A stator oil hole detection device based on electrode induction and a detection method thereof

Abstract

This invention discloses a stator oil hole detection device and method based on electrode induction, aiming to provide a highly efficient stator oil hole detection device and method that significantly improves detection accuracy and reliability. The key technical features include a frame, a conveying mechanism for transporting the stator to be tested, an oil hole detection device located above the conveying mechanism, and a feeding and pushing assembly located below the conveying mechanism. The oil hole detection device includes a mounting base located above the frame, detection cylinders evenly distributed within the mounting base, air knives located at the ends of the cylinders, a driving assembly for rotating the mounting base, and detection components symmetrically arranged at both ends of the mounting base. Each detection component includes a mounting plate located above the mounting base and several electrode reaction pins fixed to the mounting plate. This invention is applicable to the field of stator oil hole detection technology.

Description

Technical Field

[0001] This invention relates to the field of stator oil hole detection technology, and more specifically, to a stator oil hole detection device and method based on electrode induction. Background Technology

[0002] In the field of motor manufacturing, the stator is one of the core components. To ensure that critical parts such as bearings receive adequate lubrication and heat dissipation during motor operation, the stator core is usually designed with multiple through-holes. During production, transportation, or assembly, these oil holes are easily blocked or partially blocked due to metal debris, impurities, or structural deformation. The patency of the oil holes directly affects the performance, lifespan, and operational reliability of the motor. Therefore, conducting a 100% patency test on the stator oil holes before motor assembly is a crucial step.

[0003] Currently, the industry primarily relies on air pressure testing to detect the patency of stator oil holes. This method involves sealing one end of the stator and introducing compressed air into the oil holes from the other end, then detecting pressure changes or leakage rates. However, this method has significant drawbacks: First, it typically only provides a comprehensive assessment of the overall flowability of all stator oil holes, failing to pinpoint the specific blockage. Second, for minor, partial blockages (i.e., "semi-blockages"), the pressure signal changes are not significant, resulting in insufficient detection sensitivity and a tendency to miss early-stage problems. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a stator oil hole detection device and method based on electrode induction that is highly efficient and greatly improves the accuracy and reliability of detection.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a stator oil hole detection device based on electrode induction, comprising a frame, a conveying mechanism for conveying a stator to be tested, an oil hole detection device located above the conveying mechanism, and a feeding and pushing assembly located below the conveying mechanism. The oil hole detection device includes a mounting base located above the frame, detection cylinders evenly distributed within the mounting base, an air knife located at the end of the cylinder, a driving assembly for driving the mounting base to rotate, and detection assemblies symmetrically arranged at both ends of the mounting base. The detection assembly includes a mounting plate located above the mounting base and several electrode reaction pins fixed on the mounting plate. The top surface of the mounting base is provided with a sliding groove adapted to each electrode induction pin. When each detection cylinder acts simultaneously on the outside of the stator, the mounting plates at the upper and lower ends are rotated to allow each pin to simultaneously insert into the stator oil hole. Air is blown through the air knife into the gap on the stator side wall that communicates with the oil hole, causing the upper and lower electrodes of the electrode reaction pin at the oil hole outlet to contact.

[0006] The present invention is further configured such that: the conveying mechanism includes a conveying guide rail arranged perpendicularly to the frame and a driving component for driving the stator to be tested to move along the conveying guide rail.

[0007] The present invention is further configured such that: the feeding and pushing component includes a feeding point, a tray disposed below the feeding point, a first cylinder for driving the tray to rise and fall, a pneumatic gripper penetrating the tray for contacting the inner wall of the stator, and a second cylinder for driving the pneumatic gripper to open.

[0008] The present invention is further configured such that: the driving component includes a gear disposed on one side of the bottom of the mounting base, a rack and pinion slide disposed on the worktable and meshing with the gear, a third cylinder for driving the rack and pinion slide to move, and a limiting cover plate disposed on the bottom surface of the mounting base. When the third cylinder drives the rack and pinion slide to move, it causes the mounting base to rotate, so that the pin is located above the oil hole.

