A rotor core product key dimension detection device

Abstract

The application discloses a kind of rotor core product key dimension detection devices, including C-shaped frame body, the bottom end surface of the bottom of C-shaped frame body is provided with base mechanism, the top end surface of C-shaped frame body is provided with servo electric jar, the vertical portion inboard of C-shaped frame body is provided with slide rail mechanism;The bottom end of servo electric jar is connected with flatness detection mechanism by pressure bar and pressure sensor mechanism;The side surface of flatness detection mechanism is slidably equipped with slide rail mechanism, and bottom flatness is connected with the bottom end of plunger, and the probe that protrudes is contacted with the top end surface of rotor core product in plunger bottom;The rear of base mechanism is provided with height detection mechanism for measuring pressurization height;The application can accurately measure the pressurization height, flatness and parallelism of rotor core product in the same station, reduce the possibility of large error in measurement process, improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of core component manufacturing and testing technology for drive motors of new energy electric vehicles, specifically to an intelligent testing mechanism for detecting the product pressure height, flatness, and parallelism of the rotor core of a permanent magnet synchronous motor in new energy vehicle motors. Background Technology

[0002] PM (Permanent Magnet) type rotors are internal rotor type (motors with an external stator and an air gap in the middle). The rotor of a permanent magnet synchronous motor includes permanent magnets, rotor core, shaft, bearings, etc. The rotor core is an important part of the motor's magnetic circuit. The rotor windings are placed in the slots of the core. The rotor windings cut the rotating magnetic field of the stator to generate induced electromotive force and current, which in turn forms electromagnetic torque, thus causing the motor to rotate.

[0003] The height, flatness, and parallelism of the rotor core are critical dimensions that affect the rear assembly process and rotor performance. Therefore, these dimensions need to be inspected during production. The original inspection method mainly involved sampling after the products came off the production line and measuring them using a coordinate measuring machine. This method is time-consuming and labor-intensive, and can only achieve partial inspection results.

[0004] In typical testing methods, the measurement of the pressurization height of the rotor core is usually ensured by the displacement performance of the press. If the press's displacement accuracy is insufficient, or if the mechanism experiences cumulative deformation after multiple pressurizations, the measured height data will be distorted. Furthermore, the measurement of rotor flatness and parallelism is usually performed at a separate workstation, increasing the production cycle time and significantly impacting production efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a key dimension detection device for rotor core products, which can accurately measure the pressurization height, flatness and parallelism of rotor core products and avoid large errors in the measurement process.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows.

[0007] A key dimension detection device for rotor core products includes a C-shaped frame. A base mechanism is provided on the upper bottom surface of the C-shaped frame to place the rotor core product and center its position. A servo cylinder is provided on the top surface of the C-shaped frame to apply downward pressure. A slide rail mechanism is provided on the inner side of the vertical part of the C-shaped frame. The bottom end of the servo cylinder is connected to a flatness detection mechanism via a pressure rod and a pressure sensor mechanism. The side of the flatness detection mechanism is slidably fitted with the slide rail mechanism and can move up and down along the slide rail mechanism. A bottom flat pressure head is connected to the bottom of the flatness detection mechanism, which follows the downward pressure of the servo cylinder. A probe protrudes from the bottom of the pressure head to contact the top surface of the rotor core product. A height detection mechanism for measuring the pressure application height is provided behind the base mechanism and at a position corresponding to the top and bottom of the flatness detection mechanism.

[0008] The aforementioned key dimension detection device for rotor core products includes a base mechanism that is fixed to the upper surface of the lower part of a C-shaped frame. The upper surface of the base is provided with a product placement pad for placing the rotor core through a position adjustment component.

[0009] The aforementioned key dimension detection device for rotor core products includes a position adjustment assembly comprising a base left-right adjustment plate slidably disposed on the top surface of the base and a base front-back adjustment plate slidably disposed on the top surface of the base left-right adjustment plate. A product placement pad is installed at the center of the base front-back adjustment plate. A U-shaped limiting groove is fixedly disposed on the top edge of the front end face and the top of the right end face of the base. A base left-right adjustment rod passing through the right U-shaped limiting groove is horizontally fixedly disposed on the right end face of the base left-right adjustment plate. A base front-back adjustment rod passing through the front U-shaped limiting groove is horizontally fixedly disposed on the front end face of the base front-back adjustment plate. The threaded ends of the base left-right adjustment rod and the base front-back adjustment rod passing through the U-shaped limiting groove are positioned by a locking nut.

