CATIA (computer-graphics aided three-dimensional interactive application)-based frame hole site rapid collaborative design method and system

Abstract

The invention relates to the technical field of automobile frames, in particular to a CATIA-based frame hole site rapid collaborative design method and system, after the method is used, the step of obtaining a hole site list can be omitted, hole site sketching design is directly carried out by extracting frame system design environment data, the total modeling time consumption can be optimized by 60% or above, and the modeling efficiency is improved. Not only can the modeling efficiency be improved, but also the labor hour cost can be saved. In addition, the method is only used for checking the total arrangement of the automobile, and the problems that repeated checking is troublesome, laborious and prone to making mistakes can be avoided. According to the method, the defects that in the prior art, a hole site list is obtained firstly and then converted into sketching stretching for hole site design, due to the fact that the number of hole sites of a frame system is large, manual input and output are troublesome and strenuous, and errors are prone to occurring are overcome; according to the method, repeated checking is needed, and the modeling efficiency is low. Therefore, the technical problems that an existing frame hole site design method is prone to reporting errors, poor in modification convenience, low in efficiency and poor in accuracy can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile frames, and in particular to a method and system for rapid collaborative design of frame holes based on CATIA. Background Art

[0002] In the model design stage of a truck, the system designer needs to provide hole requirements to the frame designer before the model is frozen, and complete the hole extraction and output. The usual practice is to measure the hole positions first, and then manually output them to the hole position list. The frame designer obtains the frame hole position information and designs the model; the frame designer designs according to the hole position list. There are usually two design methods:

[0003] ①. Automatically design the point matrix based on the coordinate points in the list; this method is more convenient, but it is prone to interference, overlap and other problems during design. It is not easy to identify the associated dimensions and interference during verification, especially in the later stage of borrowing and design change maintenance. It takes a lot of time to check, so it is not recommended.

[0004] ②. Sketch according to the hole list submitted by the frame system, and then stretch it, such as Figure 3 As shown. Compared with method ①, this method can more easily realize the verification and maintenance of the system and fixed points quickly, and is the mainstream method currently adopted. The disadvantage is that due to the complex structure of the frame system and the large number of installation holes, three-coordinate measurement of each hole is required to obtain a list of all the holes, which is a time-consuming and laborious process. In addition, when reading and inputting sketches for holes, manual recognition is prone to errors, and it takes a lot of time to draw sketches. Therefore, the traditional design method of first obtaining a list of holes and then converting it into a sketch stretch for hole design will have two manual recognition processes that are prone to errors during the recognition process, and the conversion of the hole list will seriously affect the accuracy of the professional system verification. In terms of design quality and design efficiency, it is extremely unfavorable for the rapid response of the truck market.

[0005] Therefore, the existing frame hole design method has the problems of easy interference errors, long verification time, low efficiency and poor accuracy. Summary of the invention

[0006] The purpose of the present invention is to provide a method and system for rapid collaborative design of vehicle frame holes based on CATIA, which can solve the technical problems of the existing vehicle frame hole design methods, such as easy error reporting, long verification time, low efficiency and poor accuracy.

[0007] To achieve the above object, the technical solution of the present invention is as follows:

[0008] The present invention designs a rapid collaborative design method for frame holes based on CATIA, which includes the following steps:

[0009] Frame system design;

[0010] Extract the frame system design environment data, conduct frame system hole position sketch design and publish;

[0011] Confirm the frame system model to determine whether it meets the design and assembly requirements; if yes, proceed to the next step; if not, return to the system hole position sketch design;

[0012] Extract the frame system hole sketch published above, design the holes according to the sketch, and conduct collaborative design through hole transfer;

[0013] Check all the holes of the frame system to determine whether the positions of the holes meet the requirements of the frame system; if yes, proceed to the next step; if not, return to the frame system hole sketch design;

[0014] The frame system design is completed.

[0015] As a preferred solution, when the frame system design is changed, the frame hole position update steps are as follows:

[0016] Copy and publish the frame system hole sketch, upgrade the version, and design and publish the upgraded hole sketch according to the design change requirements;

[0017] Extract the upgraded hole sketch and make a replacement design;

[0018] Check the hole positions of the upgraded frame system to determine whether the positions of the holes meet the frame system requirements; if yes, proceed to the next step; if no, return to the upgraded hole position sketch design;

[0019] Release the engineering data changes after verification is completed.

