Tool for measuring bending moment of crossed roller bearing

Abstract

The invention provides a tool for measuring the bending moment of a crossed roller bearing, and the tool comprises a pedestal which is provided with an equipment groove and a placement groove, and the crossed roller bearing is disposed in the placement groove. The air pump is installed in the equipment groove, and the air outlet end of the air pump is connected with an air outlet pipe; the motor is mounted in the placement groove, and a rotating plate is mounted at the output end of the motor; the first clamping mechanism is installed on the rotating plate in the circumferential direction, and the first clamping mechanism is connected with the air outlet pipe and used for clamping the inner ring of the crossed roller bearing under the action of the air pump; and the second clamping mechanism is installed on the inner wall of the equipment groove in the circumferential direction, connected with the air outlet pipe and used for clamping the outer ring of the crossed roller bearing under the action of the air pump. Through the arrangement of the first clamping mechanism and the second clamping mechanism, clamping switching of the inner ring and the outer ring of the bearing can be achieved, operation is easy, clamping is stable, and it is guaranteed that the bearing is fixed subsequently, and meanwhile bending moment detection of the outer ring or the inner ring is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of tooling for crossed roller bearings, and in particular to a tooling for measuring the bending moment of a crossed roller bearing. Background Art

[0002] In modern industrial production, crossed roller bearings, as a key component, are widely used in many fields such as aerospace, precision machine tools, and robotics. The quality of their performance directly affects the operating accuracy, stability, and reliability of related equipment. Bending moment is one of the important indicators for measuring the performance of crossed roller bearings. Accurately measuring the bending moment of crossed roller bearings is crucial to ensuring their normal operation under various working conditions.

[0003] Currently, traditional methods and tooling for measuring bending moments in crossed roller bearings present numerous problems. For one thing, existing tooling typically secures the bearing directly in a tooling slot that matches the bearing size and secures it with a flange and bolts. This is cumbersome and time-consuming, significantly impacting detection efficiency. Furthermore, prior to testing, impurities such as dust and debris may adhere to the surface of the crossed roller bearing. Traditional tooling typically lacks the ability to clean the bearings, and these impurities can interfere with the testing process and reduce accuracy.

[0004] Patent publication number CN118603552B discloses a cross-roller bearing stiffness test device, belonging to the field of testing equipment technology. The device comprises a support assembly, a fixture assembly, and a loading system. A drive assembly and a lifting assembly are mounted within the support assembly. A connecting assembly is rotatably connected to the lifting assembly, and the connecting assembly is slidably connected to the drive assembly. Two sets of stopper assemblies are mounted on the support assembly. The bearing outer ring is supported on the stopper assemblies. Stopper screws sliding on the stopper assemblies pass through waist-shaped holes in the stopper assemblies and fit into mounting holes in the bearing outer ring, securing the outer ring. This invention assesses the bearing's deformation resistance under axial load by testing the axial stiffness of the cross-roller bearing. It also measures the radial stiffness of the cross-roller bearing at different speeds by applying different rotational speeds to the bearing, thereby evaluating the bearing's performance under dynamic conditions and its stability and reliability under different operating conditions. However, this solution involves directly mounting the bearing in a fixture slot and securing it with fasteners such as flanges, making the operation cumbersome and inefficient. Summary of the Invention

[0005] In view of the defects in the prior art, an object of the present invention is to provide a tool for measuring the bending moment of a crossed roller bearing.

[0006] The tool for measuring the bending moment of a crossed roller bearing provided by the present invention comprises:

[0007] A base, wherein the base is provided with an equipment slot and a placement slot, and the cross roller bearing is installed in the placement slot;

[0008] An air pump is installed in the equipment tank, and an air outlet pipe is connected to the air outlet end of the air pump;

[0009] A motor is installed in the placement slot, and a rotating plate is installed on the output end of the motor;

[0010] a first clamping mechanism, circumferentially mounted on the rotating plate and located inside the inner ring of the cross roller bearing, the first clamping mechanism being connected to the air outlet pipe and configured to abut against the inner ring of the cross roller bearing under the action of the air pump, thereby clamping the inner ring of the cross roller bearing;

[0011] The second clamping mechanism is circumferentially installed on the inner wall of the equipment groove and is located outside the outer ring of the cross roller bearing. The second clamping mechanism is connected to the air outlet pipe and is used to abut against the outer ring of the cross roller bearing under the action of the air pump, thereby clamping the outer ring of the cross roller bearing.

