CN114091190B - Automatic drawing processing method for structural pipe intersecting line - Google Patents
Automatic drawing processing method for structural pipe intersecting line Download PDFInfo
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Abstract
The invention relates to an automatic plotting processing method for intersecting lines of a structural pipe, which is characterized by comprising the following steps of: s1, preprocessing the whole pipe model needing drawing and generating a component drawing model; s2, acquiring component model data of the component drawing model; s3, processing the acquired component model data, acquiring corresponding space curve functions of intersecting lines, footprint curves and bevel angles so as to draw corresponding images; s4, drawing a graph according to the processing result; s5, finishing drawing and outputting data; and S6, reading the data and generating a complete drawing. The invention can realize automatic drawing and can realize accurate batch automatic drawing of intersecting line development drawings.
Description
Technical Field
The invention relates to the technical field of drawing of intersecting lines of structural pipes, in particular to an automatic drawing processing method for intersecting lines of structural pipes.
Background
In the maritime industry, pipe structures are very common, for example, a jacket is almost completely made of steel pipes in a connected mode. However, in the construction of pipe joints, saddle ports are a technical problem that cannot be bypassed. Saddle mouth means that a pipe with a smaller pipe diameter is cut along the surface of a large pipe at the position where the pipe is connected with the pipe, and a cutting mouth shape similar to the shape of a saddle is formed, as shown in fig. 1, wherein one circle of the two pipes which are contacted is called as an intersecting line 1, one circle of the outer skin of a cut pipe 2 is called as a groove line 3, and a break 4 is the distance between the inner skin and the outer skin along the axial direction of the cut pipe and is sometimes called as a groove cutting value. This length is positive or negative, with positive numbers indicating that the outer skin is shorter in length than the inner skin, and specifically as shown in fig. 2, negative numbers appear at smaller angles of inclination indicating that the outer skin is longer than the inner skin.
Most of the pipes in the marine industry are large-caliber pipes, and the pipes are generally developed into a development drawing, namely, the pipes are developed into plates, so that the groove value of a saddle opening and the length of an inner outer skin at any point can be mastered. The difficulty of drawing the saddle opening is as follows: the included angle of every point department when two pipes intersect all changes, and in order to satisfy the welding demand, the groove also can change from time to time. The current drawing method used by most drawing personnel is as follows: the structure is re-established in CAD or other engineering software, the information of pipe diameter, wall thickness, node length, etc. is input, the entity of pipe is simulated with great amount of points, Boolean operation is performed on the crossed pipe, and unnecessary points are cut off. And then the obtained Boolean model is expanded into a plane form, the method uses a large amount of data for simulation, the operation is complicated, data needs to be imported back and forth in different software, and the possibility of problems is increased due to manual operation.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an automatic drawing processing method for intersecting lines of a structural tube, which realizes a method for accurately and automatically drawing expanded drawings of intersecting lines in batches and ensures that the drawing process is extremely simple.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
an automated map-drawing processing method for intersecting lines of a structural pipe, the method comprising the steps of:
s1, preprocessing the cut pipe model of which the drawing needs to be provided, and generating a component drawing model;
s2, acquiring component model data of the component drawing model by using a tekla open API interface;
s3, processing the acquired component model data to acquire a spatial curve function corresponding to the intersection line and the bevel angle thereof;
s4, drawing a graph according to the processing result;
s5, completing drawing and outputting data;
and S6, reading the data and generating a complete drawing.
Further, the method for preprocessing the model data in step S1 includes the steps of:
s11, binding the cut pipe with the drawing as a member;
s12, performing cutting pretreatment on the mouth shapes at the left and right ends of the cut pipe so as to determine the connection relation and obtain the pipe orifice information of the left and right main pipes at the left and right sides of the cut pipe;
and S13, generating a corresponding component drawing model.
Further, the method for cutting and preprocessing the mouth shapes at the left end and the right end of the cut pipe comprises the steps of connecting the crossed parts of the pipe sections in an assembly cutting mode, and adopting site welding or not adding welding in the connecting process to avoid the components of the crossed parts.
