A bearing inner ring inner diameter detection device

Abstract

The present invention belongs to the field of bearing detection, specifically a bearing inner ring inner diameter detection device, including an electric slide rail group and an inspection seat, the bottom movable end of the electric slide rail group is connected to a switching column, the bottom of the switching column is equipped with an optical probe and a plurality of detection heads, the plurality of detection heads are arranged in a ring and equidistantly, the horizontal detection end of the detection head is equipped with a measuring head, and the interior of the switching column is provided with a lifting seat for driving the detection head to rise and fall. Through this method, not only the function of rapid optical detection of the inner diameter of the bearing is realized, but also when processing bearings with inner grooves in the inner diameter, new inner diameter information can be more comprehensively detected. At the same time, the measurement method of the detection head is based on the data of optical measurement and the change value of mechanical measurement. Not only is the accuracy reliable, but there is no need to calibrate the head multiple times, thereby improving work efficiency.

Description

Technical Field

[0001] The invention belongs to the field of bearing detection, in particular to a device for detecting the inner diameter of a bearing inner ring. Background Art

[0002] Bearings are important components in mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and support or guide the rotation or linear motion of the shaft. They are basically composed of an inner ring, an outer ring, and rolling elements.

[0003] The inner diameter of a bearing is the diameter of its inner ring. The size of the inner diameter has a significant impact on the bearing's load-bearing capacity and operating stability. Traditional bearing inner diameter detection devices include manual measurement inside diameter dial indicators, which require the indicator head to be placed inside the bearing for manual measurement. They also include optical detection methods, which can use optical equipment to directly measure the bearing's inner diameter.

[0004] However, when the bearing has annular grooves or other grooves inside, optical inspection cannot fully detect the bearing inner diameter. When using manual measurement, not only does it require multiple calibration of the inspection tool, but the bearing's inner groove width is also narrow, and traditional tools are more cumbersome to measure, affecting inspection efficiency.

[0005] To this end, the present invention provides a device for detecting the inner diameter of a bearing inner ring. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: a bearing inner ring inner diameter detection device described in the present invention includes an electric slide rail group and an inspection seat, the bottom movable end of the electric slide rail group is connected to a switching column, an optical probe and a plurality of detection heads are installed at the bottom of the switching column, the plurality of detection heads are arranged in a ring with equal distances, a measuring head is installed at the horizontal detection end of the detection head, a lifting seat for driving the detection head to be raised and lowered is provided inside the switching column, the inspection seat is located below the switching column, a translation plate that can be translated is provided on the top surface of the inspection seat, a plurality of vertical slots are opened on the top surface of the inspection seat, and a conveyor belt that can be raised and lowered is provided in the vertical slots;

[0008] The bearing to be inspected is placed flat on the inspection seat, and is moved by the translatory plate to push the bearing to one side. The conveyor belt in the vertical slot then rises. As the conveyor belt starts, the bearing is transferred to a corner of the top surface of the inspection seat. The switching column is then driven by the electric slide assembly to be directly above the bearing. The electric slide assembly includes two vertically arranged electric slides, which allow the switching column to be moved to any position on the plane. Since the bearing is circular, after the bearing is squeezed to one side of the inspection seat by the translatory plate, the distance between the bearing and the inspection seat is the diameter of the bearing, and the bearing diameter can be calculated. The center position of the circle ensures that the switching column can be directly above the bearing, and the optical probe on the bottom of the switching column is used to detect the bearing below. The optical probe obtains the image of the bearing and can use sub-pixel technology and image processing algorithms, such as the least squares method to fit the circle for pixel subdivision to achieve sub-pixel online detection of the bearing inner diameter. The theoretical radius measurement accuracy can reach microns, and machine vision detection is non-contact, which avoids measurement errors or damage to the bearing caused by contact; through the setting of the detection header, the optical probe is first used to detect the bearing diameter, and the detection header of the corresponding diameter is set on Driven by the lifting seat, it extends downward. In order to ensure the accuracy of the detection process of the inner diameter of the bearing, it is generally necessary to use different measuring heads according to the diameters of different specifications for detection. After the optical detection, the inner diameter of the bearing is known. At this time, the appropriate detection head and measuring head are selected. The detection head can be an electronic inner diameter dial indicator. After the detection head is extended downward, it is moved to the center position of the bearing under the drive of the electric slide rail group. Then, the detection head continues to sink and moves to the inside of the bearing. The measuring head on the top of the detection head will be squeezed and shortened. During the sinking process of the detection head, the detection The meter head will detect the readings in real time. When the readings change, it means that there is a recessed part inside. When the inner diameter changes significantly, the change value at this time plus the inner diameter data is the data of the inner groove. Through this method, not only the fast inner diameter optical detection function of the bearing is realized, but also when processing bearings with inner grooves in the inner diameter, the new inner diameter information can be detected more comprehensively. At the same time, the measurement method of the detection meter head is based on the optical measurement data, plus the change value of the mechanical measurement. It is not only accurate and reliable, but also does not require multiple calibration of the meter head, thereby improving work efficiency.

