Bearing inner ring inner diameter detection device

Abstract

The invention belongs to the field of bearing detection, and particularly relates to a bearing inner ring inner diameter detection device, which comprises an electric slide rail group and a detection seat, the bottom moving end of the electric slide rail group is connected with a switching column, the bottom of the switching column is provided with an optical probe and a plurality of detection gauges, the plurality of detection gauges are annularly arranged at equal intervals, and the optical probe is connected with the detection seat. A measuring head is installed at the horizontal detection end of the detection gauge outfit, and a lifting seat used for driving the detection gauge outfit to ascend and descend is arranged in the switching column. By means of the method, the rapid inner diameter optical detection function of the bearing is achieved, and when the bearing with an inner groove in the inner diameter is processed, the detection accuracy of the bearing is improved. And meanwhile, the measuring method for detecting the gauge outfit is based on optical measurement data and mechanical measurement change values, so that the accuracy is reliable, the gauge outfit does not need to be calibrated for multiple times, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the field of bearing detection, and specifically relates 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 rotating mechanical bodies, reduce the friction coefficient during their movement, and support or guide the rotation or linear movement 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 the bearing inner ring. The size of the inner diameter has an important impact on the bearing's load-bearing capacity and operating stability. Traditional bearing inner diameter detection devices include an inner diameter dial indicator for manual measurement, which requires placing the dial head inside the bearing for manual measurement, and also include optical detection means, which can directly measure the inner diameter of the bearing using optical equipment.

[0004] However, when there are notches such as annular grooves inside the bearing, optical detection cannot comprehensively detect the inner diameter of the bearing. When using manual measurement, not only does it require multiple calibrations of the detection tool, but also the width of the inner groove of the bearing is relatively narrow, and traditional tools are cumbersome to measure, affecting the detection efficiency.

[0005] Therefore, 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 and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A device for detecting the inner diameter of a bearing inner ring according to the present invention includes an electric slide rail group and an inspection seat. The bottom mobile end of the electric slide rail group is connected with a switching column. An optical probe and a plurality of detection dial heads are installed at the bottom of the switching column. The plurality of detection dial heads are arranged annularly and equidistantly. A measuring head is installed at the horizontal detection end of the detection dial head. An elevating seat for driving the detection dial head to rise and fall is arranged inside the switching column. The inspection seat is located below the switching column. A translatable translation plate is arranged on the top surface of the inspection seat. A plurality of vertical grooves are opened on the top surface of the inspection seat, and an elevating conveyor belt is arranged in the vertical grooves. Place the bearing to be detected flat on the inspection seat and move it through the translatable translation plate. Push the bearing to one side. Then, the conveyor belt in the vertical groove rises. With the start of the conveyor belt, the bearing is transferred to a corner of the top surface of the inspection seat. After that, the switching column moves to directly above the bearing driven by the electric slide rail group. The electric slide rail group includes two perpendicularly arranged electric slide rails, enabling the switching column to move to any position on the plane. Since the bearing is circular, after squeezing the bearing against one side of the inspection seat by the translation plate, the distance between the bearing and the inspection seat is the diameter of the bearing, thereby calculating the center position of the bearing to ensure that the switching column can reach directly above the bearing. Use the optical probe on the bottom surface of the switching column to detect the bearing below. The optical probe acquires the image of the bearing. The sub-pixel technology can be utilized, and through image processing algorithms such as least squares circle fitting for pixel subdivision, the sub-pixel on-line detection of the bearing inner diameter can be achieved. The theoretical radius measurement accuracy can reach micrometers, and the machine vision detection is non-contact, which avoids the measurement errors that may be caused by contact or damage to the bearing. Through the setting of the detection head, first use the optical probe to detect the bearing diameter. The detection head corresponding to the diameter extends downward driven by the lifting seat. In the process of detecting the inner diameter of the bearing, to ensure accuracy, generally different measuring heads need to be used for detection according to different diameters. After the optical detection, the inner diameter of the bearing is already known. At this time, select the appropriate detection head and measuring head. The detection head can be an electronic internal diameter dial indicator. After the detection head extends downward, it moves to the center position of the bearing driven by the electric slide rail group. Then, let the detection head continue to sink and move into the bearing. The measuring head at the top of the detection head will be compressed and shortened. During the sinking process of the detection head, the detection head will detect the reading in real time. When the reading changes, it indicates 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 rapid inner diameter optical detection function of the bearing is realized, but also when dealing with bearings with inner grooves in the inner diameter, new inner diameter information can be detected more comprehensively. At the same time, the measurement method of the detection head is based on the optically measured data plus the change value of the mechanical measurement. It is not only accurate and reliable, but also does not require multiple calibrations of the head, thus improving the work efficiency.

