Nondestructive testing equipment for hollow shaft

Abstract

The utility model provides nondestructive testing equipment for a hollow shaft. The device comprises a feeding device, a circle run-out detection device, a workpiece transfer device, an eddy current flaw detection device, an ultrasonic detection device, a discharging device and a control system, the eddy current flaw detection device comprises a plurality of eddy current flaw detection mechanisms, each eddy current flaw detection mechanism comprises a detection station, and a first eddy current flaw detection module is arranged on one side of each detection station; the first eddy current flaw detection module comprises an inner side eddy current flaw detection module and a small diameter eddy current flaw detection module, the other side of the detection station is provided with a second eddy current flaw detection module, and the second eddy current flaw detection module comprises a large diameter eddy current flaw detection module and a spline eddy current flaw detection module; by integrating the feeding device, the circle run-out detection device, the workpiece transfer device, the eddy current flaw detection device, the ultrasonic detection device and the discharging device, the integrated nondestructive detection process of the hollow shaft is realized. According to the integrated equipment design, the transfer time of the workpiece among different detection links is shortened, and the overall detection efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to a hollow shaft nondestructive testing device, which is applied to the hollow shaft testing field. Background Art

[0002] A hollow shaft is a mechanical component that is usually used to transmit torque and motion. Its core feature is that the center part of the shaft is hollow, which can reduce weight and material usage while maintaining sufficient strength and rigidity. Hollow shafts are used in various mechanical equipment, such as automotive transmission systems, wind turbines, robot joints, etc.

[0003] The inspection of hollow shafts is an important part of quality control and safety assessment of key rotating parts in the industrial field. Existing non-destructive testing methods include eddy current testing, ultrasonic testing, etc. The existing testing equipment is single, and a single testing method may cause defects in the hollow shaft. In order to improve the quality of the hollow shaft, manufacturers usually have to carry out multiple testing items, and the results of eddy current testing and ultrasonic testing may be affected by the straightness and concentricity of the hollow shaft. The use of existing testing equipment not only requires manual switching to the next item of testing, which is inefficient, but the testing process will also be affected by other factors, resulting in detection errors. Therefore, in response to the above problems, the utility model designs a non-destructive testing device for hollow shafts. Utility Model Content

[0004] The utility model provides a hollow shaft nondestructive testing device, which can effectively solve the above problems.

[0005] The utility model is achieved in this way:

[0006] A non-destructive testing device for a hollow shaft includes a feeding device, a circular runout detection device, a workpiece transfer device, an eddy current flaw detection device, an ultrasonic detection device, a discharge device and a control system.

[0007] A feeding device, used for feeding the hollow shaft workpiece;

[0008] Circular runout detection device, used to detect the concentricity / straightness of hollow shafts;

[0009] A workpiece transfer device, used for transferring the hollow shaft workpiece;

[0010] An eddy current flaw detection device, comprising a plurality of eddy current flaw detection mechanisms, wherein the eddy current flaw detection mechanisms include a detection station, wherein a first eddy current flaw detection module is arranged on one side of the detection station, wherein the first eddy current flaw detection module includes an inner eddy current flaw detection module and a small-diameter eddy current flaw detection module, and a second eddy current flaw detection module is arranged on the other side of the detection station, wherein the second eddy current flaw detection module includes a large-diameter eddy current flaw detection module and a spline eddy current flaw detection module;

[0011] The ultrasonic detection device comprises a first centering servo clamping mechanism, and an ultrasonic flaw detection mechanism and an ultrasonic thickness measurement mechanism arranged on both sides of the first centering servo clamping mechanism;

[0012] A discharge device, used for unloading the hollow shaft;

[0013] NG material box, used to store workpieces that fail the inspection;

[0014] The control system is used to control the working process of the circular runout detection device, the eddy current flaw detection device, and the ultrasonic detection device, and to read and judge the data and images collected by the circular runout detection device, the eddy current flaw detection device, and the ultrasonic detection device.

