Detection tool for part holes

Abstract

The utility model discloses a detection tool for part holes, and belongs to the technical field of part detection. The detection tool comprises a supporting frame, a marking pin assembly and a detection pin assembly, the supporting frame is provided with a through hole, the marking pin assembly comprises a marking pin body and a marking pin head, part of the marking pin body is located in the through hole and is in sliding connection with the through hole, and the marking pin head is located at one end of the marking pin body and is connected with the marking pin body. The detection pin assembly comprises a detection pin body and a detection pin head, part of the detection pin body is located in the marking pin body and is in sliding connection with the marking pin body, the detection pin head is located at the first end of the detection pin body and is connected with the detection pin body, and the detection pin head and the marking pin head are located at the same end of the through hole. According to the detection tool, qualitative detection of the depth and the diameter of the to-be-detected hole and quantitative detection preparation of the position degree can be realized, multiple detection devices do not need to be frequently replaced, and the detection efficiency of the to-be-detected hole is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of parts detection, and in particular to a detection tool for parts holes. Background Art

[0002] With the development of the manufacturing industry, the requirements for the refinement of the manufacturing industry are getting higher and higher. Punching and drilling are an important part of manufacturing. Due to equipment accuracy, human factors, environmental factors and other reasons, hole processing defects are inevitable, so the quality of the holes on mechanical components needs to be strictly inspected.

[0003] In the related art, a split-type inspection tool assembly is used for hole inspection. One inspection tool is used to perform a qualitative inspection on the depth and diameter of the hole, and another inspection tool is used to mark the end face of the hole to determine the axial position of the hole, so as to facilitate the subsequent quantitative inspection of the deviation value between the center of the component installed in the hole and the axis of the hole.

[0004] The above-mentioned detection tool assembly for part holes requires frequent replacement of detection tools, which is cumbersome to operate and has low detection efficiency. Utility Model Content

[0005] The embodiment of the present disclosure provides a tool for detecting holes in parts, which can solve the above-mentioned technical problems existing in the related art. The technical solution is as follows:

[0006] The detection tooling comprises a support frame, a marking pin assembly and a detection pin assembly;

[0007] The support frame has a through hole;

[0008] The marking pin assembly includes a marking pin body and a marking pin head, wherein a portion of the marking pin body is located in the through hole and is slidably connected to the through hole, and the marking pin head is located at one end of the marking pin body and is connected to the marking pin body;

[0009] The detection pin assembly includes a detection pin body and a detection pin head. Part of the detection pin body is located in the marking pin body and is slidably connected to the marking pin body. The detection pin head is located at the first end of the detection pin body and is connected to the detection pin body. The detection pin head and the marking pin head are located at the same end of the through hole.

[0010] In some possible implementations, the detection tool further includes a bushing, wherein the bushing is located between the through hole and the marking pin body and is connected to the through hole, and the bushing is slidably connected to the marking pin body.

[0011] In some possible implementations, the support frame further has a screw hole, where the screw hole is opposite to the bushing and is used to accommodate a screw for fixing the bushing.

[0012] In some possible implementations, the marking pin body has a first step structure, and the first step structure is opposite to one end of the bushing.

[0013] In some possible implementations, the scribing pin body has a second step structure;

[0014] The first end of the detection pin body has a limit bearing, and the limit bearing is opposite to the second step structure.

[0015] In some possible implementations, the detection pin assembly further includes a handle, wherein the handle is located at the second end of the detection pin body and connected to the detection pin body.

[0016] In some possible implementations, the handle has a threaded hole, the second end of the detection pin body has a threaded area, and the threaded hole is matched with the threaded area.

[0017] In some possible implementations, the detection pin assembly further includes a washer and a nut, and in a direction from the first end to the second end, the threaded area is connected to the washer, the nut, and the threaded hole in sequence.

[0018] In some possible implementations, a distance L1 from the gasket to the marking pin body is greater than or equal to a length L2 of the detection pin head.

