CN112446090B - CAD-based ship plate bevel drawing method and device - Google Patents
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Abstract
The invention discloses a CAD-based ship plate bevel drawing method, which comprises the steps of starting a CAD program interface; the program interface is provided with an input frame for a user to input the ship plate thickness parameter, six groove commands for the user to select, a section code selection frame for the user to select, an amplification factor selection frame for the user to select the amplification factor and a proportion selection frame for the user to select the printing proportion; the method comprises the steps of obtaining a ship plate thickness parameter input by a user, obtaining a section code number selected by the user, obtaining a target groove command clicked by the user, obtaining a magnification factor selected by the user, obtaining a printing proportion selected by the user, drawing a groove application diagram corresponding to the target groove command, generating a section code number mark right above the groove application diagram, generating a drawing proportion mark right below the section code number mark, and generating an amplified diagram amplified by the magnification factor. According to the invention, after the plate data is input, the groove application diagram can be automatically drawn and marked.
Description
Technical Field
The invention relates to groove drawing, in particular to a CAD-based ship plate groove drawing method and device.
Background
In the prior art, departments manufacture ship plate process flow cards, grooves of welding with different plate thicknesses are required to be drawn, and the groove patterns are required to meet the requirements of specific rules formulated by department welding process staff. The groove pattern is divided into two groove connection states, the independent groove states are sometimes required to be amplified and drawn, but the size requirement numerical value is not too large in terms of simple manufacturing difficulty, the drawing rule of the groove is often seen when the groove pattern is drawn manually, more time for drawing the pattern and marking the size is required, the process is complicated, more than twenty minutes are required for independently completing one groove pattern, the efficiency is low, and particularly, the error is easy to occur under the emergency condition.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the CAD-based ship plate bevel drawing method and the CAD-based ship plate bevel drawing device. In order to achieve the technical purpose, the invention adopts the following technical scheme: a CAD-based ship plate bevel drawing method comprises the steps of,
step one, starting a CAD program interface;
the program interface is provided with an input frame for a user to input the ship plate thickness parameter, six groove commands for the user to select, a section code selection frame for the user to select, an amplification factor selection frame for the user to select the amplification factor and a proportion selection frame for the user to select the printing proportion;
wherein,,
the ship plate thickness parameters comprise thin plate thickness and thick plate thickness;
the six groove commands are respectively in one-to-one correspondence with six groove application graphs;
the section code selection frame is used for a user to select one code in the L1-L1 section, the L2-L2 section and the L3-L3 section;
the printing proportion is used for printing the groove application graph according to the corresponding proportion;
step two, acquiring the ship plate thickness parameter input by a user, acquiring a section code number selected by the user, acquiring a target groove command clicked by the user, acquiring a magnification factor selected by the user, acquiring a printing proportion selected by the user, drawing a groove application diagram corresponding to the target groove command, generating a section code number identifier directly above the groove application diagram, generating a drawing proportion identifier directly below the section code number identifier, and generating a magnified image magnified by the magnification factor, wherein the size parameter on the magnified image is the same as the size parameter on the groove application diagram;
the target groove command is one of six groove commands.
Further, the six groove commands are respectively: left thin and right thick groove, left Bao Pokou, right thick groove, left thick and right thin groove, left thick groove and right thin groove.
A CAD-based ship plate bevel drawing system comprises,
the starting device is used for starting the CAD program interface; the program interface is provided with an input frame for a user to input the ship plate thickness parameter, six groove commands for the user to select, a section code selection frame for the user to select, an amplification factor selection frame for the user to select the amplification factor and a proportion selection frame for the user to select the printing proportion; wherein the ship plate thickness parameter comprises a thin plate thickness and a thick plate thickness; the six groove commands are respectively in one-to-one correspondence with six groove application graphs; the section code selection frame is used for a user to select one code in the L1-L1 section, the L2-L2 section and the L3-L3 section; the printing proportion is used for printing the groove application graph according to the corresponding proportion;
the acquisition and drawing device is used for acquiring the ship plate thickness parameter input by a user, acquiring a section code number selected by the user, acquiring a target groove command clicked by the user, acquiring a magnification factor selected by the user, acquiring a printing proportion selected by the user, drawing a groove application diagram corresponding to the target groove command, generating a section code number mark right above the groove application diagram, generating a drawing proportion mark right below the section code number mark, and generating a magnified image magnified by the magnification factor, wherein the size parameter on the magnified image is the same as the size parameter on the groove application diagram; the target groove command is one of six groove commands.
