熱で金属部材の接合面及び接合面近傍が溶融又は軟化した状態で金属部材間から摩擦部材を抜き取り、両金属部材にアップセット圧力を加えることで接合面を圧接するので、金属部材の接合面全面を均一に接合させることができ、摩擦圧接による強固な接合強度が得られることになる。 According to the present invention, the friction member is interposed between the joint surfaces of the metal members to be joined to each other, and both the metal members are rotated or the friction member is reciprocated while the friction pressure is applied to both the metal members. Since the friction member removes the friction member from between the metal members in a state where the joint surface of the metal member and the vicinity of the joint surface are melted or softened by frictional heat, and pressurizes the joint surface by applying upset pressure to both metal members. The entire surface can be bonded uniformly, and a strong bonding strength by friction welding can be obtained.

また、摩擦部材を固定或いは摩擦部材の振幅幅を小さく設定することで、摩擦部材に付着した溶融金属が空気と接触するのを防ぐことができ、これによって接合面への酸化溶融金属の混入発生がなく、摩擦圧接による強固な接合強度が得られることになる。 In addition, by fixing the friction member or setting the amplitude width of the friction member small, it is possible to prevent the molten metal adhering to the friction member from coming into contact with the air, thereby causing the mixed molten metal to enter the joint surface. Thus, a strong bonding strength by friction welding is obtained.

更に、摩擦部材の両側を摩擦特性の異なる摩擦面にし、摩擦部材と金属部材間の発熱量を両側で変えることにより、異質となる金属部材の接合面及び接合面近傍を同じ程度に溶融又は軟化させることができ、異質となる金属部材の摩擦圧接も可能になる。 Furthermore, the friction surfaces with different friction characteristics are used on both sides of the friction member, and the amount of heat generated between the friction member and the metal member is changed on both sides, so that the joint surface of the metal member and the vicinity of the joint surface are melted or softened to the same extent. Thus, friction welding of metal members that are different in quality is also possible.

また、摩擦部材による金属部材の接合面及び接合面近傍を溶融又は軟化させるとき、摩擦部材の往復動と金属部材への回転付与を併用することにより摩擦効率が向上し、金属部材接合面及び接合面近傍の溶融又は軟化が効率的に行えることになる。 In addition, when melting or softening the joining surface and the vicinity of the joining surface of the metal member by the friction member, the friction efficiency is improved by using both the reciprocating motion of the friction member and the rotation imparting to the metal member. The melting or softening in the vicinity of the surface can be performed efficiently.

この発明に係る摩擦圧接装置の第１の例を示す圧接前の正面図The front view before pressure welding which shows the 1st example of the friction welding apparatus which concerns on this invention この発明に係る摩擦圧接装置の第１の例を示す圧接前の平面図The top view before pressure welding which shows the 1st example of the friction welding apparatus which concerns on this invention （ａ）は摩擦圧接装置に組み込む往復運動付与機構の圧接時の状態を示す側面図、（ｂ）は同じく往復運動付与機構の摩擦部材を引き抜いた状態を示す側面図(A) is a side view which shows the state at the time of press-contact of the reciprocating motion provision mechanism incorporated in a friction welding apparatus, (b) is a side view which shows the state which pulled out the friction member of the reciprocating motion provision mechanism similarly. 摩擦圧接装置に組み込む往復運動付与機構の圧接時の状態を示す拡大した側面図Enlarged side view showing the state of pressure contact of the reciprocating motion imparting mechanism incorporated in the friction welding device （ａ）はこの発明に係る摩擦圧接装置の第２の例を示す圧接前の平面図、（ｂ）は同正面図(A) is a top view before pressure welding which shows the 2nd example of the friction welding apparatus based on this invention, (b) is the same front view 摩擦圧接装置に組み込む往復運動付与機構の圧接時の状態を示す側面図Side view showing the state of pressure contact of the reciprocating motion imparting mechanism incorporated in the friction welding device 摩擦圧接装置に組み込む往復運動付与機構の圧接時の状態を示す拡大した側面図Enlarged side view showing the state of pressure contact of the reciprocating motion imparting mechanism incorporated in the friction welding device 摩擦圧接装置に組み込む往復運動付与機構の圧接時の状態を示す拡大した一部切り欠き平面図Enlarged partially cutaway plan view showing the state during pressure welding of the reciprocating motion imparting mechanism incorporated in the friction welding device 摩擦部材による金属部材の摩擦加熱時の状態を示し、（ａ）は金属部材に回転を与えないで加熱する状態の斜視図、（ｂ）は金属部材に回転を与えて加熱する状態の斜視図、（ｂ）は異質金属部材を加熱する状態の斜視図The state at the time of the friction heating of the metal member by a friction member is shown, (a) is a perspective view of the state heated without giving rotation to a metal member, (b) is the perspective view of the state which gives rotation to a metal member and heats it. (B) is a perspective view of the state which heats a foreign metal member 摩擦圧接のプロセスの一例を示す説明図Explanatory drawing showing an example of the friction welding process 摩擦圧接時の鉄筋に生じる摩擦寄り代量の変化の一例を示す説明図Explanatory drawing which shows an example of the change of the friction deviation amount which arises in the reinforcement at the time of friction welding 摩擦部材に付与する往復動の１サイクルでの最大ストロークを示す説明図Explanatory drawing which shows the maximum stroke in 1 cycle of the reciprocating motion provided to a friction member

以下、この発明の実施の形態を添付図面に基づいて説明する。 Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１と２は、この発明の摩擦圧接方法の実施に用いる摩擦圧接装置の第１の例を示し、横長となるベース支持台１の上面に、互いに接合せんとする金属部材ａ、ｂを、接合面が対向するよう同軸心状の配置に固持する一対のチャック部材２、３と、このチャック部材２、３の対向面間に進退自在の配置となり、チャック部材２、３で固持された金属部材ａ、ｂの接合面間に介在させ、往復運動により金属部材ａ、ｂの接合面及び接合面近傍を摩擦熱によって溶融又は軟化させる摩擦部材４と、この摩擦部材４に往復運動を与える往復運動付与機構５を設けて形成されている。 1 and 2 show a first example of a friction welding apparatus used for carrying out the friction welding method of the present invention, and metal members a and b which are joined to each other on the upper surface of a horizontally long base support base 1, A pair of chuck members 2, 3 that are held in a coaxial arrangement so that the joint surfaces face each other, and a metal that is held between the chuck members 2, 3, with a movable arrangement between the opposing surfaces of the chuck members 2, 3. The friction member 4 is interposed between the joining surfaces of the members a and b, and the reciprocating motion melts or softens the joining surfaces of the metal members a and b and the vicinity of the joining surface by friction heat, and the reciprocating motion that gives the friction member 4 a reciprocating motion. The motion imparting mechanism 5 is provided.

