Testing fixtures and testing methods

Abstract

The present invention discloses a detection fixture and a detection method. First, a support plate is operated to rotate in a direction of a wheel hub close to a torsion beam so that a claw assembly is inserted into the wheel hub hole and abuts against the hole wall of the wheel hub hole, and then one end of the detection fixture is fixed to the torsion beam. Then, a dividing plate is operated to rotate in a direction of a sleeve close to the torsion beam so that a first locating pin can be inserted into the center hole of the bushing and a second locating pin can be inserted into the locating hole of the bushing to ensure that the deflection direction of the rotating plate is consistent with the deflection direction of the bushing. At the same time, the dividing plate and the sleeve are in the same plane. At this time, the scale on the dividing plate is a reference scale. By obtaining the scale difference between the rotating plate and the dividing plate, the angle difference between the bushing and the sleeve can be obtained. The measurement and operation process is simple and convenient. The angle difference between the bushing and the sleeve can be obtained without complex calculations, thereby improving the detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle manufacturing inspection, and in particular to a detection jig and a detection method. Background Art

[0002] A torsion beam bushing is a structure installed within a vehicle's torsion beam. It mitigates vibration and impact from the road to ensure the beam's stability. After the bushing is pressed into the torsion beam's sleeve, a relative angle forms between the bushing and the beam's sleeve. This angle must be measured to ensure it is within the designed range. If it exceeds this range, the bushing is susceptible to wear and tear during use, posing a safety hazard. If it is within this range, the bushing and torsion beam's sleeve are properly installed as designed.

[0003] The existing method of measuring relative angles is to place the press-fitted bushing and torsion beam on a detection device, measure the angles of the bushing and sleeve in turn, and then calculate the angular deviation between the bushing and sleeve. However, the process of measuring angles using this method is relatively complicated.

[0004] Therefore, it is necessary to provide a new detection fixture and detection method to solve the above technical problems. Summary of the Invention

[0005] The main purpose of the present invention is to provide a detection fixture and a detection method, which aims to solve the problem that the existing detection fixture has a complicated operation process when measuring the deviation angle of the bushing and the sleeve of the torsion beam.

[0006] To achieve the above-mentioned objectives, the detection fixture proposed in the present invention includes a connecting rod, a positioning structure and a measuring structure, the positioning structure includes a support plate and a claw assembly connected to each other, the support plate is rotatably connected to one end of the connecting rod; the dividing plate and the measuring assembly are rotatably connected to each other in the measuring structure, and the dividing plate is rotatably connected to the end of the connecting rod away from the support plate, the measuring assembly includes a rotating disk, a first positioning pin and a second positioning pin, the rotating disk is rotatably connected to the dividing disk, and the rotating disk and the dividing disk are both provided with scales, the first positioning pin and the second positioning pin are both provided on the rotating disk; the claw assembly is used to be inserted into the hub hole of the torsion beam and abut against the hole wall of the hub hole, the first positioning pin is used to be inserted into the center hole, and the second positioning pin is used to be inserted into the positioning hole to obtain the scale difference between the rotating disk and the dividing disk, and the angle difference is the scale difference.

[0007] Optionally, the support plate includes a supporting portion and two mounting portions, both of the mounting portions are connected to the supporting portion, and the two mounting portions are symmetrically distributed about the supporting portion, the number of the claw assemblies is two, the two claw assemblies are correspondingly connected to the two mounting portions, and both of the claw assemblies are used to be inserted into the hub hole of the torsion beam and abut against the hole wall of the hub hole.

[0008] Optionally, each of the claw assemblies includes multiple claws, one of which is located at an end of the mounting portion away from the support portion, and the remaining claws are located on opposite sides of the mounting portion, and multiple claws are all in contact with the hole wall of the wheel hub hole.

[0009] Optionally, the plurality of claws are all made of die steel.

[0010] Optionally, the scale on the rotating disk is a first scale, which is arranged on the outer circumference of the rotating disk, and the scale on the dividing disk is a second scale, which is arranged on the outer circumference of the dividing disk.

