• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    ROTATION AND FRICTION WELDING EQUIPMENT AND METHOD OF MANUFACTURING METAL STRUCTURE. The present invention relates to a rotary and friction welding apparatus (1) which includes: a rotary tool (2) provided with a rotating pin (21) at its distal end; the shoulder portion (8), into which the rotary tool (2) is inserted; the rotation drive unit (41), which causes the rotary tool (2) to rotate on an axis; a pressure device (42), which presses the rotary tool (2) and the shoulder portion (8) against an inner corner portion (90); a mobile device (43), which moves the rotary tool (2) and the shoulder portion (8) in a forward direction along the inner corner portion (90); and a wire heating device (45), which heats a wire (50), which is agitated by friction together with two metal members (union target members 91 and 92) by the rotating pin (21).
    公开号:BR112016009172B1
    申请号:R112016009172-8
    申请日:2014-10-01
    公开日:2021-02-09
    发明作者:Hidehito Nishida；Syuhei YOSHIKAWA；Kenichi KAMIMUKI；Hideki Okada；Hiroki ORIBE
    申请人:Kawasaki Jukogyo Kabushiki Kaisha；
    IPC主号:
    专利说明:

    Technical Field
    [0001] The present invention relates to a rotation and friction welding apparatus that performs rotation and friction welding on an inner corner portion that is formed by two metal members connected together, and also refers to a method of manufacture of a metal structure when using the rotary and friction welding apparatus. Background of the Invention
    [0002] Conventionally, rotation and friction welding (FSW) has been known as a method of joining metal members together. In rotation and friction welding, a rotating pin provided at the distal end of a rotating tool is, at the same time as it is rotated, pressed against the target joining portion formed by two metal members to soften the target joining portion and the its vicinity by heating and frictional rotation of the softened joint target portion and its neighborhood, thereby causing a flow of plastic, and then the target joint portion is removed from the rotary tool and cooled. In this way, the two metal members are joined together.
    [0003] Patent Literature 1 describes a rotary tool intended for an inner corner. The rotary tool is used to perform rotation and friction welding on an inner corner portion that is formed by two metal members connected together. The rotary tool includes: a rotating pin that is snapped into an inner corner portion formed by two metal members connected together; and a shoulder portion block that supports the pivot pin in a pivoting mode and that contacts each of the two metal members. A shoulder portion block includes: a body portion; a shoulder portion provided detachably in the body portion; and a drilled hole that extends through the body portion and the shoulder portion. In the case of performing rotation and friction welding using the intended rotary tool for an inner corner portion, first, a block of the shoulder portion is fitted into the inner corner portion formed by the two metal members connected together; then, the rotating pin is inserted into the drilled hole in a shoulder block; and then a shoulder portion block and the pivot pin are moved along a line of the inner corner portion while rotating and pressing the pivot pin against the inner corner portion.
    [0004] Patent Literature 2 describes: arranging a wire along an inner corner portion that is formed by two metal members connected together; and stirring the base material of the inner corner portion and the wire together using a rotating pin to which the shoulder portion is attached, thereby performing rotation and friction welding on the inner corner portion. In the inner corner portion on which rotation and friction welding is carried out, the frame is formed by the wire that is stirred by friction together with the base material of the inner corner portion. Citation List Patent Literature
    [0005] PTL 1: Publication of Japanese Patent Application Open to Public Inspection No. 2011-79031 PTL 2: Publication of Japanese Patent Application Open to Public Inspection No. 2013-166159 Summary of the Invention Technical problem
    [0006] As described in Patent Literature 1 and Patent Literature 2, when performing welding by rotation and friction in an inner corner portion that is formed by two metal members connected together, if the shoulder portion ( or a shoulder portion block) does not rotate, the heat provided in the target joining portion is less than that in a case where the shoulder portion rotates together with the rotating pin. Thus, particularly in a case where the wire is rubbed together with the base material of the target joining portion, an insufficient softening of the base material of the inner portion and corner and the wire can be caused by virtue of said insufficient heat input. In this case, defects can occur on the surface of the inner corner portion on which rotation and friction welding has been carried out since the base material of the inner corner portion and the wire have not been agitated enough.
    [0007] The present invention was produced in view of the above conventional problems. An object of the present invention is: to provide a rotary and friction welding apparatus capable of performing rotary and friction welding in an inner corner portion which is formed by two metal members connected together; and, in a method of fabricating a metal structure using the rotary and friction welding apparatus, feed a wire to the target joining portion (the inner corner portion) in such a way that the base material of the portion bonding target and the wire are frictionally agitated favorably. Solution to the Problem
    [0008] A rotation and friction welding apparatus according to the present invention is a rotation and friction welding apparatus for performing rotation and friction welding on an inner corner portion which is formed by two metal members connected between itself. The rotary and friction welding apparatus includes: a rotary tool provided with a rotating pin at its distal end; the shoulder portion into which the rotating tool is inserted, the shoulder portion coming into contact with the two metal members; a rotary drive unit that causes the rotary tool to rotate on an axis; a pressure device that presses the rotary tool and the shoulder portion against the inner corner portion; a mobile device that moves the rotary tool and the shoulder portion in a forward direction along the inner corner portion; and a wire heating device that heats a wire that is frictionally agitated together with the two metal members by the rotating pin.
    [0009] According to the rotation and friction welding apparatus with the configuration described above, the preheated wire is rubbed together with the base material of the target joining portion. This makes it possible to avoid insufficient softening of the base material of the target joining portion and the thread due to insufficient heat input into the base material of the target joining portion and the thread. Once the base material of the target bonding portion and the thread are softened enough, the base material of the target bonding portion and the thread can be frictionally agitated favorably. In addition, since the wire is preheated, the necessary heat input for the softening of the wire is reduced, which makes it possible to increase the joining speed.
