A new energy automobile driving motor stator oil circuit detection equipment

Abstract

This invention relates to the field of stator oil hole detection technology, and discloses a stator oil circuit detection device for a new energy vehicle drive motor. The device includes a profile frame, a bottom welding frame fixedly connected to the bottom of the profile frame, a conveying assembly fixedly connected to the top front right end of the bottom welding frame, a tray lifting assembly fixedly connected to the inner wall of the conveying assembly, a detection mechanism located on the top left side of the bottom welding frame, a transfer gripping mechanism located on the top rear side of the bottom welding frame, a product gripping mechanism located on the inner wall of the transfer gripping mechanism, and a motor stator body located on the inner wall of the detection mechanism. In this invention, automated detection is achieved, reducing costs and increasing efficiency. The transfer gripping mechanism and product gripping mechanism enable automatic gripping, transfer, positioning, and rotation of the motor stator. Combined with the conveying assembly and tray lifting assembly, this completes automated product loading and unloading and transfer, completely replacing manual detection, significantly improving detection efficiency, and reducing labor production costs.

Description

Technical Field

[0001] This invention relates to the field of stator oil hole detection technology, and in particular to a device for detecting the stator oil circuit of a new energy vehicle drive motor. Background Technology

[0002] With the large-scale development of the new energy vehicle industry, the drive motor, as the core power component of the vehicle, needs to meet the operating requirements of high speed, high power, and high torque. The motor stator generally adopts an oil circuit cooling structure to ensure heat dissipation. The motor stator core is machined with cooling oil holes with a diameter of only 1.5mm. The inner ring oil holes, outer ring oil holes, and 36 sets of side oil grooves form a complex interconnected oil circuit. During the production and processing, the oil holes and flow channels are very prone to blockage.

[0003] The current method of detecting stator oil circuit blockages is a traditional one, which involves manual air gun blowing and visual inspection. This method is not only time-consuming and labor-intensive with low production efficiency, but also suffers from high rates of missed and false detections, making it impossible to accurately identify minute blockage defects. In addition, manual inspection has poor consistency and is difficult to match with the production rhythm of automated production lines, which seriously affects the product quality and mass production efficiency of motor stators.

[0004] To address the aforementioned issues, a testing device for the stator oil circuit of a new energy vehicle drive motor is proposed. Summary of the Invention

[0005] To overcome the above shortcomings, this invention provides a new energy vehicle drive motor stator oil circuit testing device, which aims to improve the existing method of manual air gun blowing and visual inspection for detecting blockages in motor stator oil circuits. This method is not only time-consuming, labor-intensive, and inefficient, but also prone to missed or false detections, unable to accurately determine minor blockages, and has poor detection consistency, making it difficult to adapt to the cycle time of automated production lines, which seriously affects product quality and mass production efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a new energy vehicle drive motor stator oil circuit testing device, comprising a profile frame, a bottom welding frame fixedly connected to the bottom of the profile frame, a conveying component fixedly connected to the top front right end of the bottom welding frame, a tray lifting component fixedly connected to the inner wall of the conveying component, a testing mechanism provided on the top left side of the bottom welding frame, a transfer gripping mechanism provided on the top rear side of the bottom welding frame, a product gripping mechanism provided on the inner wall of the transfer gripping mechanism, a motor stator body provided on the inner wall of the testing mechanism, a plurality of oil holes provided on the inner wall of the motor stator body, and a display fixedly connected to the top right rear end of the profile frame; The testing mechanism includes a changing base plate, which is fixedly connected to the top left side of the bottom welding frame. A support member is fixedly connected to the top of the changing base plate, and a testing component is fixedly connected to the inner wall of the support member. A testing head is provided on the top of the testing component. A solenoid valve one is fixedly installed on the top of the inner wall of the testing component. A solenoid valve two is fixedly installed on the inner side of the top of the inner wall of the testing component. A solenoid valve five is fixedly installed in the middle of the top of the inner wall of the testing component. A solenoid valve four is fixedly installed on the bottom of the inner wall of the testing component. A solenoid valve three is fixedly installed on the inner side of the bottom of the inner wall of the testing component. A central positioning cavity is provided in the middle of the testing component.

[0007] As a further description of the above technical solution: The transfer and gripping mechanism includes a bracket, which is fixedly connected to the top rear side of the bottom welding frame. Two slide rails are fixedly connected to the front side of the bracket. A push rod is fixedly connected to the middle of the front side of the bracket. An X-axis drive component is fixedly connected to the top of the bracket. A connecting plate is slidably connected to the front outer wall of the two slide rails. A Y-axis drive component is fixedly connected to the left side of the connecting plate. A drive cylinder is fixedly connected to the top of the connecting plate. Slide rails are fixedly connected to both the left and right ends of the front side of the connecting plate. Multiple sliders are slidably connected to the outer wall of the slide rails.

