Mechanical design method and device considering physical change of interface of movable part, equipment, medium and product

Abstract

The invention discloses a mechanical design method, device and equipment considering physical changes of a movable part interface, a medium and a product, and relates to the field of mechanical design. The method comprises the steps of obtaining design information; the design information is a product design scheme determined based on design needs; determining initialized part parameters according to the design information; three-dimensional modeling software is adopted, and a product three-dimensional model is constructed according to the initialized part parameters; based on the interface condition, performing dynamic simulation on the three-dimensional model by adopting simulation software to obtain a simulation result; comparing the simulation result with a preset product performance index to obtain a comparison result; if not, the initialized part parameters are adjusted; if yes, mechanical design is conducted according to the corresponding part parameters based on the product three-dimensional model, and a design result is obtained; the design result comprises an engineering drawing and an assembly drawing. The precision of mechanical design can be improved.

Description

Technical Field

[0001] The present application relates to the field of mechanical design, and in particular to a mechanical design method, device, equipment, medium and product that take into account physical changes in the interface of moving parts. Background Art

[0002] Design is a way to find solutions to new technical problems, but using a methodical design method can significantly improve work efficiency. From ancient times to the present, the development of design has gone through manual design and computer design, and the elements considered in the design are geometric elements and mechanical elements. It is well known that during the movement of any moving parts, physical changes will occur at the contact interface, and this change will affect the movement function of the moving parts. Design is the foundation of the development of the manufacturing industry. Without advanced design as a support, there will be no advanced manufacturing industry. Therefore, a precise design method that considers the physical changes of the interface of moving parts is bound to be an inevitable choice for the development of advanced design.

[0003] Mechanical engineers pay a lot of attention to interfaces and do not doubt the importance of mechanical interfaces. For example, Ullman pointed out that most designs focus on the connection between components, and changes in interfaces and process flows are important for product development. NASA's research on interface control clearly pointed out that interface design is a process in which the design parameters of one part affect the design parameters of another part. However, although the importance of interface changes is currently recognized, a design concept that takes into account physical changes in interfaces has not yet been formed. Summary of the invention

[0004] The purpose of this application is to provide a mechanical design method, device, equipment, medium and product that take into account the physical changes of the interface of moving parts, which can improve the accuracy of mechanical design.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] In a first aspect, the present application provides a mechanical design method that takes into account physical changes in the interface of a moving part, including:

[0007] Acquire design information; the design information is a product design scheme determined based on design needs; the product design scheme includes product concept and product architecture;

[0008] Determining initialized part parameters according to the design information;

[0009] Use 3D modeling software to build a 3D model of the product based on the initialized part parameters;

[0010] Based on the interface conditions, the three-dimensional model is subjected to dynamic simulation using simulation software to obtain simulation results; the interface conditions include known interface conditions and unknown interface conditions; the interface conditions include normal contact force and friction force of the material;

[0011] Compare the simulation results with the preset product performance indicators to obtain a comparison result;

[0012] If the comparison result is inconsistent, the initialized part parameters are adjusted, and the process returns to "using 3D modeling software to construct a 3D model of the product according to the initialized part parameters";

[0013] If the comparison result is consistent, mechanical design is performed based on the product three-dimensional model and corresponding part parameters to obtain a design result; the design result includes: an engineering drawing and an assembly drawing.

[0014] Optionally, based on the interface conditions, a simulation software is used to perform dynamic simulation on the three-dimensional model to obtain simulation results, specifically including:

[0015] When the interface condition is unknown, the performance data is determined based on a semi-physical test method; the performance data includes: boundary parameters and contact parameters; the boundary parameters include: drive and load; the contact parameters include: contact force and contact deformation parameters;

[0016] Determine the interface conditions at the contact interface according to the performance data; at this time, the interface conditions are corrected from unknown interface conditions to known interface conditions;

[0017] When the interface condition is known, the simulation software is used to perform dynamic simulation on the three-dimensional model according to the corresponding interface condition and the set simulation step size to obtain the simulation result.

[0018] Optionally, the semi-physical test method is to conduct physical simulation and testing by combining theory with experiment.

