CN112906131B - Automatic plotting method for aircraft fuel oil pipeline - Google Patents
Automatic plotting method for aircraft fuel oil pipeline Download PDFInfo
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- CN112906131B CN112906131B CN202110158959.8A CN202110158959A CN112906131B CN 112906131 B CN112906131 B CN 112906131B CN 202110158959 A CN202110158959 A CN 202110158959A CN 112906131 B CN112906131 B CN 112906131B
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Abstract
The invention discloses an automatic plotting method for an aircraft fuel pipeline, which comprises the following steps: s1, a standardized and standardized standard pipeline port model base is established in advance; s2, acquiring parameter information of pipeline design; s3, automatically generating a pipeline according to parameter information of pipeline design; s4, analyzing the combination characteristics of the pipeline and the standard pipeline port, and calculating the movement parameters according to the combination characteristics of the pipeline and the standard pipeline port; s5, automatically combining port models in a pipeline and standard pipeline port model library according to the movement parameters; and S6, fixing the combined model to complete pipeline drawing. The invention provides an automatic drawing method for an aircraft fuel pipeline, which utilizes an automatic interface provided by three-dimensional modeling tool software to automatically complete the processes of establishing a pipeline central line, expanding the central line into a coaxial curved surface, thickening the coaxial curved surface into a pipeline, creating a pipeline port, merging the pipeline and the pipeline port and the like in the tool software, and completes the creation of a three-dimensional model of the aircraft fuel pipeline.
Description
Technical Field
The invention relates to the technical field of design of aircraft fuel pipelines, in particular to an automatic plotting method for an aircraft fuel pipeline.
Background
In designing an aircraft fuel pipeline, tool software is typically used to create a three-dimensional model of the fuel pipeline. The process of establishing the model comprises the steps of establishing a pipeline central line, expanding the central line into a coaxial curved surface, thickening the coaxial curved surface into a pipeline, establishing a pipeline port, combining the pipeline and the pipeline port and the like. These processes are all performed manually, requiring a great deal of labor and time.
Disclosure of Invention
Aiming at the defects in the prior art, the automatic plotting method for the aircraft fuel pipeline provided by the invention solves the problem that a large amount of labor and time are consumed for designing the aircraft fuel pipeline.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that: an automatic drawing method for an aircraft fuel pipeline comprises the following steps:
s1, a standardized and standardized standard pipeline port model base is established in advance;
s2, acquiring parameter information of pipeline design;
s3, automatically generating a pipeline according to the parameter information of the pipeline design;
s4, analyzing the combination characteristics of the pipeline and the standard pipeline port, and calculating the movement parameters according to the combination characteristics of the pipeline and the standard pipeline port;
s5, automatically combining port models in a pipeline and standard pipeline port model library according to the mobile parameters;
and S6, fixing the combined model to complete pipeline drawing.
Further: the standard pipeline port model in the standard pipeline port model library in the step S1 includes three-dimensional information and merging characteristics of the pipeline port.
Further: the parameter information in the step S2 comprises a pipeline central line, a pipeline inner diameter, a pipeline thickness and a standard pipeline port model corresponding to each pipeline port.
Further: the specific steps of the step S3 are as follows: and calling related interfaces of the tool software, expanding the central line of the pipeline into a coaxial curved surface according to the inner diameter of the pipeline, and thickening the coaxial curved surface into a pipeline according to the thickness of the pipeline.
Further: the merging characteristics of the pipelines in the step S4 comprise a pipeline port central coordinate P 1 And the direction of merging of the pipe ports
The merging characteristic of the standard pipeline port comprises a merging surface central coordinate P of the model 2 Merging direction of model
The moving parameters comprise a rotation matrix R which rotates from the model merging direction to the pipeline port selecting direction and a translation vector T which translates from the model center coordinate to the pipeline port center coordinate;
the calculation formula of the rotation matrix R from the model merging direction to the pipeline port selection direction is as follows:
the calculation formula of the translation vector T from the central coordinate of the model to the central coordinate of the pipeline port is as follows:
P 2 *R+T＝P 1 。
further: the step S5 specifically comprises the following steps: and extracting the standard pipeline port model used by each pipeline port from the standard pipeline port model library, calling a relevant interface of tool software according to the moving parameter of each used standard pipeline port, and moving the standard pipeline port model to a correct position to complete the combination of the pipeline port and the standard pipeline port model.
Further: the step S6 specifically includes: and after all pipeline ports of the pipeline are combined with the corresponding standard pipeline port models, automatically storing the complete model as a model file with unchangeable relative positions, and completing pipeline drawing.
