JP7721373B2 - Guide block and friction stir welding method - Google Patents
Guide block and friction stir welding methodInfo
- Publication number
- JP7721373B2 JP7721373B2 JP2021146131A JP2021146131A JP7721373B2 JP 7721373 B2 JP7721373 B2 JP 7721373B2 JP 2021146131 A JP2021146131 A JP 2021146131A JP 2021146131 A JP2021146131 A JP 2021146131A JP 7721373 B2 JP7721373 B2 JP 7721373B2
- Authority
- JP
- Japan
- Prior art keywords
- guide block
- workpieces
- contact surface
- contact
- pair
- 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
Links
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
Description
本発明は内隅部摩擦攪拌接合用のガイドブロックおよび摩擦攪拌接合方法に関する。 The present invention relates to a guide block for inner corner friction stir welding and a friction stir welding method.
内隅部を形成する一対の被接合部材に対して摩擦攪拌接合を行う際に、攪拌ピンに三角柱状のベースブロックを装着した内隅接合用回転ツールが用いられている（特許文献１）。
ベースブロックは、攪拌ピンを回転自在に保持してガイドするとともに、一対の傾斜面が一対の被接合部材の表面に各々当接されることで、被接合部材を押さえて浮き上がりや振動を抑制できる。
When performing friction stir welding on a pair of workpieces that form an inner corner, a rotary tool for inner corner welding is used, in which a triangular prism-shaped base block is attached to a stirring pin (Patent Document 1).
The base block rotatably holds and guides the stirring pin, and the pair of inclined surfaces abut against the surfaces of the pair of workpieces, thereby pressing down on the workpieces and preventing them from lifting up or vibrating.
前述した特許文献１の内隅接合用回転ツールは、ベースブロックに形成される一対の傾斜面が平面とされており、一対の被接合部材の表面がそれぞれ平面であれば、各々において互いに面接触することで、被接合部材を押さえて浮き上がりや振動を抑制できる。
しかし、一対の被接合部材の一方だけでも表面が平面でない場合、線接触あるいは点接触となり、被接合部材を押さえて浮き上がりや振動を抑制することが十分にできないことがある。
The rotary tool for joining inner corners described in Patent Document 1 has a pair of inclined surfaces formed on the base block that are flat, and if the surfaces of the pair of workpieces to be joined are each flat, the surfaces will come into surface contact with each other, thereby pressing down on the workpieces to prevent them from lifting up or vibrating.
However, if the surface of even one of the pair of workpieces is not flat, line contact or point contact will occur, and it may not be possible to sufficiently press down on the workpieces to prevent lifting or vibration.
例えば、筒体の端部の内側に筒状の継手を接合する場合、外側の筒体の端面は平面であるが、内側の継手の表面は円筒面となる。このような平面と円筒面とで形成される円環形の内隅部に対して摩擦攪拌接合を行う際に、一対の傾斜面がともに平面である内隅接合用回転ツールを用いた場合、平面である傾斜面が円筒面である継手の表面と面接触できず、線接触することになる。その結果、この接触線を中心にベースブロックが回動可能な不安定な状態となり、被接合部材を押さえて浮き上がりや振動を抑制することが十分にできないことがある。 For example, when joining a cylindrical joint to the inside of the end of a cylinder, the end face of the outer cylinder is flat, but the surface of the inner joint is cylindrical. When performing friction stir welding on an inner corner of a ring-shaped joint formed by such a flat and cylindrical surface, if a rotary tool for joining inner corners, in which both inclined surfaces are flat, is used, the flat inclined surfaces will not be able to make surface contact with the cylindrical joint surface, but will make line contact. As a result, the base block will be in an unstable state where it can rotate around this contact line, and may not be able to adequately hold down the workpieces to prevent lifting or vibration.
本発明の目的は、内隅部を形成する一対の被接合部材の表面が曲面でも一対の被接合部材を押さえて浮き上がりや振動を抑制できるガイドブロックおよび摩擦攪拌接合方法を提供することにある。 The object of the present invention is to provide a guide block and friction stir welding method that can hold down a pair of workpieces, suppressing lifting and vibration, even when the surfaces of the workpieces that form the inner corner are curved.
本発明のガイドブロックは、少なくとも一方の表面が曲面である一対の被接合部材で形成される内隅部に対して摩擦攪拌接合を行う攪拌ピンに装着されるガイドブロックであって、前記攪拌ピンを回転自在に保持するガイド孔と、一対の前記被接合部材の一方に当接する第１当接面と、一対の前記被接合部材の他方に当接する第２当接面と、を有し、少なくとも前記第１当接面が、表面が曲面である一方の前記被接合部材の表面に密接可能な曲面であることを特徴とする。 The guide block of the present invention is a guide block attached to a stirring pin that performs friction stir welding on an inner corner formed by a pair of workpieces, at least one of which has a curved surface. It has a guide hole that rotatably holds the stirring pin, a first contact surface that contacts one of the pair of workpieces, and a second contact surface that contacts the other of the pair of workpieces, and is characterized in that at least the first contact surface is a curved surface that can come into close contact with the surface of one of the workpieces, which has a curved surface.
このような本発明では、攪拌ピンをガイド孔に挿通した状態で攪拌ピンおよびガイドブロックを一対の被接合部材の内隅部に近接させる。そして、第１当接面および第２当接面を一対の被接合部材の各表面に当接させて被接合部材を押さえつつ、回転する攪拌ピンで一対の被接合部材の交差部分を摩擦攪拌接合する。
ここで、本発明では、一対の被接合部材の一方の表面が曲面であっても、この曲面に対して第１当接面が密接して面接触することで、被接合部材を押さえて浮き上がりや振動を抑制することができる。
なお、一対の被接合部材の両方の表面が曲面である場合、第１当接面および第２当接面をそれぞれ一対の被接合部材の表面に対応した曲面とすることで、被接合部材を押さえて浮き上がりや振動を抑制することができる。
In the present invention, the stirring pin and the guide block are brought close to the inner corners of the pair of workpieces with the stirring pin inserted through the guide hole, and the first and second contact surfaces are brought into contact with the surfaces of the pair of workpieces to hold them down, while the rotating stirring pin friction stir welds the intersection of the pair of workpieces.