In summary, the present invention achieves the following technical effects:
the invention displays the data input frame and the selection frame on the program interface, can facilitate manual data input, and can directly select the required command. According to the invention, a third generation development tool VBA supported by AutoCAD is used as a secondary development programming language, and a secondary development application program is compiled according to the actual requirement of the ship plate welding groove, so that the parameterization and the programming of the welding groove graph drawing and the dimension marking are realized. The final graph can be quickly and automatically obtained by only inputting the thickness of the thin plate and the thick plate, selecting the code number, the printing proportion and the magnification of the cross section, or adopting related default options and then according to the corresponding welding groove command. The groove connection in different forms is placed in a program, manual judgment is not needed, and groove application diagrams conforming to preset rules are automatically drawn according to the plate thickness and the plate thickness difference and marked.
Drawings
FIG. 1 is a left Bao Youhou command drawing graph according to rule 1;
FIG. 2 is a diagram of a left Bao Youhou command drawn according to rule 2;
FIG. 3 is a diagram of left Bao Youhou command drawing according to rule 3;
FIG. 4 is a left Bao Youhou command drawing graph according to rule 4;
FIG. 5 is a graph of left thin commands drawn according to rule 1;
FIG. 6 is a graph of a right thickness command drawn according to rule 1;
FIG. 7 is a schematic diagram of a program interface;
FIG. 8 is a flow chart of a drawing method;
fig. 9 is a decision and selection rule flow chart.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Examples:
a CAD-based ship plate bevel drawing method is used for automatically drawing different bevel graphs. The grooves are connected in various modes, such as groove connection between two plates, and groove arrangement at one end of one plate.
First, 4 drawing rules are introduced for the left Bao Youhou, wherein the 4 drawing rules are formulated in advance by welding process personnel, and in the embodiment, the drawing rules are directly called. The 4 drawing rules correspond to 6 different groove application graphs, all conditions used in daily work are included, and the 6 groove application graphs are drawn and stored in advance as callable elements, so that subsequent drawing and calling are facilitated.
In practical application, the grooves are divided into two types, namely, the grooves formed between 2 plates are connected, and the grooves at one end of 1 plate can be divided into: the 6 modes of left Bao Youhou, left thick and right thin, left thin (groove on right), right thick (groove on left), left thick (groove on right) and right thin (groove on left) can generate 4 application graphs according to 4 rules in each mode, and 24 application graphs can be covered in the 6 application graphs, so the 6 application graphs are based in the embodiment.
In the following, 4 drawing rules are described by taking "left thin and right thick" as an example, and referring to fig. 1 to 4, in this embodiment, the thickness of the thin plate is defined by a boundary line of 22mm, and the thickness difference is defined by a boundary line of 4 mm:
rule 1 (fig. 1): the thickness of the thin plate is less than or equal to 22, and the thickness of the thick plate-the thickness of the thin plate is less than 4;
rule 2 (fig. 2): the thickness of the thin plate is less than or equal to 22, and the thickness of the thick plate-the thickness of the thin plate is more than or equal to 4;
rule 3 (fig. 3): sheet thickness >22, thick sheet thickness-sheet thickness <4;
rule 4 (fig. 4): the thickness of the thin plate is more than 22, and the thickness of the thick plate-the thickness of the thin plate is more than or equal to 4;
the left thick, right thin, left thin, right thick, left thick and right thin are also drawn according to the above 4 rules (not shown), except that the groove position of the thin thick plate is changed left and right at the original rule position, and then, taking rule 1 as an example, the drawing of "left thin" according to rule 1 is shown in fig. 5, and the drawing of "right thick" according to rule 1 is shown in fig. 6. The remaining figures are omitted.
The size parameters in fig. 1-6 are initial parameters that can be modified based on subsequent sizes. In actual practice, the value of the dividing line may be modified, and in this embodiment, only the value used by the company is used as a reference. The angle data in the graph is directly referenced in the program or automatically calculated according to the rules.
According to the above, no matter the connection between 2 plates or the arrangement of 1 plate, the groove application chart can be drawn according to the above 4 rules, that is, the samples of the total 6 groove application charts:
the first type is left thin and right thick, and is divided into left thin and right thick grooves (drawn according to 4 rules and shown in fig. 1-4), left Bao Pokou (drawn according to rule 1 and shown in fig. 5 and drawn according to rules 2-4), and right thick grooves (drawn according to rule 1 and shown in fig. 6 and drawn according to rules 2-4);
the second type is left thick and right thin, and is divided into left thick and right thin grooves (drawing according to 4 rules is omitted, and the thin thick plates in fig. 1-4 are exchanged), left thick grooves (drawing according to 4 rules is omitted, and the result of drawing rule 1 is obtained by transferring the medium plate in fig. 6 to the left), and right Bao Pokou (drawing according to 4 rules is omitted, and the result of drawing rule 1 is obtained by transferring the thin plate in fig. 5 to the right).
