Bearing race detection device with synchronous positioning function and detection method

Abstract

The present invention discloses a bearing ring detection device and detection method with a synchronous positioning function, which belongs to the field of bearing processing. The detection device of the present invention has a clamping mechanism that is rotatably connected to a mounting seat, and the clamping mechanism includes a clamping drive member, a support plate, and a plurality of clamping members slidably arranged on the support plate. One end of the clamping member is arranged away from the support plate and formed into a clamping claw, and the other end of the clamping member is connected to a rack; the moving end of the clamping drive member is connected to a driving gear, and the rack and the driving gear are connected by transmission. Therefore, before detecting the bearing ring, the driving gear drives the plurality of clamping members to move away from each other synchronously through the transmission member to complete the clamping of the bearing ring. This synchronous clamping method can improve the accuracy of the positioning of the bearing ring when it is clamped, so that the distance between the center point of the bearing ring and the detection mechanism is relatively constant, thereby improving the accuracy of the detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing processing, and more particularly to a bearing ring detection device and a detection method with a synchronous positioning function. Background Art

[0002] Bearing rings are annular parts of radial rolling bearings with one or more raceways. They are one of the key components of bearings, and the quality of bearing rings is directly related to the quality of bearings. Generally speaking, after the production of bearing rings, the surface of the bearing rings needs to be inspected. If the surface defects of the bearing rings are serious, they should be discarded or reworked.

[0003] At present, in the relevant field, there are many detection devices for detecting surface defects of bearing rings. For example, the Chinese patent document with application number 2020114737466 discloses a bearing ring surface defect detection device based on visual inspection, which includes a base, a No. 1 shell and a detection unit; the No. 1 shell is fixedly connected to the top of the base; the detection unit is arranged inside the No. 1 shell; the detection unit includes a cylinder, a No. 1 push rod, a No. 1 push plate, a circular runout detector, a motor and a rectangular block; the cylinder is fixedly connected to the top of the No. 1 shell; the No. 1 push rod is fixedly connected to the output end of the cylinder; the top of the No. 1 push plate is fixedly connected to the top inner wall of the No. 1 shell by a spring, and the two sides of the No. 1 push plate are in a sliding fit state with the inner wall of the No. 1 shell; the circular runout detector is fixedly connected to the bottom of the No. 1 push plate; the motor is fixedly connected to the bottom of the base; the output shaft of the motor is fixedly connected to a rotating shaft; it is convenient to realize the detection of surface defects of the bearing ring.

[0004] For example, the Chinese patent document with application number 2018222751020 discloses a measuring system for detecting the inner and outer roundness of bearing rings, which includes an automatic feeding device, a roundness measuring device and a workbench; the automatic feeding device is used to feed several bearing rings into the roundness measuring device in sequence for roundness measurement; the shaft head of the rotary motor is correspondingly connected to the center of the bottom surface of the four-jaw chuck; a groove is provided on the upper surface of the workbench, the plane bearing is mounted on the bottom surface of the groove, the four-jaw chuck is mounted on the plane bearing, and the upper disk surface of the four-jaw chuck is flush with the upper surface of the workbench; the lifting device is installed on the upper surface of the workbench, and the detection cross bar corresponds to the two adjacent supporting parts on the rear side of the four-jaw chuck; the detection cross bar body is slidingly provided with an outer circle measuring rod and an inner circle measuring rod, and the lower ends of the outer circle measuring rod and the inner circle measuring rod are respectively provided with sensors corresponding to the inner side surfaces; this measuring system can not only systematically detect the roundness of a large number of bearing rings, but also can efficiently measure the inner and outer roundness of the bearing rings.

[0005] For another example, the Chinese patent document with application number 201921881692X discloses a detection system for bearing rings, including a base plate, a vertical rod, a horizontal rod, a first detection mechanism, a second detection mechanism, a rotating motor and a rotating table. The vertical rod is vertically fixedly mounted on the top of the base plate, the horizontal rod is horizontally fixedly mounted on the top of the vertical rod, the first detection mechanism is slidably mounted on the vertical rod, the second detection mechanism is slidably mounted on the horizontal rod, the rotating motor is fixedly mounted on the top of the base plate, the end of the rotating shaft of the rotating motor is fixedly connected to the bottom end of the rotating table, the first detection mechanism is located between the rotating table and the vertical rod, and the second detection mechanism is located on the upper part of the rotating table.