上記摩擦部材４は、接合せんとする金属部材ａ、ｂよりも高融点又は高耐熱性の材料を用いて板状に形成され、異質の金属部材ａ、ｂを接合させる場合、一方金属部材ａに対応する高融点又は高耐熱性の材料と他方金属部材ｂに対応する高融点又は高耐熱性の硬質材料を重ね合わせた構造とすることができる。 The friction member 4 is formed in a plate shape using a material having a higher melting point or higher heat resistance than the metal members a and b to be joined, and when different metal members a and b are joined, The high melting point or high heat resistance material corresponding to the above and the high melting point or high heat resistance hard material corresponding to the other metal member b can be laminated.

上記一対のチャック部材２、３は、ベース支持台１上に水平状態で対向するよう同軸心状に配置され、一方のチャック部材２はベース支持台１上に設けた固定テーブル６の上面に軸受機構７で回転可能となるよう定位置に支持され、固定テーブル６に固定した回転摩擦モータ８でトルク計９やクラッチ１０を介して駆動されるようになっている。 The pair of chuck members 2 and 3 are coaxially arranged on the base support 1 so as to face each other in a horizontal state, and one chuck member 2 is bearing on the upper surface of the fixed table 6 provided on the base support 1. It is supported at a fixed position so as to be rotatable by the mechanism 7 and is driven via a torque meter 9 and a clutch 10 by a rotary friction motor 8 fixed to the fixed table 6.

また、他方のチャック部材３は、ベース支持台１にレールでガイドされてチャック部材３の軸方向に移動自在となるよう設けた移動テーブル１１の上に軸受機構１２で回転可能となるよう支持され、移動テーブル１１の上に設けたトルク計１３やクラッチ１４を介して回転摩擦モータ１５で駆動されるようになっており、前記移動テーブル１１は、ベース支持台１との間に設けた回転ねじとナットからなる送り機構１６と、これを駆動するようベース支持台１に固定したアップセットモータ１７によって、一方チャック部材２に対する進退動が付与されるようになっている。 The other chuck member 3 is supported by a bearing mechanism 12 on a moving table 11 that is guided by a rail on the base support 1 and is movable in the axial direction of the chuck member 3. The rotary table 15 is driven by a rotary friction motor 15 via a torque meter 13 and a clutch 14 provided on the moving table 11, and the moving table 11 is provided with a rotating screw provided between the base support 1 and the rotating table 11. A feed mechanism 16 composed of a nut and an upset motor 17 fixed to the base support 1 so as to drive the mechanism 16 is provided to move the chuck member 2 forward and backward.

なお、図示の場合、両チャック部材２と３は共に回転させることができるようにしたが、摩擦部材４による金属部材接合面及び接合面近傍の溶融又は軟化工程時に、金属部材ａ、ｂの材質によって、両チャック部材２と３を回転させないで行ったり、何れか一方のチャック部材２又は３の回転を停止させたりすることができる。 In the illustrated case, both the chuck members 2 and 3 can be rotated together. However, the material of the metal members a and b can be used when the friction member 4 melts or softens the metal member joint surface and the vicinity of the joint surface. Thus, the chuck members 2 and 3 can be rotated without rotating, or the rotation of either one of the chuck members 2 or 3 can be stopped.

上記両チャック部材２と３間の後方に、チャック部材２、３の軸方向に平行する水平のガイド軸１８を設け、このガイド軸１８でテーブル１９を、チャック部材２、３の軸方向、即ち、チャック部材２、３で固持した金属部材ａ、ｂの軸方向に可動となるよう支持し、上記した摩擦部材４の往復運動付与機構５は、前記テーブル１９の上に設けられ、その摩擦部材４は、金属部材ａ、ｂの軸方向に可動となっていると共に、後述する引き抜き用モータによって往復動させることで、チャック部材２と３の対向面間に出没させるようになっている。 A horizontal guide shaft 18 parallel to the axial direction of the chuck members 2 and 3 is provided behind the chuck members 2 and 3, and the table 19 is moved by the guide shaft 18 in the axial direction of the chuck members 2 and 3. The metal members a and b held by the chuck members 2 and 3 are supported so as to be movable in the axial direction, and the reciprocating motion imparting mechanism 5 of the friction member 4 is provided on the table 19, and the friction member 4 is movable in the axial direction of the metal members a and b, and is reciprocated by a pulling motor, which will be described later, so as to be projected and retracted between the opposed surfaces of the chuck members 2 and 3.

図３と図４は、往復運動付与機構５として摩擦部材４を上下の揺動によって往復運動させる構造を示し、テーブル１９の上に設けた水平の支点軸２０に揺動アーム２１の後端を枢止し、支点軸２０を中心に上下に揺動可能にすると共に、この揺動アーム２１の中間部に、往復運動付与手段を構成する偏心回転軸２２及び、この偏心回転軸２２と出力軸を連動した摩擦部材振動用モータ２３を設け、前記揺動アーム２１の先端に前部リンク２４を水平の枢軸２５で上下に揺動自在となるよう取付け、この前部リンク２４の後端と前記偏心回転軸２２をリンク２６で連結し、前記前部リンク２４の先端に、板厚が垂直の配置となる摩擦部材４が前方に向けて突出するよう固定されている。 FIGS. 3 and 4 show a structure in which the friction member 4 is reciprocated by swinging up and down as the reciprocating motion imparting mechanism 5. The rear end of the swing arm 21 is attached to a horizontal fulcrum shaft 20 provided on the table 19. It is pivoted so that it can swing up and down around the fulcrum shaft 20, and an eccentric rotating shaft 22 constituting reciprocating motion imparting means and an eccentric rotating shaft 22 and an output shaft are provided in the middle of the swinging arm 21. A friction member vibration motor 23 is provided in conjunction with each other, and a front link 24 is attached to the tip of the swing arm 21 so as to be swingable up and down by a horizontal pivot 25. The eccentric rotation shaft 22 is connected by a link 26, and the friction member 4 having a vertical thickness is fixed to the front end of the front link 24 so as to protrude forward.

上記摩擦部材４の引き抜き機構は、テーブル１９の前面側下部に固定した摩擦部材引き抜き用モータ２７によって駆動される偏心回転軸２８と、揺動アーム２１の途中下部とを連杆２９で繋ぎ、偏心回転軸２８の回転で揺動アーム２１に上下の揺動を与え、上昇位置と下降位置の何れかに停止させることができるようになっている。 The friction member 4 is pulled out by connecting an eccentric rotating shaft 28 driven by a friction member pulling motor 27 fixed to the lower part on the front side of the table 19 and a lower part of the swing arm 21 by a linkage 29. By rotating the rotary shaft 28, the swing arm 21 is swung up and down, and can be stopped at either the raised position or the lowered position.

