A bearing press device for a motor housing

Abstract

The utility model discloses a bearing press -fitting device of motor shell, include: frame, mounting seat, through vertical guide mechanism slidably be located on the frame, the pressure joint post, vertical fixedly be located on the mounting seat and the bottom stretch mounting seat, and its bottom end is equipped with the positioning axle section of inserting bearing inner ring, clamping mechanism, including the elastic clamping piece of being located in the mounting seat, the elastic clamping piece bottom extends to the side of positioning axle section and is equipped with the clamping part, and the clamping part and positioning axle section center axis distance is less than the outer diameter of bearing, makes the clamping part to bearing outer ring exert radial constraint force, release trigger mechanism, including the blocking portion of being located below clamping mechanism movement path, when the mounting seat down to the preset height, the blocking portion triggers clamping mechanism to remove radial constraint, fixed seat, be located in the bottom of frame for fixed motor shell. The utility model has the advantages of: the cooperation of elastic clamping piece and positioning axle section clamps bearing, and the problem of bearing magnetic because of magnetic attraction is eradicated from the source.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing equipment technology, specifically to a bearing press-fitting device for a motor housing. Background Technology

[0002] In motor manufacturing, precisely pressing the bearings into the motor housing is a crucial process, as its assembly quality directly affects the motor's operational stability, lifespan, and efficiency. Among traditional methods of bearing press-fitting in motor housings, magnetic press-fitting is widely used. Magnetic press-fitting uses magnetic force to attract and press the bearing into the motor housing. While this method is relatively simple and can achieve rapid bearing positioning and installation to some extent, it has serious drawbacks. Because the magnetic attraction process causes the bearing to become magnetic, this magnetic bearing easily attracts tiny particles of impurities such as iron filings and metal powder from the surrounding environment during motor operation. These impurities, once inside the bearing, accelerate wear, reduce bearing precision, and consequently affect the overall performance and operational reliability of the motor, shortening its lifespan.

[0003] Furthermore, traditional magnetic press-fitting methods suffer from difficulties in ensuring press-fitting accuracy. Uneven magnetic force can easily cause bearings to shift or tilt during press-fitting, making it impossible to achieve a precise fit between the bearing and the motor housing's mounting holes. This not only increases subsequent adjustment and repair costs but may also cause vibration and noise during motor operation due to assembly errors, reducing product quality and user experience.

[0004] To address the issue of bearing magnetization during magnetic press-fitting, some companies have attempted manual press-fitting. However, this method is inefficient, labor-intensive, and unsuitable for large-scale industrial production. Other non-magnetic press-fitting equipment suffers from limitations in structural design and functionality, failing to effectively and stably clamp and precisely press-fit bearings, thus failing to achieve the desired press-fitting effect. Therefore, there is an urgent need for a new motor housing bearing press-fitting device that can achieve stable clamping and precise press-fitting of bearings without introducing magnetization, thereby improving motor production quality and efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a bearing press-fitting device for motor housings, which solves the problems of magnetic bearings and low press-fitting accuracy caused by traditional magnetic press-fitting, and achieves stable clamping and precise press-fitting of bearings without magnetic interference, thereby improving the quality and efficiency of motor production.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] A bearing press-fitting device for an electric motor housing, comprising:

[0008] frame;

[0009] The mounting base is slidably mounted on the frame via a vertical guide mechanism;

[0010] The crimping post is vertically fixed on the mounting base and extends out of the mounting base at the bottom. Its bottom end is provided with a positioning shaft section for inserting into the inner ring of the bearing.

[0011] The clamping mechanism includes an elastic clamping member disposed on the mounting base. The bottom of the elastic clamping member extends to the side of the positioning shaft section and is provided with a clamping part. The distance between the clamping part and the central axis of the positioning shaft section is less than the outer diameter of the bearing, so that the clamping part applies a radial constraint force to the outer ring of the bearing.

[0012] The release trigger mechanism includes a blocking part located below the movement path of the clamping mechanism; when the mounting base descends to a preset height, the blocking part triggers the clamping mechanism to release the radial constraint;

[0013] A mounting base, located at the bottom of the frame, is used to secure the motor housing.

[0014] In the aforementioned bearing press-fitting device for a motor housing, the clamping mechanism further includes:

[0015] A vertical slide groove is provided on the mounting base and a slider is provided in the slide groove. The elastic clamping member is fixed to the slider. The blocking part restricts the downward movement of the slider, so that when the mounting base continues to move downward, the clamping part and the bearing generate vertical relative displacement, thereby releasing the radial constraint.

[0016] In the bearing press-fitting device for the motor housing described above, a first elastic element is provided between the top of the slider and the groove.

