Precise sheet metal machining control system and method of high-precision laser combined machining machine and high-precision laser combined machining machine

Abstract

The invention relates to the technical field of machining control, and particularly discloses a precise sheet metal machining control system and method of a high-precision laser combined machining machine and the high-precision laser combined machining machine. An intelligent and closed-loop quality assurance system is constructed for the high-precision laser combined machining machine to machine precise metal plates, an optimization adjustment module obtains machining parameters in real time and dynamically adjusts the machining parameters, it is ensured that the machining process is precise and controllable, and the machining precision and efficiency are remarkably improved; the processing early warning module monitors the compensation adjustment effect in real time, early warns potential risks in time, avoids batch quality accidents, and guarantees the production stability; the machining pre-adjusting module is based on finished product data analysis, pre-judges process problems in advance, optimizes parameters and achieves preventive maintenance, the three parts are combined, the defective rate is reduced, the equipment response speed is increased, and the machining process is more efficient, stable and reliable.

Description

Technical Field

[0001] The present invention relates to the field of processing control technology, and in particular to a precision sheet metal processing control system and method of a high-precision laser composite processing machine, and the high-precision laser composite processing machine. Background Art

[0002] In modern manufacturing, high-precision laser composite processing machines have become indispensable key equipment in the field of precision sheet metal processing due to their efficient and accurate processing capabilities. With the advent of the Industrial 4.0 era and the rapid development of intelligent manufacturing technology, the market has put forward more stringent requirements on the processing accuracy, quality stability and production efficiency of precision sheet metal parts.

[0003] For example, the invention patent with the announcement number CN116339238B announces a beam motion control method for five-axis laser processing equipment with independent beam scanning. In order to solve the technical problem that when multi-axis laser processing equipment is processed, if the motion pattern of the laser beam is not circular, it will cause misaligned processing and cause parts to be scrapped, a beam motion control method for five-axis laser processing equipment with independent beam scanning is provided. By analyzing the motion structure and connection relationship of the five-axis machine tool, the motion trajectory of the beam scanning device is decomposed into each motion axis, and the position of the beam scanning device relative to the workpiece under the combined action of each axis is obtained, and then a local scanning coordinate system under the current position is established.

[0004] For example, the invention patent with announcement number CN110673541B announces a method for repeated positioning control of a laser micro-texturing machine tool, which includes the following steps: first, obtaining the configuration information of the machine tool worktable, the configuration information including the motion trajectory, speed and acceleration of the machine tool worktable; establishing a mathematical model of the machine tool transmission link, and calculating the ideal values of the speed and acceleration of each servo motor in combination with the configuration information; reading the actual values of the speed and acceleration of each servo motor and comparing them with the ideal values to obtain the setting parameters of the composite feedforward compensation of speed and acceleration, and obtain the feedforward compensation variable; obtaining the feedback control variable; the composite feedforward compensation variable and the feedback control variable form the control variable; wherein, the machine tool worktable is used to clamp the workpiece to be processed; the machine tool worktable can move horizontally along the X-axis and Y-axis and rotate around the θ-axis relative to the machine tool under the drive of the servo motor group.

[0005] However, in the process of implementing the embodiments of the present application, the present application discovered that the above-mentioned technology has at least the following technical problems: Although the existing technical solutions have improved the processing accuracy and stability to a certain extent, when dealing with complex processing tasks or facing high performance requirements, it is difficult to accurately capture subtle abnormalities and potential risks in the processing process, resulting in the early warning mechanism may not be able to issue alarms and perform control in a timely and accurate manner at critical moments, thereby affecting the further improvement of processing quality and the stable guarantee of production efficiency. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention provides a precision sheet metal processing control system and method for a high-precision laser composite processing machine, and a high-precision laser composite processing machine, which can effectively solve the problems involved in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: The first aspect of the present invention provides a precision sheet metal processing control system for a high-precision laser compound processing machine, including: a processing judgment module, which is used to determine whether the precision sheet metal is processed by the high-precision laser compound processing machine by collecting and analyzing the position image parameters of the precision sheet metal; an optimization and adjustment module, which is used to process the precision sheet metal by the high-precision laser compound processing machine, obtain and evaluate the processing process parameters of the high-precision laser compound processing machine, and thus optimize the control and compensation adjustment of the processing process of the high-precision laser compound processing machine; a processing early warning module, which is used to monitor the compensation adjustment process of the high-precision laser compound processing machine, and determine whether to issue an early warning for the processing process of the high-precision laser compound processing machine; a processing pre-adjustment module, which is used to perform data analysis on the precision sheet metal that has been processed, and thus pre-adjust the processing process of the high-precision laser compound processing machine.

[0008] As a further solution, the processing process of the high-precision laser composite processing machine is optimized, controlled and compensated, specifically: evaluating the processing parameters of the high-precision laser composite processing machine within the detection cycle, obtaining the processing quality index of the high-precision laser composite processing machine within the detection cycle, and comparing it with the processing quality threshold; if the processing quality index of the high-precision laser composite processing machine within the detection cycle is greater than or equal to the processing quality threshold, then optimizing the processing process of the high-precision laser composite processing machine. The specific optimization control process is: obtaining the processing quality change rate of the high-precision laser composite processing machine within the detection cycle, and comparing it with the defined processing quality change rate; if the processing quality change rate of the high-precision laser composite processing machine within the detection cycle is less than the defined processing quality change rate, then matching a speed reduction coefficient based on the processing quality change rate, and reducing the cutting speed of the high-precision laser composite processing machine in the next adjacent detection cycle for optimization control; if the processing quality change rate of the high-precision laser composite processing machine within the detection cycle is greater than or equal to the defined processing quality change rate, then not reducing the cutting speed of the high-precision laser composite processing machine in the next adjacent detection cycle for optimization control.

[0009] As a further solution, the processing process of the high-precision laser composite processing machine is optimized, controlled and compensated. The specific compensation adjustment process is: if the processing quality index of the high-precision laser composite processing machine within the detection period is less than the processing quality threshold, the processing process of the high-precision laser composite processing machine is compensated and adjusted. The specific compensation adjustment process is: the basic compensation depth and basic compensation laser intensity corresponding to each processing quality deviation factor are stored in the control database, the processing quality deviation factor of the high-precision laser composite processing machine within the detection period is obtained, and the absolute difference processing is performed in turn with each processing quality deviation factor stored in the control database to obtain each dynamic difference, and the dynamic differences are sorted in order from small to large, and the processing quality deviation factor corresponding to the dynamic difference ranked first is extracted, and the basic compensation depth and basic compensation laser intensity corresponding to the processing quality deviation factor are marked as the basic compensation depth and basic compensation laser intensity of the high-precision laser composite processing machine. At the same time, the basic compensation depth and basic compensation laser intensity of the high-precision laser composite processing machine are corrected based on the dynamic difference ranked first, so as to obtain the target compensation depth and target compensation laser of the high-precision laser composite processing machine. intensity, thereby compensating and adjusting the processing of the high-precision laser composite processing machine; at the same time, according to the processing quality deviation factor of the high-precision laser composite processing machine within the detection period, the duration corresponding to the detection period is shortened and adjusted; the processing quality index of the high-precision laser composite processing machine within the detection period, the specific analysis process is as follows: the processing process parameters of the high-precision laser composite processing machine within the detection period include the average laser power density of the high-precision laser composite processing machine within the detection period, the average laser beam divergence angle of the high-precision laser composite processing machine within the detection period, and the average focal point diameter of the high-precision laser composite processing machine within the detection period; quantify the influence of the proportional relationship between the average laser power density and the defined average laser power density on the processing quality index, the influence of the proportional relationship between the average laser beam divergence angle and the defined average laser beam divergence angle on the processing quality index, and the influence of the proportional relationship between the average focal point diameter and the defined average focal point diameter on the processing quality index, and couple each influence degree to obtain the processing quality index; the processing quality index of the high-precision laser composite processing machine within the detection period is used to quantify the processing depth accuracy of the high-precision laser composite processing machine within the detection period.

