JPH1199415A - Method of manufacturing welded article and link material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a welded article capable of producing a welded article such as a link material with high productivity and forming a welded part having good quality without defects. provide. SOLUTION: A slice is cut to form a joint member 2
Extruded aluminum material 5
7 are welded to each other before the slice cutting, and thereafter, the welded raw materials 5 to 7 are slice-cut.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a welded product such as a link material used for an automobile or the like, and a link material.

[0002]

2. Description of the Related Art For example, as shown in FIG. 10 (a), when a link member (51) used for an automobile has a short length L, the link member (51) is as shown in FIG. 10 (b). As shown in the figure, an extruded shape (52) made of aluminum (including the alloy thereof, the same applies hereinafter) having a lateral cross-sectional shape of the link material (51) is used as a raw material, and this extruded shape (52) is used. ) Can be easily manufactured by slice cutting.

However, when the length L of the link material (51) is long, the diameter of the circumcircle of the cross section of the extruded material (52) as the material must be considerably large. In some cases, the production cost is increased, and the above-mentioned production is sometimes difficult or impossible due to the limitation of extrusion.

Therefore, when the length L of the link member (51) is long, the link member (51) is divided into a plurality in the longitudinal direction as shown in FIG. It is conceivable to adopt a manufacturing method in which each of the divided constituent members (54) (55) (56) is welded into a link material (51). (W) is a weld. That is, FIG.
As shown in (b), each member (54) (55) (5)
Extrusion processing is performed using aluminum extruded profiles (57), (58), and (59) whose lateral shape is the cross-sectional shape of 6), and then these extruded profiles (57), (58), (59)
Are individually slice-cut, and then the obtained member (5
4) This is a manufacturing method in which (55) and (56) are welded into a link material (51).

[0005]

However, if the above-described manufacturing method is adopted as a manufacturing method when the link member (51) is divided, the respective constituent members (54) are not used.
Extruded profiles (57) (5)
8) The slice cutting in (59) must be performed individually, and the component members (5
4) The link members (51) must be manufactured one by one by combining and welding the (55) and (56) with each other, so that the link members (51) can be manufactured with good productivity and at low cost. There was a problem that it was difficult to manufacture in.

Also, the constituent members (54), (55), (56)
When welding is performed, there is a problem that defects tend to occur at the welding start and end portions and quality control of the welded portion is difficult. Although some improvement can be made by applying preheating during welding, it is necessary to save time for preheating, and the welding speed cannot be increased.

[0007] In view of the above problems, the present invention can produce a welded product such as the above-mentioned link material with high productivity, and forms a welded part having no defects and good quality. It is an object of the present invention to provide a method for manufacturing a welded product that can perform the welding.

[0008]

The above objects are achieved by the first and second aspects.
A method of manufacturing a welded product configured by welding at least two members of the above, wherein the raw materials to be sliced and cut into the first and second members are continuously and continuously welded to each other before the slice cutting. The problem is solved by a method for manufacturing a welded product, which is characterized in that the welded material is sliced and cut.

That is, in this manufacturing method, welding and cutting operations can be performed collectively, and a welded product can be manufactured with high productivity.

In addition, the starting and ending portions of the welding are only present at both ends in the longitudinal direction of the material. These portions are removed as discarding allowance, and the intermediate portion excluding both ends is sliced and cut to obtain a welded product. By doing so, it is possible to make each welded product of good quality and stable. In addition, preheating is not required for welding, and welding can be performed at high speed.

Another object of the present invention is to provide a method of manufacturing a welded article formed by welding at least two members, a first member and a second member. While arranging, the material to be sliced and cut into the second member is combined so as to pass over the first member group before the slice and cut, and the material for the second member and each first member are continuously connected. The method can also be solved by a method for manufacturing a welded article, characterized in that the material for the second member is sliced and cut in units of the first member.

That is, in the present manufacturing method, the welding operation can be performed at a time, and a welded product can be manufactured with high productivity.

Further, the plurality of first members are arranged side by side without any gap, and a material for the second member and each of the first members are arranged.
Because it is to weld the member, welding can be performed continuously along the longitudinal direction of the material,
The beginning and end of welding are only present at both ends in the longitudinal direction of the material, and that part is removed as a discard allowance, and the middle part excluding both ends is sliced and cut to obtain a joint product. The welded portion of the welded product can be made of good quality and stable.

Further, the material for the first member before separation has a large number of hollow holes along the width direction in the length direction, and has cut holes between adjacent hollow holes in parallel with these hollow holes. ,
When the first member is formed by being cut in the width direction along the position of the cutting hole, the cutting operation can be simplified since the cutting may be performed at the cutting hole. Moreover, the first member necessarily has a hollow hole in the longitudinal direction of the member, which contributes to the weight reduction of the welded product.