[0020] As a preferred solution, the design steps of the derivative model are as follows:

[0021] Determine whether there are any changes to the frame system hole positions. If there are no changes, directly copy the published frame system hole position sketch for subsequent design;

[0022] If there are any changes, copy and change the name of the published frame system hole sketch and upgrade the version; design and publish the upgraded hole sketch according to the design change requirements; extract the upgraded hole sketch and replace the design; check the upgraded frame system holes to determine whether the hole positions meet the frame system requirements; if yes, proceed to the next step; if not, return to the upgraded hole sketch design; publish the engineering data changes after the verification is completed.

[0023] The present invention also designs a CATIA-based rapid collaborative design system for frame holes, which includes the following modules:

[0024] Frame design module, used for the design of the frame system itself;

[0025] Hole position sketching module, used to extract frame system design environment data, perform frame system hole position sketching design and publish;

[0026] The model confirmation module is used to confirm the frame system model and determine whether it meets the design and assembly requirements; if yes, it goes to the next step; if not, it returns to the system hole position sketch design;

[0027] The collaborative design module is used to extract the frame system hole sketch published above, design the holes according to the sketch, and conduct collaborative design through hole transfer;

[0028] The hole position checking module is used to check all the hole positions of the frame system to determine whether the positions of the holes meet the requirements of the frame system; if yes, proceed to the next step; if not, return to the frame system hole position sketch design;

[0029] Design completion module, used to complete the frame system design.

[0030] As a preferred solution, a design change module is also included. When the frame system design is changed, the frame hole position update steps are as follows:

[0031] Copy and publish the frame system hole sketch, upgrade the version, and design and publish the upgraded hole sketch according to the design change requirements;

[0032] Extract the upgraded hole sketch and make a replacement design;

[0033] Check the hole positions of the upgraded frame system to determine whether the positions of the holes meet the frame system requirements; if yes, proceed to the next step; if no, return to the upgraded hole position sketch design;

[0034] Release the engineering data changes after verification is completed.

[0035] As a preferred solution, a derivative vehicle model design module is also included. The module is used for the design of derivative vehicles. The steps are as follows:

[0036] Determine whether there are any changes to the frame system hole positions. If there are no changes, directly copy the published frame system hole position sketch for subsequent design;

[0037] If there are any changes, copy and change the name of the published frame system hole sketch and upgrade the version; design and publish the upgraded hole sketch according to the design change requirements; extract the upgraded hole sketch and replace the design; check the upgraded frame system holes to determine whether the hole positions meet the frame system requirements; if yes, proceed to the next step; if not, return to the upgraded hole sketch design; publish the engineering data changes after the verification is completed.

[0038] Beneficial effects of the present invention:

[0039] The present invention provides a method and system for rapid collaborative design of vehicle frame holes based on CATIA, which can solve the technical problems of the existing vehicle frame hole design method, such as easy error reporting, poor modification convenience, low efficiency and poor accuracy.

[0040] In the prior art, the method of hole design by first obtaining a hole list and then converting it into a sketch stretch is time-consuming and error-prone due to the large number of hole positions in the frame system. In addition, the method involves multiple manual identification and reading sketch processes, which require repeated verification, resulting in low modeling efficiency. After using the method of the present invention, the step of obtaining a hole list can be omitted, and the hole sketch design can be directly performed by extracting the frame system design environment data. The total modeling time can be optimized by more than 60%, which can not only improve the modeling efficiency, but also save labor time costs. In addition, the method of the present invention only verifies the overall layout of the vehicle, which can avoid the problem of time-consuming and error-prone repeated verification, and can play a key optimization role in the frame hole positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 Flowchart designed for the present invention.

[0042] Figure 2 Schematic diagram for defining the vehicle coordinate system and the vehicle support plane.

[0043] Figure 3 It is a schematic diagram of measuring and outputting the hole position list in the prior art.

[0044] Figure 4 Schematic diagram of the model design of the hole positions of the reference system of the present invention.

[0045] Figure 5 It is a schematic diagram of the completion and release of the hole position sketch of the present invention.

[0046] Figure 6 It is a schematic diagram of extracting the hole position sketch of the frame of the present invention.

