A mechanical product design method and device based on performance and RMS integration

Abstract

The present application belongs to the technical field of general quality characteristic design, and particularly relates to a mechanical product design method and device based on performance and RMS integration. The specific steps are as follows: considering that different levels of mechanisms of the mechanical product need to meet the performance requirements and RMS requirements at the same time during design, but the traditional design method of the mechanical product does not carry out the performance design and RMS design simultaneously, the problem of mechanical product performance and RMS design 'two skins' occurs, and finally the product cannot meet the performance requirements and RMS requirements at the same time. The present application establishes a targeted product system model and a mechanical mechanism database, clearly defines the design basis and design constraints of the product performance and RMS integration, can carry out the synchronous design of the mechanical product performance and RMS characteristics according to the characteristics of different products, can shorten the development cycle, save the development cost, improve the comprehensive performance of the product, and is convenient for the comprehensive management of product design.

Description

Technical Field

[0001] This invention belongs to the field of general quality characteristic design technology, specifically relating to a mechanical product design method and device based on the integration of performance and RMS. Background Technology

[0002] RMS is an abbreviation for Reliability, Maintainability, and Supportability. Integrated RMS design refers to improving the traditional independent design of each characteristic by transforming it into an integrated design. The goal and content of this optimized design is to rationally allocate the indicators of each characteristic. With the development of my country's innovation system and the application of high technology, the complexity and integration of mechanical products are increasing, placing increasingly higher demands on them.

[0003] Product design often focuses solely on RMS performance. Current research on integrated RMS design methods emphasizes the allocation of various indicators, neglecting other product requirements and resulting in poor overall performance of the designed mechanical products. Therefore, it is necessary to provide a method for effectively integrating product RMS with other product requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a mechanical product design method and apparatus based on the integration of performance and RMS, in order to solve the problem that the overall performance of the product is poor when only RMS performance is considered in the design.

[0005] To address the aforementioned technical problems, this invention provides a mechanical product design method based on the integration of performance and RMS, with the specific steps as follows:

[0006] 1) Conduct overall product design based on product performance requirements and the established product system model;

[0007] 2) Based on the overall plan and the established mechanical mechanism database, design each component in the mechanical product, combine different design schemes of each component and select the design scheme that meets the performance requirements; the mechanical mechanism database stores the design schemes of each component, and each component has at least one design scheme, and each design scheme is a design scheme that considers performance parameters and RMS parameters.

[0008] 3) Further screen the design schemes that meet the performance requirements selected in step 2) to select the design schemes that meet the top-level RMS index requirements, so as to realize the integrated design of mechanical product performance and RMS.

[0009] Its beneficial effects are as follows: Considering that the mechanisms at different levels of mechanical products need to simultaneously meet performance requirements and RMS requirements during the design process, but the traditional design methods for mechanical products have the problem that performance design and RMS design are not carried out simultaneously, resulting in the problem of "two separate skins" for mechanical product performance and RMS design, ultimately leading to the situation where the product cannot simultaneously meet the performance requirements and RMS requirements. This invention starts from each level and component of the product, and comprehensively considers the integrated design of product performance and RMS during the design process. By establishing a targeted product system model and a database of typical mechanical mechanisms, the design basis and design constraints for the integrated design of product performance and RMS are clarified. Product design work can be carried out quickly and efficiently. According to the characteristics of different products, the simultaneous design of mechanical product performance and RMS characteristics can be carried out, which can shorten the development cycle, save development costs, improve the overall performance of the product, and the design method has a clear idea, strong operability, and facilitates the comprehensive management of product design.

[0010] Furthermore, the established product system model includes a product structure model and a product design model:

[0011] The product structure model is used to reflect product information, which includes the composition of each level, physical architecture, functional division, hierarchical relationship and the number of components in each level group;

[0012] The product design model includes product design principles, design specifications, performance requirements, and RMS requirements. The design principles and design specifications are a summary of product design experience, while the performance requirements and RMS requirements are the user's requirements for using the product.

