Elastic flexibility test method for component mounting holes of a threaded connection system

Abstract

An embodiment of the present invention discloses a method for testing the elastic flexibility of a component mounting hole of a threaded connection system, obtaining a first deformation amount of the bolt after the first tightening and a first angle with the initial position, and determining a first clamping force according to the corresponding function between the clamping force and the deformation amount; obtaining a second deformation amount of the bolt after the second tightening and a second angle with the initial position; and determining a second clamping force according to the corresponding function between the clamping force and the deformation amount. This test method uses the actual assembled parts in the threaded connection system for testing, and measures the clamping force difference ΔF, the deformation amount difference Δl b and the angle difference Δθ by tightening the bolts of the actual assembled parts twice, and then determines the elastic flexibility δ of the component mounting hole of the threaded connection system p , so as to realize measuring the elastic flexibility of the component mounting hole in the threaded connection system when the deformation amount of the component is very small and the structure is not damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of testing the elastic compliance of components, and particularly to a method for testing the elastic compliance of the mounting holes of components in a threaded connection system. Background Art

[0002] Threaded connections are widely used because they are easy to disassemble and can be reused multiple times. For a threaded connection system to be stable and keep components from separating under external load impacts or vibrations, and for the entire connection system to function properly, it is necessary to understand the load distribution relationship between the fasteners and components in the threaded connection system. For this purpose, it is necessary to accurately measure the elastic compliance of the fasteners and components.

[0003] Currently, there are many methods for measuring the elastic compliance of fasteners, such as measuring through a stretching device. Since the deformation amount of the mounting holes of components in a threaded connection system is very small, it is difficult to measure its elastic compliance by general methods without damaging the structure. Summary of the Invention

[0004] To solve the existing technical problems, an embodiment of the present invention provides a method for testing the elastic compliance of the mounting holes of components in a threaded connection system, which can solve the technical problem that it is difficult to obtain the elastic compliance of components by general testing methods when the deformation amount is very small and the structure is not damaged.

[0005] To achieve the above object, the technical solution of the embodiment of the present invention is realized as follows:

[0006] An embodiment of the present invention provides a method for testing the elastic compliance of the mounting holes of components in a threaded connection system, the method comprising:

[0007] Obtaining the first deformation amount of the bolt after the first tightening and the first angle with the initial position;

[0008] Determining the first clamping force according to the corresponding function between the clamping force and the deformation amount;

[0009] Obtaining the second deformation amount of the bolt after the second tightening and the second angle with the initial position;

[0010] Determining the second clamping force according to the corresponding function between the clamping force and the deformation amount;

[0011] Determining the difference in clamping force of the bolt after two adjacent tightenings according to the first clamping force and the second clamping force;

[0012] Determining the difference in deformation amount of the bolt after two adjacent tightenings according to the first deformation amount and the second deformation amount;

[0013] Determine the angular difference of the bolt after being tightened twice adjacent to each other according to the first angle and the second angle;

[0014] Determine the elastic compliance of the mounting hole of the component of the threaded connection system according to the clamping force difference, the deformation amount difference, the angular difference and the pitch of the bolt according to the elastic compliance calculation strategy.

[0015] Preferably, the pitch of the bolt is data pre-built in or temporarily input.

[0016] Preferably, the determining of the first clamping force according to the corresponding function between the clamping force and the deformation amount includes:

[0017] Obtain the deformation amount after the bolt is tightened multiple times. At the same time, obtain the clamping force after the bolt is tightened multiple times to obtain multiple sets of data of the deformation amount and the clamping force, wherein the deformation amount and the clamping force are in a one-to-one correspondence;

[0018] Determine the corresponding function between the clamping force and the deformation amount according to multiple sets of data of the deformation amount and the clamping force;

[0019] Determine the first clamping force according to the corresponding function between the clamping force and the deformation amount.

