An ultrasonic flaw detection device for bearing steel balls

Abstract

The present invention relates to an ultrasonic flaw detection device for a bearing steel ball applied to the field of ultrasonic flaw detection. The present invention adopts a conveyor belt to drive the steel ball to move to the position of a low-frequency ultrasonic flaw detector and a high-frequency ultrasonic flaw detector for lateral rotation flaw detection and axial rotation flaw detection, thereby increasing the detection posture of the steel ball when rotating, reducing the ultrasonic flaw detection blind spot when the steel ball rotates, improving the accuracy of steel ball flaw detection, and improving the transmission efficiency of the steel ball between the low-frequency ultrasonic flaw detector and the high-frequency ultrasonic flaw detector. The steel ball is also flaw detected by setting a low-frequency ultrasonic flaw detector and a high-frequency ultrasonic flaw detector of two frequencies. The low-frequency ultrasonic flaw detector has good penetration ability and can detect deeper defects of the steel ball. The high-frequency ultrasonic flaw detector has high resolution and can detect smaller defects more accurately, thereby further improving the accuracy of steel ball flaw detection.

Description

Technical Field

[0001] The invention relates to a flaw detection device, in particular to an ultrasonic flaw detection device for a bearing steel ball applied in the field of ultrasonic flaw detection. Background Art

[0002] The ultrasonic flaw detection device for steel balls uses an ultrasonic probe to detect internal defects of steel balls. When ultrasonic waves pass through the steel balls, if they encounter defects, they will be reflected back. By analyzing the reflected waves, the location and size of the defects can be determined.

[0003] The steel ball ultrasonic flaw detection device generally includes multiple detection stations for driving the steel ball to rotate. An ultrasonic probe is installed on the detection station to detect the steel ball. Then the steel ball is grabbed by a robotic arm and placed on the station for detection. After the detection is completed, the robotic arm takes out the steel ball.

[0004] The conveying efficiency of using a robotic arm to grab the steel ball is low, and the rotation state of the steel ball is single, which will lead to poor detection effect in some areas of the steel ball. Therefore, the rotation state of the steel ball can be improved to improve the flaw detection effect of the steel ball. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the conveying efficiency of using a robotic arm to grab the steel ball is low, and at the same time, the rotation state of the steel ball is single, which will lead to poor detection effect in some areas of the steel ball.

[0006] To solve the above problems, the present invention provides an ultrasonic flaw detection device for bearing steel balls, comprising a flaw detection box, one end of the flaw detection box is fixedly connected to a feeding pipe, and two sides of the bottom end of the feeding pipe are respectively provided with a right slot and a left slot, one end of the flaw detection box close to the feeding pipe is fixedly connected to a vertical plate, one end of the vertical plate is fixedly connected to a feeding push rod, the telescopic end of the feeding push rod is fixedly connected to a side top block, one end of the side top block is located at the inner side of the right slot and is slidably connected thereto, and the flaw detection box is located at an end of the feeding push rod away from the side top block, and a lower left conveyor located at the lower left corner of the flaw detection box, a lower right conveyor located at the lower right corner of the flaw detection box, an upper left conveyor located at the upper left corner of the flaw detection box, and an upper right conveyor located at the upper right corner of the flaw detection box are installed, the lower left conveyor, the lower right conveyor, the upper left conveyor, and the upper right conveyor are all composed of a base plate, one end of the base plate is rotatably connected to two rotating shafts, one end of the rotating shaft is fixedly connected to a driving wheel, and a conveying Belt, one end of the substrate is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to one of the rotating shafts, the bottom end of the flaw detection box is fixedly connected to a low-frequency ultrasonic flaw detector and a high-frequency ultrasonic flaw detector, the low-frequency ultrasonic flaw detector and the high-frequency ultrasonic flaw detector are located between the lower left conveyor and the lower right conveyor, the flaw detection box is located at the end of the lower left conveyor away from the feed pipe and is fixedly connected to a discharge pipe, a lower slot is provided between the bottom end of the discharge pipe and the flaw detection box, a side slot is provided on the side wall at one end of the discharge pipe, the side slot and the left slot are respectively located between the two ends of the lower left conveyor, the lower right conveyor, the upper left conveyor and the upper right conveyor, the end of the flaw detection box close to the lower slot is fixedly connected to a lifting push rod, the telescopic end of the lifting push rod is fixedly connected to an upper top block, the upper top block is located on the inner side of the lower slot and is slidably connected thereto, and also includes a rotation control module, the rotation control module is electrically connected to the lower left conveyor, the lower right conveyor, the upper left conveyor and the upper right conveyor.