[0019] In some possible implementations, the support frame further has a screw hole, and the screw hole is used to fix the support frame by means of a bolt.

[0020] The beneficial effects of the technical solution provided by the present disclosure include at least:

[0021] In the present disclosure, the inspector drags the inspection pin assembly to slide relative to the marking pin assembly, and inserts the inspection pin head into the hole to be inspected to complete the qualitative inspection of the depth and diameter of the hole to be inspected. The inspector drags the marking pin assembly to slide relative to the through hole, and marks the marking pin head on the end face of the hole to be inspected to determine the axial position of the hole to be inspected, which is convenient for the subsequent quantitative inspection of the deviation value between the center of the component installed in the hole to be inspected and the axis of the hole to be inspected, thereby realizing the qualitative inspection work of the depth and diameter of the hole to be inspected and the preparation work of the quantitative inspection of the position of the hole to be inspected by one inspection tool, without the need to frequently replace multiple inspection devices, thereby improving the inspection efficiency of the hole to be inspected.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 is a cross-sectional schematic diagram of a detection tool provided by an embodiment of the present disclosure;

[0025] Figure 2 is a structural schematic diagram of a detection tool provided by an embodiment of the present disclosure;

[0026] Figure 3 It is a schematic diagram of the assembly of a marking pin assembly, a detection pin assembly, and a bushing provided in an embodiment of the present disclosure;

[0027] Figure 4 yes Figure 1 A partial schematic diagram of .

[0028] Reference numerals:

[0029] 1. support frame, 11. through hole, 12. screw hole, 13. screw hole;

[0030] 2. Scribing pin assembly, 21. Scribing pin body, 211. First step structure, 212. Second step structure, 22. Scribing pin head;

[0031] 3. Detection pin assembly, 31. Detection pin body, 31a. Limit bearing, 32. Detection pin head, 33. Handle, 34. Washer, 35. Nut;

[0032] 4. Bushing.

[0033] The above drawings show clear embodiments of the present disclosure, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0035] With the development of the manufacturing industry, the requirements for the refinement of the manufacturing industry are getting higher and higher. Punching and drilling are an important part of manufacturing. Due to equipment accuracy, human factors, environmental factors and other reasons, hole processing defects are inevitable, so the quality of the holes on mechanical components needs to be strictly inspected.

[0036] In the related art, the tool assembly for the quantitative detection of the hole is generally split-type detection. First, a detection tool is used to perform a qualitative detection of the depth and diameter of the hole. For example, the detection tool has a cylindrical measurement area with pre-set length and diameter parameters. The cylindrical measurement area is gradually inserted into the hole to be detected. If the cylindrical measurement area can be smoothly and just inserted into the hole to be detected, it proves that the depth and diameter parameters of the hole to be detected meet the pre-set qualified conditions; if the cylindrical measurement area cannot be smoothly and just inserted into the hole to be detected, it proves that the depth and diameter parameters of the hole to be detected do not meet the pre-set qualified conditions. Qualitative detection does not focus on the specific values ​​of each parameter, but focuses on whether the component to be detected meets the pre-set qualified conditions.

[0037] Then, another inspection tool is used to mark the end face of the hole to determine the axis position of the hole to be inspected. After the relevant components are installed inside the hole to be inspected, auxiliary measuring tools such as vernier calipers are used to measure the error value between the center of the relevant component and the axis of the hole to be inspected, that is, quantitative inspection of the position of the relevant component relative to the hole to be inspected. Quantitative inspection is a measurement work that focuses on the specific values ​​of each parameter.

[0038] The related technology requires replacement of detection tools for qualitative detection of the depth and diameter of the detection hole and quantitative detection of the position, which makes the overall operation cumbersome and the detection efficiency low.

[0039] The present disclosure provides a tool for detecting holes in parts. Figure 1 As shown, the detection tooling may include a support frame 1 , a marking pin assembly 2 and a detection pin assembly 3 .

