A device for measuring the inner ring raceway width of cylindrical roller bearings

Abstract

This invention relates to the field of bearing testing equipment technology, and discloses a device for testing the inner ring raceway width of a cylindrical roller bearing. The device includes a fixed base, which consists of a limiting cylinder and a movable disk. The movable disk is slidably installed inside the limiting cylinder. The bearing inner ring is positioned above the movable disk, and a bearing positioning mechanism is also positioned above the movable disk for clamping and positioning the bearing. A testing mechanism is mounted on the fixed base, using a probe as the contact element and a pressure sensor as the detection element. This invention uses a gas-regulated method for testing. By compressing the gas, the probe is moved, causing it to contact the inner wall of the bearing inner ring raceway and form a limiting position. The gas pressure is detected by a pressure detector, and the bearing inner ring's quality is determined by observing whether the pressure reading is appropriate.

Description

Technical Field

[0001] This invention relates to the field of bearing testing equipment technology, specifically to a device for testing the inner ring raceway width of cylindrical roller bearings. Background Technology

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during their movement, and ensure their rotational accuracy. There are many types of bearings suitable for use in different environments. Among them are cylindrical roller bearings, which are radial rolling bearings with cylindrical rollers as the rolling elements. Their internal structure uses parallel rollers with spacers or spacers between them to prevent the rollers from tilting or rubbing against each other, effectively preventing an increase in rotational torque. The cylindrical rollers on the bearings are in line contact with the raceways, and they have a large radial load capacity, making them suitable for bearing heavy loads and impact loads, as well as high-speed rotation.

[0003] When manufacturing cylindrical roller bearings, high dimensional precision is required. Therefore, precision testing is performed on individual components before assembly, including testing the width of the bearing inner ring raceway. This ensures that the inner ring raceway width matches the cylindrical rollers, preventing gaps that could cause displacement of the cylindrical rollers during bearing rotation, increasing wear and affecting the bearing's service life.

[0004] Currently, the methods for measuring the inner ring raceway width of cylindrical roller bearings mostly involve calipers or templates, which have problems such as large errors and low efficiency. For example, traditional caliper measurement relies on manual operation, making it difficult to guarantee measurement consistency; template measurement is limited by the accuracy of the template and cannot meet the testing needs of products with multiple specifications. Summary of the Invention

[0005] The purpose of this invention is to provide a device for detecting the inner ring raceway width of cylindrical roller bearings, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] This invention relates to a device for detecting the inner ring raceway width of a cylindrical roller bearing. The device includes a fixed base, which comprises a limiting cylinder and a movable disk. The movable disk is slidably mounted within the limiting cylinder. The bearing inner ring is positioned above the movable disk, and a bearing positioning mechanism is also positioned above the movable disk for clamping and positioning the bearing. A detection mechanism is mounted on the fixed base. The detection mechanism uses a probe as a contact element and a pressure sensor as a detection element. A quantitative gas pressure is applied by pressing down the movable disk. This gas pressure causes the probe to contact the inner walls of both sides of the bearing inner ring raceway and restrict its movement. The pressure sensor detects the gas pressure to determine whether the bearing inner ring raceway width is within acceptable limits.

[0008] Furthermore, the bearing positioning mechanism consists of a lifting cylinder, a connecting frame, a suction cup, and a rotating assembly. The lifting cylinder is positioned above the inner ring of the bearing, and the suction cup is positioned above the inner ring of the bearing, allowing the inner ring of the bearing to be adsorbed. The connecting frame is positioned above the inner ring of the bearing and is used to connect the lifting cylinder and the suction cup. The rotating assembly is mounted on the connecting frame, which is connected by a fixed sleeve and a rotating sleeve. The fixed sleeve and the rotating sleeve are in a rotatable connection state. The fixed sleeve is connected to the telescopic shaft of the lifting cylinder, and the rotating sleeve is connected to the suction cup. The rotating assembly is used to drive the rotating sleeve to rotate, thereby driving the inner ring of the bearing to rotate.

