CATIA parameterization design method and device for straight strip type ventilation rib brake disc

Abstract

The invention relates to a CATIA parameterization design method and device for a straight strip type ventilation rib brake disc. The method comprises the following steps: S1, designing a CATIA structure; s2, determining a variable size; s3, setting a parameter formula; s4, endowing parameters to the variable size; s5, parameterization is achieved, wherein subsequent data change only needs to change the size in a parameter column of the feature tree, and the model is output again after updating; the method for improving the design efficiency is provided for the structural design of the straight-strip-type ventilation rib brake disc of the passenger car based on CATIA V5 software, the efficiency of designers can be improved, and the early-stage design period can be shortened. And if a designer needs to replace a project, the designer can visually understand the CATIA design steps of the designer in the CATIA parameter bar and carry out subsequent design change, so that the requirement on the ability of the designer is reduced, and the project time and the labor cost are indirectly saved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile computer-aided design, and relates to a CATIA parametric design method and device for a straight-strip ventilation rib brake disc. Background Art

[0002] As a key component in the automobile braking system, the design process and development cycle of passenger car brake discs have become a matter of particular concern to OEMs and parts manufacturers. Passenger car ventilated brake discs are widely used in automobiles due to their good braking performance and excellent heat dissipation capabilities. Among them, straight strip ventilation ribs are simpler in structure than other types of ventilation ribs, and pose less challenges to designers and technicians. They are the most widely used in ventilated brake discs.

[0003] The development process of brake discs mainly includes structural design, simulation verification and process production. It is difficult for designers to ensure that the designed brake discs pass CAE simulation analysis verification in one go during the early design stage, so a large number of repetitive structural changes will be made in CATIA, which will reduce the efficiency of early design and extend the development cycle. However, it is difficult to compress time and improve efficiency in the later process stage of brake disc development.

[0004] From the above analysis, it can be seen that compressing the design cycle of the brake disc is of great significance to reducing the entire brake disc development cycle. Therefore, the present invention aims to minimize the design time by parametrically modeling the brake disc using the parametric module in CATIA V5, so as to shorten the project cycle and make the product more competitive. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a CATIA parametric modeling design method for a straight-rib ventilated rib brake disc, a straight-rib ventilated rib brake disc, a vehicle, a device and a medium. At the same time, the method has universality and can be applied to the design of straight-rib ventilated brake discs of any vehicle model.

[0006] It should be noted that, in this article, relational terms such as first and second, etc. 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.

[0007] In order to solve the above technical problems, the present invention is implemented by adopting the following technical solutions:

[0008] A CATIA parametric design method for a straight ventilated rib brake disc includes the following steps:

[0009] S1: CATIA structural design: Open CATIA software to enter the parts design and design the brake disc with the required size and thickness;

[0010] S2: Determine variable size: modify data according to requirements, confirm the changeable size, and find the sketch command where the changeable size is located;

[0011] S3: Set parameter formula: Click the formula command in the above catpart file to set new type parameters;

[0012] S4: assigning parameters to variable sizes: setting the defined parameters in the sketch for the variable sizes determined in S2 above;

[0013] S5: Implement parameterization: To change the data later, just change the size in the parameter column of the feature tree, and then re-output the model after updating.

[0014] Furthermore, the variable sizes in S2 are the thickness and outer diameter of the brake disc and the inner and outer radii of the ventilation ribs.

[0015] Furthermore, the number of new type parameters in S3 is set according to the number of sizes that need to be changed.

[0016] Furthermore, the straight ventilation rib brake disc adopts divergent straight ribs.

[0017] Furthermore, the radius of the ribs on the side close to the center of the disk is smaller, and the radius of the ribs close to the periphery of the disk is larger. The straight ventilation ribs diverge from the inside to the outside. Since the subsequent CAE modal calculation involves changing the size of the ventilation ribs, the arc radii on both sides of the ventilation ribs are parametrically designed.

[0018] Furthermore, CATIA software is opened in S1 to enter the part design, and a brake disc of the required size and thickness is designed and saved in catpart format.

[0019] A straight-strip ventilation rib brake disc is manufactured using the straight-strip ventilation rib brake disc CATIA parametric design method as described above.