Here, in the present invention, even if one surface of a pair of workpieces to be joined is curved, the first abutment surface is in close surface contact with this curved surface, thereby pressing down on the workpieces to suppress lifting and vibration.
In addition, if both surfaces of a pair of workpieces to be joined are curved, the first abutment surface and the second abutment surface can be made curved corresponding to the surfaces of the pair of workpieces to press down on the workpieces and suppress lifting and vibration.
本発明のガイドブロックにおいて、前記第１当接面と前記第２当接面とは互いに所定の交差角度で交差しており、前記ガイド孔は前記第１当接面と前記第２当接面との交差部分を貫通していることが好ましい。
第１当接面と第２当接面との交差角度としては、第１当接面および第２当接面の各々に直交する仮想平面において、第１当接面および第２当接面がなす角度とすることができる。または、第１当接面と第２当接面とが接合される接合線に直交する仮想平面において、第１当接面および第２当接面がなす角度としてもよい。
このような本発明では、ガイド孔に挿通された攪拌ピンを、第１当接面と第２当接面との交差部分つまり一対の被接合部材の交差部分に向けて保持することができ、摩擦攪拌接合に適切な状態で攪拌ピンをガイドしつつ、一対の被接合部材を押さえて浮き上がりや振動を抑制することができる。
In the guide block of the present invention, it is preferable that the first abutment surface and the second abutment surface intersect with each other at a predetermined angle, and the guide hole passes through the intersection of the first abutment surface and the second abutment surface.
The intersection angle between the first and second contact surfaces may be an angle formed by the first and second contact surfaces in an imaginary plane perpendicular to each of the first and second contact surfaces, or may be an angle formed by the first and second contact surfaces in an imaginary plane perpendicular to the joining line along which the first and second contact surfaces are joined.
In this invention, the stirring pin inserted into the guide hole can be held facing the intersection of the first abutment surface and the second abutment surface, i.e., the intersection of the pair of workpieces, and the stirring pin can be guided in a state appropriate for friction stir welding while holding down the pair of workpieces to suppress lifting and vibration.
本発明のガイドブロックにおいて、前記第１当接面は円筒面であり、前記第２当接面は平面であることが好ましい。
このような本発明では、例えば、筒体の端部の内側に筒状の継手を接合する際に、外側の筒体の端面と第２当接面とが互いに平面どうしで密接し、内側の継手の表面と第１当接面とが互いに円筒面どうしで密接できる。これにより、ガイドブロックは、外側の筒体の端面および内側の継手の表面に安定的に保持され、一対の被接合部材を押さえて浮き上がりや振動を抑制することができる。
In the guide block of the present invention, it is preferable that the first contact surface is a cylindrical surface and the second contact surface is a flat surface.
In this invention, for example, when joining a cylindrical joint to the inside of the end of a cylindrical body, the end face of the outer cylindrical body and the second abutment surface can be in close contact with each other on their flat surfaces, and the surface of the inner joint and the first abutment surface can be in close contact with each other on their cylindrical surfaces. As a result, the guide block is stably held on the end face of the outer cylindrical body and the surface of the inner joint, and can press down on the pair of workpieces to suppress lifting and vibration.
本発明のガイドブロックにおいて、前記第１当接面および前記第２当接面が、ともに円錐面であることが好ましい。
このような本発明では、例えば、外周縁に斜めに面取り加工された傾斜面を有する筒体の端部どうしを接合する場合、各々の傾斜面は、円錐面状の第１当接面および第２当接面と互いに密接することができる。これにより、ガイドブロックは、一対の筒体の傾斜面に安定的に保持され、一対の被接合部材を押さえて浮き上がりや振動を抑制することができる。
In the guide block of the present invention, it is preferable that the first contact surface and the second contact surface are both conical surfaces.
In the present invention, for example, when joining the ends of cylindrical bodies having inclined surfaces that are beveled at the outer periphery, each inclined surface can be in close contact with the first and second conical abutment surfaces, so that the guide block is stably held by the inclined surfaces of the pair of cylindrical bodies and can press the pair of joined members to prevent lifting or vibration.
本発明の摩擦攪拌接合方法は、少なくとも一方の表面が曲面である一対の被接合部材で形成される内隅部に対して摩擦攪拌接合を行う際に、攪拌ピンを回転自在に保持するガイド孔と、一対の前記被接合部材の一方に当接する第１当接面と、一対の前記被接合部材の他方に当接する第２当接面と、を有し、少なくとも前記第１当接面が、表面が曲面である一方の前記被接合部材の表面に密接可能な曲面であるガイドブロックを用いることを特徴とする。
このような本発明の摩擦攪拌接合方法によれば、前述した本発明のガイドブロックについて述べた通りの作用効果が得られる。
The friction stir welding method of the present invention is characterized in that, when friction stir welding an inner corner formed by a pair of workpieces, at least one of which has a curved surface, the method uses a guide block that has a guide hole for rotatably holding a stir pin, a first contact surface that contacts one of the pair of workpieces, and a second contact surface that contacts the other of the pair of workpieces, and in which at least the first contact surface is a curved surface that can come into close contact with the surface of one of the workpieces, which has a curved surface.
According to the friction stir welding method of the present invention, the same effects as those described above for the guide block of the present invention can be obtained.
本発明によれば、内隅部を形成する一対の被接合部材の表面が曲面でも一対の被接合部材を押さえて浮き上がりや振動を抑制できるガイドブロックおよび摩擦攪拌接合方法が提供される。 The present invention provides a guide block and friction stir welding method that can hold down a pair of workpieces, suppressing lifting and vibration, even when the surfaces of the workpieces forming the inner corner are curved.