[0009] Furthermore, the detection mechanism consists of a detection component and an adjustment component. The detection component comprises an adjustment cylinder, piston one, push rod one, air supply pipe, probe tube, piston two, push rod two, and probe. The adjustment cylinder is mounted on the limiting cylinder. Piston one is slidably mounted on the adjustment cylinder. Push rod one is mounted on the moving plate. The bottom end of push rod one extends into the adjustment cylinder and connects to piston one. The probe tube is positioned above the moving plate. The air supply pipe is mounted on the adjustment cylinder. The other end of the air supply pipe is connected to the probe tube. Piston two is slidably mounted on the probe tube. Push rod two is slidably mounted on the probe tube. One end of push rod two is connected to piston two. The other end of push rod two extends out of the probe tube. The probe is positioned on the outside of the probe tube and is connected to one end of push rod two.

[0010] Furthermore, the probe consists of a connecting sleeve and a detection ball. The connecting sleeve is mounted on the second push rod, and the detection ball is nested on the connecting sleeve. During testing, the detection ball makes point contact with the inner wall of the bearing inner ring raceway.

[0011] Furthermore, the adjustment assembly consists of a fixed frame, a movable block, an electric push rod one, an electric push rod two, a connecting strip one, a connecting strip two, and a sliding frame. The fixed frame is mounted on the movable plate, the movable block is slidably mounted on the fixed frame, the air supply pipe passes through the movable block and is connected to the movable block, the electric push rod one is mounted on the fixed frame, the telescopic shaft of the electric push rod one is connected to the movable block, the sliding frame is slidably mounted on the movable block, the electric push rod two is mounted on the movable block, the telescopic shaft of the electric push rod two is connected to the sliding frame, the connecting strip one is mounted on the movable block, the other end of the connecting strip one is rotatably connected to the probe tube, the connecting strip two is rotatably mounted on the sliding frame, and the other end of the connecting strip two is rotatably connected to the probe tube.

[0012] Furthermore, the connecting strip is composed of a first strip and a second strip. The first strip has a positioning groove, and the second strip has a positioning block installed on it. The positioning block extends into the positioning groove and is adapted to the positioning groove. The first strip has a connecting bolt, and part of the connecting bolt extends into the positioning block and is threadedly connected to the positioning block.

[0013] Furthermore, a calibration frame is installed on the fixed frame. The calibration frame is concave in shape, and multiple calibration grooves are provided on both inner walls of the calibration frame. The calibration grooves are adapted to the probe.

[0014] Furthermore, a positioning ball is fitted on the testing cylinder. During testing, the testing cylinder moves horizontally, and the positioning ball contacts the inner wall of the bearing's inner raceway to limit the distance between the testing cylinder and the bearing's inner ring.

[0015] Furthermore, the movable disk consists of a base disk and a rotating disk. The rotating disk is located at the center of the base disk and is rotatably connected to the base disk. During testing, the bottom of the bearing inner ring contacts the rotating disk. When the rotating assembly drives the bearing inner ring to rotate, the rotating disk rotates with the base disk to ensure the rotational stability of the bearing inner ring.

[0016] The present invention has the following beneficial effects:

[0017] (1) The present invention uses gas adjustment for detection. The gas is compressed by adjusting the height of the moving plate and transported through the gas pipe. The gas pushes the probe to move and makes the probe contact the inner wall of the bearing inner ring raceway. After the probe contacts the probe, the inner wall of the raceway limits the probe. At this time, the gas is compressed and forms a certain pressure. The gas pressure is detected by the pressure detector. A suitable pressure value range is preset. By observing whether the pressure detection value is appropriate, it is determined whether the bearing inner ring is qualified. This method is faster and more convenient than the caliper measurement in the prior art and more accurate than the template measurement. At the same time, the bearing inner ring raceway width is detected by the extension and retraction of two corresponding probes to adapt to different bearing inner ring detection and improve the applicability of the detection equipment.

[0018] (2) By using an electric push rod, the distance between the probe and the inner raceway of the bearing can be adjusted to accommodate bearing inner races of different diameters. The angle of the detection air cylinder can be adjusted by using an electric push rod, a moving frame, a connecting strip, and a connecting strip, so that the detection air cylinder can be adapted to the detection settings of bearing inner raceways with different tilt angles. In summary, the applicability of the detection equipment can be further improved.

