JP2009178760A - Welding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a welding apparatus capable of reducing labors for works and shortening working times by reducing work processes. <P>SOLUTION: The welding apparatus includes a rotary member 2 having a projecting part 2c formed on a distal end thereof; a rotation mechanism 2 for rotating the rotary member 2; and a movement mechanism that relatively moves the rotary member 2 and metallic members P1, P2 along an abutting part PT such that the projecting part 2c passes through the abutting part PT where metallic members P1, P2 are mutually abutted. The welding apparatus performs a friction stirring welding by softening metallic members P1, P2 and unitizing them with friction generated by the insertion of the projection part 2c into the abutting part PT. The welding apparatus also includes a burr removing member 3 that can relatively move metallic members P1, P2 with the rotary member 2, and reduce burrs generated during bonding process for inserting the projecting part 2c into the abutting part PT. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a welding apparatus for welding metal plates by friction stir welding.

Conventionally, friction between the joints of a plurality of metal members, while rotating the protrusions of the rotating member, thereby generating frictional heat, softening the metal plate, and plastically flowing the metal members together. A joining method called stirring welding is known.
However, in this friction stir welding, when the softened metal is agitated by the rotating member, a part of the softened metal is pushed out as the rotating member rotates and moves, and this becomes a sharp burr. It remains along the part.

Since such burrs adversely affect the subsequent work, it is known, for example, in Patent Document 1 to perform a process of removing the burrs after joining the metal members.
JP 2005-109230 A

However, in the above-described conventional technology, two steps of a welding step and a burr removal step are required, and time and labor are required for the welding operation.
The present invention has been made paying attention to the conventional problems as described above, and an object of the present invention is to provide a welding apparatus capable of reducing work processes and saving work time and labor.

  In order to achieve the above-described object, the invention described in claim 1 includes a rotating member having a protrusion at the tip, a rotating mechanism that rotates the rotating member, and a contact portion that contacts the metal members. And a moving mechanism for moving the rotating member and the metal member relative to each other so that the protruding portion penetrates and moves along the abutting portion, and penetrates the abutting portion while rotating the protruding portion. A welding apparatus capable of performing friction stir welding that integrates the metal members by friction generated by the friction, and is capable of moving relative to the metal member together with the rotating member; and The welding apparatus is characterized by including a burr removing member formed so as to be able to remove a burr generated in a joining process of penetrating into the contact portion.

  The invention according to claim 2 is the welding apparatus according to claim 1, wherein the burr removing member is mounted on an outer periphery of the rotating member so as to be rotatable integrally with the rotating member, and the rotation is performed. The welding apparatus is provided with a cutting blade capable of cutting the burr during integral rotation with the member.

  The invention according to claim 3 is the welding apparatus according to claim 1, wherein the burr removing member is mounted on the outer periphery of the rotating member so as to be rotatable relative to the rotating member, and the burr removing is performed. There is provided a stopper portion that restricts the rotation of the member with the rotating member and maintains a constant posture with respect to the metal member, and the burr removing member relatively moves along the contact portion. And a cutting blade capable of cutting the burr.

  According to a fourth aspect of the present invention, in the welding apparatus according to the third aspect, the metal member to be joined has a bottomed cylindrical shape, and the contact portion has an arc shape along a cylindrical outer periphery. The burr removing member has an arc surface along the outer periphery of the bottomed cylindrical metal member, and is restricted from contacting the bottom surface of the metal member and being rotated around the rotating member. The welding device is characterized in that the stopper portion is integrally formed.

In the welding apparatus of the present invention, while rotating the rotating member, the protrusion of the rotating member penetrates into the joint portion of the metal member, thereby generating frictional heat, softening the metal member, and plastically flowing the metal member. Join them together.
At this time, a part of the softened metal is pushed out as the protruding part penetrates the joint part and is moved, and a burr is generated along the joint part. It is removed from the metal member by a deburring member that moves in the direction of relative movement with the member.
Thus, in the present invention, the burr removing member moves relative to the metal member together with the rotating member, and the burr that has just been generated is removed, so there is no need to perform a separate deburring operation, and the work time for the deburring process In addition, labor can be saved. Further, while the burrs have softening properties, they can be removed immediately, and a high excision performance can be obtained as compared with performing deburring in a separate process.

