Method and system for identifying trepanning mode of ship structural parts
By judging the nesting method of ship structural parts based on the modeling method and the specific characteristics of structural parts, the problem of difficulty in distinguishing slat parts is solved, and rapid identification and efficient design are achieved.
Patent Information
- Application Number
- CN202411601367.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-03-14
AI Technical Summary
During the nesting process of ship structural parts, the characteristics of the slat parts are not clear enough, which makes it difficult to distinguish, and requires manual distinction, which increases manual labor intensity and reduces design efficiency.
By dividing ship structural parts into plate parts and profile parts according to modeling methods, and determining whether they are slat parts based on their length, width, aspect ratio and indentation conditions, thereby determining the nesting method.
It realizes rapid identification of the material housing of ship structural parts, simplifies operations, improves design efficiency, and can operate in parallel, and improves execution speed.
Smart Images
Figure CN119622917A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of ship design, and in particular, to a method and system for identifying nesting methods of ship structural parts. Background Art
[0002] The nesting methods of ship structure parts can be divided into plate nesting and profile nesting according to the different nesting parent materials. Among them, plate nesting is further divided into plate CNC nesting and plate gantry nesting according to the different cutting methods. There are two modeling methods for ship structure parts in the modeling process, namely plate modeling and profile modeling. Therefore, when outputting the nesting file after completing the modeling, the parts need to be classified according to different nesting methods to facilitate the subsequent nesting work. Among them, plate parts and profile parts are easy to distinguish, but the characteristics of lath parts are not clear enough and are relatively difficult to distinguish. In the nesting process, they are usually distinguished manually by nesting personnel, which greatly increases the labor intensity and reduces the design efficiency. Summary of the invention
[0003] The purpose of the present application is to provide a method and system for identifying the nesting method of ship structure parts, so as to solve the problem of low efficiency in distinguishing the nesting method of ship structure parts.
[0004] In order to achieve the above objectives, this application adopts the following technical solutions:
[0005] A method for identifying a nesting mode of ship structure parts comprises: dividing ship structure parts into plate parts and profile parts according to a modeling mode; judging whether the plate parts are lath parts, and if the plate parts are lath parts, performing lath gantry nesting on the plate parts; if the plate parts are not lath parts, performing plate CNC nesting on the plate parts; acquiring the cross-sectional shape of the profile parts, and if the cross-sectional shape of the profile parts is non-rectangular, performing profile nesting on the profile parts; if the cross-sectional shape of the profile parts is rectangular, judging whether the profile parts are lath parts; if the profile parts are lath parts, performing lath gantry nesting on the profile parts; if the profile parts are not lath parts, performing plate CNC nesting on the profile parts.
[0006] In some embodiments, the process of determining whether the structural part is a slat part at least includes: determining whether the structural part is a slat part based on the length, width, aspect ratio and indentation of the structural part.
[0007] In some embodiments, the process of determining whether the structural part is a slat part based on the length, width and aspect ratio of the structural part includes: obtaining the length, width and aspect ratio of the structural part in a flat state, and if the length of the structural part is ≥3500mm, the width is ≥80mm, and the aspect ratio is ≥15, then the structural part meets the first condition of the slat part.
[0008] In some embodiments, a straight line along the length direction of the structural part and located on one side of the width direction of the structural part is set as a reference straight line; a straight line contour boundary of the part parallel to the reference straight line is a straight line boundary, and a straight line boundary whose distance from the reference straight line is greater than 0 and less than the width of the part is an indented straight line boundary. If the ratio of the sum of the lengths of the indented straight line boundaries to the length of the structural part is greater than 20%, then the structural part is indented.
[0009] In some embodiments, the modeling method of the structural part is plate modeling; if there is no indentation in the structural part, the structural part meets the second condition of the slat part, the structural part is a slat part, and the structural part is subjected to slat gantry nesting.
[0010] In some embodiments, the process of determining whether the structural part is to be profile nested includes at least: the structural part is modeled by profile modeling, and if the cross-sectional shape of the structural part is non-rectangular, determining that the structural part is to be profile nested.
[0011] In some embodiments, the cross-section of the structural part is rectangular, and whether the structural part is the slat part is determined based on whether the structural part satisfies the first condition and / or the second condition.
[0012] A second aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. When the computer program runs on a processor, the processor executes the identification method as described in the first aspect.
