Wire harness design system based on CAD platform

Abstract

The invention relates to the field of automobile wire harness manufacturing, and discloses a wire harness design system based on a CAD platform, which comprises a wire harness basic database management module, a wire harness schematic diagram design module, a wire harness 3D interface module, a wire harness 2D drawing drawing CAD module, a wire harness drawing process decomposition CAPP module and a conduction test data generation module. The wire harness design system based on the CAD platform is developed based on the CAD platform, is suitable for being used by an automobile complete machine factory and a wire harness factory, and can realize system integration from wire harness development to process decomposition and integrated data generation.

Description

Technical Field

[0001] The present invention relates to the field of automotive wiring harness manufacturing, and particularly to a wiring harness design system based on a CAD platform. Background Art

[0002] An automotive wiring harness is an important part of an automotive circuit, and the wiring harness bears the transmission function of electric power and various control signals between components inside the vehicle.

[0003] The CAD-based wiring harness design system provides an information-based solution for the whole vehicle factory and the wiring harness factory for the entire process of automotive wiring harness from design and development to process decomposition. By establishing a wiring harness basic database, standardizing the wiring harness design and process decomposition operation processes, integrating functions such as AI intelligent assistance and matching processes based on big data, the work difficulty and threshold of wiring harness drawing development and process decomposition are reduced, errors in wiring harness design and process output are avoided, and at the same time, the work efficiency of wiring harness design and process decomposition is significantly improved. Summary of the Invention

[0004] To solve the above problems, the present application proposes a wiring harness design system based on a CAD platform, which realizes the integrated management and system integration of automotive wiring harness schematic design, CATIA 3D data interface, wiring harness 2D assembly drawing generation, and wiring harness process decomposition.

[0005] This wiring harness design system based on a CAD platform includes a wiring harness basic database management module, a wiring harness schematic design module, a wiring harness 3D interface module, a wiring harness 2D drawing CAD module, a wiring harness drawing process decomposition CAPP module, and a conduction inspection table data generation module; The wiring harness basic database management module is used to manage the design and process technical standards, specifications, and working parameters required by the wiring harness CAD and CAPP software; The wiring harness schematic design module is used to realize functions such as device and its PIN foot function definition, symbol library definition, principle wiring diagram design, and schematic diagram error review; The wiring harness 3D interface module is used to realize the data interface with CATIA and UG software, read their 3D wiring data, and quickly generate a 2D topology diagram; The wiring harness 2D drawing CAD module is used to quickly draw 2D wiring harness assembly drawings in a standardized and parametric manner, and at the same time support automatically generating 2D wiring harness drawings according to the schematic design information + 2D topology diagram; The wiring harness drawing process decomposition CAPP module is used to realize the rapid process decomposition of 2D wiring harness drawings and output process guidance documents required for each process in the wiring harness manufacturing workshop; The conduction test data generation module is used to achieve intelligent matching of each connector in the 2D wire harness drawing to the corresponding module on the conduction table, generate conduction detection standard data, and can replace the traditional process of giving the conduction machine to learn after manual test sample wires.

[0006] The wire harness basic database management module includes: The background sheath library management unit: The background sheath library management is used for the convenient management of the basic information of the wire harness design sheath, standard graphics, pictures and adapted process parameters; The background auxiliary material library management unit: The background auxiliary material library management unit mainly realizes the daily management of common auxiliary materials (such as: cable ties, buckles, rubber parts), that is, the auxiliary materials of the wire harness and the sub-materials attached to the auxiliary materials; The background coating material management unit: The background coating material management unit is used for the management of common coating materials for wire harnesses, various coating methods and tape usage algorithms; User management: Realize the daily management of adding, deleting, modifying, querying, permission allocation, etc. of background users, and query user operation logs.

[0007] The wire harness schematic diagram design module includes a foreground schematic diagram drawing unit, and the foreground schematic diagram drawing unit is used for the rapid drawing of standardized wire harness schematic diagrams, supporting three schematic diagram drawing modes.

[0008] The schematic diagram drawing modes specifically include: Rapidly draw a schematic diagram based on ICD: First, import the edited ICD table into the wire harness design system, and then the software can quickly draw the corresponding schematic diagram according to the ICD table; Rapidly draw a schematic diagram based on device definition: First, define various devices required for the project, and select the corresponding device to quickly draw its corresponding schematic diagram; Directly draw a schematic diagram from the connector database: At the same time, the software supports directly selecting the required connectors from the connector database and quickly drawing their schematic diagrams.

