JP6931448B2 - A recording medium in which a method for automatically generating weld information and a program for realizing it are recorded. - Google Patents

Description

The present invention relates to a recording medium in which a method for automatically generating weld information and a program for realizing the method are recorded, and more specifically, each member uses 3D data created for ship design. The present invention relates to a method of examining a portion to be welded and automatically generating welded portion information about the position and length of the welded portion, and a recording medium in which a program for realizing the method is recorded.

Shipbuilding and offshore plant manufacturers develop and use optimization work and modules in collaboration with shipbuilding CAD programs to extract drawings and production information and utilize them in shipbuilding for the advancement of ship design. There is.

In shipbuilding and construction of marine plants, all members are connected and connected by welding work, and depending on the size of the ship or marine structure, it is not necessary for welded parts with a large length. Destructive inspection is carried out, and construction is carried out by a method that obtains approval from the shipowner and ship class.

Therefore, all vessels and offshore plants to be built carry out non-destructive inspections on all welded parts to ensure quality, and require the shipowner's approval for the pre-inspected parts to be welded.

Therefore, in order to obtain the shipowner's approval for the preliminary inspection, it is necessary to submit a weld inspection sheet (sheet) that matches the structural detailed drawing of the model to be built, so the shipyard collects information on welding. For this reason, in many cases, for shipbuilding and offshore plant structures of 500 blocks or more, a person directly checks the welding information and prepares an inspection sheet by collecting the welded parts in a list format.

Since such a process is performed manually by a person, it is inconsistent because it is performed by subjective experience, which is influenced by individual judgment criteria when confirming the welded part and information.

In addition, when manually creating information on welded parts at 2000 or more locations for one hull block, it takes a lot of time to create, and additional work process hours occur due to omission of creation and creation error. , The shipyard can waste a lot of time and money.

Korean Publication No. 10-2011-0049412 presents a method for extracting the shape information of the hull block, and Korean Publication No. 10-2013-0117284 describes the arrangement modeling of the welding line of the ship. Although a method has been presented, a technique relating to a method for automatically generating weld information such as the position and length of a weld for inspecting a weld as described above without relying on a person has been presented. No.

Korean Patent Publication No. 10-2011-0049412 Korean Patent Publication No. 10-2013-0117284

The present invention was devised from such a viewpoint, and an object of the present invention is to use welding inspection information used at a welding inspection site such as a shipyard as a design modeling data for a shipbuilding and a hull of an offshore plant. It is an object of the present invention to provide a recording medium in which a method for automatically generating weld information and a program for realizing the method are recorded, which can be extracted from and automatically generated.

The method for automatically generating weld information of the present invention for achieving the above object is a first step of preparing modeling data in which a large number of members are arranged with a welding gap from each other, and a maximum welding in the modeling data. A second step of forming an extension portion in which the surface of each member is extended outward by an amount corresponding to a set value larger than the gap, and an overlapping portion in which the extension portion formed by the second step overlaps with an adjacent member are extracted. It is characterized by including a third step of performing the process and a fourth step of generating welded portion information regarding the welded portion of the member by using the superposed portion as a welded portion.

Another feature of the method for automatically generating weld information of the present invention is that, in the second step, the extension portion is formed by extending from a surface of each member in a direction perpendicular to the surface. ..

Another feature of the method for automatically generating welded portion information of the present invention is that the welded portion information includes the length of the welded portion and the length of the superimposed portion is the length of the welded portion.

Further, in the method for automatically generating welded portion information of the present invention, in performing the fourth step, the overlapping portion is generated on either one end or the other end on a specific surface of the surfaces of each member. Another feature is that when the length of the superposed portion along the longitudinal direction of the specific surface is less than 10% of the total length of the specific surface, the superposed portion is excluded from the welded portion.

Another feature of the present invention is to provide a recording medium in which program data for realizing the method is recorded and can be read and executed by a computer processor.

According to the method for automatically generating welded portion information of the present invention described above, when manufacturing a ship or the like, a person creates inspection information about the welded portion of the corresponding block to be constructed while checking the design drawings one by one. Can be generated automatically.

This eliminates the loss of time and cost due to the manual creation of inspection information for many welds, and the confusion of inspection work due to omissions and errors.

Further, according to the method for automatically generating welded portion information of the present invention, a superposed portion (R) generated by extending each member is generated at either one end or the other end, and the superposed portion (R) is generated. ) Is less than 10% of the total length of the specific surface, the overlapping portion (R) can be excluded from the welded portion.

As a result, it is possible to eliminate the error that the welded portion information is automatically generated even though the welded portion does not exist on the specific surface of the member.