[0019] Optionally, the semi-physical test method is implemented based on a semi-physical simulation prototype; the semi-physical simulation prototype adopts an equivalent substitution method to perform physical simulation by applying driving force / torque and load force / torque.

[0020] Optionally, the mechanical design method considering physical changes of the interface of the movable parts further includes:

[0021] Documentation is performed based on the design results and stored.

[0022] Optionally, the part parameters include: size, tolerance, material properties, processing parameters, assembly parameters and lubrication parameters.

[0023] In a second aspect, the present application provides a mechanical design device that takes into account physical changes in the interface of a moving part, comprising:

[0024] A data acquisition module, used to acquire design information; the design information is a product design scheme determined based on design needs; the product design scheme includes product concept and product architecture;

[0025] A part parameter determination module, used to determine the initialized part parameters according to the design information;

[0026] A modeling module is used to construct a three-dimensional model of a product according to initialized part parameters using three-dimensional modeling software;

[0027] A simulation module, used to perform dynamic simulation on the three-dimensional model using simulation software based on interface conditions to obtain simulation results; the interface conditions include known interface conditions and unknown interface conditions; the interface conditions include normal contact force and friction force of the material;

[0028] A comparison module, used to compare the simulation result with a preset product performance index to obtain a comparison result;

[0029] An adjustment module, used for adjusting the initialized part parameters when the comparison result is inconsistent, and returning to the "modeling module";

[0030] The design module is used to perform mechanical design based on the three-dimensional model of the product and the corresponding part parameters to obtain design results when the comparison results are consistent; the design results include: engineering drawings and assembly drawings.

[0031] In a third aspect, the present application provides a computer device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the mechanical design method described above that considers physical changes in the interface of moving parts.

[0032] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned mechanical design method that takes into account physical changes in the interface of moving parts.

[0033] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the above-mentioned mechanical design method that takes into account physical changes in the interface of moving parts.

[0034] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0035] The present application provides a mechanical design method, device, equipment, medium and product that considers the physical changes of the interface of the moving parts, by determining the initialized part parameters according to the design information; using 3D modeling software to build a 3D model of the product according to the initialized part parameters; based on the interface conditions, using simulation software to perform dynamic simulation on the 3D model to obtain simulation results; comparing the simulation results with the preset product performance indicators to obtain comparison results; if they are inconsistent, adjusting the initialized part parameters; if they are consistent, based on the 3D model of the product, mechanical design is performed according to the corresponding part parameters to obtain design results. Since the present application is based on the 3D model and dynamic simulation, the performance index comparison and part parameter adjustment are performed, so that the accuracy of the design results is improved, and thus, the present application can improve the accuracy of mechanical design. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is a flow chart of a mechanical design method that takes into account physical changes in the interface of a moving part in one embodiment of the present application;

[0038] Figure 2 A schematic diagram of the structure of a computer device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0041] The method mentioned in this application is intended to achieve high-precision design. The mechanical interface refers to the contact surface of the kinematic pairs of the mechanism joints that constitute the topological structure, as well as the assembly surface of the mechanical structure. The joint has a motion function, and the relative motion of the kinematic pairs occurs at the contact surface. Since there is generally a certain gap between the assembly surfaces, there will be a small relative motion between the assembly surfaces.

[0042] The scales involved in the contact surface and the assembly surface are usually micrometers or submicrometers, that is, mesoscopic scales.

[0043] The atomic composition and structure of interface atoms are different from those of the material itself, and can be considered to belong to the interface state in thermodynamics. Pursuing the laws of the influence of micro- and mesoscopic processes on macroscopic mechanical motion is a new challenge facing mechanics. Mechanical research is inseparable from macroscopic motion functions. When mechanical devices perform motion or assembly operations, the changes in the interface thermodynamic state and dynamic processes of the movable joints or assembly surfaces should be regarded as the physical connotation of the main cross-scale research in mechanics. However, the changes in the thermodynamic state of the interface are studied by physicists, and mechanical engineers have no time to take care of such processes. There are obstacles and barriers in the intersection of mechanics and interface science.

[0044] like Figure 1 As shown, the present application provides a mechanical design method considering physical changes in the interface of moving parts, the method comprising:

[0045] Step 100: Obtain design information. Design information is a product design solution determined based on design needs; the product design solution includes product concept and product architecture.

