JP2005271084A - Apparatus for producing joined structural body with friction-stirring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for performing excellent friction stirring and joining by solving various kinds of problems by a deviating force in the longitudinal direction caused by the rotation of a bobbin tool or by a force in the direction separating from a joining line in the right-to-left direction of a joining position. <P>SOLUTION: In a bobbin tool in which a rotary tool holds both sides of a base material by a pair of upper and lower shoulders located on face and back sides of a member joining line in a rotating manner and stirs a softened area, a passing-through space of the back side shoulder is formed at connection tools including a plurality of supporting tools at which a joining line restriction means restrictively supports the back side of members adjacent to each other across the joining line and the connection tool to integrally connect the supporting tools to each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is, for example, a railway vehicle structure, a ship structure, a building structure by friction stir welding a plurality of members, such as a plate or mold extending in the longitudinal direction, a dome and a cylindrical body, an end plate and a cylindrical body, and a cylindrical body, The present invention relates to an apparatus for manufacturing a joined structure by friction stirrer, which is used for manufacturing large structures such as aircraft and rocket structures and pressure vessels.

  In general, two-sided structures (panels), such as long hollow molds that extend in the longitudinal direction, are used in large-scale structures of railway vehicles and ships. When joining such extruded molds, or when joining the head or rocket of an aircraft with a dome and a cylinder or between cylinders, further join the end plate and cylinder of the pressure vessel. At that time, for example, the butt joint is formed by fusion welding using MIG welding or the like. However, the method of joining by fusion welding causes problems such as thermal distortion.

  On the other hand, JP 7-505090 A (Patent Document 1) describes joining of members by friction stir welding, and a rotary tool made of a material substantially harder than a workpiece is used as a joining portion of the workpiece. A joining method is disclosed in which a workpiece is joined by plastic flow caused by frictional heat generated between the rotating tool and the workpiece by being inserted into the rotating tool and moved while rotating the rotating tool.

Next, a rotary tool used for friction stir welding will be described. As disclosed in Patent Document 1, friction stir welding includes probe type and bobbin tool type rotary tools. The probe-type tool includes a shoulder portion and a probe provided in the shoulder portion, and the shoulder portion has a circular shoulder surface. Then, the rotary tool is rotated from the upper surface of the joining line in a state where a plurality of mold materials are abutted or fitted, and the probe is inserted into the hole provided in the joining line of the workpiece, and the workpiece is joined. Frictional heat is applied to the work piece by the circular shoulder surface rotating in sliding contact with the wire, and the periphery of the probe is plastically fluidized. By moving the rotating tool along the joint line in this state, the periphery of the joint line is plastic. While fluidizing, the two materials are agitated and kneaded while receiving pressure along the joining line, and move to the rear side of the probe. As a result, the plastic flowed material loses frictional heat on the rear side and rapidly cools and solidifies, so that both panel plates are joined together with the materials mixed together.
Further, by providing the probe with a reverse screw with respect to the rotation direction, a downward plastic flow can be achieved, and the occurrence of defects such as nests and poor fusion on the back side can be prevented.

  However, in such a joining method, in order to generate frictional heat at the time of joining, it is necessary to press the rotary tool against the joining line side, and therefore a backing metal is used to cope with this reaction force. This backing metal is installed in close contact with the back surface of the face plate of the workpiece, and requires a large pressing force.

In order to eliminate such drawbacks, a rotating tool called a bobbin tool has been proposed.
Such a tool is provided with a pair of shoulders spaced apart so as to sandwich both front and back surfaces of the metal plates to be joined, and a probe is provided between the pair of upper and lower shoulders. The frictional heat can be generated, and not only the backside fusion failure does not occur, but also the backing metal is not necessary because the pair of upper and lower shoulders are subjected to mutual reaction force.

However, the friction stir welding of the rotary tool having such a configuration also has the following problems.
That is, when performing a plurality of friction stir welding on the hollow mold material that is a member, first, the mold material that is a member is abutted along its long side (longitudinal joining line). Then, along this abutting part, it is rotated by holding the both surfaces of the base material with both shoulders of the rotating tool (bobbin tool) to cause frictional heat input from both the front and back surfaces, and is softened by a probe between a pair of upper and lower shoulders. In order to repeat the sliding contact with the phase angle of 360 ° on both the front and back surfaces of the base material while rotating the shoulder concentrically with the center of the probe, the adjacent members move along the joining line. The force is applied to the members in the front-rear direction and the direction away from the joining line.
Since this force is applied to the rotary tool at the joining position and the rotary tool moves along the joining line, before and after the joining of the mold material and the joined structure obtained by friction stir welding of the mold material. Front / rear distortion is caused by the force in the direction, or a gap is generated on the joining line due to the force in the direction away from the joining line in the left / right direction of the joining position. Due to the existence of this gap, good friction stir welding is performed between the mold materials. Can be extremely difficult.

  For this reason, in the probe type rotary tool having only the front side shoulder, the member is fixed to the surface plate and a plurality of members are friction stir welded. However, this is the case with the bobbin tool having the tool on the back side of the member. Is impossible.

Therefore, in Japanese Patent Application Laid-Open No. 10-52773 (Patent Document 2), a fixing jig provided with a rotating mechanism from both the rotating tool arrangement side (welding surface side) or the rotating tool opposite side (welding surface back side) ( A workpiece fixing jig that is fixed by a roller) and further provided with the rotating mechanism has been proposed as a method of manufacturing a railway vehicle structure that is arranged both in front of and behind the rotating tool.
However, in such a technique, it is necessary to arrange a fixing jig having at least nine rotation mechanisms in total on the left and right of the rotary tool arrangement side, the left and right of the opposite side (the back side of the welding surface), and the front position of the joining line. In addition, it is extremely difficult to restrain and support them with equal pressure while moving them in synchronization with the rotary tool, and the movement follow-up mechanism is also increased in size.

Furthermore, as shown in Japanese Patent Laid-Open No. 2002-45981 (Patent Document 3), as a technique for enabling bonding without a tool support even when the inside is hollow, and further capable of bonding a bonding material having a curved surface, the bobbin A technique is also proposed in which rotating rolls sandwiching the bonding material from both sides are arranged in front and rear of the tool, and the unevenness and vertical deformation of the bonding material surface in the bonding process are corrected before bonding by the roll. .
JP 7-505090 Gazette JP-A-10-52773 JP 2002-45981 A

  However, since these technologies are all supported by rolls, it is difficult to completely restrain the front and rear restraints when the force in the front-rear direction generated during joining occurs and the roll rotates. It is difficult to completely restrain the force supported by the bearing against the force in the direction away from the joint line in the left-right direction.

  The object of the present invention is to solve the various problems caused by the displacement force in the front-rear direction caused by the rotation of the bobbin tool or the force in the direction away from the joining line in the left-right direction of the joining position and to perform good friction stir welding. It is to provide a manufacturing apparatus.

