A method and system for detecting connection quality of a turning fixture of a workpiece

Abstract

The present invention discloses a method and system for detecting the connection quality of a turning fixture of a workpiece, and relates to the technical field of turning fixture detection data processing. The method comprises the following steps: installing the turning fixture; collecting the connection quality detection data of the turning fixture; obtaining the negative impact index of the connection quality stability; obtaining the positive impact index of the connection quality accuracy; obtaining the connection quality comprehensive coefficient based on the comprehensive analysis of the impact index; and adjusting the turning fixture based on the comparative analysis results. The present invention installs the turning fixture and collects the detection data, performs a first performance and a second performance evaluation analysis on the data, obtains the stability negative impact index and the precision positive impact index, obtains the connection quality comprehensive coefficient through comprehensive analysis, and adjusts it based on the comparative analysis results, thereby achieving the effect of improving the real-time detection of the connection quality of the turning fixture, and solving the problem of the real-time detection of the connection quality of the turning fixture in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of turning fixture detection data processing, and in particular to a method and system for detecting the connection quality of a turning fixture of a workpiece. Background Art

[0002] As the manufacturing industry is developing towards precision, automation and intelligence, the performance of turning fixtures, as an important part of mechanical processing, directly affects the quality of the final product. Therefore, the detection of the connection quality of turning fixtures is an important part of quality control. The existing turning fixture connection mainly obtains the connection quality through static measurement.

[0003] The existing method for detecting the connection quality of the turning fixture of the workpiece is realized by the following technologies, including: optical detection technology, which measures the relative position and shape of the fixture and the workpiece through a laser interferometer or laser scanner to evaluate the connection quality. At the same time, a high-resolution camera is used to capture images, and the relative position and gap between the fixture and the workpiece are analyzed through image processing software to provide high-precision measurement results for subsequent analysis of the turning connection quality; acoustic detection technology, which detects defects and gaps at the connection between the fixture and the workpiece by using ultrasonic flaw detection technology.

[0004] For example, a patent application with publication number: CN117030709A discloses a method for detecting weld repainting of a three-piece can, which includes the following steps: preparing a solution tank with a copper sulfate solution; positioning the three-piece can on a workpiece flip fixture; lowering the three-piece can until the weld position of the three-piece can is completely immersed in the copper sulfate solution; after soaking for the required time, lifting the workpiece flip fixture so that the three-piece can leaves the copper sulfate solution; visually inspecting and analyzing the weld position of the three-piece can to achieve the purpose of detection. The present invention has simple detection steps and is easy to operate. It can conveniently and quickly photograph the weld position of the three-piece can. By performing image analysis processing on the photographed image, the weld information can be obtained, thereby achieving accurate detection of the quality of weld repainting.

[0005] For example, the patent application with the publication number: CN118090595A discloses a device and method for detecting the welding quality of PIN needles, including: a working platform, a frame, a fixture, a detection component and a controller, wherein the fixture is used to fix the weldment to be detected; the detection component includes a detection head, a sensor and a drive device, the detection head is used to push the PIN needle, the sensor includes a force sensor and a displacement sensor, the force sensor is used to collect the force of the PIN needle, the displacement sensor is used to collect the position of the PIN needle, and the drive device is used to drive the detection component to move; the controller is connected to the detection component, and is used to receive data from the detection component and control the detection component. The detected parameter curve is compared with the set parameter curve, and the calculated PIN needle shape variable DeltaX is compared with the reference shape variable value DeltaX0 to obtain a product that meets the welding requirements.

[0006] However, in the process of implementing the technical solution of the invention in the embodiments of the present application, the present application found that the above technology has at least the following technical problems:

[0007] In the prior art, the turning fixture connection quality detection is mainly carried out through static measurement during the turning process. At the same time, an unreliable fixture connection will cause the workpiece position to shift, affecting the geometric accuracy and position accuracy of the machined surface. There is a problem with the real-time performance of the turning fixture connection quality detection. Summary of the invention

[0008] The embodiment of the present application solves the problem of real-time detection of connection quality of turning fixtures in the prior art by providing a method and system for detecting connection quality of turning fixtures of workpieces, thereby achieving the effect of improving the real-time detection of connection quality of turning fixtures.

[0009] An embodiment of the present application provides a method for detecting the connection quality of a turning fixture of a workpiece, comprising the following steps: installing the turning fixture; collecting connection quality detection data of the turning fixture; performing a first performance evaluation analysis on the connection quality detection data of the turning fixture to obtain a negative impact index of connection quality stability; performing a second performance evaluation analysis on the connection quality detection data of the turning fixture to obtain a positive impact index of connection quality accuracy; obtaining a comprehensive connection quality coefficient through a comprehensive analysis of the negative impact index of connection quality stability and the positive impact index of connection quality accuracy; comparing and analyzing the comprehensive connection quality coefficient with a preset comprehensive connection quality threshold, and adjusting the turning fixture according to the comparison and analysis results.

