A bearing inspection tool and method of use thereof

Abstract

This invention discloses a bearing inspection fixture and its usage method, relating to the field of bearing inspection technology. It includes a mounting cabinet, a detection mechanism mounted on the top of the mounting cabinet for simultaneously detecting the width and inner / outer diameter of the bearing, a guide chute fixedly mounted on the top of the mounting cabinet for storing and conveying bearings, a limiting plate fixedly mounted on the top of the mounting cabinet, a feeding assembly disposed on the top of the mounting cabinet, and a limiting assembly disposed between the mounting cabinet and the guide chute, with the limiting assembly and feeding assembly working in tandem. This invention utilizes the coordinated use of the mounting cabinet, the inspection mechanism, and the feeding assembly. When the feeding assembly conveys the bearing to be inspected to the bottom of the inspection mechanism, a first cylinder can drive the mounting housing to descend, allowing the width detection assembly and the inner / outer diameter detection assembly to simultaneously detect the width and inner / outer diameter of the bearing, thereby improving the bearing inspection efficiency.

Description

Technical Field

[0001] This invention relates to the field of bearing testing technology, and in particular to a bearing testing fixture and its usage method. Background Technology

[0002] As a key component in mechanical transmission systems, the accuracy of bearings' dimensional parameters, such as outer diameter, inner diameter, and width, directly affects the operational stability and service life of mechanical equipment. Therefore, these parameters must be rigorously tested during the production process.

[0003] In existing technologies for inspecting bearing races, one inspection item is typically performed on the bearing race at one inspection station, and then the bearing race is transported to another inspection item station using a conveying mechanism. Depending on the number of inspection items for the bearing race, different inspection item stations need to be set up, such as the width, inner diameter, and outer diameter of the bearing race. This not only reduces the efficiency of bearing inspection, but also increases the equipment manufacturing cost due to the multiple functions and multiple conveying mechanisms, thus having certain defects.

[0004] Therefore, a bearing testing fixture and its usage method are designed to solve or alleviate the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a bearing inspection fixture and its usage method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a bearing inspection fixture, comprising:

[0007] The mounting cabinet contains a control terminal.

[0008] The testing mechanism is installed on the top of the mounting cabinet and is used to simultaneously test the width and inner and outer diameters of the bearing.

[0009] A material guide trough is fixedly installed on the top of the mounting cabinet and is used for storing and transporting bearings.

[0010] A material limiting plate is fixedly installed on the top of the mounting cabinet, and a material discharge groove matching the material guide groove is opened on the top of the material limiting plate;

[0011] A feeding assembly is located on the top of the mounting cabinet. The feeding assembly works in conjunction with the limiting plate to feed the bearing.

[0012] A material limiting component is disposed between the mounting cabinet and the material guide chute, and the material limiting component is linked with the feeding component.

[0013] Preferably, the testing organization includes:

[0014] The base is fixedly connected to the top of the mounting cabinet;

[0015] Mounting bracket, which is fixedly mounted on the top of the base;

[0016] The mounting base and the first cylinder are slidably connected to the front of the mounting frame, and the first cylinder is fixedly mounted on the top of the mounting frame. The output end of the first cylinder is connected to the mounting base in a transmission manner.

[0017] The mounting housing is fixedly mounted on the front side of the mounting base;

[0018] A width detection component is mounted on a mounting housing and is used to detect the width of the bearing.

[0019] An inner and outer diameter detection assembly is mounted on a mounting housing and is used to detect the inner and outer diameters of a bearing.

[0020] Preferably, the width detection component includes:

[0021] A connecting sleeve, the outer wall of which is slidably inserted into the mounting housing;

[0022] The detection head is fixedly connected to the bottom of the connecting sleeve, and a wear-resistant block is fixedly installed on the side of the bottom of the detection head. The detection head is used to protect the detection end of the inner and outer diameter detection assembly.

[0023] The first plate is fixedly sleeved on the top of the outer wall of the connecting sleeve, and the first plate is slidably sleeved inside the mounting housing.

[0024] The second plate is disposed inside the mounting housing;

[0025] A first spring is disposed between a first plate and a second plate;

[0026] A pressure detection sensor is mounted on the top of the second plate.

[0027] The first grating is fixedly mounted on the back of the mounting base.

[0028] Preferably, the width detection component further includes:

[0029] The limiting post has its top fixedly connected to the mounting housing, its outer wall slidably connected to the connecting sleeve, and a through hole corresponding to the limiting post is provided at the bottom of the detection head.

[0030] A fixing plate, the end of which is fixedly connected to the mounting housing, the fixing plate being located at the bottom of the first plate;

[0031] A guide rod is fixedly connected between a fixed plate and a mounting housing. The outer wall of the guide rod is slidably inserted and sleeved with the first plate and the second plate. The first spring is slidably sleeved on the outside of the guide rod.

[0032] Preferably, the inner and outer diameter detection component includes:

[0033] The first slide block, the second slide block, the third slide block, and the fourth slide block are provided with a sliding hole at the bottom of the mounting housing. The outer walls of the first slide block, the second slide block, the third slide block, and the fourth slide block are slidably connected to the inner cavity of the sliding hole.

[0034] The detection probes are fixedly connected to the bottoms of the first slide, the second slide, the third slide, and the fourth slide, respectively.

[0035] A receiving hole is provided at the top of the detection head, and the bottom of the outer wall of the detection probe is located inside the receiving hole.

[0036] Connecting blocks, which are fixedly connected to the sides of the first slide, the second slide, the third slide, and the fourth slide respectively;

[0037] The second grating is fixedly installed on one side of the connecting block.

[0038] Preferably, the inner and outer diameter detection component further includes:

[0039] The second cylinder is fixedly installed on the side of the mounting housing;

[0040] A transmission rod is connected to the output end of the second cylinder, and the outer wall of the transmission rod is slidably inserted into the connecting block.

[0041] A drive block, which is fixedly connected to the outside of the transmission rod and is located on one side of the connecting block;

[0042] The second spring is slidably sleeved on the outside of the transmission rod, and the second spring is located on the side of the connecting block away from the driving block;

[0043] A fixing block is fixedly connected to the bottom of the inner wall of the mounting housing. The outer wall of the transmission rod is slidably inserted and sleeved with the fixing block. The fixing block is used to limit the second spring on the outer wall of the transmission rod.