上記偏心回転軸２８が上死点にあるとき、図３（ａ）のように、揺動アーム２１は上昇して水平の位相になり、摩擦部材４は揺動アームの水平状態でチャック部材２と３の間に位置し、また、偏心回転軸２８が下死点に回動すると、図３（ｂ）のように、揺動アーム２１は連杆２９で引き下げられて前方下がりに傾斜し、摩擦部材４がチャック２と３の間に対して下方に位置することになる。 When the eccentric rotation shaft 28 is at the top dead center, as shown in FIG. 3A, the swing arm 21 is raised to a horizontal phase, and the friction member 4 is in the horizontal state of the swing arm and the chuck member 2 is in the horizontal state. 3 and when the eccentric rotating shaft 28 rotates to the bottom dead center, as shown in FIG. 3B, the oscillating arm 21 is pulled down by the linkage 29 and tilted forward and downward, The friction member 4 is positioned below the space between the chucks 2 and 3.

上記摩擦部材振動用モータ２３を起動すると、偏心回転軸２２の回転でリンク２６が前部リンク２４の後端を前後動させることになり、前部リンク２４は枢軸２５を支点に揺動し、この前部リンク２４の先端に突設した摩擦部材４も枢軸２５を支点に上下に揺動することになる。 When the friction member vibration motor 23 is activated, the link 26 causes the rear end of the front link 24 to move back and forth by the rotation of the eccentric rotation shaft 22, and the front link 24 swings around the pivot 25 as a fulcrum. The friction member 4 protruding from the front end of the front link 24 also swings up and down around the pivot 25 as a fulcrum.

第１の例の摩擦圧接装置は、上記のような構成であり、次にこの摩擦圧接装置を用いた圧接方法を説明する。 The friction welding apparatus of the first example has the above-described configuration. Next, a pressure welding method using this friction welding apparatus will be described.

図１と図２のように、接合せんとする軸状の金属部材ａとｂを離反させたチャック部材２と３で固持し、同軸心状に配置すると共に、揺動アーム２１を図３（ａ）のように摩擦部材引き抜き用モータ２７で水平に保持し、この揺動アーム２１の先端に固定した摩擦部材４を金属部材ａとｂの対向する先端接合面間に位置させる。 As shown in FIG. 1 and FIG. 2, the shaft-like metal members a and b to be joined are fixed by chuck members 2 and 3 separated from each other, arranged coaxially, and the swing arm 21 is shown in FIG. As shown in a), the friction member 4 which is held horizontally by the friction member pulling motor 27 and fixed to the tip of the swing arm 21 is positioned between the opposing tip joint surfaces of the metal members a and b.

この状態でアップセットモータ１７を正回転させ、他方チャック部材３を前進動させて金属部材ｂの先端で摩擦部材４を押すことにより、両金属部材ａ、ｂの接合面で摩擦部材４を挟むことにより、接合面を摩擦部材４に押し当てて摩擦圧力を加えた状態で、摩擦部材振動用モータ２３を起動する。 In this state, the upset motor 17 is rotated forward, the other chuck member 3 is moved forward, and the friction member 4 is pushed by the tip of the metal member b, so that the friction member 4 is sandwiched between the joint surfaces of both the metal members a and b. As a result, the friction member vibration motor 23 is started in a state where the joint surface is pressed against the friction member 4 and the friction pressure is applied.

このとき、摩擦部材４は両金属部材ａ、ｂの軸方向に移動可能になっているので、一方の金属部材ｂの先端で摩擦部材４を押すことにより、両金属部材ａ、ｂの接合面で摩擦部材４を挟むことができる。 At this time, since the friction member 4 is movable in the axial direction of both the metal members a and b, by pressing the friction member 4 with the tip of one metal member b, the joint surface of both the metal members a and b Thus, the friction member 4 can be sandwiched.

上記摩擦部材振動用モータ２３の起動により、揺動アーム２１の先端に固定した摩擦部材４は、図４や図９（ａ）の破線矢印のように上下に揺動し、摩擦部材４に摩擦圧力で圧接されている金属部材ａ、ｂの先端接合面は、揺動する摩擦部材４との摩擦により摩擦熱が発生し、この摩擦熱で金属部材ａ、ｂの接合面及び接合面近傍が所定の溶融又は軟化状態になると、摩擦部材振動用モータ２３を停止させて圧接力を少し減圧すると同時に、摩擦部材引き抜き用モータ２７を起動し、図３（ｂ）のように、揺動アーム２１を連杆２９で引き下げることで前方下がりに傾斜させ、摩擦部材４を金属部材ａとｂの接合面間から抜き取る。 When the friction member vibration motor 23 is started, the friction member 4 fixed to the tip of the swing arm 21 swings up and down as indicated by the broken arrow in FIG. 4 or FIG. Friction heat is generated at the tip joint surfaces of the metal members a and b that are pressed by pressure due to friction with the oscillating friction member 4, and the joint surfaces of the metal members a and b and the vicinity of the joint surfaces are generated by this frictional heat. When the predetermined melted or softened state is reached, the friction member vibration motor 23 is stopped to slightly reduce the pressure contact force, and at the same time, the friction member extraction motor 27 is started, and as shown in FIG. The friction member 4 is pulled out from between the joint surfaces of the metal members a and b.

上記金属部材ａとｂの接合面間から摩擦部材４が抜けると、直ぐにアップセットモータ１７を更に正回転させて一方金属部材ｂを前進させ、両金属部材ａ、ｂの接合面を圧接させてアップセット圧力を加えることにより、溶融又は軟化した両金属部材ａ、ｂの接合面は互いに圧接することになる。 As soon as the friction member 4 comes off between the joint surfaces of the metal members a and b, the upset motor 17 is further rotated forward to advance one metal member b, and the joint surfaces of both metal members a and b are pressed against each other. By applying the upset pressure, the joined surfaces of both the molten or softened metal members a and b are in pressure contact with each other.

両金属部材ａ、ｂの接合面が互いに圧接すると、アップセットモータ１７を停止させ、チャック部材２、３を開いて金属部材ａ、ｂの固持を解き、アップセットモータ１７を逆回転させてチャック部材３を後退位置に戻せば、圧接した金属部材ａ、ｂをチャック部材２と３から取出すことができる。 When the joint surfaces of the two metal members a and b are pressed against each other, the upset motor 17 is stopped, the chuck members 2 and 3 are opened to release the metal members a and b, and the upset motor 17 is rotated in the reverse direction. If the member 3 is returned to the retracted position, the pressed metal members a and b can be taken out from the chuck members 2 and 3.

なお、金属部材ａ、ｂの接合面を溶融又は軟化させる工程時において、一方金属部材ｂを前進させて両金属部材ａ、ｂの接合面を溶融又は軟化させる場合、両金属部材ａ、ｂの接合面が溶融又は軟化して摩擦寄り代が発生し、摩擦部材４は他方金属部材ａの側に移動することになる。 In the process of melting or softening the joint surfaces of the metal members a and b, when one metal member b is advanced to melt or soften the joint surfaces of the two metal members a and b, The joint surface is melted or softened to generate a frictional margin, and the friction member 4 moves to the other metal member a side.

