Method for expressing ship outfitting piece manufacturing information in non-graph form

Abstract

The invention provides a method for expressing manufacturing information of a ship outfitting piece in a non-graph form. The method comprises the following steps: extracting geometric feature data and process parameters of the ship outfitting piece from a three-dimensional model; generating profile machining data according to the geometrical characteristic data, wherein the profile machining data at least comprises profile codes, length dimensions, hole opening position parameters and chamfering parameters; according to the geometric feature data, a plate nesting DXF graph is generated, wherein the DXF graph comprises plate codes, cutting path data and groove machining parameters; generating a structured data file by using the profile processing data and the plate nesting DXF graph according to a preset coding rule; carrying out data binding on the structured data file and the three-dimensional model; and outputting the bound data to a workshop production system for automatic analysis processing. According to the technical scheme, a two-dimensional drawing can be replaced, novel information expression of data-driven production is achieved, outfitting piece machining information is described through characters in a specific format, the drawing workload of designers is reduced, and the outfitting piece manufacturing efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of shipbuilding, and particularly relates to a method for expressing the manufacturing information of ship outfitting parts in a non-graphic form. Background Art

[0002] Traditional ship outfitting part manufacturing relies on two-dimensional drawings to guide production, and has the following defects:

[0003] Low design efficiency: It is necessary to manually draw complex drawings, consuming a large amount of design resources;

[0004] Complex process treatment: The workshop needs to disassemble the drawings to generate a parts list, and the process personnel need to analyze the processes again;

[0005] Poor construction fault tolerance: The information in two-dimensional drawings is easy to be misunderstood, and workers rely on experience for construction, with a high error rate;

[0006] Low automation level: It cannot be directly connected to numerical control equipment, and manual programming is required to input processing parameters.

[0007] In the prior art, although some three-dimensional modeling technologies are applied, the problem of connecting the structured expression of processing information with automated production has not been solved.

[0008] Therefore, how to provide a method for expressing the manufacturing information of ship outfitting parts in a non-graphic form, which can replace two-dimensional drawings and realize data-driven production, and use specific format text to describe the outfitting part processing information, so as to reduce the drawing workload of designers and improve the production efficiency of outfitting parts, has become an urgent technical problem to be solved. Summary of the Invention

[0009] An embodiment of the present invention provides a method for expressing the manufacturing information of ship outfitting parts in a non-graphic form, which can replace two-dimensional drawings and realize data-driven production, and use specific format text to describe the outfitting part processing information, so as to reduce the drawing workload of designers and improve the production efficiency of outfitting parts.

[0010] In an embodiment of the present invention, a method for expressing the manufacturing information of ship outfitting parts in a non-graphic form is provided, including:

[0011] S101. Extract the geometric feature data and process parameters of the ship outfitting parts from the three-dimensional model;

[0012] S102. Generate profile processing data according to the geometric feature data, and the profile processing data at least includes: profile code, length dimension, hole opening position parameter and chamfer parameter;

[0013] S103. Generate a DXF drawing for plate nesting according to the geometric feature data, and the DXF drawing includes plate code, cutting path data and bevel processing parameters;

[0014] S104. Generate a structured data file from the profile processing data and the sheet nesting DXF drawing according to a predetermined coding rule; S105. Perform data binding between the structured data file and the 3D model;

[0015] S106. Output the bound data to the workshop production system for automatic parsing and processing.

[0016] Furthermore, the method for generating the profile processing data includes:

[0017] S201. Identify the profile cross-sectional shape parameters;

[0018] S202. Extract the length of the profile center line;

[0019] S203. Mark the position coordinates of the connection nodes;

[0020] S204. Calculate the hole diameter and chamfer angle of each node;

[0021] S205. Generate a data string in the format of "profile code_length_node coordinates_hole diameter_chamfer angle".