[0013] Its beneficial effects are: it subdivides mechanical products and designs them according to the characteristics of different products, so that the product design can meet the product performance requirements and RMS index requirements at each level and each component, and also meet the top-level index requirements when the components are combined with the overall product, making the integrated design of mechanical product performance and RMS faster and more efficient.

[0014] Furthermore, the established mechanical mechanism database also includes a product reliability database, a product maintainability database, and a product supportability database;

[0015] The product reliability library is used to collect and organize reliability data of different schemes in a database of typical mechanical mechanisms.

[0016] The product maintainability library is used to collect and organize maintainability data for different schemes in a database of typical mechanical mechanisms.

[0017] The product supportability library is used to collect and organize supportability data for different schemes in a database of typical mechanical mechanisms.

[0018] Its beneficial effects are: it can clearly display the performance parameters and RMS parameters of each component, which facilitates the selection of each component and the design of the scheme, makes the design ideas clearer, increases the diversity of choices, and improves the overall performance of the product design.

[0019] Furthermore, when a component of a mechanical product to be designed does not have a design scheme in the mechanical structure database, FMEA, FTA, and FMECA are performed on that component to obtain reliability, maintainability, and supportability data, and the mechanical structure database is then updated.

[0020] Its beneficial effects are: updating the information of newly designed schemes, expanding the mechanical mechanism database, providing options for the design of similar products in the future, improving the efficiency of product design, shortening the development cycle, saving development costs, and improving the overall performance of products.

[0021] To address the aforementioned technical problems, the present invention also provides a mechanical product design device based on performance and RMS integration, comprising a memory and a processor, wherein the processor is used to execute computer program instructions stored in the memory to achieve the following steps:

[0022] 1) Conduct overall product design based on product performance requirements and the established product system model;

[0023] 2) Based on the overall plan and the established mechanical mechanism database, design each component in the mechanical product, combine different design schemes of each component and select the design scheme that meets the performance requirements; the mechanical mechanism database stores the design schemes of each component, and each component has at least one design scheme, and each design scheme is a design scheme that considers performance parameters and RMS parameters.

[0024] 3) Further screen the design schemes that meet the performance requirements selected in step 2) to select the design schemes that meet the top-level RMS index requirements, so as to realize the integrated design of mechanical product performance and RMS.

[0025] Its beneficial effects are as follows: Considering that different levels of mechanical products may meet performance and RMS requirements during the design phase, but the final product may not simultaneously meet both requirements, this invention starts from each level and component of the product and comprehensively considers the integrated design of product performance and RMS during the design phase. By establishing targeted product system models and databases of typical mechanical mechanisms, the design basis and constraints for the integrated design of product performance and RMS are clarified. This allows for quick and efficient product design work, enabling simultaneous design of mechanical product performance and RMS characteristics based on the characteristics of different products. This can shorten the development cycle, save development costs, and improve the overall performance of the product. The design method is clear, highly operable, and facilitates the comprehensive management of product design.

[0026] Furthermore, the established product system model includes a product structure model and a product design model:

[0027] The product structure model is used to reflect product information, which includes the composition of each level, physical architecture, functional division, hierarchical relationship and the number of components in each level group;

[0028] The product design model includes product design principles, design specifications, performance requirements, and RMS requirements. The design principles and design specifications are a summary of product design experience, while the performance requirements and RMS requirements are the user's requirements for using the product.

[0029] Its beneficial effects are: it subdivides mechanical products and designs them according to the characteristics of different products, so that the product design can meet the product performance requirements and RMS index requirements at each level and each component, and also meet the top-level index requirements when the components are combined with the overall product, making the integrated design of mechanical product performance and RMS faster and more efficient.

[0030] Furthermore, the established mechanical mechanism database also includes a product reliability database, a product maintainability database, and a product supportability database;

[0031] The product reliability library is used to collect and organize reliability data of different schemes in a database of typical mechanical mechanisms.

[0032] The product maintainability library is used to collect and organize maintainability data for different schemes in a database of typical mechanical mechanisms.

[0033] The product supportability library is used to collect and organize supportability data for different schemes in a database of typical mechanical mechanisms.

