Bolt tightening mistake proofing method, device and equipment and storage medium

Abstract

The invention discloses a bolt tightening mistake proofing method, device and equipment and a storage medium, and relates to the technical field of automobile manufacturing, and the bolt tightening mistake proofing method comprises the steps that equipment information is acquired; determining a target tightening torque and a target rotating angle of each to-be-tightened bolt based on the equipment information; determining a first monitoring stage angle monitoring range, a first monitoring stage torque monitoring range, a second monitoring stage angle monitoring range and a second monitoring stage torque monitoring range based on the target tightening torque and the target rotation angle; a tightening process is started, and the tightening torque and the bolt rotating angle of each bolt to be tightened are obtained; and according to the first monitoring stage angle monitoring range, the first monitoring stage torque monitoring range, the second monitoring stage angle monitoring range, the second monitoring stage torque monitoring range, the tightening torque of each to-be-tightened bolt and the bolt rotation angle, a tightening result is determined. Various missed screwing and wrong screwing can be effectively intercepted in real time, and it is guaranteed that faults do not flow out of an operation station.

Description

Technical Field

[0001] The present application relates to the field of automobile manufacturing technology, and in particular to an error-proof method, device, equipment and storage medium for bolt tightening. Background Art

[0002] In automobile manufacturing, bolt tightening is an essential part of the assembly process. The grade of bolts is determined by the importance level of the parts and the failure mode. Class A bolts (safety regulations, life safety) must be tightened with servo tools, and data collection and monitoring are performed. However, in actual production, there are still frequent cases of wrong or missed bolt tightening, which will cause major safety hazards after the vehicles enter the market, and serious ones will involve vehicle recalls.

[0003] The bolt tightening procedure is set in the servo tool controller. The rotation angle of the bolt from the initial torque to the final tightening torque of the hard connection and the neutral connection is not too large. The rotation angle of the soft connection depends on the hardness of the installed workpiece. The hardness fluctuation will cause a large deviation in the angle monitoring after tightening. If the tightening is qualified and tightened again, the system may not intercept and alarm, which will lead to repeated tightening and missed tightening.

[0004] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present application is to provide a method, device, equipment and storage medium for preventing errors in bolt tightening, aiming to solve the technical problems of incorrect or missed tightening of bolts in the assembly process.

[0006] To achieve the above objectives, the present application proposes a method for preventing errors in bolt tightening, and the method for preventing errors in bolt tightening includes:

[0007] Get device information;

[0008] Determine a target tightening torque and a target rotation angle for each bolt to be tightened based on the equipment information;

[0009] Determine the first monitoring stage angle monitoring range, the first monitoring stage torque monitoring range, the second monitoring stage angle monitoring range, and the second monitoring stage torque monitoring range based on the target tightening torque and the target rotation angle;

[0010] Starting the tightening process to obtain the tightening torque and the bolt rotation angle of each bolt to be tightened;

[0011] The tightening result is determined according to the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, the torque monitoring range of the second monitoring stage, and the tightening torque and bolt rotation angle of each bolt to be tightened.

[0012] In one embodiment, the step of obtaining the tightening torque and the bolt rotation angle of each bolt to be tightened includes:

[0013] Determine a target tightening torque and a target rotation angle for each bolt to be tightened based on the equipment information;

[0014] Determining the tightening torque and the bolt rotation angle of each to-be-tightened bolt according to the target tightening torque and the target rotation angle includes: a first tightening torque, a first bolt rotation angle, a second tightening torque, and a second bolt rotation angle.

[0015] In one embodiment, the step of determining the tightening result according to the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, the torque monitoring range of the second monitoring stage, and the tightening torque and the bolt rotation angle of each bolt to be tightened includes:

[0016] When the first tightening torque of the bolt to be tightened meets the torque monitoring range of the first monitoring stage, the second tightening torque meets the torque monitoring range of the second monitoring stage, the rotation angle of the first bolt meets the preset angle monitoring range of the first monitoring stage, and the rotation angle of the second bolt meets the angle monitoring range of the second monitoring stage, the tightening result is determined to be qualified, and the tightening point number of the device to be tightened is recorded plus 1.

