Vehicle-mounted crystal product polishing size accurate control process and on-line measurement system

Abstract

The invention relates to the technical field of crystal production, in particular to a vehicle-mounted crystal product polishing size accurate control process and an on-line measurement system, due to the crystal structure and physical characteristics of a vehicle-mounted crystal product, the vehicle-mounted crystal product is a relatively fragile material, and the vehicle-mounted crystal product is not prone to deformation. Therefore, a cutting area is established on the surface of the vehicle-mounted crystal product in advance, the cutting area and a polishing area are accurately recognized through area division, and the symmetrical polishing area is correspondingly recognized and matched in the direction of the central symmetry axis of the vehicle-mounted crystal product by controlling the polishing mode. The two sets of polishing wheels are used for correspondingly recognizing the matched symmetrical polishing areas to conduct polishing control of the feeding speed, the operation angle and the force control from the direction away from each other, then the refined operation of vehicle-mounted crystal polishing is improved, the damage rate of crystal cutting and polishing is reduced, and therefore the ex-factory qualified rate of products is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of crystal production, and more specifically, to a precise control process for the grinding dimensions of vehicle-mounted crystal products and an online measurement system. Background Art

[0002] As a high-end and exquisite decorative material, crystal decoration is widely used in homes, offices, weddings, hotels, shopping malls and other environments. Crystal has excellent transparency, gloss and reflection effect, so it is often used as a raw material for various decorative items such as artworks, accessories, lighting, etc. Crystal decorations can not only add to the artistic atmosphere of the space, but also show unique light and shadow effects.

[0003] Due to its unique light and shadow effects, it is highly sought after by the people. For example, in many high-end cars, the crystal gear lever made of crystal material can, on the one hand, reflect the luxurious uniqueness of the car interior, and on the other hand, give the car brand a high-end and precious label.

[0004] The crystal gear lever is a combination product of crystal material and metal machinery. It is formed by assembling crystal ornaments on metal machinery. In order for the crystal material to be able to combine with the metal machinery, specific grooves usually need to be buried on the crystal ornaments to facilitate the transfer and fixation of the metal machinery. Multiple bevels will be polished on the surface of the crystal material to improve the refractive efficiency of the crystal surface. In addition, the setting of multiple bevels can further increase the driver's grip.

[0005] However, due to the crystal structure and physical properties of crystal itself, crystal is a relatively fragile material, which is easily broken or damaged by external impact, shock or high temperature. Therefore, during the crystal grinding process, the crystal material is often damaged. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a process for accurately controlling the grinding dimensions of vehicle-mounted crystal products, which has the advantages of reducing the damage rate of crystal cutting and grinding and improving the product factory qualification rate.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: A process for accurately controlling the grinding size of a vehicle-mounted crystal product, comprising the following steps: S1: Establish cutting areas, establish multiple independent cutting areas on the surface of the vehicle-mounted crystal product, and make distinctions in each cutting area to divide the cutting areas; S2: Obtain the distinguished cutting area, take a picture of the surface of the vehicle-mounted crystal product through a camera module to obtain the image information to be identified, and perform image preprocessing on the image information to be identified; S3: Preliminary cutting: sorting the identified cutting areas according to the acquired image information to be identified, and dividing the cutting areas by water jet cutting; S4: Establishing a polishing path, according to the acquired image information to be identified, converting the cutting area into a polishing area and marking them in sequence, and sorting the polishing order according to the marked areas, so as to construct a polishing path; S5: polishing control, correspondingly identifying and matching the symmetrical polishing areas along the central symmetry axis of the vehicle-mounted crystal product, and using the double set of polishing wheels to correspondingly identify and match the symmetrical polishing areas to perform polishing control of feed speed, running angle, force control size and moving away from each other; S6: Dimensional accuracy confirmation: the polished vehicle crystal product is scanned at multiple angles by using a structured light scanner, and the collected point cloud is converted into a point cloud format to obtain point cloud data in a universal format. The point cloud data is compared with the constructed original model in size, and a polishing dimension error threshold is set. For vehicle crystal products that are larger than the polishing dimension error threshold and are too large in size, restart the S5 step and polish again. For vehicle crystal products that are larger than the polishing dimension error threshold and are too small in size, the product is directly judged as unqualified.

