Brushless motor rotor skewed pole angle rapid adjusting device and method thereof

Abstract

The invention discloses a brushless motor rotor skew pole angle rapid adjusting device and method, and the device comprises a pedestal which is fixedly disposed on a workbench of a press machine, is provided with a first through hole which is vertically disposed, and is provided with an indication mark; the rotary table is used for placing a rotor core and is rotatably mounted on the base, a second through hole coaxial with an inner ring hole of the rotor core is formed in the center of the rotary table, the press machine is provided with a liftable upper pressing head, the upper pressing head is detachably provided with a rotating shaft, the rotating shaft is coaxially arranged above the second through hole, and the upper pressing head is detachably provided with a rotating shaft. The second penetrating hole and the first penetrating hole are coaxially arranged, and the rotary disc is provided with angle scale marks which are arranged in the circumferential direction of the rotary disc. And the locking piece is mounted on the turntable. The motor rotor assembling tool solves the problems that in the prior art, an iron core needs to be additionally machined, and only a fixed skewed pole angle can be assembled in a motor rotor assembling tool.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a device and method for quickly adjusting the skew angle of a brushless motor rotor. Background Art

[0002] The motor rotor skew angle refers to the angle between the center line of the motor rotor and the center line of the permanent magnet pole. Its size will affect the performance of the motor, such as power, efficiency and output torque. Therefore, motor manufacturers must consider the impact of this angle in the design to improve the efficiency and performance of the motor. In the early stage of motor development, in addition to studying the impact of different rotor skew angles on the motor cogging torque in simulation software, it is also necessary to use real rotors with different skew angles for assembly verification.

[0003] For small batch production, the motor rotor assembly tooling in the prior art has the problem of requiring additional processing of the core and can only assemble fixed skew angles. In order to quickly verify the effect of different rotor skew angles on the tooth slots, it is necessary to design a device that can quickly adjust the assembly angle.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] In order to overcome the defects of the prior art, a brushless motor rotor skew angle quick adjustment device and method are provided to solve the problems in the prior art that the motor rotor assembly tooling requires additional processing of the iron core and can only assemble a fixed skew angle.

[0006] In order to achieve the above object, a brushless motor rotor skew angle quick adjustment device is provided, comprising:

[0007] A base is fixed on the workbench of the press, the base is provided with a first vertical through hole, and an indication mark is provided on the base;

[0008] A turntable for placing the rotor core is rotatably mounted on the base, a second through hole coaxially arranged with the inner ring hole of the rotor core is opened at the center of the turntable, the press has a liftable upper pressure head, the upper pressure head is detachably mounted with a rotating shaft, the rotating shaft is coaxially arranged above the second through hole, the second through hole is coaxially arranged with the first through hole, the turntable is provided with angle scale lines, and the angle scale lines are arranged along the circumferential direction of the turntable;

[0009] A locking piece for locking the base is installed on the turntable. After the locking piece locks the base, the upper pressure head descends to allow the rotating shaft to be inserted into the inner ring hole of the rotor core.

[0010] Furthermore, a plug-in tube is formed at the lower opening of the second through hole, and the plug-in tube is rotatably inserted into the first through hole.

[0011] Furthermore, the plug-in tube is rotatably inserted into the first through hole via a bearing.

[0012] Furthermore, the turntable is provided with an eccentrically arranged threaded hole, the locking member is formed with an external thread, the locking member is screwed into the threaded hole, and the locking member extends to the bottom of the threaded hole and is pressed against the chassis.

[0013] Furthermore, there are multiple threaded holes, and the multiple threaded holes are arranged at intervals along the circumferential direction of the turntable.

[0014] Furthermore, the plurality of threaded holes are arranged at equal intervals.

[0015] The present invention provides a method for quickly adjusting the skew angle of a brushless motor rotor of a brushless motor rotor skew angle quick adjustment device, comprising the following steps:

[0016] a. Rotate the turntable so that the zero mark of the angle scale of the turntable is aligned with the indicator mark on the chassis;

[0017] b. After the zero scale line is aligned with the indicator mark, the locking member locks the base to prevent the turntable from rotating;

[0018] c. placing a section of the rotor core on the turntable so that the inner annular hole of the rotor core is coaxially arranged on the second through hole of the turntable;

[0019] d. Install the rotating shaft on the upper pressing head of the press so that the rotating shaft is coaxially arranged above the inner ring hole of the rotor core;

[0020] e. The upper pressure head is lowered to allow the rotating shaft to be inserted into the inner ring hole of the rotor core;

[0021] f. The upper pressure head rises to lift the rotating shaft;

[0022] g. Release the locking member to unlock the chassis, rotate the turntable to a preset angle, and lock the base with the locking member again, repeat steps b to f, and sleeve the multi-section rotor core on the shaft section by section to complete the assembly of the skew pole rotor with a specific skew pole angle.

