Core structure with low residual torque

Abstract

The utility model relates to a kind of core structure of low residual torque. Including core body, the core body is equipped with slot, slot is located on the main path of magnetic flux, for guiding the trend of magnetic field to reduce residual torque. It solves the technical scheme in the prior art generally adopts the way of slotting on the inner diameter of core to reduce residual torque, this method reduces the influence of magnetic field interlinkage by changing the trend of magnetic circuit. However, the conventional slotting position is usually located in the non-main magnetic path area, its effect is limited and unstable, cannot completely solve the technical problem of residual torque.

Description

Technical Field

[0001] This utility model relates to the field of iron core structure, and in particular to an iron core structure with low residual torque. Background Technology

[0002] During operation, servo motors, due to the presence of magnets in the rotor, experience magnetic field linkage during rotation, leading to residual torque. This residual torque causes vibration during motor operation, severely impacting the motor's accuracy and stability. Currently, the industry commonly uses slotting on the inner diameter of the core to reduce residual torque. This method reduces the impact of magnetic field linkage by altering the magnetic circuit. However, traditional slotting locations are typically situated in non-main magnetic circuit regions, resulting in limited and unstable effectiveness, failing to completely resolve the residual torque problem. Furthermore, existing slotting designs lack specificity, failing to adequately consider the distribution of the main magnetic flux path, leading to unsatisfactory improvement. Therefore, there is an urgent need for a core structure that can more effectively reduce residual torque, fundamentally solving the motor vibration problem and improving motor performance by optimizing the slotting location and shape. Utility Model Content

[0003] This application provides a core structure with low residual torque, solving the problem of using slots in the inner diameter of the core, a common method in existing technologies, to reduce residual torque. This method reduces the influence of magnetic field linkage by changing the direction of the magnetic circuit. However, traditional slots are usually located in non-main magnetic circuit regions, resulting in limited and unstable effects, and cannot completely solve the technical problem of residual torque.

[0004] The technical solutions adopted in the embodiments of this application are as follows.

[0005] A core structure with low residual torque includes a core body with slots located on the main magnetic flux path to guide the magnetic field and reduce residual torque.

[0006] A further technical solution is that the shape and position of the slot are optimized to achieve a reduction in residual torque of 35% to 43%.

[0007] A further technical solution is as follows: there are multiple slots, the slots are arc-shaped and symmetrically distributed on both sides of the main magnetic flux path of the iron core body.

[0008] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. By employing a core body and a slotted design, and optimizing the position and shape of the slots, the operating performance of the servo motor is significantly improved. Firstly, the slots are located on the main magnetic flux path, which more effectively guides the magnetic field, thereby greatly reducing residual torque. Compared to traditional slotting methods, this invention has a more direct and efficient impact on the magnetic circuit, ensuring the uniformity of the magnetic field distribution. Secondly, the symmetrical design of the slots further balances the magnetic circuit, avoiding additional jitter caused by magnetic field asymmetry. Furthermore, the core structure of this invention is simple and easy to implement, requiring no complex processing techniques, and is suitable for mass production. In practical applications, the motor runs more smoothly, with significantly reduced jitter, improving the motor's accuracy and reliability. Overall, this invention, through targeted slotting design, solves the residual torque problem in traditional technologies, providing an effective solution for optimizing the performance of servo motors. Attached Figure Description

[0009] Figure 1 This is a front view of a core structure with low residual torque according to an embodiment of the present invention.

[0010] In the diagram: 1. Iron core body; 2. Slotted section. Detailed Implementation

[0011] This application provides a core structure with low residual torque, solving the problem of using slots in the inner diameter of the core, a common method in existing technologies, to reduce residual torque. This method reduces the influence of magnetic field linkage by changing the direction of the magnetic circuit. However, traditional slots are usually located in non-main magnetic circuit regions, resulting in limited and unstable effects, and cannot completely solve the technical problem of residual torque.

[0012] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows: To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0013] A core structure with low residual torque, such as Figure 1 As shown, it includes an iron core body 1, on which a slot 2 is provided. The slot 2 is located on the main magnetic flux path and is used to guide the direction of the magnetic field to reduce residual torque.

[0014] The shape and position of slot 2 were optimized to achieve a reduction in residual torque of 35% to 43%.

[0015] There are multiple slots 2, which are symmetrically distributed on the main magnetic flux path of the iron core body 1.

[0016] A low residual torque iron core structure includes an iron core body 1 with slots 2 located on the main magnetic flux path 3. The slots 2 are arc-shaped and symmetrically distributed on both sides of the main magnetic flux path 3 of the iron core body 1. By optimizing the position and shape of the slots 2, the magnetic field direction is effectively guided, thereby significantly reducing residual torque. In practical applications, the iron core body 1 is mounted on the rotor of a servo motor. The design of the slots 2 makes the magnetic field distribution more uniform during motor operation, reducing jitter caused by magnetic field linkage. Furthermore, the symmetrical distribution of the slots 2 further ensures the balance of the magnetic circuit and improves the operating stability of the motor.

[0017] Operating procedures Determine the main magnetic flux path of the iron core body 1.

[0018] A slot 2 is designed on the main magnetic flux path. The slot 2 is arc-shaped and symmetrically distributed on both sides of the iron core body 1.

[0019] The influence of slot 2 on the magnetic field direction is verified through simulation or experiment, and the position and size of slot 2 are optimized.

[0020] The optimized iron core structure is machined and installed on the rotor of the servo motor.

[0021] Test the residual torque and vibration of the motor during operation to ensure that the design of slot 2 achieves the expected results.

[0022] Beneficial effects By employing a core body 1 and slotted sections 2, and optimizing the position and shape of the slots, the operating performance of the servo motor is significantly improved. Firstly, the slots are located on the main magnetic flux path, which more effectively guides the magnetic field, thereby greatly reducing residual torque. Compared to traditional slotting methods, this invention has a more direct and efficient impact on the magnetic circuit, ensuring the uniformity of the magnetic field distribution. Secondly, the symmetrical design of the slots further balances the magnetic circuit, avoiding additional jitter caused by magnetic field asymmetry. Furthermore, the core structure of this invention is simple and easy to implement, requiring no complex processing techniques, and is suitable for mass production. In practical applications, the motor runs more smoothly, with significantly reduced jitter, improving the motor's accuracy and reliability. Overall, this invention, through targeted slotting design, solves the residual torque problem in traditional technologies, providing an effective solution for optimizing the performance of servo motors.

[0023] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0024] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A core structure of low residual torque comprising a core body (1), characterized in that: The iron core body (1) is provided with grooves (2) on it, the grooves (2) are located on the main magnetic flux path, and are used for guiding the magnetic field to reduce the residual torque, the grooves (2) are multiple, the shape of the grooves (2) is arc-shaped, and the grooves (2) are symmetrically distributed on both sides of the main magnetic flux path (3) of the iron core body (1).

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