[0019] (3) By setting the probe as a connecting sleeve and a detection ball, the present invention can make the contact between the probe and the ball a point contact. Compared with the line contact in the existing caliper measurement and the surface contact in the template measurement, the contact area is smaller and the measurement error is smaller. While ensuring the accuracy of the measurement, it also reduces the wear of the probe and improves the service life of the testing equipment.

[0020] (4) The present invention is equipped with a calibration component. The distance between the two corresponding calibration grooves in the calibration component is close. By applying a fixed pressure of gas, the probe is brought into contact with the calibration groove, and the pressure value is observed to determine whether the probe is worn. This can ensure the accuracy of the detection of the inner ring raceway width of the bearing. At the same time, the calibration component can be used to place the probe in the calibration groove when the equipment is not in use, which can improve the protection of the probe and avoid the probe being damaged by the external environment, thus ensuring the service life of the equipment.

[0021] (5) The present invention uses a probe to detect the width of the inner ring raceway of the bearing. During the detection process, the bearing is rotated by the rotating component. Through the rotation of the bearing, the width of the inner ring raceway of the bearing can be quickly and comprehensively detected by the pressure sensor to determine whether the value has changed, thereby determining whether the inner ring raceway of the bearing has unevenness, and then determining whether the inner ring of the bearing is qualified. This ensures the accuracy of the detection while also improving the efficiency of the detection.

[0022] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the lifting cylinder, connecting frame, and suction cup in this invention;

[0026] Figure 3 This is a schematic diagram of the structure of the limiting cylinder and the movable disk in this invention;

[0027] Figure 4 This is a cross-sectional view of the limiting cylinder in this invention;

[0028] Figure 5 This is a schematic diagram of the structure of the movable disk in this invention;

[0029] Figure 6 This is a schematic diagram of the detection mechanism in this invention;

[0030] Figure 7 This is a schematic diagram of another structure of the detection mechanism in this invention;

[0031] Figure 8This is a cross-sectional view of the detection cylinder in this invention;

[0032] Figure 9 This is a schematic diagram of the structure of the connecting strip 2 in this invention.

[0033] The attached diagram lists the components represented by each number as follows:

[0034] In the diagram: 1. Lifting cylinder; 2. Rotating assembly; 3. Connecting frame; 4. Suction cup; 5. Bearing inner ring; 6. Limiting cylinder; 7. Moving disk; 701. Base disk; 702. Rotating disk; 8. Reset assembly; 9. Adjusting cylinder; 10. Piston one; 11. Push rod one; 12. Pressure sensor; 13. Air supply pipe; 14. Fixed frame; 15. Moving block; 16. Electric push rod one; 17. Connecting strip one; 18. Sliding frame; 19. Connecting strip two; 20. Electric push rod two; 21. Detection cylinder; 22. Piston two; 23. Push rod two; 24. Probe; 25. Positioning ball; 26. Calibration frame. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-9As shown, this invention is a device for detecting the inner ring raceway width of a cylindrical roller bearing. It includes a fixed base, which consists of a limiting cylinder 6 and a movable disk 7. The movable disk 7 is slidably installed within the limiting cylinder 6 and comprises a base disk 701 and a rotating disk 702. The rotating disk 702 is located at the center of the base disk 701 and is rotatably connected to the base disk 701. During testing, the bottom of the bearing inner ring 5 contacts the rotating disk 702. When the rotating assembly 2 drives the bearing inner ring 5 to rotate, the rotating disk 702 rotates with the base disk 701 to ensure the rotational stability of the bearing inner ring 5. The bearing inner ring 5 is positioned above the movable disk 7, and a bearing positioning mechanism is also positioned above the movable disk 7 for clamping and positioning the bearing. A detection mechanism is mounted on the fixed base. The probe 24 is used as the contact element and the pressure sensor 12 is used as the detection element. A quantitative gas pressure is applied by the downward moving plate 7. The gas pressure causes the probe 24 to contact the inner walls on both sides of the inner ring raceway of the bearing and restricts its movement. The pressure sensor 12 detects the gas pressure to determine whether the width of the inner ring raceway of the bearing is qualified. A reset assembly 8 is installed on the limiting cylinder 6. The reset assembly 8 is used to restore the moving plate 7 to its initial position when no external force is applied. The reset assembly 8 consists of a reset cylinder, a reset push rod and a reset spring. The reset cylinder is installed on the limiting cylinder 6. The reset push rod is slidably installed on the reset cylinder. The top end of the reset push rod extends to the top of the limiting cylinder 6 and is connected to the moving plate 7. The reset spring is installed inside the reset cylinder and the top end of the reset spring is connected to the reset push rod.