Further, the method for acquiring the component information of the component drawing model in step S2 includes:
s21, reading the information of the member through the API of tekla, wherein the information of the member at least comprises one or more of parameter information of member number, main part coordinate system, part number, section profile of each pipe section in the member, pipe diameter wall thickness and length of each pipe section;
s22, establishing a main part coordinate system and sequencing the components;
and S23, acquiring left and right main pipe information, and acquiring the intersection positions and eccentric distances of the axes of the left and right main pipes respectively intersected with the cut pipe, wherein the left and right main pipe information at least comprises one or more items of parameter information of pipe diameter wall thickness, section profiles, part pipes intersected with the main pipes, and the central points, starting points and end points of the left and right main pipes.
Further, in step S22, when the components are sorted, the components need to be reordered in the X direction in order of increasing scale in the X direction with the main part direction of the components as the X direction of the coordinate system, and the components are stored in the component sorting list.
Further, in step S3, acquiring the spatial curve function corresponding to the intersection line and the bevel angle thereof requires acquiring a skin cutting value and a skin intersecting curve of the cut pipe, wherein the method for acquiring the skin cutting value and the skin intersecting curve includes:
s31, acquiring a function of the dihedral angle in the unfolding direction, and acquiring a corresponding bevel angle function and a port angle function according to the function of the dihedral angle in the unfolding direction;
s32, obtaining the edge curve of the cut pipe according to the bevel angle function and the port angle function in the step S31, and obtaining a mathematical model of the coordinates of any point of the cut pipe, wherein in the mathematical model, when the coordinates of any point are needed, the mathematical model can be obtained by inputting corresponding parameters through the corresponding function;
and S33, obtaining a cutting value and a penetration curve of the outer skin according to the outer skin port angle and the bevel angle of the cut pipe in the edge curve of the cut pipe.
Further, in step S4, the method for drawing a graph includes:
s41, drawing a frame line of the middle section of the pipe according to the acquired data of the cut pipe;
s42, drawing inner diameter curves of two ends of the cut tube, namely an endothelium intersecting line curve;
s43, drawing an outer diameter curve according to the obtained outer skin cutting value and the outer skin intersecting curve,
further, the method for outputting data in step S5 includes acquiring data of the cut pipe and the main pipe according to the acquired member information of the member drawing model and the information of the skin intersecting line of the cut pipe, and specifically includes:
s51, acquiring 0-degree and 180-degree positions of the left end and the right end of the port of the cut pipe according to a mathematical model of the port of the cut pipe, wherein in a plane which passes through the central axis of the cut pipe and is parallel to the central axis of the main pipe, the intersection point of the bus of the cut pipe with the included angle smaller than 90 degrees and the intersecting line is a 0-degree point, and the intersection point of the bus of the cut pipe with the included angle larger than 90 degrees and the intersecting line is a 180-degree point;
s52, obtaining the values of L0, L180, OA, OB and OC of the cut tube, wherein,
l0 represents the axial distance from the intersection node of the central axis of the cut pipe and the central axis of the main pipe to the endothelial 0 DEG point of the corresponding end part;
l180 represents the generatrix length at the endothelial 180 ° point of the tip;
OA represents the axial distance of the longest point of the endothelium on the intersecting line from the intersection node of the corresponding end;
OB represents the axial distance of the shortest endothelial point on the intersecting line from the intersecting node of the corresponding end;
OC represents the reverse slope value at the longest point of the endothelium on the intersecting line, and OC is less than or equal to 0;
s53, obtaining the values of L00, L88, L000, L180 and Lmax < E > of the cut tube, wherein,
l00 represents the axial distance on the cut pipe from the 0 ° point at the left end to the 0 ° point at the right end of the cut pipe;
l88 represents the axial distance from the 180 DEG point at the left end of the cut pipe to the 180 DEG point at the right end of the cut pipe on the cut rod;
l000 represents the length of a generatrix at the 0-degree point at the left end of the cut pipe;
l180 represents the length of a generatrix at a 180-degree point at the left end of the cut pipe;
lmax < E > represents the maximum length of the tube being cut.
