JP2003136276A - Manufacturing method of plate member for welded structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method capable of efficiently and easily manufacture a large number of welded structural plate members with an attachment plate welded to a base plate (for example, a longitudinal rib of a synthesized floor board, a transverse member of a riveted girder or the like, a side longitudinal girder of a steel floor board, and the like as components of a bridge). SOLUTION: This method comprises a welding step of performing the permanent welding of attachment plates 4 by a multi-electrode automatic welding machine after temporarily welding the attachment plates 4 according to marks drawn in advance at position of an original plate corresponding to attachment plate welding positions of base plates 2 from which a large number of attachment plates are obtained on the surface of the original metal plate 5, a straightening step of press-straightening the original plate 5 with the attachment plates 4 welded thereon by a panel straightening device or the like, and removing weld strain generated in the welding step, and a cutting step of forming holes 3 in the original plate 5 with the weld strain removed therefrom by a numerically controlled flame planar gas cutting machine, and cutting off each base plate 2 from the original plate 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welded structure plate member obtained by welding an attached plate to the surface of a substrate (for example, vertical ribs of a synthetic floor plate which is a component of a bridge, horizontal structures such as a girder, and steel floor plates). The present invention relates to a method of manufacturing a welded structure plate member suitable for manufacturing a large number of side stringers and the like.

[0002]

2. Description of the Related Art For example, in a bridge, a large number of welded structural plate members such as vertical ribs of a composite floor plate formed by welding a plate attached to a base plate, horizontal structures such as plate girders, and side vertical girders of steel floor plates are used. Therefore, it is necessary to manufacture many of these welded structure plate members having the same shape.

Generally, when a large number of welded structural plate members having the same shape as described above are manufactured, a substrate (for example, a main rib in a vertical rib of a synthetic floorboard) and an attached plate (for example, a reinforcing rib in a vertical rib of a synthetic floorboard) are used as metal original plates. I took many pieces from
An attached plate is welded for each substrate cut out from the original plate to produce a welded structure plate member. That is, each welded structural member is subjected to predetermined pretreatment such as marking and punching of the attachment plate welding point on the board, temporary attachment of the attachment plate to the board is assembled, and then the attachment plate is main welded. It is obtained by performing a straightening process for removing distortion caused by welding.

[0004]

However, when a large number of welded structure plate members are manufactured by performing such a manufacturing process for each welded structure plate member, the manufacturing efficiency is extremely low and the labor burden is also very large. .

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method capable of efficiently and easily producing a large number of welded structure plate members formed by welding an attached plate to a substrate. It is intended.

[0006]

DISCLOSURE OF THE INVENTION The present invention is a method for producing a welded structure plate member by welding an attachment plate to the surface of a substrate, and a plurality of substrates to be taken from the surface of a metal original plate. A welding step of welding the attachment plate at the original plate position corresponding to the attachment plate welding position, and a correction step of performing a correction process on the original plate to which the attachment plate is welded for the purpose of removing welding distortion,
A method for manufacturing a welded structure plate member, which comprises a cutting step of cutting out each substrate from a straightened original plate.

In the preferred embodiment, in the cutting step, a plurality of substrates are simultaneously cut out from the original plate by a numerically controlled frame planar gas cutting machine. In addition, the first and second substrates are formed by two parallel straight lines.
In the case where the outer peripheral edge is composed of the outer peripheral edge and the third and fourth outer peripheral edges connecting the both ends thereof, the cutting step is performed by numerically controlling the third and fourth outer peripheral edges of the substrate. It may be separated into a first cutting step of cutting with a laser cutting machine and a second cutting step of cutting the first and second outer peripheral edges of the substrate with a frame planar gas cutting machine after the completion of the first cutting step. preferable. When the substrate has one or a plurality of holes, the punching step of performing the punching process on the original plate at the original plate position corresponding to the hole position of each substrate to be taken from a large number is performed before the cutting process. To do.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below based on the embodiments shown in FIGS. 1 to 5 or 6 to 9.