[0010] As a further solution, it is determined whether to issue an early warning for the processing of the high-precision laser composite processing machine. The specific determination process is: monitor the compensation adjustment process of the high-precision laser composite processing machine, analyze the compensation optimization coefficient of the high-precision laser composite processing machine in real time, and compare it with the compensation optimization threshold. If the compensation optimization coefficient of the high-precision laser composite processing machine is greater than or equal to the compensation optimization threshold, it is determined that no early warning is issued for the processing of the high-precision laser composite processing machine. At the same time, based on the target compensation depth and target compensation laser intensity of the high-precision laser composite processing machine, the laser depth and laser intensity of the high-precision laser composite processing machine in the next adjacent detection cycle are estimated and configured. Based on the compensation optimization coefficient of the high-precision laser composite processing machine, the cutting speed of the high-precision laser composite processing machine in the next adjacent detection cycle is increased and optimized. If the compensation optimization coefficient of the high-precision laser composite processing machine is less than the compensation optimization threshold, it is determined that an early warning is issued for the processing of the high-precision laser composite processing machine. The specific early warning process is: obtain the compliance index of the precision sheet metal and compare it with the compliance threshold. If the compliance index of the precision sheet metal is greater than or equal to the compliance threshold, based on The compliance index of the precision sheet metal is optimized to reduce the compensation optimization threshold. If the compliance index of the precision sheet metal is less than the compliance threshold, the precision sheet metal abnormality level is matched based on the compliance index of the precision sheet metal, thereby issuing an early warning for the processing process of the high-precision laser composite processing machine, and at the same time setting the cutting speed of the high-precision laser composite processing machine to the minimum cutting speed; the compensation optimization coefficient of the high-precision laser composite processing machine, the specific analysis process is as follows: obtaining the processing quality index growth rate of the high-precision laser composite processing machine, the laser intensity deviation value of the high-precision laser composite processing machine, and the laser depth deviation value of the high-precision laser composite processing machine; quantifying the influence of the proportional relationship between the processing quality index growth rate and the defined processing quality index growth rate on the compensation optimization coefficient, the influence of the proportional relationship between the laser intensity deviation value and the defined laser intensity deviation value on the compensation optimization coefficient, and the influence of the proportional relationship between the laser depth deviation value and the defined laser depth deviation value on the compensation optimization coefficient, and summarizing the various influence degrees to obtain the compensation optimization coefficient; the compensation optimization coefficient of the high-precision laser composite processing machine is used to quantify the compensation optimization degree of the high-precision laser composite processing machine.

[0011] As a further solution, the processing process of the high-precision laser composite processing machine is pre-adjusted, specifically: obtaining the compliance index of the processed precision sheet metal, and performing difference processing with the compliance threshold, performing ratio processing on the processing result and the compliance threshold, and finally obtaining the compliance margin of the precision sheet metal, and comparing it with the defined compliance margin; if the compliance margin of the precision sheet metal is greater than or equal to the defined compliance margin, the processing process of the high-precision laser composite processing machine is not pre-adjusted, if the compliance margin of the precision sheet metal is less than the defined compliance margin, the processing process of the high-precision laser composite processing machine is pre-adjusted, and the specific pre-adjustment process is: according to the compliance margin of the precision sheet metal, the cutting speed of the high-precision laser composite processing machine is preset to be decelerated, and at the same time, the data acquisition frequency of the high-precision laser composite processing machine is preset to be increased.

[0012] The second aspect of the present invention provides a precision sheet metal processing control method for a high-precision laser compound processing machine, comprising: step one, for collecting and analyzing position image parameters of the precision sheet metal, thereby determining whether the precision sheet metal is processed by the high-precision laser compound processing machine; step two, processing the precision sheet metal by the high-precision laser compound processing machine, obtaining and evaluating the processing process parameters of the high-precision laser compound processing machine, thereby optimizing the control and compensation adjustment of the processing process of the high-precision laser compound processing machine; step three, monitoring the compensation adjustment process of the high-precision laser compound processing machine, and determining whether to issue an early warning for the processing process of the high-precision laser compound processing machine; step four, performing data analysis on the processed precision sheet metal, thereby pre-adjusting the processing process of the high-precision laser compound processing machine.

[0013] The third aspect of the present invention provides a high-precision laser composite processing machine with a precision sheet metal processing control system such as a high-precision laser composite processing machine, including: a laser cutting module for automatic focusing and automatic cutting height tracking, and real-time adjustment of the laser focus position, cutting height and laser intensity according to the different thicknesses and processing requirements of the processing materials; a visual inspection module for using CCD camera technology to perform high-precision visual inspection of the processed precision sheet metal, thereby obtaining processing information of the precision sheet metal; a control module for adjusting the control processing strategy.

[0014] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0015] (1) The present invention provides a precision sheet metal processing control system and method for a high-precision laser composite processing machine and a high-precision laser composite processing machine. The processing judgment module, the optimization and adjustment module, the processing warning module and the processing pre-adjustment module work together to build an intelligent, closed-loop quality assurance system for the high-precision laser composite processing machine to process precision sheet metal. The optimization and adjustment module obtains processing parameters in real time and adjusts them dynamically to ensure that the processing process is accurate and controllable, and significantly improves processing accuracy and efficiency; the processing warning module monitors the compensation and adjustment effects in real time, and promptly warns of potential risks, avoids batch quality accidents, and ensures production stability; the processing pre-adjustment module predicts process problems in advance and optimizes parameters based on finished product data analysis to achieve preventive maintenance. The combination of the three not only reduces the defective rate, but also improves equipment utilization and response speed, making the processing process more efficient, stable and reliable, and helping enterprises achieve high-quality and high-efficiency production of precision sheet metal.

[0016] (2) The present invention realizes the dynamic optimization of the processing process of the high-precision laser composite processing machine by accurately matching the processing quality deviation factor and the basic compensation parameter through the compensation adjustment mechanism, automatically calculates and sorts the dynamic difference, and preferentially selects the key deviation factor for targeted compensation, thereby effectively improving the processing accuracy and stability. At the same time, the detection cycle time is shortened and adjusted based on the deviation factor, further enhancing the real-time and response speed of quality monitoring, and reducing the generation of defective products. This mechanism not only improves the processing efficiency and material utilization rate, but also reduces the cost of manual intervention, ensuring the continuous stability of the quality of precision sheet metal processing.

[0017] (3) The present invention realizes intelligent early warning and dynamic optimization of the processing process of high-precision laser composite processing machines by real-time monitoring of the compensation optimization coefficient. When the coefficient meets the standard, the system automatically configures the laser parameters of the next cycle and increases the cutting speed to ensure processing efficiency and quality; if the coefficient is insufficient, the early warning is quickly activated, and the threshold is adjusted or the matching abnormal level is combined with the precision sheet metal compliance index, while the cutting speed is reduced to avoid the production of defective products. This mechanism not only enhances the controllability and stability of the processing process, but also reduces quality risks through preventive adjustments, improves production efficiency and material utilization, and ensures the high precision and consistency of precision sheet metal processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described with reference to the accompanying drawings. However, the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of system module connections of the present invention.

[0020] Figure 2 Schematic diagram of the method steps of the present invention.

[0021] Figure 3 This is a schematic diagram of determining when processing is started according to the present invention.

[0022] Figure 4 Schematic diagram of the processing control steps of the present invention. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] Reference Figure 1 As shown, the first aspect of the present invention provides a precision sheet metal processing control system for a high-precision laser composite processing machine, including: a processing judgment module, an optimization adjustment module, a processing early warning module, a processing pre-adjustment module and a control database.

[0025] The control database is used to store parameters involved in a precision sheet metal processing control system of a high-precision laser composite processing machine.

[0026] The processing judgment module is connected to the optimization and adjustment module, the optimization and adjustment module is respectively connected to the processing warning module and the processing pre-adjustment module, the processing warning module is connected to the processing pre-adjustment module, and the optimization and adjustment module, the processing warning module and the processing pre-adjustment module are all connected to the control database.

[0027] The high-precision laser composite processing machine is a modern processing device that integrates high-precision laser cutting, intelligent visual inspection, and advanced control technologies. The core of the machine is equipped with a 3-kilowatt high-precision fiber laser, which supports automatic focus adjustment and cutting height tracking, ensuring precise cutting across a wide range of sheet thicknesses. Furthermore, the built-in CCD visual inspection system, combined with AI intelligent algorithms, captures workpiece information in real time before processing and automatically corrects the origin and angle, significantly improving processing accuracy and consistency. The machine also utilizes a proprietary ELNC control system, combining high-performance hardware with high-speed bus technology to achieve efficient and high-precision motion control and processing. Furthermore, the machine supports multi-directional loading and unloading, features a scratch-resistant design for the material surface, and is equipped with a wealth of expansion capabilities, including unmanned automated production, MES system connectivity, and customized development. The high-precision laser composite processing machine is widely used in precision sheet metal processing applications such as server manufacturing, intelligent driving, medical equipment, and automotive parts. It aims to provide users with efficient, accurate, and flexible processing solutions to meet the demands of modern industry for high-quality and efficient production.

[0028] The processing judgment module is used to determine whether the precision sheet metal is processed by a high-precision laser composite processing machine by collecting and analyzing the position image parameters of the precision sheet metal; the above-mentioned position image parameters refer to the precision sheet metal photographed by an image acquisition device (such as a high-precision camera).

