Thickness measuring device

Abstract

The utility model relates to the field of thickness detection, and discloses a thickness measuring device, which has a first direction and a second direction which are intersected, and comprises a pressing piece and a driving assembly, the pressing piece is rotatably arranged on the driving assembly around a first rotating axis, the first rotating axis extends along the first direction, and the second rotating axis extends along the second direction. The driving assembly is used for driving the pressing piece to move along a second direction, so that the pressing piece is close to or far away from the to-be-detected object; and the first rotation driving device is arranged on the driving assembly, the output end of the first rotation driving device is in transmission connection with the pressing piece, and the first rotation driving device is used for driving the pressing piece to rotate around the first rotation axis. When the levelness error of the pressing piece is large, the pressing piece can be driven by the first rotation driving device to swing so as to adjust the levelness of the pressing piece, the pressing piece can be better attached to the object to be measured, the parallelism error between the pressing piece and the supporting face is reduced, and the thickness value of the object to be measured can be measured more accurately.

Description

Technical Field

[0001] This utility model relates to the field of thickness detection technology, and specifically to a thickness measuring device. Background Technology

[0002] Cell size is crucial for cell installation. Excessive dimensional deviation can lead to poor cell fit, increasing the risk of internal short circuits, external damage, and other safety hazards. Accurate cell size measurement allows for the timely detection and elimination of cells with dimensional abnormalities, improving battery safety and reliability.

[0003] Because the battery cell is soft, a certain pressure needs to be applied to it during the measurement process to obtain its true thickness. In related technologies, a driving assembly is used to drive a clamping component to press the battery cell, which is placed on a stage, flattening it. The distance between the clamping component and the stage is then measured to obtain the battery cell's thickness.

[0004] However, after a long period of testing, the level of the clamping parts may change due to wear or deformation of the drive components, which will greatly reduce the accuracy of the test thickness and require personnel to calibrate the level of the clamping parts. Utility Model Content

[0005] In view of this, the present invention provides a thickness measuring device to solve or improve the problem that the accuracy of thickness measurement is greatly reduced due to changes in the levelness of the clamping component.

[0006] In a first aspect, this utility model provides a thickness measuring device having intersecting first and second directions, comprising:

[0007] A clamping element and a driving assembly, wherein the clamping element is rotatably disposed on the driving assembly about a first rotation axis extending along a first direction, and the driving assembly is used to drive the clamping element to move along a second direction so that the clamping element approaches or moves away from the object to be tested;

[0008] A first rotation drive device is disposed on the drive assembly, and the output end of the first rotation drive device is connected to the clamping member in a transmission manner. The first rotation drive device is used to drive the clamping member to rotate around the first rotation axis.

[0009] In one alternative embodiment, the drive assembly includes a second rotation drive device and a transmission element;

[0010] Wherein, the output end of the second rotation drive device is connected to the transmission component, and the second rotation drive device is used to drive the transmission component to rotate around the second rotation axis, the second rotation axis being parallel to the first rotation axis;

[0011] The transmission component is equipped with the clamping component and the first rotation drive device.

[0012] In one optional embodiment, the thickness measuring device further includes a connecting seat;

[0013] The connecting seat is fitted onto the output end of the second rotation drive device, and the connecting seat is connected to the transmission component.

[0014] In one optional embodiment, the transmission member has a through hole at a position corresponding to the first rotation drive device, and the output end of the first rotation drive device passes through the through hole and is connected to the clamping member.

[0015] In one alternative embodiment, the second rotation drive device is a motor.

[0016] In one alternative implementation, the motor is a servo motor, and the servo motor integrates an encoder.

[0017] In one optional embodiment, the thickness measuring device further includes a torque detection device;

[0018] The torque detection device is disposed between the second rotation drive device and the transmission component, and the torque detection device is used to detect the torque value output by the second rotation drive device to the transmission component.