[0044] Preferably, the feeding assembly includes:

[0045] A feeding plate is installed on the top of the mounting cabinet, and a third light grating is installed at the bottom of the feeding plate. The feeding plate is linked with the material limiting component.

[0046] A material storage groove is provided on one side of the feeding plate, and a detection notch is provided on the side of the inner wall of the material storage groove.

[0047] Mounting plate, one side of which is fixedly connected to the feeding plate;

[0048] A connecting rail and a connecting seat are provided. The connecting rail is fixedly connected to the top of the mounting cabinet, and the connecting seat is fixedly connected to the bottom of the mounting plate. The connecting seat is slidably engaged with the outside of the connecting rail.

[0049] A linear motor is fixedly installed on the top of the mounting cabinet, and the output platform of the linear motor is connected to the mounting plate via a transmission connection.

[0050] Preferably, the feeding assembly further includes:

[0051] A limiting roller is symmetrically mounted on the feeding plate and is used to limit the bearing inside the storage groove.

[0052] A support disc is rotatably mounted on the top of the mounting cabinet, and the top of the support disc is on the same plane as the top of the mounting cabinet.

[0053] The drive roller is rotatably mounted inside the installation chamber on one side of the limiting plate. The drive roller and the limiting roller are used to limit the bearing position.

[0054] A drive source is installed inside the mounting cabinet and is used to drive the bearing disc and drive rollers to rotate.

[0055] Preferably, the limiting component includes:

[0056] A connecting plate, wherein the connecting plate is disposed inside the mounting cabinet;

[0057] The insertion rod has its bottom fixedly connected to the connecting plate, and its outer wall slidably interlocks with the mounting cabinet and the guide chute.

[0058] A wedge is fixedly connected to the top of the connecting plate, and the top of the mounting cabinet has a connection hole corresponding to the wedge;

[0059] A fixed column, the top of which is fixedly connected to the mounting cabinet, and the outer wall of which is slidably inserted into the connecting plate;

[0060] A support spring, which is slidably sleeved on the outside of the fixed column;

[0061] A limiting collar is slidably sleeved on the outside of a fixed column, and a support spring is located between the limiting collar and a connecting plate.

[0062] A locking block is located at the bottom of the limiting collar, and a slot corresponding to the fixing post is provided on one side of the locking block;

[0063] A locking rod, one end of which is fixedly connected to a locking block, a mating hole is provided at the bottom of one side of the fixing post, the locking rod is located at the bottom of the inner cavity of the mating hole, an arc block is fixedly connected to the bottom of the locking rod, an arc groove is provided at the bottom of the inner wall of the mating hole, and the outer wall of the arc block is slidably engaged with the inner cavity of the arc groove.

[0064] Another objective of this invention is to provide a method for using a bearing inspection fixture, comprising the following specific steps:

[0065] S1: When using a testing mechanism to test a standard bearing, first place the standard bearing into the feed trough so that the standard bearing can calibrate the testing mechanism.

[0066] S2: When using the feeding assembly to transport standard bearings, determine whether the detection mechanism is in the upper storage state. When the detection mechanism is not in the upper storage state, the feeding assembly cannot run. Then, move the detection mechanism to the upper storage state and then let the feeding plate on the feeding assembly transport the standard bearings.

[0067] S3: When the feeding plate moves the standard bearing to the detection station at the bottom of the detection mechanism, the feeding plate stops moving, the first cylinder drives the mounting housing to descend, and the drive source drives the bearing disc and drive roller to rotate, thereby rotating the standard bearing, so that the width detection component and the inner and outer diameter detection component can detect the standard bearing. Based on the detection feedback results of the width detection component and the inner and outer diameter detection component, it is determined whether the detection mechanism and the feeding component need to be calibrated.

[0068] S4: When the test results of the standard bearing are qualified, the test mechanism and the feeding assembly do not need to be calibrated. When the test results of the standard bearing are unqualified, the test mechanism and the feeding assembly need to be calibrated. After the test mechanism and the feeding assembly are calibrated, repeat the above standard bearing calibration and testing steps until the test results of the standard bearing are qualified.

[0069] S5: The bearing to be tested is fed into the feed chute, and the testing mechanism and feeding assembly are used to test the bearing;

[0070] The steps for testing standard bearings using the width detection component and the inner / outer diameter detection component in section S include:

[0071] S3.1: The first cylinder drives the mounting housing to descend to the detection position. Before the mounting housing descends to the detection position, the bottom of the detection head is in contact with the top of the bearing. When the mounting housing descends to the detection position, the detection head pushes the first plate to slide upward inside the mounting housing through the limiting post. The first plate squeezes the first spring. The pressure of the first spring is detected by the pressure detection sensor. It is determined whether the value detected by the pressure detection sensor is within the standard range. When the value detected by the pressure detection sensor is within the standard range, the width of the bearing meets the standard product requirements. Otherwise, when the value detected by the pressure detection sensor is not within the standard range, the bearing is a non-conforming product.

[0072] S3.2: When the mounting housing descends, the detection probe slides down with the mounting housing, inserting into the inside and outside of the bearing. Then, the second cylinder drives the transmission rod to move towards the inside of the mounting housing. Under the action of the second spring, the first slide and the second slide slide relative to each other, so that the detection probe at the bottom of the first slide and the second slide is clamped and attached to the outer wall of the bearing. The outer diameter of the bearing is obtained through the information fed back by the second grating on the first slide and the second slide, and it is determined whether the outer diameter of the bearing is within the standard range. When the outer diameter of the bearing is within the standard range, the outer diameter of the bearing meets the standard product requirements. Otherwise, if the outer diameter of the bearing is not within the standard range, the bearing is a non-conforming product.

[0073] S3.3: Under the action of the second spring, the third and fourth slides slide in opposite directions, so that the detection probes at the bottom of the third and fourth slides are clamped and attached to the inner wall of the bearing. The inner diameter of the bearing is obtained by the information fed back by the second grating on the third and fourth slides, and it is determined whether the inner diameter of the bearing is within the standard range. When the inner diameter of the bearing is within the standard range, the inner diameter of the bearing meets the standard product requirements. Otherwise, if the inner diameter of the bearing is not within the standard range, the bearing is a non-conforming product.