[0034] Its beneficial effects are: it can clearly display the performance parameters and RMS parameters of each component, which facilitates the selection of each component and the design of the scheme, makes the design ideas clearer, increases the diversity of choices, and improves the overall performance of the product design.

[0035] Furthermore, when a component of a mechanical product to be designed does not have a design scheme in the mechanical structure database, FMEA, FTA, and FMECA are performed on that component to obtain reliability, maintainability, and supportability data, and the mechanical structure database is then updated.

[0036] Its beneficial effects are: updating the information of newly designed schemes, expanding the mechanical mechanism database, providing options for the design of similar products in the future, improving the efficiency of product design, shortening the development cycle, saving development costs, and improving the overall performance of products. Attached Figure Description

[0037] Figure 1 These are the implementation steps of the integrated design method of the present invention;

[0038] Figure 2 This is a schematic diagram of the product structure model of the present invention;

[0039] Figure 3 This is a diagram showing the composition of the database of typical mechanical mechanisms of this invention;

[0040] Figure 4 This is a flowchart of the integrated design method of the present invention;

[0041] Figure 5 This is a product structure model of a certain automobile according to the present invention. Detailed Implementation

[0042] The basic concept of this invention is as follows: establish a product system model and a database of typical mechanical mechanisms; design based on product performance and structure and the established database of mechanical mechanisms; combine different design schemes for each component and select the design scheme that meets the performance requirements; then, based on the RMS index requirements and the established database of mechanical mechanisms, select the design scheme that meets the top-level index requirements from the design schemes that meet the performance requirements, thereby realizing the integrated design of mechanical product performance and RMS.

[0043] The present invention will now be described in detail with reference to the accompanying drawings and method embodiments.

[0044] Method Implementation Examples:

[0045] The present invention provides a mechanical product design method based on the integration of performance and RMS, the implementation steps of which are as follows: Figure 1 As shown, the specific implementation steps are as follows:

[0046] Step 1: Establish a product system model, including a product structure model and a product design model.

[0047] 1) A product structure model can reflect information such as the composition of each level of a product, its physical architecture, functional division, hierarchical relationships, and the number of components in each level. A product structure model, for example... Figure 2 As shown.

[0048] 2) The product design model includes: product design principles, design specifications, performance requirements, and RMS requirements. Among them, the design principles and design specifications are a summary of product design experience, the performance requirements and RMS requirements are the user's requirements for the product, and the product design model is the basis for the integrated design of product performance and RMS.

[0049] Step two: Establish a database of typical mechanical mechanisms, including a database of typical mechanical mechanisms, a database of product reliability, a database of product maintainability, and a database of product supportability, such as... Figure 3 As shown. This database is used for unified access to performance and RMS data during product design, guiding the integrated design of product performance and RMS. The specific components of the typical mechanical mechanism database are as follows:

[0050] 1) The typical mechanical mechanism library is based on the product structure model, selecting typical mechanical mechanisms at different levels of the product, sorting out different design schemes for each typical mechanical mechanism, and summarizing the structural characteristics, applicable scope, advantages and disadvantages of each scheme, as shown in Table 1 below:

[0051] Table 1

[0052] Option 1 <![CDATA[X 11 ]]> …… <![CDATA[X n1 ]]> …… <![CDATA[Xi1]]> …… …… …… …… …… …… Solution j <![CDATA[X 1j ]]> …… <![CDATA[X nj ]]> …… <![CDATA[X ij ]]>

[0053] 2) The product reliability database is compiled from design, testing, and usage data of similar products, and organizes reliability data for different schemes in a typical mechanical mechanism database. This database includes information such as failure rate and failure modes, as shown in Table 2 below:

[0054] Table 2

[0055] Option 1 …… Solution j

[0056] 3) The product maintainability database collects and organizes maintainability data for different solutions in the typical mechanical mechanism database based on design, testing, and usage data of similar products. This database includes information such as maintenance level, maintenance time, maintenance tools, and maintenance personnel, as shown in Table 3 below:

[0057] Table 3

[0058] Option 1 …… Solution j

[0059] 4) The product supportability database collects and organizes supportability data for different solutions in the typical mechanical mechanism database based on design, testing, and usage data of similar products. This database includes information such as spare parts types, quantities, and technical documentation, as shown in Table 4 below:

[0060] Table 4

[0061] Option 1 …… Solution j

[0062] Step 3: Conduct integrated design of product performance and RMS, including solution design, reliability design, maintainability design, and supportability design. The integrated design methodology flowchart is shown below. Figure 4 As shown.