[0019] In one optional embodiment, the thickness measuring device further includes a first angle detection device;

[0020] The first angle detection device is used to detect the first angle value of the transmission component relative to the support surface of the object to be measured.

[0021] In one optional embodiment, the thickness measuring device further includes a second angle detection device for detecting a second angle value of the clamping member relative to the support surface where the object to be measured is located;

[0022] And / or, the thickness measuring device further includes a stage for supporting the object to be measured.

[0023] In one alternative embodiment, the clamping element includes a connecting plate and a pressure plate;

[0024] One end of the connecting plate is connected to the first rotation drive device, and the other end of the connecting plate is connected to the pressure plate. The surface of the pressure plate facing away from the connecting plate is used to press against the object to be tested.

[0025] The thickness measuring device provided by this utility model allows the object to be measured to be placed on a corresponding support surface when measurement is required. Then, a driving assembly drives a clamping component to approach the object and press it firmly against the support surface, allowing measurement to be performed. For example, the support surface can be a horizontal plane.

[0026] When the levelness error of the clamping part is large, the clamping part can be driven to swing by the first rotation drive device to adjust the levelness of the clamping part, so that the clamping part can better fit with the object to be measured, and reduce the parallelism error between the clamping part and the support surface, so that the gap between the clamping part and the support surface is uniform, so as to more accurately measure the thickness value of the object to be measured. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a front view of the thickness measuring device provided in the embodiment of this utility model;

[0029] Figure 2 This is an isometric view of the thickness measuring device provided in the embodiments of this utility model;

[0030] Figure 3 for Figure 2 Other angle schematic diagrams of the thickness measuring device shown;

[0031] Figure 4 This is a schematic diagram illustrating the principle of using a thickness measuring device to detect the thickness of an object in an embodiment of this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Clamping component; 101. Connecting plate; 102. Pressure plate; 2. First rotation drive device; 3. Drive assembly; 301. Second rotation drive device; 302. Transmission component; 3021. Through hole; 303. Connecting seat; 4. Stage; 401. Support surface; 5. Object to be tested; 6. Fixing seat; A. First rotation axis; B. Second rotation axis; X. First direction; Y. Second direction. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] Because the battery cell is soft, a certain pressure needs to be applied to it during the measurement process to obtain its true thickness. In related technologies, a driving assembly is used to drive a clamping component to press the battery cell, which is placed on a stage, flattening it. The distance between the clamping component and the stage is then measured to obtain the battery cell's thickness.

[0036] However, after a long period of testing, the level of the clamping parts may change due to wear or deformation of the drive components, which will greatly reduce the accuracy of the test thickness and require personnel to calibrate the level of the clamping parts.

[0037] In order to solve or improve the problem that changes in the levelness of the clamping parts lead to a significant reduction in the accuracy of thickness testing.

[0038] The following is combined with Figures 1 to 4 This describes the thickness measuring device provided in the embodiments of the present invention.

[0039] Specifically, the thickness measuring device has an intersecting first direction X and a second direction Y, for example, the first direction X and the second direction Y can be set perpendicularly.

[0040] The thickness measuring device includes a clamping element 1, a driving assembly 3, and a first rotation driving device 2.

[0041] The clamping member 1 is rotatably mounted on the driving assembly 3 about a first rotation axis A, which extends along a first direction X. The driving assembly 3 drives the clamping member 1 to move in a second direction Y, so that the clamping member 1 moves closer to or further away from the object to be tested 5. Optionally, the object to be tested 5 is a battery cell. It is understood that the object to be tested 5 is not limited to a battery cell. For example, the object to be tested 5 can also be any item that requires a certain clamping force to accurately measure its thickness.

[0042] The first rotation drive device 2 is mounted on the drive assembly 3, and the output end of the first rotation drive assembly 3 is connected to the clamping member 1 via a transmission connection. For example, the output end of the first rotation drive device 2 can be the output shaft of the first rotation drive device 2. The first rotation drive device 2 is used to drive the clamping member 1 to rotate around the first rotation axis A.

