A casting arc surface grinding system based on positioning mechanism

Abstract

The invention relates to the technical field of arc surface grinding, and in particular to a casting arc surface grinding system based on a positioning mechanism, comprising: a data acquisition module, which acquires a surface image of a casting; a data analysis module, which determines whether the surface image is an irregular area based on an edge feature evaluation value of the surface image, and determines the arc surface type of the irregular area according to a curvature feature characterization parameter of the irregular area; a mode determination module, which determines a processing mode of the casting based on the shape complexity of the corresponding arc surface type, and determines the qualification of the grinding pattern based on the surface uniformity of the irregular area; a data adjustment module, which determines an adjustment method based on a ratio of the surface uniformity to a preset surface uniformity; a data processing module, which determines the qualification of the casting processing based on a surface roughness evaluation value of the cast after processing; and a data optimization module, which determines to increase the feed speed based on the difference between the surface roughness and the preset surface roughness. The invention improves the grinding precision of the casting arc surface grinding.

Description

Technical Field

[0001] The invention relates to the technical field of arc surface grinding, and in particular to a casting arc surface grinding system based on a positioning mechanism. Background Art

[0002] Traditional methods for machining arc surfaces of castings have many defects. In the field of mechanical processing, the early machining of arc surfaces of castings mostly relied on general-purpose machine tools combined with simple fixtures. However, this machining method cannot meet the high-precision machining requirements when facing arc surfaces of complex shapes due to the limited positioning accuracy of the fixtures. At the same time, the traditional machining process lacks real-time position monitoring and adjustment capabilities during the machining process, resulting in low machining accuracy and low machining efficiency.

[0003] Chinese patent application publication number: CN115592523A discloses a multifunctional sample block grinding mechanism and a sample block arc surface grinding method, including a grinding head assembly and a feed assembly, and also includes a grinding support and a positioning fixture; the grinding support is arranged on the feed assembly and is located on the side where the grinding wheel in the grinding head assembly is located; the grinding support includes a base plate and a support, the base plate and the support are connected by a swivel pin and a screw, and the swivel pin is located at the center position in the width direction of the support; the positioning fixture positions and clamps the sample block, and the positioning fixture is detachably mounted on the support of the grinding support. However, the prior art has the following problems: the prior art relies on the basic grinding head assembly and feed assembly to perform the grinding operation, lacks the refined processing of the arc surface of the casting, and cannot achieve accurate control of the arc surface shape and surface quality, thereby resulting in the problem of low processing accuracy of the arc surface. Summary of the invention

[0004] To this end, the present invention provides a casting arc surface grinding system based on a positioning mechanism to overcome the problem that the prior art lacks refined processing of the casting arc surface and cannot achieve precise control of the arc surface shape and surface quality, thereby resulting in low arc surface processing accuracy.

[0005] To achieve the above object, the present invention provides a casting arc surface grinding system based on a positioning mechanism, comprising:

[0006] A data acquisition module, which is used to acquire a surface image of the casting;

[0007] A data analysis module connected to the data acquisition module, for determining the irregular area of ​​the casting based on the edge feature evaluation value of the surface image, and determining whether the irregular area is a convex curved surface or a concave curved surface according to a curvature feature characterization parameter of the irregular area;

[0008] A pattern determination module, which is connected to the data analysis module, is used to determine whether to perform unidirectional processing or reciprocating processing on the casting based on the shape complexity of the convex arc surface or the concave arc surface, and determine the eligibility of the grinding pattern under the condition of reciprocating processing based on the surface uniformity of the irregular area;

[0009] a data adjustment module connected to the mode determination module, for determining to reduce a cutting-in angle or a cutting-out angle of a grinding system based on a ratio of the surface uniformity to a preset surface uniformity;

[0010] A data processing module, which is connected to the mode determination module and the data adjustment module respectively, and is used to determine the eligibility of the casting processing based on the surface roughness evaluation value of the casting after processing;

[0011] A data optimization module is connected to the data processing module and is used to determine whether to increase the feed rate of the grinding system based on the difference between the surface roughness and the preset surface roughness when determining that the casting is unqualified.

[0012] Further, the data analysis module determines that the surface image is an irregular area of ​​the casting based on a comparison result that the edge feature evaluation value of the surface image is greater than a preset edge feature evaluation value;

[0013] The edge feature evaluation value of the surface image is determined according to the following formula:

[0014]

[0015] in, P represents the edge feature evaluation value, s is the number of edge pixels, θ j For the j The tangent direction angle of each pixel point, θ j+1 For the j +1 pixel tangent direction angle.