[0074] The technical effects and advantages of this invention are as follows:

[0075] This invention utilizes the combined use of an installation cabinet, a testing mechanism, and a feeding assembly. The testing mechanism includes a mounting frame, a first cylinder, a mounting housing, a width testing assembly, and an inner and outer diameter testing assembly. When the feeding assembly delivers the bearing to be tested to the bottom of the testing mechanism, the first cylinder can drive the mounting housing to descend, allowing the width testing assembly and the inner and outer diameter testing assembly to simultaneously test the width and inner and outer diameters of the bearing, thereby improving the bearing testing efficiency.

[0076] This invention utilizes the combined use of a detection mechanism, a guide trough, a limiting plate, a feeding assembly, and a limiting assembly. The feeding assembly uses a single-axis reciprocating motion for feeding. When the feeding assembly moves to the guide trough, it can release the limiting assembly from restricting the bearing inside the guide trough, allowing the bearing inside the guide trough to enter the feeding assembly. Then, when the feeding assembly transports the bearing to the detection station, the limiting assembly automatically blocks and limits the bearing inside the guide trough, thereby achieving automated feeding. Moreover, the single-axis reciprocating motion feeding assembly can reduce its manufacturing cost and operating energy consumption. Attached Figure Description

[0077] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0078] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0079] Figure 2 This is a schematic diagram of the overall structure of the mounting bracket of the present invention.

[0080] Figure 3 This is a schematic diagram of the internal structure of the mounting bracket on the side of the present invention.

[0081] Figure 4 This is a schematic diagram of the overall structure of the detection head of the present invention.

[0082] Figure 5 This is a schematic diagram of the internal structure of the mounting housing of the present invention.

[0083] Figure 6 This is a schematic diagram of the internal structure of the side of the mounting housing of the present invention.

[0084] Figure 7 This is a top-view schematic diagram of the internal structure of the mounting housing of the present invention.

[0085] Figure 8 For the present invention Figure 1 Enlarged structural diagram at point A in the middle.

[0086] Figure 9 This is a schematic diagram of the overall structure of the feeding plate of the present invention.

[0087] Figure 10 This is a schematic diagram of the internal structure of the side of the mounting cabinet of the present invention.

[0088] Figure 11 This is a flowchart of the calibration process for the testing mechanism of this invention.

[0089] Figure 12 This is a flowchart illustrating the judgment process of the bearing detection mechanism of the present invention.

[0090] In the attached diagram: 1. Mounting cabinet; 2. Detection mechanism; 21. Base; 22. Mounting bracket; 23. Mounting seat; 24. First cylinder; 25. Mounting housing; 26. Width detection assembly; 261. Connecting sleeve; 262. Detection head; 263. Limiting post; 264. First plate; 265. Second plate; 266. First spring; 267. Wear-resistant block; 268. Guide rod; 269. Fixing plate; 2610. Pressure detection sensor; 2611. First grating; 27. Inner and outer diameter detection assembly; 271. First slide; 272. Second slide; 273. Third slide; 274. Fourth slide; 275. Detection probe; 276. Receiving... 277. Connecting block; 278. Second grating; 279. Second cylinder; 2710. Transmission rod; 2711. Drive block; 2712. Second spring; 2713. Fixing block; 3. Guide chute; 4. Limiting plate; 5. Feeding assembly; 51. Feeding plate; 52. Storage groove; 53. Mounting plate; 54. Connecting rail; 55. Connecting seat; 56. Linear motor; 57. Limiting roller; 58. Bearing disc; 59. Drive roller; 510. Drive source; 6. Limiting assembly; 61. Connecting plate; 62. Insert rod; 63. Wedge; 64. Fixing column; 65. Limiting collar; 66. Support spring; 67. Locking block; 68. Locking rod. Detailed Implementation

[0091] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0092] This invention provides, for example Figures 1-12 The image shows a bearing inspection fixture.

[0093] Example 1: Includes a mounting cabinet 1, a testing mechanism 2, a guide chute 3, a limiting plate 4, a feeding assembly 5, and a limiting assembly 6. A control terminal is installed inside the mounting cabinet 1 to control the operation of the testing mechanism 2 and the feeding assembly 5. A discharge chute is provided on the top of the mounting cabinet 1 to discharge the tested bearings. A sorting machine is also installed to sort the discharged bearings. The sorting machine is a mature existing product and will not be described in detail here. The testing mechanism 2 is installed on the top of the mounting cabinet 1 and is used to simultaneously test the width and inner / outer diameter of the bearings, thereby improving the testing efficiency. The guide chute 3 is fixedly installed on the top of the mounting cabinet 1 and is used for storing and transporting bearings. The feeding assembly 5 is located on the top of the mounting cabinet 1. The feeding assembly 5 works in conjunction with the limiting plate 4 to feed the bearings, thereby ensuring the stability of the bearing feeding. The limiting assembly 6 is located between the mounting cabinet 1 and the feeding assembly 5. The limiting assembly 6 is linked with the feeding assembly 5. That is, when the feeding assembly 5 does not receive the bearings, the limiting assembly 6 is used to limit the bearings in the feeding assembly 3 to prevent the bearings from continuing to flow out. The limiting plate 4 is connected to the external vibrating feeding plate 4, which can automatically feed the bearings in the feeding assembly 3. The limiting plate 4 is fixedly installed on the top of the mounting cabinet 1. The limiting plate 4 has a discharge groove that matches the feeding assembly 3, so that the bearings in the feeding assembly 3 can flow out from the discharge groove. The feeding assembly 5 is connected to the external vibrating feeding plate 4, which can automatically feed the bearings in the feeding assembly 3. The limiting assembly 6 can automatically feed the bearings in the feeding assembly 3 to prevent the bearings from continuing to flow out.

[0094] Furthermore, the testing mechanism 2 includes a base 21, a mounting bracket 22, a mounting seat 23, a first cylinder 24, a mounting housing 25, a width detection component 26, and an inner and outer diameter detection component 27. The base 21 is fixedly connected to the top of the mounting cabinet 1, the mounting bracket 22 is fixedly mounted on the top of the base 21, and multiple mounting brackets 22 are mounted on the base 21, so that the width detection component 26 and the inner and outer diameter detection component 27 on the multiple mounting brackets 22 can simultaneously detect multiple bearings. The mounting seat 23 is slidably connected to the front of the mounting bracket 22, and the first cylinder 24 is fixedly mounted on the base 25. The top of the mounting bracket 22 has the output end of the first cylinder 24 connected to the mounting base 23. The mounting housing 25 is fixedly mounted on the front of the mounting base 23. The width detection component 26 is mounted on the mounting housing 25 and is used to detect the width of the bearing. The inner and outer diameter detection component 27 is mounted on the mounting housing 25 and is used to detect the inner and outer diameters of the bearing. The first cylinder 24 can drive the mounting housing 25 to move up and down, thereby causing the mounting housing 25 to drive the width detection component 26 and the inner and outer diameter detection component 27 to move downwards.