[0006] However, during the inspection of the bearing ring, the jaws of a conventional clamping device are not synchronized well, which may result in inaccurate positioning of the bearing ring; thereby causing a large deviation between the inspection result of the bearing ring and the actual result. Summary of the Invention

[0007] 1. Technical problem to be solved by the invention

[0008] The purpose of the present invention is to overcome the problem in the prior art that the detection results of bearing rings are prone to large deviations from the actual results, and to provide a bearing ring detection device and detection method with a synchronous positioning function, aiming to improve the accuracy of the bearing ring detection results.

[0009] 2. Technical solution

[0010] In order to achieve the above object, the technical solution provided by the present invention is:

[0011] The present invention provides a bearing ring detection device with a synchronous positioning function, comprising:

[0012] Mounting seat,

[0013] A clamping mechanism, the clamping mechanism being rotatably connected to the mounting seat, the clamping mechanism comprising a clamping drive, a support plate, and a plurality of clamping members slidably disposed on the support plate, one end of the clamping member being disposed away from the support plate and forming a clamping claw, and the other end of the clamping member being connected to a rack; a moving end of the clamping drive is connected to a driving gear, the rack being in transmission connection with the driving gear, and the clamping drive is used to drive all the clamping members to synchronously move away from / approach each other to achieve clamping / releasing of the bearing ring;

[0014] a driving mechanism, the driving mechanism being fixedly mounted on the mounting seat and configured to drive the clamping mechanism to rotate relative to the mounting seat;

[0015] A detection mechanism is arranged on one side of the mounting seat, a camera of the detection mechanism is arranged toward the clamping mechanism, and the camera is used to photograph the surface of the bearing ring on the clamping mechanism.

[0016] Furthermore, a transmission member is provided between the rack and the driving gear, and the transmission member includes a primary transmission gear and a secondary transmission gear arranged on the primary transmission gear; the primary transmission gear is engaged with the driving gear, and the secondary transmission gear is engaged with the rack, and the primary transmission gear and the secondary transmission gear are concentrically arranged.

[0017] Furthermore, the diameter of the primary transmission gear is greater than the radius of the secondary transmission gear.

[0018] Furthermore, the number of the clamping members is more than four, and the more than four clamping members are arranged along the circumference of the driving gear, and the distances between adjacent clamping members are equal.

[0019] Furthermore, a sliding groove is provided on the support plate at a position corresponding to the clamping member, and one end of the clamping member connected to the rack is located below the support plate; the clamping drive member is located below the support plate.

[0020] Furthermore, the clamping member includes a sliding seat, which is supported on the support plate; a clamping claw is provided on the upper side of the sliding seat, and a sliding rod is provided on the lower side of the sliding seat; the sliding rod passes through the sliding groove and is arranged toward the clamping drive member, and the rack is provided on the side of the sliding rod facing the secondary transmission gear.

[0021] Furthermore, a sliding block is provided on the side of the sliding rod facing away from the secondary transmission gear, and a sliding rail cooperating with the sliding block is provided on the lower side of the support plate.

[0022] Furthermore, the free end of the clamping claw is provided with a limiting portion with a step structure, and the edge of the bearing ring rests on the limiting portion.

[0023] Furthermore, the limiting portion is arranged on the outer side of the clamping claw, and the inner edge of the bearing ring is placed on the limiting portion.

[0024] Furthermore, a bearing is provided on the support plate, and the moving end of the clamping drive member is rotatably connected to the support plate through the bearing.

[0025] The method of the present invention for performing detection using the above-mentioned detection device comprises the following steps:

[0026] Step 1: Using a clamping drive member of the clamping mechanism to drive the plurality of clamping members away from each other, so that the plurality of clamping members clamp the bearing ring from the inner side of the bearing ring;

[0027] Step 2: The driving mechanism drives the clamping mechanism to rotate relative to the detection mechanism, and the camera of the detection mechanism photographs the surface of the bearing ring to complete the sampling;

[0028] Step 3: Use the clamping driving member of the clamping mechanism to drive several clamping members closer to each other so that the clamping members and the bearing ring are in a loose state; then, remove the bearing ring from the clamping mechanism.

