A method and system for creating a ship equipment interface based on a CATIA platform

Abstract

The application discloses a ship equipment interface creation method and system based on a CATIA platform, and the method comprises the following steps: creating a model body and a parameter design table of the interface, associating key size constraints of the interface with corresponding parameters in the parameter design table to obtain size characteristics, defining a reference coordinate axis, taking the reference coordinate axis as a reference system, and constraining a position center and an orientation of the interface to obtain pose characteristics, creating a feature interface, including an internal component and an input component, associating the model body and the parameter design table in the size characteristics with the internal component, associating the reference coordinate axis in the position characteristics with the input component, and creating or modifying the interface. The application can quickly insert a standard interface in a single part by specifying a position, and can also perform displacement and steering operations on a single interface according to needs, and can also change the standard and specification of the interface by one key, so that the design and modification processes are simplified, the standardization degree and design quality of the equipment interface are improved, and the modeling and maintenance cycle is shortened.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ship three-dimensional design, and particularly relates to a ship equipment interface creation method and system based on a CATIA platform. BACKGROUND

[0002] The ship equipment model is a single part, and the equipment interface is usually modeled together with the equipment body. The interface model and the body model are modeled in a cross manner, and the size and positioning constraints affect each other, which is not conducive to modeling, modification and standardized modeling of the interface. Moreover, large equipment generally has complex structure, large number of interfaces and many types, and manual modeling is very low in efficiency. The system accessories connected with the equipment are usually standard parts, and the standardization and accuracy of the equipment interface are very important. The manually modeled equipment interface can only be checked manually, and the modeling quality and efficiency of complex equipment are difficult to balance. With the advancement of ship comprehensive arrangement, the equipment is often upgraded and modified, and it is very difficult to update the position and specifications of the equipment interface in a timely manner. SUMMARY

[0003] The application aims to provide a ship equipment interface creation method and system based on a CATIA platform, which solves the problems of creating interface models one by one in the equipment modeling process, and the mutual involvement of the interface model and the equipment body model, resulting in low design efficiency, difficult maintenance and modification, and unsatisfactory standardization.

[0004] The technical scheme of the application is as follows:

[0005] A ship equipment interface creation method based on a CATIA platform, comprising:

[0006] creating a model body of the interface; creating a parameter design table of the model body of the interface, associating the key size constraints of the interface with the corresponding parameters in the parameter design table to obtain size features of the interface;

[0007] defining a reference coordinate axis, and taking the X-axis, Y-axis, Z-axis, XY plane, YZ plane and ZX plane of the defined reference coordinate axis as a reference system to constrain the position center and orientation of the interface to obtain pose features of the interface;

[0008] creating a feature interface, the feature interface comprising an internal component and an input component; associating the model body in the size features and the parameter design table with the internal component, and associating the X-axis, Y-axis, Z-axis, XY plane, YZ plane and ZX plane of the reference coordinate axis in the position features with the input component;

[0009] determining the interface pose through the input component of the feature interface and determining the interface specifications through the internal component of the feature interface to create or modify the interface.

[0010] Further, the model ontology of the interface is created according to a standard interface.

[0011] Further, the center point of the reference coordinate axis coincides with the position center of the interface, and the Z axis of the reference coordinate axis coincides with the orientation of the interface.

[0012] A ship equipment interface creation system based on a CATIA platform comprises:

[0013] A size feature module is configured to create a model ontology of the interface, create a parameter design table of the model ontology of the interface, associate the key size constraints of the interface with corresponding parameters in the parameter design table, and obtain size features of the interface.

[0014] A pose feature module is configured to define a reference coordinate axis, constrain the position center and the orientation of the interface based on the X axis, the Y axis, the Z axis, the XY plane, the YZ plane and the ZX plane of the defined reference coordinate axis as a reference system, and obtain pose features of the interface.