[0007] As a further improvement of the present application, the lower left conveyor, the lower right conveyor, the upper left conveyor and the upper right conveyor are distributed in a rectangular shape.

[0008] As a further improvement of the present application, the inner walls of the left groove and the side groove are fixedly connected with a depth tube, one end of the depth tube extends between the lower left conveyor, the lower right conveyor, the upper left conveyor and the upper right conveyor, and one end of the depth tube is provided with a accommodating groove. Through the above arrangement, the depth tube can guide the steel balls.

[0009] As a further improvement of the present application, the outer wall of the flaw detection box is fixedly connected to a storage box, a return pipe is fixedly connected to the storage box near the bottom of the storage box, and a branch pipe is fixedly connected between the bottom end of the return pipe and the storage box.

[0010] As another improvement of the present application, a liquid pump is fixedly connected to the side wall of the storage box, and the output end and input end of the liquid pump are fixedly connected to delivery pipes, one of the delivery pipes is located on the inner side of the flaw detection box, and the other delivery pipe is located on the inner side of the flaw detection box.

[0011] As another improved supplement of the present application, the interiors of the flaw detection box and the storage box are filled with coupling agent, a filter is installed inside the storage box, and the top of the return pipe is higher than the low-frequency ultrasonic flaw detector and the high-frequency ultrasonic flaw detector.

[0012] As another improved supplement of the present application, the inner walls of the flaw detection box close to the multiple substrates are fixedly connected with an adjusting motor and a support plate, one end of the substrate is fixedly connected with a connecting plate, and the connecting plate and the support plate are slidably connected.

[0013] As another improvement of the present application, the output end of the regulating motor is fixedly connected to a screw rod, which passes through the connecting plate and is threadedly connected thereto.

[0014] As another improvement of the present application, the sides of the multiple conveyor belts that are close to each other are all set to be arc-shaped; through the above-mentioned setting, the supporting area between the conveyor belts and the steel balls can be increased, so that the conveyor belts can better drive the steel balls to rotate.

[0015] In summary, the present invention uses a conveyor belt to drive the steel ball to move to the position of the low-frequency ultrasonic flaw detector and the high-frequency ultrasonic flaw detector for lateral rotation flaw detection and axial rotation flaw detection, which increases the detection posture of the steel ball when rotating, reduces the ultrasonic flaw detection blind spot when the steel ball rotates, improves the accuracy of steel ball flaw detection, and improves the transmission efficiency of the steel ball between the low-frequency ultrasonic flaw detector and the high-frequency ultrasonic flaw detector. The steel ball is also inspected by setting a low-frequency ultrasonic flaw detector and a high-frequency ultrasonic flaw detector with two frequencies. The low-frequency ultrasonic flaw detector has good penetration ability and can detect deeper defects of the steel ball. The high-frequency ultrasonic flaw detector has a higher resolution and can detect smaller defects more accurately, further improving the accuracy of steel ball flaw detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front cross-sectional view of the flaw detection box in the first and second embodiments of the present application;

[0017] Figure 2 This is a front cross-sectional view of the feed pipe and the discharge pipe in the first and second embodiments of the present application;

[0018] Figure 3 This is a state diagram when the steel ball is located inside the conveyor belt in the first and second embodiments of the present application;

[0019] Figure 4 It is a side cross-sectional view of the flaw detection box in the first and second embodiments of the present application;

[0020] Figure 5 This is a three-dimensional diagram of the depth pipe in the first and second embodiments of the present application;

[0021] Figure 6This is a diagram showing the rotation state when the steel ball is located on the upper side of the low-frequency ultrasonic flaw detector in the first and second embodiments of the present application;

[0022] Figure 7 This is a diagram showing the rotation state when the steel ball is located on the upper side of the high-frequency ultrasonic flaw detector in the first and second embodiments of the present application;

[0023] Figure 8 This is a front view of the storage box in the second embodiment of the present application;

[0024] Fig. 9 This is a side view of the substrate in the second embodiment of the present application.