[0047] Figure 7 The figure is a schematic diagram of the frame design sketched according to the hole positions of the present invention. DETAILED DESCRIPTION

[0048] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0049] The present invention relates to a method and system for rapid collaborative design of frame holes based on CATIA, and the verification method is applicable to the rapid collaborative design of truck frame holes. Based on the requirements of truck scene-based, diversified, customized and rapid response, conventional design schemes can no longer meet the requirements of speed and accuracy, and improving design accuracy and efficiency has become a shortcoming in the design process. According to the principle of collaborative design method, each system designer adds a 3D data shape under the main node of the system, places the frame and reference in this shape, performs system hole sketch design, and completes the release; the frame designer performs frame hole design verification by extracting the sketch, eliminating the extraction and reading of the hole list in the process, and improving efficiency and accuracy. The carrier sketch is replaceable, but all belong to the protection scope of the present invention.

[0050] Figure 3 The diagram below is a measurement and output diagram of the hole list in the prior art. Taking the oil supply system as an example, after completing the preliminary design of the oil supply system, it is necessary to measure the installation position and diameter of the oil tank bracket and output it to the contact form. Only after the oil supply professional has approved it, the hole list can be submitted.

[0051]

[0052] In the prior art, the method of hole design is to first obtain a hole list and then convert it into a sketch and stretch. However, due to the large number of holes in the frame system, manual input and output are time-consuming, laborious, and prone to errors. In addition, this method involves multiple manual identification and reading sketch processes, which require repeated verification and low modeling efficiency.

[0053] The present invention provides a rapid collaborative design method for frame hole positions based on CATIA, which can solve the technical problems of the existing frame hole position design method, such as easy error reporting, poor modification convenience, low efficiency and poor accuracy. The method comprises the following steps:

[0054] Frame system design;

[0055] Extract the frame system design environment data, conduct frame system hole position sketch design and publish;

[0056] Confirm the frame system model to determine whether it meets the design and assembly requirements; if yes, proceed to the next step; if not, return to the system hole position sketch design;

[0057] Extract the frame system hole sketch published above, design the holes according to the sketch, and conduct collaborative design through hole transfer;

[0058] Check all the holes of the frame system to determine whether the positions of the holes meet the requirements of the frame system; if yes, proceed to the next step; if not, return to the frame system hole sketch design;

[0059] The frame system design is completed.

[0060] When the frame system design is changed, the frame hole position update steps are as follows:

[0061] Copy and publish the frame system hole sketch, upgrade the version, and design and publish the upgraded hole sketch according to the design change requirements;

[0062] Extract the upgraded hole sketch and make a replacement design;

[0063] Check the hole positions of the upgraded frame system to determine whether the positions of the holes meet the frame system requirements; if yes, proceed to the next step; if no, return to the upgraded hole position sketch design;

[0064] Release the engineering data changes after verification is completed.

[0065] The design steps of the derivative model are as follows:

[0066] Determine whether there are any changes to the frame system hole positions. If there are no changes, directly copy the published frame system hole position sketch for subsequent design;

[0067] If there are any changes, copy and change the name of the published frame system hole sketch and upgrade the version; design and publish the upgraded hole sketch according to the design change requirements; extract the upgraded hole sketch and replace the design; check the upgraded frame system holes to determine whether the hole positions meet the frame system requirements; if yes, proceed to the next step; if not, return to the upgraded hole sketch design; publish the engineering data changes after the verification is completed.

[0068] The present invention is explained below with reference to the accompanying drawings and an example of implementation.

[0069] Vehicle coordinate system: refers to a three-dimensional coordinate system that complies with ISO 4130. This coordinate system is determined by three reference planes: X0, Y0, and Z0. Figure 2The figure shows the definition of the vehicle coordinate system and the vehicle support plane, where the Y0 reference plane is the longitudinal (left-right) symmetric center plane of the vehicle. The Z0 reference plane is the plane that coincides with the upper wing surface of the frame longitudinal beam. If the upper wing surface of the longitudinal beam is not in the same plane, the plane that coincides with the longer section of the upper wing surface of the longitudinal beam is taken. The X0 reference plane is the plane that passes through the center of the front wheel and is perpendicular to the Y0 and Z0 reference planes. The origin of the vehicle coordinate system is the intersection of the three reference planes X0, Y0, and Z0. The direction of the coordinate axis conforms to the right-hand coordinate system rule: the vertical X0 pointing to the rear of the vehicle is positive, the vertical Y0 pointing to the right side of the vehicle is positive, and the vertical Z0 pointing upwards is positive, and vice versa.