[0011] Optionally, the number of the second positioning pins is at least two, and the plurality of second positioning pins are evenly distributed on the rotating disk. The number of the positioning holes is at least two, and the number of the second positioning pins is consistent with the number of the positioning holes and is arranged in a one-to-one correspondence.

[0012] Optionally, the positioning structure further includes a first fastener, the support plate is provided with a first mounting hole, the first fastener passes through the first mounting hole and is connected to one end of the connecting rod; and / or, the measuring structure further includes a second fastener, the dividing plate is provided with a second mounting hole, the second fastener passes through the second mounting hole and is connected to the other end of the connecting rod.

[0013] Optionally, a first gripping handle is provided on a side of the support plate facing away from the claw assembly, and a second gripping handle is provided on a side of the indexing plate facing away from the rotating plate.

[0014] Optionally, the first gripping handle and the second gripping handle are both cube handles, and four corners of the first gripping handle and the second gripping handle are both provided with chamfers.

[0015] In addition, the present invention also provides a detection method, which uses the detection fixture as described above, and the positioning method includes:

[0016] Inserting the claw assembly into the wheel hub hole and abutting against the hole wall of the wheel hub hole;

[0017] Rotating the rotating disk to insert the first positioning pin into the center hole of the bushing, and to insert the second positioning pin into the positioning hole of the bushing;

[0018] The scale difference between the rotating disk and the dividing disk is obtained, where the scale difference is the angular difference between the bushing and the sleeve.

[0019] In the technical solution of the present invention, when it is necessary to detect the angular difference between the bushing and the sleeve of the torsion beam, the operator first operates the support plate to rotate in the direction of the wheel hub close to the torsion beam, so that the claw assembly is inserted into the wheel hub hole and abuts against the hole wall of the wheel hub hole, and then fixes one end of the detection fixture to the torsion beam, and then operates the dividing plate to rotate in the direction of the sleeve close to the torsion beam. Since the bushing is sleeved in the sleeve, the first locating pin can be inserted into the center hole of the bushing, and the second locating pin can be inserted into the locating hole of the bushing to ensure that the deflection direction of the rotating disk is consistent with the deflection direction of the bushing, and at the same time ensure that the dividing plate and the sleeve are in the same plane. At this time, the scale on the dividing plate is the reference scale. By obtaining the scale difference between the rotating disk and the dividing plate, the angular difference between the bushing and the sleeve can be obtained. The measurement process is simple and convenient, and the angular difference between the bushing and the sleeve can be obtained without complex calculations. Therefore, in the above technical solution, the angular difference between the bushing and the sleeve can be quickly obtained by simply fixing the positioning structure in the wheel hub hole and then obtaining the scale difference between the dividing plate and the rotating plate in the measuring structure, thereby improving the detection efficiency. Moreover, the structure of the detection fixture is relatively simple and reliable to use. It is also easy to carry and saves space. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the structure of a detection fixture in one embodiment of the present invention;

[0022] Figure 2 A schematic structural diagram of a detection fixture from another perspective in one embodiment of the invention;

[0023] Figure 3 A schematic structural diagram of a torsion beam according to an embodiment of the present invention;

[0024] Figure 4 Schematic diagram of the detection method in one embodiment of the present invention.

[0025] Description of Figure Numbers:

[0026]

[0027]

[0028] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0032] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0033] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] The present invention provides a detection jig and a detection method, aiming to solve the problem that the existing detection jig has a complicated operation process when measuring the deviation angle of a bushing and a sleeve of a torsion beam.

