Curved surface cover plate profile tolerance inspection jig

Abstract

The utility model discloses a curved surface cover plate profile tolerance inspection jig, which comprises a profiling base, a positioning mechanism and a detection mechanism, and is characterized in that the profiling base is provided with a product placement area matched with a standard surface of a first surface of a to-be-detected product; the positioning mechanism is arranged at the edge of the product placement area and is used for positioning the to-be-detected product to the product placement area; the detection mechanism comprises a detection sliding plate which has a first state away from the product placement area; and in the second state, the detection slide plate moves above the product placement area in a sliding manner, so that the detection slide plate is partially or completely positioned above the product placement area. According to the utility model, whether the edge contour of a product to be detected is qualified or not can be quickly sensed by detecting whether the sliding stroke of the sliding plate has interference or jamming or other states or not, defective products can be quickly detected, the detection time of a single product is greatly shortened, full detection can be realized, and the defective products are effectively prevented from flowing into downstream procedures.

Description

Technical Field

[0001] The utility model relates to the technical field of cover plate detection, in particular to a curved cover plate contour detection jig. Background Art

[0002] In the process of application and development of automotive curved screens, in pursuit of aesthetics, the design forms are becoming more and more diverse, with large-size, high-arc, and special-shaped products appearing one after another. Car curved glass products are generally large, and they also face new difficulties when facing contour detection. The detection efficiency is low when the size is too large, and the contour is considered a key management project because it is related to the subsequent screen bonding. In addition, due to the influence of hot bending and strengthening during processing, the risk of contour NG is relatively high, which brings difficulties to quality management.

[0003] In actual production, for vehicle-mounted curved cover plates, contour detection is usually performed after hot bending and strengthening. Currently, the surface contour is controlled by three-dimensional measurement points. The efficiency of three-dimensional measurement is extremely low, and a single piece takes 10-20 minutes. As the product size increases, the number of measurement points increases, and the measurement time increases accordingly. In actual operation, three-dimensional coordinate equipment is expensive, ranging from hundreds of thousands. The larger the size, the more expensive it is. Due to the problem of detection efficiency, only random inspection can be used, resulting in a great risk of missed inspections when shipping products. When abnormalities occur on the high-speed production line, a large number of products will be scrapped because the problem is not discovered in time.

[0004] The patent application with application number 202311295195.2 discloses a glass contour detection device, which detects the glass contour by placing the curved glass vertically through a support structure and a clamping mechanism. The entire structure is relatively complex and the cost is high. In addition, the vertically placed curved glass has a high risk of edge breakage and damage during the detection process, resulting in a decrease in the product qualification rate.

[0005] Based on this, the existing technology still needs to be improved. Utility Model Content

[0006] In order to solve the above technical problems, the embodiment of the utility model proposes a curved cover plate profile inspection jig to solve the technical problems of the curved glass inspection device in the prior art having a complex structure and high cost.

[0007] In order to solve the above technical problems, some embodiments of the utility model disclose a curved cover plate profile inspection jig, comprising a profiling base, a positioning mechanism and a detection mechanism, wherein the profiling base has a product placement area adapted to a standard surface of a first surface of a product to be detected;

[0008] The positioning mechanism is arranged at the edge of the product placement area and is used to position the product to be tested on the product placement area;

[0009] The detection mechanism includes a detection slide plate, which has:

[0010] The first state is far away from the product placement area;

[0011] And the detection slide plate is slidably moved above the product placement area to a second state where part or all of the detection slide plate is located above the product placement area.

[0012] In some embodiments, the positioning mechanism includes at least three positioning bosses, and the three positioning bosses are respectively located on at least two sides of the product placement area.

