New energy rotor core press-fitting tool

Abstract

The utility model relates to rotor core press -mounting technical field, especially a new energy rotor core press -mounting frock. Its technical scheme includes: base, rotor hub, first core body, mounting bracket, second core body and lower end plate, be equipped with rotor hub on the base, and the lower end plate is sleeved on the rotor hub, the base is placed with the transition positioning seat, both ends of transition positioning seat are all seted up with the notching, the rotor hub is sleeved with first core body and second core body, the bottom end surface of mounting bracket is equipped with the combined pressure head, the transition positioning seat is slidably inserted with the bolt, and the bolt is slidably inserted in the base through the reference hole of rotor hub, the transition positioning seat is installed with screw through the screw thread, the utility model satisfies the rotor core press -mounting, and the core is pressed into the guiding part from the mouth part of rotor hub when press -mounting, has the accurate positioning, and the operation is convenient, and the rotor press -mounting quality is also stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of rotor core pressing technology, specifically to a new energy rotor core pressing tool. Background Technology

[0002] The rotor core is a component of an electric motor assembly. It is formed by metal casting and is installed in the motor. The rotor core converts electrical energy into magnetic energy to form a magnetic field. The torque generated by the two magnetic fields controls the rotor to rotate accordingly, thereby converting magnetic energy into mechanical energy and realizing the rotation of the motor. The length of the rotor core assembled in the motor needs to be matched with that of the stator core.

[0003] The existing method for press-fitting rotor cores involves combining the four core pieces of the rotor and then pressing them into the rotor hub as a whole. The resulting rotor assembly not only has gaps and warping between the individual core layers, but more seriously, it is extremely difficult to achieve the standard value during dynamic balancing. Therefore, the press-fitting method for rotor cores needs to be improved. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a new energy rotor core pressing tool, which solves the problems mentioned in the background technology.

[0005] The solution to the above-mentioned technical problems provided by this utility model is as follows: A new energy rotor core pressing fixture includes a base, a rotor hub, a first core body, a mounting frame, a second core body, and a lower end plate. The base is provided with a rotor hub, and the lower end plate is sleeved on the rotor hub. A transition positioning seat is placed on the base, and notches are opened at both ends of the transition positioning seat. A first iron core body and a second iron core body are sleeved on the rotor hub. The bottom surface of the mounting bracket is provided with a combined pressure head.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the transition positioning seat is slidably sleeved inside the rotor hub, and the inner diameter of the rotor hub is adapted to the size of the transition positioning seat.

[0008] The beneficial effects of adopting the above-mentioned further solutions are: It can achieve a precise and smooth fit between the transition positioning seat and the rotor hub. During the pressing process, the transition positioning seat can stably position and support the first and second iron core bodies sleeved inside the rotor hub, ensuring the accuracy of the position of the iron core bodies inside the rotor hub and preventing them from shifting during pressing, thereby improving the pressing accuracy and product quality.

[0009] Furthermore, a pin is slidably inserted into the transition positioning seat, and the pin is slidably inserted into the base through the reference hole of the rotor hub.

[0010] The beneficial effects of adopting the above-mentioned further solutions are: The pin design further enhances the connection stability between the transition positioning seat, rotor hub, and base. During the press-fitting process, it effectively limits the relative displacement between the transition positioning seat and rotor hub, making the entire press-fitting fixture more stable under pressure, ensuring the reliability and consistency of the press-fitting operation, and preventing press-fitting deviations caused by loose components.

[0011] Furthermore, a screw is threadedly installed inside the transition positioning seat, and the screw is threadedly installed inside the base through the reference hole of the rotor hub.

[0012] The beneficial effects of adopting the above-mentioned further solutions are: Screws offer a more secure connection method, providing greater strength compared to pins. During press-fitting, they can withstand greater pressure, preventing separation or loosening between the transition positioning seat, rotor hub, and base. This ensures the structural integrity and stability of the press-fitting fixture during long-term use, extending its service life.

[0013] Furthermore, the two second iron core bodies are located at both ends of the two first iron core bodies.

[0014] The beneficial effects of adopting the above-mentioned further solutions are: This layout makes the rotor core structure more symmetrical and balanced after pressing, which helps the rotor maintain stability during rotation, reduces vibration and noise caused by uneven core distribution, improves the operating performance and reliability of new energy rotors, and meets the requirements of new energy equipment for high precision and stability of rotors.