[0013] The third aspect of the present application provides an electronic device, comprising: at least one memory for storing programs; at least one processor for executing the programs stored in the memory, when the programs stored in the memory are executed, the processor is used to execute the identification method as described in the first aspect.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] The present application provides a method and system for identifying the nesting method of ship structure parts. The ship structure parts are first divided into plate parts and profile parts by modeling, and then the plate parts are judged whether they belong to lath parts. If they belong to lath parts, lath gantry nesting is performed; if not, plate CNC nesting is performed. For profile parts, it is only necessary to observe their cross-sectional shape. If the cross-sectional shape is non-rectangular, profile nesting is performed; if the cross-sectional shape is rectangular, it is further judged whether the profile part belongs to a lath part to determine the nesting method. This identification method can quickly identify the nesting method of ship structure parts, is simple and convenient to operate, and has wide practicality; and can be operated in parallel, which improves execution speed and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 A method for identifying the nesting mode of ship structure parts according to an embodiment of the present application is shown. DETAILED DESCRIPTION
[0018] The technical solutions of the specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings. These implementation methods are only used to illustrate the present application, but not to limit the present application.
[0019] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0020] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0021] A method for identifying a nesting mode of ship structure parts of the present application is described in detail below with reference to the accompanying drawings.
[0022] Figure 1 A method for identifying the nesting mode of ship structure parts according to an embodiment of the present application is shown, comprising the following steps:
[0023] The ship structure parts are divided into plate parts and profile parts according to the modeling method; it is judged whether the plate parts are lath parts. If the plate parts are lath parts, the plate parts are subjected to lath gantry nesting; if the plate parts are not lath parts, the plate parts are subjected to plate CNC nesting.
[0024] In one embodiment, whether the structural part is a lath part can be determined based on the length, width and aspect ratio of the structural part. Specifically, the length, width and aspect ratio of the structural part in a flat state are obtained. If the length of the structural part is ≥3500 mm, the width is ≥80 mm, and the aspect ratio is ≥15, then the structural part meets the first condition of a lath part.
[0025] The steps of obtaining the length and width of the structural parts in a flat state specifically include: for plate parts, merge the adjacent collinear straight line boundaries of the plate parts, and use the straight line along the length direction of the plate parts and on one side of the width direction of the plate parts as the reference straight line. Take each of the merged straight line boundaries in turn, and observe whether the remaining contour boundaries of the plate parts are on the same side of the straight line boundary. If on the same side, calculate the farthest distance of each point on the remaining contour boundaries from the straight line boundary and the maximum distance between the projection points of each point on the straight line boundary. Take the minimum value of the farthest distance of all points from the straight line boundary as the part width, and the maximum distance between the projection points corresponding to the part width is the part length. For profile parts, take the centroid of the profile section, offset the profile trajectory line to the centroid, obtain the neutral axis of the profile part, project all points of the profile part to the neutral axis, and the maximum curve length between all projection points is the profile length.
[0026] Furthermore, the modeling method of the structural part that meets the first condition of the slat part is judged. If the modeling method of the structural part is profile modeling, the part that meets the first condition of the slat part is a slat part. If the modeling method of the structural part is plate modeling, it is judged whether the part meets the second condition of the slat part, that is, whether the part has an indentation. If the part does not have an indentation, it is judged that the part is a slat part.
[0027] The method for judging whether there is an indentation includes: setting a straight line along the length direction of the structural part and located on one side of the width direction of the structural part as a reference straight line; the straight line contour boundary of the part parallel to the reference straight line is a straight line boundary, and the straight line boundary whose distance from the reference straight line is greater than 0 and less than the width of the part is an indentation straight line boundary, and if the ratio of the sum of the indentation straight line boundaries to the length of the structural part is greater than 20%, it is judged that the structural part has an indentation. Otherwise, the aforementioned structural part does not have an indentation. If the aforementioned structural part does not have an indentation, the structural part is a slat part, and the structural part is subjected to slat gantry nesting. If the first condition and the second condition of the above-mentioned structural part are not met, the part is not a slat part.
[0028] In one embodiment, when the modeling method of the ship structure part is profile modeling, the cross-sectional shape of the structure part is obtained. If the cross-sectional shape of the structure part is non-rectangular, the structure part is subjected to profile nesting; if the cross-sectional shape of the structure part is rectangular, it is determined whether the structure part is a lath part; if the structure part is a lath part, the structure part is subjected to lath gantry nesting; if the structure part is not a lath part, the structure part is subjected to plate CNC nesting. The steps for determining whether the structure part is a lath part are the same as those described above and will not be repeated here.