[0015] (1) The beneficial effect of the utility model is that the utility model realizes an integrated non-destructive testing process of hollow shafts by integrating a feeding device, a circular runout detection device, a workpiece transfer device, an eddy current flaw detection device, an ultrasonic detection device and a unloading device. This integrated equipment design reduces the transfer time of the workpiece between different detection links, and is equipped with a control system that can automatically read and judge the data and images collected by various detection devices, reducing manual intervention and reducing detection errors caused by human factors. At the same time, it also reduces the labor intensity of operators and significantly improves the overall detection efficiency. In addition, since eddy current detection and ultrasonic detection are easily affected by the concentricity / straightness of the hollow shaft, the hollow shaft with better concentricity / straightness is first selected. On the one hand, it is a hard indicator of the concentricity / straightness of the hollow shaft, and on the other hand, it can reduce the concentricity / straightness of the hollow shaft for eddy current detection and The influence of ultrasonic testing is used to improve the accuracy and reliability of the test results. The eddy current flaw detection device of the utility model includes an inner eddy current flaw detection module, a small-diameter eddy current flaw detection module, a large-diameter eddy current flaw detection module, and a spline eddy current flaw detection module. The flaw detection is performed on various parts of the hollow shaft, and then the internal flaw detection is performed on the ultrasonic flaw detection mechanism, and the thickness of the hollow shaft is measured by the ultrasonic thickness measurement mechanism. Through the comprehensive application of these detection methods, the quality of the hollow shaft can be more comprehensively evaluated to ensure the accuracy and reliability of the test results. This versatility enables the equipment to adapt to different types of hollow shaft detection, thereby improving the flexibility of use and the scope of application of the equipment.

[0016] (2) The utility model designs two eddy current flaw detection mechanisms, including a first eddy current flaw detection mechanism and a second eddy current flaw detection mechanism. The first eddy current flaw detection mechanism includes a first detection station, and the second eddy current flaw detection mechanism includes a second detection station. The eddy current flaw detection modules arranged at the first detection station and the second detection station are arranged in a mirror image. Therefore, during the eddy current detection process, the first eddy current flaw detection mechanism is firstly detected, and then the second eddy current flaw detection mechanism is detected. Since the eddy current detection requires the probe to be inserted into the inner side of both ends of the hollow shaft for detection, the utility model designs a central rotating wheel module to drive the hollow shaft to rotate for detection. During the detection process, due to the size of the hollow shaft, the smoothness of the surface, or the smoothness of the rotating wheel, Factors such as degree may cause the hollow shaft to rotate unsmoothly, thereby affecting the signal distribution image of eddy current detection. Therefore, two detection stations are designed. On the one hand, the multi-station detection mechanism can increase the detection efficiency. On the other hand, the overlap of the signal distribution image of the overlapping part of the large-diameter eddy current detection module can be used to determine whether the equipment is abnormal due to various factors. The inner eddy current flaw detection module and the small-diameter eddy current flaw detection module can also be mirrored to determine whether the hollow shaft is symmetrical. Therefore, the eddy current flaw detection device of the utility model can not only perform flaw detection accurately, but also perform abnormal self-inspection of the equipment and determine the degree of symmetry of the hollow shaft, thereby ensuring the accuracy and reliability of the detection results and significantly improving the detection efficiency.

[0017] (3) The feeding mechanism includes a plurality of loading plates stacked up and down and having a certain inclination angle. Feeding can be carried out through different loading plates. Width-adjustable enclosures are arranged on both sides of the loading plates, which can be adjusted according to hollow shafts of different widths, so that the hollow shaft can stably enter the bottom loading plate in a rolling state. When the hollow shaft enters the bottom loading plate, the guide assembly is driven by the cylinder to lift the hollow shaft upward, and the hollow shaft rolls downward on the inclined top of the first guide plate, so that the hollow shaft rolls again into the third guide plate along the top of the second guide plate. The purpose of setting three guide plates is to control a single hollow shaft to be transmitted to the third guide plate, and then to the fork material transfer mechanism through the third guide plate, and then to the circular runout detection device through the fork material transfer mechanism. The feeding device has high feeding efficiency and can transmit the hollow shafts to the circular runout detection device one by one in sequence, so as to prevent feeding confusion and affect the detection result.

[0018] (4) The ultrasonic flaw detection mechanism includes a third linear module arranged on the second frame, the third linear module is provided with a fourth base, the fourth base is provided with a double-axis cylinder with an inclination angle of A, the double-axis cylinder is installed with a first fixed bracket, the first fixed bracket is provided with an ultrasonic flaw detection probe, the first fixed bracket is provided with a first water inlet on the side wall, and then through a water storage tank arranged at the bottom of the supporting body, the water storage tank is provided with a water outlet on the side wall, the water outlet is connected to a circulating water coupling system, the circulating water coupling system supplies water to the first water inlet and the second water inlet, and the ultrasonic transmission efficiency of the ultrasonic flaw detection probe and the ultrasonic thickness measuring probe can be improved through the circulating water coupling system, thereby improving the detection efficiency and detection accuracy. In addition, since the double-axis cylinder has an inclination angle A, the angle between the probe detection angle of the ultrasonic flaw detection probe and the water flow direction is also A, so setting the water flow in this direction can reduce the generation of bubbles, thereby improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figures 1-2 It is a schematic diagram of the structure of the whole machine provided by the embodiment of the utility model.

