Laser grinding control system for diamond compact

Abstract

The invention relates to the technical field of diamond compact laser grinding in superhard material processing, in particular to a laser grinding control system for a diamond compact, which is characterized in that a partition module is arranged to divide a processing surface into a high grinding area, a low grinding area and a gradient grinding area in a concentric ring shape based on data of a height measuring probe; the monitoring module synchronizes the laser pulse to capture a spark image, quantifies a projection area proportion, a maximum spark cluster diameter and dispersion, binds a polar coordinate position and a grinding area number; the control module grinds for the first time according to the initial removal amount and dynamically adjusts the subsequent removal amount of each ring area according to abnormal distribution of sparks; and the data feedback module judges that the abnormal points are caused by elevation difference and feeds back when the abnormal points are intensively distributed in a single grinding area and exceed a threshold value, so that the grinding quality can be effectively improved, effective data feedback is provided for related technicians, timely tracing of quality problems is facilitated, and machining control of planar or special-shaped diamond compacts can be adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of laser grinding of diamond composite sheets in superhard material processing, and particularly to a laser grinding control system for diamond composite sheets. Background Art

[0002] Effective control of the removal amount during the laser grinding process is one of the key factors. Excessive removal may cause damage to the ground parts, while too little removal cannot guarantee the grinding efficiency. Therefore, to ensure the accuracy of the removal amount, continuous monitoring and acquisition of the grinding process are required.

[0003] For example, in the prior art, Chinese Patent Publication No. CN117961303A discloses a laser grinding device and a grinding method. The laser grinding device includes: a frame, a working chamber is configured inside the frame, a grinding assembly is configured in the working chamber, the grinding assembly includes: a gantry arm, the gantry arm is fixed on a gantry base, a first driving component is provided on one side of the top of the gantry arm, the first driving component is connected to a side plate, and based on the drive of the first driving component, the side plate moves along the Z direction. An image acquisition device is configured on the side plate, the image acquisition device is electrically connected to a control module, the imaging part of the image acquisition device faces the side wall of the workpiece, and the image acquisition device takes a picture of the workpiece based on the instruction of the control module and feeds back the image information to the control module. In this way, the control module can identify the layered information based on the side wall information of the workpiece, realize rapid measurement, and rapidly grind the workpiece.

[0004] However, the following technical problems exist in the above technology: simply applying images for measurement cannot detect subtle abnormalities during the laser grinding process, and there is a lack of effective associated control for the grinding process, resulting in insufficiently high-quality grinding. Summary of the Invention

[0005] Therefore, the present invention provides a laser grinding control system for diamond composite sheets to solve the problems in the above prior art that simply applying images for measurement cannot detect subtle abnormalities during the laser grinding process, and there is a lack of effective associated control for the grinding process, resulting in insufficiently high-quality grinding. By further analyzing the sparks in the images and controlling the association, the role of image acquisition in the control process is improved, the grinding quality can be effectively improved, and effective data feedback can be provided to relevant technical personnel for timely tracing of quality problems, and it can be adapted to the processing control of planar or shaped diamond composite sheets.

[0006] To achieve the above object, the present invention provides a laser grinding control system for diamond composite sheets, including a circular sheet-shaped grinding member, a rotary processing platform for placing the grinding member, a laser head and a height measuring probe located above the rotary processing platform. The rotary processing platform rotates during laser grinding to adjust the grinding position. The laser grinding control system for diamond composite sheets further includes a zoning module, a monitoring module, a control module and a data feedback module; wherein the zoning module is electrically connected to the height measuring probe and is used to divide the processing surface of the grinding member into several annular grinding zones based on the height distribution data collected by the height measuring probe;

[0007] The monitoring module collects spark images during the grinding of the processing surface, as well as records the collection position and collection time; the control module is respectively connected to the zoning module and the monitoring module. The control module controls the laser head to perform primary laser grinding with an initial removal amount, and determines the removal amount of each grinding zone in subsequent laser grinding processes based on the collection data of the monitoring module during the primary laser grinding process; the data feedback module is respectively connected to the monitoring module and the zoning module. The data feedback module determines whether the abnormal spark during grinding is caused by height difference based on the collection data of the monitoring module, and records and feeds back the determination result and the corresponding collection data.