[0017] In one embodiment, the step of determining the tightening result according to the tightening torque and the bolt rotation angle further includes:

[0018] When the first tightening torque of the bolt to be tightened satisfies the torque monitoring range of the first monitoring stage, the second tightening torque satisfies the torque monitoring range of the second monitoring stage, the rotation angle of the first bolt does not satisfy the preset angle monitoring range of the first monitoring stage, and the rotation angle of the second bolt does not satisfy the angle monitoring range of the second monitoring stage, or the rotation angle of the first bolt satisfies the preset angle monitoring range of the first monitoring stage, and the rotation angle of the second bolt does not satisfy the angle monitoring range of the second monitoring stage, it is determined that the tightening of the bolt to be tightened has failed;

[0019] Reverse the tightening tool, loosen the bolt to be tightened, and then re-execute the tightening process.

[0020] In one embodiment, the step of determining the tightening result according to the tightening torque and the bolt rotation angle further includes:

[0021] When the first tightening torque of the bolt to be tightened does not satisfy the torque monitoring range of the first monitoring stage and / or the second tightening torque does not satisfy the torque monitoring range of the second monitoring stage, and the rotation angle of the first bolt does not satisfy the preset angle monitoring range of the first monitoring stage, and the rotation angle of the second bolt satisfies the angle monitoring range of the second monitoring stage, it is determined that the bolt to be tightened is repeatedly tightened;

[0022] Reverse the tightening tool, loosen the bolt to be tightened, and then re-execute the tightening process.

[0023] In one embodiment, the step of starting the tightening process includes:

[0024] Determine a tightening order of each bolt to be tightened based on the equipment information;

[0025] A tightening process is performed on the bolts to be tightened according to the tightening sequence.

[0026] In one embodiment, after the step of performing the tightening process on the target bolt to be tightened according to the tightening sequence, the method further includes:

[0027] When it is detected that the target bolt to be tightened has not been tightened in the tightening sequence, the tightening process is intercepted by a tightening program.

[0028] In addition, to achieve the above purpose, the present application also proposes a bolt tightening error prevention device, the device comprising:

[0029] An information acquisition module, used to acquire device information; and determine a target tightening torque and a target rotation angle for each bolt to be tightened based on the device information;

[0030] A monitoring module, configured to determine a first monitoring stage angle monitoring range, a first monitoring stage torque monitoring range, a second monitoring stage angle monitoring range, and a second monitoring stage torque monitoring range based on the target tightening torque and the target rotation angle;

[0031] A tightening module, used to start the tightening process and obtain the tightening torque and bolt rotation angle of each bolt to be tightened;

[0032] A judgment module is used to determine the tightening result according to the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, the torque monitoring range of the second monitoring stage, and the tightening torque and bolt rotation angle of each bolt to be tightened.

[0033] In addition, to achieve the above-mentioned purpose, the present application also proposes a bolt tightening error-proofing device, which includes: a memory, a processor, and a computer program stored on the memory and executable on the processor, and the computer program is configured to implement the steps of the bolt tightening error-proofing method as described above.

[0034] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the error-proofing method for bolt tightening as described above are implemented.

[0035] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the error-proofing method for bolt tightening as described above are implemented.

[0036] One or more technical solutions proposed in this application have at least the following technical effects:

[0037] Obtain equipment information; determine the target tightening torque and target rotation angle of each bolt to be tightened based on the equipment information; determine the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, and the torque monitoring range of the second monitoring stage based on the target tightening torque and the target rotation angle; start the tightening process to obtain the tightening torque and the bolt rotation angle of each bolt to be tightened; determine the tightening result based on the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, the torque monitoring range of the second monitoring stage, and the tightening torque and bolt rotation angle of each bolt to be tightened, which can effectively intercept various missed tightening and wrong tightening in real time and ensure that the fault does not flow out of the operating station. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0039] 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 or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0040] Figure 1 A flow chart of a first embodiment of the error-proof method for tightening bolts of the present application;

[0041] Figure 2Structural diagram of the first embodiment of the bolt tightening error prevention method provided in the present application

[0042] Figure 3 A flow chart of a second embodiment of the error-proofing method for tightening bolts of the present application;

[0043] Figure 4 A flow chart of the third embodiment of the error-proof method for tightening bolts of the present application;

[0044] Figure 5 This is a schematic diagram of the module structure of the error-proofing device for tightening bolts according to an embodiment of the present application;

[0045] Figure 6 Schematic diagram of the equipment structure of the hardware operating environment involved in the error-proofing method for bolt tightening in the embodiment of the present application.