[0015] Furthermore, the combined pressure head is threaded with bolts, and the bolts are threaded into the mounting bracket.

[0016] The beneficial effects of adopting the above-mentioned further solutions are: The threaded connection of bolts facilitates the installation and disassembly of the combined press head and mounting bracket. During routine maintenance and upkeep of the tooling, and when changing the combined press head to meet different core pressing requirements, operation is quick and convenient, improving the tooling's versatility and flexibility, reducing equipment maintenance costs and downtime. The mounting bracket is located on the output shaft of the hydraulic press, allowing the hydraulic press to work in conjunction with the mounting bracket to use the combined press head. This allows the combined press head to press one first core body onto the rotor hub, positioned at the top surface of the lower end plate, and then progressively press the second and first core bodies one by one. During pressing, the second and first core bodies only need to be heated to a suitable temperature before pressing; there is no need to freeze the rotor hub, simplifying the rotor manufacturing process and reducing manufacturing costs.

[0017] Furthermore, the inner wall of the combined pressure head is provided with a limiting block, and the limiting block is limited by a notch on the transition positioning seat.

[0018] The beneficial effects of adopting the above-mentioned further solutions are: The engagement between the limiting block and the notch on the transition positioning seat provides precise guidance and positioning for the combined pressing head during the pressing process. This ensures that the combined pressing head maintains the correct position and orientation during pressing, accurately pressing the first and second iron core bodies, preventing incomplete pressing or damage to the iron cores due to pressing head misalignment, and greatly improving the accuracy and success rate of pressing.

[0019] This utility model provides a tooling for pressing a new energy rotor core. It has the following advantages: High-precision press fitting: The transition positioning seat is precisely matched with the rotor hub, which can stably support the iron core body, prevent press fitting deviation, and improve press fitting accuracy and product quality.

[0020] Sturdy and reliable structure: Pins and screws strengthen the connection between the transition positioning seat, rotor hub and base, ensuring structural stability and reliable and consistent operation during press-fitting.

[0021] Improve rotor performance: The symmetrical layout of the iron core reduces rotational vibration and noise, thereby improving the operating performance and reliability of new energy rotors.

[0022] Easy and flexible maintenance: Bolted connections facilitate the installation and disassembly of the combined pressure head and mounting bracket, making it convenient to maintain and replace the pressure head, improving the versatility of tooling, and reducing costs.

[0023] Simplified manufacturing process: Heated iron core pressing eliminates the need for frozen rotor hub, simplifying rotor manufacturing process and reducing manufacturing costs.

[0024] Accurate and efficient pressing: The limit block and notch work together to provide precise guidance and limit for the combined pressing head, improving the accuracy and success rate of pressing. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0026] In the attached diagram: Figure 1 This is an assembly diagram of the present invention; Figure 2 This is an exploded view of the present invention.