In the invention described in claim 2, the burr removing member rotates together with the rotating member, and the cutting blade provided on the burr removing member cuts the burr.
Thus, since the rotation of the burr removing member is made integrally with the rotating member, no dedicated rotational power is required for the burr removing member, the structure can be simplified, and the apparatus can be miniaturized. Cost reduction can be achieved.
In addition, since the burr removing member is mounted on the rotating member, the burr formed by being pushed out by the protrusion of the rotating member is cut off immediately after the generation, and the burr removing member is separated from the rotating member. Compared with the case where it provides, it can cut out more easily.

In the third aspect of the invention, when the burr removing member moves relative to the metal member together with the rotating member, the rotation of the rotating member with the rotating member is restricted by the stopper portion, and the metal member is kept in a certain posture. Move along the tangent. And the cutting blade provided in this burr | flash removal member cuts a burr | flash. Moreover, since the burr removing member is mounted on the rotating member and moves relative to the metal member together with the rotating member, the burr removing member can be moved by the power of a moving device that moves the rotating member, thereby simplifying the structure. Thus, it is possible to reduce the size of the apparatus and reduce the cost.
In addition, since the burr removing member is mounted on the rotating member, the burr formed by being pushed out by the protrusion of the rotating member is cut off immediately after the generation, and the burr removing member is separated from the rotating member. Compared with the case where it provides, it can cut out more easily.

In invention of Claim 4, the novel welding apparatus which welds a bottomed cylindrical metal member can be provided.
In addition, the burr removing member has a circular arc surface that abuts the outer periphery of the cylindrical metal member, and a stopper portion that abuts the bottom surface of the metal member and restricts the burr removing member from being rotated around the rotating member. Are formed integrally, so that when the rotational force of the rotating member is transmitted to the burr removing member mounted on the outer periphery of the rotating member, the outer peripheral surface of the metal member contacts the arc surface, and the metal The burr removal member is restricted from rotating with respect to the metal member by the contact between the bottom surface of the member and the stopper portion.
As described above, the rotation of the burr removing member is restricted by the stopper portion formed integrally with the burr removing member, and the rotation can be prevented with an inexpensive and simple configuration.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the welding apparatus of this embodiment, the rotating member (2) provided with the protrusion (2c) at the tip, the rotating mechanism for rotating the rotating member (2), and the metal members (P1, P2) are brought into contact with each other. The protrusion (2c) is inserted into the contact portion (PT) that has been moved, and the rotating member (2) and the metal members (P1, P2) are moved along the contact portion (PT). A friction mechanism that integrates the metal members (P1, P2) by friction generated by penetrating the abutting portion (PT) while rotating the protruding portion (2c). A welding apparatus capable of performing welding, which is movable relative to the metal members (P1, P2) together with the rotating member (2), and the protrusion (2c) is moved to the contact portion ( In the joining process to penetrate PT) It is welding device according to claim that that has removably formed deburring member (3) burrs.

  Below, based on FIGS. 1-6, the welding apparatus A of Example 1 of the best embodiment of this invention is demonstrated.

First, the configuration will be described.
The welding apparatus A of the first embodiment is used to join two plate-like metal members P1 and P2 formed of metal such as aluminum shown in FIG. And a burr removing member 3.

Although not shown in detail, the apparatus main body 1 includes a drive unit 1a that supports the rotating member 2 and a support unit 1b that supports the metal members P1 and P2.
The drive unit 1a has a rotation drive mechanism that rotates the rotation member 2 around the rotation center shaft 2a (see FIG. 2) and a rotation member 2 that moves in the axial direction that is a direction along the rotation center shaft 2a. An advancing / retreating driving mechanism.

