CN106777746B

CN106777746B - Intelligent generation method for full three-dimensional model welding seam information and flaw detection sheet bitmap

Info

Publication number: CN106777746B
Application number: CN201611239592.8A
Authority: CN
Inventors: 张芳; 宋彦敬; 商子斌; 陈宇; 刘建云; 韩国梁; 郭晓辉
Original assignee: Bohai Shipyard Group Co Ltd
Current assignee: Bohai Shipyard Group Co Ltd
Priority date: 2016-12-28
Filing date: 2016-12-28
Publication date: 2020-04-07
Anticipated expiration: 2036-12-28
Also published as: CN106777746A

Abstract

The invention provides an intelligent generation method of full three-dimensional model weld information and flaw detection sheet bitmaps. Under a CATIA structural design SR1 module, the definition and output of welding seam information are realized through CAA programming of a development tool, the requirement of outputting a welding seam sheet bitmap is met through expanding and recording process attribute information, and meanwhile, the requirement of an input interface of a welding seam information management system is met; adding a software function module in a CATIA hull design model; based on the structural segmentation model, establishing a weld joint structural tree, inserting a weld joint object into the model, defining a weld joint code, and displaying the weld joint code in a geometric mode; outputting the defined welding seam to generate a sectional welding seam information statistical table; and extracting flaw detection chip position information from the CATIA three-dimensional model added with the welding seam information to generate a flaw detection chip position information table and a chip position diagram. The method of the invention can form the welding seam information into three-dimensional data, and generate the welding seam flaw detection data information and the sheet bitmap. The method is suitable for being applied as a method for processing the welding seam information.

Description

Intelligent generation method for full three-dimensional model welding seam information and flaw detection sheet bitmap

Technical Field

The invention belongs to the technical field of digital manufacturing, relates to a secondary development project based on CATIA/VPM software and hardware, and particularly relates to the definition of weld process attribute information of a full three-dimensional model. In particular to an intelligent generation method of full three-dimensional model welding seam information and flaw detection sheet bitmap.

Background

Most of the current production is based on two-dimensional manual estimation of relevant information of a welding seam, and large deviation exists. The method for defining the weld seam attribute on the three-dimensional model is relatively deficient, cannot meet the requirements of the current fine design and cannot meet the requirements of digital manufacturing, so that a three-dimensional design technology for defining and outputting weld seam information of a full three-dimensional model and intelligently generating a flaw detection sheet bitmap and a sheet position information table is required to be established, and the tracing of the whole process of the weld seam quality of an important structure is realized. The weld seam defining mode of the CATIA software is defined between two plates, two profiles or between two plates and profiles or defined at the boundary of one plate or profile.

Disclosure of Invention

Aiming at the three-dimensional design of structural weld joint information needing flaw detection, the invention provides an intelligent generation method of full three-dimensional model weld joint information and flaw detection sheet bitmaps. The method comprises the steps of defining circular seams, longitudinal seams, folding seams, rib sleeving welding seams and rib manufacturing welding seam information of a structure in a model, coding the welding seams, outputting a sheet bitmap according to flaw detection requirements, forming traceability three-dimensional information of welding seam process management, and solving the technical problem of digital manufacturing.

The technical scheme adopted by the invention for solving the technical problems is as follows:

under a CATIA structural design SR1 module, the definition and the output of welding seam information are realized through CAA programming of a development tool, the requirement of outputting a welding seam sheet bitmap is met, and meanwhile, the requirement of an input interface of a welding seam information management system is also met. And adding a software functional module in the CATIA hull design model. Based on the structural segmentation model, a weld joint structural tree is established, a weld joint object is inserted into the model, weld joint codes are defined, and the weld joint codes are displayed in a geometric mode and in different colors in a distinguishing mode. And outputting the defined welding seam to generate a sectional welding seam information statistical table. And extracting flaw detection chip position information from the CATIA three-dimensional model added with the welding seam information to generate a flaw detection chip position information table and a chip position diagram.

The method has the advantages that the method can form the welding seam information into three-dimensional data, and generate the welding seam flaw detection data information and the sheet bitmap. Has the advantages of convenient use, convenient management and storage and strong practicability. The method is suitable for being applied as a method for processing the welding seam information.