[0046] Step 200: Determine the initialized part parameters according to the design information, wherein the part parameters include: size, tolerance, material properties, processing parameters, assembly parameters and lubrication parameters.

[0047] Step 300: Use 3D modeling software to construct a 3D model of the product according to the initialized part parameters.

[0048] Step 400: Based on the interface conditions, a simulation software is used to perform dynamic simulation on the three-dimensional model to obtain simulation results. The interface conditions include known interface conditions and unknown interface conditions; the interface conditions include the normal contact force and friction force of the material.

[0049] Step 500: Compare the simulation result with the preset product performance index to obtain a comparison result.

[0050] Step 600 : If the comparison result is inconsistent, the initialized part parameters are adjusted and the process returns to step 300 .

[0051] Step 700: If the comparison result is consistent, mechanical design is performed based on the product 3D model and the corresponding part parameters to obtain a design result, which includes an engineering drawing and an assembly drawing.

[0052] In one embodiment, based on the interface conditions, a simulation software is used to perform dynamic simulation on the three-dimensional model to obtain simulation results, which specifically include:

[0053] When the interface condition is unknown, the performance data is determined based on semi-physical test methods; the performance data includes: boundary parameters and contact parameters; the boundary parameters include: drive and load; the contact parameters include: contact force and contact deformation parameters.

[0054] The interface conditions at the contact interface are determined based on the performance data; at this time, the interface condition situation is corrected from unknown interface conditions to known interface conditions.

[0055] When the interface conditions are known, the simulation software is used to perform dynamic simulation on the three-dimensional model according to the corresponding interface conditions and the set simulation step size to obtain the simulation results.

[0056] Among them, the semi-physical experimental method adopts a combination of theory and experiment to conduct physical simulation and experiment.

[0057] The semi-physical test method is based on the semi-physical simulation prototype; the semi-physical simulation prototype adopts the equivalent substitution method to perform physical simulation by applying driving force / torque and load force / torque.

[0058] As an optional implementation, the mechanical design method considering physical changes in the interface of the moving parts further includes: compiling and storing files based on the design results.

[0059] This application proposes the concept of "physical design" and adopts the physical design link in mechanical design. Physical design is a design method that uses physical measurement research methods and mathematical modeling to obtain the required design parameters and realize the expression of the physical process of the mechanical interface in the mechanical design language.

[0060] In practical applications, the methods of physical design generally include the following: physical process analysis of active interfaces or assembly interfaces; establishing physical models and semi-physical simulation test methods; conducting simulation tests to obtain experimental data; data analysis and mathematical modeling; kinematic and dynamic modeling; environmental test verification; and the application of physical design in mechanical design.

[0061] Specifically, step one: according to functional requirements, determine the new functions that the design needs to meet that cannot be met by existing products; query relevant information, seek and choose what new technologies to introduce to achieve new functional requirements; propose a variety of feasible technical means and product concepts through brain decision-making; according to performance indicator requirements, evaluate various technical means and product concepts, and select the best solutions and concepts; design the product architecture based on the determined product concept.

[0062] Step 2: When the contact interface conditions are known, each part can be directly defined by initial parameterization to obtain the initialized part parameters; based on the size and position information of each part, use 3D modeling software to design the 3D model of the product; import the 3D model of the product into the simulation software, perform dynamic simulation on it, and compare the simulation results with the product performance indicators to evaluate whether the initialized part parameters are reasonable. If the dynamic simulation results are consistent with the product performance indicators, it is judged to be reasonable.

[0063] If they are not consistent, it is unreasonable. If it is unreasonable, the defined initialized part parameters and 3D model need to be changed until each part parameter meets the performance requirements.

[0064] Step 2: When the contact interface conditions are known, use 3D modeling software to design a 3D model of the product based on the size and position information of each part. Import the 3D model of the product into the simulation software for dynamic simulation. By comparing the simulation results with the product performance indicators, evaluate whether the initial parameters of the parts, that is, the initialized part parameters, are reasonable. If the motion accuracy of the product in the dynamic simulation results is higher than the expected accuracy, the initialized part parameter settings are reasonable; otherwise, the initialized part parameter settings are unreasonable. If the initialized part parameter settings are unreasonable, the initialized part parameters need to be adjusted or changed. Known interface conditions mean that the selected material is an existing conventional material, and its normal contact force model and friction force model are known.