[0021] Figures 3-4 It is a schematic diagram of the structure of a feeding device and a circular runout detection device provided in an embodiment of the utility model.

[0022] Figure 5 It is a schematic diagram of the structures of an eddy current flaw detection device and an ultrasonic detection device provided in an embodiment of the utility model.

[0023] Figure 6 It is a schematic diagram of the detection station and water storage tank structure provided by the embodiment of the utility model.

[0024] Figure 7 It is a schematic diagram of the structure of a small-diameter eddy current flaw detection module provided by an embodiment of the utility model.

[0025] Figure 8 It is a schematic diagram of the structure of the inner eddy current flaw detection module provided by an embodiment of the utility model.

[0026] Figures 9-10 It is a schematic diagram of the structure of an ultrasonic flaw detection mechanism and an ultrasonic thickness measurement mechanism provided by an embodiment of the utility model. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0028] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] Reference Figure 1 As shown, refer to Figures 1-2 As shown, a nondestructive testing device for a hollow shaft includes a feeding device 10, a circular runout detection device 20, a workpiece transfer device 30, an eddy current flaw detection device 40, an ultrasonic detection device 50, a discharge device 60, an electric control cabinet 80, an instrument cabinet 90, a barcode scanner 100, and a control system. By integrating the feeding device 10, the circular runout detection device 20, the workpiece transfer device 30, the eddy current flaw detection device 40, the ultrasonic detection device 50, and the discharge device 60, an integrated nondestructive testing process for the hollow shaft is realized. This integrated equipment design reduces the transfer time of the workpiece between different detection links and significantly improves the overall detection efficiency.

[0030] Reference Figures 3-4As shown, the feeding device 10 is used to feed the hollow shaft workpiece; the feeding device 10 includes a first frame 11, and a feeding mechanism 12 is arranged on the first frame 11. The feeding mechanism 12 includes a plurality of loading plates 121 stacked up and down and having a certain inclination angle, and the two sides of the loading plates 121 are provided with width-adjustable enclosure plates 122, and the tail of the loading plate 121 located at the upper layer is symmetrically provided with a pair of arc-shaped guide plates 123 for conducting the workpiece downward, and the loading plate 121 located at the bottom layer is symmetrically provided with a pair of arc-shaped guide plates 123 for conducting the workpiece downward. The tail of the machine frame 1 is abutted with a material guide assembly 124 that can move up and down. The material guide assembly 124 is driven by a driving cylinder. The material guide assembly 124 includes a first material guide plate 1241 abutting against the bottom material loading plate 121, and a second material guide plate 1242 fixedly connected to the first material guide plate 1241. The height of the second material guide plate 1242 is higher than that of the first material guide plate 1241. A material guide assembly 124 that is fixedly arranged on the first frame 11 is arranged between the first material guide plate 1241 and the second material guide plate 1242. The third material guide plate 1243, the first material guide plate 1241, the second material guide plate 1242, and the third material guide plate 1243 have a certain inclination angle at the top, the second material guide plate 1242 abuts against the fork material transfer mechanism 13 for transferring workpieces one by one, and the fork material transfer mechanism 13 includes a plurality of symmetrically arranged fork workpiece racks 131 arranged on the first frame 11 and located at both ends in front of the second material guide plate 1242, and a fork material transfer rack 13 is arranged between the fork workpiece racks 131 2. Corresponding fork workpiece racks 131 are arranged on both sides of the fork material moving rack 132. The fork material moving rack 132 is driven forward by a rodless cylinder. The fork material moving rack 132 is lifted upward by a double-axis cylinder. When the hollow shaft is arranged at the fork workpiece racks 131 at both ends in front of the second material guide plate 1242, the fork workpiece racks 131 on both sides of the fork material moving rack 132 are lifted upward and then moved forward to the fork workpiece racks 131 at both ends in front of the corresponding two material guide plates, thereby realizing the transfer of workpieces one by one.

