An intelligent control system for surface grinding after the formation of a wood-plastic attached frame

Abstract

The present invention belongs to the technical field of wood-plastic attachment frame grinding control, and specifically discloses an intelligent control system for surface grinding after the formation of a wood-plastic attachment frame, including: determining the rough grinding texture direction of the flat part and the decorative line part of the wood-plastic attachment frame surface by identifying the stress damage direction of each defective area of the wood-plastic attachment frame; determining the rough grinding sandpaper specification, rough grinding texture direction and rough grinding pressure of the corresponding part by detecting the defect degree of the flat part and the decorative line part of the wood-plastic attachment frame surface, and then identifying the rough grinding effect index to determine the decreasing particle size of the corresponding grinding sandpaper thickness specifications of the flat part and the decorative line part of the surface; determining the applicable grinding pressure by identifying the frame contours of the inner corner area, the outer clamping angle area and the groove area; and selecting the grinding sequence with the optimal effect evaluation coefficient by simulating the structural effect evaluation coefficient and the grinding operation change complexity coefficient in each grinding sequence case.

Description

Technical Field

[0001] The present invention belongs to the technical field of wood-plastic attachment frame grinding control, and relates to an intelligent control system for surface grinding of wood-plastic attachment frames after molding. Background Art

[0002] In the current building materials industry, as a new type of environmental protection material, wood-plastic composite materials are gradually occupying an important position in the field of building decoration due to their unique advantages, such as environmental protection, energy conservation, recyclability, and good physical and mechanical properties. As an important application of wood-plastic composite materials, wood-plastic attachment frames are widely used in building components such as doors, windows, and curtain walls due to their unique texture and functionality. However, there are still many challenges and deficiencies in the surface treatment of wood-plastic attachment frames after molding, especially in surface grinding control. For example, there is a lack of flexibility in dealing with complex-shaped areas. The surface quality of wood-plastic attachment frames directly affects their overall aesthetics and service performance. If there are burrs or unevenness on the surface, it will not only affect the appearance quality of the product but also may cause potential safety hazards during use. Therefore, how to effectively control the surface grinding of wood-plastic attachment frames after molding has become a key link to improve product quality and market competitiveness.

[0003] In the prior art, there are also some related solutions involving the detailed processing mode of grinding control. For example, in the Chinese invention patent application for a grinding equipment control method, system, and grinding equipment with the publication number CN113199348B, by determining the real-time force information of the end effector at the target position during the grinding process, and determining the rotational speed information of the grinding motor according to the real-time force information, and then controlling the grinding motor to drive the end effector to grind the grinding object in a constant-position grinding mode according to the rotational speed information of the grinding motor and the target position information, constant-position grinding is achieved. Since the real-time force information of the end effector is allowed to change during the grinding process, a constant-position grinding mode can be realized.

[0004] Although the above solution proposes some solutions for the detailed processing mode of grinding control, there are still the following limitations: 1. The current technology does not consider the stress damage direction of the defective areas of the wood-plastic attachment frame during grinding control, resulting in incomplete setting of control parameters during the grinding operation process, which may affect the subsequent actual grinding effect.

[0005] 2. The existing grinding technology has insufficient contour recognition of the detailed areas, resulting in possible lack of reliability in setting the operation parameters and no optimization and screening of the grinding sequence for the detailed areas, which may affect the overall grinding effect and production efficiency. Summary of the Invention

[0006] In view of this, to solve the problems raised in the above background art, an intelligent control system for surface grinding of wood-plastic attachment frames after molding is proposed.

[0007] The object of the present invention can be achieved by the following technical solutions: The present invention provides an intelligent control system for surface grinding after the formation of a wood-plastic attachment frame. The system includes: A rough grinding data setting module: used to divide the flat part and the decorative line part of the wood-plastic attachment frame surface, detect the surface defect state of the wood-plastic attachment frame, and determine the rough grinding data. The rough grinding data includes sandpaper specifications, texture directions, and grinding pressures.