[0040] The support frame 1 has a through hole 11, which is used to accommodate and support the marking pin assembly 2 and the detection pin assembly 3.

[0041] The marking pin assembly 2 may include a marking pin body 21 and a marking pin head 22 . Part of the marking pin body 21 is located in the through hole 11 and is slidably connected to the through hole 11 . The marking pin head 22 is located at one end of the marking pin body 21 and is connected to the marking pin body 21 .

[0042] The marking pin body 21 is slidably connected to the through hole 11, and the inspector can push the marking pin body 21 to make the marking pin head 22 approach or move away from the end face of the hole to be inspected; the marking pin body 21 is coaxial with the through hole 11 and is rotatably connected. When the marking pin head 22 abuts against the end face of the hole to be inspected, the inspector can rotate the marking pin body 21, so that the marking pin body 21 drives the marking pin head 22 to rotate. The marking pin head 22 has a large hardness, so the marking pin head 22 can draw an arc or a complete circle on the end face of the hole to be inspected. Subsequently, the inspector can determine the axis position of the hole to be inspected based on the arc or complete circle drawn by the marking pin head 22, and subsequently can use auxiliary measuring tools such as vernier calipers to measure the deviation value between the center of the component installed in the hole to be inspected and the axis of the hole to be inspected (i.e., quantitative detection of the position of the relevant component relative to the hole to be inspected).

[0043] The detection pin assembly 3 may include a detection pin body 31 and a detection pin head 32. Part of the detection pin body 31 is located in the marking pin body 21 and is slidably connected to the marking pin body 21. The detection pin head 32 is located at the first end of the detection pin body 31 and is connected to the detection pin body 31. The detection pin head 32 and the marking pin head 22 are located at the same end of the through hole 11.

[0044] The detection pin body 31 is slidably connected to the marking pin body 21, and the inspector can push the detection pin body 31 so that the detection pin head 32 is inserted into the hole to be inspected or pulled out from the hole to be inspected; the detection pin body 31 can also be coaxially and rotatably connected to the marking pin body 21. During the process of inserting the detection pin head 32 into the hole to be inspected or pulling it out from the hole to be inspected, the inspector can appropriately rotate the detection pin body 31 to increase the working speed of the detection pin assembly 3.

[0045] A marking line indicating a preset depth may be provided on the detection pin head 32. If, when the end of the detection pin head 32 is in contact with the bottom of the hole to be detected, the bottom of the hole to be detected coincides with the marking line on the detection pin head 32, it indicates that the depth parameter of the hole to be detected meets the standard; if, when the end of the detection pin head 32 is in contact with the bottom of the hole to be detected, the bottom of the hole to be detected coincides with the marking line on the detection pin head 32, it indicates that the depth of the hole to be detected is greater than or less than the preset depth, that is, the depth parameter of the hole to be detected does not meet the standard.

[0046] Reference Figure 1 As shown, in some embodiments, the detection tooling may further include a bushing 4, which is located between the through hole 11 and the marking pin body 21 and connected to the through hole 11, and the bushing 4 is slidably connected to the marking pin body 21.

[0047] The hardness of the bushing 4 is greater than that of the support frame 1. On the one hand, the provision of the bushing 4 can reduce the direct contact area between the marking pin body 21 and the through hole 11, thereby reducing the wear of the inner wall of the through hole 11, extending the service life of the support frame 1, and reducing the frequency of repairing and replacing the support frame 1. Usually, the support frame 1 is large in size and uses a large amount of material. Reducing the frequency of replacing the support frame 1 can reduce the cost of using the detection tooling. On the other hand, the bushing 4 has a large hardness and good wear resistance, which can ensure the coaxiality of the through hole 11 and the marking pin body 21, thereby improving the detection accuracy and stability of the detection tooling.

