Motor stator double-sided bearing mounting device
The fully automated press-fitting of double-sided bearing installation equipment for motor stators solves the problems of low efficiency and low precision in traditional motor stator bearing assembly, achieving high-precision and high-speed bearing assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING CHERVON IND
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-24
Smart Images
Figure CN224555434U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of motor assembly technology, and more particularly to an installation device for double-sided bearings of a motor stator. Background Technology
[0002] As the core device for converting electrical energy into mechanical energy, electric motors are widely used in industrial automation, home appliances, new energy vehicles, and other fields. With the increasing demand for electric motors, improving production efficiency, reducing manufacturing costs, and ensuring product quality have become key issues in electric motor production.
[0003] Traditional motor stator bearing assembly often employs manual step-by-step pressing or single-sided automated equipment, which has the following drawbacks: low efficiency of manual operation; difficulty in ensuring bearing coaxiality; existing single-sided pressing equipment requires secondary positioning, and accumulated errors lead to misalignment of bearings on both sides; lack of real-time feedback on pressure and displacement during the pressing process, which can easily cause damage to the bearings or stator.
[0004] To improve production efficiency, reduce reliance on manual labor, and enhance assembly precision, it is urgent to optimize existing assembly processes, improve the consistency and reliability of motor stator bearing assembly, and meet the high-efficiency and high-precision requirements of modern motor production.
[0005] This section provides background information related to this application, which is not necessarily prior art. Utility Model Content
[0006] To address the shortcomings of existing technologies, the purpose of this application is to provide a motor stator double-sided bearing mounting device capable of press-fitting both sides of the stator assembly.
[0007] To achieve the above objectives, this application adopts the following technical solution:
[0008] A motor stator double-sided bearing mounting device includes: a first bearing assembly area configured to assemble a first bearing onto one side of a stator assembly; and a second bearing assembly area configured to assemble a second bearing onto the other side of the stator assembly on which the first bearing is mounted. The first bearing assembly area includes a first stator transport assembly and a first bearing transport assembly, wherein the first stator transport assembly transports the stator assembly to the first bearing assembly position and transports the first bearing to a position directly above the stator assembly. The second bearing assembly area includes a second stator transport assembly and a second bearing transport assembly, wherein the second stator transport assembly on which the first bearing is mounted transports to the second bearing assembly position and transports the second bearing to a position directly below the stator assembly on which the first bearing is mounted. The motor stator double-sided bearing mounting device further includes a bearing pressing assembly, which presses the first bearing onto the stator assembly and presses the stator assembly on which the first bearing is mounted onto the second bearing.
[0009] In one embodiment, the first stator transport assembly includes a first feed port for receiving stator assemblies and a first stator transport channel for transporting stator assemblies to a first bearing assembly position.
[0010] In one embodiment, the first bearing transport assembly includes a first slinger, a first gripper, and a first bearing transport channel, wherein the first bearing is slinged out from the first slinger and fixed by the first gripper and transported along the first bearing transport channel to the top of the stator assembly.
[0011] In one embodiment, the second stator transfer assembly includes a transfer gripper that receives a stator assembly with a first bearing mounted from a bearing press assembly, the transfer gripper clamping and transporting the stator assembly with the first and second bearings mounted to a discharge terminal.
[0012] In one embodiment, the second bearing transport assembly includes a second slinger, a second gripper, and a second bearing transport channel. The second bearing is slinged out from the second slinger and fixed by the second gripper, and transported along the second bearing transport channel to below the stator assembly on which the first bearing is mounted.
[0013] In one embodiment, the first bearing is the front bearing of the stator assembly, and the second bearing is the rear bearing of the stator assembly.
[0014] In one embodiment, when the bearing press-fit assembly presses the first bearing, the bearing press-fit assembly contacts the stator assembly; when the bearing press-fit assembly presses the second bearing, the bearing press-fit assembly contacts the second bearing.
[0015] In one embodiment, the bearing press assembly is a servo press, including a press plate and a servo mechanism. The servo mechanism includes a servo motor, a pressure sensor, and a control component. The servo mechanism drives the press plate to rise or fall, and the pressure sensor feeds back the detected pressure information to the control component to determine whether the first bearing or the second bearing is correctly press-fitted to the stator assembly.