[0029] 3. Beneficial effects

[0030] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0031] (1) The detection device of the present invention has a clamping mechanism that is rotatably connected to the mounting seat. The clamping mechanism includes a clamping drive, a support plate, and a plurality of clamping members slidably arranged on the support plate. One end of the clamping member is arranged away from the support plate and formed into a clamping claw, and the other end of the clamping member is connected to a rack. The moving end of the clamping drive is connected to a driving gear, and the rack and the driving gear are connected by transmission. Therefore, before detecting the bearing ring, the driving gear drives the plurality of clamping members to move away from each other synchronously through the transmission member to complete the clamping of the bearing ring. This synchronous clamping method can improve the accuracy of the positioning of the bearing ring when it is clamped, so that the distance between the center point of the bearing ring and the detection mechanism is relatively constant, reducing the error caused by the deviation of the relative positions of the two, thereby improving the accuracy of the detection result. After the detection is completed, the driving gear drives the plurality of clamping members to move closer to each other synchronously through the transmission member, and the bearing ring and the clamping member become loose, so that the bearing ring can be removed from the clamping mechanism.

[0032] (2) In the present invention, a transmission member is provided between the rack and the driving gear, and the transmission member includes a primary transmission gear and a secondary transmission gear provided on the primary transmission gear; the primary transmission gear is engaged with the driving gear, and the secondary transmission gear is engaged with the rack, and the primary transmission gear and the secondary transmission gear are concentrically arranged; the diameter of the primary transmission gear is larger than the radius of the secondary transmission gear, and thus, through a smaller transmission ratio between the secondary transmission gear and the primary transmission gear, the linear velocity of the rack is reduced while the angular velocity of the driving gear remains unchanged, thereby improving the accuracy of clamping and positioning.

[0033] (3) In the present invention, the clamping member includes a sliding seat, which is supported on a support plate; a clamping claw is provided on the upper side of the sliding seat, and a sliding rod is provided on the lower side of the sliding seat; the sliding rod passes through the sliding groove and is arranged toward the clamping drive member, and a rack is provided on the side of the sliding rod facing the secondary transmission gear; a slider is provided on the side of the sliding rod facing away from the secondary transmission gear, and a slide rail cooperating with the slider is provided on the lower side of the support plate, thereby limiting the movement of the clamping member in the sliding groove along the width direction of the sliding groove through the cooperation of the rack and the secondary transmission gear, and the slider and the slide rail, thereby improving the stability of the movement process of the clamping member, thereby further improving the accuracy of the clamping and positioning of the bearing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the structure of the detection device of the present invention;

[0035] Figure 2 Schematic diagram of the cooperation between the driving mechanism and the clamping mechanism in the present invention;

[0036] Figure 3 Schematic diagram of the structure of the clamping mechanism of the present invention;

[0037] Figure 4 Schematic diagram of the cooperation between the driving gear, the transmission member and the clamping clamp in the present invention;

[0038] Figure 5 Schematic diagram of the transmission mode between the clamping member and the clamping drive member in the present invention. DETAILED DESCRIPTION

[0039] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings and embodiments.

[0040] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for understanding and reading by those familiar with this technology. They are not used to limit the conditions for implementation of the present invention and therefore have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose of the present invention. At the same time, terms such as "upper", "lower", "left", "right", and "middle" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation. Changes or adjustments in their relative relationships should also be considered as the scope of implementation of the present invention without substantially changing the technical content.

[0041] This embodiment provides a bearing ring detection device with a synchronous positioning function. Figure 1The detection device of this embodiment may include a mounting base 100 , a driving mechanism 200 , a clamping mechanism 300 , a detection mechanism 400 and an illumination mechanism 500 .

[0042] The clamping mechanism 300 is rotatably connected to the mounting base 100, the driving mechanism 200 can be fixed to the mounting base 100, the detecting mechanism 400 can be located on one side of the mounting base 100, and the lighting mechanism 500 can be located above the clamping mechanism 300. The clamping mechanism 300 is used to clamp, fix, and secure the bearing ring 600; the driving mechanism 200 and the clamping mechanism 300 are connected by a transmission mechanism, and the driving mechanism 200 is used to drive the clamping mechanism 300 to move relative to the mounting base 100 to complete the movement of the bearing ring 600 relative to the detecting mechanism 400; the light source 510 of the lighting mechanism 500 is arranged toward the bearing ring 600 to provide light to the bearing ring 600; and the camera 410 of the detecting mechanism 400 can be arranged toward the clamping mechanism 300 to photograph the surface of the bearing ring 600 to complete sampling.