[0070] like Figure 1 As shown, the present invention provides a rapid collaborative design method for frame holes based on CATIA, and the design steps are as follows:

[0071] ① The frame designer completes the frame design, and the system designer preliminarily completes the model design;

[0072] ②The system designer extracts the frame design environment and designs the hole requirements of the frame system in a sketching manner;

[0073] ③ The system designer assembles and designs the model with reference to the hole positions of the frame system; if adjustments are needed, they can be made by adjusting the hole positions; Figure 4 As shown;

[0074] ④After the model design is completed, save and publish the sketch; Figure 5 As shown;

[0075] ⑤ The frame designer extracts the sketches of each system and designs the hole positions according to the sketches; Figure 6 As shown;

[0076] ⑥ The frame designer checks the hole positions of the entire system to confirm that the hole positions meet the frame system requirements. If adjustments are required, feedback is given to the system designer for adjustment; Figure 7 As shown;

[0077] ⑦ Release after the frame designer completes the adjustment.

[0078] (2) Design change process:

[0079] ① The system designer copies the sketch and upgrades it to version B. Based on the design change requirements, he makes a sketch design for version B.

[0080] ②After the system designer completes the design, save it and publish the version B sketch;

[0081] ③ The frame designer extracts the B version sketch to replace the design and conducts verification;

[0082] ④After verification is completed, the engineering data changes are released.

[0083] (3) Derivative vehicle design process:

[0084] ① The system designer copies the sketch and if there is no change, publishes it directly and informs the frame designer;

[0085] ② If there is any change, change the sketch name and make design changes based on this. The subsequent process will refer to the design change process.

[0086] It should be understood that the specific order or hierarchy of steps in the process disclosed by the present invention is an example of an exemplary method. Based on design preferences, it should be understood that the specific order or hierarchy of steps in the process can be rearranged without departing from the scope of protection of the present disclosure. The attached method claims provide the elements of the various steps in an exemplary order and are not intended to be limited to the specific order or hierarchy described.

[0087] The present invention also provides a CATIA-based rapid collaborative design system for frame holes, comprising the following modules:

[0088] Frame design module, used for the design of the frame system itself;

[0089] Hole position sketching module, used to extract frame system design environment data, perform frame system hole position sketching design and publish;

[0090] The model confirmation module is used to confirm the frame system model and determine whether it meets the design and assembly requirements; if yes, it goes to the next step; if not, it returns to the system hole position sketch design;

[0091] The collaborative design module is used to extract the frame system hole sketch published above, design the holes according to the sketch, and conduct collaborative design through hole transfer;

[0092] The hole position checking module is used to check all the hole positions of the frame system to determine whether the positions of the holes meet the requirements of the frame system; if yes, proceed to the next step; if not, return to the frame system hole position sketch design;

[0093] Design completion module, used to complete the frame system design.

[0094] The collaborative design system also includes a design change module, which is used to update the frame hole positions when the frame system design is changed.

[0095] Copy and publish the frame system hole sketch, upgrade the version, and design and publish the upgraded hole sketch according to the design change requirements;

[0096] Extract the upgraded hole sketch and make a replacement design;

[0097] Check the hole positions of the upgraded frame system to determine whether the positions of the holes meet the frame system requirements; if yes, proceed to the next step; if no, return to the upgraded hole position sketch design;

[0098] Release the engineering data changes after verification is completed.

[0099] The collaborative design system also includes a derivative vehicle design module, which is used to design derivative vehicles. The steps are as follows:

[0100] Determine whether there are any changes to the frame system hole positions. If there are no changes, directly copy the published frame system hole position sketch for subsequent design;

[0101] If there are any changes, copy and change the name of the published frame system hole sketch and upgrade the version; design and publish the upgraded hole sketch according to the design change requirements; extract the upgraded hole sketch and replace the design; check the upgraded frame system holes to determine whether the hole positions meet the frame system requirements; if yes, proceed to the next step; if not, return to the upgraded hole sketch design; publish the engineering data changes after the verification is completed.