[0031] Reference Figures 3-4 As shown, the circular runout detection device 20 is used to detect the concentricity / straightness of the hollow shaft; the circular runout detection device 20 includes a second centering servo clamping mechanism 21, the second centering servo clamping mechanism 21 includes a supporting body 211 slidably arranged on the first frame 11, a centering servo module 212 is provided on the supporting body 211, a top cone chuck 213 for fixing the workpiece is provided on the centering servo module 212, a plurality of fork brackets 214 are provided in the middle of the centering servo module 212, a plurality of groups of slidable runout detection mechanisms 22 are provided at the bottom of the centering servo module 212, and the runout detection mechanism 22 includes a third base 221 slidably arranged on the first frame 11 and a lever detection assembly 222 arranged on the third base 221.

[0032] Reference Figures 1-2 As shown, the workpiece transfer device 30 is used to transfer the hollow shaft workpiece; the workpiece transfer device 30 includes a gantry support 31 arranged around the eddy current flaw detection device 40, and a first linear module 32 is arranged above the gantry support 31. The first linear module 32 is provided with a loading transverse movement mechanism 33, a detection transverse movement mechanism 34, and a material unloading and standard sample shifting mechanism 35. The loading transverse movement mechanism 33 clamps the workpiece from the circular runout detection device 20 station and puts it in the NG material box 70 (the NG material box 70 here is a scanning / runout NG material box) or the first eddy current flaw detection mechanism 41. The detection transverse movement mechanism The structure 34 can take materials from the first eddy current flaw detection mechanism 41 and the second eddy current flaw detection mechanism 42 respectively, and shift and place them to the second eddy current flaw detection mechanism 42 and the ultrasonic detection device 50. In this embodiment, there are two detection transverse movement mechanisms 34, and the unloading and standard sample shifting mechanism 35 can place the workpiece from the ultrasonic detection device 50 to the NG material box 70 (the NG material box 70 here is an eddy current / ultrasonic NG material box), the OK unloading position, and the standard sample placement position. The NG material box 70 is used to store workpieces that fail the inspection; the standard sample workpiece can also be moved from the standard sample placement position to the circular runout detection device 20.

[0033] Reference Figures 5 to 8 As shown, the eddy current flaw detection device 40 is used to perform eddy current flaw detection on the hollow shaft. The eddy current flaw detection device 40 includes a plurality of eddy current flaw detection mechanisms, and the eddy current flaw detection mechanism includes a detection station. In this embodiment, the eddy current flaw detection device 40 includes a first eddy current flaw detection mechanism 41 and a second eddy current flaw detection mechanism 42. The first eddy current flaw detection mechanism 41 includes a first detection station 411, and the second eddy current flaw detection mechanism 42 includes a second detection station 421. The first detection station 411 and the second detection station 421 both include a first servo motor disposed on a second bracket. The servo module 43 drives the centering wheel module 44 through a belt drive assembly. The centering wheel module 44 includes a first wheel group 441 and a second wheel group 442 opposite to the first wheel group 441. The first wheel group 441 and the second wheel group 442 each include two first driven wheels 4411. A plurality of fixed jaw modules 45 are arranged between the centering wheel modules 44. The fixed jaw modules 45 include a plurality of pneumatic jaws 451. A second driven wheel 452 is arranged at the end of the pneumatic jaw 451.

[0034] In this embodiment, a first eddy current flaw detection module is arranged on the left side of the first inspection station 411, a second eddy current flaw detection module is arranged on the right side of the first inspection station 411, a second eddy current flaw detection module is arranged on the left side of the second inspection station 421, and a first eddy current flaw detection module is arranged on the right side of the second inspection station 421, the first eddy current flaw detection module includes an inner eddy current flaw detection module 46 and a small-diameter eddy current flaw detection module 47, and the second eddy current flaw detection module includes a large-diameter eddy current flaw detection module 48 and a spline eddy current flaw detection module 49;

[0035] The small-diameter eddy current flaw detection module 47, the large-diameter eddy current flaw detection module 48 and the spline eddy current flaw detection module 49 all include a second linear module 471 arranged on a second bracket. The stroke of the second linear module 471 of the large-diameter eddy current flaw detection module 48 is more than half of the width of the first inspection station 411 and the second inspection station 421. The second linear module 471 is provided with a first base 472, and the first base 472 is provided with a first double-axis cylinder 473 for driving. The first double-axis cylinder 473 is provided with a first mounting bracket 474, and the mounting bracket is installed with an eddy current flaw detection probe 475.