[0010] Furthermore, the specific process of installing the turning fixture is: connecting the turning fixture to the turning workpiece, and using a connection quality measuring device to check the connection accuracy of the turning fixture; if the positioning accuracy of the turning fixture is outside the specified tolerance range, make adjustments to reduce the error; if the positioning accuracy of the turning fixture is within the specified tolerance range, no adjustment is required.

[0011] Furthermore, the specific process of collecting the connection quality inspection data of the turning fixture is: obtaining historical fixture clamping pressure data, the historical fixture clamping pressure data includes the average fixture clamping pressure; obtaining preset fixture connection quality data, the preset fixture connection quality data includes the preset processing part target size and the preset processing part standard surface roughness.

[0012] Furthermore, the specific process of conducting the first performance evaluation analysis of the connection quality of the turning fixture connection quality detection data is as follows: the time taken by the turning fixture to clamp the turning workpiece is recorded as the fixture connection stability detection time, and the fixture connection stability detection time is divided into several fixture clamping time periods; the noise frequency parameters in the fixture clamping time period are obtained by a noise acquisition device; the vibration frequency parameters in the fixture clamping time period are obtained by a vibration acquisition device; the fixture clamping pressure parameters in the fixture clamping time period are obtained by a pressure acquisition device; data cleaning is performed on the noise frequency parameters, vibration frequency parameters and fixture clamping pressure parameters to remove obvious abnormal data and erroneous data; the connection quality stability negative influence index in several fixture clamping time periods is obtained by analysis; the connection quality stability negative influence indexes of several fixture clamping time periods within the fixture connection stability detection time are arranged in descending order, and the largest connection quality stability negative influence index is selected and recorded as the connection quality stability negative influence index.

[0013] Furthermore, the specific process of conducting the second performance evaluation analysis of the connection quality of the turning fixture connection quality detection data is as follows: obtaining the actual size of the processed part through a size measuring device; obtaining the surface roughness of the processed part through a roughness measuring device; and obtaining the positive influence index of the connection quality accuracy through this analysis.

[0014] Furthermore, the specific process of obtaining the connection quality comprehensive coefficient is: obtaining the connection quality comprehensive coefficient through comprehensive analysis of the connection quality stability negative impact index and the connection quality accuracy positive impact index.

[0015] Furthermore, the specific process of comparing and analyzing the comprehensive connection quality coefficient with the preset comprehensive connection quality threshold is as follows: if the comprehensive connection quality coefficient is not less than the preset comprehensive connection quality threshold and if the negative influence index of connection quality stability is not greater than the preset connection quality stability threshold and if the positive influence index of connection quality accuracy is not less than the preset connection quality accuracy threshold, then the connection quality of the turning fixture is judged to be up to standard, and the corresponding turning fixture is recorded as a qualified product; if the comprehensive connection quality coefficient is not less than the preset comprehensive connection quality threshold and if the negative influence index of connection quality stability is greater than the preset connection quality stability threshold or if the positive influence index of connection quality accuracy is less than the preset connection quality accuracy threshold, then the connection quality of the turning fixture is judged to be not up to standard, and the corresponding turning fixture is recorded as the first defective product.

[0016] Furthermore, the comparative analysis of the connection quality comprehensive coefficient with the preset connection quality comprehensive threshold also includes: if the connection quality comprehensive coefficient is less than the preset connection quality comprehensive threshold and if the connection quality stability negative influence index is preset to be greater than the connection quality stability threshold and if the connection quality accuracy positive influence index is less than the preset connection quality accuracy threshold, then the connection quality of the turning fixture is judged to be substandard and the corresponding turning fixture is recorded as a defective product; if the connection quality comprehensive coefficient is less than the preset connection quality comprehensive threshold and if the connection quality stability negative influence index is not greater than the preset connection quality stability threshold or if the connection quality accuracy positive influence index is not less than the preset connection quality accuracy threshold, then the connection quality of the turning fixture is judged to be substandard and the corresponding turning fixture is recorded as a second defective product.

[0017] Furthermore, the specific process of adjusting the turning fixture according to the comparative analysis results is: the turning fixture corresponding to the qualified products is not adjusted; the turning fixture corresponding to the unqualified products is scrapped; the first defective product and the second defective product are repaired, and the repair includes applying an anti-slip coating to the turning fixture and adjusting the clamping pressure of the turning fixture.