[0037] The bearing positioning mechanism consists of a lifting cylinder 1, a connecting frame 3, a suction cup 4, and a rotating assembly 2. The lifting cylinder 1 is positioned above the inner ring 5 of the bearing. The suction cup 4 is also positioned above the inner ring 5 and utilizes existing technology to adhere to the inner ring 5. The connecting frame 3 is positioned above the inner ring 5 and connects the lifting cylinder 1 and the suction cup 4. The rotating assembly 2 is mounted on the connecting frame 3, which is connected by a fixed sleeve and a rotating sleeve. The fixed sleeve and the rotating sleeve are in a rotatable connection. The fixed sleeve is connected to the telescopic shaft of the lifting cylinder 1. The sleeve is connected to the suction cup 4. The rotating component 2 is used to drive the rotating sleeve to rotate, thereby driving the inner ring 5 of the bearing to rotate. A positioning cylinder is installed at the bottom of the suction cup 4. The diameter of the positioning cylinder is the same as the inner diameter of the inner ring 5 of the bearing. The positioning cylinder is used to limit the inner ring 5 of the bearing. The rotating component 2 consists of a rotating motor, gear one, and gear two. The rotating motor is installed on the fixed sleeve. A ring rack is provided on the rotating sleeve. Gear one is installed on the output shaft of the rotating motor. Gear two is rotatably installed on the fixed sleeve. Gear two is located between the ring rack and gear one. Gear two meshes with gear one and the ring rack.

[0038] The testing mechanism consists of a testing component and an adjustment component. The testing component comprises an adjustment cylinder 9, a piston 10, a push rod 11, an air supply pipe 13, a testing cylinder 21, a piston 22, a push rod 23, and a probe 24. The adjustment cylinder 9 is mounted on the limiting cylinder 6. The piston 10 is slidably mounted on the adjustment cylinder 9. The push rod 11 is mounted on the moving disk 7, with its bottom end extending into the adjustment cylinder 9 and connecting to the piston 10. The testing cylinder 21 is positioned above the moving disk 7. The air supply pipe 13 is mounted on the adjustment cylinder 9. The other end of the air supply pipe 13... One end is connected to the detection cylinder 21. Piston 22 is slidably mounted on the detection cylinder 21. Push rod 23 is slidably mounted on the detection cylinder 21. One end of push rod 23 is connected to piston 22. The other end of push rod 23 extends out of the detection cylinder 21. Probe 24 is set on the outside of the detection cylinder 21. Probe 24 is connected to one end of push rod 23. Probe 24 consists of a connecting sleeve and a detection ball. The connecting sleeve is mounted on push rod 23. The detection ball is nested on the connecting sleeve. During detection, the detection ball makes point contact with the inner wall of the bearing inner ring raceway.

[0039] The adjustment assembly consists of a fixed frame 14, a movable block 15, an electric push rod 16, an electric push rod 20, a connecting strip 17, a connecting strip 29, and a sliding frame 18. The fixed frame 14 is mounted on the movable disk 7. The movable block 15 is slidably mounted on the fixed frame 14. The air supply pipe 13 passes through the movable block 15 and is connected to it. The electric push rod 16 is mounted on the fixed frame 14, and its telescopic shaft is connected to the movable block 15. The sliding frame 18 is slidably mounted on the movable block 15. The electric push rod 20 is mounted on the movable block 15. The telescopic shaft is connected to the sliding frame 18. Connecting strip 17 is installed on the moving block 15. The other end of connecting strip 17 is rotatably connected to the detection air cylinder 21. Connecting strip 29 is rotatably installed on the sliding frame 18. The other end of connecting strip 29 is rotatably connected to the detection air cylinder 21. Connecting strip 17 is composed of plate 1 and plate 2. Plate 1 has a positioning groove. Plate 2 has a positioning block installed. The positioning block extends into the positioning groove and is adapted to the positioning groove. Plate 1 has a connecting bolt. The part of the connecting bolt extends into the positioning block and is threadedly connected to the positioning block.