After the welding process personnel specify the rules, this can be invoked in this embodiment.
Next, the method used in the present invention will be described:
a CAD-based ship plate bevel drawing method, as shown in fig. 8, comprises the following steps:
step one, starting a CAD program interface, wherein an input frame for inputting a ship plate thickness parameter by a user, six groove commands for the user to select and a section code selection frame for the user to select are displayed on the program interface, the ship plate thickness parameter comprises a thin plate thickness and a thick plate thickness, the six groove commands are respectively in one-to-one correspondence with six groove application diagrams, and one code of an L1-L1 section, an L2-L2 section and an L3-L3 section is selected in the section code selection frame by the user; the six groove commands are respectively as follows: left thin and right thick groove, left Bao Pokou, right thick groove, left thick and right thin groove, left thick groove and right thin groove.
Step two: the method comprises the steps of obtaining a ship plate thickness parameter input by a user, obtaining a section code number selected by the user, obtaining a printing proportion selected by the user, obtaining a magnification factor selected by the user, obtaining a target groove command clicked by the user, and drawing a groove application diagram corresponding to the target groove command, wherein the target groove command is one of six groove commands.
Referring to fig. 9, in the second step, the magnitude relation between the thickness of the thin plate and the first preset value is determined, the thickness difference between the thickness of the thin plate and the thickness of the thick plate is calculated, and then the magnitude relation between the thickness difference and the second preset value is determined; if the thickness of the thin plate is less than or equal to the first preset value and the thickness of the thick plate-the thickness of the thin plate is less than the second preset value, automatically calling rule 1 by the system; if the thickness of the thin plate is less than or equal to a first preset value and the thickness of the thick plate-the thickness of the thin plate is more than or equal to a second preset value, automatically calling rule 2 by the system; if the thickness of the thin plate is greater than the first preset value and the thickness of the thick plate-the thickness of the thin plate is less than the second preset value, automatically calling a rule 3 by the system; if the thickness of the thin plate is larger than the first preset value, and the thickness of the thick plate-the thickness of the thin plate is larger than or equal to the second preset value, the system automatically calls rule 4.
The system acquires 2 data of the thin plate and the thick plate, judges the size relation between the thickness of the thin plate and a first preset value, in the embodiment, the first preset value takes the thickness difference of 4mm as an example, the system judges the size relation between the thickness of the thin plate and the thickness of 22mm, calculates the thickness difference between the thin plate and the thick plate, judges the size relation between the thickness difference and the thickness of 4mm, compares the two size relations with the size relation in 4 rules, and selects the rule to call when the two size relations meet a certain rule.
Specifically, the user opens the CAD start program interface, and in conjunction with fig. 7, there are 2 input boxes on the program interface: the system comprises a thin plate thickness input frame and a thick plate thickness input frame, wherein the thin plate thickness input frame and the thick plate thickness input frame are used for inputting thickness data of a plate, and a user needs to input the two data into the system to calculate thickness difference and judge which rule is selected for drawing subsequently; there are also 6 commands on the interface: left thin and right thick groove, left Bao Pokou, right thick groove, left thick and right thin groove, left thick groove, right Bao Pokou, corresponding to 6 groove application diagrams. Further, the 6 groove application diagrams are the groove application diagrams described above, and are not described herein.
When the system judges the size relation between the thickness of the thin plate and 22mm and the size relation between the thickness difference and 4mm, one rule is directly selected for calling, and then a certain command selected by a user is combined, and the graph under the command is combined with the rule to draw a final graph.
Besides the drawing graphics, a section code selection frame is displayed on the program interface, the options are 3, and the section code selection frame is divided into three sections of L1-L1 section, L2-L2 section and L3-L3 section, which correspond to three position sections of the plate respectively, any one of the 3 codes is selected in the selection frame by a user, and after the selection, the option is marked on the groove application graphics after clicking the command. When not selected, the code defaults to the L1-L1 profile, i.e., L1-L1 as shown in FIG. 7.
After the user inputs data, selects a profile code and clicks one command, the CAD automatically calls a groove application diagram corresponding to the target groove command according to the plate thickness, the thickness difference and the command, and changes the size parameter on the initial application diagram into the existing parameter to finish drawing of the groove application diagram.