[0008] Preferably, an infrared grid is projected on the surface of the vehicle-mounted crystal product, and the mapping coverage of the infrared grid on the surface of the vehicle-mounted crystal product is completed by adjusting the distance of the vehicle-mounted crystal product. Based on the division of the infrared grid, a cutting area is established on the surface of the vehicle-mounted crystal product.

[0009] Preferably, the surface of the vehicle-mounted crystal product is covered with oil-printed grid lines, and a cutting area is established on the surface of the vehicle-mounted crystal product based on the division of the oil-printed grid lines.

[0010] Preferably, based on the establishment of the cutting area of ​​the infrared grid, the surface of the vehicle-mounted crystal product is photographed by a camera module to obtain the image information to be identified, and the edge of the surface of the vehicle-mounted crystal product is first extracted by edge detection. After the identification frame of the vehicle-mounted crystal product, the image information to be identified is cropped around the vehicle-mounted crystal product in a fixed area, and then normalization, denoising, and color space conversion operations are performed in sequence.

[0011] Preferably, after preprocessing the image, different cutting areas are digitally marked, and then the order of the cutting areas is determined by sorting the marked numbers in order.

[0012] Preferably, the surface roughness of the vehicle-mounted crystal product after the grinding size calibration needs to be tested. By setting a threshold value for the surface roughness of the vehicle-mounted crystal product, the tested surface roughness is compared with the set threshold value for the surface roughness of the vehicle-mounted crystal product. If the surface roughness of the vehicle-mounted crystal product is within the threshold range, the quality of the vehicle-mounted crystal product will be judged to be qualified. If the surface roughness of the vehicle-mounted crystal product is not within the threshold range, the quality of the vehicle-mounted crystal product will be judged to be unqualified.

[0013] Preferably, before testing the surface roughness of the vehicle-mounted crystal product, it is cleaned and dried in sequence, and then a picture of the product to be tested is obtained. Based on the cracks and convex and concave points on the surface of the vehicle-mounted crystal product, the roughness of the crystal surface is calculated using the cracks and convex and concave points as weights.

[0014] Preferably, the roughness score is constructed by setting the cracks and convex and concave points as weight coefficients W C and W P , the scoring formula is: ; Where Nc is the total number of cracks, Np is the total number of convex and concave points, is the comprehensive roughness score.

[0015] In addition, the present application also provides an online measurement system, including the application of the above-mentioned precise control process for the polishing size of a vehicle-mounted crystal product, and also including an identification module, a cutting module, a polishing module, a control module and a scanning module. The identification module is used to pre-shoot the vehicle-mounted crystal product to obtain image information to be identified, and the acquired image information to be identified is used to analyze and identify the cutting area, and then the cutting module drives the water jet to sequentially cut the identified cutting area. After the cutting is completed, the polishing module is used to drive the double set of polishing wheels to polish the polishing area, and finally the scanning module confirms the polishing size of the vehicle-mounted crystal product after polishing.

[0016] In summary, the present invention has the beneficial effects of: 1. Due to the crystal structure and physical properties of the car crystal product itself, the car crystal product is a relatively fragile material. Therefore, by establishing a cutting area, the cutting area and the grinding area are accurately identified by using regional division, and the symmetrical grinding area is correspondingly identified and matched along the central symmetry axis of the car crystal product by controlling the grinding method. The feed speed, running angle, force control size and moving away from each other are controlled by using a double set of polishing wheels to correspond to the identified and matched symmetrical grinding areas, thereby improving the refined operation of the car crystal grinding and reducing the damage rate of crystal cutting and grinding; 2. After the car crystal product is polished, it is scanned at multiple angles by using a structured light scanner, and the collected point cloud is converted into a point cloud format to obtain point cloud data in a universal format. The point cloud data is compared with the constructed original model in size, and the polishing size error threshold is set. In this way, the polished car crystal product is tested for size compliance to improve the product's factory qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the shape and structure of a vehicle-mounted crystal product according to the first embodiment of the present invention; Figure 2 It is a schematic diagram of the production process flow of Embodiment 1 of the present invention; Figure 3 It is a schematic diagram of the electrical connection structure of the online measurement system of the second embodiment of the present invention.