    [00010] Preferably, the rotation and friction welding apparatus described above additionally includes a wire feeding device which feeds the wire to the target joining portion of the two metal members. Preferably, the wire heating device is configured to heat the wire that is fed to the target joining portion by the wire feeding device. Said configuration makes it possible to continuously feed the heated wire to a target joining portion.
    [00011] It should be noted that the wire heating device can be configured to heat the wire by applying an electric current to the wire. Alternatively, the wire heating device can be configured to heat the wire by electromagnetic induction. Additionally, alternatively, the wire heating device can be configured to heat the wire by a heating element.
    [00012] In the rotation and friction welding apparatus described above, the shoulder portion may include: an insertion hole into which the rotary tool is inserted; the two surfaces of the shoulder portion which are provided on both sides, respectively, of an opening of the insertion hole in a direction substantially perpendicular to the direction of advance, the two surfaces of the shoulder portion forming an angle corresponding to an angle, formed by the two metal members, from the inner corner portion; and a guide groove intended for the wire, the guide groove that extends parallel to the forward direction and being formed in a front rib portion where the two surfaces of the shoulder portion meet, the front rib portion being positioned in front of from the opening of the insertion hole in the forward direction.
    [00013] According to the configuration described above, the wire is fed to the target joining portion at the same time that it is being guided by the guide groove, and thus the wire is prevented from moving away from the target portion union or bending. In this way, the wire is fed steadily to the target portion of the joint.
    [00014] In the rotation and friction welding apparatus described above, preferably the front rib portion is more slit from the inner corner portion than the rear rib portion where the two surfaces of the shoulder portion meet, the rear rib portion being positioned behind from the insertion hole opening in the forward direction, and a cross section shape of the rear rib portion in the forward direction corresponds to the cross section shape of the inner corner portion in the forward direction after welding by rotation and friction is carried out in the inner corner portion. According to said configuration, the yarn is fed to the target joining portion in such a way that the yarn feeding is not impeded by the shoulder portion or the base material. The rear rib portion comes into contact with the base material after the base material is stirred, and thereby the shape of the surface of the base material that has been stirred is cut.
    [00015] In the above described rotation and friction welding apparatus, the front rib portion is desirably inclined away from the inner corner portion in the forward direction. Here, desirably, the size of the front rib portion in the direction of the depth of the guide groove from one end to the other end of the front rib portion in the direction of advance is greater than the depth of the guide groove. Said configuration makes it possible to prevent the thread from being caught in the shoulder portion.
    [00016] The rotation and friction welding apparatus described above may additionally include the base to which the shoulder portion is detachably mounted, the base which includes an orifice that is continuous with the insertion orifice of the shoulder portion. According to said configuration, the shoulder portion, which degrades relatively easily, can be independently detached from the base for replacement.
    [00017] A method of fabricating a metal structure according to the present invention includes: joining a first metal member and a second metal member together in an L-shape or a T-shape; heat the wire; feeding the heated wire to an inner corner portion which is formed by a first metal member and a second metal member connected together; and pressurize a rotating pin that is rotating inside the inner corner portion to join a first metal member, a second metal member, and the wires together by friction and rotation welding.
    [00018] According to the method described above for fabricating a metal structure, the preheated wire is rubbed together with the base material of the target bonding portion. This makes it possible to avoid insufficient softening of the base material of the target joining portion and the thread due to insufficient heat input into the base material of the target joining portion and the thread. Once the base material of the target bonding portion and the thread are softened enough, the base material of the target bonding portion and the thread can be agitated by friction favorably. As a result, defects can be prevented from occurring on the surface of a rotating and friction weld of the metal structure. In addition, once the wire is preheated, the necessary heat input for the softening of the wire is reduced, which makes it possible to increase the joining speed.
    [00019] In heating the wire, for example, the wire can be heated by applying an electric current to the wire, or the wire can be heated by electromagnetic induction, or the wire can be heated by a heating element.
    [00020] In the above-described method of fabricating a metal structure, for example, a first metal member can be produced from an aluminum alloy of the A2000 series; a second metal member can be produced from an aluminum alloy of the A7000 series; and the wire can be produced from an aluminum alloy of the A2000 series or an aluminum alloy of the A7000 series. Advantageous effects of the invention
    [00021] According to the present invention, once the preheated wire is fed to the target bonding portion, the base material of the target bonding portion and the wire can be suitably softened by the entry of heat into the target bonding portion. union by the rotating pin. As a result, the base material of the target joining portion and the yarn are frictionally agitated favorably. Brief Description of Drawings
    [00022] Figure 1 shows a state where an inner corner portion that is formed by two metal members connected together is being agitated by a rotating tool.
    [00023] Figure 2 shows a schematic configuration of a rotary and friction welding apparatus according to an embodiment of the present invention.
    [00024] Figure 3 is a sectional view of a block of the shoulder portion in a forward direction.
    [00025] Figure 4 shows the shoulder portion seen in the direction perpendicular to the forward direction.
    [00026] Figure 5 is a view seen in the direction of an arrow V in figure 4.
    [00027] Figure 6 is a view seen in the direction of an arrow VI in figure 4.
    [00028] Figure 7 is a view seen in the direction of an arrow VII in figure 4.
    [00029] Figure 8 illustrates the shoulder portion seen in the forward direction, which shows a variation of the guide groove of the shoulder portion.
    [00030] Figure 9 is a flow chart that shows a method of fabricating a metal structure when using the rotary and friction welding apparatus.
    [00031] Figure 10 shows the schematic configuration of the rotation and friction welding apparatus that includes a wire heating device according to a variation. Description of Modalities
    [00032] Hereinafter, a rotary and friction welding apparatus 1 and a method of fabricating a metal structure according to an embodiment of the present invention are described with reference to the drawings. Figure 1 shows a state where an inner corner portion 90, which is formed by two metal members 91 and 92 connected together, is being agitated by a rotary tool 2. As shown in figure 1, the rotary welding apparatus and friction 1 according to the present modality is an apparatus that performs welding by rotation and friction in the inner corner portion 90, which is formed by a first member 91 and a second member 92 connected together in an L or T shape . By using the rotation and friction welding apparatus 1, the metal structure which includes a first member 91 and a second member 92 joined together by rotation and friction welding can be manufactured.