[0029] Determine whether to use high-precision laser composite processing machine to process precision sheet metal. The specific judgment process is as follows:

[0030] If there is no precision sheet metal, it is determined that the precision sheet metal will not be processed by the high-precision laser composite processing machine;

[0031] If there is precision sheet metal, the number of precision sheet metal processed is obtained. If the number of precision sheet metal processed is the first number, it is determined whether the placement area to which the current precision sheet metal belongs belongs to the reference placement area. If the placement area to which the current precision sheet metal belongs belongs to the reference placement area, it is determined that the precision sheet metal is processed by a high-precision laser composite processing machine. If the placement area to which the current precision sheet metal belongs does not belong to the reference placement area, the various reference holes of the precision sheet metal are obtained and analyzed according to the preset trajectory. If the result of obtaining and analyzing the various reference holes of the precision sheet metal within the defined number of cycles is not the first result, it is determined that the high-precision laser composite processing machine is not used. The processing machine processes the precision sheet metal and performs a single position abnormality warning. If the result of obtaining and analyzing each reference hole of the precision sheet metal within the defined number of cycles is the first result, it is determined that the precision sheet metal is processed by the high-precision laser composite processing machine; the above-mentioned first processing number refers to one, and the above-mentioned reference placement area refers to the placement area allowed for the precision sheet metal preset by relevant technical personnel and stored in the control database; use image processing software (such as Matrix Lab) to pre-process the position image parameters of the precision sheet metal, such as denoising and contrast enhancement, and then use the target detection algorithm (such as YOLO target detection algorithm) to identify the precision in the image The sheet metal is processed and marked, and then the logic judgment link is entered. If the target detection result is empty, that is, no precision sheet metal is detected, it is determined that "the precision sheet metal is not processed by the high-precision laser composite processing machine"; if it is detected, the number of precision sheet metals is counted to obtain the current processing number. If the number meets the expected "first processing number", the placement area is further determined. With the help of image processing technology (such as edge detection algorithm), the placement area of each precision sheet metal is determined and compared with the preset reference placement area. Finally, the result is output and early warning is issued. If the current placement area belongs to the reference placement area, it is determined that "the precision sheet metal is processed by the high-precision laser composite processing machine". If it does not belong to the category, it will be judged as "failed" and a single-position abnormality warning will be triggered. The single-position abnormality warning can be achieved through sound alarms, visual prompts (such as flashing indicator lights) or sending notifications to the management platform. At the same time, the time, location and detailed information of a single precision sheet metal abnormality event are recorded. The reference placement area is a pre-planned area range. Only when the precision sheet metal is placed in this specific area can it meet the conditions for processing by the high-precision laser composite processing machine. If the actual placement position deviates from the reference placement area or the precision sheet metal placement area partially overlaps with the reference placement area, it is judged as not belonging to the reference placement area.

[0032] The above-mentioned cyclic acquisition and analysis of each reference hole of the precision sheet metal according to the preset trajectory means that the CCD will search for the first reference hole according to the technician's preset trajectory (for example, a walking trajectory such as a 9-square grid). This search will also be based on the technician's preset range. If found, it will continue to search for the second reference hole. At the same time, the similarity between the actual data sets of the two reference holes and the reference data set will be verified through similarity algorithm analysis.

[0033] The above-mentioned actual data set refers to a set of attribute data of the reference hole, such as the center position point, etc., and the above-mentioned reference data set refers to a reference set of the actual data set.

[0034] The first result mentioned above means that all reference holes are found, and the similarity between the actual data set of each reference hole and the reference data set is greater than the defined similarity, where the defined similarity refers to the minimum allowable similarity value, which is determined by relevant technical personnel.

[0035] If the current number of precision sheet metals processed is the second processing number, it is determined whether the placement areas to which all the current precision sheet metals belong all belong to the reference placement area. If the current placement areas to which all the precision sheet metals belong all belong to the reference placement area, a precision sheet metal superposition determination is performed to determine whether each precision sheet metal is processed by a high-precision laser compound processing machine. If each precision sheet metal is not superimposed, it is determined to be processed by a high-precision laser compound processing machine. If each precision sheet metal is superimposed, it is determined not to be processed by a high-precision laser compound processing machine, and an abnormal superposition warning is issued.

[0036] If the placement areas to which all current precision sheet metals belong do not all belong to the reference placement area, a precision sheet metal superposition judgment is performed to determine whether each precision sheet metal is processed by a high-precision laser compound processing machine. If there is superposition among the precision sheet metals, it is determined that each precision sheet metal is not processed by a high-precision laser compound processing machine, and a superposition abnormality warning is issued. If the precision sheet metals do not overlap, several precision sheet metals corresponding to the placement areas that do not all belong to the reference placement area are marked as precision sheet metals to be detected, and the reference holes of each precision sheet metal to be detected are obtained and analyzed according to the preset trajectory. If the number of cycles is within the limit, the analysis of each precision sheet metal to be detected is obtained. If the result of measuring each reference hole of the precision sheet metal is not the second result, it is determined that each precision sheet metal is not processed by the high-precision laser composite processing machine, and a multi-position abnormality warning is issued. If within the defined number of cycles, the result of obtaining and analyzing each reference hole of each precision sheet metal to be tested is the second result, it is determined that each precision sheet metal is processed by the high-precision laser composite processing machine; the above-mentioned second processing number refers to more than one; the above-mentioned multi-position abnormality warning can be achieved through sound alarms, visual prompts (such as flashing indicator lights) or sending notifications to the management platform, and the time, location and detailed information of multiple precision sheet metal abnormal events are recorded at the same time.

[0037] The second result mentioned above means that all the reference holes of each precision sheet metal to be tested are found, and the similarity between the actual data set of each reference hole of each precision sheet metal to be tested and the reference data set is greater than the defined similarity, where the defined similarity refers to the minimum allowable similarity value, which is determined by relevant technical personnel.

[0038] Perform precision sheet metal superposition judgment, and the specific judgment process is: obtain the shape contour curve of each precision sheet metal, and compare it with the reference shape contour curve. If the overlap rate between the shape contour curve of each precision sheet metal and the reference shape contour curve is the defined overlap rate, then it is judged that each precision sheet metal is not superimposed; if the overlap rate between the shape contour curve of a certain precision sheet metal and the reference shape contour curve is not the defined overlap rate, then it is judged that each precision sheet metal is superimposed; the shape contour curves of the above-mentioned precision sheet metals can be obtained by image processing technology (such as edge detection algorithm) analysis, and the collected images are preprocessed using image processing software (such as Matrix Lab), including denoising, contrast enhancement and other operations to improve the accuracy of subsequent analysis, and the extracted shape contour curve of each precision sheet metal is compared with the reference shape contour curve pre-stored in the control database. A comparison is performed, and the overlap rate between the two is calculated, that is, the ratio of the overlapping area between the shape contour curve and the reference shape contour curve to the total area of the reference contour, so as to obtain the overlap rate. If the overlap rate between the shape contour curves of all precision sheet metals and the reference shape contour curves reaches the defined overlap rate pre-set in the control database, it is determined that each precision sheet metal is processed by a high-precision laser composite processing machine. If the overlap rate between the shape contour curve of any precision sheet metal and the reference shape contour curve does not reach the defined overlap rate, a superposition abnormality warning is triggered. The warning can be achieved through sound alarms, visual prompts (such as flashing indicator lights) or sending notifications to the management platform. At the same time, the time, location and detailed information of the superposition abnormality event are recorded for subsequent analysis and processing; the above-mentioned defined overlap rate refers to the minimum value allowed by the overlap rate.

[0039] The optimization and adjustment module is used to process precision sheet metal through a high-precision laser composite processing machine, obtain and evaluate the processing parameters of the high-precision laser composite processing machine, and thus optimize the control and compensation adjustment of the processing process of the high-precision laser composite processing machine.

[0040] In a specific embodiment, the present invention realizes dynamic optimization of the processing process of a high-precision laser composite processing machine by accurately matching the processing quality deviation factor and the basic compensation parameters through a compensation adjustment mechanism, automatically calculates and sorts dynamic differences, and prioritizes key deviation factors for targeted compensation, thereby effectively improving processing accuracy and stability. At the same time, the detection cycle duration is shortened and adjusted based on the deviation factor, further enhancing the real-time and response speed of quality monitoring and reducing the generation of defective products. This mechanism not only improves processing efficiency and material utilization, but also reduces the cost of manual intervention, ensuring the continuous stability of the quality of precision sheet metal processing.

[0041] Specifically, the processing process of the high-precision laser compound processing machine is optimized, controlled and compensated, specifically referring to: evaluating the processing parameters of the high-precision laser compound processing machine within the detection cycle, obtaining the processing quality index of the high-precision laser compound processing machine within the detection cycle, and comparing it with the processing quality threshold; the above-mentioned processing quality threshold represents the minimum value allowed by the processing quality index stored in the control database.

