Method and system for generating sections in batches based on CATIA

Abstract

The invention discloses a method and system for generating sections in batches based on CATIA, and relates to the technical field of vehicle part design, and the method comprises the steps: displaying a section generation window when a section generation instruction is received, the generated section window comprises a section name selection box, a vehicle type name selection box, a component object selection box, a continuous curve selection box, a starting point selection box and a section position spacing input box; responding to operation of a user on the section name selection box, the vehicle type name selection box and the component object selection box, and determining a section name, a vehicle type name and a component object; responding to the operation of a user on the continuous curve selection box, the starting point selection box and the section position spacing input box, and determining the section position; and generating a plurality of section parts based on the section positions, the section names, the vehicle type names and the component objects, and hanging the section parts on a structure tree of the component objects. According to the method, section parts can be automatically created in batches, the section cutting difficulty is reduced, and the section cutting efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle parts design, and in particular to a method and system for batch generating sections based on CATIA. Background Art

[0002] With the rise of computer-aided design, the manufacturing industry basically relies on three-dimensional design for early product development in the process of product development. In the process of passenger car body-in-white development, the detailed structural design of parts often needs to compare the structure of competitive products and the structure of early development projects, and select the optimal section for corresponding design. Therefore, it is very important to do a good job of section generation in the early stage of development.

[0003] At present, the generation of part sections mainly relies on the section command provided by CATIA, and the parameters of the section are calculated manually. This method has the following disadvantages:

[0004] 1. The operation is more complicated: CATIA's section command is more complicated to operate in some cases. For example, when creating a section view, the user needs to select the correct section position and direction, and selecting the correct work plane for section operation may become complicated.

[0005] 2. The various parameters of the cross section are calculated manually one by one, which is inefficient. Summary of the invention

[0006] The embodiment of the present invention provides a method and system for batch generating sections based on CATIA to solve the technical problem that the existing part sections in the related art mainly rely on the section commands provided by CATIA to generate sections, the operation is relatively complicated, and the section generation efficiency is low.

[0007] In a first aspect, a method for batch generating sections based on CATIA is provided, comprising the following steps:

[0008] When receiving the section generation instruction, the section generation window is displayed, and the section generation window includes a section name selection box, a vehicle model name selection box, a component object selection box, a continuous curve selection box, a starting point selection box, and a section position spacing input box;

[0009] In response to the user's operation on the section name selection box, the vehicle model name selection box and the component object selection box, determining the section name, the vehicle model name and the component object;

[0010] In response to the user's operation on the continuous curve selection box, the starting point selection box and the section position spacing input box, determining the section position;

[0011] Based on the section position, section name, vehicle model name and component object, a plurality of section parts are generated and attached to the structure tree of the component object.

[0012] In some embodiments, after the step of generating a plurality of section parts based on the section position, section name, vehicle model name and component object and attaching them to the structure tree of the component object, the method further includes:

[0013] In response to a section parameter calculation instruction from a user on any section part, the section parameter calculation window is displayed, wherein the section parameter calculation window includes an input type selection box, a section profile selection box, a centroid coordinate system selection box, and a target position selection box;

[0014] In response to the user's operations on the input type selection box, the section profile selection box, the centroid coordinate system selection box and the target position selection box, the section parameters of the section part are calculated and the calculated section parameters are attached to the structure tree of the section part.

[0015] In some embodiments, after the step of calculating the cross-sectional parameters of the cross-sectional part in response to the user's operation on the input type selection box, the cross-sectional profile selection box, the centroid coordinate system selection box, and the target position selection box, and attaching the calculated cross-sectional parameters to the structure tree of the cross-sectional part, the method further includes:

[0016] When receiving a comparison instruction for a plurality of cross-section parts, displaying the comparison window, the comparison window including a cross-section name selection box;

[0017] In response to the user's operation on the section name selection box, the section parameters of all section parts with the same section name and different vehicle model names are obtained, and a comparison list is generated.