[0017] In the bearing press-fitting device for the motor housing described above, a guide portion extending downward and gradually moving away from the positioning shaft section is provided below the clamping portion. When the mounting base descends to a preset height, the blocking portion presses against the guide portion, forcing the clamping portion to move radially away from the bearing.

[0018] In the bearing press-fitting device for the motor housing described above, the blocking part is a height-adjustable limiting member, which is installed on the frame by a threaded connection.

[0019] In the bearing press-fitting device for the motor housing described above, the vertical guide mechanism includes a slide rail vertically fixed on the frame, and the mounting seat is slidably disposed on the slide rail.

[0020] In the bearing press-fitting device for the motor housing described above, the vertical guide mechanism includes two vertically spaced guide posts, and the mounting seat is slidably sleeved on the guide posts.

[0021] In the bearing press-fitting device for the motor housing described above, a second elastic element sleeved on the guide post is provided between the mounting base and the bottom of the frame.

[0022] In the aforementioned bearing press-fitting device for a motor housing, the fixing seat includes a positioning pin that mates with a positioning hole in the motor housing; and / or, the fixing seat includes a fixing groove that is adapted to the motor housing.

[0023] In the bearing press-fitting device for the motor housing described above, the elastic clamping member is an elastic steel sheet, and the clamping part extends downward and gradually approaches the positioning shaft section.

[0024] Compared with the prior art, the advantages of this utility model are:

[0025] Completely abandoning the traditional magnetic press-fit method, this system applies radial constraint force to the bearing using elastic clamping components. The cooperation between the elastic clamping components and the positioning shaft section holds the bearing in place, preventing it from moving relative to the pressing post. The bearing then moves downwards with the pressing post and is pressed onto the motor housing, fundamentally eliminating the problem of magnetic attraction causing magnetism in the bearing. This avoids issues such as accelerated wear and decreased precision caused by magnetic bearings attracting impurities, significantly improving the stability and lifespan of the motor and effectively overcoming the key defects of traditional technologies.

[0026] A complete bearing press-fitting system is constructed by combining basic structures such as a frame, mounting base, pressing column, clamping mechanism, release triggering mechanism, and fixed base. The vertical guide mechanism ensures stable sliding of the mounting base, the pressing column presses down the bearing, the clamping mechanism stably fixes the bearing, the release triggering mechanism precisely controls the release of the bearing, and the fixed base positions the motor housing. Each component has a clear division of labor and works together to achieve stable clamping and precise press-fitting of the bearing, achieving high efficiency with a simple structure.

[0027] By utilizing the cooperation between the clamping part and the positioning shaft section, the bearing is precisely radially positioned, ensuring that the bearing remains relatively stationary with the pressing column before pressing, thus preventing the bearing from shifting or tilting during the pressing process. At the same time, the fixing seat positions the motor housing. This dual positioning structure improves the fitting accuracy between the bearing and the bearing mounting hole of the motor housing, reduces motor vibration and noise problems caused by assembly errors, and improves the quality of motor products.

[0028] Furthermore, the clamping mechanism also includes: a vertical slide groove on the mounting base and a slider within the slide groove. The elastic clamping member is fixed to the slider. The blocking part restricts the downward movement of the slider, causing a vertical relative displacement between the clamping part and the bearing when the mounting base continues to descend, thus releasing the radial constraint. When the mounting base descends, the blocking part and the slider interact, utilizing the relative movement of the mounting base and the slider to precisely control the vertical relative displacement between the clamping part and the bearing, thereby releasing the radial constraint and achieving precise control over the bearing release process. Compared to other simple clamping and release methods, this structure can more stably and reliably complete the clamping before and the release during bearing press-fitting. Combining the elastic clamping member with the slider makes the application and release of clamping force smoother. Before the bearing is press-fitted, the slider can be finely adjusted in the groove according to the bearing placement to ensure that the clamping part of the elastic clamping member stably applies radial constraint force to the outer ring of the bearing. During the release process, the cooperation between the blocking part and the slider avoids damage to the elastic clamping member caused by uneven force or sudden force, extending the service life of the device. At the same time, it ensures the consistency and accuracy of the release operation during each press-fitting of the bearing, improving the stability and reliability of the entire press-fitting process.

[0029] Furthermore, a first elastic element is provided between the top of the slider and the groove. This first elastic element allows the slider to automatically return to its initial position under the action of elastic restoring force after the constraint on the bearing is released. During the continuous operation of the bearing press-fitting device, no manual intervention is required to reset the slider, ensuring that the clamping mechanism is always ready to perform the next bearing clamping action smoothly. This greatly improves the efficiency and continuity of the press-fitting operation, and reduces the cost and risk of manual operation. During the downward movement of the mounting base, when the blocking part contacts the slider and restricts its downward movement, the first elastic element can absorb and buffer the impact force generated by the relative motion, preventing rigid collisions between the slider and the top of the groove or other components. This effectively reduces component wear, reduces noise generation, extends the service life of the slider, groove, and elastic clamping components, improves the reliability and stability of the entire bearing press-fitting device, and reduces the frequency and cost of equipment maintenance and component replacement.