In the present invention, a joining line restraining means for restraining a state in which a plurality of members are abutted along a straight or curved member joining line, and friction stir welding of the plurality of members from both the front and back sides of the joining line. Furthermore, the present invention is applied to an apparatus for manufacturing a planar or curved joint structure comprising a rotary tool having shoulders on both front and back sides.
That is, the present invention is an apparatus for manufacturing a joint structure while restraining plates or molds extending in the longitudinal direction with a restraining means and moving a joint line with a bobbin tool, such as a railway vehicle structure, a ship structure, and a building structure, A device that manufactures a joint structure while restraining a dome and a cylindrical body or cylinders with restraining means, such as an aircraft and a rocket, and moving a circumferential joint line with a bobbin tool, and further, an end plate like a pressure vessel A device that manufactures a joined structure while restraining cylindrical bodies with restraining means and moving a circumferential joining line with a bobbin tool, and further restraining wavy members between planes or curved surfaces with restraining means. The present invention is applied to an apparatus for manufacturing a joined structure while moving a joining line with a bobbin tool.

According to the first aspect of the present invention, there is provided a joining line restraining means for restraining a state in which a plurality of members are abutted along a straight or curved member joining line, and the plurality of members are friction stir welded from the front and back both sides of the joining line. In order to do this, in the manufacturing apparatus of a planar or curved joint structure comprising a rotary tool having a shoulder on each of the front and back sides,
Between the pair of upper and lower shoulders while the rotary tool rotates while holding the both surfaces of the base material with a pair of upper and lower shoulders located on both the front and back sides of the member joining line and causing frictional heat input from both the front and back sides of the member joining line In order to solve the bonding failure caused by the displacement force in the front-rear direction due to the rotation of the bobbin tool at the joining position and the force in the direction away from the joining line in the left-right direction, The joining line restraining means includes a plurality of supporting parts that restrain and support the back surfaces of the adjacent members across the joining line, and a connecting part that integrally connects the supporting parts, and the connecting part includes a back side shoulder. A passing space is formed, and preferably, the supporting portion is a fixing portion that is screwed, welded, adhered, fitted, adsorbed, or magnetically attached to the back surface of the joining member. Restraining jig having a portion (hereinafter referred to as constraining jig), characterized in that it is a plurality disposed at predetermined intervals along the welding line.

According to this invention, if U-shaped, V-shaped, and gate-shaped restraining jigs each having an open end as a fixed portion are arranged so as to straddle adjacent members along the joining line, unlike the restraining means by the roller. In the direction perpendicular to the joining line, the left and right are restrained by the connecting part, and in the front and rear direction, the strength structure between the restraining jigs of the previous stage and the current stage or the current stage and the next stage through a predetermined interval (the fixing position is the front and rear sides) (Multiple points) also restrains the displacement in the front-rear direction.
Moreover, although the restraining jig is fixedly arranged at predetermined intervals along the joining line, there is no problem even in joining because the passage space for the back side shoulder is formed at the connecting portion.

In addition, when the joining member is a magnetic body, it is easy to remove the constraining jig after joining if a fixing portion of either vacuum or electromagnet suction is used as the supporting portion.
In addition, when the joining member is a non-magnetic material, a fixing portion by any one of screwing, welding, adhesion, fitting, and adsorption may be used. Even if it is configured to be attached and welded, it is on the inner surface side, so there is no need for post-processing, and particularly in the case of screwing or fitting, the internal construction member is attached using a screw hole or fitting recess be able to.
When the fixing part is an adhesive part, the bonding position of each member is a position separated from the bonding line so that it is below the durable temperature of the adhesive due to a temperature drop due to heat propagation of frictional heat input of the rotary tool. If set to, problems such as thermal degradation due to friction stir welding can be solved.
In this case, by setting the durability temperature of the adhesive to be equal to or lower than the softening temperature of the joining member, even when heat is applied to the adhesive surface after joining and the adhesive is peeled off, the joining portion does not deteriorate in strength. .
For example, in the case of an aluminum alloy, the softening point of friction stir welding is 400 to 600 ° C., whereas in the case of a resin adhesive, the heat durability temperature is around 250 ° C., which meets this requirement.

Next, the arrangement interval of the restraining jig will be described.
When the joining line is a straight line or both ends are free ends, the circumferential torque applied to the joining line depends on the rotation direction, rotation speed and pressing force of the bobbin tool, and therefore the arrangement interval of the restraining jig may be constant. When the member joining line has an inflection point, for example, a wavy curve, the direction in which the tool rotation torque is applied to the joining line and the torque itself change whenever the joining position exceeds the inflection point.
Therefore, for example, in the case of a wave-shaped curve, if the restraining jig is disposed on the inflection point or at a position sandwiching the inflection point, torque fluctuation or torque direction change in the joining line moving direction of the rotary tool will occur. Follow-up makes it possible to achieve good bonding.

  In addition, when the structure has a reduced diameter, such as a rocket, aircraft, or pressure vessel, and one member has a reduced diameter, such as a taper, dome, or end plate, the following problems may occur. is there. For example, although the interval between the shoulder portions is constant, when the thickness of the bonding material changes, the pressure applied to the bonding portion also changes. In this case, since the surplus portion softened at the joining position is sequentially pushed forward in the joining position, the pressure increases sequentially, leading to an increase in torque of the rotary tool. The force in the direction away from the direction joining line also increases. Therefore, it is preferable to vary the arrangement interval of the restraining jigs or the support force so that the restraining strength is varied in the initial and second half of the joining line in proportion to the increase in the torque.

  When there is a further torque increase, the restraining jig comprises a plurality of kinds of restraining means, and the first restraining means restrains and supports the back surface of an adjacent member across the joining line, It includes a connecting part that integrally connects the supporting parts, and the second restraining means is a temporary attachment of the joining line by welding or joining, and the first restraint corresponds to the joining strength on the joining line. If the restraining means and the second restraining means are selected and provided, better bonding is possible.

Next, there is a problem of restraining means on both the front and back sides.
Although the restraining jig has mentioned the restraining means located on the back side of the member, when the restraining means is provided on the front surface side, the rotary tool is attached to the machine spindle, so that it is fixedly disposed on the joining member. Have difficulty. Therefore, it is preferable that the surface restraining means located on the member surface is attached to the main shaft side supporting the rotary tool and moved along the joining position.

  According to a second aspect of the present invention, the rotary tool is rotated while holding the both surfaces of the base material with a pair of upper and lower shoulders positioned on the front and back surfaces of the member joining line to cause frictional heat input from both the front and back surfaces of the member joining line. A bobbin tool that stirs the softened region with a probe between the pair of upper and lower shoulders, and a restraining jig is configured to be movable along the rotary tool. The restraining jig sandwiches the joining line. A plurality of support portions that restrain and support the back surfaces of adjacent members, and a connection portion that integrally connects the support portions, and the support portions move while rolling or sliding on the back surface of the member. A restriction member, and a restriction jig having the restriction restriction member is configured to be movable so as to face the restriction restriction member located on the surface side of the member.

According to such an invention, the supporting portions are not individually pressed as in the prior art, but are integrally restrained and supported by connecting the plurality of supporting portions that restrain and support the back surface of the member at the connecting portions. Therefore, even when the restraining jig moves along the joining line, it can be restrained and supported with an equal pressing force while maintaining a support balance on the left and right or front and rear, the support part is different from the roll of the prior art, Because it is a restraint restricting member that moves while rolling or sliding on the back of the member, in other words, restraint support force sufficient to counter the circumferential torque of the rotating tool in order to restrain and support by the surface rather than by points or lines Have
And since this invention is comprised so that both the member back surface side and the surface side can face and move, and is restrained by the restraint regulation member, restraint force becomes still stronger.