[0042] If the processing quality index of the high-precision laser compound processing machine within the detection cycle is greater than or equal to the processing quality threshold, the processing process of the high-precision laser compound processing machine is optimized and controlled. The specific optimization control process is: obtain the processing quality change rate of the high-precision laser compound processing machine within the detection cycle, and compare it with the defined processing quality change rate. If the processing quality change rate of the high-precision laser compound processing machine within the detection cycle is less than the defined processing quality change rate, match the speed reduction coefficient based on the processing quality change rate, and reduce the cutting speed of the high-precision laser compound processing machine in the next adjacent detection cycle for optimization control; if the processing quality change rate of the high-precision laser compound processing machine within the detection cycle is greater than or equal to the defined processing quality change rate, then the high-precision laser compound processing machine is not optimized. The cutting speed in the next adjacent detection cycle is reduced and optimized. The aforementioned processing quality change rate represents the degree of change in the processing quality index within the detection cycle. Specifically, the processing quality index of the high-precision laser composite processing machine at the end of the detection cycle is subtracted from the processing quality index of the high-precision laser composite processing machine at the beginning of the detection cycle, and the result is divided by the processing quality index of the high-precision laser composite processing machine at the beginning of the detection cycle to obtain the processing quality change rate. The aforementioned defined processing quality change rate is a benchmark parameter used to define the fluctuation trend of the processing quality index. It is extracted from the control database. If the processing quality change rate of the high-precision laser composite processing machine within the detection cycle is less than the defined processing quality change rate, it indicates that the processing quality index has shown a negative trend during this period. To maintain the stability of the laser control process, the cutting speed parameter needs to be adjusted downward. That is, the cutting speed is reduced to compensate for quality fluctuations, thereby ensuring the dynamic stability of the processing system.

[0043] The speed reduction coefficient represents the proportional value for reducing the cutting speed of the high-precision laser composite processing machine. The specific matching process is as follows: a mapping table of processing quality change rate-speed reduction coefficient is stored in the control database. The processing quality change rate of the high-precision laser composite processing machine within the detection cycle is directly queried in the control database to obtain the corresponding speed reduction coefficient. The speed reduction coefficient is then multiplied by the cutting speed of the high-precision laser composite processing machine in the next adjacent detection cycle. The product result is the cutting speed after the optimized control is reduced.

[0044] Specifically, the processing quality index of the high-precision laser compound processing machine during the detection period, the specific analysis process is: the processing parameters of the high-precision laser compound processing machine during the detection period include the average laser power density of the high-precision laser compound processing machine during the detection period, the average laser beam divergence angle of the high-precision laser compound processing machine during the detection period, and the average focal diameter of the high-precision laser compound processing machine during the detection period; it should be explained that the laser power density represents the average laser energy obtained per unit area of the precision sheet metal. The real-time laser power density of the high-precision laser compound processing machine during the detection period is averaged to obtain the average laser power density. The laser power density can be monitored by a laser power meter; the laser beam divergence angle, which quantifies the ratio of the rate at which the laser beam diameter expands with increasing propagation distance to the propagation distance, can be detected by a CCD camera. The real-time laser beam divergence angle of the high-precision laser composite processing machine within the detection period is averaged to obtain the average laser beam divergence angle; the focal diameter, which represents the minimum spot size of the laser beam after passing through the focusing system, is scanned by a CCD camera, and the spot diameter is determined by an edge detection algorithm (Canny operator). The real-time focal diameter of the high-precision laser composite processing machine within the detection period is averaged to obtain the average focal diameter.

[0045] The degree of influence of the proportional relationship between the average laser power density and the defined average laser power density on the processing quality index, the degree of influence of the proportional relationship between the average laser beam divergence angle and the defined average laser beam divergence angle on the processing quality index, and the degree of influence of the proportional relationship between the average focal point diameter and the defined average focal point diameter on the processing quality index are quantified, and each degree of influence is coupled to obtain the processing quality index.

[0046] It should be explained that as the cumulative operating time of high-precision laser composite processing machines increases, their key performance parameters will show a gradual attenuation trend. Specifically, the accumulated thermal effects of the optical system will lead to a decrease in laser power output efficiency. If the laser beam divergence angle is too large, the energy will be dispersed during transmission, reducing the actual power density acting on the material. The size of the average focal diameter directly determines the concentration of laser energy. The smaller the focal diameter, the more concentrated the energy, and the higher the peak power density at the focus. If the divergence angle increases or the focal diameter expands, the actual power density will decrease, resulting in a decrease in processing depth accuracy and, in turn, a decrease in the processing quality index.

[0047] The processing quality index of the high-precision laser composite processing machine within the detection cycle is used to quantify the processing depth accuracy of the high-precision laser composite processing machine within the detection cycle. The specific expression is:

[0048]

[0049] Wherein, HG(FTU, DER, KDR) is the processing quality index of the high-precision laser composite processing machine during the detection period, FTU is the average laser power density of the high-precision laser composite processing machine during the detection period, J_FTU is the defined average laser power density preset in the control database, DER is the average laser beam divergence angle of the high-precision laser composite processing machine during the detection period, J_DER is the defined average laser beam divergence angle preset in the control database, KDR is the average focal diameter of the high-precision laser composite processing machine during the detection period, J_KDR is the defined average focal diameter preset in the control database, hi1 is the weighted number of the average laser power density preset in the control database, hi2 is the weighted number of the average laser beam divergence angle preset in the control database, hi3 is the weighted number of the average focal diameter preset in the control database, and s is a constant.

[0050] The above definition of average laser power density indicates the minimum value allowed for the average laser power density; the above definition of average laser beam divergence angle indicates the maximum value allowed for the average laser beam divergence angle; the above definition of average focal diameter indicates the maximum value allowed for the average focal diameter.

[0051] The above-mentioned average laser power density weighted number is used to quantify the influence of the unit value of the average laser power density on the processing quality index; the above-mentioned average laser beam divergence angle weighted number is used to quantify the influence of the unit value of the average laser beam divergence angle on the processing quality index; the above-mentioned average focus diameter weighted number is used to quantify the influence of the unit value of the average focus diameter on the processing quality index. The control database stores the correspondence between the average laser power density, the average laser beam divergence angle and the average focus diameter and their corresponding weighted numbers. The average laser power density, the average laser beam divergence angle and the average focus diameter can be input into the control database, and the control database can retrieve the average laser power density weighted number, the average laser beam divergence angle weighted number and the average focus diameter weighted number, and the value range is between 0 and 1.

[0052] Furthermore, the processing process of the high-precision laser composite processing machine is optimized, controlled and compensated. The specific compensation adjustment process is as follows: if the processing quality index of the high-precision laser composite processing machine within the detection period is less than the processing quality threshold, the processing process of the high-precision laser composite processing machine is compensated and adjusted. The specific compensation adjustment process is as follows: the basic compensation depth and basic compensation laser intensity corresponding to each processing quality deviation factor are stored in the control database, the processing quality deviation factor of the high-precision laser composite processing machine within the detection period is obtained, and the absolute difference processing is performed in turn with each processing quality deviation factor stored in the control database to obtain each dynamic difference, and the dynamic differences are sorted in order from small to large, and the processing quality deviation factor corresponding to the dynamic difference ranked first is extracted, and the basic compensation depth and basic compensation laser intensity corresponding to the processing quality deviation factor are marked as the basic compensation depth and basic compensation laser intensity of the high-precision laser composite processing machine. At the same time, the basic compensation depth and basic compensation laser intensity of the high-precision laser composite processing machine are corrected based on the dynamic difference ranked first, so as to obtain the target compensation depth and target compensation laser intensity of the high-precision laser composite processing machine, thereby optimizing the processing quality deviation factor of the high-precision laser composite processing machine. The processing quality deviation factor is used to quantify the degree of deviation between the processing quality threshold and the processing quality index. The processing quality deviation factor of the high-precision laser composite processing machine during the detection period can be obtained by subtracting the processing quality index of the high-precision laser composite processing machine during the detection period from the processing quality threshold. The dynamic difference represents the absolute value of the difference between the processing quality deviation factor of the high-precision laser composite processing machine during the detection period and the processing quality deviation factor stored in the control database. The correction of the basic compensation depth and the basic compensation laser intensity of the high-precision laser composite processing machine based on the first-ranked dynamic difference refers to obtaining the difference processing result before the absolute value of the dynamic difference according to the first-ranked dynamic difference, and directly querying the corresponding compensation depth correction coefficient and compensation laser intensity correction coefficient from the control database, and multiplying the compensation depth correction coefficient by the basic compensation depth and the compensation laser intensity correction coefficient by the basic compensation laser intensity to obtain the target compensation depth and target compensation laser intensity. The compensation depth correction coefficient represents the proportional value of the correction to the basic compensation depth, and the compensation laser intensity correction coefficient represents the proportional value of the correction to the basic compensation laser intensity.

[0053] It should be explained that by sorting the differences from small to large, the correction direction of the compensation parameters (depth and laser intensity) is always aligned with the most significant deviation dimension of the current operating conditions, avoiding compensation failure caused by multi-factor coupling interference.