[0018] The embodiment of the present application provides a connection quality detection system for a turning fixture of a workpiece, which includes a turning fixture installation module, a connection quality data acquisition module, a first connection quality performance evaluation and analysis module, a second connection quality performance evaluation and analysis module, a connection quality comprehensive performance evaluation and analysis module and a connection quality adjustment module; the turning fixture installation module is used to install the turning fixture; the connection quality data acquisition module is used to collect the connection quality detection data of the turning fixture; the first connection quality performance evaluation and analysis module is used to perform a first connection quality performance evaluation and analysis on the connection quality detection data of the turning fixture to obtain a negative impact index of connection quality stability; the second connection quality performance evaluation and analysis module is used to perform a second connection quality performance evaluation and analysis on the connection quality detection data of the turning fixture to obtain a positive impact index of connection quality accuracy; the comprehensive connection quality performance evaluation and analysis module is used to obtain a comprehensive connection quality coefficient based on a comprehensive analysis of the negative impact index of connection quality stability and the positive impact index of connection quality accuracy; the connection quality adjustment module is used to compare and analyze the comprehensive connection quality coefficient with a preset comprehensive connection quality threshold, and adjust the turning fixture according to the comparison and analysis results.

[0019] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0020] 1. The present invention installs the turning fixture and collects test data, performs first performance and second performance evaluation analysis on the data, obtains the negative impact index of stability and the positive impact index of accuracy, and obtains the comprehensive coefficient of connection quality through comprehensive analysis. Adjustment is made according to the comparative analysis results, thereby achieving the effect of improving the real-time performance of connection quality detection of the turning fixture, and solving the problem of real-time performance of connection quality detection of the turning fixture in the prior art.

[0021] 2. By evaluating and analyzing the first and second performance of the data, a quantitative turning fixture connection quality impact index was obtained, so that the turning fixture connection quality problem can be identified and analyzed more accurately. According to the comparative analysis results, the installation and use of the turning fixture can be adjusted in time to ensure that the turning fixture connection quality is always within the standard range.

[0022] 3. By installing sensors and noise collection equipment, vibration collection equipment, and pressure collection equipment, the noise frequency parameters, vibration frequency parameters, and fixture clamping pressure parameters can be obtained, and the connection data of the turning fixture can be collected in real time. The collected data can be deeply analyzed to optimize the design of the turning fixture connection quality and improve the accuracy of the turning fixture connection quality detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A flow chart of a method for detecting the connection quality of a turning fixture of a workpiece provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of a connection quality comprehensive coefficient function provided in an embodiment of the present application;

[0025] Figure 3 A schematic structural diagram of a connection quality detection system for a turning fixture of a workpiece provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The embodiment of the present application solves the problem of real-time detection of connection quality of turning fixtures in the prior art by providing a method and system for detecting connection quality of turning fixtures of workpieces. By installing the turning fixture and collecting detection data, the effect of improving the real-time detection of connection quality of the turning fixture is achieved.

[0027] The technical solution in the embodiment of the present application is to solve the above-mentioned problem of real-time detection of connection quality of turning fixtures, and the overall idea is as follows:

[0028] By installing the turning fixture and collecting test data, the data is evaluated and analyzed for the first and second performances, and the negative impact index of stability and the positive impact index of accuracy are comprehensively analyzed to obtain the comprehensive coefficient of connection quality. Adjustments are made based on the comparative analysis results, thereby achieving the effect of improving the real-time performance of the connection quality detection of the turning fixture.

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] like Figure 1 As shown, it is a flow chart of a connection quality detection method for a turning fixture of a workpiece provided in an embodiment of the present application, the method is applied to a connection quality detection device for a turning fixture of a workpiece, and the method includes the following steps: installing the turning fixture; collecting connection quality detection data of the turning fixture; performing a first performance evaluation analysis on the connection quality detection data of the turning fixture to obtain a negative impact index of connection quality stability; performing a second performance evaluation analysis on the connection quality detection data of the turning fixture to obtain a positive impact index of connection quality accuracy; obtaining a comprehensive connection quality coefficient through a comprehensive analysis of the negative impact index of connection quality stability and the positive impact index of connection quality accuracy; comparing and analyzing the comprehensive connection quality coefficient with a preset comprehensive connection quality threshold, and adjusting the turning fixture according to the comparison and analysis results.

[0031] In this embodiment, the evaluation of the turning fixture connection quality cannot be performed by real-time measurement of the connection size error or the connection clamping accuracy under the requirement of real-time performance. Instead, other parameters during the processing process are required to reflect the relative level of the turning fixture connection quality.

[0032] Furthermore, the specific process of installing the turning fixture is: connect the turning fixture to the turning workpiece, and use the connection quality measuring equipment to check the connection accuracy of the turning fixture; if the positioning accuracy of the turning fixture is outside the specified tolerance range, adjust it to reduce the error; if the positioning accuracy of the turning fixture is within the specified tolerance range, no adjustment is required.

[0033] In this embodiment, if the positioning accuracy of the turning fixture is outside the specified tolerance range (for example, ±0.02mm), the clamping force of the turning fixture can be adjusted to ensure the stability of the workpiece during the processing, and the connection quality measurement of the turning fixture can be re-performed until the positioning accuracy of the turning fixture is within the specified tolerance range. If the positioning accuracy of the turning fixture is within the specified tolerance range, no adjustment is required.

