Method for rapidly detecting segmentation precision of bent outer plate

Abstract

The invention discloses a method for rapidly detecting segmented precision of a bent outer plate. The method comprises the following steps: (1) judging whether a segmented horizontal detection line needs to be arranged according to a BASE surface constructed in a segmented manner; (2) according to the judgment result of the above steps, setting segment horizontal detection lines on rib plates, platform plates and cabin wall plates of the segments of the bent outer plate; (3) inputting the segmented horizontal detection lines into an AM12 model in a ship construction production design stage, then converting the segmented horizontal detection lines into scribing data for manufacturing a cutting machine, and then cutting and blanking according to the scribing data; (4) detecting the levelness of a horizontal detection line by using a gradienter or a horizontal cylinder after each group is assembled in the assembling process of each rib plate, each platform plate and each bulkhead plate of the bent outer plate section; and (5) after all the groups are assembled and welded, the levelness of all the horizontal detection lines needs to be detected again. According to the invention, segmented assembly precision detection can be rapidly carried out, so that the ship construction efficiency is improved and the construction cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of curved outer plates, and particularly to a method for quickly detecting the section accuracy of curved outer plates. Background Art

[0002] The curved outer plate is a common structure in ship structures. Building a curved plate section on a jig with the curved outer plate as the BASE is a commonly used ship section construction method and is widely used in the shipbuilding industry. During the shipbuilding process, errors and deformations will occur in member cutting, member hoisting, and member assembly welding. Especially during section assembly, the superposition of these error deformations will be more obvious; to ensure the accuracy of subsequent assembly and the quality of shipbuilding, these deformation errors must be eliminated.

[0003] For a ship section built with a curved outer plate BASE, the section BASE surface is in an unconventional state (X, Y, Z planes), and it is impossible to use waterlines, rib lines, longitudinal section lines, etc. to detect the section assembly accuracy. Currently, the generally adopted detection method is to measure the three-dimensional values of multiple section hull structures relative to the section jig reference surface to detect the section accuracy. However, this detection method is complex, time-consuming and laborious, and the detection accuracy is not high. Therefore, how to quickly detect the section accuracy of curved outer plates has become a difficult problem that needs to be solved urgently at present. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method for quickly detecting the section accuracy of curved outer plates. By arranging horizontal detection lines parallel to the jig reference surface on each rib plate, platform plate, and bulkhead plate of the curved outer plate section to detect the section assembly accuracy of the curved outer plate section. After the section assembly is completed, when the horizontal detection lines on each rib plate, platform plate, and bulkhead plate are on a horizontal plane, it indicates that the section assembly accuracy is qualified; this method is time-saving and labor-saving, can quickly detect the section assembly accuracy, thus improving the shipbuilding efficiency and saving the construction cost.

[0005] To solve the above technical problem, the present invention adopts the following technical solutions: A method for quickly detecting the section accuracy of curved outer plates according to the present invention is characterized by including the following steps:

[0006] (1) Judgment: Determine whether it is necessary to set section horizontal detection lines according to the BASE surface of section construction;

[0007] (2) Set section horizontal detection lines: According to the judgment result of the above step, set section horizontal detection lines on each rib plate, platform plate, and bulkhead plate of the curved outer plate section;

[0008] (3) Marking and cutting: Input the above segmented horizontal inspection line into the AM12 model during the production design stage of shipbuilding, then convert it into marking data for the manufacturing cutting machine, and perform cutting according to the marking data, so that each rib plate, platform plate, and bulkhead plate cut out contains the horizontal inspection line;

[0009] (4) Sub-assembly and inspection of the segment: During the assembly of each rib plate, platform plate, and bulkhead plate in the curved outer plate segment, after assembling each group, use a level or a spirit level to detect the levelness of the horizontal inspection line;

[0010] (5) Secondary inspection: After the assembly and welding of each group are completed, it is necessary to detect the levelness of each horizontal inspection line again and ensure that the horizontal inspection lines of each rib plate, platform plate, and bulkhead plate are on the same horizontal plane.