S54, obtaining the longest distance Lmax in the axial direction of the cut pipe, the shortest distance value Lmin in the axial direction of the cut pipe and the axial distance L of the left node and the right node of the cut pipe.
Further, the method for reading the data and generating the complete drawing in step S6 includes:
s61, storing the obtained result in S54 in the custom attribute of the main part in a value type mode;
s62, reading corresponding data in a complete drawing sheet by using a corresponding picture frame template and displaying the corresponding data in the drawing;
s63, performing drawing typesetting through tekla, moving unneeded original component drawings out of drawing picture frames, and generating component drawings;
and S64, automatically adjusting the drawing view proportion according to the drawing frame size and the length of each pipe diameter so as to match the drawing with a proper size for placing the drawing.
Further, binding the required printed foot print pipe as a member in step S11, cutting the mouth shape of the foot print pipe in step S12, connecting the crossed parts of the pipe sections by using assembly cutting, and avoiding the components of the crossed parts by adopting field welding or not adding welding in the connecting process so as to determine the connecting relationship; in step S3, the method further includes processing the acquired component model data to acquire a spatial curve function corresponding to the footprint line and the bevel angle thereof; in S23, footprint pipe information is obtained, and the intersection position and the eccentric distance of the intersecting axis are obtained, where the footprint pipe information at least includes one or more parameter information of pipe diameter wall thickness, section profile, part pipe intersecting the main pipe, and the central point, starting point, and end point of the footprint pipe.
Further, obtaining the footprint line and the spatial curve function corresponding to the bevel angle thereof requires first obtaining the skin cut value and the skin footprint curve of the footprint pipe, wherein the method for obtaining the skin cut value and the skin footprint curve comprises:
s31, acquiring a function of the dihedral angle in the unfolding direction, and acquiring a corresponding bevel angle function and a port angle function through the function of the dihedral angle in the unfolding direction;
s32, obtaining the edge curve of the footprint pipe according to the slope angle function and the port angle function in the step S31, and obtaining a mathematical model of the coordinates of any point of the footprint pipe, wherein in the mathematical model, when the coordinates of any point are needed, the corresponding parameters are input through the corresponding functions to obtain the coordinates;
and S33, obtaining the cutting value and the footprint curve of the outer skin according to the edge angle and the bevel angle of the outer skin of the footprint pipe in the edge curve of the footprint pipe.
Further, step S4 includes:
and drawing a frame line of the middle section of the pipe according to the acquired data of the footprint pipes, drawing an inner diameter curve of the cutting end of the footprint pipes, namely an inner skin footprint line curve, and drawing an outer diameter curve according to the acquired outer skin cutting value and the outer skin footprint curve.
Further, the method for outputting data in step S5 further includes acquiring data of the footprint pipe according to the acquired component information of the component drawing model and the information of the inner and outer skin footprint lines of the footprint pipe, and specifically includes:
acquiring the data of R00 and R180 and the data of S180 of the footprint pipe,
wherein, R00 represents the axial distance between the 0 degree point of the footprint pipe and the intersected node of the main rod and the cut pipe;
r180 represents the axial distance from a 180-degree point of the footprint to the intersected node of the main rod and the cut pipe;
s-180 represents the distance between the center of the footprint tube and the perpendicular line of the central axis of the tube to be cut,
wherein, the upper part of the cut pipe is positive, and the lower part is negative;
and generating a footprint data table according to the acquired footprint management data, and adjusting the position according to the drawing view position.