[0009] The present invention is further configured such that sealing rings are provided on the upper and lower sides of the contact surface between the air knife and the stator.

[0010] The present invention is further configured such that: one side of the splitting knife is provided with a mounting plate connected to the detection cylinder, and the structure of the other side is adapted to the outer wall of the stator to be detected; the upper surface of the air knife is provided with an air inlet and the contact surface with the stator to be detected is provided with an air outlet.

[0011] This application also provides a detection method for a stator oil hole detection device based on electrode induction, comprising the following steps:

[0012] S1. Loading and positioning judgment stage: The drive unit works, moving the stator to be tested along the conveyor rail to the loading point. The first cylinder drives the tray to rise to the testing station and is located at the bottom of the stator to be tested. At the same time, the second cylinder drives the gripper to rise to the center of the inside of the stator to be tested, opening the gripper so that the gripper abuts against the inner wall of the stator to be tested.

[0013] S11. Stator inner wall clamping confirmation: The system detects the pressure or displacement signal of the second cylinder to determine whether the gripper has reached the preset opening position.

[0014] If the condition is not met, it is determined to be a feeding failure, the system will alarm and pause the process, indicating that the stator clamping has failed;

[0015] If successful, the process continues;

[0016] S2. Stator positioning judgment and detection: The positioning sensor installed in the oil hole detection device is used to detect whether the stator under test has accurately reached the preset position.

[0017] If the stator positioning signal is not detected within the specified time, the system will alarm and indicate a delivery positioning abnormality.

[0018] If a positioning signal is received, the conveyor stops operating and the process continues;

[0019] S3, Oil hole detection:

[0020] All the detection cylinders operate simultaneously, pushing the air knife closer to the center of the stator to be tested, ensuring tight contact between the air knife end face and the outer side of the stator. The sealing ring ensures the airtightness of the contact surface. Further, the mounting base begins to rotate, causing several electrode reaction pins to simultaneously position themselves above the various oil holes on the stator along the sliding groove. The air knife activates, blowing compressed air at a constant pressure into the gaps on the stator sidewall that communicate with the oil holes, while simultaneously acquiring signals from all the electrode reaction pins in real time.

[0021] Qualification: If all electrodes corresponding to oil holes generate a stable electrical signal within a specified time after the air blowing is started, then all oil holes are considered to be unobstructed and the process continues.

[0022] Blockage determination: If any one or more oil holes have no electrical signal at their corresponding electrodes, the oil hole is determined to be blocked. The number of the blocked hole is recorded, the blocked hole is processed, and steps S1 to S3 are repeated for re-inspection. If the re-inspection is qualified, it is processed as a qualified product; if it is still abnormal, it is processed as a non-qualified product.

[0023] Added suspected anomaly detection: If one or more electrode signals are intermittently switched on or off or the signal is weak (below the threshold), it is determined that the oil hole is partially blocked or foreign matter is stuck. This detection can detect early hidden dangers before complete blockage.

[0024] The beneficial effects of this invention are:

[0025] 1. Through the coordinated operation of the conveying mechanism, the feeding and pushing component, and the detection device, the automatic feeding, positioning, detection, and unloading of the stator are achieved, forming a complete automated detection closed loop. This greatly reduces manual intervention and significantly improves detection efficiency. The conveying mechanism enables automated transport of the stator to be tested, orderly delivering it to the detection position and avoiding the inefficiency and instability of manual handling. The feeding and pushing component, located below the conveying mechanism, can accurately push the stator to the appropriate detection position, ensuring accurate positioning of the stator during the detection process. The oil hole detection device adopts a combination of electrode induction and air blowing detection. The electrode reaction pins located at the upper and lower ends of the mounting base can be simultaneously inserted into the stator oil holes under the action of the mounting base, ensuring synchronous detection of multiple oil holes and improving detection speed. Air is blown into the oil hole by the air knife, causing the upper and lower electrodes of the electrode reaction pins to contact, and the patency of the oil hole is determined by electrode induction. This method can effectively detect whether there are blockages, impurities, or other problems inside the oil hole. Compared to a single detection method, the combination of multiple detection methods greatly improves the accuracy of detection, reduces the false judgment rate, and ensures that the quality of the stator oil holes meets production requirements.