  The support portion 1b is provided with a holding mechanism (not shown) that holds the metal members P1 and P2 in a state where the end portions abut each other and are in contact with each other as shown.

  Further, the apparatus main body 1 has a slide mechanism for moving the rotating member 2 in the horizontal direction along the contact portion PT where the end portions of the metal members P1 and P2 are abutted with each other and are in contact with each other as illustrated. It has. Since this sliding mechanism should just slide the rotation member 2 and the metal members P1 and P2 in the horizontal direction relatively, if it is provided in either one or both of the drive part 1a and the support part 1b, In the first embodiment, it is assumed that the support portion 1b is provided with a slide mechanism for moving the metal members P1 and P2 in the horizontal direction.

The rotating member 2 is formed in a columnar shape, and includes a protrusion 2c disposed on the rotation center shaft 2a and projecting downward in a substantially conical shape on the lower end surface 2b.
As shown in FIG. 2, a supporting recess 2d having a reduced diameter in the inner diameter direction and a recessed outer peripheral surface is formed in the lower portion of the rotating member 2.
In the first embodiment, as illustrated in FIG. 3, the rotating member 2 includes a protruding member 2 c and a distal end member 21 including a small diameter portion 21 a that forms a supporting recess 2 d, and a small diameter of the distal end member 21. The main body 22 is provided with an insertion hole 22a into which the portion 21a is inserted and fixed.
Furthermore, in the tip member 21, engagement grooves 21c are formed along the axial direction at three locations on the outer periphery of the tip large diameter portion 21b having a larger diameter than the small diameter portion 21a.

The burr removing member 3 is mounted on the outer periphery of the rotating member 2 at the position of the supporting recess 2d.
The burr removing member 3 includes a substantially annular support 31. The support 31 has a hole 31a in the bottom of a bottomed cylindrical member, and a flange 31b is formed around the hole 31a.

  Further, three cutting blades 32, 32, 32 are projected in the outer diameter direction on the outer periphery of the support 31, while the three cutting blades 32, 32, 32 and the radial direction are projected on the inner periphery of the support 31. Engagement projections 33, 33, 33 protrude in the inner diameter direction at positions overlapping with (see FIG. 4).

The support 31 is mounted on the outer periphery of the rotating member 2 by inserting the engaging protrusion 33 into the engaging groove 21c of the tip member 21 of the rotating member 2 and disposing the flange 31b on the outer periphery of the supporting recess 2d. Has been.
Therefore, the burr removing member 3 is mounted so as to be slidable relative to the rotating member 2 in the axial direction but not relatively movable in the circumferential direction.

Further, an urging member 4 that slidably urges the burr removing member 3 is interposed between the burr removing member 3 and the rotating member 2.
The urging member 4 is mounted on the outer periphery of the supporting recess 2d, and is interposed between the flange 31b of the burr removing member 3 and the lower end portion of the main body 22 of the rotating member 2, and is connected to the upper supporting member 41 and the lower portion. A plurality of springs 43 are interposed between the side support member 42 and the side support member 42.
Both support members 41 and 42 are formed in an annular shape, and the circumferential positions of the plurality of springs 43 are kept constant. Although not shown, the support members 41 and 42 are connected by support shafts inserted inside the springs 43. It shall be.

Next, the operation of the first embodiment will be described.
When the metal members P1 and P2 shown in FIG. 1 are joined, a rotating member that is rotated by a rotating mechanism with respect to the contact portion PT in which the ends of the metal members P1 and P2 are in contact with each other as shown in the figure. 2 is moved in the axial direction by an advancing / retreating drive mechanism, and the protrusion 2c at the lower end is inserted into the contact part PT of the metal members P1 and P2, as shown in FIG. 5, and the slide mechanism is further driven. Thus, it is relatively moved along the contact portion PT in the horizontal direction.

