A magnetic particle flaw detection device for a center hole of a forged rotor

Abstract

The present application relates to the technical field of magnetic particle flaw detection, and particularly relates to a magnetic particle flaw detection device for a center hole of a forged rotor, wherein the rotor for flaw detection is clamped on the base of the magnetic particle flaw detection device through a support frame; the magnetic particle flaw detection device comprises a moving mechanism, and the moving mechanism further comprises a walking module, a switching module and a cleaning module; the walking module is used to drive a magnetizing head, a spraying head and a developing probe to enter and exit the center hole of the rotor, so as to magnetize the rotor, spray magnetic suspension and develop magnetic marks; the walking module can drive the switching module to move, so that the magnetizing head, the spraying head and the developing probe can enter and exit the center hole of the rotor, the flaw detection step of the center hole of the rotor is facilitated, the operation steps are simplified, the operation process is streamlined, the efficiency of flaw detection is increased, and the magnetizing head and the developing probe can be prevented from being skewed when entering the center hole of the rotor, so that the stability of flaw detection is increased.

Description

Technical Field

[0001] This invention relates to the field of magnetic particle testing technology, and in particular to a magnetic particle testing device for the center hole of a forged rotor. Background Technology

[0002] The rotor is one of the key components of an engine, and its quality directly affects the engine's performance and reliability. The machining of the center hole is a crucial step in the rotor's manufacturing process. Due to the original quality of the steel ingot, and the influence of factors such as cutting tools and coolant during forging and machining, defects such as cracks, porosity, and air bubbles may appear in the center hole. Therefore, non-destructive testing of the rotor's center hole is an important means of ensuring rotor quality.

[0003] Currently, the main methods for inspecting rotor center holes include magnetic particle testing and ultrasonic testing. Magnetic particle testing can visually reflect the location and shape of defects through the adsorption and development of magnetic particles. However, due to the large depth and small diameter of the rotor center hole, the operability and effectiveness of magnetic particle testing are somewhat problematic. While ultrasonic testing can accurately detect the depth of defects, it cannot visually reflect the location, shape, and size of defects.

[0004] Existing magnetic particle inspection devices need to not only ensure the feasibility and accuracy of inspection, but also visually reflect the location, shape, and size of defects to solve the problem of deep hole inspection. When inspecting the rotor center hole, the inner wall of the center hole needs to be magnetized. Usually, the magnetizer is manually sent into the rotor center hole and rotated. The manual sending method is prone to tilting and collision with the inner wall of the rotor center hole, causing damage to the inner wall of the rotor center hole. Furthermore, after the magnetic powder is sprayed into the rotor center hole and magnetized, it is difficult to see the magnetic trace inside the rotor center hole. Therefore, it is necessary to send the developing probe into the rotor center hole for developing.

[0005] To address this, a magnetic particle inspection device for the center hole of a forged rotor is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a magnetic particle inspection device for the center hole of a forged rotor, so as to solve the problems mentioned in the background art, such as the magnetizer being prone to skew and the inconvenience of developing the center hole of the rotor.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a magnetic particle inspection device for the center hole of a forged rotor. The rotor for inspection is mounted on the base of the magnetic particle inspection device via a support frame. The magnetic particle inspection device includes a moving mechanism, which further includes a walking module, a switching module, and a cleaning module. The walking module is used to drive the magnetizing head, spray head, and developing probe into and out of the center hole of the rotor, thereby magnetizing, spraying magnetic suspension, and developing magnetic traces on the rotor. The switching module is used to switch the magnetizing head and developing probe entering and exiting the rotor in coordination with the walking module, thereby increasing the efficiency of inspection. The cleaning module can follow the walking module to spray dust onto the magnetizing head.

[0008] Preferably, the walking module includes a vertical plate fixed to the upper end of the base, a slide rail fixedly connected to the lower part of one side of the vertical plate, a movable seat sleeved on the slide rail, a first servo motor disposed inside the movable seat, a gear fixedly connected to the output shaft of the first servo motor and inserted into a slide groove opened at the upper end of the slide rail, the gear meshing with a rack, and the rack fixedly connected to the inner wall of one side of the slide groove.

[0009] Preferably, the switching module is set on a second servo motor on one side of the movable base. The output shaft of the second servo motor is fixedly connected to one end of a lead screw, and the other end of the lead screw is rotatably connected to the side wall of a slot opened at the upper end of the movable base. A mounting seat is set inside the slot, and the mounting seat is threadedly connected to the outer side of the lead screw. A third servo motor and a guide rod are installed at the upper end of the mounting seat. The output shaft of the third servo motor is fixedly connected to one end of a moving rod, and a magnetizing head is fixedly connected to the other end of the moving rod. A developing probe is set at one end of the guide rod.