[0043] In this embodiment, when it is necessary to measure the object 5, the object 5 can be placed on the corresponding support surface 401, and then the clamping member 1 can be driven by the driving component 3 to move closer to the object 5 and press the object 5 onto the support surface 401, and then the object 5 can be measured. For example, the support surface 401 is a horizontal surface.

[0044] For example, the distance between the clamping part 1 and the support surface 401 can be measured using a dial indicator or other measuring tools. This distance value is the thickness value of the object to be measured 5. Of course, other measurement methods can also be used, which will be discussed below.

[0045] When the horizontal error of the clamping member 1 is large, the clamping member 1 can be driven to swing by the first rotation drive device 2 to adjust the horizontality of the clamping member 1, so that the clamping member 1 can better fit with the object to be measured 5 and reduce the parallelism error between the clamping member 1 and the support surface 401, so that the gap between the clamping member 1 and the support surface 401 is uniform, so as to more accurately measure the thickness value of the object to be measured 5.

[0046] refer to Figures 1-4 As shown, in some embodiments provided by this utility model, the drive assembly 3 includes a second rotation drive device 301 and a transmission component 302.

[0047] The output end of the second rotation drive device 301 is connected to the transmission member 302. For example, the output end of the second rotation drive device 301 can be the output shaft of the second rotation drive device 301. The second rotation drive device 301 is used to drive the transmission member 302 to rotate around the second rotation axis B, which is parallel to the first rotation axis A.

[0048] The transmission component 302 is equipped with a clamping member 1 and a first rotation drive device 2. It can be understood that the first rotation axis A of the clamping member 1 is parallel to the second rotation axis B of the transmission component 302. Therefore, there is a gap between the first rotation axis A of the clamping member 1 and the second rotation axis B of the transmission component 302, that is, the clamping member 1 is eccentrically arranged on the transmission component 302.

[0049] In this embodiment, reference is made to Figure 1 As shown, when it is necessary to measure the object to be measured 5, the object to be measured 5 can be placed on the corresponding support surface 401, and then the transmission component 302 is driven to swing by the second rotation drive device 301 so that the transmission component 302 drives the pressing component 1 to approach the object to be measured 5 and presses the object to be measured 5 onto the support surface 401, and then the object to be measured 5 can be measured.

[0050] Optionally, during the process of the transmission component 302 driving the clamping component 1 to approach the object to be measured 5, the first rotation drive device 2 can drive the clamping component 1 to rotate in order to adjust the level of the clamping component 1, so that the clamping component 1 can better fit with the object to be measured 5 and reduce the parallelism error between the clamping component 1 and the support surface 401, so that the gap between the clamping component 1 and the support surface 401 is uniform, so as to more accurately measure the thickness value of the object to be measured 5.

[0051] Optionally, as mentioned above, the distance between the clamping element 1 and the supporting surface 401 can be directly detected, and the distance value is the thickness value of the object to be measured 5. Of course, it is not limited to detecting the distance between the clamping element 1 and the supporting surface 401; for example, referring to… Figure 4 As shown, in other embodiments provided by this utility model, the thickness value of the object to be measured 5 can be calculated by detecting the first angle value of the transmission member 302 relative to the support surface 401. For example, the support surface 401 is a horizontal plane.

[0052] Specifically, assume the distance between the first rotation axis A and the second rotation axis B is L, the distance between the surface of the clamping member 1 that abuts against the object 5 and the first rotation axis A is P1, the distance between the support surface 401 and the second rotation axis B in the direction perpendicular to the support surface 401 is P3, the first angle of the transmission member 302 relative to the support surface 401 is Q1, and the thickness of the object 5 is P2. Where L, P1, and P3 are known constants, and Q1 can be obtained through measurement, therefore, based on L, P1, P3, and Q1, and based on the sine theorem of right-angle trigonometric functions:

[0053]

[0054] P2 can then be obtained.

