Burr cylinder evaluation method and device, electronic equipment and storage medium

Abstract

The application relates to the technical field of vehicles, in particular to a burr cylinder liner evaluation method and device, electronic equipment and a storage medium, wherein the method comprises the following steps: determining a plurality of rotation angles of a burr cylinder liner to be detected and a plurality of target point positions corresponding to each rotation angle; based on each rotation angle, the burr cylinder liner to be detected is controlled to rotate, and the height values of the plurality of target point positions corresponding to each rotation angle are measured; based on the height values of the plurality of target point positions corresponding to each rotation angle, a target matrix is generated, the height evaluation ratio, the average gradient value and the average variance value of the burr cylinder liner to be detected are obtained according to the target matrix, and the evaluation result of the burr cylinder liner to be detected is obtained according to the height evaluation ratio, the average gradient value and the average variance value. Therefore, the problem that related technologies cannot comprehensively and accurately evaluate the burr quality of the burr cylinder liner is solved, the burr quality of the burr cylinder liner can be comprehensively detected to determine whether the burr quality meets engineering requirements, and the cracking of the cylinder liner is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a method, apparatus, electronic device and storage medium for evaluating burr cylinder liners. Background Technology

[0002] During automotive engine bench testing, due to differences in burr height, shape consistency, and uniformity, burr cylinder liners may crack when the engine is running under harsh conditions. Currently, the main solution to this problem is to test the surface volume ratio of the burr cylinder liners before they leave the factory. The surface volume ratio represents the burr height, shape consistency, and uniformity of the burr cylinder liners.

[0003] However, using the area ratio as a single value to evaluate several characteristics of burr cylinder liners is not a comprehensive or accurate assessment of the quality of burrs on cylinder liners, and cannot fully meet engineering needs. Summary of the Invention

[0004] This application provides a method, apparatus, electronic device, and storage medium for evaluating burred cylinder liners, in order to solve the problem that related technologies cannot comprehensively and accurately evaluate the burr quality of burred cylinder liners. It can detect whether the burr quality of burred cylinder liners meets engineering requirements, thereby reducing the occurrence of cylinder liner cracking.

[0005] The first aspect of this application provides a method for evaluating burr-filled cylinder liners, comprising the following steps:

[0006] Determine multiple rotation angles of the cylinder liner to be inspected and multiple target points corresponding to each rotation angle;

[0007] Based on each rotation angle, the cylinder liner to be inspected is controlled to rotate, and the height values ​​of multiple target points corresponding to each rotation angle are measured.

[0008] Based on the height values ​​of multiple target points corresponding to each rotation angle, a target matrix is ​​generated. The height evaluation ratio, average gradient value, and average variance value of the cylinder liner with burrs to be detected are obtained according to the target matrix. The evaluation result of the cylinder liner with burrs to be detected is obtained according to the height evaluation ratio, the average gradient value, and the average variance value.

[0009] Optionally, in some embodiments, obtaining the height evaluation ratio, average gradient value, and average variance value of the cylinder liner with the burr to be detected based on the target matrix includes:

[0010] Count the number of all elements in the target matrix that are greater than a preset height value;

[0011] The high evaluation ratio is obtained by calculating the ratio of the number of elements to the total number of elements in the target matrix.

[0012] Optionally, in some embodiments, obtaining the height evaluation ratio, average gradient value, and average variance value of the cylinder liner with burrs to be detected based on the target matrix further includes:

[0013] Calculate the gradient value of each element in the target matrix;

[0014] The average gradient value is obtained based on the gradient value of each element.

[0015] Optionally, in some embodiments, obtaining the height evaluation ratio, average gradient value, and average variance value of the cylinder liner with burrs to be detected based on the target matrix further includes:

[0016] Calculate the variance of each row and the variance of each column of the target matrix;

[0017] The average variance is calculated based on the variance of each row and the variance of each column of the target matrix.

[0018] Optionally, in some embodiments, obtaining the evaluation result of the burr cylinder liner to be detected based on the height evaluation ratio, the average gradient value, and the average variance value includes:

[0019] Determine whether the height evaluation ratio is lower than a first preset threshold, whether the average gradient value is lower than a second preset threshold, and whether the average variance value is lower than a third preset threshold;

[0020] If the height evaluation ratio is lower than the first preset threshold, the average gradient value is lower than the second preset threshold, and the average variance value is lower than the third preset threshold, then the evaluation result is qualified.