[0009] Preferably, a support frame is installed on the outer side of the inspection seat, and a servo motor is fixedly connected to the top of the support frame. A screw is fixedly connected to the output end of the servo motor, and the screw is threadedly connected to the translation plate. An auxiliary rod is fixedly connected to the top of the support frame, and the auxiliary rod passes vertically through the translation plate and is slidingly connected to the translation plate. The screw is driven to rotate by the servo motor, and then the translation plate is driven to move. The moving distance of the translation plate is calculated by the number of rotations of the servo motor, and then the diameter of the bearing is known. The auxiliary rod is used to ensure the normal sliding of the translation plate.

[0010] Preferably, the plurality of vertical slots are linearly and equidistantly arranged, and a lift plate that can be raised and lowered is installed at the front end of the inspection seat. The conveying direction of the conveyor belt is perpendicular to the length direction of the lift plate. When the bearing inspection is completed, the translation plate is returned to its original position, and then the lift plate sinks. During the inspection process, the conveyor belt is in a sinking state. After the lift plate sinks, the conveyor belt rises again and drives the bearing to move toward the direction of the lift plate, thereby transporting the bearing outward. It is only necessary to place the bearings in batches above the inspection seat. Through this setting, the process of batch testing of bearings is realized, and the entire process is fully mechanized without the need for manual assistance.

[0011] Preferably, a top plate is fixedly connected to the top of the switching column, a vertically arranged reduction motor is arranged above the top plate, a switching slot is opened on the top surface of the top plate, the switching slot has multiple branches, and the multiple branches of the switching slot are adapted to multiple lifting seat positions. The bottom output end of the reduction motor can move in the switching slot. In order to improve the comprehensiveness of the detection head in detecting the inner diameter of the bearing, during the detection process, the reduction motor is used to drive the entire switching column to rotate. During rotation, it is necessary to ensure that the center of rotation is the detection head. During rotation, the position of the reduction motor needs to be moved along the switching slot to the detection head position where the inner diameter is being detected, and then rotated, so that the horizontal measuring head can detect one circle of the bearing inner diameter to ensure the accuracy of the detection.

[0012] Preferably, the bottom output end of the reduction motor is fixedly connected with a connecting disk, and the bottom of the switching slot is provided with a disc-shaped translation slot, the bottom of the connecting disk is slidably engaged in the translation slot, and the vertical rod connecting the connecting disk and the reduction motor is slidably engaged in the switching slot, and a docking valve is installed at the bottom of the connecting disk, and the bottom of the translation slot is provided with multiple docking slots, the bottom of the connecting disk is slidably engaged in the translation slot and can move normally, while the vertical rod can only move in the switching slot. When the reduction motor moves to the predetermined position, the docking valve is started, and the docking valve will push out the protrusion downward, and the protrusion enters the switching slot, thereby fixing the connecting disk and the top disk, so that the drive of the reduction motor can drive the top disk and the switching column to rotate, and rotate with the specified detection head as the center of the circle, so that the connecting disk can circle around the inner diameter of the bearing to detect the inner wall of the bearing.

[0013] Preferably, a squeezing arm is fixedly connected to the top of the support frame, and the squeezing arm is arranged horizontally. The outer side of the squeezing arm is sleeved with an squeezing pad of elastic material. When adjusting the position of the top plate, the switching column is driven to move by the electric slide rail group, so that the side wall of the switching column contacts the squeezing arm. At the beginning, the connecting plate is located in the middle of the top plate and fixed to each other. The top plate and the switching column are driven to rotate by the reduction motor to adjust the position of the switching slot. When the switching column and the squeezing arm begin to contact, they first contact the fixation of the top plate and the connecting plate, and then with the contact and extrusion, the connecting plate is moved to the specified position along the switching slot. After that, the two are fixed by the docking valve. Through this arrangement, the function of switching the connection position of the reduction motor and the top plate is realized, the position of the rotating axis of the switching column can be changed, and it is ensured that any detection head at the bottom can perform circumferential detection in the bearing.

[0014] Preferably, the inner side of the switching column is provided with a plurality of slide grooves adapted to the lifting seat, the slide groove is vertical, and two horizontally arranged series tubes are installed on the outer side of the switching column, and the two series tubes are respectively arranged at the upper and lower ends of the switching column, and a power sleeve is fixedly connected to the middle part of the switching column, and an air pump is installed inside the power sleeve, and the power sleeve is connected to the two series tubes, and the air pump in the power sleeve injects air pressure toward the bottom or top of the slide groove through the series tube. Under the air pressure injection, the lifting seat can be controlled to rise or sink, such as: injecting air pressure at the bottom of the slide groove and removing the air pressure above at the same time, the lifting seat can be pushed upward, thereby controlling the detection head below to rise, and the reverse operation can control the detection head to fall. Through this arrangement, the lifting and lowering of multiple lifting seats can be controlled by only controlling the connection relationship between the air pump and the slide groove.