また、金属部材ａ、ｂの接合面を溶融又は軟化させる工程時において、両金属部材ａ、ｂを共に前進させる構造を採用した場合、両金属部材ａ、ｂの摩擦寄り代が摩擦部材４に対して接近することになり、摩擦部材４は定位置に停止のままでよく、従って、両金属部材ａ、ｂを共に前進させるようにした摩擦圧接装置の場合、摩擦部材４は両金属部材ａ、ｂの軸方向に対して固定配置した構造を採用してもよい。 Further, in the process of melting or softening the joint surfaces of the metal members a and b, when a structure in which both the metal members a and b are advanced together is adopted, the frictional margin of both the metal members a and b is changed to the friction member 4. Accordingly, the friction member 4 may remain stopped at a fixed position. Therefore, in the case of the friction welding apparatus in which both the metal members a and b are advanced together, the friction member 4 is the two metal members a. , B may be fixedly arranged in the axial direction.

上記した金属部材ａ、ｂの圧接時において、摩擦部材４との摩擦により金属部材ａ、ｂの接合面及び接合面近傍を溶融又は軟化させる場合に、回転摩擦モータ８と１５を起動させ、図９（ｂ）のように、金属部材ａ、ｂにその軸心を中心とする回転を付与し、摩擦部材４の往復揺動と金属部材ａ、ｂの回転を併用することで摩擦熱の発生効率を向上させ、圧接工程の効率化を図るようにすることができる。 When the metal members a and b are pressed against each other, the frictional motors 8 and 15 are activated when the joining surfaces of the metal members a and b and the vicinity of the joining surfaces are melted or softened by friction with the friction member 4. As shown in FIG. 9 (b), the metal members a and b are rotated around their axial centers, and the friction member 4 reciprocally swings and the metal members a and b rotate together to generate friction heat. The efficiency can be improved and the efficiency of the pressure welding process can be improved.

また、圧接せんとする金属部材ａ、ｂが異質の場合、高融点側の金属部材だけを回転させて両金属部材ａ、ｂの接合面及び接合面近傍の溶融又は軟化状態が同一状態になるようにすることができる。 Further, when the metal members a and b to be pressed are different from each other, only the metal member on the high melting point side is rotated so that the joining surfaces of both the metal members a and b and the melted or softened state in the vicinity of the joining surfaces become the same state. Can be.

更に、摩擦部材は接合せんとする金属部材よりも高融点又は高耐熱性の材料を用いることになるが、圧接せんとする金属部材ａ、ｂが異質の場合、図９（ｃ）に示すように、摩擦部材４の両側が摩擦特性の異なる摩擦面、即ち、一方金属部材ａに対応する高融点又は高耐熱性の材料４ａと他方金属部材ｂに対応する高融点又は高耐熱性の材料４ｂを重ね合わせた二層構造とすることができる。 Further, the friction member uses a material having a higher melting point or higher heat resistance than the metal member to be joined, but when the metal members a and b to be the pressure weld are different, as shown in FIG. Further, both sides of the friction member 4 have friction surfaces having different friction characteristics, that is, a high melting point or high heat resistance material 4a corresponding to one metal member a and a high melting point or high heat resistance material 4b corresponding to the other metal member b. Can be made into a two-layer structure.

上記金属部材ａ、ｂの圧接時において、両金属部材ａ、ｂの接合面の軟化を効率よく行うために、摩擦部材４の往復運動の周期は、１〜１００〔ＫＨｚ〕、また、金属部材ａ、ｂに付与する回転運動は、１〜５，０００ｒｐｍ、両金属部材ａ、ｂに付与する摩擦圧力とアップセット圧力が、５〜１，０００Ｍｐａの範囲に設定するのが好ましい。 In order to efficiently soften the joint surfaces of the metal members a and b when the metal members a and b are pressed, the cycle of the reciprocating motion of the friction member 4 is 1 to 100 [KHz]. The rotational motion applied to a and b is preferably set in the range of 1 to 5,000 rpm, and the friction pressure and the upset pressure applied to both metal members a and b are in the range of 5 to 1,000 MPa.

また、両金属部材ａ、ｂの接合面及び接合面近傍の溶融又は軟化させる摩擦発熱工程からアップセット圧力工程への移行のタイミングは、金属部材ａ、ｂの摩擦軟化箇所の発熱量又は、金属部材ａとｂに生じる摩擦寄り代量の変化をもとに、自動的に切り換えるようにすることができる。 Also, the timing of the transition from the frictional heat generation process for melting or softening the joint surfaces of both metal members a and b to the upset pressure process in the vicinity of the joint surfaces is the amount of heat generated at the friction softening points of the metal members a and b, or the metal Switching can be automatically performed based on a change in the frictional margin amount generated in the members a and b.

図１０は、例えば、直径１０ｍｍの鉄筋を圧接する場合の上記した摩擦圧接のプロセスの一例を示し、両面に鉄筋の接合面を当接させた摩擦部材４の振動が２０００ｒｐｍ、ストローク幅１０ｍｍに達すると、鉄筋と摩擦部材４の面圧を４０Ｍｐａに上昇させて初期予熱を行い、５ｓｅｃ程度の時間経過後に面圧を８０Ｍｐａ程度に上昇させて摩擦発熱を行い、同時に鉄筋の回転を１０ｒｐｍ程度にして鉄筋の接合面を軟化させる。 FIG. 10 shows an example of the above-described friction welding process when a reinforcing bar having a diameter of 10 mm is pressed, for example, and the vibration of the friction member 4 in which the joining surface of the reinforcing bar is brought into contact with both surfaces reaches 2000 rpm and the stroke width reaches 10 mm. Then, the surface pressure of the reinforcing bar and the friction member 4 is increased to 40 Mpa for initial preheating, and after about 5 seconds, the surface pressure is increased to about 80 Mpa to generate frictional heat, and at the same time the rotation of the reinforcing bar is set to about 10 rpm. Soften the rebar joint surface.

上記鉄筋の接合面を摩擦発熱させるとき、摩擦部材４の揺動を高速にすることで摩擦発熱の効率が向上し、又、揺動のストローク幅を小さくすることで、摩擦部材４の面に付着した溶融金属が空気に曝されるのを極力少なくすることができ、接合面が酸化されるのを防ぐことができる。 When the joint surface of the reinforcing bar is heated by friction, the frictional member 4 is increased in efficiency by increasing the swinging speed of the frictional member 4, and the surface of the frictional member 4 is decreased by reducing the swinging stroke width. It is possible to minimize the exposure of the adhered molten metal to the air, and to prevent the joint surface from being oxidized.

