Composite testing fixture

Abstract

The utility model discloses a composite testing fixture, which is applied to a to-be-tested product comprising at least one to-be-tested hole, and comprises a first detection plate, a second detection plate and a plurality of aperture detection assemblies. Wherein a plurality of first through holes are formed in the first detection plate at intervals in the first direction, the first detection plate is arranged on the second detection plate, a plurality of first grooves and second grooves are formed in the second detection plate at intervals in the first direction, each first groove is partially overlapped with the corresponding first through hole, and each second groove is overlapped with the corresponding first through hole; the first through hole, the first groove and the second groove are matched for use so as to detect the contour of the product to be detected; and the plurality of aperture detection assemblies are arranged on the second detection plate, penetrate through the first through holes and are used for detecting to-be-detected holes of the to-be-detected product. Through the composite testing fixture, the contour of the to-be-tested product and the to-be-tested hole on the to-be-tested product can be detected at the same time, so that the detection efficiency is improved, and the time cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of gauges, in particular to composite gauges. Background Art

[0002] Before a product is put into use, it is necessary to conduct factory inspection to determine whether the product is qualified. Some structural parts, such as the shells of electronic devices such as mobile phones and tablets, are equipped with side holes. Factory inspection for structural parts usually includes contour inspection, side hole inspection, etc.

[0003] The relevant inspection tools can only perform one kind of inspection on the product. For example, the contour inspection tool can only detect the contour of the product, and the side hole inspection tool can only detect the side hole of the product. Different inspection tools need to be replaced, and it is impossible to perform multiple inspections on the product at the same time. The inspection process is complicated, the efficiency is low, and the cost is high. Utility Model Content

[0004] The present application provides a composite inspection tool, which can simultaneously inspect the contour of a product to be inspected and the holes to be inspected on the product to be inspected, thereby improving inspection efficiency and reducing inspection time.

[0005] In order to solve the above technical problems, the present application provides a composite inspection tool on the one hand, which is applied to the product to be tested, and the product to be tested includes at least one hole to be tested, and the composite inspection tool includes a first inspection plate, a second inspection plate and a plurality of aperture detection components. Among them, the first inspection plate is provided with a plurality of first through holes at intervals in the first direction, the first inspection plate is provided on the second inspection plate, and the second inspection plate is provided with a plurality of first grooves and second grooves at intervals in the first direction, each first groove partially overlaps with the corresponding first through hole, and each second groove overlaps with the corresponding first through hole; the first through hole, the first groove and the second groove are used in combination to detect the contour of the product to be tested; a plurality of aperture detection components are provided on the second inspection plate and pass through the first through hole, and the aperture detection components are used to detect the holes to be tested of the product to be tested.

[0006] In some embodiments, a plurality of inspection grooves are further provided on the second inspection plate, and the opening of each inspection groove faces the first groove; the product to be tested passes through the first through hole, and passes through at least a portion of the first groove and at least a portion of the second groove, and the product to be tested abuts against the corresponding inspection groove so that the contour of the product to be tested is detected through the inspection groove.

[0007] In some embodiments, any two of the multiple detection slots are symmetrically arranged; the symmetrically arranged detection slots are used to detect the concentricity of the product to be tested.

[0008] In some embodiments, the second detection plate is also provided with a plurality of third grooves, the plurality of third grooves are arranged at intervals, the first groove, the second groove and the third groove are arranged at intervals in the second direction, and the second direction is perpendicular to the first direction; each aperture detection component includes a first fixing part and an aperture detection part, the first fixing part is arranged in the third groove; a section of the aperture detection part abuts against the first fixing part, and the other end of the aperture detection part passes through the first through hole, and the aperture detection part is used to detect the size of the hole to be measured.

[0009] In some embodiments, the first fixing member is provided with a fourth groove, and one end of the aperture detection member is disposed in the fourth groove.

[0010] In some embodiments, the aperture detector comprises a pin gauge.

