A rotor impedance detection device, detection machine and detection method

Abstract

This invention relates to the field of electric motors, and discloses a rotor impedance detection device, a detection machine, and a detection method. The rotor impedance detection device includes a detection platform, a detection mechanism, and a positioning mechanism. The detection mechanism contacts the rotor's commutator to detect whether the rotor's impedance is acceptable. The positioning mechanism is mounted on the detection platform and includes a positioning jig for positioning the rotor and a positioning component for driving the positioning jig to rotate. This invention also discloses a rotor impedance detection machine and a rotor impedance detection method. This invention uses a rotating component to drive the positioning jig and the rotor on it to rotate. When the detection mechanism determines the product to be unacceptable, the rotating component drives the positioning jig and the rotor to rotate. If the detection mechanism determines the product to be acceptable during rotation, then it is acceptable, greatly reducing the false judgment rate and improving the efficiency of the rotor impedance detection device.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a rotor impedance detection device, a detection machine and a detection method. Background Art

[0002] Currently, for the detection of rotor impedance, an automatic detection device is mostly used. The detection mechanism is used to detect a fixed rotor. The specific detection method is that the copper sheet or probe of the detection mechanism simultaneously contacts the commutator of the rotor, and the rotor is judged to be qualified or not by the detected resistance value. However, due to factors such as oxidation on the surface of the commutator of the rotor, the contact between the copper sheet or probe of the detection mechanism and the surface of the commutator is poor, resulting in misjudgment of the instrument (that is, judging a qualified product as an unqualified product). The misjudgment rate is between 0.5% and 1.0%, which has a great impact on the production efficiency of the automatic detection device. Summary of the Invention

[0003] Based on the above, the purpose of the present invention is to provide a rotor impedance detection device, a detection machine and a detection method, which can reduce the misjudgment rate of detection, improve the detection efficiency and the yield rate.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A rotor impedance detection device includes a detection platform, and further includes:

[0006] A detection mechanism for contacting the commutator of the rotor to detect whether the impedance of the rotor is qualified;

[0007] A positioning mechanism is disposed through the detection platform, and includes a positioning tire for positioning the rotor and a rotating component for driving the positioning tire to rotate.

[0008] As a preferred solution of the rotor impedance detection device, the rotating component includes a stepping motor and a conveyor belt connected to the output shaft of the stepping motor, and the conveyor belt is connected to the positioning tire.

[0009] As a preferred solution of the rotor impedance detection device, a synchronous gear is provided on the output shaft of the stepping motor, the conveyor belt is provided as a synchronous toothed belt, and the synchronous gear meshes with the synchronous toothed belt.

[0010] As a preferred solution of the rotor impedance detection device, the detection mechanism includes three copper sheets arranged at equal intervals along the circumference of the positioning mechanism, and the copper sheets are configured to be adjustable in distance from the positioning mechanism.

[0011] As a preferred solution of the rotor impedance detection device, the detection mechanism further includes a linear slide rail disposed on the detection platform and an insulating seat slidably connected to the linear slide rail, and the copper sheets are disposed on the insulating seat.

[0012] As a preferred solution of a rotor impedance detection device, a dial and three push rods are provided below the detection platform. One of the push rods is connected to one of the insulating seats, and the dial is configured to make the distance between each insulating seat and the positioning tire the same.

[0013] As a preferred solution of a rotor impedance detection device, a flanging extending in the rotation direction of the positioning tire is provided at one end of the copper sheet close to the positioning mechanism.

[0014] As a preferred solution of a rotor impedance detection device, a pressing mechanism is further provided above the positioning mechanism for pressing the rotor.

[0015] A rotor impedance detector includes the rotor impedance detection device according to any one of the above solutions.

[0016] A rotor impedance detection method uses the rotor impedance detection device or the rotor impedance detector according to any one of the above solutions, and includes the following steps:

[0017] The detection mechanism detects the impedance of the rotor. If the detection is qualified, it is determined to be qualified;

[0018] If the detection is unqualified, the rotating component drives the positioning tire to rotate. During the rotation, if the detection is qualified, it is determined to be qualified; if the detection is unqualified, it is determined to be unqualified.