[0054] At the same time, according to the processing quality deviation factor of the high-precision laser compound processing machine within the detection cycle, the duration corresponding to the detection cycle is reduced and adjusted. The specific adjustment process is: the processing quality deviation factor-duration reduction coefficient mapping table is stored in the control database, and the processing quality deviation factor of the high-precision laser compound processing machine within the detection cycle is directly queried in the control database to obtain the corresponding duration reduction coefficient, and multiply it with the duration corresponding to the detection cycle. The processing result is the duration corresponding to the detection cycle after reduction and adjustment, where the duration reduction coefficient represents the proportional value of the reduction adjustment of the duration corresponding to the detection cycle.

[0055] The processing early warning module is used to monitor the compensation adjustment process of the high-precision laser compound processing machine and determine whether to issue an early warning for the processing process of the high-precision laser compound processing machine.

[0056] Specifically, it is determined whether to issue an early warning for the processing of the high-precision laser compound processing machine. The specific determination process is: monitor the compensation adjustment process of the high-precision laser compound processing machine, analyze the compensation optimization coefficient of the high-precision laser compound processing machine in real time, and compare it with the compensation optimization threshold. If the compensation optimization coefficient of the high-precision laser compound processing machine is greater than or equal to the compensation optimization threshold, it is determined that no early warning is issued for the processing of the high-precision laser compound processing machine. At the same time, based on the target compensation depth and target compensation laser intensity of the high-precision laser compound processing machine, the laser depth and laser intensity of the high-precision laser compound processing machine in the next adjacent detection cycle are estimated and configured. Based on the compensation optimization coefficient of the high-precision laser compound processing machine, the cutting speed of the high-precision laser compound processing machine in the next adjacent detection cycle is increased and optimized. The above-mentioned compensation optimization threshold represents The minimum value allowed by the compensation optimization coefficient is extracted from the control database; the above-mentioned expected configuration refers to adjusting the laser parameters of the high-precision laser composite processing machine in the next adjacent detection cycle, specifically increasing the target compensation depth on the basis of the original laser depth, and superimposing the target compensation laser intensity on the basis of the original laser intensity; the above-mentioned optimization of the cutting speed of the high-precision laser composite processing machine in the next adjacent detection cycle specifically refers to: storing a compensation optimization coefficient-speed increase coefficient mapping table in the control database, directly querying the corresponding speed increase coefficient from the control database according to the compensation optimization coefficient of the high-precision laser composite processing machine, and multiplying it with the current cutting speed of the high-precision laser composite processing machine. The processing result is the increased and optimized cutting speed, wherein the speed increase coefficient represents the proportional value of the increase in the cutting speed.

[0057] If the compensation optimization coefficient of the high-precision laser compound processing machine is less than the compensation optimization threshold, it is determined that the processing process of the high-precision laser compound processing machine will be warned. The specific warning process is: obtain the compliance index of the precision sheet metal and compare it with the compliance threshold. If the compliance index of the precision sheet metal is greater than or equal to the compliance threshold, then the compensation optimization threshold is reduced and optimized based on the compliance index of the precision sheet metal. If the compliance index of the precision sheet metal is less than the compliance threshold, the abnormal level of the precision sheet metal is matched based on the compliance index of the precision sheet metal, thereby warning the processing process of the high-precision laser compound processing machine, and at the same time setting the cutting speed of the high-precision laser compound processing machine. is the minimum cutting speed; the compliance threshold value represents the minimum value allowed by the compliance index, which is extracted from the control database; the minimum cutting speed is determined by technical personnel; the above-mentioned compliance index based on precision sheet metal is used to reduce and optimize the compensation optimization threshold value, which means that the control database stores the compliance index-compensation optimization threshold reduction coefficient, and the compliance index of precision sheet metal is directly queried in the control database to obtain the corresponding compensation optimization threshold reduction coefficient, and the coefficient is multiplied by the compensation optimization threshold. The processing result is the compensation optimization threshold after reduction and optimization, wherein the compensation optimization threshold reduction coefficient represents the proportional value of the compensation optimization threshold reduction.

[0058] The above-mentioned compliance index based on precision sheet metal matches the precision sheet metal anomaly level, which means that the compliance index - precision sheet metal anomaly level is stored in the control database. The compliance index of the precision sheet metal is directly queried in the control database to obtain the corresponding precision sheet metal anomaly level, thereby issuing an early warning for the processing process of the high-precision laser compound processing machine. The specific early warning refers to the issuance of corresponding differentiated early warning sounds based on the different precision sheet metal anomaly levels obtained by matching, so as to achieve accurate warning of the processing process of the high-precision laser compound processing machine.

[0059] It needs to be explained that when the compensation optimization coefficient of the high-precision laser composite processing machine is lower than the preset compensation optimization threshold, and the compliance index of the precision sheet metal reaches or exceeds the established compliance threshold, this indicates that the current processing process is in a compliant state. In this case, in order to achieve more accurate and detailed control of the actual processing process, it is necessary to lower the compensation optimization threshold.

[0060] Furthermore, the compensation optimization coefficient of the high-precision laser composite processing machine is specifically analyzed in the following process: obtaining the processing quality index growth rate of the high-precision laser composite processing machine, the laser intensity deviation value of the high-precision laser composite processing machine, and the laser depth deviation value of the high-precision laser composite processing machine; the above-mentioned processing quality index growth rate represents the growth rate of the processing quality index monitored in real time relative to the processing quality index of the high-precision laser composite processing machine during the detection period, which can be obtained by subtracting the processing quality index of the high-precision laser composite processing machine during the detection period from the processing quality index monitored in real time, and dividing the result by the processing quality index of the high-precision laser composite processing machine during the detection period, thereby obtaining the processing quality index growth rate; the above-mentioned laser intensity deviation value represents the degree of deviation between the preset laser intensity in the high-precision laser composite processing machine and the actual laser output intensity, reflecting the degree of deviation between the actual laser output intensity and the laser intensity. The stability of the laser power control system can be obtained by subtracting the actual laser output intensity from the laser intensity preset in the high-precision laser composite processing machine to obtain a laser intensity deviation value. The larger the difference, the weaker the laser intensity due to factors such as laser aging, unstable power supply or optical component contamination. The actual laser output intensity can be measured by a laser power meter. The above-mentioned laser depth deviation value indicates the degree of deviation between the laser processing depth preset in the high-precision laser composite processing machine and the actual laser processing depth, reflecting the efficiency of the interaction between the laser and the material, the accuracy of the motion control system and the rationality of the process parameter setting. The laser depth deviation value can be obtained by subtracting the actual laser processing depth from the laser processing depth preset in the high-precision laser composite processing machine. The larger the laser depth deviation value, the worse the processing consistency. The actual laser processing depth can be obtained by laser interferometry measurement.

[0061] The degree of influence of the proportional relationship between the quantified processing quality index growth rate and the defined processing quality index growth rate on the compensation optimization coefficient, the degree of influence of the proportional relationship between the laser intensity deviation value and the defined laser intensity deviation value on the compensation optimization coefficient, and the degree of influence of the proportional relationship between the laser depth deviation value and the defined laser depth deviation value on the compensation optimization coefficient are summarized to obtain the compensation optimization coefficient.

[0062] It should be explained that the laser intensity deviation reflects the degree of deviation between the actual laser intensity and the set value. If the deviation is too large, it will cause uneven heating of the material, which in turn affects the consistency of the processing depth. The laser depth deviation directly reflects the difference between the actual processing depth and the expected depth. Its size is not only affected by the laser intensity deviation, but also closely related to other process parameters during the processing. The processing quality index growth rate is a key indicator for measuring the speed of processing quality improvement. Its improvement often depends on the precise control of laser intensity and depth. When the laser intensity deviation or depth deviation increases, the processing quality index growth rate may decrease, indicating that the processing quality improvement is hindered.

[0063] The compensation optimization coefficient of the high-precision laser composite processing machine is used to quantify the degree of compensation optimization of the high-precision laser composite processing machine. The specific expression is:

[0064]

[0065] Where JO is the compensation optimization coefficient of the high-precision laser composite processing machine, HGZ is the processing quality index growth rate of the high-precision laser composite processing machine, J_HGZ is the defined processing quality index growth rate preset in the control database, HP is the laser intensity deviation value of the high-precision laser composite processing machine, J_HP is the defined laser intensity deviation value preset in the control database, GP is the laser depth deviation value of the high-precision laser composite processing machine, J_GP is the defined laser depth deviation value preset in the control database, qw1 is the processing quality index growth rate weight preset in the control database, qw2 is the laser intensity deviation value weight preset in the control database, qw3 is the laser depth deviation value weight preset in the control database, and c is a constant.