As a result, frictional heat is generated between the protrusion 2c of the rotating member 2 and the metal members P1 and P2 of the contact portion PT, the metal members P1 and P2 are softened and plastically flow, and the metal members P1 and P2 are connected to each other. Integrated and joined.
At this time, a part of the softened metal is pushed out as the protrusion 2c penetrates and moves into the contact part PT, and a burr BR as shown in the figure is generated on both sides of the movement locus of the rotating member 2. . However, immediately after the burr BR is generated, the burr BR is cut off by the cutting blade 32 of the burr removing member 3 that moves together with the rotating member 2 while rotating integrally with the rotating member 2.

FIG. 6 shows a state of the metal members P1 and P2 after performing the above-described joining operation, and the contact portion PT indicated by a dotted line in the drawing is integrated by the above-described action.
In addition, the lower end surface is located at a position lower than the surface PH of the metal members P1 and P2 by a dimension L1 according to the height at which the lower end surface 2b is pressed along the position where the lower end surface 2b of the rotating member 2 is relatively moved. A joint surface PS having a width W1 corresponding to the diameter of 2b is formed. Further, on both sides of the joint surface PS, a cutting surface SS having a width W2 corresponding to the diameter of the rotating arc of the cutting blade 32 is provided at a position lower than the surface PH by the dimension L2 according to the height of the cutting blade 32. It is formed.
The cutting height by the cutting blade 32 can be appropriately set based on the urging force of the spring 43 of the urging member 4 and the balance of the hardness of the metal members P1 and P2 to be joined.
As described above, in the welding apparatus A according to the first embodiment, the burr BR just generated by the burr removing member 3 is removed after the above-described joining operation is performed. Therefore, it is necessary to perform a deburring operation separately. No work time and labor for the deburring process can be saved.
Further, while the burr BR has softening properties, it can be removed immediately, and a high excision performance excellent in surface quality can be obtained as compared with performing deburring in a separate process.

  Furthermore, in the first embodiment, since the burr removing member 3 is mounted on the outer periphery of the rotating member 2 and is configured to rotate integrally with the rotating member 2, when the burr removing member 3 is moved together with the rotating member 2, The driving force of the slide mechanism that moves the rotating member 2 and the metal members P1, P2 relative to each other can be used. Therefore, the configuration is simplified and the apparatus is downsized as compared with a moving mechanism that moves the burr removing member 3 independently of the rotating member 2 and a rotating mechanism that rotates independently of the rotating member 2. In addition, the manufacturing cost can be reduced.

(Other examples)
Other embodiments will be described below. Since these other embodiments are modifications of the first embodiment and the other embodiments, only the differences will be described, and common reference numerals will be used for common configurations. A description will be omitted by attaching a symbol, and a description of common effects will also be omitted.

A welding apparatus B according to the second embodiment will be described with reference to FIGS. 7 and 8.
The welding apparatus B according to the second embodiment is an example in which the burr removing member 203 moves in the horizontal direction together with the rotating member 2 without rotating integrally with the rotating member 2.

That is, in Example 2, as shown in FIG. 7, a burr removing member 203 having a substantially L-shaped outer shape as viewed from the front is attached to the lower end of the rotating member 2.
As shown in FIG. 8, the burr removing member 203 has an accommodation hole 203a for penetrating and accommodating the rotating member 2, and a side surface opposite to the horizontal movement direction SL of the rotating member 2 at the time of joining. A cutting blade 203c is integrally formed at the lower end of 203b, and a discharge port 203d for discharging the cut burr BR is opened on the cutting blade 203c.

  Further, the burr removing member 203 is in contact with the end surface P21 of the metal member P2, and a stopper portion 203e that prevents the burr removing member 203 from rotating integrally with the rotating member 2 protrudes downward and is integrally formed. Yes.

  Furthermore, an engagement flange 203g is formed on the outer periphery of the opening 203f of the receiving hole 203a of the burr removing member 203 to engage with the distal end large-diameter portion 21b in the axial direction when the support recess 2d is mounted.