[0012] Preferably, the first clamping mechanism comprises a first clamping piston cylinder, a clamping plate, a laser sensor, an abutment plate and a first rotary connector, and the first rotary connector is mounted on the output end of the motor;

[0013] The first clamping piston cylinder is mounted on a rotating plate, and an air inlet end of the first clamping piston cylinder is connected to an air outlet pipe in sequence through a first rotating connector and a first clamping connecting pipe, and the bottom end of the clamping plate is mounted on a telescopic end of the first clamping piston cylinder;

[0014] A butt plate is installed on the outer side of the top of the clamping plate, and the butt plate is used to abut against the inner ring of the cross roller bearing. A laser sensor is installed on the top of the clamping plate, and the laser sensor is used to detect the upper edge position of the cross roller bearing.

[0015] Preferably, the second clamping mechanism comprises a second clamping piston cylinder and a clamping block, and the second clamping piston cylinder is installed on the inner wall of the placement groove;

[0016] The air inlet end of the second clamping piston cylinder is connected to the air outlet pipe through a second clamping connecting pipe. The clamping block is installed on the telescopic end of the second clamping piston cylinder and is used to abut against the outer ring of the cross roller bearing.

[0017] Preferably, it further comprises a lifting mechanism, the lifting mechanism comprising a rotating ring, an inflatable airbag and a lifting block, the rotating ring being rotatably mounted in the placement groove and being located at the bottom of the cross roller bearing;

[0018] There are multiple inflatable airbags, which are circumferentially installed on the rotating ring. The air inlet end of the inflatable airbag is connected to the air outlet pipe through the airbag connecting pipe. The top block is set on the top of the inflatable airbag. When the inflatable airbag is inflated, the top block is driven to rise and resist the bottom of the cross roller shaft.

[0019] Preferably, it further comprises a plurality of knocking mechanisms arranged along the circumferential direction, wherein the knocking mechanism comprises a knocking piston cylinder, a spring member and a knocking block, and the knocking piston cylinder is mounted on the inner wall of the placement groove;

[0020] The air inlet end of the knocking piston cylinder is connected to the air outlet pipe through a knocking connecting pipe. A groove is provided on the telescopic end of the knocking piston cylinder. The spring member is installed in the groove. The knocking block is installed at the end of the spring member and is slidably arranged in the groove.

[0021] When the telescopic end of the knocking piston cylinder is extended, the knocking block is driven to move toward the first clamping mechanism, thereby colliding with the rotating first clamping mechanism and generating vibration.

[0022] Preferably, the clamping block is provided with a plurality of first air outlet holes, the second clamping connecting pipe is connected to a first auxiliary pipe, and the first auxiliary pipe is connected to the first air outlet holes.

[0023] Preferably, a plurality of groups of second air outlet holes are provided on the top of the top block, a second auxiliary pipe is connected to the airbag connecting pipe, and the second air outlet holes are connected to the second auxiliary pipe.

[0024] Preferably, the bottom of the rotating ring is connected to a second rotating connector, and the inflatable airbag is connected to the airbag connecting tube via the second rotating connector;

[0025] The second air outlet holes are arranged obliquely, and air is blown through the inclined second air outlet holes simultaneously to rotate the rotating ring.

[0026] Preferably, the inner side surface of the clamping block is provided with anti-slip grooves.

[0027] Preferably, a filter tank is fixedly installed in the equipment tank, and the filter tank is connected to the air inlet end of the air pump.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention can realize the switching of the clamping of the inner and outer rings of the bearing by setting the first clamping mechanism and the second clamping mechanism. The operation is simple and the clamping is stable. While ensuring the subsequent fixation of the bearing, it is convenient to detect the bending moment of the outer ring or the inner ring.