[0016] In one embodiment, when the press plate presses the first bearing, the press plate contacts one end of the stator assembly, and the stator is located between the press plate and the first bearing; when the press plate presses the second bearing, the press plate contacts the second bearing, and the second bearing is located between the press plate and the stator assembly on which the first bearing is pressed.
[0017] In one embodiment, the second bearing assembly area is configured to assemble two second bearings onto the stator assembly.
[0018] The advantages of this application are as follows: both the front and rear bearings of the stator assembly are discharged via a slinger; the front and rear bearing mounting areas share a single press-fit assembly. When the press-fit assembly presses the front bearing, it contacts the stator end, with the stator positioned between the press-fit assembly and the front bearing. When the press-fit assembly presses the rear bearing, it contacts the rear bearing, with the front bearing positioned between the press-fit assembly and the stator. This solution achieves fully automated press-fitting with high precision and accuracy. Furthermore, the shared press-fit assembly for both bearings maximizes space and time utilization, resulting in a high degree of automation and high press-fitting precision. The vertical press-fitting direction avoids the precision errors caused by horizontal press-fitting. Attached Figure Description
[0019] Figure 1 This is an exploded view of the stator assembly, the first bearing, and the second bearing;
[0020] Figure 2 This is a schematic diagram of the structure of the motor stator double-sided bearing mounting device of this application;
[0021] Figure 3 yes Figure 2 A schematic diagram of the workbench of the motor stator double-sided bearing mounting equipment;
[0022] Figure 4 yes Figure 3 Top view of the middle workbench;
[0023] Figure 5 This is a schematic diagram of the first bearing assembly position, the second bearing assembly position, and the press-fit position;
[0024] Figure 6 This is a schematic diagram of a portion of the structure of the first bearing assembly area;
[0025] Figure 7 This is also a schematic diagram of part of the structure of the first bearing assembly area;
[0026] Figure 8 This is a schematic diagram of part of the structure of the second bearing assembly area;
[0027] Figure 9 This is a schematic diagram of a portion of the structure of the first bearing assembly area;
[0028] Figure 10 This is a schematic diagram of the transfer gripper. Detailed Implementation
[0029] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.
[0030] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0031] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.
[0032] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.
[0033] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are inclusive of values and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values not using relative terms should also be disclosed as specific values with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.
[0034] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.
[0035] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.
[0036] Figure 1 This is a schematic diagram of the stator assembly 1 of the motor. At least one bearing is mounted on each of the front and rear sides of the stator assembly 1, namely a first bearing 2 located on the front side of the stator assembly 1 and a second bearing 3 located on the rear side of the stator assembly 1. In some motors, multiple bearings may be mounted on the front or rear side of the stator assembly 1. For example, in one assembly method, one first bearing 2 is press-fitted onto the front side of the stator assembly 1, and two second bearings 3 are press-fitted onto the rear side of the stator assembly 1. In another assembly method, two first bearings 2 are press-fitted onto the front side of the stator assembly 1, and one second bearing 3 is press-fitted onto the rear side of the stator assembly 1. It should be noted that the two or more bearings located on the same side can be identical or different.
[0037] Figure 2 A double-sided bearing mounting device 10 for a motor stator is shown. Before the stator assembly 1 enters the double-sided bearing mounting device 10, the stator wires are welded and the thermoplastic tubes are heated in the previous process. The qualified stator assembly 1 is then collected and enters this device. The double-sided bearing mounting device 10 is divided into two parts: an upper worktable 20 and a lower support frame 30. Rollers 40 are installed below the support frame.
[0038] Figure 3 The workbench 20 of the motor stator double-sided bearing mounting device 10 is shown. Figure 4 This is a top view of workbench 20. (Example) Figures 3 to 4 As shown, the double-sided bearing mounting device 10 includes a first bearing assembly area 100 and a second bearing assembly area 200. The first bearing assembly area 100 is configured to assemble a first bearing 2 onto one side of the stator assembly 1, and the second bearing assembly area 200 is configured to assemble a second bearing 3 onto the other side of the stator assembly 1 on which the first bearing 2 is mounted. The motor stator double-sided bearing mounting device 10 also includes a bearing press-fit assembly 300, which performs the press-fitting operation of the first bearing 2, the second bearing 3, and the stator assembly 1.