[0008] A rough grinding effect analysis module: used to detect the rough grinding effect and determine the decreasing particle size of rough grinding for the flat part and the decorative line part of the wood-plastic attachment frame surface.

[0009] A detailed area recognition module: used to demarcate each detailed area. Each detailed area includes an inner corner area, an outer clamping corner area, and a groove area.

[0010] A fine grinding parameter analysis module: used to identify the frame contours of each detailed area from the wood-plastic attachment frame texture framework model and determine the suitable grinding parameters for each detailed area.

[0011] A grinding sequence analysis module: used to simulate the implementation operations of each detailed area in different grinding sequences and determine the fine grinding sequence of the detailed areas.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) By identifying the stress damage direction of each defect area of the wood-plastic attachment frame, the present invention determines the rough grinding texture direction of the flat part and the decorative line part of the wood-plastic attachment frame surface, that is, starting from one end of stress concentration and gradually grinding along the stress transmission direction, which can ensure that the stress generated during the grinding process is reasonably released, avoiding new stress concentration and damage.

[0013] (2) By detecting the defect degree of the flat part and the decorative line part of the wood-plastic attachment frame surface, the present invention determines the rough grinding sandpaper specifications, rough grinding texture directions, and rough grinding pressures of the corresponding parts, which can ensure that the grinding effect is neither excessive nor too light. Furthermore, by identifying the rough grinding effect index, the decreasing particle size of the corresponding grinding sandpaper thickness specifications for the flat part and the decorative line part is determined, which can gradually refine the surface roughness of the wood-plastic attachment frame, thereby improving the grinding accuracy.

[0014] (3) By identifying the frame contours of the inner corner area, the outer clamping corner area, and the groove area and determining their suitable grinding pressures, the present invention can avoid the situation where the structural contours of these detailed areas are damaged or under-grinded due to improper control of the grinding pressure.

[0015] (4) By simulating the structural effect evaluation coefficient and the complexity coefficient of grinding operation changes in each grinding sequence, the present invention can intuitively understand the impact of each sequence on the quality of the final product. Furthermore, by selecting the grinding sequence with the optimal effect evaluation coefficient, it can ensure that the detail areas are properly processed during the fine grinding process, thereby improving the grinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the connection of the system modules of the present invention.

[0018] Figure 2 It is a schematic diagram of the texture frame model of the wood-plastic attachment frame of the present invention.

[0019] Figure 3 It is a schematic diagram of the detail area of the present invention.

[0020] Reference numerals: 1, defect area of the flat surface part; 2, thickness line; 3, arc line; 4, inner corner area; 5, groove area. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, rather than all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0022] Please refer to Figure 1 As shown, the present invention provides an intelligent control system for surface grinding after the formation of a wood-plastic attachment frame. The system includes: a rough grinding data setting module, a rough grinding effect analysis module, a detail area recognition module, a fine grinding parameter analysis module, and a grinding sequence analysis module.

[0023] The rough grinding data setting module is connected to the rough grinding effect analysis module, the rough grinding effect analysis module is connected to the detail area recognition module, the detail area recognition module is connected to the fine grinding parameter analysis module, and the fine grinding parameter analysis module is connected to the grinding sequence analysis module.

[0024] The rough grinding data setting module is used to divide the flat part and the decorative line part of the wood-plastic attachment frame surface, detect the surface flaw state of the wood-plastic attachment frame, and determine the rough grinding data. The rough grinding data includes sandpaper specifications, texture directions, and grinding pressures.

[0025] Please refer to Figure 2 As shown, in a preferred embodiment, the detection of the surface flaw state of the wood-plastic attachment frame includes: extracting the texture frame model of the wood-plastic attachment frame, extracting the frame textures of the flat part and the decorative line part, obtaining the texture features corresponding to each preset defect type of the wood-plastic attachment frame, and identifying each flaw area, its flaw type, and flaw degree of the flat part and the decorative line part of the wood-plastic attachment frame surface based on edge detection technology, including fracture or notch areas, scratch areas, etc. Each flaw area of the flat part is recorded as each undulating area, and each flaw area of the decorative line part is recorded as each deteriorated area, and the flaw degree of each undulating area and each deteriorated area is obtained.