[0048] Reference Figure 2 As shown, in some embodiments, the support frame 1 further has a screw hole 12, which is opposite to the bushing 4 and is used to accommodate a screw for fixing the bushing 4. The screw can pass through the screw hole 12 and abut against the side wall of the bushing 4, thereby ensuring that there is no relative sliding between the bushing 4 and the through hole 11. Compared with other fixing solutions, the solution of fixing with screws is also convenient for disassembly and replacement of the bushing 4.

[0049] Reference Figure 4 As shown, in some embodiments, the marking pin body 21 has a first step structure 211, and the first step structure 211 is opposite to one end of the bushing 4. Since the bushing 4 and the through hole 11 are relatively fixed, the first step structure 211 cooperates with the bushing 4 to limit the marking pin assembly 2, that is, when the inspector drags the marking pin body 21 to drive the marking pin head 22 away from the end face of the hole to be inspected, the distance between the first step structure 211 and one end of the bushing 4 gradually decreases until the first step structure 211 abuts against the end of the bushing 4. At this time, the inspector cannot continue to drag the marking pin body 21 to move in this direction, indicating that the marking pin assembly 2 is at the farthest distance from the hole to be inspected.

[0050] In this way, it can prevent the inspector from dragging the marking pin assembly 2 for too long a distance, causing it to fall off the through hole 11, and the inspection tooling needs to be reassembled later, which is not conducive to the continuous use of the inspection tooling. It can also ensure that the marking pin assembly 2 can return to the same starting position after each use.

[0051] Reference Figure 4As shown, in some embodiments, the marking pin body 21 has a second step structure 212, and the first end of the detection pin body 31 has a limit bearing 31a, and the limit bearing 31a is opposite to the second step structure 212. When the first step structure 211 of the marking pin body 21 abuts against the end of the bushing 4 (that is, the marking pin assembly 2 returns to the starting position), the detection personnel drags the detection pin body 31 to drive the detection pin head 32 to gradually pull out from the hole to be detected. During this process, the distance between the limit bearing 31a and the second step structure 212 gradually decreases until the limit bearing 31a abuts against the second step structure 212. At this time, the detection personnel cannot continue to drag the detection pin body 31 to move in this direction, indicating that the detection pin assembly 3 is already at the farthest distance from the hole to be detected.

[0052] In this way, it can prevent the inspection personnel from dragging the inspection pin assembly 3 for too long, causing it to fall off the marking pin assembly 2, and the inspection tooling needs to be reassembled later, which is not conducive to the continuous use of the inspection tooling. It can also ensure that the inspection pin assembly 3 can return to the same starting position after each use.

[0053] Reference Figure 3 As shown, in some embodiments, the detection pin assembly 3 may further include a handle 33, which is located at the second end of the detection pin body 31 and connected to the detection pin body 31. The handle 33 may be elliptical, circular or other shapes, which may be set after comprehensive consideration of factors such as usage scenarios, hand structure and ergonomic principles.

[0054] In some embodiments, the handle 33 has a threaded hole, and the second end of the detection pin body 31 has a threaded area, and the threaded hole is adapted to the threaded area. The arrangement of the threaded hole and the threaded area allows the detection personnel to complete the connection or disassembly of the handle 33 and the detection pin body 31 without the aid of other tools, which is conducive to simplifying the assembly work of the detection tooling.

[0055] However, the embodiments of the present disclosure are not limited to this. The handle 33 and the detection pin body 31 may also adopt a detachable connection method such as bolt connection, snap connection, etc., or a non-detachable connection method such as gluing, welding, etc., and the specific setting can be matched according to factors such as the use scenario of the detection tooling, the connection strength of different detection tooling on the handle 33 and the detection pin body 31, etc.

[0056] Reference Figure 3 As shown, in some embodiments, the detection pin assembly 3 may further include a gasket 34 and a nut 35, and in the direction from the first end to the second end, the threaded area is sequentially connected to the gasket 34, the nut 35, and the threaded hole.