[0016] Furthermore, the data analysis module determines that the irregular area is a concave arc surface based on a comparison result that the curvature feature characterization parameter of the irregular area is less than or equal to a curvature feature characterization parameter threshold.

[0017] Furthermore, the data analysis module determines that the irregular area is a convex curved surface based on a comparison result that a curvature characteristic characterization parameter of the irregular area is greater than a curvature characteristic characterization parameter threshold.

[0018] Furthermore, the mode determination module determines that the processing mode of the casting is unidirectional processing based on a comparison result that the shape complexity of a single type of arc surface is less than or equal to the corresponding preset shape complexity under the condition of determining the arc surface type of the irregular area.

[0019] Furthermore, the mode determination module determines that the processing mode of the casting is reciprocating processing based on a comparison result that the shape complexity of a single type of arc surface is greater than the corresponding preset shape complexity under the condition of determining the arc surface type of the irregular area.

[0020] Furthermore, under the condition that the processing mode of the casting is determined to be reciprocating processing, the mode determination module determines that the grinding lines are unqualified based on the comparison result that the surface uniformity of the irregular area is less than or equal to the preset surface uniformity, and determines to reduce the cutting angle of the grinding system by a preset cutting angle adjustment coefficient based on the comparison result that the ratio of the surface uniformity to the preset surface uniformity is less than or equal to the preset ratio.

[0021] Furthermore, under the condition that the processing mode of the casting is determined to be reciprocating processing, the mode determination module determines that the grinding pattern is unqualified based on the comparison result that the surface uniformity of the irregular area is less than or equal to the preset surface uniformity, and determines to reduce the cutting angle of the grinding system by a preset cutting angle adjustment coefficient based on the comparison result that the ratio of the surface uniformity to the preset surface uniformity is greater than the preset ratio.

[0022] Further, the data processing module determines that the casting processing is unqualified based on the comparison result that the surface roughness of the casting after processing is greater than the preset surface roughness, and the data optimization module determines to increase the feed speed of the grinding system by the first preset feed speed adjustment coefficient based on the comparison result that the difference between the surface roughness and the preset surface roughness is less than or equal to the preset difference.

[0023] Further, the data processing module determines that the casting processing is unqualified based on the comparison result that the surface roughness of the casting after processing is greater than the preset surface roughness, and the data optimization module determines to increase the feed speed of the grinding system by the second preset feed speed adjustment coefficient based on the comparison result that the difference between the surface roughness and the preset surface roughness is less than or equal to the preset difference.

[0024] Compared with the prior art, the beneficial effect of the present invention lies in that the present invention identifies irregular areas on the surface of the casting, divides the convex arc surface and the concave arc surface, provides precise positioning for subsequent processing, improves processing efficiency and accuracy, selects a processing mode according to the shape complexity of the irregular area, evaluates the conformity of the grinding pattern, ensures the consistency of processing quality, and adjusts the cutting-in or cutting-out angle in the case of unqualified grinding patterns, which helps to reduce processing errors and improve processing accuracy while maintaining the stability of the processing process, evaluates the surface roughness of the casting after processing, and adjusts the feed speed in the case of unqualified processing to further improve processing efficiency, thereby improving the grinding accuracy of the casting arc surface grinding.

[0025] Furthermore, the present invention determines whether the casting surface image is an irregular area by comparing the edge feature evaluation value with the preset edge feature evaluation value, and further distinguishes the irregular area as a concave arc surface or a convex arc surface based on the comparison of the curvature feature characterization parameter with the curvature feature characterization parameter threshold. The identification and classification of irregular areas on the casting surface improves the preparation efficiency and accuracy before processing, and improves the casting processing quality and efficiency.

[0026] Furthermore, the present invention compares the shape complexity of the corresponding arc surface type with the preset shape complexity, selects unidirectional processing or reciprocating mode, and further compares the surface uniformity with the preset surface uniformity to evaluate the conformity of the grinding lines, thereby improving the processing efficiency and the consistency of the processing quality, and evaluating the conformity of the grinding lines to ensure the fineness and surface quality of the processing results.

[0027] Furthermore, the present invention improves the uniformity of the grinding lines, improves the processing accuracy, and reduces the processing errors by selecting an adjustment method of reducing the cutting-in angle or the cutting-out angle based on the comparison result of the ratio of the surface uniformity to the preset surface uniformity and the preset ratio when the grinding lines are unqualified.