  Specifically, in the case of a manufacturing apparatus for a joining line structure in which the joining line of the member includes a straight line shape, the back side restraint restricting member is restricted in movement in the joining line orthogonal direction along the guide rail via the connecting portion. However, it is configured to be movable in the joining line direction.

  As a result, even when there is a change in shaft torque, the restraining jig can be restrained and supported at a constant width interval along the joint line without causing the restraining jig to fluctuate in the direction perpendicular to the joint line or cause shaft runout. Become.

  Further, in the case of a manufacturing apparatus for a joined wire structure including an arc shape in which the joining line of the member has an inner circumferential side on the back surface side and an outer circumferential side on the front surface side, the back side restraint restricting member is connected to the center of the member arc via the connecting portion And is configured to be movable along an arc-shaped joining line while being restricted in movement in the direction orthogonal to the joining line by the rotation of the turning member. And

  According to such an invention, since the constraining restriction is concentrically along the joint line on the inner circumference, not only the restraint support at a constant width interval parallel to the joint line is possible, but also the joint line It is possible to restrict the contact in the radial direction to be further away from each other, and it is possible to support restraint with a more uniform pressure.

  Furthermore, it is preferable that both ends of the rotating member extend radially from the center of the member arc toward the inner peripheral side, and the back-side restraint restricting member is connected to the extended both ends via a connecting portion. It is good to be.

According to this invention, a pair of restraining jigs can be positioned symmetrically with respect to the cylindrical joining member, and the rotating member can be shared.
Also in the present invention, the bonding line restraining means is a restraining means located on the back side of the member, and it is preferable that the back surface restraining means be disposed facing the surface restraining means located on the member surface. It is as follows.

  According to a third aspect of the present invention, the rotating tool rotates while holding the both surfaces of the base material with a pair of upper and lower shoulders positioned on the front and back surfaces of the member joining line, and causes frictional heat input from both the front and back surfaces of the member joining line. A bobbin tool that stirs the softened region with a probe between a pair of upper and lower shoulders, and the joining line restraining means is arranged around the rotary tool so as to restrain between adjacent members across the joining line. The restraining part is characterized in that the restraining part is integrally formed by one member or the support is formed by one member, more specifically, the restraining jig or the support thereof is It is a cylinder or a ring circle formed concentrically with the back side shoulder.

  According to this invention, not only is the connection part connecting the front side (left side) restraint part and the rear side (right side) restraint part of the rotary tool unnecessary, but the restraint jig is concentric with the back side shoulder. In the case of the formed cylinder or ring, the front and rear, right and left restraint support can be integrally performed with one member, in other words, the front and rear and right and left axially symmetrical restraint support can be performed with one member. Is very advantageous.

In this case, it is preferable that the restraining jig is connected to the rear side shoulder via a rotation preventing mechanism, so that co-rotation can be prevented and smooth restraint support is possible.
Such an anti-rotation mechanism can be achieved smoothly with a simple mechanism as long as it is a bearing provided on the outer periphery of the shoulder or a pin connection provided on the shoulder shaft center.

  Further, the joining line restraining means on the front surface side can be constituted by a bearing disposed on a cylinder or ring circle formed concentrically with the rear shoulder.

  The restraining jig is not used only on the back side, but is connected to the front side shoulder and the back side shoulder via a rotation prevention mechanism, respectively, and restrains and holds both the front and back sides of the member regardless of the rotation of the shoulder. It is preferable to use a restraining jig.

  In this case, the surface-side restraining jig is a slidable surface contact or a point or line contact support force due to rolling of a ball or a ball, while the back-side restraining jig is elastic such as a spring. It is a biasing pressure support force that allows vertical movement using force and fluid pressure.

  According to this invention, the mechanical spindle side is a rigid restraint with no position fluctuation, and as a result, a function as a surface plate is provided, while the back side restraint jig provides an elastic force such as a spring and fluid pressure. For example, if the biasing pressure supporting force that allows vertical movement is utilized, even if the thickness of the bonding material fluctuates, it can follow this. In particular, the surface of the bonding material is generally uneven and has a certain thickness. is not. In particular, when the bonding material is long, this change in thickness is significant. Further, even when the thickness of the bonding material is constant, the height of the bonding material surface also changes due to frictional heat during the bonding process. Therefore, the position of the tool in the joining process can be adjusted according to changes in the unevenness on the surface of the joining material.

  According to a fourth aspect of the present invention, the rotary tool is rotated while holding the both surfaces of the base material with a pair of upper and lower shoulders positioned on the front and back surfaces of the member joining line to cause frictional heat input from both the front and back surfaces of the member joining line. A bobbin tool that stirs a softened region with a probe between the pair of upper and lower shoulders, and the restraining jig restrains a displacement in the front-rear direction of the joining line between adjacent members across the joining line. It consists of a constraining part located on the front side and the rear side of the joining position of each member across the rotary tool, and a connecting part that integrally connects between the front and rear restricting parts. A movement restricting member that allows movement only along the joining line is provided.

  In this case, in the apparatus for manufacturing a joined wire structure in which the joining line of the member includes a linear shape, the movement restricting member is a guide rail configured to be movable in the joining line direction while being restricted in the joining line orthogonal direction. In addition, in the case of a manufacturing apparatus for a joined wire structure including an arc shape in which the joining line of the member has an inner circumferential side on the back side and an outer circumferential side on the front side, the movement restricting member is supported rotatably about the member arc center. The rotating member is configured to be movable along an arc-shaped joining line while being restricted in movement in the direction orthogonal to the joining line by the rotation of the rotating member, and preferably both ends of the rotating member are members. As described above, it is preferably extended radially from the center of the arc toward the inner periphery, and the back-side restraint restricting member is preferably connected to the extended ends via a connecting portion. is there.

  According to a fifth aspect of the present invention, the restraining means is provided with a platen function, and the rotating tool is rotated while holding the both surfaces of the base material with a pair of upper and lower shoulders positioned on both the front and back sides of the member joining line. A bobbin tool that stirs the softened region with the probe between the pair of upper and lower shoulders while causing frictional heat input from both the front and back surfaces of the member joining line, and the restraining means is adjacent to each other across the joining line. A stepped portion provided on an extended line extending substantially parallel to a joining line of the member, and the stepped portion is fitted to a fitting portion provided in a support portion for supporting the member, the position of which is restricted at least in the width direction. And a passage space for the back side shoulder is formed in a space below the member between the fitting portions of the support portion with a joining line interposed therebetween.

According to this invention, it is possible to restrain and support the joining line width direction (left and right direction) using the step on the back surface of the joining member, and the step portion has a surface plate function for directly fixing the joining member. Therefore, the restraint support is rigid and stable. In addition, an independent restraining jig is not required, and a passage space for the back side shoulder is formed in the space below the member between the fitting portions of the support portion with the joining line interposed therebetween. There is no hindrance.
In this case, the member back side sandwiching the joining line sandwiched between the stepped portions is formed thicker than the outer member thickness, so that the thinning at the time of joining can be compensated from the back side and restraint support in the width direction Is easy.