[0008] As a further description of the above technical solution: The product gripping mechanism includes a mounting plate, which is fixedly connected to the output end of a drive cylinder. A rotary motor is fixedly connected to the inner wall of the mounting plate, and a clamping cylinder is fixedly connected to the output end of the rotary motor.

[0009] As a further description of the above technical solution: Solenoid valve one and solenoid valve four are symmetrically distributed on both sides of solenoid valve five, and solenoid valve two and solenoid valve three are symmetrically distributed on both sides of solenoid valve five. The central positioning cavity is coaxially arranged with the motor stator body.

[0010] As a further description of the above technical solution: The two slide rails are arranged in parallel, the push rod is located in the middle of the two slide rails, the connecting plate moves linearly in the X direction along the slide rail, and the slider moves linearly in the Y direction along the slide rail.

[0011] As a further description of the above technical solution: The clamping cylinder rotates circumferentially with the rotary motor, and the clamping end of the clamping cylinder is adapted to the outer wall of the motor stator body.

[0012] As a further description of the above technical solution: The lifting direction of the pallet lifting assembly is perpendicular to the conveying plane of the conveying assembly, and the display is electrically connected to the detection mechanism.

[0013] As a further description of the above technical solution: The number of detection heads is the same as or a multiple of the number of oil holes. The number of detection heads is set to eighteen groups. The end face of the detection head is sealed and fitted with the port of the oil hole of the motor stator body. The support members are symmetrically distributed on both sides of the top of the forming base plate.

[0014] As a further description of the above technical solution: The procedure for the testing organization to perform oil circuit patency / blockage testing on the motor stator body is as follows: S1: The motor stator body is placed in the central positioning cavity. The side sealing cylinder of the detection component extends to seal the side of the motor stator body, and the upper and lower end face sealing cylinders extend to seal the upper and lower end faces of the motor stator body. The end face of the detection head is sealed and fitted with the oil hole port of the motor stator body. S2: Open solenoid valve five, and control the opening and closing of solenoid valve one, solenoid valve two, solenoid valve three and solenoid valve four in a time-sharing manner according to the oil circuit type of the motor stator body, forming an independent detection path for the corresponding oil circuit. S3: The flow sensor in the detection path collects ventilation flow data. When the flow value is lower than the set threshold, the corresponding oil hole is determined to be blocked. S4: After completing the inspection of 18 sets of oil holes, the rotary motor of the product gripping mechanism drives the clamping cylinder to rotate the motor stator body, aligning the remaining 18 sets of oil holes with the inspection head. Repeat steps 2 to 3 to complete the full coverage inspection of 36 sets of oil holes.

[0015] The present invention has the following beneficial effects: 1. In this invention, automated inspection reduces costs and increases efficiency. The automatic gripping, transfer, positioning and rotation of the motor stator are achieved through the transfer gripping mechanism and the product gripping mechanism. Together with the conveying component and the pallet lifting component, the automated loading and unloading and circulation of products are completed, completely replacing manual inspection, greatly improving inspection efficiency and reducing manual production costs.

[0016] 2. In this invention, the detection is accurate and there are no missed or false detections. The detection head is sealed and fitted with the stator oil hole, and the central positioning cavity is coaxially positioned with the stator to ensure the accuracy of detection alignment. Five sets of solenoid valves independently control the opening and closing of the detection path, and combined with flow detection, accurately determine the oil circuit blockage. It can identify minor blockage defects and eliminate the problems of missed and false detections in manual detection.

[0017] 3. In this invention, full coverage detection is achieved. The detection head is set to eighteen groups to adapt to multiple oil circuit types. With the help of a rotary motor to drive the stator to rotate, 36 groups of oil holes can be fully detected in two tests, covering all oil circuit types of the inner ring, outer ring, and side oil grooves, with no blind spots in the detection.

[0018] 3. In this invention, the visual control and production convenience display is electrically connected to the testing mechanism to display testing data, path status and testing results in real time, which makes it easy for production personnel to monitor the testing process in real time and improve the efficiency of production control; the overall layout of the integrated profile frame and bottom welding frame of the production line is compact and reasonable, and the conveying, transfer and testing modules work together. It can be directly integrated into the automated production line to meet the testing needs of the large-scale production of new energy vehicle motor stators. Attached Figure Description