[0026] 2. The conveying mechanism employs a combined design of conveying guide rails and drive components arranged perpendicularly to the frame, offering significant advantages. The perpendicularly intersecting conveying guide rails provide a precise movement path for the stator under test, ensuring it accurately reaches the loading point along a fixed trajectory during transport, avoiding positional deviations and improving the accuracy and stability of the test. The drive components provide reliable power for the stator's movement, allowing precise control of the stator's conveying speed and position according to actual testing needs, making the entire conveying process efficient and orderly. Sealing rings on the upper and lower sides of the contact surface between the air knife and the stator effectively prevent gas leakage during the critical testing step of blowing air into the oil holes. When the air knife contacts the stator, the sealing rings form a closed space, ensuring that the gas blown into the oil holes acts concentrated inside, allowing for better contact between the upper and lower electrodes of the electrode reaction pin, thus more accurately detecting whether the oil holes are unobstructed.

[0027] 3. The clearly defined loading point provides the stator with an accurate starting position, facilitating subsequent operations. The first cylinder drives the pallet to lift, quickly raising the stator from its initial position to the appropriate height of the conveying mechanism, achieving efficient vertical movement. This rapid lifting action reduces the time consumed during stator loading and unloading, making the entire inspection process more compact and significantly increasing the number of inspections per unit time, thereby saving time costs and improving production efficiency. The combined use of the gripper and the second cylinder achieves precise positioning and secure fixation of the stator. The gripper penetrates the pallet and abuts against the inner wall of the stator. Driven by the second cylinder, the gripper expands, adaptively adjusting according to the inner diameter of the stator to ensure a tight fit between the gripper and the inner wall, preventing displacement or shaking of the stator during conveying and inspection. Through the meshing transmission of gears and rack and pinion slides, the linear motion of the third cylinder can be precisely converted into the rotation of the mounting base. This transmission method allows for precise control of the mounting bracket's rotation angle, ensuring that the electrode reaction pin is accurately positioned above the stator oil hole. Compared to some other complex transmission mechanisms, gear and rack transmission offers higher transmission accuracy, reduces positioning errors, and improves the accuracy and reliability of oil hole detection.

[0028] 4. The detection cylinder pushes the air knife close to the stator, the sealing ring ensures airtightness, the mounting plate drives the electrode reaction pin to insert into the oil hole, and the air knife blows in compressed air. These series of actions are closely coordinated to achieve a comprehensive detection of the stator oil holes. Taking the fact that stable electrical signals are generated by the electrodes corresponding to all oil holes within a specified time as the qualified standard, it ensures that only the stator with completely unobstructed oil holes can be judged as qualified, guaranteeing the product quality. For the situation where there is no electrical signal from the electrode corresponding to any one or more oil holes, it is judged that the oil hole is blocked, and the blocked hole position number is recorded for convenient subsequent processing. Through the re-inspection mechanism, it further ensures the effectiveness of dealing with the blocked oil holes and improves the qualified rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structure schematic diagram of the present invention;

[0030] Figure 2 It is a three-dimensional structure schematic diagram of the oil hole detection device;

[0031] Figure 3 It is a three-dimensional structure schematic diagram of the air knife;

[0032] Figure 4 It is a flowchart of an embodiment of the detection method of a stator oil hole detection device based on electrode induction;

[0033] Figure 1-4 Reference numerals: 1, frame; 2, mounting seat; 3, detection cylinder; 4, air knife; 5, mounting plate; 6, electrode reaction pin; 7, sliding groove; 8, conveying guide rail; 9, driving member; 10, tray; 11, first cylinder; 12, second cylinder; 13, gear; 14, rack slide plate; 15, third cylinder; 16, limit cover plate; 17, mounting plate; 18, air inlet hole; 19, air outlet hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] Refer to Figure 1-4 to further describe the embodiments of the present invention.