[0026] Furthermore, compare the flaw degrees of each undulating area and each deteriorated area with the preset flaw reference degree. If the flaw degree of a certain undulating area or a certain deteriorated area exceeds the preset flaw reference degree, an irregular warning is given for this wood-plastic attachment frame. If the flaw degrees of each undulating area and each deteriorated area do not exceed the preset flaw reference degree, the rough grinding data is determined.

[0027] The flat part refers to the relatively smooth area of the wood-plastic attachment frame without special shapes or concave-convex textures.

[0028] The flaw degree refers to the ratio between the defect texture features of the flaw area belonging to the flaw type and the preset reference texture features of the corresponding flaw type. The defect texture features include defect area, defect depth, etc.

[0029] In a further preferred embodiment, the determination of the rough grinding data is specifically as follows: match the flaw degrees of each undulating area and each deteriorated area with the corresponding suitable flaw degree ranges preset for each sandpaper specification respectively, determine the matching sandpaper specifications for each undulating area and each deteriorated area, compare and select the finest grain size sandpaper specification that is suitable among each undulating area and each deteriorated area, and determine it as the rough grinding sandpaper specification for the flat part and the decorative line part of the wood-plastic attachment frame surface.

[0030] The sandpaper specification refers to the thickness and fineness of the sandpaper. The grain size of the sandpaper is expressed in "mesh". The larger the mesh number, the higher the number of abrasive grains per unit area of the sandpaper, the smaller the abrasive particles, and the finer the sandpaper grain size.

[0031] By obtaining the infrared images of each undulating area and each deteriorated area, based on the principle that the chromaticity of the infrared image of the damaged area is deeper, mark the stress damage paths of each undulating area and each deteriorated area, and the stress direction to which they belong is the stress damage direction, such as the derivative direction of the fiber fracture point and the derivative direction of the cracking path, so as to obtain the stress damage directions of each undulating area and each deteriorated area.

[0032] The stress direction to which the stress damage path belongs extends from the position with the deepest chromaticity as the starting point to the position with lighter chromaticity.

[0033] Set damage weights for various stress damage directions, and determine the rough grinding texture directions of the flat part and the decorative line part of the wood-plastic attachment frame.

[0034] Obtain the corresponding defect degrees of the defect areas corresponding to the finest grit sandpaper specifications adapted in each undulating area and each deteriorated area from the defect degrees of each undulating area and each deteriorated area and extract the comprehensive grinding expectation values of the flat part and the decorative line part of the wood-plastic attachment frame to determine the rough grinding pressure of the flat part and the decorative line part 、 where is the basic grinding pressure corresponding to the unit state evaluation coefficient preset for the wood-plastic attachment frame, is the preset reference defect degree.

[0035] The comprehensive grinding expectation values of the flat part and the decorative line part of the wood-plastic attachment frame are determined by parameters such as the amount of burrs and the cumulative undulation amplitude of bumps and depressions. Exemplarily, obtain the frame contours of the flat part and the decorative line part of the wood-plastic attachment frame from the wood-plastic attachment frame texture model, compare them with the standard frame contours of the corresponding flat part and decorative line part in the preset standard texture frame model of the wood-plastic attachment frame, and based on the preset texture features corresponding to burrs and bumps and depressions, identify the amount of burrs and the cumulative undulation amplitude of bumps and depressions on the flat part of the wood-plastic attachment frame surface from the wood-plastic attachment frame texture model, compare them with the preset reference burr amount and the reference cumulative undulation amplitude of bumps and depressions respectively, add the two ratios to obtain the comprehensive grinding expectation value of the flat part of the wood-plastic attachment frame surface, and obtain the comprehensive grinding expectation value of the decorative line part of the wood-plastic attachment frame surface in the same way.