    [00033] A first member 91 and a second member 92, which are target members, can be produced from the same metal material or can be produced from different metal materials from one another, provided that a first member 91 and a second member 92 is produced from metal materials that can be joined together by rotation and friction welding. In a case where a first member 91 and a second member 92 are produced from different metal materials from one another, a first member 91 can be produced from an A2000 series aluminum alloy, and a second member 92 can be produced of an aluminum alloy of the A7000 series, for example. In that case, desirably, a wire 50 to be agitated by friction together with the target members 91 and 92 is produced from an aluminum alloy of the A2000 series or the aluminum alloy of the A7000 series.
    [00034] The A2000 series aluminum alloy is an alloy based on copper and aluminum containing 3.5% or more of copper. The aluminum alloy of the A7000 series is an aluminum-zinc-magnesium-copper based alloy. The A7000 series aluminum alloy has significantly greater tensile strength and hardness than the A2000 series aluminum alloy. However, the aluminum alloy of the A7000 series is inferior to the aluminum alloy of the A2000 series in terms of fatigue strength and robustness against fracture. Thus, in order to improve the fatigue strength and robustness against fracture of the structure, there is a case where an aluminum alloy of the A2000 series is arranged on the external lateral surface of the structure, and the aluminum alloy of the A7000 series is combined, as an internal reinforcement member, with the aluminum alloy of the A2000 series to form a T shape. By joining the produced member of an aluminum alloy of the A2000 series and the produced member of an aluminum alloy of the A7000 series together by welding rotation and friction using the rotation and friction welding apparatus 1 according to the present embodiment, said members can be directly joined together without connecting members such as rivets between them. This makes it possible to improve fatigue strength and robustness against fracture and reduce cost and weight.
    [00035] Next, the configuration of the rotary and friction welding apparatus 1 is described in detail. Figure 2 shows the schematic configuration of the rotary and friction welding apparatus 1 according to the embodiment of the present invention. Figure 2 shows a sectional view of a shoulder portion block 3 in the direction perpendicular to a forward direction 100. Figure 3 is a sectional view of a shoulder portion block 3 in the forward direction. In figure 3, the rotary tool 2 is indicated by two dotted chain lines.
    [00036] As shown in figure 2 and figure 3, the rotary and friction welding apparatus 1 according to the present embodiment, shown schematically, includes: the rotary tool 2, which is provided with a rotating pin 21 in the its distal end; a shoulder portion block 3, which is attached to the rotary tool 2; the rotary drive unit 41, which drives the rotary tool 2 to rotate; a pressure device 42, which presses the rotary tool 2 so that the pivot pin 21 is pushed into the base material of the target joining portion with a predetermined pushing force; a mobile device 43 of the rotary tool 2; a wire feeding device 44; a wire heating device 45; and a controller 46, which controls the operation of the rotation and friction welding apparatus 1. The target members 91 and 92 are maintained, for example, by the template 95 shown in figure 1 so that the target members 91 and 92 can receive the pressure force from the rotary tool 2.
    [00037] The mobile device 43 is a means for moving the rotary tool 2 and a block of the shoulder portion 3 with respect to a first member 91 and a second member 92 along a junction line of the inner corner portion 90, the junction line being formed by a first member 91 and a second member 92 connected together. In the description here, the direction in which the rotary tool 2 and a shoulder portion block 3 moves is referred to as the "forward direction 100", and the forward direction 100 is defined as the direction that extends along the junction line of the inner corner portion 90. From the forward direction 100, the direction extending from the rotary tool 2 and a block of the shoulder portion 3 and in which the rotary tool 2 and a block of the shoulder portion 3 if it moves during machining it is referred to as "forward" (in figure 2, the direction indicated by an arrow 100). Also, from the forward direction 100, the direction extending from the rotary tool 2 and a block of the shoulder portion 3 in the reverse direction to the forward direction is referred to as "backward". It should be noted that the rotary tool 2 and a shoulder portion block 3 advance in such a way that the direction of rotation of the rotary tool 2 and the feed direction 100 coincide with each other, and the rotary tool 2 and a block of the shoulder portion 3 withdraw in such a way that the direction of rotation of the rotary tool 2 and the direction of advance 100 are opposite each other.
    [00038] As an example, the mobile device 43 can consist of a linear guide mechanism and a driver for the linear guide mechanism, the driver being controlled by controller 46 (both the linear guide mechanism and the driver are not shown). It should be noted that the mobile device 43 can be a robot. The mobile device 43 according to the present embodiment is configured to move the rotary tool 2 with respect to the target members 91 and 92 maintained by the template 95. However, as an alternative, the mobile device 43 can be configured to move the template 95 that holds the target members 91 and 92 with respect to the rotary tool 2.
    [00039] The wire feeding device 44 is a means for feeding the wire 50 to the target portion of the joint according to the joining speed. As an example, the wire feed device 44 consists of a servomotor controlled by controller 46 and the feed roller driven by the servomotor (both the servomotor and a feed roller are not shown). In the present embodiment, the yarn 50 to be fed by the yarn feeding device 44 to the target joining portion is wound around a yarn spool 47 in a manner such as a bobbin. However, as an alternative, the wire 50 to be fed can be cut in advance according to the length of the junction line of the inner corner portion 90.