[0036] The inner eddy current flaw detection module 46 includes a second linear module 471 arranged on a second bracket, a second base 461 is arranged on the second linear module 471, a second double-axis cylinder 462 for driving is arranged on the second base 461, a first sensor 4621 with a detection port arranged in a horizontal direction is arranged on the second double-axis cylinder 462, the second double-axis cylinder 462 drives a second mounting bracket 463, a second sensor 464 with a detection port arranged in a vertical direction is arranged on the side wall of the second mounting bracket 463, a group of guide rods 465 are arranged on the second mounting bracket 463, the guide rods 465 can be slidably connected to the third mounting bracket 466, a slider 467 is arranged on the third mounting bracket 466, the slider 467 is slidably connected to the slide rail 468, a fourth mounting bracket 469 is arranged on the slide rail 468, and an eddy current flaw detection probe 475 is installed on the fourth mounting bracket 469. Since the inner eddy current flaw detection module 46 needs to penetrate into the inner side of the hollow shaft for detection, in order to prevent the eddy current flaw detection probe 475 from being damaged due to collision, the probe is positioned by the first sensor 4621 and the second sensor 464. Even if the workpiece shakes during rotation and accidentally hits the eddy current flaw detection probe 475, it can be buffered by the sliding cooperation of the guide rod 465 and the slider 467 and the slide rail 468 to reduce damage.

[0037] The eddy current flaw detection device 40 also includes an eddy current station width adjustment device 48, which drives the first rotating wheel group 441 and the second rotating wheel group 442 to move closer to / away from each other through a fourth linear module 481 between the first inspection station 411 and the second inspection station 421 to adjust the width of the inspection station pair.

[0038] Reference Figures 5-6 as well as Figures 9-10 As shown, the ultrasonic detection device 50 is used to perform ultrasonic flaw detection 51 and ultrasonic thickness measurement 52 on the hollow shaft. The ultrasonic detection device 50 includes a first centering servo clamping mechanism 53, and ultrasonic flaw detection mechanisms and ultrasonic thickness measurement mechanisms arranged on both sides of the first centering servo clamping mechanism 53; the first centering servo clamping mechanism 53 includes a support body 211 slidably arranged on the second frame, a centering servo module 212 is arranged on the support body 211, a top cone chuck 213 for fixing the workpiece is arranged on the centering servo module 212, and a plurality of fork brackets 214 are arranged in the middle of the centering servo module 212, and the ultrasonic flaw detection mechanism includes a third linear module 511 arranged on the second frame, a fourth base 512 is arranged on the third linear module 511, and a fourth base 512 is arranged on the fourth base 512 with an inclination angle of A A third double-axis cylinder 513 is provided, a first fixed bracket 514 is installed on the double-axis cylinder, an ultrasonic flaw detection probe 515 is arranged in the first fixed bracket 514, and a first water inlet 5141 is arranged on the side wall of the first fixed bracket 514. The ultrasonic thickness measuring mechanism includes a fourth double-axis cylinder 521 arranged at the bottom of the third base 221, a second fixed bracket 522 is installed on the fourth double-axis cylinder 521, an ultrasonic thickness measuring probe 523 is arranged in the second fixed bracket 522, and a second water inlet 5221 is arranged on the side wall of the second fixed bracket 522. A water storage tank 54 is provided at the bottom of the support body 211, and a water outlet 541 is provided on the side wall of the water storage tank 54. The water outlet 541 is connected to a circulating water coupling system, and the circulating water coupling system supplies water to the first water inlet 5141 and the second water inlet 5221.

[0039] Reference Figures 1-2 As shown, the unloading device 60 is used to unload the hollow shaft; the unloading device 60 includes a plate chain conveyor line and a mechanical rolling and flipping mechanism 62, the plate chain conveyor line is used to convey the qualified workpieces transmitted by the workpiece transfer device 30 forward to the specified position, and the function of the mechanical rolling and flipping mechanism 62 is that when the workpiece is conveyed to the top of the specified position, the mechanism flips - receives - descends - flips and places it under the action of gravity, and gently places it to the specified position of the next process.

[0040] In this embodiment, the control system is used to control the working process of the circular runout detection device 20, the eddy current flaw detection device 40, and the ultrasonic detection device 50, and to read and judge the data collected and the images obtained by the circular runout detection device 20, the eddy current flaw detection device 40, and the ultrasonic detection device 50.