[0095] Furthermore, the width detection assembly 26 includes a connecting sleeve 261, a detection head 262, a first plate 264, a second plate 265, a first spring 266, a pressure detection sensor 2610, and a first grating 2611. The outer wall of the connecting sleeve 261 is slidably inserted into the mounting housing 25. The detection head 262 is fixedly connected to the bottom of the connecting sleeve 261. A wear-resistant block 267 is fixedly installed on the side of the bottom of the detection head 262. The wear-resistant block 267 is installed by bolts, so that the wear-resistant block 267 can be replaced. The cross-section is arc-shaped and its outer wall is smooth, which reduces the friction between the wear-resistant block 267 and the bearing. The wear-resistant block 267 is replaced periodically according to the degree of wear. The detection head 262 also protects the detection end of the inner and outer diameter detection assembly 27. The first plate 264 is fixedly sleeved on the top of the outer wall of the connecting sleeve 261. The first plate 264 is slidably sleeved inside the mounting housing 25. The second plate 265 is disposed inside the mounting housing 25. The first spring 266 is disposed between the first plate 264 and the second plate 265 for pressure detection. Sensor 2610 is mounted on the top of the second plate 265, and first grating 2611 is fixedly mounted on the back of mounting base 23. First grating 2611 can detect the height of mounting housing 25. Thus, when the wear-resistant block 267 at the bottom of the detection head 262 is in contact with the bearing, the detection head 262 cannot continue to slide down. When the mounting housing 25 slides down, the detection head 262 pushes the first plate 264 to slide up inside the mounting housing 25 through the limiting post 263. The first plate 264 compresses the first spring 266, which is detected by pressure sensor 2610. The pressure of the first spring 266, based on the elastic coefficient of the first spring 266, allows us to deduce the distance the detection head 262 moves relative to the mounting housing 25. Furthermore, by determining whether the distance the detection head 262 moves relative to the mounting housing 25 is the same as the distance moved when detecting a standard bearing, we can judge whether the width of the bearing is up to standard. Also, considering the service life of the first spring 266, it needs to be replaced periodically after its rated number of operations to reduce the impact of the spring's elastic coefficient decay on the accuracy of bearing detection.

[0096] Furthermore, the width detection assembly 26 also includes a limiting post 263, a fixing plate 269, and a guide rod 268. The top of the limiting post 263 is fixedly connected to the mounting housing 25, and the outer wall of the limiting post 263 is slidably sleeved with the connecting sleeve 261. The bottom of the detection head 262 has a through hole corresponding to the limiting post 263. The pressure detection sensor 2610 is a ring sensor that can be sleeved on the bottom of the limiting post 263. The limiting post 263 can limit the minimum descent height of the mounting housing 25, that is, the bottom of the limiting post 263 is fixed to the mounting housing 25. When the top of the cabinet 1 is in contact with the housing, the mounting housing 25 descends to the inspection station. The end of the fixing plate 269 is fixedly connected to the mounting housing 25. The fixing plate 269 is located at the bottom of the first plate 264. The guide rod 268 is fixedly connected between the fixing plate 269 and the mounting housing 25. The outer wall of the guide rod 268 is slidably inserted and sleeved with the first plate 264 and the second plate 265. The first spring 266 is slidably sleeved on the outside of the guide rod 268. The guide rod 268 can ensure the stability of the first plate 264 and the first spring 266 during operation.

[0097] Furthermore, the inner and outer diameter detection assembly 27 includes a first slide 271, a second slide 272, a third slide 273, a fourth slide 274, a detection probe 275, a receiving hole 276, a connecting block 277, and a second grating 278. A sliding hole is provided at the bottom of the mounting housing 25. The outer walls of the first slide 271, second slide 272, third slide 273, and fourth slide 274 are all slidably connected to the inner cavity of the sliding hole. The detection probe 275 is fixedly connected to the bottom of the first slide 271, second slide 272, third slide 273, and fourth slide 274, respectively. Figure 5 and Figure 7 As shown, when the first slide 271 and the second slide 272 move in opposite directions, the detection probes 275 at the bottom of the first slide 271 and the second slide 272 can clamp the two sides of the outer wall of the bearing. When the third slide 273 and the fourth slide 274 move in opposite directions, the detection probes 275 at the bottom of the third slide 273 and the fourth slide 274 can clamp the two sides of the inner wall of the bearing. The receiving hole 276 is opened at the top of the detection head 262, and the bottom of the outer wall of the detection probe 275 is located inside the receiving hole 276, so that the detection head 262 can position the detection probe 275. The housing 25 is protected by a 75-type sensor. When the bottom of the detection head 262 is in contact with the bearing, the housing 25 continues to descend, and the detection probe 275 can pass through the receiving hole 276 to detect the inner and outer diameters of the bearing. The connecting block 277 is fixedly connected to the sides of the first slide 271, the second slide 272, the third slide 273 and the fourth slide 274 respectively. The second grating 278 is fixedly installed on one side of the connecting block 277. The position information of the detection probe 275 can be fed back through the second grating 278, so that the data of the inner and outer diameters of the bearing can be calculated.