    [00040] The wire heating device 45 is a means for heating the wire 50, which is rubbed together with the target members 91 and 92. The wire 50, which is fed to the target portion of the members connection target 91 and 92, is preheated by the wire heating device 45. The wire heating device 45 according to the present embodiment is configured to heat the wire 50, which is fed to the target target portion by the connection device wire feed 44. As an example, the wire heating device 45 consists of a contact tip 45a and a wire heating power supply 45b. The wire heating power supply 45b provides an electrical current for the contact tip 45a and the base material. The operation of the wire heating power supply 45b is controlled by the controller 46. In the wire heating device 45, electrical current is supplied from the contact tip 45a to the wire 50 which has been guided to the contact tip 45a. By supplying electrical current to wire 50 in this way, wire 50 is heated due to the resistance of wire 50.
    [00041] The wire feeding device 44 and the contact tip 45a of the wire heating device 45 are mounted to a support 33 fixed to a shoulder portion block 3, and moves together with a shoulder portion block 3 in the forward direction 100 with respect to the joining members 91 and 92. Thus, desirably, the wire feed device 44 and the contact tip 45a of the wire heating device 45 are always positioned in the vicinity of a block of the shoulder portion 3 and the rotary tool 2 to steadily feed the high temperature wire 50 to the target joining portion. However, at least one of the wire feeding device 44 and the wire heating device 45 can be provided independently of a shoulder portion block 3 and the rotary tool 2 in the offset position from a shoulder portion block. shoulder 3 and the rotary tool 2.
    [00042] Hereinafter, a block of the shoulder portion 3 is described in detail. As shown in figures 1 to 3, a shoulder portion block 3 consists of a shoulder portion 8 and a base 7, to which the shoulder portion 8 is detachably mounted. In this way, a block of the shoulder portion 3 is made up of the separate protections that are the base 7 and the shoulder portion 8. Therefore, the shoulder portion 8, which degrades relatively easily, can be independently detached from the base. 7 for replacement. A cooling orifice for cooling the rotary tool 2, and a cooling medium passage through which a cooling medium flows, are formed in a block of the shoulder portion 3 although they are not shown in the drawings.
    [00043] Base 7 is a hexagonal cylindrical body portion. When the base 7 is seen in the forward direction 100, the external shape of the base 7 is such that two adjacent corners are cut apart from a rectangle. The surfaces formed as a result of the cut away from the two adjacent corners from the rectangle are guide surfaces 72. It should be noted that when a block of the shoulder portion 3 is pushed into the inner corner portion 90 by the pressure device 42, the surfaces of the shoulder portion 85 described below come into contact with the target members 91 and 92, but the guide surfaces 72 are slightly apart from the target members 91 and 92 in a way to face the members connection target 91 and 92. An angle formed by the two guide surfaces 72 is adjusted according to an angle, formed by the target target members 91 and 92, of the inner corner portion 90. In the present embodiment, the angle formed by the two surfaces guides 72 is about 90 °.
    [00044] The surface positioned between the two guide surfaces 72 is the mounting surface 71, to which the shoulder portion 8 is mounted. The mounting surface 71 is provided with the recess 73, in which the shoulder portion 8 is fitted. In the recess 73, a perforated hole 74 and the plurality of mounting holes 75 (Figure 2) are opened. The mounting holes 75 are holes into which the screws for securing the shoulder portion 8 to the recess 73 are inserted. A screw thread is formed on the inner surface of each mounting hole 75.
    [00045] Figure 4 shows the shoulder portion 8 seen in the direction perpendicular to the forward direction 100. Figure 5 is a view seen in the direction of an arrow V in figure 4. Figure 6 is a view seen in the direction of a arrow VI of figure 4. Figure 7 is a view seen in the direction of an arrow VII of figure 4. As shown in figures 4 to 7, the shoulder portion 8 includes a base plate 81 and a protruding portion 82, which are fully formed. The base plate 81 is fitted into the recess 73 of the base 7, and the projecting portion 82 protrudes from the base plate 81 towards the inner corner portion 90.
    [00046] The base plate 81 is provided with mounting holes 83 that correspond to the mounting holes 75 of the base 7. In a state where the base plate 81 of the shoulder portion 8 is fitted into the recess 73 of the base 7, the mounting holes 75 of the base 7 and mounting holes 83 of the shoulder portion 8 form continuous screw holes. By inserting the screws into the screw holes, the shoulder portion 8 is attached to the base 7.
    [00047] A perforated hole 84 is opened at the distal end of the protruding portion 82. The perforated hole 84 extends through the base plate 81 and the protruding portion 82. In a state where the shoulder portion 8 is mounted on the base 7, the perforated hole 74 of the base 7 and the perforated hole 84 of the shoulder portion 8 form a single continuous insertion hole 31.
    [00048] The projecting portion 82 is provided with the surfaces of the shoulder portion 85, which are formed on both sides, respectively, of the opening of the drilled hole 84 in the direction substantially perpendicular to the direction of advance 100. An angle formed by the two surfaces of the shoulder portion 85 is adjusted according to the angle of the inner corner portion 90, which is formed by the joining target members 91 and 92. In the present embodiment, the angle formed by the two surfaces of the shoulder portion 85 is about 90 °. When a block of the shoulder portion 3 is pushed against the inner corner portion 90, the surfaces of the shoulder portion 85 come into contact with the target joining members 91 and 92 forming the inner corner portion 90.
    [00049] The rib portions 86 and 88 are formed in the projecting portion 82 at the positions where the two surfaces of the shoulder portion 85 meet. The direction in which the rib portions 86 and 88 extend is parallel to the direction in which the inner corner portion 90 extends. The rib portions are separated as front and rear rib portions, with the drilled hole 84 between them, that is, as the rib portion positioned forward from the drilled hole 84 in the forward direction 100 (hereinafter, "front rib portion 86") and the rib portion positioned behind from the drilled hole 84 in the forward direction 100 (hereinafter, "rear rib portion 88").