[0030] Furthermore, a guide portion extending downwards and gradually moving away from the positioning shaft section is provided below the clamping part. When the mounting base descends to a preset height, the blocking part presses against the guide portion, forcing the clamping part to move radially away from the bearing. The presence of the guide portion provides a clear guiding path for the movement of the clamping part, enabling it to stably move away from the bearing in a preset direction when subjected to the force of the blocking part, avoiding unstable phenomena such as shaking and displacement that occur during the release of constraints by the elastic clamping component. This stable release method ensures that the bearing maintains an accurate position and posture throughout the press-fitting process, further improving the assembly accuracy of the bearing and the motor housing mounting hole, reducing the risk of motor failure due to bearing installation deviations, and enhancing the reliability of the entire press-fitting process.

[0031] Furthermore, the blocking part is a height-adjustable limiting component, installed on the frame via a threaded connection. Due to differences in bearing and motor housing combinations, the required bearing release height varies. The height-adjustable blocking part enables precise control of the bearing release timing, ensuring that during the downward movement of the mounting base, the elastic clamping component is triggered at the most appropriate position to release the radial constraint on the bearing, allowing the bearing to be accurately pressed into the target position on the motor housing. This precise control effectively avoids bearing pressing deviations caused by improper release timing, improving the accuracy and quality of bearing pressing.

[0032] Furthermore, the vertical guide mechanism includes a slide rail vertically fixed to the frame, and the mounting seat is slidably disposed on the slide rail. During the bearing press-fitting process, it effectively restricts the horizontal displacement of the mounting seat, ensuring that the pressing pin is always pressed down stably in the vertical direction. This allows the bearing to be accurately pressed into the bearing mounting hole of the motor housing, avoiding problems such as bearing tilting and misalignment caused by mounting seat offset, and greatly improving the accuracy and quality of bearing press-fitting.

[0033] Furthermore, the vertical guide mechanism includes two vertically spaced guide pillars, with the mounting base slidably fitted onto the guide pillars. This double-guide-pillar structure increases the contact area and support range with the mounting base, significantly enhancing the load-bearing capacity of the vertical guide mechanism. Whether pressing heavier bearings or applying significant pressure during the pressing process, this structure can stably bear the load, preventing guide failure or component damage due to insufficient load-bearing capacity. This allows the device to adapt to a wider range of motor production needs and meet efficient operation under various load conditions.

[0034] Furthermore, a second elastic element, sleeved on the guide post, is provided between the mounting base and the bottom of the frame. During the downward pressing of the bearing by the mounting base, the second elastic element can effectively absorb and buffer the impact force generated by the pressing force, preventing rigid collision between the mounting base and the bottom of the frame. This not only protects critical components such as the mounting base and guide post from impact damage, but also reduces the risk of bearing deformation or motor housing damage caused by impact, significantly improving the reliability of the pressing process and product quality.

[0035] Furthermore, the mounting base includes a positioning post that mates with the positioning hole of the motor housing; and / or, the mounting base includes a fixing groove adapted to the motor housing. The combined design of the positioning post and the fixing groove allows the mounting base to adapt to motor housings of different shapes and specifications. For motor housings with positioning holes, the positioning post can be used for fixing; for motor housings without positioning holes or with unsuitable positioning hole positions, fixing can be achieved through the fixing groove. Even if the model of the motor housing changes, only the appropriate fixing method (using a positioning post, fixing groove, or a combination of both) needs to be selected according to the characteristics of the housing, without the need for large-scale modifications to the mounting base. This greatly improves the versatility of the device for different motor products and reduces the cost for enterprises to replace equipment due to product diversification.