[0098] Furthermore, the inner and outer diameter detection assembly 27 also includes a second cylinder 279, a transmission rod 2710, a drive block 2711, a second spring 2712, and a fixing block 2713. The second cylinder 279 is fixedly installed on the side of the mounting housing 25. The transmission rod 2710 is drivenly connected to the output end of the second cylinder 279. The outer wall of the transmission rod 2710 is slidably inserted into the connecting block 277. The drive block 2711 is fixedly connected to the outside of the transmission rod 2710 and is located on one side of the connecting block 277. Figure 7 As shown, one of the second cylinders 279 pulls the first slide block 271 and the fourth slide block 274 to move via the transmission rod 2710, the drive block 2711, and the connecting block 277. The other second cylinder 279 pulls the second slide block 272 and the third slide block 273 to move via the transmission rod 2710, the drive block 2711, and the connecting block 277. This causes the detection probes 275 at the bottom of the first slide block 271 and the second slide block 272 to move in opposite directions, and the detection probes 275 at the bottom of the third slide block 273 and the fourth slide block 274 to move relative to each other. Therefore, when the mounting housing 25 descends, the detection probes... Rod 275 can be inserted into the inner and outer sides of the bearing. The second spring 2712 is slidably sleeved on the outside of the transmission rod 2710. The second spring 2712 is located on the side of the connecting block 277 opposite to the driving block 2711. The fixing block 2713 is fixedly connected to the bottom of the inner wall of the mounting housing 25. The outer wall of the transmission rod 2710 is slidably sleeved with the fixing block 2713. The fixing block 2713 is used to limit the movement of the second spring 2712 on the outer wall of the transmission rod 2710. When the insertion detection probe 275 is inserted into the inner and outer sides of the bearing, the second cylinder 279 pushes the transmission rod 2710 to reset and move. Figure 7 As shown, under the action of the second spring 2712, the first slide block 271 and the second slide block 272 slide relative to each other, so that the detection probes 275 at the bottom of the first slide block 271 and the second slide block 272 are clamped and attached to the outer wall of the bearing. The third slide block 273 and the fourth slide block 274 slide in opposite directions, so that the detection probes 275 at the bottom of the third slide block 273 and the fourth slide block 274 are clamped and attached to the inner wall of the bearing.

[0099] Example 2: Based on Example 1, the feeding assembly 5 includes a feeding plate 51, a storage groove 52, a mounting plate 53, a connecting rail 54, a connecting seat 55, and a linear motor 56. The feeding plate 51 is located on the top of the mounting cabinet 1. A third grating is installed at the bottom of the feeding plate 51. The first grating 2611, the second grating 278, and the third grating are all obtained by installing grating rulers at their corresponding positions, converting displacement into optical signals, and then obtaining position information through photoelectric conversion and signal processing. This is an existing electronic product and will not be described in detail here. The feeding plate 51 is linked with the limiting assembly 6. The storage groove 52 is opened on one side of the feeding plate 51, so that the bearing is located in the storage groove 52, and on the limiting plate 4... Under certain conditions, the stability of the feeding plate 51 in conveying the bearing can be guaranteed. The inner wall of the storage groove 52 is provided with a detection notch to facilitate the insertion of the detection probe 275 and prevent the feeding plate 51 from affecting the operation of the detection probe 275. One side of the mounting plate 53 is fixedly connected to the feeding plate 51. The connecting rail 54 is fixedly connected to the top of the mounting cabinet 1. The connecting seat 55 is fixedly connected to the bottom of the mounting plate 53 and is slidably engaged with the outside of the connecting rail 54. The linear motor 56 is fixedly installed on the top of the mounting cabinet 1. The output platform of the linear motor 56 is connected to the mounting plate 53 for transmission. Under the action of the linear motor 56, the connecting seat 55 and the connecting rail 54, the feeding plate 51 can move back and forth on the mounting cabinet 1.

[0100] Furthermore, the feeding assembly 5 also includes limiting rollers 57, a bearing disc 58, a drive roller 59, and a drive source 510. The limiting rollers 57 are symmetrically rotated and mounted on the feeding plate 51. The two limiting rollers 57 are used to limit the bearing inside the storage groove 52. The bearing disc 58 is rotatably mounted on the top of the mounting cabinet 1, and the top of the bearing disc 58 is on the same plane as the top of the mounting cabinet 1. An installation chamber is opened on one side of the limiting plate 4. The drive roller 59 is rotatably mounted inside the installation chamber. The drive roller 59 and the limiting rollers 57 are used to limit the bearing. When the drive roller 59 and the two limiting rollers 57 clamp and limit the bearing, the center point of the bearing is located at the center point of the detection station at the bottom of the detection mechanism 2, thereby ensuring... To ensure accuracy during bearing inspection, the drive source 510 is installed inside the mounting cabinet 1. The drive source 510 is used to drive the bearing disc 58 and drive roller 59 to rotate. The drive source 510 consists of a motor, shaft, synchronous pulley, and synchronous belt, thereby driving the bearing disc 58 and drive roller 59 to rotate. This is existing technology and will not be described in detail here. When the bearing disc 58 and drive roller 59 rotate, they can drive the bearing to rotate, thereby enabling multi-directional inspection of the bearing. Both the drive roller 59 and the limiting roller 57 are fitted with rubber sleeves, which not only increase the compressive force between them and the bearing but also prevent scratches on the bearing exterior. As the rubber sleeves are used and worn, they need to be replaced and maintained regularly.

[0101] Specifically, the material limiting component 6 includes a connecting plate 61, a rod 62, a wedge 63, a fixing post 64, a support spring 66, a limiting collar 65, a locking block 67, and a locking rod 68. The connecting plate 61 is disposed inside the mounting cabinet 1. The bottom of the rod 62 is fixedly connected to the connecting plate 61, and the outer wall of the rod 62 is slidably inserted and sleeved with the mounting cabinet 1 and the material guide chute 3. The wedge 63 is fixedly connected to the top of the connecting plate 61, and the top of the mounting cabinet 1 has a corresponding opening for the wedge 63. The connecting hole and the top of the wedge 63 are inclined. When the feeding plate 51 presses the wedge 63, the wedge 63 can drive the insertion rod 62 to descend through the connecting plate 61, thereby releasing the limitation of the insertion rod 62 on the bearing inside the guide groove 3. The top of the fixing column 64 is fixedly connected to the mounting cabinet 1. The outer wall of the fixing column 64 is slidably inserted and sleeved with the connecting plate 61. The support spring 66 is slidably sleeved on the outside of the fixing column 64. The limiting collar 65 is slidably sleeved on the outside of the fixing column 64. The support spring 66 is located between the limiting collar 65 and the connecting plate 61. When the feeding plate 51 separates from the wedge 63, the connecting plate 61 drives the insertion rod 62 to rise under the action of the support spring 66, thereby limiting the bearing inside the guide groove 3 and preventing the bearing inside the guide groove 3 from continuously flowing out. The locking block 67 is located at the bottom of the limiting collar 65. A slot corresponding to the fixing post 64 is opened on one side of the locking block 67. One end of the locking rod 68 is fixedly connected to the locking block 67. A docking hole is opened at the bottom of one side of the fixing post 64. The locking rod 68 is located at the bottom of the inner cavity of the docking hole. An arc block is fixedly connected to the bottom of the locking rod 68. An arc groove is opened at the bottom of the inner wall of the docking hole. The outer wall of the arc block slides and engages with the inner cavity of the arc groove. The arc block can improve the stability of the locking rod 68 engaging inside the docking hole. When the locking block 67 is removed, the limiting collar 65 can be directly removed, and then the support spring 66 and the connecting plate 61 can be disassembled, maintained, or replaced.