It is a block flowchart which sequentially shows the automatic generation method of the welded part information which concerns on embodiment of this invention. It is an example of a review file (RVM) in the method of automatically generating welded portion information according to the embodiment of the present invention, and morphological analysis data thereof. It is a arrangement state diagram of the member for demonstrating the automatic generation method of the weld part information which concerns on embodiment of this invention. It is a perspective explanatory view explaining the process of forming an extension part in a member by the method of automatically generating weld part information which concerns on embodiment of this invention. It is sectional drawing explaining the process of forming an extension part in a member by the automatic generation method of the weld part information which concerns on embodiment of this invention. It is explanatory drawing which shows the generation state of the superposed part removed from the welded part by the automatic generation method of the welded part information which concerns on embodiment of this invention. It is a table which illustrates the data which added the welding part information for each member together with the member name which constitutes a block in the method of automatically generating the welding part information which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The method for automatically generating weld information according to the embodiment of the present invention is based on the first step of preparing 3D modeling data in which a large number of members are arranged with welding gaps from each other and the maximum welding gap in the modeling data. The second step of forming the extension portion (E) in which the surface of each member is extended outward by the amount corresponding to the large set value (s) and the extension portion (E) formed by the second step are adjacent to each other. It includes a third step of extracting a superposed portion (R) overlapping the member and a fourth step of generating welded portion information regarding the position and length of the welded portion of the member by using the superposed portion (R) as a welded portion. ..

With reference to FIG. 1, in the first step, 3D modeling data in which a large number of members are arranged with welding gaps from each other is prepared (step S10).

In a 3D CAD program for ship design, for example, AVEVA MARINE CAD products manufactured by AVEVA, data is extracted in a review file (RVM) format, which is a primitive data format for blocks and members constituting the ship.

The step of preparing the 3D modeling data in the first step includes extracting the data in the review file (RVM) format.

FIG. 2 displays an example of such a review file (RVM) and its morphological analysis information.

In such review file (RVM) format primitive data, all members are configured to utilize surfaces to generate 3D shapes. For example, in the case of the plate-shaped member 10 of FIG. 3, one plate-shaped member is represented by a total of six surfaces including four side surfaces 13, 14, 15, and 16 together with both side plate surfaces 11 and 12.

In addition, in the primitive data in the review file (RVM) format, in the case of a curved part or a complicated shape, the surface is separated into small pieces and expressed by a method of embodying the member, and the object name and the position of the object are expressed in a text format. It internally contains information such as the unique number and color of the member.

In such a review file (RVM) format primitive data, a plurality of members connected to each other to form a hull block are not brought into contact with each other, and a welding cap (at a position where welding is performed) is formed at a portion where a welding bead is formed. By setting the given spacing widths t1 and t2, a large number of members are separated from each other.

In the second step, an extension portion E in which the surface of each member is extended outward by an amount corresponding to a set value s larger than the maximum welding gap in the modeling data is formed (step S20).

Since each member is composed of surfaces, it is possible to confirm that the welded portion is located at the portion overlapping with the adjacent member by enlarging the surface of each member, and examine and confirm the welded portion. Therefore, in the second step, an extension portion E for extending the surface of each member to the outside is formed.

The maximum weld gap is information contained in the extracted source data in review file (RVM) format, and all weld gaps because the weld caps given to each member may be different from each other. And set the largest welding gap among them as the maximum welding cap.

The maximum weld gap may be provided by the designer along with 3D modeling data for ship design.

Using the set maximum welding gap, set a larger value, for example, a set value s that is 1.2 to 1.5 times the maximum welding gap, and each set value s corresponding to the set value s. An extension portion E is formed by extending the surface of the member to the outside.

4 and 5 show a process of forming the extension portion E in a state where the members forming the ship block are arranged as shown in FIG. 3, and each surface of the target member corresponds to the set value s. Extend by the amount.

For example, in the case of the specific plate-shaped member 10 of FIG. 3, if the six surfaces constituting the plate-shaped member 10 are extended by the amount corresponding to the set value s as shown in FIGS. 4 and 5, the welding values t1 and t2 are exceeded. Since it is significantly extended, an overlapping portion R that overlaps with the adjacent members 20 and 30 with the welding gaps t1 and t2 in between is generated.

In the second step, the process of forming the extension portion E in which the surface of each member is extended outward by the amount corresponding to the set value s larger than the maximum welding gap is the entire target block in which the welding portion information is automatically generated. Performed on the member.

The extension portion E is formed by extending from the surface of each member in a direction perpendicular to the surface.

That is, when forming the extension portion E, it can be extended from one surface to the outside at various angles, but since the direction in which the weld bead is formed can be said to be the vertical direction from each surface to the outside, it is extended. By setting the directions in which the portions E are formed to be perpendicular to each surface, the welding length described later can be calculated more accurately, and the welded adjacent members can be smoothly overlapped with each other. The possibility of overlapping with other members that are not welded can be eliminated.

After the second step is completed, in the third step, the superposed portion R on which the extension portion E formed by the second step overlaps with the adjacent member is extracted (step S30).

The superimposing portion R is a portion in which an extension portion E extended from each member invades an adjacent member (for example, a portion in which the plate-shaped member 11 in FIG. 5 invades the adjacent members 20 and 30) and is three-dimensional. It can be seen that the extension portion E of the specific member and other members both occupy a predetermined area in the space.

Such a superposed portion R is discriminated, and the superposed portion R generated in each member is confirmed and extracted.

After that, in the fourth step, the welded portion information regarding the position and length of the welded portion of the member is generated by using the superposed portion R as the welded portion (steps S40 to S70).