Further, if the fitting portion provided in the support portion is a pressing force biasing member that clamps the member step portion in the joining line direction from the side surface, even if the joining member is long, it is surely supported in the width direction. it can.
The pressing force urging member may be a screw fastening member attached to the support portion and having a stepped portion and a fitting portion, but a spring force or a magnetic force may be used.

As described above, according to the present invention, it is possible to solve various problems caused by the displacement force in the front-rear direction caused by the rotation of the bobbin tool or the force in the direction away from the joining line in the left-right direction of the joining position. Bonding can be performed.
In particular, according to the first invention, unlike the restraining means using rollers shown in the prior art, the front and rear stages are constrained by the connecting portion in the direction orthogonal to the joining line, and the front stage and the current stage or the rear stage are spaced apart in the front-rear direction. The displacement in the front-rear direction is also restrained by the strength structure between the current-stage and the next-stage restraining jigs (fixed positions are a plurality of points on the left and right sides).
Moreover, although the restraining jig is fixedly arranged at predetermined intervals along the joining line, there is no problem in joining because the passage space for the rear side shoulder is formed at the connecting portion.

  According to the second and fourth inventions, the rollers are not individually pressed as in the prior art, but a plurality of support portions that restrain and support the back surface of the member are connected at the connection portions. Since the restraint support is integrally performed, even when the restraint jig moves along the joining line, it can be restrained and supported with an equal pressing force while maintaining a support balance on the left and right or front and back. Unlike conventional rolls, it is a restraining restricting member that moves while rolling or sliding on the back of the member.In other words, it is constrained and supported by a surface rather than a point or line, so it counters the circumferential torque of a rotating tool. And sufficient restraint support force.

  According to the third aspect of the present invention, not only is the connection part connecting the front side (left side) restraint part and the rear side (right side) restraint part of the rotary tool unnecessary, but the restraining jig is concentric with the back side shoulder. In the case of a cylindrical or ring circle formed in the shape, the front and rear, right and left restraint support can be integrally performed with one member, in other words, the front and rear, right and left axially symmetrical restraint support is performed with one member. Can be very advantageous.

  According to the fifth invention, it is possible to restrain and support the joining line width direction (left and right direction) using the step on the back surface of the joining member, and the step portion has a surface plate function for directly fixing the joining member. Since it is directly fitted to the fitting part provided in the support part, the restraint support is rigid and stable. In addition, an independent restraining jig is not required, and a passage space for the back side shoulder is formed in the space below the member between the fitting portions of the support portion with the joining line interposed therebetween. There is no hindrance. Has various chopsticks effects.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified, but are merely illustrative examples. Not too much.

1A and 1B are views for explaining an apparatus for manufacturing a joined structure of a plurality of members by friction stirring according to the first invention, wherein FIG. 1A is a plan view and FIG. 1B is a front sectional view.
The bobbin tool used in the present invention has a front side shoulder 1 and a back side shoulder 2 having circular shoulder surfaces for applying frictional heat from both the front and back sides of the workpiece (member 4), and the center axis of both circular shoulder surfaces. It consists of a probe shaft 3 that is vertically connected and a machine main shaft 6 on which a front-side shoulder 1 is fitted. For friction stir welding, for example, the rotational speed of the tool is 300 to 1200 rpm, and the feed speed (the moving speed of the tool). Is set to 100 to 1000 mm / min.

In the present embodiment, a first type joining line restraining jig 10 that restrains a state in which a plurality of members 4 are abutted along a linear or curved member joining line 5 and the plurality of members 4 are joined lines. In order to perform friction stir welding from the front and back both sides of 5, the present invention is applied to a flat or curved joining structure manufacturing apparatus provided with a rotary tool (bobbin tool) having shoulders 1 and 2 on both front and back sides. .
That is, the plates or molds 4A and 4B extending in the longitudinal direction, such as a railway vehicle structure, a ship structure, and a building structure, are brought into contact with each other and restrained by a rectangular joining line restraining jig 10 from the back side and joined by a bobbin tool. In order to solve the bonding failure caused by the displacement force in the front-rear direction due to the rotation of the bobbin tool at the joining position and the force in the direction away from the joining line in the left-right direction, The joining wire restraining jig 10 integrally connects the pair of left and right fixed support portions 10A and 10A for restraining and supporting the back surfaces of the adjacent members 4A and 4B across the joining wire 5 and the supporting portions 10A and 10A. The connecting portion 10B is formed with an inverted gate-shaped connecting portion 10B, and a passage space 100 for the back-side shoulder 2 is formed in the connecting portion 10B. A is a fixing portion where the back surface of the member is screwed with the bolt 11, and the portal-shaped joining line restraining jig 10 is provided on the back surface of the joining member 4 with the joining line being sandwiched at predetermined intervals along the joining line 5. Are arranged at predetermined intervals.

According to such an embodiment, if the gate-shaped joining line restraining jig 10 having the fixing support portions 10A and 10A at the open ends is disposed so as to straddle the adjacent members 4A and 4B along the joining line 5, In the direction orthogonal to the joint line 5, it is restrained left and right by the connecting portion 10 </ b> B, and in the front-rear direction, the strength structure between the joint line restraining jigs 10, 10 at the previous stage and the current stage or the current stage and the next stage through a predetermined interval There is also a displacement in the front-rear direction due to the fixed support portions 10A, 10A being fixed to the adjacent members 4A, 4B (back surface) 10C along the joining line 5 by 10 points on the left and right sides. Be bound.
Moreover, the joining line restraining jig 10 is fixedly arranged at predetermined intervals along the joining line 5. However, since the passage space 100 of the back side shoulder 2 is formed at the connecting portion 10 </ b> B, there is no need for joining. There is no hindrance.
When the joining member 4 is a non-magnetic material, the fixing member is not limited to screwing but may be a fixing part by any one of welding, adhesion, fitting, and adsorption. Even if 10A has a configuration in which the back surface of the joining member 4 is screwed, fitted, and welded and a screw hole, a fitting hole, or the like remains on the back surface, there is no need for post-processing because the joining member 4 is on the inner surface side. In addition, particularly in the case of screwing or fitting, there is an effect that the internal construction member can be attached using a screwing hole or a fitting recess.

FIG. 2A shows a second type of joining line restraining jig 12 that restrains a state in which a plurality of members 4 are butted along the member joining line 5, and is adjacent to the joining line 5 in particular. In order to restrain and support the back surfaces of the members 4A and 4B, a restraining jig 12 configured to fix the fixing portion 12C attached to the pair of left and right fixed support portions 12A to the back surface of the member with a vacuum suction or electromagnet suction function. In this example, 12B is a connecting portion and corresponds to 10B in the above-described embodiment.
FIG. 2B shows a third type of joining line restraining jig 13 that restrains a state in which a plurality of members 4 are butted along the joining line 5, and is adjacent to the joining line 5 in particular. An example of a restraining jig 12 configured to fix an anchoring portion 13C attached to a pair of left and right fixing support portions 13A to have a bonding function in order to restrain and support the back surfaces of the members 4A and 4B to be fixed. , 13B is a connecting portion and corresponds to 10B and 12B in the above-described embodiment.
Then, a second type joining line restraining jig 12 in which the fixing portion 12C is configured by vacuum suction or electromagnet suction will be described with reference to FIG. 2A. The restraining jig 12 sandwiches the joining line 5 between them. A pair of left and right vacuum adsorbing or electromagnet adsorbing functions 12C and 12C for restraining and supporting the back surfaces of the adjacent members 4A and 4B, fixed support parts 12A and 12A comprising a cylindrical base for supporting this on the lower surface side, and A bar-shaped connecting portion 12B that integrally connects the cylindrical bases 12A and 12A, which are fixed supporting portions, is formed, and a passage space 100 for the back-side shoulder 2 is formed above the connecting portion 12B. A plurality of the joining line restraining jigs 12 are arranged along the joining line 5 at predetermined intervals on the back surface of the joining member 4 with the joining lines being sandwiched at predetermined intervals.