[0034] Furthermore, the specific process of collecting the connection quality inspection data of the turning fixture is: obtaining historical fixture clamping pressure data, the historical fixture clamping pressure data includes the average fixture clamping pressure; obtaining preset fixture connection quality data, the preset fixture connection quality data includes the preset processing part target size and the preset processing part standard surface roughness.

[0035] Furthermore, the specific process of conducting the first performance evaluation analysis of the connection quality of the turning fixture connection quality detection data is as follows: the time taken by the turning fixture to clamp the turning workpiece is recorded as the fixture connection stability detection time, and the fixture connection stability detection time is divided into several fixture clamping time periods; the noise frequency parameters in the fixture clamping time period are obtained by the noise collection device; the vibration frequency parameters in the fixture clamping time period are obtained by the vibration collection device; the fixture clamping pressure parameters in the fixture clamping time period are obtained by the pressure collection device; the noise frequency parameters, vibration frequency parameters and fixture clamping pressure parameters are cleaned to remove obvious abnormal data and erroneous data; the connection quality stability negative influence index in several fixture clamping time periods is obtained by this analysis; the connection quality stability negative influence index of several fixture clamping time periods within the fixture connection stability detection time is arranged in descending order, and the largest connection quality stability negative influence index is selected and recorded as the connection quality stability negative influence index.

[0036] In this embodiment, the specific formula of the negative impact index of connection quality stability under several clamp clamping time periods is obtained through analysis as follows:

[0037] ;

[0038] ;

[0039] like ,but ;

[0040] like ,but ;

[0041] Number the connection quality stability detection points in sequence. Indicates the number of the connection quality stability detection point, , Indicates the total number of connection quality stability detection points.

[0042] Divide the fixture holding time during turning into fixture holding time periods of equal length. Indicates the current fixture holding time period.

[0043] Indicates the negative impact index of the connection quality stability during the current fixture clamping time period, Represents a natural constant.

[0044] The connection quality stability negative influence indexes of several fixture clamping time periods within the fixture connection stability detection time are arranged in descending order, and the largest connection quality stability negative influence index is selected as the connection quality stability negative influence index of this fixture, indicating the lowest level of connection quality stability of this fixture within the fixture connection stability detection time. Indicates the negative impact index of the connection quality stability of this fixture.

[0045] Indicates The maximum value of the noise frequency of each connection quality stability detection point in the current fixture clamping time period, Indicates The minimum noise frequency of each connection quality stability detection point in the current fixture clamping time period.

[0046] Looseness or wear of connecting parts may cause additional noise during machining, and an unstable clamping state may cause increased friction between the workpiece and the fixture, thereby generating noise.

[0047] Indicates The maximum vibration frequency of each connection quality stability detection point in the current fixture clamping time period, Indicates The minimum value of the vibration frequency of the connection quality stability detection point in the current fixture clamping time period.

[0048] An unstable connection may cause the fixture or workpiece to vibrate during machining, and the vibration will be transmitted to the tool, affecting the cutting effect and the surface quality of the workpiece.

[0049] Indicates the fixture connection pressure stability judgment value during the current fixture clamping time period.

[0050] Indicates the number of the clamping pressure monitoring point of the fixture. , Indicates the total number of fixture clamping pressure monitoring points.

[0051] Indicates the negative index of the fixture pressure stability during the current fixture clamping time period. It represents the preset fixture pressure stability threshold, which is directly obtained from the turning fixture connection quality database.

[0052] like , indicating that the negative index of the fixture pressure stability in the current fixture clamping time period is greater than or equal to the preset fixture pressure stability threshold, indicating that the fixture pressure stability does not meet the preset standard, then , at this time, the fixture connection pressure stability judgment value is set to 0.

[0053] like , indicating that the negative index of the fixture pressure stability in the current fixture clamping time period is less than the preset fixture pressure stability threshold, indicating that the fixture pressure stability reaches the preset standard, then , at this time, the fixture connection pressure stability judgment value is set to 1.

[0054] Indicates the current fixture holding time period. The maximum clamping pressure of the clamp under the clamping pressure monitoring point, Indicates the current fixture holding time period. The minimum clamping pressure value of the clamp under the clamping pressure monitoring point, Indicates The average value of the clamping pressure in the historical clamping pressure data of the clamping pressure monitoring points.

[0055] The size and distribution of the clamping force of the turning fixture are crucial to the stability of the connection quality. The evaluation of whether the fixture can evenly clamp the workpiece to prevent it from moving during processing has an important impact on the connection quality of the turning fixture.

[0056] The higher the negative influence index of connection quality stability, the worse the stability of the turning fixture connection quality, and the greater the negative influence of the turning fixture connection quality stability. The lower the negative influence index of connection quality stability, the higher the stability of the turning fixture connection quality, and the smaller the negative influence of the turning fixture connection quality stability.