[0010] The aforementioned key dimension detection device for rotor core products includes a flatness detection mechanism comprising a sensor assembly mounting frame for mounting sensor components. The sensor assembly mounting frame is a square frame structure, and its sides are slidably assembled with a slide rail mechanism provided on the inner side of the vertical part of the C-shaped frame. A sensor assembly mounting frame connecting plate connected to a pressure sensor mechanism is provided on the top surface of the sensor assembly mounting frame, and a contact sensor mounting plate is provided on the bottom surface of the sensor assembly mounting frame. The pressure head is fixedly positioned below the contact sensor mounting plate.

[0011] The aforementioned key dimension detection device for rotor core products includes a sensor assembly comprising 12 signal amplifiers and contact sensors. The 12 signal amplifiers are arranged vertically and parallel on the front side of the sensor assembly mounting bracket. The 12 contact sensors are arranged in pairs of two, forming six pairs that are evenly distributed in a circular pattern on the contact sensor mounting plate. The lower part of each contact sensor passes through the contact sensor mounting plate and the lower end face of the pressure head, revealing its end probe.

[0012] The aforementioned key dimension detection device for rotor core products includes a pressure sensor mechanism comprising a pressure rod connecting plate, a pressure sensor, and a pressure sensor mounting plate. The upper part of the pressure sensor, used to detect downward pressure applied by the servo cylinder, is connected to the end of the pressure rod via the pressure rod connecting plate. The bottom of the pressure sensor is mounted on the pressure sensor mounting plate, which is mounted on a sensor assembly mounting bracket connecting plate. The pressure rod connecting plate and the pressure sensor mounting plate are arranged parallel to each other and connected by a fixing column.

[0013] The aforementioned key dimension detection device for rotor core products includes a height detection mechanism comprising an upper mold detection block and a lower mold displacement sensor corresponding to the position of the upper mold detection block. The upper mold detection block is fixed to the rear end face of a contact sensor mounting plate, and the lower mold displacement sensor is mounted directly below the upper mold detection block via a displacement sensor bracket vertically set on the rear end face of the base.

[0014] The aforementioned key dimension detection device for rotor core products has two limit screws on the top surface of the displacement sensor brackets located on both sides of the lower mold displacement sensor to prevent damage to the lower mold displacement sensor during the downward pressing of the upper mold detection block.

[0015] Due to the adoption of the above technical solutions, the technical progress achieved by this invention is as follows.

[0016] This invention provides a key dimension detection device for rotor core products, which can accurately measure the pressurization height, flatness, and parallelism of rotor core products, reducing the possibility of large errors during the measurement process. At the same time, this invention reduces the production cycle through the cooperation of multiple mechanisms, enabling the pressurization height, flatness, and parallelism of rotor core products to be measured in the same workstation, thereby improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the specific structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the base mechanism described in this invention;

[0019] Figure 3 This is a schematic diagram of the flatness detection mechanism described in this invention;

[0020] Figure 4 This is a schematic diagram of the distribution of the contact sensor described in this invention;

[0021] Figure 5 This is a schematic diagram of the height detection mechanism described in this invention;

[0022] Figure 6 This is a schematic diagram of the pressure sensor mechanism described in this invention.