[0040] A calibration frame 26 is installed on the fixed frame 14. The calibration frame 26 is concave and has multiple calibration grooves on both inner walls. The calibration grooves are adapted to the probe 24.

[0041] The testing cylinder 21 is fitted with positioning balls 25. During testing, the testing cylinder 21 moves horizontally, and the positioning balls 25 contact the inner wall of the bearing raceway to limit the distance between the testing cylinder 21 and the inner ring 5 of the bearing.

[0042] In this embodiment, the lifting cylinder 1 can be connected to an external moving mechanism. The moving mechanism is constructed using existing technology, such as a screw mechanism or a cylinder, and is used to drive the lifting cylinder 1 to move, so as to install the bearing inner ring 5 in other places, and facilitate the inspection of the bearing inner ring 5.

[0043] Before use, a qualified bearing inner ring 5 needs to be pre-tested to provide the pressure detector with a suitable bearing inner ring raceway width test value. At the same time, according to the inclination angle of the bearing inner ring raceway, the electric push rod 20 is activated to push the connecting bar 19 to move, and the angle of the detection air cylinder 21 is adjusted so that its inclination angle is the same as the inclination angle of the bearing inner ring raceway.

[0044] The specific usage method is as follows: the inner ring 5 of the bearing is adsorbed by the suction cup 4, and the inner ring 5 of the bearing is moved above the moving disk 7 by the suction cup 4. Then, the electric push rod 16 is activated to push the moving block 15 to move, thereby pushing the detection air cylinder 21 to move, so that the distance between the detection air cylinder 21 and the raceway of the inner ring of the bearing is in a suitable position. Then, the lifting cylinder 1 pushes the inner ring 5 of the bearing to descend, which in turn pushes the push rod 11 and the piston 10 to descend in the adjusting air cylinder 9, so that the gas in the adjusting air cylinder 9 flows into the detection air cylinder 21, thereby pushing the piston 22. The push rod 23 moves, pushing the probe 24 to move and contact the inner ring raceway of the bearing. The movement of the probe 24 is limited by the inner ring raceway of the bearing. At this time, the gas pressure in the detection cylinder 21, the air supply pipe 13 and the regulating cylinder 9 increases. The pressure sensor 12 detects this gas pressure to determine whether the width of the inner ring raceway of the bearing is qualified. At the same time, the rotating assembly 2 drives the inner ring 5 of the bearing to rotate. The probe 24 performs a comprehensive inspection of the inner ring raceway of the bearing, ensuring both the comprehensiveness and accuracy of the inspection of the inner ring raceway width.