[0009] The wire harness 3D interface module is a CATIA three-dimensional data interface. The wire harness design system based on the CAD platform supports the CATIA three-dimensional data interface module to read the wire harness 3D digital model information designed by CATIA and quickly generate a 2D wire harness topology diagram.

[0010] The wire harness 2D assembly drawing drawing module supports two 2D wire harness drawing modes: Mode 1: Automatically generate a wire harness 2D assembly drawing through the CATIA three-dimensional data interface and the wire harness schematic diagram, and draw a 2D wire harness drawing through the 2D assembly drawing module; Mode 2: Design a 2D wire harness drawing through the wire harness CAD module, and the system can also directly draw a 2D wire harness drawing through the wire harness CAD module.

[0011] The CAPP module for the process decomposition of the wiring harness drawing is used for the process decomposition of the 2D assembly drawing of the customer's wiring harness and outputs a complete and correct process guidance document.

[0012] The operation process of the CAPP module for the process decomposition of the wiring harness drawing is as follows: S1. The function of quickly converting customer drawings realizes the conversion of customer drawings into software drawings that can be recognized by the CAPP software. S2. The function of one-key matching of process parameters realizes the automatic matching of process parameters required by the drawing through the big data maintained later. S3. The function of intelligent recommendation of the optimal solder joints. The software can automatically analyze the optimal solder joint positions of each loop and quickly complete the design of each solder joint through human-computer interaction. S4. The function of accurately calculating the wire length. The software accurately calculates the cutting length of each wire. S5. The function of one-key drawing of the crimping diagram. The software can intelligently analyze the wire numbers at the left and right ends of the solder joints of each loop and automatically draw the welding schematic diagram. S6. The function of automatically generating various process data. The software can automatically generate various process data such as the wire cutting list, material BOM, pipe table, and sheath BOM table. S7. The function of quickly drawing the covering material. The software can intelligently analyze the diameter and length of the covering pipe for each branch section, and draw the covering pipe onto the drawing with one key. At the same time, the software supports drawing the branch encapsulation process onto the drawing with one key. S8. The function of one-key generating the pre-assembly drawing. The software has the functions of intelligent analysis of the pre-assembly drawing and one-key drawing of the pre-assembly drawing. S9. The function of quickly designing the tooling board. Through the tooling board design module provided by the software, a 1:1 tooling board drawing can be quickly generated.

[0013] The conduction test bench data generation module includes: The drawing and management unit of the conduction test bench surface: includes basic functions such as adding, deleting, modifying, and querying the basic information of the conduction test bench surface, designing the layout diagram of the conduction test bench module, and maintaining the position coordinates and address codes of each pin of the conduction module, etc. The intelligent recommendation unit of the optimal conduction test bench: extracts the drawing of the optimal test bench surface to be analyzed and can analyze the most suitable test bench surface for the current drawing. The matching unit of the wiring harness drawing and the conduction test bench module: The wiring harness design system on the CAD platform provides various rules based on the position number or sheath number to quickly match the sheaths of the drawing and the modules of the test bench. The conduction test data generation and export unit of the wiring harness: After all the sheaths of the wiring harness drawing are matched to the corresponding modules of the test bench, the wiring harness design system on the CAD platform can generate the conduction test data of the corresponding modified test bench for this drawing.

[0014] In summary, the wire harness design system based on the CAD platform provided by the present invention, compared with the traditional technology, is developed based on the CAD platform, suitable for use by automotive OEMs and wire harness factories, can achieve system integration from wire harness development to process decomposition and generate integrated data, can realize the rapid design of automotive electrical schematic diagrams, generate 2D topological diagrams through the wire harness 3D layout diagrams, and automatically generate 2D wire harness assembly diagrams. At the same time, it has a CAPP for process decomposition of wire harness drawings, can quickly output process documents such as wire cutting tables, material BOMs, sub-assembly diagrams, and tooling diagrams, and has an electrical test bench module, which can quickly output the electrical test data corresponding to the wire harness drawings.

[0015] Next, through the drawings and embodiments, the technical method of the present invention will be further described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the modules of a wire harness design system based on the CAD platform; Figure 2 It is a flowchart of the operation of the CAPP module for process decomposition of wire harness drawings in a wire harness design system based on the CAD platform; Figure 3 It is a schematic diagram of drawing a 2D wire harness drawing in Mode 1 of a wire harness design system based on the CAD platform; Figure 4 It is a schematic diagram of drawing a 2D wire harness drawing in Mode 1 of a wire harness design system based on the CAD platform. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following further illustrates the technical method of the present invention through the drawings and embodiments. It should be noted that: unless otherwise specifically stated, the relative arrangements, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of the present application.