[0011] In some embodiments, each first through hole includes a first sub-through hole, a second sub-through hole and a third sub-through hole; the second sub-through hole and the third sub-through hole are respectively arranged on opposite sides of the first sub-through hole, the second sub-through hole and the third sub-through hole are respectively interconnected with the first sub-through hole, the first sub-through hole overlaps with the corresponding first groove part, and the second sub-through hole overlaps with the corresponding second groove.

[0012] In some embodiments, any two first through holes among the plurality of first through holes are symmetrically arranged; the symmetrically arranged first through holes are used to detect the concentricity of the product to be tested.

[0013] In some embodiments, a plurality of second through holes are provided on the first detection plate, and a plurality of fifth grooves are further provided on the second detection plate, and the fifth grooves are arranged corresponding to the second through holes; the composite inspection fixture also includes a plurality of fixing components, at least part of the fixing components are arranged in the fifth grooves, and at least part of the fixing components pass through the second through holes to fix the first detection plate on the second detection plate.

[0014] In some embodiments, each fixing assembly includes a second fixing member and a third fixing member, the second fixing member is disposed in the fifth groove, one end of the third fixing member abuts against the second fixing member, and the other end of the third fixing member passes through the second through hole.

[0015] The composite inspection tool provided in some embodiments of the present application includes a first inspection plate, a second inspection plate and a plurality of aperture detection components. Among them, the first inspection plate is provided with a plurality of first through holes spaced apart in the first direction, the first inspection plate is provided on the second inspection plate, and the second inspection plate is provided with a plurality of first grooves and second grooves spaced apart in the first direction, each first groove partially overlaps with the corresponding first through hole, and each second groove overlaps with the corresponding first through hole; the first through hole, the first groove and the second groove are used in combination to detect the contour of the product to be tested; a plurality of aperture detection components are provided on the second inspection plate and pass through the first through hole, and the aperture detection component is used to detect the holes to be tested of the product to be tested. The above-mentioned composite inspection tool can detect the contour of the product to be tested and the holes to be tested of the product to be tested at the same time. The integrated design can not only improve the detection efficiency, but also save the detection time, thereby saving the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0017] Figure 1 is a schematic diagram of a composite inspection tool provided in some embodiments of the present application;

[0018] Figure 2 is a schematic diagram of a first detection board provided in some embodiments of the present application;

[0019] Figure 3 is a schematic diagram of a second detection board provided in some embodiments of the present application;

[0020] Figure 4 is a schematic diagram of an aperture detection assembly provided in some embodiments of the present application;

[0021] Figure 5 is a schematic diagram of a composite inspection tool provided in some embodiments of the present application;

[0022] Figure 6 is a schematic diagram of a fixing assembly provided in some embodiments of the present application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0024] See also Figure 1 , Figure 1 1 is a schematic diagram of a composite gauge provided in some embodiments of the present application. The composite gauge 10 can be applied to a product to be tested, and the product to be tested includes at least one hole to be tested.

[0025] The composite inspection tool 10 includes a first inspection plate 101, a second inspection plate 102 and a plurality of aperture detection components 103. The first inspection plate 101 is provided with a plurality of first through holes H1 at intervals in the first direction X1, the first inspection plate 101 is provided on the second inspection plate 102, the second inspection plate 102 is provided with a plurality of first grooves L1 and second grooves L2 at intervals in the first direction X1, each first groove L1 partially overlaps with the corresponding first through hole H1, and each second groove L2 overlaps with the corresponding first through hole H1; the first through hole H1, the first groove L1 and the second groove L2 are used in conjunction to detect the contour of the product to be tested; the plurality of aperture detection components 103 are provided on the second inspection plate 102 and pass through the first through hole H1, and the aperture detection components 103 are used to detect the holes to be tested of the product to be tested.