[0015] Preferably, top columns are fixedly connected to the upper and lower ends of the lifting seat, the series pipe is connected to the slide slot via an electromagnetic valve, and a connecting rod is fixedly connected between the lifting seat and the detection header. The air pump only needs to control opening and closing, and the electromagnetic valve controls whether the series pipe is connected to the inside of the slide slot. At the same time, the electromagnetic valve can also connect the outside world and the slide slot, thereby removing the internal air pressure, thereby realizing the lifting function of controlling multiple lifting seats. The connecting rod is used to transmit the data of the detection header to the lifting seat. The setting of the top column is to allow a gap between the top and bottom of the lifting seat and the slide slot to allow the air pressure to be input normally.

[0016] Preferably, recovery tubes are installed on both sides of the detection head, cross bars are fixed on both sides of the measuring head, an electric roller is installed in the recovery tube, a pull rope is wrapped around the outside of the electric roller, and the end of the pull rope is sleeved on the outside of the cross bar. When using a traditional internal diameter dial indicator, the length of the detection part exceeds the inner diameter length, so certain operating skills are required to perform the detection. In order to ensure a purely mechanized operation process and reduce errors, the pull rope is first reeled in by the electric roller, and the measuring head is pulled back to ensure that the measuring head can easily penetrate into the inner diameter of the bearing, thereby effectively reducing operational errors.

[0017] Preferably, a spiral wire is fixed to the middle of the top surface of the lifting seat, the top of the spiral wire is fixed to the switching column, and the lifting seat is connected through the spiral wire, thereby providing power to the detection head and transmitting data. The spiral wire has elastic potential energy, allowing the lifting seat to bend by itself when it rises, reducing the impact on the movement of the lifting seat.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention relates to a device for detecting the inner diameter of a bearing inner ring. By setting a detection head, an optical probe is first used to detect the bearing diameter. The detection head of the corresponding diameter is extended downwardly by the lifting seat. In order to ensure the accuracy of the detection process of the bearing inner diameter, different measuring heads are generally required to be used for detection according to diameters of different specifications. After the optical detection, the inner diameter of the bearing is known. At this time, an adapted detection head and measuring head are selected. The detection head can be an electronic inner diameter micrometer. After the detection head is extended downward, it is moved to the center position of the bearing under the drive of the electric slide rail assembly. Then, the detection head is allowed to continue to sink and move to the inside of the bearing for detection. The measuring head on the top of the measuring head will be squeezed and shortened. During the sinking process of the measuring head, the measuring head will detect the reading in real time. When the reading changes, it means that there is a recessed part inside. When the inner diameter changes significantly, the change value at this time plus the inner diameter data is the data of the inner groove. Through this method, not only the fast inner diameter optical detection function of the bearing is realized, but also when processing bearings with inner grooves in the inner diameter, the new inner diameter information can be detected more comprehensively. At the same time, the measurement method of the detection head is based on the optical measurement data, plus the change value of the mechanical measurement. It is not only accurate and reliable, but also does not require multiple calibration of the head, thereby improving work efficiency.

[0020] 2. The present invention describes a device for detecting the inner diameter of the inner ring of a bearing. The servo motor drives the screw to rotate, thereby driving the translation plate to move. The moving distance of the translation plate is calculated by the number of rotations of the servo motor, and the diameter of the bearing is thereby determined. The auxiliary rod is used to ensure the normal sliding of the translation plate. After the bearing inspection is completed, the translation plate is returned to its original position, and then the lifting plate sinks. During the inspection process, the conveyor belt is in a sinking state. After the lifting plate sinks, the conveyor belt rises again and drives the bearing to move toward the lifting plate, thereby transporting the bearing outward. It is only necessary to place the bearings in batches above the inspection seat. Through this arrangement, the process of batch testing of bearings is realized, and the entire process is fully mechanized without the need for manual assistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a perspective view of the present invention;

[0023] Figure 2 It is a three-dimensional diagram of the inspection seat and the switching column of the present invention;

[0024] Figure 3 is a perspective view of a switching column of the present invention;

[0025] Figure 4 is a perspective view of the top plate of the present invention;

[0026] Figure 5 is a cross-sectional view of a switching column of the present invention;

[0027] Figure 6 It is a three-dimensional diagram of the lifting seat of the present invention;

[0028] Figure 7 It is a three-dimensional diagram of the detection meter head of the present invention;

[0029] Figure 8 is a bottom perspective view of the switching column of the present invention;