[0013] In some embodiments, the detection mechanism further includes a measuring groove and a sliding block, the measuring groove is multiple, and the multiple measuring grooves are arranged at the edge of the product placement area and close to the measuring point of the product to be detected;

[0014] The sliding block is located in the measuring groove, and a sliding groove is arranged on the sliding block, and the detection slide plate can be slidably arranged in the sliding groove;

[0015] The sliding direction of the slideway is the tangent or extension line of the upper surface of the standard part of the product to be tested at the measuring point;

[0016] The height of the lower surface of the detection slide is made equal to the height of the product placement area at the measuring point plus the thickness and tolerance thickness of the standard part of the product to be detected at the measuring point.

[0017] In some embodiments, the plane where the bottom of the chute is located is a tangent line or an extension line of the upper surface of the standard part of the product to be tested at the measuring point;

[0018] The height of the bottom of the chute is equal to the height of the product placement area plus the thickness of the standard part of the product to be tested at the measuring point and the tolerance thickness;

[0019] In addition, the bottom end of the detection slide plate is in close contact with the bottom of the slide groove.

[0020] In some embodiments, the detection slide plate is detachably disposed in the slide groove.

[0021] In some embodiments, the slider includes:

[0022] An inserting portion inserted into the measuring groove;

[0023] An extension portion formed by the insertion portion extending upward;

[0024] and, two side walls of the slide groove formed on the upper surface of the extension portion;

[0025] The upper surface of the extension portion between the two side walls forms the groove bottom of the slide groove.

[0026] In some embodiments, the thickness of the extension portion is equal to the height of the product placement area at the measuring point plus the thickness of the standard part of the product to be tested at the measuring point and the tolerance thickness.

[0027] In some embodiments, the difference between the gap width between the two side walls and the thickness of the detection slide plate is 0-0.05 mm.

[0028] In some embodiments, the value of the tolerance thickness at the measuring point in the plane area is 0.3 mm; the value of the tolerance thickness at the measuring point in the curved area is 0.5 mm.

[0029] In some embodiments, the sliding block has multiple models adapted to various curved cover plates;

[0030] Alternatively, the lower end of the extension portion and the upper end of the insertion portion are detachably connected, and the extension portion has multiple models adapted to multiple curved cover plates;

[0031] Alternatively, the detection slide plate has a semicircular front end.

[0032] By adopting the above technical solution, the utility model has at least the following beneficial effects:

[0033] The utility model provides a curved cover plate contour inspection jig, which is provided with a contoured base and a detection slide slidably mounted thereon. By sliding the detection slide, it is possible to quickly sense whether the edge contour of the product to be inspected is qualified according to whether there is interference or jamming in the sliding stroke of the detection slide, and defective products can be quickly detected. The inspection time of a single-piece product is greatly reduced, full inspection can be achieved, and defective products can be effectively prevented from flowing into downstream processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the structure of a curved cover plate profile inspection jig disclosed in some embodiments of the utility model;

[0036] Figure 2 A side view of a curved cover plate profile inspection jig disclosed in some embodiments of the utility model;

[0037] Figure 3 for Figure 2 A partial enlarged view of part A;

[0038] Figure 4 for Figure 2 A partial enlarged view of part B;

[0039] Figure 5 A top view of a curved cover plate profile inspection jig disclosed in some embodiments of the utility model;

[0040] Figure 6 A state diagram of a curved cover plate profile inspection jig during inspection disclosed in some embodiments of the utility model;

[0041] Figure 7 This is a state diagram of a curved cover plate profile inspection jig during inspection disclosed in some embodiments of the utility model.