[0028] Furthermore, the present invention judges the eligibility of casting processing by comparing the surface roughness of the casting after processing with the preset surface roughness. When the processing is unqualified, the optimization method of the casting processing process is determined according to the comparison result of the difference between the surface roughness and the preset surface roughness and the preset difference, thereby ensuring the precise control of the casting processing quality, reducing the surface roughness, and improving the casting processing quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of module connection of a casting arc surface grinding system based on a positioning mechanism according to an embodiment of the present invention;

[0030] Figure 2 A flow chart for determining the type of arc surface in an irregular area according to an embodiment of the present invention;

[0031] Figure 3 A flow chart for determining the eligibility of a grinding pattern according to an embodiment of the present invention;

[0032] Figure 4 The present invention is a flowchart for determining the processing qualification of a casting according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0035] It should be pointed out that the data in this embodiment are obtained by comprehensive analysis and evaluation of the historical test data and the corresponding historical test results of the present invention in the three months before this test. It can be understood by those skilled in the art that the present invention can determine the above parameters for a single item by selecting the highest proportion of values ​​as the preset standard parameters according to the data distribution, using weighted summation to use the obtained values ​​as the preset standard parameters, substituting each historical data into a specific formula and using the values ​​obtained by the formula as the preset standard parameters or other selection methods, as long as the present invention can clearly define different specific situations in the single determination process through the obtained values.

[0036] See also Figure 1-Figure 4 As shown, Figure 1 It is a schematic diagram of module connection of a casting arc surface grinding system based on a positioning mechanism according to an embodiment of the present invention; Figure 2 A flow chart for determining the type of arc surface in an irregular area according to an embodiment of the present invention; Figure 3 A flow chart for determining the eligibility of a grinding pattern according to an embodiment of the present invention; Figure 4 The present invention is a flowchart for determining the processing qualification of a casting according to an embodiment of the present invention.

[0037] The embodiment of the present invention provides a casting arc surface grinding system based on a positioning mechanism, comprising:

[0038] A data acquisition module, which is used to acquire a surface image of the casting;

[0039] A data analysis module connected to the data acquisition module, for determining the irregular area of ​​the casting based on the edge feature evaluation value of the surface image, and determining whether the irregular area is a convex curved surface or a concave curved surface according to a curvature feature characterization parameter of the irregular area;

[0040] A pattern determination module, which is connected to the data analysis module, is used to determine whether to perform unidirectional processing or reciprocating processing on the casting based on the shape complexity of the convex arc surface or the concave arc surface, and determine the eligibility of the grinding pattern under the condition of reciprocating processing based on the surface uniformity of the irregular area;

[0041] a data adjustment module connected to the mode determination module, for determining to reduce a cutting-in angle or a cutting-out angle of a grinding system based on a ratio of the surface uniformity to a preset surface uniformity;

[0042] A data processing module, which is connected to the mode determination module and the data adjustment module respectively, and is used to determine the eligibility of the casting processing based on the surface roughness evaluation value of the casting after processing;

[0043] A data optimization module is connected to the data processing module and is used to determine whether to increase the feed rate of the grinding system based on the difference between the surface roughness and the preset surface roughness when determining that the casting is unqualified.

[0044] In the embodiment of the present invention, the surface image is obtained by photographing the casting from multiple angles using an industrial camera or other imaging device disposed on the positioning mechanism and capable of acquiring casting surface information in real time.

[0045] In the embodiment of the present invention, the grinding system grinds the arc surface of the casting with a cutting-in angle of 20°, a cutting-out angle of 15° and a feed speed of 200 mm / min, the cutting-in angle is an average of the cutting-in angles of several arc surfaces of castings that have been processed qualifiedly in the past, the cutting-out angle is an average of the cutting-out angles of several arc surfaces of castings that have been processed qualifiedly in the past, and the feed speed is an average of the feed speeds of several arc surfaces of castings that have been processed qualifiedly in the past.

[0046] Specifically, the present invention identifies irregular areas on the surface of the casting, divides the convex arc surface and the concave arc surface, provides precise positioning for subsequent processing, improves processing efficiency and accuracy, selects a processing mode according to the shape complexity of the irregular area, evaluates the conformity of the grinding pattern, ensures the consistency of processing quality, and adjusts the cutting-in or cutting-out angle in the case of unqualified grinding patterns, which helps to reduce processing errors and improve processing accuracy while maintaining the stability of the processing process. The surface roughness of the casting after processing is evaluated, and in the case of unqualified processing, the feed speed is adjusted to further improve processing efficiency, thereby improving the grinding accuracy of the arc surface grinding of the casting.