[0043] Reference Figure 2 The driving mechanism 200 may specifically include a rotating driving member 210, and a transmission wheel may be provided on the moving end of the rotating driving member 210, and the transmission wheel 220 is connected to the clamping mechanism 300 in a transmission manner. The rotating driving member 210 may be a stepping motor or a servo motor. The transmission wheel 220 may be a gear, and the clamping mechanism 300 is provided with a passive gear that cooperates with the transmission wheel 220, and the transmission wheel 220 and the clamping mechanism 300 are driven by the engagement of the gears; the transmission wheel 220 may also be a sprocket, and the clamping mechanism 300 is provided with a passive sprocket that cooperates with the transmission wheel 220, and the transmission wheel 220 and the clamping mechanism 300 are chain-driven; the transmission wheel 220 may also be a pulley, and the clamping mechanism 300 is provided with a passive pulley that cooperates with the transmission wheel 220, and the transmission wheel 220 and the clamping mechanism 300 are driven by a belt.

[0044] Reference Figure 3 In this embodiment, the clamping mechanism 300 may include a support plate 320, a clamping driver 340, and a plurality of clamping members 310. The clamping members 310 are slidably disposed on the support plate 320, and the clamping driver 340 is used to drive the clamping members 310 to slide relative to the support plate 320, so that the plurality of clamping members 310 move away from each other or move closer to each other.

[0045] Specifically, one end of the clamping member 310 can be set away from the support plate 320 and formed into a clamping claw 311. The clamping claws 311 of several clamping members 310 together form a clamping structure of the bearing ring 600; the other end of the clamping member 310 can be connected to the rack 314, and at the same time, a driving gear 343 can be provided on the moving end of the clamping drive member 340. The driving gear 343 is connected to the rack 314 through a transmission connection. When the clamping drive member 340 drives the driving gear 343 to rotate, the driving gear 343 directly / indirectly drives the rack 314 to move, thereby realizing that several clamping members 310 move synchronously relative to the support plate 320.

[0046] More specifically, when the clamping drive member 340 rotates forward to drive the driving gear 343 to rotate forward, the driving gear 343 drives the rack 314 to move away from the center of the support plate 320, so that all the clamping members 310 on the support plate 320 move away from each other and contact the inner side edge of the bearing ring 600, clamping and fixing it from the inner side of the bearing ring 600 to complete the positioning; when the clamping drive member 340 rotates reversely to drive the driving gear 343 to rotate reversely, the driving gear 343 drives the rack 314 to move close to the center of the support plate 320, so that all the clamping members 310 on the support plate 320 move close to each other, the bearing ring 600 and the clamping member 310 become loose, and the bearing ring 600 can be removed from the clamping mechanism 300.

[0047] Reference Figure 4 As a specific embodiment of the transmission method between the driving gear 343 and the rack 314, a transmission member 330 can be provided between the driving gear 343 and the rack 314. The transmission member 330 is used to change the relationship between the angular velocity of the driving gear 343 and the linear velocity of the rack 314 to improve the accuracy of positioning the bearing ring 600.

[0048] Specifically, the transmission member 330 may include a primary transmission gear 331 and a secondary transmission gear 332. The secondary transmission gear 332 is disposed on the primary transmission gear 331. The primary transmission gear 331 is configured to mesh with the driving gear 343, while the secondary transmission gear 332 is configured to mesh with the rack 314. The primary transmission gear 331 and the secondary transmission gear 332 may be concentrically disposed, i.e., the axis of the secondary transmission gear 332 may coincide with the axis of the primary transmission gear 331.

[0049] More specifically, the diameter of the primary transmission gear 331 can be larger than the diameter of the secondary transmission gear 332. In this case, when the angular velocity of the driving gear 343 remains unchanged, the linear velocity of the secondary transmission gear 331 will be lower than the linear velocity of the primary transmission gear. That is, when the angular velocity of the driving gear 343 remains unchanged, the rack 314 will move at a slower speed relative to the support plate 320, thereby further improving the positioning accuracy of the bearing ring 600 and preventing the clamping member 310 from damaging the surface of the bearing ring 600.