[0019] Figure 1 This is a perspective view of the profile frame of a new energy vehicle drive motor stator oil circuit testing device proposed in this invention; Figure 2 This is a schematic diagram of the conveying component structure of a new energy vehicle drive motor stator oil circuit testing device proposed in this invention; Figure 3 This is a schematic diagram of the support structure of a new energy vehicle drive motor stator oil circuit testing device proposed in this invention; Figure 4 This is a schematic diagram of the base plate structure for a new energy vehicle drive motor stator oil circuit testing device proposed in this invention. Figure 5 This is a schematic diagram of the clamping cylinder structure of a new energy vehicle drive motor stator oil circuit detection device proposed in this invention. Figure 6 This is a schematic diagram of the cross-sectional structure of the clamping cylinder of a new energy vehicle drive motor stator oil circuit testing device proposed in this invention. Figure 7 This is a schematic diagram of the central positioning cavity structure of a new energy vehicle drive motor stator oil circuit testing device proposed in this invention; Figure 8 This is a schematic cross-sectional view of the detection component of a new energy vehicle drive motor stator oil circuit detection device proposed in this invention. Figure 9 This is a schematic cross-sectional view of the testing mechanism of a new energy vehicle drive motor stator oil circuit testing device proposed in this invention. Figure 10 This is a schematic diagram of the mounting plate structure of a new energy vehicle drive motor stator oil circuit detection device proposed in this invention; Figure 11 This is a schematic diagram of the rotating motor structure of a new energy vehicle drive motor stator oil circuit detection device proposed in this invention; Figure 12 This is a schematic diagram of the detection head structure of a new energy vehicle drive motor stator oil circuit detection device proposed in this invention; Figure 13 This is a schematic diagram of the five-section structure of the solenoid valve in the stator oil circuit detection device for a new energy vehicle drive motor proposed in this invention. Figure 14 This is a top view of the testing head of a new energy vehicle drive motor stator oil circuit testing device proposed in this invention; Figure 15 This is a flowchart of a method for detecting the stator oil circuit of a new energy vehicle drive motor proposed in this invention.

[0020] Legend: 1. Profile frame; 2. Product gripping mechanism; 201. Mounting plate; 202. Rotary motor; 203. Clamping cylinder; 3. Bottom welding frame; 4. Conveying assembly; 5. Testing mechanism; 501. Changing base plate; 502. Support component; 503. Testing assembly; 504. Testing head; 505. Solenoid valve one; 506. Solenoid valve two; 507. Solenoid valve three; 508. Solenoid valve four; 509. Solenoid valve five; 510. Central positioning cavity; 6. Display; 7. Tray lifting assembly; 8. Transfer and gripping mechanism; 801. Bracket; 802. Push rod; 803. X-axis drive component; 804. Slide rail one; 805. Connecting plate; 806. Y-axis drive component; 807. Drive cylinder; 808. Slide rail two; 809. Slider; 9. Oil hole; 10. Motor stator body. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Reference Figure 1-14An embodiment of the present invention provides a new energy vehicle drive motor stator oil circuit testing device, comprising a profile frame 1, a bottom welding frame 3 fixedly connected to the bottom of the profile frame 1, a conveying assembly 4 fixedly connected to the top front right end of the bottom welding frame 3, a tray lifting assembly 7 fixedly connected to the inner wall of the conveying assembly 4, a testing mechanism 5 arranged on the top left side of the bottom welding frame 3, a transfer gripping mechanism 8 arranged on the top rear side of the bottom welding frame 3, a product gripping mechanism 2 arranged on the inner wall of the transfer gripping mechanism 8, a motor stator body 10 arranged on the inner wall of the testing mechanism 5, and a motor stator body 10 arranged on the inner wall of the motor stator body 10. The wall is provided with multiple oil holes 9, and a display 6 is fixedly connected to the rear end of the top right side of the profile frame 1; the detection mechanism 5 includes a changing base plate 501, which is fixedly connected to the top left side of the bottom welding frame 3. A support member 502 is fixedly connected to the top of the changing base plate 501, and a detection component 503 is fixedly connected to the inner wall of the support member 502. A detection head 504 is provided on the top of the detection component 503, a solenoid valve 1 505 is fixedly installed on the top of the inner wall of the detection component 503, and a solenoid valve 2 506 is fixedly installed on the inner side of the top of the inner wall of the detection component 503. A solenoid valve 509 is fixedly installed in the middle of the top of the wall. A solenoid valve 508 is fixedly installed in the bottom of the inner wall of the detection component 503. A solenoid valve 507 is fixedly installed in the inner side of the bottom of the inner wall of the detection component 503. A central positioning cavity 510 is set in the middle of the detection component 503. This design is for the profile frame 1 to serve as the overall support for the detection equipment. The bottom of the profile frame 1 is fixedly connected to the bottom welding frame 3 to improve the stability of the entire motor stator oil circuit detection equipment and avoid the impact of detection vibration on accuracy. A conveying component 4 is installed on the right side of the top front of the bottom welding frame 3 to realize the connection between the motor stator body 1 and the bottom welding frame 3. The automated flow system features a conveyor assembly 4 with a fixed pallet lifting assembly 7 on the inner wall to vertically lift and feed products. This, combined with a transfer and gripping mechanism 8 and a product gripping mechanism 2, enables automatic loading and unloading, replacing manual inspection to reduce costs and increase efficiency. A detection mechanism 5 is installed on the top left side of the bottom welding frame 3 to check the oil holes 9 inside the motor stator body 10 for blockage. A transfer and gripping mechanism 8 is installed on the top rear side of the bottom welding frame 3 to facilitate cross-station product handling. A display 6 is fixed to the top of the profile frame 1 and electrically connected to the detection mechanism 5 to display real-time inspection data, enabling visualized management and improving the standardization of the inspection process.