[0047] Specifically, the data analysis module determines whether the surface image is an irregular area of ​​the casting according to a comparison result between the edge feature evaluation value of the surface image and a preset edge feature evaluation value of 0.89;

[0048] If the edge feature evaluation value is less than or equal to the preset edge feature evaluation value, determining that the surface image is not an irregular area of ​​the casting;

[0049] If the edge feature evaluation value is greater than the preset edge feature evaluation value, it is determined that the surface image is an irregular area of ​​the casting.

[0050] In the embodiment of the present invention, the preset edge feature evaluation value is 0.89, and the preset edge feature evaluation value is obtained by taking the average value of the edge feature evaluation values ​​of several irregular areas of castings in history, but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0051] Specifically, the data analysis module calculates the edge feature evaluation value according to the following formula, setting:

[0052]

[0053] in, P represents the edge feature evaluation value, s is the number of edge pixels, θ j For the j The tangent direction angle of each pixel point, θ j+1 For the j +1 pixel point tangent direction angle, the j +1 pixel is the j pixel points are adjacent to pixel points in any direction on the surface image.

[0054] Specifically, the data analysis module determines the type of the cambered surface of the irregular region based on a comparison result of the curvature characteristic characterization parameter of the irregular region and a curvature characteristic characterization parameter threshold of 0.55, under the condition that the surface image is determined to be the irregular region of the casting;

[0055] If the curvature characteristic characterization parameter is less than or equal to the curvature characteristic characterization parameter threshold, determining that the irregular area is a concave arc surface;

[0056] If the curvature characteristic characterization parameter is greater than the curvature characteristic characterization parameter threshold, it is determined that the irregular region is a convex curved surface.

[0057] In the embodiment of the present invention, the curvature feature characterization parameter threshold value is 0.55, but the above value is not limited to this, and those skilled in the art can also adjust the value according to actual needs.

[0058] In the embodiment of the present invention, the concave arc surface is an arc surface area on the casting surface that is curved inwardly and concavely, and the convex arc surface is an arc surface area on the casting surface that is curved outwardly and convexly.

[0059] Specifically, the curvature characteristic parameter is the ratio of the difference between the maximum curvature and the minimum curvature in the surface image to the average curvature.

[0060] Specifically, the present invention determines whether the casting surface image is an irregular area by comparing the edge feature evaluation value with the preset edge feature evaluation value, and further distinguishes the irregular area as a concave arc surface or a convex arc surface based on the comparison of the curvature feature characterization parameter with the curvature feature characterization parameter threshold. The identification and classification of irregular areas on the casting surface improves the preparation efficiency and accuracy before processing, and improves the casting processing quality and efficiency.

[0061] Specifically, the mode determination module determines the processing mode of the casting according to the comparison result between the shape complexity of the corresponding arc surface type and the preset shape complexity of 0.84 under the condition of determining the arc surface type of the irregular area;

[0062] If the shape complexity is less than or equal to the preset shape complexity, determining that the processing mode of the casting is unidirectional processing;

[0063] If the shape complexity is greater than the preset shape complexity, it is determined that the processing mode of the casting is reciprocating processing.

[0064] In the embodiment of the present invention, the preset shape complexity value is 0.84, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0065] In the embodiment of the present invention, the unidirectional processing is grinding on the surface of the casting along a single direction, and the reciprocating processing is grinding back and forth on the surface of the casting.

[0066] Specifically, the pattern determination module calculates the shape complexity according to the following formula, setting:

[0067]

[0068] in, Q represents the shape complexity, S is the area of ​​the irregular region, S 0 is the area threshold, set S 0=30cm 2 , C is the perimeter of the irregular region, C 0 is the perimeter threshold, set C 0=60cm.

[0069] Specifically, the mode determination module determines the eligibility of the grinding pattern according to the comparison result of the surface uniformity of the irregular area with the preset surface uniformity of 0.73 under the condition that the processing mode of the casting is determined to be reciprocating processing;

[0070] If the surface uniformity is less than or equal to the preset surface uniformity, determining that the grinding pattern is unqualified;

[0071] If the surface uniformity is less than or equal to the preset surface uniformity, it is determined that the grinding pattern is qualified.