    [00050] The guide groove 87, which guides the thread 50, is formed in the front rib portion 86. The guide groove 87 extends substantially parallel to the forward direction 100. The cross-sectional shape of the guide groove 87 according to the present modality in the forward direction 100 is a semi-spherical format. However, the cross-sectional shape of the guide groove 87 in the forward direction 100 is not limited to a semi-spherical shape. For example, as shown in figure 8, the cross-sectional shape of the guide groove 87 in the forward direction 100 can be a polygonal shape.
    [00051] Conventionally, in the case of friction-agitation of the base material of an inner corner portion together with a thread, the thread is arranged along the inner corner portion before carrying out the stirring friction as described in the Literature of Patent 2. It may be the case where said wire is not stably fed to the target joining portion by the fact that the base material of the inner corner portion moves as a result of the receiving force during friction, agitation or by the fact that the wire comes in contact with an adjacent member, such as the shoulder portion, and becomes stuck. In this regard, in the rotation and friction welding apparatus 1 according to the present embodiment, since the shoulder portion 8 includes the guide groove 87 to guide the wire 50, even when the wire 50 has been softened to a certain degree by virtue of heating, the wire 50 is guided along the guide groove 87 and thereby prevented from moving away or jamming in the horizontal or vertical direction. In this way, the wire 50 is fed stably to the target joining portion.
    [00052] The front rib portion 86 is angled away from the inner corner portion 90 in the forward direction 100. The inclination of the front rib portion 86 extends from the rear end to the front end of the portion front rib 86 in the direction of advance 100. Although the inclination of the front rib portion 86 is smooth in the vicinity of the drilled hole 84, the inclination gradually increases as the distance from the drilled hole 84 increases. It should be noted that the front rib portion 86 can be formed either as an incline or as a curved surface. Thus, since the front rib portion 86 is inclined, movement of the shoulder portion 8 in the forward direction 100 is less likely to be impeded by the inner corner portion 90.
    [00053] Desirably, the size Di of the front rib portion 86 in the direction of the depth of the guide groove 87 from the rear end to the front end of the front rib portion 86 in the forward direction 100 is greater than the depth D2 of the guide groove 87 (Figure 4). In other words, it is desirable that the position, in the direction of the depth of the guide groove 87, of the rear end of the front rib portion 86 in the direction of advance 100 is spaced away from the position, in the direction of the depth of the guide groove 87, from the front end of the front rib portion 86 in the forward direction 100 by the distance that is greater than the depth D2 of the guide groove 87. As a result, ahead from the front end of the guide groove 87 in the forward direction 100, the inclined front rib portion 86 (in particular, the portion indicated by an arrow 86a in figure 5) exists. Thus, although the wire 50 is passing forward from the guide groove 87 in the forward direction 100, the wire 50 contacts the inclined front rib portion 86. This makes it possible to prevent the wire 50 from being caught in the shoulder portion 8, thereby avoiding the impediment to the feeding of the thread 50.
    [00054] The rear rib portion 88 has the function of coming into contact with the base material after the base material is stirred, thereby forming the shape of the inner corner portion 90 (for example, a curved shape) after the rotational and friction welding is carried out on it. In this way, the cross-sectional shape of the rear rib portion 88 in the feed direction 100 corresponds to the cross-sectional shape of the inner corner portion 90 in the feed direction 100 after rotation and friction welding is performed on the feed portion. inner corner 90. In the present embodiment, the cross-sectional shape of the rear rib portion 88 in the forward direction 100 is a smooth ridge shape, so that a smooth curve that connects a first member 91 and a second member 92 it is formed in the inner corner portion 90 after rotation and friction welding is performed thereon.
    [00055] The front rib portion 86 is more slit from the inner corner portion 90 than the rear rib portion 88. The front rib portion 86 is spaced from the inner corner portion 90 so that the portion inner corner portion 90 and the front rib portion 86 will not come into contact with each other and the thread 50 can be fed between the inner corner portion 90 and the guide groove 87. On the other hand, the rear rib portion 88 is relatively or sparsely spaced from the inner corner portion 90 so that the rear rib portion 88 will come into contact with the inner corner portion 90 after the inner corner portion 90 is agitated. Thus, since the front rib portion 86 is more slit from the inner corner portion 90 than the rear rib portion 88, the wire 50 fed to the target joining portion is prevented from coming into contact with the portion front rib 86 during thread feeding 50.
    [00056] The base 7 and the shoulder portion 8 with the configurations described above are integrated together to form a block of the shoulder portion 3 as follows: the base plate 81 of the shoulder portion 8 is fitted into the recess 73 of the base 7; and the screws are screwed into the mounting holes 83 and the mounting holes 75, which coincide with each other in the axial direction. In a shoulder portion block 3, the perforated hole 84 of the shoulder portion 8 and the perforated hole 74 of the base 7 communicates with each other to form an insertion hole 31. The insertion hole 31 includes: a portion of larger diameter 31a which includes an inlet portion on the base side 7; a smaller diameter portion 31c that includes an outlet portion on the shoulder portion 8 side; and an inclined portion 31b that smoothly connects the larger diameter portion 31a and the smaller diameter portion 31c. The diameter of the smaller diameter portion 31 c is relatively larger than the diameter of the distal end of the rotating pin 21. The inclination of the inclined portion 31b with respect to the axial direction coincides with the inclination of the inclined portion formed on the rotating pin 21 of the rotary tool 2. When the rotary tool 2 is inserted into the insertion hole 31 of a shoulder portion block 3, the angled portion 3 lb of the insertion hole 31 and the inclined portion of the rotating pin come into contact with each other, and from there so a block of the shoulder portion 3 and the rotary tool 2 are positioned with respect to each other. When the rotary tool 2 and a shoulder portion block 3 are thus positioned, the rotating pin 21 at the distal end of the rotary tool 2 is in a state of protruding from a shoulder portion block 3 by a predetermined length. It should be noted that a cylindrical collar 48 is provided between the larger diameter portion 31a of a shoulder portion block 3 and the rotary tool 2. Collar 48 is a member provided to allow the rotary tool 2 to rotate stably with with respect to a block of the shoulder portion 3.