[0008] Preferably, a support frame is installed on the outside of the inspection seat. A servo motor is fixedly connected to the top of the support frame. The output end of the servo motor is fixedly connected to a screw rod. The screw rod is threadedly connected to the translation plate. An auxiliary rod is fixedly connected to the top of the support frame. The auxiliary rod vertically passes through the translation plate and is slidably connected to the translation plate. The servo motor drives the screw rod to rotate, thereby driving the translation plate to move. The moving distance of the translation plate is calculated by the number of turns of the servo motor rotation, and then the diameter of the bearing is known. The auxiliary rod is used to ensure the normal sliding of the translation plate.

[0009] Preferably, a plurality of the vertical grooves are arranged linearly and equidistantly. A liftable lifting plate 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 lifting plate. After the bearing is detected, the translation plate is returned to its original position, and then the lifting plate sinks. During the detection process, the conveyor belt is in a sunken state. After the lifting plate sinks, the conveyor belt rises again and drives the bearing to move towards the direction of the lifting plate, so as to transport the bearing outwards. It only needs to place the bearings above the inspection seat in batches. Through this setting, the process of batch detecting bearings is realized, and the whole process is fully mechanized without manual assistance.

[0010] 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 groove is formed on the top surface of the top plate. The switching groove has multiple branches, and the multiple branches of the switching groove are adapted to the positions of multiple lifting seats. The bottom output end of the reduction motor can move in the switching groove. In order to improve the comprehensiveness of the detection head detecting the inner diameter of the bearing, during the detection process, the reduction motor is used to drive the entire switching column to rotate. When rotating, it is necessary to ensure that the center of rotation is the detection head. When rotating, the position of the reduction motor needs to be moved along the switching groove to the position of the detection head that is detecting the inner diameter, and then rotate, so that the horizontal measuring head can detect the inner diameter of the bearing in a circle, ensuring the accuracy of the detection.

[0011] Preferably, the bottom output end of the reduction motor is fixedly connected to a connection disk. A disk-shaped translation groove is formed at the bottom of the switching groove. The bottom of the connection disk is slidably clamped in the translation groove, and the vertical rod connecting the connection disk and the reduction motor is slidably clamped in the switching groove. A docking valve is installed at the bottom of the connection disk. A plurality of docking grooves are formed at the bottom of the translation groove. The bottom of the connection disk can move normally when slidably clamped in the translation groove, while the vertical rod can only move in the switching groove. When the reduction motor moves to a predetermined position, the docking valve is started, and the docking valve will push out a convex block downward. The convex block enters the switching groove, thereby fixing the connection disk and the top plate, so that the drive of the reduction motor can drive the top plate and the switching column to rotate, and rotate around the specified detection head as the center, so that the connection disk can circle around the inner diameter of the bearing to detect the inner wall of the bearing.

[0012] Preferably, an extrusion arm is fixedly connected to the top of the support frame. The extrusion arm is horizontally arranged, and an extrusion pad made of elastic material is sleeved on the outer side of the extrusion arm. When adjusting the position of the adjustment 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 extrusion arm. At the beginning, the connection 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 groove. When the switching column and the extrusion arm start to contact, the fixation between the top plate and the connection plate is first contacted. Then, with the contact extrusion, the connection plate is moved along the switching groove to the designated position. After that, the two are fixed through the docking valve. Through this setting, the function of switching the connection position between the reduction motor and the top plate is realized, and the rotation axis position of the switching column can be changed to ensure that any detection meter head at the bottom can perform circumferential detection in the bearing.