[0026] The composite inspection fixture 10 provided in some embodiments of the present application can simultaneously inspect the contour of the product to be inspected and the holes to be inspected on the product to be inspected. The integrated design can not only improve the inspection efficiency, but also save inspection time, thereby saving costs.

[0027] It can be understood that, since the aperture detection component 103 can pass through the first through hole H1 , when the product to be tested passes through the first through hole H1 , the aperture detection component 103 can simultaneously pass through the hole to be tested of the product to be tested.

[0028] In some embodiments, the number of the first through holes H1 and the positions on the first detection board 101 can be determined according to actual conditions. For example, the first detection board 101 includes two first through holes H1 arranged at intervals; for another example, the first detection board 101 includes three first through holes H1 arranged at intervals; for another example, the first through hole H1 is arranged in the middle area of ​​the first detection board 101; for another example, the first through hole H1 is arranged in the upper left corner area of ​​the first detection board 101.

[0029] In some embodiments, the number of the first grooves L1 and their positions on the second detection plate 102 can be set corresponding to the first through holes H1 to ensure that the first through holes H1 partially overlap with the first grooves L1.

[0030] In some embodiments, the size, shape and other parameters of the first through hole H1 and the first groove L1 can be set according to the size, shape and other parameters of the product to be tested, or can be set according to other requirements. It can be understood that the first through hole H1 can maintain the stability of the product to be tested to a certain extent, that is, when the product to be tested passes through the first through hole H1, the first through hole H1 can play a role in fixing the product to be tested, so as to avoid the product to be tested from being skewed and affecting the measurement results, and reduce the occurrence of false detection.

[0031] In some embodiments, the size, shape and other parameters of the first through hole H1 and the first groove L1 may be the same or different. For example, the first through hole H1 and the first groove L1 are both rectangular parallelepiped; for another example, the first through hole H1 and the first groove L1 are both cube-shaped; for another example, the first through hole H1 is a rectangular parallelepiped, and the first groove L1 is a cube-shaped.

[0032] In some embodiments, the first through hole H1 and the first groove L1 have the same size and shape, but the first through hole H1 and the first groove L1 are arranged in different positions / orientations in the first direction X1. For example, the length extension direction of the cross section of the first through hole H1 is perpendicular to the first direction X1, while the length extension direction of the cross section of the first groove L1 is parallel to the first direction X1; for another example, the length extension direction of the cross section of the first through hole H1 is parallel to the first direction X1, while the length extension direction of the cross section of the first groove L1 is perpendicular to the first direction X1.

[0033] In some embodiments, the second groove L2 can accommodate at least part of the product to be tested. The shape and number of the second grooves L2 on the second testing plate 102 can be set according to the shape and number of the first through hole H1 and the product to be tested, or can be set according to other requirements.

[0034] In some embodiments, the aperture detection component 103 can not only detect the holes of the product to be tested, but also ensure that the product to be tested is placed on the composite inspection fixture 10 to maintain a stable state, thereby preventing the product to be tested from tilting and affecting the measurement results, thereby reducing the occurrence of false detection.

[0035] In some embodiments, the first groove L1 , the second groove L2 and the aperture detection assembly 103 are spaced apart in the second direction Y1 , and the spacing distance can be determined according to actual conditions.

[0036] In some embodiments, in order to ensure that the first inspection board 101 and the second inspection board 102 can successfully detect the contour of the product to be tested, when the product to be tested is placed on the composite inspection fixture 10 , it is necessary to meet the requirement that the product to be tested abuts against at least one end of the first through hole H1 .

[0037] In some embodiments, when the product to be tested is placed on the composite gauge 10, only contour detection may be performed without side hole detection, that is, the product to be tested may not contact the aperture detection component 103. At this time, the composite gauge 10 is only used to detect whether the contour of the product to be tested is qualified.