[0039] like Figure 4As shown, the first bearing assembly area 100 includes a first stator transfer assembly 110 and a first bearing transfer assembly 120. The first stator transfer assembly 110 transports the stator assembly 1 to the first bearing assembly position 101, and the first bearing transfer assembly 120 transports the first bearing 2 to a position directly above the stator assembly 1. The first stator transfer assembly 110 includes a first feed port 111 for receiving the stator assembly 1 and a first stator conveying channel 112.
[0040] Combination Figure 3 , Figure 4 and Figure 6 As shown, the first feed inlet 111 is mechanically connected to the first stator conveying channel 112. The stator assembly 1 can be placed on the first feed inlet 111 manually or by other mechanical means, with the front end of the stator assembly 1 facing upwards to press and fit against the first bearing 2. The first stator conveying channel 112 is a track extending in the front-to-back direction. One end of the first stator conveying channel 112 is connected to the first feed inlet 111, and the other end is connected to the first transfer mechanism 113. The first feed inlet 111 transports the stator assembly 1 backwards on the first stator conveying channel 112 to the first transfer mechanism 113, which then transfers the stator assembly 1 to the bearing pressing assembly 300 for the pressing process.
[0041] like Figure 7 As shown, while the stator assembly 1 is being transported, the first bearing transfer assembly 120 also transports the first bearing. The first bearing transfer assembly 120 includes a first slinger 121, a first gripper 122, and a first bearing transport channel 123. The first bearing 2 is automatically separated and transported to the first slinger outlet by the rotational motion of the first slinger 121. After reaching the first slinger outlet, the first gripper 122 picks up the first bearing 2 and transports it along the first bearing transport channel 123 extending in the front-rear direction to above the stator assembly 1, and precisely aligns the central axis of the first bearing 2 with the central axis of the stator assembly 1, so that it can be transported to the bearing pressing assembly 300 for the next pressing step.
[0042] Figure 3 , Figure 4 and Figure 8 Partial components of the second bearing assembly area 200 are shown. The second bearing assembly area 200 includes a second stator transport assembly 210 and a second bearing transport assembly 220. The second stator transport assembly 210 transports the stator assembly 1, on which the first bearing 2 is mounted, to the second bearing assembly position 201 (see Figure 220). Figure 3 and Figure 5 The second bearing transmission assembly 220 transports the second bearing 3 directly below the stator assembly 1 on which the first bearing 2 is mounted, so that the second bearing 3 is in a state that can be pressed under the stator assembly 1 on which the first bearing 2 is mounted.
[0043] like Figure 8 As shown, the second bearing transmission assembly 220 includes a second slinger 221, a second gripper 222, and a second bearing conveying channel 223. The second bearing 3 is slinged out from the discharge port 224 of the second slinger 221 and fixed by the second gripper 222 and transported along the second bearing conveying channel 223 to the area below the stator assembly 1 on which the first bearing 2 is installed.
[0044] like Figure 9 As shown, the bearing press assembly 300 is a servo press, including a press plate 310 and a servo mechanism 320. The servo mechanism 320 includes a servo motor, a pressure sensor, and a control component. The servo mechanism 320 drives the press plate 310 to rise or fall, and the pressure sensor feeds back the detected pressure information to the control component to determine whether the first bearing 2 or the second bearing 3 is correctly press-fitted with the stator assembly 1. The servo press is a high-precision intelligent pressure device that achieves closed-loop control of pressure, speed, and position through real-time feedback from sensors and the control system. Compared to traditional hydraulic / mechanical presses, it is more suitable for precision assembly, stamping, and other similar applications.