[0057] Furthermore, the specific process of conducting the second performance evaluation analysis of the connection quality of the turning fixture connection quality detection data is as follows: the actual size of the processed parts is obtained by the size measuring equipment; the surface roughness of the processed parts is obtained by the roughness measuring equipment; and the positive influence index of the connection quality accuracy is obtained by this analysis.

[0058] In this embodiment, the specific formula of the connection quality accuracy positive impact index obtained by this analysis is as follows:

[0059] ;

[0060] Number the precise inspection points of the turning fixture connection quality in sequence. Indicates the number of the precise inspection point of the turning fixture connection quality, , Indicates the total number of points for accurate inspection of the connection quality of the turning fixture.

[0061] Indicates the positive impact index of connection quality accuracy.

[0062] It indicates the actual size of the machined part at the Lth turning fixture connection quality precision detection point. It represents the preset target size of the machined part at the Lth turning fixture connection quality precision detection point.

[0063] It represents the surface roughness of the machined part at the Lth turning fixture connection quality precision detection point, It indicates the preset standard surface roughness of the machined part at the Lth turning fixture connection quality precision inspection point.

[0064] Table 1 is an example table of the positive impact index of connection quality accuracy. The example parameters in Table 1 only take the parameters at a precise detection point of the connection quality of a turning fixture as an example. Table 1 is shown below.

[0065] Table 1 Example table of positive impact index of connection quality accuracy

[0066] Actual size of machined parts (mm) Target size of machined parts (mm) Surface roughness of machined parts (micrometers) Standard surface roughness of machined parts (micrometers) Connection quality accuracy positive impact index 3 4 5 6 2.42938433275 3 4 7 6 1.55475371595 4 3 6 7 2.01003485633 5 6 4 5 3.11719059632 6 7 8 7 2.06074036936

[0067] If the positive influence index of the accuracy of the turning fixture connection quality is high, the turning fixture connection quality is better, which means that the surface roughness of the workpiece processed by the turning fixture is low, the size difference of the parts processed by the turning fixture is small, and the accuracy of the workpiece positioning of the turning fixture is high; if the positive influence index of the accuracy of the turning fixture connection quality is low, the turning fixture connection quality is worse, which means that the surface roughness of the workpiece processed by the turning fixture is high, the size difference of the parts processed by the turning fixture is large, and the accuracy of the workpiece positioning of the turning fixture is low.

[0068] Furthermore, the specific process of obtaining the comprehensive coefficient of connection quality is as follows: the comprehensive coefficient of connection quality is obtained by comprehensive analysis of the negative impact index of connection quality stability and the positive impact index of connection quality accuracy.

[0069] In this embodiment, the connection quality comprehensive coefficient is obtained by comprehensively analyzing the negative impact index of connection quality stability and the positive impact index of connection quality accuracy. The specific formula is as follows:

[0070] ;

[0071] Indicates the negative impact index of connection quality stability.

[0072] Indicates the positive impact index of connection quality accuracy.

[0073] Indicates the comprehensive coefficient of connection quality.

[0074] The ratio of the positive influence index of connection quality accuracy to the negative influence index of connection quality stability can represent a relative performance index of the turning fixture connection quality. If the relative performance index of the turning fixture connection quality is higher, the comprehensive coefficient of connection quality is higher.

[0075] like Figure 2 As shown, it is a schematic diagram of the connection quality comprehensive coefficient function provided in an embodiment of the present application; x is the positive half axis of the horizontal coordinate, and y is the positive half axis of the vertical coordinate.

[0076] Curve a indicates that if the positive impact index of connection quality accuracy is set to a fixed value of 1, the negative impact index of connection quality accuracy is x, and the connection quality comprehensive coefficient is y, the connection quality comprehensive coefficient decreases as the negative impact index of connection quality accuracy increases.

[0077] Curve b indicates that if the negative impact index of connection quality accuracy is set to a fixed value of 1, the positive impact index of connection quality accuracy is x, and the connection quality comprehensive coefficient is y, the connection quality comprehensive coefficient increases with the increase of the positive impact index of connection quality accuracy.

[0078] Furthermore, the specific process of comparing and analyzing the comprehensive coefficient of connection quality with the preset comprehensive connection quality threshold is as follows: if the comprehensive coefficient of connection quality is not less than the preset comprehensive connection quality threshold and if the negative influence index of connection quality stability is not greater than the preset connection quality stability threshold and if the positive influence index of connection quality accuracy is not less than the preset connection quality accuracy threshold, then the connection quality of the turning fixture is judged to be up to standard, and the corresponding turning fixture is recorded as a qualified product; if the comprehensive coefficient of connection quality is not less than the preset comprehensive connection quality threshold and if the negative influence index of connection quality stability is greater than the preset connection quality stability threshold or if the positive influence index of connection quality accuracy is less than the preset connection quality accuracy threshold, then the connection quality of the turning fixture is judged to be not up to standard, and the corresponding turning fixture is recorded as the first defective product.