[0020] The test system includes an ultrasonic deformation measuring device, an ultrasonic patch, a force sensor device, a nut, a bolt, an angle sensor and an actual assembled part

[0021] An embodiment of the present invention also provides an elastic compliance test device for a mounting hole of a component of a threaded connection system, including:

[0022] A first acquisition module, configured to acquire a first deformation amount after the bolt is tightened for the first time and a first angle with respect to the initial position;

[0023] A first determination module, configured to determine a first clamping force according to the corresponding function between the clamping force and the deformation amount

[0024] A second acquisition module, configured to acquire a second deformation amount after the bolt is tightened for the second time and a second angle with respect to the initial position;

[0025] A second determination module, configured to determine a second clamping force according to the corresponding function between the clamping force and the deformation amount;

[0026] A third determination module, configured to determine the clamping force difference of the bolt after being tightened twice adjacent to each other according to the first clamping force and the second clamping force;

[0027] A fourth determination module, configured to determine the deformation amount difference of the bolt after being tightened twice adjacent to each other according to the first deformation amount and the second deformation amount;

[0028] A fifth determination module, configured to determine an angular difference of the bolt after being tightened twice adjacent to each other according to the first angle and the second angle;

[0029] A sixth determination module, configured to determine an elastic compliance of a component mounting hole of a threaded connection system according to the clamping force difference, the deformation amount difference, the angular difference, and a pitch of the bolt according to an elastic compliance calculation strategy.

[0030] An embodiment of the present invention further provides an elastic compliance test system for a component mounting hole of a threaded connection system. The test system is applied to the test method, and is characterized in that the test system includes an ultrasonic deformation measuring device, an ultrasonic patch, a force sensor device, a nut, a bolt, an angle sensor, and an actual assembly part;

[0031] When obtaining a corresponding function relationship between the clamping force and the deformation amount, the bolt is matched with the nut, the force sensor device is arranged between the bolt and the nut, the ultrasonic patch is arranged at an end of the bolt, the ultrasonic deformation measuring device is in contact connection with the ultrasonic patch, and the angle sensor is configured to measure a rotation angle of the bolt;

[0032] When the bolt is tightened for the second time, the bolt is matched with the nut, an actual assembly part is arranged between the bolt and the nut, the ultrasonic patch is arranged at an end of the bolt, the ultrasonic deformation measuring device is in contact connection with the ultrasonic patch, and the angle sensor is configured to measure a rotation angle of the bolt.

[0033] Preferably, two end portions of a head and a tail of the bolt are two parallel planes.

[0034] Preferably, there is one ultrasonic patch, and it is pasted at a plane center of any end portion of the bolt.

[0035] Preferably, an axial depth of a mounting hole of the force sensor device is the same as an axial depth of a mounting hole diameter of a component to be measured.

[0036] An embodiment of the present invention further provides a computer device, including: a processor and a memory for storing a computer program capable of running on the processor, wherein when the processor is used to run the computer program, the test method is implemented.

[0037] An embodiment of the present invention further provides a computer storage medium, storing an executable program, and when the executable program is executed by a processor, the test method is implemented.

[0038] A method for testing the elastic flexibility of the component mounting holes of a threaded connection system provided by the above embodiments. This testing method uses the actual assembled parts in the threaded connection system for testing. By tightening the bolts in the actual assembled parts twice, the clamping force difference ΔF, the deformation amount difference Δl b and the angle difference Δθ are measured, and then the elastic flexibility δ of the component mounting holes of the threaded connection system is determined p , so as to realize that the elastic flexibility of the component mounting holes in the threaded connection system can be measured when the deformation amount of the components is very small and the structure is not damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the structure of the bolt and the ultrasonic patch provided by an embodiment of the present invention;

[0040] Figure 2 Schematic diagram of the structure of the test system when obtaining the corresponding function relationship between the clamping force and the deformation amount provided by an embodiment of the present invention;

[0041] Figure 3 Schematic diagram of the structure of the test system after the bolt is tightened for the second time provided by an embodiment of the present invention;

[0042] Figure 4 Schematic diagram of the flow of the method provided by an embodiment of the present invention;

[0043] Figure 5 Schematic diagram for calculating the elastic flexibility of the component mounting holes of the threaded connection system provided by an embodiment of the present invention;

[0044] Figure 6 Schematic diagram of the structure of the device provided by an embodiment of the present invention;

[0045] Figure 7 Schematic diagram of the structure of the computer device provided by an embodiment of the present invention; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] The following further describes the present invention in detail with reference to embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0048] A method for testing the elastic flexibility of the component mounting holes of a threaded connection system provided in an embodiment of the present invention belongs to the technical field of testing the elastic flexibility of components, and the application scenarios can be: scenarios such as testing the elastic flexibility of the component mounting holes of a threaded connection system. It can be understood that in the prior art, there are many methods for measuring the elastic flexibility of fasteners, such as measuring through a stretching device. Since the deformation amount of the component mounting holes in the threaded connection system is very small, it is difficult to measure its elastic flexibility by general methods without damaging the structure.