[0102] Another objective of this invention is to provide a method for using a bearing inspection fixture, comprising the following specific steps:

[0103] S1: When using the testing mechanism 2 to test the standard bearing, first put the standard bearing into the feed trough 3 so that the standard bearing can verify the testing mechanism 2.

[0104] S2: When using the feeding assembly 5 to transport standard bearings, determine whether the detection mechanism 2 is in the upper storage state. If the detection mechanism 2 is not in the upper storage state, the feeding assembly 5 cannot operate. Then, move the detection mechanism 2 to the upper storage state, and then make the feeding plate 51 on the feeding assembly 5 transport the standard bearings. That is, the feeding assembly 5 moves towards the guide trough 3. The feeding plate 51 on the feeding assembly 5 presses the wedge 63 down. The wedge 63 drives the insertion rod 62 down through the connecting plate 61. The insertion rod 62 no longer restricts the standard bearings inside the guide trough 3. When the storage groove 52 on the feeding plate 51 corresponds to the guide groove 3, the standard bearing inside the guide groove 3 slides into the storage groove 52. The feeding plate 51 continues to move until the storage grooves 52 on the feeding plate 51 are all filled with standard bearings. The feeding plate 51 moves in the opposite direction. Since the storage grooves 52 contain standard bearings, the standard bearings in the guide groove 3 no longer flow out. When the feeding plate 51 separates from the wedge 63, under the action of the support spring 66, the connecting plate 61 drives the insertion rod 62 to rise. The insertion rod 62 limits the standard bearing inside the guide groove 3.

[0105] S3: When the feeding plate 51 moves the standard bearing to the detection station at the bottom of the detection mechanism 2, the feeding plate 51 stops moving, the first cylinder 24 drives the mounting housing 25 to descend, and the drive source 510 drives the bearing disc 58 and the drive roller 59 to rotate, thereby rotating the standard bearing, so that the width detection component 26 and the inner and outer diameter detection component 27 can detect the standard bearing. Based on the detection feedback results of the width detection component 26 and the inner and outer diameter detection component 27, it is determined whether the detection mechanism 2 and the feeding component 5 need to be calibrated.

[0106] S4: When the result of the test of the standard bearing by the testing agency 2 is a qualified product, it is not necessary to calibrate the testing agency 2 and the feeding component 5. When the result of the test of the standard bearing by the testing agency 2 is a non-qualified product, it is necessary to calibrate the testing agency 2 and the feeding component 5. After the testing agency 2 and the feeding component 5 are calibrated, the above standard bearing calibration and testing steps are repeated until the result of the test of the standard bearing by the testing agency 2 is a qualified product.

[0107] S5: The bearing to be tested is conveyed to the guide trough 3, and the testing mechanism 2 and the feeding assembly 5 are used to test the bearing to be tested.

[0108] The steps for inspecting standard bearings using the width detection component 26 and the inner / outer diameter detection component 27 in S3 include:

[0109] S3.1: The first cylinder 24 drives the mounting housing 25 to descend to the detection position, that is, the lower detection position information is set. When the position information transmitted by the first grating 2611 corresponds to the lower detection position information, the mounting housing 25 descends to the detection position. Before the mounting housing 25 descends to the detection position, the bottom of the detection head 262 is in contact with the top of the bearing. When the mounting housing 25 descends to the detection position, the detection head 262 pushes the first plate 264 to slide upward inside the mounting housing 25 through the limiting post 263. The first plate 264 squeezes the first spring 266. The pressure of the first spring 266 is detected by the pressure detection sensor 2610. It is determined whether the value detected by the pressure detection sensor 2610 is within the standard range. When the value detected by the pressure detection sensor 2610 is within the standard range, the width of the bearing meets the standard product requirements. Conversely, when the value detected by the pressure detection sensor 2610 is not within the standard range, the bearing is a defective product.

[0110] S3.2: When the mounting housing 25 descends, the detection probe 275 slides down with the mounting housing 25. The detection probe 275 is inserted into the inside and outside of the bearing. Then, the second cylinder 279 drives the transmission rod 2710 to move towards the inside of the mounting housing 25. Under the action of the second spring 2712, the first slide 271 and the second slide 272 slide relative to each other, so that the detection probe 275 at the bottom of the first slide 271 and the second slide 272 is clamped and attached to the outer wall of the bearing. The information fed back by the second grating 278 on the first slide 271 and the second slide 272, that is, the distance difference between the two second gratings 278 on the first slide 271 and the second slide 272, is used to determine the outer diameter of the bearing and whether the outer diameter of the bearing is within the standard range. When the outer diameter of the bearing is within the standard range, the outer diameter of the bearing meets the standard product requirements. Otherwise, if the outer diameter of the bearing is not within the standard range, the bearing is a defective product.

[0111] S3.3: Under the action of the second spring 2712, the third slide 273 and the fourth slide 274 slide in opposite directions, causing the detection probes 275 at the bottom of the third slide 273 and the fourth slide 274 to clamp against the inner wall of the bearing. Based on the information fed back by the second gratings 278 on the third slide 273 and the fourth slide 274, i.e., the distance difference between the two second gratings 278 on the third slide 273 and the fourth slide 274, the inner diameter of the bearing is determined. It is then determined whether the inner diameter of the bearing is within the standard range. If the inner diameter is within the standard range, the bearing meets the standard product requirements; otherwise, if the inner diameter is not within the standard range, the bearing is a defective product. After the bearing inspection is completed, the two second gratings 275... Cylinder 279 drives transmission rod 2710 to move in the opposite direction, causing transmission rod 2710 to drive first slide 271 and second slide 272 to slide in opposite directions through drive block 2711 and connecting block 277, and third slide 273 and fourth slide 274 to slide relative to each other. This causes the detection probes 275 at the bottom of first slide 271 and second slide 272 to separate from the outer diameter of the bearing, and the detection probes 275 at the bottom of third slide 273 and fourth slide 274 to separate from the inner diameter of the bearing. Then, first cylinder 24 drives mounting housing 25 to rise to the upper storage position. Then, linear motor 56 drives mounting plate 53 and feeding plate 51 to slide, causing the bearings on feeding plate 51 to be discharged from the discharge chute at the top of mounting cabinet 1. An external sorting machine is then used to sort out unqualified bearings.