[0036] Furthermore, the elastic clamping element is a flexible steel sheet, with the clamping portion extending downwards and gradually approaching the positioning shaft section. The flexible steel sheet possesses good elasticity and strength, enabling it to stably apply radial constraint force to the outer ring of the bearing, and is less prone to elastic fatigue or fracture. This design, limiting the clamping portion to extend downwards and gradually approach the positioning shaft section, allows the elastic clamping element to more precisely conform to the outer ring of the bearing when clamping it, quickly forming an effective radial constraint force, reducing adjustment time after bearing placement, and improving clamping efficiency. Simultaneously, the precise structural design ensures the positional accuracy of the bearing each time it is clamped, ensuring the bearing is stably positioned in the predetermined location before press-fitting, further improving the accuracy of the bearing press-fitting into the motor housing and reducing assembly errors caused by inaccurate bearing positioning. Attached Figure Description

[0037] Figure 1 This is a perspective view of a bearing press-fitting device for an electric motor housing according to the present invention;

[0038] Figure 2 This is a perspective view of the present invention during bearing installation;

[0039] Figure 3 A schematic diagram of the structure for installing the bearing in this utility model;

[0040] Figure 4 This is a schematic diagram of the structure of the present invention when the blocking part triggers the elastic clamping member during bearing installation;

[0041] Figure 5 This is a schematic diagram of the structure of the present invention when the bearing is installed in the motor housing.

[0042] The attached figures are labeled as follows:

[0043] Frame 100, slide rail 110, guide post 120, second elastic element 130;

[0044] Mounting base 200, sliding groove 210;

[0045] 300 crimping post and 310 positioning shaft section;

[0046] Clamping mechanism 400, elastic clamping member 410, clamping part 411, slider 420, first elastic element 430;

[0047] Release trigger mechanism 500 and blocking part 510;

[0048] Fixed base 600, positioning post 610;

[0049] Bearing 700;

[0050] Motor housing 800. Detailed Implementation

[0051] A bearing press-fitting device for an electric motor housing, comprising:

[0052] 100 racks;

[0053] The mounting base 200 is slidably mounted on the frame 100 via a vertical guide mechanism;

[0054] The crimping post 300 is vertically fixed on the mounting base 200 and extends out of the mounting base 200 at the bottom. Its bottom end is provided with a positioning shaft section 310 for inserting into the inner ring of the bearing 700.

[0055] The clamping mechanism 400 includes an elastic clamping member 410 disposed on the mounting base 200. The bottom of the elastic clamping member 410 extends to the side of the positioning shaft section 310 and is provided with a clamping part 411. The distance between the clamping part 411 and the central axis of the positioning shaft section 310 is less than the outer diameter of the bearing 700, so that the clamping part 411 applies a radial constraint force to the outer ring of the bearing 700.

[0056] The release trigger mechanism 500 includes a blocking part 510 located below the movement path of the clamping mechanism 400; when the mounting base 200 descends to a preset height, the blocking part 510 triggers the clamping mechanism 400 to release the radial constraint.

[0057] A mounting base 600 is located at the bottom of the frame 100 and is used to fix the motor housing 800.

[0058] The traditional magnetic press-fit method is completely abandoned. Instead, a radial constraint force is applied to the bearing 700 using an elastic clamping element 410, fundamentally eliminating the problem of magnetism in the bearing 700 caused by magnetic attraction. This avoids problems such as accelerated wear and decreased precision caused by impurities adsorbed by the magnetic bearing 700, significantly improving the stability and service life of the motor and effectively overcoming the key defects of traditional technology.

[0059] A complete bearing 700 press-fitting system is constructed by combining basic structures such as frame 100, mounting base 200, pressing column 300, clamping mechanism 400, release triggering mechanism 500, and fixed base 600. The vertical guide mechanism ensures stable sliding of the mounting base 200, the pressing column 300 presses down the bearing 700, the clamping mechanism 400 stably fixes the bearing 700, the release triggering mechanism 500 precisely controls the release of the bearing 700, and the fixed base 600 positions the motor housing 800. Each component has a clear function and works together to achieve stable clamping and precise press-fitting of the bearing 700, achieving high efficiency with a simple structure.

[0060] By utilizing the cooperation between the clamping part 411 and the positioning shaft section 310, the bearing 700 is precisely radially positioned, ensuring that the bearing 700 remains relatively stationary with the pressing column 300 before pressing, thus preventing the bearing 700 from shifting or tilting during the pressing process. At the same time, the fixing seat 600 positions the motor housing 800. This dual positioning structure improves the fitting accuracy between the bearing 700 and the mounting holes of the bearing 700 and the motor housing 800, reducing motor vibration and noise problems caused by assembly errors, and improving the quality of the motor product.

[0061] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0062] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] See Figures 1 to 5 This invention relates to an embodiment of a bearing press-fitting device for a motor housing. The device includes a frame 100, a mounting base 200, a pressing post 300, a clamping mechanism 400, a release triggering mechanism 500, and a fixing base 600. The frame 100 provides stability and support for the entire device. A vertical guide mechanism is installed on the frame 100, allowing the mounting base 200 to slide vertically with the assistance of the vertical guide mechanism.