    [00057] Hereinafter, a method of fabricating a metal structure using the rotary and friction welding apparatus 1 with the above configuration is described. Figure 9 is a flow chart that shows the method of fabricating a metal structure when using the rotary and friction welding apparatus.
    [00058] As shown in figure 9, first, a first member 91 and a second member 92 are connected together in an L shape as shown in figure 1 or in a T shape, and the first and second members 91 and 92 are maintained by template 95, which serves as a support member (step SI). A first member 91 and a second member 92 connected together form the inner corner portion 90, which is the target joining portion.
    [00059] Next, a block of the shoulder portion 3 is disposed in the inner corner portion 90 (step S2). In said step, a shoulder portion block 3 is arranged in the inner corner portion 90 so that the shoulder portion surfaces 85 of a shoulder portion block 3 come into contact with the first and second members 91 and 92 When a shoulder portion block 3 is disposed in the inner corner portion 90 in this way, the front rib portion 86 and the rear rib portion 88 of the shoulder portion 8 are arranged along the corner portion junction line. internal 90 in a way to face the junction line.
    [00060] Then, the rotating pin 21 of the rotary tool 2 is inserted into the insertion hole 31 of a block of the shoulder portion 3 (step S3). In said step, the pivot pin 21 is inserted into the insertion hole 31 until the distal end of the pivot pin 21 comes into contact with the inner corner portion 90. Then, until the angled portion of the pivot pin 21 comes into contact with the angled portion 31b of a shoulder portion block 3, the distal end of the pivot pin 21 is pushed into the base material of the target joining portion while rotating the pivot pin 21. As a result, the distal end of the pivot pin 21 is snapped into the base material of the target joining portion. It should be noted that, in order to reduce the resistance when the pivot pin 21 is snapped into the base material of the target joining portion, a prepared hole can be formed in advance in the inner corner portion 90.
    [00061] Then, the pivot pin 21 and a block of the shoulder portion 3 are moved forward in the forward direction 100 along the junction line of the inner corner portion 90 while rotating the pivot pin 21 evenly. friction and agitation of the target joining portion and the wire 50 (step S5). At the same time or before, the yarn 50 is fed by the yarn feeding device 44 to the target joining portion according to the speed of movement of the rotating pin 21 and a block of the shoulder portion 3 (i.e., of according to the joining speed). At the same time as the wire 50 is fed to the target bonding portion, it is heated by the wire heating device 45. That is, the preheated wire 50 is fed to the target bonding portion (step S4).
    [00062] The pivot pin 21 provides frictional heat to the base material of the target joining portion (i.e., a first member 91 and a second member 92) and the wire 50 that has been fed to the target joining portion. The base material of the target joining portion and the wire 50 are softened by heating and frictional rotation, and thus a flow of plastic is caused. As a result of the pivot pin 21 making the relative movement in the forward direction 100, lamination is caused in sequence at the inner corner portion 90, and thus the solid phase union of the inner corner portion 90, that is, the solid phase union of the first member 91 and the second member 92 is performed.
    [00063] Through the steps described above, the metal structure formed by joining a first member 91 and a second member 92 together by welding by rotation and friction is carried out. In the method and fabrication described above, the yarn to be shaken together with the base material of the target joining portion is heated in advance. This makes it possible to avoid insufficient softening of the base material of the target joint portion and the wire 50 due to insufficient heat input into the base material of the target joint portion and the wire 50. Thus, once the wire 50 is fed to the target joining portion in such a way that the base material of the target joining portion and the wire 50 are agitated favorably, defects can be prevented from occurring on the surface of a joint of the metal structure, which is formed by the union by welding by rotation and friction. That is, the state of union in the rotation and friction weld and its bond strength can be made stable. In addition, since the wire 50 is preheated, the necessary heat input for the softening of the wire 50 is reduced, which makes it possible to increase the joining speed.
    [00064] Although the preferred embodiment of the present invention has been described above, the configuration of the rotary and friction welding apparatus 1 can be modified, for example, as described below.
    [00065] For example, the wire heating device 45 of the rotation and friction welding apparatus 1 according to the above described mode is configured to heat the wire 50 by applying an electric current to the wire 50. However, the way of heating by the wire heating device 45 is not limited to said example. As an example alternative, the wire heating device 45 can be configured to heat the wire 50 by using electromagnetic induction or a heating element.
    [00066] Figure 10 shows the schematic configuration of the rotation and friction welding apparatus 1 that includes the wire heating device 45 according to Variation 1. As shown in figure 10, the wire heating device 45 is, for example, consisting of: a heater 61 that includes a coil; a temperature sensor 62, which detects the temperature of the wire 50 heated by the heater 61; and a temperature controller 63. Temperature controller 63 is configured to adjust an electrical current applied to the heater coil 61 based on the temperature of the wire 50, which is detected by the temperature sensor 62. When the electrical current flows to the heater coil 61, a line of magnetic force whose direction and magnitude varies is generated around the coil. The magnetic force line causes an eddy current to flow through the wire 50. When the current flows through the wire 50, heat is generated due to the resistance of the wire 50, and thus the wire 50 generates heat from itself own. In this way, wire 50 is heated by electromagnetic induction. It should be noted that the heater above 61 may include a coil that serves as a heating element. In that case, when an electric current flows to the coil of the heater 61, the heater 61 generates heat. The yarn 50 is heated by the heat generated.