[0063] 1) Design the overall product scheme based on the product performance requirements and product structure; then design each component in the mechanical product based on the overall scheme and the established typical mechanical mechanism library, combine different design schemes of each component and select the design scheme that meets the performance requirements.

[0064] 2) Select the design scheme that meets the performance requirements from the design schemes selected in step 1) to meet the top-level RMS index requirements, so as to realize the integrated design of mechanical product performance and RMS; when a certain component of the mechanical product to be designed does not have a design scheme in the mechanical structure database, then FMEA (Failure Mode Analysis), FTA (Fault Tree Analysis) and FMECA (Failure Mode and Criticality Analysis) are carried out on the newly designed scheme of the component to obtain reliability, maintainability and supportability data and organize and update the mechanical structure database.

[0065] The following is a detailed explanation using a specific car as an example:

[0066] Step 1: Establish a product system model for the car.

[0067] 1) Establish its product structure model, such as Figure 5 As shown.

[0068] 2) Establish its product design model: The performance indicators of this car are: weight ≤ M kg, 100-meter acceleration ≥ am / s². 2 Braking safety distance ≤ S1m, collision safety distance ≤ S2m, etc.; RMS indicators include reliability R, maintenance time t, and available resources.

[0069] Step 2: Establish a database of typical mechanical mechanisms in automobiles.

[0070] 1) Establish a library of typical mechanical mechanisms for automobiles, as shown in Table 5 below.

[0071] Table 5. Typical Mechanical Mechanisms in Automobiles (Partial)

[0072]

[0073] 2) Establish a reliability database for automobiles, as shown in Table 6 below.

[0074] Table 6. Vehicle Reliability Database (Partial)

[0075]

[0076]

[0077] 3) Establish a vehicle maintenance inventory, as shown in Table 7 below.

[0078] Table 7. Partial Inventory of Automotive Repair Services

[0079]

[0080] 4) Establish a vehicle support warehouse, as shown in Table 8 below.

[0081] Table 8. Partial List of Vehicle Support Depots

[0082]

[0083] Step 3: Conduct integrated performance and RMS design for the vehicle.

[0084] Different types of automobiles have varying requirements. To meet these performance requirements, design schemes are developed for the overall vehicle structure, product design, and material selection. During performance design, the reliability, maintainability, and supportability of the chosen scheme should be comprehensively considered to ensure they meet performance specifications. For example, in product design, combinations of chassis scheme A and engine scheme A, chassis scheme A and engine scheme B, and chassis scheme B and engine scheme B may all meet performance requirements. Simultaneously, the RMS (Reliability, Maintenance, and Safety) indicators should be considered to ensure they meet the top-level performance requirements. Through integrated performance and RMS design analysis, the overall scheme combining chassis scheme A and engine scheme A is selected.

[0085] This embodiment starts from each level and component of the product, and comprehensively considers the integrated design of product performance and RMS during the design process. By establishing a targeted product system model and a database of typical mechanical mechanisms, the design basis and design constraints for the integrated design of product performance and RMS are clarified. This allows for quick and efficient product design work, and enables the simultaneous design of mechanical product performance and RMS characteristics according to the characteristics of different products. This can shorten the development cycle, save development costs, and improve the overall performance of the product. The design method is clear, highly operable, and facilitates the comprehensive management of product design.

[0086] Device Example:

[0087] An embodiment of a mechanical product design device based on integrated performance and RMS of the present invention includes a memory and a processor. The processor executes computer program instructions stored in the memory to implement the mechanical product design method based on integrated performance and RMS described in the method embodiment of the present invention. The processor can be a programmable logic device (FPGA) or other processing device. The memory can be various types of memory that store information using electrical energy, such as RAM, ROM, etc., or other types of memory that store information.