[0050] As a further optimization, the number of clamping members 310 can be four or more, for example, four, five, six, or even more. The four or more clamping members 310 can be arranged along the circumference of the driving gear 343, that is, the four or more clamping members 310 can be arranged along the circumference of the support plate 320. Furthermore, the distances between adjacent clamping members 310 can be equal, thereby providing a more uniform clamping force to the bearing ring 600 from the inner side thereof, thereby improving the stability of the clamping and fixing of the bearing ring 600.

[0051] Reference Figure 5 As a specific embodiment of the cooperation between the clamping member 310 and the support plate 320, a sliding groove can be provided on the support plate 320 at a position corresponding to the clamping member 310. The end of the clamping member 310 connected to the rack 314 can pass through the sliding groove on the support plate 320 and be disposed below the support plate 320. At the same time, the clamping drive member 340 is also disposed below the support plate 320. In this case, the clamping member 310 is supported on the support plate 320, which provides high stability. The clamping drive member 340 is in transmission connection with the clamping member 310 below the support plate 320, which can greatly simplify the structure of the clamping mechanism 300, thereby facilitating the driving mechanism 200 to drive the entire clamping mechanism 300 to rotate relative to the mounting base 100.

[0052] Specifically, the clamping member 310 may include a sliding seat 313, a clamping claw 311, and a sliding rod. The sliding seat 313 is supported on the support plate 320; the clamping claw 311 is provided on the upper side of the sliding seat 313, and the sliding rod is provided on the lower side of the sliding seat 313. The sliding rod passes through the sliding slot and is disposed toward the clamping drive member 340. A rack 314 is provided on the side of the sliding rod facing the secondary transmission gear.

[0053] In addition, a bearing 342 can be provided on the support plate 320, and the moving end of the clamping drive member 340 can cooperate with the bearing 342 and be rotatably connected to the support plate 320 through the bearing 342; in addition, the moving end of the clamping drive member 340 can also be provided with a drive shaft 341, the bearing 342 can cooperate with the drive shaft 341 on the moving end of the clamping drive member 340, and the driving gear 343 can be provided on the drive shaft 341.

[0054] As a further optimization, a slider can be provided on the side of the sliding rod facing away from the secondary transmission gear 332, and a slide rail 315 can be provided on the underside of the support plate 320. The slide rail 315 of the support plate 320 and the slider on the sliding rod form a sliding engagement. Therefore, in the above arrangement, the movement of the clamping member 310 within the sliding slot along its width is limited by the cooperation of the two kinematic pairs: the rack 314 and the secondary transmission gear 332, and the slider and slide rail 315. This improves the stability of the clamping member's movement and further enhances the accuracy of the bearing ring clamping and positioning.

[0055] In addition, a limiting portion 312 is provided at the free end of the clamping claw 311, which can be a stepped structure. When the clamping mechanism 300 is clamping the bearing ring 600, the edge of the bearing ring 600 can rest on the limiting portion 312, thereby facilitating the clamping and fixing of the bearing ring 600. When the clamping mechanism 300 no longer clamps the bearing ring 600, that is, when the clamping member 310 and the bearing ring 600 are in a relaxed state, the edge of the bearing ring 600 can also rest on the limiting portion 312 to prevent the bearing ring 600 from falling off the clamping mechanism 300.

[0056] As a further optimization, a limiting portion 312 can be provided on the outside of the clamping claw 311, and the inner edge of the bearing ring 600 can rest on the limiting portion 312. The limiting portions 312 of the multiple clamping claws 311 cooperate with each other to provide multi-point support for the bearing ring 600, further preventing the bearing ring 600 from falling off the clamping mechanism 300.

[0057] The method for detecting the bearing ring 600 using the above-mentioned bearing ring detection device with synchronous positioning function may specifically include the following steps:

[0058] Step 1: Use the clamping driving member 340 of the clamping mechanism 300 to drive the plurality of clamping members 310 away from each other, so that the plurality of clamping members 310 clamp the bearing ring 600 from the inner side of the bearing ring 600;

[0059] Step 2: The driving mechanism 200 drives the clamping mechanism 300 to rotate relative to the detection mechanism 400, and the camera 410 of the detection mechanism 400 photographs the surface of the bearing ring 600, thereby completing the sampling;

[0060] Step 3: Use the clamping driving member 340 of the clamping mechanism 300 to drive the plurality of clamping members 310 closer to each other so that the clamping members 310 and the bearing ring 600 are in a loose state; then, remove the bearing ring 600 from the clamping mechanism 300.