[0018] In some embodiments, the cross-sectional parameters include performance parameters and geometric parameters, the performance parameters include enclosed area, material thickness area, moment of inertia and torsional constant, and the geometric parameters include maximum length in U direction and maximum length in V direction.

[0019] In some embodiments, before the step of responding to the section parameter calculation instruction of the user acting on any section part and displaying the section parameter calculation window, wherein the section parameter calculation window includes an input type selection box, a section profile selection box, a centroid coordinate system selection box, and a target position selection box, the step includes:

[0020] Check whether any cross-section part is a closed part;

[0021] If not, create a sketch closed profile of the section part.

[0022] In some embodiments, if not, the step of creating a sketch closed contour of the cross-section part includes:

[0023] In response to a closed sketch instruction applied by a user to the cross-section part, the closed sketch window is displayed, wherein the closed sketch window includes a plurality of sketch element selection boxes;

[0024] In response to a user's operation on a plurality of the sketch element selection boxes, determining a plurality of sketch elements;

[0025] A sketch closed contour of the section part is created based on a plurality of the sketch elements.

[0026] In the second aspect, a system for batch generating sections based on CATIA is provided, comprising:

[0027] A generated section window display module is used to display the generated section window when receiving a generated section instruction, wherein the generated section window includes a section name selection box, a vehicle type name selection box, a component object selection box, a continuous curve selection box, a starting point selection box, and a section position spacing input box;

[0028] A section name response module, used to respond to the user's operation on the section name selection box, the vehicle model name selection box and the component object selection box, and determine the section name, vehicle model name and component object;

[0029] A section position response module, used to respond to the user's operation on the continuous curve selection box, the starting point selection box and the section position spacing input box to determine the section position;

[0030] A section part generation module is used to generate multiple section parts based on the section position, section name, vehicle model name and component object and hang them on the structure tree of the component object.

[0031] In some embodiments, the system for batch generating sections based on CATIA further includes:

[0032] A section parameter calculation window display module, for responding to a section parameter calculation instruction from a user on any section part, and displaying the section parameter calculation window, wherein the section parameter calculation window includes an input type selection box, a section profile selection box, a centroid coordinate system selection box, and a target position selection box;

[0033] The section parameter calculation response module is used to respond to the user's operations on the input type selection box, the section profile selection box, the centroid coordinate system selection box and the target position selection box, calculate the section parameters of the section part, and hang the calculated section parameters on the structure tree of the section part.

[0034] In some embodiments, the system for batch generating sections based on CATIA further includes:

[0035] A comparison window display module, used for displaying the comparison window when receiving a comparison instruction for a plurality of cross-section parts, wherein the comparison window includes a cross-section name selection box;

[0036] The comparison list generation module is used to respond to the user's operation on the section name selection box, obtain the section parameters of all section parts with the same section name and different vehicle model names, and generate a comparison list.

[0037] The beneficial effects brought about by the technical solution provided by the present invention include:

[0038] The embodiment of the present invention provides a method and system for batch generating sections based on CATIA. The method can automatically batch create section parts according to the component objects and section positions selected by the designer. Compared with the traditional mode in which the designer relies on the section command provided by CATIA to cut the section, the difficulty of cutting the section is reduced and the efficiency of cutting the section is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 A flow chart of a method for batch generating sections based on CATIA provided by an embodiment of the present invention;

[0041] Figure 2 A schematic diagram of generating a cross-section window provided by an embodiment of the present invention;

[0042] Figure 3 A schematic diagram of generating a cross-section part provided by an embodiment of the present invention;

[0043] Figure 4 Another schematic diagram of generating a cross-section part provided by an embodiment of the present invention;

[0044] Figure 5 Another flow chart of a method for batch generating sections based on CATIA provided by an embodiment of the present invention;

[0045] Figure 6 A schematic diagram of a cross-section parameter calculation window provided by an embodiment of the present invention;

[0046] Figure 7 A schematic diagram of creating section parameters under a structure tree of a section part provided by an embodiment of the present invention;