  In the case of the present embodiment, when the joining member 4 is a magnetic body, electromagnet adsorption is good, and when it is a non-magnetic body, vacuum adsorption may be used. It is easy to remove the restraining jig after fixing and joining.

FIG. 2B is a cross-sectional view for explaining a third type joining line restraining jig 13 in which the fixed support portion is formed by bonding.
The joining line restraining jig 13 is a flange that supports this with a lower surface side flange via fixing portions 13c and 13c that function as adhesive surfaces that restrain and support the back surfaces of the adjacent members 4A and 4B across the joining line 5. Fixed support portions 13A and 13A made of a cylindrical base with a bar and a bar-like connection portion 13B integrally connecting the fixed support portions 13A and 13A made of the cylindrical base, and the back surface side above the connection portion 13B A passage space 100 for the shoulder 2 is formed. A plurality of the restraining jigs 13 are arranged at predetermined intervals along the bonding line 5 on the back surface of the bonding member 4 with the bonding lines interposed at predetermined intervals.

When the fixing parts 13c, 13c are fixing parts using an adhesive, when the distance from the joining line 5 is 25 to 50 mm away, the heating temperature at that time is reduced due to the temperature drop due to the heat propagation of the frictional heat input of the rotary tool. If the fixing part 13C is set at a position 20 to 50 mm apart from the joining line 5 so as to be below the durable temperature of the adhesive, problems such as thermal deterioration due to friction stir welding can be solved.
In this case, by setting the durability temperature of the adhesive to be equal to or lower than the softening temperature of the joining member, even when heat is applied to the adhesive surface after joining and the adhesive is peeled off, the joining portion does not deteriorate in strength. .
For example, in the case of an aluminum alloy, the softening point of friction stir welding is 400 to 600 ° C., whereas in the case of a resin adhesive, the heat durability temperature is around 250 ° C., which meets this requirement.

Next, the arrangement interval of the restraining jig will be described.
4A and 4B show a friction stir bonded body manufacturing apparatus according to the first invention for bonding corrugated sheets having corrugated curves, wherein FIG. 4A is a front sectional view, and FIG. It is a schematic diagram for arranging along. The same reference numerals as those in the above embodiments denote the same members.
A bobbin tool 0 includes a front-side shoulder 1, a back-side shoulder 2, a probe shaft 3, and a mechanical spindle 6 on which the front-side shoulder 1 is fitted. When the joining line 5 of the joining members 4A and 4B is a straight line or both ends are free ends, the circumferential torque applied to the joining line 5 depends on the rotational direction, rotational speed and pressing force of the bobbin tool 0. The arrangement intervals of the restraining jigs 10 to 13 shown in FIG. 2 may be constant as shown in FIG. 2C, but as shown in FIG. 4B, the member joining line 5 has a curved vertex 5a. In the case of a wave shape curve, every time the joining position exceeds the curve vertex 5a (the maximum value and the minimum value of the wave shape curve in this example), the direction in which the tool rotation torque is applied to the joining line 5 and the torque itself are also included. (Curve vertices refer to points indicating the maximum value and minimum value or maximum value and minimum value of a continuous function).
Therefore, for example, when the joining line 5 is a wave-like curve, if the restraining jig 15 is disposed on the curve vertex 5a or at a position sandwiching the curve vertex 5a, the torque fluctuation in the joining line moving direction of the bobbin tool 0 is achieved. In addition, it is possible to follow the torque direction change and to perform good bonding.

3A and 3B show a friction stir joined body manufacturing apparatus according to the first invention for joining the end plate 21 and the cylindrical container 22, wherein FIG. 3A is a front sectional view, and FIG. 3B is an arrangement of restraining means along the joining line. It is a schematic diagram for doing. The same reference numerals as those in the above embodiments denote the same members.
In this way, when the joint structure is a rocket, an aircraft, a pressure vessel, one member has a reduced-diameter shape such as a taper, a dome, and an end plate 21, and the other member 22 has a cylindrical shape. There is a problem like this. For example, when the circumferentially endless joining line is circulated like cylinders, the interval between the front-side shoulder 1 and the rear-side shoulder 2 is constant, but the surplus portions softened in the initial stage of joining are sequentially formed. Since the pressure is pushed forward in front of the joining position, the pressure sequentially increases, leading to an increase in torque of the rotating tool, and the displacement force in the front-rear direction due to the rotation of the bobbin tool 0 and the force in the direction away from the joining line in the left-right direction also increase. Therefore, it is preferable that the arrangement interval or the supporting force of the restraining jig 14 is made different so that the restraining strength is made different between the initial and second half of the joining line in proportion to the increase in the torque.
Specifically, the arrangement interval is sequentially reduced along the moving direction of the bobbin tool 0. For example, in FIG. 3A, (14 _{1 to} 14 ₂ ) B ₁ > A ₁ (14 _{1 to} 14 ₀ )
In FIG. 3B, (14 _{3 to} 14 ₂ ) C ₂ > (14 _{1 to} 14 ₂ ) B ₂ > A ₂ (14 _{1 to} 14 ₀ ) is set.
Here, FIG. 3 _{B 1} of (A) the distance from the restraining jig 14 ₁ to constraining jig 14 _{2, A 1} refers people each apart from constraining jig 14 ₁ to constraining jig 14 _0.
Figure 3 _{B 2} the distance from the restraining jig 14 ₁ to constraining jig 14 _{2, A 2} is the interval from the restraining jig 14 ₁ to constraining jig 14 ₀ (B), _{C 2} is constrained jig 14 ₃ It refers respectively to intervals up constraining jigs 14 ₂ from. The drawings on the restraint jig ₍₁₄ 3 to 14 _{2) B 2} of _{C 2} and the restraining jig ₍₁₄ 1 to 14 ₂₎ of have been drawn as if they were equidistant, which side the cylindrical portion Since it is seen through from the direction, the length of the curvature portion is not considered, and the actual distance considering the length of the curvature portion is the side wall from B ₂ of the restraining jig (14 _{1 to} 14 ₂ ) at the center position. restraining jig on the side ₍₁₄ 3 to 14 ₂₎ If _{C 2} is a long distance (ie, the _C 2> _{B 2} relationship).

When the diameter of the other member 22 is cylindrical, such as a taper, dome, or end plate 21, and when the torque increases as the bobbin tool 0 moves further in the circumferential direction, the mechanical The restraining means 145 temporarily attached by welding or joining to the restraining jigs 10 to 14 is added to the portion where the torque is increased. Specifically, as shown in FIG. ingredients ₁₄ 1-14 _2, the first constraining means and the second constraining means in accordance with a process such as tack has been provided restraining means 145 at welded or bonded during mechanical restraint jig ₁₄ 1-14 ₀ You may use it in combination. As described above, if the first restraining means and the second restraining means are combined in correspondence with the increase in the joining strength on the joining line, or one is selected and provided in correspondence with the reduction in the joining strength on the joining line, it is further provided. Good bonding is possible.