[0008] As a preferred technical solution of the laser grinding control system for diamond composite sheets, the zoning module specifically executes the following processes to complete the division of the grinding zones:

[0009] Obtain the height distribution data of the processing surface of the grinding member through the height measuring probe. The height distribution data includes the height values of multiple measurement points based on the center of the grinding member;

[0010] Generate several continuous concentric circles expanding outward from the center of the circle. All the concentric circles cover the effective processing area of the processing surface of the grinding member;

[0011] Calculate the average height of the measurement points within each concentric circle as the ring height value of the circle;

[0012] Perform gradient determination on the ring height values of the continuous circles:

[0013] If the ring height values of continuous N circles are all higher than the preset high threshold, mark the area of the continuous circles as a high grinding area;

[0014] If the ring height values of continuous M circles are all lower than the preset low threshold, mark the area of the continuous circles as a low grinding area;

[0015] Mark the continuous circle area located between the high grinding area and the low grinding area as a slope grinding area.

[0016] As a preferred technical solution of the laser grinding control system for diamond composite sheets, during the laser grinding process, the monitoring module captures the spark splash images in real time at a sampling rate synchronized with the laser pulse frequency through a high-speed industrial camera, and associates and records the processing timestamp corresponding to the image, the polar coordinate position of the laser focus on the grinding piece, and the grinding zone number to which it belongs.

[0017] As a preferred technical solution of the laser grinding control system for diamond composite sheets, the monitoring module is further configured to identify whether the sparks are abnormal, and the specific identification process includes:

[0018] Perform on a single-frame spark image: grayscale processing and background noise filtering, and extract the effective spark area;

[0019] Respectively determine the projection area ratio of the spark area in the vertical direction, the maximum spark cluster diameter, and the spark distribution dispersion σ. If any one of the three parameters exceeds the corresponding standard range, it is determined that the spark is abnormal.

[0020] As a preferred technical solution of the laser grinding control system for diamond composite sheets, the specific process of the monitoring module for determining the projection area ratio of the spark area in the vertical direction and the maximum spark cluster diameter includes:

[0021] Determine the projection area S1 of the spark on the vertical plane;

[0022] Determine the minimum circumscribed circle area S2 of the spark pixel group, take the ratio of S1 to S2 as the projection area ratio of the spark area in the vertical direction, and take the diameter of the minimum circumscribed circle as the maximum spark cluster diameter.

[0023] As a preferred technical solution of the laser grinding control system for diamond composite sheets, the monitoring module determines the spark distribution dispersion σ based on the following calculation method:

[0024] , where N represents the total number of spark particles in a single-frame image, di represents the distance from the i-th spark particle to the center of the spark pixel group, and d represents the average distance from all spark particles to the center of the spark pixel group.

[0025] As a preferred technical solution of the laser grinding control system for diamond composite sheets, after the initial laser grinding is performed with the initial removal amount, in response to no spark abnormality in each grinding zone, the subsequent grinding is performed in sequence with the preset standard removal amount. In response to spark abnormality in each grinding zone, the preset standard removal amount for the subsequent grinding is reduced, and the reduction amount is determined based on the acquisition data of the grinding zone with the maximum degree of abnormality.

[0026] As a preferred technical solution of the laser grinding control system for diamond composite sheets, the data feedback module responds to the existence of abnormal sparks, counts the distribution of abnormal sparks in the grinding area during the first laser grinding, and responds to the number of polar coordinate positions corresponding to the abnormal sparks being greater than the preset number of positions and only existing in any one of the high grinding area, low grinding area or slope grinding area, determines that it is caused by height difference, and records and feeds back the corresponding determination result and the corresponding collected data.

[0027] As a preferred technical solution of the laser grinding control system for diamond composite sheets, the initial removal amount in the first laser grinding set by the control module is greater than the standard removal amount preset for each subsequent grinding.