[0030] 2. The present invention can monitor the position of the bearing in real time by installing a laser sensor on the top of the clamping plate, ensuring that the bearing is in a horizontal state, thereby providing a guarantee for subsequent accurate measurement.

[0031] 3. The present invention can clean the bearing to a certain extent by providing the first air outlet and the second air outlet, which is convenient for subsequent inspection.

[0032] 4. Through the setting of the airbag and the top block, the present invention can quickly adjust the bearing to a horizontal state when it is not initially horizontal. According to different working conditions, the horizontal bearing can be flexibly switched to an inclined state, thereby meeting a variety of bending moment detection scenarios and significantly broadening the scope of application of the detection.

[0033] 5. The present invention can continuously emit regular vibrations through the setting of knocking the piston cylinder, accurately simulating the operating status of the bearing in a real vibration environment, providing strong support for comprehensive and integrated testing, ensuring that the test results are more in line with actual applications, and effectively improving the reliability and practicality of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0035] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first angle;

[0036] Figure 2 A schematic diagram of the three-dimensional structure of the present invention from a second angle;

[0037] Figure 3 This is a first cross-sectional structural schematic diagram of the present invention;

[0038] Figure 4 for Figure 3 A partial enlarged schematic diagram of part A;

[0039] Figure 5 for Figure 3 A partial enlarged schematic diagram of part B;

[0040] Figure 6 It is a second cross-sectional structural schematic diagram of the present invention;

[0041] Figure 7 for Figure 6 A partial enlarged schematic diagram of part C in the middle;

[0042] Figure 8 for Figure 6 A partial enlarged schematic diagram of part D in the middle;

[0043] Figure 9 It is a schematic structural diagram of the rotating ring, the inflatable airbag and the top block in the present invention.

[0044] The figure shows:

[0045] Base 1 top block 402

[0046] Equipment slot 101 Second air outlet 403

[0047] Placement slot 102 Second rotary connector 404

[0048] Motor 201 knocks piston cylinder 5

[0049] Rotating plate 202 Spring member 501

[0050] First clamping piston cylinder 203 knocking block 502

[0051] Clamping plate 204 Air pump 6

[0052] Laser sensor 205 Exhaust pipe 601

[0053] Abutment plate 206 first clamping connecting pipe 602

[0054] First rotary connector 207 Second clamping connector 603

[0055] Second clamping piston cylinder 3 First auxiliary pipe 6031

[0056] Clamping block 301 knocks connecting pipe 604

[0057] First air outlet 302 Airbag connecting pipe 605

[0058] Anti-slip pattern 303 Second auxiliary pipe 6051

[0059] Rotating ring 4 Filter tank 7

[0060] Inflatable airbag 401 DETAILED DESCRIPTION

[0061] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0062] The present invention discloses a tool for measuring the bending moment of a crossed roller bearing. By setting a first clamping mechanism and a second clamping mechanism, the inner and outer rings of the bearing can be switched for clamping. The operation is simple and the clamping is stable. While subsequently ensuring that the bearing is fixed, the bending moment of the outer ring or the inner ring can be detected, which solves the problem of cumbersome operation and low efficiency caused by the traditional tooling fixed by fasteners such as flanges and bolts.

[0063] According to the tooling provided by the present invention for measuring the bending moment of a cross roller bearing, Figure 1 、 Figure 2 As shown, it includes a base 1, on which a device slot 101 and a placement slot 102 are provided. Figure 3 、 Figure 4 As shown, it also includes: an air pump 6, fixedly connected to the equipment slot 101, and an air outlet pipe 601 is connected to the air outlet end of the air pump 6; a motor 201, fixedly connected to the placement slot 102, and a rotating plate 202 is fixedly connected to the output end of the motor 201; multiple groups of first clamping piston cylinders 203, annularly and evenly spaced, fixedly connected to the rotating plate 202, and the air inlet ends of the first clamping piston cylinders 203 are connected to the air outlet pipe 601; a clamping plate 204, fixedly connected to the telescopic end of the first clamping piston cylinder 203, and a laser sensor 205 is fixedly connected to the clamping plate 204. The inner ring of the fixed bearing can be clamped by the clamping plate 204, and the laser sensor 205 is used to detect the position of the bearing;