[0065] Changes to the initialized part parameters include:

[0066] 1. Adjust parameters: Adjust key parameters such as dimensions, tolerances, material properties, etc. based on simulation results to meet performance requirements.

[0067] 2. Adjust the structure: Optimize the structure of the parts to improve the overall performance and stability.

[0068] 3. Replace materials: Replace materials to increase strength, reduce weight or improve other performance indicators based on performance requirements.

[0069] After the above adjustments or changes are completed, perform dynamic simulation again. If the simulation results meet the design requirements, the new parameter settings are reasonable. If not, further adjust the parameters and repeat the simulation verification process.

[0070] When the contact interface conditions are unknown, it is necessary to obtain the boundary parameters of the key moving parts through semi-physical test methods. Unknown interface conditions means that when the selected material is a new material, its normal contact force model and friction force model are unknown. The specific steps are as follows: select the key moving parts in the product structure, and perform initial parameterization definition on each part of the key moving parts; use 3D modeling software to complete the 3D modeling of the key moving parts according to the size information and position information of each part; import the 3D model of the key moving parts into the simulation software, and perform dynamic simulation analysis on it; compare the simulation analysis results with the performance indicators of the key moving parts , evaluate whether the initial parameters of each part in the key moving parts are reasonable. If the dynamic simulation results are consistent with the product performance indicators, it is judged to be reasonable. If they are not consistent, it is unreasonable. If it is unreasonable, the defined initial parameters and three-dimensional models need to be changed; how to be reasonable, you can directly draw engineering drawings and assembly drawings of key moving parts according to the defined part parameters; according to the part engineering drawings, complete the part processing work; according to the assembly requirements in the assembly drawings of key moving parts, complete the semi-physical (key moving parts) prototype assembly work; the semi-physical simulation prototype consists of moving parts, drive simulation units, load simulation units, sensor measurement units and control units. Among them, the drive simulation unit and the load simulation unit are both designed using the equivalent substitution method, which are used to simulate the driving force / torque and load force / torque acting on the moving parts respectively. The sensor measurement unit is used to obtain the change in the input and output parameters of the moving parts during the movement process. If the moving parts have rotation characteristics, the selected sensors are encoders, inertial measurement units, and laser displacement ranging sensors; if the moving parts have mobile characteristics, the selected sensors are laser displacement ranging sensors. These sensors should be reasonably arranged according to the needs of obtaining performance characterization parameters. The control unit is used to control the actions of the actuators in the drive simulation unit and the load simulation unit, thereby achieving various control requirements of the semi-physical prototype.

[0071] Apply external loads according to environmental conditions, read and record the readings of each sensor; use the acquired data to identify the normal contact force model and friction force model of the active component, and use the above two models for dynamic modeling of the active component; then, use numerical calculation software to write a dynamic equation solver to obtain the boundary conditions at the contact interface. After completing the above process, the parameters of the key active components can be used in the product architecture design, and the subsequent design process is the same as when the boundary conditions are known.

[0072] Apply external loads according to environmental conditions, read and record the readings of each sensor; use the acquired data to identify the normal contact force model and friction force model at the contact interface of the moving parts. When the normal contact force model and friction force model at the contact interface are obtained, subsequent operations can be performed according to the known interface conditions.

[0073] Step 3: Draw engineering drawings and assembly drawings based on the defined part parameters, and complete the preparation of technical documents.

[0074] The contents included in the first link include: demand analysis, functional analysis, functional structure selection, solution composition, evaluation system and evaluation method. In the second link, the contact includes: contact force and contact deformation parameters. In the second link, two processing methods are proposed: known interface conditions and unknown interface conditions. When the interface conditions are known, the virtual prototype simulation results are analyzed and evaluated to determine whether the initial definition of the parameters is reasonable. The initial definition of the parameters here includes: part size parameters, part material properties, part processing parameters, part assembly parameters, and moving parts lubrication parameters. When the initial definition of the parameters is judged to be unreasonable, the parameter correction process follows: part → assembly → component → component → final assembly.