[0057] The nut 35 rotates in the opposite direction to the threaded hole. Based on the anti-loosening principle of the top nut, the nut 35 can increase the friction between the handle 33 and the detection pin body 31 to prevent the handle 33 from loosening or falling off when subjected to external force or vibration.

[0058] The gasket 34 can form a certain damping effect, reduce the possibility of the nut 35 loosening, and prevent the end of the marking pin body 21 from being directly squeezed or collided with the nut 35 or the handle 33, thereby increasing the service life of the nut 35 or the handle 33 and preventing the inspector's hands from being injured due to squeezing at the handle 33.

[0059] Reference Figure 1 As shown, in some embodiments, the distance L1 from the gasket 35 to the marking pin body 21 is greater than or equal to the length L2 of the detection pin head 32 .

[0060] If the distance L1 from the gasket 35 to the marking pin body 21 is smaller than the length L2 of the detection pin head 32, then during the process of inserting the detection pin head 32 into the hole to be inspected, before the detection pin head 32 fits with the bottom of the hole to be inspected, the gasket 35 abuts against the end of the marking pin body 21, thereby causing the detection pin head 32 to be unable to be smoothly inserted into the hole to be inspected and to achieve qualitative inspection of the hole to be inspected.

[0061] At the same time, when the distance L1 from the gasket 35 to the marking pin body 21 is greater than the length L2 of the detection pin head 32, the length of the detection pin body 31 will be increased. On the one hand, the material consumption and production cost of the detection pin body 31 will be increased. On the other hand, the overall volume and mass of the detection tooling will be increased, which is not conducive to the movement and placement of the detection tooling.

[0062] Reference Figure 2 As shown, in some embodiments, the support frame 1 further has a screw hole 13, and the screw hole 13 is used to fix the support frame 1 by bolts.

[0063] The present disclosure does not specifically limit the number of screw holes 13, which can be set according to the connection strength requirements of the support frame 1. The present disclosure does not specifically limit the distribution positions of the multiple screw holes 13, which can be set according to the structure, size and other parameters of the components supporting the support frame 1.

[0064] Below, an exemplary description is given of the overall working process of the detection tooling.

[0065] Before the detection tooling is used, the detection tooling is fixed by matching the bolts with the screw holes 13 on the support frame 1. The marking pin assembly 2 and the detection pin assembly 3 are both located at the starting position, which can be the position where the marking pin assembly 2 and the detection pin assembly 3 are farthest from the hole to be detected, that is, the first step structure 211 of the marking pin body 21 abuts against the bushing 4, and the second step structure 212 of the marking pin body 21 abuts against the limit bearing 31a at the first end of the detection pin body 31.

[0066] The component with the hole to be inspected is placed on a movable and rotatable base and connected to the base. The inspector adjusts the posture of the component until the hole to be inspected is aligned with the inspection pin head 32 .

[0067] First, the inspector holds the handle 33 and pushes the inspection pin assembly 3 in the direction of the hole to be inspected, so that the inspection pin head 32 is gradually inserted into the hole to be inspected. If the inspection pin head 32 can be inserted smoothly and the depth of the insertion into the hole to be inspected is the preset depth, the subsequent operation is continued; if the inspection pin head 32 cannot be inserted smoothly or the depth of the insertion into the hole to be inspected is different from the preset depth, the subsequent operation is stopped, and the component corresponding to the hole to be inspected is marked as an unqualified product.

[0068] Secondly, the inspector pushes the marking pin body 21 so that the marking pin head 22 gradually approaches the end face of the hole to be inspected until the marking pin head 22 abuts against the end face of the hole to be inspected, and then rotates the marking pin body 21, which drives the marking pin head 22 to rotate, and the marking pin head 22 draws an arc or a complete circle on the end face of the hole to be inspected.