[0049] Based on this, how to provide a method for testing the elastic flexibility of the component mounting holes in the threaded connection system without damaging the structure is an urgent technical problem to be solved.

[0050] It should be noted that this method is executed by a computer device. It should be explained that here the computer device refers to any device with computing and processing functions, including but not limited to fixed terminal devices or mobile terminal devices. The fixed terminal device may include but not be limited to desktop computers or computer devices, etc., and the mobile terminal device may include but not be limited to mobile phones, tablet computers, wearable devices or laptop computers, etc.

[0051] The technical solution of the present invention will be further elaborated in detail below in conjunction with the drawings and specific embodiments.

[0052] Refer to Figure 1-3 , an embodiment of the present invention provides a system for testing the elastic flexibility of the component mounting holes of a threaded connection system. The testing system is applied to the testing method, and the testing system includes an ultrasonic deformation measuring device 7, an ultrasonic patch 2, a force sensor device 3, a nut 4, a bolt 1, an angle sensor 5, and actual assembled parts 8 and 9.

[0053] In some embodiments, the two end portions of the head and the tail of the bolt 1 are two parallel planes.

[0054] In some embodiments, the roughness of the planes at the two end portions of the bolt 1 is not greater than 20 μm.

[0055] In some embodiments, there is one ultrasonic patch 2, which is pasted at the center of the plane of any end portion of the bolt 1.

[0056] In some embodiments, the axial depth of the mounting hole of the force sensor device 3 is the same as the axial depth of the diameter of the component to be tested.

[0057] In some embodiments, a tightening tool 6 is further included, and the bolt 1 is tightened using the tightening tool 6.

[0058] Based on the above testing system, refer to Figure 4, this embodiment also provides a method for testing the elastic flexibility of the mounting holes of the components of a threaded connection system, and the method includes:

[0059] S41: Obtain the first deformation amount of the bolt after being tightened for the first time and the first angle with the initial position;

[0060] Specifically, after the bolt is tightened for the first time, the connection, position, and functional relationship of each component of the test system are: Refer to Figure 3 and Figure 5 , the bolt is matched with the nut, the actual assembly part is arranged between the bolt and the nut, the ultrasonic patch is arranged at the end of the bolt, the ultrasonic deformation measuring device is in contact connection with the ultrasonic patch, and the angle sensor is used to measure the rotation angle of the bolt.

[0061] Specifically, in step S14, the first deformation amount is obtained by measuring with the ultrasonic patch and the ultrasonic deformation measuring device, specifically: the length of the bolt detected by ultrasonic waves represents its deformation amount. The first angle is obtained by measuring with the angle sensor. Specifically, the axial depth of the mounting hole of the force sensor device is the same as the axial depth of the mounting hole diameter of the component to be measured. The ultrasonic patch is pasted on the end plane of the bolt head, and the angle sensor is arranged below the nut.

[0062] S42: Determine the first clamping force according to the corresponding function between the clamping force and the deformation amount;

[0063] S43: Obtain the second deformation amount of the bolt after being tightened for the second time and the second angle with the initial position;

[0064] Specifically, the same as after the bolt is tightened for the first time, after the bolt is tightened for the second time, the connection, position, and functional relationship of each component of the test system are: Refer to Figure 3 and Figure 5 , the bolt is matched with the nut, the actual assembly part is arranged between the bolt and the nut, the ultrasonic patch is arranged at the end of the bolt, the ultrasonic deformation measuring device is in contact connection with the ultrasonic patch, and the angle sensor is used to measure the rotation angle of the bolt.

[0065] S44: Determine the second clamping force according to the corresponding function between the clamping force and the deformation amount;

[0066] S45: Determine the difference in clamping force of the bolt after being tightened twice adjacent to each other according to the first clamping force and the second clamping force;

[0067] Specifically, the difference in clamping force is the difference in clamping force ΔF between the first clamping force and the second clamping force.

[0068] S46: Determine the difference in deformation of the bolt after being tightened twice adjacent to each other according to the first deformation amount and the second deformation amount;

[0069] Specifically, referring to Figure 5 , the difference in deformation is the difference in deformation Δl between the first deformation amount and the second deformation amount b , Δl b is the deformation amount generated during the second tightening of the bolt.