[0075] When the interface conditions are unknown, the initial definition of the key active component parameters includes: the size parameters, material properties, processing parameters, assembly parameters, and lubrication parameters of each part that constitutes the key active component. When the initial definition of the parameters of each part in the key active component is determined to be unreasonable, the parameter correction process follows: part → assembly → component → part.

[0076] When the interface conditions are unknown, the virtual prototype simulation of key moving parts is only the result under the working conditions that can be simulated. For example, aerospace machinery and equipment often serve in the space environment, which is a relatively complex environment. The space environment has the characteristics of ultra-low temperature, strong radiation, high vacuum and microgravity; among them, ultra-low temperature, strong radiation and high vacuum are working conditions that can be simulated on the ground. However, microgravity cannot be simulated realistically and for a long time on the ground. Therefore, microgravity is a working condition that aerospace machinery and equipment cannot simulate at present. For working conditions that cannot be simulated, semi-physical simulation and experimental technology must be carried out. The development of semi-physical simulation and experimental technology includes two parts: theoretical research and experimental research. The key parameters (gap size, friction coefficient, vibration spectrum) used in the data analysis and modeling, kinematic modeling, and dynamic modeling of the theoretical research part need to be determined based on the experimental research of the on-orbit environment.

[0077] The specific research contents of semi-physical simulation and experimental technology include: the influence of changes in part size parameters on the performance of key moving parts; the influence of changes in part material properties on the performance of key moving parts; the influence of changes in part processing parameters on the performance of key moving parts; the influence of changes in part assembly parameters on the performance of key moving parts; the influence of changes in part lubrication parameters on the performance of key moving parts; the influence of different external loads on the performance of key moving parts; the influence of different motion conditions on the performance of key moving parts; the influence of other specific environments (vacuum, radiation, high and low temperature, high and low pressure) on the performance of key moving parts.

[0078] Through the semi-physical simulation and experimental technology research of key active components, a large amount of data can be obtained. According to the changes of independent variables in the data, the relationship between the dependent variables and the independent variables can be determined; and the large amount of data can be aggregated to establish a database.

[0079] In the second link, the process when the interface conditions are unknown is actually to obtain the constraints of the service environment of the mechanical device. When the constraints of the key active parts are known, it is easy to expand them to various mechanical devices.

[0080] In the above design process, the initial definition of part parameters, 3D modeling, part drawings, assembly drawings, and working condition factors involved are all related to the physical changes of the active interface or assembly interface and need to be determined based on the data obtained from semi-physical tests.

[0081] The parameters that characterize the performance of key moving parts in semi-physical tests (gap size, lubrication, friction, wear, etc.) are all measured by sensors. When installing various sensors, care should be taken that the use of the sensors does not affect their functions.

[0082] Based on the same inventive concept, the embodiment of the present application also provides a mechanical design device for considering the physical changes of the interface of the movable parts for implementing the mechanical design method for considering the physical changes of the interface of the movable parts involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more embodiments of the mechanical design device for considering the physical changes of the interface of the movable parts provided below can be referred to the limitations of the mechanical design method for considering the physical changes of the interface of the movable parts above, and will not be repeated here.

[0083] In an exemplary embodiment, a mechanical design device considering physical changes in the interface of a moving part is provided, comprising:

[0084] The data acquisition module is used to acquire design information; the design information is a product design plan determined based on design needs; the product design plan includes product concept and product architecture.

[0085] The part parameter determination module is used to determine the initialized part parameters according to the design information.

[0086] The modeling module is used to use 3D modeling software to build a 3D model of the product according to the initialized part parameters.

[0087] The simulation module is used to perform dynamic simulation on the three-dimensional model using simulation software based on interface conditions to obtain simulation results; the interface conditions include known interface conditions and unknown interface conditions; the interface conditions include the normal contact force and friction force of the material.

[0088] The comparison module is used to compare the simulation results with the preset product performance indicators to obtain the comparison results.

[0089] The adjustment module is used to adjust the initialized part parameters and return to the "modeling module" when the comparison results are inconsistent.

[0090] The design module is used to perform mechanical design based on the product 3D model and the corresponding part parameters to obtain design results when the comparison results are consistent; the design results include: engineering drawings and assembly drawings.