[0029] The second aspect of the present application provides a computer-readable storage medium, on which is stored a program for an identification method for determining the nesting method of ship structure parts, so that the identification method for determining the nesting method of ship structure parts provided in the first aspect of the present application is executed. As for the aforementioned computer-readable storage medium, those skilled in the art can understand that the implementation method of the aforementioned system and each unit function can be completed by hardware related to the computer program. The aforementioned computer program can be stored in a computer-readable storage medium. When the program is executed, it executes an implementation method including the aforementioned system and each unit function. The aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM or optical disk.
[0030] The third aspect of the present application provides an electronic device, comprising: at least one memory for storing programs; at least one processor for executing the programs stored in the memory. The electronic device may be a server. The electronic device comprises a processor, a memory, a network interface and a database connected via a system bus. The processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device comprises a non-volatile and / or volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the electronic device is used to communicate with an external client via a network connection. When the computer program is executed by the processor, the identification function or steps of the nesting method of ship structure parts of the present application are realized.
[0031] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.
Claims
1. A method for identifying the nesting mode of ship structure parts, characterized in that: include: The ship structure parts are divided into plate parts and profile parts according to the modeling method; Determine whether the plate part is a lath part, and if the plate part is a lath part, perform lath gantry nesting on the plate part; If the plate part does not belong to the lath part, the plate part is subjected to plate CNC nesting; Determine the cross-sectional shape of the profile part, and if the cross-sectional shape of the profile part is non-rectangular, perform profile nesting on the profile part; if the cross-sectional shape of the profile part is rectangular, determine whether the profile part is a lath part; If the profile part is a slat part, the profile part is subjected to slat gantry nesting; If the profile part does not belong to the slat part, the profile part is subjected to CNC nesting of the plate.
2. The method for identifying the nesting mode of ship structure parts according to claim 1, characterized in that: The process of determining whether the structural part is a lath part at least includes: Whether the structural part is a slat part is determined based on the length, width, aspect ratio and indentation of the structural part.
3. The method for identifying the nesting mode of ship structure parts according to claim 2, characterized in that: The process of judging whether the structural part is a lath part according to the length, width and aspect ratio of the structural part comprises: The length, width and aspect ratio of the structural part in a flat state are obtained. If the length of the structural part is ≥3500 mm, the width is ≥80 mm, and the aspect ratio is ≥15, then the structural part meets the first condition of the slat part.
4. The method for identifying the nesting mode of ship structure parts according to claim 2, characterized in that: The process of determining whether the structural part is a lath part according to the indentation of the structural part comprises: A straight line along the length direction of the structural part and located on one side of the width direction of the structural part is set as a reference straight line, a straight line contour boundary of the structural part parallel to the reference straight line is set as a straight line boundary, and a straight line boundary whose distance from the reference straight line is greater than 0 and less than the width of the structural part is set as an indented straight line boundary. If the ratio of the sum of the lengths of the indented straight line boundaries to the length of the structural part is greater than 20%, the structural part is indented.
5. The method for identifying the nesting mode of ship structure parts according to claim 4, characterized in that: The modeling method of the structural parts is plate modeling; If there is no indentation in the structural part, then the structural part meets the second condition of the slat part, the structural part is a slat part, and the structural part is subjected to slat gantry nesting.
6. The method for identifying the nesting mode of ship structure parts according to claim 4, characterized in that: The modeling method of the structural parts is plate modeling; If the structural part is indented, the structural part does not belong to the slat part, and the structural part is subjected to CNC nesting of the plate.
7. The method for identifying the nesting mode of ship structure parts according to claim 1, characterized in that: The modeling method of the structural part is profile modeling, and the process of determining whether the structural part is to be profile nested at least includes: If the cross-sectional shape of the structural part is non-rectangular, it is determined that the structural part is to be profile nested.
8. The method for identifying the nesting mode of ship structure parts according to claim 7, characterized in that: If the cross-section of the structural part is a rectangle, whether the structural part is the slat part is determined based on whether the structural part satisfies the first condition and / or the second condition.
9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program runs on a processor, the processor is enabled to perform the identification method according to any one of claims 1 to 8.
10. An electronic device, characterized in that: include: at least one memory for storing a program; At least one processor is used to execute the program stored in the memory. When the program stored in the memory is executed, the processor is used to execute the identification method according to any one of claims 1 to 8.