[0015] Further, the link material manufactured by the method according to the present invention has high quality without welding defects.

[0016]

Next, embodiments of the present invention will be described with reference to the drawings.

In this embodiment, a link material used as an automobile part is manufactured.

Link material (1) manufactured in the first embodiment
As shown in FIG. 1, is divided into three in its length direction, and has two end members (2) and (3) having connection holes (2a) and (3a), and one intermediate member (4). Are constituent members. The link material (1) includes these members (2) and (3)
It is configured as an aluminum welded product obtained by welding (4). (W) is a weld.

The link member (1) is manufactured as follows. That is, as shown in FIG. 2A, first, raw materials (5), (6), and (7) that are sliced and cut into end members (2) (3) and an intermediate member (4) are extruded. To manufacture.
In the material (5) (6) for the end member, fitting recesses (5a) (6a) capable of fitting the side edges of the material (7) for the intermediate member to one side are extruded. Mold it. Also,
In the material (7) for the intermediate member, hollow portions (7a) ... for weight reduction are extruded. With the above-described divided configuration, each of the materials (5), (6), and (7) can be easily manufactured by extrusion.

Next, as shown in FIG. 2 (b), the end member materials (5) and (6) are fitted to the respective side edges of the obtained intermediate member material (7), and Material (5) (6)
(7) is combined in a parallel state with the same extrusion axis direction. At this time, by fitting the side edges of the material (7) for the intermediate member into the fitting recesses (5a) (6a) of the material (5) (6) for the end member, an appropriate assembly state is achieved. It is easily temporarily fixed.

Then, the materials (5), (6), and (7) combined as described above are fixed with a jig as necessary,
As shown in FIG. 3C, the materials (5), (6), and (7)
Is continuously welded linearly from one end to the other end in the longitudinal direction of the material, and the materials (5), (6), and (7) are joined and integrated with each other. As a result, the starting and ending portions of the welding are present only at the longitudinal ends of the raw materials (5), (6) and (7). The welding may be performed by any welding means such as MIG, TIG, torch brazing, laser or the like.

Thereafter, as shown in FIG.
The joined raw materials (5), (6), and (7) are collectively cut to a required thickness in a plane perpendicular to the welding direction from one end side to the other end side. Welded material (5)
(6) Since both ends of (7) have a starting end and a terminating end of welding, this portion is removed as a discard margin in this slice cutting. As described above, FIG.
The link material (1) as shown in FIG.

According to the above-described manufacturing method, joining and cutting can be performed at a time, and the link member (1) having a divided structure can be manufactured with higher productivity than in the past. In addition, since each link member (1) does not have a welding start and end portion, the welded portion (W) of the link member (1) can be made stable and high quality. Further, in the above embodiment, each of the materials (5), (6), and (7) is an extruded material,
The raw materials (5), (6), and (7) can be easily manufactured, and the raw materials (5), (6), and (7) can be manufactured with high accuracy. ) (6)
(7) Further, the degree of freedom of the cross-sectional design of the constituent members (2), (3) and (4) can be increased. FIG.
FIG. 4C shows a modification of the above embodiment. As shown in FIG. 4C, the link member (1) is divided into two parts at the center in the length direction, and the left half member (8) is formed. And the right half member (9) as constituent members. The link material (1) is configured as a welded product in which these members (8) and (9) are joined by welding. (W) is a weld. The manufacturing method is the same as in the above embodiment. That is, after the material (10) for the left half member and the material (11) for the right half member are extruded, the two materials are combined and continuously from one end to the other end in the longitudinal direction of the material. After the welding, it is sequentially cut to a required thickness in a plane perpendicular to the welding direction. FIG.
(A) As shown in (b), the material (1
0) and the right side member material (11) are formed with extruded fitting portions (10a) and (11a) which are fitted into and recessed from each other. ) Is fitted into a proper assembled state by being fitted tightly, and is temporarily fixed. Thus, the number of members constituting the welded article may be variously changed.

FIGS. 5 to 7 show a second embodiment. The link material (1) of the present embodiment is divided into three in the length direction similarly to the above-described first embodiment, and is provided with a connecting hole (2).
a) two end members (2) and (3) having (3a);
And two intermediate members (12) as constituent members. The link material (1) is configured as a welded product made of aluminum in which these members (2), (3), and (12) are joined by welding. (W) is a weld. The intermediate member (12) is the first member according to the present invention (claim 3), and the end member (2).
(3) is the second and third members.

In this embodiment, the link member (1) is manufactured as follows. That is, as shown in FIG. 6A, first, raw materials (5) and (6) which are slice-cut and become end members (2) and (3) are extruded. The material (5) (6) for the end member has a fitting recess (5a) (6) on one side thereof.
Extrude a). On the other hand, the intermediate member (1
2) is manufactured as follows. That is, an H-shaped cross section is extruded and cut into length units of the intermediate member (12) to manufacture many intermediate members (12).