FIGS. 1 to 5 show the first embodiment and relate to an example in which the method of the present invention is applied to the case where a large number of vertical ribs 1 in a composite floor plate of a bridge are manufactured. As shown in FIG. 5, the vertical rib 1 has a cross section T formed by welding an attached plate (reinforcing rib of the vertical rib 1) 4 to the surface of a substrate (main body rib of the vertical rib 1) 2 having a plurality of holes 3. It is a character-shaped welded structure plate member. The attachment plate 4 has a rectangular plate shape extending in the longitudinal direction of the substrate 2.

The vertical rib 1 which is the welded structure plate member is manufactured according to the present invention through the following marking process, welding process, original plate correcting process and cutting process. By the way, the scoring process is carried out by an NC scoring machine, and the cutting process is carried out by an NC frame planar gas cutting machine. However, when starting the production of the vertical ribs 1, the scoring process and the cutting process are performed in advance for an NC machine tool. 1 is created by a well-known NC data creating device according to the procedure shown in FIG.

First, an attribute data (original size shape) 22 of an original plate 5 which is a rectangular metal plate and an attribute data (original size shape, hole position, attachment) of a base plate 5 which is a rectangular metal plate are provided by a multi-piece processing unit (CAD, etc.) 21 of an NC data creating apparatus. The multi-piece drawing data 24 is created from the plate welding position 23). This figure data 24
Is CAD data showing the surface shape of the original plate 5, the surface shape of the substrate 2 (the welding scoring lines 4a of the attached plate 4 are formed), and the multi-cavity arrangement form of the substrates 2 on the surface of the original plate 5. Therefore, the distortion due to the welding of the attached plate 4 is taken into consideration.
As shown in FIG. 2, the multi-cavity arrangement configuration includes a plurality of substrates 2
Are set in parallel in the width direction of the original plate 5 (vertical direction in FIG. 2). The setting of the multi-cavity arrangement form in the multi-cavity graphic data 24 is performed with the proper position of the original plate 5 (in this example, the lower left corner of the original plate 5 in FIG. 2) as the origin (original plate origin) 5a.

Next, the main processor 25 of the NC data creating apparatus uses a common tool locus including scoring tool locus data and cutting tool locus data whose coordinate reference is an appropriate search point obtained from the multi-cavity figure data 24. The data 26 is created. Then, the common tool locus data 26
From the NC for scribing by the post processor 27 of the scribing machine
C data 28 is obtained and NC data 3 for cutting is provided by the post processor 29 of the NC frame planar gas cutting machine.
Get 0.

By the way, as will be described later, the scoring process using the NC data for scoring is performed using the front surface of the original plate 5 as a processed surface, and the cutting process using the NC data for cutting is performed using the back surface of the original plate 5 as a processed surface. The NC data for use is mirror-converted (coordinates rotated) by the macro function of the NC frame planar gas cutter to make the coordinate system coincide with the NC data for ruled lines. It is created only for individual form.

In the scoring process, the master plate 5 is set on the surface plate of the NC scoring machine with the surface of the master plate 5 as the processing surface (upper surface), and the NC scoring data for the scoring is read. By the machine, on the surface of the original plate 5, the marking line 4a for welding set in the multi-piece drawing graphic data shown in FIG.
Burn the ruled line that matches the.

When the marking process is completed, the welding process is started. That is, the attachment plates 4 ... Are temporarily welded to the surface of the original plate 5 in accordance with the markings formed in the marking process, and then the attachment plates 4 ... Are main-welded by a multi-electrode automatic welding machine, and the attachment plates 4 are attached as shown in FIG. The original plate 5 obtained by welding the plates 4 ... Is obtained. When the welding process is completed, the original plate 5 on which the attached plates 4 are welded is press-corrected by a panel correction device or the like to remove the welding strain generated in the welding process. By welding the attachment plates 4 to the large original plate 5, the welding distortion becomes smaller than that in the conventional case where the attachment plate is welded to a small substrate.
It can be easily removed in the straightening process.