[0042] Description of reference numerals:

[0043] 1. Contour base; 2. Product placement area; 3. Positioning boss; 4. Measuring groove; 5. Detection slide; 6. Sliding block; 7. Extension; 8. Product to be detected; 9. Side wall. DETAILED DESCRIPTION

[0044] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0045] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0046] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure 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 operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0047] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0048] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0049] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0050] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0051] like Figures 1 to 7As shown, some embodiments of the utility model disclose a jig for testing the contour of curved cover plates. For curved cover plates, it is limited to products with uniaxial bending and does not limit the bending shape, that is, it is sufficient to ensure that the contour of the front projection surface coincides with a curve, that is, when the sliding plate moves along the guide groove in the front view, the lowest measurement always maintains the same height as the jig surface, so that the accuracy of the product edge contour measurement can be ensured. It includes a profiling base 1, a positioning mechanism and a detection mechanism, wherein the profiling base 1 has a product placement area 2 that is adapted to the standard surface of the first surface of the product 8 to be detected. The function of the profiling base 1 is, on the one hand, to place the product 8 to be detected so that the first surface of the product 8 to be detected can be adapted and placed in the product placement area 2, and on the other hand, it provides a basis for fixing the positioning mechanism and the detection mechanism; the positioning mechanism is arranged at the edge of the product placement area 2, and is used to position the product 8 to be detected on the product placement area 2; the positioning mechanism can adopt a multi-point positioning method, for example, it can include three positioning bosses 3, and the three positioning bosses 3 are respectively located on at least two sides of the product placement area 2. Generally, as Figure 1 As shown, three positioning bosses 3 are respectively located on two adjacent sides of the product 8 to be detected, two positioning bosses 3 are arranged on one side to limit the position and angle of the side of the product 8 to be detected, and one positioning boss 3 is arranged on the other side to limit the specific position of the product 8 to be detected. The detection mechanism may include a detection slide 5, and the detection slide 5 has: a first state away from the product placement area 2; and a second state in which the detection slide 5 slides upward toward the product placement area 2 so that part or all of the detection slide 5 is located above the product placement area 2.

[0052] In the first state, the detection slide 5 does not intersect with the product placement area 2, so the product 8 to be detected can be conveniently placed in the product placement area 2 and accurately positioned by the positioning mechanism. Under the dual effects of the contoured surface of the product placement area 2 and the positioning mechanism, the placement accuracy of the product 8 to be detected can be guaranteed, thereby effectively avoiding the occurrence of inaccurate detection results caused by the placement error of the product 8 to be detected. The detection process of the product 8 to be detected is actually the process of the detection slide 5 running from the first state to the second state. During the operation, at least part of the lower surface of the detection slide 5 needs to pass through the edge of the measurement point of the product 8 to be detected. If the contour of the product 8 to be detected at the measurement point meets the process flow, the detection slide 5 will not touch the edge of the product 8 to be detected, that is, the detection personnel perceive that the detection slide 5 smoothly completes the detection stroke, and the contour of the product 8 to be detected at the measurement point meets the requirements, and then the same operation method is used to measure other measurement points, and finally the contour detection of the product 8 to be detected is completed.

[0053] In this embodiment, a contoured base 1 is provided to cooperate with a detection slide 5 slidably mounted thereon, and by detecting the sliding of the detection slide 5, whether there is interference or jamming in the sliding stroke of the detection slide 5 can be quickly sensed, so that defective products can be quickly detected, the inspection time of a single-piece product is greatly reduced, full inspection can be achieved, and defective products can be effectively prevented from flowing into downstream processes.

[0054] The curved cover plate contour inspection jig disclosed in some embodiments of the utility model, on the basis of the above-mentioned embodiments, in order to ensure the accuracy of the installation of the detection slide 5 and avoid inaccurate detection results caused by the stroke error of the detection slide 5, the detection mechanism also includes a measuring groove 4 and a sliding block 6, there are multiple measuring grooves 4, and the multiple measuring grooves 4 are arranged at the edge of the product placement area 2 and close to the measurement point of the product 8 to be detected; the sliding block 6 is located in the measuring groove 4, and a sliding groove is provided on the sliding block 6, and the detection slide 5 can be slidably arranged in the sliding groove; the sliding direction of the sliding groove is the tangent or extension line of the upper surface of the standard part of the product to be detected 8 at the measurement point; the height of the lower surface of the detection slide 5 is equal to the height of the product placement area 2 at the measurement point plus the thickness of the standard part of the product to be detected 8 at the measurement point and the tolerance thickness.