[0013] Preferably, a plurality of chutes adapted to the lifting seats are formed inside the switching column. The chutes are vertical. Two horizontally arranged series pipes are installed on the outer side of the switching column. The two series pipes are respectively arranged at the upper and lower ends of the switching column. A power sleeve is fixedly connected to the middle of the switching column. An air pump is installed inside the power sleeve. The power sleeve is communicated with the two series pipes. The air pump in the power sleeve injects air pressure towards the bottom or the top of the chutes through the series pipes. Under the injection of air pressure, the lifting seats can be controlled to rise or fall. For example, when injecting air pressure at the bottom of the chutes and discharging the air pressure above at the same time, the lifting seats can be pushed up, so as to control the lower detection meter head to rise. Reverse operation can control the detection meter head to descend. Through this setting, only by controlling the connection relationship between the air pump and the chutes, the lifting conditions of multiple lifting seats can be controlled.

[0014] Preferably, top columns are fixedly connected to both the upper and lower ends of the lifting seat. The series pipes and the chutes are communicated through solenoid valves. A connecting rod is fixedly connected between the lifting seat and the detection meter head. The air pump only needs to control the opening and closing. The solenoid valve controls whether the series pipes are communicated with the inside of the chutes. At the same time, the solenoid valve can also communicate the outside and the chutes to discharge the internal air pressure, thereby realizing the function of controlling the lifting of multiple lifting seats. The connecting rod is used to transmit the data of the detection meter head to the lifting seat. The setting of the top columns is to make there be a gap between the top and the bottom of the lifting seat and the chutes, so that the air pressure can be normally input.

[0015] Preferably, recovery pipes are installed on both sides of the detection meter head. Cross bars are fixedly connected to both sides of the measuring head. An electric roller is installed in the recovery pipe. A pulling rope is wound around the outer side of the electric roller. The end of the pulling rope is sleeved on the outer side of the cross bar. When a traditional inside diameter dial gauge is used for detection and the length of the detection part exceeds the inside diameter length, certain operation skills are required for detection. To ensure a fully mechanized operation process and reduce errors, the electric roller first winds up the pulling rope to pull the measuring head backward, ensuring that the measuring head can easily penetrate into the bearing inner diameter, thereby effectively reducing operation errors.

[0016] Preferably, a spiral line is fixedly connected to the middle of the top surface of the lifting seat. The top of the spiral line is fixedly connected to the switching column. By connecting the lifting seat through the spiral line, electrical energy and data are provided to the detection meter head. The spiral line has elastic potential energy, allowing it to bend by itself when the lifting seat rises, reducing the influence on the movement of the lifting seat.

[0017] The beneficial effects of the present invention are as follows: 1. For the bearing inner ring inner diameter detection device of the present invention, through the setting of the detection meter head, the bearing diameter is first detected using an optical probe. The detection meter head corresponding to the diameter is extended downward under the drive of the lifting seat. To ensure accuracy during the detection process of the bearing inner diameter, different measuring heads are generally required for detection according to different diameter specifications. After optical detection, the inner diameter of the bearing is already known. At this time, a suitable detection meter head and measuring head are selected. The detection meter head can be an electronic inside diameter dial gauge. After the detection meter 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 meter head continues to sink, moving into the bearing. The measuring head at the top of the detection meter head will be compressed and shortened. During the sinking process of the detection meter head, the detection meter head will detect and read the data in real time. When the reading changes, it indicates that there is a concave part inside. When the inner diameter changes significantly, the changed value plus the inner diameter data is the data of the inner groove. Through this method, not only the function of quickly optically detecting the inner diameter of the bearing is realized, but also when dealing with bearings with inner grooves in the inner diameter, 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 data measured optically, plus the changed value measured mechanically. It is not only reliable in accuracy, but also does not require multiple calibrations of the meter head, thereby improving work efficiency.