[0070] S47: Determine the difference in angle of the bolt after being tightened twice adjacent to each other according to the first angle and the second angle;

[0071] Specifically, the difference in angle is the difference in angle Δθ between the first angle and the second angle;

[0072] S48: Determine the elastic flexibility δ of the mounting hole of the component of the threaded connection system according to the difference in clamping force, the difference in deformation amount, the difference in angle, and the pitch of the bolt, in accordance with the elastic flexibility calculation strategy p .

[0073] Specifically, use the following formula (1) for the elastic flexibility calculation strategy to solve for δ p , where P is the pitch of the bolt.

[0074]

[0075] Generally speaking, this test method uses the actual assembled parts in the threaded connection system for testing. By tightening twice, the difference in clamping force ΔF, the difference in deformation amount Δl b and the difference in angle Δθ are measured, and then the elastic flexibility δ of the mounting hole of the component of the threaded connection system is determined p , so as to realize measuring the elastic flexibility of the mounting hole of the component in the threaded connection system when the deformation of the component is very small and the structure is not damaged.

[0076] In some embodiments, the process of determining the corresponding function between the clamping force and the deformation amount is as follows:

[0077] Referring to Figure 2 , use the force sensor device to obtain the deformation amount of the bolt after being tightened multiple times. At the same time, use the ultrasonic deformation measurement device and the ultrasonic patch to obtain the clamping force of the bolt after being tightened multiple times, and obtain multiple sets of data of the deformation amount and the clamping force, where the deformation amount and the clamping force are in a one-to-one correspondence;

[0078] Determine the corresponding function between the clamping force and the deformation amount according to multiple sets of data of the deformation amount and the clamping force.

[0079] Specifically, referring toFigure 2 When obtaining the relationship of the corresponding function between the clamping force and the deformation amount, the bolt is mated with the nut, the force sensor device is arranged between the bolt and the nut, the ultrasonic patch is arranged at the end of the bolt, the ultrasonic deformation measuring device is in contact connection with the ultrasonic patch, and the angle sensor is used to measure the rotation angle of the bolt.

[0080] As Figure 6 shown, an elastic flexibility testing device for a component mounting hole of a threaded connection system according to an embodiment of the present invention further includes:

[0081] A first obtaining module 61, configured to obtain a first deformation amount after the bolt is tightened for the first time and a first angle with respect to the initial position;

[0082] A first determining module 62, configured to determine a first clamping force according to the corresponding function between the clamping force and the deformation amount

[0083] A second obtaining module 63, configured to obtain a second deformation amount after the bolt is tightened for the second time and a second angle with respect to the initial position;

[0084] A second determining module 64, configured to determine a second clamping force according to the corresponding function between the clamping force and the deformation amount;

[0085] A third determining module 65, configured to determine a clamping force difference after the bolt is tightened twice adjacent to each other according to the first clamping force and the second clamping force;

[0086] A fourth determining module 66, configured to determine a deformation amount difference after the bolt is tightened twice adjacent to each other according to the first deformation amount and the second deformation amount;

[0087] A fifth determining module 67, configured to determine an angle difference after the bolt is tightened twice adjacent to each other according to the first angle and the second angle;

[0088] A sixth determining module 68, configured to determine the elastic flexibility of the component mounting hole of the threaded connection system according to the clamping force difference, the deformation amount difference, the angle difference and the pitch of the bolt according to an elastic flexibility calculation strategy.

[0089] It should be noted here that: the above description of the device items is similar to the description of the above method items, and the beneficial effects of the method are not described in detail. For the technical details not disclosed in the device embodiment of the present invention, please refer to the description of the method embodiment of the present invention.

[0090] The present invention further provides a specific embodiment for further understanding.

[0091] At present, there are many methods for measuring the elastic compliance of traditional fasteners, such as measuring through a stretching device. Since the deformation amount of the installation holes of components in a threaded connection system is very small, it is difficult to measure its elastic compliance by general methods without damaging the structure.

[0092] Based on this, taking a specific test method for the elastic compliance of the installation holes of components in a threaded connection system as an example.

[0093] Reference Figure 1-3 and Figure 5 , a specific test method for the elastic compliance of the installation holes of components in a threaded connection system, the method includes the following steps:

[0094] Step 1: Process the head and tail of the bolt in the threaded connection system into planes, and paste ultrasonic patches on any one of the head or tail planes.