[0020] A vehicle includes a straight-strip ventilation rib brake disc, wherein the straight-strip ventilation rib brake disc adopts the straight-strip ventilation rib brake disc CATIA parametric design method as described above.

[0021] An apparatus comprising one or more processors;

[0022] A memory for storing one or more programs;

[0023] When the one or more programs are executed by the one or more processors, the one or more processors implement the CATIA parametric design method for the straight-strip ventilation rib brake disc as described above.

[0024] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the CATIA parametric design method for a straight-strip ventilation rib brake disc as described above.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention proposes a method for improving design efficiency for the design of a passenger car straight ventilated rib brake disc structure based on CATIA V5 software, which can improve the efficiency of designers and shorten the early design cycle. Moreover, if the project requires the replacement of designers, the CATIA design steps of the previous designer can be intuitively understood in the CATIA parameter column, and subsequent design changes can be made, thereby reducing the ability requirements for designers and indirectly saving project time and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below in conjunction with the accompanying drawings:

[0028] Figure 1 This is a flow chart of the CATIA parametric design method for the straight-strip ventilation rib brake disc for a passenger car according to the present invention;

[0029] Figure 2 This is a comparison chart between non-parametric design and parametric design processes;

[0030] Figure 3 This is the CATIA parametric schematic diagram of the straight rib ventilated brake disc for passenger cars;

[0031] Figure 4 It is a schematic diagram of CATIA parameter feature tree;

[0032] Figure 5 This is a schematic diagram of the design dimensions of the straight ventilation ribs;

[0033] Figure 6 It is a schematic diagram of the changeable dimensions;

[0034] Figure 7 This is the sketch where the changeable dimensions are located;

[0035] Figure 8 To set the parameter formula, add the eg_R diagram to the parameter in the structure tree on the left;

[0036] Fig. 9 Right-click to edit the formula diagram for the dimensions that need to be parameterized;

[0037] Fig.10 Assign formula diagrams to the size parameters that need to be parameterized;

[0038] Fig.11 This is a diagram for changing the R20 dimension in the parameter tree on the left;

[0039] Fig.12 To assign parameters to the R20 size: eg schematic diagram;

[0040] Fig.13 The updated size data is reflected in the 3D digital model schematic diagram;

[0041] Fig.14 Create a new parameter diagram;

[0042] Fig.15 This is a schematic diagram for the parametric design of the circumferential radius dimensions on both sides of the ventilation ribs. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the implementation of the present invention clearer, the technical scheme in the embodiment of the present invention will be described in more detail below in conjunction with the drawings in the embodiment of the present invention. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The embodiments of the present invention are described in detail below in conjunction with the drawings.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0045] The present invention is described in detail below in conjunction with the accompanying drawings:

[0046] Compared with using CATIA software to draw brake discs according to traditional modeling ideas, using CATIA parametric modeling for subsequent data changes and corresponding CAE personnel analysis greatly saves time and improves efficiency. The present invention provides an embodiment, a CATIA parametric design method for straight strip ventilation rib brake discs, refer to Figure 1 , Figure 2 , the overall process of the method is as follows:

[0047] S1: CATIA structural design: Open CATIA software to enter the part design, design the brake disc with the required size and thickness, and save it in catpart format;

[0048] S2: Determine variable dimensions: If data changes are required according to the requirements, confirm the changeable dimensions, such as the thickness and outer diameter of the brake disc, and find the sketch command where they are located; "they" represents the changeable dimensions, for example Figure 6 The size of f(x) is shown after the middle part. Figure 7 This is the sketch where the changeable dimensions are located;

[0049] S3: Set parameter formula: Click the formula command in the above catpart file to set new type parameters. If there are several dimensions that need to be changed, set several new parameters; new type parameters refer to the creation of a new parameter such as Fig.14 .

[0050] See also Figure 8 , first create a formula, click on the new type parameter to set the required parameters (length, angle, etc.), add the formula and confirm, and add eg_R to the parameter in the left structure tree;

[0051] See also Fig. 9 , Fig.10 Then right-click on the dimension that needs to be changed, that is, the dimension that needs to be parameterized (R20 in the figure) to edit the formula, assign the previously set parameters to this dimension, and complete the parametric design.