[0018] 2. The inner diameter detection device of the bearing described in the present invention drives the screw to rotate through a servo motor, and then drives the translation plate to move. The moving distance of the translation plate is calculated by the number of turns of the servo motor, and then the diameter of the bearing is obtained. The auxiliary rod is used to ensure the normal sliding of the translation plate. After the bearing is detected, the translation plate is returned to its original position, and then the lifting plate sinks. During the detection process, the conveyor belt is in a sunken state. After the lifting plate sinks, the conveyor belt rises again and drives the bearing to move towards the direction of the lifting plate, so as to transport the bearing outwards. It only needs to place the bearings above the inspection seat in batches. Through this setting, the process of batch detection of bearings is realized, and the whole process is fully mechanized without manual assistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of the present invention; Figure 2 is a perspective view of the inspection seat and the switching column of the present invention; Figure 3 is a perspective view of the switching column of the present invention; Figure 4 is a perspective view of the top plate of the present invention; Figure 5 is a cross-sectional view of the switching column of the present invention; Figure 6 is a perspective view of the lifting seat of the present invention; Figure 7 is a perspective view of the detection head of the present invention; Figure 8 is a bottom perspective view of the switching column of the present invention; Figure 9 is a perspective view of the top plate and the switching groove of the present invention In the figure: 1, electric slide rail group; 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, reduction motor; 12, extrusion arm; 13, series pipe; 14, top plate; 15, switching groove; 16, solenoid valve; 17, detection head; 18, power sleeve; 19, docking groove; 20, connecting plate; 21, lifting seat; 22, measuring head; 23, connecting rod; 24, top column; 25, spiral line; 26, pulling rope; 27, optical probe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0022] As Figures 1 to 8As shown in the figure, 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. A switching column 10 is connected to the bottom mobile end of the electric slide rail group 1. 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 an annular equidistant manner. A measuring head 22 is installed at the horizontal detection end of the detection head 17. An elevating seat 21 for driving the detection head 17 to move up and down is arranged inside the switching column 10. The inspection seat 2 is located below the switching column 10. A translatable translation plate 9 is arranged on the top surface of the inspection seat 2. A plurality of vertical grooves are opened on the top surface of the inspection seat 2. A conveyer belt 5 that can move up and down is arranged in the vertical grooves; Place the bearing to be detected flat on the inspection seat 2 and move it through the translatable translation plate 9 to push the bearing to one side. Then, the conveyor belt 5 in the vertical groove rises. With the start of the conveyor belt 5, the bearing is transferred to a corner of the top surface of the inspection seat 2. After that, the switching column 10 moves to directly above the bearing driven by the electric slide rail group 1. The electric slide rail group 1 includes two vertically arranged electric slide rails, so that the switching column 10 can be moved to any position on the plane. Since the bearing is circular, after the bearing is squeezed against 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 reach directly above the bearing. Use the optical probe 27 on the bottom surface of the switching column 10 to detect the bearing below. The optical probe obtains the image of the bearing. The sub-pixel technology can be used, and through image processing algorithms, such as the least squares method to fit a circle for pixel subdivision, to realize the sub-pixel on-line detection of the bearing inner diameter. The theoretical radius measurement accuracy can reach the micron level, and the machine vision detection is non-contact, which avoids the measurement error or damage to the bearing that may be caused by contact. However, when there are grooves such as annular grooves inside the bearing, the optical detection cannot comprehensively detect the bearing inner diameter, and it cannot detect if there are concave phenomena in the bearing inner diameter. The annular groove in the bearing is a relatively common design, often used to fix and position the bearing or other rotating parts to improve the stability and accuracy of the machine. Through the setting of the detection head 17, first use the optical probe 27 to detect the bearing diameter, and the detection head 17 corresponding to the diameter extends downward driven by the lifting seat 21. In order to ensure the accuracy of the detection process of the bearing inner diameter, generally different measuring heads 22 need to be used for detection according to different specifications of the diameter. After the optical detection, the inner diameter of the bearing is already known. At this time, select the appropriate detection head 17 and measuring head 22. The detection head 17 can be an electronic internal diameter dial indicator. After the detection head 17 extends downward, it moves to the center position of the bearing driven by the electric slide rail group 1. Then, let the detection head 17 continue to sink until the detection head 17 moves inside the bearing. The measuring head 22 at the top of the detection head 17 will be squeezed and shortened, and the value of the conversion detection head 17 will change due to the extrusion of the measuring head 22. The value is the inner diameter data of the bearing;During the detection of the sinking of the detection head 17, the detection head 17 will detect the readings in real time. When the readings change, it indicates that there is a sunken 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. Because when the inner diameter changes greatly, it means that the measuring head 22 has moved to the position of the inner groove. Therefore, the change value of the detection head 17 plus the original bearing inner diameter value is the inner diameter value of the inner groove. Through this method, not only the function of quickly detecting the inner diameter of the bearing optically is realized, but also when dealing with bearings with inner grooves in the inner diameter, new inner diameter information can be detected more comprehensively. At the same time, the measuring method of the detection head 17 is based on the optically measured data plus the change value of the mechanical measurement. It is not only reliable in accuracy, but also does not require multiple calibrations of the head, thus improving the work efficiency.