Claims

1. A mechanical product design method based on integration of performance and RMS, characterized by, include: 1) Conduct overall product design based on product performance requirements and the established product system model; The product system model includes a product design model and a product structure model that reflects product information. Product information includes the composition of each level, physical architecture, functional division, hierarchical relationship, and the number of components in each level. The product design model includes product design principles, design specifications, performance requirements, and RMS requirements. Design principles and design specifications are a summary of product design experience, while performance requirements and RMS requirements are the user's requirements for using the product. 2) Based on the overall plan and the established mechanical mechanism database, design each component in the mechanical product, combine different design schemes for each component, and select the design scheme that meets the performance requirements; the mechanical mechanism database stores the design schemes for each component, and each component has at least one design scheme, each of which is a design scheme that considers performance parameters and RMS parameters; the mechanical mechanism database also includes a product reliability database for collecting and organizing reliability data of different schemes in the typical mechanical mechanism database, a product maintainability database for collecting and organizing maintainability data of different schemes in the typical mechanical mechanism database, and a product supportability database for collecting and organizing supportability data of different schemes in the typical mechanical mechanism database; 3) Further filter the results of step 2) to select design schemes that meet the top-level RMS index requirements, so as to realize the integrated design of mechanical product performance and RMS.

2. The performance-based and RMS-integrated mechanical product design method according to claim 1, wherein, The product reliability database contains information on inefficiencies and failure modes.

3. The performance-based and RMS-integrated mechanical product design method according to claim 1, wherein, The product maintainability database contains information such as repair level, repair time, repair tools, and repair personnel.

4. The performance-based and RMS-integrated mechanical product design method according to claim 1, wherein, When a component of a mechanical product to be designed does not have a design scheme in the mechanical structure database, FMEA, FTA, and FMECA are performed on the component to obtain reliability, maintainability, and supportability data, and the mechanical structure database is then updated.

5. A mechanical product design device based on performance and RMS integration, characterized in that, It includes memory and a processor, the processor being used to execute computer program instructions stored in memory to perform the following steps: 1) Conduct overall product design based on product performance requirements and the established product system model; the product system model includes a product design model and a product structure model that reflects product information; product information includes the composition of each level, physical architecture, functional division, hierarchical relationships, and the number of components in each level; the product design model includes product design principles, design specifications, performance requirements, and RMS requirements. The design principles and design specifications are a summary of product design experience, while the performance requirements and RMS requirements are the user's requirements for using the product; 2) Based on the overall plan and the established mechanical mechanism database, design each component in the mechanical product, combine different design schemes for each component, and select the design scheme that meets the performance requirements; the mechanical mechanism database stores the design schemes for each component, and each component has at least one design scheme, each of which is a design scheme that considers performance parameters and RMS parameters; the mechanical mechanism database also includes a product reliability database for collecting and organizing reliability data of different schemes in the typical mechanical mechanism database, a product maintainability database for collecting and organizing maintainability data of different schemes in the typical mechanical mechanism database, and a product supportability database for collecting and organizing supportability data of different schemes in the typical mechanical mechanism database; 3) Further filter the results of step 2) to select design schemes that meet the top-level RMS index requirements, so as to realize the integrated design of mechanical product performance and RMS.

6. The mechanical product design device based on performance and RMS integration according to claim 5, characterized in that, The product reliability database contains information on inefficiencies and failure modes.

7. The mechanical product design device based on performance and RMS integration according to claim 5, characterized in that, The product maintainability database contains information such as repair level, repair time, repair tools, and repair personnel.

8. The mechanical product design device based on performance and RMS integration according to claim 5, characterized in that, When a component of a mechanical product to be designed does not have a design scheme in the mechanical structure database, FMEA, FTA, and FMECA are performed on the component to obtain reliability, maintainability, and supportability data, and the mechanical structure database is then updated.

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