[0023] The transfer gripping mechanism 8 includes a bracket 801, which is fixedly connected to the top rear side of the bottom welding frame 3. Two slide rails 804 are fixedly connected to the front side of the bracket 801. A push rod 802 is fixedly connected to the middle of the front side of the bracket 801. An X-axis drive component 803 is fixedly connected to the top of the bracket 801. A connecting plate 805 is slidably connected to the front outer wall of the two slide rails 804. A Y-axis drive component 806 is fixedly connected to the left side of the connecting plate 805. A drive cylinder 807 is fixedly connected to the top of the connecting plate 805. Slide rails 808 are fixedly connected to both the left and right ends of the front side of the connecting plate 805. Multiple sliders 809 are slidably connected to the outer wall of the slide rails 808. This design is intended to enable the transfer gripping mechanism 8 to perform precise product transfer. 01 is fixedly connected to the top rear side of the bottom welding frame 3, providing rigid support for the oil circuit testing equipment. Two slide rails 804 are set on the front side of the bracket 801. A push rod 802 is installed in the middle of the bracket 801. An X-axis drive component 803 is fixed on the top of the bracket 801. The drive connecting plate 805 moves linearly in the X direction along the slide rail 804 to improve the transfer positioning accuracy. A Y-axis drive component 806 is installed on the left side of the connecting plate 805 to realize the Y-direction displacement adjustment. A drive cylinder 807 is set on the top to provide Z-direction lifting power for the product gripping mechanism 2. Slide rails 808 are installed at both ends of the front side of the connecting plate 805. The slider 809 slides in the Y direction along the slide rail 808. Multi-axis collaboration completes the precise transfer of the motor stator body 10, adapts to the cycle time of automated production line, and improves the operating efficiency of the equipment.

[0024] The product gripping mechanism 2 includes a mounting plate 201, which is fixedly connected to the output end of the drive cylinder 807. A rotary motor 202 is fixedly connected to the inner wall of the mounting plate 201, and a clamping cylinder 203 is fixedly connected to the output end of the rotary motor 202. This design is for the product gripping mechanism 2 to be responsible for product clamping and rotation detection. The mounting plate 201 is fixedly connected to the output end of the drive cylinder 807 and completes the Z-axis lifting and lowering action with the cylinder. The rotary motor 202 is fixed to the inner wall of the mounting plate 201, and the output end is connected to the clamping cylinder 203. The rotary motor 202 drives the clamping cylinder 203 to perform circumferential rotation, which drives the motor stator body 10 to rotate and change position, realizing full coverage detection of the oil hole 9. The clamping end of the clamping cylinder 203 is precisely matched with the outer wall of the motor stator body 10, with no slippage or deformation, ensuring stable detection positioning. It works with the detection mechanism 5 to complete multi-directional detection, eliminate detection blind spots, solve the problem of missed detection by manual detection, and improve the completeness of detection.

[0025] Solenoid valves 505 and 508 are symmetrically distributed on both sides of solenoid valve 509, and solenoid valves 506 and 507 are symmetrically distributed on both sides of solenoid valve 509. The central positioning cavity 510 is coaxially arranged with the motor stator body 10. This design allows for a symmetrical layout of the solenoid valves inside the detection mechanism 5. The five sets of solenoid valves independently control the on / off state of the detection path, forming multiple detection circuits that precisely match the three oil circuit types of the motor stator body 10, improving detection accuracy. The detection assembly 503 has a central positioning cavity 510 in the middle, coaxially arranged with the motor stator body 10, enabling rapid product centering and precise alignment of the oil hole 9 with the detection head 504. This avoids misjudgment due to alignment deviation and can identify minute blockage defects in the 1.5mm oil hole 9, ensuring detection accuracy.