[0046] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0048] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0049] It should be noted that when the servo tool fails in tightening, the employee needs to perform repair work. During this operation, the employee needs to switch the tool to reverse mode so that the tool can be reversed for repair, or the servo tool will lock after tightening NG, and the team leader can be called to unlock it for repair. Currently, the tool will not lock after the tooling fails in tightening, and the employee can continue to operate. If the tightening equipment is old, the system will not retain the repair data when the employee loosens it. This will lead to another problem. If the employee does not find that the repair is not necessary after tightening NG, he will continue to tighten the bolts. After the last bolt is tightened, the employee will find that the servo tool is not locked and can continue to rotate. If the employee loosens a qualified tightening point and tightens it again, the angle monitoring room will not be able to intercept it.

[0050] The existing technology has the following disadvantages: multiple bolts are assembled at the same workstation, and the torque method is used to set the angle monitoring status. An electric tool is used to repeatedly tighten the same bolt. Different connection methods present completely different results. The hard connection and neutral connection programs can directly intercept the alarm, and the PLC does not count; but in the case of soft connection, the angle and torque may be qualified, and the PLC count will determine that it is qualified, resulting in the remaining bolts not being tightened, resulting in misjudgment, and failing to prevent the bolts from being tightened.

[0051] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a bolt tightening error proofing device, etc. The following takes the bolt tightening error proofing device as an example to illustrate this embodiment and the following embodiments.

[0052] Based on this, the embodiment of the present application provides a method for preventing errors in tightening bolts, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the error-proofing device method for bolt tightening of the present application.

[0053] In this embodiment, the error-proofing method for tightening bolts includes steps S10 to S20:

[0054] Step S10, obtaining device information;

[0055] It should be noted that the equipment refers to equipment that needs to be bolted, such as brake pipes, ESP assembly oil pipes and other equipment.

[0056] The equipment information includes data such as the number of bolts to be tightened of the equipment that needs to be tightened, the tightening point torque of each bolt to be tightened, and the final rotation angle of each bolt to be tightened.

[0057] Step S20, determining a target tightening torque and a target rotation angle of each bolt to be tightened based on the equipment information;

[0058] It should be noted that the target tightening torque is the final torque value determined based on the specifications of the bolt and the requirements of the connected parts. Torque is the moment required to rotate an object, and the unit is Newton meter (Nm). The target rotation angle is the angle that the bolt needs to rotate from the beginning of tightening to reach the target torque. This angle is crucial to ensure that the bolt is tightened correctly.

[0059] Step S30, determining the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, and the torque monitoring range of the second monitoring stage based on the target tightening torque and the target rotation angle;

[0060] It should be noted that the angle monitoring range of the first monitoring stage is the angle monitoring range of the tightening program in the initial stage, the torque monitoring range of the first monitoring stage is the torque monitoring range of the tightening program in the initial stage, the angle monitoring range of the second monitoring stage is the angle monitoring range of the tightening program in the final tightening stage, and the torque monitoring range of the second monitoring stage is the torque monitoring range of the tightening program in the final tightening stage. This staged monitoring method helps to capture possible problems and can control the entire tightening process more accurately.

[0061] It should be understood that the tightening program sets angle monitoring in the initial stage and angle monitoring in the final tightening stage. The corresponding torque of the initial stage angle monitoring is consistently set to less than 30% of the tightening torque, and the corresponding torque of the final tightening angle monitoring is generally set to more than 50% of the tightening torque. For example: the workpiece is tightened to 50N.m, the initial angle monitoring torque is set to 0~15N.m, the angle monitoring is xx°~xxx° (calculated according to the actual statistical normal distribution), the final tightening angle monitoring torque is set to 30N.m~50N.m, the angle of bolt rotation, and the angle monitoring is xx°~xxx° (calculated according to the actual statistical normal distribution).

[0062] In the specific implementation, it is assumed that the processing object is to tighten the brake pipe ESP assembly oil pipe, the torque of the 5 tightening points is 16N.m, but the final rotation angle is different. If the angle monitoring settings are the same, there is a risk of slipping. Two different tightening programs are set for the 5 tightening points. The first 1-2-3 point program sets the torque from 2.5 to 6.5Nm, the rotation angle range should be 5 to 200°, the final tightening torque is from 7 to 16Nm, and the rotation angle is 10° to 70°. The torque of the last 4-5 points is from 2.5 to 6.5Nm, the rotation angle range should be 5 to 200°, the final tightening torque is from 7 to 16NM, and the rotation angle is 80° to 175°.