[0055] Generally, the measuring groove 4 can be set to be a certain distance from the product placement area 2, or arranged close to the product placement area 2. According to the detection needs, multiple measuring grooves 4 can be set at different positions. When in use, select a suitable sliding block 6 according to the model of the product 8 to be detected and insert it into the measuring groove 4. Generally, an inspection fixture can use one sliding block 6 or multiple sliding blocks 6. When using one sliding block 6, it is necessary to perform plugging and unplugging actions on each measuring groove 4. If each measuring groove 4 has been matched and installed with a sliding block 6, it can be directly tested. Although the cost of the detection fixture is increased, it can improve the detection efficiency to a certain extent. In production, it can be designed according to the production volume of the corresponding product 8 to be detected.

[0056] In some specific implementation schemes, the height of the lower surface of the detection slide 5, i.e., the detection height, is controlled by the height of the bottom of the chute. Specifically, the plane where the bottom of the chute is located is the tangent or extension line of the upper surface of the standard part of the product to be detected 8 at the measuring point; the height of the bottom of the chute is equal to the height of the product placement area 2 plus the thickness and tolerance thickness of the standard part of the product to be detected 8 at the measuring point; and the bottom end of the detection slide 5 is close to the bottom of the chute. The detection slide 5 can be arranged in the chute in a detachable connection. Similarly, an inspection fixture only needs to be equipped with one detection slide 5. The detection slide 5 passes through the chute on different sliding blocks 6 to detect different measurement points. To achieve this technical effect, the sliding block 6 can include an insertion portion inserted into the measuring groove 4; an extension portion 7 formed by the insertion portion extending upward; and two side walls 9 of the chute formed on the upper surface of the extension portion 7; the upper surface of the extension portion 7 between the two side walls 9 forms the bottom of the chute. That is, the groove bottom height is adapted to the height of the standard part as the detection height, and the thickness of the extension part 7 is equal to the height of the product placement area 2 at the measurement point plus the thickness of the standard part of the product to be detected 8 at the measurement point and the tolerance thickness. Different surface profile requirements can be set for different point areas, such as Figure 4 In the plane area shown, the surface contour requirement is 0.3mm, and the tolerance thickness at the measuring point in the plane area is 0.3mm; Figure 3 In the curved area shown, the surface contour requirement is 0.5mm, and the value of the tolerance thickness at the measuring point in the curved area is 0.5mm. If the product 8 to be detected is a standard product with a surface contour, the detection slide plate 5 always maintains a distance of 0.5mm from the upper surface of the product during the sliding process. If the contour of the product at this point is warped between 0-0.5mm in actual use, the sliding plate will never contact the product during the sliding process from the edge to the inside. If the contour of the product at this point exceeds 0.5mm, the sliding plate will interfere with the product when sliding from the outside to the inside, which will cause a tactile jam. Therefore, the quality of the contour of the point can be determined, and defective products can be screened in time. The same is true for plane area measurement. The detection slide plate 5 can be designed to have a semicircular front end. This design can effectively avoid damaging the product 8 to be detected when the front end interferes with the defective product. In addition, the bottom of the detection slide plate 5 can also be designed as a semicircle, and the contact area with the product 8 to be detected is small, which can provide a detection sense of touch and avoid damage to the product 8 to be detected to a large extent.