[0018] The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present application, its application, or its use.

[0019] Techniques, systems, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, systems, and devices should be regarded as part of the specification.

[0020] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0021] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meaning as understood by those of ordinary skill in the field to which the present invention belongs.

[0022] The present invention provides a wiring harness design system based on a CAD platform, including: a wiring harness basic database management module, a wiring harness schematic diagram design module, a wiring harness 3D interface module, a CAD module for drawing 2D wiring harness drawings, a CAPP module for decomposing the process of wiring harness drawings, and a conduction inspection table data generation module; The wiring harness basic database management module is used to manage the design and process technical standards, specifications, and working parameters required by the wiring harness CAD and CAPP software; The wiring harness schematic diagram design module is used to implement functions such as device and PIN foot function definition, symbol library definition, principle wiring diagram design, and schematic diagram error review; The wiring harness 3D interface module is used to implement data interfaces with CATIA and UG software, read their 3D wiring data, and quickly generate 2D topology diagrams; The CAD module for drawing 2D wiring harness drawings is used to quickly draw 2D wiring harness assembly drawings in a standardized and parametric manner, and at the same time support automatically generating 2D wiring harness drawings based on schematic diagram design information + 2D topology diagrams; The CAPP module for decomposing the process of wiring harness drawings is used to quickly decompose the process of 2D wiring harness drawings and output process guidance documents required for each process in the wiring harness manufacturing workshop; The conduction test data generation module is used to intelligently match each connector of the 2D wiring harness drawing to the corresponding module on the conduction table, generate conduction detection standard data, and can replace the traditional process of manually testing the sample wire and then letting the conduction machine learn.

[0023] Background sheath library management unit: The background sheath library management is used for convenient management of the basic information, standard graphics, pictures, and adapted process parameters of the wiring harness design sheath; This unit can implement basic operations such as adding, deleting, modifying, and querying of sheaths. At the same time, it can define and enter the standard 2D graphics of the inlet end and outlet end of the sheath into the database, support uploading sheath-related pictures and attached files, etc., and realize convenient management of the terminals adapted to the sheath, realize convenient management of the waterproof plugs adapted to the sheath, realize convenient management of the blind plugs adapted to the sheath, and realize convenient management of the accessories adapted to the sheath; Background auxiliary material library management unit: The background auxiliary material library management unit mainly realizes the daily management of commonly used auxiliary materials (such as: cable ties, buckles, rubber parts), namely the auxiliary materials of the wiring harness and the sub-materials attached to the auxiliary materials; Background covering material management unit: The background covering material management unit is used for the management of commonly used covering materials for wiring harnesses, usually including: management of various tapes and bellows, management of covering tape materials, management of various covering methods and tape usage algorithms; User management: Realize daily management such as adding, deleting, modifying, and querying of background users, permission allocation, and query of user operation logs.

[0024] The wire harness schematic design module includes a front - end schematic drawing unit, which is used for the rapid drawing of standardized wire harness schematics and supports three schematic drawing modes.

[0025] The schematic drawing modes specifically include: Rapidly draw a schematic based on ICD: First, import the edited ICD table into the wire harness design system, and then the software can quickly draw the corresponding schematic according to the ICD table. Rapidly draw a schematic based on device definition: First, define all kinds of devices required for the project, and select the corresponding devices to quickly draw their corresponding schematics. Directly draw a schematic from the connector database: At the same time, the software supports directly selecting the required connectors from the connector database and quickly drawing their schematics.

[0026] The wire harness 3D interface module is a CATIA three - dimensional data interface. The wire harness design system based on the CAD platform supports the CATIA three - dimensional data interface module to read the wire harness 3D digital model information designed by CATIA and quickly generate a 2D wire harness topology diagram.

[0027] The wire harness 2D assembly drawing module supports two 2D wire harness drawing modes: Mode 1: Automatically generate a wire harness 2D assembly drawing through the CATIA three - dimensional data interface and the wire harness schematic, and draw the 2D wire harness drawing through the 2D assembly drawing module. Generate a 2D wire harness drawing through the 3D interface and the schematic. The wire harness design system can read the wire harness 3D layout information through the CATIA 3D interface and quickly generate a 2D topology diagram. Combining with the schematic design information drawn by the wire harness system schematic module, a 2D wire harness drawing can be quickly generated. Mode 2: Design a 2D wire harness drawing through the wire harness CAD module. The system can also directly draw a 2D wire harness drawing through the wire harness CAD module.