[0038] See also Figure 2 , Figure 2 is a schematic diagram of the first detection board 101 in some embodiments of the present application. Figure 2 In the embodiment, two first through holes H1 are arranged at intervals on the first detection plate 101, and each first through hole H1 includes a first sub-through hole K1, a second sub-through hole K2, and a third sub-through hole K3. The second sub-through hole K2 and the third sub-through hole K3 are respectively arranged on two opposite sides of the first sub-through hole K1, the second sub-through hole K2 and the third sub-through hole K3 are respectively connected to the first sub-through hole K1, the first sub-through hole K1 partially overlaps with the corresponding first groove L1, and the second sub-through hole K2 overlaps with the corresponding second groove L2.

[0039] The size and shape of the second sub-through hole K2 and the third sub-through hole K3 can be set according to the size and shape of the qualified product. The first sub-through hole K1, the second sub-through hole K2 and the third sub-through hole K3 can accommodate the qualified product, and the first sub-through hole K1, the second sub-through hole K2 and the third sub-through hole K3 can be used to detect the contour of the product to be tested to determine whether the product to be tested is a qualified product.

[0040] Specifically, if the product to be tested cannot pass through the first sub-through hole K1, the second sub-through hole K2 and the third sub-through hole K3, it indicates that the product to be tested is defective and is an unqualified product; if the product to be tested can pass through the first sub-through hole K1, the second sub-through hole K2 and the third sub-through hole K3, and there is a movable space, then whether the product to be tested is qualified can be determined based on the size of the movable space. For example, if the volume of the movable space is greater than the threshold, it indicates that the product to be tested is defective and is an unqualified product. If the volume of the movable space is less than the threshold, it indicates that the outline of the product to be tested is qualified. The size of the threshold can be determined according to the actual situation, for example, the threshold is 0.2, 0.4, or 0.5.

[0041] The size of the movable space can be determined by manual measurement or by using an automated measuring instrument, and there is no limitation here.

[0042] In some embodiments, any two of the plurality of first through holes H1 are symmetrically arranged, and the symmetrically arranged first through holes H1 are used to detect the concentricity of the product to be tested. Specifically, if the product to be tested can be respectively inserted into the two symmetrically arranged first through holes H1 when the direction of the product to be tested is changed, it indicates that the concentricity of the product to be tested is qualified; otherwise, it indicates that the concentricity of the product to be tested is unqualified, the product to be tested is defective, and the product to be tested is an unqualified product.

[0043] It is worth noting that the symmetrically arranged first through holes H1 may be on the same horizontal line or not, that is, any two first through holes H1 among the plurality of first through holes H1 may be axially symmetrical, centrally symmetrical, or rotationally symmetrical.

[0044] In an application scenario, such as Figure 2 As shown, two first through holes H1 are provided on the first detection plate 101 , and the two first through holes H1 are located on the same horizontal line. At this time, the two first through holes H1 are axially symmetrical.

[0045] See also Figure 3 , Figure 3 1 is a schematic diagram of the second detection board 102 in some embodiments of the present application. The second detection board 102 is also provided with a plurality of detection slots 104, the opening of each detection slot 104 faces the first groove L1, the product to be detected passes through the first through hole H1, and passes through at least a portion of the first groove L1 and at least a portion of the second groove L2, and the product to be detected abuts against the corresponding detection slot 104, so that the contour of the product to be detected is detected through the detection slot 104.

[0046] In some embodiments, the size of the detection slot 104 can be set according to the qualified product, that is, the detection slot 104 can accommodate the qualified product, and the detection slot 104 can be used to detect the contour of the product to be tested to determine whether the product to be tested is a qualified product.

[0047] Specifically, if the product to be tested cannot be placed on the testing slot 104, it indicates that the product to be tested is defective and is an unqualified product; if the product to be tested can be placed on the testing slot 104 and there is a movable space, then whether the product to be tested is qualified can be determined based on the size of the movable space. For example, if the volume of the movable space is greater than the threshold, it indicates that the product to be tested is defective and is an unqualified product. If the volume of the movable space is less than the threshold, it indicates that the outline of the product to be tested is qualified. The size of the threshold can be determined according to actual conditions, for example, the threshold is 0.02, 0.04, or 0.05.