[0041] The utility model also provides a hollow shaft nondestructive testing method, comprising the following steps:

[0042] S10: placing the workpieces in the feeding device 10, so that the workpieces are transferred one by one to the circular runout detection device 20;

[0043] S20: The circular runout detection device 20 detects the workpiece, and the concentricity / straightness data measured by the circular runout detection device 20 is read by the control system;

[0044] When the read concentricity / straightness data is within the set fluctuation threshold range, it is determined to be a qualified product, and step S30 is executed;

[0045] When the read concentricity / straightness data does not meet the set fluctuation threshold range, it is judged as a defective product and is transferred to the NG material box 70 through the workpiece transfer device 30;

[0046] S30: transferring the workpiece to the eddy current flaw detection device 40 through the workpiece transfer device 30, performing eddy current flaw detection through the eddy current flaw detection device 40, and receiving the eddy current signal distribution diagram fed back by the eddy current flaw detection device 40 through the control system;

[0047] When the received eddy current signal distribution diagram meets the set fluctuation threshold range, that is, it is determined to be a qualified product, step S40 is executed;

[0048] When the received eddy current signal distribution diagram does not meet the set fluctuation threshold range, that is, it is determined to be a defective product, it is transferred to the NG material box 70 through the workpiece transfer device 30;

[0049] S40: The workpiece is transferred to the ultrasonic testing device 50 through the workpiece transfer device 30, and ultrasonic flaw detection 51 and ultrasonic thickness measurement 52 are performed through ultrasonic detection, and the reflected wave electrical signal value fed back by the ultrasonic testing device 50 is received through the control system;

[0050] When the received reflected wave electrical signal value meets the set threshold fluctuation range, that is, it is determined to be a qualified product, step S50 is executed;

[0051] When the received reflected wave electric signal value does not meet the set threshold fluctuation range, that is, it is determined to be a defective product, it is transferred to the NG material box 70 through the workpiece transfer device 30;

[0052] S50: The workpiece is transferred to the unloading device 60 through the workpiece transfer device 30 to complete unloading.

[0053] As a further improvement, the step S30 further comprises:

[0054] S301: The workpiece is transferred to the first eddy current flaw detection mechanism 41, and the eddy current signal distribution diagram fed back by the inner eddy current flaw detection module 46, the small diameter eddy current flaw detection module 47, the large diameter eddy current flaw detection module 48, and the spline eddy current flaw detection module 49 is received through the control system;

[0055] S302: The workpiece is transferred to the second eddy current flaw detection mechanism 42, and the eddy current signal distribution diagram fed back by the inner eddy current flaw detection module 46, the small diameter eddy current flaw detection module 47, the large diameter eddy current flaw detection module 48, and the spline eddy current flaw detection module 49 is received through the control system;

[0056] S303: Comparing the eddy current signal distribution diagrams fed back by the large-diameter eddy current flaw detection modules 48 of the first eddy current flaw detection mechanism 41 and the second eddy current flaw detection mechanism 42;

[0057] When the similarity of the eddy current signal distribution diagrams fed back by the overlapping parts of the large-diameter eddy current flaw detection modules 48 of the first eddy current flaw detection mechanism 41 and the second eddy current flaw detection mechanism 42 reaches more than 85%, it is determined that the eddy current flaw detection mechanism is operating normally, and step S304 is executed;

[0058] When the similarity of the eddy current signal distribution diagrams fed back by the overlapping parts of the large-diameter eddy current flaw detection modules 48 of the first eddy current flaw detection mechanism 41 and the second eddy current flaw detection mechanism 42 reaches less than 85%, it is determined that the eddy current flaw detection mechanism is operating abnormally, and the machine is stopped for inspection;

[0059] S304: Compare the eddy current signal distribution diagrams fed back by the inner eddy current flaw detection module 46 and the small-diameter eddy current flaw detection module 47 of the first eddy current flaw detection mechanism 41 and the second eddy current flaw detection mechanism 42;

[0060] When the similarity of the eddy current signal distribution diagrams fed back by the inner eddy current flaw detection module 46 and the small-diameter eddy current flaw detection module 47 of the first eddy current flaw detection mechanism 41 and the second eddy current flaw detection mechanism 42 reaches more than 85%, it is determined to be a hollow axisymmetric qualified product, and step S40 is executed;

[0061] When the similarity of the eddy current signal distribution diagrams fed back by the inner eddy current flaw detection module 46 and the small-diameter eddy current flaw detection module 47 of the first eddy current flaw detection mechanism 41 and the second eddy current flaw detection mechanism 42 reaches below 85%, it is determined to be a hollow axis symmetrical defective product and is transferred to the NG material box 70 through the workpiece transfer device 30.