Compared with the prior art, the invention has the beneficial effects that: the invention can realize automatic drawing and can realize accurate batch automatic drawing of the intersection line development drawing.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic diagram of a cut pipe in the marine industry;
FIG. 2 is a schematic structural diagram of a groove of a cut pipe in the marine industry
FIG. 3 is a flow chart of a method of the present invention;
FIG. 4 is a flowchart illustrating a specific method of step S1 of the method of the present invention;
FIG. 5 is a flowchart illustrating a specific method of step S2 of the method of the present invention;
FIG. 6 is a flowchart illustrating a specific method of step S3 of the method of the present invention;
FIG. 7 is a flowchart illustrating a specific method of step S4 of the method of the present invention;
FIG. 8 is a flowchart illustrating a specific method of step S5 of the method of the present invention;
fig. 9 is a flowchart of a specific method of step S6 of the method of the present invention.
Detailed Description
As shown in fig. 3, an automatic plotting method for intersecting lines of structural pipes, which is based on, but not limited to, tekla software, includes the following steps:
s1, preprocessing the whole pipe model needing drawing and generating a component drawing model;
s2, acquiring component model data of the component drawing model by using a tekla open API interface;
s3, processing the acquired component model data, acquiring corresponding space curve functions of intersecting lines, footprint curves and bevel angles so as to draw corresponding images;
s4, drawing a graph according to the processing result;
s5, completing drawing and outputting data;
and S6, reading the data and generating a complete drawing.
Specifically, as shown in fig. 4, the method for preprocessing the model data and generating the component drawing model in step S1 includes the steps of:
s11, binding the whole section of pipe required to provide drawing paper into a member;
s12, cutting and preprocessing the mouth shapes at the left end and the right end of the whole section of pipe so as to determine the connection relation and obtain the pipe orifice information of the left main pipe, the right main pipe and the footprint pipe;
s13, cutting the position of the footprint pipe to determine the connection relation and obtain the pipe orifice information of the footprint pipe;
and S14, generating a corresponding component drawing model.
The method for cutting and preprocessing the mouth shapes at the left end and the right end of the whole section of pipe and the method for cutting and preprocessing the position of the foot print pipe both comprise the steps of connecting the crossed parts of the pipe sections in an assembly cutting mode, and avoiding the components of the crossed parts by adopting site welding or not adding welding in the connecting process.
Specifically, as shown in fig. 5, the method for acquiring the component information of the component drawing model in step S2 includes:
s21, reading information of the component through an API interface of Tekla, wherein the information of the component at least comprises one or more of parameter information of a component number, a main part coordinate system, a component number, a section profile of a pipe of each pipe section in the component, pipe diameter wall thickness and length of each pipe section, wherein the Tekla Structures Open API, also called Tekla Open API, provides an interface for different types of application programs, is used for interacting with models and graphic objects in the Tekla Structures, and acquires component model data by using the interface of the Tekla Open API to interact with attributes in the drawings and the models and processes the component model data in the Tekla.
It should be added that in the tekla model, the above-mentioned pipes are all called parts, and in the preprocessing step, the pipe parts with the same axis in the middle are combined into a component, namely the complete cut pipe (the cut pipe is sometimes a part, and sometimes a plurality of parts with the same axis are combined).
The same main pipe and the footprint pipe are also individual parts in the model, and the parts are connected through a modeling means in the preprocessing step, so that the information of the adjacent parts can be read in the component diagram of the cut pipe.
S22, establishing a main part coordinate system and sequencing the components;
and S23, acquiring the information of the footprint pipe, the left main pipe and the right main pipe, and at least acquiring the intersection position and the eccentric distance of the intersecting axes, wherein the information of the footprint pipe, the left main pipe and the right main pipe at least comprises pipe diameter wall thickness, section profiles, part pipes intersecting the main pipes or the footprint pipes, and one or more parameter information of the central point, the starting point and the end point of the footprint pipe, the left main pipe and the right main pipe.
In step S22, the components are reordered in the order of ascending along the X direction with the main part direction of the components as the X direction of the coordinate system, and stored in the component ordering list.
Specifically, as shown in fig. 6, in step S3, the method for obtaining the skin cut value and the skin intersection curve includes:
s31, acquiring a function of the dihedral angle in the unfolding direction, and acquiring a corresponding bevel angle function and a port angle function through the function of the dihedral angle in the unfolding direction;
the intersecting line is generally the line connecting the endothelium and is obtained by the intersection of the space curves of the inner skin of the main tube and the cut tube.