    [00067] Additionally, for example, the rotary and friction welding apparatus 1 according to the above-described embodiment includes the wire feeding device 44, and actively feeds the wire 50 to the target joining portion. Said configuration makes it possible to continuously feed the heated wire to the target joining portion. However, it is not essential for the rotary and friction welding apparatus 1 to include the wire feeding device 44. In this case, the wire 50 is fed to the target joining portion in a way to flow the movement of the rotary tool 2 and a block of the shoulder portion 3 in the forward direction 100.
    [00068] Reference signal list 1 rotary and friction welding apparatus 2 rotary tool 21 rotating pin 22 shoulder portion block 31 insertion hole 32 base 71 mounting surface 72 guide surface 73 recess 74 perforated hole 75 mounting hole 76 shoulder portion 81 base plate 82 protruding portion 83 mounting hole 84 perforated hole 85 shoulder portion surface 86 front rib portion 87 guide groove 88 rear rib portion 89 rotation drive unit 90 pressure device 91 mobile device 92 wire feeding device 93 wire heating device 94 controller 95 wire 96 inner corner portion 97 first member 98 second member
    权利要求:
    Claims (11)
    [0001]
    1. Rotation and friction welding apparatus (1) to perform rotation and friction welding on an inner corner portion (90) formed by two metal members (91, 92) connected together, the welding apparatus rotation and friction welding (1) comprising: a rotary tool (2) provided with a rotating pin (21) at its distal end; a shoulder portion (8) into which the rotary tool (2) is inserted, the shoulder portion (8) coming into contact with the two metal members (91, 92); a rotary drive unit (41) configured to cause the rotary tool (2) to rotate around an axis; a pressure device (42) configured to press the rotary tool (2) and the shoulder portion (8) against the inner corner portion (90); a mobile device (43) configured to move the rotating tool (2) and the shoulder portion (8) in a forward direction along the inner corner portion (90), where the forward direction is the direction extending along the connecting line of the inner corner portion (90); and a wire heating device (45) configured to heat a wire (50) which is frictionally stirred together with the two metal members (91, 92) by the rotating pin (21), and characterized by the fact that the portion shoulder (8) includes: an insertion hole (31) into which the rotary tool (2) is inserted; two surfaces of the shoulder portion (85,85) that are proportioned on both sides, respectively, of an opening of the insertion hole (31) in a direction substantially perpendicular to the forward direction, the two surfaces of the portion of the shoulder (85.85) forming an angle that corresponds to an angle, formed by the two metal members (91, 92), of the inner corner portion (90); and a guide groove (87) intended for the wire (50), the guide groove (87) extending parallel to the forward direction and being formed in a front rib portion (86) where the two surfaces of the shoulder portion (85 , 85) meet, so that, in use, the front rib portion (86) being positioned forward from the opening of the insertion hole (31) in the forward direction.
    [0002]
    2. Rotation and friction welding apparatus (1) according to claim 1, characterized by the fact that it additionally comprises a wire feeding device (44) that feeds the wire to the target joining portion of the two members of metal (91, 92), wherein the wire heating device (45) is configured to heat the wire (50) which is fed to the target joining portion by the wire feeding device (44).
    [0003]
    3. Rotation and friction welding apparatus (1), according to claim 1 or 2, characterized by the fact that the wire heating device (45) is configured to heat the wire (50) by applying an electric current to the wire (50).
    [0004]
    4. Rotation and friction welding apparatus (1) according to claim 1 or 2, characterized by the fact that the wire heating device (45) is configured to heat the wire (50) by electromagnetic induction.
    [0005]
    5. Rotation and friction welding apparatus (1) according to claim 1 or 2, characterized by the fact that the wire heating device (45) is configured to heat the wire (500 by a heating element).
    [0006]
    Rotation and friction welding apparatus (1) according to any one of claims 1 to 5, characterized in that the front rib portion (86) is more slit from the inner corner portion (90) than a rear rib portion (88) where the two surfaces of the shoulder portion (85.85) meet, the rear rib portion (88) being positioned rearwardly from the insertion hole opening (31) in the direction feed, and a cross section shape of the rear rib portion (88) in the feed direction corresponds to a cross section shape of the inner corner portion (90) in the feed direction after rotation and friction welding has been carried out in the inner corner portion (90).
    [0007]
    Rotation and friction welding apparatus (1) according to any one of claims 1 to 6, characterized in that the front rib portion (86) is angled away from the inner corner portion (90 ) forward in the forward direction.
    [0008]
    Rotation and friction welding apparatus (1) according to claim 7, characterized in that a size of the front rib portion (86) in the direction of the depth of the guide groove (87) from one end to the other end of the front rib portion (86) in the forward direction it is greater than a depth of the guide groove (87).
    [0009]
    Rotation and friction welding apparatus (1) according to any one of claims 1 to 8, characterized in that it additionally comprises a base (7) on which the shoulder portion (8) is detachably mounted , the base (7) including an orifice that is continuous with the insertion orifice (31) of the shoulder portion (8).
    [0010]
    10. Method of fabricating a metal structure, the method comprising the steps of: joining a first metal member (91) and a second metal member (92) together in an L-shape or a T-shape heating a wire (50); feeding the heated wire to an inner corner portion (90) that is formed by the first metal member (91) and the second metal member (92) connected together; and pressurize a rotating pin (21) that is rotating inside the inner corner portion (90) to join the first metal member (91), the second metal member (92), and the wire (50) together by rotation and friction welding, characterized by the fact that the method is carried out using a rotation and friction welding apparatus (1) as defined in any one of claims 1 to 9.