[0066] The above-defined processing quality index growth rate indicates the minimum value allowed by the processing quality index growth rate; the above-defined laser depth deviation value indicates the maximum value allowed by the laser depth deviation value; the above-defined laser depth deviation value indicates the maximum value allowed by the laser depth deviation value.

[0067] The above-mentioned processing quality index growth rate weight is used to quantify the influence of the unit value of the processing quality index growth rate on the compensation optimization coefficient; the above-mentioned laser intensity deviation value weight is used to quantify the influence of the unit value of the laser intensity deviation value on the compensation optimization coefficient; the above-mentioned laser depth deviation value weight is used to quantify the influence of the unit value of the laser depth deviation value on the compensation optimization coefficient; the control database stores the correspondence between the processing quality index growth rate, laser intensity deviation value and laser depth deviation value and their corresponding weights. For example, the processing quality index growth rate, laser intensity deviation value and laser depth deviation value are input into the control database, and the control database can retrieve the processing quality index growth rate weight, laser intensity deviation value weight and laser depth deviation value weight, and the value range is between 0 and 1.

[0068] The processing pre-adjustment module is used to perform data analysis on the processed precision sheet metal, so as to pre-adjust the processing process of the high-precision laser composite processing machine.

[0069] In a specific embodiment, the present invention realizes intelligent early warning and dynamic optimization of the processing process of high-precision laser composite processing machines by real-time monitoring of the compensation optimization coefficient. When the coefficient meets the standard, the system automatically configures the laser parameters of the next cycle and increases the cutting speed to ensure processing efficiency and quality; if the coefficient is insufficient, the early warning is quickly activated, and the threshold is adjusted or the matching abnormal level is combined with the precision sheet metal compliance index, while the cutting speed is reduced to avoid the production of defective products. This mechanism not only enhances the controllability and stability of the processing process, but also reduces quality risks through preventive adjustments, improves production efficiency and material utilization, and ensures the high precision and consistency of precision sheet metal processing.

[0070] Specifically, the processing process of the high-precision laser composite processing machine is pre-adjusted, specifically referring to: obtaining the compliance index of the processed precision sheet metal, and performing difference processing on it with the compliance threshold, performing ratio processing on the processing result and the compliance threshold, and finally obtaining the compliance margin of the precision sheet metal, and comparing it with the defined compliance margin; the above-mentioned defined compliance margin is a value used to define whether the processing process of the high-precision laser composite processing machine is pre-adjusted, and is extracted from the control database; the above-mentioned compliance margin is used to measure the safety margin indicator of the compliance of the processed precision sheet metal, which reflects the degree of deviation between the current processing status and the compliance threshold.

[0071] It should be explained that the compliance index of the processed precision sheet metal is greater than or equal to the compliance threshold.

[0072] If the compliance margin of the precision sheet metal is greater than or equal to the defined compliance margin, the processing process of the high-precision laser composite processing machine will not be pre-adjusted. If the compliance margin of the precision sheet metal is less than the defined compliance margin, the processing process of the high-precision laser composite processing machine will be pre-adjusted. The specific pre-adjustment process is: according to the compliance margin of the precision sheet metal, the cutting speed of the high-precision laser composite processing machine is preset to be decelerated, and at the same time, the data acquisition frequency of the high-precision laser composite processing machine is preset to be increased, specifically referring to the control database storing the compliance margin-speed pre-reduction coefficient mapping table and the compliance margin-acquisition frequency pre-increase coefficient mapping table, directly from By querying the compliance margin of precision sheet metal in the control database, the corresponding speed pre-reduction coefficient and acquisition frequency pre-increase coefficient can be obtained. The speed pre-reduction coefficient is multiplied by the current cutting speed, and the processing result is the preset cutting speed after deceleration. The acquisition frequency pre-increase coefficient is multiplied by the data acquisition frequency of the high-precision laser composite processing machine, and the processing result is the preset data acquisition frequency of the high-precision laser composite processing machine after the increase. The speed pre-reduction coefficient represents the proportional value of the cutting speed reduction adjustment, and the acquisition frequency pre-increase coefficient represents the proportional value of the data acquisition frequency increase adjustment.

[0073] Furthermore, the compliance index of precision sheet metal is specifically analyzed as follows: obtaining the processing dimension coincidence of precision sheet metal and the hole position deviation factor of precision sheet metal, and at the same time obtaining the average processing quality index of high-precision laser composite processing machine and the average compensation optimization coefficient of high-precision laser composite processing machine during the precision sheet metal processing; the above-mentioned processing dimension coincidence describes the degree of deviation between the actual geometric profile after precision sheet metal processing and the reference geometric profile designed by technicians, reflecting the comprehensive accuracy of dimensional control during the processing process, and the actual geometric profile after precision sheet metal processing is photographed by a CCD camera and processed by data processing software (such as Matrix Laboratory) compares the degree of coincidence between the actual geometric contour after precision sheet metal processing and the reference geometric contour, thereby obtaining the degree of coincidence of the processed dimensions; the above-mentioned hole position deviation factor represents the overall degree of deviation between the center position points of each hole position of the precision sheet metal and the center position points of each hole position designed by the technicians. The hole position image is collected by a high-resolution industrial camera, and the hole position area is extracted after preprocessing. The circle fitting algorithm is combined with sub-pixel optimization technology to accurately calculate the actual center coordinates of each hole position. The actual coordinates are compared with the designed coordinates, and the Euclidean distance deviation of each hole position is calculated and accumulated to obtain the hole position deviation factor.

[0074] By introducing influence values to quantify the influence of the proportional relationship between the machining dimension overlap and the defined machining dimension overlap on the compliance index, the influence of the proportional relationship between the hole position deviation factor and the defined hole position deviation factor on the compliance index, the influence of the average machining quality index on the compliance index, and the influence of the average compensation optimization coefficient on the compliance index, and coupling each influence degree, the compliance index is obtained.

[0075] It needs to be explained that the processing dimension overlap reflects the degree of consistency between the actual size of the sheet metal and the design size, and its level is directly restricted by the processing accuracy of the high-precision laser composite processing machine; the hole deviation factor measures the accuracy of the hole position, and also depends on the stability of the laser processing. The average processing quality index of the high-precision laser composite processing machine is a comprehensive quantitative indicator of the overall performance of the processing process. Its improvement means the enhancement of processing accuracy and stability, which in turn promotes the improvement of processing dimension overlap and hole deviation factor. The average compensation optimization coefficient reflects the system's dynamic adjustment ability to processing deviations. Its optimization can reduce processing errors and improve the processing quality index, thereby indirectly improving processing dimension overlap and hole deviation factor. The coordinated optimization of these four parameters will ultimately significantly improve the compliance index of precision sheet metal and ensure that the product meets design requirements and quality standards.

[0076] The compliance index of precision sheet metal represents the degree of compliance of precision sheet metal processing. The specific expression is:

[0077]

[0078] In the formula, FE is the compliance index of precision sheet metal, CY is the processing dimension overlap of precision sheet metal, J_CY is the defined processing dimension overlap preset in the control database, OD is the hole position deviation factor of precision sheet metal, J_OD is the defined hole position deviation factor preset in the control database, AV_HG is the average processing quality index of high-precision laser composite processing machine, AV_JO is the average compensation optimization coefficient of high-precision laser composite processing machine, zc1 is the processing dimension overlap influence value preset in the control database, zc2 is the hole position deviation factor influence value preset in the control database, zc3 is the average processing quality index influence value preset in the control database, and zc4 is the average compensation optimization coefficient influence value preset in the control database.

[0079] The above-mentioned definition of machining dimension overlap indicates the minimum value allowed for machining dimension overlap; the above-mentioned definition of hole position deviation factor indicates the maximum value allowed for hole position deviation factor.

[0080] The above-mentioned processing dimension overlap influence value is used to quantify the influence of the unit value of processing dimension overlap on the compliance index; the above-mentioned hole position deviation factor influence value is used to quantify the influence of the unit value of the hole position deviation factor on the compliance index; the above-mentioned average processing quality index influence value is used to quantify the influence of the unit value of the average processing quality index on the compliance index; the above-mentioned average compensation optimization coefficient influence value is used to quantify the influence of the unit value of the average compensation optimization coefficient on the compliance index. The control database stores the correspondence between the processing dimension overlap, hole position deviation factor, average processing quality index and average compensation optimization coefficient and their corresponding influence values. For example, the processing dimension overlap, hole position deviation factor, average processing quality index and average compensation optimization coefficient are input into the control database, and the control database can retrieve the processing dimension overlap influence value, hole position deviation factor influence value, average processing quality index influence value and average compensation optimization coefficient influence value, and the value range is between 0 and 1.