FIGS. 5A and 5B are views for explaining a manufacturing apparatus for a joined structure of a plurality of members by friction stirring according to the second invention, wherein FIG. 5A is a front sectional view and FIG. 5B is a plan view. The same reference numerals as those in the above embodiments denote the same members.
In this embodiment, the back side restraining jig is configured to be movable along the bobbin tool 0, and the restraining jig is constituted by the back side roller 18 as in the prior art (Patent Document 2). However, the plurality of back-side rollers 18, 18 that restrain and support the back surfaces of the adjacent joining members 4A, 4B across the joining line 5 and the plurality of back-side rollers 18, 18 are integrally connected. The H-shaped connecting portion 40 includes a plurality of back-side rollers 18 and 18 which are restraining restricting members that move while rolling or sliding on the back surfaces of the members 4A and 4B. Since the roller receiving portion 40B is supported rigidly from below, the function as a restraining jig can be achieved smoothly. Further, the front side roller 19 located on the front side of the joining members 4A and 4B is also configured to be movable so as to face the back side roller 18 on the back side.
And, in the case of the manufacturing apparatus of the joining line structure in which the joining line 5 of the joining member 4 includes a straight shape as in the present embodiment, the back side rollers 18 and 18 are guide grooves 40A in the center of the H-shaped connecting portion 40. It is configured to be movable in the joining line direction while being restricted in movement in the direction orthogonal to the joining line 5 along the guide rail 43.

According to such an embodiment, the rollers 18 and 18 are not individually pressed as in the prior art, but a plurality of rollers 18 and 18 that restrain and support the back surface of the member are integrally formed with an H-shaped connection portion. 40, and is integrally supported by restraint so that even when the plurality of rollers 18 and 18 move along the joining line 5, they are restrained and supported with equal pressing force while maintaining a support balance on the left and right or front and rear. In order that the plurality of rollers 18, 18 function as a restraining restricting member that moves while rolling or sliding on the back surface of the member, unlike the conventional roll, It has sufficient restraining support force against the circumferential torque of the rotary tool.
In the present invention, since the plurality of rollers 18 and 18 on the back side of the member and the plurality of rollers 19 and 19 on the front side are configured to face each other and are restrained by the restraining restricting member, the restraining force is further increased. Become strong.
As a result, even when there is a change in shaft torque, the restraining jig can be restrained and supported at a constant width interval along the joint line without causing the restraining jig to fluctuate in the direction perpendicular to the joint line or cause shaft runout. Become.

FIGS. 6A and 6B are views for explaining a manufacturing apparatus for a joined structure of a plurality of members by friction stirring according to the third invention, wherein FIG. 6A is a front sectional view and FIG. 6B is a sectional view taken along line AA. The same reference numerals as those in the above embodiments denote the same members.
In this embodiment, the restraining jig 16 is a cylinder formed concentrically with the back-side shoulder 2 or a ring circle whose upper and lower surfaces are reduced in an R shape, and a bearing 26 is interposed between the two and the back side. The rotation is stopped regardless of the rotation of the shoulder 2, and the front side, the rear side, and the left and right of the joining position around the rotary tool between the adjacent members 4A and 4B across the joining line 5 are constrained integrally. Yes.
Also on the front side, 17 is a cylinder or ring having a concentric shape with the surface side shoulder 1 and whose upper and lower surfaces are reduced in diameter to an R shape, and a bearing 26 is interposed between the two and is independent of the rotation of the shoulder 1. The front side, the rear side, and the left and right of the joining position around the bobbin tool 0 between the adjacent members 4A and 4B across the joining line 5 are integrally restrained.

  According to this invention, not only is the connection part connecting the front side (left side) restraint part and the rear side (right side) restraint part of the bobbin tool 0 unnecessary, but the restraining jigs 16 and 17 are provided on the back side shoulder. 2 is a cylindrical or ring shaped concentric with the bobbin tool 0, so that the front and back and left and right restraint support can be integrally performed with one member, in other words, the front and rear and right and left axisymmetric restraint support is possible. This can be done with one member and is very advantageous.

  In this case, the restraining jigs 16 and 17 are preferably connected to the shoulders 1 and 2 through a rotation prevention mechanism such as a bearing 26, whereby co-rotation can be prevented and smooth restraint support can be achieved. It becomes possible.

  FIG. 9 shows an improved example of the present invention. The same reference numerals as those in the above-described embodiments indicate the same members. In this embodiment, the restraining jig is a bearing 160 provided on the upper surface of the ring circle 161 fixed concentrically with the back side shoulder 2. Since the restraining jig is the bearing 160, the back side shoulder 2 is provided. In addition, the front side, the rear side, and the left and right of the joint position around the bobbin tool 0 between the adjacent members 4A and 4B across the joint line are integrally restrained by rolling according to the rotation of the ring circle 161. I am letting. Further, the ring circle 161 is provided with a spring, air pressure, hydraulic pressure 164 or the like interposed between a flange 162 provided on a shaft suspended from the center of the lower surface of the back side shoulder 2 and the ring circle 161, and the spring, air pressure Further, an urging pressure supporting force that allows vertical movement is provided using hydraulic pressure 164 or the like. Therefore, the ring circle 161 and the outer periphery of the back side shoulder 2 are configured to allow vertical movement by the spline coupling 163.

Also on the front side, the restraining jig is a bearing 170 provided on the lower surface of a ring circle formed concentrically with the surface side shoulder 1, and since the restraining jig is the bearing 170, the surface side shoulder 1 and the ring By rolling and rotating in accordance with the rotation of the circular body 171, the front side, the rear side, and the left and right of the joint position around the bobbin tool 0 between the adjacent members 4A and 4B across the joint line are integrally restrained. Yes.
As a result, the surface-side restraining jig is a slidable surface contact or a point or line contact support force due to rolling of a ball or a ball, while the back-side restraining jig is an elastic force such as a spring. The bias pressure support force that allows the vertical movement using the fluid pressure.

  According to this invention, the restraining jig of the front side shoulder 1 on the machine main spindle 6 side is a rigid restraint without position fluctuation, and as a result, it can have a function as a surface plate, while the back side restraining jig has For example, if the biasing pressure supporting force allows the vertical movement using the elastic force of the spring or the like and the fluid pressure, it can follow even if the thickness of the bonding material varies. In particular, the surface of the bonding material is generally uneven, and does not have a constant thickness. Further, even when the thickness of the bonding material is constant, the height of the bonding material surface also changes due to frictional heat during the bonding process. Therefore, according to the present embodiment, the position of the tool in the joining process can be adjusted according to the change in the irregularities on the surface of the joining material.