S32, obtaining an edge curve of the cut pipe according to the bevel angle function and the port angle function in the step S31, and obtaining a mathematical model of coordinates of any point of the cut pipe, wherein in the mathematical model, when the coordinates of any point are needed, corresponding parameters are input through a corresponding function to obtain the coordinates;
and S33, obtaining a cutting value and a penetration curve of the outer skin according to the outer skin port angle and the bevel angle of the cut pipe in the edge curve of the cut pipe.
The inner skin of the saddle opening is cut by an intersecting line, and the outer skin is cut by a groove line. There is no distinction between the outer skin port angle and the inner skin port angle, but only one port angle and bevel angle, wherein the acquisition process is as described above. The mathematical model is established before the cutting value and the bevel line are obtained because the two values are difficult to calculate and obtain a curve function, but the corresponding values can be obtained according to the coordinates of points on a specific endothelial intersecting line. I.e. these two values are finally obtained using a stippling method. 360 points are used to simulate the form of the actual model, i.e. 360 cut values and the coordinates of the points on the groove are obtained.
Specifically, as shown in fig. 7, in step S4, the method for drawing a graph includes:
s41, drawing a frame line of the middle section of the pipe according to the acquired data of the cut pipe;
s42, drawing inner diameter curves of two ends of the cut tube, namely an endothelium intersecting line curve;
s43, drawing an outer diameter curve according to the obtained outer skin cutting value and the outer skin intersecting curve,
and S44, acquiring and drawing an outer diameter curve of the footprints according to the positions of the corresponding footprints.
As shown in fig. 8, the method for outputting data in step S5 includes acquiring data of the cut pipe, the main pipe, and the footprint pipe according to the acquired member information of the member drawing model and the skin and skin intersection line information of the cut pipe, and specifically includes:
s51, acquiring 0-degree and 180-degree positions of the left end and the right end of the port of the cut pipe according to a mathematical model of the port of the cut pipe, wherein in a plane which passes through the central axis of the cut pipe and is parallel to the central axis of the main pipe, the intersection point of the bus of the cut pipe with the included angle smaller than 90 degrees and the intersecting line is a 0-degree point, and the intersection point of the bus of the cut pipe with the included angle larger than 90 degrees and the intersecting line is a 180-degree point;
s52, obtaining the values of L0, L180, OA, OB and OC of the cut tube, wherein,
l0 represents the axial distance from the intersection node of the central axis of the cut pipe and the central axis of the main pipe to the endothelial 0 ° point of the corresponding end;
l180 represents the generatrix length at the 180 ° point of the endothelium of the tip;
OA represents the axial distance of the longest point of the endothelium on the intersecting line from the intersection node of the corresponding end;
OB represents the axial distance of the shortest endothelial point on the intersecting line from the intersecting node of the corresponding end;
OC represents the reverse slope value at the longest point of the endothelium on the intersecting line, and OC is less than or equal to 0;
s53, obtaining the values of L00, L88, L000, L180 and Lmax < E > of the cut tube, wherein,
l00 represents the axial distance on the cut pipe from the 0 ° point at the left end to the 0 ° point at the right end of the cut pipe;
l88 represents the axial distance from the 180 DEG point at the left end of the cut pipe to the 180 DEG point at the right end of the cut pipe on the cut rod;
l000 represents the length of a bus at the 0-degree point at the left end of the cut pipe;
l180 represents the length of a bus at a 180-degree point at the left end of the cut pipe;
lmax < E > represents the maximum length of the tube being cut.