[0079] In this embodiment, the preset connection quality comprehensive threshold is directly obtained from the turning fixture connection quality database. When the connection quality comprehensive coefficient is not less than the preset connection quality comprehensive threshold, it is judged that the connection quality of the current turning fixture meets the preset standard; when the connection quality comprehensive coefficient is less than the preset connection quality comprehensive threshold, it is judged that the connection quality of the current turning fixture does not meet the preset standard, and a precision turning fixture can be used to improve the positioning accuracy of the fixture.

[0080] Furthermore, comparing and analyzing the comprehensive coefficient of connection quality with the preset comprehensive threshold of connection quality also includes: if the comprehensive coefficient of connection quality is less than the preset comprehensive threshold of connection quality and if the negative influence index of connection quality stability is preset to be greater than the connection quality stability threshold and if the positive influence index of connection quality accuracy is less than the preset connection quality accuracy threshold, then it is judged that the connection quality of the turning fixture does not meet the standards, and the corresponding turning fixture is recorded as a defective product; if the comprehensive coefficient of connection quality is less than the preset comprehensive threshold of connection quality and if the negative influence index of connection quality stability is not greater than the preset connection quality stability threshold or if the positive influence index of connection quality accuracy is not less than the preset connection quality accuracy threshold, then it is judged that the connection quality of the turning fixture does not meet the standards, and the corresponding turning fixture is recorded as a second defective product.

[0081] In this embodiment, if the comprehensive connection quality coefficient of the turning fixture is less than the preset comprehensive connection quality threshold, and at the same time the negative influence index of connection quality stability is greater than the connection quality stability threshold and the positive influence index of connection quality accuracy is less than the connection quality accuracy threshold, then the turning fixture is unqualified; if the comprehensive connection quality coefficient is less than the preset comprehensive connection quality threshold, but the negative influence index of connection quality stability is not greater than the connection quality stability threshold or the positive influence index of connection quality accuracy is not less than the connection quality accuracy threshold, then the turning fixture is the second defective product.

[0082] Furthermore, the specific process of adjusting the turning fixture according to the comparative analysis results is: the turning fixture corresponding to the qualified products is not adjusted; the turning fixture corresponding to the unqualified products is scrapped; the first defective product and the second defective product are repaired, and the repair includes applying an anti-slip coating to the turning fixture and adjusting the clamping pressure of the turning fixture.

[0083] In this embodiment, the surface of the fixture is coated to improve wear resistance; the rework also includes calibrating the turning fixture to ensure that the positioning accuracy of the turning fixture is within the specified tolerance range, and lubricating the components of the turning fixture to reduce wear and improve the operating accuracy of the turning fixture; if the clamping pressure of the turning fixture is unreasonable, the clamping pressure of the turning fixture is adjusted to ensure that the clamping pressure of the fixture is evenly distributed to reduce deformation and vibration of the turning fixture.

[0084] like Figure 3As shown, it is a structural schematic diagram of a connection quality detection system of a turning fixture of a workpiece provided in an embodiment of the present application. The connection quality detection system of a turning fixture of a workpiece provided in an embodiment of the present application includes: a turning fixture installation module, a connection quality data acquisition module, a connection quality first performance evaluation and analysis module, a connection quality second performance evaluation and analysis module, a connection quality comprehensive performance evaluation and analysis module and a connection quality adjustment module; a turning fixture installation module is used to install the turning fixture; a connection quality data acquisition module is used to collect connection quality detection data of the turning fixture; a connection quality first performance evaluation and analysis module is used to evaluate the connection quality of the turning fixture The first performance evaluation and analysis module of connection quality is used to perform connection quality inspection data to obtain the negative impact index of connection quality stability; the second performance evaluation and analysis module of connection quality is used to perform connection quality second performance evaluation and analysis on the connection quality inspection data of the turning fixture to obtain the positive impact index of connection quality accuracy; the connection quality comprehensive performance evaluation and analysis module is used to obtain the connection quality comprehensive coefficient based on the comprehensive analysis of the negative impact index of connection quality stability and the positive impact index of connection quality accuracy; the connection quality adjustment module is used to compare and analyze the connection quality comprehensive coefficient with the preset connection quality comprehensive threshold value, and adjust the turning fixture according to the comparison and analysis results.