  In the second embodiment, since the burr removing member 203 is not rotated integrally with the rotating member 2, the relative rotation between the engaging flange 203g and the distal end large diameter portion 21b of the rotating member 2 is not caused. A smooth bearing member 201 is interposed, and a bearing member 202 is also interposed between the lower support member 42 of the biasing member 4 and the engagement flange 203g to smoothly rotate both of them. .

Next, the operation of the third embodiment will be described.
When joining the metal members P1 and P2, as in the first embodiment, while the rotating member 2 is rotated, the protrusion 2c at the lower end thereof is brought into contact with the ends of the metal members P1 and P2. The contact portion PT is penetrated and moved along the contact portion PT.

  As a result, frictional heat is generated between the protrusion 2c and the contact part PT of the rotating member 2, the metal members P1 and P2 are softened and plastically flow, and the metal members P1 and P2 are integrally joined. .

At this time, as shown in FIG. 7, when the stopper portion 203e of the burr removing member 203 is brought into contact with the end surface P21 of the metal member P2, the protruding portion 2c is arranged at the contact portion PT. The dimensions are set.
Further, the burr removing member 203 is restricted from being rotated around the rotating member 2 because the stopper portion 203e is in contact with the end surface P21 of the metal member P2.

  Therefore, part of the softened metal is pushed out as the projecting portion 2c is moved through the contact portion PT by the joining operation described above, and burrs BR are generated on both sides of the moving locus of the rotating member 2. However, this burr BR is cut off by the cutting blade 203c of the burr removing member 203 disposed immediately after the moving direction of the rotating member 2, and led out of the burr removing member 203 from the discharge port 203d.

Therefore, even in the second embodiment, after the joining operation is performed, the burrs immediately after being generated are removed by the deburring member 203, so that it is not necessary to perform the deburring operation separately, and the time corresponding to the deburring process. And can save time and effort.
Further, while the burr BR has softening properties, it can be removed immediately, and a high excision performance excellent in surface quality can be obtained as compared with performing deburring in a separate process.

  Further, in the second embodiment, the burr removing member 203 is mounted on the outer periphery of the rotating member 2 and is configured to move integrally with the rotating member 2. Therefore, when the burr removing member 3 is moved together with the rotating member 2, The driving force of the slide mechanism that moves the rotating member 2 and the metal members P1, P2 relative to each other can be used. Therefore, the configuration can be simplified and the apparatus can be miniaturized and the manufacturing cost can be reduced as compared with a configuration in which a movement mechanism that moves the burr removing member 203 independently of the rotating member 2 is provided. Reduction can be achieved.

Based on FIG. 9 and FIG. 10, the welding apparatus C of Example 3 is demonstrated.
The welding apparatus C of the third embodiment is a modification of the second embodiment, and is an example used to join a cylindrical first metal member P31 and a second metal member P32 as metal members.

  The joining of these metal members P31 and P32 is used, for example, in the manufacturing process of the liquid tank of the air conditioner. That is, in manufacturing a cylindrical liquid tank with both ends closed, for example, the bottomed cylindrical second metal members P32 and P32 are joined to both ends of the metal cylindrical first metal member P31. Can be formed. Therefore, in the third embodiment, description will be made assuming that the second metal member P32 is used for joining one end of the cylindrical first metal member P31.

The welding apparatus C according to the third embodiment joins the circumferential contact portion PT2, and a burr removing member 303 is attached to the outer periphery of the lower end of the rotating member 2 shown in the first embodiment.
Further, in the third embodiment, when the rotating member 2 is relatively moved along the contact portion PT2 of both the metal members P31 and P32, the rotating mechanism that rotates both the metal members P31 and P32 in the direction indicated by the arrow SL2 in the drawing. It shall be equipped with.

  The burr removing member 303 includes a main body 303a having an accommodation hole 203a, an opening 203f, and an engagement flange 203g (not shown in FIGS. 9 and 10) similar to those in the second embodiment, and downward from a side portion of the main body 303a. And a protruding stopper portion 303e.