以下、本発明の実施形態について図面を用いて説明する。
〔第１実施形態〕
図１から図４には、本発明の第１実施形態が示されている。
図１において、本実施形態では、工作機械１の主軸２に装着された内隅接合用回転ツール１０を用いて、ワーク３の内隅部４に対して摩擦攪拌接合を行う。
接合されるワーク３は、筒体５とその端部の内側に接合される筒状の継手６とで構成され、筒体５の端面７は平面であるが、継手６の表面８は円筒面である。
本実施形態では、表面８が円筒面である継手６が本発明における一方の被接合部材であり、端面７が平面である筒体５が本発明における他方の被接合部材に該当する。内隅部４は、端面７と表面８との間に形成される。端面７と表面８とのなす角は９０度である。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
First Embodiment
1 to 4 show a first embodiment of the present invention.
In FIG. 1, in this embodiment, friction stir welding is performed on an inner corner 4 of a workpiece 3 using a rotary tool 10 for inner corner welding attached to a spindle 2 of a machine tool 1 .
The workpiece 3 to be joined consists of a cylindrical body 5 and a cylindrical joint 6 joined to the inside of its end, and the end surface 7 of the cylindrical body 5 is flat, but the surface 8 of the joint 6 is cylindrical.
In this embodiment, the joint 6, whose surface 8 is a cylindrical surface, corresponds to one of the members to be joined in the present invention, and the cylindrical body 5, whose end surface 7 is a flat surface, corresponds to the other member to be joined in the present invention. The inner corner 4 is formed between the end surface 7 and the surface 8. The angle between the end surface 7 and the surface 8 is 90 degrees.
図２、図３、図４において、内隅接合用回転ツール１０は、摩擦攪拌接合用の攪拌ピン１１にガイドブロック２０を装着して構成される。
ガイドブロック２０は、金属材料の切削加工などで形成されたブロック状の部材であり、攪拌ピン１１を回転自在に保持するガイド孔２１と、継手６の表面８（被接合部材の一方）に当接する第１当接面２２と、筒体５の端面７（被接合部材の他方）に当接する第２当接面２３と、を有する。
2, 3 and 4, the inner corner welding rotary tool 10 is configured by attaching a guide block 20 to a stirring pin 11 for friction stir welding.
The guide block 20 is a block-shaped member formed by cutting a metal material or the like, and has a guide hole 21 that holds the stirring pin 11 rotatably, a first abutment surface 22 that abuts against the surface 8 of the joint 6 (one of the members to be joined), and a second abutment surface 23 that abuts against the end surface 7 of the cylindrical body 5 (the other member to be joined).
ガイド孔２１は、内側に図示しない軸受を有し、攪拌ピン１１を回転自在に保持可能である。ガイド孔２１の軸受にはスラスト軸受が含まれ、攪拌ピン１１は図中上方からガイド孔２１に挿入され、図２および図３の状態で進出を規制され、ガイドブロック２０から所定量だけ突出した状態で回転自在に維持される。 The guide hole 21 has a bearing (not shown) inside, which can rotatably hold the stirring pin 11. The bearing of the guide hole 21 includes a thrust bearing, and the stirring pin 11 is inserted into the guide hole 21 from above in the figure, and is restricted from advancing in the state shown in Figures 2 and 3, and is maintained rotatably while protruding a predetermined amount from the guide block 20.
第１当接面２２は、ガイドブロック２０の図中下側の長辺の一方を図中下側の面に対して４５度の傾斜で、かつ円筒面状に切り欠いて形成されている。第１当接面２２の円筒面は、継手６の表面８と密接可能な曲率とされている。
第２当接面２３は、ガイドブロック２０の図中下側の長辺の他方を図中下側の面に対して４５度の傾斜で平面状に切り欠いて形成されている。第２当接面２３は、第１当接面２２に対して９０度をなしており、第１当接面２２が継手６の表面８と密接した状態で、筒体５の端面７に密着可能である。
The first abutment surface 22 is formed by cutting out one of the long sides of the guide block 20 on the lower side in the figure at an angle of 45 degrees with respect to the lower surface in the figure, and into a cylindrical shape. The cylindrical surface of the first abutment surface 22 has a curvature that allows it to come into close contact with the surface 8 of the joint 6.
The second abutment surface 23 is formed by cutting out the other long side of the guide block 20 on the lower side in the figure at a 45-degree angle with respect to the lower surface in the figure. The second abutment surface 23 is at a 90-degree angle with respect to the first abutment surface 22, and can be in close contact with the end surface 7 of the cylindrical body 5 while the first abutment surface 22 is in close contact with the surface 8 of the joint 6.
継手６が円筒状であれば、その表面８の母線は継手６の中心軸と平行である。筒体５の端面７は、通常筒体５の中心軸線に直交する平面とされる。継手６の表面８と筒体５の端面７とのなす角度は通常９０度である。このため、第２当接面２３と第１当接面２２とのなす角度も９０度とされている。このような角度設定により、第１当接面２２が継手６の表面８と密接した状態で、筒体５の端面７に密着可能である。
ガイドブロック２０と第１当接面２２および第２当接面２３とのなす角度は、継手６の表面８および筒体５の端面７に対してなす角度が均等になるように、それぞれ４５度ずつの合計９０度とされている。これらは、例えば４０度と５０度の配分としてもよく、後述するガイド孔２１の中心軸線２１Ｃの角度、つまり継手６の表面８および筒体５の端面７に対する攪拌ピン１１の角度を考慮して変更することができる。
If the joint 6 is cylindrical, the generatrix of the surface 8 is parallel to the central axis of the joint 6. The end surface 7 of the cylindrical body 5 is usually a plane perpendicular to the central axis of the cylindrical body 5. The angle between the surface 8 of the joint 6 and the end surface 7 of the cylindrical body 5 is usually 90 degrees. Therefore, the angle between the second abutment surface 23 and the first abutment surface 22 is also 90 degrees. By setting this angle, the first abutment surface 22 can be in close contact with the end surface 7 of the cylindrical body 5 while in close contact with the surface 8 of the joint 6.