Drawings

FIG. 1 is a data acquisition diagram of a SR1 structural segment model;

FIG. 2 is a tree organization of the weld of the present invention;

FIG. 3 is a user interface diagram of the present invention;

FIG. 4 is a schematic view of an insert weld object template of the present invention;

FIG. 5 is a diagram illustrating a specification of a seam name according to the present invention;

FIG. 6 is a flow chart of the operation of the present invention;

FIGS. 7 and 8 are diagrams of the manual creation of weld objects and modification of functionality according to the present invention;

FIG. 9 is a drawing of the parts associated with the current weld of the present invention;

FIG. 10 is a diagram of a panel add-on output button of the present invention;

FIG. 11 is a schematic view of a weld creation bit of the present invention;

FIG. 12 is a schematic view of the invention depicting the inner edge of a rib as concentric with the weld;

FIG. 13 is a schematic view of the present invention depicting the outer edge of a rib being concentric with the weld;

FIG. 14 is a diagram of the projected profile, weld joint number and plate position markers obtained by the present invention.

Detailed Description

1 three-dimensional weld definition

1) SR1 structures the segment model data as shown in FIG. 1.

The SR1 model can be opened in a VPM environment, and can also be opened in a general product structure.

2) The structure tree organization of the weld is shown in FIG. 2.

3) Definition of weld type and properties:

① the inner seam of segment comprises circumferential seam, rib sleeving seam, rib making seam (between rib panel and rib web), rib making seam (between rib web and rib web, between rib panel and rib panel), and longitudinal seam between two parts.

② circular seam attribute comprises circular seam number, welding seam type, maximum plate thickness, minimum plate thickness, material, welding symbol, groove form, welding seam length including theoretical surface/line position, diameter, number of pieces, piece position number, detection method, detection proportion, and qualified grade, recording circular seam between shell ring components, naming by adopting 'H-subsection number-component number 1/component number 2', and creating only one circular seam object between shell ring components.

③ Rib suit weld seam attribute includes Rib suit seam number, weld seam type, maximum plate thickness, minimum plate thickness, material, welding symbol, groove form, weld seam length, theoretical surface/line position, diameter, number of sheets, sheet position number, detection method, detection proportion, and qualified grade, and the rib suit seam between rib part and shell ring part is recorded and named by LT-segment number-rib position number + -offset distance.

④ Rib production seams are divided into 3 types, the attributes include rib production seam number, welding seam type, maximum plate thickness, minimum plate thickness, material, welding symbol, groove form, welding seam length, theoretical plane/line position, diameter, number of sheets, sheet number, detection method, detection proportion and qualification grade, the rib production seam between a rib panel and a rib web is recorded and named by 'LZ-segment number-rib number +/-offset distance-J1 (2, …)', the rib production seam between a rib web and a rib web is recorded and named by 'LZ-segment number-rib number +/-offset distance-F1 (2, …)', the rib production seam between a rib panel and a rib panel is recorded and named by 'LZ-segment number-rib number +/-offset distance-M1 (2, …)'.A seam object is created between a rib panel and a rib web, between a rib web and a rib web, between a rib panel and a rib web, and a rib web.

⑤ longitudinal seam attribute comprises longitudinal seam number, welding seam type, maximum plate thickness, minimum plate thickness, material, welding symbol, groove form, welding seam length, number of pieces, piece position number, detection method, detection proportion, and qualification grade, recording longitudinal seam between shell and plate parts, naming by Z-segment number-component number-part number 1/part number 2, and creating only one longitudinal seam object between shell and plate parts.

⑥ the inter-segment welds include a fold seam that needs to be established from segment to segment.

⑦ the folding seam is used as a special circular seam, and its attributes include number of the folding seam, type of the seam, maximum thickness of the plate, minimum thickness of the plate, material, welding symbol, groove form, length of the seam, theoretical surface/line position, diameter, number of pieces, detection method, detection ratio, qualification grade, folding segment 1, and folding segment 2, the seam between the segments is recorded by the folding seam, named with 'HL-segment number 1/segment number 2', and only one object of the folding seam is created between the segments.