[0010] Preferably, a power transmission line is fixedly connected to one side of the magnetizing head, and a magnetizing device main unit is fixedly connected to the other end of the power transmission line. The magnetizing device main unit is fixedly connected to the upright plate.

[0011] Preferably, a spray device main unit is fixedly installed on one side of the upright plate, a conveying pump is provided on the spray head, one end of the conveying pipe is fixedly connected to the conveying pump, and the other end of the conveying pipe is fixedly installed with the spray head.

[0012] Preferably, the spray head is tied to the outside of the magnetized head, and the delivery pipe is fixed along the outside of the moving rod.

[0013] Preferably, one end of the developing probe is fixedly connected to the signal line, and the other end of the signal line is fixedly connected to the display device host at the top of the base.

[0014] Preferably, the cleaning module includes a telescopic airbag fixedly connected between the upright plate and the movable seat. An air intake pump is provided on one side of the telescopic airbag, and an air supply pipe is connected to the other side of the air intake pump. The other end of the air supply pipe passes through the upright plate and is connected to an air distribution pipe. An air jet is provided on the inner side of the air distribution pipe, and the air jet is located in a guide hole opened on the upright plate.

[0015] Preferably, the air distribution pipe is arranged in a ring shape, and several sets of jet heads are evenly arranged in a ring shape on the inner side of the air distribution pipe.

[0016] Preferably, both the air intake pump and the air delivery pipe are equipped with one-way valves, and a collection box is installed on the base below the rotor.

[0017] The beneficial effects of this invention are:

[0018] 1. This invention, through the design of a walking module, can drive the switching module to move, allowing the magnetizing head, spray head, and developing probe to enter and exit the center hole of the rotor. This facilitates the flaw detection steps in the rotor center hole, simplifies the operation steps, streamlines the operation process, increases the efficiency of flaw detection, and prevents the magnetizing head and developing probe from skewing when entering the rotor center hole, thereby increasing the stability of flaw detection.

[0019] 2. This invention, through the design of a switching module in conjunction with a walking module, can drive the magnetizing head to rotate, facilitating the magnetizing head to uniformly magnetize the center hole of the rotor. Furthermore, it allows for switching the positions of the magnetizing head and the developing probe facing the center hole of the rotor, making it easier to select operating steps, greatly saving operating time, and enhancing the flaw detection effect.

[0020] 3. This invention, by binding the spray head to the outside of the magnetizing head and fixing the delivery pipe along the moving rod, allows the spray head to work in conjunction with the magnetizing head to spray, enabling the suspension and magnetization to proceed synchronously, increasing the utilization rate of the suspension. It also avoids interfering with the rotation of the magnetizing head, preventing it from affecting the normal entry and exit of the magnetizing head into the rotor's center hole. Furthermore, the guide rod supports the signal line, allowing the developing probe at the front end of the signal line to stably enter and exit the rotor's center hole, thereby enhancing the magnetic trace development effect.

[0021] 4. By designing a cleaning mechanism, this invention can utilize the power of the walking mechanism to drive the telescopic airbag to perform cyclic blowing and dust removal during the process of the magnetizing head and developing probe entering the rotor, thereby improving the magnetization effect of the rotor's central hole and the clarity of the developing image. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional schematic diagram of a magnetic particle inspection device for the center hole of a forged rotor according to an embodiment of the present invention.

[0024] Figure 2 This invention provides a magnetic particle inspection device for the center hole of a forged rotor. Figure 1 Schematic diagram of cross-section at point AA;

[0025] Figure 3 This invention provides a magnetic particle inspection device for the center hole of a forged rotor. Figure 2 Enlarged view of point C in the middle;

[0026] Figure 4 This invention provides a magnetic particle inspection device for the center hole of a forged rotor. Figure 2 Enlarged view of point D;

[0027] Figure 5 This is a partial three-dimensional schematic diagram of a magnetic particle inspection device for the center hole of a forged rotor according to an embodiment of the present invention. Figure 1 ;

[0028] Figure 6 This invention provides a magnetic particle inspection device for the center hole of a forged rotor. Figure 5 Schematic diagram of cross-section at point BB;

[0029] Figure 7 This is a partial three-dimensional schematic diagram of a magnetic particle inspection device for the center hole of a forged rotor according to an embodiment of the present invention. Figure 2 ;

[0030] Figure 8 This is a partial three-dimensional schematic diagram of a magnetic particle inspection device for the center hole of a forged rotor according to an embodiment of the present invention. Figure 3 .