The beneficial effects of the invention are as follows: the invention provides an automatic drawing method for an aircraft fuel pipeline, which utilizes an automatic interface provided by three-dimensional modeling tool software to automatically complete the processes of establishing a pipeline central line, expanding the central line into a coaxial curved surface, thickening the coaxial curved surface into a pipeline, creating a pipeline port, merging the pipeline and the pipeline port and the like in the tool software, and completes the creation of a three-dimensional model of the aircraft fuel pipeline.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
As shown in fig. 1, an automatic drawing method for an aircraft fuel pipeline comprises the following steps:
s1, a standardized and standardized standard pipeline port model base is established in advance;
although different conduits may have different conduit ports, in aircraft fuel conduit designs, the conduit ports often used are typically common components of standard size and construction. Each common pipe port is separately generated as a standard pipe port model. Each standard pipe port model contains three-dimensional information and merged features of the pipe port.
S2, acquiring parameter information of pipeline design;
the parameter information of the pipeline design can be input through a user interface or a text mode. The parameter information of the pipeline design comprises a pipeline central line, a pipeline inner diameter, a pipeline thickness and a standard pipeline port model corresponding to each pipeline port.
S3, automatically generating a pipeline according to parameter information of pipeline design;
and calling related interfaces of the tool software, expanding the central line of the pipeline into a coaxial curved surface according to the inner diameter of the pipeline, and thickening the coaxial curved surface into a pipeline according to the thickness of the pipeline.
S4, analyzing the combination characteristics of the pipeline and the standard pipeline port, and calculating the movement parameters according to the combination characteristics of the pipeline and the standard pipeline port;
the merged characteristics of the pipeline ports include a pipeline port center coordinate P 1 Merging direction of pipe ports
The merging characteristic of the standard pipeline port model comprises the merging surface center coordinate P of the model 2 Merging directions of models
The shift parameters include a rotation matrix R representing a rotation from the model merge direction to the pipeline port selection direction, a translation vector T translating from the model center coordinates to the pipeline port center coordinates. According to
Calculating a rotation matrix R according to P 2 *R+T＝P 1 A translation vector T is calculated.
S5, automatically combining port models in a pipeline and standard pipeline port model library according to the mobile parameters;
and extracting the standard pipeline port model used by each pipeline port from the standard pipeline port model library, calling a relevant interface of tool software according to the moving parameter of each used standard pipeline port, and moving the standard pipeline port model to a correct position to complete the combination of the pipeline port and the standard pipeline port model.
And S6, fixing the combined model to complete pipeline drawing.
And after all pipeline ports of the pipeline are combined with the corresponding standard pipeline port models, automatically storing the complete model as a model file with unchangeable relative positions to finish pipeline drawing.
Claims (5)
1. An automatic drawing method for an aircraft fuel pipeline is characterized by comprising the following steps:
s1, a standardized and standardized standard pipeline port model base is established in advance;
s2, acquiring parameter information of pipeline design;
s3, automatically generating a pipeline according to parameter information of pipeline design;
the specific steps of the step S3 are as follows: calling related interfaces of tool software, expanding the central line of the pipeline into a coaxial curved surface according to the inner diameter of the pipeline, and thickening the coaxial curved surface into a pipeline according to the thickness of the pipeline;
s4, analyzing the combination characteristics of the pipeline and the standard pipeline port, and calculating the movement parameters according to the combination characteristics of the pipeline and the standard pipeline port;
the merging characteristic of the pipeline in the step S4 comprises a pipeline port central coordinate P 1 And direction of merging with the pipeline port
The merging characteristic of the standard pipeline port comprises a merging surface center coordinate P of the model 2 Merging direction of model
The moving parameters comprise a rotation matrix R which rotates from a model merging direction to a pipeline port selection direction, and a translation vector T which translates from a model center coordinate to a pipeline port center coordinate;
the calculation formula of the rotation matrix R from the model merging direction to the pipeline port selection direction is as follows:
the calculation formula of the translation vector T translated from the center coordinate of the model to the center coordinate of the pipeline port is as follows:
P 2 *R+T＝P 1 ；
s5, automatically combining port models in a pipeline and standard pipeline port model library according to the movement parameters;
and S6, fixing the combined model to complete pipeline drawing.
2. The aircraft fuel pipeline automatic mapping method according to claim 1, wherein the standard pipeline port model in the standard pipeline port model library in the step S1 contains three-dimensional information and merging characteristics of a pipeline port.
3. The automatic drawing method for the aircraft fuel pipeline according to claim 1, wherein the parameter information in the step S2 comprises a pipeline central line, a pipeline inner diameter, a pipeline thickness and a standard pipeline port model corresponding to each pipeline port.
4. The automatic drawing method for the aircraft fuel pipeline according to claim 1, wherein the step S5 is specifically as follows: and extracting the standard pipeline port model used by each pipeline port from the standard pipeline port model library, calling a relevant interface of tool software according to the moving parameter of each used standard pipeline port, and moving the standard pipeline port model to a correct position to complete the combination of the pipeline port and the standard pipeline port model.
5. The aircraft fuel pipeline automatic plotting method of claim 1, characterized in that the step S6 is specifically: and after all pipeline ports of the pipeline are combined with the corresponding standard pipeline port models, automatically storing the complete model as a model file with unchangeable relative positions, and completing pipeline drawing.
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