Bearing surface defect detection equipment

Abstract

The invention discloses a bearing surface defect detection device, and relates to the technical field of intelligent detection.The detection device is used for conducting defect detection on a bearing inner ring and comprises a supporting device, a driving device, an adjusting device, a transfer table and a conveyor, the conveyor is arranged on one side of the supporting device, and a mechanical arm is arranged between the supporting device and the conveyor; the driving device is connected with the supporting devices, the driving device is connected with the adjusting device, the adjusting device faces the inner ring of the bearing, a plurality of supporting devices are arranged, one side of each supporting device is provided with a transferring table, and the bearing is placed on the supporting devices, pushed to the corresponding position through the driving device and intelligently detected through the adjusting device. The qualified bearings are conveyed to the transfer table through the mechanical arm, the transfer table is of a self-propelled structure, replacement is convenient, and therefore continuous detection is conducted on the bearings.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent detection, and specifically, it is a bearing surface defect detection device. Background Art

[0002] A bearing is one of the important supporting structures in mechanical equipment, mainly used in moving structures, which determines the stability of the equipment operation. Therefore, during the production of bearings, the process of inspection and flaw detection is required.

[0003] However, during the production process of bearings, defects such as cracks and scratches may occur. Currently, the main detection work mainly relies on manual spot checks, which not only has insufficient detection efficiency but also is prone to missed detections, affecting the qualification rate of the entire batch. Therefore, some factories use vision detection equipment to detect bearing surface defects. Since a large amount of image processing is required during the detection process of vision detection equipment, ordinary processors cannot meet the requirements, which increases the detection cost to a certain extent.

[0004] In addition, since bearings need to meet the support requirements of moving parts and have relatively high requirements for surface roughness, conventional detection devices in the detection stations of production workshops are prone to external interference due to the harsh detection environment, and the accuracy of vision detection is not high, unable to meet the requirements of large-scale continuous production. Summary of the Invention

[0005] The purpose of the present invention is to provide a bearing surface defect detection device to solve the problems raised in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A bearing surface defect detection device, the detection device is used to detect defects in the inner ring of the bearing. The detection device includes a support device, a driving device, an adjusting device, a transfer table, and a conveyor. A conveyor is provided on one side of the support device, and a manipulator is provided between the support device and the conveyor. The driving device is connected to the support device, and the driving device is connected to the adjusting device. The adjusting device faces the inner ring of the bearing. There are several support devices, and a transfer table is provided on one side of each support device.

[0008] The support device serves as the main installation foundation for installing and fixing other devices. The bearing to be detected is conveyed to the detection station through the conveyor, and is automatically loaded through the manipulator and placed on the support device. It is pushed to the corresponding position through the driving device, and is intelligently detected through the adjusting device. The qualified bearings are then sent to the transfer table through the manipulator. The transfer table adopts a self-propelled structure, which is convenient for replacement, so as to continuously detect the bearings.

[0009] Further, the support device includes a casing, a detection cavity is provided on the casing, the driving device includes a displacement assembly, and the displacement assembly is in transmission connection with the adjustment device;

[0010] The adjustment device includes a sensing assembly and an adhering wall assembly. The adhering wall assembly includes a clamping sheet, and the clamping sheet is an elastic metal sheet. The sensing assembly includes a line light source, a bottom plate and electrodes. The line light source and the bottom plate are respectively fixedly connected to the clamping sheet. The line light source faces the inner wall of the bearing. A photosensitive layer is provided on the bottom plate. The reflection optical path of the line light source faces the photosensitive layer. Two electrodes are provided on the photosensitive layer. The two electrodes are respectively electrically connected to the two wiring terminals of the power supply to form a sorting circuit. A number of sorting circuits are provided along the axial direction of the bearing, and the number of sorting circuits are connected in parallel.

