Indexing rotary iron core oil groove detector

Abstract

The utility model relates to the technical field of motor iron cores, in particular to an indexing rotation type iron core oil groove detector. Comprising a numerical control indexing rotating head, an iron core positioning mold arranged on the numerical control indexing rotating head and used for positioning an iron core, a visual identification camera arranged above the iron core and a backlight assembly arranged below the iron core, and the visual identification camera and the backlight assembly are arranged in the vertical direction and directly face each other; a plurality of vertical oil grooves penetrating up and down are formed in the iron core in the circumferential direction, and after the iron core is positioned to the iron core positioning mold, the vertical oil grooves of the iron core can rotate to the position between a shooting lens of the visual identification camera and the backlight assembly through rotation of the numerical control indexing rotating head. According to the utility model, the detection efficiency of the oil groove run-through condition on the iron core can be improved, and missing detection is prevented.

Description

Technical Field

[0001] This utility model relates to the field of motor core technology, specifically to an indexing rotary core oil groove detector. Background Technology

[0002] The iron core is the core component of an electric motor, and it is made by stacking a number of iron core laminations. The typical manufacturing process of an iron core is as follows: first, silicon steel sheets are stamped into iron core laminations, then the iron core laminations are stacked, and finally, the assembly of the motor iron core is formed by riveting, welding, or gluing.

[0003] like Figure 1 The iron core 22 is a typical motor iron core. This motor iron core has multiple oil grooves 5 running vertically through it, spaced out along the circumference. Considering that during the iron core stacking process, due to stacking process limitations and assembly errors, there may be a certain angular deviation in the circumferential direction during the stacking of iron core laminations, and that multiple iron core laminations stacked together may cause a certain cumulative angular deviation, when this deviation is large, it will cause the oil grooves on the stacked iron core to be unable to connect or the effective connecting area of ​​the oil grooves to be small, resulting in a defective iron core.

[0004] In existing technologies, the inspection of the continuity of oil grooves on the iron core is carried out manually, by visually observing whether the continuity of the oil grooves meets the requirements. This manual inspection method is inefficient, and because there are many oil grooves on the iron core, operators are prone to eye fatigue during batch inspections, which may lead to missed inspections. Utility Model Content

[0005] To address the aforementioned problems, this invention proposes a rotary indexing iron core oil groove detector, aiming to improve the detection efficiency of the oil groove continuity status on the iron core and prevent missed detections. The specific technical solution is as follows:

[0006] A rotary indexing iron core oil groove detector includes a CNC indexing rotary head, an iron core positioning mold for iron core positioning disposed on the CNC indexing rotary head, a vision recognition camera disposed above the iron core, and a backlight assembly disposed below the iron core. The vision recognition camera and the backlight assembly are arranged facing each other vertically. A plurality of vertically penetrating oil grooves are disposed along the circumference of the iron core. After the iron core is positioned on the iron core positioning mold, its vertical oil grooves can be rotated to a position between the shooting lens of the vision recognition camera and the backlight assembly by the rotation of the CNC indexing rotary head.

[0007] The outer diameter of the iron core positioning mold is smaller than the circumferential diameter of the vertical oil groove on the iron core.

[0008] Preferably, an installation platform is provided below the iron core positioning mold, the iron core positioning mold is fixed on the installation platform, and the backlight assembly is fixed on the installation platform.

[0009] Preferably, a camera bracket is provided on the mounting platform, and the visual recognition camera is fixed on the camera bracket.

[0010] In this utility model, the camera bracket includes a flange, a column erected on the flange, and a camera base fixed on the column. The flange is fixed on the mounting platform, and the visual recognition camera is fixed on the camera base.

[0011] To improve the versatility of the indexing rotary iron core oil tank detector, the camera base is provided with a positioning hole that slides with the column. The camera base is mounted on the column in a vertical direction through the positioning hole. The camera base is provided with fastening screws for fixing the camera base and the column to each other.