The angles formed by the guide block 20 and the first and second contact surfaces 22, 23 are 45 degrees each, totaling 90 degrees, so that the angles formed by the guide block 20 and the surface 8 of the joint 6 and the end surface 7 of the cylindrical body 5 are equal. These angles may be, for example, 40 degrees and 50 degrees, and can be changed taking into account the angle of the central axis 21C of the guide hole 21, which will be described later, i.e., the angle of the stirring pin 11 relative to the surface 8 of the joint 6 and the end surface 7 of the cylindrical body 5.
第２当接面２３と第１当接面２２とのなす角度は、継手６の表面８と筒体５の端面７とのなす角度が９０度でない場合、その角度に合わせて変更することができる。このような場合、ガイドブロック２０と第１当接面２２および第２当接面２３とのなす角度も、適宜変更することができる。例えば、継手６の表面８および筒体５の端面７に対してなす角度が８０度である場合、それぞれ４０度ずつの合計８０度としてもよい。 If the angle between the surface 8 of the joint 6 and the end face 7 of the cylindrical body 5 is not 90 degrees, the angle between the second abutment surface 23 and the first abutment surface 22 can be changed to match that angle. In such cases, the angles between the guide block 20 and the first abutment surface 22 and the second abutment surface 23 can also be changed as appropriate. For example, if the angle between the surface 8 of the joint 6 and the end face 7 of the cylindrical body 5 is 80 degrees, the angles may be 40 degrees each, for a total of 80 degrees.
図２および図４に示すように、第１当接面２２と第２当接面２３との交差部分は、円弧状の稜線２４となる。稜線２４の両端の尖端部分は、安全のため切り欠かれて平坦部２５とされている。
図３および図４に示すように、ガイド孔２１は中心軸線２１Ｃが稜線２４を貫通するように形成され、ガイド孔２１に保持された攪拌ピン１１が、筒体５の端面７と継手６の表面８とにほぼ半分ずつ没入するように配置されている。
ガイド孔２１の中心軸線２１Ｃは、第１当接面２２および第２当接面２３に対する角度がそれぞれ４５度となっている。
2 and 4, the intersection of the first contact surface 22 and the second contact surface 23 forms an arc-shaped ridgeline 24. The pointed ends of the ridgeline 24 are cut away to form flat portions 25 for safety reasons.
As shown in Figures 3 and 4, the guide hole 21 is formed so that the central axis 21C passes through the ridge line 24, and the stirring pin 11 held in the guide hole 21 is positioned so that it is approximately half-immersed in the end face 7 of the cylindrical body 5 and half-immersed in the surface 8 of the joint 6.
The central axis 21C of the guide hole 21 is angled at 45 degrees with respect to the first contact surface 22 and the second contact surface 23, respectively.
このような本実施形態では、次のような手順で摩擦攪拌接合を行う。
先ず、攪拌ピン１１をガイド孔２１に挿通して内隅接合用回転ツール１０とした状態で主軸２に装着し、工作機械１を作動させて攪拌ピン１１およびガイドブロック２０をワーク３の内隅部４、つまり筒体５の端面７と継手６の表面８とで挟まれた継ぎ目部分に近接させる。
次に、主軸２を回転させて攪拌ピン１１を回転させつつ、ガイドブロック２０の第１当接面２２および第２当接面２３をそれぞれ表面８および端面７に当接させ、ガイド孔２１に保持された攪拌ピン１１を表面８および端面７との継ぎ目部分に押し付けることで筒体５と継手６との摩擦攪拌接合が開始される。
続いて、攪拌ピン１１で筒体５と継手６とを摩擦攪拌しつつ、攪拌ピン１１を表面８および端面７との継ぎ目に沿って移動させることで、表面８および端面７との継ぎ目は順次摩擦攪拌接合されてゆく。
In this embodiment, friction stir welding is performed in the following procedure.
First, the stirring pin 11 is inserted into the guide hole 21 to form the rotary tool 10 for joining inner corners, which is then attached to the spindle 2. The machine tool 1 is then operated to bring the stirring pin 11 and guide block 20 close to the inner corner 4 of the workpiece 3, i.e., the joint portion sandwiched between the end face 7 of the cylindrical body 5 and the surface 8 of the joint 6.
Next, while rotating the main shaft 2 to rotate the stirring pin 11, the first abutment surface 22 and the second abutment surface 23 of the guide block 20 are abutted against the surface 8 and the end face 7, respectively, and the stirring pin 11 held in the guide hole 21 is pressed against the joint portion between the surface 8 and the end face 7, thereby starting friction stir welding of the cylindrical body 5 and the joint 6.
Next, while friction stirring the cylindrical body 5 and the joint 6 with the stirring pin 11, the stirring pin 11 is moved along the joint between the surface 8 and the end face 7, whereby the joint between the surface 8 and the end face 7 is sequentially friction stir welded.
このような本実施形態によれば、以下のような効果が得られる。
本実施形態においては、ガイドブロック２０の第１当接面２２および第２当接面２３がそれぞれ表面８および端面７に密接された状態で移動することで、ガイド孔２１に保持された攪拌ピン１１は表面８および端面７との継ぎ目に対して常に一定の深さおよび角度に維持され、さらに被接合部材（継手６の表面８および筒体５の端面７）を押さえて浮き上がりや振動を抑制し、安定した摩擦攪拌接合が行われる。
つまり、本実施形態では、一対の被接合部材（継手６）の一方の表面（表面８）が曲面（円筒面）であっても、この曲面に対して第１当接面２２が密接して面接触することで、ガイドブロック２０で被接合部材（継手６の表面８および筒体５の端面７）を押さえて安定させることができる。
According to this embodiment, the following effects can be obtained.
In this embodiment, the first abutment surface 22 and the second abutment surface 23 of the guide block 20 move while being in close contact with the surface 8 and the end face 7, respectively, so that the stirring pin 11 held in the guide hole 21 is always maintained at a constant depth and angle relative to the joint with the surface 8 and the end face 7, and further presses down on the members to be joined (the surface 8 of the joint 6 and the end face 7 of the cylindrical body 5), suppressing lifting and vibration, thereby performing stable friction stir welding.