[0023] The components include: 1. C-shaped frame, 2. base, 3. servo electric cylinder, 4. slide rail mechanism, 5. flatness detection mechanism, 6. height detection mechanism, 7. base front and rear adjustment rod, 8. base left and right adjustment rod, 9. base front and rear adjustment plate, 10. base left and right adjustment plate, 11. product placement pad, 12. pressure rod, 13. pressure rod connecting plate, 14. pressure sensor, 15. pressure sensor pad, 16. sensor assembly mounting bracket connecting plate, 17. signal amplifier, 18. contact sensor, 19. contact sensor mounting plate, 20. sensor assembly mounting bracket, 21. pressure head, 22. upper mold detection block, 23. lower mold displacement sensor, 24. limit screw, 25. displacement sensor bracket, 26. U-shaped limit groove, and 27. locking nut. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] A device for detecting key dimensions of rotor core products, such as Figures 1 to 6 As shown, it includes a C-shaped frame 1, a base mechanism is provided on the upper bottom surface of the C-shaped frame 1, a servo electric cylinder 3 is provided on the top surface of the upper part of the C-shaped frame 1, and a sliding mechanism 4 is provided on the inner side of the vertical part of the C-shaped frame 1; the bottom of the servo electric cylinder 3 is connected to the flatness detection mechanism 5 through a pressure rod 12 and a pressure sensor mechanism, the side of the flatness detection mechanism 5 is slidably fitted with the vertical sliding mechanism 4, and a pressure head 21 is installed on the bottom surface of the flatness detection mechanism 5; a height detection mechanism for detecting the pressure height of the rotor core product is provided at corresponding positions on the outer sides of the base mechanism and the flatness detection mechanism 5.

[0026] The base mechanism includes a base 2, such as Figure 2 As shown, a product placement pad 11 is provided above the base 2 via a position adjustment assembly for fixing the rotor core product; the position adjustment assembly includes a base left and right adjustment plate 10 that is slidably assembled with the top surface of the base 2 and a base front and rear adjustment plate 9 that is slidably assembled with the top surface of the base left and right adjustment plate 10, for centering the position of the product placement pad above; the product placement pad 11 is fixedly set at the center position of the base front and rear adjustment plate 9.

[0027] A U-shaped limiting groove 26 is provided on the top edge of the front end face of the base 2 and on the right end face of the base 2. The left and right adjustment rod 8 of the base passes through the U-shaped limiting groove provided on the right end face of the base and is fixed to the right end face of the left and right adjustment plate 10 of the base. The front and rear adjustment rod 7 of the base passes through the U-shaped limiting groove 26 provided on the edge of the top edge of the front end face of the base and is fixed to the front end of the front and rear adjustment plate 9 of the base. The threaded ends of the front and rear adjustment rod 7 and the left and right adjustment rod 8 after passing through the U-shaped limiting groove 26 are positioned by locking nuts 27. The front and rear adjustment plate 9 and the left and right adjustment plate 10 of the base are controlled by rotating the front and rear adjustment rod 7 and the left and right adjustment rod 8 to achieve the movement in the front and rear or left and right directions.

[0028] The flatness detection mechanism 5 includes a sensor assembly mounting bracket 20. The sensor assembly mounting bracket 20 has a cuboid frame structure. The side of the sensor assembly mounting bracket 20 is slidably assembled with a slide rail mechanism 4 provided on the inner side of the vertical part of the C-shaped frame 1, and can slide up and down along the slide rail mechanism 4 under the drive of the servo electric cylinder 3. Figure 1 As shown; the upper part of the sensor assembly mounting bracket 20 is connected to the pressure sensor mechanism via a sensor assembly mounting bracket connecting plate 16 provided on the top surface, as shown. Figure 3 As shown, a contact sensor mounting plate 19 is provided on the lower bottom surface of the sensor assembly mounting bracket 20, and a pressure head 21 is mounted on the bottom surface of the contact sensor mounting plate 19; the sensor assembly includes 12 sets of signal amplifiers 17 and contact sensors 18, wherein the 12 signal amplifiers are arranged in parallel on the front side of the sensor assembly mounting bracket 20, and the contact sensors 18 are arranged in pairs of six in a circular pattern and fixed on the contact sensor mounting plate 19, as shown. Figure 4 As shown, the bottom end of the contact sensor 18 passes through the contact sensor mounting plate 19 and the lower end face of the pressure head 21 below, revealing a protruding probe at the bottom. During detection, the bottom probe of the contact sensor 18 feeds back the detected data to the signal amplifier 17, thereby obtaining more accurate data and feeding it back to the detection program, ensuring the accuracy of the detection.