[0026] Two slide rails 804 are arranged in parallel, with the push rod 802 positioned between them. The connecting plate 805 moves linearly in the X-axis along slide rail 804, and the slider 809 moves linearly in the Y-axis along slide rail 808. This design ensures that the connecting plate 805 is evenly stressed, running smoothly without jamming or deviation. Driven by the X-axis drive unit 803, the connecting plate 805 makes stable linear motion in the X-axis along slide rail 804, guaranteeing accurate transfer of the motor stator body 10. Driven by the Y-axis drive unit 806, the slider 809 makes smooth linear motion in the Y-axis along slide rail 808, coordinating with the X-axis motion to achieve multi-dimensional displacement adjustment. This improves the motion accuracy and stability of the transfer and gripping mechanism 8, enabling precise delivery of the product into the detection mechanism 5, meeting the requirements of automated detection and positioning, and further improving detection efficiency and accuracy.

[0027] The clamping cylinder 203 rotates circumferentially with the rotary motor 202. The clamping end of the clamping cylinder 203 is adapted to the outer wall of the motor stator body 10. This design is to fix the clamping cylinder 203 and the output end of the rotary motor 202 in the product gripping mechanism 2. The rotary motor 202 directly drives the clamping cylinder 203 to rotate circumferentially, which is efficient in transmission and precise in positioning. The clamping end of the clamping cylinder 203 is customized according to the contour of the outer wall of the motor stator body 10 and is perfectly adapted to the product. The clamping force is uniform, which ensures both firmness and does not damage the product surface. The rotation action drives the motor stator body 10 to switch the detection angle. With the help of 18 detection heads 504, 36 groups of oil holes 9 can be fully detected in two rotations, covering all oil circuit types of the inner ring, outer ring and side oil groove, realizing detection without dead angles and achieving the beneficial effect of full coverage detection.

[0028] The pallet lifting assembly 7 is perpendicular to the conveying plane of the conveying assembly 4. The display 6 is electrically connected to the detection mechanism 5. This design ensures that the lifting direction of the pallet lifting assembly 7 is perpendicular to the conveying plane of the conveying assembly 4, resulting in smooth and tilt-free lifting. This accurately lifts the motor stator body 10 to the gripping station, preventing product offset from affecting the gripping operation. The conveying assembly 4 adopts a continuous conveying structure with stable speed, adapting to the production cycle of large-scale production. The display 6 is electrically connected to the detection mechanism 5 to receive real-time information such as flow data, path status, and blockage results, intuitively displaying the detection status and facilitating quick identification of defective products by operators. This structure combines automated loading and unloading with visual control, improving production management efficiency and meeting the mass production needs of new energy motor stators.

[0029] The number of detection heads 504 is related to the number or a multiple of the number of oil holes 9. Eighteen groups of detection heads 504 are set up. The end face of each detection head 504 is sealed to the port of the oil hole 9 on the motor stator body 10. Support members 502 are symmetrically distributed on both sides of the top of the form-changing base plate 501. This design is to match the number of detection heads 504 and oil holes 9 in the detection mechanism 5, setting them to eighteen groups, so that a group of oil holes 9 can be detected synchronously in a single operation. The end face is equipped with a sealing structure that fits tightly with the oil hole 9 port of the motor stator body 10, ensuring reliable sealing and preventing air leakage that could lead to flow detection errors. This allows for accurate determination of the oil circuit's open or closed state. The support components 502 are symmetrically distributed on both sides of the top of the changeover base plate 501, providing balanced support for the detection component 503. The quick-release design of the changeover base plate 501 facilitates the replacement of the detection mechanism 5 as a whole when changing to different models of motor stator bodies 10, without the need to adjust the main equipment. The symmetrical layout and sealing design ensure detection accuracy, and the quick changeover meets the testing needs of multiple product specifications.

[0030] The process by which the testing mechanism 5 performs oil circuit patency / blockage testing on the motor stator body 10 is as follows: S1: The motor stator body 10 is placed in the central positioning cavity 510. The side sealing cylinder of the detection component 503 extends to seal the side of the motor stator body 10, and the upper and lower end face sealing cylinder extends to seal the upper and lower end faces of the motor stator body 10. The end face of the detection head 504 is sealed and fitted with the oil hole 9 port of the motor stator body 10. S2: Open solenoid valve 509, and control the opening and closing of solenoid valve 1 505, solenoid valve 2 506, solenoid valve 3 507, and solenoid valve 4 508 in a time-sharing manner according to the oil circuit type of the motor stator body 10, forming an independent detection path for the corresponding oil circuit. S3: The flow sensor in the detection path collects ventilation flow data. When the flow value is lower than the set threshold, the corresponding oil hole 9 is determined to be blocked. S4: After completing the inspection of 18 sets of oil holes 9, the rotary motor 202 of the product gripping mechanism 2 drives the clamping cylinder 203 to rotate the motor stator body 10, aligning the remaining 18 sets of oil holes 9 with the inspection head 504, and repeating steps 2 to 3 to complete the full coverage inspection of 36 sets of oil holes 9.