[0062] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hollow shaft nondestructive testing device, characterized in that: include; A feeding device (10) for feeding the hollow shaft workpiece; A circular runout detection device (20) for detecting the concentricity / straightness of the hollow shaft; A workpiece transfer device (30) for transferring the hollow shaft workpiece; An eddy current flaw detection device (40) comprises a plurality of eddy current flaw detection mechanisms, wherein the eddy current flaw detection mechanisms comprise a detection station, wherein a first eddy current flaw detection module is arranged on one side of the detection station, wherein the first eddy current flaw detection module comprises an inner eddy current flaw detection module (46) and a small-diameter eddy current flaw detection module (47), and wherein a second eddy current flaw detection module is arranged on the other side of the detection station, wherein the second eddy current flaw detection module comprises a large-diameter eddy current flaw detection module (48) and a spline eddy current flaw detection module (49); An ultrasonic detection device (50) comprises a first centering servo clamping mechanism (53), and an ultrasonic flaw detection mechanism and an ultrasonic thickness measurement mechanism arranged on both sides of the first centering servo clamping mechanism (53); A discharge device (60) for unloading the hollow shaft; NG material box (70), used for storing unqualified workpieces; A control system is used to control the working process of a circular runout detection device (20), an eddy current flaw detection device (40), and an ultrasonic detection device (50), and to read and judge the data collected and the images acquired by the circular runout detection device (20), the eddy current flaw detection device (40), and the ultrasonic detection device (50).

2. A hollow shaft nondestructive testing device according to claim 1, characterized in that: The eddy current flaw detection device (40) comprises a first eddy current flaw detection mechanism (41) and a second eddy current flaw detection mechanism (42), wherein the first eddy current flaw detection mechanism (41) comprises a first detection station (411), and the second eddy current flaw detection mechanism (42) comprises a second detection station (421), and the first detection station (411) and the second detection station (421) both comprise a first servo module (43) arranged on a second bracket, and the first servo module (43) drives a centering wheel module (44) through a belt drive assembly, The centering wheel module (44) comprises a first wheel group (441) and a second wheel group (442) opposite to the first wheel group (441); the first wheel group (441) and the second wheel group (442) each comprise two first driven wheels (4411); a plurality of fixed jaw modules (45) are arranged between the centering wheel modules (44); the fixed jaw modules (45) comprise a plurality of pneumatic jaws (451); and a second driven wheel (452) is arranged at the end of the pneumatic jaw (451).

3. The hollow shaft nondestructive testing equipment according to claim 2, characterized in that: A first eddy current flaw detection module is arranged on the left side of the first inspection station (411), a second eddy current flaw detection module is arranged on the right side of the first inspection station (411), a second eddy current flaw detection module is arranged on the left side of the second inspection station (421), and a first eddy current flaw detection module is arranged on the right side of the second inspection station (421), the small-diameter eddy current flaw detection module (47), the large-diameter eddy current flaw detection module (48) and the spline eddy current flaw detection module (49) all include a second linear module (471) arranged on a second bracket, The stroke of the second linear module (471) of the large-diameter eddy current flaw detection module (48) is more than half of the width of the first inspection station (411) and the second inspection station (421). A first base (472) is arranged on the second linear module (471), and a first double-axis cylinder (473) for driving is arranged on the first base (472). A first mounting bracket (474) is arranged on the first double-axis cylinder (473), and an eddy current flaw detection probe (475) is installed on the mounting bracket.

4. The hollow shaft nondestructive testing equipment according to claim 3 is characterized in that: The inner eddy current flaw detection module (46) comprises a second linear module (471) arranged on a second bracket, the second linear module (471) is provided with a second base (461), the second base (461) is provided with a second double-axis cylinder (462) for driving, the second double-axis cylinder (462) is provided with a first sensor (4621) with a detection port arranged in a horizontal direction, the second double-axis cylinder (462) drives a second mounting bracket (463), and the side wall of the second mounting bracket (463) is provided with a second sensor (4621) arranged in a horizontal direction. A second sensor (464) is provided with a detection port arranged in a vertical direction, a group of guide rods (465) are provided on the second mounting bracket (463), the guide rods (465) can be slidably connected to the third mounting bracket (466), a slider (467) is provided on the third mounting bracket (466), the slider (467) is slidably connected to the slide rail (468), a fourth mounting bracket (469) is provided on the slide rail (468), and an eddy current flaw detection probe (475) is installed on the fourth mounting bracket (469).