[0022] Furthermore, the method for generating the sheet nesting DXF drawing includes:

[0023] S301. Automatically identify the sheet boundary contour;

[0024] S302. Optimize the cutting path to generate numerical control code;

[0025] S303. Mark the groove angle and welding symbol;

[0026] S304. Generate the drawing frame information including the sheet thickness and material mark.

[0027] Furthermore, the predetermined coding rule is:

[0028] The profile code adopts the structure of "SM - project code - section number - serial number";

[0029] The sheet code adopts the structure of "BM - material code - thickness value - cutting batch number".

[0030] Furthermore, the data binding method includes:

[0031] Establish a feature point coordinate system in the 3D model;

[0032] Establish a spatial mapping relationship between the structured data file and the corresponding feature points;

[0033] Embed interactive data marker points;

[0034] Generate a check code containing data version information.

[0035] Further, the automatic parsing process of the workshop production system includes:

[0036] Parse the profile processing data to generate numerical control cutting instructions;

[0037] Decompose the DXF drawing of the sheet material nesting to generate a parts list;

[0038] Automatically allocate processing procedures and workstations;

[0039] Generate a visual assembly guidance interface.

[0040] Further, the structured data file is in JSON format and includes the following fields: project identification code, section number, part type identification, processing parameter array, three-dimensional coordinate reference system, version timestamp.

[0041] Further, the method further includes:

[0042] Establish a topological relationship check matrix between the three-dimensional model and the processing data, perform dimensional chain closure verification, and generate a data integrity report.

[0043] Further, the workshop production system includes:

[0044] Profile automatic cutting machine data interface, sheet material cutting robot control module, process dispatching management unit, and mobile three-dimensional visualization terminal.

[0045] Further, the node coordinates are represented by a relative coordinate system, and the relative coordinate system takes the end of the profile as the origin and establishes an X-axis coordinate system along the length direction.

[0046] The beneficial effects brought by the present invention are as follows:

[0047] As can be seen from the above solution, the embodiment of the present invention provides a method for expressing the manufacturing information of ship outfitting parts in a non-graphical form. By extracting the geometric feature data and process parameters of ship outfitting parts from a three-dimensional model; generating profile processing data according to the geometric feature data, and the profile processing data at least includes: profile code, length dimension, hole opening position parameter, and chamfer parameter; generating a DXF drawing of the sheet material nesting according to the geometric feature data, and the DXF drawing includes sheet material code, cutting path data, and bevel processing parameter; generating a structured data file from the profile processing data and the DXF drawing of the sheet material nesting according to a predetermined coding rule; performing data binding on the structured data file and the three-dimensional model; outputting the bound data to the workshop production system for automatic parsing process. The technical solution of the present invention can replace two-dimensional drawings and realize a new information expression for data-driven production, using specific format text to describe the processing information of outfitting parts, so as to reduce the drawing workload of designers and improve the production efficiency of outfitting parts. Brief Description of the Drawings

[0048] Figure 1 This is a flowchart of a method for non-graphically expressing the manufacturing information of ship outfitting parts according to an embodiment of the present invention. Detailed Description of the Preferred Embodiments

[0049] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0050] As Figure 1 shown Figure 1 This is a flowchart of a method for non-graphically expressing the manufacturing information of ship outfitting parts according to an embodiment of the present invention.

[0051] Figure 1 In

[0052] S101. Extract the geometric feature data and process parameters of the ship outfitting parts from the 3D model;

[0053] S102. Generate profile processing data according to the geometric feature data, and the profile processing data at least includes: profile code, length dimension, hole opening position parameters and chamfer parameters;

[0054] S103. Generate a DXF drawing for plate nesting according to the geometric feature data, and the DXF drawing includes plate codes, cutting path data and bevel processing parameters;

[0055] S104. Generate a structured data file from the profile processing data and the DXF drawing for plate nesting according to a predetermined coding rule;

[0056] S105. Bind the structured data file to the 3D model;

[0057] S106. Output the bound data to the workshop production system for automatic parsing and processing.