[0047] Figure 8 Another flow chart of a method for batch generating sections based on CATIA provided by an embodiment of the present invention;

[0048] Fig. 9 A schematic diagram of a comparison window provided by an embodiment of the present invention;

[0049] Fig.10 A schematic diagram of generating a comparison list provided by an embodiment of the present invention;

[0050] Fig.11 A schematic diagram of a closed sketch window provided by an embodiment of the present invention;

[0051] Fig.12 The embodiment of the present invention provides Fig.12 Sketch of the closed contour;

[0052] Fig.13 Another schematic diagram of a closed sketch window provided by an embodiment of the present invention;

[0053] Fig.14 The embodiment of the present invention provides Fig.14 Sketch of the closed contour;

[0054] Fig.15 A structural diagram of a system for batch generating sections based on CATIA provided by an embodiment of the present invention;

[0055] Fig.16 Another structural diagram of a system for batch generating sections based on CATIA provided by an embodiment of the present invention;

[0056] Fig.17 Another structural diagram of a system for batch generating sections based on CATIA provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] The embodiment of the present invention provides a method for batch generating sections based on CATIA, which can solve the technical problems that the existing part sections mainly rely on the section commands provided by CATIA to generate sections, the operation is relatively complicated, and the section generation efficiency is low.

[0059] See also Figure 1 As shown, an embodiment of the present invention provides a method for batch generating sections based on CATIA, comprising the following steps:

[0060] Step S10, when receiving the section generation instruction, displaying the section generation window, the section generation window includes a section name selection box, a vehicle model name selection box, a component object selection box, a continuous curve selection box, a starting point selection box and a section position spacing input box.

[0061] See also Figure 2 As shown, when receiving the command to generate a section, it is displayed Figure 2 The Generate Section window shown in Figure 2 The Generate Section window shown includes a section name selection box, a vehicle model name selection box, a component object selection box, a continuous curve selection box, a starting point selection box, and a section position spacing input box.

[0062] Step S20, in response to the user's operation on the section name selection box, the vehicle model name selection box and the component object selection box, the section name, the vehicle model name and the component object are determined.

[0063] Step S30, in response to the user's operation on the continuous curve selection box, the starting point selection box and the section position spacing input box, the section position is determined. Wherein, the continuous curve is a relatively typical curve on the component object. For example, if the component object is a beam part, the continuous curve can be an edge line in the length direction of the beam.

[0064] Step S40, generating a plurality of section parts based on the section position, section name, vehicle model name and component object and attaching them to the structure tree of the component object.

[0065] See also Figure 3 and Figure 4 As shown, the section part is named Section_Section Name_Model Name_Time.CATPart.

[0066] The method for batch generating sections based on CATIA in the embodiment of the present invention can automatically batch create section parts according to the component objects and section positions selected by the designer. Compared with the traditional mode in which designers rely on the section commands provided by CATIA to cut sections, the difficulty of cutting sections is reduced and the efficiency of cutting sections is improved.

[0067] As an optional implementation, in one embodiment of the invention, see Figure 5 As shown, after the step of generating a plurality of section parts based on the section position, section name, vehicle model name and component object and attaching them to the structure tree of the component object, it also includes:

[0068] Step S50, in response to the user's section parameter calculation instruction on any section part, the section parameter calculation window is displayed, and the section parameter calculation window includes an input type selection box, a section profile selection box, a centroid coordinate system selection box and a target position selection box.

[0069] See also Figure 6 As shown, select the closed contour type TypeA in the Input Type selection box; select two section contour elements (sketch line contour or filled contour) in the Section Contour selection box; select the axis system in the Centroid Coordinate System selection box; select the section part position in the Target Position selection box (section parameters are created under the structure tree of the section part by default).

[0070] Step S60, in response to the user's operations on the input type selection box, the section profile selection box, the centroid coordinate system selection box and the target position selection box, calculates the section parameters of the section part and attaches the calculated section parameters to the structure tree of the section part.