[0023] The beneficial effects of the present invention are that the brushless motor rotor skew angle rapid adjustment device of the present invention adopts relative rotation of the chassis and the turntable to quickly adjust the skew angle of the rotor core, and then uses a locking piece for mechanical positioning, and the upper pressing head of the press is used to pass the rotating shaft through the rotor core, thereby realizing rapid verification of the design scheme of the skew pole rotor with different skew angles, and the pressing angle is accurate, the error is small, and no additional processing of the rotor core is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0025] Figure 1 Schematic diagram of the structure of a device for quickly adjusting the skew angle of a brushless motor rotor according to an embodiment of the present invention.

[0026] Figure 2 It is a cross-sectional view of a device for quickly adjusting the skew angle of a brushless motor rotor according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] Reference Figure 1 and Figure 2 As shown, the present invention provides a brushless motor rotor skew angle quick adjustment device, comprising: a base 1, a turntable 2, and a locking member 3.

[0030] In this embodiment, the brushless motor rotor skew angle quick adjustment device of the present invention is installed on a press. Preferably, the press is a servo press. The press has an upper press head 4 that can be raised and lowered. The upper press head is used to install the rotating shaft of the brushless motor.

[0031] Specifically, the base 1 is fixed on the workbench of the press machine. The base 1 is provided with a first vertically arranged through hole. The base 1 is provided with an indication mark 11.

[0032] In this embodiment, the base is cylindrical in shape as a whole, and the indicator mark is arranged on the circumferential surface of the base.

[0033] The turntable 2 is rotatably mounted on the base 1. The turntable 2 is used for placing the rotor core 5. Specifically, a socket ring groove is formed on the turntable 2. The rotor core is vertically and detachably inserted into the socket ring groove on the turntable.

[0034] A second through hole is provided at the center of the turntable 2. The second through hole is coaxially arranged with the inner ring hole of the rotor core 5. The rotating shaft 6 is coaxially arranged above the second through hole. The second through hole is coaxially arranged with the first through hole. The turntable 2 is provided with angle scale lines 21. The angle scale lines 21 are arranged along the circumferential direction of the turntable 2. The angle scale lines are arranged on the circumferential surface of the turntable.

[0035] The locking member 3 is mounted on the turntable 2. The locking member 3 is used to lock the base 1 to prevent the turntable from rotating.

[0036] After the locking member 3 locks the base 1 , the upper pressing head 4 descends to allow the rotating shaft 6 to be inserted into the inner ring hole of the rotor core 5 .

[0037] In this embodiment, the lower opening of the second through hole of the rotating disk is formed with a plug-in tube 22. The plug-in tube 22 is rotatably inserted in the first through hole. The outer diameter of the plug-in tube is adapted to the inner diameter of the first through hole.

[0038] Continue reading Figure 2 As shown, the insertion tube 22 is rotatably inserted into the first through hole via a bearing 23 .

[0039] In this embodiment, the turntable 2 is provided with an eccentrically arranged threaded hole. The locking member is formed with an external thread. The locking member is screwed into the threaded hole of the turntable. The locking member extends below the threaded hole of the turntable and presses against the bottom plate.

[0040] As a preferred embodiment, there are multiple threaded holes, which are arranged at intervals along the circumference of the rotating disk 2 .

[0041] In this embodiment, the plurality of threaded holes are arranged at equal intervals.

[0042] The present invention provides a method for quickly adjusting the skew angle of a brushless motor rotor of a brushless motor rotor skew angle quick adjustment device, comprising the following steps:

[0043] a. Rotate the turntable 2 so that the zero mark of the angle mark 21 of the turntable 2 is aligned with the indicator mark 11 of the chassis.

[0044] b. After the zero scale line is aligned with the indicator mark 11, the locking member 3 locks the base 1 to prevent the turntable 2 from rotating.

[0045] c. Place a section of the rotor core 5 on the turntable 2 so that the inner annular hole of the rotor core 5 is coaxially arranged on the second through hole of the turntable 2 .