[0025] Description of the numbers in the figure:

[0026] 1. NDT box; 2. Feed pipe; 201. Right slot; 202. Left slot; 3. Feed push rod; 4. Side top block; 5. Depth pipe; 501. Accommodation slot; 6. Lower left conveyor; 7. Lower right conveyor; 8. Upper left conveyor; 9. Upper right conveyor; 10. Base plate; 1001. Rotating shaft; 1002. Driving wheel; 1003. Conveyor belt; 1004. Driving motor; 11. Adjusting motor; 1101. Screw rod; 12. Support plate; 13. Connecting plate; 14. Low-frequency ultrasonic flaw detector; 15. High-frequency ultrasonic flaw detector; 16. Discharge pipe; 17. Lower slot; 18. Side slot; 19. Lifting push rod; 20. Upper top block; 21. Storage box; 22. Reflux pipe; 23. Branch pipe; 24. Liquid pump; 25. Conveying pipe; 26. Vertical plate. DETAILED DESCRIPTION

[0027] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0028] The first implementation method:

[0029] Figure 1-7The ultrasonic flaw detection device of a bearing steel ball is shown, comprising a flaw detection box 1, one end of which is fixedly connected to a feed pipe 2, and two sides of the bottom end of the feed pipe 2 are respectively provided with a right slot 201 and a left slot 202, one end of the flaw detection box 1 close to the feed pipe 2 is fixedly connected to a vertical plate 26, one end of the vertical plate 26 is fixedly connected to a feed push rod 3, the telescopic end of the feed push rod 3 is fixedly connected to a side top block 4, one end of the side top block 4 is located on the inner side of the right slot 201 and is slidably connected thereto, and a left lower feed block 206 is installed at the lower left corner of the flaw detection box 1 at the end of the flaw detection box 1 where the feed push rod 3 is far from the side top block 4 The conveyor 6, the lower right conveyor 7 located at the lower right corner of the flaw detection box 1, the upper left conveyor 8 located at the upper left corner of the flaw detection box 1 and the upper right conveyor 9 located at the upper right corner of the flaw detection box 1, the lower left conveyor 6, the lower right conveyor 7, the upper left conveyor 8, and the upper right conveyor 9 are all composed of a substrate 10, one end of the substrate 10 is rotatably connected to two rotating shafts 1001, one end of the rotating shaft 1001 is fixedly connected to a driving wheel 1002, a conveyor belt 1003 is rotatably connected between the two driving wheels 1002, one end of the substrate 10 is fixedly connected to a driving motor 1004, and the output end of the driving motor 1004 is connected to the One of the rotating shafts 1001 is fixedly connected, and the bottom end of the flaw detection box 1 is fixedly connected with a low-frequency ultrasonic flaw detector 14 and a high-frequency ultrasonic flaw detector 15, and the low-frequency ultrasonic flaw detector 14 and the high-frequency ultrasonic flaw detector 15 are located between the lower left conveyor 6 and the lower right conveyor 7. The flaw detection box 1 is located at the end of the lower left conveyor 6 away from the feed pipe 2 and is fixedly connected with a discharge pipe 16. A lower slot 17 is provided between the bottom end of the discharge pipe 16 and the flaw detection box 1, and a side slot 18 is provided on the side wall of one end of the discharge pipe 16. The side slot 18 and the left slot 202 are respectively located on the lower left conveyor 6, the lower right conveyor 7, and the upper left conveyor. Between the two ends of the conveyor 8 and the upper right conveyor 9, the end of the flaw detection box 1 close to the lower slot 17 is fixedly connected with a lifting push rod 19, and the telescopic end of the lifting push rod 19 is fixedly connected with an upper top block 20. The upper top block 20 is located on the inner side of the lower slot 17 and is slidably connected thereto. It also includes a rotation control module, which is electrically connected to the lower left conveyor 6, the lower right conveyor 7, the upper left conveyor 8, and the upper right conveyor 9. More specifically, the rotation control module is used to control the rotation speed of the drive motor 1004 on the lower left conveyor 6, the lower right conveyor 7, the upper left conveyor 8, and the upper right conveyor 9.

