JPH10180467A - Friction welding equipment for pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the friction welding over the whole periphery by inserting a rotary probe between pipe end faces which are opposite to each other and closely attached to each other, and circulating the probe around the pipe while the bonding surfaces are locally softened by the friction heat in joining non-ferrous pipes such as aluminum and copper. SOLUTION: End faces of pipes P1, P2 are closely attached to a support roller 7A, and loaded, a joining surface F of the pipes is positioned to a welding probe 27P of a working head 20, and the pipes are pressed against the support roller 7A side by a press roller 21. A welding tool 27 of the working head 20 is turned and lowered, a lower end of the probe 27P is faced the pipe joining surface F and pressed thereagainst, the joining surface F is locally softened by the generated friction heat, and the probe 27P is immersed. The support roller 7A is turned by a drive motor 11, the pipe joining surface F is turned, the whole periphery of the joining surface F is joined by continuing generation of the friction heat by turning the probe 27P, softening the joining surface, stirring, joining and solidification, and then, the probe 27P is drawn out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction welding apparatus for performing friction welding of nonferrous metal pipe materials such as aluminum and its alloys and copper and its alloys. The present invention relates to a friction welding apparatus including a welding tool including a probe for generating frictional heat at a joint surface of a second pipe member.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 7-505090 is a prior example which is considered to be related to the present invention.

[0003]

The above prior arts are the first and the first.
When the second work is a plate, friction welding of the first and second works is performed. When the work is a pipe, friction welding is difficult.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, a first aspect of the present invention provides a support roller for supporting and rotating first and second pipe members to be butt-welded. Welding tool comprising: a pressing roller for pressing the first and second pipe members in the direction of the support roller; and a probe for generating frictional heat at a joint surface between the first and second pipe members. And a machining head having a spindle capable of detachably replacing the welding tool and rotating the spindle.

According to a second aspect of the present invention, in the first aspect of the invention, the processing head and the pressing roller are configured to be capable of adjusting the position vertically according to the diameter of the pipe material.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 and 2, a pipe material friction welding apparatus 1 according to the present embodiment includes a frame 3 on a bed 5 integrally provided below the frame 3. Include first and second pipe materials P1,
A pair of support rollers 7A and 7B that support P2 are rotatably supported. One of the support rollers 7A and 7B is linked to the drive motor 11 via an appropriate power transmission mechanism 9.

In the present embodiment, the power transmission mechanism 9 has a configuration in which an endless chain 17 is wound around a sprocket 13 provided on the drive motor 11 and a sprocket 15 provided on the support roller 7A.

An upper / lower position adjusting member 19 capable of adjusting the mounting position up and down by, for example, mounting bolts is mounted on the upper portion of the frame 3, and a working head 20 for welding is mounted on the upper / lower position adjusting member 19. A roller bracket 23 having a pressing roller 21 for pressing the first and second pipe members P1 and P2 toward the support rollers 7A and 7B is mounted so as to be vertically movable.

More specifically, the processing head 20 is supported by a spindle 25 rotatably driven by a motor M so as to be rotatable and vertically movable.
A welding tool 27 provided with a probe 27P for generating frictional heat between the first and second pipe members P1 and P2 at the lower end thereof and facing the joining surface F of the first and second pipe members P1 and P2 to replace the attachment and detachment. Mounted as possible.

The welding tool 27 is made of, for example, tool steel and has a higher hardness than the first and second pipe members P1 and P2 made of a non-ferrous metal such as aluminum or an alloy thereof. The configuration is such that the small-diameter probe 27P having a length substantially equal to the plate thickness of the first and second pipe members P1 and P2 is protruded from the center of the lower surface of the large-diameter shank portion.

The roller bracket 23 which rotatably supports the pressing roller 21 is vertically moved by a pressing actuator 29 such as an air cylinder or the like appropriately mounted on the vertical position adjusting member 19 on both the left and right sides of the processing head 20. Pushing operation rod 3 for each piston rod etc.
1 is attached to the lower end.

A roller stand 33 is provided on both left and right sides of the bed 5. The roller stand 33 includes a pair of auxiliary rollers 35 for supporting the first and second pipe members P1 and P2. 37 are supported. The roller stand 33 is desirably provided so as to be position-adjustable in the left-right direction corresponding to the lengths of the first and second pipe members P1 and P2.