[0063] Step S40, starting the tightening process, obtaining the tightening torque and the bolt rotation angle of each bolt to be tightened;

[0064] It should be noted that before starting the tightening process, the equipment should be calibrated to ensure that the readings of the tightening tool are accurate.

[0065] It should be understood that if the servo tool detects that an employee is tightening the same point twice, the servo tool will sound an alarm;

[0066] If a missing bolt is detected, the line will be stopped to find the missing bolt. The program is tightened to prevent new employees from making mistakes or missing bolts.

[0067] Step S50, determining the tightening result according to the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, the torque monitoring range of the second monitoring stage, and the tightening torque and bolt rotation angle of each bolt to be tightened.

[0068] It should be noted that when evaluating the tightening results, check whether the torque and angle are within the monitoring range. After the tightening process is completed, record all tightening data, including torque, angle, time, etc., to facilitate subsequent data analysis and quality control. Any abnormal conditions during the tightening process should also be recorded, such as tool failure, operating errors, etc.

[0069] It should be understood that as long as the tool does not loosen and need repair after tightening NG, the servo tool will directly alarm to intercept.

[0070] In a feasible implementation, step S50 may include step A11:

[0071] Step A11: When the first tightening torque of the bolt to be tightened meets the torque monitoring range of the first monitoring stage, the second tightening torque meets the torque monitoring range of the second monitoring stage, the rotation angle of the first bolt meets the preset angle monitoring range of the first monitoring stage, and the rotation angle of the second bolt meets the angle monitoring range of the second monitoring stage, the tightening result is determined to be qualified, and the tightening point number of the equipment to be tightened is recorded plus 1.

[0072] In a specific implementation, when the initial stage torque, final tightening stage torque, initial stage rotation angle, and final tightening stage rotation angle are all within a preset range, the tightening is determined to be qualified, and valid data is recorded at this time, and the tightening point is recorded plus 1.

[0073] In a feasible implementation, step S420 may include steps A21 to A22:

[0074] Step A21: when the first tightening torque of the bolt to be tightened satisfies the torque monitoring range of the first monitoring stage, the second tightening torque satisfies the torque monitoring range of the second monitoring stage, the rotation angle of the first bolt does not satisfy the preset first monitoring stage angle monitoring range and the second bolt rotation angle does not satisfy the second monitoring stage angle monitoring range, or the rotation angle of the first bolt satisfies the preset first monitoring stage angle monitoring range and the second bolt rotation angle does not satisfy the second monitoring stage angle monitoring range, it is determined that the tightening of the bolt to be tightened fails;

[0075] Step A22: Reverse the tightening tool and re-execute the tightening process after loosening the bolt to be tightened.

[0076] In a specific implementation, when the torque in the initial stage meets the torque monitoring range of the first monitoring stage, the torque in the final tightening stage meets the torque monitoring range of the second monitoring stage, and the rotation angle of the bolt in the initial stage meets the angle monitoring range of the first monitoring stage, but the rotation angle of the bolt in the final tightening stage does not meet the angle monitoring range of the second monitoring stage, tightening NG is determined, and the tightening tool needs to be reversed to re-perform the tightening process;

[0077] Or when the torque in the initial stage meets the torque monitoring range of the first monitoring stage, the torque in the final tightening stage meets the torque monitoring range of the second monitoring stage, the angle of the bolt in the initial stage meets the angle monitoring range of the first monitoring stage but the angle of the bolt in the final tightening stage does not meet the angle monitoring range of the second monitoring stage, it is determined that tightening is NG, and the tightening tool needs to be reversed and the tightening process needs to be repeated.

[0078] In a feasible implementation, step S420 may include steps A31 to A32:

[0079] Step A31: when the first tightening torque of the bolt to be tightened does not satisfy the torque monitoring range of the first monitoring stage and / or the second tightening torque does not satisfy the torque monitoring range of the second monitoring stage and the rotation angle of the first bolt does not satisfy the preset angle monitoring range of the first monitoring stage and the rotation angle of the second bolt satisfies the angle monitoring range of the second monitoring stage, it is determined that the bolt to be tightened is to be tightened repeatedly;

[0080] Step A32: Reverse the tightening tool and re-execute the tightening process after loosening the bolt to be tightened.

[0081] In the specific implementation, when the torque in the initial stage does not meet the torque monitoring range of the first monitoring stage, the torque in the final tightening stage meets the torque monitoring range of the second monitoring stage, the angle of the bolt in the initial stage does not meet the angle monitoring range of the first monitoring stage but the angle of the bolt in the final tightening stage meets the angle monitoring range of the second monitoring stage, it is determined that the bolt to be tightened needs to be tightened repeatedly. At this time, the data is invalid data and the tightening tool needs to be reversed to repeat the tightening process.