[0066] A pressing post 300 is fixed on the mounting base 200. The pressing post 300 is vertically positioned, with its bottom extending downwards from the mounting base 200. A positioning shaft section 310 for inserting into the inner ring of the bearing 700 is located at the bottom of the pressing post 300. The pressing post 300 primarily functions to press the bearing 700 into the motor housing 800. Therefore, the diameter of the pressing post 300 needs to be designed according to the dimensions of the motor housing 800 and the bearing 700 to ensure that the bearing 700 is securely pressed into the motor housing 800. The bottom end of the pressing post 300 is flat, ensuring smooth contact with the bearing 700 and preventing the bearing 700 from deflecting during pressing. The positioning shaft section 310, inserted into the inner ring of the bearing 700, also positions the bearing 700 and needs to cooperate with the clamping mechanism to ensure that the bearing 700 descends along with the pressing post 300 before pressing.

[0067] The clamping mechanism 400 includes an elastic clamping member 410 disposed on the mounting base 200. The bottom of the elastic clamping member 410 extends to the side of the positioning shaft section 310 and is provided with a clamping part 411. The distance between the clamping part 411 and the central axis of the positioning shaft section 310 is less than the outer diameter of the bearing 700. After the bearing 700 is sleeved on the positioning shaft section 310, the elastic clamping member 410 will undergo elastic deformation. The clamping part 411 abuts against the outer ring of the bearing 700 and applies a radial constraint force to the outer ring of the bearing 700. This constraint force will increase the friction between the bearing 700 and the clamping part 411 and the positioning shaft section 310, thereby ensuring that the bearing 700 remains stationary relative to the pressing post 300 after being sleeved on the positioning shaft section 310.

[0068] The release trigger mechanism 500 is mainly used to engage the radial constraint on the bearing 700 when the bearing 700 is about to enter the motor housing 800, ensuring that the clamping mechanism 400 does not interfere with the bearing 700 pressing against the motor housing 800. The release trigger mechanism 500 includes a blocking part 510 located below the movement path of the clamping mechanism 400. When the mounting base 200 descends to a preset height, the blocking part 510 triggers the clamping mechanism to release the radial constraint. For example, it causes the clamping mechanism 400 to move vertically relative to the bearing 700, thus preventing the clamping mechanism 400 from descending with the bearing 700, thereby disengaging the elastic clamping member 410 from the bearing 700 and releasing the radial constraint; or the blocking part 510 causes the clamping part 411 to displace away from the bearing 700, thus releasing the radial constraint.

[0069] A fixing seat 600 is also provided on the frame 100 below the crimping column 300. The fixing seat 600 is used to fix the motor housing 800 to ensure that the motor housing 800 will not deflect or shake during crimping, thus ensuring stable crimping quality.

[0070] Based on the above embodiments, to achieve the function that the clamping mechanism 400 can release the bearing 700 when the bearing 700 is ready to be pressed into the motor housing 800, the clamping mechanism 400 and the release triggering mechanism 500 include, but are not limited to, the following structures:

[0071] 1. The clamping mechanism 400 also includes a vertical slide groove 210 provided in the mounting base 200 and a slider 420 provided in the slide groove 210. The elastic clamping member 410 is fixedly connected to the slider 420, and the pressing post 300 is fixedly installed on the mounting base 200. That is, when the elastic clamping member 410 is subjected to an external force in the vertical direction, the slider 420 can slide in the slide groove 210, thereby causing the clamping part 411 to generate a relative displacement in the vertical direction relative to the bearing 700 and releasing the radial constraint.

[0072] Furthermore, a first elastic element 430 is provided between the top of the slider 420 and the slide groove 210. The first elastic element 430 can be a spring or a sheet. The provision of the first elastic element 430 allows the slider 420 to automatically return to its initial position under the action of elastic restoring force after the constraint on the bearing 700 is released. During the continuous operation of the bearing 700 pressing device, there is no need for manual intervention to reset the slider 420, ensuring that the clamping mechanism 400 is always ready to perform the next clamping action of the bearing 700 smoothly, greatly improving the efficiency and continuity of the pressing operation, and reducing the cost and risk of error of manual operation. During the downward movement of the mounting base 200, when the blocking part 510 contacts the slider 420 and restricts its downward movement, the first elastic element 430 can absorb and buffer the impact force generated by the relative motion, avoiding rigid collisions between the slider 420 and the top of the slide groove 210 or other components. This effectively reduces component wear, lowers noise generation, extends the service life of related components such as slider 420, slide 210, and elastic clamping member 410, improves the reliability and stability of the entire bearing 700 press-fitting device, and reduces the frequency and cost of equipment maintenance and component replacement.