[0035] like Figure 1 As Figure 3 As shown, in one embodiment of the present invention, the detection fixture 100 includes a connecting rod 10, a positioning structure 20 and a measuring structure 30, the positioning structure 20 includes a support plate 21 and a claw assembly 22 connected to each other, and the support plate 21 is rotatably connected to one end of the connecting rod 10; the measuring structure 30 includes a rotating disk 31 and a measuring assembly 32 connected to each other, and the rotating disk 31 is rotatably connected to the end of the connecting rod 10 away from the support plate 21, and the measuring assembly 32 includes a rotating disk 321, a first positioning pin 322 and a second positioning pin 32 3. The rotating disk 321 is rotatably connected to the indexing disk 31, and both the rotating disk 321 and the indexing disk 31 are provided with scales. The first positioning pin 322 and the second positioning pin 323 are both provided on the rotating disk 321; the claw assembly 22 is used to be inserted into the hub hole 320c of the torsion beam 300 and abut against the hole wall of the hub hole 320c. The first positioning pin 322 is used to be inserted into the center hole, and the second positioning pin 323 is used to be inserted into the positioning hole to obtain the scale difference between the rotating disk 321 and the indexing disk 31. The angular difference is the scale difference.

[0036] In the above embodiment, when it is necessary to detect the angular difference between the bushing 200 and the sleeve 320a of the torsion beam 300, the operator first operates the support plate 21 to rotate in the direction close to the hub 320b of the torsion beam 300, so that the claw assembly 22 is inserted into the hub hole 320c and abuts against the hole wall of the hub hole 320c, and then fixes one end of the detection fixture 100 to the torsion beam 300, and then operates the dividing plate 31 to rotate in the direction close to the sleeve of the torsion beam 300. Since the bushing 200 is sleeved in the sleeve, the first positioning pin 322 can be inserted into the center hole of the bushing 200, and the second positioning pin 323 can be inserted into the bushing. 200, to ensure that the deflection direction of the rotating disk 321 is consistent with the deflection direction of the bushing 200, and at the same time ensure that the dividing plate 31 and the sleeve 320a are in the same plane. At this time, the scale on the dividing plate 31 is the reference scale. By obtaining the scale difference between the rotating disk 321 and the dividing plate 31, the angle difference between the bushing 200 and the sleeve 320a can be obtained. The measurement and operation process is simple and convenient, and the angle difference between the bushing 200 and the sleeve 320a can be obtained without complex calculations, thereby improving the detection efficiency. Moreover, the structure of the detection fixture 100 is relatively simple and reliable to use. It is also easy to carry and saves space.

[0037] Among them, the support plate 21 includes a support portion 211 and two mounting portions 212, both of which are connected to the support portion 211, and the two mounting portions 212 are symmetrically distributed about the support portion 211. The symmetrical distribution can make the force on the support plate 21 more uniform. In a preferred embodiment, the support portion 211 and the mounting portion 212 are an integrally formed structure. The integrally formed structure can improve the mechanical strength of the entire structure to improve the rigidity of the connection between the support portion 211 and the mounting portion 212, ensuring that the position will not bend or deform, thereby improving the service life of the detection fixture 100; at the same time, the one-piece structure is simple and the number of structural components is small, which can reduce the steps required for production and processing, greatly shorten the production cycle, and save production costs; the number of claw assemblies 22 is two, and the two claw assemblies 22 are correspondingly connected to the two mounting portions 212. The two claw assemblies 22 are both used to insert into the hub hole 320c of the torsion beam 300 and abut against the hole wall of the hub hole 320c. Specifically, the torsion beam 300 includes a crossbeam 310 and two mounting assemblies 320, and the two mounting assemblies 320 are respectively connected to the two ends of the crossbeam 310, and each mounting assembly 320 includes a hub 320b and a sleeve 320a connected to each other, and the bushing 200 is sleeved in the sleeve 320a; by setting the number of claw assemblies 22 to be consistent with the number of hubs 320b, and inserting them one by one into the hub holes 320c of the hubs 320b, it can be ensured that the detection fixture 100 can detect the angular difference between the bushings 200 and the corresponding sleeves 320a on both sides of the crossbeam 310, thereby improving the scope of application and detection efficiency of the detection fixture 100, having the advantage of easy operation, and also improving the service life of the detection fixture 100, further ensuring that the installation of the bushing 200 and the sleeve 320a meets the design requirements.