[0064] like Figure 6-Figure 8 As shown, multiple groups of second clamping piston cylinders 3 are fixedly connected in a ring shape in the base 1, and the air inlet end of the second clamping piston cylinder 3 is connected to the air outlet pipe 601. The telescopic end of the second clamping piston cylinder 3 is fixedly connected with a clamping block 301, and the clamping block 301 is used to clamp the outer ring of the fixed bearing; a rotating ring 4 is rotatably connected in the placement groove 102, and multiple groups of inflatable airbags 401 are fixedly connected to the rotating ring 4, and the inflatable airbags 401 are connected to the top block 402. The air inlet end of the inflatable airbag 401 is connected to the air outlet pipe 601, and the inflatable airbag 401 is provided with a pressure relief pipe. The inflow of gas can expand the inflatable airbag 401, and then the top block 402 can be pressed against the bottom of the bearing;

[0065] like Figure 5 As shown, a plurality of groups of knocking piston cylinders 5 are fixedly connected in a ring shape in the base 1, and the knocking piston cylinder 5 is connected to the air outlet pipe 601. A groove is provided on the telescopic end of the knocking piston cylinder 5, and a spring member 501 is connected in the groove. A knocking block 502 is slidably connected in the groove, and the knocking block 502 is connected to the spring member 501. By extending the telescopic end of the knocking piston cylinder 5, the knocking block 502 can be brought close to the clamping plate 204, and then collides with the rotating clamping plate 204 to generate vibration;

[0066] The outlet pipe 601 is connected to a first clamping connection pipe 602, a second clamping connection pipe 603, a knocking connection pipe 604, and an airbag connection pipe 605. The first clamping connection pipe 602 is connected to the first clamping piston cylinder 203, the second clamping connection pipe 603 is connected to the second clamping piston cylinder 3, the knocking connection pipe 604 is connected to the knocking piston cylinder 5, and the airbag connection pipe 605 is connected to the inflatable airbag 401.

[0067] The clamping block 301 is provided with multiple groups of first air outlet holes 302. The second clamping connecting tube 603 is connected to a first auxiliary tube 6031, which is connected to the first air outlet holes 302. The top block 402 is provided with multiple groups of second air outlet holes 403, which are arranged at an angle. The airbag connecting tube 605 is connected to a second auxiliary tube 6051, which is connected to the second air outlet holes 403. Blowing air simultaneously through the inclined second air outlet holes 403 can cause the rotating ring 4 to rotate.

[0068] A first rotating connector 207 is fixedly connected to the output end of the motor 201, and the first rotating connector 207 is connected to the first clamping connecting tube 602. A second rotating connector 404 is connected to the bottom of the rotating ring 4, and the second rotating connector 404 is connected to the airbag connecting tube 605; a filter tank 7 is fixedly connected in the equipment slot 101, and the filter tank 7 is connected to the air inlet end of the air pump 6; a support plate 206 is fixedly connected to the clamping plate 204, and an anti-slip groove 303 is provided on the clamping block 301.

[0069] The first clamping piston cylinder 203, the second clamping piston cylinder 3, the inflatable airbag 401 and the knocking piston cylinder 5 in this device are all provided with pressure relief pipes, and the first clamping connecting pipe 602, the second clamping connecting pipe 603, the knocking connecting pipe 604, the airbag connecting pipe 605, the first auxiliary pipe 6031, the second auxiliary pipe 6051 and the air inlet end of each air-using component, as well as the pressure relief pipe are all provided with electronic valves, which makes it convenient to individually control the status of each air-using component.