[0018] Figure numerals: 1. Car-mounted crystal product; 2. Control module; 21. Identification module; 22. Cutting module; 23. Polishing module; 24. Scanning module. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0021] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] Example 1: A process for precisely controlling the grinding size of a vehicle-mounted crystal product, see Figure 1 and Figure 2 , including the following steps: S1: Establish cutting areas, establish multiple independent cutting areas on the surface of the vehicle-mounted crystal product 1, and make distinctions in each cutting area, so as to divide the cutting areas; S2: obtaining the distinguished cutting area, photographing the surface of the vehicle-mounted crystal product 1 through a camera module to obtain the image information to be identified, and performing image preprocessing on the image information to be identified; S3: Preliminary cutting: sorting the identified cutting areas according to the acquired image information to be identified, and dividing the cutting areas by water jet cutting; S4: Establishing a polishing path, according to the acquired image information to be identified, converting the cutting area into a polishing area and marking them in sequence, and sorting the polishing order according to the marked areas, so as to construct a polishing path; S5: polishing control, correspondingly identifying and matching the symmetrical polishing areas along the central symmetry axis of the vehicle-mounted crystal product 1, and using the double set of polishing wheels to correspondingly identify and match the symmetrical polishing areas to perform polishing control of the feed speed, running angle, and force control size moving away from each other; S6: Dimension accuracy confirmation: the polished vehicle crystal product 1 is scanned at multiple angles by using a structured light scanner, and the collected point cloud is converted into a point cloud format to obtain point cloud data in a universal format. The point cloud data is compared with the constructed original model in size, and a polishing dimension error threshold is set. For vehicle crystal products 1 that are larger than the polishing dimension error threshold and are too large in size, the S5 step is restarted for further polishing. For vehicle crystal products 1 that are larger than the polishing dimension error threshold and are too small in size, the product is directly judged as unqualified.

[0024] During the implementation of this embodiment, due to the crystal structure and physical properties of the vehicle-mounted crystal product 1 itself, the vehicle-mounted crystal product 1 is a relatively fragile material. Therefore, by establishing a cutting area, the cutting area and the grinding area are accurately identified by using the area division, and by controlling the grinding method, the symmetrical grinding areas are correspondingly identified and matched along the central symmetry axis of the vehicle-mounted crystal product 1, and the feeding speed, running angle, force control size and moving away from each other are controlled by using the double set of polishing wheels to correspond to the identified and matched symmetrical grinding areas, thereby improving the refined operation of the vehicle-mounted crystal grinding; After the car crystal product 1 is polished, a structured light scanner is used to perform multi-angle scanning, and the collected point cloud is converted into a point cloud format to obtain point cloud data in a universal format. The point cloud data is compared with the constructed original model in size, and a polishing size error threshold is set. In this way, the polished car crystal product 1 is tested for size compliance, thereby improving the product's factory qualification rate.

[0025] For example, the standard length of a crystal gear lever is 50.00 mm. Based on the production process and actual conditions, the error threshold can be set as follows: Error threshold: ±0.2mm, that is, the size range is 49.80mm to 50.20mm.

[0026] Specific operations: Oversized: If the scan data shows that the size of the polished crystal gear lever is larger than 50.20mm, the product is considered unqualified and needs to be re-polished.

[0027] Small size: If the scan data shows that the size of the polished crystal gear lever is less than 49.80mm, the product will be directly judged as unqualified and no correction will be made.

[0028] Size within tolerance: If the scan data shows that the polished crystal gear lever size is between 49.80mm and 50.20mm, it means that the product meets the standard and no further adjustment is required.

[0029] For example: 1. Compliance with standards: Scan data: 50.05mm Result: The size is within the range of ±0.2mm and is judged to meet the standard.

[0030] 2. Too big: Scan data: 50.35mm Result: The dimension is out of tolerance (> 50.20mm) and needs to be re-grinded.