[0028] The CAPP module for process decomposition of wire harness drawings is used for the process decomposition of the customer's wire harness 2D assembly drawings and outputs a set of complete and correct process guidance documents.

[0029] The operation process of the CAPP module for process decomposition of wire harness drawings is as follows: S1. The function of rapid conversion of customer drawings realizes the conversion of customer drawings into software drawings that can be recognized by the CAPP software. S2. The function of one - key matching of process parameters realizes the automatic matching of the process parameters required by the drawings through the post - maintained big data. S3. The function of intelligent recommendation of the optimal solder joints. The software can automatically analyze the optimal solder joint positions of each loop and quickly complete the design of each solder joint through human - computer interaction. S4. Function of accurately calculating wire length: The software accurately calculates the cutting length of each wire. S5. Function of automatically drawing soldering diagrams: The software can intelligently analyze the wire numbers of the left and right ends of the solder joints of each loop and automatically draw soldering diagrams. S6. Function of automatically generating various process data: The software can automatically generate various process data such as wire cutting tables, material BOMs, pipe tables, and sheath BOM tables. S7. Function of quickly drawing cladding materials: The software can intelligently analyze the diameter and length of the cladding pipes for each branch section, and draw the cladding pipes onto the drawing with one click. At the same time, the software supports drawing the branch encapsulation process onto the drawing with one click. S8. Function of automatically generating pre-assembly drawings: The software has the functions of intelligent analysis of pre-assembly drawings and automatically drawing pre-assembly drawings with one click. S9. Function of quickly designing tooling boards: Through the tooling board design module provided by the software, a 1:1 tooling board drawing can be quickly generated.

[0030] The data generation module of the conduction test bench includes: Conduction test bench surface drawing and management unit: It includes basic functions such as adding, deleting, modifying, and querying the basic information of the conduction test bench surface, designing the layout drawing of the conduction test bench surface module, and maintaining the position coordinates and address codes of each pin of the conduction module. Optimal conduction test bench intelligent recommendation unit: Extract the drawings of the optimal test bench surface to be analyzed, and the most suitable test bench surface for the current drawing can be analyzed. Harness drawing and conduction test bench module matching unit: The harness design system on the CAD platform provides various rules based on position numbers or sheath numbers to quickly match the drawing sheaths and test bench modules. Harness conduction test data generation and export unit: After all the sheaths of the harness drawings are matched to the corresponding modules of the test bench, the harness design system on the CAD platform can generate the conduction test data of the corresponding modified test bench for the drawing.

[0031] Those skilled in the art can easily understand that the above is only a preferred embodiment of the present invention and is not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical method of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical method of the present invention, and these modifications or equivalent replacements cannot make the modified technical method deviate from the spirit and scope of the technical method of the present invention.

Claims

1. A wire harness design system based on a CAD platform, characterized in that Including: Wire harness basic database management module, wire harness schematic design module, wire harness 3D interface module, wire harness 2D drawing CAD module, wire harness drawing process decomposition CAPP module, conduction test data generation module; The wire harness basic database management module is used to manage the design, process technical standards, specifications and working parameters required by wire harness CAD and CAPP software; The wire harness schematic design module is used to realize functions such as device and PIN foot function definition, symbol library definition, principle wiring diagram design and schematic diagram error review; The wire harness 3D interface module is used to realize the data interface with CATIA and UG software, read their 3D wiring data, and quickly generate a 2D topology diagram; The wire harness 2D drawing CAD module is used to quickly and standardly, parametrically draw 2D wire harness assembly drawings, and at the same time support automatically generating 2D wire harness drawings according to schematic design information + 2D topology diagrams; The wire harness drawing process decomposition CAPP module is used to realize the rapid process decomposition of 2D wire harness drawings and output process guidance documents required for each process in the wire harness manufacturing workshop; The conduction test data generation module is used to intelligently match each connector of the 2D wire harness drawing to the corresponding module of the conduction table, generate conduction detection standard data, and can replace the traditional process of manually testing the sample wire and then letting the conduction machine learn.

2. A harness design system based on a CAD platform according to claim 1, characterized in that, The wire harness basic database management module includes: Background sheath library management unit: The background sheath library management is used for the convenient management of the basic information, standard graphics, pictures and adapted process parameters of the sheaths required for wire harness design; Background auxiliary material library management unit: The background auxiliary material library management unit mainly realizes the daily management of the information, graphics, pictures and sub-materials attached to the pictures of common auxiliary materials; Background covering material management unit: The background covering material management unit is used for the management of common covering materials for wire harnesses, various covering methods and tape usage algorithms; User management: Realize the daily management such as addition, deletion, modification, query of background user basic information, permission allocation, and query of user operation logs.