[0073] Second, a guide portion extending downwards and gradually moving away from the positioning shaft section 310 is provided below the clamping part 411. When the mounting base 200 descends to a preset height, the blocking part 510 presses against the guide portion, forcing the clamping part 411 to move radially away from the bearing 700, thereby releasing the radial constraint of the clamping part 411 on the bearing 700. The presence of the guide portion provides a clear guiding path for the movement of the clamping part 411, enabling the clamping part 411 to stably move away from the bearing 700 in a preset direction when subjected to the force of the blocking part 510, avoiding unstable phenomena such as shaking and displacement of the elastic clamping part 410 during the constraint release process. This stable release method ensures that the bearing 700 maintains an accurate position and posture throughout the press-fit process, further improving the assembly accuracy of the bearing 700 and the mounting hole of the motor housing 800, reducing the risk of motor failure caused by bearing 700 installation deviation, and enhancing the reliability of the entire press-fit process.

[0074] The blocking part 510 of the release trigger mechanism 500, which cooperates with the aforementioned clamping mechanism 400, can be the motor housing 800. That is, after the mounting base 200 descends to a certain height, the elastic clamping member 410 contacts the motor housing 800. As the mounting base 200 continues to descend, under the action of the motor housing 800, the clamping part 411 generates a relative displacement in the vertical direction or along the radial direction of the bearing 700, causing the clamping part 411 to disengage from the radial constraint of the bearing 700. Similarly, the blocking part 510 can also be the frame 100. In this embodiment, the blocking part 510 is a height-adjustable limiting member, which is installed on the frame 100 via a threaded connection. The operator can conveniently adjust the height of the blocking part 510 according to different specifications of the bearing 700, the motor housing 800, and the specific pressing process requirements. Whether replacing different models of bearings 700 or adjusting the pressing force and position, all can be achieved through a simple threaded rotation operation, without the need for complex disassembly and modification of the device, greatly improving the adaptability of the device to diverse production needs. Since different combinations of bearings 700 and motor housing 800 result in varying requirements for the release height of bearing 700, the height-adjustable stop 510 enables precise control of the bearing 700 release timing. This ensures that during the descent of the mounting base 200, the elastic clamping member 410 is triggered at the most appropriate position to release the radial constraint on the bearing 700, allowing the bearing 700 to be accurately pressed into the target position on the motor housing 800. This precise control effectively avoids bearing 700 pressing deviations caused by improper release timing, improving the accuracy and quality of bearing 700 pressing.

[0075] Based on the above embodiments, the elastic clamping member 410 can be made of elastic steel sheet. Elastic steel sheet has good elasticity and strength, and can stably apply radial constraint force to the outer ring of the bearing 700, making it less prone to elastic fatigue or breakage. The clamping portion 411 extends downwards and gradually approaches the positioning shaft section 310. This structural design allows the elastic clamping member 410 to more accurately fit against the outer ring of the bearing 700 when clamping the bearing 700, quickly forming an effective radial constraint force, reducing the adjustment time after the bearing 700 is placed, and improving clamping efficiency. At the same time, the precise structural design ensures the positional accuracy of the bearing 700 each time it is clamped, ensuring that the bearing 700 is stably in the predetermined position before press-fitting, further improving the accuracy of pressing the bearing 700 into the motor housing 800, and reducing assembly errors caused by inaccurate positioning of the bearing 700. In the first clamping mechanism 400 structure, the elastic steel sheet can be fixedly connected to the slider 420 by bolts or other means; in the second clamping mechanism 400 structure, the clamping part 411 can be fixedly connected to the mounting base 200 by bolts or other means.

[0076] In this embodiment, the vertical guide mechanism can adopt a slide rail 110 vertically fixed on the frame 100, with a slider 420 on the mounting base 200 that cooperates with the slide rail 110, or the mounting base 200 and the slider 420 can be integrally set to ensure that the mounting base 200 slides smoothly and steadily in the vertical direction. By using a slide rail 110 vertically fixed on the frame 100, the mounting base 200 slides in cooperation with the slide rail 110 through a specific structure, and the slide rail 110 provides precise guidance for the movement of the mounting base 200. During the pressing process of the bearing 700, it can effectively limit the horizontal displacement of the mounting base 200, ensuring that the pressing column 300 is always pressed down stably in the vertical direction, so that the bearing 700 can be accurately pressed into the bearing mounting hole of the motor housing, avoiding problems such as tilting and misalignment of the bearing 700 caused by the offset of the mounting base 200, and greatly improving the accuracy and quality of the bearing 700 pressing. The slide rail 110 has a relatively simple structure, occupies less space, and has a high degree of integration with the frame 100. Compared with other complex guide structures, using the slide rail 110 as a vertical guide mechanism makes the entire bearing 700 press-fitting device more compact. In the limited space of the production workshop, equipment can be arranged more flexibly, the production line layout can be optimized, and the space utilization rate can be improved. At the same time, it is also convenient for the installation and handling of equipment.