For example, when the user inputs a command of 23 thin plate thickness and 25 thick plate thickness, selects an L1-L1 section, and clicks left Bao Youhou, the system calculates that the thin plate thickness is greater than 22 and the thickness difference is less than 4, and the system automatically selects rule 3 to draw, and the drawn groove application diagram is shown in fig. 3. When the data 23 and the data 25 are changed to 26 and 27, the parameters in the graph are changed to data (not shown) corresponding to 26 and 27.
For another example, the user inputs the commands of 10 thin plate thickness, 12 thick plate thickness, selecting L1-L1 section, clicking left Bao Pokou, the system automatically selects rule 1 to draw, and the drawn groove application diagram is shown in fig. 5.
Further, the method further comprises an amplifying function: the program interface is displayed with an amplifying factor selection frame for a user to select the amplifying factor, the amplifying factor is used for drawing after amplifying according to the amplifying factor, the drawn graph is called an amplifying graph, and the size parameter on the amplifying graph is the same as the size parameter on the groove application graph, namely, the amplifying graph only amplifies the graph, but does not change the size parameter.
Specifically, as shown in fig. 7, the user selects the magnification factor on the interface, draws and enlarges the graph in cooperation with the groove application graph command, and the generated graph only enlarges the whole and does not change the size parameter. As shown in fig. 1, the left graph in the graph is a drawn groove application graph, the right graph is an enlarged graph drawn by the same parameters and groove application commands after the magnification is selected, and the size parameters of the two graphs are the same and are not changed. Fig. 2-6 do not show an enlarged schematic view. The magnification on the interface is set to 1, 2, 3.
In addition, a printing proportion selection frame is arranged on the program interface, and when the program interface is used for drawing, the printing proportion characters are directly written below the section code numbers in the groove application diagram, so that the groove application diagram is printed according to the corresponding proportion. When not selected, the print scale defaults to an "out-of-scale" designation.
After drawing is completed, the program can be exited by clicking an exit command on the program interface.
Finally, in another embodiment, a CAD-based ship plate bevel drawing system is provided, comprising,
the starting device is used for starting the CAD program interface; the program interface is provided with an input frame for a user to input the ship plate thickness parameter, six groove commands for the user to select, a section code selection frame for the user to select, an amplification factor selection frame for the user to select the amplification factor and a proportion selection frame for the user to select the printing proportion; wherein the ship plate thickness parameter comprises a thin plate thickness and a thick plate thickness; the six groove commands are respectively in one-to-one correspondence with six groove application graphs; the section code selection frame is used for a user to select one code in the L1-L1 section, the L2-L2 section and the L3-L3 section; the printing proportion is used for printing the groove application graph according to the corresponding proportion;
the acquisition and drawing device is used for acquiring the ship plate thickness parameter input by a user, acquiring a section code number selected by the user, acquiring a target groove command clicked by the user, acquiring a magnification factor selected by the user, acquiring a printing proportion selected by the user, drawing a groove application diagram corresponding to the target groove command, generating a section code number mark right above the groove application diagram, generating a drawing proportion mark right below the section code number mark, and generating a magnified image magnified by the magnification factor, wherein the size parameter on the magnified image is the same as the size parameter on the groove application diagram; the target groove command is one of six groove commands.
According to the invention, a third generation development tool VBA supported by AutoCAD is used as a secondary development programming language, and a secondary development application program is compiled according to the actual requirement of the ship plate welding groove, so that the parameterization and the programming of the welding groove graph drawing and the dimension marking are realized. The final graph can be quickly and automatically obtained by only inputting the thickness of the thin plate and the thick plate, selecting the code number, the printing proportion and the magnification of the cross section, or adopting related default options and then according to the corresponding welding groove command. The groove connection in different forms is placed in a program, manual judgment is not needed, and groove application diagrams conforming to preset rules are automatically drawn according to the plate thickness and the plate thickness difference and marked.
The parameterized ship plate groove procedure can accurately and conveniently solve the problem of drawing the ship plate groove graph, and has strong practicability and easy operability. Through the use effect of this enterprise for nearly annual, technicians obviously experience that secondary development brings high-efficient, the light of accurate completion work, and the application of this procedure can shorten the work that originally takes several ten minutes to several seconds, can lay good foundation for the enterprise to intelligent manufacturing orientation, and its design thinking also can supply other enterprises that have similar demands to reference.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical principles of the present invention are within the scope of the technical solutions of the present invention.