Then, the original plate 5 from which the welding distortion has been removed (corrected) is used as a working surface (upper surface) on the back surface (the surface on which the attached plates 4 are not welded) of the NC frame planar gas cutting machine. After setting on the surface plate, the cutting process by the NC flame planar gas cutting machine is started.

That is, as shown in FIG. 4, holes 3 ... Are formed in the original plate 5 to which the attached plates 4 are welded by the NC frame planar gas cutting machine in which the NC data for cutting is read (cutout of the holes 3). At the same time, each substrate 2 is cut along the outer shape of each substrate 2 and each substrate 2 (the substrate 2 to which the attached plate 4 is welded, that is, the vertical rib 1) is cut out from the original plate 15. The cutting process (cutting of the hole 3 and the substrate 2) is performed after the NC data for cutting is mirror-converted by the macro function of the NC frame planar gas cutter. That is, the N that has read the cutting NC data
The C frame planar gas cutting machine finds a search point on the original plate 5, reads the coordinate value of this search point, and rotates the coordinates (mirror conversion) by the macro function of the NC frame planar gas cutting machine to set the machine coordinate system to NC. The cutting process is performed by the NC frame planar gas cutting machine after matching it with the score machine.

Through the steps from the marking process to the cutting process, the vertical ribs 1 ... Welded structure plate members shown in FIG. 5 are mass-produced with high working efficiency and high accuracy (7 in this example). can do. That is, the entire manufacturing process of the welded structure plate member 1 from the marking process to the cutting process can be performed on the line for each original plate. The handling work and the like can be performed easily and efficiently, and the work efficiency can be significantly improved.

FIGS. 6 to 9 show a second embodiment, which relates to an example in which the method of the present invention is applied to the case where a large number of horizontal members 11, which are constituent members such as bridge girders of bridges, are manufactured. . As shown in FIG. 9, this lateral structure 11 has a plurality of holes 13 ...
It is a welded structural plate member having a T-shaped cross section formed by welding an attached plate (web of the lateral structure 11) 14 to the surface of the substrate (flange of the lateral structure 11) 12 having. The substrate 12 and the attachment plate 14 are rectangular in shape, and the attachment plate 14 is parallel to the first and second outer peripheral edges 12a and 12b extending in the longitudinal direction of the substrate 12 and has both end edges extending in the width direction of the substrate 12. Third and fourth
In a state of being located slightly inward of the outer peripheral edges 12c and 12d,
It is welded to the surface of the substrate 12.

According to the present invention, the horizontal structure 11 as the welded structure plate member is manufactured through the following drilling process, welding process, original plate correcting process and cutting process. As will be described later, the drilling process is performed by an NC girder drilling machine having a marking function and includes a welding line marking process. The welding process includes an assembly process for temporarily welding the attachment plates 14 ... It consists of a main welding process of performing the main welding of the attached plate 14 with a multi-electrode automatic welding machine, and the cutting process includes a first cutting process with an NC laser cutting machine having a marking function and a second cutting process with a frame planar gas cutting machine. Become.

When starting these steps, the N for NC machine tools (NC girder drilling machine and NC laser cutting machine) which perform the drilling and cutting steps in advance is started.
C data is created. First, a method of creating this NC data will be described.