[0030] When flaw detection of steel balls is performed, the steel balls to be detected are placed inside the feed tube 2 and the feed push rod 3 is started to push the steel balls inside the feed tube 2 between the lower left conveyor 6, the lower right conveyor 7, the upper left conveyor 8, and the upper right conveyor 9. At this time, the rotation control module makes the lower left conveyor 6 and the lower right conveyor 7 rotate in the same direction, the upper left conveyor 8 and the upper right conveyor 9 rotate in the same direction, and the lower left conveyor 6 and the lower right conveyor 7 rotate in the opposite direction to the upper left conveyor 8 and the upper right conveyor 9. The rotation speed of the upper left conveyor 8 and the upper right conveyor 9 is greater than the rotation speed of the lower left conveyor 6 and the lower right conveyor 7, so that the steel balls rotate horizontally and move in the direction of the low-frequency ultrasonic flaw detector 14;

[0031] When the steel ball moves to the upper side of the low-frequency ultrasonic flaw detector 14, the rotation control module makes the rotation speed of the upper left conveyor 8 and the upper right conveyor 9 equal to the rotation speed of the lower left conveyor 6 and the lower right conveyor 7, so that the steel ball rotates horizontally and in situ. At this time, the low-frequency ultrasonic flaw detector 14 performs horizontal flaw detection on the steel ball.

[0032] Then the control module is rotated to make the lower left conveyor 6 and the upper left conveyor 8 rotate in the same direction, the lower right conveyor 7 and the upper right conveyor 9 rotate in the same direction, and the lower left conveyor 6 and the upper left conveyor 8 rotate in the opposite direction and the same speed as the lower right conveyor 7 and the upper right conveyor 9, so that the steel ball rotates axially and in situ, and the low-frequency ultrasonic flaw detector 14 performs axial flaw detection on the steel ball at this time;

[0033] After the steel ball has completed the lateral and axial flaw detection at the position of the low-frequency ultrasonic flaw detector 14, the rotation control module controls the rotation speed of the lower right conveyor 7 and the upper right conveyor 9 to be greater than the rotation speed of the lower left conveyor 6 and the upper left conveyor 8, so that the steel ball rotates axially and moves toward the direction of the high-frequency ultrasonic flaw detector 15;

[0034] When the steel ball moves to the upper side of the high-frequency ultrasonic flaw detector 15, the rotation control module makes the rotation speed of the lower left conveyor 6 and the upper left conveyor 8 equal to the rotation speed of the lower right conveyor 7 and the upper right conveyor 9, so that the steel ball rotates in situ and axially. At this time, the high-frequency ultrasonic flaw detector 15 performs axial flaw detection on the steel ball;

[0035] Then the control module is rotated to make the lower left conveyor 6 and the lower right conveyor 7 rotate in the same direction, the upper left conveyor 8 and the upper right conveyor 9 rotate in the same direction, and the lower left conveyor 6 and the lower right conveyor 7 rotate in the opposite direction and the same speed as the upper left conveyor 8 and the upper right conveyor 9, so that the steel ball rotates horizontally and in situ, and the high-frequency ultrasonic flaw detector 15 performs horizontal flaw detection on the steel ball at this time;

[0036] After the steel ball completes the lateral and axial flaw detection at the position of the high-frequency ultrasonic flaw detector 15, the rotation control module makes the rotation speed of the upper left conveyor 8 and the upper right conveyor 9 greater than the rotation speed of the lower left conveyor 6 and the lower right conveyor 7, so that the steel ball moves laterally to the position of the discharge pipe 16 until it separates from the lower left conveyor 6, the lower right conveyor 7, the upper left conveyor 8, and the upper right conveyor 9 to complete the flaw detection.

[0037] Through the above-mentioned arrangement, a conveyor belt is used to drive the steel ball to move to the position of the low-frequency ultrasonic flaw detector 14 and the high-frequency ultrasonic flaw detector 15 for lateral rotation flaw detection and axial rotation flaw detection, thereby increasing the detection posture of the steel ball when rotating and improving the accuracy of steel ball flaw detection. Compared with the traditional method of using a mechanical arm to pick up the steel ball and place it at the flaw detection station, the transmission efficiency of the steel ball between the low-frequency ultrasonic flaw detector 14 and the high-frequency ultrasonic flaw detector 15 is improved. By setting two frequencies of low-frequency ultrasonic flaw detector 14 and high-frequency ultrasonic flaw detector 15 to detect the steel ball, the low-frequency ultrasonic flaw detector 14 has better penetration ability and can detect deeper defects of the steel ball. The high-frequency ultrasonic flaw detector 15 has higher resolution and can more accurately detect smaller defects, thereby further improving the accuracy of steel ball flaw detection.