[0112] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bearing inspection fixture, characterized in that: include: The installation cabinet (1) contains a control terminal; A detection mechanism (2) is installed on the top of a mounting cabinet (1), on which a mounting housing (25) is installed. The detection mechanism (2) is used to simultaneously detect the width and inner and outer diameters of the bearing. The detection mechanism (2) includes a width detection component (26) and an inner and outer diameter detection component (27) installed inside the mounting housing (25). The mounting housing (25) is used to drive the detection components to move up and down. The width detection component (26) includes: The connecting sleeve (261) has its outer wall slidably inserted into the mounting housing (25); The detection head (262) is fixedly connected to the bottom of the connecting sleeve (261), and the detection head (262) is used to protect the detection end of the inner and outer diameter detection assembly (27); The first plate (264) is fixedly sleeved on the top of the outer wall of the connecting sleeve (261), and the first plate (264) is slidably sleeved inside the mounting housing (25); The second plate (265) is disposed inside the mounting housing (25); A first spring (266) is disposed between a first plate (264) and a second plate (265); A pressure sensor (2610) is used to detect the pressure of the first spring (266); The first grating (2611) is used to detect the height of the mounting housing (25); The inner and outer diameter detection component (27) includes: The first slide (271), the second slide (272), the third slide (273) and the fourth slide (274) are provided with sliding holes at the bottom of the mounting housing (25), and the four slides are slidably connected to the inner cavity of the sliding holes; Four detection probes (275) are fixedly connected to the bottom of the four slides respectively. During the test, the detection probes (275) are inserted into the inner and outer sides of the bearing. A receiving hole (276) is provided on the top of the detection head (262), and the bottom of the outer wall of the detection probe (275) is located inside the receiving hole (276); Four connecting blocks (277) are fixedly connected to the sides of the four slides respectively; Four second gratings (278) are fixedly installed on one side of the four connecting blocks (277) respectively, and are used to provide feedback on the position information of the four detection probes (275); The guide trough (3) is fixedly installed on the top of the mounting cabinet (1) and is used for storing and transporting bearings. Material limiting plate (4), the material limiting plate (4) is fixedly installed on the top of the installation cabinet (1), and the top of the material limiting plate (4) is provided with a discharge groove that matches the material guide groove (3); The feeding assembly (5) is located on the top of the mounting cabinet (1). The feeding assembly (5) works in conjunction with the limiting plate (4) to feed the bearing. Material limiting component (6) is disposed between the installation cabinet (1) and the guide chute (3), and the material limiting component (6) is linked with the feeding component (5).

2. The bearing testing fixture according to claim 1, characterized in that: The testing organization (2) includes: The base (21) is fixedly connected to the top of the mounting cabinet (1); Mounting bracket (22), which is fixedly mounted on the top of base (21); The mounting base (23) and the first cylinder (24) are slidably connected to the front of the mounting frame (22), the first cylinder (24) is fixedly installed on the top of the mounting frame (22), the output end of the first cylinder (24) is connected to the mounting base (23) in a transmission manner, and the mounting housing (25) is fixedly installed on the front of the mounting base (23).

3. The bearing inspection fixture according to claim 2, characterized in that: A wear-resistant block (267) is fixedly installed on the side of the bottom of the detection head (262), the pressure detection sensor (2610) is installed on the top of the second plate (265), and the first grating (2611) is fixedly installed on the back of the mounting base (23).

4. The bearing inspection fixture according to claim 3, characterized in that: The width detection component (26) also includes: The limiting post (263) is fixedly connected to the top of the mounting housing (25), and the outer wall of the limiting post (263) is slidably sleeved with the connecting sleeve (261). The bottom of the detection head (262) is provided with a through hole corresponding to the limiting post (263). A fixing plate (269) is fixedly connected at its end to the mounting housing (25), and the fixing plate (269) is located at the bottom of the first plate (264); Guide rod (268) is fixedly connected between fixed plate (269) and mounting housing (25). The outer wall of guide rod (268) is slidably inserted and sleeved with first plate (264) and second plate (265). First spring (266) is slidably sleeved on the outside of guide rod (268).

5. The bearing inspection fixture according to claim 4, characterized in that: The inner and outer diameter detection assembly (27) also includes: The second cylinder (279) is fixedly installed on the side of the mounting housing (25); The transmission rod (2710) is connected to the output end of the second cylinder (279), and the outer wall of the transmission rod (2710) is slidably inserted and sleeved with the connecting block (277). A drive block (2711) is fixedly connected to the outside of the transmission rod (2710), and the drive block (2711) is located on one side of the connecting block (277); The second spring (2712) is slidably sleeved on the outside of the transmission rod (2710), and the second spring (2712) is located on the side of the connecting block (277) away from the drive block (2711); The fixing block (2713) is fixedly connected to the bottom of the inner wall of the mounting housing (25). The outer wall of the transmission rod (2710) is slidably inserted and sleeved with the fixing block (2713). The fixing block (2713) is used to limit the second spring (2712) on the outer wall of the transmission rod (2710).

6. The bearing inspection fixture according to claim 1, characterized in that: The feeding assembly (5) includes: Feeding plate (51), the feeding plate (51) is set on the top of the mounting cabinet (1), the bottom of the feeding plate (51) is equipped with a third grating, and the feeding plate (51) is linked with the limiting component (6); Storage groove (52), the storage groove (52) is opened on one side of the feeding plate (51), and the inner wall of the storage groove (52) is provided with a detection notch; Mounting plate (53), one side of which is fixedly connected to feeding plate (51); Connecting rail (54) and connecting seat (55), the connecting rail (54) is fixedly connected to the top of the mounting cabinet (1), the connecting seat (55) is fixedly connected to the bottom of the mounting plate (53), and the connecting seat (55) is slidably engaged with the outside of the connecting rail (54); A linear motor (56) is fixedly installed on the top of the mounting cabinet (1), and the output platform of the linear motor (56) is connected to the mounting plate (53) for transmission.