That is, the NC data is created by a well-known NC data creating device according to the procedure shown in FIG. First, the multi-cavity processing unit (CAD
Etc. 41, the multi-cavity drawing data 44 is created from the attribute data (original size shape) 42 of the original plate 15 which is a rectangular metal plate and the attribute data (original size shape, hole position, attached plate welding position) 43 of the substrate 12. This graphic data 44 includes the surface shape of the original plate 15 and the surface shape of the substrate 12 (the welding line (scoring line) 14a of the attached plate 14 is formed) and the original plate 1.
5 is CAD data and the like showing the multiple-cavity arrangement form of the plurality of substrates 12 on the surface of No. 5, and is created in consideration of welding distortion. As shown in FIG. 7 (A), the multi-cavity arrangement configuration is such that the first and second outer peripheral edges 12a and 12b are located on the same straight line in the lateral direction of the original plate 15 (the longitudinal direction of the original plate 15, A plurality of substrates 12 arranged in parallel in the left-right direction in FIG. 7 are set to extend in the vertical direction of the original plate 15 (the width direction of the original plate 15 and the vertical direction in FIG. 7). The setting of the multi-cavity arrangement pattern in the multi-cavity graphic data 44 is performed with the proper position of the original plate 15 (in this example, the lower left corner of the original plate 15 in FIG. 7) as the origin (original plate origin) 15'a.

Next, the main processor 45 of the NC data creating apparatus corrects (rearranges) the multi-cavity form in the graphic data 44 as shown in FIG. 7B, and then the corrected multi-cavity graphic data. (Hereinafter referred to as "corrected figure data") 44a obtained as a search point 2
Tool hole data for drilling with two holes (for example, the hole 13'a closest to the original plate origin 15'a and the hole 13'b farthest from the original plate origin 15'a as shown in FIG. 7) as the coordinate reference, Common tool locus data 46 including welding marking line tool locus data and cutting tool locus data is created.

That is, as shown in FIG. 7 (B), the pattern of the multiple pieces of the graphic data 44 is taken from the substrate 12 ...
In the width direction of the substrate 1 adjacent to each other in the width direction
Corrected so that a gap 16 corresponding to the cutting allowance by the flame planar gas cutter is formed between 2 and 12 (relocation)
To do. The width of the gap 16 (vertical width in FIG. 7B) is
When the torch of the frame planar gas cutting machine passes through this, the first outer peripheral edge 12a and the second outer peripheral edge 12b located on both sides of the gap 16 are cut simultaneously (actual size is about 1 mm). Is set. Further, in addition to such correction, the substrates 12 ... Are moved in the longitudinal direction of the original plate 15 so that the third and fourth outer peripheral edges 12c, 12 of each substrate 12 are moved.
d and the third and fourth outer peripheral edges 12 of the substrate 12 adjacent to d
The corrected graphic data 4 shown in FIG. 7B is corrected (rearranged) so that c and 12d are displaced in the longitudinal direction of the original plate 15.
4a is obtained. In addition, in the multi-cavity form in the corrected graphic data 44a, the welding lines 14a ... Of the substrates 12 arranged in parallel in the longitudinal direction of the substrate 15 are positioned on the same straight line.