[0038] The lower left conveyor 6, the lower right conveyor 7, the upper left conveyor 8 and the upper right conveyor 9 are distributed in a rectangular shape; during detection, the steel ball is located between the lower left conveyor 6, the lower right conveyor 7, the upper left conveyor 8 and the upper right conveyor 9, and the diameter of the steel ball is greater than the distance between the lower left conveyor 6 and the lower right conveyor 7. More specifically, the steel ball contacts the conveyor belt 1003 during transportation.

[0039] The second implementation method:

[0040] Figure 1-9 An ultrasonic flaw detection device for bearing steel balls is shown. Different from the first embodiment, the inner walls of the left slot 202 and the side slot 18 are fixedly connected with a depth tube 5, one end of the depth tube 5 extends to between the lower left conveyor 6, the lower right conveyor 7, the upper left conveyor 8, and the upper right conveyor 9, and a receiving groove 501 is provided at one end of the depth tube 5. Through the above arrangement, the depth tube 5 can guide the steel balls.

[0041] A storage box 21 is fixedly connected to the outer wall of the flaw detection box 1, a return pipe 22 is fixedly connected to the storage box 21 near the bottom end of the storage box 21, a branch pipe 23 is fixedly connected between the bottom end of the return pipe 22 and the storage box 21, a liquid pump 24 is fixedly connected to the side wall of the storage box 21, and a delivery pipe 25 is fixedly connected to the output end and the input end of the liquid pump 24, one of the delivery pipes 25 is located on the inner side of the flaw detection box 1, and the other delivery pipe 25 is located on the inner side of the flaw detection box 1, the interior of the flaw detection box 1 and the storage box 21 are both filled with coupling agent, a filter is installed inside the storage box 21, the top of the return pipe 22 is higher than the low-frequency ultrasonic flaw detector 14 and the high-frequency ultrasonic flaw detector 15, through the above arrangement, the coupling agent inside the flaw detection box 1 can be filled between the low-frequency ultrasonic flaw detector 14 and the steel ball, thereby improving the flaw detection effect of the low-frequency ultrasonic flaw detector 14 and the high-frequency ultrasonic flaw detector 15.

[0042] The inner walls of the flaw detection box 1 near multiple substrates 10 are fixedly connected with an adjusting motor 11 and a support plate 12, one end of the substrate 10 is fixedly connected with a connecting plate 13, the connecting plate 13 and the support plate 12 are slidably connected, and the output end of the adjusting motor 11 is fixedly connected with a screw rod 1101, which passes through the connecting plate 13 and is threadedly connected thereto.

[0043] Through the above arrangement, when detecting steel balls of different diameters, the adjusting motor 11 can be started to rotate forward or reverse, and the substrate 10 can be driven by the screw rod 1101 to move toward or away from the adjusting motor 11, that is, the lower left conveyor 6, the lower right conveyor 7, the upper left conveyor 8, and the upper right conveyor 9 are moved closer to or away from each other, so as to be suitable for measuring steel balls of different diameters.

[0044] The sides of the multiple conveyor belts 1003 that are close to each other are all set to be arc-shaped; through the above-mentioned setting, the supporting area between the conveyor belts 1003 and the steel balls can be increased, so that the conveyor belts 1003 can better drive the steel balls to rotate.