[0036] In a further preferred embodiment, the process of determining the rough grinding texture directions of the flat part and the decorative line part of the wood-plastic attachment frame is as follows: Set damage weights for various stress damage directions, obtain the corresponding damage weights of the stress damage directions of each undulating area and each deteriorated area, and then add up the damage weights of various stress damage directions to obtain the cumulative damage weights of various stress damage directions in the flat part and the decorative line part of the wood-plastic attachment frame.

[0037] Extract the stress damage directions of the undulating regions and deteriorated regions corresponding to the finest-grit sandpaper specifications adapted in each undulating region and each deteriorated region from the stress damage directions of each undulating region and each deteriorated region, assign weights to these stress damage directions, and then accumulate them to the damage accumulation weights of the corresponding stress damage directions in the flat part and the decorative line part of the wood-plastic attachment frame surface to obtain the comprehensive damage weights of various stress damage directions in the flat part and the decorative line part of the wood-plastic attachment frame surface. Further compare them with each other and select the stress damage direction corresponding to the maximum comprehensive damage weight in the flat part and the decorative line part of the wood-plastic attachment frame surface, which is recorded as the rough grinding texture direction of the flat part and the decorative line part of the wood-plastic attachment frame surface.

[0038] The present invention determines the rough grinding texture directions of the flat part and the decorative line part of the wood-plastic attachment frame by identifying the stress damage directions of each defective region of the wood-plastic attachment frame, and then performs sequential grinding according to the stress damage directions, that is, starting from one end of stress concentration and gradually grinding along the stress transmission direction, which can ensure that the stress generated during the grinding process is reasonably released, avoid new stress concentration and damage, and thus reduce the rework and scrap rates caused by improper defect treatment, which helps to reduce production costs and improve production efficiency.

[0039] The rough grinding effect analysis module is used to detect the rough grinding effect and determine the decreasing granularity of the rough grinding of the flat part and the decorative line part of the wood-plastic attachment frame.

[0040] In a preferred embodiment, the determination of the decreasing granularity of the rough grinding of the flat part and the decorative line part of the wood-plastic attachment frame is specifically as follows: According to the comprehensive grinding expected value identification method of the flat part and the decorative line part of the wood-plastic attachment frame surface, similarly obtain the comprehensive grinding expected values after rough grinding of the flat part and the decorative line part of the wood-plastic attachment frame surface, obtain the inverse ratio of it to the preset reference grinding expected value, which is recorded as the rough grinding effect index of the flat part and the decorative line part of the wood-plastic attachment frame surface 。

[0041] Determine the decreasing granularity of the corresponding grinding sandpaper thickness specifications of the flat part and the decorative line part of the wood-plastic attachment frame 、 , is the grain size reduction corresponding to the preset unit rough grinding effect index, and then perform the rough grinding operation on the flat part and the decorative line part of the wood-plastic attachment frame according to the decreasing granularity for a specified number of times.

[0042] It should be noted that during the processing of wood-plastic materials, by gradually reducing the sanding intensity and performing multiple sandings, burrs and uneven textures generated on the surface can be removed more meticulously. Multiple sandings help control the depth of sanding and avoid unevenness on the material surface caused by over-sanding in one go. If a large sanding intensity is used at the beginning, it may cause excessive wear on the material surface and even deepen the defects in the defective areas.

[0043] By detecting the defect levels of the flat parts and decorative line parts on the wood-plastic attachment frame surface, the present invention determines the coarse sandpaper specifications, coarse sanding texture directions, and coarse sanding pressures for the corresponding parts, ensuring that the sanding effect is neither excessive nor too light. Furthermore, it identifies the coarse sanding effect indicators and determines the decreasing grain sizes of the corresponding sandpaper thickness specifications for the flat parts and decorative line parts on the surface, gradually refining the roughness of the wood-plastic attachment frame surface, thereby improving the precision of sanding.