[0085] The technical scheme in the above-mentioned embodiment of the present application has at least the following technical effects or advantages: Compared with a three-piece can weld repainting detection method disclosed in the patent application with publication number: CN117030709A, the embodiment of the present application obtains the connection quality comprehensive coefficient through comprehensive analysis of the negative influence index of connection quality stability and the positive influence index of connection quality accuracy, and better quantifies the connection quality detection data of the turning fixture, including noise frequency parameters, vibration frequency parameters, fixture clamping pressure parameters, actual size of the processed lathe parts and surface roughness of the processed lathe parts, so as to analyze these The connection quality parameters of the turning fixture are convenient for adjusting the turning fixture according to the comparative analysis results, thereby improving the real-time performance of the connection quality detection of the turning fixture; relative to the patent application with publication number: CN118090595A which discloses a device and method for detecting the welding quality of PIN needles, the embodiment of the present application ensures that the connection quality of the turning fixture is always within the standard range, thereby scrapping the turning fixture corresponding to the unqualified products; the defective products are repaired, and the repair includes applying an anti-slip coating to the turning fixture and adjusting the clamping pressure of the turning fixture, thereby improving the accuracy of the connection quality detection of the turning fixture.

[0086] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0087] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0088] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0089] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0090] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0091] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for detecting the connection quality of a turning fixture of a workpiece, It is characterized in that The following steps are involved: Install the turning fixture; Collect connection quality inspection data of turning fixtures; The connection quality test data of the turning fixture is analyzed by first evaluating the connection quality and obtaining the negative impact index of the connection quality stability. The connection quality test data of the turning fixture is analyzed by the second performance evaluation of the connection quality to obtain the positive impact index of the connection quality accuracy; The connection quality comprehensive coefficient is obtained by comprehensive analysis based on the negative impact index of connection quality stability and the positive impact index of connection quality accuracy; Compare and analyze the connection quality comprehensive coefficient with the preset connection quality comprehensive threshold, and adjust the turning fixture according to the comparison and analysis results; The specific process of performing the first performance evaluation analysis of the connection quality of the turning fixture connection quality detection data is as follows: The time taken by the turning fixture to clamp the turning workpiece during the machining process is recorded as the fixture connection stability detection time, and the fixture connection stability detection time is divided into a number of fixture clamping time periods; The noise frequency parameters during the clamping time period of the fixture are obtained by using a noise collection device; The vibration frequency parameters of the fixture during the clamping time period are obtained by a vibration acquisition device; Obtaining the clamping pressure parameters of the clamp during the clamping time period through the pressure acquisition device; Perform data cleaning on noise frequency parameters, vibration frequency parameters and fixture clamping pressure parameters to remove obvious abnormal data and erroneous data; This analysis yields the negative impact index of connection quality stability under several clamping time periods; The specific formula of the negative impact index of connection quality stability under several clamping time periods is analyzed as follows: ； ； like ,but ;like ,but ; Indicates the number of the connection quality stability detection point, , Indicates the total number of connection quality stability detection points; Indicates the current fixture holding time period; Indicates the negative impact index of the connection quality stability during the current fixture clamping time period, represents a natural constant; Indicates The maximum value of the noise frequency of each connection quality stability detection point in the current fixture clamping time period, Indicates The minimum value of the noise frequency of each connection quality stability detection point in the current fixture clamping time period; Indicates The maximum vibration frequency of each connection quality stability detection point in the current fixture clamping time period, Indicates The minimum value of the vibration frequency of the connection quality stability detection point in the current fixture clamping time period; Indicates the stability judgment value of the clamp connection pressure during the current clamp clamping time period; Indicates the number of the clamping pressure monitoring point of the fixture. , Indicates the total number of clamping pressure monitoring points of the fixture; Indicates the negative index of the fixture pressure stability during the current fixture clamping time period. It represents the preset clamp pressure stability threshold, which is directly obtained from the turning clamp connection quality database; Indicates the current fixture holding time period. The maximum clamping pressure of the clamp under the clamping pressure monitoring point, Indicates the current fixture holding time period. The minimum clamping pressure value of the clamp under the clamping pressure monitoring point, Indicates The average clamping pressure value of the historical clamping pressure data of the clamping pressure monitoring points; The negative impact indexes of connection quality stability of several clamp holding time periods within the clamp connection stability detection time are arranged in descending order, and the largest negative impact index of connection quality stability is selected and recorded as the negative impact index of connection quality stability. ; The specific process of performing the second performance evaluation analysis of the connection quality of the turning fixture connection quality detection data is as follows: The actual size of the machined parts is obtained through the dimension measuring equipment; The surface roughness of the machined parts is obtained by using roughness measuring equipment; From this analysis, the positive impact index of connection quality accuracy is obtained; The specific formula for the positive impact index of connection quality accuracy is as follows: ； Indicates the number of the precise inspection point of the turning fixture connection quality, , Indicates the total number of numbers of precise inspection points for the connection quality of the turning fixture; Indicates the positive impact index of connection quality accuracy; It indicates the actual size of the machined part at the Lth turning fixture connection quality precision detection point. It represents the preset target size of the machined part at the Lth turning fixture connection quality precision detection point; It represents the surface roughness of the machined part at the Lth turning fixture connection quality precision detection point, Indicates the preset standard surface roughness of the machined part at the Lth turning fixture connection quality precision detection point; The specific process of obtaining the connection quality comprehensive coefficient is as follows: The connection quality comprehensive coefficient is obtained by comprehensive analysis of the negative impact index of connection quality stability and the positive impact index of connection quality accuracy; The specific formula of the connection quality comprehensive coefficient is as follows: ； Indicates the negative impact index of connection quality stability; Indicates the positive impact index of connection quality accuracy; Indicates the comprehensive coefficient of connection quality.