[0029] The height detection mechanism 6 for detecting the pressurized height of rotor core products includes an upper mold detection block 22 mounted on the rear side of a contact sensor mounting plate 19 and a lower mold displacement sensor 23 corresponding vertically to the position of the upper mold detection block 22. Figure 5 As shown, the lower mold displacement sensor 23 is fixed on the displacement sensor bracket 25 provided on the rear side of the base 2, and is fixed by two limiting screws 24 on both sides of the displacement sensor bracket 25 to prevent the lower mold displacement sensor 23 from being damaged.

[0030] The pressure sensor mechanism includes a pressure rod connecting plate 13, a pressure sensor 14, and a pressure sensor pad 15. The pressure sensor 14 passes through a through hole in the upper pressure rod connecting plate 13 and connects to the end of the pressure rod 12. The pressure sensor pad 15, which houses the pressure sensor 14, is connected to the lower sensor assembly mounting bracket connecting plate 16. The pressure rod connecting plate 13 and the pressure sensor pad are connected by a fixing post. When the downward pressure reaches 10000N, the pressure sensor 14 will send feedback to the servo electric cylinder 3 to stop applying pressure.

[0031] When using this invention, the operator must first adjust and center the position of the product placement pad by adjusting the front and rear adjustment rods and the left and right adjustment rods of the base. At the same time, the locking nut at the rear is used to fix the front and rear adjustment rods and the left and right adjustment rods of the base to prevent them from sliding and causing data deviation. Then, the rotor core product is placed on the product placement pad above the base and fixed.

[0032] Then the servo motor begins to apply downward pressure, which, under the action of the pressure rod, drives the sensor assembly mounting bracket below and the upper mold detection block behind it to move downward. The upper mold detection block contacts the detection head of the lower mold displacement sensor at the corresponding position below and compresses downward. At the same time, the pressure sensor detects the downward pressure applied by the servo cylinder. When the detected downward pressure reaches 10000N, the pressure sensor feeds back the signal to the servo cylinder, and the servo cylinder stops applying pressure and enters a pressure-holding state. At this time, the lower mold displacement sensor calculates the pressurization height of the rotor core product based on the data feedback of the downward displacement of the detection head.

[0033] After the pressurization height detection is completed, the servo electric cylinder controls the pressure head and flatness detection mechanism 5 to move upward to a position away from the product surface. The servo electric cylinder stops moving. At this time, the end probe of the contact sensor of the pressure head is still in contact with the product surface. The 12 contact sensors feed back the detected expansion and contraction to the 12 signal amplifiers for fitting calculation, complete the detection of the product's flatness and parallelism, and output the detection results. Then the servo electric cylinder returns to the original position. At this time, the key dimension detection of the rotor core product is completed.

[0034] This invention provides a key dimension detection device for rotor core products, capable of accurately measuring the pressurization height, flatness, and parallelism of rotor core products, reducing the possibility of large errors during measurement. In this invention, the pressurization height of the rotor core is mainly detected by an external displacement sensor, effectively improving detection accuracy and avoiding measurement errors caused by cumulative deformation of the mechanism. This invention also solves the problem of multi-station moving measurement; through the cooperation of multiple mechanisms, the pressurization height, flatness, and parallelism can be detected in one station, reducing production cycle time and improving work efficiency.