Then, the common tool locus data 46 including the tool locus data for drilling and the tool locus data for cutting is created by the main processor from the corrected graphic data 44a thus rearranged in the multi-cavity form. The common tool locus data 46 is based on the search points 13'a and 13'b as coordinates, and the tool locus data for drilling includes laser locus tool locus data for drilling the holes 13 ... It includes welding line marking tool trajectory data for forming (baking) welding scoring lines 14b (see FIG. 8A) that coincide with the 12 welding lines 14a on the surface of the original plate 15. In addition, the cutting tool trajectory data includes
In addition to laser cutting tool trajectory data for cutting the third and fourth outer peripheral edges 12c, 12d of each substrate 12, score lines 17a, 1 for the torch path of the frame planar gas cutting machine.
The tool line data for cutting line scoring for forming (baking) 7b, 17c, 17d is included. In the cutting line ruled tool trajectory data, as shown in FIG. 7C, the first and second outer peripheral edges 12a, 12b of the substrates 12 ...
A torch path that cuts off (path through which the torch center passes)
Is set, and the two torch paths set at both ends in the width direction of the original plate 15 are dataized by a series of long scribe lines 17a and 17b extending from the start end portion to the end portion of the original plate 15. Substrate group 12 that is arranged in a row in the width direction of 15
.., 12, ..., That is, the torch path set in the gap 16 is common, and is made into data by the short scribe lines 17c, 17d showing only the start end portion and the end portion thereof. Further, the laser cutting tool trajectory data is shown in FIG.
As shown in (D), the first and second outer peripheral edges 12a, 12b to be cut by the frame planar gas cutter are erased, and the laser cutting paths 18c, which coincide with the third and fourth outer peripheral edges 12c, 12d, Only 18d is converted to data. Then, from the common tool locus data 46 created in this way, the post processor 4 of the NC girder drilling machine.
NC data for drilling by 7 (including tool trajectory data for laser drilling and tool trajectory data for welding line marking) 4
8 and NC laser cutting machine post processor 4
The cutting NC data (including the laser cutting tool locus data and the cutting line ruled tool locus data) 50 is obtained from 9. By the way, in the cutting step, as described later,
Since the back surface is set on the surface plate with the back surface being the processing surface (upper surface), the NC data for cutting is originally the original plate 1.
Although it should be created by the graphic data for the multi-cavity pattern on the back surface of No. 5, in this example, it is created and cut by the graphic data 44, 44a for the multi-cavity pattern on the front surface of the original plate 15 as described above. When performing the process, mirror conversion (coordinate rotation) is performed by the macro function of the NC laser cutting machine. That is, the cutting NC data is mirror-converted so as to match the coordinate system with the drilling NC data at the time of cutting processing, and is the same as the one created by the graphic data of the multi-cavity form on the back surface of the original plate 15. Becomes Note that FIG. 7 is an analog display of the contents of the graphic data 44, 44a (a multi-piece form on the surface of the original plate 15).

In order to manufacture the welded structure plate member 11 which is the vertical rib of the composite floor plate, first, the drilling process by the NC girder drilling machine and the welding line marking process are performed. That is, the surface of the original plate 15 is processed (upper surface).
After setting on the surface plate of the NC girder punching machine, the NC girder punching machine is caused to read the NC data for punching, and as shown in FIG.
And the marking lines 4b for welding are formed (baked) on the surface. In addition, among the holes 13 formed in the original plate 5, the lower left corner point 15 of the original plate 15 shown in FIG. 8 (A).
The closest thing 13a and the farthest thing 13b from a (corresponding to the original plate origin 15'a) correspond to the search points 13'a and 13'b, and are used as search points in the cutting step described later. To be done.

When the drilling process is completed, the welding process is performed. That is, after performing the assembly process of temporarily welding the attachment plate 14 to the original plate 15, the attachment plate 1 is processed by the multi-electrode automatic welding machine.
The main welding step of performing the main welding of 4 is performed. In the welding process, the attachment plate 14 is welded to the surface of the original plate 15 according to the welding score lines 14b formed on the original plate 15.

When the welding process is completed, the original plate 15 to which the attached plates 14 have been welded is press-corrected by a panel correction device or the like to remove welding distortion.

The original plate 15 from which the welding distortion has been removed (corrected) is used as a surface plate of the NC laser cutting machine with the back surface (the surface where the attached plates 14 ... Are not welded) being the processing surface (upper surface). No. 1 by the NC laser cutting machine after setting
Start the cutting process.

In the first cutting step, the NC laser cutting machine that reads the cutting NC data reads the search point holes 13a, 13 from the holes 13 formed in the original plate 15.
After finding b, the coordinate values of the search point holes 13a and 13b are read, the coordinates are rotated (mirror conversion) by the macro function of the NC laser cutting machine, and the machine coordinate system is made to match the NC girder drilling machine. , NC laser cutting machine. That is, as shown in FIG.
The portions corresponding to the third and fourth outer peripheral edges 12c and 12d of 2 are cut along the laser cutting paths 18c and 18d.