[0070] The working principle of the present invention is as follows:

[0071] When in use, first place the base 1 of the tooling on a stable workbench, start the air pump 6, and the air pump 6 inhales filtered clean air from the filter tank 7 and delivers the compressed air to various air-consuming components through the air outlet pipe 601.

[0072] Then place the cross roller bearing to be tested in the equipment slot 101. Generally, the outer diameter of the cross roller bearing is smaller than the outer diameter of the equipment slot 101. At this time, the cross roller bearing can be placed in the equipment slot 101. At this time, the default state is that the inflatable airbag 401 is full, and the first clamping piston cylinder 203, the second clamping piston cylinder 3 and the knocking piston cylinder 5 are in a contracted state. At this time, the cross roller bearing is lifted up by the top block 402, and then the electronic valve in the first clamping connecting pipe 602 can be opened to allow gas to enter the first clamping piston cylinder 203, thereby making the abutment plate 206 on the clamping plate 204 2 continuously approach the inner ring of the cross roller bearing, and then with the squeezing of the abutment plate 206, the inner ring of the cross roller bearing can be fixed. At this time, the preliminary fixation of the cross roller bearing can be completed, and the outer ring rotation and bearing bending moment detection can be carried out subsequently.

[0073] Alternatively, the electronic valve in the second clamping connecting tube 603 may be opened to allow gas to enter the second clamping piston cylinder 3, thereby extending the second clamping piston cylinder 3 and continuously moving the clamping plate 204 closer to the outer ring of the cross roller bearing. At this time, the outer ring of the cross roller bearing is fixed, and the rotation of the inner ring and the bending moment of the bearing can be detected subsequently.

[0074] When the crossed roller bearing is fixed, multiple groups of laser sensors 205 detect the surface of the crossed roller bearing to check whether the bearing is in a horizontal state. If it is not in a horizontal state, a signal is sent to facilitate the user to know the current state, avoiding the situation where a horizontal detection is required but the crossed roller bearing is in a tilted state, thereby affecting the detection result.

[0075] When it is necessary to detect the bending moment of the inner ring of the bearing, the motor 201 is started, and its output end drives the rotating plate 202 to rotate. The compressed air enters the first clamping piston cylinder 203 through the first clamping connecting pipe 602, pushing the telescopic end of the first clamping piston cylinder 203 to extend, so that the clamping plate 204 firmly clamps the inner ring of the bearing. At the same time, the laser sensor 205 starts working to monitor the position of the bearing in real time to ensure that the bearing is in a horizontal state, providing a guarantee for subsequent accurate measurement.

[0076] If the bending moment of the bearing outer ring is to be detected, the compressed air output by the air pump 6 enters the second clamping piston cylinder 3 through the second clamping connecting pipe 603. The telescopic end of the second clamping piston cylinder 3 pushes the clamping block 301 out to fix the bearing outer ring. During the fixing process, the anti-slip grooves 303 on the clamping block 301 effectively prevent the bearing from sliding during the clamping process.

[0077] At the same time, before the inspection, in order to ensure the inspection accuracy, the cleaning function is turned on, and the compressed air enters the first air outlet 302 on the clamping block 301 through the first auxiliary pipe 6031 to clean the surface of the outer ring of the bearing; at the same time, the compressed air enters the second air outlet 403 inclinedly arranged on the top block 402 through the second auxiliary pipe 6051 to clean the bottom of the bearing, and due to the inclined design of the second air outlet 403, the blown gas can also cause the rotating ring 4 to rotate, further enhancing the cleaning effect.

[0078] When the bearing is initially placed unevenly, the compressed air output by the air pump 6 enters the inflatable airbag 401 through the airbag connecting tube 605 to expand it, and the top block 402 presses against the bottom of the bearing. The bearing is adjusted to a horizontal state as needed. To simulate bending moment detection under tilting conditions, the bearing can be switched from a horizontal state to a tilted state by controlling the inflation and deflation of the inflatable airbag 401, and then the cross roller bearing is locked and fixed through the first clamping piston cylinder 203 or the second clamping piston cylinder 3 to facilitate subsequent comprehensive detection of tilt.