[0023] A support frame 4 is installed on the outside of the inspection seat 2. A servo motor 6 is fixedly connected to the top of the support frame 4. The output end of the servo motor 6 is fixedly connected to a screw rod 7. The screw rod 7 is threadedly connected to a translation plate 9. An auxiliary rod 8 is fixedly connected 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. During operation, the servo motor 6 drives the screw rod 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 turns of the rotation of the servo motor 6, and then the diameter of the bearing is known. The auxiliary rod 8 is used to ensure the normal sliding of the translation plate 9.

[0024] A plurality of the vertical grooves are arranged linearly and equidistantly. A liftable lifting plate 3 is installed at the front end of the inspection seat 2. The conveying direction of the conveyor belt 5 is perpendicular to the length direction of the lifting plate 3. During operation, after the bearing is detected, the translation plate 9 is returned to its original position. Then the lifting plate 3 sinks. During the detection process, the conveyor belt 5 is in a sunken state. After the lifting plate 3 sinks, the conveyor belt 5 rises again and drives the bearing to move towards the direction of the lifting plate 3, thereby transporting the bearing outwards. It is only necessary to place the bearings batchwise above the inspection seat 2. Through this setting, the process of batch detecting the bearings is realized, and the whole process is fully mechanized without manual assistance.

[0025] A top plate 14 is fixedly connected to the top of the switching column 10. A vertical reduction motor 11 is arranged above the top plate 14. A switching groove 15 is formed on the top surface of the top plate 14. The switching groove 15 has a plurality of branches. The plurality of branches of the switching groove 15 are adapted to the positions of a plurality of lifting seats 21. The bottom output end of the reduction motor 11 can move in the switching groove 15. During operation, in order to improve the comprehensiveness of the detection head 17 for 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. When rotating, it is necessary to ensure that the center of rotation is the detection head 17. Here, the detection head 17 specifically refers to the detection head 17 that is detecting the inner diameter. When rotating, the position of the reduction motor 11 needs to be moved along the switching groove 15 to the position of the detection head 17 that is detecting the inner diameter, as Figure 9 shown. After that, the reduction motor 11 is used to drive the overall top plate 14 and the switching column 10 to rotate, so that the horizontal measuring head 22 can detect one circle of the inner diameter of the bearing, ensuring the accuracy of the detection.

[0026] A connecting disk 20 is fixedly connected to the bottom output end of the reduction motor 11. A disk-shaped translation groove is formed at the bottom of the switching groove 15. The bottom of the connecting disk 20 is slidably clamped in the translation groove, and the vertical rod connecting the connecting disk 20 and the reduction motor 11 is slidably clamped in the switching groove 15. A docking valve is installed at the bottom of the connecting disk 20, and a plurality of docking grooves 19 are formed at the bottom of the translation groove; During operation, the bottom of the connecting disk 20 can slide and be clamped in the translation groove and move normally, while the vertical rod can only move in the switching groove 15. When the reduction motor 11 moves to a predetermined position, the docking valve is started. The docking valve will push out a convex block downward, and the convex block enters the switching groove 15, thereby fixing the connecting disk 20 and the top plate 14, enabling the drive of the reduction motor 11 to drive the top plate 14 and the switching column 10 to rotate, and rotating around the specified detection head 17 as the center, so that the connecting disk 20 can surround one circle in the inner diameter of the bearing to detect the inner wall of the bearing.