[0045] Figure 5 A simplified diagram showing the positional changes of stator assembly 1 during bearing installation is provided. The bearing press-fit assembly 300 includes four supports, with the four right angles of the press-fit plate 310 respectively mounted on each support. Specifically, a transfer track 400 is internally mounted within the bearing press-fit assembly 300, with one end connected to the first bearing assembly area 100 and the other end connected to the second bearing assembly area 200. Specifically, the transfer track 400 connects the first bearing assembly position 101 and the second bearing assembly position 201, with the press-fit position 301 located between the first bearing assembly position 101 and the second bearing assembly position 201. A rotatable transfer component is provided on the transfer track 400. After the stator assembly 1 is fitted onto the first bearing 1 at the first bearing assembly position 101, it is moved to the press-fit position 301. When the stacked first bearing 2 and stator assembly 1 reach the pressing position 301 inside the bearing pressing assembly 300, the pressing plate 310 moves downward under the drive of the servo mechanism 320, correctly pressing the first bearing 2 and stator assembly 1. After the pressing of the first bearing 2 is completed, the pressing plate 310 is lifted and released.
[0046] The bearing press-fit assembly 300 also includes a lifting assembly 330, which comprises a lifting cylinder 331, a lifting plate 332, a fixing block 333, and lifting grippers 334. The lifting plate 332 is an elongated structure, with one end mounted on a bracket and the other end passing through another bracket. The lifting cylinder 331 provides power to the lifting plate 332, and the lifting block 333 is mounted on the lifting plate 332, pressing the lifting grippers 334 onto the lifting plate 332. When the press-fit plate 310 presses and releases the first bearing 2, the lifting assembly 330 lifts upward, and the lifting grippers 334 hold the stator assembly 1, which holds the first bearing 2, and rise together with it.
[0047] Immediately thereafter, the second bearing 3, held by the second gripper 222, has been transported along the second bearing conveying channel 223 to the second bearing assembly position 201 and is awaiting the arrival of the stator assembly 1 with the first bearing 2. When the stator assembly 1 with the first bearing 2, located at the pressing position 301, moves to the left along the transfer track 400 to the second bearing assembly position 201, the second bearing 3 is already positioned below it. After the second bearing 3 is fitted under the stator assembly 1 with the first bearing 2, the transfer track 400 moves the entire assembly from the second bearing assembly position 201 back to the pressing position 301. The pressing plate 310 descends, repeating the above pressing process to press the second bearing 3 firmly onto the stator assembly 1 with the first bearing 2.
[0048] like Figure 5 and Figure 10 As shown, the second stator transfer assembly 210 includes a transfer gripper 211 that receives the stator assembly with the first bearing installed from the bearing press-fit assembly 300. After all the bearings on the front and back sides of the stator assembly 1 are press-fitted, the stator assembly on the transfer track 400 is moved to the left back to the second bearing assembly position 201, and the transfer gripper 211 clamps and transports the stator assembly 1 with the first bearing 2 installed to the discharge terminal.
[0049] The motor stator double-sided bearing mounting device 10 disclosed in this application has a first bearing 2 as the front bearing of the stator assembly 1 and a second bearing 3 as the rear bearing of the stator assembly 1. When the bearing pressing assembly 300 presses the first bearing 2, the bearing pressing assembly 300 contacts the stator assembly 1; when the bearing pressing assembly 300 presses the second bearing 3, the bearing pressing assembly 300 contacts the second bearing 3. In other words, when the pressing plate 310 presses the first bearing 2, the pressing plate 310 contacts one end of the stator assembly, and the stator is located between the pressing plate 310 and the first bearing 2; when the pressing plate 310 presses the second bearing, the pressing plate 310 contacts the second bearing 3, and the second bearing 3 is located between the pressing plate 310 and the stator assembly 1 with the first bearing 2 pressed in.
[0050] In one embodiment, two or more bearings may be press-fitted onto one side of the stator assembly 1. Therefore, the second bearing assembly area 200 is also configured to assemble a third bearing onto the stator assembly on the same side as the second bearing. When multiple bearings need to be installed on one side of the stator assembly 1, the multiple bearings can be stacked together and then press-fitted onto the stator assembly 1.