[0044] The detailed area identification module is used to demarcate each detailed area, and each detailed area includes an inner corner area, an outer clamping corner area, and a groove area.

[0045] The inner corner area refers to the edge seam of the inner cavity of the wood-plastic attachment frame.

[0046] The outer clamping corner area refers to the outer clamping seam where the wood-plastic attachment frame is connected to other components.

[0047] The groove area refers to the concave-convex seam of the decorative line.

[0048] The fine sanding parameter analysis module is used to identify the frame contours of each detailed area from the wood-plastic attachment frame texture framework model and determine the adapted sanding parameters for each detailed area. The adapted sanding parameters are the adapted sanding pressures.

[0049] Please refer to Figure 3 As shown, in a preferred embodiment, the determination of the adapted sanding parameters for each detailed area includes: identifying the amount of burrs in the inner corner area from the frame contours of each detailed area, multiplying it by the corresponding sanding increase pressure per unit burr amount preset, obtaining the adapted sanding pressure for the inner corner area, and then performing a sanding operation on the inner corner area of the wood-plastic attachment frame with the sanding paper at this adapted sanding pressure.

[0050] Obtain the frame contour of the outer clamping corner area from the frame contours of each detailed area and determine the adapted sanding pressure for the outer clamping corner area.

[0051] Obtain the frame contour of the groove area from the frame contours of each detailed area and determine the adapted sanding pressure for the groove area.

[0052] In a further preferred embodiment, the method for obtaining the adapted grinding pressure of the outer card corner region is as follows: Identify the thickness line and the arc line of the outer card corner region from the frame contour of the outer card corner region, and extract the thickness of the thickness line and the curvature of the arc line . Denote the connection point position of the arc line and the thickness line as the sharp corner point position, and then analyze the structural transition strength of the frame contour at the sharp corner point position belonging to the outer card corner region . Wherein represents the preset reference thickness of the thickness line, represents the preset reference curvature of the arc line, and e is the natural constant.

[0053] Specifically, the greater the curvature of the arc line, the sharper the frame contour at the sharp corner point position, and thus the more easily the structure is damaged during the grinding process, so the structural transition strength is weaker.

[0054] Determine the adapted grinding pressure of the outer card corner region . Wherein represents the preset basic grinding pressure for the wood-plastic auxiliary frame to perform fine grinding operations.

[0055] In a further preferred embodiment, the analysis content for determining the adapted grinding pressure of the groove region includes: Extract the unit defined side area of the groove region from the frame contour of the groove region, and extract the unit contact area between the grinding sandpaper and the groove region when grinding at a preset angle, and obtain the corresponding ratio with the unit defined side area of the groove region. If the ratio is within a range of a first type of contact surplus threshold, keep the grinding sandpaper perpendicular to the surface; if the ratio is within a range of a second type of contact deficiency threshold, adjust the inclination angle of the grinding pressure of the grinding sandpaper with respect to the groove region to increase the contact area of the inclined surface.

[0056] Both the range of the first type of contact surplus threshold and the range of the second type of contact deficiency threshold are preset values.

[0057] Further, according to the method for identifying the rough grinding effect indexes of the flat part and the decorative line part of the wood-plastic auxiliary frame surface, similarly obtain the rough grinding effect indexes of the groove region , determine the adapted grinding pressure

[0058] . Wherein represents the contact situation belonging to the range of the first type of contact surplus threshold, represents the contact situation belonging to the range of the second type of contact deficiency threshold, represents the grinding pressure adaptation influence weight under the contact situation belonging to the range of the first type of contact surplus threshold, Indicates the grinding pressure adaptation influence weight under the contact situation belonging to the second-class contact deficiency threshold range, .