[0052] See also Fig.11 , you can change the R20 dimension later directly in the parameter tree on the left, avoiding the trouble of finding the location of the dimension sketch in many commands, greatly reducing the design change time.

[0053] S4: assigning parameters to variable sizes: setting defined parameters in the sketch for the variable sizes determined above;

[0054] See also Fig.12 , assign parameter:eg to the variable size, the variable size is R20, parameter:eg refers to the left tree Fig.12 The parameter formula in the figure gives parameters to the R20 size: eg, to achieve parametric design.

[0055] S5: Implement parameterization: To change the data later, you only need to change the size in the parameter column of the feature tree, and then re-output the model after updating to improve design efficiency.

[0056] See also Fig.13, Subsequent data changes mean that if the product needs to be changed in design, the 3D data needs to be changed. The model is a 3D data model, which is the data after the size is updated. It is reflected in the 3D digital model because the size in the parameter tree is changed, which causes the 3D data model to change. To achieve parametric modeling, change the parameters in the parameter tree to directly control the corresponding size changes.

[0057] Compared with the conventional method of changing design data, it is obvious that parametric modeling is more convenient and can significantly improve the efficiency of design and CAE verification.

[0058] See also Figure 3 , Figure 3 The straight rib ventilated brake disc for passenger cars is parameterized by CATIA, in which the changeable sketch dimensions are parametrically designed. For example, the swan neck arc dimension, brake disc thickness distribution dimension, brake disc cap wall thickness and other changeable dimensions can all be included in the parametric design scope.

[0059] By modifying Figure 4 In the CATIA parameter feature tree, you can directly change the model, and the relationship between the parameters and the actual size is reflected in the relationship. "Model change" refers to the change of 3D data. The actual size refers to the changeable size.

[0060] See also Figure 5 , Figure 5 For the design dimensions of the straight ventilation ribs, based on project experience, the radius of the ribs on the side close to the center of the disk is smaller, and the radius of the ribs close to the circumference of the disk is larger. Therefore, the straight ventilation ribs designed in the present invention are divergent from the inside to the outside. Since the subsequent CAE modal calculations may frequently involve changing the dimensions of the ventilation ribs, the arc radii on both sides of the ventilation ribs are parametrically designed to facilitate subsequent design changes.

[0061] See also Fig.15 The present invention provides another embodiment, a straight ventilated rib brake disc, the passenger car brake disc product involved needs to be verified by CAE simulation after the structural design is completed, and CAE modal calculation is a necessary condition for verifying the reasonableness of the brake disc structural design. The brake disc designed by the present invention is a divergent straight rib, which is the design point of the invention. The parameterized partial dimensions are parameterized wherever there may be design changes in order to facilitate subsequent structural changes, including but not limited to the swan neck arc dimensions, brake disc thickness distribution dimensions, and brake disc cap wall thickness.

[0062] The design method of the straight-bar ventilation rib brake disc for a passenger car of the present invention adopts divergent straight ribs; CATIA parametric design is adopted for the straight-bar ventilation rib brake disc for a passenger car, and formula parameter connection is established in the sketch, which greatly improves the efficiency of subsequent data changes and saves the time of designers.

[0063] The present invention provides another embodiment, a vehicle, including a straight-strip ventilation rib brake disc, which is manufactured using the straight-strip ventilation rib brake disc CATIA parametric design method described above.

[0064] Based on the above CATIA parametric design method for the straight strip type ventilated rib brake disc, the present invention provides another device, which includes but is not limited to: one or more processors and memories.

[0065] The memory, as a computer-readable storage medium, can be used to store software programs, computer executable programs and modules, such as program instructions corresponding to the CATIA parametric design method for the straight-strip ventilated rib brake disc in the embodiment of the present invention. The processor executes various functional applications and data processing of the vehicle by running the software programs, instructions and modules stored in the memory, that is, realizing the above-mentioned CATIA parametric design method for the straight-strip ventilated rib brake disc.