[0031] 3. Too small: Scan data: 49.60mm Result: The dimension is lower than the tolerance range (< 49.80mm) and is judged as unqualified.

[0032] Before completing the cutting and polishing, the first step is to divide the surface of the vehicle-mounted crystal product 1 into areas. In this embodiment, an infrared grid is projected on the surface of the vehicle-mounted crystal product 1, and the distance of the vehicle-mounted crystal product 1 is adjusted to complete the mapping coverage of the infrared grid on the surface of the vehicle-mounted crystal product 1. Based on the division of the infrared grid, a cutting area is established on the surface of the vehicle-mounted crystal product 1.

[0033] The infrared grid projection of this embodiment is implemented based on structured light scanning, see Figure 1 Based on the division of the infrared grid, a cutting area is established on the surface of the vehicle-mounted crystal product 1, and the surface of the vehicle-mounted crystal product 1 is photographed by a camera module to complete the acquisition of the image information to be identified.

[0034] Alternatively, the surface of the vehicle-mounted crystal product 1 is covered with oil-printed grid lines, and a cutting area is established on the surface of the vehicle-mounted crystal product 1 based on the division of the oil-printed grid lines.

[0035] Obtain the image information to be identified, first extract the edge of the surface of the vehicle-mounted crystal product 1 through edge detection, and after the identification frame is defined based on the vehicle-mounted crystal product 1, crop the image information to be identified around the vehicle-mounted crystal product 1 in a fixed area, and then perform normalization, denoising, and color space conversion operations in sequence to complete the image preprocessing operation.

[0036] After that, the cutting is performed. First, different cutting areas are digitally marked, and then the order of the cutting areas is determined by sorting the marked numbers in order. After cutting, polishing is performed, and the cutting area is converted into a polishing area and marked in sequence. The polishing sequence is sorted according to the marked areas, so as to construct a polishing path and complete the polishing of the vehicle-mounted crystal product 1.

[0037] After polishing, the vehicle-mounted crystal product 1 is first cleaned and dried in sequence, and then the camera module is used to obtain the image of the product to be tested to prevent impurities caused by polishing or cutting from affecting the test result of the surface roughness of the vehicle-mounted crystal product 1.

[0038] Regarding the detection of the surface roughness of the vehicle-mounted crystal product 1, this embodiment sets a threshold value for the surface roughness of the vehicle-mounted crystal product 1, and compares the detected surface roughness with the set threshold value for the surface roughness of the vehicle-mounted crystal product 1. If the surface roughness of the vehicle-mounted crystal product 1 is within the threshold range, the quality of the vehicle-mounted crystal product 1 is judged to be qualified; if the surface roughness of the vehicle-mounted crystal product 1 is not within the threshold range, the quality of the vehicle-mounted crystal product 1 is judged to be unqualified.

[0039] By constructing the roughness score, the weight coefficient W is set by setting the cracks and convex and concave points as weights. C and W P , the scoring formula is: ; Where Nc is the total number of cracks, Np is the total number of convex and concave points, is the comprehensive roughness score.

[0040] In building the roughness calculation model, weights and influencing factors are set to build a comprehensive roughness scoring system. Crack influence factor Ci: Ci= Li: length of the i-th crack; Di: depth of the i-th crack; A: total area of ​​the measurement area Convex and concave point influence factor Pj: Ci= hj: height of the jth convex and concave point (positive value means convexity, negative value means concaveness); Aj: influence area of ​​the jth convex and concave point; A: total area of ​​the measurement area.

[0041] Assume that the measurement area A = 100 mm 2 , the following defects exist in this area: crack: The first crack: length L1 = 5 mm, depth D1 = 0.1 mm; The second crack: length L2 = 3 mm, depth D2 = 0.05 mm; Calculate the crack influence factor: C1=L1*D1\A=5*0.1\100=0.005; C2=L2*D2\A=3*0.05\100=0.0015 Convex and concave points: The first raised point: height h1 = 0.2 mm, affected area A1 = 1 mm 2 .

[0042] The second depression point: height h2 = −0.15 mm, affected area A2 = 0.8 mm 2 .

[0043] Calculate the influence factor of convex and concave points: P1=h1*A1\A=0.2*1\100=0.002.