[0079] During the measurement process, if it is necessary to simulate a vibration environment, the compressed air output by the air pump 6 enters the knocking piston cylinder 5 through the knocking connecting pipe 604, and the telescopic end of the knocking piston cylinder 5 extends, so that the knocking block 502 is close to the rotating clamping plate 204. The collision between the two generates vibration, simulating the operating state of the bearing in a vibration environment, so as to perform comprehensive testing. The specific vibration intensity can be determined by the number of extended knocking piston cylinders 5, and the greater the number, the greater the intensity.

[0080] During the entire testing process, the first rotating connector 207 at the output end of the motor 201 is connected to the first clamping connecting tube 602 to ensure that the first clamping piston cylinder 203 can normally intake air when the rotating plate 202 rotates; the second rotating connector 404 at the bottom of the rotating ring 4 is connected to the airbag connecting tube 605 to ensure that the air intake of the inflatable airbag 401 is not affected when the rotating ring 4 rotates;

[0081] The present invention utilizes the first clamping piston cylinder 203 and the second clamping piston cylinder 3. This ingenious design enables quick and convenient switching between clamping the inner and outer rings of the bearing. The laser sensor 205 is also used to ensure that the bearing is precisely level. This allows for efficient bending moment testing of both the outer and inner rings while maintaining a secure bearing position. This significantly improves the convenience and accuracy of testing.

[0082] In terms of cleaning function, the design of the first air outlet 302 and the second air outlet 403 can fully clean the bearing surface before testing, effectively removing attached dust, debris and other impurities, preventing these pollutants from interfering with the testing process, and providing reliable guarantee for subsequent accurate testing;

[0083] Through the structure of the inflatable airbag 401 and the top block 402, the bearing state can be adjusted. When the initial state of the bearing is not horizontal, it can be quickly adjusted to a horizontal state. According to different working conditions, the horizontal bearing can be flexibly switched to an inclined state, thereby meeting a variety of bending moment detection scenarios and significantly broadening the scope of application of the detection.

[0084] In addition, the setting of the knocking piston cylinder 5 enables the present invention to continuously emit regular vibrations during the rotation of the bearing, accurately simulating the operating state of the bearing under a real vibration environment, providing strong support for comprehensive and integrated testing, and ensuring that the test results are more in line with practical applications.

[0085] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0086] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A tool for measuring the bending moment of a crossed roller bearing, characterized in that: include: A base (1), wherein the base (1) is provided with a device slot (101) and a placement slot (102), and the cross roller bearing is installed in the placement slot (102); An air pump (6) is installed in the equipment tank (101), and an air outlet pipe (601) is connected to the air outlet end of the air pump (6); A motor (201) is installed in the placement slot (102), and a rotating plate (202) is installed on the output end of the motor (201); a first clamping mechanism, circumferentially mounted on the rotating plate (202) and located inside the inner ring of the cross roller bearing; the first clamping mechanism is connected to the air outlet pipe (601) and is used to abut against the inner ring of the cross roller bearing under the action of the air pump (6), thereby clamping the inner ring of the cross roller bearing; A second clamping mechanism is circumferentially mounted on the inner wall of the equipment slot (101) and is located outside the outer ring of the cross roller bearing. The second clamping mechanism is connected to the air outlet pipe (601) and is used to abut against the outer ring of the cross roller bearing under the action of the air pump (6), thereby clamping the outer ring of the cross roller bearing.

2. The tool for measuring the bending moment of a crossed roller bearing according to claim 1, characterized in that: The first clamping mechanism comprises a first clamping piston cylinder (203), a clamping plate (204), a laser sensor (205), an abutment plate (206), and a first rotary connector (207), wherein the first rotary connector (207) is mounted on the output end of the motor (201); The first clamping piston cylinder (203) is mounted on the rotating plate (202), and the air inlet end of the first clamping piston cylinder (203) is connected to the air outlet pipe (601) in sequence through the first rotating connector (207) and the first clamping connecting pipe (602), and the bottom end of the clamping plate (204) is mounted on the telescopic end of the first clamping piston cylinder (203); A butt plate (206) is installed on the outer side of the top of the clamping plate (204), and the butt plate (206) is used to abut against the inner ring of the cross roller bearing. A laser sensor (205) is installed on the top of the clamping plate (204), and the laser sensor (205) is used to detect the upper edge position of the cross roller bearing.