[0012] Preferably, the mounting platform is provided with a sliding plate that can move horizontally along the radial direction of the iron core. A T-slot is provided on the mounting platform below the sliding plate along the radial direction of the iron core. A T-bolt for fixing the sliding plate is connected between the sliding plate and the T-slot. The flange and the backlight assembly are both fixed on the sliding plate of the mounting platform.

[0013] In this invention, the backlight assembly includes a backlight box, a glass panel disposed on the upper end of the backlight box, and an LED light source disposed inside the backlight box.

[0014] As a further improvement of this utility model, a light-shielding mask is provided on the mounting platform above the glass panel, and the light-shielding mask is provided with a fan-shaped window that allows backlight to pass through; a support frame is also provided on the sliding plate of the mounting platform, and the light-shielding mask is fixed on the support frame.

[0015] Preferably, the light-shielding mask is detachably fixed to the support frame by fastening screws.

[0016] In this invention, the installation platform is also equipped with an alarm device, and the CNC indexing rotary head, visual recognition camera, LED backlight and alarm device are respectively connected to the controller.

[0017] Preferably, the detector is equipped with a slot detection display that can provide real-time feedback on the slot's continuity and whether there are foreign objects inside the slot, and the slot detection display is connected to the controller.

[0018] The working steps and principle of this utility model are as follows:

[0019] (1) Preparation: Adjust the radial position of the slide and the vertical position of the camera mount according to the size specifications of the iron core;

[0020] (2) Installation of positioning mold: Install the iron core positioning mold onto the CNC indexing rotary head;

[0021] (3) Core installation: Position the core onto the core positioning mold;

[0022] (4) Oil tank detection: Under the control of the controller, the CNC indexing rotary head rotates to rotate the vertical oil tank to be detected on the iron core to the position below the lens of the visual recognition camera. At the same time, the LED light source on the backlight assembly located below the vertical oil tank is turned on. The visual recognition camera captures a local image of the position of the vertical oil tank on the iron core. Based on the captured image, it detects whether the oil tank is transparent and obtains the specific transparent area information. If the transparent area reaches the specified value, the oil tank is judged to be a qualified oil tank that is connected from top to bottom. If the oil tank is detected to be not transparent or the transparent area does not reach the specified value, the oil tank is judged to be unqualified and an alarm is issued by the alarm device.

[0023] After a single oil groove on the iron core is inspected, the controller drives the CNC indexing rotary head to rotate a certain angle to inspect the next oil groove, until all vertical oil grooves on the iron core are inspected.

[0024] The beneficial effects of this utility model are:

[0025] First, this utility model provides a rotary indexing iron core oil groove detector. By mounting the iron core on a CNC indexing rotary head, and using visual recognition cameras and backlight components positioned at the top and bottom, it can detect all oil grooves on the iron core without omission and accurately obtain the effective through area of ​​the oil grooves on the iron core, thereby determining whether the oil grooves are qualified. This improves the detection accuracy and efficiency of the through area of ​​the oil grooves on the iron core and prevents missed detections.

[0026] Secondly, the indexing rotary iron core oil tank detector of this utility model has an adjustable vertical position of the visual recognition camera; the mounting platform is equipped with an adjustable sliding plate, and the visual recognition camera and backlight assembly can move together with the sliding plate to the required position, so as to adapt to the oil tank detection of iron cores of various specifications and sizes, and has good versatility.

[0027] Third, this utility model's indexing rotary iron core oil tank detector utilizes a light-shielding mask plate above the backlight assembly. The fan-shaped windows on the mask plate create directional and positional backlighting, preventing excessive backlight range from interfering with the visual recognition camera. This facilitates the camera acquiring high-quality images, improving the accuracy and reliability of oil tank identification. Furthermore, the light-shielding mask plate is detachable, allowing for easy replacement for different iron core oil tanks. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 yes Figure 1 A top view of the light-shielding mask in the image.