In the first example shown in FIGS. 7A to 7B, the restraining jig 30 restrains the displacement in the front-rear direction of the joining line 5 between the joining members 4 </ b> A and 4 </ b> B adjacent to the joining line 5. In addition, a constraining portion composed of rollers 18 positioned on the front side and the rear side of the joining position of the respective joining members 4A and 4B with the bobbin tool 0 interposed therebetween, and the front side and the constraining portion on the rear side are integrally formed. The connecting part 31 is provided with a movement restricting member 33 that allows movement only along the joining line.
In this embodiment, the support frame 31b for supporting the roller 19 is provided on the protruding portions 31a on both the left and right sides of the H-shaped connecting portion 31. Further, the movement restricting member 33 has a rectangular frame projecting from the rear shoulder 2. A pin shaft 27 is supported by a bearing 28 via a bearing 28 regardless of the rotation of the back side shoulder 2, and a tension coil spring 34 is interposed in the quadrant of the rectangular frame, and the roller 18 is attached to the members 4 </ b> A, 4 </ b> B. It is energized in the restraining direction.

  In the second example shown in FIGS. 7C to 7D, the restraining jig 44 restrains the displacement in the front-rear direction of the joining line 5 between the joining members 4 </ b> A and 4 </ b> B adjacent to the joining line 5. In addition, a roller 18-like restraining portion located on the front side and the rear side of the joining position of each joining member 4A, 4B across the bobbin tool 0 is integrally formed between the front and rear restraint portions. The connecting rail 41 is provided with a guide rail 43 as a movement restricting member that is allowed to move only along the joining line 5. 5 is configured to be movable in synchronization with the bobbin tool 0 along the guide groove 40 </ b> A along the line 5. The roller 18 is a restraint restricting member that moves while rolling or sliding on the back surfaces of the joining members 4A and 4B. The roller 18 is rigidly supported from below by a roller receiving portion 40B of an H-shaped restraining jig 44. Therefore, the function as a restraining jig can be achieved smoothly.

  FIG. 8 is a view showing an apparatus for manufacturing a joined structure for joining circumferential joining lines of cylindrical members by friction stirring according to the fourth invention, and the restraining jig 30 is an inner circumference side of a circumferential shaped joining member 45. In order to restrain the displacement in the longitudinal direction of the joining line, a restraint portion in the form of a roller 18 located on the front side and the rear side of the joining position of the joining members 45, 45 across the bobbin tool 0, and the front side In addition to the H-shaped connecting portion 50A that integrally connects the restraining portions on the rear side with each other, the restraining jig 30 including the roller 18 and the connecting portion 50B is also symmetrically disposed at the 180 ° symmetrical position. A movement restricting member that allows movement of the parts 50A and 50B only along the joining line is formed by a rotating member 51 that is rotatably supported on the inner peripheral center 52 of the member. Circles are restricted while moving in the direction perpendicular to the joint line The rotating member 51 is preferably configured such that both ends of the rotating member 51 extend radially from the center of the arc of the member toward the inner peripheral side, and are connected to the extended ends. The back side restraint restricting members (rollers 18 and 18) are connected via the parts 50A and 50B.

  According to such an embodiment, the restraining jig 30 can rotate and restrain at the 180 ° symmetrical position while being restrained and supported concentrically along the joining line on the inner circumference. Therefore, not only restraint support at a constant width interval parallel to the joining line is possible, but also the radial direction of the rotating member 51 in the direction orthogonal to the joining line is possible, and even more uniform pressure is possible. Can be supported.

  Furthermore, both ends of the rotating member 51 are extended in the radial direction from the center of the member arc toward the inner peripheral side, and the back side restraint restriction is applied to the extended both ends via connecting portions 50A and 50B. Since the rollers 19 are connected, the pair of restraining jigs 30 can be positioned symmetrically with respect to the cylindrical joining member 45, and the rotation member 51 can be shared.

FIG. 10 is a view for explaining a first example and a second example showing a manufacturing apparatus for a joined structure of a plurality of members by friction stirrer according to the fifth invention, (A) is a basic configuration diagram, B) shows an application diagram.
In (A) of the present embodiment, the restraining means has a surface plate function, and the restraining means is substantially parallel to the joining lines of the respective joining members 4A and 4B adjacent to each other across the joining line. A stepped portion 04 provided on the extended line, and the stepped portion 04 is positioned at least in the width direction on the fitting portion 61 provided on the support portion 65 (surface plate) that supports the joining members 4A and 4B. While being regulated and fitted, a passage space 60 for the back side shoulder is formed in the space below the joining members 4A, 4B between the fitting parts 61-61 of the support part 65 with the joining line interposed therebetween. .

According to this embodiment, the stepped portion 04 on the back surface of the bonding member can be used to restrain and support the bonding line width direction (left and right direction), and the stepped portion 04 can be used to directly fix the bonding members 4A and 4B. Since it is directly fitted to the fitting part 61 provided on the support part 65 having a plate function, the restraint support is rigid and stable. In addition, an independent restraining jig is unnecessary, and the passage space 60 of the back side shoulder 2 is formed in the member lower space between the fitting portions 61-61 of the support portion 65 with the joining line interposed therebetween. There is no problem in performing the joining operation.
In this case, the members 4A and 4B on the back side sandwiching the joining line sandwiched between the stepped portions 04 are formed thicker than the outer member thickness, so that the thickness reduction at the time of joining can be compensated from the back side. It is easy to restrain and support the direction.

  An application example of the fifth invention shown in FIG. 10 (B) uses a gate-type support frame 70 as the restraining means, and the restraining means has each of the joining members 4A adjacent to each other across the joining line. A stepped portion 04 provided on an extended line extending substantially parallel to the joint line of 4B and the upper surface of the support frame 70 support the joint members 4A and 4B, and an L-shaped fitting provided on the support frame 70. In the joint portions 71 and 71, the stepped portion 04 is fitted in a position-restricted position in the width direction, and in a member lower space between the fitting portions 71-71 of the support frame 70 with a joining line interposed therebetween, A passage space 60 for the back side shoulder 2 is formed.

Further, the L-shaped fitting portion 71 provided on the support frame 70 has a pressing force that clamps the fitting portions 61 and 61 located on both sides in the width direction of the member stepped portion 04 in the joining line direction from the side surface by the screw shaft 72a. If it is the urging member 72, even if the joining member is long, it can be reliably restrained and supported in the width direction.
The pressing force urging member 72 is preferably composed of a screw tightening member 71a that is attached to the support frame 70 and has an L-shaped fitting portion 71 that fits the fitting portions 61 and 61. As shown in FIG. 10 (A), an L-shaped support frame 62 may be erected from the support portion 65, and the surface of the joining members 4A and 4B may use the spring force of the spring 63, or may use magnetic force. Also good.

  According to the present invention, it is possible to solve various problems caused by the displacement force in the front-rear direction caused by the rotation of the bobbin tool or the force in the direction away from the joining line in the left-right direction of the joining position, and to perform good friction stir welding. Manufacturing equipment can be provided.