[0082] like Figure 2 As shown, the complete process of this scheme is to turn off the anti-loosening function of the qualified tightening tool, then set the tightening program, and formulate a two-stage monitoring program, including torque monitoring and angle monitoring in the initial stage, torque monitoring and angle monitoring in the final tightening stage, and then start the tightening process. At this time, the tightening torque and bolt rotation angle of each stage are recorded to obtain the tightening result. When the torque and the initial stage rotation angle of the bolt are not satisfied and the final tightening stage rotation angle is within the specified range, it is judged that the tightening is repeated and invalid data. At this time, the tool can be reversed and the tightening process is repeated for the unqualified bolt. When the torque is satisfied and the initial angle monitoring is satisfied, the final tightening angle monitoring is not satisfied, or the torque is satisfied and the initial angle monitoring and the final tightening angle monitoring are satisfied, it is judged that the tightening is NG, that is, the tightening fails. At this time, the tool can be reversed and the tightening process is repeated for the unqualified bolt. When the torque and the initial stage rotation angle of the bolt and the final tightening stage rotation angle are within the specified range, the tightening is judged to be qualified and recorded as valid data, and the tightening point is increased by 1. At this time, the tool cannot be reversed. If it is detected that the tool is reversed, an alarm is issued.

[0083] This embodiment provides a method for preventing errors in bolt tightening, which includes obtaining equipment information; determining the target tightening torque and target rotation angle of each bolt to be tightened based on the equipment information; determining the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, and the torque monitoring range of the second monitoring stage based on the target tightening torque and the target rotation angle; starting the tightening process, obtaining the tightening torque and the bolt rotation angle of each bolt to be tightened; determining the tightening result based on the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, the torque monitoring range of the second monitoring stage, and the tightening torque and the bolt rotation angle of each bolt to be tightened, so as to solve the problem of wrong tightening and missed tightening caused by the difference in angle monitoring when tightening materials of different hardness. Various missed tightening and wrong tightening can be effectively intercepted in real time and ensure that the fault does not flow out of the operating station.

[0084] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 3 , step S40, including steps S401 to S402:

[0085] Step S401, determining the tightening order of each bolt to be tightened based on the equipment information;

[0086] It should be understood that the tightening sequence of each bolt to be tightened is determined to ensure the integrity and stability of the structure. In some cases, the tightening sequence of the bolts is critical to avoid deformation or damage to the components.

[0087] Step S402, executing a tightening process for the bolts to be tightened according to the tightening sequence.

[0088] In a specific implementation, for example, the normal tightening sequence is 1-2-3-4-5. If the employee does not perform the operation in the sequence, such as tightening according to 4-5-3-2-1, the angle monitoring program can directly intercept it.

[0089] In a feasible implementation, step S402 may include step A41:

[0090] Step A41: When it is detected that the target bolt to be tightened does not execute the tightening process according to the tightening sequence, the tightening process is intercepted by the tightening program.

[0091] In specific implementation, the intelligent tightening monitoring system can monitor the status of the tightening equipment in real time. Once a tightening sequence error or equipment failure is detected, the system can immediately respond and display the fault information, thereby quickly locating and solving the problem. This real-time monitoring capability greatly improves production efficiency and the stability of tightening quality.

[0092] This embodiment provides a method for preventing errors in bolt tightening. By precisely controlling tightening parameters, optimizing the tightening sequence, continuously monitoring the tightening process, recording tightening data and other measures, the stability and safety of the structure, production efficiency, consistency of tightening quality, reliability and durability of the product can be significantly improved, while reducing material waste and costs and improving the convenience and flexibility of operation.

[0093] Based on the first and second embodiments of the present application, in the third embodiment of the present application, the same or similar contents as those in the above embodiments can be referred to the above introduction, and will not be described in detail later. Figure 4 , step S40, further comprising steps S410 to S420:

[0094] Step S410, determining a target tightening torque and a target rotation angle of each bolt to be tightened based on the equipment information;

[0095] It should be noted that the target tightening torque and target rotation angle required for each bolt can be determined by analyzing the design scheme, material properties, load requirements, etc. of the equipment; considering the size, material, strength grade and thread type of the bolt; considering the material and surface treatment of the connected parts.