[0030] In the diagram: 1. CNC indexing rotary head, 2. Iron core positioning mold, 3. Vision recognition camera, 4. Backlight assembly, 5. Vertical oil tank, 6. Mounting platform, 7. Camera bracket, 8. Flange, 9. Column, 10. Camera mount, 11. Fastening screw, 12. Slide plate, 13. T-slot, 14. T-bolt, 15. Backlight box, 16. Glass panel, 17. LED light source, 18. Light-shielding mask, 19. Fan-shaped window, 20. Support frame, 21. Alarm device, 22. Iron core. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0032] like Figures 1 to 2 The illustration shows an embodiment of a rotary indexing iron core oil groove detector of the present invention, comprising a CNC rotary indexing head 1, an iron core positioning mold 2 for positioning an iron core 22 disposed on the CNC rotary indexing head 1, a visual recognition camera 3 disposed above the iron core 22, and a backlight assembly 4 disposed below the iron core 22. The visual recognition camera 3 and the backlight assembly 4 are arranged opposite each other in the vertical direction. A plurality of vertically penetrating oil grooves 5 are disposed on the iron core 22 along the circumferential direction. After the iron core 22 is positioned on the iron core positioning mold 2, its vertical oil grooves 5 can be rotated to a position between the shooting lens of the visual recognition camera 3 and the backlight assembly 4 by the rotation of the CNC rotary indexing head 1.

[0033] The outer diameter of the iron core positioning mold 2 is smaller than the circumferential diameter of the vertical oil groove 5 on the iron core 22.

[0034] Preferably, an installation platform 6 is provided below the iron core positioning mold 2, the iron core positioning mold 2 is fixed on the installation platform 6, and the backlight assembly 4 is fixed on the installation platform 6.

[0035] Preferably, a camera bracket 7 is provided on the mounting platform 6, and the visual recognition camera 3 is fixed on the camera bracket 7.

[0036] In this embodiment, the camera bracket 7 includes a flange 8, a column 9 erected on the flange 8, and a camera base 10 fixed on the column 9. The flange 8 is fixed on the mounting platform 6, and the visual recognition camera 3 is fixed on the camera base 10.

[0037] To improve the versatility of the indexing rotary iron core oil tank detector, the camera base 10 is provided with a positioning hole that slides with the column 9. The camera base 10 is moved along the vertical direction on the column 9 through the positioning hole. The camera base 10 is provided with fastening screws 11 for fixing the camera base 10 and the column 9 to each other.

[0038] Preferably, the mounting platform 6 is provided with a sliding plate 12 that can move horizontally along the radial direction of the iron core 22. A T-slot 13 is provided on the mounting platform 6 below the sliding plate 12 along the radial direction of the iron core 22. A T-bolt 14 for fixing the sliding plate 12 is connected between the sliding plate 12 and the T-slot 13. The flange 8 and the backlight assembly 4 are both fixed on the sliding plate 12 of the mounting platform 6.

[0039] In this embodiment, the backlight assembly 4 includes a backlight box 15, a glass panel 16 disposed on the upper end of the backlight box 15, and an LED light source 17 disposed inside the backlight box 15.

[0040] As a further improvement of this embodiment, a light-shielding mask 18 is provided on the mounting platform 6 at a position above the glass panel 16, and the light-shielding mask 18 is provided with a fan-shaped window 19 that can transmit backlight light; a support frame 20 is also provided on the sliding plate 12 of the mounting platform 6, and the light-shielding mask 18 is fixed on the support frame 20.

[0041] Preferably, the light-shielding mask 18 is detachably fixed to the support frame 20 by fastening screws.

[0042] In this embodiment, an alarm device 21 is also provided on the installation platform 6. The CNC indexing rotary head 1, the visual recognition camera 3, the LED backlight 17 and the alarm device 21 are respectively connected to the controller.

[0043] Preferably, the detector is equipped with a slot detection display that can provide real-time feedback on the slot's continuity and whether there are foreign objects inside the slot, and the slot detection display is connected to the controller.