[0027] An extrusion arm 12 is fixedly connected to the top of the support frame 4. The extrusion arm 12 is horizontally arranged, and an extrusion pad made of an elastic material is sleeved outside the extrusion arm 12; During operation, when adjusting the position of the top plate 14, the switching column 10 is driven to move through 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 disk 20 is located in the middle of the top plate 14 and is fixed to each other. The reduction motor 11 is used to drive the top plate 14 and the switching column 10 to rotate to adjust the position of the switching groove 15. When the switching column 10 and the extrusion arm 12 start to contact, the fixation between the top plate 14 and the connecting disk 20 is first released. Then, with the contact and extrusion, the connecting disk 20 is moved along the switching groove 15 to a specified position, and then the two are fixed through the docking valve. Through this setting, the function of switching the connection position between 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 head 17 at the bottom can perform a circumferential detection in the bearing.

[0028] A plurality of chutes adapted to the lifting seat 21 are provided inside the switching column 10. The chutes are vertical. Two horizontally arranged series pipes 13 are installed outside the switching column 10. 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. An air pump is installed inside the power sleeve 18. The power sleeve 18 is communicated with the two series pipes 13; During operation, the air pump in the power sleeve 18 injects air pressure towards the bottom or the top of the chute through the series pipe 13. Under the injection of air pressure, the lifting seat 21 can be controlled to rise or sink. For example, by injecting air pressure at the bottom of the chute and discharging the air pressure above at the same time, the lifting seat 21 can be pushed upward, thereby controlling the detection meter head 17 below to rise. Reverse operation can control the detection meter head 17 to descend. Through this setting, only by controlling the connection relationship between the air pump and the chute, the lifting conditions of multiple lifting seats 21 can be controlled.

[0029] Top columns 24 are fixedly connected to both the upper and lower ends of the lifting seat 21. The series pipe 13 is communicated with the chute through a solenoid valve 16. A connecting rod 23 is fixedly connected between the lifting seat 21 and the detection meter head 17; During operation, the air pump only needs to control the opening and closing. The solenoid valve 16 controls whether the series pipe 13 is communicated with the inside of the chute. At the same time, the solenoid valve 16 can also communicate the outside and the chute, thereby discharging the internal air pressure. Furthermore, the lifting function of multiple lifting seats 21 is controlled. The connecting rod 23 is used to transmit the data of the detection meter head 17 to the lifting seat 21. The top column 24 is provided to allow a gap between the top and the bottom of the lifting seat 21 and the chute, so that the air pressure can be normally input.

[0030] Recovery pipes are installed on both sides of the detection meter head 17. Cross bars are fixedly connected to both sides of the measuring head 22. Electric rollers are installed in the recovery pipes. A pulling rope 26 is wound around the outside of the electric rollers. The end of the pulling rope 26 is sleeved outside the cross bar; During operation, when a traditional inside diameter dial gauge is used for detection and the length of the detection part exceeds the inside diameter length, certain operation skills are required for detection. In order to ensure a pure mechanized operation process and reduce errors, the electric roller first winds up the pulling rope 26 to pull the measuring head 22 backward, ensuring that the measuring head 22 can easily penetrate into the bearing inside diameter, thereby effectively reducing operation errors.

[0031] A spiral line 25 is fixedly connected to the middle of the top surface of the lifting seat 21. The top of the spiral line 25 is fixedly connected to the switching column 10; During operation, the lifting seat 21 is connected through the spiral line 25, thereby providing electrical energy and transmitting data to the detection meter head 17. The spiral line 25 has elastic potential energy, allowing it to bend automatically when the lifting seat 21 rises, reducing the influence on the movement of the lifting seat 21.