[0031] Working principle: After the testing equipment is powered on, the electrical control system completes a self-test, the display 6 lights up and displays information such as equipment status, detection flow threshold, and oil circuit type parameters. All solenoid valves 505, 506, 507, 508, and 509 in the testing mechanism 5 are closed, and the testing head 504 retracts to its initial position. The connecting plate 805 and slider 809 of the transfer gripping mechanism 8 return to their mechanical origin. The clamping cylinder 203 of the product gripping mechanism 2 remains open. The pallet lifting assembly 7 descends below the conveying surface of the conveying assembly 4, and the entire machine enters the waiting state.

[0032] The operator places the motor stator body 10 on the special tray of the conveying component 4 with the crown end facing upward and the positioning groove as the origin. The inner wall of the product is machined with oil holes 9, which are divided into inner ring oil holes 9, outer ring oil holes 9 and side oil grooves, forming three types of connected oil circuits. The conveying component 4 starts the chain conveyor and conveys the tray at a uniform speed to the position directly above the tray lifting component 7. After the tray is in place, the conveying component 4 stops operating, completing the loading preparation and laying the foundation for subsequent automated testing.

[0033] The pallet lifting and product gripping positioning process involves the pallet lifting component 7 receiving a positioning signal and then lifting upwards along a direction perpendicular to the conveying plane of the conveying component 4. This lifts the pallet carrying the motor stator body 10 to a preset gripping height. The lifting process is smooth and without tilting, ensuring the motor stator body 10 remains centered without deviation. After the pallet is lifted into position, the transfer gripping mechanism 8 starts operating: the X-axis drive component 803 outputs power, driving the connecting plate 805 to move along two parallel slide rails 1 804 towards the conveying component 4. The push rod 802 provides auxiliary guidance, ensuring accurate movement trajectory. The Y-axis drive component 806 synchronously adjusts the slider 809 along the Y-axis position of slide rail 2 808, ensuring the product gripping mechanism 2 is precisely aligned with the center of the motor stator body 10. The drive cylinder 807 extends downwards, lowering the mounting plate 201 and the clamping cylinder 203 to the product clamping height, completing precise positioning before gripping. Multi-axis coordination avoids gripping deviation.

[0034] In the product clamping and automated transfer process, after receiving the clamping signal, the product gripping mechanism 2 retracts the clamping cylinder 203, and the clamping end fits tightly against the outer wall of the motor stator body 10, completing a secure clamping. After clamping, the drive cylinder 807 retracts upward, causing the product to detach from the tray. The tray lifting component 7 descends and resets, and the conveying component 4 can continue to convey the next set of products to be inspected, achieving continuous feeding. The X-axis drive component 803 starts again, driving the connecting plate 805 to move rapidly along the slide rail 1 804 towards the inspection mechanism 5, moving the product directly above the inspection position. During the transfer process, slide rail 1 804 and slide rail 2 808 provide stable guidance, preventing the product from shaking or shifting. This achieves automatic cross-station transfer from the conveying station to the inspection station without manual intervention, achieving automated inspection, cost reduction, and efficiency improvement.

[0035] The stator is positioned and the detection head 504 is sealed. The drive cylinder 807 extends downward, smoothly placing the motor stator body 10 into the central positioning cavity 510 of the detection mechanism 5. The central positioning cavity 510 is coaxially set with the product, quickly completing centering and ensuring precise alignment between the oil hole 9 and the detection head 504. Subsequently, the structure and detection process of the detection head 504 are executed. The side sealing cylinder extends, driving the side sealing block to seal the side of the product; the upper and lower end face sealing cylinders extend, driving the upper and lower end face sealing blocks to press against the upper and lower end faces of the product; all sealing parts are equipped with sealing rings to form a completely sealed detection cavity. The end face of the detection head 504 is sealed and fitted with the port of the oil hole 9, preventing air leakage during detection and providing a stable sealing environment for flow detection.

[0036] After sealing, the core principle of oil circuit closure detection and solenoid valve control is implemented: The motor stator body 10 has five detection holes on both ends. Five sets of solenoid valves control the opening and closing of these holes, creating different pathways. Each pathway is equipped with a high-precision flow sensor, and the flow rate determines whether the oil circuit is open or closed. Solenoid valve 509, as the main control valve, opens first. Solenoid valves 1 (505), 2 (506), 3 (507), and 4 (508) open and close according to the oil circuit type, adapting to three types of oil circuit detection. Oil circuit type 1: The inner ring oil hole 9 is fully connected to the upper and lower outer ring oil holes 9 and the side oil groove. The solenoid valve 509 + solenoid valve 1 505, solenoid valve 509 + solenoid valve 2 506, and solenoid valve 509 + solenoid valve 3 507 are opened in sequence to form three independent detection paths. Oil circuit type 2: The inner ring oil hole 9 is connected to the outer ring oil hole 9 on the same side and the side oil groove, while the opposite side is blocked, and the solenoid valve is controlled according to the corresponding passage. Oil circuit type 3: Inner ring oil hole 9 is only connected to the side oil groove, and the control path detection is independent.