    [0011]
    11. Method of fabricating a metal structure according to claim 10, characterized by the fact that: the first metal member (91) is made of an aluminum alloy of the A2000 series; the second metal member (92) is made of an aluminum alloy of the A7000 series; and the wire is (50) produced from an aluminum alloy of the A2000 series or an aluminum alloy of the A7000 series.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112016009172B1|2021-02-09|rotary and friction welding apparatus and metal structure fabrication method
    TWI532555B|2016-05-11|Dynamic adjustment of friction stir welding process parameters based on weld temperature
    TWI540012B|2016-07-01|Friction stir welding with temperature control
    BRPI0814187B1|2016-12-06|friction welded joint of a plurality of overlapping plates
    JP2015190078A|2015-11-02|Fabric bonding device
    TW200821423A|2008-05-16|Warp knitting machine
    BR112012012017B1|2017-06-27|METHOD AND WELDING APPARATUS FOR TWO-SIDE SHAKING AND ATTRACTION, AND, TWO-SIDE SHAKING AND TWILIGHT ATTACHMENT TOOLS ASSEMBLY
    JP2005224837A|2005-08-25|Laser beam welding apparatus
    US20180250767A1|2018-09-06|Joining method, method of manufacturing liquid cooling jacket, and liquid cooling jacket
    CN205736047U|2016-11-30|A kind of 3D printing consumables fusion splicer
    US20130168363A1|2013-07-04|Wire electric discharge machine having dielectric heating tube
    JP4603608B2|2010-12-22|Grooving feeder for flux-cored yarn solder
    JP2016123984A|2016-07-11|Tool for friction stir and friction stir welding method using tool for friction stir
    JP6116528B2|2017-04-19|Material posture changing device, injection molding device using material posture changing device, and material supply method of injection molding device
    JP6057840B2|2017-01-11|Internal space forming method, internal space forming device, and heat transfer plate
    JP2006007327A|2006-01-12|Friction stirring and joining method, its joining device, and its friction joined body
    JPWO2021005690A1|2021-09-13|Additional manufacturing equipment
    CN110958926A|2020-04-03|Laminated molding method and laminated molding apparatus
    CN102810433B|2016-08-24|The manufacture method of cylindric electric current fuse
    JP6785369B2|2020-11-18|Caulking device
    JP2002292463A|2002-10-08|Brazing method and brazing device
    JP2011026742A|2011-02-10|Cord joint apparatus and method
    BR102017005638A2|2017-12-05|APPARATUS FOR ZYPER MANUFACTURE
    WO2020075813A1|2020-04-16|Friction stir welding device, method for operating same, and joint structure
    JP6806658B2|2021-01-06|Frame manufacturing method and frame manufacturing equipment
    同族专利:
    公开号 | 公开日
    EP3064306A4|2017-05-10|
    JP2015085382A|2015-05-07|
    EP3064306B1|2018-07-25|
    JP6224993B2|2017-11-01|
    US20160263696A1|2016-09-15|
    CA2926542A1|2015-05-07|
    EP3064306A1|2016-09-07|
    WO2015064012A1|2015-05-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JP2004042095A|2002-07-12|2004-02-12|Hitachi Industries Co Ltd|Apparatus and method for frictional stir welding|
    JP4861656B2|2005-08-12|2012-01-25|昭和電工株式会社|Friction stir welding method and hollow body manufacturing method|
    JP2007111716A|2005-10-19|2007-05-10|Showa Denko Kk|Clamping device, welding equipment and welding method|
    JP5304583B2|2009-10-09|2013-10-02|日本軽金属株式会社|Rotating tool for inner corner joining and inner corner joining method using the same|
    JP2013166159A|2012-02-14|2013-08-29|Mitsubishi Heavy Ind Ltd|Friction stir welding device|US9511446B2|2014-12-17|2016-12-06|Aeroprobe Corporation|In-situ interlocking of metals using additive friction stir processing|
    US9511445B2|2014-12-17|2016-12-06|Aeroprobe Corporation|Solid state joining using additive friction stir processing|
    US9266191B2|2013-12-18|2016-02-23|Aeroprobe Corporation|Fabrication of monolithic stiffening ribs on metallic sheets|
    DE102014115535B3|2014-10-24|2016-03-31|Universität Stuttgart|Friction friction welding tool and method for friction stir welding|
    JP6451940B2|2014-12-26|2019-01-16|株式会社Ihi|Friction stir tool and friction stir welding method using friction stir tool|
    JP2016128178A|2015-01-09|2016-07-14|株式会社Ihi|Friction agitation joining device|
    JP2016128177A|2015-01-09|2016-07-14|株式会社Ihi|Friction agitation joining device|
    KR20170129930A|2015-05-18|2017-11-27|가부시키가이샤 아이에이치아이|Friction stir welding device and friction stir welding method|
    DE102016003580B3|2016-03-23|2017-08-10|Grenzebach Maschinenbau Gmbh|Device and method for residue-free friction stir welding of workpieces caused by manufacturing tolerances height differences of the joining partners, as well as computer program for performing the method|
    CN106112254B|2016-08-16|2018-08-10|东晓|A kind of 3D printing device and method|
    CN106825906A|2017-02-23|2017-06-13|广东省焊接技术研究所（广东省中乌研究院）|One kind silk filling backfill formula friction stir spot welding method and instrument|
    CN107414283B|2017-08-31|2019-11-12|重庆理工大学|A kind of friction stir welding method of the automatic feeding for different metal materials docking|
    DE102018113680A1|2018-06-08|2019-12-12|Kuka Deutschland Gmbh|Headpiece, welding tool and welding process|
    CN108971741A|2018-08-29|2018-12-11|哈尔滨工业大学（威海）|A kind of static shaft shoulder agitation soldering method of T junction fillet weld|
    CN111331246A|2020-04-17|2020-06-26|哈尔滨万洲焊接技术有限公司|Method and device for friction stir welding of dissimilar metals|
    法律状态:
    2019-07-30| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-12-08| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-02-09| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 01/10/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2013-228635|2013-11-01|
    JP2013228635A|JP6224993B2|2013-11-01|2013-11-01|Friction stir welding equipment|
    PCT/JP2014/005023|WO2015064012A1|2013-11-01|2014-10-01|Friction stir welding device and method for manufacturing metal structure|
    [返回顶部]