[0059] The present invention can avoid the damage of the structural contour or insufficient grinding caused by improper control of the grinding pressure in these detail areas by identifying the frame contours of the inner corner area, the outer clamping corner area and the groove area and determining their adapted grinding pressures. Specifically, by identifying the burr amount in the inner corner area to determine its adapted grinding pressure, it can avoid incomplete burr removal due to insufficient pressure or corner damage caused by excessive pressure. This precise adaptation ensures the accuracy of the grinding process, enabling the burrs in the corner area to be effectively and not overly processed; by identifying the structural transition strength at the sharp corner point position in the outer clamping corner area to determine its adapted grinding pressure, excessive grinding pressure is likely to cause damage to the inner corner area, such as corner wear and deformation. Therefore, grinding with an adapted grinding pressure can maximize the protection of the integrity of the workpiece at the sharp corner point position; the groove area is usually a key part in the structural member, and its quality directly affects the stability and safety of the overall structure. By identifying the inner side contact area of the groove area to determine its adapted grinding pressure and adjusting the grinding pressure inclination angle, it can avoid improper grinding caused by insufficient contact force between the groove area and the grinding equipment, thereby ensuring that the quality of the groove area meets the design requirements and further improving the stability and reliability of the overall structure.

[0060] The grinding sequence analysis module is used to simulate the implementation operations of each detail area in different grinding sequences and determine the fine grinding sequence of the detail areas.

[0061] In a preferred implementation manner, the content of the grinding sequence analysis module includes: simulating the implementation operations of each detail area in different grinding sequences through scene simulation software, exporting the structural damage indicators of all detail areas in each grinding sequence, obtaining the inverse ratio corresponding to the preset reference value of the corresponding structural damage indicator, and summing to obtain the structural effect evaluation coefficient in each grinding sequence.

[0062] The structural damage indicators include the grinding strength in the overlapping area of the wood-plastic attachment frame and the bending, fracture and deformation damage amplitudes of each detail area.

[0063] In a further preferred implementation manner, the determination of the fine grinding sequence of the detail areas is specifically as follows: Export the angle change amplitude of the grinding equipment passing through all detail areas in each grinding sequence from the scene simulation software , path change amplitude , pressure change amplitude , detect the complexity coefficient of grinding operation change in each grinding sequence

[0064] , where Indicates the reference values corresponding to the preset angular change range, path change range, and pressure change range. Indicates a set constant, such as , Indicates the number of the grinding sequence. , Indicates the number of grinding sequences.

[0065] Normalize the structure effect evaluation coefficient and the grinding operation change complexity coefficient for each grinding sequence to obtain the operation priority weight for each grinding sequence. Compare and screen out the grinding sequence to which the maximum operation priority weight belongs, and mark it as the fine grinding sequence for the detailed area.

[0066] The present invention analyzes the operation priority weight of each grinding sequence by simulating the structure effect evaluation coefficient and the grinding operation change complexity coefficient in each grinding sequence, can intuitively understand the impact of each sequence on the quality of the final product, and then select the grinding sequence with the optimal effect evaluation coefficient, which can ensure that the detailed area is properly processed during the fine grinding process, thereby improving the grinding quality.

[0067] The above content is only an example and illustration of the concept of the present invention. Those skilled in the art of the present technology make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they should fall within the protection scope of the present invention.