3. A wire harness design system based on a CAD platform according to claim 1, characterized in that, The wire harness schematic design module includes a foreground schematic drawing unit, and the foreground schematic drawing unit is used for the rapid drawing of standardized wire harness schematic diagrams, supporting three schematic drawing modes.

4. A harness design system based on a CAD platform according to claim 3, characterized in that The schematic drawing modes specifically include: Rapidly draw a schematic diagram based on ICD: First import the edited ICD table into the wire harness design system, and then the software can quickly draw the corresponding schematic diagram according to the ICD table; Rapidly draw a schematic diagram based on device definition: First define various devices required for the project, and select the corresponding devices to quickly draw the corresponding schematic diagram; Directly draw a schematic diagram from the connector database: At the same time, the software supports directly selecting the required connectors from the connector database and quickly drawing the schematic diagram.

5. A harness design system based on a CAD platform according to claim 1, characterized in that, The wire harness 3D interface module is a CATIA three-dimensional data interface. The wire harness design system based on the CAD platform supports the CATIA three-dimensional data interface module, reads the wire harness 3D digital model information designed by CATIA, and quickly generates a 2D wire harness topology diagram.

6. A harness design system based on a CAD platform according to claim 1, characterized in that, The wire harness 2D assembly drawing drawing module supports two 2D wire harness drawing modes: Mode 1: Automatically generate the 2D assembly drawing of the wire harness through the CATIA 3D data interface and the wire harness schematic diagram; Mode 2: Design the 2D wire harness drawing through the wire harness CAD module, and the system can directly draw the 2D wire harness drawing through the wire harness CAD module.

7. A wire harness design system based on a CAD platform according to claim 1, characterized in that, The CAPP module for the process decomposition of the wire harness drawing, which is used for the process decomposition of the customer's 2D assembly drawing of the wire harness and outputs a set of complete and correct process guidance documents.

8. A wire harness design system based on a CAD platform according to claim 7, characterized in that, The operation process of the CAPP module for the process decomposition of the wire harness drawing is as follows: S1. The function of quickly converting customer drawings realizes the conversion of customer drawings into software drawings that can be recognized by the CAPP software; S2. The function of one-key matching of process parameters realizes the automatic matching of the process parameters required by the drawing through the big data maintained later; S3. The function of intelligent recommendation of the optimal solder joints. The software can automatically analyze the optimal solder joint positions of each loop and quickly complete the design of each solder joint through human-computer interaction; S4. The function of accurately calculating the wire length. The software accurately calculates the cutting length of each wire; S5. The function of one-key drawing of the punching diagram. The software can intelligently analyze the wire numbers of the left and right ends of the solder joints of each loop and automatically draw the welding schematic diagram; S6. The function of automatically generating various process data. The software can automatically generate various process data such as the wire cutting list, material BOM, pipe table, and sheath BOM table; S7. The function of quickly drawing the covering material. The software can intelligently analyze the diameter and length of the covering pipe for each branch and draw the covering pipe onto the drawing with one key. At the same time, the software supports drawing the branch encapsulation process onto the drawing with one key; S8. The function of one-key generating the pre-assembly drawing. The software has the function of intelligent analysis of the pre-assembly drawing and one-key drawing of the pre-assembly drawing; S9. The function of quickly designing the tooling board. Through the tooling board design module provided by the software, a 1:1 tooling board drawing can be quickly generated.

9. A harness design system based on a CAD platform according to claim 1, characterized in that The conduction test bench data generation module includes: The unit for drawing and managing the conduction test bench surface: includes the basic functions of adding, deleting, modifying, and querying the basic information of the conduction test bench surface, designing the layout drawing of the conduction test bench module, and maintaining the position coordinates and address codes of each pin of the conduction module; The intelligent recommendation unit for the optimal conduction test bench: extracts the drawing of the optimal test bench surface to be analyzed and can analyze the most suitable test bench surface for the current drawing; The matching unit for the wire harness drawing and the conduction test bench module: the wire harness design system on the CAD platform provides various rules based on the position number or sheath number to quickly match the wire harness sheath and the test bench module; The unit for generating and exporting the wire harness conduction test data: after all the sheaths of the wire harness drawing are matched to the corresponding modules of the test bench, the wire harness design system on the CAD platform can generate the conduction test data of the corresponding modified test bench for the drawing.

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