By the way, in the first cutting step, a cutting line extending in the width direction of the original plate 15 (laser cutting path 18c,
The cutting line along 18d is independent in the width direction as shown in FIG. 8 (B), so that the original plate 15 is not divided by the cutting process by the NC laser cutting machine described above.
The integrity of the original plate 15 is ensured.

Further, in the first cutting step, the original plate 15
As shown in FIG. 8C, on the back surface of the sheet, the score lines 17a, 17b, 17c ..., 17d ... Corresponding to the torch path described above.
Is formed (baked).

When the first cutting step is completed, the original plate 15 is transferred from the surface plate of the NC laser cutting machine to the surface plate of the frame planar gas cutting machine by a handling means such as a crane, and the surface plate concerned. After setting the back surface of the original plate 15 as a processed surface (upper surface), a second cutting process by a frame planar gas cutting machine is performed. That is, a predetermined number of torches are run in the longitudinal direction of the original plate 15 so that the centers thereof pass over the score lines 17a, 17b, 17c ..., 17d ... Formed on the back surface of the original plate 15, and each substrate 12 is moved. , 12b ... are gas-cut to cut out each substrate 12 (the substrate 12 to which the attached plate 14 is welded, that is, the horizontal structure 11) from the original plate 15.

From such a punching process to a cutting process (first
9 and the second cutting step).
The welded structure plate member (vertical rib of the synthetic floor plate) 11 shown in
As in the first embodiment, it is possible to mass-produce (9 in this example) with high work efficiency and high precision.

By the way, the present invention is not limited to the above-mentioned embodiments, but can be appropriately improved and changed without departing from the basic principle of the present invention.

That is, in the above-described second embodiment, the cutting process is divided into the first cutting process by the NC laser cutting machine and the second cutting process by the frame planar gas cutting machine. The multi-cavity is composed of first and second outer peripheral edges 12a and 12b formed by two parallel straight lines of the substrate 12 and third and fourth outer peripheral edges 12c and 12d connecting between both ends thereof. Third and fourth outer peripheral edges 12 as long as the outer peripheral shape is
The present invention can be applied regardless of whether c and 12d are straight lines or non-straight lines such as curved lines. In the second embodiment, the NC girder punching machine and the NC laser cutting machine having the marking function are used to perform the marking in the punching step and the cutting step.
As in the first embodiment, it may be performed by a dedicated NC marking machine.

Further, in the second embodiment, the cutting of the portions corresponding to the third and fourth outer peripheral edges 12c and 12d of each substrate 12 is performed by a portable gas cutting machine or the like, not by an NC laser cutting machine. You may make it to do so. That is, in the cutting step, first, similar to the second cutting step, the first and second outer peripheral edges 12a and 12d of each substrate 12 are cut by the frame planar gas cutting machine, and then the original plate 15 is cut into the frame planar gas. While being set on the surface plate of the cutting machine, the portions corresponding to the third and fourth outer peripheral edges 12c and 12d of each substrate 12 are cut by a portable gas cutting machine or the like. By the way, in the second embodiment,
In order to handle the original plate 15 cut by the NC laser cutting machine in units of original plate to the surface plate of the frame planar gas cutting machine, the third and fourth outer peripheral edges 1 of each substrate 12 are processed.
The cutting lines (laser cutting paths 18c and 18d) for cutting 2c and 12d are devised so as to be different as shown in FIG. 8 (B), but as described above, following the cutting by the frame planar gas cutting machine, On a fixed plate (a plate of a frame planar gas cutting machine), the 3rd and 4th of each substrate 12
When cutting (separating) corresponding portions of the outer peripheral edges 12c and 12d with a portable gas cutting machine or the like, such a device is unnecessary. For example, in the case of creating the corrected graphic data 24a shown in FIG. 7B, each substrate 12 and the substrate 12 adjacent thereto in the width direction of the original plate 15 are provided with their third or fourth outer peripheral edges 12c, 12d. It is not necessary to rearrange so that they are not on the same straight line.