[0032] During operation, the bearing to be detected is placed flat on the inspection seat 2 and moved through the translatable translation plate 9 to push the bearing to one side. Then, the conveyor belt 5 in the vertical groove rises. With the start of the conveyor belt 5, the bearing is transferred to a corner of the top surface of the inspection seat 2. After that, the switching column 10 moves to directly above the bearing driven by the electric slide rail group 1. The electric slide rail group 1 includes two vertically arranged electric slide rails, enabling the switching column 10 to move to any position on the plane. Since the bearing is circular, after the bearing is squeezed against 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 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. The sub-pixel technology can be utilized, and through image processing algorithms such as least squares circle fitting for pixel subdivision, the sub-pixel on-line detection of the bearing inner diameter can be realized. The theoretical radius measurement accuracy can reach the micron level, and machine vision detection is non-contact, which avoids measurement errors or damage to the bearing caused by contact. However, when there are notches such as annular grooves inside the bearing, optical detection cannot comprehensively detect the bearing inner diameter, and it cannot detect if there are concave phenomena in the bearing inner diameter. The annular groove inside the bearing is a relatively common design, often used for fixing and positioning the bearing or other rotating components to improve the stability and accuracy of the machine. Through the setting of the detection head 17, first, the optical probe 27 is used to detect the bearing diameter. The detection head 17 corresponding to the diameter extends downward driven by the lifting seat 21. To ensure accuracy in the detection process of the bearing inner diameter, generally, different measuring heads 22 are used for detection according to different diameter specifications. After the optical detection, the inner diameter of the bearing is already known. At this time, the appropriate detection head 17 and measuring head 22 are selected. The detection head 17 can be an electronic internal diameter dial indicator. After the detection head 17 extends downward, it moves to the center position of the bearing driven by the electric slide rail group 1. Then, the detection head 17 continues to sink, moving into the bearing. The measuring head 22 at the top of the detection head 17 will be compressed and shortened. During the sinking process of the detection head 17, the detection head 17 will detect and read the data in real time. When the reading changes, it indicates that there is a concave part inside. When the inner diameter changes significantly, the changed value plus the inner diameter data is the data of the inner groove. Through this method, not only the rapid inner diameter optical detection function of the bearing is realized, but also when dealing with bearings with inner grooves in the inner diameter, 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 plus the changed value of the mechanical measurement. It is not only reliable in accuracy but also does not require multiple calibrations of the head, thus improving the work efficiency. The servo motor 6 drives the screw rod 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 then the diameter of the bearing is obtained. The auxiliary rod 8 is used to ensure the normal sliding of the translation plate 9; After the bearing is detected, the translation plate 9 is returned to its original position. Then the lifting plate 3 sinks. During the detection process, the conveyor belt 5 is in a sunken state. After the lifting plate 3 sinks, the conveyor belt 5 rises again and drives the bearing to move towards the direction of the lifting plate 3, so as to transport the bearing outwards. It only needs to place the bearings in batches above the inspection seat 2. Through this setting, the process of batch detecting the bearings is realized, and the whole process is fully mechanized without manual assistance; 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 drives the entire switching column 10 to rotate. When rotating, it is necessary to ensure that the center of rotation is the detection head 17. When rotating, the position of the reduction motor 11 needs to be moved along the switching groove 15 to the position of the detection head 17 that is detecting the inner diameter, and then rotate, so that the horizontal measuring head 22 can detect the inner diameter of the bearing for one circle to ensure the detection accuracy; The bottom of the connecting disk 20 is slidably clamped 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. The docking valve will push out the convex block downward, and the convex block 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 around the specified detection head 17 as the center, so that the connecting disk 20 can surround the inner diameter of the bearing for one circle to detect the inner wall of the bearing; When adjusting the position of the top disk 14, the electric slide rail group 1 drives the switching column 10 to move, so that the side wall of the switching column 10 contacts the extrusion arm 12. At the beginning, the connecting disk 20 is located in the middle of the top disk 14 and is fixed to each other. The reduction motor 11 drives the top disk 14 and the switching column 10 to rotate to adjust the position of the switching groove 15. When the switching column 10 and the extrusion arm 12 start to contact, first release the fixation between the top disk 14 and the connecting disk 20, and then as the contact is squeezed, the connecting disk 20 moves along the switching groove 15 to the specified position, and then the two are fixed by the docking valve. Through this setting, the function of switching the connection position between the reduction motor 11 and the top disk 14 is realized, and the rotation axis position of the switching column 10 can be changed to ensure that any detection head 17 at the bottom can surround and detect in the bearing; The air pump in the power set 18 injects air pressure towards the bottom or top of the chute through the series pipe 13. Under the injection of air pressure, the lifting seat 21 can be controlled to rise or sink. For example, by injecting air pressure at the bottom of the chute and discharging the air pressure above at the same time, the lifting seat 21 can be pushed upward, thereby controlling the lower detection meter head 17 to rise. Reverse operation can control the detection meter head 17 to descend. Through this setting, only by controlling the connection relationship between the air pump and the chute, the lifting conditions of multiple lifting seats 21 can be controlled; The air pump only needs to control the opening and closing. 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 and the chute, thereby discharging the internal air pressure, and then realizing the function of controlling the lifting of multiple lifting seats 21. The connecting rod 23 is used to transmit the data of the detection meter head 17 to the lifting seat 21. The setting of the top column 24 is to make there be a gap between the top and bottom of the lifting seat 21 and the chute, so that the air pressure can be normally input; When the traditional internal diameter dial indicator is in use, and the length of the detection part exceeds the internal diameter length, certain operation skills are required for detection. In order to ensure a pure mechanized operation process and reduce errors, the electric roller first winds up and pulls the pulling rope 26 to pull the measuring head 22 backward, ensuring that the measuring head 22 can easily penetrate into the bearing inner diameter, thereby effectively reducing operation errors; The lifting seat 21 is connected through the spiral line 25, thereby providing electrical energy and transmitting data to the detection meter head 17. The spiral line 25 has elastic potential energy, so that it can bend by itself when the lifting seat 21 rises, reducing the influence on the movement of the lifting seat 21.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A bearing inner ring inner diameter detection device, characterized in that: The invention comprises an electric slide rail assembly (1) and an inspection seat (2), wherein the bottom movable end of the electric slide rail assembly (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-shaped manner with equal spacing, 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 arranged 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 arranged 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 lifting conveyor belt (5) that can be lifted and lowered is arranged in the vertical slots.