[0011] The casing provides a detection space through the detection cavity. The detection cavity adopts a semi-closed structure to reduce external light sources and improve detection accuracy. By setting the displacement assembly, the adjustment device is driven to move. The displacement assembly drives the adhering wall assembly to move vertically, and the adhering wall assembly drives the sensing assembly to move circumferentially along the inner ring of the bearing. The clamping sheet is fixed on the adhering wall assembly. The clamping sheet is an elastic metal sheet, such as a spring sheet, which deforms under force and automatically restores deformation when not under force. During detection, light rays are emitted from the line light source towards the inner wall of the bearing. After being irradiated on the smooth inner ring surface of the bearing, reflected light rays are generated. The reflected light rays are irradiated on the photosensitive layer and excite electron-hole pairs to participate in conduction. The two electrodes and the circuit where the power supply is located are turned on. When there are no obvious defects on the inner ring of the bearing, the current on the sorting circuit at this time is recorded as the rated current, and the current values of the parallel sorting circuits tend to be equal at this time; when scratches or bumps occur on the bearing surface, the reflection optical path changes greatly, resulting in a large difference in the current values of the sorting circuits, and the bearing is directly scrapped; when the local roughness of the inner ring of the bearing is large, when the light rays emitted by the line light source are irradiated on the inner ring of the bearing, the specular reflection changes to diffuse reflection, resulting in a decrease in the current of the sorting circuit in the original reflection path and an increase in the current values of the sorting circuits on both sides, and both are within a certain range of difference from the rated current, so as to automatically detect the surface defects of the bearing.

[0012] Further, the clamping sheet is arranged in an arc shape, and a number of photosensitive layers are sequentially provided on both sides of the photosensitive layer along the arc surface direction of the clamping sheet.

[0013] By arranging the clamping sheet in an arc shape, both ends are simultaneously abutted against the inner ring wall surface of the bearing. When detecting bearings of different specifications, it is convenient to adjust. Through double-end support, the detection accuracy is improved. Taking the circuit where the photosensitive layer located in the middle and arranged axially is the sorting circuit, and the circuits where the photosensitive layers are respectively arranged on both sides of the sorting circuit are the deviation detection circuits. When detecting bearings of different specifications, first abut both ends of the clamping sheet against the inner ring wall surface of the bearing, and by adjusting the deformation degree of the clamping sheet, the reflection optical path is irradiated on the sorting circuit, so as to perform automatic positioning and improve the positioning accuracy.

[0014] Furthermore, both ends of the pinch piece are arc-shaped.

[0015] By arranging the ends in an arc shape, when both ends of the pinch piece abut against the inner surface of the bearing, the smoothness of deformation is improved.

[0016] Furthermore, the displacement component includes a lifting cylinder, a displacement motor, and a loading table. The lifting cylinder is fixedly connected to the machine housing. A displacement motor is provided at the output end of the lifting cylinder. The output end of the displacement motor is fixedly connected to the loading table. The detection cavity is open upward. The loading table is drivingly connected to the pinch piece.

[0017] By arranging the lifting cylinder to drive the displacement motor to move, the displacement motor is used to drive the loading table to rotate. By driving the loading table to drive the pinch piece to move vertically, it is convenient to push the detected bearing to the downstream station.

[0018] Furthermore, the wall-attached component further includes an offset cylinder. The loading table is drivingly connected to the pinch piece through the offset cylinder. An offset groove is provided on the loading table. The offset cylinder is fixedly connected to the loading table. The output end of the offset cylinder is fixedly connected to the pinch piece. The pinch piece is slidably connected to the offset groove.

[0019] The offset cylinder is fixed by the loading table. When detecting bearings of different specifications, the offset cylinder outputs a displacement, driving the pinch piece to move along the offset groove and making both ends thereof abut against the inner wall surface of the bearing. The deviation detection circuit is electrically connected to the offset cylinder. When performing initial positioning, if the deviation detection circuit is turned on, it means that the reflected light path does not irradiate on the sorting circuit, driving the pinch piece to move towards or away from the inner ring of the bearing, so as to perform automatic positioning.

[0020] Furthermore, the driving device further includes a loading cylinder and a forward movement cylinder. The loading cylinder is fixedly connected to the machine housing. The detection cavity is open towards the side of the loading cylinder. The displacement direction of the output of the loading cylinder faces the side opening of the detection cavity. The forward movement cylinder is fixedly connected to the machine housing.

[0021] The bearing to be detected is placed at the output end of the loading cylinder by a manipulator. The loading cylinder outputs a displacement, pushing the bearing forward and into the detection cavity. First, the inner ring of the bearing is detected. After the detection is completed, the output end of the forward movement cylinder is inserted into the detection cavity, pushing the bearing forward, and then the next bearing is detected, which is convenient for continuous detection and improves the detection efficiency.

[0022] Furthermore, the support device further includes a waste machine. A blanking groove is provided on the machine housing. The blanking groove is communicated with the detection cavity. The driving device further includes a waste cylinder. The waste cylinder is fixedly connected to the detection cavity. The end of the feeding of the waste cylinder faces the blanking groove. The waste cylinder is electrically connected to the sorting circuit. The waste machine is located at the lower outlet of the blanking groove.