鉄筋の接合面が軟化すると、鉄筋の押圧を一時的に停止し、摩擦部材４を速やかに引き抜いて揺動を停止させ、摩擦部材４が抜けると、鉄筋の面圧を１００Ｍｐａ程度の条件に上昇させ、鉄筋の回転を１０ｒｐｍ程度に続けることで鉄筋の圧接を完了する。 When the joint surface of the reinforcing bar softens, the pressing of the reinforcing bar is temporarily stopped, the friction member 4 is quickly pulled out to stop swinging, and when the friction member 4 comes off, the surface pressure of the reinforcing bar increases to a condition of about 100 MPa. The rebar pressure welding is completed by continuing the rotation of the rebar to about 10 rpm.

上記鉄筋の押圧停止から摩擦部材４を引き抜いて本圧接に移行する時間は０．１から０．５ｓｅｃの間で行い、軟化した接合面の酸化を抑制するようにする。 The time for pulling out the friction member 4 from the stop of the reinforcing bar and shifting to the main pressure welding is between 0.1 and 0.5 sec so as to suppress the oxidation of the softened joint surface.

図１１は、摩擦圧接時の鉄筋に生じる摩擦寄り代量の変化の一例を示し、図１１（ａ）の予備摩擦時のように、直径１０ｍｍで長さ１００ｍｍの鉄筋を圧接する場合、摩擦発熱時は図１１（ｂ）のように５ｍｍ程度短くなるまで押圧し、図１１（ｃ）のようにアップセット後は、更に５ｍｍ短くなるまで押圧するようにし、これにより、鉄筋の圧接面近傍はバリの発生のため鉄筋よりも太径になる。 FIG. 11 shows an example of a change in the frictional margin generated in the reinforcing bar during friction welding. When the reinforcing bar having a diameter of 10 mm and a length of 100 mm is pressed as in the preliminary friction of FIG. When pressing, press until it is shortened by about 5 mm as shown in FIG. 11 (b), and press up until it is further shortened by 5 mm after upset as shown in FIG. 11 (c). Due to the generation of burrs, the diameter is larger than that of the reinforcing bars.

なお、両チャック部材２と３を共に回転させることができるようにした構造では、摩擦部材４を停止させた状態で、金属部材ａ、ｂを摩擦部材４に押付けて回転させることにより金属部材の接合面及び接合面近傍を溶融又は軟化させ、この後、金属部材ａ、ｂ間から摩擦部材４を抜き取り、両金属部材ａ、ｂにセットアップ圧力を加え、金属部材ａ、ｂの溶融又は軟化した接合面を直接圧接させる方法を採用することができる。 In the structure in which both chuck members 2 and 3 can be rotated together, the metal members a and b are pressed against the friction member 4 and rotated while the friction member 4 is stopped. The joint surface and the vicinity of the joint surface are melted or softened, and then the friction member 4 is extracted from between the metal members a and b, and the set-up pressure is applied to both the metal members a and b to melt or soften the metal members a and b. A method of directly press-contacting the joint surface can be employed.

次に、図５乃至図８は、摩擦圧接装置の第２の例を示し、往復運動付与機構５ａが摩擦部材４を前後に直線的な往復運動させるようにした構造を有している。なお、第１の例の摩擦圧接装置と同一部分には同一符号を用いて説明する。 Next, FIGS. 5 to 8 show a second example of the friction welding apparatus, which has a structure in which the reciprocating motion applying mechanism 5a linearly reciprocates the friction member 4 back and forth. The same reference numerals are used for the same parts as those of the friction welding apparatus of the first example.

この第２の例の摩擦圧接装置は、ベース台１のテーブル６上に設けた一方チャック部材２を回転しないよう定位置に固定配置し、一方チャック部材２と同軸心で対向する配置となる他方チャック部材３は、軸受３ａで軸方向に可動となるよう支持された水平移動軸３ｂの先端に取付けられ、水平移動軸３ｂを介してテーブル６に固定したアップセットシリンダ３１で、一方チャック部材２に対して進退動するようになっている。 In the friction welding apparatus of the second example, the one chuck member 2 provided on the table 6 of the base table 1 is fixedly arranged at a fixed position so as not to rotate, and the other one is arranged to face the chuck member 2 coaxially. The chuck member 3 is an upset cylinder 31 attached to the tip of a horizontal movement shaft 3b supported so as to be movable in the axial direction by a bearing 3a, and fixed to the table 6 via the horizontal movement shaft 3b. It is designed to move forward and backward.

上記往復運動付与機構５ａは、ベース台１の上で両チャック部材２と３間の後方に、チャック部材２、３の軸方向に平行する支点軸３２を配置し、この支点軸３２に後端を枢止して上下の揺動と軸方向の移動が可能となる揺動アーム３３の一面側に、ホルダー３４をガイドに直線的な前後動可能となる進退軸３５を設け、揺動アーム３３の他面側に往復運動付与手段となる摩擦部材振動用モータ３６を固定し、このモータ３６の出力軸と、前記進退軸３５の後端を偏心回転前後機構３７の前後動軸３８を介して連結し、この進退軸３５の先端に板厚が垂直の配置となる摩擦部材４を前方に向けて突出させるようホルダー３９を用いて固定し、前記摩擦部材振動用モータ３６の回転で進退軸３５とこれに固定した摩擦部材４が一定ストロークを前後に往復動するようにしている。 The reciprocating motion imparting mechanism 5 a has a fulcrum shaft 32 parallel to the axial direction of the chuck members 2, 3 disposed behind the chuck members 2, 3 on the base table 1, and a rear end on the fulcrum shaft 32. Is provided on one surface side of a swing arm 33 which can be pivoted up and down and moved in the axial direction, with a holder 34 as a guide and a linearly movable back and forth shaft 35 which can be moved back and forth. A friction member vibration motor 36 serving as a reciprocating motion imparting means is fixed to the other surface side, and an output shaft of the motor 36 and a rear end of the advance / retreat shaft 35 are connected via a longitudinal movement shaft 38 of an eccentric rotation front / rear mechanism 37. The friction member 4 having a plate thickness disposed perpendicularly to the tip of the advance / retreat shaft 35 is fixed using a holder 39 so as to protrude forward, and the advance / retreat shaft 35 is rotated by the rotation of the friction member vibration motor 36. And the friction member 4 fixed to this makes a certain stroke So that reciprocates after.

なお、上記前後動軸３８には、進退軸３５と摩擦部材４の重量に釣り合うためのバランスウエイト４０が取付けてある。 Note that a balance weight 40 for balancing the weight of the forward / backward shaft 35 and the friction member 4 is attached to the longitudinal movement shaft 38.