5. The hollow shaft nondestructive testing equipment according to claim 1, characterized in that: The feeding device (10) comprises a first frame (11), a feeding mechanism (12) is arranged on the first frame (11), the feeding mechanism (12) comprises a plurality of feeding plates (121) stacked up and down and having a certain inclination angle, width-adjustable enclosure plates (122) are arranged on both sides of the feeding plates (121), a pair of arc-shaped guide plates (123) for guiding workpieces downward are symmetrically arranged at the tail of the feeding plates (121) located at the upper layer, and a guide assembly (124) movable up and down is abutted at the tail of the feeding plates (121) located at the bottom layer, the guide assembly (124) being driven by a driving cylinder, and the guide assembly (124) comprises a plurality of feeding plates (121) stacked up and down and having a certain inclination angle, and a width-adjustable enclosure plate (122) is arranged on both sides of the feeding plates (121), a pair of arc-shaped guide plates (123) for guiding workpieces downward are symmetrically arranged at the tail of the feeding plates (121) located at the bottom layer The loading plate (121) abuts against a first material guide plate (1241), and a second material guide plate (1242) fixedly connected to the first material guide plate (1241), the height of the second material guide plate (1242) being higher than the height of the first material guide plate (1241), a third material guide plate (1243) fixedly arranged on the first frame (11) being arranged between the first material guide plate (1241) and the second material guide plate (1242), the tops of the first material guide plate (1241), the second material guide plate (1242) and the third material guide plate (1243) having a certain inclination angle, and the second material guide plate (1242) abuts against a fork material transfer mechanism (13) for transferring workpieces one by one.

6. The hollow shaft nondestructive testing equipment according to claim 1, characterized in that: The circular runout detection device (20) comprises a second centering servo clamping mechanism (21), the second centering servo clamping mechanism (21) comprises a supporting body (211) slidably arranged on the first frame (11), a centering servo module (212) is arranged on the supporting body (211), a top cone chuck (213) for fixing the workpiece is arranged on the centering servo module (212), a plurality of fork brackets (214) are arranged in the middle of the centering servo module (212), a plurality of groups of slidable runout detection mechanisms (22) are arranged at the bottom of the centering servo module (212), the runout detection mechanism (22) comprises a third base (221) slidably arranged on the first frame (11) and a lever detection assembly (222) arranged on the third base (221), and an NG material box (70) is arranged in front of the circular runout detection device (20).

7. The hollow shaft nondestructive testing equipment according to claim 1, characterized in that: The workpiece transfer device (30) comprises a gantry support (31) arranged around the eddy current flaw detection device (40), a first linear module (32) is arranged above the gantry support (31), and the first linear module (32) is provided with a loading transverse movement mechanism (33), a detection transverse movement mechanism (34), and a unloading and standard sample shifting mechanism (35).

8. The hollow shaft nondestructive testing device according to claim 1, characterized in that: The first centering servo clamping mechanism (53) comprises a supporting body (211) slidably arranged on the second frame, a centering servo module (212) is arranged on the supporting body (211), a top cone chuck (213) for fixing the workpiece is arranged on the centering servo module (212), a plurality of shift fork brackets (214) are arranged in the middle of the centering servo module (212), the ultrasonic flaw detection mechanism comprises a third linear module (511) arranged on the second frame, a fourth base (512) is arranged on the third linear module (511), a double-axis cylinder with an inclination angle of A is arranged on the fourth base (512), a first fixed bracket (514) is installed on the double-axis cylinder, and an ultrasonic flaw detection mechanism (214) is arranged in the first fixed bracket (514). An ultrasonic flaw detection probe (515) is provided, wherein a first water inlet (5141) is provided on a side wall of the first fixed support (514), the ultrasonic thickness measuring mechanism comprises a double-axis cylinder arranged at the bottom of a third base (221), a second fixed support (522) is installed on the double-axis cylinder, an ultrasonic thickness measuring probe (523) is arranged in the second fixed support (522), a second water inlet (5221) is provided on the side wall of the second fixed support (522), a water storage tank (54) is provided at the bottom of the support body (211), a water outlet (541) is provided on the side wall of the water storage tank (54), the water outlet (541) is connected to a circulating water coupling system, and the circulating water coupling system supplies water to the first water inlet (5141) and the second water inlet (5221).

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