[0028] As a preferred technical solution of the laser grinding control system for diamond composite sheets, the set initial removal amount by the control module is 0.1 mm.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows. Through the circular ring zoning mode of the zoning module, the subsequent control and data feedback processes can be optimized. First of all, the zoning based on elevation enables various types of zones to have their own unique characteristics, namely elevation characteristics, and this characteristic is a characteristic that can cause differences in grinding quality and is easy to discover during the laser grinding process. Through the identification and analysis of the monitoring module after zoning based on this characteristic, and the control optimization based on the identification and analysis results, the optimization of the removal amount can be more effective based on the short board in the zone. And on this basis, the data feedback module can discover in time whether there is an abnormal spark caused by elevation difference, which can effectively improve the grinding quality and give effective data feedback to relevant technicians for timely traceability of quality problems, and can adapt to the processing control of flat or special-shaped diamond composite sheets.

[0030] Furthermore, the present invention realizes the quantification of spark parameters and abnormal analysis through the spark collection and abnormal identification of the monitoring module, converts the stability of laser grinding into the stability of sparks for collection and analysis, and improves the timeliness and effectiveness of discovery. Brief Description of the Drawings

[0031] Figure 1 It is the structural block diagram of the laser grinding control system for diamond composite sheets according to the embodiment of the present invention;

[0032] Figure 2 It is the zoning schematic diagram of the zoning module according to the embodiment of the present invention;

[0033] In the figure: 1. High grinding area; 2. Low grinding area; 3. Slope grinding area. Detailed Embodiment

[0034] In order to make the objectives and advantages of the present invention more clear and understandable, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and do not limit the protection scope of the present invention.

[0036] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0037] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Please refer to Figure 1 As shown, they are respectively the structural block diagrams of the laser grinding control system for diamond composite sheets in the embodiments of the present invention. The laser grinding control system for diamond composite sheets includes a circular sheet-shaped grinding member, a rotary processing platform for placing the grinding member, a laser head and a height measuring probe located above the rotary processing platform. The rotary processing platform rotates during laser grinding to adjust the grinding position. The laser grinding control system for diamond composite sheets further includes a zoning module, a monitoring module, a control module, and a data feedback module; wherein the zoning module is electrically connected to the height measuring probe and is used to divide the processing surface of the grinding member into several annular grinding zones based on the height distribution data collected by the height measuring probe.

[0039] The monitoring module collects the spark images during the grinding of the machined surface, as well as records the collection position and collection time; the control module is respectively connected to the zoning module and the monitoring module. The control module controls the laser head to perform the initial laser grinding with the initial removal amount, and determines the removal amount of each grinding area in subsequent laser grinding processes based on the collection data of the monitoring module during the initial laser grinding process (in this embodiment, after the initial diamond grinding, the grinding surface of the diamond composite sheet is close to a plane. Therefore, in subsequent laser grinding processes, the removal amount of each grinding area in each laser grinding is the same. The determination of the removal amount is only determined for each time, not separately for each grinding area); the data feedback module is respectively connected to the monitoring module and the zoning module. The data feedback module determines whether the spark abnormality during grinding is caused by height difference based on the collection data of the monitoring module, and records and feeds back the determination result and the corresponding collection data.

[0040] In the above embodiment, through the circular zoning mode of the zoning module, the subsequent control and data feedback processes can be optimized. First, the zoning based on elevation enables various types of zones to have their own unique characteristics, that is, elevation characteristics. And this characteristic is a characteristic that can cause differences in grinding quality and is easy to discover during the laser grinding process. Through the identification and analysis of the monitoring module after zoning based on this characteristic, and the control optimization based on the identification and analysis results, the optimization of the removal amount can be more effectively carried out based on the short board in the zone. And on this basis, the data feedback module can timely discover whether the spark abnormality is caused by elevation difference, which can effectively improve the grinding quality and give effective data feedback to relevant technicians for timely tracing of quality problems, and can adapt to the processing control of flat or shaped diamond composite sheets.

[0041] On the basis of the above effects, through the spark collection and abnormality identification of the monitoring module, the quantification of spark parameters and abnormality analysis are realized. The stability of laser grinding is converted into the stability of sparks for collection and analysis, improving the timeliness and effectiveness of discovery.