⑧ for general parts, can be defined as butt seams and fillet welds.

4) Description of the user interface:

this function is used to manage welds within a given segment, as well as a closed seam with a given reference segment. With the functions of checking, synchronizing, creating, modifying or deleting welds, etc., the user interface is shown in fig. 3.

Selecting a segment and a reference segment, wherein the reference segment is used for calculating a folding seam.

Selecting the segmentation type, and automatically calculating the rule of each type of welding seam as follows:

and calculating a folding seam method. And (4) taking account of the inconsistency of the NY shell plate wall thickness, extracting the theoretical surface of the NY segmented shell plate part, calculating the position of a folding surface with the theoretical surface of the shell plate part of the adjacent reference segment, extracting a folding seam on the M segmented theoretical surface, and naming according to the folding seam naming specification.

And checking whether the current closing seam is created in the reference segment or not, and if so, not repeatedly creating.

Creating a weld joint model:

the weld object template is inserted as shown in fig. 4.

Each weld is defined as a Part:

the attributes are recorded in the weld call template custom attributes.

The theoretical surfaces of the two sets of parts are referenced to the geometric set. If the current part is a section bar, extracting a surface intersecting with another group of objects as a theoretical surface, and calculating through Coping information.

And obtaining a welding seam by intersecting the two groups of theoretical surfaces.

The theoretical faces of the shell parts within the current segment are copied into the weld object (List 1). The segmented inner shell plate identification method is characterized in that all plates in a shell ring assembly or part are identified according to codes defined by the assembly and the part, for example, an NY shell ring assembly classification code is N, an NY shell plate part classification code is NS.

Since the segments are published and exposed and stored in the vpm, the shell of the current reference segment cannot be copied to the weld object (List2), and the current reference segment needs to be programmed.

And calculating the bounding box to obtain the position of the rib position surface or rib position offset surface of the current closure seam, and extracting the edge of the position of the rib position surface or rib position offset surface from a theoretical surface to be used as a welding seam. And judging whether the extracted welding line is a closed circular ring or not, and if not, prompting the user that the welding line is not successfully created. If the weld joint object is successfully created, the attributes are recorded in the product attribute panel and named according to the folding joint naming specification, as shown in fig. 5.

And (4) calculating a circular seam method. And traversing the shell ring assemblies from the NY segment, identifying adjacent shell ring assemblies through the bounding box, and calculating the circular seam between every two adjacent shell ring assemblies. And extracting the theoretical surface of each NY shell plate in the shell ring assembly and the theoretical surface of NY segmented shell plate parts, calculating a circular seam, and naming according to a circular seam naming specification.

And ensuring that the NY segments have correct names and attributes and are successfully recombined.

And inserting the welding seam object template.

And traversing and selecting NY segmented direct sub-assembly nodes, and searching a shell assembly according to a naming rule, wherein the NY shell assembly classification code is N.

The theoretical faces of the NY shell plate parts within the current segment are copied from the shell plate parts to the weld object, the first shell-ring assembly is copied to List1, and the second shell-ring assembly is copied to List 2. And the NY shell plate identification method in the segment is characterized in that the classification code of the NY shell plate part is NS, and all plates in the part can be identified.

And calculating a circular seam by an intersection mode, and taking the intersection line of the two groups of theoretical surfaces as a welding seam. And judging whether the extracted welding line is a closed circular ring or not, and if not, prompting the user that the welding line is not successfully created. And if the weld joint object is successfully created, recording the attributes in the product attribute panel, and naming according to the circumferential seam naming specification.

Finding out the shell plate component and the rib component from the shell ring assembly, calculating the rib sleeving seam, and naming according to the naming specification of the rib sleeving seam.

And ensuring that the name and the attribute of the shell ring component are correct and the recombination is successful.

And inserting the welding seam object template.

And traversing the direct sub-assembly nodes of the current shell-and-ring assembly, and searching a shell component and a rib component according to a naming rule, wherein the classification code of the NY shell-and-ring assembly is N, the classification code of the NY shell-and-plate component is NS, the classification code of the rib component is FR, and the classification code of a web plate in the component is K.