[0046] d. Install the rotating shaft 6 on the upper pressing head 4 of the press machine so that the rotating shaft 6 is coaxially arranged above the inner ring hole of the rotor core 5.

[0047] e. The upper pressure head 4 is lowered to allow the rotating shaft 6 to be inserted into the inner ring hole of a section of the rotor core 5.

[0048] f. The upper pressure head 4 rises to lift the rotating shaft 6.

[0049] g. Release the locking piece 3 to unlock the chassis, rotate the turntable 2 to a preset angle, and lock the base 1 with the locking piece 3 again, repeat steps b to f, and sleeve the multi-section rotor core 5 on the shaft 6 section by section to complete the assembly of the skewed pole rotor with a specific skewed pole angle.

[0050] The brushless motor rotor skew angle rapid adjustment method using the brushless motor rotor skew angle rapid adjustment device of the present invention can realize rapid adjustment of different rotor skew angles to assemble skew rotors with different skew angles.

[0051] The brushless motor rotor skew angle rapid adjustment device of the present invention adopts relative rotation of the chassis and the turntable to quickly adjust the skew angle of the rotor core, and then uses a locking piece for mechanical positioning. The rotating shaft is inserted into the rotor core through the upper pressing head of the press, thereby realizing rapid verification of the design scheme of the skew pole rotor with different skew angles, and the pressing angle is accurate with small error.

[0052] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other.

Claims

1. A brushless motor rotor skew angle rapid adjustment device, characterized in that: include: A base is fixed on the workbench of the press, the base is provided with a first vertical through hole, and an indication mark is provided on the base; A turntable for placing the rotor core is rotatably mounted on the base, a second through hole coaxially arranged with the inner ring hole of the rotor core is opened at the center of the turntable, the press has a liftable upper pressure head, the upper pressure head is detachably mounted with a rotating shaft, the rotating shaft is coaxially arranged above the second through hole, the second through hole is coaxially arranged with the first through hole, the turntable is provided with angle scale lines, and the angle scale lines are arranged along the circumferential direction of the turntable; A locking piece for locking the base is installed on the turntable. After the locking piece locks the base, the upper pressure head descends to allow the rotating shaft to be inserted into the inner ring hole of the rotor core.

2. The brushless motor rotor skew angle rapid adjustment device according to claim 1, characterized in that: The lower opening of the second through hole is formed with an insertion tube, and the insertion tube is rotatably inserted into the first through hole.

3. The brushless motor rotor skew angle rapid adjustment device according to claim 2, characterized in that: The insert tube is rotatably inserted into the first through hole via a bearing.

4. The brushless motor rotor skew angle rapid adjustment device according to claim 1, characterized in that: The rotating disk is provided with an eccentrically arranged threaded hole, the locking piece is formed with an external thread, the locking piece is screwed into the threaded hole, and the locking piece extends to the bottom of the threaded hole and is pressed against the bottom plate.

5. The brushless motor rotor skew angle rapid adjustment device according to claim 4, characterized in that: There are multiple threaded holes, and the multiple threaded holes are arranged at intervals along the circumferential direction of the rotating disk.

6. The brushless motor rotor skew angle rapid adjustment device according to claim 5, characterized in that: The plurality of threaded holes are arranged at equal intervals.

7. A method for quickly adjusting the skew angle of a brushless motor rotor using the device for quickly adjusting the skew angle of a brushless motor rotor as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: a. Rotate the turntable so that the zero mark of the angle scale of the turntable is aligned with the indicator mark on the chassis; b. After the zero scale line is aligned with the indicator mark, the locking member locks the base to prevent the turntable from rotating; c. placing a section of the rotor core on the turntable so that the inner annular hole of the rotor core is coaxially arranged on the second through hole of the turntable; d. Install the rotating shaft on the upper pressing head of the press so that the rotating shaft is coaxially arranged above the inner ring hole of the rotor core; e. The upper pressure head is lowered to allow the rotating shaft to be inserted into the inner ring hole of the rotor core; f. The upper pressure head rises to lift the rotating shaft; g. Release the locking member to unlock the chassis, rotate the turntable to a preset angle, and lock the base with the locking member again, repeat steps b to f, and sleeve the multi-section rotor core on the shaft section by section to complete the assembly of the skew pole rotor with a specific skew pole angle.

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