[0058] In an embodiment of the present invention, a method for expressing the manufacturing information of ship outfitting parts in a non-graphic form can achieve seamless docking between three-dimensional model data and the workshop production system by replacing traditional drawings with structured data. Among them, the core solutions include: data extraction and structuring: extracting geometric features and process parameters from the three-dimensional model to generate profile processing data and plate nesting DXF drawings; coding rules and data binding: generating structured data files using specific coding rules and binding them to the three-dimensional model; automated production docking: parsing the data through the workshop system to automatically generate processing instructions and operation assignments.

[0059] The technical solution of this case can at least reduce the design drawing workload by 60% by replacing drawings with structured data; binding the three-dimensional model with the processing data can achieve paperless construction and reduce the construction error rate; directly docking with the workshop system can avoid the process of manually disassembling drawings and improve the production efficiency by 20%.

[0060] In an embodiment of the present invention, the method for generating the profile processing data includes:

[0061] S201. Identify the profile cross-section shape parameters;

[0062] S202. Extract the profile centerline length;

[0063] S203. Mark the position coordinates of the connection nodes;

[0064] S204. Calculate the hole diameter and chamfer angle of each node;

[0065] S205. Generate a data string in the format of "profile code_length_node coordinates_hole diameter_chamfer angle".

[0066] In the embodiment of the present invention, the profile processing data is in a standardized string format (such as "profile code_length_node coordinates_hole diameter_chamfer angle") to ensure direct parsing by numerical control equipment and eliminate manual programming errors. Compared with the traditional manual measurement and marking method, the node coordinates are associated with the processing parameters to achieve precise positioning of profile hole opening and chamfering.

[0067] In another embodiment of the present invention, the method for generating the plate nesting DXF drawing includes:

[0068] S301. Automatically identify the plate boundary contour;

[0069] S302. Optimize the cutting path to generate numerical control code;

[0070] S303. Mark the groove angle and welding symbol;

[0071] S304. Generate the drawing frame information including the plate thickness and material mark.

[0072] Among them, the DXF drawing of the sheet nesting automatically generates cutting paths and bevel parameters, optimizing the material utilization rate. Among them, traditional nesting relies on manual arrangement, and the material waste is about 8%-12%. For the technical solution of the present invention, the numerical control code directly drives the cutting equipment, reducing the intermediate conversion link and increasing the sheet processing efficiency by more than 30%.

[0073] In one embodiment of the present invention, the predetermined coding rule is as follows:

[0074] The section bar coding adopts the structure of "SM - project code - section number - serial number";

[0075] The sheet bar coding adopts the structure of "BM - material code - thickness value - cutting batch number".

[0076] In another embodiment of the present invention, the data binding method includes:

[0077] Establish a feature point coordinate system in the 3D model;

[0078] Establish a spatial mapping relationship between the structured data file and the corresponding feature points;

[0079] Embed interactive data marker points;

[0080] Generate a check code including data version information.

[0081] Among them, when comparing 2D drawings, multiple views need to be compared for positioning. The spatial mapping between the 3D model feature point coordinate system and the data file ensures that construction personnel can quickly locate parts through a mobile terminal; the data version check code can prevent version conflicts and further ensure the consistency of production data.

[0082] In another embodiment of the present invention, the automatic parsing process of the workshop production system includes:

[0083] Parse the section bar processing data to generate numerical control cutting instructions;

[0084] Decompose the DXF drawing of the sheet nesting to generate a parts list;

[0085] Automatically allocate processing procedures and workstations;

[0086] Generate a visual assembly guidance interface.

[0087] Among them, the workshop system automatically parses and generates operation dispatch lists, greatly reducing the workload of process personnel; the visual assembly guidance interface replaces paper drawings, improving the assembly efficiency and reducing the training cost.

[0088] In another embodiment of the present invention, the structured data file adopts the JSON format and includes the following fields: project identification code, segment number, part type identification, machining parameter array, three-dimensional coordinate reference system, and version timestamp.