Theoretical planes of NY shell parts were copied from shell parts to weld targets (List1), and theoretical lines of rib parts were copied from rib parts to weld targets (List 2).

The rib part can be created in a plate mode or a section mode, and no matter which mode is adopted, a theoretical surface or a theoretical line of the rib part is parallel to a longitudinal section rib surface, so that the longitudinal section is obtained through calculation of the theoretical surface or the theoretical line, and an intersecting line, namely a rib sleeve seam, is obtained through intersection of the longitudinal section and a theoretical surface of a W shell plate part. And judging whether the extracted welding line is a circular ring or not, and if not, prompting the user that the welding line is not established successfully. If the weld joint object is successfully created, recording the attributes in a product attribute panel, and naming according to the rib sleeve seam naming specification.

Finding out a rib panel and a rib web from the rib part, calculating a rib making seam, and naming according to a rib making seam naming specification.

And inserting the welding seam object template.

And traversing the direct sub-assembly nodes of the current rib part, and searching a rib panel part and a rib web part according to a naming rule, wherein the NY shell ring component classification code is N, the rib part classification code is FR, the panel classification code is W, and the web classification code is K.

For the seam made between the web and the panel, the theoretical plane of the rib panel part was copied from the rib part to the weld object (List1), and the theoretical line of the rib part was copied from the rib web part to the weld object (List 2). The rib web part is created in a plate mode, the theoretical surface of the rib web part is parallel to the longitudinal section rib position surface, the longitudinal section is obtained through calculation of the theoretical surface or the theoretical line of the rib web part, and the intersecting line, namely the rib manufacturing seam, is obtained through intersection of the longitudinal section and the NY shell plate part theoretical surface. And judging whether the extracted welding line is a circular ring or not, and if not, prompting the user that the welding line is not established successfully.

For the seam made between webs, the theoretical face of the adjacent rib web part was copied to the weld object (List1), and the theoretical line of the other adjacent rib web part was copied to the weld object (List 2). The theoretical planes are crossed, and the obtained intersecting line, namely the rib making seam.

For the seam made from panel to panel, the theoretical plane of the adjacent rib panel part was copied to the weld object (List1) and the theoretical line of the other adjacent rib panel part was copied to the weld object (List 2). The theoretical planes are crossed, and the obtained intersecting line, namely the rib making seam.

If the weld joint object is successfully created, recording the attributes in a product attribute panel, and naming according to the rib making seam naming specification.

From the shell parts of the shell parts, the adjacency relationship of the shell parts is calculated by using the intersection of the shell parts. And obtaining adjacent parts, calculating intersection to create a longitudinal seam, and naming according to a longitudinal seam naming standard.

And ensuring that the shell plate component must have correct name and attribute and is successfully recombined.

And inserting the welding seam object template.

And traversing all NY shell plates below the shell plate component. From the theoretical face of the NY shell plate part, to the weld target (first shell ring assembly copied to List 1). The method for identifying the NY shell plate in the segment comprises the steps that the classification code of the NY shell ring assembly is N, the classification code of the NY shell plate component is NS, and all plates in the component are obtained.

And calculating adjacent longitudinal seams (theoretical surface intersection lines) as welding seams in an intersection mode. And if the weld joint object is successfully created, recording the attributes in the product attribute panel, and naming according to the circumferential seam naming specification.

After the welding line is created, the number capable of being distributed is carried out according to the length of the film 300mm, the rest part is less than 300mm, the number is also used as a film sub-number, and the number of the films is calculated from the head to the tail in the clockwise direction.

If the operation flow is as shown in FIG. 6:

after the segment is selected, the existing welds of the current segment will be automatically listed.

Through the analysis function, the input condition of the current existing welding seam can be compared with whether the welding seam needs to be updated or not, and whether other new welding seams exist in the segment or not. The state of the weld is shown as new, changed or normal.

Through the "synchronization" function, existing welds are updated, and new welds are automatically generated, according to the above calculation rules. According to the result, the weld state can be displayed as new addition success, change success, new addition failure and change failure.

By the "add" function, the user is allowed to select the weld type and manipulate the object, manually creating the weld object, as shown in fig. 7 and 8.

Through the 'edit' function, the user is allowed to modify the operation object and basic properties of the current weld.