[0019] The beneficial effects of the present invention are as follows: By providing a positioning tire to carry the rotor, by providing a detection mechanism to detect the rotor, and by providing a rotating component that can drive the positioning tire to rotate to drive the positioning tire and the rotor on the positioning tire to rotate. When the detection mechanism determines that the detected rotor is a defective product, the rotating component drives the positioning tire and the rotor to continue to rotate. During the rotation, if the detection mechanism determines that the detected rotor is a qualified product, it is a qualified product; if the detected rotor is always a defective product, it is determined to be a defective product, so as to greatly reduce the misjudgment rate of detection and improve the efficiency of the rotor impedance detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the content of the embodiments of the present invention and these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the rotor impedance detection device provided by the specific embodiment of the present invention.

[0022] In the picture:

[0023] 1-Detection platform; 11-Through hole;

[0024] 21-Copper sheet; 22-Linear slide rail; 23-Insulating base; 24-Dial; 241-Arc-shaped notch; 25-Push rod;

[0025] 31-Positioning tire; 321-Stepper motor; 322-Conveyor belt;

[0026] 4-Pressure mechanism. Detailed Implementation

[0027] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail 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.

[0028] like Figure 1 As shown, this embodiment provides a rotor impedance detection device, which includes a detection platform 1, a detection mechanism, and a positioning mechanism. The detection mechanism is disposed on the detection platform 1 and is used to contact the commutator of the rotor to detect whether the rotor impedance is qualified. The positioning mechanism is disposed on the detection platform 1 and includes a positioning jig 31 for positioning the rotor and a rotating assembly for driving the positioning jig 31 to rotate. The rotating assembly is disposed below the detection platform 1, the rotor is placed at one end of the positioning jig 31, and the other end of the positioning jig 31 is connected to the rotating assembly.

[0029] The rotor is positioned by setting a positioning jig 31 to support it. The rotor is tested by a detection mechanism. The positioning jig 31 and the rotor on it are rotated by a rotating component that can drive the positioning jig 31 to rotate. When the detection mechanism determines that the rotor is defective, the rotating component drives the positioning jig 31 and the rotor to rotate. If the detection mechanism determines that the rotor is qualified during the rotation, it is qualified. If the rotor is always defective, it is determined to be defective. This greatly reduces the false judgment rate of detection and improves the efficiency of the rotor impedance detection device.

[0030] Specifically, the rotating assembly includes a stepper motor 321 and a conveyor belt 322 connected to the output shaft of the stepper motor 321. The conveyor belt 322 is connected to the positioning tire 31. When the rotor fails the inspection and needs to be rotated, the output shaft of the stepper motor 321 rotates, and the positioning tire 31 and the rotor rotate together through the conveyor belt 322 to reduce the false detection rate.

[0031] To ensure more precise rotation of the positioning tire 31 and the rotor, a synchronous gear is provided on the output shaft of the stepper motor 321, and the conveyor belt 322 is set as a synchronous toothed belt. The synchronous gear meshes with the synchronous toothed belt. When the output shaft of the stepper motor 321 rotates, the synchronous gear on the output shaft meshes with the synchronous toothed belt to accurately transmit the rotation of the stepper motor 321 to the positioning tire 31 and the rotor.

[0032] Furthermore, the detection mechanism includes three copper plates 21 evenly spaced along the circumference of the positioning mechanism, with a 120-degree interval between adjacent copper plates 21. The three copper plates 21 are in contact with the surface of the rotor to detect the rotor impedance. The distance between the copper plates 21 and the positioning mechanism is adjustable to avoid damage to the copper plates 21 when the rotor is installed or removed. At the same time, it also enables the rotor impedance detection device to be used for measuring rotors of different diameters, improving the versatility of the rotor impedance detection device.

[0033] Specifically, the testing mechanism also includes a linear slide rail 22 set on the testing platform 1 and an insulating seat 23 slidably connected to the linear slide rail 22. A copper sheet 21 is set on the insulating seat 23, and the insulating seat 23 drives the copper sheet 21 to slide on the linear slide rail 22 to realize the function of adjustable distance between the copper sheet 21 and the positioning mechanism.

[0034] In this embodiment, a dial 24 and three push rods 25 are provided below the detection platform 1. The detection platform 1 has three through holes 11. One push rod 25 passes through one through hole 11 and is connected to an insulating seat 23. The dial 24 has three arc-shaped notches 241 evenly spaced axially. One push rod 25 abuts against one arc-shaped notch 241. The dial 24 and the positioning jig 31 are coaxially rotatable. When the dial 24 rotates, the push rods 25 slide along the arc-shaped notches 241 of the dial 24, thereby causing the insulating seats 23 to slide on the linear slide rail 22, so that the distance between each insulating seat 23 and the positioning jig 31 is the same, ensuring that each copper sheet 21 is in contact with the rotor.