[0021] A second aspect of this application provides an evaluation device for burr-prone cylinder liners, comprising:

[0022] The determination module is used to determine multiple rotation angles of the cylinder liner to be inspected for burrs and multiple target points corresponding to each rotation angle;

[0023] The measurement module is used to control the cylinder liner to be inspected to rotate based on each rotation angle, and to measure the height values ​​of multiple target points corresponding to each rotation angle.

[0024] The evaluation module is used to generate a target matrix based on the height values ​​of multiple target points corresponding to each rotation angle, and to obtain the height evaluation ratio, average gradient value and average variance value of the cylinder liner to be inspected based on the target matrix, and to obtain the evaluation result of the cylinder liner to be inspected based on the height evaluation ratio, the average gradient value and the average variance value.

[0025] Optionally, in some embodiments, the evaluation module includes:

[0026] The statistics unit is used to count the number of all elements in the target matrix that are greater than a preset height value;

[0027] The first calculation unit is used to calculate the ratio of the number of elements to the total number of elements in the target matrix to obtain the high evaluation ratio.

[0028] Optionally, in some embodiments, the evaluation module further includes:

[0029] The second calculation unit is used to calculate the gradient value of each element in the target matrix;

[0030] A generation unit is used to obtain the average gradient value based on the gradient value of each element.

[0031] Optionally, in some embodiments, the evaluation module further includes:

[0032] The third calculation unit is used to calculate the variance value of each row of the target matrix and the variance value of each column of the target matrix;

[0033] The fourth calculation unit is used to calculate the average variance value based on the variance value of each row of the target matrix and the variance value of each column of the target matrix.

[0034] Optionally, in some embodiments, the evaluation module includes:

[0035] The judgment unit is used to determine whether the high evaluation ratio is lower than a first preset threshold, whether the average gradient value is lower than a second preset threshold, and whether the average variance value is lower than a third preset threshold.

[0036] An evaluation unit is configured to determine if the evaluation result is qualified when the height evaluation ratio is lower than a first preset threshold, the average gradient value is lower than a second preset threshold, and the average variance value is lower than a third preset threshold.

[0037] A third aspect of this application provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for evaluating burr cylinder liners as described in the above embodiments.

[0038] A fourth aspect of this application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the method for evaluating burr cylinder liners as described in the above embodiments.

[0039] Therefore, by determining multiple rotation angles of the cylinder liner to be inspected and multiple target points corresponding to each rotation angle, and controlling the rotation of the cylinder liner to be inspected based on each rotation angle, the height values ​​of the multiple target points corresponding to each rotation angle are measured. Based on the height values ​​of the multiple target points corresponding to each rotation angle, a target matrix is ​​generated. The height evaluation ratio, average gradient value, and average variance value of the cylinder liner to be inspected are obtained from the target matrix. The evaluation result of the cylinder liner to be inspected is then obtained based on the height evaluation ratio, average gradient value, and average variance value. This solves the problem that related technologies cannot comprehensively and accurately evaluate the burr quality of cylinder liners, enabling comprehensive detection of whether the burr quality of cylinder liners meets engineering requirements, thereby reducing the occurrence of cylinder liner cracking.

[0040] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0041] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0042] Figure 1 This is a flowchart of a method for evaluating burr cylinder liners according to an embodiment of this application;

[0043] Figure 2 This is a block diagram of an evaluation device for burr cylinder liners provided according to an embodiment of this application;

[0044] Figure 3 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of this application. Detailed Implementation