[0031] The components in the diagram are labeled as follows: 1. Base; 2. Rotor; 3. Vertical plate; 4. Slide rail; 5. Moving seat; 6. First servo motor; 7. Slide groove; 8. Gear; 9. Rack; 10. Second servo motor; 11. Lead screw; 12. Slot; 13. Mounting seat; 14. Third servo motor; 15. Guide rod; 16. Moving rod; 17. Magnetizing head; 18. Power transmission line; 19. Magnetizing device main unit; 20. Spraying device main unit; 21. Conveying pump; 22. Conveying pipe; 23. Spray head; 24. Developing probe; 25. Display device main unit; 26. Telescopic airbag; 27. Air intake pump; 28. Air supply pipe; 29. ​​Air distribution pipe; 30. Jet nozzle; 31. One-way valve; 32. Guide hole; 33. Collection box. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0033] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] Please see Figures 1 to 8 This invention provides a technical solution: a magnetic particle inspection device for the center hole of a forged rotor. The base 1 of the magnetic particle inspection device is supported by a support frame, and the device includes a moving mechanism. The moving mechanism further includes a traveling module, a switching module, and a cleaning module. The traveling module drives the magnetizing head 17, the spray head 23, and the developing probe 24 into and out of the center hole of the rotor 2, thereby magnetizing, spraying magnetic suspension, and developing magnetic traces on the rotor 2. The switching module works with the traveling module to switch the magnetizing head 17 and the developing probe 24 as they enter and exit the rotor 2, increasing the efficiency of the inspection. The cleaning module follows the traveling module to perform air jet dust removal on the magnetizing head 17. Figure 2 and Figure 3 as well as Figure 6As shown, when inspecting the center hole of rotor 2, the inner wall of the center hole needs to be magnetized. The magnetizing head 17 is usually manually inserted into the center hole of rotor 2 for rotation. However, this manual insertion method is prone to skewness and collision with the inner wall of the center hole of rotor 2, causing damage. The walking module includes a vertical plate 3 fixed to the upper end of the base 1. A slide rail 4 is fixedly connected to the lower part of one side of the vertical plate 3. A movable seat 5 is fitted onto the slide rail 4. A first servo motor 6 is installed inside the movable seat 5. The output shaft of the first servo motor 6 is fixedly connected to a gear 8 and inserted into a groove 7 opened at the upper end of the slide rail 4. The gear 8 meshes with teeth. The rack 9 is fixedly connected to the inner wall of one side of the slide groove 7. In use, the first servo motor 6 drives the gear 8 to rotate. Because the gear 8 meshes with the rack 9, and the rack 9 is fixed in the slide groove 7 on the slide rail 4, the moving seat 5 moves on the slide rail 4, which is beneficial for driving the switching module to move. This allows the magnetizing head 17, the spray head 23, and the developing probe 24 to enter and exit the center hole of the rotor 2, which facilitates the flaw detection steps of the center hole of the rotor 2, simplifies the operation steps, streamlines the operation process, increases the efficiency of flaw detection, and prevents the magnetizing head 17 and the developing probe 24 from being skewed when entering the center hole of the rotor 2, thus increasing the stability of flaw detection.

[0035] As one embodiment of the present invention, such as Figure 5 and Figure 6 As shown, because the magnetic powder sprayed into the center hole of rotor 2 magnetizes and attracts magnetic particles, it is difficult to see the magnetic trace inside the center hole of rotor 2. Therefore, it is necessary to send the developing probe 24 into the center of rotor 2 for developing. The switching module is set on one side of the moving base 5. The output shaft of the second servo motor 10 is fixedly connected to one end of the lead screw 11. The other end of the lead screw 11 is rotatably connected to the side wall of the slot 12 opened at the upper end of the moving base 5. The slot 12 is provided with a mounting base 13. The outer side of the lead screw 11 is threadedly connected to the mounting base 13. The upper end of the mounting base 13 is equipped with a third servo motor 14 and a guide rod 15. The output shaft of the third servo motor 14 is fixedly connected to one end of the moving rod 16. The other end of the moving rod 16 is fixed. The device is connected to a magnetizing head 17, and a developing probe 24 is installed at one end of a guide rod 15. In use, the second servo motor 10 drives the lead screw 11 to rotate. Because the lead screw 11 is threadedly connected to a mounting base 13, which is placed in a slot 12, the mounting base 13 moves within the slot 12. Then, the third servo motor 14 is started, and the third servo motor 14 drives the magnetizing head 17 to rotate reciprocally via a moving rod 16. This facilitates the rotation of the magnetizing head 17, making it easier for the magnetizing head 17 to evenly magnetize the center hole of the rotor 2. The positions of the magnetizing head 17 and the developing probe 24 facing the center hole of the rotor 2 can be switched, making it easier to select the operation steps, greatly saving operation time and enhancing the flaw detection effect.