Claims

1. An intelligent control system for surface grinding after the formation of a wood-plastic attached frame, characterized in that, The system includes: A rough grinding data setting module: used to divide the flat part and the decorative line part of the surface of the wood-plastic accessory frame, detect the flaw state of the surface of the wood-plastic accessory frame, and determine the rough grinding data; A rough grinding effect analysis module: used to detect the rough grinding effect and determine the decreasing grain size of the rough grinding of the flat part and the decorative line part of the surface of the wood-plastic accessory frame; A detailed area recognition module: used to demarcate each detailed area, and each detailed area includes an inner corner area, an outer clamping corner area, and a groove area; A fine grinding parameter analysis module: used to identify the frame contour of each detailed area and determine the suitable grinding parameters for each detailed area; A grinding sequence analysis module: used to simulate the implementation operations of each detailed area in different grinding sequences and determine the fine grinding sequence of the detailed areas; The specific method for determining the rough grinding data is as follows: match the flaw degrees of each undulating area and each deteriorated area with the corresponding suitable flaw degree ranges of each preset sandpaper specification respectively, determine the suitable sandpaper specification for each undulating area and each deteriorated area, compare and screen out the finest grain size sandpaper specification suitable for each undulating area and each deteriorated area, and determine it as the rough grinding sandpaper specification for the flat part and the decorative line part of the surface of the wood-plastic accessory frame; By obtaining the infrared images of each undulating area and each deteriorated area, mark the stress damage paths of each undulating area and each deteriorated area, and the stress direction to which it belongs is the stress damage direction, so as to obtain the stress damage directions of each undulating area and each deteriorated area; Set damage weights for various stress damage directions and determine the rough grinding texture directions of the flat part and the decorative line part of the surface of the wood-plastic accessory frame; Obtain the corresponding defect degrees of the defect areas belonging to the finest-grit sandpaper specifications adapted in each undulating area and each deteriorated area , and extract the comprehensive grinding expectation values of the flat part and the decorative line part of the wood-plastic attachment frame surface , and determine the rough grinding pressure of the flat part and the decorative line part , , where is the basic grinding pressure corresponding to the unit state evaluation coefficient preset for the wood-plastic attachment frame, is the preset reference defect degree; The process of determining the rough grinding texture directions of the flat part and the decorative line part of the surface of the wood-plastic accessory frame is as follows: set damage weights for various stress damage directions, obtain the corresponding damage weights of the stress damage directions of each undulating area and each deteriorated area, and then accumulate the damage weights of various stress damage directions to obtain the cumulative damage weights of various stress damage directions in the flat part and the decorative line part of the surface of the wood-plastic accessory frame; Extract the stress damage directions of the undulating areas and deteriorated areas to which the finest grain size sandpaper specification suitable for each undulating area and each deteriorated area belongs, assign weight values to this stress damage direction, and then accumulate it to the cumulative damage weights of the corresponding stress damage directions in the flat part and the decorative line part of the surface of the wood-plastic accessory frame to obtain the comprehensive damage weights of various stress damage directions in the flat part and the decorative line part of the surface of the wood-plastic accessory frame. Further compare them with each other, and screen out the stress damage direction to which the maximum value of the comprehensive damage weight in the flat part and the decorative line part of the surface of the wood-plastic accessory frame belongs, which is recorded as the rough grinding texture direction of the flat part and the decorative line part of the surface of the wood-plastic accessory frame.

2. The intelligent control system for surface grinding after the formation of a wood-plastic attachment frame according to claim 1, wherein The content of detecting the flaw state of the surface of the wood-plastic accessory frame includes: extracting the texture frame model of the wood-plastic accessory frame, extracting the frame textures of the flat part and the decorative line part, obtaining the texture features corresponding to each preset defect type of the wood-plastic accessory frame, identifying each flaw area, its flaw type and flaw degree on the flat part and the decorative line part of the surface of the wood-plastic accessory frame, and recording each flaw area on the flat part as each undulating area and each flaw area on the decorative line part as each deteriorated area, so as to obtain the flaw degrees of each undulating area and each deteriorated area.

3. The intelligent control system for surface grinding after forming of a wood-plastic attached frame according to claim 1, characterized in that, The determination of the decreasing grain size of rough grinding for the flat part and the decorative line part of the wood-plastic attachment frame is specifically as follows: Obtain the comprehensive grinding expected value after rough grinding of the flat part and the decorative line part of the wood-plastic attachment frame, obtain the inverse ratio of the comprehensive grinding expected value to the preset reference grinding expected value, and record it as the rough grinding effect index of the flat part and the decorative line part of the wood-plastic attachment frame ; Determine the decreasing particle sizes of the corresponding sandpaper thickness specifications for the flat part and the decorative line part of the wood-plastic attachment frame and , which is the particle size reduction corresponding to the preset unit rough grinding effect index, and then perform the rough grinding operation on the flat part and the decorative line part of the wood-plastic attachment frame a specified number of times according to the decreasing particle sizes.