[0027] The attached diagram lists the components represented by each number as follows: 1. Base; 2. Rotor hub; 3. Transition positioning seat; 301. Pin; 302. Screw; 303. Notch; 4. First iron core body; 5. Mounting bracket; 501. Combined pressure head; 502. Bolt; 503. Limiting block; 6. Second iron core body; 7. Lower end plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1 to 2 As shown, the embodiments provided by this utility model are as follows: Example 1 A new energy rotor core pressing fixture includes a base 1, a rotor hub 2, a first core body 4, a mounting frame 5, a second core body 6, and a lower end plate 7. The base 1 is provided with the rotor hub 2, and the lower end plate 7 is sleeved on the rotor hub 2. A transition positioning seat 3 is placed on the base 1. Both ends of the transition positioning seat 3 are provided with notches 303. The first iron core body 4 and the second iron core body 6 are sleeved on the rotor hub 2. The bottom end face of the mounting bracket 5 is provided with a combined pressure head 501; The transition positioning seat 3 is slidably sleeved inside the rotor hub 2, and the inner diameter of the rotor hub 2 is adapted to the size of the transition positioning seat 3, which can achieve a precise and smooth fit between the transition positioning seat 3 and the rotor hub 2. During the pressing process, the transition positioning seat 3 can stably position and support the first iron core body 4 and the second iron core body 6 sleeved inside the rotor hub 2, ensuring the accuracy of the position of the iron core body inside the rotor hub 2 and preventing it from shifting during pressing, thereby improving the pressing accuracy and product quality. A pin 301 is slidably inserted into the transition positioning seat 3, and the pin 301 is slidably inserted into the base 1 through the reference hole of the rotor hub 2. The setting of the pin 301 further enhances the connection stability between the transition positioning seat 3, the rotor hub 2 and the base 1. During the pressing process, it can effectively limit the relative displacement of the transition positioning seat 3 and the rotor hub 2, making the entire pressing fixture more stable when subjected to pressure, ensuring the reliability and consistency of the pressing operation, and avoiding pressing deviations due to loose parts. A screw 302 is threadedly installed inside the transition positioning seat 3, and the screw 302 is threaded into the base 1 through the reference hole of the rotor hub 2. The screw 302 provides a more secure connection method, with higher connection strength compared to the pin 301. During press fitting, it can withstand greater pressure, preventing separation or loosening between the transition positioning seat 3, the rotor hub 2, and the base 1, ensuring the structural integrity and stability of the press fitting fixture during long-term use, and extending the service life of the fixture. The two second iron core bodies 6 are located at both ends of the two first iron core bodies 4. This layout makes the rotor iron core structure more symmetrical and balanced after pressing, which is conducive to the rotor maintaining stability during rotation, reducing vibration and noise caused by uneven iron core distribution, improving the operating performance and reliability of the new energy rotor, and meeting the requirements of new energy equipment for high precision and stability of the rotor.

[0030] Example 2 To avoid wear and tear on the pressed parts after pressing, making replacement inconvenient, for example, such as Figures 1 to 2 As shown, this utility model also includes: a base 1, a rotor hub 2, a first iron core body 4, a mounting bracket 5, a second iron core body 6, and a lower end plate 7. The base 1 is provided with a rotor hub 2, and the rotor hub 2 is sleeved with a lower end plate 7. A transition positioning seat 3 is placed on the base 1. Both ends of the transition positioning seat 3 are provided with notches 303. The first iron core body 4 and the second iron core body 6 are sleeved on the rotor hub 2. The bottom end face of the mounting bracket 5 is provided with a combined pressure head 501; The combined press head 501 is threadedly fitted with bolts 502, which are also threadedly installed in the mounting bracket 5. This threaded connection facilitates the installation and disassembly of the combined press head 501 and the mounting bracket 5. During routine maintenance and upkeep of the tooling, and when replacing the combined press head 501 for different core pressing requirements, the operation is quick and convenient, improving the tooling's versatility and flexibility, reducing equipment maintenance costs and downtime. The mounting bracket 5 is located on the output shaft of the hydraulic press, allowing the hydraulic press to work with the mounting bracket 5 to press the combined press head 501. This allows the combined press head 501 to press one first core body 4 onto the rotor hub 2, positioned on the top surface of the lower end plate 7, and then progressively press the second core body 6 and the first core body 4 one by one. The inner wall of the combined pressure head 501 is provided with a limiting block 503, which is limited by a notch 303 on the transition positioning seat 3. The cooperation between the limiting block 503 and the notch 303 on the transition positioning seat 3 provides precise guidance and limitation for the combined pressure head 501 during the pressing process. This ensures that the combined pressure head 501 maintains the correct position and orientation when pressing down, accurately pressing the first iron core body 4 and the second iron core body 6, avoiding misalignment of the pressure head that could cause incomplete pressing or damage to the iron core, and greatly improving the accuracy and success rate of pressing.

[0031] Working principle: First, the base 1 serves as the basic support component of the entire tooling, and the rotor hub 2 on it is used to connect the lower end plate 7 and the first iron core body 4 and the second iron core body 6 to be pressed in later.

[0032] The transition positioning seat 3, placed on the base 1, has notches 303 at both ends that play an important role in subsequent work. The transition positioning seat 3 is slidably fitted inside the rotor hub 2. Since the inner diameter of the rotor hub 2 is adapted to the size of the transition positioning seat 3, the transition positioning seat 3 can stably position and support the iron core body inside the rotor hub 2, ensuring the accurate position of the iron core body during the pressing process and avoiding displacement.