[0037] After ventilation, the airflow enters the oil hole 9 through the detection head 504. The flow sensor collects data in real time. If the flow rate is less than the threshold, it is determined to be a blockage. It can accurately identify the tiny blockage defect of the 1.5mm oil hole 9, solving the problem that manual judgment of tiny defects is impossible, and achieving accurate detection with no missed or false detections.

[0038] The system features full-coverage testing and product rotation retesting. The testing head 504 comprises eighteen groups, completing simultaneous testing of group oil holes 9 in a single operation. After the first round of testing, the testing head 504 retracts, the sealing assembly releases its seal, the drive cylinder 807 descends, the clamping cylinder 203 clamps the product again, the rotary motor 202 starts, driving the product to rotate 10°, aligning the untested group oil holes 9 with the testing head 504. Once rotated into position, the product is reinserted into the central positioning cavity 510, the sealing assembly re-seales, and the solenoid valve initiates the second round of testing according to logic. Through the two rotations of the group testing head 504, full-coverage testing of group oil holes 9 is completed, covering all oil circuit types, achieving comprehensive testing without blind spots, and adapting to multiple oil circuit types.

[0039] After two rounds of testing, the testing agency's electronic control system integrates flow data and blockage results to generate a test report, which is then transmitted to display 6. Display 6 shows real-time information such as pass / fail status, blocked oil hole number 9, oil circuit type, and flow rate, enabling visualized management. Products that pass the test are marked as qualified, while blocked products are marked as unqualified, triggering audible and visual alerts for rapid sorting. Test data is synchronously stored in the electronic control system, supporting traceability and improving the standardization of production management to meet the quality control needs of automated production lines.

[0040] After the product unloading and production line cycle, and the output of the test results, the test head 504 and the sealing components are all reset. The clamping cylinder 203 clamps the product, the drive cylinder 807 rises, the X-axis drive component 803 drives the connecting plate 805 back to the conveying position, the drive cylinder 807 descends to place the product back on the pallet, the clamping cylinder 203 opens and resets, the transfer gripping mechanism 8 returns to its origin, the conveying component 4 starts, and the product is sent to the unloading station. Qualified products flow into the next process, and unqualified products flow into the rework station. The pallet lifting component 7, the testing mechanism 5, and the product gripping mechanism 2 reset, awaiting the next batch of products, and then enter the cycle of testing. The equipment cycle time matches the needs of large-scale production of motor stators.

[0041] With rapid model changeover and compatibility with multiple product specifications, when testing different models of motor stator bodies 10, the testing mechanism 5 can be replaced as a whole thanks to the quick-release mechanism of the model changeover base plate 501. There is no need to adjust the profile frame 1, bottom welding frame 3, or transfer gripping mechanism 8. After model changeover, the electronic control system loads new parameters and solenoid valve logic, and the testing of new product specifications can be started. Rapid model changeover improves the versatility of the testing equipment, meets the testing needs of multiple models of motor stators in new energy vehicles, and expands the application scenarios of the equipment.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A testing device for the stator oil circuit of a new energy vehicle drive motor, comprising a profile frame (1), characterized in that: The bottom of the profile frame (1) is fixedly connected to a bottom welding frame (3), the top front right end of the bottom welding frame (3) is fixedly connected to a conveying assembly (4), the inner wall of the conveying assembly (4) is fixedly connected to a pallet lifting assembly (7), the top left side of the bottom welding frame (3) is provided with a detection mechanism (5), the top rear side of the bottom welding frame (3) is provided with a transfer gripping mechanism (8), the inner wall of the transfer gripping mechanism (8) is provided with a product gripping mechanism (2), the inner wall of the detection mechanism (5) is provided with a motor stator body (10), the inner wall of the motor stator body (10) is provided with multiple oil holes (9), and the top right rear end of the profile frame (1) is fixedly connected to a display (6). The testing mechanism (5) includes a changeover base plate (501), which is fixedly connected to the top left side of the bottom welding frame (3). A support member (502) is fixedly connected to the top of the changeover base plate (501). A testing component (503) is fixedly connected to the inner wall of the support member (502). A testing head (504) is provided on the top of the testing component (503). A solenoid valve one (505) is fixedly installed on the top of the inner wall of the testing component (503). A solenoid valve two (506) is fixedly installed on the inner side of the top of the inner wall of the testing component (503). A solenoid valve five (509) is fixedly installed in the middle of the top of the inner wall of the testing component (503). A solenoid valve four (508) is fixedly installed on the bottom of the inner wall of the testing component (503). A solenoid valve three (507) is fixedly installed on the inner side of the bottom of the inner wall of the testing component (503). A central positioning cavity (510) is provided in the middle of the testing component (503).