In the above configuration, the vertical position adjusting member 19 is adjusted up and down in advance in accordance with the diameters of the first and second pipe members P1 and P2 to be butt-welded, and the pair of support rollers 7A and 7B are adjusted. And a welding tool provided with the joining surface F of the first and second pipe members P1 and P2 on the machining head 20 while placing the first and second pipe members P1 and P2 over the right and left auxiliary rollers 35. Positioning is performed according to 27.

Next, the pressing operation device 29 is operated to press the first and second pipe members P1 and P2 toward the supporting rollers 7A and 7B by the pressing roller 21, and the spindle 25 of the welding head 20 is driven by the motor M. When the lower end of the probe 27P in the welding tool 27 is pressed down to the joint surface F of the first and second pipe members P1 and P2, the probe 27P is rotated with respect to the joint surface F. Friction generates frictional heat between the probe 27P and the joint surface F.

As a part of the joint surface F is softened by the frictional heat, the probe 27P is immersed in the softened portion. After that, the driving motor 11 is driven to
When A is rotated, the first and second pipe members P1 and P2 are rotated, and the joint surface F gradually moves with respect to the probe 27P.

When the first and second pipe members P1 and P2 are rotated, the probe 27P of the welding tool 27 gradually moves with respect to the joint surface F of the pipe members P1 and P2. Gradually moves along the joining surface F. As described above, when the probe 27P relatively moves along the joint surface F, the softened metal on the joint surface F is stirred by the rotation of the probe 27P and is moved to the rear in the direction perpendicular to the probe 27P. Since it is solidified, the pipe materials P1, P
The friction welding of the joining surface F of No. 2 is performed. In addition,
After friction welding has been performed on the joining surfaces F of the pipe materials P1 and P2 over the entire circumference, the friction welding of the joining surfaces F is completed by extracting the probe 27P from the joining surfaces F.

The present invention is not limited to the embodiment described above, but can be implemented in other modes by making appropriate changes. For example, in the above-described embodiment, the configuration in which the welding processing head 20 is disposed above the pipe materials P1 and P2 has been described.
Can be arranged at a position below or in a lateral direction of the pipe materials P1 and P2.

The pressing roller 21 is not limited to the left and right sides of the processing head 20, but may be arranged in the front-back direction of the processing head 20.

That is, the present invention can be implemented even if various changes are made.

[0020]

As will be understood from the above description, the invention according to claim 1 is the first and the first to be butt-welded.
A support roller for supporting and rotating the second pipe member, a pressing roller for pressing the first and second pipe members in the direction of the support roller, and joining the first and second pipe members It comprises a welding tool provided with a probe for generating frictional heat on a surface, and a working head provided with a spindle capable of detachably replacing the welding tool and rotating.

Therefore, friction welding of the joining surfaces of the first and second pipe members can be performed.

According to a second aspect of the present invention, in the first aspect of the invention, the processing head and the pressing roller are configured to be vertically adjustable in accordance with the diameter of the pipe material. Even if the diameter is variously changed, it can be easily handled.

[Brief description of the drawings]

FIG. 1 is a conceptual side view illustrating a friction welding apparatus for pipe materials according to an embodiment of the present invention.

FIG. 2 is a conceptual front view illustrating a pipe material friction welding apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Friction welding device 7A, 7B Support roller 11 Drive motor 19 Vertical position adjustment member 20 Processing head 21 Press roller 25 Spindle 27 Welding tool 27P Probe 29 Pressing device 35 Auxiliary roller

Claims (2)

[Claims] 1. A support roller for supporting and rotating first and second pipe members to be butt-welded, and a pressing roller for pressing the first and second pipe members in the direction of the support roller. A welding tool having a probe for generating frictional heat on the joint surface of the first and second pipe members, and a processing head having a spindle capable of detachably replacing the welding tool and a rotatable spindle. A friction welding device for pipe material, comprising: 2. A friction welding apparatus for a pipe material according to claim 1, wherein the processing head and the press roller are configured to be vertically adjustable in accordance with the diameter of the pipe material. .