[0015] A feature interface module is configured to create a feature interface, wherein the feature interface comprises an internal component and an input component, and the model ontology and the parameter design table in the size features are associated with the internal component, and the X axis, the Y axis, the Z axis, the XY plane, the YZ plane and the ZX plane of the reference coordinate axis in the position features are associated with the input component.

[0016] A creation and modification module is configured to determine the interface pose through the input component of the feature interface, determine the interface specification through the internal component of the feature interface, and create or modify the interface.

[0017] Further, the size feature module creates the model ontology of the interface according to a standard interface.

[0018] Further, in the pose feature module, the center point of the reference coordinate axis coincides with the position center of the interface, and the Z axis of the reference coordinate axis coincides with the orientation of the interface.

[0019] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0020] 1) Parametric modeling is used to control the interface standard and the specification by using a design table parameter (the design table can reuse an existing pipe system accessory design table), which improves the interface modeling efficiency, greatly improves the standardization degree and accuracy of the interface, and the like.

[0021] 2) The interface is integrated in the form of a feature template, each interface only occupies one node and is independent of the equipment body (that is, the change of the equipment body does not affect the position and orientation of the interface), which improves the modularity degree of the equipment model, the model structure is more simple and regular, and the like, and is convenient for later modification and maintenance.

[0022] 3) Interface positioning: the position feature is only associated with the device output port through one coordinate axis, the interface sealing surface is oriented in the same direction as the device port, and the center of the sealing surface coincides with the output end point, so that one-key deployment of the device interface can be achieved;

[0023] 4) Interface positioning modification: interface positioning is real-time constrained by the device output port coordinate axis, and the position and orientation of the device output port coordinate axis are modified, which will synchronously modify the position and orientation of the interface, greatly simplifying the modification process of the interface;

[0024] 5) Interface specification modification: the size of the interface is constrained by the parameter design table, and the size of the interface can be switched one-key without re-modeling, greatly simplifying the modification process of the device interface specification;

[0025] 6) Compared with part assembly, the present application does not generate new reference models during the instantiation process, and does not occupy additional design environment resources. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of a feature interface design process;

[0027] Figure 2 is a schematic diagram of a device interface creation process;

[0028] Figure 3 is a schematic diagram of a device interface modification process;

[0029] Figure 4 is a schematic diagram of a feature flange and its reference coordinate axis;

[0030] Figure 5 is an example diagram of a parameter design table of a feature flange. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0032] The present application is applied to ship equipment modeling, and provides a ship equipment three-dimensional model interface rapid design method and system based on a CATIA platform, which can quickly insert a standard interface in a single part at a specified position, and can also displace and turn the single interface, or one-key change the standard and specification of the interface according to needs, so as to simplify the design and modification process, improve the standardization degree and design quality of the device interface, and shorten the modeling and maintenance cycle.

[0033] The ship equipment three-dimensional model interface rapid design method based on the CATIA platform comprises the following steps:

[0034] 1) The equipment interface specifications are various, but most of the equipment uses standard interfaces, and the interface model is constrained by using standard interface parameters, which can effectively improve the modeling efficiency and accuracy.

[0035] The interface model is parameterized modeling: a mother model is created according to the schematic diagram of the interface standard; the parameter design table of the interface is imported, the key size constraints (such as inner diameter, outer diameter, bolt hole center circle diameter, sealing surface outer diameter, thickness, bolt hole diameter, bolt hole number, etc.) of the interface are associated with the corresponding parameters in the design table, and the interface size is ensured to be consistent with the corresponding item in the design table under any specification, so that the size characteristics of the interface are obtained.

[0036] The mother model includes the model body and the parameter design table; wherein the model body refers to the geometric shape of the mother model, the parameter refers to the design parameter of the model, and the parameter design table refers to the design table of the parameter.

[0037] 2) The equipment output port (Port point) is a coordinate axis with position information and orientation, and the position information of the interface model is integrated into the coordinate axis, so that the interface model can be positioned by using the equipment output port coordinate axis.