3. The tool for measuring the bending moment of a crossed roller bearing according to claim 1, characterized in that: The second clamping mechanism comprises a second clamping piston cylinder (3) and a clamping block (301), and the second clamping piston cylinder (3) is installed on the inner wall of the placement groove (102); The air inlet end of the second clamping piston cylinder (3) is connected to the air outlet pipe (601) via a second clamping connecting pipe (603), and the clamping block (301) is mounted on the telescopic end of the second clamping piston cylinder (3) for contacting the outer ring of the cross roller bearing.

4. The tool for measuring the bending moment of a crossed roller bearing according to claim 1, characterized in that: It also includes a lifting mechanism, which includes a rotating ring (4), an inflatable airbag (401) and a lifting block (402). The rotating ring (4) can be rotatably installed in the placement groove (102) and is located at the bottom of the cross roller bearing. There are multiple inflatable airbags (401) and they are circumferentially mounted on the rotating ring (4). The air inlet end of the inflatable airbag (401) is connected to the air outlet pipe (601) via an airbag connecting pipe (605). The top block (402) is arranged on the top of the inflatable airbag (401). When the inflatable airbag (401) is inflated, the top block (402) is driven to rise and abut against the bottom of the cross roller shaft.

5. The tool for measuring the bending moment of a crossed roller bearing according to claim 1, characterized in that: It also includes a plurality of knocking mechanisms arranged along the circumferential direction, wherein the knocking mechanisms include a knocking piston cylinder (5), a spring member (501) and a knocking block (502), and the knocking piston cylinder (5) is installed on the inner wall of the placement groove (102); The air inlet end of the knocking piston cylinder (5) is connected to the air outlet pipe (601) via a knocking connecting pipe (604); a groove is provided on the telescopic end of the knocking piston cylinder (5); the spring member (501) is installed in the groove; the knocking block (502) is installed at the end of the spring member (501) and is slidably arranged in the groove; When the telescopic end of the knocking piston cylinder (5) is extended, it drives the knocking block (502) to move toward the first clamping mechanism, thereby colliding with the rotating first clamping mechanism and generating vibration.

6. The tool for measuring the bending moment of a crossed roller bearing according to claim 3, characterized in that: The clamping block (301) is provided with a plurality of first air outlet holes (302), the second clamping connecting pipe (603) is connected to a first auxiliary pipe (6031), and the first auxiliary pipe (6031) is connected to the first air outlet holes (302).

7. The tool for measuring the bending moment of a crossed roller bearing according to claim 4, characterized in that: A plurality of groups of second air outlet holes (403) are provided on the top of the top block (402), a second auxiliary tube (6051) is connected to the airbag connecting tube (605), and the second air outlet holes (403) are connected to the second auxiliary tube (6051).

8. The tool for measuring the bending moment of a crossed roller bearing according to claim 7, characterized in that: The bottom of the rotating ring (4) is connected to a second rotating connector (404), and the inflatable airbag (401) is connected to the airbag connecting tube (605) via the second rotating connector (404); The second air outlet holes (403) are arranged at an angle, and air is blown simultaneously through the inclined second air outlet holes (403) to rotate the rotating ring (4).

9. The tool for measuring the bending moment of a crossed roller bearing according to claim 3, characterized in that: The inner side surface of the clamping block (301) is provided with anti-slip grooves (303).

10. The tool for measuring the bending moment of a crossed roller bearing according to claim 1, characterized in that: A filter tank (7) is fixedly installed in the equipment tank (101), and the filter tank (7) is connected to the air inlet end of the air pump (6).

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