[0045] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for detecting the inner ring raceway width of a cylindrical roller bearing, comprising a fixed base, characterized in that: The fixed base consists of a limiting cylinder (6) and a movable disk (7). The movable disk (7) is slidably installed inside the limiting cylinder (6). A bearing inner ring (5) is provided above the movable disk (7). A bearing positioning mechanism is provided above the movable disk (7) for clamping and positioning the bearing. The bearing positioning mechanism consists of a lifting cylinder (1), a connecting frame (3), a suction cup (4), and a rotating component (2). The lifting cylinder (1) is located above the inner ring (5) of the bearing, and the suction cup (4) is located above the inner ring (5) of the bearing. The inner ring (5) of the bearing can be adsorbed by the suction cup (4). The connecting frame (3) is located above the inner ring (5) of the bearing. The connecting frame (3) is used to connect the lifting cylinder (1) and the suction cup (4). The rotating component (2) is located on the connecting frame (3). The connecting frame (3) is connected by a fixed sleeve and a rotating sleeve. The fixed sleeve and the rotating sleeve are in a rotating connection state. The fixed sleeve is connected to the telescopic shaft of the lifting cylinder (1), and the rotating sleeve is connected to the suction cup (4). The rotating component (2) is used to drive the rotating sleeve to rotate, thereby driving the inner ring (5) of the bearing to rotate. The fixed base is equipped with a detection mechanism. The detection mechanism uses a probe (24) as a contact element and a pressure sensor (12) as a detection element. The gas is given a quantitative pressure by pressing down the moving plate (7). The gas is pressurized so that the probe (24) contacts the inner walls on both sides of the inner ring raceway of the bearing and is restricted in its movement. The pressure sensor (12) detects the gas pressure and determines whether the width of the inner ring raceway of the bearing is qualified. The testing mechanism consists of a testing component and an adjustment component. The testing component comprises an adjustment cylinder (9), piston one (10), push rod one (11), air supply pipe (13), testing cylinder (21), piston two (22), push rod two (23), and probe (24). The adjustment cylinder (9) is mounted on the limiting cylinder (6). Piston one (10) is slidably mounted on the adjustment cylinder (9). Push rod one (11) is mounted on the moving plate (7). The bottom end of push rod one (11) extends into the adjustment cylinder (9) and connects with piston one (10). The testing cylinder (21)... The device is positioned above the movable disk (7), with the gas supply pipe (13) installed on the regulating cylinder (9). The other end of the gas supply pipe (13) is connected to the detection cylinder (21). The piston (22) is slidably installed on the detection cylinder (21), and the push rod (23) is slidably installed on the detection cylinder (21). One end of the push rod (23) is connected to the piston (22), and the other end of the push rod (23) extends out of the detection cylinder (21). The probe (24) is positioned on the outside of the detection cylinder (21), and the probe (24) is connected to one end of the push rod (23). The adjustment assembly consists of a fixed frame (14), a movable block (15), an electric push rod one (16), an electric push rod two (20), a connecting strip one (17), a connecting strip two (19), and a sliding frame (18). The fixed frame (14) is mounted on the movable disk (7), the movable block (15) is slidably mounted on the fixed frame (14), the air supply pipe (13) passes through the movable block (15) and is connected to the movable block (15), the electric push rod one (16) is mounted on the fixed frame (14), and the telescopic shaft of the electric push rod one (16) is... Connected to the moving block (15), the sliding frame (18) is slidably mounted on the moving block (15), the electric push rod two (20) is mounted on the moving block (15), the telescopic shaft of the electric push rod two (20) is connected to the sliding frame (18), the connecting strip one (17) is mounted on the moving block (15), the other end of the connecting strip one (17) is rotatably connected to the detection air cylinder (21), the connecting strip two (19) is rotatably mounted on the sliding frame (18), and the other end of the connecting strip two (19) is rotatably connected to the detection air cylinder (21).

2. The device for detecting the inner ring raceway width of a cylindrical roller bearing according to claim 1, characterized in that: The probe (24) consists of a connecting sleeve and a detection ball. The connecting sleeve is installed on the push rod (23), and the detection ball is nested on the connecting sleeve. During the test, the detection ball makes point contact with the inner wall of the inner ring raceway of the bearing.

3. The device for detecting the inner ring raceway width of a cylindrical roller bearing according to claim 1, characterized in that: The connecting strip (17) is composed of a first strip and a second strip. The first strip has a positioning groove, and the second strip has a positioning block. The positioning block extends into the positioning groove and is adapted to the positioning groove. The first strip has a connecting bolt, and part of the connecting bolt extends into the positioning block and is threadedly connected to the positioning block.

4. The device for detecting the inner ring raceway width of a cylindrical roller bearing according to claim 1, characterized in that: A calibration frame (26) is installed on the fixed frame (14). The calibration frame (26) is concave. Multiple calibration grooves are provided on both sides of the inner wall of the calibration frame (26). The calibration grooves are adapted to the probe (24).

5. The device for detecting the inner ring raceway width of a cylindrical roller bearing according to claim 1, characterized in that: The testing cylinder (21) is fitted with positioning balls (25). During testing, the testing cylinder (21) moves horizontally, and the positioning balls (25) contact the inner wall of the bearing raceway to limit the distance between the testing cylinder (21) and the bearing inner ring (5).

6. The device for detecting the inner ring raceway width of a cylindrical roller bearing according to claim 1, characterized in that: The movable disk (7) consists of a base disk (701) and a rotating disk (702). The rotating disk (702) is located at the center of the base disk (701). The rotating disk (702) is rotatably connected to the base disk (701). During testing, the bottom of the bearing inner ring (5) contacts the rotating disk (702). When the rotating assembly (2) drives the bearing inner ring (5) to rotate, the rotating disk (702) rotates with the base disk (701) to ensure the rotational stability of the bearing inner ring (5).

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