It is a figure for demonstrating the manufacturing apparatus of the joining structure body of the multi-row member by the friction stirring by this 1st invention, (A) is a top view, (B) is front sectional drawing. (A) is an example in which the fixing part is configured by vacuum adsorption or electromagnet adsorption, (B) is a cross-sectional view for explaining an example in which the fixing part is configured by adhesion, and (C) is a restraining means arranged along the joining line. It is the schematic for doing. 1 shows a friction stir welded body manufacturing apparatus according to the first invention for joining an end plate and a cylindrical container, (A) is a front sectional view, and (B) is a schematic diagram for arranging restraining means along a joining line. It is. 1 shows a friction stir joined body manufacturing apparatus according to the first invention for joining corrugated plates having inflection points, (A) is a front sectional view, and (B) is a means for arranging restraining means along a joining line. FIG. It is a figure for demonstrating the manufacturing apparatus of the joining structure body of the multi-row member by the friction stirring by 2nd invention, (A) is front sectional drawing, (B) is a top view. It is a figure for demonstrating the manufacturing apparatus of the joined structure of the multi-row member by friction stirring by 3rd invention, (A) is front sectional drawing, (B) is AA sectional view. It is a figure for demonstrating the 1st example and 2nd example which show the manufacturing apparatus of the joining structure body of the multi-row member by friction stirring by 4th invention, (A)-(B) shows a 1st example. (A) is front sectional drawing, (B) is the AA sectional view. (C)-(D) shows a 2nd example, (C) is front sectional drawing, (D) is the AA sectional view. The manufacturing apparatus of the joining structure which joins the circumferential joining line of the cylindrical member by the friction stirring by 4th invention is shown. It is a figure for demonstrating the 1st example and 2nd example which show the manufacturing apparatus of the joining structure body of the multi-row member by friction stirring by 4th invention, (A)-(B) shows a 1st example. (A) is front sectional drawing, (B) is the AA sectional view. (C)-(D) show a 2nd example, (A) is a front sectional view, and (B) is the AA line sectional view. It is a figure for demonstrating the 1st example and 2nd example which show the manufacturing apparatus of the joined structure of the multi-row member by friction stirring by 5th invention, (A) is a basic block diagram, (B) is an application figure. Indicates. It is a figure for demonstrating the other example of manufacture of the conjugate | zygote of the multi-row member by the conventional friction stirring.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front side shoulder 2 Back side shoulder 3 Probe shaft 4 (4A, 4B) Joining member 5 Joining line 5a Curve vertex 6 Machine spindle 10-17 Restraint jig 10A, 12A, 13A Fixed support part 10C, 12C, 13C Fixed part 18 Back side roller 19 Front side roller 10B, 12B, 13B, 31, 40, 50A, 50B Connection part 43 Guide rail 51 Rotating member 60, 100 Back side shoulder passage space 04, Stepped part 61, 71 Fitting part

Claims (6)

Joining line restraining means for restraining a state in which a plurality of members are abutted along a straight or curved member joining line, and a friction stir welding of the plurality of members from both front and back sides of the joining line. In a manufacturing apparatus for a planar or curved joined structure, each comprising a rotary tool having a shoulder,
Between the pair of upper and lower shoulders while the rotary tool rotates while holding the both surfaces of the base material with a pair of upper and lower shoulders located on both the front and back sides of the member joining line and causing frictional heat input from both the front and back sides of the member joining line A bobbin tool that stirs the softened region with the probe of
The joining line restraining means includes a plurality of supporting parts that directly restrain and support the back surfaces of adjacent members across the joining line, and a connecting part that integrally connects the supporting parts, and the back side of the connecting part An apparatus for manufacturing a joined structure by friction stirring, wherein a shoulder passage space is formed.   The supporting part is a fixing part formed by any of screwing, welding, adhesion, fitting, adsorption, and magnetic bonding on the back surface of the joining member, and a joining line restraining means having the fixing part is provided along the joining line. The apparatus for manufacturing a joined structure by friction stirring according to claim 1, wherein a plurality of pieces are arranged at predetermined intervals. Joining line restraining means for restraining a state in which a plurality of members are abutted along a straight or curved member joining line, and a friction stir welding of the plurality of members from both front and back sides of the joining line. In the manufacturing apparatus of the joining line structure comprising a rotating tool having a shoulder, the joining line of the member includes an arc shape whose back side is the inner peripheral side and the front side is the outer peripheral side,
Between the pair of upper and lower shoulders while the rotary tool rotates while holding the both surfaces of the base material with a pair of upper and lower shoulders located on both the front and back sides of the member joining line and causing frictional heat input from both the front and back sides of the member joining line A bobbin tool that stirs the softened region with the probe of
The joint line restraining means includes a plurality of support parts that restrain and support the back surfaces of adjacent members across the joint line, and a connection part that integrally connects the support parts, and It is a back side restraint restricting member that moves while rolling or sliding, and the joining line restraining means having the restraint restricting member is configured to be movable so as to face the restraint restricting member located on the member surface side. An apparatus for manufacturing a joined structure by friction stirrer. Bonding line restraining means for restraining a state in which a plurality of members are linearly or curvedly abutted along the joining line, and both sides of the front and back sides for friction stir welding of the plurality of members from both sides of the joining line In the manufacturing apparatus of a planar or curved joint structure, each comprising a rotary tool having a shoulder,
Between the pair of upper and lower shoulders while the rotary tool rotates while holding the both surfaces of the base material with a pair of upper and lower shoulders positioned on both front and back sides of the member joining line, and causing frictional heat input from both the front and back sides of the member joining line A bobbin tool that stirs the softened region with the probe of
The joining line restraining means is a restraining portion arranged around the rotary tool so as to restrain the adjacent members across the joining line, and the restraining portion is integrated or restrained by one member. An apparatus for manufacturing a joined structure by friction stirring, wherein the support is formed of a single member. Bonding line restraining means for restraining a state in which a plurality of joining members are butted along a straight or curved member joining line, and both sides of the front and back sides for friction stir welding of the plurality of members from both the front and back sides of the joining line In the manufacturing apparatus of a planar or curved joint structure, each comprising a rotary tool having a shoulder,
Between the pair of upper and lower shoulders while the rotary tool rotates while holding the both surfaces of the base material with a pair of upper and lower shoulders located on both the front and back sides of the member joining line and causing frictional heat input from both the front and back sides of the member joining line A bobbin tool that stirs the softened region with the probe of
The joining line restraining means is located on the front side and the rear side of the joining positions of the respective members with the rotary tool interposed therebetween in order to restrain the displacement in the front-rear direction of the joining line between the adjacent members across the joining line. And a connecting part that integrally connects the front side and the rear side restricting part, and the connecting part is provided with a movement restricting member that allows movement only along the joining line. A device for manufacturing a bonded structure by friction stirring. Joining line restraining means for restraining a state in which a plurality of members are abutted along a straight or curved member joining line, and a friction stir welding of the plurality of members from both front and back sides of the joining line. In a manufacturing apparatus for a planar or curved joined structure, each comprising a rotary tool having a shoulder,
Between the pair of upper and lower shoulders while the rotary tool rotates while holding the both surfaces of the base material with a pair of upper and lower shoulders located on both the front and back sides of the member joining line and causing frictional heat input from both the front and back sides of the member joining line A bobbin tool that stirs the softened region with the probe of
The joint line restraining means is a step provided on an extended line extending substantially parallel to the joint line of each member adjacent to the joint line, and the fitting provided on the support part for supporting the member. The stepped portion is fitted to the joint portion at least in the width direction, and a passage space for the back side shoulder is provided in the space below the member between the fitting portions of the support portion with the joining line interposed therebetween. An apparatus for manufacturing a joined structure by friction stirring, wherein the apparatus is formed.

Images