7. The bearing testing fixture according to claim 6, characterized in that: The feeding assembly (5) also includes: Limiting roller (57), the limiting roller (57) is symmetrically rotated and installed on the feeding plate (51), the limiting roller (57) is used to limit the bearing inside the storage groove (52); A support disc (58) is rotatably mounted on the top of the mounting cabinet (1), and the top of the support disc (58) is on the same plane as the top of the mounting cabinet (1). The drive roller (59) is provided with an installation chamber on one side of the limiting plate (4). The drive roller (59) is rotatably installed inside the installation chamber. The drive roller (59) and the limiting roller (57) are used to limit the bearing. A drive source (510) is installed inside the mounting cabinet (1) and is used to drive the bearing disc (58) and the drive roller (59) to rotate.

8. The bearing inspection fixture according to claim 7, characterized in that: The limiting component (6) includes: A connecting plate (61) is disposed inside the mounting cabinet (1); Insert rod (62), the bottom of the insert rod (62) is fixedly connected to the connecting plate (61), and the outer wall of the insert rod (62) is slidably inserted and sleeved with the mounting cabinet (1) and the guide groove (3); A wedge (63) is fixedly connected to the top of the connecting plate (61), and the top of the mounting cabinet (1) is provided with a connection hole corresponding to the wedge (63); A fixed column (64) is fixedly connected to the top of the mounting cabinet (1), and the outer wall of the fixed column (64) is slidably inserted into the connecting plate (61). A support spring (66) is slidably sleeved on the outside of a fixed post (64); A limiting collar (65) is slidably sleeved on the outside of a fixed post (64), and a support spring (66) is located between the limiting collar (65) and the connecting plate (61). Locking block (67), the locking block (67) is located at the bottom of the limiting collar (65), and a slot corresponding to the fixing post (64) is provided on one side of the locking block (67); A locking rod (68) is fixedly connected to a locking block (67) at one end. A docking hole is provided at the bottom of one side of the fixing post (64). The locking rod (68) is located at the bottom of the inner cavity of the docking hole. An arc block is fixedly connected to the bottom of the locking rod (68). An arc groove is provided at the bottom of the inner wall of the docking hole. The outer wall of the arc block is slidably engaged with the inner cavity of the arc groove.

9. A method of using a bearing testing fixture, implementing the bearing testing fixture according to any one of claims 1-8, characterized in that: The specific steps include the following: S1: When using the testing mechanism (2) to test the standard bearing, first put the standard bearing into the feed trough (3) so that the standard bearing can verify the testing mechanism (2); S2: When using the feeding assembly (5) to transport the standard bearing, determine whether the detection mechanism (2) is in the upper storage state. When the detection mechanism (2) is not in the upper storage state, the feeding assembly (5) cannot run. Then, the detection mechanism (2) is moved to the upper storage state, and then the feeding plate (51) on the feeding assembly (5) transports the standard bearing. S3: When the feeding plate (51) moves the standard bearing to the detection station at the bottom of the detection mechanism (2), the feeding plate (51) stops moving, the first cylinder (24) drives the mounting housing (25) to descend, and the drive source (510) drives the bearing disc (58) and drive roller (59) to rotate, thereby rotating the standard bearing, so that the width detection component (26) and the inner and outer diameter detection component (27) can detect the standard bearing. Based on the detection feedback results of the width detection component (26) and the inner and outer diameter detection component (27), it is determined whether the detection mechanism (2) and the feeding component (5) need to be calibrated. S4: When the test result of the test institution (2) is a qualified product, it is not necessary to calibrate the test institution (2) and the feeding assembly (5). When the test result of the test institution (2) is an unqualified product, it is necessary to calibrate the test institution (2) and the feeding assembly (5). After the test institution (2) and the feeding assembly (5) are calibrated, repeat the above standard bearing calibration test steps until the test result of the test institution (2) is a qualified product. S5: The bearing to be tested is transported to the guide trough (3), and the testing mechanism (2) and the feeding assembly (5) are used to test the bearing; The steps for inspecting the standard bearing using the width detection component (26) and the inner and outer diameter detection component (27) in S3 include: S3.1: The first cylinder (24) drives the mounting housing (25) to descend to the detection position. Before the mounting housing (25) descends to the detection position, the bottom of the detection head (262) is in contact with the top of the bearing. When the mounting housing (25) descends to the detection position, the detection head (262) pushes the first plate (264) to slide up inside the mounting housing (25) through the limiting post (263). The first plate (264) squeezes the first spring (266). The pressure of the first spring (266) is detected by the pressure detection sensor (2610). It is determined whether the value detected by the pressure detection sensor (2610) is within the standard range. When the value detected by the pressure detection sensor (2610) is within the standard range, the width of the bearing meets the standard product requirements. Conversely, when the value detected by the pressure detection sensor (2610) is not within the standard range, the bearing is a non-conforming product. S3.2: When the mounting housing (25) descends, the detection probe (275) slides down with the mounting housing (25), inserting the detection probe (275) into the inside and outside of the bearing. Then, the second cylinder (279) drives the transmission rod (2710) to move towards the inside of the mounting housing (25). Under the action of the second spring (2712), the first slide (271) and the second slide (272) slide relative to each other, so that the detection probe (275) at the bottom of the first slide (271) and the second slide (272) is clamped and attached to the outer wall of the bearing. The outer diameter of the bearing is determined by the information fed back by the second grating (278) on the first slide (271) and the second slide (272). It is determined whether the outer diameter of the bearing is within the standard range. When the outer diameter of the bearing is within the standard range, If the outer diameter of the bearing meets the standard product requirements, then the bearing is considered unqualified if the outer diameter of the bearing does not meet the standard range. S3.3: Under the action of the second spring (2712), the third slide (273) and the fourth slide (274) slide in opposite directions, so that the detection probe (275) at the bottom of the third slide (273) and the fourth slide (274) is clamped and attached to the inner wall of the bearing. The inner diameter of the bearing is obtained by the information fed back by the second grating (278) on the third slide (273) and the fourth slide (274). It is determined whether the inner diameter of the bearing is within the standard range. If the inner diameter of the bearing is within the standard range, then the bearing meets the standard product requirements. Otherwise, if the inner diameter of the bearing does not meet the standard range, then the bearing is considered unqualified.

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