[0055] Understandably, the first angle value of the transmission component 302 relative to the horizontal plane can be detected using a protractor. Of course, other methods can also be used for detection, which will be discussed below.

[0056] refer to Figure 3 As shown, in some embodiments provided by this utility model, the thickness measuring device further includes a connecting seat 303.

[0057] The connecting seat 303 is fitted onto the output end of the second rotation drive device 301. For example, the fixing seat 6 can be keyed, threaded, or connected to the output end of the second rotation drive device 301 via a set screw.

[0058] The connecting seat 303 is connected to the transmission component 302. For example, the connecting seat 303 and the transmission component 302 can be welded together or connected by threaded fasteners.

[0059] In this embodiment, using the connector 303 as an intermediary allows for more flexible connection between the transmission component 302 and the output end. When it is necessary to install or remove the transmission component 302, only the connection between the connector 303 and the transmission component 302 or between the connector 303 and the output end needs to be operated, without the need for large-scale disassembly of the entire system, thereby improving maintenance efficiency and convenience.

[0060] In addition, the design of the connector 303 can be diversified to adapt to different shapes, sizes and specifications of the transmission component 302 and the output end. This design makes the connection between the transmission component 302 and the output end more flexible and can be adapted to more types of equipment and application scenarios.

[0061] refer to Figure 2 As shown, in some embodiments provided by this utility model, the transmission component 302 is provided with a through hole 3021 at a position corresponding to the first rotation drive device 2, and the output end of the first rotation drive device 2 passes through the through hole 3021 and is connected to the clamping component 1.

[0062] In this embodiment, the clamping member 1 is directly connected to the output end of the first rotation drive device 2. The clamping member 1 and the transmission member 302 do not directly contact each other. Therefore, there will be no friction and wear between the clamping member 1 and the transmission member 302, which can extend the service life of the clamping member 1 and the transmission member 302.

[0063] Optionally, a bearing is provided between the output end of the first rotary drive device 2 and the through hole 3021. By supporting the output end with the bearing, the rigidity of the output end can be improved, the bending moment on the output end can be reduced, thereby reducing the probability of the first rotary drive device 2 being damaged by a large bending moment for a long time and extending the service life of the first rotary drive device 2.

[0064] Optionally, the clamping member 1 is connected to the output end of the first rotary drive device 2 by key, thread, or set screw.

[0065] In some embodiments provided by this utility model, the second rotation drive device 301 is a motor.

[0066] In this embodiment, by setting the second rotation drive device 301 as a motor, the speed of the motor can be precisely controlled so that the speed of the transmission component 302 driving the clamping component 1 is smoother, avoiding the clamping component 1 from impacting the test object 5 and causing the test object 5 to be flattened or damaged.

[0067] In addition, by setting the second rotation drive device 301 as a motor, the torque output by the motor can be precisely controlled so that the pressure provided by the clamping member 1 to the test object 5 is moderate, avoiding the problem of inaccurate measurement results caused by excessive pressure causing the test object 5 to be over-compressed or insufficient pressure causing the test object 5 to be under-compressed.

[0068] In some embodiments provided by this utility model, the motor is configured as a servo motor, and the servo motor integrates an encoder.

[0069] In this embodiment, by setting the second rotation drive device 301 as a servo motor, and the servo motor integrating an encoder, the rotation angle of the output end of the servo motor can be detected by the encoder. Based on the rotation angle of the output end, the first angle value Q1 of the transmission member 302 relative to the support surface 401 can be calculated.

[0070] It is understandable that the process of calculating the thickness value P2 of the object under test 5 based on the first angle value Q1 of the transmission component 302 can be completed by the inspection personnel. That is, the inspection personnel can calculate the thickness value P2 of the object under test 5 based on the angle of the servo motor and the calculation process described above. Of course, the above calculation process can also be completed by the processor.

[0071] Specifically, the thickness measuring device also includes a processor.