[0096] In the specific implementation, it can be assumed that the target tightening torque is 50Nm; the torque monitoring range of the tightening procedure in the initial stage: 0~15Nm (below 30%); the torque monitoring range of the tightening procedure in the final tightening stage: 30~50Nm (above 50%); the angle monitoring range of the tightening procedure in the initial stage is 20°~40°; the angle monitoring range of the tightening procedure in the final tightening stage is 60°~80°; among them, when the bolt begins to contact and is initially tightened, the bolt usually rotates about 20° to 40°. This range should cover the initial tightening angle changes of the bolt under most normal circumstances. For the final tightening stage, when the bolt approaches the target torque, the angle at which the bolt continues to rotate should be smaller, but a certain angle is still required to ensure that the bolt reaches the correct preload, so the monitoring angle range is smaller than the initial stage.

[0097] Step S420, determining the tightening torque and the bolt rotation angle of each bolt to be tightened according to the target tightening torque and the target rotation angle includes: a first tightening torque, a first bolt rotation angle, a second tightening torque and a second bolt rotation angle.

[0098] It should be understood that the first tightening torque is monitored in the initial tightening stage, the purpose of which is to make the bolt reach a certain pre-tightening force. The torque at this stage is usually lower to avoid over-tightening.

[0099] The first bolt rotation angle is the bolt rotation angle after the first tightening torque is reached to ensure the consistency of the preload force.

[0100] The second tightening torque is after the first tightening stage, further increasing the torque to the final target torque to meet the designed preload requirements.

[0101] The second bolt rotation angle is the final angle to which the bolt is rotated after the second tightening torque is reached, ensuring that the bolt is tightened to a precise position.

[0102] It should be noted that if the monitoring data during the tightening process exceeds the preset range, the system will automatically stop the tightening process and issue an alarm to facilitate problem diagnosis and correction.

[0103] This embodiment provides a method for preventing errors in bolt tightening, which can significantly improve the accuracy and consistency of tightening operations by accurately setting the target tightening torque and angle of each bolt and refining each stage in the tightening process (such as the first tightening torque, the first bolt rotation angle, the second tightening torque, and the second bolt rotation angle). This precise control helps ensure that each bolt is tightened to the appropriate preload, thereby improving the quality and reliability of the entire structure.

[0104] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the error-proofing method for bolt tightening of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0105] This application also provides a bolt tightening error prevention device, please refer to Figure 5 , the bolt tightening error-proofing device comprises:

[0106] The information acquisition module 10 is used to acquire device information; determine the target tightening torque and target rotation angle of each bolt to be tightened based on the device information;

[0107] A monitoring module 20, for determining a first monitoring stage angle monitoring range, a first monitoring stage torque monitoring range, a second monitoring stage angle monitoring range, and a second monitoring stage torque monitoring range based on a target tightening torque and a target rotation angle;

[0108] The tightening module 30 is used to start the tightening process and obtain the tightening torque and the bolt rotation angle of each bolt to be tightened;

[0109] The judgment module 40 is used to determine the tightening result according to the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, the torque monitoring range of the second monitoring stage, and the tightening torque and bolt rotation angle of each bolt to be tightened.

[0110] The bolt tightening error proofing device provided by the present application adopts the bolt tightening error proofing method in the above embodiment, which can solve the technical problems of wrong tightening and missing tightening of bolts in the assembly process. Compared with the prior art, the beneficial effects of the bolt tightening error proofing device provided by the present application are the same as the beneficial effects of the bolt tightening error proofing method provided by the above embodiment, and other technical features of the bolt tightening error proofing device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0111] In one embodiment, the tightening module 30 is further used to determine the target tightening torque and target rotation angle of each bolt to be tightened based on the equipment information;

[0112] Determining the tightening torque and the bolt rotation angle of each bolt to be tightened according to the target tightening torque and the target rotation angle includes: a first tightening torque, a first bolt rotation angle, a second tightening torque, and a second bolt rotation angle.

[0113] In one embodiment, the judgment module 40 is also used to determine that the tightening result is qualified when the first tightening torque of the bolt to be tightened meets the torque monitoring range of the first monitoring stage, the second tightening torque meets the torque monitoring range of the second monitoring stage, the first bolt rotation angle meets the preset first monitoring stage angle monitoring range, and the second bolt rotation angle meets the second monitoring stage angle monitoring range, and record the tightening point number of the device to be tightened plus 1.