[0044] P2=h2*A2\A=−0.15*0.8\100=−0.0012.

[0045] Assume that the crack weight W c =1, weight of convex and concave points W p =0.5, the roughness score is: R=W c *(C1+C2)+W p *(P1+P2); R=1*(0.005+0.0015)+0.5*(0.002−0.0012); R=0.0065+0.0004=0.0069.

[0046] In this way, the roughness score R=0.0069 can be used to compare the roughness of the surfaces of different car crystal products 1. The larger the roughness score value, the more obvious the surface roughness and the less smooth the surface.

[0047] By setting the cracks and convex and concave points on the surface of the vehicle-mounted crystal product 1 as weights and calculating the surface roughness in combination with these factors, the overall quality of the crystal surface can be evaluated more comprehensively.

[0048] Example 2: Based on the application of a precise control process for the grinding size of a car crystal product, see Figure 3 The difference between this embodiment and the first embodiment is that: an online measurement system is provided, including an identification module 21, a cutting module 22, a polishing module 23, a control module 2 and a scanning module 24. The identification module 21 is used to pre-shoot the vehicle-mounted crystal product 1 to obtain the image information to be identified, and the obtained image information to be identified is used to analyze and identify the cutting area, and then the cutting module 22 drives the water jet to sequentially cut the identified cutting area. After the cutting is completed, the polishing module 23 is used to drive the double-group polishing wheel to polish the polishing area, and finally the scanning module 24 confirms the polishing size of the vehicle-mounted crystal product 1 after polishing.

[0049] Due to the strict requirements on the quality and size of the vehicle-mounted crystal product 1, online measurement of its size will be achieved.

[0050] The recognition module 21 is responsible for processing the image of the object to be processed and extracting information such as the target area, cutting path and surface features. The output of the recognition module 21 is a clear cutting area coordinate and corresponding cutting path data. These data will be transmitted to the cutting module 22 via a data bus or communication protocol.

[0051] Transmission of recognition results and cutting paths: The recognition module 21 transmits the cutting area, path coordinates and related processing parameters, such as cutting depth, angle and other processing parameters to the cutting module 22. The cutting module 22 drives the water jet to perform preliminary cutting operations based on this information.

[0052] The grinding module 23 converts the cutting area marked by the identification module 21 into a grinding area. The identification module 21 transmits the grinding area, path coordinates and related processing parameters, such as feed speed, running angle, force control size and other processing parameters to the grinding module 23. The grinding module 23 drives the double set of polishing wheels for grinding control based on this information.

[0053] The control module 2 is the "brain" of the entire system and is responsible for coordinating the work of each module. It receives status information from the recognition module 21, cutting module 22, polishing module 23, etc., makes decisions and sends control signals. The control module 2 determines the working order, parameter adjustment and status synchronization of each module according to the preset logic.

[0054] The scanning module 24 is used to scan the surface shape and size of the vehicle-mounted crystal product. The output data of the scanning module 24 is the three-dimensional surface data of the current vehicle-mounted crystal product 1, which is compared with the three-dimensional surface data of the original model size to identify whether the size quality of the current vehicle-mounted crystal product 1 is qualified.

[0055] The rest of this embodiment is the same as the first embodiment. The features not explained in this embodiment are all based on the explanations in the first embodiment and will not be described in detail here.

[0056] The above embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A process for precisely controlling the grinding size of a vehicle-mounted crystal product, characterized by: The following steps are involved: S1: Establish cutting areas, establish multiple independent cutting areas on the surface of the vehicle-mounted crystal product, and make distinctions in each cutting area to divide the cutting areas; S2: Obtain the distinguished cutting area, take a picture of the surface of the vehicle-mounted crystal product through a camera module to obtain the image information to be identified, and perform image preprocessing on the image information to be identified; S3: Preliminary cutting: sorting the identified cutting areas according to the acquired image information to be identified, and dividing the cutting areas by water jet cutting; S4: Establishing a polishing path, according to the acquired image information to be identified, converting the cutting area into a polishing area and marking them in sequence, and sorting the polishing order according to the marked areas, so as to construct a polishing path; S5: polishing control, correspondingly identifying and matching the symmetrical polishing areas along the central symmetry axis of the vehicle-mounted crystal product, and using the double set of polishing wheels to correspondingly identify and match the symmetrical polishing areas to perform polishing control of feed speed, running angle, force control size and moving away from each other; S6: Dimensional accuracy confirmation: the polished vehicle crystal product is scanned at multiple angles by using a structured light scanner, and the collected point cloud is converted into a point cloud format to obtain point cloud data in a universal format. The point cloud data is compared with the constructed original model in size, and a polishing dimension error threshold is set. For vehicle crystal products that are larger than the polishing dimension error threshold and are too large in size, restart the S5 step and polish again. For vehicle crystal products that are larger than the polishing dimension error threshold and are too small in size, the product is directly judged as unqualified.