[0089] In another embodiment of the present invention, the method further includes:

[0090] Establishing a topological relationship verification matrix between the three-dimensional model and the machining data, performing dimensional chain closure verification, and generating a data integrity report. Among them, the topological relationship verification matrix automatically detects the logical consistency between the data and the model (such as the matching of hole positions and profile lengths), reducing the rework rate; the dimensional chain closure verification ensures the self-consistency of the machining data and eliminates the omissions of traditional manual verification.

[0091] In another embodiment of the present invention, the workshop production system includes:

[0092] The data interface of the profile automatic cutting machine, the control module of the plate cutting robot, the operation dispatching management unit, and the mobile three-dimensional visualization terminal.

[0093] Among them, the profile automatic cutting machine and the plate cutting robot directly receive data instructions to achieve unmanned processing of the entire process; the mobile three-dimensional visualization terminal supports real-time retrieval of models and data on-site, improving construction flexibility.

[0094] In another embodiment of the present invention, the node coordinates are represented by a relative coordinate system, and the relative coordinate system takes the end of the profile as the origin and establishes an X-axis coordinate system along the length direction.

[0095] In an embodiment of the present invention, the expression method of the machining data of the profile is established as follows:

[0096] Formulating a set of profile machining data rules, expressing the machining data of various profiles in a specific text expression method and abandoning the graphical expression method, specifically as follows:

[0097] a) Explanation of the end cutting code: The head end cutting and tail end cutting codes: U45V80 represent the cut surface formed by measuring 45 mm inwards from the V end and 80 mm inwards from the V end together with the reference point.

[0098] When the cutting amount is positive, cut inwards; when the cutting amount is negative, cut outwards.

[0099] b) Explanation of the cutting foot code

[0100] Triangular chamfer: QA25X35 means cutting off Angle A, cutting 25 mm in the width direction of the profile and 35 mm in the length direction, forming a triangle. QA0 means cutting a triangle with the length and width both equal to half of the width of the profile chamfering surface. Note: If there are two angles on one surface, the width of the profile chamfering surface here refers to half of the entire width of the profile. For example, for QA0 of flat steel, it means cutting a triangle with the length and width both equal to half of the width of the flat steel.

[0101] Square chamfer: FC25X35 means cutting off Angle C, cutting 25 mm in the width direction of the profile and 35 mm in the length direction, forming a square.

[0102] Round chamfer: RB25 means cutting a round chamfer with R25 for Angle B.

[0103] Round head (only for flat steel): D100 means the fillet radius is 100.

[0104] c) Description of hole opening codes

[0105] Hole opening surface / hole opening type Hole opening parameters / Length distance / Width distance

[0106] D10 represents a round hole with a diameter of 10 mm

[0107] H20X10 / 35 represents a long round hole with a length of 20 and a width of 10, and the deflection angle is 35°. Place the profile in the corresponding posture according to the description. For the horizontal plane, look from above, and for the side plane, look from the left. When the long axis is consistent with the length direction of the profile, it is 0°, and the angle is positive when deflecting clockwise and negative when deflecting counterclockwise.

[0108] M10 represents a threaded hole with a diameter of 10

[0109] B10 represents a countersunk head screw hole with a diameter of 10

[0110] Place the profile in the specified posture. The length distance is measured from the head end, and the width direction is measured according to the principle of from left to right and from small to large.

[0111] An embodiment of the present invention provides a method for expressing the manufacturing information of ship outfitting parts in a non-graphic form. By extracting the geometric feature data and process parameters of ship outfitting parts from a three-dimensional model; generating profile processing data according to the geometric feature data, and the profile processing data at least includes: profile code, length dimension, hole opening position parameters and chamfering parameters; generating a DXF drawing for plate nesting according to the geometric feature data, and the DXF drawing contains plate code, cutting path data and bevel processing parameters; generating a structured data file according to the profile processing data and the DXF drawing for plate nesting according to a predetermined coding rule; performing data binding on the structured data file and the three-dimensional model; outputting the bound data to the workshop production system for automatic parsing and processing.