[0061] When the bearing ring 600 is inspected using the detection system of this embodiment, since the clamping mechanism 300 can clamp the bearing ring 600, all the clamping parts 310 move toward the bearing ring 600 with extremely high synchronization to complete stable clamping, the synchronous positioning clamping device of the present invention can be used for clamping and precise positioning of bearing rings 600 of different sizes, thereby improving the accuracy of the detection results of the bearing ring 600.

[0062] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A bearing ring detection device with synchronous positioning function, characterized in that: include, Mounting seat, A clamping mechanism, the clamping mechanism being rotatably connected to the mounting seat, the clamping mechanism comprising a clamping drive, a support plate, and a plurality of clamping members slidably disposed on the support plate, one end of the clamping member being disposed away from the support plate and forming a clamping claw, and the other end of the clamping member being connected to a rack; a moving end of the clamping drive is connected to a driving gear, the rack being in transmission connection with the driving gear, and the clamping drive is used to drive all the clamping members to synchronously move away from / approach each other to achieve clamping / releasing of the bearing ring; a driving mechanism, the driving mechanism being fixedly mounted on the mounting seat and configured to drive the clamping mechanism to rotate relative to the mounting seat; A detection mechanism, the detection mechanism is arranged on one side of the mounting seat, a camera of the detection mechanism is arranged toward the clamping mechanism, and the camera is used to photograph the surface of the bearing ring on the clamping mechanism; A sliding groove is provided on the support plate at a position corresponding to the clamping member, and one end of the clamping member connected to the rack is located below the support plate; the clamping drive member is located below the support plate; The clamping member includes a sliding seat, which is supported on the support plate; a clamping claw is provided on the upper side of the sliding seat, and a sliding rod is provided on the lower side of the sliding seat; the sliding rod passes through the sliding slot and is arranged toward the clamping drive member, and the rack is provided on the side of the sliding rod facing the secondary transmission gear; A slider is provided on the side of the sliding rod facing away from the secondary transmission gear, and a slide rail cooperating with the slider is provided on the lower side of the support plate; A bearing is provided on the support plate, and the moving end of the clamping drive member is rotatably connected to the support plate through the bearing.

2. A bearing ring detection device with synchronous positioning function according to claim 1, characterized in that: A transmission member is provided between the rack and the driving gear, and the transmission member includes a primary transmission gear and a secondary transmission gear provided on the primary transmission gear; the primary transmission gear is engaged with the driving gear, and the secondary transmission gear is engaged with the rack, and the primary transmission gear and the secondary transmission gear are concentrically arranged.

3. The bearing ring detection device with synchronous positioning function according to claim 2, characterized in that: The diameter of the primary transmission gear is greater than the radius of the secondary transmission gear.

4. The bearing ring detection device with synchronous positioning function according to claim 2, characterized in that: The number of the clamping members is more than four, and the more than four clamping members are arranged along the circumference of the driving gear, and the distances between adjacent clamping members are equal.

5. The bearing ring detection device with synchronous positioning function according to claim 1, characterized in that: The free end of the clamping claw is provided with a limiting portion with a step structure, and the edge of the bearing ring is placed on the limiting portion.

6. The bearing ring detection device with synchronous positioning function according to claim 5, characterized in that: The limiting portion is arranged on the outer side of the clamping claw, and the inner edge of the bearing ring is placed on the limiting portion.

7. A method for testing a bearing ring using the bearing ring testing device with synchronous positioning function according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Using a clamping drive member of the clamping mechanism to drive the plurality of clamping members away from each other, so that the plurality of clamping members clamp the bearing ring from the inner side of the bearing ring; Step 2: The driving mechanism drives the clamping mechanism to rotate relative to the detection mechanism, and the camera of the detection mechanism photographs the surface of the bearing ring to complete the sampling; Step 3: Use the clamping driving member of the clamping mechanism to drive several clamping members closer to each other so that the clamping members and the bearing ring are in a loose state; then, remove the bearing ring from the clamping mechanism.

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