[0066] The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system and at least one application required for a function; the data storage area may store data created according to the use of the terminal, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0067] The present invention also provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, a CATIA parametric design method for a straight-strip ventilating rib brake disc is implemented. The CATIA parametric design method for a straight-strip ventilating rib brake disc comprises the following steps:

[0068] S1: CATIA structural design: Open CATIA software to enter the part design, design the brake disc with the required size and thickness, and save it in catpart format;

[0069] S2: Determine variable dimensions: If data changes are required according to the requirements, confirm the changeable dimensions, such as the thickness and outer diameter of the brake disc, and find the sketch command where they are located; "they" represents the changeable dimensions, for example Figure 6 The middle part has the dimension f(x) after it. The sketch in which it is located is the sketch in which the dimension can be changed. Figure 7 shown.

[0070] S3: Set parameter formula: Click the formula command in the above catpart file to set new type parameters. If there are several dimensions that need to be changed, set several new parameters;

[0071] S4: assigning parameters to variable sizes: setting defined parameters in the sketch for the variable sizes determined above;

[0072] S5: Implement parameterization: To change the data later, you only need to change the size in the parameter column of the feature tree, and then re-output the model after updating to improve design efficiency.

[0073] The computer-readable storage medium provided by the present invention has computer executable instructions which are not limited to the method operations described above, but can also execute related operations in the CATIA parametric design method for straight ventilating rib brake discs provided by any embodiment of the present invention.

[0074] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0075] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loading and executing computer program instructions on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be transmitted from a website site, a computer, a server or a data center to another website site, a computer, a server or a data center by wired (for example, coaxial cable, optical fiber, digital subscriber line DSL) or wireless (for example, infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, a data center, etc. that contains one or more available media integrated. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid-state hard disk Solid State Disk, SSD), etc.

[0076] In the above embodiments, the various units and modules included are only divided according to functional logic, but are not limited to the above divisions, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0077] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any modification, equivalent replacement and improvement made by any person skilled in the art within the technical scope disclosed by the present invention and within the spirit and principle of the present invention shall be covered within the protection scope of the present invention. At the same time, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A CATIA parametric design method for a straight ventilated rib brake disc, characterized in that: The following steps are involved: S1: CATIA structural design: Open CATIA software to enter the parts design and design the brake disc with the required size and thickness; S2: Determine variable size: modify data according to requirements, confirm the changeable size, and find the sketch command where the changeable size is located; S3: Set parameter formula: Click the formula command in the above catpart file to set new type parameters; S4: assigning parameters to variable sizes: setting the defined parameters in the sketch for the variable sizes determined in S2 above; S5: Implement parameterization: To change the data later, just change the size in the parameter column of the feature tree, and then re-output the model after updating.

2. The CATIA parametric design method for a straight ventilated rib brake disc according to claim 1, characterized in that: The variable dimensions in S2 are the thickness and outer diameter of the brake disc and the inner and outer radii of the ventilation ribs.

3. The CATIA parametric design method for a straight ventilated rib brake disc according to claim 1, characterized in that: The number of new type parameters in S3 is set according to the number of sizes that need to be changed.

4. The CATIA parametric design method for a straight ventilated rib brake disc according to claim 1, characterized in that: The straight ventilation rib brake disc adopts divergent straight ribs.

5. The CATIA parametric design method for a straight ventilated rib brake disc according to claim 4, characterized in that: The radius of the ribs on the side close to the center of the disk is smaller, and the radius of the ribs close to the periphery of the disk is larger. The straight ventilation ribs diverge from the inside to the outside. Since the subsequent CAE modal calculation involves changing the size of the ventilation ribs, the arc radii on both sides of the ventilation ribs are parametrically designed.

6. The CATIA parametric design method for a straight ventilated rib brake disc according to claim 1, characterized in that: Open CATIA software in S1 to enter part design, design a brake disc with the required size and thickness, and save it in catpart format.

7. A straight ventilated rib brake disc, characterized in that: The straight ventilating rib brake disc is manufactured by using the CATIA parametric design method described in any one of claims 1 to 6.

8. A vehicle, comprising a straight ventilated rib brake disc, characterized in that: The straight-strip ventilation rib brake disc adopts the straight-strip ventilation rib brake disc CATIA parametric design method described in any one of claims 1 to 6.

9. A device, characterized in that: comprising one or more processors; A memory for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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