[0042] Please refer to Figure 2 As shown, the zoning module specifically executes the following processes to complete the division of the grinding areas:

[0043] Obtain the height distribution data of the machined surface of the grinding part through the height measuring probe. The height distribution data includes the height values of multiple measurement points based on the center of the grinding part.

[0044] Generate a number of continuous concentric circles by expanding outward from the center of the circle. All concentric circles cover the effective machining area of the machined surface of the grinding part.

[0045] Calculate the average height of the measurement points within each concentric circle as the ring height value of the circle.

[0046] Perform gradient determination on the ring height values of consecutive rings:

[0047] If the ring height values of N consecutive rings are all higher than the preset high threshold, mark the area of these consecutive rings as high grinding area 1;

[0048] If the ring height values of M consecutive rings are all lower than the preset low threshold, mark the area of these consecutive rings as low grinding area 2;

[0049] Mark the area of consecutive rings located between the high grinding area and the low grinding area as slope grinding area 3. The partitioning module divides the processing surface of the grinding part into concentric circular grinding areas (high / low / slope areas) based on the height distribution data obtained by the height measuring probe. Under the premise of keeping the overall rotary processing mode unchanged, the data feedback module counts the distribution density of spark anomalies in the grinding area. If the abnormal points are concentrated in a single type of grinding area, it is directly attributed to the elevation difference; otherwise, the interference of elevation factors is excluded to improve the fault diagnosis efficiency. Specifically, during the laser grinding process, the parameter switching between too high and too low positions, as well as the laser grinding of the slope surface, are prone to differences in cutting degree. Through the division of cutting parameters, it can be ensured that this feature can be discovered through the effect parameters of the spark and further parameter optimization can be carried out. The height collected in this embodiment is the thickness of the diamond composite sheet. The preset high threshold and the preset low threshold are determined based on the size of the diamond composite sheet. In this embodiment, the preset high threshold is 8 mm and the preset low threshold is 5 mm.

[0050] Specifically, during the laser grinding process, the monitoring module uses a high-speed industrial camera to capture the spark splash images in real time at a sampling rate synchronized with the laser pulse frequency, and associates and records the processing timestamp corresponding to the image, the polar coordinate position of the laser focus on the grinding part, and the grinding area number to which it belongs.

[0051] Specifically, the monitoring module is also configured to identify whether the spark is abnormal. The specific process of identification includes:

[0052] Perform on a single-frame spark image: grayscale processing and background noise filtering, and extract the effective spark area;

[0053] The projection area ratio of the spark region in the vertical direction, the maximum spark cluster diameter, and the spark distribution dispersion σ are determined respectively. If any one of the three parameters exceeds the corresponding standard range (obtained from the experimental statistics of a limited number of times for the above parameters based on standard diamond composite inserts), it is determined that the spark is abnormal. Specifically, in this embodiment, (the thickness of the diamond composite insert in this embodiment is 5 mm), the standard range of the projection area ratio obtained by experimental calibration is (70.5%, 80.2%), the standard range of the maximum spark cluster diameter is (1.25 mm, 2.02 mm), and the standard range of the distribution dispersion is (0.62 mm, 1.33 mm).

[0054] Specifically, the determination process of the projection area ratio and the maximum spark cluster diameter of the spark region by the monitoring module specifically includes:

[0055] Determine the projection area S1 of the spark on the vertical plane;

[0056] Determine the area S2 of the minimum circumscribed circle of the spark pixel group, take the ratio of S1 to S2 as the projection area ratio of the spark region in the vertical direction, and take the diameter of the minimum circumscribed circle as the maximum spark cluster diameter.

[0057] Specifically, the monitoring module determines the spark distribution dispersion σ based on the following calculation method:

[0058] , where N represents the total number of spark particles in a single-frame image, di represents the distance from the i-th spark particle to the center of the spark pixel group, and d represents the average distance from all spark particles to the center of the spark pixel group.