And the lower end surface 303b of the main body 303a is formed in the circular arc shape along the outer peripheral surface of both the metal members P31 and P32, and it implements in the edge part of the rotation direction (arrow SL2 direction) of both the metal members P31 and P32. A cutting blade 303c and a discharge port 303d similar to those shown in Example 2 are provided.
Further, when the side surface of the stopper portion 303e is brought into contact with the bottom surface P321 of the second metal member P32, the protruding portion 2c (not shown) of the rotating member 2 is disposed on the contact portion PT2. Is formed.

  The urging member 4 is provided between the burr removing member 303 and the rotating member 2 with the bearing member 202 interposed in the same manner as in the second embodiment. It is assumed that the bearing member 201 is also interposed between the member 2.

Next, the operation of the third embodiment will be described.
When joining both the metal members P31 and P32, as in the first embodiment, the rotating member 2 is rotated and the projection 2c at the lower end thereof is brought into contact with the ends of the two metal members P31 and P32. The contact portion PT2 is penetrated and moved along the contact portion PT2.

  As a result, frictional heat is generated at the protrusion 2c of the rotating member 2 and the contact portion PT2 of the two metal members P31, P32, the metal members P31, P32 are softened and plastically flowed, and the metal members P31, P32 are generated. The two are integrated and joined.

  At this time, the burr removing member 303 is restricted from rotating around the rotating member 2 because the stopper portion 303e is in contact with the bottom surface P321 of the second metal member P32.

  Therefore, with the above-described joining operation, part of the softened metal is pushed out as the protrusion 2c penetrates and moves into the contact part PT2, and burrs BR are generated on both sides of the movement locus of the rotating member 2. However, as shown in FIG. 10, the burr BR is cut off by the cutting blade 303c of the burr removing member 303 disposed immediately after the rotating member 2, and led out of the burr removing member 303 from the discharge port 303d. .

Therefore, even in the third embodiment, after the welding operation is performed, the burr BR just generated by the burr removing member 303 is removed, so that it is not necessary to perform a deburring operation separately. And can save time and effort.
Further, while the burr BR has softening properties, it can be removed immediately, and a high excision performance excellent in surface quality can be obtained as compared with performing deburring in a separate process.

  Furthermore, even in the third embodiment, since the burr removing member 303 is mounted on the outer periphery of the rotating member 2, compared with the one provided with a moving mechanism that moves the burr removing member 303 independently of the rotating member 2, The configuration can be simplified, the apparatus can be reduced in size, and the manufacturing cost can be reduced.

  As described above, the embodiment and Examples 1 to 3 of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment and Examples 1 to 3, and the present invention is not limited thereto. Design changes that do not depart from the gist are included in the present invention.

  For example, in the first to third embodiments, the burr removing members 3, 203, and 303 are mounted on the outer periphery of the rotating member 2, but the installation position of the burr removing member is limited to that mounted on the outer periphery of the rotating member. Instead, the burr removing member may be provided in parallel with the rotating member without being mounted on the outer periphery of the rotating member. In particular, as shown in the second and third embodiments, when the burr removing member is cut by sliding with respect to a metal member, it is not necessary to apply a rotational driving force. Easy to cut.

  Further, in the example in which the burr removing members 203 and 303 do not rotate integrally with the rotating member 2 as in the second and third embodiments, the metal members P1, P2, P31, and P32 are provided on the burr removing members 203 and 303. Although the device that abuts against the end surface P21 and the bottom surface P321 and restricts the rotation of the burr removing members 203 and 303 is shown, the means for restricting the rotation of the burr removing member relative to the rotating member is not limited thereto. Absent. For example, the rotation of the burr removing member may be restricted from the drive unit 1a of the apparatus main body 1, for example, a rod-like rigid body may be extended and engaged with the burr removing member.