[0048] In some embodiments, the detection slots 104 and the first slots L1 may be arranged correspondingly, and the size, quantity, and position of the detection slots 104 may be determined according to the first slots L1. For example, the second detection plate 102 includes two first slots L1, each of which corresponds to one detection slot 104.

[0049] In some embodiments, the number of the detection slots 104 is less than the number of the first grooves L1 . For example, the second detection plate 102 includes three first grooves L1 and two detection slots 104 , wherein the two first grooves L1 correspond to one detection slot 104 , respectively.

[0050] In some embodiments, the size of the detection slot 104 needs to be smaller than or equal to the size of the first groove L1 , so that the product to be tested can be placed on and abut against the detection slot 104 , and then the detection slot 104 is used to detect the contour of the product to be tested.

[0051] In some embodiments, the inspection slot 104 is used to inspect at least a portion of the product to be inspected. For example, the inspection slot 104 is used to inspect the wing profile of the product to be inspected.

[0052] In some embodiments, the sizes and shapes of the multiple detection slots 104 may be the same or different. For example, the second detection plate 102 is provided with two detection slots 104, one of which has an arc-shaped cross section and the other has a circular cross section; for another example, the second detection plate 102 is provided with two detection slots 104, and the cross sections of the two detection slots 104 are both circular.

[0053] In some embodiments, any two of the plurality of detection slots 104 are symmetrically arranged, and the symmetrically arranged detection slots 104 are used to detect the concentricity of the product to be tested. Specifically, if the product to be tested can be placed in the two symmetrically arranged detection slots 104 respectively when the direction of the product to be tested is changed, it indicates that the concentricity of the product to be tested is qualified; otherwise, it indicates that the concentricity of the product to be tested is unqualified, the product to be tested is defective, and the product to be tested is an unqualified product.

[0054] It is worth noting that the symmetrically arranged detection slots 104 may be on the same horizontal line or not, that is, any two detection slots 104 among the plurality of detection slots 104 may be axially symmetrical, centrally symmetrical, or rotationally symmetrical.

[0055] In an application scenario, such as Figure 3 As shown, two detection slots 104 are disposed on the second detection plate 102 . The two detection slots 104 are located on the same horizontal line. At this time, the two detection slots 104 are axially symmetrical.

[0056] In some embodiments of the present application, a symmetrical first through hole H1 and a symmetrical detection groove 104 are provided on the second detection plate 102, so as to detect the contour and concentricity of the product to be detected respectively, thereby reducing the occurrence of false detection and improving the detection efficiency.

[0057] In some embodiments, the second detection plate 102 is further provided with a plurality of third grooves L3 (not shown), the plurality of third grooves L3 are arranged at intervals, the first groove L1, the second groove L2 and the third groove L3 are arranged at intervals in the second direction Y1, and the interval distance can be determined according to actual conditions. One end of the aperture detection component 103 is arranged in the third groove L3, and the other end of the aperture detection component 103 passes through the first through hole H1. It can be understood that the third groove L3 can fix the aperture detection component 103 to maintain the stability of the aperture detection component 103, so that the aperture detection component 103 can detect the aperture to be tested of the product to be tested.

[0058] In some embodiments, the size, shape, etc. of the third groove L3 can be set accordingly according to the aperture detection component 103.

[0059] In some embodiments, see Figure 4 Each aperture detection component 103 includes a first fixing member 1031 and an aperture detection member 1032. The first fixing member 1031 is arranged in the third groove L3. One end of the aperture detection member 1032 abuts against the first fixing member 1031, and the other end of the aperture detection member 1032 passes through the first through hole H1. The aperture detection member 1032 is used to detect the size of the hole to be measured on the product to be measured, wherein the size at least includes parameters such as aperture and length.