[0095] Step 2: Assemble the bolt processed in Step 1 on the force sensor device and connect it with the nut. Use a tightening tool to tighten it, and the force sensor device measures the clamping force generated by the elastic deformation of the bolt. At the same time, the ultrasonic sensor device measures the deformation amount generated by the bolt to obtain the corresponding relationship between the bolt clamping force and the deformation amount.

[0096] Step 3: Assemble the components, connect the bolt whose clamping force and deformation amount have been measured in Step 3 with the nut through the installation hole, and use a tightening tool to tighten it to a certain angle. The angle sensor measures the angle difference of the bolt rotation during the tightening process, and at the same time, the ultrasonic sensor device measures the deformation amount of the bolt during the tightening process.

[0097] Step 4: Through the measurement in Step 3, the bolt rotation angle and the bolt deformation amount can be obtained. Through the measurement in Step 2, the clamping force difference generated by the deformation amount of the bolt in Step 3 can be obtained. The elastic compliance of the installation holes of components in the threaded connection system can be calculated by the following formula:

[0098]

[0099] Where:

[0100] δ p is the elastic compliance of the installation holes of components in the threaded connection system;

[0101] Δθ is the rotation angle;

[0102] P is the pitch of the bolt;

[0103] Δl b is the deformation amount of the bolt measured by the ultrasonic sensor device during the tightening process;

[0104] ΔF is the difference in the clamping force generated by the deformation of the bolt after rotating by an angle of Δθ.

[0105] Further, the machining planes at the head and tail of the bolt in step 1 are two parallel planes, the surface roughness Ra is not greater than 20 μm, the ultrasonic patch is pasted at the center of the plane, and it is firm and not easy to fall off.

[0106] Further, during the tightening process of the tightening tool in steps 2 and 3, it can be controlled according to the angle, rotation speed, and torque.

[0107] Further, the range of the force sensor device in step 2 exceeds the guaranteed load of the bolt, and the axial depth of the installation hole of the force sensor device is the same as the axial depth of the installation hole diameter of the component to be measured. The force sensor device records the clamping force generated by the bolt changing with time during the tightening process. At the same time, the ultrasonic sensor device emits and receives ultrasonic waves on the ultrasonic patch to measure the deformation of the bolt, and obtains the relationship between the clamping force and the deformation of the bolt.

[0108] Further, in step 3, the components are assembled according to the actual assembly process. After the tightening tool tightens the components, it is ensured that the contact surfaces of the components are completely fitted. After rotating a certain angle, the angle difference is measured using an angle sensor, and at the same time, the ultrasonic sensor device measures the deformation of the bolt during the tightening process.

[0109] As Figure 7 shown, an embodiment of the present invention also provides a computer device, including a processor 71 and a memory 72 for storing a computer program that can run on the processor. When the processor is used to run the computer program, it implements the method applied to the above.

[0110] In some embodiments, the memory 72 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink dynamic random access memory (SLDRAM), and direct rambus random access memory (DRRAM). The memory 72 of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0111] The processor 71 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in the processor 71 or the instructions in the form of software. The above-mentioned processor 71 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present invention can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of the hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. This storage medium is located in the memory 72, and the processor 71 reads the information in the memory 72 and combines its hardware to complete such as Figure 4 the steps of the described test method.

[0112] In some embodiments, these embodiments described herein can be implemented using hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in this application, or a combination thereof.

[0113] For software implementation, the technologies described herein can be implemented by executing modules (such as procedures, functions, etc.) that perform the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented inside or outside the processor.

[0114] Another embodiment of the present invention provides a computer storage medium. The computer-readable storage medium stores an executable program, and when the executable program is executed by a processor 71, the steps applied to the method can be implemented. For example, as Figure 4 one or more of the test methods described above.

[0115] In some embodiments, the computer storage medium may include: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs.

[0116] It should be noted that the technical solutions described in the embodiments of the present invention can be arbitrarily combined without conflict.