[0071] The cross-sectional parameters include performance parameters and geometric parameters. The performance parameters include enclosed area, material thickness area, moment of inertia and torsion constant. The geometric parameters include the maximum length in the U direction and the maximum length in the V direction. Figure 7 As shown, in Figure 6 After clicking "Confirm" in the middle, the section parameters will be created under the structure tree of the section part.

[0072] The embodiment of the present invention can quickly calculate the performance parameters and geometric parameters of the cross-section parts without the need for engineers to manually calculate them one by one, thereby improving the design efficiency of designers.

[0073] As an optional implementation, in one embodiment of the invention, see Figure 8 As shown, after the step of calculating the section parameters of the section part in response to the user's operation on the input type selection box, the section profile selection box, the centroid coordinate system selection box and the target position selection box, and attaching the calculated section parameters to the structure tree of the section part, the method further includes:

[0074] Step S70, when receiving a comparison instruction for a plurality of cross-section parts, displaying the comparison window, wherein the comparison window includes a cross-section name selection box;

[0075] See also Fig. 9 As shown, when a comparison instruction for multiple section parts is received, the comparison window is displayed, and the comparison window includes a section name selection box.

[0076] Step S80, in response to the user's operation on the section name selection box, obtain the section parameters of all section parts with the same section name and different vehicle model names, and generate a comparison list.

[0077] See also Fig.10 As shown, based on the section name BO01, different vehicle models are named AX1 and AX2, which can be generated Fig.10 Comparison list shown.

[0078] The embodiment of the present invention can use the section name as a reference to quickly generate a section parameter comparison report of the same section name of different vehicle models. The comparison report provides a reference for designers and improves their design efficiency.

[0079] As an optional implementation, in an embodiment of the invention, before the step of responding to the section parameter calculation instruction of the user acting on any section part and displaying the section parameter calculation window, wherein the section parameter calculation window includes an input type selection box, a section profile selection box, a centroid coordinate system selection box, and a target position selection box, the step includes:

[0080] Check whether any cross-section part is a closed part;

[0081] If not, create a sketch closed profile of the section part.

[0082] Specifically, if not, the step of creating a sketch closed contour of the cross-section part includes:

[0083] In response to a closed sketch instruction applied by a user to the cross-section part, the closed sketch window is displayed, wherein the closed sketch window includes a plurality of sketch element selection boxes;

[0084] In response to a user's operation on a plurality of the sketch element selection boxes, determining a plurality of sketch elements;

[0085] A sketch closed contour of the section part is created based on a plurality of the sketch elements.

[0086] See also Fig.11 and Fig.12 As shown in the figure, when the sketch element selection box selects the straight line-straight line form, Fig.11 The closed contour of the sketch after the operation of the non-closed part is as follows Fig.12 shown.

[0087] See also Fig.13 and Fig.14 As shown in the figure, when the sketch element selection box selects the line-point form, Fig.13 The closed contour of the sketch after the operation of the non-closed part is as follows Fig.14 shown.

[0088] See also Fig.15As shown, an embodiment of the present invention provides a system for batch generating sections based on CATIA, including: a section generation window display module, a section position response module, a section name response module and a section part generation module.

[0089] The generated section window display module is used to display the generated section window when receiving the generated section instruction. The generated section window includes a section name selection box, a vehicle model name selection box, a component object selection box, a continuous curve selection box, a starting point selection box and a section position spacing input box.

[0090] The section name response module is used to respond to the user's operations on the section name selection box, the vehicle model name selection box and the component object selection box to determine the section name, vehicle model name and component object.

[0091] The section position response module is used to respond to the user's operations on the continuous curve selection box, the starting point selection box and the section position spacing input box to determine the section position.

[0092] The section part generation module is used to generate multiple section parts based on the section position, section name, vehicle model name and component object and hang them on the structure tree of the component object.