Next, as shown in FIG. 6 (a), a number of intermediate members (12)... Obtained as described above are arranged side by side without gaps, and a long material for the end member is arranged from both sides. (5) As shown in FIG. 6 (b), as shown in FIG. 6 (b), the intermediate members (12). That is, the material (5) (6) and the intermediate member (1)
2) Combine them so that their extrusion axis directions are different by 90 °.

Then, the intermediate members (12)... And the materials (5) and (6) combined as described above are fixed with jigs as necessary, and as shown in FIG. The boundary between the material (5) (6) and the intermediate member (12)... Is linearly continuous from one end in the longitudinal direction of the material (5) (6) to the other end. Attachment, welding by laser, etc., intermediate member (12) ... and material (5)
(6) are joined together. This allows for the beginning of the weld,
The end portions exist only at both longitudinal end portions of the raw materials (5) and (6).

Thereafter, as shown in FIG.
The raw materials (5) and (6) are sequentially cut to a required thickness in a plane orthogonal to the welding direction for each intermediate member (12). Since both ends of the welded material (5) and (6) have a starting end and a terminating end of the welding, these parts are removed as a throwaway in slice cutting. As described above, the link member (1) as shown in FIG. 5 is obtained.

According to the present embodiment, welding can be performed at a time, and the link material (1) can be manufactured with high productivity. Similarly, each link member (1) does not have a welding start or end portion, and a welded portion (W) of each link member (1) can be made stable and high quality.
Moreover, in the present embodiment, each of the constituent members (2), (3), (1)
2) is made of extruded material, and the constituent members (2) and (3)
(12) is a joined product obtained by joining in different extrusion axis directions, and it is possible to manufacture such a complicated three-dimensionally shaped link material (1) with high productivity.

FIG. 8 shows a modification of the material (7) for the intermediate member (4) in the embodiment shown in FIGS. This material (7 ') has a through-hole (7) extending in the width direction (the direction connecting the materials (5) and (6) on both sides).
A large number of b) are provided at intervals in the length direction, and a cut-out hole (7c) is formed between the adjacent hollow holes (7b) and (7b) in parallel with the hollow hole. Such a material (7 ') can be easily obtained by cutting an extruded material in which the hollow hole (7b) and the cut hole (7c) are formed by extrusion in a predetermined length in the extrusion direction.

Then, in the same manner as in the embodiment of FIGS. 1 to 3, the end member materials (5) and (6) are fitted to each side edge of the intermediate member material (7 ') and combined. Thereafter, the boundaries of the raw materials (5), (6) and (7 ') are continuously welded to be joined and integrated, and thereafter, the joined raw materials (5) and (6)
(7 ') is indicated by a broken line shown by a chain line in FIG.
Slice cutting is performed in a manner matching the cutting hole (7c) of (1). In this manner, by performing the slice cutting along the cutting hole (7c) of the raw material (7 '), the cutting area is reduced and the cutting operation is facilitated.

Thus, as shown in FIG.
Two end members (2) having connecting holes (2a) (3a)
(3) and an intermediate member (4 ′) as a constituent member, and an aluminum link member (1) obtained by welding these members.
Get. In this link material (1), the intermediate member (4
As shown in FIG. 8 (c), a penetrating hollow hole (4a) is inevitably formed in the shaft center portion of (1), and the link member (1) is lightweight and excellent in strength. Can be done.

FIG. 9 shows a modification of the intermediate member (12) in the embodiment shown in FIGS. The intermediate member (12 ') shown in Fig. 9 has a through-hole (12a) at the axial center. This intermediate member (12 ')
A large number of penetrating hollow holes (12a) along the width direction are provided at intervals in the length direction, and adjacent hollow holes (12a) are formed.
a) It is obtained by cutting an extruded material of a predetermined length in which a through-hole (12b) is provided in parallel with the hollow hole between (12a) and along the cutting hole (12b). Things.

In the same manner as in the embodiment shown in FIGS. 5 to 7, a large number of intermediate members (12 ') are arranged in a side-by-side state without gaps, and raw materials (5) and (6) for end members are arranged from both sides. After combining the materials (5) and (6) and the intermediate member (12)
）) ... is continuously welded. After welding, the raw materials (5) and (6) are sequentially slice-cut in units of intermediate members (12 ').