2. A method for detecting the connection quality of a turning fixture of a workpiece as claimed in claim 1, It is characterized in that The specific process of installing the turning fixture is as follows: Connect the turning fixture to the turned workpiece and check the connection accuracy of the turning fixture using a connection quality measuring device; If the positioning accuracy of the turning fixture is outside the specified tolerance range, adjustments are made to reduce the error. If the positioning accuracy of the turning fixture is within the specified tolerance range, no adjustments are required.

3. A method for detecting the connection quality of a turning fixture of a workpiece as claimed in claim 1, It is characterized in that The specific process of collecting the connection quality detection data of the turning fixture is as follows: Acquiring historical clamping pressure data of the clamp, wherein the historical clamping pressure data of the clamp includes an average clamping pressure value; The preset fixture connection quality data is obtained, wherein the preset fixture connection quality data includes a preset processing part target size and a preset processing part standard surface roughness.

4. A method for detecting the connection quality of a turning fixture of a workpiece as claimed in claim 1, It is characterized in that The specific process of comparing and analyzing the connection quality comprehensive coefficient with the preset connection quality comprehensive threshold is as follows: If the connection quality comprehensive coefficient is not less than the preset connection quality comprehensive threshold value, if the connection quality stability negative impact index is not greater than the preset connection quality stability threshold value, and if the connection quality accuracy positive impact index is not less than the preset connection quality accuracy threshold value, then it is judged that the connection quality of the turning fixture meets the standard, and the corresponding turning fixture is recorded as a qualified product; If the comprehensive coefficient of connection quality is not less than the preset comprehensive threshold of connection quality and if the negative impact index of connection quality stability is greater than the preset connection quality stability threshold or if the positive impact index of connection quality accuracy is less than the preset connection quality accuracy threshold, then it is judged that the connection quality of the turning fixture does not meet the standard, and the corresponding turning fixture is recorded as the first defective product.

5. A method for detecting the connection quality of a turning fixture of a workpiece as claimed in claim 1, It is characterized in that The comparing and analyzing the connection quality comprehensive coefficient with a preset connection quality comprehensive threshold value also includes: If the connection quality comprehensive coefficient is less than the preset connection quality comprehensive threshold value, if the connection quality stability negative impact index is greater than the preset connection quality stability threshold value, and if the connection quality accuracy positive impact index is less than the preset connection quality accuracy threshold value, then it is judged that the connection quality of the turning fixture does not meet the standard, and the corresponding turning fixture is recorded as a defective product; If the comprehensive coefficient of connection quality is less than the preset comprehensive threshold of connection quality and if the negative impact index of connection quality stability is not greater than the preset connection quality stability threshold or if the positive impact index of connection quality accuracy is not less than the preset connection quality accuracy threshold, then it is judged that the connection quality of the turning fixture does not meet the standard and the corresponding turning fixture is recorded as the second defective product.

6. A method for detecting the connection quality of a turning fixture of a workpiece as claimed in claim 1, It is characterized in that The specific process of adjusting the turning fixture according to the comparative analysis results is as follows: The turning fixture corresponding to the qualified products is not adjusted; Scrap the turning fixtures corresponding to the unqualified products; The first defective product and the second defective product are repaired, and the repair includes applying an anti-slip coating to the turning fixture and adjusting the clamping pressure of the turning fixture.

7. A quality inspection system using the method for inspecting the connection quality of a turning fixture of a workpiece as claimed in any one of claims 1 to 6, It is characterized in that It includes a turning fixture installation module, a connection quality data acquisition module, a connection quality first performance evaluation and analysis module, a connection quality second performance evaluation and analysis module, a connection quality comprehensive performance evaluation and analysis module and a connection quality adjustment module; A turning fixture installation module, used for installing a turning fixture; A connection quality data acquisition module is used to collect connection quality detection data of turning fixtures; A connection quality first performance evaluation and analysis module is used to perform connection quality first performance evaluation and analysis on the connection quality detection data of the turning fixture to obtain a negative impact index of connection quality stability; The connection quality second performance evaluation and analysis module is used to perform connection quality second performance evaluation and analysis on the connection quality detection data of the turning fixture to obtain the connection quality accuracy positive impact index; The connection quality comprehensive performance evaluation and analysis module is used to obtain the connection quality comprehensive coefficient based on the connection quality stability negative impact index and the connection quality accuracy positive impact index; The connection quality adjustment module is used to compare and analyze the connection quality comprehensive coefficient with the preset connection quality comprehensive threshold, and adjust the turning fixture according to the comparison and analysis results.

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