[0093] The system for batch generating sections based on CATIA in the embodiment of the present invention can automatically batch create section parts according to the component objects and section positions selected by the designer. Compared with the traditional mode in which designers rely on the section commands provided by CATIA to cut sections, the difficulty of cutting sections is reduced and the efficiency of cutting sections is improved.

[0094] As an optional implementation, in one embodiment of the invention, see Fig.16 As shown, the system for batch generating sections based on CATIA also includes: a section parameter calculation window display module and a section parameter calculation response module.

[0095] The section parameter calculation window display module is used to respond to the section parameter calculation instruction of the user on any section part, and display the section parameter calculation window. The section parameter calculation window includes an input type selection box, a section profile selection box, a centroid coordinate system selection box and a target position selection box.

[0096] See also Figure 6 As shown, select the closed contour type TypeA in the Input Type selection box; select two section contour elements (sketch line contour or filled contour) in the Section Contour selection box; select the axis system in the Centroid Coordinate System selection box; select the section part position in the Target Position selection box (section parameters are created under the structure tree of the section part by default).

[0097] The cross-section parameter calculation response module is used to respond to the user's operations on the input type selection box, the cross-section contour selection box, the centroid coordinate system selection box and the target position selection box, calculate the cross-section parameters of the cross-section part, and hang the calculated cross-section parameters on the structure tree of the cross-section part.

[0098] The cross-sectional parameters include performance parameters and geometric parameters. The performance parameters include enclosed area, material thickness area, moment of inertia and torsion constant. The geometric parameters include the maximum length in the U direction and the maximum length in the V direction. Figure 7 As shown, in Figure 6 After clicking "Confirm" in the middle, the section parameters will be created under the structure tree of the section part.

[0099] The embodiment of the present invention can quickly calculate the performance parameters and geometric parameters of the cross-section parts without the need for engineers to manually calculate them one by one, thereby improving the design efficiency of designers.

[0100] As an optional implementation, in one embodiment of the invention, see Fig.17 As shown, the system for batch generating sections based on CATIA also includes: a comparison window display module and a comparison list generation module.

[0101] The comparison window display module is used to display the comparison window when receiving a comparison instruction for multiple cross-section parts, and the comparison window includes a cross-section name selection box.

[0102] See also Fig. 9 As shown, when a comparison instruction for multiple section parts is received, the comparison window is displayed, and the comparison window includes a section name selection box.

[0103] The comparison list generation module is used to respond to the user's operation on the section name selection box, obtain the section parameters of all section parts with the same section name and different vehicle model names, and generate a comparison list.

[0104] See also Fig.10 As shown, based on the section name BO01, different vehicle models are named AX1 and AX2, which can be generated Fig.10 Comparison list shown.

[0105] The embodiment of the present invention can use the section name as a reference to quickly generate a section parameter comparison report of the same section name of different vehicle models. The comparison report provides a reference for designers and improves their design efficiency.

[0106] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0107] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0108] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A method for batch generating sections based on CATIA, characterized in that: The following steps are involved: When receiving the section generation instruction, the section generation window is displayed, and the section generation window includes a section name selection box, a vehicle model name selection box, a component object selection box, a continuous curve selection box, a starting point selection box, and a section position spacing input box; In response to the user's operation on the section name selection box, the vehicle model name selection box and the component object selection box, determining the section name, the vehicle model name and the component object; In response to the user's operation on the continuous curve selection box, the starting point selection box and the section position spacing input box, determining the section position; Based on the section position, section name, vehicle model name and component object, a plurality of section parts are generated and attached to the structure tree of the component object.

2. The method for batch generating sections based on CATIA according to claim 1, characterized in that: After the step of generating a plurality of section parts based on the section position, section name, vehicle model name and component object and attaching them to the structure tree of the component object, the method further includes: In response to a section parameter calculation instruction from a user on any section part, the section parameter calculation window is displayed, wherein the section parameter calculation window includes an input type selection box, a section profile selection box, a centroid coordinate system selection box, and a target position selection box; In response to the user's operations on the input type selection box, the section profile selection box, the centroid coordinate system selection box and the target position selection box, the section parameters of the section part are calculated and the calculated section parameters are attached to the structure tree of the section part.