[0038] Furthermore, each claw assembly 22 includes a plurality of claws 221, one of which is located at one end of the mounting portion 212 away from the support portion 211, and the remaining claws 221 are located on opposite sides of the mounting portion 212. The plurality of claws 221 all abut against the wall of the wheel hub hole 320c. In each claw assembly 22, when the support plate 21 rotates to drive the claw assembly 22 into the wheel hub hole 320c, the plurality of claws 221 all abut against the wall of the wheel hub hole 320c, ensuring the stability of the connection between the positioning structure 20 and the wheel hub 320b, thereby ensuring the accuracy and stability of the angular difference between the bushing 200 and the sleeve 320a measured by the measuring structure 30, while also improving measurement accuracy. This approach has the advantages of being simple in structure and easy to implement. In actual use, the number of claws 221 in each claw assembly 22 is three, one claw 221 is located at one end of the mounting portion 212 away from the supporting portion 211 , and the other two claws 221 are located on opposite sides of the mounting portion 212 .

[0039] Specifically, the plurality of claws 221 are each made of die steel, a type of steel used to manufacture molds such as cold stamping dies, hot forging dies, and die-casting dies. Die steel has high strength and wear resistance, as well as excellent corrosion resistance, which can ensure the service life of the claws 221. Furthermore, the die steel can be Cr12 die steel, an alloy tool steel with good hardenability and good wear resistance. This can enhance the friction between the claws 221 and the wall of the hub hole 320c, thereby ensuring the effectiveness of the abutment between the claws 221 and the wall of the hub hole 320c, thereby improving the effectiveness and stability of the positioning structure 20 fixed to the hub 320b of the torsion beam 300.

[0040] The scale on the rotating disk 321 is a first scale 321a, which is located on the outer circumference of the rotating disk 321. The scale on the indexing disk 31 is a second scale 311, which is located on the outer circumference of the indexing disk 31. When the scale line of the first scale 321a and the middle scale line of the second scale 311 coincide, the installation angle error between the bushing 200 and the sleeve 320a is 0 degrees. The provision of the first scale 321a and the second scale 311 has the advantages of being easy to read and intuitive and clear. The operator can easily determine the scale difference between the first scale 321a and the second scale 311, and then quickly determine the angular difference between the bushing 200 and the sleeve 320a. The measurement and operation process is simple and convenient, reducing the number of steps for the operator and improving detection efficiency.

[0041] In one embodiment, there are at least two second locating pins 323, which are evenly distributed on the rotating disk 321. The number of locating holes is at least two, and the number of second locating pins 323 matches the number of locating holes and is arranged in a one-to-one correspondence. Specifically, when the indexing disk 31 rotates toward the sleeve 320a of the torsion beam 300, the rotating disk 321 is rotated so that the first locating pin 322 is inserted into the center hole of the bushing 200, and the second locating pins 323 are respectively inserted into the corresponding locating holes of the bushing 200. This allows the deflection direction of the rotating disk 321 to be consistent with the deflection direction of the bushing 200. Therefore, the operator can obtain the angular difference between the bushing 200 and the sleeve 320a by measuring the scale difference between the rotating disk 321 and the indexing disk 31. During actual use, there are two second positioning pins 323. The three-point positioning of the rotating disk 321 can be achieved through the first positioning pin 322 and the two second positioning pins 323, ensuring that no deflection occurs between the rotating disk 321 and the bushing 200, further improving the accuracy of the detection results. The positioning pin has the advantages of simple structure and convenient connection. At the same time, the positioning pin can limit the freedom of movement of the rotating disk 321, and can ensure higher positioning accuracy.