Through the "delete" function, the user is allowed to delete the deposited weld.

With the "preview" function, a preview window is opened and the user can select any of the rows of entries to view the part associated with the current slot, as shown in FIG. 9.

Through the output function, the output of the bit map of the specified segment can be realized. The detailed description refers to the section "slice bit information output".

2 weld information output

1) Inputting data:

SR1 segmented design data for weld features have been created.

2) Outputting data:

watch (A)

Weld information table in Exce1 format.

And outputting the welding seam codes according to the naming rule of the welding seams.

The welding seam types are according to a circumferential seam, a folding seam, a rib sleeving seam, a rib manufacturing seam, a longitudinal seam, a butt seam and a corner seam of a common part, and the position of the welding seam is added as a prefix.

Thickness extracts the minimum thickness in the part.

The material is output according to the material of the part.

And outputting the welding symbols according to the groove form.

And outputting the length of the welding seam according to the length of the welding seam at the theoretical position. The list is ordered according to the folding seam, the circular seam, the rib sleeving seam, the rib making seam, the longitudinal seam and the butt seam and the angle seam of the common parts. Allowing the user to make modifications to the weld contents. Through the "output" function, list information can be output.

3 flaw detection slice position information output

This function is implemented by adding an output button to the three-dimensional weld management panel, as shown in FIG. 10.

1) The weld is selected to be traversed from the model.

2) And (4) making seams for the circumferential seams, the folding seams, the rib sleeving seams and the ribs, wherein each seam creates a bitmap. As shown in fig. 11.

The circular seam and the closure seam draw a circle according to the recorded diameter in the weld seam attribute, the circular arcs are equally divided on the circular arcs according to the number of the circular arcs, and the center lines are marked.

3) The rib sleeve seam draws a circle according to the recorded diameter in the seam attribute, equally divides the arc on the arc according to the number of the arc, marks a central line, and draws the outer edge of the rib as a concentric circle with the seam. As shown in fig. 12.

4) The rib making seam draws a circle according to the recorded diameter in the seam attribute, equally divides the arc on the arc according to the number of the arc, marks a central line, and draws the outer edge of the rib as a concentric circle with the seam. As shown in fig. 13.

5) For the longitudinal seam, each part creates a sheet bitmap, and after the outline is obtained by projection, the sheet bitmap is marked, as shown in fig. 14.

Claims

1. The intelligent generation method of the welding line information and flaw detection slice bitmap of the full three-dimensional model is characterized by comprising the following steps of:

under a CATIA structural design SR1 module, the definition and output of welding seam information are realized through CAA programming of a development tool, the requirement of outputting a welding seam sheet bitmap is met through the expansion recording of process attribute information, and meanwhile, the requirement of an input interface of a welding seam information management system is also met; adding a software function module in a CATIA hull design model; based on the structural segmentation model, establishing a weld joint structural tree, inserting a weld joint object into the model, defining weld joint codes, and displaying the weld joint codes in a geometric mode and in different colors; outputting the defined welding seam to generate a sectional welding seam information statistical table; extracting flaw detection chip position information from the CATIA three-dimensional model with additional welding seam information to generate a flaw detection chip position information table and a chip bitmap, wherein the steps are as follows:

1) traversing the weld from the model;

2) making seams for the circumferential seams, the folding seams, the rib sleeving seams and the ribs, and creating a bitmap for each welding seam; the circular seams and the closure seams draw circles according to the recorded diameters in the attributes of the welding seams, the circular arcs are equally divided on the circular arcs according to the number of the circular arcs, and the center lines are marked;

3) the rib sleeving seam draws a circle according to the recorded diameter in the seam attribute, equally divides the arc on the arc according to the number of the arc, and marks a central line; drawing the outer edge of the rib as a circle concentric with the welding line;

4) making rib seams, drawing circles according to the recorded diameters in the seam attributes, equally dividing the arcs on the arcs according to the number of the arcs, and marking central lines; drawing the outer edge of the rib as a circle concentric with the welding line;

5) for the longitudinal seam, each part creates a sheet bitmap, and after the outline is obtained through projection, the sheet bitmap is marked.