[0035] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right", etc. are used in the embodiments to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations during the use or operation of the device. For example, if the device in the figure is inverted, the element described as being "below" other elements or features will be positioned "above" other elements or features. Therefore, the exemplary term "lower" can include both the upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0036] Moreover, relational terms such as “first” and “second” are used merely to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0037] Figures 1 to 4 The illustrated stator oil hole detection device based on electrode induction includes a frame 1. The frame 1 is equipped with a conveying mechanism for transporting the stator to be tested, an oil hole detection device located above the conveying mechanism, and a feeding and pushing component located below the conveying mechanism. This achieves automatic feeding, positioning, detection, and unloading of the stator, forming a complete automated detection closed loop. This greatly reduces manual intervention and significantly improves detection efficiency. The conveying mechanism enables automated transport of the stator to be tested, orderly delivering it to the detection position and avoiding the inefficiency and instability of manual handling. The feeding and pushing component, located below the conveying mechanism, can accurately push the stator to the appropriate detection position, ensuring accurate positioning of the stator during the detection process. The oil hole detection device includes a mounting base 2 mounted above a frame 1, detection cylinders 3 evenly distributed within the mounting base 2, air knives 4 positioned at the ends of the cylinders, a drive assembly for rotating the mounting base 2, and detection components symmetrically positioned at both ends of the mounting base 2. Each detection component includes a mounting plate 5 mounted above the mounting base 2 and several electrode reaction pins 6 fixed to the mounting plate 5. The top surface of the mounting base 2 has sliding grooves 7 adapted to each electrode sensing pin. The oil hole detection device employs a combination of electrode sensing and air blowing detection. The electrode reaction pins 6 positioned at the upper and lower ends of the mounting base 2 can be simultaneously inserted into the stator oil holes under the drive of the mounting base 2, ensuring synchronous detection of multiple oil holes and improving detection speed. Air knives 4 blow air into the oil holes, causing the upper and lower electrodes of the electrode reaction pins 6 to contact, and electrode sensing is used to determine whether the oil hole is unobstructed. This method can effectively detect whether there are blockages or impurities inside the oil holes. Compared to a single detection method, the combination of multiple detection methods greatly improves detection accuracy, reduces the false judgment rate, and ensures that the quality of the stator oil holes meets production requirements.

[0038] The conveying mechanism includes a conveying guide rail 8 perpendicularly arranged to the frame 1 and a driving component 9 for driving the stator to be tested to move along the conveying guide rail 8. The perpendicularly arranged conveying guide rail 8 provides a precise movement path for the stator to be tested, ensuring that the stator accurately reaches the loading point along a fixed trajectory during the conveying process, avoiding positional deviations, thereby improving the accuracy and stability of the test. The driving component 9 provides reliable power for the movement of the stator and can precisely control the conveying speed and position of the stator according to the actual test requirements, making the entire conveying process efficient and orderly.

[0039] The feeding and pushing component includes a feeding point, a tray 10 positioned below the feeding point, a first cylinder 11 driving the tray 10 to rise and fall, a gripper penetrating the tray 10 to contact the inner wall of the stator, and a second cylinder 12 driving the gripper to open. The clearly defined feeding point provides the stator with an accurate starting position, facilitating subsequent operations. The first cylinder 11 drives the tray 10 to rise and fall, quickly lifting the stator from its initial position to the appropriate height of the conveying mechanism, achieving efficient vertical movement. This rapid lifting action reduces the time consumed during the stator loading and unloading process, making the entire inspection process more compact and significantly increasing the number of inspections per unit time, thereby saving time costs and improving production efficiency. The combined use of the gripper and the second cylinder 12 achieves precise positioning and secure fixation of the stator. The gripper penetrates the tray 10 and contacts the inner wall of the stator. Driven by the second cylinder 12, the gripper can adaptively adjust according to the inner diameter of the stator, ensuring a tight fit between the gripper and the inner wall of the stator, preventing displacement or shaking of the stator during conveying and inspection.