  In the first to third embodiments, when the burr removing members 3, 203, 303 are moved along the contact portions PT, PT2, a moving mechanism that moves the rotating member 2 along the contact portions PT, PT2 is used. Although the burr removing members 3, 203 and 303 are relatively moved, the present invention is not limited to this, and a dedicated moving mechanism for moving the burr removing member may be provided separately.

  Moreover, although the example which provided the three cutting blades 32 was shown in Example 1, the number is not limited to this, What is necessary is just to have one or more.

  Moreover, in Examples 1-3, although the urging | biasing member 4 has shown the example which generate | occur | produced the urging | biasing force with the coiled several spring 43, as a means to give urging | biasing force to a burr | flash removal member in this way, In addition to using a plurality of coiled springs, an elastic member such as rubber or a fluid spring may be used, and without using a plurality of springs 43 in this way, on the outer periphery of the supporting recess 2d, One spring or elastic member may be wound.

It is a perspective view which shows the whole welding apparatus A of Example 1 of the best mode of the present invention. It is sectional drawing which shows the front-end | tip part periphery structure of the rotating member 2 of the welding apparatus A of Example 1. FIG. It is a disassembled perspective view which shows the front-end | tip part periphery structure of the rotary member 2 of the welding apparatus A of Example 1. It is a perspective view which shows the principal part of the burr | flash removal member 3 used for the welding apparatus A of Example 1. FIG. It is sectional drawing for demonstrating an effect | action of the welding apparatus A of Example 1. FIG. It is a perspective view which shows the metal members P1 and P2 joined by the welding apparatus A of Example 1. FIG. It is a perspective view which shows the principal part of the welding apparatus B of Example 2. FIG. It is sectional drawing which shows the front-end | tip peripheral structure of the rotating member 2 of the welding apparatus B of Example 2. FIG. It is a perspective view which shows the principal part of the welding apparatus C of Example 3. FIG. It is sectional drawing for demonstrating an effect | action of the welding apparatus C of Example 3. FIG.

Explanation of symbols

2 Rotating member 2c Protruding part 3 Burr removing member 32 Cutting blade 203 Burr removing member 203c Cutting blade 303 Burr removing member 303b lower end surface (arc surface)
303c Cutting blade 303e Stopper portion BR Burr P1 Metal member P2 Metal member P31 Metal member P32 Metal member P321 bottom surface PT Contact portion PT2 Contact portion

Claims (4)

A rotating member having a protrusion at the tip;
A rotating mechanism for rotating the rotating member;
A moving mechanism for allowing the rotating member and the metal member to move relative to each other so as to cause the protrusion to penetrate the abutting portion where the metal members are brought into contact with each other, and to be moved along the abutting portion;
A welding apparatus capable of performing friction stir welding to integrate the metal members by friction generated by penetrating into the contact portion while rotating the protrusion,
A burr removing member is formed which is movable relative to the metal member together with the rotating member, and is capable of removing a burr generated in a joining step of penetrating the protrusion into the contact portion. Welding device characterized by.   The burr removing member is provided on the outer periphery of the rotating member so as to be rotatable integrally with the rotating member, and includes a cutting blade capable of cutting the burr when rotating integrally with the rotating member. The welding apparatus according to claim 1, wherein   The burr removing member is mounted on the outer periphery of the rotating member so as to be rotatable relative to the rotating member, and the burr removing member is restricted from rotating along with the rotating member and has a constant attitude with respect to the metal member. 2. A stopper portion for maintaining the burrs is provided, and the burr removing member includes a cutting blade capable of cutting the burrs as the burrs are relatively moved along the contact portion. The welding apparatus as described in. The metal member to be joined has a bottomed cylindrical shape, and the abutting portion has an arc shape along the outer periphery of the cylindrical shape,
The burr removing member has an arc surface along the outer periphery of the bottomed cylindrical metal member, and a stopper portion that contacts the bottom surface of the metal member and restricts the rotation of the rotating member is integrated. The welding apparatus according to claim 3, wherein the welding apparatus is formed.

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