[0112] The technical solution of the present invention can replace two-dimensional drawings and realize the description of the processing information of outfitting parts in a specific format of a new type of information expression driven by data, so as to reduce the drawing workload of designers and improve the production efficiency of outfitting parts.

[0113] The above is the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A method for non-graphically expressing the manufacturing information of ship outfitting parts, characterized in that, The method includes: S101. Extract the geometric feature data and process parameters of the ship outfitting parts from the 3D model; S102. Generate profile processing data according to the geometric feature data, where the profile processing data at least includes: profile code, length dimension, hole opening position parameters, and chamfer parameters; S103. Generate a DXF drawing for plate nesting according to the geometric feature data, where the DXF drawing contains plate codes, cutting path data, and bevel processing parameters; S104. Generate a structured data file from the profile processing data and the DXF drawing for plate nesting according to a predetermined coding rule; S105. Perform data binding between the structured data file and the 3D model; S106. Output the bound data to the workshop production system for automatic parsing and processing.

2. The method for expressing the manufacturing information of ship outfitting parts in a non-graphic form according to claim 1, wherein The method for generating the profile processing data includes: S201. Identify the profile cross-section shape parameters; S202. Extract the length of the profile center line; S203. Mark the position coordinates of the connection nodes; S204. Calculate the hole diameter and chamfer angle of each node; S205. Generate a data string in the format of "profile code_length_node coordinates_hole diameter_chamfer angle".

3. The method for expressing the manufacturing information of ship fitting parts in a non-graphic form according to claim 1, wherein The method for generating the DXF drawing for plate nesting includes: S301. Automatically identify the plate boundary contour; S302. Optimize the cutting path to generate numerical control codes; S303. Mark the bevel angle and welding symbols; S304. Generate drawing frame information including plate thickness and material marks.

4. The method for expressing the manufacturing information of ship outfitting parts in a non-graphic form according to claim 1, wherein The predetermined coding rule is: The profile code adopts the structure of "SM - project code - section number - serial number"; The plate code adopts the structure of "BM - material code - thickness value - cutting batch number".

5. The method for expressing the manufacturing information of ship outfitting parts in a non-graphic form according to claim 1, characterized in that The data binding method includes: Establish a feature point coordinate system in the 3D model; Establish a spatial mapping relationship between the structured data file and the corresponding feature points; Embed interactive data marker points; Generate a check code including data version information.

6. The method for expressing the manufacturing information of ship outfitting parts in a non-graphic form according to claim 1, characterized in that, The automatic parsing and processing of the workshop production system includes: Parse the profile processing data to generate numerical control cutting instructions; Decompose the DXF drawing for plate nesting to generate a parts list; Automatically allocate processing procedures and workstations; Generate a visual assembly guidance interface.

7. The method for expressing the manufacturing information of ship outfitting parts in a non-graphic form according to claim 1, characterized in that The structured data file adopts the JSON format and contains the following fields: project identification code, section number, part type identification, processing parameter array, 3D coordinate reference system, version timestamp.

8. A method for expressing the manufacturing information of ship fitting parts in a non-graphic form according to claim 1, characterized in that, The method further includes: Establish a topological relationship verification matrix between the 3D model and the processing data, perform dimensional chain closure verification, and generate a data integrity report.

9. The method for expressing the manufacturing information of ship outfitting parts in a non-graphic form according to claim 1, wherein The workshop production system includes: Data interface for the profile automatic cutting machine, control module for the plate cutting robot, process dispatching management unit, and mobile 3D visualization terminal.

10. The method for expressing the manufacturing information of ship fitting parts in a non-graphic form according to claim 2, wherein The node coordinates are represented by a relative coordinate system, and the relative coordinate system takes the end of the profile as the origin and establishes an X-axis coordinate system along the length direction.

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