[0077] The vertical guiding mechanism can also consist of two vertically spaced guide posts 120 fixed to the frame 100, with the mounting base 200 slidably fitted onto the guide posts 120. For example, a vertical sliding hole can be formed on the mounting base 200, and a sliding sleeve can be installed in the sliding hole to cooperate with the guide post 120, thereby enabling the mounting base 200 to slide vertically along the guide post 120. The two vertically spaced guide posts 120 form a stable support structure, which can provide more balanced force support for the mounting base 200 compared to a single guide post 120 or other guiding methods. During the press-fitting process, it effectively resists interference such as lateral forces and off-center loads generated during the press-fitting of the bearing 700, preventing the mounting base 200 from shaking or tilting, and ensuring that the pressing post 300 always remains in a vertical downward pressing state. This ensures that the bearing 700 can be accurately and stably pressed into the motor housing 800, significantly improving the reliability of the bearing 700 press-fitting and the product qualification rate. The double guide column 120 structure increases the contact area and support range with the mounting base 200, significantly improving the load-bearing capacity of the vertical guide mechanism. Whether pressing a heavier bearing 700 or applying greater pressure during the pressing process, this structure can stably bear the load, avoiding guide failure or component damage due to insufficient load-bearing capacity. This allows the device to adapt to a wider range of motor production needs and meet efficient operation under different load conditions.

[0078] Of course, in this embodiment, the vertical guide mechanism will employ both a slide rail 110 and guide posts 120. The slide rail 110 and the two guide posts 120 are arranged in a triangular pattern. The slide rail 110, through the cooperation of the slider 420 and the guide rail, can provide a low-friction, high-straightness motion trajectory, which is particularly suitable for bearing the horizontal component force and reducing lateral offset during vertical movement. The slide rail 110 is typically designed to withstand large axial (vertical) loads and some radial loads, making it suitable for supporting the weight of components such as the mounting base 200 and the pressing head, as well as the vertical pressure generated during pressing. When there is an off-center load during pressing (such as the lateral force caused by the positioning error of the motor housing 800), the double guide posts 120 can distribute the load through rigid support, preventing the slide rail 110 from experiencing accelerated wear due to excessive force on one side. At the same time, the rigid structure of the guide posts 120 can buffer instantaneous impacts (such as collisions when pressing into place), protecting the slide rail 110 assembly and extending its overall lifespan.

[0079] When using the guide post 120 structure, a second elastic element 130 can be fitted onto the guide post 120. The second elastic element 130 is located between the mounting base 200 and the bottom of the frame 100. Generally, the second elastic element 130 is a spring. During the downward pressing of the mounting base 200 to install the bearing 700, the second elastic element 130 can effectively absorb and buffer the impact force generated by the pressing force, avoiding rigid collision between the mounting base 200 and the bottom of the frame 100. This not only protects key components such as the mounting base 200 and guide post 120 from impact damage, but also reduces the risk of bearing 700 deformation or motor housing 800 damage caused by impact, significantly improving the reliability of the pressing process and product quality. The elastic characteristics of the second elastic element 130 allow it to deform accordingly according to changes in the pressing force, thereby providing precise feedback and control for the pressing process. When the bearing 700 is pressed to the preset depth, the reaction force of the elastic element gradually increases, forming a balance with the pressing force, effectively preventing overpressure and ensuring the consistency and accuracy of the pressing depth of the bearing 700, thereby improving the precision and stability of motor assembly.

[0080] Based on the above embodiments, the fixing base 600 includes a positioning post 610 that mates with the positioning hole of the motor housing 800. The positioning post 610 mates with the positioning hole of the motor housing 800 to achieve precise positioning and ensure that the motor housing 800 does not shift in the horizontal direction. Alternatively, the fixing base 600 includes a fixing groove adapted to the shape of the motor housing 800, which can restrict the motor housing 800 in the vertical direction and at other angles. Of course, the positioning post 610 and the fixing groove can also be used simultaneously, forming multiple fixing methods. Compared with a single fixing structure, this can more firmly fix the motor housing 800 to the bottom of the frame 100, effectively preventing the motor housing 800 from shaking or shifting during the pressing of the bearing 700, ensuring the accuracy of the bearing 700 pressing position, improving pressing precision and the overall assembly quality of the motor.