2. The new energy vehicle drive motor stator oil circuit testing equipment according to claim 1, characterized in that: The transfer gripping mechanism (8) includes a bracket (801), which is fixedly connected to the top rear side of the bottom welding frame (3). Two slide rails (804) are fixedly connected to the front side of the bracket (801). A push rod (802) is fixedly connected to the middle of the front side of the bracket (801). An X-axis drive (803) is fixedly connected to the top of the bracket (801). A connecting plate (805) is slidably connected to the front side of the outer wall of the two slide rails (804). A Y-axis drive (806) is fixedly connected to the left side of the connecting plate (805). A drive cylinder (807) is fixedly connected to the top of the connecting plate (805). Slide rails (808) are fixedly connected to both the left and right ends of the front side of the connecting plate (805). Multiple sliders (809) are slidably connected to the outer wall of the slide rails (808).

3. The new energy vehicle drive motor stator oil circuit detection device according to claim 2, characterized in that: The product gripping mechanism (2) includes a mounting plate (201), which is fixedly connected to the output end of the drive cylinder (807). A rotary motor (202) is fixedly connected to the inner wall of the mounting plate (201), and a clamping cylinder (203) is fixedly connected to the output end of the rotary motor (202).

4. The stator oil circuit testing equipment for a new energy vehicle drive motor according to claim 1, characterized in that: The first solenoid valve (505) and the fourth solenoid valve (508) are symmetrically distributed on both sides of the fifth solenoid valve (509), and the second solenoid valve (506) and the third solenoid valve (507) are symmetrically distributed on both sides of the fifth solenoid valve (509). The central positioning cavity (510) is coaxially arranged with the motor stator body (10).

5. The stator oil circuit testing equipment for a new energy vehicle drive motor according to claim 2, characterized in that: The two slide rails (804) are arranged in parallel, the push rod (802) is located in the middle of the two slide rails (804), the connecting plate (805) moves in a straight line in the X direction along the slide rail (804), and the slider (809) moves in a straight line in the Y direction along the slide rail (808).

6. The new energy vehicle drive motor stator oil circuit detection device according to claim 3, characterized in that: The clamping cylinder (203) rotates circumferentially with the rotary motor (202), and the clamping end of the clamping cylinder (203) is adapted to the outer wall of the motor stator body (10).

7. The new energy vehicle drive motor stator oil circuit detection device according to claim 1, characterized in that: The lifting direction of the pallet lifting assembly (7) is perpendicular to the conveying plane of the conveying assembly (4), and the display (6) is electrically connected to the detection mechanism (5).

8. The stator oil circuit testing equipment for a new energy vehicle drive motor according to claim 1, characterized in that: The number of the detection heads (504) is the same as or a multiple of the number of oil holes (9). The detection heads (504) are set to eighteen groups. The end face of the detection head (504) is sealed and fitted with the port of the oil hole (9) of the motor stator body (10). The end face of the detection head (504) is sealed and fitted with the port of the oil hole (9) of the motor stator body (10). The support members (502) are symmetrically distributed on both sides of the top of the changing base plate (501).

9. A method for testing the stator oil circuit of a new energy vehicle drive motor, applied to the new energy vehicle drive motor stator oil circuit testing equipment described in any one of claims 1-8, characterized in that: The process by which the testing mechanism (5) performs oil circuit blockage testing on the motor stator body (10) is as follows: S1: The motor stator body (10) is placed in the central positioning cavity (510). The side sealing cylinder of the detection component (503) extends out to seal the side of the motor stator body (10), and the upper and lower end sealing cylinder extends out to seal the upper and lower end faces of the motor stator body (10). The end face of the detection head (504) is sealed and fitted with the oil hole (9) port of the motor stator body (10). S2: Open solenoid valve five (509), and control the opening and closing of solenoid valve one (505), solenoid valve two (506), solenoid valve three (507), and solenoid valve four (508) according to the oil circuit type of the motor stator body (10) in time, so as to form an independent detection path for the corresponding oil circuit. S3: The flow sensor in the detection path collects the ventilation flow data. When the flow value is lower than the set threshold, the corresponding oil hole (9) is determined to be blocked. S4: After completing the inspection of 18 sets of oil holes (9), the rotary motor (202) of the product gripping mechanism (2) drives the clamping cylinder (203) to rotate the motor stator body (10), aligning the remaining 18 sets of oil holes (9) with the inspection head (504), and repeating steps 2 to 3 to complete the full coverage inspection of 36 sets of oil holes (9).

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