4. An intelligent control system for surface grinding after the formation of a wood-plastic attached frame according to claim 1, characterized in that, The determination of the adaptive grinding parameters for each detailed area includes: identifying the burr amount in the inner corner area from the frame contour of each detailed area, multiplying it by the corresponding grinding amplitude pressure of the preset unit burr amount to obtain the adaptive grinding pressure for the inner corner area, and then performing a grinding operation on the inner corner area of the wood-plastic attachment frame with the grinding sandpaper at this adaptive grinding pressure; Obtain the frame contour of the outer corner area and determine the adaptive grinding pressure for the outer corner area; Obtain the frame contour of the groove area and determine the adaptive grinding pressure for the groove area.

5. An intelligent control system for surface grinding after forming of a wood-plastic attachment frame according to claim 4, characterized in that, The method for obtaining the adaptive grinding pressure of the outer card angle area is as follows: identify the thickness line and the arc line of the outer card angle area from the frame contour of the outer card angle area, extract the thickness of the thickness line and the curvature of the arc line, record the connection point position of the arc line and the thickness line as the sharp corner point position, and then analyze the structural transition strength of the frame contour of the outer card angle area belonging to the sharp corner point position ; Determine the outer card angle area of the adapted grinding pressure , where represents the preset basic grinding pressure for the wood-plastic attached frame to perform fine grinding operation.

6. The intelligent control system for surface grinding after the formation of a wood-plastic attachment frame according to claim 5, wherein, The analysis content for determining the adaptive grinding pressure of the groove area includes: extracting the unit defined side area of the groove area from the frame contour of the groove area, and extracting the unit contact area between the grinding sandpaper and the groove area when grinding at a preset angle, obtaining the corresponding ratio of it to the unit defined side area of the groove area. If the ratio is within the range of a first type of contact abundance threshold, keep the grinding sandpaper perpendicular to the surface; if the ratio is within the range of a second type of contact deficiency threshold, adjust the inclination angle of the grinding pressure of the grinding sandpaper with respect to the groove area; Obtain the groove area of the rough grinding effect index , determine the adaptive grinding pressure of the groove area , where represents the contact situation belonging to a class of contact surplus threshold ranges, represents the contact situation belonging to a class of contact deficiency threshold ranges, represents the grinding pressure adaptation influence weight under the contact situation belonging to a class of contact surplus threshold ranges, represents the grinding pressure adaptation influence weight under the contact situation belonging to a class of contact deficiency threshold ranges, .

7. An intelligent control system for surface grinding after the formation of a wood-plastic attachment frame according to claim 1, characterized in that, The content of the grinding sequence analysis module includes: simulating the implementation operations of each detailed area in different grinding sequences through scene simulation software, exporting the structural damage indicators of all detailed areas under each grinding sequence, obtaining the inverse ratio corresponding to the preset reference value of the corresponding structural damage indicator, and summing to obtain the structural effect evaluation coefficient under each grinding sequence.

8. An intelligent control system for surface grinding after the formation of a wood-plastic attachment frame according to claim 7, characterized in that, The specific determination of the fine grinding sequence for the detailed area is: exporting the angle change amplitude, path change amplitude, and pressure change amplitude of the grinding equipment passing through all detailed areas under each grinding sequence, and detecting the complexity coefficient of the grinding operation change under each grinding sequence; Perform normalization calculation on the structural effect evaluation coefficient and the grinding operation change complexity coefficient under each grinding sequence to obtain the operation priority weight for each grinding sequence, compare and select the grinding sequence with the maximum operation priority weight, and mark it as the fine grinding sequence for the detailed area.

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