[0035] Preferably, the copper sheet 21 has a flange extending in the rotation direction of the positioning jig 31 at one end near the positioning mechanism, and the part where the flange and the copper sheet 21 connect is in contact with the rotor. To ensure smoother rotation of the positioning jig 31, the flange extends in the rotation direction of the positioning jig 31. More preferably, the flange and the copper sheet 21 are integrally formed and manufactured using bending technology.

[0036] To ensure the stable installation of the rotor on the positioning tire 31, the rotor impedance detection device also includes a pressing mechanism 4 located above the positioning mechanism. Specifically, the pressing mechanism 4 is a cylinder used to press the rotor on the positioning tire 31 to prevent misalignment during the rotation of the positioning tire 31.

[0037] This embodiment also provides a rotor impedance detector, which includes the rotor impedance detection device described in any of the above solutions, and further includes a supply device for sequentially placing the rotors to be detected on the rotor impedance detection device.

[0038] This embodiment also provides a rotor impedance detection method, which uses the rotor impedance detection device or the rotor impedance detector described in any of the above solutions, and specifically includes the following steps:

[0039] The detection mechanism detects the impedance of the rotor. If the detection is qualified, it is determined to be qualified;

[0040] If the detection is unqualified, the rotating component drives the positioning tire 31 to rotate. During the rotation, if the detection is qualified, it is determined to be qualified; if the detection is unqualified, it is determined to be unqualified.

[0041] The rotor impedance detection device, the rotor impedance detector and the rotor impedance detection method can greatly reduce the misjudgment rate of detection.

[0042] Note that the above is only the preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A rotor impedance detection device, comprising a detection platform (1), characterized in that, Further comprising: A detection mechanism for contacting the commutator of the rotor to detect whether the impedance of the rotor is qualified; A positioning mechanism is disposed through the detection platform (1), including a positioning tire (31) for positioning the rotor and a rotating component for driving the positioning tire (31) to rotate; The detection mechanism includes three copper sheets (21) arranged at equal intervals in the circumferential direction of the positioning mechanism, and the distance between the copper sheets (21) and the positioning mechanism is adjustable; The detection mechanism further includes a linear slide rail (22) disposed on the detection platform (1) and an insulating seat (23) slidably connected to the linear slide rail (22), and the copper sheet (21) is disposed on the insulating seat (23); A dial (24) and three push rods (25) are disposed below the detection platform (1), one push rod (25) is connected to one insulating seat (23), and the dial (24) is configured to make the distance between each insulating seat (23) and the positioning tire (31) the same; Three arc-shaped notches (241) are arranged at equal intervals in the axial direction on the dial (24), and one push rod (25) abuts against one arc-shaped notch (241).

2. The rotor impedance detection device according to claim 1, characterized in that, The rotating component includes a stepping motor (321) and a conveyor belt (322) connected to the output shaft of the stepping motor (321), and the conveyor belt (322) is connected to the positioning tire (31).

3. The rotor impedance detection device according to claim 2, characterized in that, A synchronous gear is disposed on the output shaft of the stepping motor (321), the conveyor belt (322) is provided as a synchronous toothed belt, and the synchronous gear meshes with the synchronous toothed belt.

4. The rotor impedance detection device according to claim 1, characterized in that, One end of the copper sheet (21) close to the positioning mechanism is provided with a flanging extending in the rotation direction of the positioning tire (31).

5. The rotor impedance detection device according to any one of claims 1-4, characterized in that, Further comprising a pressing mechanism (4) disposed above the positioning mechanism for pressing the rotor.

6. A rotor impedance testing machine, characterized in that, Comprising the rotor impedance detection device according to any one of claims 1-5.

7. A method for detecting rotor impedance, characterized in that, Using the rotor impedance detection device according to any one of claims 1-5 or the rotor impedance detection machine according to claim 6, comprising the following steps: The detection mechanism detects the impedance of the rotor, and if the detection is qualified, it is determined to be qualified; If the detection is unqualified, the rotating component drives the positioning tire (31) to rotate. During the rotation, if the detection is qualified, it is determined to be qualified, and if the detection is unqualified, it is determined to be unqualified.

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