[0072] The processor is electrically connected to the second rotation drive device 301. Based on the rotation angle of the output end of the second rotation drive device 301, the processor can calculate the first angle value Q1 of the transmission component 302 relative to the support surface 401, and obtain the thickness value P2 of the object to be measured 5 based on the calculation process described above. It is understood that the processor is only used to replace manual mathematical calculations, so using the processor to calculate the thickness value P2 does not involve any improvement in the measurement method.

[0073] Furthermore, the thickness measuring device also includes a display device, which is electrically connected to the processor and is used to display the thickness value P2 of the object to be measured 5, so that the inspector can read the thickness value of the object to be measured 5.

[0074] In some embodiments provided by this utility model, reference is made to Figure 4 As shown, assuming the included angle between the transmission component 302 and the clamping component 1 is Q2, then according to the triangle angle relationship, we know that:

[0075] Q1 + Q2 + 90° = 180°

[0076] Q1 can be obtained by detecting the angle of the transmission component 302, or calculated based on the rotation angle fed back by the second rotation drive device 301, and then Q2 can be calculated based on the above formula.

[0077] In this embodiment, during the measurement process, Q2 is calculated based on Q1, and the clamping member 1 is driven to rotate by the first rotation drive device 2 based on Q2 to adjust the level of the clamping member 1, so that the clamping member 1 can always fit better with the object to be measured 5, and reduce the parallelism error between the clamping member 1 and the support surface 401, so that the gap between the clamping member 1 and the support surface 401 is uniform, so as to more accurately measure the thickness value of the object to be measured 5.

[0078] Optionally, the process of driving the clamping member 1 via the first rotation drive device 2 based on Q2 can be performed by an inspector, or it can be performed by a processor. Specifically, the first rotation drive device 2 is electrically connected to the processor. The processor calculates Q2 based on Q1 and drives the clamping member 1 to rotate via the first rotation drive device 2 based on Q2 to adjust the levelness of the clamping member 1, thereby improving the speed and accuracy of adjusting the clamping member 1.

[0079] In some embodiments provided by this utility model, reference is made to Figure 4 As shown, assuming the pressure provided by the clamping member 1 to the object under test 5 is F, and the torque output by the second rotation drive device 301 is T, based on the angle Q2 between the transmission member 302 and the clamping member 1 and the trigonometric function formula, the component force F1 of F perpendicular to the transmission member 302 can be calculated, and according to the knowledge of physics, T=F1×L.

[0080] In this embodiment, based on the current value of the second rotation drive device 301, the torque value T output by the second rotation drive device 301 can be calculated, where L is a known constant. F1 can be calculated using the above formula. Finally, based on F1 and trigonometric function formulas, the pressure F provided by the clamping member 1 to the test object 5 can be calculated. Based on the obtained F, the tester can record the magnitude of the pressure experienced by the test object 5 during the test and determine whether the pressure experienced by the test object 5 is within the set pressure range.

[0081] Optionally, the process of calculating the torque value T output by the second rotation drive device 301 based on the current value of the second rotation drive device 301, and calculating F1 according to the above formula, can be performed by an operator or by a processor. Furthermore, the processor is electrically connected to a display device, which displays the pressure F provided by the clamping member 1 to the object under test 5, so that the testing personnel can observe and record it.

[0082] Of course, the torque value output by the second rotation drive device 301 is not limited to the current value of the second rotation drive device 301. For example, in other embodiments provided by this utility model, the thickness measuring device also includes a torque detection device.

[0083] The torque detection device is located between the second rotation drive device 301 and the transmission component 302. The torque detection device is used to detect the torque value output by the second rotation drive device 301 to the transmission component 302.

[0084] In this embodiment, the torque value output by the second rotation drive device 301 to the transmission component 302 is directly detected by the torque detection device, which can reduce the torque value error and thus more accurately calculate the pressure F provided by the clamping component 1 to the object under test 5.

[0085] Furthermore, the torque detection device is electrically connected to the processor. For example, the processor calculates F1 based on the torque value T transmitted by the torque detection device.