上記揺動アーム３３は、先端寄りの下部に固定した二又保持具４１が、ベース台１に対して固定配置した支持軸４２によって支持され、水平状態が保持されると共に、先端下部に引き抜き機構を構成する摩擦部材引き抜き用シリンダ４３がヒンジの枢軸４４を介して連結され、このシリンダ４３を伸縮させることにより、前記摩擦部材４をチャック部材２と３の対向面間に出没させる上昇位置（図７の一点鎖線）と水平の下降位置（図７の実線）の何れかに停止させることができるようになっている。 In the swing arm 33, a bifurcated holder 41 fixed to the lower part near the tip is supported by a support shaft 42 fixedly arranged with respect to the base 1 so that the horizontal state is maintained, and a pulling mechanism is provided at the lower part of the tip. Are connected via a hinge pivot 44, and the cylinder 43 is expanded and contracted to raise and lower the friction member 4 between the opposing surfaces of the chuck members 2 and 3 (see FIG. 7 and a horizontal descending position (solid line in FIG. 7).

第２の例の摩擦圧接装置は、上記のような構成であり、次にこの摩擦圧接装置を用いた圧接方法を説明する。 The friction welding apparatus of the second example is configured as described above. Next, a pressure welding method using this friction welding apparatus will be described.

図５乃至図７のように、接合せんとする金属部材ａとｂを離反させたチャック部材２と３で固持し、同軸心状に配置すると共に、揺動アーム３３を水平に保持し、先端に固定した金属部材ａ、ｂよりも高融点又は高耐熱性の摩擦部材４を金属部材ａとｂの先端間に位置させる。 As shown in FIGS. 5 to 7, the metal members a and b to be joined are held by the chuck members 2 and 3 separated from each other and arranged coaxially, and the swing arm 33 is held horizontally, The friction member 4 having a higher melting point or higher heat resistance than the metal members a and b fixed to each other is positioned between the tips of the metal members a and b.

この状態でアップセットシリンダ３１を伸長させ、他方チャック部材３を前進動させて金属部材ｂの先端で摩擦部材４を押すことにより、両金属部材ａ、ｂの接合面を摩擦部材４に押し当てて摩擦圧力を加えた状態で、摩擦部材振動用モータ３６を起動する。 In this state, the upset cylinder 31 is extended, the other chuck member 3 is moved forward, and the friction member 4 is pushed by the tip of the metal member b, so that the joint surfaces of both the metal members a and b are pressed against the friction member 4. With the friction pressure applied, the friction member vibration motor 36 is started.

上記摩擦部材振動用モータ３６の起動により、揺動アーム３３で保持した摩擦部材４は、図９（ａ）の実線矢印のように前後に進退動し、摩擦部材４に摩擦圧力で圧接されている金属部材ａ、ｂの先端接合面は、進退動する摩擦部材４との摩擦により摩擦熱が発生し、この摩擦熱で金属部材ａ、ｂの接合面及び接合面近傍が所定の溶融又は軟化状態になると、摩擦部材振動用モータ３６を停止させて圧接力を少し減圧させると同時に、摩擦部材引き抜き用シリンダ４３を伸長させ、図７の一点鎖線のように、揺動アーム３３を押し上げることで前方上がりに傾斜させ、摩擦部材４を金属部材ａとｂ間から抜き取る。 As the friction member vibration motor 36 is started, the friction member 4 held by the swing arm 33 moves back and forth as indicated by the solid line arrow in FIG. 9A and is brought into pressure contact with the friction member 4 with friction pressure. The front end joint surfaces of the metal members a and b generate frictional heat due to friction with the advancing and retreating friction member 4, and the joint surfaces of the metal members a and b and the vicinity of the joint surface are melted or softened by the friction heat. When the state is reached, the friction member vibration motor 36 is stopped to slightly reduce the pressure contact force, and at the same time, the friction member pulling cylinder 43 is extended, and the swing arm 33 is pushed up as shown by a one-dot chain line in FIG. The friction member 4 is extracted from between the metal members a and b by inclining forward.

上記金属部材ａとｂ間から摩擦部材４が抜けると、速やかにアップセットシリンダ３１を更に伸長させて金属部材ｂを前進させ、両金属部材ａ、ｂの接合面を圧接させてアップセット圧力を加えることにより、溶融又は軟化した両金属部材ａ、ｂの接合面は互いに圧接されることになる。 When the friction member 4 is removed from between the metal members a and b, the upset cylinder 31 is further extended to advance the metal member b, and the joining surface of both the metal members a and b is pressed to increase the upset pressure. By adding, the joining surfaces of both the molten or softened metal members a and b are pressed against each other.

両金属部材ａ、ｂの接合面が互いに圧接されると、アップセットシリンダ３１を停止させ、チャック部材２、３を開いて金属部材ａ、ｂの固持を解き、アップセットシリンダ３１を収縮させてチャック部材３を後退位置に戻せば、圧接した金属部材ａ、ｂをチャック部材２と３から取出すことができる。 When the joint surfaces of the metal members a and b are pressed against each other, the upset cylinder 31 is stopped, the chuck members 2 and 3 are opened to release the metal members a and b, and the upset cylinder 31 is contracted. When the chuck member 3 is returned to the retracted position, the pressed metal members a and b can be taken out from the chuck members 2 and 3.

なお、第２の例の摩擦圧接装置では、両チャック部材２と３は、図示の場合、回転付与機構を省いたが、上記した金属部材ａ、ｂの圧接時に、第１の例の摩擦圧接装置と同様に、金属部材ａ、ｂに回転を付与するようにすることができ、また、圧接せんとする金属部材ａ、ｂが異質の場合、高融点側の金属部材だけを回転させるようにしたり、摩擦部材４の両側が摩擦特性の異なる摩擦面となる二層構造とすることができる。 In the friction welding apparatus of the second example, the chuck members 2 and 3 omit the rotation imparting mechanism in the case of the illustration, but the friction welding of the first example is performed when the metal members a and b are pressed. As with the device, rotation can be applied to the metal members a and b, and if the metal members a and b to be pressed are different, only the metal member on the high melting point side is rotated. Alternatively, the friction member 4 may have a two-layer structure in which both sides of the friction member 4 have friction surfaces having different friction characteristics.

図１２は、金属部材ａ、ｂの接合面が円形の場合において、摩擦部材４に付与する往復動の１サイクルにおけるストロークの一例を示し、金属部材ａ、ｂにおける接合面の半径をｄとすると、摩擦部材４の１サイクルにおける最大ストロークは２ｄ兀に設定し、摩擦部材４と金属部材ａ、ｂの接合面との接触が常に維持されるように摩擦部材４の大きさに形成すると共に、最小ストロークは０以上に設定する。このような、摩擦部材４の往復動における１サイクルのストロークと摩擦部材４の大きさの関係は、上記第１の例の摩擦圧接装置における摩擦部材４の揺動ストロークにも適用する。 FIG. 12 shows an example of a stroke in one cycle of the reciprocating motion applied to the friction member 4 when the joining surfaces of the metal members a and b are circular, where d is the radius of the joining surface of the metal members a and b. The maximum stroke in one cycle of the friction member 4 is set to 2d 兀, and the friction member 4 is formed in the size of the friction member 4 so that the contact between the friction member 4 and the joining surfaces of the metal members a and b is always maintained. The minimum stroke is set to 0 or more. The relationship between the stroke of one cycle in the reciprocating motion of the friction member 4 and the size of the friction member 4 is also applied to the swing stroke of the friction member 4 in the friction welding apparatus of the first example.