S54, acquiring the longest distance Lmax in the axial direction of the cut pipe, the shortest distance value Lmin in the axial direction of the cut pipe and the axial distance L of the left node and the right node of the cut pipe;
s55, obtaining the values of the footprint tubes R00, R180 and S-180, wherein,
r00 represents the axial distance of the 0 ° point of the footprint tube from the intersection of the main bar and the cut tube;
r180 represents the axial distance from a 180-degree point of the footprint to the intersected node of the main rod and the cut pipe;
s-180 represents the distance between the center of the footprint tube and the perpendicular line of the central axis of the tube to be cut,
wherein, the upper part of the cut pipe is positive, and the lower part is negative;
and generating a footprint data table according to the acquired footprint management data, and adjusting the position according to the drawing view position.
It should be noted that, when there is no eccentricity, the node is the intersection point of the central axis of the main rod and the central axis of the cut rod; when the eccentric center exists, the node is the intersection point of the common perpendicular line of the central axis of the cut pole and the main pole and the central axis of the cut pole.
As shown in fig. 9, the method for reading data and generating a complete drawing in step S6 includes:
s61, storing the obtained result in S54 in the custom attribute of the main part in a value type mode;
s62, reading corresponding data in a complete drawing sheet by using a corresponding picture frame template and displaying the corresponding data in the drawing;
s63, performing drawing typesetting through tekla, moving unneeded original component drawings out of drawing picture frames, and generating component drawings;
s64, automatically adjusting the drawing view proportion according to the drawing frame size and the length of each pipe diameter, and placing the drawing in a proper size;
and S65, generating a footprint data table, and adjusting the position according to the drawing view position.
The method for generating the footprint data table in step S65 and adjusting the position according to the drawing view position specifically includes:
establishing a new view at the position of one third of the middle of a drawing, drawing an outer diameter frame line of each pipe by using a straight line, drawing intersecting lines and groove lines at two ends of a cut pipe, specifically simulating 360 points according to the established mathematical model, connecting a curve, automatically generating required sizes after the drawing of the cut pipe is finished, and adding parameters of the data of the cut pipe to the additional attributes of the main part, wherein the additional attributes of the main part are automatically read from the upper left corner and the upper right corner of the drawing frame and are embodied in the drawing, then generating footprint pipes on the main view by using the node coordinates of the footprint pipes according to the number of the footprint pipes, simultaneously establishing a new view below the view, drawing a table by using texts and lines, and adding the data of the parameters of the cut pipe to the table.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (12)
1. An automated map-drawing processing method for intersecting lines of a structural pipe, the method comprising the steps of:
s1, preprocessing the cut pipe model of which the drawing needs to be provided, and generating a component drawing model;
s2, acquiring component model data of the component drawing model;
s3, processing the obtained component model data to obtain a space curve function corresponding to the intersecting line and the bevel angle thereof, wherein,
the method for obtaining the space curve function corresponding to the intersection line and the bevel angle thereof needs to firstly obtain a sheath cutting value and a sheath intersecting curve of the cut pipe, wherein the method for obtaining the sheath cutting value and the sheath intersecting curve comprises the following steps:
s31, acquiring a function of the dihedral angle in the unfolding direction, and acquiring a corresponding bevel angle function and a port angle function through the function of the dihedral angle in the unfolding direction;
s32, obtaining the edge curve of the cut pipe according to the bevel angle function and the port angle function in the step S31, and obtaining a mathematical model of the coordinates of any point of the cut pipe, wherein in the mathematical model, when the coordinates of any point are needed, the mathematical model can be obtained by inputting corresponding parameters through the corresponding function;
s33, obtaining a cutting value and a penetration curve of the outer skin according to the outer skin port angle and the bevel angle of the cut pipe in the edge curve of the cut pipe;
s4, drawing a graph according to the processing result;
s5, completing the drawing and outputting the data.
2. The method for automatically processing the drawing of the intersecting line of the structural pipe as claimed in claim 1, wherein the component model data of the component drawing model obtained in step S2 is based on tekla software and is obtained through tekla open API interface.
3. The method for automated graphical representation of a intersecting line of a structural pipe as claimed in claim 2, wherein the method for preprocessing the model data in step S1 comprises the steps of:
s11, binding the cut pipe with the drawing as a member;
s12, performing cutting pretreatment on the mouth shapes at the left and right ends of the cut pipe so as to determine the connection relation and obtain the pipe orifice information of the left and right main pipes at the left and right sides of the cut pipe;
and S13, generating a corresponding component drawing model.