[0114] In one embodiment, the judgment module 40 is further used to determine that the bolt to be tightened is repeatedly tightened when the first tightening torque of the bolt to be tightened satisfies the torque monitoring range of the first monitoring stage and the second tightening torque satisfies the torque monitoring range of the second monitoring stage and / or the rotation angle of the first bolt does not satisfy the preset first monitoring stage angle monitoring range and / or the rotation angle of the second bolt does not satisfy the second monitoring stage angle monitoring range;

[0115] Reverse the tightening tool and re-perform the tightening process after loosening the bolt to be tightened.

[0116] In one embodiment, the judgment module 40 is further used to determine that the tightening of the bolt to be tightened has failed when the first tightening torque of the bolt to be tightened does not satisfy the torque monitoring range of the first monitoring stage and / or the second tightening torque does not satisfy the torque monitoring range of the second monitoring stage;

[0117] Reverse the tightening tool and re-perform the tightening process after loosening the bolt to be tightened.

[0118] In one embodiment, the tightening module 30 is further used to determine the tightening order of each bolt to be tightened based on the equipment information;

[0119] Carry out the tightening process on the bolts to be tightened according to the tightening sequence.

[0120] In one embodiment, the tightening module 30 is further configured to intercept the tightening process through a tightening program when it is detected that the target bolt to be tightened has not been tightened according to the tightening sequence.

[0121] The present application provides a bolt tightening error-proofing device, the bolt tightening error-proofing device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the bolt tightening error-proofing method in the above-mentioned embodiment one.

[0122] Reference below Figure 6 , which shows a schematic diagram of the structure of a bolt tightening error-proofing device suitable for implementing the embodiment of the present application. The bolt tightening error-proofing device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 6 The error-proofing device for bolt tightening shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0123] like Figure 6As shown, the error-proofing device for bolt tightening may include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. Various programs and data required for the operation of the error-proofing device for bolt tightening are also stored in RAM1004. The processing device 1001, ROM1002, and RAM1004 are connected to each other via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the bolt tightening error-proofing device to communicate wirelessly or wired with other devices to exchange data. Although the bolt tightening error-proofing device with various systems is shown in the figure, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0124] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0125] The bolt tightening error proofing device provided by the present application adopts the bolt tightening error proofing method in the above embodiment, which can solve the technical problems of wrong tightening and missing tightening of bolts in the assembly process. Compared with the prior art, the beneficial effects of the bolt tightening error proofing device provided by the present application are the same as the beneficial effects of the bolt tightening error proofing device method provided by the above embodiment, and other technical features of the bolt tightening error proofing device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0126] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0127] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0128] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the error-proofing method for bolt tightening in the above-mentioned embodiment.

[0129] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0130] The computer-readable storage medium may be included in the error-proofing device for bolt tightening; or may exist independently without being assembled into the error-proofing device for bolt tightening.

[0131] The computer-readable storage medium carries one or more programs. When the one or more programs are executed by the error-proofing device for bolt tightening, the error-proofing device for bolt tightening: obtains device information; determines the target tightening torque and target rotation angle of each bolt to be tightened based on the device information; determines the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, and the torque monitoring range of the second monitoring stage based on the target tightening torque and the target rotation angle; starts the tightening process to obtain the tightening torque and the bolt rotation angle of each bolt to be tightened; determines the tightening result according to the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, the torque monitoring range of the second monitoring stage, and the tightening torque and the bolt rotation angle of each bolt to be tightened.

[0132] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0133] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0134] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0135] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned error-proofing method for tightening bolts, and can solve the technical problems of wrong or missed tightening of bolts in the assembly process. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the error-proofing method for tightening bolts provided by the above-mentioned embodiments, and will not be elaborated here.

[0136] The present application also provides a computer program product, including a computer program, which implements the steps of the error-proofing method for bolt tightening as described above when executed by a processor.

[0137] The computer program product provided by the present application can solve the technical problems of wrong or missed tightening of bolts in the assembly process. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the error-proofing method for tightening bolts provided by the above embodiment, which will not be elaborated here.

[0138] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A method for preventing errors in bolt tightening, characterized in that: The error-proofing method for tightening the bolts comprises: Get device information; Determine a target tightening torque and a target rotation angle for each bolt to be tightened based on the equipment information; Determine the first monitoring stage angle monitoring range, the first monitoring stage torque monitoring range, the second monitoring stage angle monitoring range, and the second monitoring stage torque monitoring range based on the target tightening torque and the target rotation angle; Starting the tightening process to obtain the tightening torque and the bolt rotation angle of each bolt to be tightened; The tightening result is determined according to the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, the torque monitoring range of the second monitoring stage, and the tightening torque and bolt rotation angle of each bolt to be tightened.