In other words, in this embodiment, even if one surface (surface 8) of a pair of joined members (joint 6) is a curved surface (cylindrical surface), the first abutment surface 22 is in close surface contact with this curved surface, so that the guide block 20 can press and stabilize the joined members (surface 8 of joint 6 and end surface 7 of cylindrical body 5).
本実施形態では、第１当接面２２と第２当接面２３とは互いに９０度（４５度＋４５度）で交差しており、ガイド孔２１は第１当接面２２と第２当接面２３との交差部分の稜線２４を貫通している。
このため、ガイド孔２１に挿通された攪拌ピン１１を、第１当接面２２と第２当接面２３との交差部分の稜線２４つまり一対の被接合部材（筒体５の端面７および継手６の表面８）の交差部分に向けて保持することができ、ガイド孔２１に保持された攪拌ピン１１が、筒体５の端面７と継手６の表面８とにほぼ半分ずつ没入する状態、つまり摩擦攪拌接合に適切な状態で攪拌ピン１１をガイドすることができる。
In this embodiment, the first abutment surface 22 and the second abutment surface 23 intersect with each other at 90 degrees (45 degrees + 45 degrees), and the guide hole 21 penetrates the ridge line 24 at the intersection between the first abutment surface 22 and the second abutment surface 23.
Therefore, the stirring pin 11 inserted into the guide hole 21 can be held toward the ridge 24 of the intersection between the first abutment surface 22 and the second abutment surface 23, that is, the intersection of a pair of workpieces (the end face 7 of the cylindrical body 5 and the surface 8 of the joint 6), and the stirring pin 11 held in the guide hole 21 can be guided so that it is approximately half-immersed in the end face 7 of the cylindrical body 5 and the surface 8 of the joint 6, that is, in a state suitable for friction stir welding.
〔第２実施形態〕
図５から図８には、本発明の第２実施形態が示されている。
前述した第１実施形態では、摩擦攪拌接合する一対の被接合部材がワーク３の筒体５および継手６であり、筒体５の端面７が平面であり、継手６の表面８が円筒面であった。このため、内隅接合用回転ツール１０は、内隅部４において平面である端面７および円筒面である表面８にそれぞれ密接できるように、第１当接面２２を円筒面とし、第２当接面２３を平面で構成していた。
Second Embodiment
5 to 8 show a second embodiment of the present invention.
In the first embodiment described above, the pair of workpieces to be friction stir welded are the cylindrical body 5 and the joint 6 of the workpiece 3, the end face 7 of the cylindrical body 5 is a flat surface, and the surface 8 of the joint 6 is a cylindrical surface. For this reason, the rotating tool 10 for inner corner welding has the first abutment surface 22 as a cylindrical surface and the second abutment surface 23 as a flat surface so that the inner corner 4 can come into close contact with the end face 7, which is a flat surface, and the surface 8, which is a cylindrical surface.
これに対し、第２実施形態では、図５に示すように、接合されるワーク３Ａが同径の筒体５Ａ，６Ａであり、各々の端縁は斜め４５度で面取り加工されて円錐面状の傾斜面７Ａ，８Ａとされ、これらの傾斜面７Ａ，８Ａにより内隅部４Ａが形成されている。そして、内隅接合用回転ツール１０Ａにおいては、摩擦攪拌接合用の攪拌ピン１１に、一対の傾斜面７Ａ，８Ａに対応したガイドブロック３０が装着されている。 In contrast, in the second embodiment, as shown in Figure 5, the workpieces 3A to be joined are cylindrical bodies 5A and 6A of the same diameter, and each edge is chamfered at a 45-degree angle to form conical inclined surfaces 7A and 8A, which form the inner corner 4A. In the inner corner joining rotary tool 10A, a guide block 30 corresponding to the pair of inclined surfaces 7A and 8A is attached to the stirring pin 11 for friction stir welding.
ガイドブロック３０は、図６、図７、図８に示すように、金属材料の切削加工などで形成されたブロック状の部材であり、攪拌ピン１１を回転自在に保持するガイド孔３１と、筒体６Ａの傾斜面８Ａ（被接合部材の一方）に当接する第１当接面３２と、筒体５Ａの傾斜面７Ａ（被接合部材の他方）に当接する第２当接面３３と、を有する。 As shown in Figures 6, 7, and 8, the guide block 30 is a block-shaped member formed by cutting metal material or other methods, and has a guide hole 31 that rotatably holds the stirring pin 11, a first contact surface 32 that contacts the inclined surface 8A of the cylindrical body 6A (one of the workpieces), and a second contact surface 33 that contacts the inclined surface 7A of the cylindrical body 5A (the other workpiece).
ガイド孔３１は、前述した第１実施形態のガイド孔２１と同様であるので重複する説明は省略する。 The guide hole 31 is similar to the guide hole 21 in the first embodiment described above, so a duplicated description will be omitted.
第１当接面３２は、ガイドブロック３０の図中下側の長辺の一方を図中下側の面に対して４５度の傾斜で、かつ円錐面状に切り欠いて形成されている。第１当接面３２の円錐面は、筒体６Ａの傾斜面８Ａと密接可能な曲率とされている。
第２当接面３３は、ガイドブロック３０の図中下側の長辺の他方を図中下側の面に対して４５度の傾斜で、かつ円錐面状に切り欠いて形成されている。第２当接面３３の円錐面は、筒体５Ａの傾斜面７Ａと密接可能な曲率とされている。
The first abutment surface 32 is formed by cutting out one of the long sides of the guide block 30 on the lower side in the figure at an angle of 45 degrees with respect to the lower surface in the figure, and into a conical shape. The conical surface of the first abutment surface 32 has a curvature that allows it to come into close contact with the inclined surface 8A of the cylindrical body 6A.
The second abutment surface 33 is formed by cutting out a conical surface at a 45-degree angle from the lower surface of the guide block 30. The conical surface of the second abutment surface 33 has a curvature that allows it to come into close contact with the inclined surface 7A of the cylindrical body 5A.