4. An automated graphical representation processing method for intersecting lines of structural pipes according to claim 3, wherein the method of cutting the mouth shapes at the left and right ends of the cut pipe comprises connecting the intersecting portions of the pipe sections by means of assembly cutting, with or without welding being applied during the connecting process, to avoid the components of the intersecting portions.
5. The automated drawing processing method for intersecting lines of structural pipes according to claim 4, wherein the method for acquiring component information of the component drawing model in step S2 comprises:
s21, reading the information of the component, wherein the component information at least comprises one or any of a component number, a main part coordinate system, a part number, a section profile of a pipe of each pipe section in the component, the pipe diameter wall thickness and the length of each pipe section;
s22, establishing a main part coordinate system, sequencing the components, and reordering the components along the X direction in the sequence from small to large in scale in the X direction by taking the main part direction of the components as the X direction of the coordinate system when the components are sequenced, and storing the components in a component sequencing list;
and S23, acquiring left and right main pipe information, and acquiring the intersection positions and eccentric distances of the axes of the left and right main pipes respectively intersected with the cut pipe, wherein the left and right main pipe information at least comprises one or more items of parameter information of pipe diameter wall thickness, section profiles, part pipes intersected with the main pipes, and the central points, starting points and end points of the left and right main pipes.
6. The method for automated graphical drawing of a intersecting line of a structural pipe according to claim 1, wherein in step S4, the method for drawing a graph comprises:
s41, drawing a frame line of the middle section of the pipe according to the acquired data of the cut pipe;
s42, drawing inner diameter curves of two ends of the cut tube, namely an endothelium intersecting line curve;
and S43, drawing an outer diameter curve according to the obtained skin cutting value and the skin intersecting curve.
7. The method for automatically processing the drawing of the intersecting line of the structural pipe according to claim 6, wherein the method for outputting the data in step S5 includes obtaining the data of the cut pipe and the main pipe according to the component information of the obtained component drawing model and the information of the intersecting line of the inner skin and the outer skin of the cut pipe, and specifically includes:
s51, acquiring 0-degree and 180-degree positions of the left end and the right end of the port of the cut pipe according to a mathematical model of the port of the cut pipe, wherein in a plane which passes through the central axis of the cut pipe and is parallel to the central axis of the main pipe, the intersection point of the bus of the cut pipe with the included angle smaller than 90 degrees and the intersecting line is a 0-degree point, and the intersection point of the bus of the cut pipe with the included angle larger than 90 degrees and the intersecting line is a 180-degree point;
s52, obtaining the values of L0, L180, OA, OB and OC of the cut tube, wherein,
l0 represents the axial distance from the intersection node of the central axis of the cut pipe and the central axis of the main pipe to the endothelial 0 ° point of the corresponding end;
l180 represents the generatrix length at the endothelial 180 ° point of the tip;
OA represents the axial distance of the longest point of the endothelium on the intersecting line from the intersection node of the corresponding end;
OB represents the axial distance of the shortest endothelial point on the intersecting line from the intersecting node of the corresponding end;
OC represents the inverse slope mouth value at the longest point of the endothelium on the intersecting line, and OC is less than or equal to 0;
s53, obtaining the values of L00, L88, L000, L180 and Lmax < E > of the cut tube, wherein,
l00 represents the axial distance on the cut pipe from the 0 ° point at the left end to the 0 ° point at the right end of the cut pipe;
l88 represents the axial distance from the 180 DEG point at the left end of the cut pipe to the 180 DEG point at the right end of the cut pipe on the cut rod;
l000 represents the length of a generatrix at the 0-degree point at the left end of the cut pipe;
l180 represents the length of a bus at a 180-degree point at the left end of the cut pipe;
lmax < E > represents the maximum length of the cut tube;
s54, obtaining the longest distance Lmax in the axial direction of the cut pipe, the shortest distance value Lmin in the axial direction of the cut pipe and the axial distance L of the left node and the right node of the cut pipe.