That is, at the position where the extracted overlapping portion R is generated, it means that the welding gaps t1 and t2 set at the time of design are formed, so that the welded portion (welding bead) is generated at the time of building the ship. Corresponds to the part.

Since the extension portion E having a width slightly larger than the welding gaps t1 and t2 is formed on each surface, the overlapping portion R is generated at the position where the welding gap is formed, so that the designed welding gap length and the overlapping portion are formed. The length of R is formed to be the same.

Therefore, it can be said that the welded portion is generated at the portion where the superposed portion R is generated, with the superposed portion R as the welded portion, and it can be said that the length of the superposed portion R is the length of the generated welded portion.

Therefore, the superposed portion R is determined as the welded portion and the welded portion information is generated (step S40).

The welded portion information includes position information in which a welded portion is generated in each member and length information of the welded portion, and the welded portion position information includes a member name of a specific member, for example, a specific plate-shaped member. At the same time, it can be displayed as upper end T, lower end B, right side R, left side L, etc. based on the position of the welded portion in the member.

Since one welded portion is shared by the members to be welded to each other on both sides, the position information of each member is different. In order to make the generated weld information more concise, it is preferable that one weld be prioritized so that it is generated on only one of the two members.

For example, a rule that the member that can display the upper end T as the upper end T with priority over the lower end B contains the welded portion information, and the member that can display the right side R as the right side R with priority over the left side L contains the welded portion information. Is adopted.

Welded part information such as the position of the welded part and the length of the welded part is generated for each member, so that the welded part information is additionally included in the list of many members included in one block constituting the ship. In addition, the data is generated in list format.

That is, the name of the member constituting the block by including the welded portion information regarding the position, length, etc. of the welded portion in the member so as to correspond to the member in a large number of member lists for each block constituting the hull. At the same time, data with welded portion information for each member is generated, and can be output as a welded portion inspection sheet as shown in FIG.

As a result, when manufacturing a ship, in order to obtain approval for prior inspection from the ship owner, inspection information for the welded part of the block to be constructed is automatically produced without the need for a person to check the design drawings one by one. Can be generated and submitted.

On the other hand, among the superposed portions R generated on the surfaces of each member, there may be a superposed portion R that needs to be excluded from the welded portion.

With reference to FIG. 6, when the specific surface 66 of the peripheral surface of the plate-shaped member 60 is inclined so as to form an obtuse angle with the other adjacent surface 65 to be welded, the welded portion is actually formed on the specific surface 66. The superposed portion R1 can be generated on a surface that does not exist in the above-mentioned surface or when the process by the above-mentioned method proceeds.

That is, when the extension portion E is formed from the specific surface 66 by the amount corresponding to the set value s, the overlapping portion R1 as shown in FIG. 6 is generated in the lower end region of the specific surface 66.

As a result, if the superposed portion R1 is not excluded from the welded portion, there is a problem that welded portion information is also generated on the specific surface 66 of the inclination of the plate-shaped member.

Therefore, in the fourth step, the superimposing portion R is generated on either one end or the other end on the specific surface 66 of the surfaces of the members, and the overlap portion R is generated along the longitudinal direction of the specific surface. When the length c of the superimposing portion R1 is less than 10% of the total length of the specific surface 66, the superimposing portion R1 is excluded from the welded portion.

Normally, the superimposing portion R generated in the lower end region of the inclined specific surface 66 as shown in FIG. 6 has a slight superimposition region, and is removed using 10% of the total length of the specific surface 66 as a criterion for judgment. It may be.

The present invention is a method for examining a portion where each member is welded and automatically generating welded portion information about the position and length of the welded portion when a shipyard or an offshore plant maker designs a ship. It can be used.

Claims (4)

The first step of preparing modeling data in which a large number of members are arranged with welding gaps from each other,
The second step of forming the extension portion (E) in which the surface of each member is extended outward by the amount corresponding to the set value (s) larger than the maximum welding gap in the modeling data, and the second step.
A third step of extracting an overlapping portion (R) in which the extension portion (E) formed by the second step overlaps with an adjacent member,
A fourth step of generating welded portion information regarding the position of the welded portion of the member with the superposed portion (R) as the welded portion is included.
In the fourth step,
Of the surfaces of each member, the overlapping portion (R) is generated on either one end or the other end on a specific surface inclined so as to form an obtuse angle with the other adjacent surfaces to be welded. When the length (c) of the superimposing portion (R) along the longitudinal direction of the specific surface is less than 10% of the total length of the specific surface, the superimposing portion (R) of the specific surface is removed from the welded portion. A method for automatically generating weld information, which is characterized by excluding. The method for automatically generating welded portion information according to claim 1, wherein in the second step, the extension portion (E) is formed by extending from a surface of each member in a direction perpendicular to the surface. .. The method for automatically generating welded portion information according to claim 1, wherein the welded portion information includes the length of the welded portion, and the length of the superposed portion is defined as the length of the welded portion. A recording medium on which program data for realizing the method according to any one of claims 1 to 3 is recorded, which can be read and executed by a computer processor.

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