[0030] Figure 9 This is a three-dimensional diagram of the top plate and switching slot of the present invention

[0031] In the figure: 1. Electric slide rail assembly; 2. Inspection seat; 3. Lifting plate; 4. Support frame; 5. Conveyor belt; 6. Servo motor; 7. Screw; 8. Auxiliary rod; 9. Translation plate; 10. Switching column; 11. Reducer motor; 12. Extrusion arm; 13. Series pipe; 14. Top plate; 15. Switching slot; 16. Solenoid valve; 17. Detection head; 18. Power sleeve; 19. Docking slot; 20. Connecting plate; 21. Lifting seat; 22. Measuring head; 23. Connecting rod; 24. Top column; 25. Spiral line; 26. Pull rope; 27. Optical probe. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] like Figures 1 to 8 As shown, a bearing inner ring inner diameter detection device according to an embodiment of the present invention includes an electric slide rail group 1 and an inspection seat 2, the bottom movable end of the electric slide rail group 1 is connected to a switching column 10, an optical probe 27 and a plurality of detection heads 17 are installed at the bottom of the switching column 10, the plurality of detection heads 17 are arranged in a ring and equidistantly, a measuring head 22 is installed at the horizontal detection end of the detection head 17, a lifting seat 21 for driving the detection head 17 to move up and down is provided inside the switching column 10, the inspection seat 2 is located below the switching column 10, a translation plate 9 that can be moved is provided on the top surface of the inspection seat 2, a plurality of vertical slots are opened on the top surface of the inspection seat 2, and a liftable conveyor belt 5 is provided in the vertical slot;

[0034] The bearing to be inspected is placed flat on the inspection seat 2, and is moved by the translatory translation plate 9 to push the bearing to one side. Then the conveyor belt 5 in the vertical slot rises upward. As the conveyor belt 5 starts, the bearing is transferred to a corner of the top surface of the inspection seat 2. Then the switching column 10 is driven by the electric slide rail assembly 1 to be directly above the bearing; the electric slide rail assembly 1 includes two vertically arranged electric slide rails, which can allow the switching column 10 to move to any position on the plane. Since the bearing is circular, after the bearing is squeezed to one side of the inspection seat 2 by the translation plate 9, the space between the bearing and the inspection seat 2 is The distance is the diameter of the bearing, and the center position of the bearing is calculated to ensure that the switching column 10 can reach directly above the bearing. The optical probe 27 on the bottom surface of the switching column 10 is used to detect the bearing below. The optical probe obtains an image of the bearing and can use sub-pixel technology. Through image processing algorithms such as the least squares method to fit a circle for pixel subdivision, sub-pixel online detection of the bearing inner diameter can be achieved. Theoretically, the radius measurement accuracy can reach microns. Moreover, machine vision detection is non-contact, which avoids measurement errors or damage to the bearing caused by contact. However, when the bearing has an annular groove or other notch inside, optical detection cannot fully detect the bearing inner diameter. If the bearing inner diameter has a concave phenomenon, it cannot be detected. The annular groove in the bearing is a relatively common design, often used to fix and position bearings or other rotating parts to improve the stability and accuracy of the machine. By setting the detection head 17, the optical probe 27 is first used to detect the bearing diameter. The detection head 17 of the corresponding diameter is extended downward under the drive of the lifting base 21. In order to ensure accuracy during the bearing inner diameter detection process, different measuring heads are generally required according to the diameter of different specifications. The measuring head 22 is used for detection. After optical detection, the inner diameter of the bearing is known. At this time, the matching detection head 17 and measuring head 22 are selected. The detection head 17 can be an electronic inner diameter dial indicator. After the detection head 17 is extended downward, it is moved to the center of the bearing under the drive of the electric slide rail assembly 1. Then, the detection head 17 is allowed to continue to sink and move into the inside of the bearing. The measuring head 22 on the top of the detection head 17 will be squeezed and shortened. The value of the conversion detection head 17 will change due to the squeezing of the measuring head 22. The value is the inner diameter data of the bearing.As the test head 17 sinks, it measures readings in real time. Any changes in readings indicate the presence of an internal depression. When the inner diameter changes significantly, the change in reading plus the inner diameter data represents the inner groove data. Because a significant change in the inner diameter indicates that the measuring head 22 has moved to the inner groove, the change in reading from the test head 17 plus the original bearing inner diameter value represents the inner groove's inner diameter. This method not only enables rapid optical inspection of the bearing's inner diameter, but also enables more comprehensive detection of new inner diameter information when processing bearings with inner grooves. Furthermore, the test head 17's measurement method, based on optical measurement data and combined with mechanically measured change values, is not only highly accurate but also eliminates the need for multiple calibrations, thereby improving work efficiency.