[0059] Specifically, the high-speed camera is strictly synchronized with the laser pulse, combined with the recording of the polar coordinate position and the grinding area number, to ensure that each frame of spark image is accurately mapped to the physical position of the processing surface. This mechanism provides a spatial reference for the correlation analysis of spark abnormality and elevation difference. The projection area ratio reflects the concentration of spark energy, and exceeding the threshold indicates local energy overload; the maximum spark cluster diameter locates the abnormal sputtering range and identifies material inhomogeneity or impurity interference; the dispersion σ quantifies the uniformity of spark distribution. A too low σ value indicates spark aggregation (corresponding to surface protrusions), and a too high value indicates spark dispersion (corresponding to material defects). The three work together to break through the limitations of traditional visual inspection and convert the spark state into programmable quantitative parameters.

[0060] Specifically, after the initial laser grinding is performed with the initial removal amount, in response to the absence of abnormal sparks in each grinding area, the subsequent grinding operations are sequentially performed with a preset standard removal amount. In response to the presence of abnormal sparks in each grinding area, the preset standard removal amount for the subsequent grinding operations is reduced. The reduction amount is determined based on the collected data of the grinding area with the largest degree of abnormality (corresponding to the deviation degree of the projection area ratio, the maximum spark cluster diameter, and the overall spark distribution dispersion σ). Specifically, the reduction operation is carried out in three degrees: a reduction of 0.1 mm (large deviation degree), a reduction of 0.05 mm (moderate deviation degree), and a reduction of 0.02 mm (small deviation degree), corresponding to different deviation degrees of the projection area ratio, the maximum spark cluster diameter, and the overall spark distribution dispersion σ. The division of the deviation degree should be equally divided into three ranges based on historical data, which is an existing statistical technique and will not be elaborated in this embodiment.

[0061] Specifically, in response to the presence of abnormal sparks, the data feedback module counts the distribution of abnormal sparks in the grinding area during the initial laser grinding. In response to the number of polar coordinate positions corresponding to the abnormal sparks being greater than the preset number of positions (4 in this embodiment, which can be adjusted according to the actual working conditions) and only existing in any one of the high grinding area, the low grinding area, or the slope grinding area, it is determined that it is caused by a height difference, and the corresponding determination result and the corresponding collected data are recorded and fed back.

[0062] Specifically, the initial removal amount in the initial laser grinding set by the control module is greater than the preset standard removal amount for the subsequent grinding operations.

[0063] Specifically, in this embodiment, the initial removal amount set by the control module is 0.1 mm.

[0064] In detail, in the above embodiment, the dynamic removal amount regulation:

[0065] The initial removal amount of 0.1 mm quickly exposes the elevation anomaly area during the initial grinding;

[0066] The removal amount reduction mechanism in the anomaly area prevents microcracks caused by spark overload, while maintaining the standard removal amount in the non-anomaly area to ensure the processing efficiency.

[0067] Elevation attribution determination:

[0068] When the abnormal spark points are concentrated in a single type of grinding area and exceed the preset number of positions, it is determined that it is caused by a height difference. This rule accurately distinguishes elevation anomalies from random interferences and reduces the misjudgment rate.

[0069] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of apparatuses, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a segment of a program, or a portion of code that contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions noted in the blocks may occur in a different order than noted in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and combinations of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based apparatus that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0070] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.

[0071] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A laser grinding control system for a diamond composite sheet, comprising a circular sheet-shaped grinding member, a rotary processing platform for placing the grinding member, a laser head and a height measuring probe located above the rotary processing platform, and the rotary processing platform rotates during laser grinding to adjust the grinding position, characterized in that The laser grinding control system for diamond composite inserts includes: A zoning module, electrically connected to the height measuring probe, for dividing the processing surface of the grinding piece into several annular grinding zones based on the height distribution data collected by the height measuring probe; A monitoring module, which collects spark images during the grinding of the processing surface, and records the collection position and collection time; A control module, connected to the zoning module and the monitoring module respectively. The control module controls the laser head to perform primary laser grinding with an initial removal amount, and determines the removal amount of each grinding zone in subsequent laser grinding processes based on the collection data of the monitoring module during the primary laser grinding process; A data feedback module, connected to the monitoring module and the zoning module respectively. The data feedback module determines whether the abnormal spark during grinding is caused by height difference based on the collection data of the monitoring module, and records and feeds back the determination result and the corresponding collection data.