また、上記金属部材ａ、ｂの圧接時における摩擦部材４の前後往復運動の周期や、金属部材ａ、ｂに付与する回転運動、両金属部材ａ、ｂに付与する摩擦圧力とアップセット圧力は、上記第１の例の摩擦圧接装置と同様の範囲に設定すればよく、両金属部材ａ、ｂの接合面及び接合面近傍の溶融又は軟化させる摩擦発熱工程からアップセット圧力工程への移行のタイミングも、金属部材ａ、ｂの摩擦溶融又は軟化箇所の発熱量又は、図１１に示したように、金属部材ａとｂに生じる摩擦寄り代量の変化をもとに、自動的に切り換えるようにすればよい。 Further, the period of the reciprocating motion of the friction member 4 during the pressure contact of the metal members a and b, the rotational motion applied to the metal members a and b, the friction pressure and the upset pressure applied to both the metal members a and b are: It is sufficient to set the same range as the friction welding apparatus of the first example, and the transition from the frictional heat generation process that melts or softens the joint surfaces of both metal members a and b and the vicinity of the joint surfaces to the upset pressure process. The timing is also automatically switched based on the amount of heat generated at the frictional melting or softening points of the metal members a and b or the change in the frictional margin of the metal members a and b as shown in FIG. You can do it.

なお、第１と第２の例の摩擦圧接装置において、圧接せんとする金属部材ａ、ｂの材質は、摩擦熱によって溶融又は軟化するものであればよく、摩擦部材は、金属部材ａ、ｂよりも融点又は耐熱性の高いものであれば材質は限定されないが、摩擦熱の発生効率を高めるには、摩擦係数の高いものを選ぶようにすればよく、また、金属部材ａ、ｂを回転させずに圧接させる場合は、図示例のような軸状の金属部材だけでなく、各種形状の金属部材に対する圧接を行うことができる。 In the friction welding apparatuses of the first and second examples, the material of the metal members a and b used as the press contact may be any material that can be melted or softened by frictional heat, and the friction members are the metal members a and b. The material is not limited as long as it has a higher melting point or heat resistance, but in order to increase the efficiency of generating frictional heat, a material having a high friction coefficient may be selected, and the metal members a and b are rotated. When press-contacting without being performed, not only a shaft-shaped metal member as in the illustrated example but also various metal-shaped metal members can be pressed.

１ベース支持台
２チャック部材
３チャック部材
４摩擦部材
５往復運動付与機構
５ａ往復運動付与機構
６固定テーブル
７軸受機構
８回転摩擦モータ
９トルク計
１０クラッチ
１１移動テーブル
１２軸受機構
１３トルク計
１４クラッチ
１５回転摩擦モータ
１６送り機構
１７アップセットモータ
１８ガイド軸
１９テーブル
２０支点軸
２１揺動アーム
２２偏心回転軸
２３摩擦部材振動用モータ
２４前部リンク
２５枢軸
２６リンク
２７摩擦部材引き抜き用モータ
２８偏心回転軸
２９連杆
３１アップセットシリンダ
３２支点軸
３３揺動アーム
３４ホルダー
３５進退軸
３６摩擦部材振動用モータ
３７偏心回転前後機構
３８前後動軸
３９ホルダー
４０バランスウエイト
４１二又保持具
４２支持軸
４３摩擦部材引き抜き用シリンダ
４４枢軸 DESCRIPTION OF SYMBOLS 1 Base support stand 2 Chuck member 3 Chuck member 4 Friction member 5 Reciprocating motion imparting mechanism 5a Reciprocating motion imparting mechanism 6 Fixed table 7 Bearing mechanism 8 Rotary friction motor 9 Torque meter 10 Clutch 11 Moving table 12 Bearing mechanism 13 Torque meter 14 Clutch 15 Rotational friction motor 16 Feed mechanism 17 Upset motor 18 Guide shaft 19 Table 20 Support shaft 21 Oscillating arm 22 Eccentric rotation shaft 23 Friction member vibration motor 24 Front link 25 Pivot 26 Link 27 Friction member extraction motor 28 Eccentric rotation shaft 29 Link 31 Upset cylinder 32 Supporting shaft 33 Oscillating arm 34 Holder 35 Advance / retract shaft 36 Friction member vibration motor 37 Eccentric rotation front / rear mechanism 38 Front / rear moving shaft 39 Holder 40 Balance weight 41 Two-way holder 42 Support shaft 43 Friction member Pulling cylinder 4 4 Axis

Claims

互いに接合せんとする金属部材の接合面間に、この金属部材よりも高融点又は高耐熱性の摩擦部材を介在させ、両金属部材の接合面を摩擦部材に押し当てて摩擦圧力を加えた状態で、前記両金属部材を回転運動させることで両金属部材の接合面に摩擦熱を発生させ、この摩擦熱で金属部材の接合面及び接合面近傍が溶融又は軟化した状態で金属部材間から摩擦部材を抜き取り、両金属部材にアップセット圧力を加えることで接合面を圧接する摩擦圧接方法。 A friction member having a higher melting point or higher heat resistance than this metal member is interposed between the joint surfaces of the metal members that are to be joined to each other, and the friction surface is applied by pressing the joint surfaces of both metal members against the friction member. Then, the frictional heat is generated on the joint surfaces of the two metal members by rotating both the metal members, and the friction between the metal members is melted or softened by the friction heat in the state where the joint surface of the metal members and the vicinity of the joint surface are melted or softened. A friction welding method in which members are removed and the joint surfaces are pressed by applying upset pressure to both metal members.

互いに接合せんとする金属部材の接合面間に、この金属部材よりも高融点又は高耐熱性の摩擦部材を介在させ、両金属部材の接合面を摩擦部材に押し当てて摩擦圧力を加えた状態で、前記摩擦部材を往復運動させることで両金属部材の接合面に摩擦熱を発生させ、この摩擦熱で金属部材の接合面及び接合面近傍が溶融又は軟化した状態で金属部材間から摩擦部材を抜き取り、両金属部材にアップセット圧力を加えることで接合面を圧接する摩擦圧接方法。 A friction member having a higher melting point or higher heat resistance than this metal member is interposed between the joint surfaces of the metal members that are to be joined to each other, and the friction surface is applied by pressing the joint surfaces of both metal members against the friction member. The friction member generates a frictional heat on the joint surfaces of the two metal members by reciprocating the friction member, and the friction member heats the metal member between the metal members in a state where the joint surface of the metal member and the vicinity of the joint surface are melted or softened. Is a friction welding method in which the joint surfaces are pressed by applying upset pressure to both metal members.