[0036] As one embodiment of the present invention, such as Figure 5 and Figure 7 As shown, because magnetic suspension liquid needs to be sprayed onto the center hole of rotor 2 before magnetization flaw detection can be performed, the spraying of magnetic suspension liquid and magnetization need to be used in combination. A power transmission line 18 is fixedly connected to one side of the magnetization head 17, and the other end of the power transmission line 18 is fixedly connected to the magnetization device host 19. The magnetization device host 19 is fixedly connected to the vertical plate 3. The magnetization device host 19 provides power and other support to the magnetization head 17 through the power transmission line 18. A spray device host 20 is fixedly installed on one side of the vertical plate 3. A delivery pump 21 is installed on the spray head 23. One end of the delivery pipe 22 is fixedly connected to the delivery pump 21, and the spray head 23 is fixedly installed on the other end of the delivery pipe 22. The spray device host 20 provides suspension liquid to the spray head 23 through the delivery pipe 22. The spray head 23 is tied to the outside of the magnetization head 17, and the delivery pipe 22 runs along... The outer side of the moving rod 16 is fixed, and one end of the developing probe 24 is fixedly connected to the signal line. The other end of the signal line is fixedly connected to the display device host 25 on the upper end of the base 1. The image recorded by the developing probe 24 is transmitted to the display device host 25 for display through the signal line. By binding the spray head 23 to the outer side of the magnetizing head 17 and fixing the delivery tube 22 along the moving rod 16, the spray head 23 can cooperate with the magnetizing head 17 to spray, so that the suspension and magnetization are carried out synchronously, increasing the utilization rate of the suspension. It will not interfere with the rotation of the magnetizing head 17, and will avoid affecting the normal entry and exit of the magnetizing head 17 into the center hole of the rotor 2. Furthermore, with the support of the guide rod 15, the signal line can be extended, so that the developing probe 24 at the front end of the signal line can stably enter and exit the center hole of the rotor 2, thereby increasing the magnetic trace development effect.

[0037] As one embodiment of the present invention, such as Figure 2 and Figure 4 as well as Figure 8As shown, because the magnetizing head 17 and the developing probe 24 are prone to dust accumulation due to prolonged placement, which can affect the magnetization effect and the clarity of the developing image, the cleaning module includes a telescopic airbag 26 fixedly connected between the upright plate 3 and the moving base 5. An air intake pump 27 is provided on one side of the telescopic airbag 26, and an air supply pipe 28 is connected to the other side of the air intake pump 27. The other end of the air supply pipe 28 passes through the upright plate 3 and is connected to an air distribution pipe 29. An air jet head 30 is provided inside the air distribution pipe 29, and the air jet head 30 is located within a guide hole 32 opened on the upright plate 3. The air distribution pipe 29 is arranged in a ring, and several sets of air jet heads 30 are evenly arranged in a ring on the inner side of the air distribution pipe 29. One-way valves 31 are provided on both the air intake pump 27 and the air supply pipe 28. A collection box 33 is provided on the base 1 below the rotor 2. The collection box 33 can collect the magnetic suspension flowing out of the center hole of the rotor 2. During use, the walking module... When the moving seat 5 drives the magnetizing head 17 or the developing probe 24 into the center hole of the rotor 2, the moving seat 5 compresses the telescopic air bag 26, causing the gas inside the telescopic air bag 26 to enter the air distribution pipe 29 through the air supply pipe 28. After the air distribution pipe 29 evenly distributes the gas, it blows and removes dust from the outside of the magnetizing head 17 and the developing probe 24 that have passed through the vertical plate 3 through the jet nozzle 30. Then, when the moving seat 5 drives the magnetizing head 17 and the developing probe 24 away from the center hole of the rotor 2, the moving seat 5 drives the telescopic air bag 26 to stretch, causing the telescopic air bag 26 to be replenished with gas through the air intake pump 27. The one-way valve 31 is used to prevent the gas in the air intake pump 27 and the air supply pipe 28 from flowing back. This is beneficial for using the power of the walking mechanism to drive the telescopic air bag 26 to perform circulating blowing and dust removal during the process of the magnetizing head 17 and the developing probe 24 entering the rotor 2, thereby improving the magnetization effect on the center hole of the rotor 2 and the clarity of the developing.