Claims

1. A rotor core product critical dimension detection apparatus, characterized by: The application relates to a C-shaped frame body (1) which is provided with a base mechanism for placing a rotor iron core product and capable of aligning the product position on the bottom upper end face of the C-shaped frame body (1), a servo electric cylinder (3) for applying pressure downward on the upper top end face of the C-shaped frame body (1), and a slide rail mechanism (4) arranged on the inner side of the vertical part of the C-shaped frame body (1); the bottom end of the servo electric cylinder (3) is connected with a pressure rod (12) and a flatness sensor detection mechanism (5) through a pressure sensor mechanism; the side surface of the flatness sensor detection mechanism (5) is slidably arranged with the slide rail mechanism (4) and can move up and down along the slide rail mechanism (4); the bottom end of the flatness sensor detection mechanism (5) is connected with a bottom flat pressing head (21) which is pressed downward along with the servo electric cylinder (3), and the bottom of the pressing head (21) is provided with a probe which is in contact with the top end surface of the rotor iron core product; a height measuring sensor detection mechanism for measuring the pressing height is arranged on the back of the base mechanism and the back of the flatness sensor detection mechanism (5) and the corresponding position of the base mechanism up and down; The flatness sensor detection mechanism (5) comprises a sensor assembly mounting frame (20) for mounting a sensor assembly, the sensor assembly mounting frame (20) is a square frame structure as a whole, the side surface of the sensor assembly mounting frame (20) is slidably arranged with the slide rail mechanism (4) arranged on the inner side of the vertical part of the C-shaped frame body (1); a sensor assembly mounting frame connecting plate (16) connected with the pressure sensor mechanism is arranged on the top end surface of the sensor assembly mounting frame (20), and a contact type sensor mounting plate (19) is arranged on the bottom end surface of the sensor assembly mounting frame (20); the pressing head (21) is fixedly arranged below the contact type sensor mounting plate (19); The sensor assembly comprises 12 signal amplifiers (17) and contact type sensors (18), the 12 signal amplifiers (17) are vertically and parallelly arranged on the front side surface of the sensor assembly mounting frame (20), 12 contact type sensors (18) are evenly distributed in a circumferential mode on the contact type sensor mounting plate (19) and are divided into six pairs, and the lower parts of the contact type sensors (18) sequentially pass through the lower end surface of the contact type sensor mounting plate (19) and the pressing head (21) and then expose the terminal probes; The pressure sensor mechanism comprises a pressure rod connecting plate (13), a pressure sensor (14) and a pressure sensor mounting plate (15); the pressure sensor (14) for detecting the pressure applied by the servo electric cylinder downward is connected with the terminal end of the pressure rod (12) through the pressure rod connecting plate (13) on the upper part, the bottom of the pressure sensor (14) is mounted on the pressure sensor mounting plate (15), and the pressure sensor mounting plate (15) is mounted on the sensor assembly mounting frame connecting plate (16); the pressure rod connecting plate (13) and the pressure sensor mounting plate (15) are arranged in parallel and are connected through fixing columns. The height measuring sensor detection mechanism comprises an upper die detection block (22) and a lower die displacement sensor (23) corresponding to the upper die detection block in position, the upper die detection block (22) is fixed on the rear end face of the contact sensor mounting plate (19), and the lower die displacement sensor (23) is installed right below the upper die detection block (22) through the displacement sensor support (25) vertically arranged on the rear end face of the base (2).

2. The rotor core product key dimension detection device according to claim 1, characterized by: The base mechanism comprises a base (2) fixed on the lower end face of the C-shaped frame body (1), and the upper end face of the base (2) is provided with a product placement pad plate (11) for placing the rotor core through a position adjusting assembly.

3. A rotor core product key dimension detection apparatus according to claim 2, characterized by: The position adjusting assembly comprises a base left-right adjusting plate (10) slidably arranged on the top end face of the base (2) and a base front-rear adjusting plate (9) slidably arranged on the top end face of the base left-right adjusting plate (10), and the product placement pad plate (11) is installed at the center position of the base front-rear adjusting plate (9); the top edge of the top end face of the front end of the base (2) and the top part of the right side end face are respectively fixedly provided with a U-shaped limiting groove (26), the right side end face of the base left-right adjusting plate (10) is horizontally fixedly provided with a base left-right adjusting rod (8) penetrating through the right side U-shaped limiting groove, the front side end face of the base front-rear adjusting plate (9) is horizontally fixedly provided with a base front-rear adjusting rod (7) penetrating through the front end U-shaped limiting groove, and the base left-right adjusting rod (8) and the base front-rear adjusting rod (7) are positioned through the threaded ends outside the U-shaped limiting grooves by the locking nuts (27).

4. The rotor core product key dimension detection apparatus according to claim 1, characterized by: The top end faces of the displacement sensor supports (25) located on both sides of the lower die displacement sensor (23) are provided with two limiting screws (24) for preventing the lower die displacement sensor (23) from being damaged in the process of being pressed down by the upper die detection block (22).

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