In the method of the present invention, a welded structure plate member having no holes 3 and 13 or a welded structure plate member obtained by welding a plurality of attached plates is manufactured, or a plurality of welded structure plate members having different shapes are manufactured. Also in the case of performing, similarly to each of the above-described embodiments, it can be suitably applied.

[0039]

As can be understood from the above description, according to the method of the present invention, it is possible to carry out the multi-piece substrate picking and the welding of the attached plates in series on a line basis for each original plate.
It is possible to efficiently perform mass production of welded structure plate members. Moreover, since the attached plate is not welded to the substrate but is welded to the original plate from which a large number of substrates are taken, the welding distortion is small and the working accuracy of the welded structure plate member can be greatly improved.

[Brief description of drawings]

FIG. 1 is a flowchart showing a procedure for creating NC data according to a first embodiment.

FIG. 2 is an analog display diagram of multi-cavity graphic data required for creating the NC data.

FIG. 3 is a plan view (surface view) of an original plate showing a welding process in the first embodiment.

FIG. 4 is a rear view (back side view) of the original plate showing a punching step and a cutting step in the first embodiment.

FIG. 5 is a plan view showing a welded structure plate member (longitudinal rib) in the first embodiment.

FIG. 6 is a flowchart showing a procedure for creating NC data according to the second embodiment.

FIG. 7 is an analog display diagram of multi-cavity graphic data, corrected graphic data, and tool trajectory data required for creating the NC data.

FIG. 8 shows each step in the second embodiment, (A) is a plan view (surface view) of a master plate showing a scoring step and a punching step, and (B) is a first cutting step. 2C is a rear view (back side view) of the original plate, and FIG. 6C is a rear view (back side view) of the original plate showing a marking process.

FIG. 9 is a plan view showing a welded structure plate member (horizontal structure) according to the second embodiment.

[Explanation of symbols]

1 ... Welding structure plate member (vertical rib), 2, 12 ... Substrate, 3,
13 ... Hole, 4, 14 ... Attached plate, 5, 15 ... Original plate, 11 ...
Welded structure plate member (horizontal structure), 12a ... First outer peripheral edge, 12b
... 2nd outer peripheral edge, 12c ... 3rd outer peripheral edge, 12d ... 4th outer peripheral edge.

Claims (4)

[Claims] 1. A method for producing a welded structure plate member by welding an attachment plate to a surface of a substrate, which corresponds to an attachment plate welding position of a plurality of substrates to be taken on the surface of a metal original plate. A welding process of welding the attached plate at the original plate position, a straightening process for performing a straightening process on the original plate to which the attached plate has been welded for the purpose of removing welding distortion, and a cutting process of cutting out each substrate from the straightened plate. A method for manufacturing a welded structure plate member, comprising: 2. The method for producing a welded structure plate according to claim 1, wherein in the cutting step, a plurality of substrates are simultaneously cut out from the original plate by a numerically controlled frame planar gas cutting machine. 3. The substrate has an outer peripheral shape composed of first and second outer peripheral edges formed by two parallel straight lines and third and fourth outer peripheral edges connecting between both ends thereof. In one case, the cutting step includes a first cutting step of cutting the third and fourth outer peripheral edges of the substrate by a numerically controlled laser cutting machine, and a first cutting step of cutting the first and second outer peripheral edges of the substrate after the completion of the first cutting step. The second cutting step of cutting with a frame planar gas cutting machine is separated.
A method for manufacturing a welded structure plate member described in. 4. When the substrate has one or a plurality of holes, the punching step of performing the punching process at the original plate position corresponding to the hole position of each substrate from which a plurality of original plates are to be cut is cut. Characterized by performing before the process,
A method for manufacturing a welded structure plate member according to claim 1, claim 2, or claim 3.