8. The method for automated drawing processing of intersecting lines of structural pipes according to claim 7, wherein the method for reading data and generating a complete drawing in step S6 comprises:
s61, storing the obtained result in S54 in the custom attribute of the main part in a value type mode;
s62, reading corresponding data in a complete drawing sheet by using a corresponding picture frame template and displaying the corresponding data in the drawing;
s63, typesetting the drawing, moving the original component drawing which is not needed to the drawing picture frame, and generating a component drawing;
and S64, automatically adjusting the drawing view proportion according to the drawing frame size and the length of each pipe diameter so as to match the drawing with a proper size.
9. The automated map-making process of a structural tube intersection line of claim 8, wherein: binding a footprint pipe required to be provided with a drawing as a member in step S11, cutting the shape of the footprint pipe in step S12 to pre-process the shape of the footprint pipe, connecting the crossed parts of the pipe sections in an assembly cutting mode during pre-processing, and avoiding the components of the crossed parts by adopting field welding or not adding welding in the connecting process so as to determine the connecting relationship; in step S3, the method further includes processing the acquired component model data to acquire a spatial curve function corresponding to the footprint line and the bevel angle thereof; in S23, footprint pipe information is obtained, and the intersection position and the eccentric distance of the intersecting axis are obtained, where the footprint pipe information at least includes one or more parameter information of pipe diameter wall thickness, section profile, part pipe intersecting the main pipe, and the central point, starting point, and end point of the footprint pipe.
10. The method of claim 9, wherein obtaining the spatial curve function corresponding to the footprint line and the bevel angle thereof requires obtaining the skin cut value and the skin footprint curve of the footprint pipe, wherein the method of obtaining the skin cut value and the skin footprint curve comprises:
s31, acquiring a function of the dihedral angle in the unfolding direction, and acquiring a corresponding bevel angle function and a port angle function through the function of the dihedral angle in the unfolding direction;
s32, obtaining an edge curve of the footprint pipe according to the slope angle function and the port angle function in the step S31, and obtaining a mathematical model of coordinates of any point of the footprint pipe, wherein in the mathematical model, when the coordinates of any point are needed, the coordinates can be obtained by inputting corresponding parameters through a corresponding function;
and S33, obtaining the cutting value and the footprint curve of the outer skin according to the edge angle and the bevel angle of the outer skin of the footprint pipe in the edge curve of the footprint pipe.
11. The method for automated graphical representation of a intersecting line of structural tubes as claimed in claim 10, wherein step S4 further comprises:
and drawing a frame line of the middle section of the pipe according to the acquired data of the footprint pipe, drawing an inner diameter curve of the cutting end of the footprint pipe, namely an inner skin footprint line curve, and drawing an outer diameter curve according to the acquired outer skin cutting value and the outer skin footprint curve.
12. The method for automated drawing processing of intersecting lines of structural tubes according to claim 11, wherein the step S5 of outputting data further comprises obtaining footprint tube data according to the obtained component information of the component drawing model and the information of inner and outer skin footprint lines of the footprint tube, and specifically comprises:
acquiring the data of R00 and R180 and the data of S180 of the footprint pipe,
wherein, R00 represents the axial distance between the 0 degree point of the footprint pipe and the intersected node of the main rod and the cut pipe;
r180 represents the axial distance from a 180-degree point of the footprint to the intersected node of the main rod and the cut pipe;
s-180 represents the distance from the center of the footprint tube to the perpendicular line of the central axis of the tube to be cut,
wherein, the upper part of the cut pipe is positive, and the lower part is negative;
and generating a footprint data table according to the acquired footprint management data, and adjusting the position according to the drawing view position.
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| CN103389081A (en) * | 2013-07-18 | 2013-11-13 | 中国二十二冶集团有限公司 | Method for positioning intersecting mouth space of pipe truss secondary rod |
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