[0045] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0046] The following describes a method, apparatus, electronic device, and storage medium for evaluating burr cylinder liners according to embodiments of this application, with reference to the accompanying drawings. Addressing the problem mentioned in the background art that related technologies cannot comprehensively and accurately evaluate the burr quality of burr cylinder liners, this application provides a method for evaluating burr cylinder liners. In this method, multiple rotation angles of the burr cylinder liner to be tested and multiple target points corresponding to each rotation angle are determined. Based on each rotation angle, the burr cylinder liner to be tested is controlled to rotate, and the height values ​​of the multiple target points corresponding to each rotation angle are measured. Based on the height values ​​of the multiple target points corresponding to each rotation angle, a target matrix is ​​generated. The height evaluation ratio, average gradient value, and average variance value of the burr cylinder liner to be tested are obtained from the target matrix. The evaluation result of the burr cylinder liner to be tested is obtained based on the height evaluation ratio, average gradient value, and average variance value. This solves the problem that related technologies cannot comprehensively and accurately evaluate the burr quality of burr cylinder liners, and can comprehensively detect whether the burr quality of the burr cylinder liner meets engineering requirements, thereby reducing the occurrence of cylinder liner cracking.

[0047] Specifically, Figure 1 This is a flowchart illustrating a method for evaluating burr cylinder liners provided in an embodiment of this application.

[0048] like Figure 1 As shown, the evaluation method for this burr-covered cylinder liner includes the following steps:

[0049] In step S101, multiple rotation angles of the cylinder liner to be inspected and multiple target points corresponding to each rotation angle are determined.

[0050] It should be noted that the embodiments of this application can use a burr cylinder liner inspection device to inspect the burr cylinder liner to be inspected. The burr cylinder liner inspection device may include a laser rangefinder body, a base device, a controller, a memory, a display, an input device, etc., which are packaged together as a product for inspecting and evaluating the burr quality of the burr cylinder liner.

[0051] When inspecting the burr quality of a burr cylinder liner, the burr cylinder liner is placed on a base device that allows the cylinder liner to rotate along its central axis. A laser rangefinder with controllable horizontal movement is used on top. Keeping the distance between the probe and the central axis of the burr cylinder liner constant, the burr area on the outside of the burr cylinder liner is scanned with the laser rangefinder to obtain the height value of each position in the burr area.

[0052] Specifically, in this embodiment, the cylinder liner to be inspected can be rotated by a preset angle each time. Preferably, the preset angle is 0.5°, until it rotates one full circle. At each rotation angle, there is a preset number of points. Preferably, the preset number is 1000. For example, in this embodiment, the cylinder liner to be inspected can be controlled to rotate by 0.5° each time. The position of the laser rangefinder is always kept perpendicular to the highest point of the burr surface of the cylinder liner. After the base device drives the cylinder liner to rotate by 0.5°, the laser rangefinder moves horizontally at a uniform speed and measures the height of the points at regular intervals. For every 0.5° rotation of the cylinder liner to be inspected, the laser rangefinder measures 1000 points. After rotating 360 degrees, the data acquisition of the entire cylinder liner to be inspected is completed.

[0053] In step S102, based on each rotation angle, the cylinder liner to be inspected is controlled to rotate, and the height values ​​of multiple target points corresponding to each rotation angle are measured.

[0054] Specifically, in this embodiment, the burr-covered cylinder liner is rotated, and the height values ​​of all target points at each rotation angle are measured until the height values ​​of all target points at all rotation angles are obtained. For example, 1000 points corresponding to 0.5° are measured at 0.5°, and 1000 points corresponding to 1° are measured at 1°, until the points corresponding to all angles at 360° are obtained.

[0055] In step S103, a target matrix is ​​generated based on the height values ​​of multiple target points corresponding to each rotation angle. The height evaluation ratio, average gradient value, and average variance value of the burr cylinder liner to be detected are obtained based on the target matrix. The evaluation result of the burr cylinder liner to be detected is obtained based on the height evaluation ratio, average gradient value, and average variance value.

[0056] Specifically, the height values ​​of multiple target points corresponding to each rotation angle are used to generate a target matrix. For example, a set of height values ​​is measured every 0.5° until 360° is measured. This results in a target matrix of 720 rows and 1000 columns of height value data. This gives us the target matrix of height values ​​of all points on the burr cylinder liner. Based on the target matrix, we obtain the height evaluation ratio, average gradient value, and average variance value of the burr cylinder liner to be inspected. The evaluation result of the burr cylinder liner to be inspected is then obtained based on the height evaluation ratio, average gradient value, and average variance value.