筒体５Ａの傾斜面７Ａと筒体６Ａの傾斜面８Ａとが同じ曲面とすることとができ、この場合、第１当接面３２および第２当接面３３は面対称となる。
図６に示すように、第１当接面３２と第２当接面３３との交差部分は、円弧状の稜線３４となる。ただし、第１当接面３２および第２当接面３３は面対称であり、図８においては稜線３４が直線に表れる。稜線３４の両端の尖端部分は、安全のため切り欠かれて平坦部３５とされている。
The inclined surface 7A of the cylindrical body 5A and the inclined surface 8A of the cylindrical body 6A can be the same curved surface, in which case the first contact surface 32 and the second contact surface 33 are plane symmetrical.
As shown in Fig. 6, the intersection of the first abutment surface 32 and the second abutment surface 33 forms an arc-shaped ridgeline 34. However, the first abutment surface 32 and the second abutment surface 33 are plane symmetrical, and the ridgeline 34 appears as a straight line in Fig. 8. The pointed ends of the ridgeline 34 are cut away to form flat portions 35 for safety reasons.
図７および図８に示すように、ガイド孔３１は中心軸線３１Ｃが稜線３４を貫通するように形成され、ガイド孔３１に保持された攪拌ピン１１が、筒体５Ａ，６Ａの傾斜面７Ａ，８Ａにほぼ半分ずつ没入するように配置されている。
ガイド孔３１の中心軸線３１Ｃは、第１当接面３２および第２当接面３３に対する角度がそれぞれ４５度となっている。
As shown in Figures 7 and 8, the guide hole 31 is formed so that the central axis 31C passes through the ridge line 34, and the stirring pin 11 held in the guide hole 31 is positioned so that it is approximately half-immersed in the inclined surfaces 7A and 8A of the cylindrical bodies 5A and 6A.
The central axis 31C of the guide hole 31 is angled at 45 degrees with respect to the first contact surface 32 and the second contact surface 33, respectively.
このような本実施形態では、第１実施形態と同様な手順で摩擦攪拌接合を行う。
すなわち、攪拌ピン１１をガイド孔３１に挿通して内隅接合用回転ツール１０Ａとした状態で主軸２に装着し、工作機械１を作動させて攪拌ピン１１およびガイドブロック３０をワーク３Ａの内隅部４Ａ、つまり筒体５Ａの傾斜面７Ａと筒体６Ａの傾斜面８Ａとで挟まれた継ぎ目部分に近接させる。
そして、主軸２を回転させて攪拌ピン１１を回転させつつ、ガイドブロック３０の第１当接面３２および第２当接面３３をそれぞれ傾斜面７Ａ，８Ａに当接させ、ガイド孔３１に保持された攪拌ピン１１を傾斜面７Ａ，８Ａの継ぎ目部分に押し付け、攪拌ピン１１で摩擦攪拌しつつ攪拌ピン１１を傾斜面７Ａ，８Ａの継ぎ目に沿って移動させることで、傾斜面７Ａ，８Ａの継ぎ目は順次摩擦攪拌接合されてゆく。
In this embodiment, friction stir welding is performed in the same procedure as in the first embodiment.
That is, the stirring pin 11 is inserted into the guide hole 31 to form the rotary tool 10A for joining inner corners, which is then attached to the spindle 2, and the machine tool 1 is operated to bring the stirring pin 11 and guide block 30 close to the inner corner portion 4A of the workpiece 3A, i.e., the joint portion sandwiched between the inclined surface 7A of the cylindrical body 5A and the inclined surface 8A of the cylindrical body 6A.
Then, while rotating the main shaft 2 to rotate the stirring pin 11, the first abutment surface 32 and the second abutment surface 33 of the guide block 30 are abutted against the inclined surfaces 7A and 8A, respectively, and the stirring pin 11 held in the guide hole 31 is pressed against the joint portion of the inclined surfaces 7A and 8A, and while friction stirring is performed with the stirring pin 11, the stirring pin 11 is moved along the joint of the inclined surfaces 7A and 8A, and the joint of the inclined surfaces 7A and 8A is sequentially friction stir welded.
このような本実施形態によれば、以下のような効果が得られる。
本実施形態においては、ガイドブロック３０の第１当接面３２および第２当接面３３がそれぞれ傾斜面７Ａ，８Ａに密接された状態で移動することで、ガイド孔３１に保持された攪拌ピン１１は傾斜面７Ａ，８Ａの継ぎ目に対して常に一定の深さおよび角度に維持され、安定した摩擦攪拌接合が行われる。
つまり、本実施形態では、一対の被接合部材（筒体５Ａ，６Ａ）の表面（傾斜面７Ａ，８Ａ）がともに曲面（円錐面）であっても、これらの曲面に対して第１当接面３２および第２当接面３３が密接して面接触することで、ガイドブロック３０で被接合部材（筒体５Ａ，６Ａ）の表面（傾斜面７Ａ，８Ａ）を押さえて安定させることができる。
According to this embodiment, the following effects can be obtained.
In this embodiment, the first abutment surface 32 and the second abutment surface 33 of the guide block 30 move while being in close contact with the inclined surfaces 7A and 8A, respectively, so that the stirring pin 11 held in the guide hole 31 is always maintained at a constant depth and angle relative to the joint of the inclined surfaces 7A and 8A, thereby performing stable friction stir welding.
In other words, in this embodiment, even if the surfaces (inclined surfaces 7A, 8A) of a pair of workpieces (cylindrical bodies 5A, 6A) are both curved (conical) surfaces, the first abutment surface 32 and the second abutment surface 33 are in close surface contact with these curved surfaces, so that the guide block 30 can press and stabilize the surfaces (inclined surfaces 7A, 8A) of the workpieces (cylindrical bodies 5A, 6A).