[0057] The curved cover plate profile inspection jig disclosed in some embodiments of the utility model is based on the above embodiments that the base of the profiling jig needs to be made of a material that is not easy to deform, which can be metal or plastic. The surface of the jig has a profiling surface that is completely consistent with the theoretical concave surface of the product. More than three positioning bosses 3 can be designed in the X and Y axes for positioning when the product is placed. After the product is accurately placed, multiple contour measurement points can be set in the circumferential area as needed, and the corresponding measurement groove 4 is designed. There is a certain distance between the measurement groove 4 and the product to ensure that the product size is not affected when it fluctuates. The sliding block 6 is matched and installed with the measurement groove 4, and there is a fixed axial guide groove (slide groove) for the detection slide 5 to slide along a fixed track, and the guide groove and the detection slide 5 maintain a relatively accurate position. The sliding blocks 6 at different positions of the plane and curved surface of the jig may have certain size differences, but they can all match the same detection slide 5. The bottom of the detection slide 5 is a semicircular design, and there is a gap of 0-0.05 between the detection slide 5 and the guide groove, that is, the difference between the gap width between the two side walls 9 and the thickness of the detection slide 5 is 0-0.05mm. It can ensure both smooth sliding and movement accuracy. During the movement, the bottom of the detection slide 5 and the surface of the contour base 1 always maintain a fixed distance, which is the product thickness plus the size of the contour limit tolerance. Each fixture may only require one detection slide 5, which can be used with all the sliding blocks 6 of the fixture. It can be set that the sliding block 6 has multiple models suitable for various curved cover plates; or the lower end of the extension part 7 of the sliding block 6 and the upper end of the insertion part are detachably connected, and the extension part 7 has multiple models suitable for various curved cover plates; thereby effectively increasing the scope of use of the same measuring fixture.

[0058] Some embodiments of the utility model disclose a jig for testing the contour of a curved cover plate, comprising a profiling base 1, a measuring groove 4, a positioning boss 3, a sliding block 6, a detection slide 5, and a product to be tested 8. The large surface of the profiling jig base (profiling base 1) is consistent with the standard surface of the concave surface of the product, and there are a total of 3 positioning bosses 3 in the X-axis and Y-axis directions for product placement and positioning. The surface of the profiling base 1 has a measuring groove 4 for measuring contour points, a sliding block 6 with a slide groove is placed in the measuring groove 4, and a detection slide 5 is placed in the slide groove of the sliding block 6. After the detection slide 5 is placed, the minimum distance between the detection slide 5 and the theoretical standard surface of the product is the distance of the contour tolerance. After the product is placed, the detection slide 5 slides toward the inside of the product. If the detection slide 5 is blocked from the product and has a tactile contact, it means that the contour exceeds the design specifications and is unqualified. If the product is qualified, there is always a gap and no contact between the detection slide 5 and the product during the sliding process. This embodiment can quickly detect the edge surface contour of the product at multiple points, is simple to operate, and is suitable for large-scale contour inspection.

[0059] The method of use is: arrange the measuring points in advance, and set different contour measurement requirements at different points, such as 0.3mm for flat area, 0.5mm for curved area, and 1.3mm for product thickness. Figures 1 to 7 As shown in the design and processing, the detection slide 5 is slid along the projection direction of the product edge to ensure that the bottom of the detection slide 5 is always at a constant distance from the fixture, the plane area is 1.6mm, that is, the product is 1.3mm plus the tolerance of 0.3mm, and it is put into use after being confirmed by measurement. When in use, first place the product on the product placement area 2 of the profiling base 1, and lean against the three-point positioning boss 3 to ensure the product placement position, and then the detection slide 5 slides along the slide groove from the outside of the product to the inside of the product in each sliding block 6. When the detection slide 5 is close to the product, such as Figure 6 , Figure 7 As shown, the lowest point is lower than the product, and there is impact interference during sliding, which will produce an obvious tactile sensation. When the detection slide plate 5 has tactile contact with the product, it means that the surface contour of the product exceeds the tolerance of 0.3mm, and it is unqualified. If each measuring point can slide smoothly without contacting the product, it means that the product is qualified. The utility model can introduce full inspection in the production line, inspect one piece at a time, quickly detect and determine the contour status, and is suitable for large-scale full inspection and screening. The operation is simple and fast, and can effectively make preliminary identification in production, and promptly discover problems and NG positions. Compared with the existing three-dimensional dot detection, the measurement time is greatly shortened and the efficiency is greatly improved.