[0072] In the embodiment of the present invention, the preset surface uniformity value is 0.73, and the preset surface uniformity is obtained by taking the average value of the surface uniformities of several qualified grinding patterns in the past, but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0073] In the embodiment of the present invention, the grinding lines are traces formed on the surface of the casting through grinding.

[0074] Specifically, the surface uniformity is the ratio of the grayscale average value to the grayscale standard deviation of the surface image.

[0075] Specifically, the present invention compares the shape complexity of the corresponding arc surface type with the preset shape complexity, selects unidirectional processing or reciprocating mode, and further compares the surface uniformity with the preset surface uniformity to evaluate the conformity of the grinding lines, thereby improving the processing efficiency and the consistency of the processing quality, and evaluating the conformity of the grinding lines to ensure the fineness and surface quality of the processing results.

[0076] Specifically, the data adjustment module determines the adjustment method of the reciprocating machining process according to the comparison result of the ratio of the surface uniformity to the preset surface uniformity and the preset ratio 0.47 under the condition that the grinding pattern is determined to be unqualified;

[0077] If the ratio is less than or equal to the preset ratio, it is determined to reduce the cut-in angle to a corresponding value using a preset cut-in angle adjustment coefficient of 0.8;

[0078] If the ratio is greater than the preset ratio, it is determined that the cut-out angle is reduced to a corresponding value by using a preset cut-out angle adjustment coefficient of 0.65;

[0079] The ratio is a ratio of the surface uniformity to the preset surface uniformity.

[0080] In the embodiment of the present invention, the preset ratio is 0.47, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0081] In the embodiment of the present invention, the reduced entry angle is the product of the entry angle and a preset entry angle adjustment coefficient of 0.8; the reduced exit angle is the product of the exit angle and a preset exit angle adjustment coefficient of 0.65.

[0082] Specifically, the present invention improves the uniformity of the grinding lines, improves the processing accuracy, and reduces the processing errors by selecting an adjustment method of reducing the cutting-in angle or the cutting-out angle based on the comparison result of the ratio of the surface uniformity to the preset surface uniformity and the preset ratio when the grinding lines are unqualified.

[0083] Specifically, the data processing module determines the eligibility of the casting processing according to the comparison result between the surface roughness of the casting after processing and the preset surface roughness of 0.67;

[0084] If the surface roughness is less than or equal to the preset surface roughness, it is determined that the casting is qualified for processing;

[0085] If the surface roughness is greater than the preset surface roughness, it is determined that the casting is unqualified.

[0086] In the embodiment of the present invention, the preset surface roughness value is 0.67, and the surface roughness is obtained by taking the average value of the surface roughness of several qualified castings processed in the past, but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0087] Specifically, the data processing module calculates the surface roughness according to the following formula, setting:

[0088]

[0089] in, R a represents the surface roughness, n is the number of measurement points, Z m It is the distance from each measuring point on the surface image of the processed casting to the center line of the processed casting.

[0090] Specifically, the data optimization module determines the optimization method of the casting processing process according to the comparison result of the difference between the surface roughness and the preset surface roughness and the preset difference 0.35 under the condition that the casting processing is determined to be unqualified;

[0091] If the difference is less than or equal to the preset difference, it is determined to increase the feed speed to a corresponding value using a first preset feed speed adjustment coefficient of 1.04;

[0092] If the difference is greater than the preset difference, it is determined to increase the feed speed to a corresponding value using a second preset feed speed adjustment coefficient of 1.07;

[0093] The difference is the difference between the surface roughness and the preset surface roughness.

[0094] In the embodiment of the present invention, the preset difference value is 0.35, but the above value is not limited thereto, and those skilled in the art may also adjust the value according to actual needs.

[0095] In the embodiment of the present invention, the increased feed speed is the product of the feed speed and the i-th preset feed speed adjustment coefficient, where i is 1 or 2, T1 is the first preset feed speed adjustment coefficient 1.04, and T2 is the second preset feed speed adjustment coefficient 1.07.

[0096] Specifically, the present invention judges the qualification of casting processing by comparing the surface roughness of the casting after processing with the preset surface roughness. When the processing is unqualified, the optimization method of the casting processing process is determined according to the comparison result of the difference between the surface roughness and the preset surface roughness and the preset difference, thereby ensuring the precise control of the casting processing quality, reducing the surface roughness, and improving the casting processing quality and production efficiency.