[0038] The interface model is split: the interface is usually modeled with the origin as the reference, and a new reference coordinate axis (hereinafter referred to as "coordinate axis A") is defined in the present application, and the X-axis, Y-axis, Z-axis, XY plane, YZ plane and ZX plane of the coordinate axis A are used as the reference system to constrain the sealing surface center, sealing surface orientation, interface bolt hole center angle and other shape characteristics of the interface: the center point of the coordinate axis A is coincided with the center of the sealing surface, the Z-axis is perpendicular to the sealing surface and outward, and the modeling is performed, and then the shape characteristics are constrained to ensure that the center of the sealing surface is always coincided with the center of the coordinate axis A and the orientation is consistent with the Z-axis of the coordinate axis A, so that the position characteristics of the interface are obtained.

[0039] 3) The equipment model is a single part, and the interface model cannot be directly added by assembly.

[0040] The size characteristics and position characteristics of the interface are integrated into the feature template in the present application: a user feature is newly created in the interface model, the model body and the parameter design table of the size characteristics are associated with the internal components, the X-axis, Y-axis, Z-axis, XY plane, YZ plane and ZX plane of the position characteristic coordinate axis A are associated with the input components, the names in the design table parameters (according to the needs, the parameter items such as the diameter and the pressure can be added) are published, and finally the user feature is inserted into the catalog (Catalog), so that a case (hereinafter referred to as "feature interface") of the present application is obtained.

[0041] The application also provides a ship equipment interface creation system based on a CATIA platform, comprising:

[0042] a size feature module, configured to create a model body of the interface, create a parameter design table of the model body of the interface, and associate key size constraints of the interface with corresponding parameters in the parameter design table to obtain size features of the interface;

[0043] a pose feature module, configured to define a reference coordinate axis, and constrain a position center and an orientation of the interface based on the X axis, the Y axis, the Z axis, the XY plane, the YZ plane and the ZX plane of the defined reference coordinate axis as a reference system to obtain pose features of the interface;

[0044] a feature interface module, configured to create a feature interface, wherein the feature interface comprises an internal component and an input component, and the model body and the parameter design table in the size features are associated with the internal component, and the X axis, the Y axis, the Z axis, the XY plane, the YZ plane and the ZX plane of the reference coordinate axis in the position features are associated with the input component;

[0045] a creation and modification module, configured to determine an interface pose through the input component of the feature interface and determine an interface specification through the internal component of the feature interface to create or modify the interface.

[0046] Further, the size feature module creates the model body of the interface according to a standard interface.

[0047] Further, the center point of the reference coordinate axis in the pose feature module coincides with the position center of the interface, and the Z axis of the reference coordinate axis coincides with the orientation of the interface.

[0048] The following takes a flange as an example to further illustrate the equipment interface creation method of the application:

[0049] 1) Design a feature flange, refer to Figure 1 .

[0050] Create a new flange type accessory node;

[0051] Create a position feature: insert a coordinate axis at any position, name it as "coordinate axis A", and perform normal flange modeling or use a mother model of any flange with the same end face standard in a resource library, constrain the size of the flange model based on the X axis, the Y axis, the Z axis, the XY plane, the YZ plane and the ZX plane of the coordinate system A, ensure that the center point of the coordinate axis A coincides with the center of the flange sealing surface, and the Z axis is perpendicular to the flange sealing surface and outward, refer to Figure 4 .

[0052] Create a size feature: insert a parameter design table of the target flange, or directly use a design table of any flange with the same end face standard in the resource library, refer to Figure 5The size of the flange model is associated with the corresponding parameters in the design table;

[0053] Integrated feature template: create a user feature under the flange node, name it feature flange, associate the model body of the size feature, the parameter design table and the internal component, associate the X axis, Y axis, Z axis, XY plane, YZ plane and ZX plane of the position feature coordinate axis A with the input component, and publish the name in the design table;

[0054] Insert the feature template in the catalog.