[0069] Then, the inspector pushes the marking pin assembly 2 and the detection pin assembly 3 together away from the hole to be inspected until the marking pin assembly 2 and the detection pin assembly 3 return to the starting position.

[0070] Then, install the relevant components inside the hole to be tested, for example, weld the nut inside the hole to be tested. Since there is a certain installation error in the assembly process of the relevant far and near, after the assembly is completed, use auxiliary measuring tools such as vernier calipers to measure the error value between the center of the relevant component and the axis of the hole to be tested, that is, quantitative detection of the position of the relevant component relative to the hole to be tested. If the error value is less than the preset error threshold, the test result of the assembly work of the relevant component is qualified; if the error value is greater than or equal to the preset error threshold, the test result of the assembly work of the relevant component is unqualified, and the component corresponding to the hole to be tested is marked as an unqualified product.

[0071] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0072] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0073] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0074] It can be further understood that the orientation or position relationship indicated by terms such as "center", "longitudinal", "lateral", "front", "rear", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present embodiment 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.

[0075] It is further understood that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral molding; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection without other components between the two, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this disclosure can be understood according to specific circumstances.

[0076] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0077] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the scheme disclosed herein. The present disclosure is intended to cover any variation, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the scope of rights.

[0078] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A tool for detecting holes in parts, characterized in that: The detection tooling comprises a support frame (1), a marking pin assembly (2) and a detection pin assembly (3); The support frame (1) has a through hole (11); The marking pin assembly (2) comprises a marking pin body (21) and a marking pin head (22), wherein a portion of the marking pin body (21) is located in the through hole (11) and is slidably connected to the through hole (11), and the marking pin head (22) is located at one end of the marking pin body (21) and is connected to the marking pin body (21); The detection pin assembly (3) comprises a detection pin body (31) and a detection pin head (32), wherein a portion of the detection pin body (31) is located inside the marking pin body (21) and is slidably connected to the marking pin body (21), and the detection pin head (32) is located at a first end of the detection pin body (31) and is connected to the detection pin body (31), and the detection pin head (32) and the marking pin head (22) are located at the same end of the through hole (11).

2. The detection tooling according to claim 1, characterized in that: The detection tool also includes a bushing (4), which is located between the through hole (11) and the marking pin body (21) and is connected to the through hole (11). The bushing (4) is slidably connected to the marking pin body (21).

3. The detection tooling according to claim 2, characterized in that: The support frame (1) also has a screw hole (12), the screw hole (12) is opposite to the bushing (4), and the screw hole (12) is used to accommodate a screw for fixing the bushing (4).

4. The detection tooling according to claim 2, characterized in that: The marking pin body (21) has a first step structure (211), and the first step structure (211) is opposite to one end of the bushing (4).

5. The detection tooling according to claim 1, characterized in that: The marking pin body (21) has a second step structure (212); The first end of the detection pin body (31) has a limit bearing (31a), and the limit bearing (31a) is opposite to the second step structure (212).

6. The detection tooling according to claim 1, characterized in that: The detection pin assembly (3) further comprises a handle (33), wherein the handle (33) is located at the second end of the detection pin body (31) and is connected to the detection pin body (31).

7. The detection tooling according to claim 6, characterized in that: The handle (33) has a threaded hole, the second end of the detection pin body (31) has a threaded area, and the threaded hole is adapted to the threaded area.

8. The detection tooling according to claim 7, characterized in that: The detection pin assembly (3) further comprises a gasket (34) and a nut (35), and in the direction from the first end to the second end, the threaded area is sequentially connected to the gasket (34), the nut (35), and the threaded hole.

9. The detection tooling according to claim 8, characterized in that: The distance L1 from the gasket (34) to the marking pin body (21) is greater than or equal to the length L2 of the detection pin head (32).

10. The detection tooling according to claim 1, characterized in that: The support frame (1) also has a screw hole (13), and the screw hole (13) is used to fix the support frame (1) by means of a bolt.

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