[0117] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for testing the elastic flexibility of the mounting holes of the components of a threaded connection system, characterized in that, The method includes: Obtaining a first deformation amount of the bolt after the first tightening and a first angle with respect to the initial position; Determining a first clamping force according to the corresponding function between the clamping force and the deformation amount; Obtaining a second deformation amount of the bolt after the second tightening and a second angle with respect to the initial position; Determining a second clamping force according to the corresponding function between the clamping force and the deformation amount; Determining the difference in clamping force of the bolt after two adjacent tightenings according to the first clamping force and the second clamping force; Determining the difference in deformation amount of the bolt after two adjacent tightenings according to the first deformation amount and the second deformation amount; Determining the difference in angle of the bolt after two adjacent tightenings according to the first angle and the second angle; Determining the elastic flexibility of the component mounting hole of the threaded connection system according to the clamping force difference, the deformation amount difference, the angle difference, and the pitch of the bolt according to the elastic flexibility calculation strategy; Among them, the elastic flexibility calculation strategy specifically includes: solving using the following formula , where P is the pitch of the bolt thread; ； In the formula, is the elastic flexibility of the component mounting hole; is the difference in the clamping force measured by two tightenings; is the difference in the deformation measured by two tightenings; is the difference in the angle measured by two tightenings.

2. The test method according to claim 1, wherein The pitch of the bolt is data that is pre-built-in or temporarily input.

3. The test method according to claim 1, characterized in that The determining the first clamping force according to the corresponding function between the clamping force and the deformation amount includes: Obtaining the deformation amount of the bolt after being tightened multiple times, and at the same time, obtaining the clamping force of the bolt after being tightened multiple times, to obtain multiple sets of data of the deformation amount and the clamping force, where the deformation amount and the clamping force are in a one-to-one correspondence; Determining the corresponding function between the clamping force and the deformation amount according to the multiple sets of data of the deformation amount and the clamping force; Determining the first clamping force according to the corresponding function between the clamping force and the deformation amount.

4. An elastic flexibility testing device for a component mounting hole of a threaded connection system, including: A first obtaining module for obtaining a first deformation amount of the bolt after the first tightening and a first angle with respect to the initial position; A first determining module for determining a first clamping force according to the corresponding function between the clamping force and the deformation amount A second obtaining module for obtaining a second deformation amount of the bolt after the second tightening and a second angle with respect to the initial position; A second determining module for determining a second clamping force according to the corresponding function between the clamping force and the deformation amount; A third determining module for determining the difference in clamping force of the bolt after two adjacent tightenings according to the first clamping force and the second clamping force; A fourth determining module for determining the difference in deformation amount of the bolt after two adjacent tightenings according to the first deformation amount and the second deformation amount; A fifth determining module for determining the difference in angle of the bolt after two adjacent tightenings according to the first angle and the second angle; A sixth determining module for determining the elastic flexibility of the component mounting hole of the threaded connection system according to the clamping force difference, the deformation amount difference, the angle difference, and the pitch of the bolt according to the elastic flexibility calculation strategy; Among them, the elastic flexibility calculation strategy specifically includes: solving using the following formula , where P is the pitch of the bolt; ； Wherein, is the elastic flexibility of the component mounting hole; is the difference in the clamping force measured by two tightenings; is the difference in the deformation measured by two tightenings; is the difference in the angle measured by two tightenings.

5. An elastic compliance test system for the component mounting holes of a threaded connection system, the test system being applied to the test method according to any one of claims 1-3, characterized in that, The testing system includes an ultrasonic deformation measuring device, an ultrasonic patch, a force sensor device, a nut, a bolt, an angle sensor, and an actual assembled part; When obtaining the corresponding function relationship between the clamping force and the deformation amount, the bolt is engaged with the nut, the force sensor device is arranged between the bolt and the nut, the ultrasonic patch is arranged at the end of the bolt, the ultrasonic deformation measuring device is in contact connection with the ultrasonic patch, and the angle sensor is used to measure the rotation angle of the bolt; When the bolt is tightened for the second time, the bolt is engaged with the nut, the actual assembly part is arranged between the bolt and the nut, the ultrasonic patch is arranged at the end of the bolt, the ultrasonic deformation measuring device is in contact connection with the ultrasonic patch, and the angle sensor is used to measure the rotation angle of the bolt.

6. The test system according to claim 5, wherein The two ends of the head and the tail of the bolt are two parallel planes.

7. The test system according to claim 6, characterized in that, The ultrasonic patch is one piece and is pasted at the plane center of any end of the bolt.

8. The test system according to claim 5, wherein The axial depth of the installation hole of the force sensor device is the same as the axial depth of the installation hole diameter of the component to be measured.

9. A computer device, characterized in that, Comprising: A processor and a memory for storing a computer program that can run on the processor, wherein when the processor is used to run the computer program, the testing method according to any one of claims 1 to 3 is implemented.

10. A computer storage medium, characterized in that, A stored executable program, when the executable program is executed by the processor, the testing method according to any one of claims 1 to 3 is implemented.

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