[0040] The drive assembly includes a gear 13 disposed on one side of the bottom of the mounting base 2, a rack and pinion slide 14 disposed on the worktable and meshing with the gear 13, a third cylinder 15 that drives the rack and pinion slide 14 to move, and a limiting cover plate 16 disposed on the bottom surface of the mounting base 2. Through the meshing transmission between the gear 13 and the rack and pinion slide 14, the linear motion of the third cylinder 15 can be accurately converted into the rotation of the mounting base 2. This transmission method allows the rotation angle of the mounting base 2 to be precisely controlled, thereby ensuring that the electrode reaction pin 6 can be accurately positioned above the stator oil hole. Compared with some other complex transmission mechanisms, the gear 13 rack and pinion transmission has higher transmission accuracy, reduces positioning errors, and improves the accuracy and reliability of oil hole detection.

[0041] The air knife 4 is also equipped with sealing rings on the upper and lower sides of the contact surface with the stator. During the testing process, blowing air into the oil hole by the air knife 4 is a key testing step, and the sealing ring can effectively prevent gas leakage. When the air knife 4 contacts the stator, the sealing ring forms a closed space, ensuring that the gas blown into the oil hole can be concentrated inside the oil hole, so that the upper and lower electrodes of the electrode reaction pin 6 can make better contact, thereby more accurately detecting whether the oil hole is unobstructed.

[0042] This application also provides a stator oil hole detection device based on electrode induction, characterized in that the air knife 4 is provided with sealing rings on the upper and lower sides of the contact surface with the stator.

[0043] One side of the air knife is equipped with a mounting plate 17 connected to the detection cylinder 3, and the structure on the other side is adapted to the outer wall of the stator to be tested. This allows the air knife 4 to fit tightly against the outer wall of the stator under the push of the detection cylinder 3. This tight fit not only ensures the sealing during air blowing, reduces gas leakage, and improves the blowing effect, but also avoids detection errors caused by gas leakage. The upper surface of the air knife 4 is provided with an air inlet 18 and the contact surface with the stator to be tested is provided with an air outlet 19. This allows gas to enter the interior of the air knife 4 efficiently from the air inlet 18 and be evenly blown into the oil hole gaps of the stator through the air outlet 19, ensuring that each oil hole receives sufficient airflow, thereby improving the accuracy and reliability of the test.

[0044] This application also provides a detection method for a stator oil hole detection device based on electrode induction, comprising the following steps:

[0045] S1. Loading and positioning judgment stage: The drive unit 9 works, driving the stator to be tested to move along the conveyor rail 8 to the loading point. The first cylinder 11 drives the tray 10 to rise to the testing station and is located at the bottom of the stator to be tested. At the same time, the second cylinder 12 drives the gripper to rise to the center position inside the stator to be tested, opens the gripper, and makes the gripper abut against the inner wall of the stator to be tested.

[0046] S11. Stator inner wall clamping confirmation: The system detects the pressure or displacement signal of the second cylinder 12 to determine whether the pneumatic gripper has reached the preset opening position.

[0047] If the condition is not met, it is determined to be a feeding failure, the system will alarm and pause the process, indicating that the stator clamping has failed;

[0048] If successful, the process continues;

[0049] S2. Stator positioning judgment and detection: The positioning sensor installed in the oil hole detection device is used to detect whether the stator under test has accurately reached the preset position.