[0035] A support frame 4 is installed on the outside of the inspection seat 2. A servo motor 6 is fixed to the top of the support frame 4. A screw 7 is fixed to the output end of the servo motor 6. The screw 7 is threadedly connected to the translation plate 9. An auxiliary rod 8 is fixed to the top of the support frame 4. The auxiliary rod 8 vertically passes through the translation plate 9 and is slidably connected to the translation plate 9.

[0036] During operation, the servo motor 6 drives the screw 7 to rotate, thereby driving the translation plate 9 to move. The moving distance of the translation plate 9 is calculated by the number of rotations of the servo motor 6, and the diameter of the bearing is then known. The auxiliary rod 8 is used to ensure the normal sliding of the translation plate 9.

[0037] The plurality of vertical slots are linearly and equidistantly arranged, a lift plate 3 is installed at the front end of the inspection seat 2, and the conveying direction of the conveyor belt 5 is perpendicular to the length direction of the lift plate 3;

[0038] During operation, after the bearing inspection is completed, the translation plate 9 is returned to its original position, and then the lifting plate 3 sinks. During the inspection process, the conveyor belt 5 is in a sinking state. After the lifting plate 3 sinks, the conveyor belt 5 rises again and drives the bearing to move toward the lifting plate 3, thereby transporting the bearing outward. It is only necessary to place the bearings in batches above the inspection seat 2. Through this setting, the process of batch testing of bearings is realized, and the entire process is fully mechanized and does not require manual assistance.

[0039] A top plate 14 is fixed to the top of the switching column 10. A vertically arranged reduction motor 11 is arranged above the top plate 14. A switching slot 15 is provided on the top surface of the top plate 14. The switching slot 15 has multiple branches. The multiple branches of the switching slot 15 are adapted to the positions of the multiple lifting seats 21. The bottom output end of the reduction motor 11 can move in the switching slot 15.

[0040] During operation, in order to improve the comprehensiveness of the detection head 17 in detecting the inner diameter of the bearing, during the detection process, the reduction motor 11 is used to drive the entire switching column 10 to rotate. During the rotation, it is necessary to ensure that the center of rotation is the detection head 17. The detection head 17 here specifically refers to the detection head 17 that is detecting the inner diameter. During the rotation, the position of the reduction motor 11 needs to be moved along the switching slot 15 to the position of the detection head 17 that is detecting the inner diameter. Figure 9 As shown, the reduction motor 11 then drives the integral top plate 14 and the switching column 10 to rotate, so that the horizontal measuring head 22 can detect one circle of the bearing inner diameter to ensure the accuracy of the detection.

[0041] The bottom output end of the reduction motor 11 is fixedly connected to a connection disk 20. The bottom of the switching slot 15 is provided with a disc-shaped translation slot. The bottom of the connection disk 20 is slidably engaged in the translation slot, and the vertical rod connecting the connection disk 20 and the reduction motor 11 is slidably engaged in the switching slot 15. A docking valve is installed at the bottom of the connection disk 20. The bottom of the translation slot is provided with multiple docking slots 19.

[0042] During operation, the bottom of the connecting disk 20 slides and is engaged in the translation groove and can move normally, while the vertical rod can only move in the switching groove 15. When the reduction motor 11 moves to the predetermined position, the docking valve is started, and the docking valve will push the protrusion downward, and the protrusion enters the switching groove 15, thereby fixing the connecting disk 20 and the top disk 14, so that the drive of the reduction motor 11 can drive the top disk 14 and the switching column 10 to rotate, and rotate with the designated detection head 17 as the center of the circle, so that the connecting disk 20 can circle around the inner diameter of the bearing to detect the inner wall of the bearing.

[0043] The top of the support frame 4 is fixed with an extrusion arm 12, which is arranged horizontally. The outer side of the extrusion arm 12 is sleeved with an extrusion pad made of elastic material.

[0044] During operation, when adjusting the position of the top plate 14, the switching column 10 is driven to move by the electric slide rail group 1, so that the side wall of the switching column 10 contacts the extrusion arm 12. At the beginning, the connecting plate 20 is located in the middle of the top plate 14 and fixed to each other. The top plate 14 and the switching column 10 are driven to rotate by the reduction motor 11 to adjust the position of the switching slot 15. When the switching column 10 and the extrusion arm 12 begin to contact, the top plate 14 and the connecting plate 20 are first contacted to be fixed. Then, with the contact and extrusion, the connecting plate 20 is moved to the specified position along the switching slot 15. After that, the two are fixed by the docking valve. Through this setting, the function of switching the connection position of the reduction motor 11 and the top plate 14 is realized, and the position of the rotating axis of the switching column 10 can be changed to ensure that any detection head 17 at the bottom can be circumferentially detected in the bearing.