[0081] During installation, such as Figure 3 As shown, first, the motor housing 800 is fixed on the mounting base 600. Then, the bearing 700 to be installed is fitted onto the positioning shaft section 310. The clamping part 411 of the elastic clamping member 410 abuts against the outer ring of the bearing 700, increasing the friction between the bearing 700 and the positioning shaft section 310 and the clamping part 411. The clamping part 411 and the positioning shaft section 310 form a "clamp" to hold the bearing 700, keeping the bearing 700 in a relatively stationary state relative to the pressing post 300. Figure 4 As shown, the mounting base 200 is moved downwards along the vertical guide mechanism by a power device or manual drive. When it descends to a preset height, that is, when the bearing 700 is about to enter the bearing mounting hole of the motor housing, the blocking part 510 triggers the clamping mechanism 400. For example, in this embodiment, the blocking part 510 abuts against the slider 420, preventing the slider 420 from moving downwards. The mounting base 200, along with the pressing post 300 and the bearing 700, continues to move downwards. The clamping part 411 gradually disengages from the bearing 700, and the clamping part 411 will no longer obstruct the bearing 700 from entering the mounting hole. Since the bearing 700 is already ready to enter the mounting hole, it can smoothly enter the mounting hole without radial constraint. Figure 5As shown, the mounting base 200 continues to move downwards with the pressing post 300. The lower end of the mounting post is fixed on the top surface of the bearing 700, pressing the bearing 700 into the motor housing 800, completing the pressing of the bearing 700. The clamping part 411 and the positioning shaft section 310 cooperate to precisely radially position the bearing 700, ensuring that the bearing 700 remains relatively stationary with the pressing post 300 before pressing, preventing the bearing 700 from shifting or tilting during the pressing process. Simultaneously, the fixing base 600 positions the motor housing 800. This dual-positioning structure improves the fitting accuracy between the bearing 700 and the mounting hole of the bearing 700 in the motor housing 800, reducing motor vibration and noise problems caused by assembly errors. This achieves stable clamping and precise pressing of the bearing 700 under non-magnetic interference, improving motor production quality and efficiency.

[0082] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A bearing press device for an electric machine housing, comprising a frame, characterized in that: Also includes: The mounting base is slidably mounted on the frame via a vertical guide mechanism; The crimping post is vertically fixed on the mounting base and extends out of the mounting base at the bottom. Its bottom end is provided with a positioning shaft section for inserting into the inner ring of the bearing. The clamping mechanism includes an elastic clamping member disposed on the mounting base. The bottom of the elastic clamping member extends to the side of the positioning shaft section and is provided with a clamping part. The distance between the clamping part and the central axis of the positioning shaft section is less than the outer diameter of the bearing, so that the clamping part applies a radial constraint force to the outer ring of the bearing. The release trigger mechanism includes a blocking part located below the movement path of the clamping mechanism; when the mounting base descends to a preset height, the blocking part triggers the clamping mechanism to release the radial constraint; A mounting base, located at the bottom of the frame, is used to secure the motor housing.

2. A bearing press fitting device for a motor housing according to claim 1, wherein The clamping mechanism further includes: A vertical slide groove is provided on the mounting base and a slider is provided in the slide groove. The elastic clamping member is fixed to the slider. The blocking part restricts the downward movement of the slider, so that when the mounting base continues to move downward, the clamping part and the bearing generate vertical relative displacement, thereby releasing the radial constraint.

3. A bearing press fitting device for an electric machine housing according to claim 2, wherein A first elastic element is provided between the top of the slider and the groove.

4. A bearing press fitting device for a motor housing according to claim 1, wherein The elastic clamping member is an elastic steel sheet, and the clamping part extends downward and gradually approaches the positioning shaft section.

5. A bearing presser device for a motor housing as set forth in claim 1, characterized by Below the clamping part is a guide part that extends downward and gradually moves away from the positioning shaft section. When the mounting base descends to a preset height, the blocking part presses against the guide part, forcing the clamping part to move radially away from the bearing.

6. A bearing press fitting device for a motor housing according to any one of claims 1 to 5, wherein The blocking part is a height-adjustable limiting component, which is installed on the frame via a threaded connection.

7. A bearing presser device for a motor housing as set forth in claim 1, characterized by The vertical guide mechanism includes a slide rail that is vertically fixed to the frame, and the mounting base is slidably disposed on the slide rail.

8. A bearing press fitting device for a motor housing according to claim 1 or 7, wherein The vertical guide mechanism includes two vertically spaced guide posts, and the mounting base is slidably sleeved on the guide posts.

9. A bearing press fitting device for a motor housing as set forth in claim 8, characterized by A second elastic element is provided between the mounting base and the bottom of the frame, and is sleeved on the guide post.

10. A bearing press device for an electric machine housing as defined in claim 1, wherein, The mounting base includes a positioning post that mates with a positioning hole in the motor housing; and / or, the mounting base includes a mounting groove that is adapted to the motor housing.

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