上記摩擦部材を往復運動させることで両金属部材の接合面に摩擦熱を発生させるとき、両金属部材の何れか一方又は両方に回転を与える請求項２に記載の摩擦圧接方法。 3. The friction welding method according to claim 2, wherein when frictional heat is generated on the joint surface between the two metal members by reciprocating the friction member, rotation is applied to one or both of the two metal members.

上記摩擦部材の往復運動が直線的な往復運動又は揺動による往復運動である請求項２又は３に記載の摩擦圧接方法。 4. The friction welding method according to claim 2, wherein the reciprocating motion of the friction member is a linear reciprocating motion or a reciprocating motion by swinging.

上記摩擦部材の両側が、摩擦特性の異なる摩擦面になっている請求項１乃至４の何れかに記載の摩擦圧接方法。 The friction welding method according to claim 1, wherein both sides of the friction member are friction surfaces having different friction characteristics.

上記摩擦発熱工程からアップセット圧力工程への移行が、金属部材の摩擦溶融もしくは軟化箇所の発熱量又は、金属部材に生じる摩擦寄り代量の変化をもとに、自動的に切り換えるようにする請求項１乃至５の何れかに記載の摩擦圧接方法。 The transition from the frictional heat generation step to the upset pressure step is automatically switched based on a change in the amount of heat generated by frictional melting or softening of the metal member or the amount of frictional deviation generated in the metal member. Item 6. The friction welding method according to any one of Items 1 to 5.

互いに接合せんとする金属部材を両金属部材の接合面が対向するようそれぞれ固持し、回転駆動機によって回転が付与される一対のチャック部材を、固持した両金属部材に摩擦圧力とアップセット圧力を加えることができる接近離反動自在に配置し、前記両チャック部材の対向面間に位置させる摩擦部材を前記金属部材よりも高融点又は高耐熱性の材料を用いて形成し、この摩擦部材と前記両チャック部材を、両金属部材の接合面間に対して摩擦部材の進入と抜き取りができるよう、相対的に移動自在となるよう配置した摩擦圧接装置。 The metal members to be joined to each other are fixed so that the joint surfaces of the two metal members face each other, and a pair of chuck members to which rotation is imparted by a rotary drive machine are applied. A friction member that can be added and moved freely is formed and a friction member positioned between opposing surfaces of the chuck members is formed using a material having a higher melting point or higher heat resistance than the metal member. A friction welding apparatus in which both chuck members are arranged so as to be relatively movable so that the friction member can enter and withdraw between the joint surfaces of both metal members.

互いに接合せんとする金属部材を両金属部材の接合面が対向するようそれぞれ固持するチャック部材を、固持した両金属部材に摩擦圧力とアップセット圧力を加えることができる接近離反動自在に配置し、前記両チャック部材の対向面間に位置させる摩擦部材を前記金属部材よりも高融点又は高耐熱性の材料を用いて形成し、この摩擦部材と前記両チャック部材を、両金属部材の接合面間に対して摩擦部材の進入と抜き取りができるよう、相対的に移動自在となるよう配置し、前記摩擦部材に往復運動付与機構で往復運動を付与するようにした摩擦圧接装置。 A chuck member that holds the metal members to be bonded to each other so that the bonding surfaces of both metal members face each other is disposed so as to be able to approach and move apart so that frictional pressure and upset pressure can be applied to both the held metal members, A friction member positioned between the opposing surfaces of the chuck members is formed using a material having a higher melting point or higher heat resistance than the metal member, and the friction member and the chuck members are disposed between the joint surfaces of the metal members. The friction welding apparatus is arranged so as to be relatively movable so that the friction member can enter and withdraw, and the reciprocating motion is applied to the friction member by a reciprocating motion applying mechanism.

上記チャック部材が、固持した金属部材に回転を与えるよう回転駆動機で回転が付与されるようになっている請求項８に記載の摩擦圧接装置。 9. The friction welding apparatus according to claim 8, wherein the chuck member is rotated by a rotary drive so as to apply rotation to the metal member that is held firmly.

上記摩擦部材の両側が、摩擦特性の異なる摩擦面になっている請求項７乃至９の何れかに記載の摩擦圧接装置。 The friction welding apparatus according to any one of claims 7 to 9, wherein both sides of the friction member are friction surfaces having different friction characteristics.

上記摩擦部材の往復運動付与機構が、摩擦部材に直線的な往復運動又は揺動による往復運動を付与するように形成されている請求項８乃至１０の何れかに記載の摩擦圧接装置。 11. The friction welding apparatus according to claim 8, wherein the reciprocating motion applying mechanism of the friction member is formed so as to apply a linear reciprocating motion or a reciprocating motion by swinging to the friction member.

上記両チャック部材の対向面間に位置させる摩擦部材が、後端を支点に上下に揺動可能となる揺動アームの先端に上下に揺動可能に取付けられ、この揺動アームに前記摩擦部材を上下に揺動させる往復運動付与手段を設け、前記揺動アームに、摩擦部材を両金属部材の接合面間に対して出し入れする引き抜き機構を連動させた請求項７乃至１１の何れかに記載の摩擦圧接装置。 A friction member positioned between the opposing surfaces of the chuck members is attached to the tip of a swing arm that can swing up and down with the rear end as a fulcrum, and the friction member is attached to the swing arm. 12. A reciprocating motion imparting means for swinging up and down is provided, and a pulling mechanism for pulling in and out the friction member with respect to the space between the joint surfaces of both metal members is interlocked with the swing arm. Friction welding equipment.

上記両チャック部材の対向面間に位置させる摩擦部材が、後端を支点に上下に揺動可能となる揺動アームの先端側に前後方向の移動が可能に取付けられ、この揺動アームに前記摩擦部材を直線的に前後動させる往復運動付与手段を設け、前記揺動アームに、摩擦部材を両金属部材の接合面間に対して出し入れする引き抜き機構を連動させた請求項７乃至１１の何れかに記載の摩擦圧接装置。 A friction member positioned between the opposing surfaces of both chuck members is attached to the tip side of a swing arm that can swing up and down with the rear end as a fulcrum, and is attached to the swing arm. The reciprocating motion imparting means for linearly moving the friction member back and forth is provided, and the pulling mechanism for taking in and out the friction member with respect to the space between the joint surfaces of both metal members is interlocked with the swing arm. A friction welding apparatus according to claim 1.

上記両チャック部材の対向面間に位置させる摩擦部材が、前記チャック部材の軸方向に移動可能に配置されている請求項７乃至１３の何れかに記載の摩擦圧接装置。 The friction welding apparatus according to any one of claims 7 to 13, wherein a friction member positioned between opposing surfaces of the chuck members is disposed so as to be movable in an axial direction of the chuck member.