[0023] By setting up a waste bin and placing it at the end of the conveying stroke of the forward movement cylinder, when a defect appears in the inner ring of the bearing, a current difference is generated in the sorting circuit. Through electrical connection control, the waste bin is started, driving the unqualified bearing to move towards the blanking chute. The end of the blanking chute is connected to a waste machine, which can be a roller conveyor for transporting the unqualified bearings away, thus achieving automatic classification.

[0024] As an optimization, a guide groove is provided on one side of the detection cavity. The guide groove is arranged in an arc, and the end of the guide groove faces the outside of the detection cavity. The forward-moving bearing is automatically guided by the arc-shaped guide groove, so as to export the qualified bearing from the detection cavity and automatically grab it by a manipulator, and place it on the transfer table for automatic material collection.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: During detection, light rays are emitted from a line light source towards the inner wall of the bearing. When the light rays irradiate on the smooth inner ring surface of the bearing, reflected light rays are generated. The reflected light rays irradiate on the photosensitive layer and excite electron-hole pairs to participate in conduction, and the circuit where the two electrodes and the power supply are located is conducted. When there are no obvious defects in the inner ring of the bearing, the current in the sorting circuit at this time is recorded as the rated current, and the current values of the parallel sorting circuits tend to be equal at this time; when scratches or bumps appear on the bearing surface, the reflected light path changes greatly, resulting in a large difference in the current values of the sorting circuit, and this bearing is directly scrapped; when the local roughness of the inner ring of the bearing is relatively large, when the light rays emitted by the line light source irradiate on the inner ring of the bearing, the specular reflection changes to diffuse reflection, resulting in a decrease in the current of the sorting circuit in the original reflection path, an increase in the current values of the two-side sorting circuits, and both are within a certain range of difference from the rated current, so as to automatically detect the surface defects of the bearing; when detecting bearings of different specifications, first abut the two ends of the clamping piece against the inner ring wall surface of the bearing, and by adjusting the deformation degree of the clamping piece, the reflected light path is irradiated on the sorting circuit, so as to achieve automatic positioning and improve the positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall structural schematic diagram of the present invention;

[0027] Figure 2 is the structural schematic diagram of the machine housing of the present invention;

[0028] Figure 3 is the structural schematic diagram of the guide groove of the present invention;

[0029] Figure 4 is Figure 2 the enlarged view of the partial A of the view;

[0030] Figure 5 is the structural schematic diagram of the adjusting device of the present invention;

[0031] Figure 6Schematic diagram of the reflection optical path of the line light source of the present invention.

[0032] In the figure: 1, support device; 11, housing; 111, detection chamber; 112, blanking chute; 113, guide chute; 12, waste machine; 2, drive device; 21, displacement assembly; 211, lifting cylinder; 212, displacement motor; 213, loading table; 22, feeding cylinder; 23, forward movement cylinder; 24, waste cylinder; 3, adjustment device; 31, sensing assembly; 311, line light source; 312, bottom plate; 313, photosensitive layer; 314, electrode; 32, wall-attaching assembly; 321, clamping sheet; 322, offset cylinder; 4, transfer table; 5, manipulator; 6, conveyor; 7, bearing. Specific embodiments

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment: As Figures 1 - 6 shown, the present invention provides a technical solution for a bearing surface defect detection device.

[0035] A bearing surface defect detection device is used to detect defects in the inner ring of a bearing 7. The detection device includes a support device 1, a drive device 2, an adjustment device 3, a transfer table 4, and a conveyor 6. A conveyor 6 is provided on one side of the support device 1, and a manipulator 5 is provided between the support device 1 and the conveyor 6. The drive device 2 is connected to the support device 1, and the drive device 2 is connected to the adjustment device 3. The adjustment device 3 faces the inner ring of the bearing 7. There are several support devices 1, and a transfer table 4 is provided on one side of each support device 1.

[0036] The support device 1 serves as the main installation foundation for installing and fixing other devices. The bearing 7 to be detected is conveyed to the detection station through the conveyor 6, automatically loaded through the manipulator 5, placed on the support device 1, pushed to the corresponding position through the drive device 2, and intelligently detected through the adjustment device 3. The qualified bearing 7 is then sent onto the transfer table 4 through the manipulator 5. The transfer table 4 adopts a self-propelled structure, which is convenient for replacement, so as to continuously detect the bearing 7.

[0037] Furthermore, the support device 1 includes a housing 11, and a detection chamber 111 is provided on the housing 11. The drive device 2 includes a displacement assembly 21, and the displacement assembly 21 is in transmission connection with the adjustment device 3;

[0038] The adjusting device 3 includes a sensing component 31 and an adhering component 32. The adhering component 32 includes a clamping piece 321 which is an elastic metal sheet. The sensing component 31 includes a linear light source 311, a bottom plate 312 and electrodes 314. The linear light source 311 and the bottom plate 312 are respectively fixedly connected to the clamping piece 321. The linear light source 311 faces the inner wall of the bearing 7. A photosensitive layer 313 is provided on the bottom plate 312. The reflection optical path of the linear light source 311 faces the photosensitive layer 313. Two electrodes 314 are provided on the photosensitive layer 313. The two electrodes 314 are respectively electrically connected to the two wiring terminals of the power supply to form a sorting circuit. A plurality of sorting circuits are arranged along the axial direction of the bearing 7, and the plurality of sorting circuits are connected in parallel.

[0039] The machine shell 11 provides a detection space through the detection cavity 111. The detection cavity 111 adopts a semi-closed structure to reduce external light sources and improve detection accuracy. By setting the displacement component 21, the adjusting device 3 is driven to move. The displacement component 21 drives the adhering component 32 to move vertically, and the adhering component 32 drives the sensing component 31 to move circumferentially along the inner ring of the bearing 7. The clamping piece 321 is fixed on the adhering component 32. The clamping piece 321 is an elastic metal sheet, such as a spring piece, which deforms under force and automatically recovers its deformation when not under force. During detection, light is emitted from the linear light source 311 towards the inner wall of the bearing 7. When it shines on the smooth inner ring surface of the bearing 7, reflected light is generated. The reflected light shines on the photosensitive layer 313 and excites electron-hole pairs to participate in conduction. The circuit where the two electrodes 314 and the power supply are located is conducted. When there are no obvious defects on the inner ring of the bearing 7, the current on the sorting circuit at this time is recorded as the rated current, and the current values of the parallel sorting circuits tend to be equal at this time; when scratches or bumps occur on the bearing surface, the reflection optical path changes greatly, resulting in a large difference in the current values of the sorting circuits, and this bearing 7 is directly scrapped; when the local roughness of the inner ring of the bearing 7 is relatively large, when the light emitted by the linear light source 311 shines on the inner ring of the bearing 7, the specular reflection changes to diffuse reflection, causing the current of the sorting circuit in the original reflection path to decrease, and the current values of the sorting circuits on both sides increase, and both deviate from the rated current within a certain range, so as to automatically detect the surface defects of the bearing 7.

[0040] Further, the clamping piece 321 is arranged in an arc shape, and a plurality of photosensitive layers 313 are sequentially arranged on both sides of the photosensitive layer 313 along the arc surface direction of the clamping piece 321.

[0041] By arranging the clamping piece 321 in an arc shape, both ends are simultaneously abutted against the inner ring wall surface of the bearing 7. When detecting bearings of different specifications, it is convenient to adjust. Through double-end support, the detection accuracy is improved. Taking the circuit where the photosensitive layer 313 located in the middle and arranged along the axial direction as the sorting circuit, and the circuits where the photosensitive layer 313 are respectively arranged on both sides of the sorting circuit as the deviation detection circuits. When detecting bearings 7 of different specifications, first abut both ends of the clamping piece 321 against the inner ring wall surface of the bearing 7. By adjusting the deformation degree of the clamping piece 321, the reflected light path is irradiated on the sorting circuit, so as to perform automatic positioning and improve the positioning accuracy.

[0042] Further, both ends of the clamping piece 321 are arranged in an arc shape.

[0043] Through the arc-shaped arrangement at the ends, when both ends of the clamping piece 321 are abutted against the inner ring surface of the bearing 7, the smoothness of deformation is improved.

[0044] Further, the displacement component 21 includes a lifting cylinder 211, a displacement motor 212 and a loading platform 213. The lifting cylinder 211 is fixedly connected to the machine housing 11. A displacement motor 212 is provided at the output end of the lifting cylinder 211. The output end of the displacement motor 212 is fixedly connected to the loading platform 213. The detection cavity 111 is arranged with an upward opening. The loading platform 213 is drivingly connected to the clamping piece 321.

[0045] By setting the lifting cylinder 211 to drive the displacement motor 212 to move, the displacement motor 212 is used to drive the loading platform 213 to rotate. By driving the clamping piece 321 to move vertically through the loading platform 213, it is convenient to push the detected bearing 7 to the lower transfer station.

[0046] Further, the wall-attached component 32 further includes an offset cylinder 322. The loading platform 213 is drivingly connected to the clamping piece 321 through the offset cylinder 322. An offset groove is provided on the loading platform 213. The offset cylinder 322 is fixedly connected to the loading platform 213. The output end of the offset cylinder 322 is fixedly connected to the clamping piece 321. The clamping piece 321 is slidably connected to the offset groove.

[0047] By fixing the offset cylinder 322 on the loading platform 213, when detecting bearings 7 of different specifications, the offset cylinder 322 outputs displacement, drives the clamping piece 321 to move along the offset groove, and makes both ends thereof abut against the inner ring wall surface of the bearing 7. The deviation detection circuit is electrically connected to the offset cylinder 322. When performing initial positioning, if the deviation detection circuit is turned on, it means that the reflected light path is not irradiated on the sorting circuit, and the clamping piece 321 is driven to move towards or away from the inner ring of the bearing 7, so as to perform automatic positioning.

[0048] Further, the driving device 2 further includes a loading cylinder 22 and a forward moving cylinder 23. The loading cylinder 22 is fixedly connected to the machine housing 11. The detection cavity 111 is provided with an opening on the side facing the loading cylinder 22. The output displacement direction of the loading cylinder 22 faces the side opening of the detection cavity 111. The forward moving cylinder 23 is fixedly connected to the machine housing 11.

[0049] The bearing 7 to be detected is placed at the output end of the loading cylinder 22 by the manipulator 5. The loading cylinder 22 outputs displacement to push the bearing 7 forward and into the detection cavity 111. First, the inner ring of the bearing 7 is detected. After the detection is completed, the output end of the forward moving cylinder 23 is inserted into the detection cavity 111 to push the bearing 7 forward, and then the next bearing 7 is detected, which is convenient for continuous detection and improves the detection efficiency.

[0050] Further, the supporting device 1 further includes a waste machine 12. A blanking groove 112 is provided on the machine housing 11. The blanking groove 112 is communicated with the detection cavity 111. The driving device 2 further includes a waste cylinder 24. The waste cylinder 24 is fixedly connected to the detection cavity 111. The feeding end of the waste cylinder 24 faces the blanking groove 112. The waste cylinder 24 is electrically connected to the sorting circuit. The waste machine 12 is located at the lower end outlet of the blanking groove 112.

[0051] By providing the waste cylinder 24 and arranging it at the end of the conveying stroke of the forward moving cylinder 23, when a defect appears in the inner ring of the bearing 7, a current difference is generated in the sorting circuit. The waste cylinder 24 is controlled to start through electrical connection, driving the unqualified bearing 7 to move towards the blanking groove 112. The end of the blanking groove 112 is connected to the waste machine 12. The waste machine 12 can be a roller conveyor for conveying the unqualified bearing 7 away, so as to achieve automatic classification.

[0052] As an optimization, a guiding groove 113 is provided on one side of the detection cavity 111. The guiding groove 113 is arranged in an arc shape, and the tail end of the guiding groove 113 faces the outside of the detection cavity 111. The forward moving bearing 7 is automatically guided by the arc-shaped guiding groove 113, so as to export the qualified bearing 7 from the detection cavity 111 and automatically grab it by the manipulator 5 and place it on the transfer table 4 for automatic material collection.

[0053] Working principle of the present invention: During detection, light is emitted from the linear light source 311 towards the inner wall of the bearing 7. When it shines on the smooth inner ring surface of the bearing 7, reflected light is generated. The reflected light shines on the photosensitive layer 313 and excites electron-hole pairs to participate in conduction, and the circuit where the two electrodes 314 and the power source are located is turned on. When there are no obvious defects on the inner ring of the bearing 7, the current on the sorting circuit at this time is recorded as the rated current, and the current values of the parallel sorting circuits tend to be equal at this time; when scratches or bumps occur on the bearing surface, the reflected light path changes greatly, resulting in a large difference in the current values of the sorting circuits, and the bearing 7 is directly scrapped; when the local roughness of the inner ring of the bearing 7 is large, when the light emitted from the linear light source 311 shines on the inner ring of the bearing 7, specular reflection turns into diffuse reflection, reducing the current of the sorting circuit in the original reflection path and increasing the current values of the two-side sorting circuits, and both are within a certain range of difference from the rated current, so as to automatically detect the surface defects of the bearing 7; when detecting bearings 7 of different specifications, first abut both ends of the clamping piece 321 against the inner ring wall surface of the bearing 7, and by adjusting the deformation degree of the clamping piece 321, make the reflected light path shine on the sorting circuit, so as to perform automatic positioning and improve the positioning accuracy.