[0033] When the tooling is installed and fixed, the pin 301, which is slidably inserted into the transition positioning seat 3, is slidably inserted into the base 1 through the reference hole of the rotor hub 2, which enhances the connection stability between the transition positioning seat 3, the rotor hub 2 and the base 1 and limits their relative displacement. At the same time, the screw 302, which is threaded in the transition positioning seat 3, is also threaded in the base 1 through the reference hole of the rotor hub 2, which ensures the integrity and stability of the entire tooling structure when subjected to large pressure during press fitting.

[0034] The bottom surface of the mounting frame 5 is equipped with a combined pressure head 501, and the mounting frame 5 is connected to the output shaft of the hydraulic press. During operation, the hydraulic press drives the mounting frame 5 to move the combined pressure head 501 downward. The combined pressure head 501 is conveniently connected to the mounting frame 5 through threaded bolts 502, which facilitates tooling maintenance, upkeep, and replacement of the combined pressure head 501 when pressing different specifications of iron cores.

[0035] During the pressing operation, the combined pressing head 501 first presses a first iron core body 4 onto the rotor hub 2, positioning it at the top surface of the lower end plate 7. Then, the second iron core body 6 and the first iron core body 4 are pressed in one by one. Before pressing, the second iron core body 6 and the first iron core body 4 need to be heated to 125 degrees Celsius. Utilizing the principle of thermal expansion and contraction, the iron core expands at this temperature, making it easier to press into the rotor hub 2. Furthermore, the rotor hub 2 does not require freezing, simplifying the manufacturing process and reducing costs.

[0036] The limiting block 503 on the inner wall of the combined pressure head 501 limits the pressure during the pressing process through the notch 303 on the transition positioning seat 3, thus providing precise guidance for the combined pressure head 501. This ensures that the combined pressure head 501 maintains the correct position and orientation during downward pressing, accurately pressing the first iron core body 4 and the second iron core body 6, and preventing the pressure head from shifting, which could cause incomplete pressing or damage to the iron core. Furthermore, the two second iron core bodies 6 are located at both ends of the two first iron core bodies 4. This layout makes the rotor iron core structure symmetrical and balanced after pressing, which is beneficial for the rotor to maintain stability during rotation, reducing vibration and noise caused by uneven iron core distribution, and improving the operating performance and reliability of the new energy rotor.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A new energy rotor core pressing fixture, comprising a base (1), a rotor hub (2), a first core body (4), a mounting bracket (5), a second core body (6), and a lower end plate (7), wherein the base (1) is provided with the rotor hub (2), and the lower end plate (7) is sleeved on the rotor hub (2), characterized in that: A transition positioning seat (3) is placed on the base (1). Both ends of the transition positioning seat (3) are provided with notches (303). A first iron core body (4) and a second iron core body (6) are sleeved on the rotor hub (2). The mounting bracket (5) is provided with a combined pressure head (501) on its bottom end face.

2. The new energy rotor core pressing fixture according to claim 1, characterized in that: The transition positioning seat (3) is slidably sleeved inside the rotor hub (2), and the inner diameter of the rotor hub (2) is adapted to the size of the transition positioning seat (3).

3. The new energy rotor core pressing fixture according to claim 2, characterized in that: The transition positioning seat (3) has a pin (301) slidably inserted inside, and the pin (301) is slidably inserted into the base (1) through the reference hole of the rotor hub (2).

4. The new energy rotor core pressing fixture according to claim 3, characterized in that: The transition positioning seat (3) is threaded with a screw (302), and the screw (302) is threaded into the base (1) through the reference hole of the rotor hub (2).

5. The new energy rotor core pressing fixture according to claim 1, characterized in that: Two second core bodies (6) are located at both ends of two first core bodies (4).

6. The new energy rotor core pressing fixture according to claim 1, characterized in that: The combined pressure head (501) is threaded with a bolt (502), and the bolt (502) is threaded into the mounting bracket (5).

7. The new energy rotor core pressing fixture according to claim 1, characterized in that: The inner wall of the combined pressure head (501) is provided with a limiting block (503), and the limiting block (503) is limited by the notch (303) on the transition positioning seat (3).

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