[0011] Preferably, in the above step (1), segments built with the curved outer plate BASE need to be provided with segmented horizontal inspection lines.

[0012] Preferably, in the above step (1), for single-piece outer plate BASE segments with a small curvature of the outer plate, little change in the curvature of the internal structure, and relatively simple structure, segmented horizontal inspection lines may not be provided.

[0013] Preferably, in the above step (2), the method for setting the segmented horizontal inspection line is specifically as follows: According to the reference plane of the segment jig, find a horizontal plane parallel to the reference plane of the segment jig within the segment, and define the intersection lines of the horizontal plane with each rib plate, platform plate, and bulkhead plate as the segmented horizontal inspection lines.

[0014] Preferably, in the above step (2), the horizontal plane parallel to the reference plane of the segment jig needs to ensure that it intersects with each rib plate, platform plate, and bulkhead plate, and its intersection lines need to be ensured to be within the range of the two ends of each rib plate, platform plate, and bulkhead plate of the segment, so as to facilitate subsequent inspection.

[0015] Preferably, in the above step (4), during the assembly of each group, if it is found that the levelness of the horizontal inspection line deviates, it is necessary to adjust it in time to ensure that the accuracy of the finally formed curved outer plate segment meets the requirements.

[0016] Advantages of the present invention: The present invention detects the assembly accuracy of the curved outer plate segment by arranging horizontal inspection lines parallel to the reference plane of the jig on each rib plate, platform plate, and bulkhead plate of the curved outer plate segment. After the segment assembly is completed, when the horizontal inspection lines on each rib plate, platform plate, and bulkhead plate are on a horizontal plane, it indicates that the segment assembly accuracy is qualified; this method saves time and effort, can quickly detect the segment assembly accuracy, thereby improving the shipbuilding efficiency and saving the construction cost. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments described in the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0018] Figure 1 It is a flowchart of a method for quickly detecting the accuracy of a curved outer plate section of the present invention.

[0019] Figure 2 It is a schematic diagram of the curved outer plate BASE section placed on the jig of the present invention.

[0020] Figure 3 It is a schematic diagram of the marking data of the present invention.

[0021] Figure 4 It is a schematic diagram of the section assembly of the present invention. Specific Embodiments

[0022] The technical solutions of the present invention will be clearly and completely described below through specific embodiments.

[0023] A method for quickly detecting the accuracy of a curved outer plate section of the present invention, as Figures 1 to 4 shown, includes the following steps:

[0024] (1) Judgment: Determine whether to set a sectional horizontal detection line according to the BASE surface of sectional construction.

[0025] In the above step, as Figure 2 shown, the section constructed with the curved outer plate BASE needs to set a sectional horizontal detection line; however, for the single-piece outer plate BASE construction section with a small outer plate curvature, little change in the inner structure curvature, and a relatively simple structure, the sectional horizontal detection line may not be set.

[0026] (2) Set the sectional horizontal detection line: According to the judgment result of the above step, set the sectional horizontal detection line on each rib plate, platform plate, and bulkhead plate of the curved outer plate section.

[0027] In the above step, the specific method for setting the sectional horizontal detection line is as follows: According to the sectional jig reference surface, find a horizontal plane parallel to the sectional jig reference surface within the section, and define the intersection lines of the horizontal plane with each rib plate, platform plate, and bulkhead plate as the sectional horizontal detection line.

[0028] In the above step, the horizontal plane parallel to the sectional jig reference surface needs to ensure that it intersects with each rib plate, platform plate, and bulkhead plate, and its intersection lines need to ensure that they are within the range of the two ends of each rib plate, platform plate, and bulkhead plate of the section, so as to facilitate subsequent inspection.

[0029] (3) Marking and cutting: Input the above segmented horizontal detection line into the AM12 model during the production design stage of shipbuilding, and then convert it into marking data for the manufacturing cutting machine (as Figure 3 shown), and then perform cutting according to the marking data, so that each rib plate, platform plate, and bulkhead plate cut out contains a horizontal detection line;

[0030] (4) Sub-assembly and inspection: As Figure 4 shown, during the assembly of each rib plate, platform plate, and bulkhead plate in the curved outer plate segment, after assembling each group, use a spirit level or a horizontal tube to detect the levelness of its horizontal detection line;

[0031] In the above steps, during the assembly of each group, if it is found that the levelness of the horizontal detection line deviates, it is necessary to adjust it in time to ensure that the accuracy of the finally formed curved outer plate segment meets the requirements.