[0060] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0061] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A curved cover plate profile inspection jig, characterized in that: It comprises a contour base (1), a positioning mechanism and a detection mechanism, wherein the contour base (1) has a product placement area (2) adapted to a standard surface of a first surface of a product (8) to be detected; The positioning mechanism is arranged at the edge of the product placement area (2) and is used to position the product to be detected (8) on the product placement area (2); The detection mechanism comprises a detection slide plate (5), wherein the detection slide plate (5) has: A first state away from the product placement area (2); And slidingly moving above the product placement area (2) so that the detection slide plate (5) is partially or completely located above the product placement area (2) in a second state.

2. The curved cover plate profile inspection jig according to claim 1, characterized in that: The positioning mechanism comprises at least three positioning bosses (3), and the three positioning bosses (3) are respectively located on at least two sides of the product placement area (2).

3. The curved cover plate profile inspection jig according to claim 1, characterized in that: The detection mechanism further comprises a measuring groove (4) and a sliding block (6); the measuring groove (4) is multiple, and the multiple measuring grooves (4) are arranged at the edge of the product placement area (2) and close to the measuring point of the product to be detected (8); The sliding block (6) is located in the measuring groove (4), and a sliding groove is provided on the sliding block (6), and the detection slide plate (5) can be slidably arranged in the sliding groove; The sliding direction of the slide groove is the tangent line or the extension line of the upper surface of the standard part of the product (8) to be tested at the measuring point; The height of the lower surface of the detection slide plate (5) is equal to the height of the product placement area (2) at the measurement point plus the thickness and tolerance thickness of the standard part of the product (8) to be detected at the measurement point.

4. The curved cover plate profile inspection jig according to claim 3, characterized in that: The plane where the bottom of the chute is located is a tangent line or an extension line of the upper surface of the standard part of the product (8) to be tested at the measuring point; The height of the bottom of the chute is equal to the height of the product placement area (2) plus the thickness of the standard part of the product to be tested (8) at the measuring point and the tolerance thickness; Furthermore, the bottom end of the detection slide plate (5) is in close contact with the bottom of the slide groove.

5. The curved cover plate profile inspection jig according to claim 3, characterized in that: The detection slide plate (5) is detachably arranged in the slide groove.

6. The curved cover plate profile inspection jig according to claim 3 or 4, characterized in that: The sliding block (6) comprises: An insertion portion inserted into the measuring groove (4); An extension portion (7) formed by extending the insertion portion upward; and two side walls (9) of the slide groove formed on the upper surface of the extension portion (7); The upper surface of the extension portion (7) between the two side walls (9) forms the bottom of the slide groove.

7. The curved cover plate profile inspection jig according to claim 6, characterized in that: The thickness of the extension portion (7) is equal to the height of the product placement area (2) at the measuring point plus the thickness of the standard part of the product to be tested (8) at the measuring point and the tolerance thickness.

8. The curved cover plate profile inspection jig according to claim 6, characterized in that: The difference between the gap width between the two side walls (9) and the thickness of the detection slide plate (5) is 0-0.05 mm.

9. The curved cover plate profile inspection jig according to claim 3 or 4, characterized in that: The value of the tolerance thickness at the measuring point in the plane area is 0.3 mm; the value of the tolerance thickness at the measuring point in the curved area is 0.5 mm.

10. The curved cover plate profile inspection jig according to claim 6, characterized in that: The sliding block (6) has multiple models suitable for various curved cover plates; Alternatively, the lower end of the extension portion (7) and the upper end of the insertion portion are detachably connected, and the extension portion (7) has a plurality of models adapted to a plurality of curved cover plates; Alternatively, the detection slide plate (5) has a semicircular front end.

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