2. A bearing inner ring inner diameter detection device according to claim 1, characterized in that: A support frame (4) is installed on the outer side of the inspection seat (2), a servo motor (6) is fixedly connected to the top of the support frame (4), a screw rod (7) is fixedly connected to the output end of the servo motor (6), the screw rod (7) is threadedly connected to the translation plate (9), an auxiliary rod (8) is fixedly connected 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).

3. A bearing inner ring inner diameter detection device according to claim 2, 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).

4. A bearing inner ring inner diameter detection device according to claim 3, characterized in that: A top plate (14) is fixedly connected 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 a plurality of branches, 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) is capable of moving in the switching slot (15).

5. A bearing inner ring inner diameter detection device according to claim 4, characterized in that: A connecting disk (20) is fixedly connected to the bottom output end of the reduction motor (11), a disc-shaped translation groove is provided at the bottom of the switching groove (15), the bottom of the connecting disk (20) is slidably engaged in the translation groove, and a vertical rod connecting the connecting disk (20) and the reduction motor (11) is slidably engaged in the switching groove (15), a docking valve is installed at the bottom of the connecting disk (20), and a plurality of docking grooves (19) are provided at the bottom of the translation groove.

6. A bearing inner ring inner diameter detection device according to claim 5, 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).

7. A bearing inner ring inner diameter detection device according to claim 6, characterized in that: A plurality of slide grooves adapted to the lifting seat (21) are provided on the inner side of the switching column (10), the slide grooves being vertical. Two horizontally arranged series pipes (13) are installed on the outer side of the switching column (10), the two series pipes (13) being arranged at the upper and lower ends of the switching column (10), respectively. A power sleeve (18) is fixedly connected to the middle 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).

8. A bearing inner ring inner diameter detection device according to claim 7, characterized in that: The upper and lower ends of the lifting seat (21) are both fixedly connected with top columns (24); the series pipe (13) and the slide slot are connected via a solenoid valve (16); and a connecting rod (23) is fixedly connected between the lifting seat (21) and the detection meter head (17).

9. A bearing inner ring inner diameter detection device according to claim 8, characterized in that: Recovery pipes are installed on both sides of the detection meter head (17), cross bars are fixedly connected to both sides of the measuring head (22), an electric roller is installed in the recovery pipe, a pulling rope (26) is wound around the outside of the electric roller, and the end of the pulling rope (26) is sleeved on the outside of the cross bar.

10. A bearing inner ring inner diameter detection device according to claim 9, 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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