[0032] (5) Secondary inspection: After the assembly and welding of each group are completed, it is necessary to detect the levelness of each horizontal detection line again and ensure that the horizontal detection lines of each rib plate, platform plate, and bulkhead plate are on the same horizontal plane.

[0033] Advantages of the present invention: The present invention detects the assembly accuracy of the curved outer plate segment by arranging horizontal detection lines parallel to the reference plane of the jig on each rib plate, platform plate, and bulkhead plate of the curved outer plate segment. After the sub-assembly is completed, when the horizontal detection lines on each rib plate, platform plate, and bulkhead plate are on the same horizontal plane, it indicates that the sub-assembly accuracy is qualified; this method saves time and effort and can quickly detect the sub-assembly accuracy, thereby improving the shipbuilding efficiency and saving the construction cost.

[0034] The above-described embodiments are only described as the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various variations and improvements made by ordinary engineering and technical personnel in the field to the technical solutions of the present invention should fall within the protection scope of the present invention. The technical content claimed by the present invention has been fully recorded in the claims.

Claims

1. A method for quickly detecting the accuracy of a curved outer plate section, characterized in that It includes the following steps: (1) Judgment: Determine whether to set sectional horizontal detection lines according to the BASE surface constructed in sections. (2) Set sectional horizontal detection lines: According to the judgment result of the above step, set sectional horizontal detection lines on each rib plate, platform plate and bulkhead plate of the curved outer plate section. (3) Marking and cutting: Input the above sectional horizontal detection lines into the AM12 model in the shipbuilding production design stage, then convert them into marking data for the manufacturing cutting machine, and then cut according to the marking data, so that each rib plate, platform plate and bulkhead plate cut out contains horizontal detection lines. (4) Section assembly and inspection: During the assembly of each rib plate, platform plate and bulkhead plate of the curved outer plate section, after each group is assembled, use a level or a spirit level to detect the levelness of its horizontal detection line; (5) Secondary inspection: After all groups are assembled and welded, it is necessary to detect the levelness of each horizontal detection line again and ensure that the horizontal detection lines of each rib plate, platform plate and bulkhead plate are on the same horizontal plane.

2. The method for quickly detecting the accuracy of a bent outer plate section according to claim 1, wherein: In the above step (1), sections constructed with the curved outer plate BASE need to set sectional horizontal detection lines.

3. A method for quickly detecting the accuracy of a curved outer plate section according to claim 2, characterized in that: In the above step (1), for single-piece outer plate BASE construction sections with a small outer plate curvature, little change in the internal structure curvature, and relatively simple structure, sectional horizontal detection lines may not be set.

4. A method for quickly detecting the accuracy of a segmented curved outer panel according to claim 1, characterized in that: In the above step (2), the specific method for setting the sectional horizontal detection lines is as follows: According to the sectional jig reference surface, find a horizontal plane parallel to the sectional jig reference surface in the section, and define the intersection line of the horizontal plane and each rib plate, platform plate and bulkhead plate as the sectional horizontal detection line.

5. A method for quickly detecting the accuracy of a segmented curved outer plate according to claim 4, characterized in that: In the above step (2), the horizontal plane parallel to the sectional jig reference surface needs to ensure that it intersects with each rib plate, platform plate and bulkhead plate, and its intersection line needs to be within the range of the two ends of each rib plate, platform plate and bulkhead plate of the section, so as to facilitate subsequent inspection.

6. A method for quickly detecting the accuracy of a curved outer plate section according to claim 1, characterized in that: In the above step (4), during the assembly of each group, if it is found that the levelness of the horizontal detection line deviates, it is necessary to adjust it in time to ensure that the accuracy of the finally formed curved outer plate section meets the requirements.

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