[0057] Optionally, in some embodiments, obtaining the height evaluation ratio, average gradient value, and average variance value of the cylinder liner to be detected based on the target matrix includes: counting the number of all elements in the target matrix that are greater than a preset height value; and calculating the height evaluation ratio by the ratio of the number of elements to the total number of elements in the target matrix.

[0058] The preset height value can be set by the user, obtained through a limited number of experiments, or obtained through a limited number of computer simulations; no specific limitations are made here.

[0059] In actual implementation, the embodiments of this application allow the user to input a preset height value A, count the number of elements M in the target matrix that are greater than A, and the total number of elements in the target matrix is ​​N. The height evaluation ratio of M / N is used to evaluate the quality of the burr height.

[0060] Optionally, in some embodiments, obtaining the height evaluation ratio, average gradient value, and average variance value of the cylinder liner to be detected based on the target matrix further includes: calculating the gradient value of each element in the target matrix; and obtaining the average gradient value based on the gradient value of each element.

[0061] Specifically, in the target matrix, the gradient value B of each element of the target matrix is ​​calculated, and the average gradient value B is calculated based on the gradient value B of each element. The shape consistency of the burrs is evaluated based on the average gradient value B.

[0062] Optionally, in some embodiments, obtaining the height evaluation ratio, average gradient value, and average variance value of the cylinder liner to be detected based on the target matrix further includes: calculating the variance value of each row and each column of the target matrix; and calculating the average variance value based on the variance values ​​of each row and each column of the target matrix.

[0063] Specifically, the variance C is calculated in each row and column of the matrix, and the average variance C is calculated. The uniformity of the burrs is evaluated based on the average variance C.

[0064] Optionally, in some embodiments, the evaluation result of the burr cylinder liner to be detected is obtained based on the height evaluation ratio, the average gradient value, and the average variance value, including: determining whether the height evaluation ratio is lower than a first preset threshold, whether the average gradient value is lower than a second preset threshold, and whether the average variance value is lower than a third preset threshold; if the height evaluation ratio is lower than the first preset threshold, the average gradient value is lower than the second preset threshold, and the average variance value is lower than the third preset threshold, then the evaluation result is qualified.

[0065] The first, second, and third preset thresholds can be set by the user, obtained through a limited number of experiments, or obtained through a limited number of computer simulations; no specific limitations are imposed here.

[0066] Specifically, in this application embodiment, a first preset threshold, a second preset threshold, and a third preset threshold can be set to evaluate the quality of burr height, the shape consistency of burrs, and the uniformity of burrs. When the height evaluation ratio is lower than the first preset threshold, the average gradient value is lower than the second preset threshold, and the average variance value is lower than the third preset threshold, it is determined that the quality of burr height, the shape consistency of burrs, and the uniformity of burrs meet the engineering requirements.

[0067] In actual implementation, the embodiments of this application can write the evaluation algorithm into the controller and memory. The controller receives the numerical matrix measured by the laser rangefinder and obtains M / N through the evaluation algorithm, and outputs the result to the display. The controller also writes the data into the memory. The overall workflow is as follows: the user places the burr cylinder liner on the base device, adjusts the distance between the laser rangefinder and the axis of the burr cylinder liner, inputs the target height value A, and then starts running the measurement program. After the program is completed, the display shows the measurement result.

[0068] The evaluation method for burr-prone cylinder liners proposed in this application involves determining multiple rotation angles of the cylinder liner to be tested and multiple target points corresponding to each rotation angle. Based on each rotation angle, the cylinder liner is controlled to rotate, and the height values ​​of the multiple target points corresponding to each rotation angle are measured. A target matrix is ​​generated based on the height values ​​of the multiple target points corresponding to each rotation angle. The height evaluation ratio, average gradient value, and average variance value of the cylinder liner to be tested are obtained from the target matrix. The evaluation result of the cylinder liner to be tested is obtained based on the height evaluation ratio, average gradient value, and average variance value. This solves the problem that related technologies cannot comprehensively and accurately evaluate the burr quality of cylinder liners, enabling comprehensive detection of whether the burr quality of cylinder liners meets engineering requirements, thereby reducing cylinder liner cracking.

[0069] Next, the evaluation device for burr cylinder liners according to embodiments of this application is described with reference to the accompanying drawings.