[0102] The advantages of the present invention are as follows:

[0103] (1) The system designer designs the hole interfaces required for the frame and assembles according to the hole positions, ensuring the consistency between the model and the installation holes;

[0104] (2) Hole position transfer through sketching enables collaborative design, eliminates the error-prone problem of repeated manual recognition, and reduces input and reading time;

[0105] (3) Derivative vehicle models can be quickly replicated through sketch preservation and reuse, and commonly used parts can be solidified to form local modules, eliminating the need for DMU and trial production verification.

[0106] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A rapid collaborative design method for frame holes based on CATIA, characterized by: The following steps are included: Frame system design; Extract the frame system design environment data, conduct frame system hole position sketch design and publish; Confirm the frame system model to determine whether it meets the design and assembly requirements; If yes, go to the next step; if no, return to the system hole position sketch design; Extract the frame system hole sketch published above, design the holes according to the sketch, and conduct collaborative design through hole transfer; Check all the holes of the frame system to determine whether the positions of the holes meet the requirements of the frame system; if yes, proceed to the next step; if not, return to the frame system hole sketch design; The frame system design is completed.

2. The method for rapid collaborative design of vehicle frame holes based on CATIA according to claim 1, characterized in that: When the frame system design changes, the frame hole position update steps are as follows: Copy and publish the frame system hole sketch, upgrade the version, and design and publish the upgraded hole sketch according to the design change requirements; Extract the upgraded hole position sketch and make a replacement design; Check the hole positions of the upgraded frame system to determine whether the positions of the holes meet the frame system requirements; If yes, go to the next step; if no, return to the upgraded hole position sketch design; Release the engineering data changes after verification is completed.

3. The method for rapid collaborative design of vehicle frame holes based on CATIA according to claim 1, characterized in that: The design steps of the derivative model are as follows: Determine whether there are any changes to the frame system hole positions. If there are no changes, directly copy the published frame system hole position sketch for subsequent design; If there are any changes, copy and change the published frame system hole sketch name and upgrade the version; According to the design change requirements, an upgraded version of the hole position sketch design is carried out and released; the upgraded version of the hole position sketch is extracted and a replacement design is carried out; the upgraded version of the frame system hole position is checked to determine whether the position of the hole position meets the frame system requirements; if yes, proceed to the next step; if not, return to the upgraded version of the hole position sketch design; Release the engineering data changes after verification is completed.

4. A CATIA-based rapid collaborative design system for vehicle frame holes, characterized by: Includes the following modules, Frame design module, used for the design of the frame system itself; Hole position sketching module, used to extract frame system design environment data, perform frame system hole position sketching design and publish; Model confirmation module, used to confirm the frame system model and determine whether it meets the design and assembly requirements; If yes, go to the next step; if no, return to the system hole position sketch design; The collaborative design module is used to extract the frame system hole sketch published above, design the holes according to the sketch, and conduct collaborative design through hole transfer; The hole position checking module is used to check all the hole positions of the frame system to determine whether the positions of the holes meet the requirements of the frame system; if yes, proceed to the next step; if not, return to the frame system hole position sketch design; Design completion module, used to complete the frame system design.

5. The CATIA-based rapid collaborative design system for vehicle frame holes according to claim 4, characterized in that: It also includes a design change module, which is used when the frame system design is changed. The frame hole position update steps are as follows: Copy and publish the frame system hole sketch, upgrade the version, and design and publish the upgraded hole sketch according to the design change requirements; Extract the upgraded hole position sketch and make a replacement design; Check the hole positions of the upgraded frame system to determine whether the positions of the holes meet the frame system requirements; If yes, go to the next step; if no, return to the upgraded hole position sketch design; Release the engineering data changes after verification is completed.

6. The CATIA-based rapid collaborative design system for vehicle frame holes according to claim 4, characterized in that: It also includes a derivative vehicle design module, which is used to design derivative vehicles. The steps are as follows: Determine whether there are any changes to the frame system hole positions. If there are no changes, directly copy the published frame system hole position sketch for subsequent design; If there are any changes, copy and change the published frame system hole sketch name and upgrade the version; According to the design change requirements, an upgraded version of the hole position sketch design is carried out and released; the upgraded version of the hole position sketch is extracted and a replacement design is carried out; the upgraded version of the frame system hole position is checked to determine whether the position of the hole position meets the frame system requirements; if yes, proceed to the next step; if not, return to the upgraded version of the hole position sketch design; Release the engineering data changes after verification is completed.

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