3. The method for batch generating sections based on CATIA according to claim 2, characterized in that: After the step of calculating the cross-section parameters of the cross-section part in response to the user's operation on the input type selection box, the cross-section profile selection box, the centroid coordinate system selection box and the target position selection box, and attaching the calculated cross-section parameters to the structure tree of the cross-section part, the method further includes: When receiving a comparison instruction for a plurality of cross-section parts, displaying the comparison window, the comparison window including a cross-section name selection box; In response to the user's operation on the section name selection box, the section parameters of all section parts with the same section name and different vehicle model names are obtained, and a comparison list is generated.

4. The method for batch generating sections based on CATIA according to claim 3, characterized in that: The cross-sectional parameters include performance parameters and geometric parameters. The performance parameters include enclosed area, material thickness area, moment of inertia and torsion constant. The geometric parameters include maximum length in the U direction and maximum length in the V direction.

5. The method for batch generating sections based on CATIA according to claim 2, characterized in that: Before the step of responding to the section parameter calculation instruction of the user acting on any section part and displaying the section parameter calculation window, wherein the section parameter calculation window includes an input type selection box, a section profile selection box, a centroid coordinate system selection box and a target position selection box, the step of: Check whether any cross-section part is a closed part; If not, create a sketch closed profile of the section part.

6. The method for batch generating sections based on CATIA according to claim 5, characterized in that: If not, the step of creating a closed outline of the sketch of the cross-section part includes: In response to a closed sketch instruction applied by a user to the cross-section part, the closed sketch window is displayed, wherein the closed sketch window includes a plurality of sketch element selection boxes; In response to a user's operation on a plurality of the sketch element selection boxes, determining a plurality of sketch elements; A sketch closed contour of the section part is created based on a plurality of the sketch elements.

7. A system for batch generation of sections based on CATIA, characterized in that: include: A generated section window display module is used to display the generated section window when receiving a generated section instruction, wherein the generated section window includes a section name selection box, a vehicle type name selection box, a component object selection box, a continuous curve selection box, a starting point selection box, and a section position spacing input box; A section name response module, used to respond to the user's operation on the section name selection box, the vehicle model name selection box and the component object selection box, and determine the section name, vehicle model name and component object; A section position response module, used to respond to the user's operation on the continuous curve selection box, the starting point selection box and the section position spacing input box to determine the section position; A section part generation module is used to generate multiple section parts based on the section position, section name, vehicle model name and component object and hang them on the structure tree of the component object.

8. The system for batch generating sections based on CATIA according to claim 7, characterized in that: Also includes: A section parameter calculation window display module, for responding to a section parameter calculation instruction from a user on any section part, and displaying the section parameter calculation window, wherein the section parameter calculation window includes an input type selection box, a section profile selection box, a centroid coordinate system selection box, and a target position selection box; The section parameter calculation response module is used to respond to the user's operations on the input type selection box, the section profile selection box, the centroid coordinate system selection box and the target position selection box, calculate the section parameters of the section part, and hang the calculated section parameters on the structure tree of the section part.

9. The system for batch generating sections based on CATIA according to claim 8, characterized in that: Also includes: A comparison window display module, used for displaying the comparison window when receiving a comparison instruction for a plurality of cross-section parts, wherein the comparison window includes a cross-section name selection box; The comparison list generation module is used to respond to the user's operation on the section name selection box, obtain the section parameters of all section parts with the same section name and different vehicle model names, and generate a comparison list.

10. The system for batch generating sections based on CATIA according to claim 8, characterized in that: The cross-sectional parameters include performance parameters and geometric parameters. The performance parameters include enclosed area, material thickness area, moment of inertia and torsion constant. The geometric parameters include maximum length in the U direction and maximum length in the V direction.

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