[0086] Alternatively, the torque detection device may be a torque tester, torque meter, or torque gauge.

[0087] The above describes an embodiment of obtaining the first angle value of the transmission component 302 through an encoder integrated with a servo motor. It is understood that the embodiment is not limited to obtaining the first angle value of the transmission component 302 through an encoder. For example, in other embodiments provided by this utility model, the thickness measuring device also includes a first angle detection device.

[0088] The first angle detection device is used to detect the first angle value of the transmission component 302 relative to the support surface 401 where the object to be tested 5 is located. For example, the support surface 401 is a horizontal surface.

[0089] In this embodiment, the first angle value of the transmission component 302 relative to the support surface 401 can be directly obtained by the first angle detection device, that is, the first angle value Q1 of the transmission component 302.

[0090] Optionally, the first angle detection device is disposed on the transmission member 302, and the first angle detection device can be a tilt sensor or an angle sensor. Of course, the first angle detection device may also not be in contact with the transmission member 302; for example, the first angle detection device may be configured as an optical level sensor.

[0091] Optionally, the first angle detection device is electrically connected to the processor. For example, based on the first angle value Q1 transmitted by the first angle detection device, the processor can calculate the thickness value P2 of the object to be measured 5 and the included angle Q2 between the transmission member 302 and the clamping member 1, and control the first rotation drive device 2 to drive the clamping member 1 to rotate based on Q2, so as to adjust the levelness of the clamping member 1.

[0092] The above describes an embodiment in which the included angle between the transmission component 302 and the clamping component 1 is calculated as Q2 by the first angle value Q1 of the transmission component 302, and the level of the clamping component 1 is adjusted by the first rotation drive device 2 based on Q2. Of course, the adjustment of the level of the clamping component 1 is not limited to the above embodiment. For example, in other embodiments provided by this utility model, the thickness measuring device also includes a second angle detection device.

[0093] The second angle detection device is used to detect the second angle value of the clamping part 1 relative to the support surface 401 where the object to be tested 5 is located.

[0094] In this embodiment, the second angle detection device can directly obtain the second angle value of the clamping member 1 relative to the support surface 401, and adjust the levelness of the clamping member 1 by means of the first driving device based on the second angle value of the clamping member 1. By directly obtaining the second angle value, the second angle value of the clamping member 1 can be obtained more accurately, thereby improving the accuracy of the levelness of the clamping member 1.

[0095] For example, the second angle detection device is electrically connected to the processor. For example, the processor can control the first rotation drive device 2 to adjust the clamping member 1 based on the second angle value of the clamping member 1 transmitted by the second angle detection device.

[0096] Optionally, the second angle detection device is disposed on the clamping member 1. For example, the second angle detection device can be a tilt sensor or an angle sensor. Of course, the first angle detection device may also not be in contact with the clamping member 1. For example, the second angle detection device can be configured as an optical level sensor.

[0097] In some embodiments provided by this utility model, the thickness measuring device further includes a stage 4 for supporting the object to be measured 5. The stage 4 has a support surface 401 for supporting the object to be measured 5.

[0098] In this embodiment, the stage 4 can provide a flat, clean surface to prevent the object to be measured 5 from being scratched or otherwise physically damaged during the measurement process. The stage 4 can be designed with a surface that has high flatness and parallelism, thereby improving the accuracy and reliability of the measurement.

[0099] In some embodiments provided by this utility model, the clamping member 1 includes a connecting plate 101 and a pressure plate 102.

[0100] One end of the connecting plate 101 is connected to the first rotation drive device 2, and the other end of the connecting plate 101 is connected to the pressure plate 102. The pressure plate 102 is located away from the surface of the connecting plate 101 and is used to abut against the object to be tested 5.

[0101] In this embodiment, the connecting plate 101 serves as an intermediary, enabling the first rotation drive device 2 to be easily connected to the pressure plate 102, thus simplifying the installation process. The combination of the connecting plate 101 and the pressure plate 102 can be adjusted according to different shapes and sizes of the object to be measured 5, improving the versatility and flexibility of the thickness measuring device.