[0081] Figure 3This is a schematic diagram of the processing start judgment of the present invention. First, it is judged whether there is precision sheet metal. If not, it is directly judged that the processing fails and the process is ended; if there is precision sheet metal, the processing number type is further judged. If it is the first processing number, check whether its placement area is correct. If correct, it is judged that the processing passes and the process is ended. If not, perform reference hole verification. If the verification passes, it is judged that the processing passes and the process is ended. If the verification fails, a single position abnormality warning is issued and the process is ended; if the processing number type is the second processing number, check whether the placement areas of each precision sheet metal are all correct. If all are correct, perform superposition judgment. If it is judged that there is no superposition, it is judged that the processing passes and the process is ended. If it is judged that there is superposition, a superposition abnormality warning is issued and the process is ended. If the placement areas are not all correct, a superposition judgment is also performed. If it is judged that there is superposition, a superposition abnormality warning is issued and the process is ended. If it is judged that there is no superposition, a reference hole verification is performed on the precision sheet metal to be inspected. If the verification passes, it is judged that the processing passes and the process is ended. If the verification fails, a multi-position abnormality warning is issued and the process is ended.

[0082] Figure 4 This is a schematic diagram of the processing control steps of the present invention. First, the processing quality is evaluated. The processing parameters of the high-precision laser composite processing machine are analyzed to determine whether the current processing quality meets the standards. If it meets the standards, the "optimization control" stage is entered, and parameters such as the cutting speed are adjusted to maintain or improve the processing quality. If it does not meet the standards, the "compensation adjustment" stage is entered, and the compensation parameters are corrected to improve the processing quality. Subsequently, after the compensation adjustment, it is necessary to "monitor the compensation effect" and evaluate the adjustment effectiveness by calculating indicators such as the compensation optimization coefficient. Next, it is determined whether the compensation effect meets the standards based on the monitoring results. This is the key node for determining the subsequent processing direction. If the compensation effect does not meet the standards, "early warning and processing" is performed. Whether to issue an early warning and take corresponding measures is decided based on the compliance of the precision sheet metal, and finally the entire processing process control flow is completed.

[0083] In a specific embodiment, the present invention provides a precision sheet metal processing control system, method and high-precision laser compound processing machine for a high-precision laser compound processing machine. The processing judgment module, optimization and adjustment module, processing early warning module and processing pre-adjustment module work together to build an intelligent, closed-loop quality assurance system for the high-precision laser compound processing machine to process precision sheet metal. The optimization and adjustment module obtains processing parameters in real time and dynamically adjusts them to ensure that the processing process is accurate and controllable, significantly improving processing accuracy and efficiency; the processing early warning module monitors the compensation and adjustment effects in real time, timely warns of potential risks, avoids batch quality accidents, and ensures production stability; the processing pre-adjustment module predicts process problems in advance and optimizes parameters based on finished product data analysis to achieve preventive maintenance. The combination of the three not only reduces the defective rate, but also improves equipment utilization and response speed, making the processing process more efficient, stable and reliable, helping enterprises achieve high-quality and high-efficiency production of precision sheet metal.

[0084] Reference Figure 2 As shown, the second aspect of the present invention provides a precision sheet metal processing control method of a high-precision laser compound processing machine, including: step one, for collecting and analyzing the position image parameters of the precision sheet metal, so as to determine whether the precision sheet metal is processed by the high-precision laser compound processing machine; step two, processing the precision sheet metal by the high-precision laser compound processing machine, obtaining and evaluating the processing process parameters of the high-precision laser compound processing machine, so as to optimize the control and compensation adjustment of the processing process of the high-precision laser compound processing machine; step three, monitoring the compensation adjustment process of the high-precision laser compound processing machine, and determining whether to issue an early warning for the processing process of the high-precision laser compound processing machine; step four, performing data analysis on the processed precision sheet metal, so as to pre-adjust the processing process of the high-precision laser compound processing machine.

[0085] The third aspect of the present invention provides a high-precision laser composite processing machine with a precision sheet metal processing control system such as a high-precision laser composite processing machine, including: a laser cutting module for automatic focusing and automatic cutting height tracking, and real-time adjustment of the laser focus position, cutting height and laser intensity according to the different thicknesses and processing requirements of the processing materials; a visual inspection module for using CCD camera technology to perform high-precision visual inspection of the processed precision sheet metal, thereby obtaining processing information of the precision sheet metal (such as processing dimensions, etc.); a control module for adjusting the control processing strategy.

[0086] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the present invention, they should all fall within the scope of protection of the present invention.

Claims

1. A precision sheet metal processing control system for a high-precision laser composite processing machine, characterized in that: include: A processing determination module is used to determine whether to process the precision sheet metal by a high-precision laser composite processing machine by collecting and analyzing the position image parameters of the precision sheet metal; An optimization and adjustment module is used to process precision sheet metal using a high-precision laser composite processing machine, obtain and evaluate the processing parameters of the high-precision laser composite processing machine, and thus optimize the control and compensation adjustment of the processing process of the high-precision laser composite processing machine; A processing early warning module is used to monitor the compensation adjustment process of the high-precision laser composite processing machine and determine whether to issue an early warning for the processing process of the high-precision laser composite processing machine; The processing pre-adjustment module is used to perform data analysis on the processed precision sheet metal, so as to pre-adjust the processing process of the high-precision laser composite processing machine.

2. The precision sheet metal processing control system of a high-precision laser composite processing machine according to claim 1, characterized in that: The specific process of determining whether to process the precision sheet metal by the high-precision laser composite processing machine is as follows: If there is precision sheet metal, the number of precision sheet metals processed is obtained. If the number of precision sheet metals processed is the first number, it is determined whether the placement area to which the current precision sheet metal belongs belongs to the reference placement area. If the placement area to which the current precision sheet metal belongs belongs to the reference placement area, it is determined that the precision sheet metal is processed by a high-precision laser composite processing machine. If the placement area to which the current precision sheet metal belongs does not belong to the reference placement area, each reference hole of the precision sheet metal is obtained and analyzed according to a preset trajectory cycle. If the result of obtaining and analyzing each reference hole of the precision sheet metal is not the first result within the defined number of cycles, it is determined that the precision sheet metal is not processed by the high-precision laser composite processing machine, and a single-position abnormality warning is issued. If the result of obtaining and analyzing each reference hole of the precision sheet metal is the first result within the defined number of cycles, it is determined that the precision sheet metal is processed by a high-precision laser composite processing machine. If the current number of precision sheet metals processed is the second processing number, it is determined whether the placement areas to which all the current precision sheet metals belong all belong to the reference placement area. If the current placement areas to which all the precision sheet metals belong all belong to the reference placement area, a precision sheet metal superposition determination is performed to determine whether each precision sheet metal is processed by a high-precision laser compound processing machine. If each precision sheet metal is not superimposed, it is determined to be processed by a high-precision laser compound processing machine. If each precision sheet metal is superimposed, it is determined not to be processed by a high-precision laser compound processing machine, and a superposition abnormality warning is issued. If the placement areas to which the current precision sheet metals belong do not all belong to the reference placement area, a precision sheet metal superposition judgment is performed to determine whether the precision sheet metals are processed by the high-precision laser compound processing machine. If the precision sheet metals are superimposed, it is determined that the precision sheet metals are not processed by the high-precision laser compound processing machine, and a superposition abnormality warning is issued. If the precision sheet metals are not superimposed, several precision sheet metals corresponding to the placement areas that do not all belong to the reference placement area are marked as precision sheet metals to be detected, and the reference holes of the precision sheet metals to be detected are obtained and analyzed cyclically according to the preset trajectory. If the result of obtaining and analyzing the reference holes of the precision sheet metals to be detected is not the second result within the defined number of cycles, it is determined that the precision sheet metals are not processed by the high-precision laser compound processing machine, and a multi-position abnormality warning is issued. If the result of obtaining and analyzing the reference holes of the precision sheet metals to be detected is the second result within the defined number of cycles, it is determined that the precision sheet metals are processed by the high-precision laser compound processing machine.

3. The precision sheet metal processing control system of a high-precision laser composite processing machine according to claim 2, characterized in that: The specific determination process for the precise sheet metal superposition determination is as follows: Obtain the shape contour curve of each precision sheet metal and compare it with the reference shape contour curve. If the overlap rate between the shape contour curve of each precision sheet metal and the reference shape contour curve is a defined overlap rate, it is determined that the precision sheet metals do not overlap. If the coincidence rate between the shape contour curve of a certain precision sheet metal and the reference shape contour curve is not the defined coincidence rate, it is determined that the precision sheet metals are superimposed.