2. According to the process for accurately controlling the grinding size of a vehicle-mounted crystal product according to claim 1, it is characterized by: An infrared grid is projected on the surface of the car crystal product. By adjusting the distance of the car crystal product, the infrared grid is mapped and covered on the surface of the car crystal product. Based on the division of the infrared grid, a cutting area is established on the surface of the car crystal product.

3. According to claim 1, a process for precisely controlling the grinding size of a vehicle-mounted crystal product is characterized by: Use oil printing to cover the oil printing grid lines on the surface of the car crystal product, and establish a cutting area on the surface of the car crystal product based on the division of the oil printing grid lines.

4. According to claim 2, a process for precisely controlling the grinding size of a vehicle-mounted crystal product is characterized by: Based on the establishment of the cutting area by the infrared grid, the surface of the car crystal product is photographed by the camera module to obtain the image information to be identified. The edge of the surface of the car crystal product is first extracted by edge detection. After the identification frame of the car crystal product, the image information to be identified is cropped around the car crystal product in a fixed area, and then normalization, denoising, and color space conversion operations are performed in sequence.

5. According to claim 4, a process for precisely controlling the grinding size of a vehicle-mounted crystal product is characterized by: After preprocessing the image, different cutting areas are digitally marked, and then the order of the cutting areas is determined by sorting the marked numbers in order.

6. The process for precisely controlling the grinding size of a vehicle-mounted crystal product according to claim 1 is characterized by: The surface roughness of the vehicle-mounted crystal product after the grinding size calibration needs to be tested. By setting the threshold of the surface roughness of the vehicle-mounted crystal product, the tested surface roughness is compared with the set threshold of the surface roughness of the vehicle-mounted crystal product. If the surface roughness of the vehicle-mounted crystal product is within the threshold range, the quality of the vehicle-mounted crystal product will be judged to be qualified. If the surface roughness of the vehicle-mounted crystal product is not within the threshold range, the quality of the vehicle-mounted crystal product will be judged to be unqualified.

7. The process for precisely controlling the grinding size of a vehicle-mounted crystal product according to claim 6 is characterized by: Before testing the surface roughness of the car crystal product, the product is cleaned and dried in sequence, and then a picture of the product to be tested is obtained. Based on the cracks and convex and concave points on the surface of the car crystal product, the roughness of the crystal surface is calculated using the cracks and convex and concave points as weights.

8. The process for precisely controlling the grinding size of a vehicle-mounted crystal product according to claim 7 is characterized by: Construct the roughness score by setting the cracks and convex and concave points as weight coefficients W C and W P , the scoring formula is: ; Where Nc is the total number of cracks, Np is the total number of convex and concave points, is the comprehensive roughness score.

9. An online measurement system, characterized in that: It includes an application of a precise control process for the polishing size of a vehicle-mounted crystal product as described in claim 1, and also includes an identification module, a cutting module, a polishing module, a control module and a scanning module. The identification module is used to pre-shoot the vehicle-mounted crystal product to obtain image information to be identified, and the acquired image information to be identified is used to analyze and identify the cutting area. The cutting module then drives the water jet to sequentially cut the identified cutting area. After the cutting is completed, the polishing module is used to drive the double sets of polishing wheels to polish the polishing area. Finally, the scanning module confirms the polishing size of the vehicle-mounted crystal product after polishing.

Images