[0102] In some embodiments of this invention, the thickness measuring device further includes a fixing base 6. A second rotation drive device 301 is mounted on the fixing base 6. The fixing base 6 facilitates the fixation of the second rotation drive device 301.

[0103] Alternatively, the first rotation drive device 2 can also be a motor, such as a servo motor.

[0104] Optionally, the first rotary drive device 2 or the second rotary drive device 301 may also be configured as a pneumatic motor or a rotary cylinder.

[0105] Optionally, the drive assembly 3 can also be configured as a cylinder, hydraulic cylinder, or screw motor. That is, the drive assembly 3 is configured as a translation assembly, meaning that both the clamping member 1 and the first rotation drive device 2 are located on the drive end of the translation assembly.

[0106] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A thickness measuring device, characterized by, Having a first direction (X) and a second direction (Y) intersecting, comprising: a pressing member (1) and a driving assembly (3), the pressing member (1) being rotatably arranged on the driving assembly (3) around a first rotation axis (A) extending along the first direction (X), the driving assembly (3) being configured to drive the pressing member (1) to move along the second direction (Y) so as to approach or move away from an object (5) to be measured; a first rotation driving device (2) arranged on the driving assembly (3) and having an output end in transmission connection with the pressing member (1), the first rotation driving device (2) being configured to drive the pressing member (1) to rotate around the first rotation axis (A).

2. The thickness measuring device of claim 1, wherein The driving assembly (3) comprises a second rotation driving device (301) and a transmission member (302); wherein the output end of the second rotation driving device (301) is in transmission connection with the transmission member (302), and the second rotation driving device (301) is configured to drive the transmission member (302) to rotate around a second rotation axis (B) parallel to the first rotation axis (A). The transmission member (302) is mounted with the pressing member (1) and the first rotation driving device (2).

3. The thickness measuring device of claim 2, wherein, The thickness measuring device further comprises a connecting seat (303); The connecting seat (303) is sleeved on the output end of the second rotation driving device (301), and the connecting seat (303) is connected with the transmission member (302).

4. The thickness measuring device of claim 2, wherein The transmission member (302) is provided with a through hole (3021) at a position corresponding to the first rotation driving device (2), and the output end of the first rotation driving device (2) passes through the through hole (3021) and is connected with the pressing member (1).

5. The thickness measuring device of claim 2, wherein, The thickness measuring device further comprises a torque detection device; wherein the torque detection device is arranged between the second rotation driving device (301) and the transmission member (302), and the torque detection device is configured to detect a torque value output by the second rotation driving device (301) to the transmission member (302).

6. The thickness measuring device of claim 2, wherein The thickness measuring device further comprises a first angle detection device; wherein the first angle detection device is configured to detect a first angle value of the transmission member (302) relative to a support surface (401) on which the object (5) to be measured is arranged.

7. The thickness measuring device of claim 2, wherein The second rotation driving device (301) is an electric motor.

8. The thickness measuring device of claim 7, wherein, The electric motor is a servo motor, and the servo motor is integrated with an encoder.

9. The thickness measuring device according to any one of claims 1 to 8, characterized in that The thickness measuring device further comprises a second angle detection device configured to detect a second angle value of the pressing member (1) relative to the support surface (401) on which the object (5) to be measured is arranged. And / or, the thickness measuring device further comprises a carrier table (4) configured to support the object (5) to be measured.

10. The thickness measuring device according to any one of claims 1 to 8, characterized in that The pressing member (1) comprises a connecting plate (101) and a pressing plate (102). One end of the connecting plate (101) is connected with the first rotating driving device (2), the other end of the connecting plate (101) is connected with the pressing plate (102), and the surface of the pressing plate (102) away from the connecting plate (101) is used for abutting against the object (5) to be measured.

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