[0042] Furthermore, the positioning structure 20 also includes a first fastener, the support plate 21 is provided with a first mounting hole, the first fastener is connected to one end of the connecting rod 10 through the first mounting hole, specifically, the support plate 21 can be rotated in the direction close to the hub 320b of the torsion beam 300 until the claw assembly 22 is inserted into the hub hole 320c, and when the claw 221 abuts against the hole wall of the hub hole 320c, the support plate 21 and the connecting rod 10 are fixed by the first fastener to ensure that the positioning structure 20 is fixed in the hub 320b; the measuring structure 30 also includes a second fastener, the indexing plate 31 is provided with a second mounting hole, the second fastener The measuring assembly 32 is connected to the other end of the connecting rod 10 through the second mounting hole. Specifically, the indexing plate 31 can be rotated toward the sleeve 320a of the torsion beam 300 until the first locating pin 322 on the measuring assembly 32 is inserted into the center hole of the bushing 200 and the second locating pin 323 is inserted into the locating hole of the bushing 200. The indexing plate 31 and the connecting rod 10 are then fixed by the second fastener to ensure that the measuring structure 30 is fixed to the bushing 200. This method has the advantages of simple structure and ease of implementation. It is also convenient for operators to operate and can improve the accuracy of detecting the angular difference between the bushing 200 and the sleeve 320a. In actual use, both the first fastener and the second fastener can be plug bolts. Bolts have the advantages of easy installation and disassembly and a tight connection.

[0043] In one embodiment, a first gripping handle 213 is provided on a side of the support plate 21 facing away from the claw assembly 22 , and a second gripping handle 33 is provided on a side of the indexing plate 31 facing away from the rotating plate 321 . Specifically, by setting a first gripping handle 213, the operator can drive the support plate 21 to rotate toward the direction of the hub 320b close to the torsion beam 300 by operating the first gripping handle 213, so that the claw assembly 22 is inserted into the hub hole 320c, and ensure that the claws 221 of the claw assembly 22 are all in contact with the hole wall of the hub hole 320c; by setting a second gripping handle 33, the operator can drive the dividing plate 31 to rotate toward the direction of the sleeve 320a close to the torsion beam 300 by operating the second gripping handle 33, and the bushing 200 is sleeved in the sleeve 320a to ensure that the first positioning pin 322 on the measuring assembly 32 can be inserted into the center hole of the bushing 200, and the second positioning pin 323 is inserted into the positioning hole of the bushing 200, thereby facilitating the operator's grip and operation of the detection fixture 100, further reducing the operator's workload, and improving the measurement efficiency of the angle difference between the bushing 200 and the sleeve 320a.

[0044] Based on the above embodiment, the first gripping handle 213 and the second gripping handle 33 are both chamfered at their four corners, effectively preventing the operator from being scratched by sharp edges when gripping them. The handles are comfortable to hold, improving the operator's comfort and safety when using the inspection jig 100. In actual use, the handles can be made of bakelite, which reduces friction during gripping and further prevents injuries to the operator. Furthermore, the bakelite handles also serve a decorative purpose, making the inspection jig 100 appear more refined.

[0045] In addition, please refer to Figure 4 The present invention also provides a detection method, which uses the detection fixture 100 as described above, and the positioning method includes:

[0046] Insert the claw assembly 22 into the wheel hub hole 320c and abut against the hole wall of the wheel hub hole 320c;

[0047] Rotate the rotating disk 321 to insert the first positioning pin 322 into the center hole of the bushing 200 and the second positioning pin 323 into the positioning hole of the bushing 200;

[0048] The scale difference between the rotating disk 321 and the indexing disk 31 is obtained, and the scale difference is the angle difference between the bushing 200 and the sleeve 320a.

[0049] In the above embodiment, when it is necessary to detect the angular difference between the bushing 200 and the sleeve 320a of the torsion beam 300, the operator first operates the support plate 21 to rotate in the direction close to the hub 320b of the torsion beam 300, so that the claw assembly 22 is inserted into the hub hole 320c and abuts against the hole wall of the hub hole 320c, and then fixes one end of the detection fixture 100 to the torsion beam 300, and then operates the dividing plate 31 to rotate in the direction close to the sleeve of the torsion beam 300. Since the bushing 200 is sleeved in the sleeve, the first positioning pin 322 can be inserted into the center hole of the bushing 200, and the second positioning pin 323 can be inserted into the center hole of the bushing 200. The positioning hole is used to ensure that the deflection direction of the rotating disk 321 is consistent with the deflection direction of the bushing 200, and at the same time ensure that the dividing plate 31 and the sleeve 320a are in the same plane. At this time, the scale on the dividing plate 31 is the reference scale. By obtaining the scale difference between the rotating disk 321 and the dividing plate 31, the angle difference between the bushing 200 and the sleeve 320a can be obtained. The measurement and operation process is simple and convenient, and the angle difference between the bushing 200 and the sleeve 320a can be obtained without complex calculations. The detection fixture 100 has a relatively simple structure and is reliable to use. It is also easy to carry, saves space, improves detection efficiency, and thus improves overall work efficiency.