[0091] In an exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Figure 2 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a mechanical design method that takes into account the physical changes of the interface of the moving parts is implemented.

[0092] Those skilled in the art will understand that Figure 2 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0093] In an exemplary embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0094] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0095] In an exemplary embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0096] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0097] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0098] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0099] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A mechanical design method considering physical changes in the interface of moving parts, characterized in that: The mechanical design method considering physical changes in the interface of the moving parts includes: Acquire design information; the design information is a product design solution determined based on design needs; the product design solution includes product concept and product architecture; Determining initialized part parameters according to the design information; Use 3D modeling software to build a 3D model of the product based on the initialized part parameters; Based on the interface conditions, the three-dimensional model is subjected to dynamic simulation using simulation software to obtain simulation results; the interface conditions include known interface conditions and unknown interface conditions; the interface conditions include normal contact force and friction force of the material; Compare the simulation results with the preset product performance indicators to obtain a comparison result; If the comparison result is inconsistent, the initialized part parameters are adjusted, and "using 3D modeling software to build a 3D model of the product according to the initialized part parameters" is returned; If the comparison result is consistent, mechanical design is performed based on the product three-dimensional model and corresponding part parameters to obtain a design result; the design result includes: an engineering drawing and an assembly drawing.

2. The mechanical design method considering the physical changes of the interface of the moving parts according to claim 1 is characterized in that: Based on the interface conditions, the three-dimensional model is subjected to dynamic simulation using simulation software to obtain simulation results, including: When the interface condition is unknown, the performance data is determined based on a semi-physical test method; the performance data includes: boundary parameters and contact parameters; the boundary parameters include: drive and load; the contact parameters include: contact force and contact deformation parameters; Determine the interface conditions at the contact interface according to the performance data; at this time, the interface conditions are corrected from unknown interface conditions to known interface conditions; When the interface condition is known, the simulation software is used to perform dynamic simulation on the three-dimensional model according to the corresponding interface condition and the set simulation step size to obtain the simulation result.

3. The mechanical design method considering physical changes in the interface of movable parts according to claim 2, characterized in that: The semi-physical test method adopts a combination of theory and experiment to carry out physical simulation and experiment.

4. The mechanical design method considering physical changes of the interface of movable parts according to claim 2, characterized in that: The semi-physical test method is implemented based on a semi-physical simulation prototype; the semi-physical simulation prototype adopts an equivalent substitution method to perform physical simulation by applying a driving force / torque and a load force / torque.

5. The mechanical design method considering physical changes of the interface of movable parts according to claim 1, characterized in that: The mechanical design method considering physical changes in the interface of the moving parts also includes: Documentation is performed based on the design results and stored.

6. The mechanical design method considering physical changes of the interface of movable parts according to claim 1, characterized in that: The part parameters include: size, tolerance, material properties, processing parameters, assembly parameters and lubrication parameters.

7. A mechanical design device that takes into account physical changes in the interface of moving parts, characterized in that: The mechanical design device considering the physical changes of the interface of the moving parts comprises: A data acquisition module, used to acquire design information; the design information is a product design scheme determined based on design needs; the product design scheme includes product concept and product architecture; A part parameter determination module, used to determine the initialized part parameters according to the design information; A modeling module is used to construct a three-dimensional model of a product according to initialized part parameters using three-dimensional modeling software; A simulation module, used to perform dynamic simulation on the three-dimensional model using simulation software based on interface conditions to obtain simulation results; the interface conditions include known interface conditions and unknown interface conditions; the interface conditions include normal contact force and friction force of the material; A comparison module, used to compare the simulation result with a preset product performance indicator to obtain a comparison result; An adjustment module, used for adjusting the initialized part parameters when the comparison result is inconsistent, and returning to the "modeling module"; The design module is used to perform mechanical design based on the three-dimensional model of the product and the corresponding part parameters to obtain a design result when the comparison result is consistent; the design result includes: an engineering drawing and an assembly drawing.

8. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the mechanical design method considering physical changes of the interface of moving parts as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the mechanical design method taking into account the physical changes of the interface of the moving parts as described in any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the mechanical design method taking into account the physical changes of the interface of the moving parts as described in any one of claims 1 to 6 is implemented.

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