2. The laser grinding control system for diamond composite sheets according to claim 1, characterized in that, The zoning module specifically executes the following processes to complete the division of the grinding zones: Obtain the height distribution data of the processing surface of the grinding piece through the height measuring probe. The height distribution data includes the height values of multiple measurement points based on the center of the grinding piece; Generate several continuous concentric rings by expanding outward from the center of the circle. All concentric rings cover the effective processing area of the processing surface of the grinding piece; Calculate the average height of the measurement points within each concentric ring as the ring height value of the ring; Perform gradient determination on the ring height values of the continuous rings: If the ring height values of N consecutive rings are all higher than the preset high threshold, mark the area of the continuous rings as a high grinding area; If the ring height values of M consecutive rings are all lower than the preset low threshold, mark the area of the continuous rings as a low grinding area; Mark the continuous ring area located between the high grinding area and the low grinding area as a slope grinding area.

3. The laser grinding control system for diamond composite sheets according to claim 1, wherein, During the laser grinding process, the monitoring module uses a high-speed industrial camera to capture spark splash images in real time at a sampling rate synchronized with the laser pulse frequency, and associates and records the processing timestamp corresponding to the image, the polar coordinate position of the laser focus on the grinding piece, and the number of the grinding zone to which it belongs.

4. The laser grinding control system for diamond composite sheets according to claim 1, wherein The monitoring module is also configured to identify whether the spark is abnormal. The specific identification process includes: Perform on a single-frame spark image: grayscale processing and background noise filtering, and extract the effective spark area; Respectively determine the projection area ratio of the spark area in the vertical direction, the diameter of the largest spark cluster, and the spark distribution dispersion σ. If any of the three parameters exceeds the corresponding standard range, it is determined that the spark is abnormal.

5. The laser grinding control system for diamond composite sheets according to claim 4, wherein The process for the monitoring module to determine the projection area ratio of the spark area in the vertical direction and the diameter of the largest spark cluster specifically includes: Determine the projection area S1 of the spark on the vertical plane; Determine the minimum circumscribed circle area S2 of the spark pixel group, take the ratio of S1 to S2 as the projection area ratio of the spark area in the vertical direction, and take the diameter of the minimum circumscribed circle as the diameter of the largest spark cluster.

6. The laser grinding control system for diamond composite sheets according to claim 5, wherein, The monitoring module determines the spark distribution dispersion σ based on the following calculation method: , where N represents the total number of spark particles in a single-frame image, di represents the distance from the i-th spark particle to the center of the spark pixel group, and d represents the average distance from all spark particles to the center of the spark pixel group.

7. The laser grinding control system for diamond composite sheets according to claim 4, characterized in that, After the initial laser grinding is performed with the initial removal amount, in response to the absence of spark abnormalities in each grinding area, subsequent grindings are sequentially performed with a preset standard removal amount. In response to the presence of spark abnormalities in each grinding area, a reduction operation is performed on the preset standard removal amount for subsequent grindings, and the reduction amount is determined based on the collected data of the grinding area with the greatest degree of abnormality.

8. The laser grinding control system for diamond composite inserts according to claim 1, wherein In response to the presence of spark abnormalities, the data feedback module counts the distribution of spark abnormalities in the grinding area during the initial laser grinding. In response to the number of polar coordinate positions corresponding to the spark abnormalities being greater than the preset number of positions and only existing in any one of the high grinding area, the low grinding area, or the slope grinding area, it is determined that it is caused by a height difference, and the corresponding determination result and the corresponding collected data are recorded and fed back.

9. The laser grinding control system for diamond composite sheets according to claim 7, wherein The initial removal amount in the initial laser grinding set by the control module is greater than the preset standard removal amount for subsequent grindings.

10. The laser grinding control system for diamond composite sheets according to claim 9, characterized in that, The initial removal amount set by the control module is 0.1 mm.

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