[0060] In some embodiments, the first through hole H1 includes a first sub-through hole K1, a second sub-through hole K2 and a third sub-through hole K3, and the first sub-through hole K1 partially overlaps with the corresponding first groove L1, and the second sub-through hole K2 overlaps with the corresponding second groove L2, and the other end of the aperture detection member 1032 passes through the second sub-through hole K2 in the first through hole H1.

[0061] In some embodiments, the aperture detection member 1032 can pass through the hole to be tested of the qualified product, and the aperture detection member 1032 can be used to detect the hole to be tested of the product to determine whether the product to be tested is qualified.

[0062] Specifically, if the aperture detection member 1032 cannot pass through the hole to be tested of the product to be tested, it indicates that the product to be tested is defective and is an unqualified product; if the aperture detection member 1032 can pass through the hole to be tested of the product to be tested, and there is a movable space between the aperture detection member 1032 and the hole to be tested, then whether the product to be tested is qualified can be determined based on the size of the movable space. For example, if the volume of the movable space is greater than the threshold, it indicates that the product to be tested is defective and is an unqualified product. If the volume of the movable space is less than the threshold, it indicates that the contour of the product to be tested is qualified. The size of the threshold can be determined according to the actual situation, for example, the threshold is 0.02, 0.04, or 0.05.

[0063] In some embodiments, the aperture detection member 1032 includes a pin gauge, which can be used to detect the aperture, length, etc. of the product to be tested.

[0064] In some embodiments, the first fixing member 1031 is provided with a fourth groove L4 (not shown), and one end of the aperture detection member 1032 is disposed in the fourth groove L4. The size, shape and other information of the fourth groove L4 can be set accordingly according to the aperture detection member 1032.

[0065] The composite inspection fixture 10 provided in some embodiments of the present application can not only use the first through hole H1 provided on the first inspection plate 101 and the first groove L1, the second groove L2, and the inspection groove 104 provided on the second inspection plate 102 to detect the contour and concentricity of the product to be tested, but also use the aperture detection component 103 provided on the second inspection plate 102 to detect the holes to be tested of the product to be tested. The integrated design of the composite inspection fixture 10 can simultaneously perform contour detection, concentricity detection and hole detection, thereby improving detection efficiency and saving detection time.

[0066] See also Figure 5 , Figure 5 Schematic diagram of a composite gauge 10 provided in some embodiments of the present application. Figure 5 In the composite inspection tool 10, a plurality of second through holes H2 are provided on the first inspection plate 101, and a plurality of fifth grooves L5 (not shown) are further provided on the second inspection plate 102, and the fifth grooves L5 are provided corresponding to the second through holes H2; the composite inspection tool 10 further includes a plurality of fixing components 105, at least part of the fixing components 105 are provided in the fifth grooves L5, and at least part of the fixing components 105 pass through the second through holes H2 to fix the first inspection plate 101 on the second inspection plate 102.

[0067] In some embodiments, the size and shape of the fifth groove L5 can be set according to the fixing component 105. For example, the fixing component 105 is a cylinder, and the fifth groove L5 is a hollow cylinder; for another example, the fixing component 105 is a cuboid, and the fifth groove L5 is a hollow cuboid.

[0068] In some embodiments, see Figure 6 Each fixing assembly 105 includes a second fixing member 1051 and a third fixing member 1052. The second fixing member 1051 is disposed in the fifth groove L5. One end of the third fixing member 1052 abuts against the second fixing member 1051. The other end of the third fixing member 1052 passes through the second through hole H2.

[0069] In some embodiments, the size and shape of the fifth groove L5 can be set according to the second fixing member 1051. For example, the second fixing member 1051 is a cylinder, and the fifth groove L5 is a hollow cylinder; for another example, the second fixing member 1051 is a cuboid, and the fifth groove L5 is a hollow cuboid.