Claims (3)
1. A CAD-based ship plate bevel drawing method is characterized in that: comprises 4 drawing rules including rule 1, rule 2, rule 3 and rule 4,
step one, starting a CAD program interface;
the program interface is provided with an input frame for a user to input the ship plate thickness parameter, six groove commands for the user to select, a section code selection frame for the user to select, an amplification factor selection frame for the user to select the amplification factor and a proportion selection frame for the user to select the printing proportion;
wherein,,
the ship plate thickness parameters comprise thin plate thickness and thick plate thickness;
the six groove commands are respectively in one-to-one correspondence with six groove application graphs;
the section code selection frame is used for a user to select one code in the L1-L1 section, the L2-L2 section and the L3-L3 section;
the printing proportion is used for printing the groove application graph according to the corresponding proportion;
step two, acquiring the ship plate thickness parameter input by a user, acquiring a section code number selected by the user, acquiring a target groove command clicked by the user, acquiring a magnification factor selected by the user, acquiring a printing proportion selected by the user, drawing a groove application diagram corresponding to the target groove command, generating a section code number identifier directly above the groove application diagram, generating a drawing proportion identifier directly below the section code number identifier, and generating a magnified image magnified by the magnification factor, wherein the size parameter on the magnified image is the same as the size parameter on the groove application diagram;
wherein the target groove command is one of six groove commands;
in the second step, judging the magnitude relation between the thickness of the thin plate and the first preset value, calculating the thickness difference between the thickness of the thin plate and the thickness of the thick plate, and judging the magnitude relation between the thickness difference and the second preset value; directly selecting one rule for calling, and then combining a certain command selected by a user, and combining the graph under the command with the rule to draw a final graph; specifically, if the thickness of the thin plate is less than or equal to a first preset value, and the thickness of the thick plate-the thickness of the thin plate is less than a second preset value, automatically calling rule 1 by the system; if the thickness of the thin plate is less than or equal to a first preset value and the thickness of the thick plate-the thickness of the thin plate is more than or equal to a second preset value, automatically calling rule 2 by the system; if the thickness of the thin plate is greater than the first preset value and the thickness of the thick plate-the thickness of the thin plate is less than the second preset value, automatically calling a rule 3 by the system; if the thickness of the thin plate is larger than the first preset value, and the thickness of the thick plate-the thickness of the thin plate is larger than or equal to the second preset value, the system automatically calls rule 4.
2. The CAD-based ship plate bevel drawing method of claim 1, wherein: the six groove commands are respectively as follows: left thin and right thick groove, left Bao Pokou, right thick groove, left thick and right thin groove, left thick groove and right thin groove.
3. The utility model provides a ship board bevel drawing system based on CAD which characterized in that: the system is applied to the CAD-based ship plate bevel drawing method according to claim 1, which comprises the following steps of,
the starting device is used for starting the CAD program interface; the program interface is provided with an input frame for a user to input the ship plate thickness parameter, six groove commands for the user to select, a section code selection frame for the user to select, an amplification factor selection frame for the user to select the amplification factor and a proportion selection frame for the user to select the printing proportion; wherein the ship plate thickness parameter comprises a thin plate thickness and a thick plate thickness; the six groove commands are respectively in one-to-one correspondence with six groove application graphs; the section code selection frame is used for a user to select one code in the L1-L1 section, the L2-L2 section and the L3-L3 section; the printing proportion is used for printing the groove application graph according to the corresponding proportion;
the acquisition and drawing device is used for acquiring the ship plate thickness parameter input by a user, acquiring a section code number selected by the user, acquiring a target groove command clicked by the user, acquiring a magnification factor selected by the user, acquiring a printing proportion selected by the user, drawing a groove application diagram corresponding to the target groove command, generating a section code number mark right above the groove application diagram, generating a drawing proportion mark right below the section code number mark, and generating a magnified image magnified by the magnification factor, wherein the size parameter on the magnified image is the same as the size parameter on the groove application diagram; the target groove command is one of six groove commands.
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| 基于Auto_CAD二次开发的管系开孔技术研究;肖德明;《中国造船》;65-70 * |
| 基于中间平台的船舶CAD_CAE模型转换研究;朱苏;《造船技术》(第6期);44-47 * |
| 快捷、方便的批量工艺流转卡编制程序;张文铭;《机械工程师》;5-9 * |
| 结构件制造CAD系统的研制;苟在彦;《机电工程技术》;第35卷(第6期);94-116 * |
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