[0044] The working steps and principles of this embodiment are as follows:

[0045] (1) Preparation: Adjust the radial position of the slide plate 12 and the vertical position of the camera mount 10 according to the size specifications of the iron core 22;

[0046] (2) Installation of positioning mold: Install the iron core positioning mold 2 onto the CNC indexing rotary head 1;

[0047] (3) Core installation: Position the core 22 onto the core positioning mold 2;

[0048] (4) Oil tank detection: Under the control of the controller, the CNC indexing rotary head 1 rotates to rotate the vertical oil tank 5 to be detected on the iron core 22 to the position below the lens of the visual recognition camera 3. At the same time, the LED light source 17 on the backlight assembly 4 located below the vertical oil tank 5 is turned on. The visual recognition camera 3 captures a partial image of the position of the vertical oil tank 5 on the iron core 22. Based on the captured image, it detects whether the oil tank is transparent and obtains the specific transparent area information. If the transparent area reaches the specified value, the oil tank is determined to be a qualified oil tank that is connected vertically. If the oil tank is not transparent or the transparent area does not reach the specified value, the oil tank is determined to be unqualified and the alarm device will issue an alarm.

[0049] After a single oil groove on the iron core 22 is inspected, the controller drives the CNC indexing rotary head 1 to rotate a certain angle to inspect the next oil groove, until all vertical oil grooves 5 on the iron core 22 are inspected.

[0050] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An indexing rotary core oil slot detector characterized by, The application relates to a core positioning device, which comprises a numerical control indexing rotary head, a core positioning die arranged on the numerical control indexing rotary head for core positioning, a visual identification camera arranged above the core, a backlight assembly arranged below the core, the visual identification camera and the backlight assembly being arranged opposite to each other in the up-down direction, and a plurality of vertical oil grooves being arranged on the core in the circumferential direction and penetrating the core in the up-down direction, wherein the vertical oil grooves can be rotated to the position between the shooting lens of the visual identification camera and the backlight assembly through the rotation of the numerical control indexing rotary head after the core is positioned to the core positioning die.

2. The graduated rotary core channel detector of claim 1, wherein, The outer diameter of the core positioning die is smaller than the circumferential diameter of the vertical oil grooves on the core.

3. The graduated rotary core channel detector of claim 1 wherein, A mounting platform is arranged below the core positioning die, the core positioning die is fixed on the mounting platform, and the backlight assembly is fixed on the mounting platform.

4. The graduated rotary core channel detector of claim 3 wherein, A camera support is arranged on the mounting platform, and the visual identification camera is fixed on the camera support.

5. A graduated rotary core channel detector according to claim 4, wherein, The camera support comprises a flange plate, a vertical column arranged on the flange plate, and a camera seat fixed on the vertical column, the flange plate is fixed on the mounting platform, and the visual identification camera is fixed on the camera seat.

6. A graduated rotary core channel detector according to claim 5, wherein, A positioning hole is arranged on the camera seat and is in sliding fit with the vertical column, the camera seat is arranged on the vertical column through the positioning hole and moves in the up-down direction, and a fastening screw is arranged on the camera seat and is used for fixing the camera seat and the vertical column relative to each other.

7. The graduated rotary core channel detector of claim 5 wherein, A sliding plate horizontally movable in the radial direction of the core is arranged on the mounting platform, a T-shaped groove is arranged on the mounting platform below the sliding plate and in the radial direction of the core, a T-shaped bolt is connected between the sliding plate and the T-shaped groove and is used for fixing the sliding plate, and the flange plate and the backlight assembly are both fixed on the sliding plate of the mounting platform.

8. The graduated rotary core channel detector of claim 1 wherein, The backlight assembly comprises a backlight box, a glass panel arranged on the upper end of the backlight box, and an LED light source arranged in the backlight box.

9. A graduated rotary core channel detector according to claim 8, wherein, An optical mask cover plate is arranged on the mounting platform above the glass panel, the optical mask cover plate is provided with a fan-shaped window capable of transmitting backlight, a support frame is further arranged on the sliding plate of the mounting platform, and the optical mask cover plate is fixed on the support frame.

10. The graduated rotary core channel detector of claim 1 wherein, An alarm device is further arranged on the mounting platform, the numerical control indexing rotary head, the visual identification camera, the LED backlight source and the alarm device are respectively connected with a controller, the detection instrument is provided with a groove detection display capable of instantaneously feeding back the through condition of the groove and whether there is foreign matter in the groove, and the groove detection display is connected with the controller.

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