[0045] The inner side of the switching column 10 is provided with a plurality of vertical slide grooves adapted to the lifting seat 21. The outer side of the switching column 10 is provided with two horizontally arranged series pipes 13, which are respectively provided at the upper and lower ends of the switching column 10. A power sleeve 18 is fixedly connected to the middle part of the switching column 10. An air pump is installed inside the power sleeve 18, and the power sleeve 18 is connected to the two series pipes 13.

[0046] During operation, the air pump in the power sleeve 18 injects air pressure toward the bottom or top of the chute through the series pipe 13. Under the air pressure injection, the lifting seat 21 can be controlled to rise or sink. For example, by injecting air pressure at the bottom of the chute and removing the air pressure above, the lifting seat 21 can be pushed upward, thereby controlling the detection head 17 below to rise. The reverse operation can control the detection head 17 to fall. Through this setting, the lifting and lowering of multiple lifting seats 21 can be controlled by simply controlling the connection relationship between the air pump and the chute.

[0047] The upper and lower ends of the lifting seat 21 are fixed with a top column 24, the series pipe 13 and the slide are connected through the solenoid valve 16, and the lifting seat 21 and the detection head 17 are fixed with a connecting rod 23;

[0048] During operation, the air pump only needs to be controlled to open and close, and the solenoid valve 16 controls whether the series pipe 13 is connected to the inside of the chute. At the same time, the solenoid valve 16 can also connect the outside world and the chute, thereby removing the internal air pressure, thereby realizing the lifting function of controlling multiple lifting seats 21. The connecting rod 23 is used to transmit the data of the detection header 17 to the lifting seat 21. The setting of the top column 24 is to allow a gap between the top and bottom of the lifting seat 21 and the chute to allow the air pressure to be input normally.

[0049] Recovery tubes are installed on both sides of the detection meter head 17, and cross bars are fixed on both sides of the measuring head 22. A motorized roller is installed in the recovery tube, and a pull rope 26 is wound around the outside of the motorized roller. The end of the pull rope 26 is sleeved on the outside of the cross bar.

[0050] During operation, the traditional internal diameter micrometer is used for detection, and the length of the detection part exceeds the length of the internal diameter, so certain operating skills are required to perform the detection. In order to ensure a purely mechanized operation process and reduce errors, the pulling rope 26 is first wound up by the electric roller, and the measuring head 22 is pulled back to ensure that the measuring head 22 can easily penetrate into the inner diameter of the bearing, thereby effectively reducing operating errors.

[0051] A spiral line 25 is fixedly connected to the middle of the top surface of the lifting seat 21, and the top of the spiral line 25 is fixedly connected to the switching column 10;

[0052] During operation, the lifting base 21 is connected via a spiral line 25 to provide power to the detection meter 17 and transmit data. The spiral line 25 has elastic potential energy, which allows the lifting base 21 to bend automatically when it rises, reducing the impact on the movement of the lifting base 21.

[0053] During operation, the bearing to be inspected is placed flat on the inspection seat 2, and is moved by the translatable translation plate 9 to push the bearing to one side. Then the conveyor belt 5 in the vertical slot rises upward. As the conveyor belt 5 starts, the bearing is transferred to a corner of the top surface of the inspection seat 2. Then, the switching column 10 is driven by the electric slide rail assembly 1 to be directly above the bearing. The electric slide rail assembly 1 includes two vertically arranged electric slide rails, which can allow the switching column 10 to be moved to any position on the plane. Since the bearing is circular, after the bearing is squeezed to one side of the inspection seat 2 by the translation plate 9, the distance between the bearing and the inspection seat 2 is the diameter of the bearing, thereby calculating the center position of the bearing to ensure that the switching column 10 can be directly above the bearing. An optical probe 27 on the bottom surface of the switching column 10 is used to detect the bearing below. The optical probe obtains an image of the bearing and can use sub-pixel technology to perform pixel subdivision through image processing algorithms such as least squares fitting circle to achieve sub-pixel online detection of the bearing inner diameter. Theoretically, the radius measurement accuracy can reach microns, and machine vision detection is non-contact, which avoids measurement errors or damage to the bearing caused by contact; however, when annular grooves or other notches are opened inside the bearing, optical detection cannot fully detect the bearing inner diameter, and it cannot detect if the bearing inner diameter has concave phenomena. The annular groove in the bearing is a relatively common design, which is often used to fix and position bearings or other rotating parts. In order to improve the stability and accuracy of the machine, the optical probe 27 is first used to detect the bearing diameter through the setting of the detection head 17. The detection head 17 of the corresponding diameter is extended downward under the drive of the lifting seat 21. In order to ensure the accuracy of the detection process of the inner diameter of the bearing, it is generally necessary to use different measuring heads 22 for detection according to the diameters of different specifications. After the optical detection, the inner diameter of the bearing is known. At this time, the adapted detection head 17 and measuring head 22 are selected. The detection head 17 can be an electronic inner diameter micrometer. After the detection head 17 is extended downward, it is moved to the center position of the bearing under the drive of the electric slide group 1. Then, the detection head 17 is allowed to continue to sink and move to the inside of the bearing. , the measuring head 22 on the top of the detection head 17 will be squeezed and shortened. During the sinking process of the detection head 17, the detection head 17 will detect the reading in real time. When the reading changes, it means that there is a concave part inside. When the inner diameter changes greatly, the change value at this time plus the inner diameter data is the data of the inner groove. Through this method, not only the fast inner diameter optical detection function of the bearing is realized, but also when processing the bearing with an inner groove in the inner diameter, the new inner diameter information can be detected more comprehensively. At the same time, the measurement method of the detection head 17 is based on the optical measurement data and the change value of the mechanical measurement. It is not only accurate and reliable, but also does not require multiple calibration of the head, thereby improving work efficiency.