[0038] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0039] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A magnetic particle inspection device for the center hole of a forged rotor, wherein a rotor (2) for inspection is mounted on the base (1) of the magnetic particle inspection device via a support frame, characterized in that: The magnetic particle inspection device includes a moving mechanism, which further includes a walking module, a switching module, and a cleaning module. The walking module is used to drive the magnetizing head (17), the spray head (23), and the developing probe (24) into and out of the center hole of the rotor (2), thereby magnetizing the rotor (2), spraying magnetic suspension, and developing magnetic traces. The switching module is used to cooperate with the walking module to switch the magnetizing head (17) and the developing probe (24) entering and exiting the rotor (2), thereby increasing the efficiency of the inspection. The cleaning module can follow the walking module to spray dust from the magnetizing head (17). The switching module is set on a second servo motor (10) on one side of the moving base (5). The output shaft of the second servo motor (10) is fixedly connected to one end of a lead screw (11). The other end of the lead screw (11) is rotatably connected to the side wall of the slot (12) opened at the upper end of the moving base (5). The slot (12) is provided with a mounting base (13). The outer side of the lead screw (11) is threadedly connected to the mounting base (13). The upper end of the mounting base (13) is equipped with a third servo motor (14) and a guide rod (15). The output shaft of the third servo motor (14) is fixedly connected to one end of a moving rod (16). The other end of the moving rod (16) is fixedly connected to a magnetizing head (17). One end of the guide rod (15) is provided with a developing probe (24). The cleaning module includes a telescopic airbag (26) fixedly connected between the upright plate (3) and the movable seat (5). An air intake pump (27) is provided on one side of the telescopic airbag (26), and an air supply pipe (28) is connected to the other side of the air intake pump (27). The other end of the air supply pipe (28) passes through the upright plate (3) and is connected to an air distribution pipe (29). An air jet head (30) is provided on the inner side of the air distribution pipe (29), and the air jet head (30) is located in a guide hole (32) opened on the upright plate (3).

2. The magnetic particle inspection device for the center hole of a forged rotor according to claim 1, characterized in that, The walking module includes a vertical plate (3) fixed to the upper end of the base (1). A slide rail (4) is fixedly connected to the lower part of one side of the vertical plate (3). A movable seat (5) is sleeved on the slide rail (4). A first servo motor (6) is installed inside the movable seat (5). A gear (8) is fixedly connected to the output shaft of the first servo motor (6) and inserted into a slide groove (7) opened at the upper end of the slide rail (4). The gear (8) meshes with a rack (9). The rack (9) is fixedly connected to the inner wall of one side of the slide groove (7).

3. The magnetic particle inspection device for the center hole of a forged rotor according to claim 1, characterized in that, One side of the magnetizing head (17) is fixedly connected to a power transmission line (18), and the other end of the power transmission line (18) is fixedly connected to a magnetizing device host (19). The magnetizing device host (19) is fixedly connected to the upright plate (3).

4. The magnetic particle inspection device for the center hole of a forged rotor according to claim 2, characterized in that, A spray device main unit (20) is fixedly installed on one side of the upright plate (3), and a delivery pump (21) is provided on the spray head (23). The delivery pump (21) is fixedly connected to one end of the delivery pipe (22), and the other end of the delivery pipe (22) is fixedly installed with the spray head (23).

5. A magnetic particle inspection device for the center hole of a forged rotor according to claim 4, characterized in that, The spray head (23) is tied to the outside of the magnetized head (17), and the delivery pipe (22) is fixed along the outside of the moving rod (16).

6. The magnetic particle inspection device for the center hole of a forged rotor according to claim 1, characterized in that, The developing probe (24) is fixedly connected to one end of a signal line, and the other end of the signal line is fixedly connected to the display device host (25) on the upper end of the base (1).

7. The magnetic particle inspection device for the center hole of a forged rotor according to claim 1, characterized in that, The air distribution pipe (29) is arranged in a ring shape, and several sets of jet heads (30) are evenly arranged in a ring shape on the inner side of the air distribution pipe (29).

8. The magnetic particle inspection device for the center hole of a forged rotor according to claim 7, characterized in that, One-way valves (31) are provided on both the air pump (27) and the air pipe (28), and a collection box (33) is provided on the base (1) below the rotor (2).

Images