[0070] Figure 2 This is a block diagram of an evaluation device for burr cylinder liners according to an embodiment of this application.

[0071] like Figure 2 As shown, the evaluation device 10 for the burr cylinder liner includes: a determination module 100, a measurement module 200, and an evaluation module 300.

[0072] The determining module 100 is used to determine multiple rotation angles of the cylinder liner to be inspected for burrs and multiple target points corresponding to each rotation angle.

[0073] The measurement module 200 is used to control the cylinder liner to be inspected to rotate based on each rotation angle, and to measure the height values ​​of multiple target points corresponding to each rotation angle.

[0074] The evaluation module 300 is used to generate a target matrix based on the height values ​​of multiple target points corresponding to each rotation angle, and obtain the height evaluation ratio, average gradient value and average variance value of the cylinder liner to be inspected based on the target matrix, and obtain the evaluation result of the cylinder liner to be inspected based on the height evaluation ratio, average gradient value and average variance value.

[0075] Optionally, in some embodiments, the evaluation module 300 includes a statistical unit and a first calculation unit.

[0076] The statistical unit is used to count the number of all elements in the target matrix that are greater than a preset height value.

[0077] The first calculation unit is used to calculate the ratio of the number of elements to the total number of elements in the target matrix to obtain a highly evaluated ratio.

[0078] Optionally, in some embodiments, the evaluation module 300 further includes a second calculation unit and a generation unit.

[0079] The second calculation unit is used to calculate the gradient value of each element in the target matrix.

[0080] A generation unit is used to obtain the average gradient value based on the gradient value of each element.

[0081] Optionally, in some embodiments, the evaluation module 300 further includes a third calculation unit and a fourth calculation unit.

[0082] The third calculation unit is used to calculate the variance of each row and each column of the target matrix.

[0083] The fourth calculation unit is used to calculate the average variance value based on the variance value of each row and the variance value of each column of the target matrix.

[0084] Optionally, in some embodiments, the evaluation module 300 includes a judgment unit and an evaluation unit.

[0085] The judgment unit is used to determine whether the high evaluation ratio is lower than the first preset threshold, whether the average gradient value is lower than the second preset threshold, and whether the average variance value is lower than the third preset threshold.

[0086] The evaluation unit is used to determine the evaluation result as qualified if the height evaluation ratio is lower than the first preset threshold, the average gradient value is lower than the second preset threshold, and the average variance value is lower than the third preset threshold.

[0087] It should be noted that the explanation of the aforementioned method for evaluating burr cylinder liners also applies to the evaluation device for burr cylinder liners in this embodiment, and will not be repeated here.

[0088] The burr cylinder liner evaluation device proposed in this application determines multiple rotation angles of the burr cylinder liner to be tested and multiple target points corresponding to each rotation angle. Based on each rotation angle, the burr cylinder liner to be tested is controlled to rotate, and the height values ​​of the multiple target points corresponding to each rotation angle are measured. Based on the height values ​​of the multiple target points corresponding to each rotation angle, a target matrix is ​​generated. The height evaluation ratio, average gradient value, and average variance value of the burr cylinder liner to be tested are obtained from the target matrix. The evaluation result of the burr cylinder liner to be tested is obtained based on the height evaluation ratio, average gradient value, and average variance value. This solves the problem that related technologies cannot comprehensively and accurately evaluate the burr quality of burr cylinder liners, and can comprehensively detect whether the burr quality of burr cylinder liners meets engineering requirements, thereby reducing cylinder liner cracking.

[0089] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device may include:

[0090] The memory 301, the processor 302, and the computer program stored on the memory 301 and capable of running on the processor 302.

[0091] When the processor 302 executes the program, it implements the evaluation method for burr cylinder liners provided in the above embodiments.

[0092] Furthermore, electronic devices also include:

[0093] Communication interface 303 is used for communication between memory 301 and processor 302.

[0094] The memory 301 is used to store computer programs that can run on the processor 302.

[0095] The memory 301 may include high-speed RAM (Random Access Memory) memory, and may also include non-volatile memory, such as at least one disk storage.