本実施形態においても、第１実施形態と同様に、ガイド孔３１は第１当接面３２と第２当接面３３との交差部分の稜線３４を貫通しており、ガイド孔３１に挿通された攪拌ピン１１が一対の被接合部材（筒体５Ａ，６Ａの傾斜面７Ａ，８Ａ）にほぼ半分ずつ没入する状態、つまり摩擦攪拌接合に適切な状態で攪拌ピン１１をガイドすることができる。 In this embodiment, as in the first embodiment, the guide hole 31 penetrates the ridge 34 at the intersection of the first abutment surface 32 and the second abutment surface 33, and the stirring pin 11 inserted through the guide hole 31 can be guided so that it is approximately half-immersed in each of the pair of workpieces (the inclined surfaces 7A and 8A of the cylindrical bodies 5A and 6A), i.e., in a state appropriate for friction stir welding.
〔他の実施形態〕
なお、本発明は前述した実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形などは本発明に含まれる。
前記実施形態では、第１当接面２２，３２および第２当接面２３，３３が、それぞれ連続した曲面（円筒面あるいは円錐面）あるいは平面とされていたが、第１当接面２２，３２および第２当接面２３，３３の表面は連続面に限らない。
例えば、第１当接面２２，３２または第２当接面２３，３３に多数の凹凸が形成され、各凸部の先端が同じ仮想的な円筒面、円錐面に沿った曲面または平面となっていてもよく、各凸部の先端面が被接合部材の表面に同時に密接することで、ガイドブロック２０，３０で被接合部材の表面を押さえて安定させることができればよい。
Other Embodiments
The present invention is not limited to the above-described embodiment, and includes modifications within the scope of achieving the object of the present invention.
In the above embodiment, the first abutment surfaces 22, 32 and the second abutment surfaces 23, 33 are each continuous curved surfaces (cylindrical or conical surfaces) or flat surfaces, but the surfaces of the first abutment surfaces 22, 32 and the second abutment surfaces 23, 33 are not limited to continuous surfaces.
For example, a large number of protrusions and recesses may be formed on the first contact surface 22, 32 or the second contact surface 23, 33, and the tip of each protrusion may be a curved or flat surface along the same imaginary cylindrical or conical surface, so that the tip surface of each protrusion can be brought into close contact with the surface of the workpiece to be joined at the same time, allowing the guide blocks 20, 30 to press and stabilize the surface of the workpiece to be joined.
前記各実施形態において、ガイドブロック２０，３０には、内部に摩擦攪拌接合に伴う熱を発散させるための冷媒通路が設けられていてもよい。
前記各実施形態において、ガイドブロック２０，３０のガイド孔２１，３１には、攪拌ピン１１に接する軸受または支持部材などが、着脱自在な分割構造とされ、適宜交換可能とされていてもよい。
In each of the above-described embodiments, the guide blocks 20 and 30 may be provided with a coolant passage therein for dissipating heat generated by friction stir welding.
In each of the above-described embodiments, the guide holes 21, 31 of the guide blocks 20, 30 may have a detachable divided structure for the bearings or support members that come into contact with the stirring pin 11, and may be replaceable as appropriate.
本発明は内隅部摩擦攪拌接合用のガイドブロックおよび摩擦攪拌接合方法として利用できる。 The present invention can be used as a guide block for friction stir welding of inner corners and as a friction stir welding method.
１…工作機械、２…主軸、３，３Ａ…ワーク、４，４Ａ…内隅部、５，５Ａ…一対の被接合部材の他方である筒体、６…一対の被接合部材の一方である継手、６Ａ…一対の被接合部材の一方である筒体、７…一対の被接合部材の他方の表面である端面、７Ａ…一対の被接合部材の他方の傾斜面、８…一対の被接合部材の一方の表面、８Ａ…一対の被接合部材の一方の表面である傾斜面、１０，１０Ａ…内隅接合用回転ツール、１１…攪拌ピン、２０，３０…ガイドブロック、２１，３１…ガイド孔、２１Ｃ，３１Ｃ…中心軸線、２２…第１当接面（円筒面）、２３…第２当接面（平面）、２４，３４…稜線、２５，３５…平坦部、３２…第１当接面（円錐面）、３３…第２当接面（円錐面）。 1...machine tool, 2...spindle, 3, 3A...workpiece, 4, 4A...inner corner, 5, 5A...cylindrical body which is the other of a pair of welded members, 6...joint which is one of the pair of welded members, 6A...cylindrical body which is one of the pair of welded members, 7...end face which is the surface of the other of the pair of welded members, 7A...inclined surface of the other of the pair of welded members, 8...surface of one of the pair of welded members, 8A...inclined surface which is the surface of one of the pair of welded members, 10, 10A...rotary tool for joining inner corners, 11...stirring pin, 20, 30...guide block, 21, 31...guide hole, 21C, 31C...center axis, 22...first contact surface (cylindrical surface), 23...second contact surface (flat surface), 24, 34...ridge line, 25, 35...flat portion, 32...first contact surface (conical surface), 33...second contact surface (conical surface).
Claims (5)
前記攪拌ピンを回転自在に保持するガイド孔と、一対の前記被接合部材の一方に当接する第１当接面と、一対の前記被接合部材の他方に当接する第２当接面と、前記第１当接面と前記第２当接面との交差部分の稜線の両端に形成された平坦部と、を有し、
少なくとも前記第１当接面が、表面が曲面である一方の前記被接合部材の表面に密接可能な曲面であることを特徴とするガイドブロック。 A guide block that guides a stirring pin that performs friction stir welding on an inner corner formed by a pair of workpieces, at least one of whose surfaces is a curved surface,
a guide hole that rotatably holds the stirring pin, a first contact surface that contacts one of the pair of workpieces, a second contact surface that contacts the other of the pair of workpieces , and flat portions formed on both ends of a ridge line at an intersection between the first contact surface and the second contact surface ,
A guide block, wherein at least the first contact surface is a curved surface that can come into close contact with the surface of one of the workpieces, the surface of which is a curved surface.
前記第１当接面と前記第２当接面とは互いに所定の交差角度で交差しており、
前記ガイド孔は前記第１当接面と前記第２当接面との交差部分を貫通していることを特徴とするガイドブロック。 2. The guide block according to claim 1,
the first contact surface and the second contact surface intersect with each other at a predetermined intersecting angle,
The guide block is characterized in that the guide hole penetrates an intersection portion between the first contact surface and the second contact surface.