[0045] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An ultrasonic flaw detection device for a bearing steel ball, comprising a flaw detection box (1), characterized in that: One end of the flaw detection box (1) is fixedly connected to a feed pipe (2), and two sides of the bottom end of the feed pipe (2) are respectively provided with a right slot (201) and a left slot (202). One end of the flaw detection box (1) close to the feed pipe (2) is fixedly connected to a vertical plate (26), one end of the vertical plate (26) is fixedly connected to a feed push rod (3), the telescopic end of the feed push rod (3) is fixedly connected to a side top block (4), one end of the side top block (4) is located on the inner side of the right slot (201) and is slidably connected thereto, and a left lower conveyor located at the lower left corner of the flaw detection box (1) is installed at the end of the flaw detection box (1) located away from the side top block (4) and the feed push rod (3). (6), a lower right conveyor (7) located at the lower right corner of the flaw detection box (1), an upper left conveyor (8) located at the upper left corner of the flaw detection box (1), and an upper right conveyor (9) located at the upper right corner of the flaw detection box (1), wherein the lower left conveyor (6), the lower right conveyor (7), the upper left conveyor (8), and the upper right conveyor (9) are all composed of a base plate (10), one end of the base plate (10) is rotatably connected to two rotating shafts (1001), one end of the rotating shaft (1001) is fixedly connected to a driving wheel (1002), a conveyor belt (1003) is rotatably connected between the two driving wheels (1002), and one end of the base plate (10) is fixedly connected to a driving motor (1004), the output end of the driving motor (1004) is fixedly connected to one of the rotating shafts (1001), the bottom end of the flaw detection box (1) is fixedly connected to a low-frequency ultrasonic flaw detector (14) and a high-frequency ultrasonic flaw detector (15), the low-frequency ultrasonic flaw detector (14) and the high-frequency ultrasonic flaw detector (15) are located between the lower left conveyor (6) and the lower right conveyor (7), the flaw detection box (1) is located at the end of the lower left conveyor (6) away from the feed pipe (2) and is fixedly connected to a discharge pipe (16), a lower slot (17) is provided between the bottom end of the discharge pipe (16) and the flaw detection box (1), and a side wall at one end of the discharge pipe (16) is provided. A side slot (18), wherein the side slot (18) and the left slot (202) are respectively located between the two ends of the lower left conveyor (6), the lower right conveyor (7), the upper left conveyor (8), and the upper right conveyor (9); an end of the flaw detection box (1) close to the lower slot (17) is fixedly connected to a material lifting push rod (19); a telescopic end of the material lifting push rod (19) is fixedly connected to an upper top block (20); the upper top block (20) is located on the inner side of the lower slot (17) and is slidably connected thereto; and a rotation control module is also included, wherein the rotation control module is electrically connected to the lower left conveyor (6), the lower right conveyor (7), the upper left conveyor (8), and the upper right conveyor (9); When flaw detection of steel balls is performed, the steel balls to be detected are placed inside the feed pipe (2) and the feed push rod (3) is started to push the steel balls inside the feed pipe (2) between the lower left conveyor (6), the lower right conveyor (7), the upper left conveyor (8) and the upper right conveyor (9). At this time, the rotation control module makes the lower left conveyor (6) and the lower right conveyor (7) rotate in the same direction, the upper left conveyor (8) and the upper right conveyor (9) rotate in the same direction, and the lower left conveyor (6) and the lower right conveyor (7) rotate in the opposite direction to the upper left conveyor (8) and the upper right conveyor (9). The rotation speed of the upper left conveyor (8) and the upper right conveyor (9) is greater than the rotation speed of the lower left conveyor (6) and the lower right conveyor (7), so that the steel balls rotate horizontally and move in the direction of the low-frequency ultrasonic flaw detector (14); When the steel ball moves to the upper side of the low-frequency ultrasonic flaw detector (14), the rotation control module makes the rotation speed of the upper left conveyor (8) and the upper right conveyor (9) equal to the rotation speed of the lower left conveyor (6) and the lower right conveyor (7), so that the steel ball rotates horizontally and in situ, and the low-frequency ultrasonic flaw detector (14) performs horizontal flaw detection on the steel ball; Then, the control module is rotated so that the lower left conveyor (6) and the upper left conveyor (8) rotate in the same direction, the lower right conveyor (7) and the upper right conveyor (9) rotate in the same direction, and the lower left conveyor (6) and the upper left conveyor (8) rotate in opposite directions and at the same speed as the lower right conveyor (7) and the upper right conveyor (9), so that the steel ball rotates axially and in situ, and at this time, the low-frequency ultrasonic flaw detector (14) performs axial flaw detection on the steel ball; When the steel ball has completed lateral and axial flaw detection at the position of the low-frequency ultrasonic flaw detector (14), the rotation control module controls the rotation speed of the lower right conveyor (7) and the upper right conveyor (9) to be greater than the rotation speed of the lower left conveyor (6) and the upper left conveyor (8), so that the steel ball rotates axially and moves in the direction of the high-frequency ultrasonic flaw detector (15); When the steel ball moves to the upper side of the high-frequency ultrasonic flaw detector (15), the rotation control module makes the rotation speed of the lower left conveyor (6) and the upper left conveyor (8) equal to the rotation speed of the lower right conveyor (7) and the upper right conveyor (9), so that the steel ball rotates in situ and axially, and the high-frequency ultrasonic flaw detector (15) performs axial flaw detection on the steel ball; Then, the control module is rotated so that the lower left conveyor (6) and the lower right conveyor (7) rotate in the same direction, the upper left conveyor (8) and the upper right conveyor (9) rotate in the same direction, and the lower left conveyor (6) and the lower right conveyor (7) rotate in opposite directions and at the same speed as the upper left conveyor (8) and the upper right conveyor (9), so that the steel ball rotates horizontally and in situ, and at this time, the high-frequency ultrasonic flaw detector (15) performs horizontal flaw detection on the steel ball; After the steel ball has completed lateral and axial flaw detection at the position of the high-frequency ultrasonic flaw detector (15), the rotation control module makes the rotation speed of the upper left conveyor (8) and the upper right conveyor (9) greater than the rotation speed of the lower left conveyor (6) and the lower right conveyor (7), so that the steel ball moves laterally toward the position of the discharge pipe (16) until it is separated from the lower left conveyor (6), the lower right conveyor (7), the upper left conveyor (8), and the upper right conveyor (9), thereby completing the flaw detection.