[0096] If the memory 301, processor 302, and communication interface 303 are implemented independently, then the communication interface 303, memory 301, and processor 302 can be interconnected via a bus to complete communication between them. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 3 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0097] Optionally, in a specific implementation, if the memory 301, processor 302, and communication interface 303 are integrated on a single chip, then the memory 301, processor 302, and communication interface 303 can communicate with each other through an internal interface.

[0098] Processor 302 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement embodiments of this application.

[0099] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for evaluating burr cylinder liners.

[0100] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0101] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0102] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0103] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (FPGAs), field-programmable gate arrays (FPGAs), etc.

[0104] Those skilled in the art will understand that all or part of the steps of the methods described in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it includes one or a combination of the steps of the method embodiments.

[0105] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A method for evaluating burr-covered cylinder liners, characterized in that, Includes the following steps: Determine multiple rotation angles of the cylinder liner to be inspected and multiple target points corresponding to each rotation angle; Based on each rotation angle, the cylinder liner to be inspected is controlled to rotate, and the height values ​​of multiple target points corresponding to each rotation angle are measured. Based on the height values ​​of multiple target points corresponding to each rotation angle, a target matrix is ​​generated. Then, based on the target matrix, the height evaluation ratio, average gradient value, and average variance value of the cylinder liner with burrs to be detected are obtained. Finally, based on the height evaluation ratio, the average gradient value, and the average variance value, the evaluation result of the cylinder liner with burrs to be detected is obtained. The step of obtaining the height evaluation ratio, average gradient value, and average variance value of the cylinder liner to be detected based on the target matrix includes: counting the number of all elements in the target matrix that are greater than a preset height value; and calculating the ratio of the number of elements to the total number of elements in the target matrix to obtain the height evaluation ratio. The step of obtaining the height evaluation ratio, average gradient value, and average variance value of the cylinder liner with burrs to be detected based on the target matrix further includes: calculating the gradient value of each element in the target matrix; and obtaining the average gradient value based on the gradient value of each element. The step of obtaining the height evaluation ratio, average gradient value, and average variance value of the cylinder liner to be detected with burrs based on the target matrix further includes: calculating the variance value of each row and each column of the target matrix; and calculating the average variance value based on the variance values ​​of each row and each column of the target matrix.

2. The method according to claim 1, characterized in that, The evaluation result of the burr cylinder liner to be detected based on the height evaluation ratio, the average gradient value, and the average variance value includes: Determine whether the height evaluation ratio is lower than a first preset threshold, whether the average gradient value is lower than a second preset threshold, and whether the average variance value is lower than a third preset threshold; If the height evaluation ratio is lower than the first preset threshold, the average gradient value is lower than the second preset threshold, and the average variance value is lower than the third preset threshold, then the evaluation result is qualified.

3. An evaluation device for burr-covered cylinder liners, characterized in that, include: The determination module is used to determine multiple rotation angles of the cylinder liner to be inspected for burrs and multiple target points corresponding to each rotation angle; The measurement module is used to control the cylinder liner to be inspected to rotate based on each rotation angle, and to measure the height values ​​of multiple target points corresponding to each rotation angle. The evaluation module is used to generate a target matrix based on the height values ​​of multiple target points corresponding to each rotation angle, and to obtain the height evaluation ratio, average gradient value, and average variance value of the cylinder liner with burrs to be detected based on the target matrix. Finally, the evaluation result of the cylinder liner with burrs to be detected is obtained based on the height evaluation ratio, the average gradient value, and the average variance value. The evaluation module includes: a statistics unit, used to count the number of all elements in the target matrix that are greater than a preset height value; and a first calculation unit, used to calculate the ratio of the number of elements to the total number of elements in the target matrix to obtain the height evaluation ratio. The evaluation module further includes: a second calculation unit for calculating the gradient value of each element in the target matrix; and a generation unit for obtaining the average gradient value based on the gradient value of each element. The evaluation module further includes: a third calculation unit for calculating the variance value of each row of the target matrix and the variance value of each column of the target matrix; and a fourth calculation unit for calculating the average variance value based on the variance value of each row of the target matrix and the variance value of each column of the target matrix.

4. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the method for evaluating burr cylinder liners as described in any one of claims 1-2.

5. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the evaluation method for burr cylinder liners as described in any one of claims 1-2.

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