前記第１当接面は円筒面であり、前記第２当接面は平面であることを特徴とするガイドブロック。 The guide block according to claim 1 or 2,
The guide block according to claim 1, wherein the first contact surface is a cylindrical surface and the second contact surface is a flat surface.
前記第１当接面および前記第２当接面が、ともに円錐面であることを特徴とするガイドブロック。 The guide block according to claim 1 or 2,
A guide block, wherein the first contact surface and the second contact surface are both conical surfaces.
攪拌ピンを回転自在に保持するガイド孔と、一対の前記被接合部材の一方に当接する第１当接面と、一対の前記被接合部材の他方に当接する第２当接面と、前記第１当接面と前記第２当接面との交差部分の稜線の両端に形成された平坦部と、を有し、少なくとも前記第１当接面が、表面が曲面である一方の前記被接合部材の表面に密接可能な曲面であるガイドブロックを用いることを特徴とする摩擦攪拌接合方法。 When performing friction stir welding on an inner corner formed by a pair of workpieces, at least one of whose surfaces is a curved surface,
A friction stir welding method using a guide block having a guide hole that rotatably holds a stirring pin, a first contact surface that contacts one of a pair of workpieces, a second contact surface that contacts the other of the pair of workpieces, and flat portions formed on both ends of a ridge line at an intersection between the first contact surface and the second contact surface , wherein at least the first contact surface is a curved surface that can come into close contact with the surface of one of the workpieces, the surface of which is a curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021146131A JP7721373B2 (en) | 2021-09-08 | 2021-09-08 | Guide block and friction stir welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021146131A JP7721373B2 (en) | 2021-09-08 | 2021-09-08 | Guide block and friction stir welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2023039127A JP2023039127A (en) | 2023-03-20 |
| JP7721373B2 true JP7721373B2 (en) | 2025-08-12 |
Family
ID=85600391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2021146131A Active JP7721373B2 (en) | 2021-09-08 | 2021-09-08 | Guide block and friction stir welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7721373B2 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005060178A1 (en) | 2005-12-14 | 2007-06-21 | Eads Deutschland Gmbh | Friction stir tool with conformable shoulder |
| JP4240579B2 (en) | 1998-05-22 | 2009-03-18 | 日本軽金属株式会社 | Inner corner friction stir welding probe and inner corner friction stir welding method using the same |
| JP2009142845A (en) | 2007-12-13 | 2009-07-02 | Hitachi Ltd | Friction stirrer and friction stir process |
| JP2015223607A (en) | 2014-05-28 | 2015-12-14 | 日本軽金属株式会社 | Friction stir welding method |
| US20180021881A1 (en) | 2015-02-06 | 2018-01-25 | Grenzebach Maschinenbau Gmbh | Apparatus and method for mobile friction stir welding of two tubular structures |
| WO2022099125A1 (en) | 2020-11-06 | 2022-05-12 | Dmc Global Inc. | Method and apparatus for additive friction stir manufactured transition joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8857696B1 (en) * | 2014-04-01 | 2014-10-14 | King Fahd University Of Petroleum And Minerals | Method and tool for friction stir welding |
-
2021
- 2021-09-08 JP JP2021146131A patent/JP7721373B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4240579B2 (en) | 1998-05-22 | 2009-03-18 | 日本軽金属株式会社 | Inner corner friction stir welding probe and inner corner friction stir welding method using the same |
| DE102005060178A1 (en) | 2005-12-14 | 2007-06-21 | Eads Deutschland Gmbh | Friction stir tool with conformable shoulder |
| JP2009142845A (en) | 2007-12-13 | 2009-07-02 | Hitachi Ltd | Friction stirrer and friction stir process |
| JP2015223607A (en) | 2014-05-28 | 2015-12-14 | 日本軽金属株式会社 | Friction stir welding method |
| US20180021881A1 (en) | 2015-02-06 | 2018-01-25 | Grenzebach Maschinenbau Gmbh | Apparatus and method for mobile friction stir welding of two tubular structures |
| WO2022099125A1 (en) | 2020-11-06 | 2022-05-12 | Dmc Global Inc. | Method and apparatus for additive friction stir manufactured transition joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2023039127A (en) | 2023-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9566661B2 (en) | Friction stir welding method | |
| EP1361014A2 (en) | Tapered friction stir welding tool | |
| JPH08243826A (en) | Bi-directional spot facing tool | |
| JP2009539621A5 (en) | ||
| JP2000246465A (en) | Tools for friction stir welding | |
| US20180207745A1 (en) | Joining method and method for manufacturing heat sink | |
| JP2000334578A (en) | Tools for friction stir welding | |
| JP2000301364A (en) | Rotation friction agitation joining method of dissimiliar metal material | |
| JP2003311437A (en) | Friction welding equipment | |
| JP7721373B2 (en) | Guide block and friction stir welding method | |
| JP5915802B2 (en) | Friction stir welding method | |
| JP3452044B2 (en) | Friction stir tool, joining method using the same, and method for removing fine voids on casting surface | |
| JP2015120204A (en) | Friction stir welding method | |
| JP2000334576A (en) | Joining apparatus and joining method including pretreatment | |
| JP7789514B2 (en) | Guide block and friction stir welding method | |
| JP7727453B2 (en) | Guide block and friction stir welding method | |
| JP4426407B2 (en) | Cutting device | |
| JP6756215B2 (en) | Joining method | |
| JP2009279595A (en) | Joining method | |
| JP2002126881A (en) | Friction joining method | |
| JP6756253B2 (en) | Joining method | |
| JP6704768B2 (en) | Friction stir welding method | |
| JP6164337B2 (en) | Friction stir welding method | |
| JP6794945B2 (en) | Joining method | |
| JP6699530B2 (en) | Joining method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20240704 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20250122 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20250128 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20250321 |
|
| 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: 20250701 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20250730 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 7721373 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |