Grinding disc detection device

Abstract

The utility model relates to the technical field of abrasive disc detection, and discloses an abrasive disc detection device which comprises a supporting table, a first linear sliding table, an L-shaped plate, a supporting plate, a first rotating shaft, a second rotating shaft, a motor, a driving bevel gear and a driven bevel gear. After the abrasive disc is arranged on the protrusion in a sleeving mode, the first linear sliding table is controlled to work, the L-shaped plate can be driven to move in the length direction of the supporting table, and then the second rotating shaft is driven to move towards the position where the first rotating shaft is located. And the abrasive disc can be clamped and fixed until the bulge is inserted into the groove and the shaft shoulder and the annular end face of the second rotating shaft abut against the two side faces of the abrasive disc correspondingly. And then the motor is controlled to work, and the second rotating shaft can be driven to rotate through the tooth meshing effect. Under the action of friction force and the support of the first rotating shaft, the abrasive disc can rotate along with the first rotating shaft, so that the abrasive disc is detected. Moreover, the first rotating shaft and the second rotating shaft do not need to be externally connected with cables, so that the winding phenomenon is avoided, and the normal work of the device is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of grinding disc detection, for example, to a grinding disc detection device. Background Art

[0002] The related art (Announcement No.: CN216977862U) discloses a calibration and detection device for a diamond grinding disc, including a base plate, vertical plates are fixed on both the left and right ends of the top of the base plate, and a frame is installed between the two sets of vertical plates through a support rod. A clamping assembly is installed on both the left and right ends of the inner cavity of the frame body, and the clamping assembly includes an electric push rod. The electric push rod is located on the left and right side walls of the inner cavity of the frame body and is connected to the inner wall of the frame body through a bearing, and a clamping plate is provided at the output end of the electric push rod. A driving assembly is installed on the right side wall of the frame body, and the driving assembly includes a driving motor. The driving motor is located at the upper end of the right side wall of the frame body, and a driving shaft is provided at the power output end of the driving motor. A driving gear is provided on the outer wall of the driving shaft, and a driven gear is meshed at the bottom of the driving gear. The inner cavity of the driven gear is sleeved with a driven shaft, and the left end of the driven shaft is connected to the right end electric push rod.

[0003] In the process of implementing the above embodiments, it is found that there are at least the following problems in the related art:

[0004] The diamond grinding disc calibration and detection device uses two electric push rods to drive two clamping plates to move toward each other, thereby clamping the grinding disc, and controls the drive motor to drive the two electric push rods to rotate, and finally drives the grinding disc to rotate to detect the grinding disc. However, when the two electric push rods rotate, the cables of the two electric push rods will be entangled, thereby affecting the normal use of the device.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The disclosed embodiment provides a grinding disc detection device to avoid cable entanglement.

[0008] In some embodiments, a grinding sheet detection device includes: a support table; a first linear slide, installed on the top surface of the support table along the length direction of the support table; an L-shaped plate, installed on the moving end of the first linear slide; a support plate, connected to the top surface of the support table, and the plane where the support plate is located is perpendicular to the top surface of the support table; a first rotating shaft, rotatably installed on the support plate along the length direction of the support table, the first rotating shaft includes a protrusion and a shoulder at its end, and the protrusion is used to support and install the grinding sheet; a second rotating shaft, rotatably installed on the L-shaped plate and coaxially distributed with the first rotating shaft, the second rotating shaft includes a groove at its end, and the groove matches the protrusion; a motor, installed on the L-shaped plate; a driving bevel gear, installed on the rotating end of the motor; a driven bevel gear, installed on the second rotating shaft, and meshing with the driving bevel gear; wherein, under the drive of the first linear slide, the protrusion is inserted into the interior of the groove, and the second rotating shaft and the shoulder clamp the grinding sheet.

[0009] Optionally, it also includes: a second linear slide, installed on the support plate along the height direction of the support platform; a C-shaped plate, installed on the movable end of the second linear slide; a spline shaft, slidably penetrated through the lower side wall of the C-shaped plate along the height direction of the support platform; a first fixed ring, installed on the spline shaft and located on the inner side of the C-shaped plate; a pressure sensor, located on the inner side of the C-shaped plate, one end of the pressure sensor is installed on the upper side wall of the C-shaped plate; a support tube, installed on the other end of the pressure sensor and coaxially distributed with the spline shaft; a second fixed ring, installed on the outer wall of the support tube; a spring, mounted on the spline shaft and the support tube, and located between the first fixed ring and the second fixed ring; a roller, rotatably installed on the end of the spline shaft and located on the outer side of the C-shaped plate; wherein, under the drive of the second linear slide, the roller abuts against the edge of the grinding wheel.

[0010] Optionally, it also includes: a spline sleeve, which can be slidably mounted on the spline shaft and installed on the lower side wall of the C-shaped plate.

[0011] Optionally, it also includes: a first bearing seat, installed on the support plate and sleeved on the first rotating shaft; and a first bearing, installed between the first rotating shaft and the first bearing seat.

[0012] Optionally, it also includes: a first elastic clamping ring, which is clamped on the first bearing seat and abuts against the first bearing.

[0013] Optionally, it also includes: a third fixing ring, which is installed on the first rotating shaft and abuts against the first bearing.

[0014] Optionally, it also includes: a second bearing seat, installed on the L-shaped plate and sleeved on the second rotating shaft; a second bearing, installed between the second bearing seat and the second rotating shaft.

[0015] Optionally, it also includes: a second elastic clamping ring, which is clamped on the second bearing seat and abuts against the second bearing.

[0016] Optionally, it also includes: a fourth fixing ring, which is installed on the second rotating shaft and abuts against the second bearing.

[0017] The present invention provides a grinding disc detection device which can achieve the following technical effects:

[0018] A grinding disc detection device provided by an embodiment of the present disclosure includes a support table, a first linear slide, an L-shaped plate, a support plate, a first rotating shaft, a second rotating shaft, a motor, an active bevel gear and a driven bevel gear. The support table is used to support the entire device. The first linear slide is installed on the top surface of the support table along the length direction of the support table to provide a driving force. The L-shaped plate is installed on the moving end of the first linear slide and moves along the length direction of the support table under the drive of the first linear slide. The support plate is connected to the top surface of the support table, and the plane where the support plate is located is perpendicular to the top surface of the support table. The first rotating shaft is rotatably installed on the support plate along the length direction of the support table and can rotate relative to the support plate. The first rotating shaft includes a protrusion and a shoulder at its end, the protrusion is used to support and install the grinding disc, and the shoulder is used to abut against one side of the grinding disc for limiting. The second rotating shaft is rotatably installed on the L-shaped plate and is coaxially distributed with the first rotating shaft, and can rotate relative to the L-shaped plate. The second rotating shaft includes a groove at its end, which matches the protrusion and is used to accommodate the protrusion. The annular end face of the second rotating shaft is used to abut against the other side of the grinding disc for limiting. The motor is installed on the L-shaped plate to provide driving force. The active bevel gear is installed on the rotating end of the motor and rotates under the drive of the motor. The driven bevel gear is installed on the second rotating shaft to drive the second rotating shaft to rotate. The driven bevel gear is meshed with the active bevel gear to jointly transmit the driving force and change the direction of the force. Among them, under the drive of the first linear slide, the protrusion is inserted into the interior of the groove, and the second rotating shaft and the shoulder clamp the grinding disc.

[0019] During use, after the grinding disc is sleeved on the protrusion, the first linear slide is controlled to work, which can drive the L-shaped plate to move along the length direction of the support platform, and then drive the second rotating shaft to move to the position of the first rotating shaft. Until the protrusion is inserted into the inside of the groove, and the shaft shoulder and the annular end face of the second rotating shaft are respectively against the two side faces of the grinding disc, the grinding disc can be clamped and fixed. Then the motor is controlled to work, which can drive the active bevel gear to rotate. Through the meshing action between the teeth, the driven bevel gear can be driven to rotate, and then the second rotating shaft can be driven to rotate. Under the action of friction and the support of the first rotating shaft, the grinding disc can rotate accordingly, so as to detect the grinding disc. In addition, since the first rotating shaft and the second rotating shaft do not need external cables, entanglement will not occur, thereby ensuring the normal operation of the device.

[0020] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily described by corresponding drawings, and these exemplary descriptions and drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are considered similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0022] Figure 1 is a schematic cross-sectional structural diagram of a grinding disc detection device provided by an embodiment of the present disclosure;

[0023] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 3 yes Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0025] Figure 4 yes Figure 1 Schematic diagram of the enlarged structure at C in the middle;

[0026] Figure 5 It is a schematic diagram of the main structure of a grinding disc detection device provided in an embodiment of the present disclosure.

[0027] Reference numerals:

[0028] 1: support table; 2: first linear slide; 3: L-shaped plate; 4: support plate; 5: first rotating shaft; 6: second rotating shaft; 7: motor; 8: second linear slide; 9: C-shaped plate; 10: spline shaft; 11: first fixing ring; 12: pressure sensor; 13: support cylinder; 14: second fixing ring; 15: spring; 16: roller; 17: first bearing seat; 18: first bearing; 19: second bearing seat; 20: second bearing. DETAILED DESCRIPTION

[0029] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0030] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0031] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0032] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0033] Unless otherwise stated, the term "plurality" means two or more.

[0034] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0035] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0037] Combination Figures 1 to 5 As shown, the embodiment of the present disclosure provides a grinding disc detection device, including a support table 1, a first linear slide 2, an L-shaped plate 3, a support plate 4, a first rotating shaft 5, a second rotating shaft 6, a motor 7, an active bevel gear and a driven bevel gear. The support table 1 is used to support the entire device. The first linear slide 2 is installed on the top surface of the support table 1 along the length direction of the support table 1 to provide a driving force. The L-shaped plate 3 is installed at the moving end of the first linear slide 2, and moves along the length direction of the support table 1 under the drive of the first linear slide 2. The support plate 4 is connected to the top surface of the support table 1, and the plane where the support plate 4 is located is perpendicular to the top surface of the support table 1. The first rotating shaft 5 is rotatably installed on the support plate 4 along the length direction of the support table 1, and can rotate relative to the support plate 4. The first rotating shaft 5 includes a protrusion and a shoulder at its end, the protrusion is used to support and install the grinding disc, and the shoulder is used to abut against one side of the grinding disc for limiting. The second rotating shaft 6 is rotatably mounted on the L-shaped plate 3 and is coaxially distributed with the first rotating shaft 5, and can rotate relative to the L-shaped plate 3. The second rotating shaft 6 includes a groove at its end, which matches the protrusion and is used to accommodate the protrusion. The annular end face of the second rotating shaft 6 is used to abut against the other side of the grinding plate for limiting. The motor 7 is mounted on the L-shaped plate 3 to provide driving force. The active bevel gear is mounted on the rotating end of the motor 7 and rotates under the drive of the motor 7. The driven bevel gear is mounted on the second rotating shaft 6 to drive the second rotating shaft 6 to rotate. The driven bevel gear is meshed with the active bevel gear to jointly transmit the driving force and change the direction of the force. Among them, under the drive of the first linear slide 2, the protrusion is inserted into the interior of the groove, and the second rotating shaft 6 clamps the grinding plate with the shoulder.

[0038] The embodiment of the present disclosure provides a grinding disc detection device. After the grinding disc is sleeved on the protrusion, the first linear slide 2 is controlled to work, which can drive the L-shaped plate 3 to move along the length direction of the support platform 1, and then drive the second rotating shaft 6 to move to the position of the first rotating shaft 5. Until the protrusion is inserted into the inside of the groove, and the shaft shoulder and the annular end surface of the second rotating shaft 6 are respectively against the two side surfaces of the grinding disc, the grinding disc can be clamped and fixed. Then the motor 7 is controlled to work, which can drive the active bevel gear to rotate. Through the meshing action between the teeth, the driven bevel gear can be driven to rotate, and then the second rotating shaft 6 can be driven to rotate. Under the action of friction and the support of the first rotating shaft 5, the grinding disc can rotate accordingly, so as to detect the grinding disc. In addition, since the first rotating shaft 5 and the second rotating shaft 6 do not need to be connected to external cables, entanglement will not occur, thereby ensuring the normal operation of the device.

[0039] Optionally, combined Figure 1 , Figure 2 and Figure 5 As shown, it also includes a second linear slide 8, a C-type plate 9, a spline shaft 10, a first fixed ring 11, a pressure sensor 12, a support tube 13, a second fixed ring 14, a spring 15 and a roller 16. The second linear slide 8 is installed on the support plate 4 along the height direction of the support platform 1 to provide a driving force. The C-type plate 9 is installed on the moving end of the second linear slide 8, and moves along the height direction of the support platform 1 under the drive of the second linear slide 8. The spline shaft 10 is slidably arranged on the lower side wall of the C-type plate 9 along the height direction of the support platform 1, and can slide relative to the lower side wall of the C-type plate 9. The first fixed ring 11 is installed on the spline shaft 10 and is located on the inner side of the C-type plate 9, which is used to play a limiting role. The pressure sensor 12 is located on the inner side of the C-type plate 9, and one end of the pressure sensor 12 is installed on the upper side wall of the C-type plate 9 for pressure detection. The support tube 13 is installed on the other end of the pressure sensor 12 and is coaxially distributed with the spline shaft 10, which is used to support and install the second fixed ring 14. The second fixing ring 14 is mounted on the outer wall of the support tube 13 and is also used to limit the position. The spring 15 is sleeved on the spline shaft 10 and the support tube 13, and is located between the first fixing ring 11 and the second fixing ring 14, and is used to deform. The roller 16 is rotatably mounted on the end of the spline shaft 10 and is located on the outside of the C-shaped plate 9 to reduce the friction. Among them, under the drive of the second linear slide 8, the roller 16 is against the edge of the grinding plate.

[0040] In the disclosed embodiment, the second linear slide 8 is controlled to work, so as to drive the C-type plate 9 to move toward the position of the grinding disc. Then, the spline shaft 10 is moved toward the position of the grinding disc until the roller 16 abuts against the edge of the grinding disc. When the grinding disc rotates, under the elastic force of the spring 15, the roller 16 will always fit the edge of the grinding disc. As the contour of the grinding disc changes, the spline shaft 10 can slide relative to the lower side wall of the C-type plate 9, thereby changing the deformation of the spring 15. When the deformation of the spring 15 changes, different elastic forces can be generated, thereby changing the detection value of the pressure sensor 12. Therefore, according to the change of the detection value, the roundness of the grinding disc can be judged, thereby completing the detection work.

[0041] Optionally, combined Figure 1 , Figure 2 and Figure 5 As shown, the spline sleeve is also included. The spline sleeve can be slidably mounted on the spline shaft 10 and installed on the lower side wall of the C-shaped plate 9.

[0042] In the disclosed embodiment, a spline sleeve is also included which is slidably mounted on the spline shaft 10 and installed on the lower side wall of the C-shaped plate 9. The spline sleeve is used to reduce the friction between the spline shaft 10 and the lower side wall of the C-shaped plate 9 and improve the precision of the spline shaft 10 when sliding relative to the lower side wall of the C-shaped plate 9.

[0043] Optionally, combined Figure 1 and Figure 3 As shown, the first bearing seat 17 and the first bearing 18 are also included. The first bearing seat 17 is installed on the support plate 4 and sleeved on the first rotating shaft 5. The first bearing 18 is installed between the first rotating shaft 5 and the first bearing seat 17.

[0044] In the disclosed embodiment, a first bearing seat 17 and a first bearing 18 are also included. The first bearing seat 17 is used to support and install the first bearing 18 and to limit the first bearing 18. The first bearing 18 is used to support and install the rotatable first rotating shaft 5, to withstand the axial force and radial force on the first rotating shaft 5, to reduce the friction force on the first rotating shaft 5, and to improve the rotation accuracy of the first rotating shaft 5.

[0045] Optionally, combined Figure 1 and Figure 3 As shown, the first elastic collar is also included. The first elastic collar is clamped on the first bearing seat 17 and abuts against the first bearing 18.

[0046] In the disclosed embodiment, a first elastic collar is further included which is clamped on the first bearing seat 17 and abuts against the first bearing 18. The first elastic collar is used to axially limit the first bearing 18 to determine the relative position of the first bearing 18 and the first bearing seat 17.

[0047] Optionally, combined Figure 1 and Figure 3 As shown, the third fixing ring is also included. The third fixing ring is installed on the first rotating shaft 5 and abuts against the first bearing 18.

[0048] In the disclosed embodiment, a third fixing ring is further included which is mounted on the first rotating shaft 5 and abuts against the first bearing 18. The third fixing ring is used to axially fix the first rotating shaft 5 to determine the relative position of the first rotating shaft 5 and the first bearing 18.

[0049] Optionally, combined Figure 1 and Figure 4 As shown, the second bearing seat 19 and the second bearing 20 are also included. The second bearing seat 19 is installed on the L-shaped plate 3 and sleeved on the second rotating shaft 6. The second bearing 20 is installed between the second bearing seat 19 and the second rotating shaft 6.

[0050] In the disclosed embodiment, a second bearing seat 19 and a second bearing 20 are also included. The second bearing seat 19 is used to support and install the second bearing 20 and to limit the second bearing 20. The second bearing 20 is used to support and install the rotatable second rotating shaft 6, bear the axial force and radial force on the second rotating shaft 6, reduce the friction force on the second rotating shaft 6, and improve the rotation accuracy of the second rotating shaft 6.

[0051] Optionally, combined Figure 1 and Figure 4 As shown, the second elastic collar is also included. The second elastic collar is clamped on the second bearing seat 19 and abuts against the second bearing 20.

[0052] In the disclosed embodiment, a second elastic collar is also included which is clamped on the second bearing seat 19 and abuts against the second bearing 20. The second elastic collar is used to axially limit the second bearing 20 to determine the relative position of the second bearing 20 and the second bearing seat 19.

[0053] Optionally, combined Figure 1 and Figure 4 As shown, the fourth fixing ring is also included. The fourth fixing ring is installed on the second rotating shaft 6 and abuts against the second bearing 20.

[0054] In the embodiment of the present disclosure, a fourth fixing ring is further included which is mounted on the second rotating shaft 6 and abuts against the second bearing 20. The fourth fixing ring is used to axially fix the second rotating shaft 6 to determine the relative position of the second rotating shaft 6 and the second bearing 20.

[0055] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A grinding disc detection device, characterized in that: include: Support table; A first linear slide is installed on the top surface of the support platform along the length direction of the support platform; An L-shaped plate mounted on the moving end of the first linear slide; A support plate connected to the top surface of the support platform, wherein the plane where the support plate is located is perpendicular to the top surface of the support platform; A first rotating shaft is rotatably mounted on the supporting plate along the length direction of the supporting platform, wherein the first rotating shaft comprises a protrusion and a shoulder at an end thereof, wherein the protrusion is used to support and install the grinding disc; A second rotating shaft is rotatably mounted on the L-shaped plate and is coaxially distributed with the first rotating shaft, wherein the second rotating shaft includes a groove at an end thereof, and the groove matches the protrusion; A motor, mounted on the L-shaped plate; A driving bevel gear, mounted on the rotating end of the motor; A driven bevel gear is mounted on the second rotating shaft and meshes with the driving bevel gear; Wherein, under the drive of the first linear slide, the protrusion is inserted into the interior of the groove, and the second rotating shaft and the shoulder clamp the grinding disc.

2. A grinding disc detection device according to claim 1, characterized in that: Also includes: A second linear slide is installed on the support plate along the height direction of the support platform; A C-shaped plate mounted on the moving end of the second linear slide; A spline shaft is slidably disposed on the lower side wall of the C-shaped plate along the height direction of the support platform; A first fixing ring, mounted on the spline shaft and located on the inner side of the C-shaped plate; A pressure sensor is located on the inner side of the C-shaped plate, and one end of the pressure sensor is mounted on the upper side wall of the C-shaped plate; A support cylinder is installed at the other end of the pressure sensor and is coaxially distributed with the spline shaft; A second fixing ring is mounted on the outer wall of the support tube; A spring, which is sleeved on the spline shaft and the support cylinder and is located between the first fixing ring and the second fixing ring; A roller, rotatably mounted on the end of the spline shaft and located outside the C-shaped plate; Wherein, under the drive of the second linear slide, the roller abuts against the edge of the grinding plate.

3. A grinding disc detection device according to claim 2, characterized in that: Also includes: The spline sleeve is slidably mounted on the spline shaft and is installed on the lower side wall of the C-shaped plate.

4. A grinding disc detection device according to claim 1, characterized in that: Also includes: A first bearing seat is mounted on the support plate and sleeved on the first rotating shaft; The first bearing is installed between the first rotating shaft and the first bearing seat.

5. A grinding disc detection device according to claim 4, characterized in that: Also includes: The first elastic clamping ring is clamped on the first bearing seat and abuts against the first bearing.

6. A grinding disc detection device according to claim 4, characterized in that: Also includes: The third fixing ring is installed on the first rotating shaft and abuts against the first bearing.

7. A grinding disc detection device according to any one of claims 1 to 6, characterized in that: Also includes: A second bearing seat is mounted on the L-shaped plate and sleeved on the second rotating shaft; The second bearing is installed between the second bearing seat and the second rotating shaft.

8. A grinding disc detection device according to claim 7, characterized in that: Also includes: The second elastic clamping ring is clamped on the second bearing seat and abuts against the second bearing.

9. The grinding disc detection device according to claim 7, characterized in that: Also includes: A fourth fixing ring is installed on the second rotating shaft and abuts against the second bearing.

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