[0070] The composite inspection fixture 10 in some embodiments of the present application includes a plurality of fixing components 105, which can maintain the stability and fixation between the first inspection plate 101 and the second inspection plate 102, and the first inspection plate 101 and the second inspection plate 102 are detachably connected, so that the first inspection plate 101 and / or the second inspection plate 102 can be replaced purposefully, thereby expanding the use scenarios of the first inspection plate 101 and the second inspection plate 102, thereby saving costs.

[0071] In summary, the composite inspection tool 10 provided in some embodiments of the present application integrates contour inspection, concentricity inspection and hole inspection, which can improve inspection efficiency and save inspection time.

[0072] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A composite test fixture, applied to a product to be tested, wherein the product to be tested includes at least one hole to be tested, characterized in that: The composite inspection tool comprises: A first detection plate having a plurality of first through holes spaced apart in a first direction; a second detection plate, wherein the first detection plate is arranged on the second detection plate, and the second detection plate is provided with a plurality of first grooves and second grooves at intervals in a first direction, each of the first grooves partially overlaps with the corresponding first through hole, and each of the second grooves overlaps with the corresponding first through hole; the first through hole, the first groove and the second groove are used together to detect the contour of the product to be tested; A plurality of aperture detection components are arranged on the second detection plate and pass through the first through hole, and the aperture detection components are used to detect the holes to be detected of the product to be detected.

2. The composite gauge according to claim 1, characterized in that: The second detection plate is also provided with a plurality of detection slots, and the opening of each detection slot faces the first groove; The product to be tested passes through the first through hole and at least part of the first groove and at least part of the second groove, and the product to be tested abuts against the corresponding detection groove to detect the contour of the product to be tested through the detection groove.

3. The composite gauge according to claim 2, characterized in that: Any two of the plurality of detection slots are symmetrically arranged; The symmetrically arranged detection grooves are used to detect the concentricity of the product to be tested.

4. The composite gauge according to claim 1, characterized in that: The second detection plate is further provided with a plurality of third grooves, the plurality of third grooves are arranged at intervals, the first groove, the second groove and the third groove are arranged at intervals in a second direction, and the second direction is perpendicular to the first direction; Each of the aperture detection components includes a first fixing member and an aperture detection member, wherein the first fixing member is arranged in the third groove; one end of the aperture detection member abuts against the first fixing member, and the other end of the aperture detection member passes through the first through hole, and the aperture detection member is used to detect the size of the hole to be measured.

5. The composite gauge according to claim 4, characterized in that: The first fixing member is provided with a fourth groove, and one end of the aperture detection member is arranged in the fourth groove.

6. The composite gauge according to claim 4 or 5, characterized in that: The aperture detection member includes a pin gauge.

7. The composite gauge according to claim 1, characterized in that: Each of the first through holes includes a first sub-through hole, a second sub-through hole and a third sub-through hole; The second sub-through hole and the third sub-through hole are respectively arranged on two opposite sides of the first sub-through hole, the second sub-through hole and the third sub-through hole are respectively interconnected with the first sub-through hole, the first sub-through hole partially overlaps with the corresponding first groove, and the second sub-through hole overlaps with the corresponding second groove.

8. The composite gauge according to claim 1, characterized in that: Any two of the plurality of first through holes are symmetrically arranged; The symmetrically arranged first through holes are used to detect the concentricity of the product to be tested.

9. The composite gauge according to claim 1, characterized in that: The first detection plate is provided with a plurality of second through holes, and the second detection plate is further provided with a plurality of fifth grooves, and the fifth grooves are provided correspondingly to the second through holes; The composite gauge further includes a plurality of fixing components, at least part of which is disposed in the fifth groove, and at least part of which passes through the second through hole, so as to fix the first detection plate on the second detection plate.

10. The composite gauge according to claim 9, characterized in that: Each of the fixing components includes a second fixing member and a third fixing member, the second fixing member is arranged in the fifth groove, one end of the third fixing member abuts against the second fixing member, and the other end of the third fixing member passes through the second through hole.

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