[0054] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A bearing surface defect detection device, which is used to detect defects in the inner ring of a bearing (7), and is characterized in that: The detection device includes a support device (1), a driving device (2), an adjusting device (3), a transfer table (4), and a conveyor (6). A conveyor (6) is provided on one side of the support device (1), and a manipulator (5) is provided between the support device (1) and the conveyor (6). The driving device (2) is connected to the support device (1), and the driving device (2) is connected to the adjusting device (3). The adjusting device (3) faces the inner ring of the bearing (7). There are several support devices (1), and a transfer table (4) is provided on one side of each support device (1).

2. The surface defect detection device for a bearing according to claim 1, characterized in that: The support device (1) includes a housing (11). A detection chamber (111) is provided on the housing (11). The driving device (2) includes a displacement assembly (21), and the displacement assembly (21) is in transmission connection with the adjusting device (3). The adjusting device (3) includes a sensing assembly (31) and an adhering wall assembly (32). The adhering wall assembly (32) includes a clamping sheet (321). The clamping sheet (321) is an elastic metal sheet. The sensing assembly (31) includes a linear light source (311), a bottom plate (312), and electrodes (314). The linear light source (311) and the bottom plate (312) are respectively fixedly connected to the clamping sheet (321). The linear light source (311) faces the inner wall of the bearing (7). A photosensitive layer (313) is provided on the bottom plate (312). The reflection optical path of the linear light source (311) faces the photosensitive layer (313). Two electrodes (314) are provided on the photosensitive layer (313). The two electrodes (314) are respectively electrically connected to two terminal blocks of the power supply to form a sorting circuit. A plurality of sorting circuits are provided along the axial direction of the bearing (7), and the plurality of sorting circuits are connected in parallel.

3. The surface defect detection device for a bearing according to claim 2, wherein: The clamping sheet (321) is arc-shaped, and a plurality of photosensitive layers (313) are sequentially provided on both sides of the photosensitive layer (313) along the arc surface direction of the clamping sheet (321).

4. The surface defect detection device for a bearing according to claim 3, wherein: Both ends of the clamping sheet (321) are arc-shaped.

5. The surface defect detection device for bearings according to claim 4, characterized in that: The displacement assembly (21) includes a lifting cylinder (211), a displacement motor (212), and a loading platform (213). The lifting cylinder (211) is fixedly connected to the housing (11). A displacement motor (212) is provided at the output end of the lifting cylinder (211). The output end of the displacement motor (212) is fixedly connected to the loading platform (213). The detection chamber (111) is provided with an upward opening. The loading platform (213) is in transmission connection with the clamping sheet (321).

6. The surface defect detection device for bearings according to claim 5, characterized in that: The adhering wall assembly (32) further includes an offset cylinder (322). The loading platform (213) is in transmission connection with the clamping sheet (321) through the offset cylinder (322). An offset groove is provided on the loading platform (213). The offset cylinder (322) is fixedly connected to the loading platform (213). The output end of the offset cylinder (322) is fixedly connected to the clamping sheet (321). The clamping sheet (321) is slidably connected to the offset groove.

7. An apparatus for detecting surface defects of a bearing according to claim 6, characterized in that: The driving device (2) further includes a loading cylinder (22) and a forward moving cylinder (23). The loading cylinder (22) is fixedly connected to the machine housing (11). The detection chamber (111) is provided with an opening on the side facing the loading cylinder (22). The output displacement direction of the loading cylinder (22) is towards the side opening of the detection chamber (111). The forward moving cylinder (23) is fixedly connected to the machine housing (11).

8. An apparatus for detecting surface defects of a bearing according to claim 7, characterized in that: The support device (1) further includes a waste machine (12). A blanking chute (112) is provided on the machine housing (11). The blanking chute (112) communicates with the detection chamber (111). The driving device (2) further includes a waste cylinder (24). The waste cylinder (24) is fixedly connected to the detection chamber (111). The feeding end of the waste cylinder (24) faces the blanking chute (112). The waste cylinder (24) is electrically connected to the sorting circuit. The waste machine (12) is located at the lower end outlet of the blanking chute (112).

9. The surface defect detection device for bearings according to claim 8, characterized in that: A guide groove (113) is provided on one side of the detection chamber (111). The guide groove (113) is arranged in an arc shape, and the tail end of the guide groove (113) faces the outside of the detection chamber (111).

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