[0050] If the stator positioning signal is not detected within the specified time, the system will alarm and indicate a delivery positioning abnormality.

[0051] If a positioning signal is received, the conveyor stops operating and the process continues;

[0052] S3, Oil hole detection:

[0053] All the detection cylinders 3 act simultaneously, pushing the air knife 4 towards the middle of the stator to be detected, making the end face of the air knife 4 closely contact the outer side of the stator to be detected, and the sealing ring ensures the airtightness of the contact surface; further, the mounting seat 2 starts to rotate, driving a number of electrode reaction pins 6 to be simultaneously located above each oil hole of the stator along the sliding groove 7. The air knife 4 is started, and compressed air with a constant pressure is blown into the gap communicating with the oil hole left on the side wall of the stator, and the signals of all the electrode reaction pins 6 are collected in real time:

[0054] Qualified judgment: After the air blowing is started, if stable electrical signals are generated by all the electrodes corresponding to the oil holes within the specified time, it is judged that all the oil holes are unblocked, and the process continues;

[0055] Blockage judgment: If there is no electrical signal from any one or more electrodes corresponding to the oil holes all the time, it is judged that the oil hole is blocked, and the number of the blocked hole position is recorded. The blocked hole position is processed, and the steps S1 to S3 are repeated for re-inspection. If the re-inspection is qualified, it is processed as a qualified product; if it is still abnormal, it is processed as an unqualified product;

[0056] New suspected abnormality judgment: If the signals of one or more electrodes show intermittent on-off or weak signals (lower than the threshold), it is judged that the oil hole is semi-blocked or there is foreign object adhesion. This judgment can detect early hidden dangers before complete blockage.

[0057] The detection cylinder 3 pushes the air knife 4 close to the stator, the sealing ring ensures airtightness, the mounting disc 5 drives the electrode reaction pin 6 to insert into the oil hole, and the air knife 4 blows in compressed air. These series of actions are closely coordinated to achieve a comprehensive detection of the stator oil holes. Taking that stable electrical signals are generated by all the electrodes corresponding to the oil holes within the specified time as the qualified standard, it ensures that only the stator with completely unblocked oil holes can be judged as qualified, guaranteeing the product quality. For the situation where there is no electrical signal from any one or more electrodes corresponding to the oil holes all the time, it is judged that the oil hole is blocked, and the number of the blocked hole position is recorded for convenient subsequent processing. Through the re-inspection mechanism, the effectiveness of the treatment of the blocked oil holes is further ensured, improving the qualified rate of the products.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A stator oil hole detection device based on electrode induction, comprising a frame (1), characterized in that, The frame (1) is provided with a conveying mechanism for conveying the stator to be tested, an oil hole detection device located above the conveying mechanism, and a feeding and pushing component located below the conveying mechanism. The oil hole detection device includes a mounting base (2) set above the frame (1), detection cylinders (3) evenly distributed in the mounting base (2), an air knife (4) set at the end of the cylinder, a driving component for driving the mounting base (2) to rotate, and detection components symmetrically set at both ends of the mounting base (2). The detection component includes a mounting plate (5) set above the mounting base (2) and several electrode reaction pins (6) fixed on the mounting plate (5). The top surface of the mounting base (2) is provided with a sliding groove (7) adapted to each electrode sensing pin. When each detection cylinder (3) acts on the outside of the stator at the same time, the mounting base (2) at the upper and lower ends is rotated so that each pin is inserted into the stator oil hole at the same time. Air is blown into the gap left on the side wall of the stator through the air knife (4) so ​​that the upper and lower electrodes of the electrode reaction pin (6) at the oil hole outlet contact each other. The feeding and pushing component includes a feeding point, a tray (10) set below the feeding point, a first cylinder (11) for driving the tray (10) to rise and fall, a gripper that penetrates the tray (10) to abut against the inner wall of the stator, and a second cylinder (12) for driving the gripper to open. The air knife (4) has an installation plate (17) connected to the detection cylinder (3) on one side, and the structure on the other side is adapted to the outer wall of the stator to be tested. The air knife (4) has an air inlet (18) on its upper surface and an air outlet (19) on its contact surface with the stator to be tested. The standard for qualification is that all electrodes corresponding to oil holes generate stable electrical signals within a specified time, ensuring that only stators with completely unobstructed oil holes can be judged as qualified.