[0055] 2) Create a device interface flange, see Figure 2 .

[0056] Precondition: device body and device port coordinate axis;

[0057] Create a flange:

[0058] Rename the coordinate axis of the port that needs to create a flange as "coordinate axis A" (ensure that there is only one "coordinate axis A" under the device node);

[0059] Activate the part body of the device body, and instantiate the feature flange under the catalog;

[0060] One-key same name matching of coordinate axis;

[0061] Select the required flange standard specification in the parameter bar;

[0062] The target specification flange can be inserted under the coordinate axis of the port.

[0063] Note: The sealing surface center of the flange is the origin of the port coordinate axis, and the sealing surface direction is consistent with the Z axis.

[0064] 3) Modify the device interface flange, see Figure 3 .

[0065] Precondition: use the device model created by the invention to create an interface flange;

[0066] Modify the flange:

[0067] Flange specification modification: select the specification to be modified in the parameter bar of the flange;

[0068] Flange position modification: modify the coordinates of the origin of the device port coordinate axis;

[0069] Flange orientation modification: rotate the device port coordinate axis to adjust the Z axis orientation.

[0070] Note: the center of the flange sealing surface always coincides with the port coordinate axis origin, and the flange sealing surface always coincides with the port coordinate axis Z axis.

[0071] It should be noted that, according to the needs of implementation, each step / component described in the present application can be split into more steps / components, or two or more steps / components or part of the operation of the steps / components can be combined into a new step / component, to achieve the purpose of the present application.

[0072] Those skilled in the art will readily understand that the above is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for creating ship equipment interfaces based on the CATIA platform, characterized in that, include: Create the interface model body based on the standard interface; create the parameter design table of the interface model body, associate the key dimension constraints of the interface with the corresponding parameters in the parameter design table, and obtain the dimensional features of the interface; Define a reference coordinate axis, and use the X-axis, Y-axis, Z-axis, XY plane, YZ plane, and ZX plane of the defined reference coordinate axis as a reference system to constrain the position center and orientation of the interface, thereby obtaining the pose characteristics of the interface; Create a feature interface, which includes internal components and input components; associate the model body and parameter design table in the size feature with the internal components, and associate the X-axis, Y-axis, Z-axis, XY plane, YZ plane, and ZX plane of the reference coordinate axes in the position feature with the input components; The interface pose is determined by the input components of the feature interface, and the interface specification is determined by the internal components of the feature interface, in order to create or modify the interface.

2. The method for creating ship equipment interfaces based on the CATIA platform according to claim 1, characterized in that, The center point of the reference coordinate axis coincides with the position center of the interface, and the Z-axis of the reference coordinate axis coincides with the orientation of the interface.

3. A ship equipment interface creation system based on the CATIA platform, characterized in that, include: The dimension feature module is used to create the model body of the interface based on the standard interface; it creates the parameter design table of the model body of the interface, associates the key dimension constraints of the interface with the corresponding parameters in the parameter design table, and obtains the dimension features of the interface. The pose feature module is used to define a reference coordinate axis. Using the defined reference coordinate axis's X-axis, Y-axis, Z-axis, XY plane, YZ plane, and ZX plane as reference systems, the position center and orientation of the interface are constrained to obtain the pose features of the interface. The Feature Interface module is used to create a feature interface, which includes internal components and input components. It associates the model body and parameter design table in the size feature with the internal components, and associates the X-axis, Y-axis, Z-axis, XY plane, YZ plane, and ZX plane of the reference coordinate axes in the position feature with the input components. The creation and modification module is used to determine the interface pose through the input components of the feature interface and the interface specification through the internal components of the feature interface, so as to create or modify the interface.

4. The ship equipment interface creation system based on the CATIA platform according to claim 3, characterized in that, In the pose feature module, the center point of the reference coordinate axis coincides with the position center of the interface, and the Z-axis of the reference coordinate axis coincides with the orientation of the interface.

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