[0097] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0098] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A casting arc surface grinding system based on a positioning mechanism, characterized in that: include: A data acquisition module, which is used to acquire a surface image of the casting; A data analysis module, which is connected to the data acquisition module, and is used to determine the irregular area of ​​the casting based on the edge feature evaluation value of the surface image, and determine whether the irregular area is a convex arc surface or a concave arc surface according to the curvature characteristic characterization parameter of the irregular area, and the edge feature evaluation value of the surface image is determined according to the change value of the number of edge pixels and the tangent direction angle of adjacent pixels; A pattern determination module, which is connected to the data analysis module, is used to determine whether to perform unidirectional processing or reciprocating processing on the casting based on the shape complexity of the convex arc surface or the concave arc surface, and determine the eligibility of the grinding pattern under the condition of reciprocating processing based on the surface uniformity of the irregular area; a data adjustment module connected to the mode determination module, for determining to reduce a cutting-in angle or a cutting-out angle of a grinding system based on a ratio of the surface uniformity to a preset surface uniformity; A data processing module, which is connected to the mode determination module and the data adjustment module respectively, and is used to determine the eligibility of the casting processing based on the surface roughness evaluation value of the casting after processing; A data optimization module is connected to the data processing module and is used to determine whether to increase the feed rate of the grinding system based on the difference between the surface roughness and the preset surface roughness when determining that the casting is unqualified.

2. The casting arc surface grinding system based on the positioning mechanism according to claim 1 is characterized in that: The data analysis module determines that the surface image is an irregular region of the casting based on a comparison result that the edge feature evaluation value of the surface image is greater than a preset edge feature evaluation value.

3. The casting arc surface grinding system based on the positioning mechanism according to claim 2 is characterized in that: The data analysis module determines that the irregular area is a concave arc surface based on a comparison result that the curvature feature characterization parameter of the irregular area is less than or equal to a curvature feature characterization parameter threshold.

4. The casting arc surface grinding system based on the positioning mechanism according to claim 2 is characterized in that: The data analysis module determines that the irregular area is a convex curved surface based on a comparison result that the curvature feature characterization parameter of the irregular area is greater than a curvature feature characterization parameter threshold.

5. The casting arc surface grinding system based on the positioning mechanism according to claim 3 or 4, characterized in that: The mode determination module determines that the processing mode of the casting is unidirectional processing based on the comparison result that the shape complexity of a single type of arc surface is less than or equal to the corresponding preset shape complexity under the condition of determining the arc surface type of the irregular area.

6. The casting arc surface grinding system based on the positioning mechanism according to claim 3 or 4, characterized in that: The mode determination module determines that the processing mode of the casting is reciprocating processing based on the comparison result that the shape complexity of a single type of arc surface is greater than the corresponding preset shape complexity, under the condition of determining the arc surface type of the irregular area.

7. The casting arc surface grinding system based on the positioning mechanism according to claim 6 is characterized in that: The mode determination module determines that the grinding pattern is unqualified based on a comparison result that the surface uniformity of the irregular area is less than or equal to a preset surface uniformity, under the condition that the processing mode of the casting is determined to be reciprocating processing, and determines that the cutting angle of the grinding system is reduced by a preset cutting angle adjustment coefficient based on a comparison result that the ratio of the surface uniformity to the preset surface uniformity is less than or equal to a preset ratio.

8. The casting arc surface grinding system based on the positioning mechanism according to claim 6, characterized in that: The mode determination module determines that the grinding pattern is unqualified based on a comparison result that the surface uniformity of the irregular area is less than or equal to a preset surface uniformity under the condition that the processing mode of the casting is reciprocating processing, and determines that the cutting angle of the grinding system is reduced by a preset cutting angle adjustment coefficient based on a comparison result that the ratio of the surface uniformity to the preset surface uniformity is greater than a preset ratio.

9. The casting arc surface grinding system based on the positioning mechanism according to claim 1, characterized in that: The data processing module determines that the casting processing is unqualified based on the comparison result that the surface roughness of the casting after processing is greater than the preset surface roughness, and the data optimization module determines to increase the feed speed of the grinding system by the first preset feed speed adjustment coefficient based on the comparison result that the difference between the surface roughness and the preset surface roughness is less than or equal to the preset difference.

10. The casting arc surface grinding system based on the positioning mechanism according to claim 1, characterized in that: The data processing module determines that the casting processing is unqualified based on the comparison result that the surface roughness of the casting after processing is greater than the preset surface roughness, and the data optimization module determines to increase the feed speed of the grinding system by the second preset feed speed adjustment coefficient based on the comparison result that the difference between the surface roughness and the preset surface roughness is less than or equal to the preset difference.

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