4. The precision sheet metal processing control system of a high-precision laser composite processing machine according to claim 1, characterized in that: The optimization control and compensation adjustment of the processing process of the high-precision laser composite processing machine specifically refers to: Evaluate the processing parameters of the high-precision laser composite processing machine during the detection cycle, obtain the processing quality index of the high-precision laser composite processing machine during the detection cycle, and compare it with the processing quality threshold; If the processing quality index of the high-precision laser compound processing machine within the detection cycle is greater than or equal to the processing quality threshold, the processing process of the high-precision laser compound processing machine is optimized and controlled. The specific optimization control process is: obtain the processing quality change rate of the high-precision laser compound processing machine within the detection cycle, and compare it with the defined processing quality change rate. If the processing quality change rate of the high-precision laser compound processing machine within the detection cycle is less than the defined processing quality change rate, match the speed reduction coefficient based on the processing quality change rate, and reduce the cutting speed of the high-precision laser compound processing machine in the next adjacent detection cycle for optimization control; if the processing quality change rate of the high-precision laser compound processing machine within the detection cycle is greater than or equal to the defined processing quality change rate, then the cutting speed of the high-precision laser compound processing machine in the next adjacent detection cycle is not reduced for optimization control.

5. The precision sheet metal processing control system of a high-precision laser composite processing machine according to claim 4, characterized in that: The above-mentioned optimization control and compensation adjustment of the processing process of the high-precision laser composite processing machine are as follows: If the processing quality index of the high-precision laser composite processing machine within the detection period is less than the processing quality threshold, compensation adjustment is performed on the processing process of the high-precision laser composite processing machine. The specific compensation adjustment process is as follows: The control database stores the basic compensation depth and basic compensation laser intensity corresponding to each processing quality deviation factor, obtains the processing quality deviation factor of the high-precision laser composite processing machine within the detection period, and performs absolute difference processing with each processing quality deviation factor stored in the control database in turn to obtain each dynamic difference value, and sorts each dynamic difference value in order from small to large, extracts the processing quality deviation factor corresponding to the dynamic difference value ranked first, and the basic compensation depth and basic compensation laser intensity corresponding to the processing quality deviation factor are marked as the basic compensation depth and basic compensation laser intensity of the high-precision laser composite processing machine, and at the same time, the basic compensation depth and basic compensation laser intensity of the high-precision laser composite processing machine are corrected based on the dynamic difference value ranked first, thereby obtaining the target compensation depth and target compensation laser intensity of the high-precision laser composite processing machine, thereby compensating and adjusting the processing process of the high-precision laser composite processing machine; At the same time, according to the processing quality deviation factor of the high-precision laser composite processing machine within the detection cycle, the corresponding duration of the detection cycle is shortened and adjusted; The processing quality index of the high-precision laser composite processing machine within the detection cycle is analyzed in detail as follows: The processing parameters of the high-precision laser composite processing machine during the detection period include the average laser power density of the high-precision laser composite processing machine during the detection period, the average laser beam divergence angle of the high-precision laser composite processing machine during the detection period, and the average focal diameter of the high-precision laser composite processing machine during the detection period; Quantify the influence of the proportional relationship between the average laser power density and the defined average laser power density on the processing quality index, the influence of the proportional relationship between the average laser beam divergence angle and the defined average laser beam divergence angle on the processing quality index, and the influence of the proportional relationship between the average focal point diameter and the defined average focal point diameter on the processing quality index, and couple each influence degree to obtain the processing quality index; The processing quality index of the high-precision laser composite processing machine within the detection cycle is used to quantify the processing depth accuracy of the high-precision laser composite processing machine within the detection cycle.

6. The precision sheet metal processing control system of a high-precision laser composite processing machine according to claim 1, characterized in that: The specific determination process of whether to issue an early warning for the processing of the high-precision laser composite processing machine is as follows: Monitor the compensation adjustment process of the high-precision laser compound processing machine, analyze the compensation optimization coefficient of the high-precision laser compound processing machine in real time, and compare it with the compensation optimization threshold. If the compensation optimization coefficient of the high-precision laser compound processing machine is greater than or equal to the compensation optimization threshold, it is determined that no early warning will be issued for the processing process of the high-precision laser compound processing machine. At the same time, based on the target compensation depth and target compensation laser intensity of the high-precision laser compound processing machine, the laser depth and laser intensity of the high-precision laser compound processing machine in the next adjacent detection cycle are estimated and configured. Based on the compensation optimization coefficient of the high-precision laser compound processing machine, the cutting speed of the high-precision laser compound processing machine in the next adjacent detection cycle is increased and optimized; If the compensation optimization coefficient of the high-precision laser composite processing machine is less than the compensation optimization threshold, it is determined that an early warning is issued for the processing process of the high-precision laser composite processing machine. The specific early warning process is: obtaining the compliance index of the precision sheet metal and comparing it with the compliance threshold. If the compliance index of the precision sheet metal is greater than or equal to the compliance threshold, then the compensation optimization threshold is reduced and optimized based on the compliance index of the precision sheet metal. If the compliance index of the precision sheet metal is less than the compliance threshold, the abnormal level of the precision sheet metal is matched based on the compliance index of the precision sheet metal, thereby issuing an early warning for the processing process of the high-precision laser composite processing machine, and at the same time setting the cutting speed of the high-precision laser composite processing machine to the minimum cutting speed; The specific analysis process of the compensation optimization coefficient of the high-precision laser composite processing machine is as follows: Obtaining a processing quality index growth rate of a high-precision laser composite processing machine, a laser intensity deviation value of the high-precision laser composite processing machine, and a laser depth deviation value of the high-precision laser composite processing machine; Quantify the degree of influence of the proportional relationship between the machining quality index growth rate and the defined machining quality index growth rate on the compensation optimization coefficient, the degree of influence of the proportional relationship between the laser intensity deviation value and the defined laser intensity deviation value on the compensation optimization coefficient, and the degree of influence of the proportional relationship between the laser depth deviation value and the defined laser depth deviation value on the compensation optimization coefficient, summarize the various degrees of influence, and thus obtain the compensation optimization coefficient; The compensation optimization coefficient of the high-precision laser compound processing machine is used to quantify the compensation optimization degree of the high-precision laser compound processing machine.

7. The precision sheet metal processing control system of a high-precision laser composite processing machine according to claim 1, characterized in that: The pre-adjustment of the processing process of the high-precision laser composite processing machine specifically refers to: Obtain the compliance index of the processed precision sheet metal, perform subtraction processing on it and the compliance threshold, perform ratio processing on the processing result and the compliance threshold, and finally obtain the compliance margin of the precision sheet metal and compare it with the defined compliance margin; If the compliance margin of the precision sheet metal is greater than or equal to the defined compliance margin, the processing process of the high-precision laser composite processing machine will not be pre-adjusted. If the compliance margin of the precision sheet metal is less than the defined compliance margin, the processing process of the high-precision laser composite processing machine will be pre-adjusted. The specific pre-adjustment process is as follows: According to the compliance margin of precision sheet metal, the cutting speed of the high-precision laser composite processing machine is preset to be decelerated, and the data acquisition frequency of the high-precision laser composite processing machine is preset to be increased.

8. The precision sheet metal processing control system of a high-precision laser composite processing machine according to claim 7, characterized in that: The specific analysis process of the compliance index of the precision sheet metal is as follows: Obtain the processing dimension coincidence and hole position deviation factor of precision sheet metal, and obtain the average processing quality index and average compensation optimization coefficient of high-precision laser composite processing machine during precision sheet metal processing; By introducing influence values to quantify the influence of the proportional relationship between the machining dimension overlap and the defined machining dimension overlap on the compliance index, the influence of the proportional relationship between the hole position deviation factor and the defined hole position deviation factor on the compliance index, the influence of the average machining quality index on the compliance index, and the influence of the average compensation optimization coefficient on the compliance index, and coupling each influence degree, the compliance index is obtained; The compliance index of the precision sheet metal represents the degree of compliance of the processing of the precision sheet metal.

9. A method for controlling a precision sheet metal processing system applied to a high-precision laser composite processing machine according to any one of claims 1 to 8, characterized in that: include: Step 1: It is used to collect and analyze the position image parameters of the precision sheet metal to determine whether the precision sheet metal is processed by a high-precision laser composite processing machine; Step 2: Processing the precision sheet metal by a high-precision laser composite processing machine, obtaining and evaluating the processing parameters of the high-precision laser composite processing machine, and thus optimizing the control and compensation adjustment of the processing process of the high-precision laser composite processing machine; Step 3: monitoring the compensation adjustment process of the high-precision laser composite processing machine, and determining whether to issue an early warning for the processing process of the high-precision laser composite processing machine; Step 4: Analyze the data of the processed precision sheet metal to pre-adjust the processing process of the high-precision laser composite processing machine.

10. A high-precision laser composite processing machine using the precision sheet metal processing control system of the high-precision laser composite processing machine according to any one of claims 1 to 8, characterized in that: include: Laser cutting module, used for automatic focusing and cutting height tracking, real-time adjustment of laser focus position, cutting height and laser intensity according to the thickness of the processed material and processing requirements; The visual inspection module is used to perform high-precision visual inspection of processed precision sheet metal using CCD camera technology, thereby obtaining processing information of the precision sheet metal; Control module, used to adjust the control processing strategy.

Images