2. The bolt tightening error-proofing method according to claim 1, characterized in that: The step of obtaining the tightening torque and the bolt rotation angle of each bolt to be tightened includes: Determine a target tightening torque and a target rotation angle for each bolt to be tightened based on the equipment information; Determining the tightening torque and the bolt rotation angle of each to-be-tightened bolt according to the target tightening torque and the target rotation angle includes: a first tightening torque, a first bolt rotation angle, a second tightening torque, and a second bolt rotation angle.

3. The error-proof method for bolt tightening according to claim 1 or 2, characterized in that: The step of determining the tightening result according to the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, the torque monitoring range of the second monitoring stage, and the tightening torque and the bolt rotation angle of each bolt to be tightened comprises: When the first tightening torque of the bolt to be tightened meets the torque monitoring range of the first monitoring stage, the second tightening torque meets the torque monitoring range of the second monitoring stage, the rotation angle of the first bolt meets the preset angle monitoring range of the first monitoring stage, and the rotation angle of the second bolt meets the angle monitoring range of the second monitoring stage, the tightening result is determined to be qualified, and the tightening point number of the device to be tightened is recorded plus 1.

4. The error-proof method for bolt tightening according to claim 1, characterized in that: The step of determining the tightening result according to the tightening torque and the bolt rotation angle also includes: When the first tightening torque of the bolt to be tightened satisfies the torque monitoring range of the first monitoring stage, the second tightening torque satisfies the torque monitoring range of the second monitoring stage, the rotation angle of the first bolt does not satisfy the preset angle monitoring range of the first monitoring stage, and the rotation angle of the second bolt does not satisfy the angle monitoring range of the second monitoring stage, or the rotation angle of the first bolt satisfies the preset angle monitoring range of the first monitoring stage, and the rotation angle of the second bolt does not satisfy the angle monitoring range of the second monitoring stage, it is determined that the tightening of the bolt to be tightened has failed; Reverse the tightening tool, loosen the bolt to be tightened, and then re-execute the tightening process.

5. The error-proof method for bolt tightening according to claim 1, characterized in that: The step of determining the tightening result according to the tightening torque and the bolt rotation angle also includes: When the first tightening torque of the bolt to be tightened does not satisfy the torque monitoring range of the first monitoring stage and / or the second tightening torque does not satisfy the torque monitoring range of the second monitoring stage, and the rotation angle of the first bolt does not satisfy the preset angle monitoring range of the first monitoring stage, and the rotation angle of the second bolt satisfies the angle monitoring range of the second monitoring stage, it is determined that the bolt to be tightened is repeatedly tightened; Reverse the tightening tool, loosen the bolt to be tightened, and then re-execute the tightening process.

6. The bolt tightening error-proofing method according to claim 1, characterized in that: The step of starting the tightening process includes: Determine a tightening order of each bolt to be tightened based on the equipment information; A tightening process is performed on the bolts to be tightened according to the tightening sequence.

7. The error-proof method for bolt tightening according to claim 6, characterized in that: After the step of performing the tightening process on the target bolt to be tightened according to the tightening sequence, the method further includes: When it is detected that the target bolt to be tightened has not been tightened in the tightening sequence, the tightening process is intercepted by a tightening program.

8. A bolt tightening error proofing device, characterized in that: The device comprises: An information acquisition module, used to acquire device information; and determine a target tightening torque and a target rotation angle for each bolt to be tightened based on the device information; A monitoring module, configured to determine a first monitoring stage angle monitoring range, a first monitoring stage torque monitoring range, a second monitoring stage angle monitoring range, and a second monitoring stage torque monitoring range based on the target tightening torque and the target rotation angle; A tightening module, used to start the tightening process and obtain the tightening torque and bolt rotation angle of each bolt to be tightened; A judgment module is used to determine the tightening result according to the angle monitoring range of the first monitoring stage, the torque monitoring range of the first monitoring stage, the angle monitoring range of the second monitoring stage, the torque monitoring range of the second monitoring stage, and the tightening torque and bolt rotation angle of each bolt to be tightened.

9. A bolt tightening error-proofing device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the bolt tightening error prevention method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the bolt tightening error prevention method according to any one of claims 1 to 7 are implemented.

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