[0054] The servo motor 6 drives the screw 7 to rotate, thereby driving the translation plate 9 to move. The moving distance of the translation plate 9 is calculated by the number of revolutions of the servo motor 6, and the diameter of the bearing is obtained. The auxiliary rod 8 is used to ensure the normal sliding of the translation plate 9;

[0055] When the bearing inspection is completed, the translation plate 9 is returned to its original position, and then the lifting plate 3 sinks. During the inspection process, the conveyor belt 5 is in a sinking state. After the lifting plate 3 sinks, the conveyor belt 5 rises again and drives the bearing to move toward the lifting plate 3, thereby transporting the bearing outward. It is only necessary to place the bearings in batches above the inspection seat 2. Through this setting, the process of batch testing of bearings is realized, and the entire process is fully mechanized and does not require manual assistance.

[0056] In order to improve the comprehensiveness of the detection head 17 in detecting the inner diameter of the bearing, during the detection process, the reduction motor 11 is used to drive the entire switching column 10 to rotate. During the rotation, it is necessary to ensure that the center of rotation is the detection head 17. During the rotation, the position of the reduction motor 11 needs to be moved along the switching slot 15 to the position of the detection head 17 where the inner diameter is being detected, and then rotated again, so that the horizontal measuring head 22 can detect one circle of the bearing inner diameter, ensuring the accuracy of the detection;

[0057] The bottom of the connecting disk 20 is slidably engaged in the translation groove and can move normally, while the vertical rod can only move in the switching groove 15. When the reduction motor 11 moves to the predetermined position, the docking valve is started, and the docking valve pushes the protrusion downward, and the protrusion enters the switching groove 15, thereby fixing the connecting disk 20 and the top plate 14, so that the drive of the reduction motor 11 can drive the top plate 14 and the switching column 10 to rotate, and the rotation is carried out with the designated detection head 17 as the center of the circle, so that the connecting disk 20 can circle around the inner diameter of the bearing to detect the inner wall of the bearing;

[0058] When adjusting the position of the top plate 14, the switching column 10 is driven to move by the electric slide rail group 1, so that the side wall of the switching column 10 contacts the squeezing arm 12. At the beginning, the connecting plate 20 is located in the middle of the top plate 14 and fixed to each other. The top plate 14 and the switching column 10 are driven to rotate by the reduction motor 11 to adjust the position of the switching slot 15. When the switching column 10 and the squeezing arm 12 begin to contact, the top plate 14 and the connecting plate 20 are first contacted and fixed. Then, with the contact and squeezing, the connecting plate 20 is moved to the specified position along the switching slot 15. After that, the two are fixed by the docking valve. Through this setting, the function of switching the connection position of the reduction motor 11 and the top plate 14 is realized, and the rotation axis position of the switching column 10 can be changed to ensure that any detection header 17 at the bottom can perform circumferential detection in the bearing.

[0059] The air pump in the power sleeve 18 injects air pressure toward the bottom or top of the chute through the series pipe 13. Under the air pressure injection, the lifting seat 21 can be controlled to rise or sink. For example, by injecting air pressure at the bottom of the chute and releasing the air pressure above, the lifting seat 21 can be pushed upward, thereby controlling the detection head 17 below to rise. The reverse operation can control the detection head 17 to fall. Through this arrangement, the lifting and lowering of multiple lifting seats 21 can be controlled by simply controlling the connection between the air pump and the chute.

[0060] The air pump only needs to be controlled to open and close, and the solenoid valve 16 controls whether the series pipe 13 is connected to the inside of the chute. At the same time, the solenoid valve 16 can also connect the outside world and the chute, thereby releasing the internal air pressure, thereby realizing the lifting function of controlling multiple lifting seats 21. The connecting rod 23 is used to transmit the data of the detection header 17 to the lifting seat 21. The setting of the top column 24 is to ensure that there is a gap between the top and bottom of the lifting seat 21 and the chute to allow normal air pressure input;

[0061] When using a traditional internal diameter dial indicator, the length of the testing part exceeds the length of the internal diameter, so certain operating skills are required to perform the test. In order to ensure a purely mechanical operation process and reduce errors, the pull rope 26 is first wound up by the electric roller, and the measuring head 22 is pulled back to ensure that the measuring head 22 can easily penetrate into the inner diameter of the bearing, thereby effectively reducing operating errors.