[0050] Since the detection method adopts the detection jig 100 as described above, the detection method has all the beneficial effects of the detection jig 100 described above, which will not be described in detail here.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A detection jig for detecting the angle difference between a bushing and a sleeve of a torsion beam, wherein the bushing is sleeved in the sleeve of the torsion beam, and a center hole and a positioning hole are opened on the bushing, characterized in that: The detection fixture includes: Connecting rod; A positioning structure comprising a supporting plate and a claw assembly connected to each other, wherein the supporting plate is rotatably connected to one end of the connecting rod; The measuring structure includes a dividing plate and a measuring assembly that are rotatably connected to each other, and the dividing plate is rotatably connected to the end of the connecting rod away from the support plate. The measuring assembly includes a rotating plate, a first positioning pin and a second positioning pin. The rotating plate is rotatably connected to the dividing plate, and both the rotating plate and the dividing plate are provided with scales. The first positioning pin and the second positioning pin are both provided on the rotating plate. The claw assembly is used to be inserted into the hub hole of the torsion beam and abut against the hole wall of the hub hole. The first positioning pin is used to be inserted into the center hole, and the second positioning pin is used to be inserted into the positioning hole to obtain the scale difference between the rotating plate and the dividing plate, and the angular difference is the scale difference. The support plate includes a support portion and two mounting portions, the two mounting portions are both connected to the support portion and are symmetrically distributed about the support portion, there are two claw assemblies, the two claw assemblies are correspondingly connected to the two mounting portions, and the two claw assemblies are both used to be inserted into the hub hole of the torsion beam and abut against the hole wall of the hub hole; the support portion and the two mounting portions are integrally formed; Each of the claw assemblies includes a plurality of claws, one of which is located at an end of the mounting portion away from the support portion, and the remaining claws are located on opposite sides of the mounting portion, and the plurality of claws are all in contact with the hole wall of the wheel hub hole; The scale on the rotating disk is a first scale, which is arranged on the outer circumference of the rotating disk. The scale on the indexing disk is a second scale, which is arranged on the outer circumference of the indexing disk.

2. The detection fixture according to claim 1, characterized in that: The plurality of clamping claws are all made of die steel.

3. The detection jig according to any one of claims 1 to 2, characterized in that: The number of the second positioning pins is at least two, and the plurality of second positioning pins are evenly distributed on the rotating disk. The number of the positioning holes is at least two, and the number of the second positioning pins is consistent with the number of the positioning holes and is arranged in a one-to-one correspondence.

4. The detection jig according to any one of claims 1 to 2, characterized in that: The positioning structure also includes a first fastener, the support plate is provided with a first mounting hole, and the first fastener is connected to one end of the connecting rod through the first mounting hole; and / or the measuring structure also includes a second fastener, the dividing plate is provided with a second mounting hole, and the second fastener is connected to the other end of the connecting rod through the second mounting hole.

5. The detection jig according to any one of claims 1 to 2, characterized in that: A first gripping handle is provided on a side of the support plate away from the claw assembly, and a second gripping handle is provided on a side of the indexing plate away from the rotating plate.

6. The detection fixture according to claim 5, characterized in that: The first gripping handle and the second gripping handle are both square handles, and four corners of the first gripping handle and the second gripping handle are both chamfered.

7. A detection method, characterized in that: The detection method adopts the detection fixture according to any one of claims 1 to 6, and the positioning method includes: Inserting the claw assembly into the wheel hub hole and abutting against the hole wall of the wheel hub hole; Rotating the rotating disk to insert the first positioning pin into the center hole of the bushing, and to insert the second positioning pin into the positioning hole of the bushing; The scale difference between the rotating disk and the dividing disk is obtained, where the scale difference is the angular difference between the bushing and the sleeve.

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