2. The stator oil hole detection device based on electrode induction according to claim 1, characterized in that, The conveying mechanism includes a conveying guide rail (8) that is perpendicular to the frame (1) and a drive component (9) for driving the stator to be tested to move along the conveying guide rail (8).

3. The stator oil hole detection device based on electrode induction according to claim 1, characterized in that, The drive assembly includes a gear (13) disposed on one side of the bottom of the mounting base (2), a rack slide plate (14) disposed on the worktable and meshing with the gear (13), a third cylinder (15) for driving the rack slide plate (14) to move, and a limiting cover plate (16) disposed on the bottom surface of the mounting base (2). When the third cylinder (15) drives the rack slide plate (14) to move, it drives the mounting base (2) to rotate, so that the pin is located above the oil hole.

4. The stator oil hole detection device based on electrode induction according to claim 1, characterized in that, The air knife (4) is also provided with sealing rings on the upper and lower sides of the contact surface with the stator.

5. A control method for a stator oil hole detection device based on electrode induction according to any one of claims 1-4, characterized in that, Includes the following steps: S1, Loading and Positioning Judgment Stage: The drive unit (9) works, driving the stator to be tested to move along the conveying guide rail (8) to the loading point. The first cylinder (11) drives the tray (10) to rise to the testing station and is located at the bottom of the stator to be tested. At the same time, the second cylinder (12) drives the gripper to rise to the center position inside the stator to be tested, opening the gripper so that the gripper abuts against the inner wall of the stator to be tested. S11, Stator inner wall clamping confirmation: By detecting the pressure or displacement signal of the second cylinder (12) through the system, it is determined whether the pneumatic gripper has reached the preset opening position; If the condition is not met, it is determined to be a feeding failure, the system will alarm and pause the process, displaying the message "Stator clamping failed"; If successful, the process continues; S2. Stator positioning judgment and detection: The positioning sensor installed in the oil hole detection device is used to detect whether the stator under test has accurately reached the preset position. If the stator positioning signal is not detected within the specified time, the system will alarm and indicate a delivery positioning abnormality. If a positioning signal is received, the conveyor stops operating and the process continues; S3, Oil hole detection: Each detection cylinder (3) operates simultaneously, pushing the air knife (4) closer to the center of the stator to be tested, so that the end face of the air knife (4) is in close contact with the outer side of the stator to be tested, and the sealing ring ensures the airtightness of the contact surface; further, the mounting base (2) begins to rotate, driving several electrode reaction pins (6) to be positioned above each oil hole of the stator along the sliding groove (7), the air knife (4) is activated, blowing compressed air at constant pressure into the gaps on the side wall of the stator that are connected to the oil holes, and collecting the signals of all electrode reaction pins (6) in real time: Qualification: If all electrodes corresponding to oil holes generate a stable electrical signal within a specified time after the air blowing is started, then all oil holes are considered to be unobstructed and the process continues. Blockage determination: If any one or more oil holes have no electrical signal at their corresponding electrodes, the oil hole is determined to be blocked. The number of the blocked hole is recorded, the blocked hole is processed, and steps S1 to S3 are repeated for re-inspection. If the re-inspection is qualified, it is processed as a qualified product; if it is still abnormal, it is processed as a non-qualified product. Added suspected anomaly detection: If one or more electrode signals are intermittently switched on or off or the signal is weak, it is determined that the oil hole is partially blocked or foreign matter is stuck. This detection can detect early hidden dangers before complete blockage.

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