2. The ultrasonic flaw detection device for a bearing steel ball according to claim 1, characterized in that: The lower left conveyor (6), the lower right conveyor (7), the upper left conveyor (8) and the upper right conveyor (9) are distributed in a rectangular shape.

3. The ultrasonic flaw detection device for a bearing steel ball according to claim 1, characterized in that: The inner walls of the left slot (202) and the side slot (18) are fixedly connected with a depth tube (5), one end of which extends between the lower left conveyor (6), the lower right conveyor (7), the upper left conveyor (8), and the upper right conveyor (9), and one end of which is provided with a receiving groove (501).

4. The ultrasonic flaw detection device for a bearing steel ball according to claim 1, characterized in that: The outer wall of the flaw detection box (1) is fixedly connected to a storage box (21), a return pipe (22) is fixedly connected to the bottom end of the storage box (21) near the storage box (21), and a branch pipe (23) is fixedly connected between the bottom end of the return pipe (22) and the storage box (21).

5. The ultrasonic flaw detection device for a bearing steel ball according to claim 4 is characterized in that: A liquid pump (24) is fixedly connected to the side wall of the storage box (21), and both the output end and the input end of the liquid pump (24) are fixedly connected to delivery pipes (25), wherein one of the delivery pipes (25) is located inside the flaw detection box (1), and the other delivery pipe (25) is located inside the flaw detection box (1).

6. The ultrasonic flaw detection device for a bearing steel ball according to claim 5, characterized in that: The interiors of the flaw detection box (1) and the storage box (21) are both filled with coupling agent, a filter is installed inside the storage box (21), and the top end of the return pipe (22) is higher than the low-frequency ultrasonic flaw detector (14) and the high-frequency ultrasonic flaw detector (15).

7. The ultrasonic flaw detection device for a bearing steel ball according to claim 1 is characterized in that: The inner walls of the flaw detection box (1) close to the multiple base plates (10) are fixedly connected to an adjustment motor (11) and a support plate (12); one end of the base plate (10) is fixedly connected to a connection plate (13); and the connection plate (13) and the support plate (12) are slidably connected.

8. The ultrasonic flaw detection device for a bearing steel ball according to claim 7, characterized in that: The output end of the regulating motor (11) is fixedly connected to a screw rod (1101), and the screw rod (1101) passes through the connecting plate (13) and is threadedly connected thereto.

9. The ultrasonic flaw detection device for a bearing steel ball according to claim 1, characterized in that: The sides of the plurality of conveyor belts (1003) that are close to each other are all arranged in an arc shape.

Images