Thus, as shown in FIG.
Two end members (2) having connecting holes (2a) (3a)
(3) and an intermediate member (12 ') as a constituent member, and an aluminum link member (1) obtained by welding these members.
Get. Also in this link material (1), the intermediate member (1
As shown in FIG. 9 (c), the through hole (12a) is formed in the shaft center portion 2 '), so that the link member (1) can be made lightweight and excellent in strength.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention. For example, in the above-described embodiment, the constituent members and the material are formed by extruded shapes, but may be formed by a cast material or a continuous cast material. In addition, the material is various metal materials other than aluminum,
Other various resin materials may be used. In addition, it is needless to say that the present invention is not limited to the manufacture of link members and arm members, but can be widely applied to the manufacture of various welded products. Further, mutual assembling of the raw materials and the raw material and the member may be performed by a method in which the raw materials are simply brought into abutting state and fixed by a jig or the like instead of the fitting type.

[0037]

As described above, according to the method for manufacturing a welded product of the present invention, the welding and cutting operations can be performed collectively, and the welded product can be manufactured with good productivity and at a low cost. I can do it.

Moreover, the welding start and end portions existing at both ends in the longitudinal direction of the material are removed as discarding allowances, and the intermediate portion excluding both ends is sliced and cut to obtain a joint product. Can be made stable with good quality. In addition, preheating is not required for welding, and welding can be performed at high speed.

Further, the material for the first member before separation has a large number of hollow holes along the width direction in the length direction, and has cut holes between adjacent hollow holes in parallel with these hollow holes, When the first member is formed by being cut in the width direction along the position of the cutting hole, the material for the intermediate member or the cutting of the intermediate member may be performed in the cutting hole. And the first member necessarily has a hollow in the longitudinal direction of the first member, which can contribute to weight reduction of a welded product.

Further, the link material manufactured by the method according to the present invention can be made of high quality without welding defects.

[Brief description of the drawings]

FIG. 1 is a perspective view of a link member manufactured by a method according to a first embodiment.

FIGS. 2 (a) and 2 (b) are perspective views sequentially showing a method of manufacturing the link member of FIG. 1 together with FIGS. 3 (c) and 3 (d).

FIGS. 3 (c) and (d) are perspective views sequentially showing the method of manufacturing the link member of FIG. 1 together with FIGS. 2 (a) and 2 (b).

FIG. 4 shows a modification of the first embodiment.
(C) is a perspective view sequentially showing a method of manufacturing the link material.

FIG. 5 is a perspective view of a link member manufactured by the method according to the second embodiment.

6 (a) and 6 (b) are perspective views sequentially showing a method of manufacturing the link member of FIG. 5 together with FIGS. 7 (c) and 7 (d).

FIGS. 7 (c) and (d) are perspective views sequentially showing a method of manufacturing the link member of FIG. 5 together with FIGS. 7 (a) and 7 (b).

8A is a perspective view showing a modification of the intermediate member material in the embodiment shown in FIGS. 1 to 3, and FIG. 8B is a perspective view of a link member manufactured using the material. (C) is a cross-sectional view of the intermediate member of the link material.

9A is a perspective view showing a modified example of the intermediate member in the embodiment shown in FIGS. 5 to 7, and FIG. 9B is a perspective view of a link member manufactured using the material; FIG. () Is a cross-sectional view of the intermediate member of the link member.

FIGS. 10A and 10B show a prior art example, wherein FIG. 10A is a side view of a link member, and FIG. 10B is a perspective view showing a manufacturing method thereof.

FIGS. 11A and 11B show another prior art example, in which FIG. 11A is a side view of a link member, and FIG. 11B is a perspective view showing a manufacturing method thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Link material (welded article) 2-4, 8, 9, 12 ... Constituent member W ... Weld part 5-7, 10, 11 ... Material 7b, 12a ... Hollow hole 7c, 12b ... Cutting hole

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Noriyuki Iwakiji 6,224 Kaiyamacho, Sakai City Showa Aluminum Co., Ltd.

Claims (4)

[Claims] 1. A method for manufacturing a welded product comprising a first and a second at least two members welded to each other, wherein a raw material to be sliced and cut into first and second members is cut before a slice is cut. Weld each other continuously in advance, and then
A method for manufacturing a welded product, characterized in that the welded material is sliced and cut. 2. A method for manufacturing a welded article comprising a first and a second at least two members welded together, wherein a large number of first members separated in advance are arranged in a parallel state without gaps, Combining the raw material to be sliced into the second member so as to pass over the first member group before the slice cutting, continuously welding the raw material for the second member and each first member, Then, the material for the second member is changed to the first
A method for manufacturing a welded product, wherein a slice is cut in units of members. 3. The material for the first member before separation has a large number of hollow holes along the width direction in the length direction, and has cut holes between adjacent hollow holes in parallel with the hollow holes. , By being cut in the width direction along the position of the cut hole,
The method for producing a welded product according to claim 1, wherein the member is formed. 4. A link member comprising a welded product manufactured according to claim 1.