[0062] The lifting base 21 is connected via a spiral line 25 to provide power to the detection meter 17 and transmit data. The spiral line 25 has elastic potential energy, which allows the lifting base 21 to bend automatically when it rises, reducing the impact on the movement of the lifting base 21.

[0063] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the inner diameter of a bearing inner ring, characterized in that: The utility model comprises an electric slide rail group (1) and an inspection seat (2), wherein the bottom movable end of the electric slide rail group (1) is connected to a switching column (10), an optical probe (27) and a plurality of detection heads (17) are installed at the bottom of the switching column (10), the plurality of detection heads (17) are arranged in a circular and equidistant manner, a measuring head (22) is installed at the horizontal detection end of the detection head (17), a lifting seat (21) for driving the detection head (17) to be lifted and lowered is provided inside the switching column (10), the inspection seat (2) is located below the switching column (10), a translation plate (9) that can be translated is provided on the top surface of the inspection seat (2), a plurality of vertical slots are provided on the top surface of the inspection seat (2), and a conveyor belt (5) that can be lifted and lowered is provided in the vertical slots; A support frame (4) is installed on the outer side of the inspection seat (2), a servo motor (6) is fixed to the top of the support frame (4), a screw (7) is fixed to the output end of the servo motor (6), the screw (7) is threadedly connected to the translation plate (9), an auxiliary rod (8) is fixed to the top of the support frame (4), the auxiliary rod (8) vertically passes through the translation plate (9) and is slidably connected to the translation plate (9); The top of the switching column (10) is fixedly connected to a top plate (14), a vertically arranged reduction motor (11) is arranged above the top plate (14), a switching slot (15) is provided on the top surface of the top plate (14), the switching slot (15) has a plurality of branches, and the plurality of branches of the switching slot (15) are adapted to the positions of a plurality of lifting seats (21), and the bottom output end of the reduction motor (11) can move in the switching slot (15); The bottom output end of the reduction motor (11) is fixedly connected to a connection disk (20), the bottom of the switching slot (15) is provided with a disc-shaped translation slot, the bottom of the connection disk (20) is slidably engaged in the translation slot, and the vertical rod connecting the connection disk (20) and the reduction motor (11) is slidably engaged in the switching slot (15), a docking valve is installed at the bottom of the connection disk (20), and a plurality of docking slots (19) are provided at the bottom of the translation slot; The inner side of the switching column (10) is provided with a plurality of slide grooves adapted to the lifting seat (21), and the slide grooves are vertical. Two horizontally arranged series pipes (13) are installed on the outer side of the switching column (10), and the two series pipes (13) are respectively arranged at the upper and lower ends of the switching column (10). A power sleeve (18) is fixedly connected to the middle of the switching column (10), and an air pump is installed inside the power sleeve (18). The power sleeve (18) is connected to the two series pipes (13).

2. A bearing inner ring inner diameter detection device according to claim 1, characterized in that: The plurality of vertical slots are linearly and equidistantly arranged, a lift plate (3) that can be raised and lowered is installed at the front end of the inspection seat (2), and the conveying direction of the conveyor belt (5) is perpendicular to the length direction of the lift plate (3).

3. The bearing inner ring inner diameter detection device according to claim 1, characterized in that: A squeezing arm (12) is fixedly connected to the top of the support frame (4), the squeezing arm (12) is arranged horizontally, and a squeezing pad made of elastic material is sleeved on the outer side of the squeezing arm (12).

4. The device for detecting the inner diameter of a bearing inner ring according to claim 1, characterized in that: The upper and lower ends of the lifting seat (21) are fixedly connected with top columns (24), the series pipe (13) and the slide are connected through the electromagnetic valve (16), and a connecting rod (23) is fixedly connected between the lifting seat (21) and the detection head (17).

5. The device for detecting the inner diameter of a bearing inner ring according to claim 4, characterized in that: Recovery tubes are installed on both sides of the detection meter head (17), and cross bars are fixedly connected to both sides of the measuring head (22). A motorized roller is installed in the recovery tube, and a pull rope (26) is wound around the outside of the motorized roller. The end of the pull rope (26) is sleeved on the outside of the cross bar.

6. The device for detecting the inner diameter of a bearing inner ring according to claim 5, characterized in that: A spiral line (25) is fixedly connected to the middle of the top surface of the lifting seat (21), and the top of the spiral line (25) is fixedly connected to the switching column (10).

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