[0051] This solution achieves fully automated press-fitting with high precision and accuracy. Furthermore, the shared press-fitting components on both sides of the bearings maximize space and time utilization, resulting in a high degree of automation and high press-fitting accuracy. The vertical press-fitting direction avoids the precision errors associated with horizontal press-fitting.
[0052] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.
Claims
1. A motor stator double-sided bearing mounting device, comprising: The first bearing assembly area (100) is configured to assemble the first bearing to one side of the stator assembly. The second bearing assembly area (200) is configured to assemble the second bearing to the other side of the stator assembly on which the first bearing is mounted; as well as Its features are, The first bearing assembly area (100) includes a first stator transfer assembly (110) and a first bearing transfer assembly (120). The first stator transfer assembly (110) transports the stator assembly to the first bearing assembly position (101), and the first bearing transfer assembly (120) transports the first bearing to a position directly above the stator assembly. The second bearing assembly area (200) includes a second stator transfer assembly (210) and a second bearing transfer assembly (220). The second stator transfer assembly (210) transports the stator assembly with the first bearing mounted thereon to the second bearing assembly position (201), and the second bearing transfer assembly (220) transports the second bearing to the area directly below the stator assembly with the first bearing mounted thereon. The motor stator double-sided bearing mounting equipment also includes a bearing press assembly (300), which presses the first bearing and the stator assembly together, and presses the stator assembly with the first bearing on it together with the second bearing.
2. The motor stator double-sided bearing mounting device according to claim 1, characterized in that, The first stator transport assembly (110) includes a first feed port (111) for receiving the stator assembly and a first stator transport channel (112) for transporting the stator assembly to the first bearing assembly position.
3. The motor stator double-sided bearing mounting device according to claim 2, characterized in that, The first bearing transport assembly (120) includes a first slinger (121), a first gripper (122), and a first bearing transport channel (123). The first bearing is slinged out from the first slinger (121), fixed by the first gripper (122), and transported along the first bearing transport channel (123) to the top of the stator assembly.
4. The motor stator double-sided bearing mounting device according to claim 3, characterized in that, The second stator transfer assembly (210) includes a transfer gripper (211) that receives the stator assembly with the first bearing mounted on it from the bearing press assembly (300), the transfer gripper gripping and transporting the stator assembly with the first bearing and the second bearing mounted on it to the discharge terminal.
5. The motor stator double-sided bearing mounting device according to claim 4, characterized in that, The second bearing transport assembly (220) includes a second slinger (221), a second gripper (222), and a second bearing transport channel (223). The second bearing is slinged out from the second slinger (221), fixed by the second gripper (222), and transported along the second bearing transport channel (223) to the underside of the stator assembly on which the first bearing is mounted.
6. The motor stator double-sided bearing mounting device according to any one of claims 1-5, characterized in that, The first bearing is the front bearing of the stator assembly, and the second bearing is the rear bearing of the stator assembly.
7. The motor stator double-sided bearing mounting device according to claim 1, characterized in that, When the bearing press-fit assembly (300) presses the first bearing, the bearing press-fit assembly contacts the stator assembly; when the bearing press-fit assembly (300) presses the second bearing, the bearing press-fit assembly contacts the second bearing.
8. The motor stator double-sided bearing mounting device according to claim 1, characterized in that, The bearing press assembly (300) is a servo press, including a press plate (310) and a servo mechanism (320). The servo mechanism (320) includes a servo motor, a pressure sensor and a control component. The servo mechanism (320) drives the press plate (310) to rise or fall. The pressure sensor feeds back the detected pressure information to the control component to determine whether the first bearing or the second bearing is correctly press-fitted to the stator assembly.
9. The motor stator double-sided bearing mounting device according to claim 8, characterized in that, When the press plate (310) presses the first bearing, the press plate (310) contacts one end of the stator assembly, and the stator is located between the press plate (310) and the first bearing; when the press plate (310) presses the second bearing, the press plate (310) contacts the second bearing, and the second bearing is located between the press plate (310) and the stator assembly on which the first bearing is pressed.
10. The motor stator double-sided bearing mounting device according to claim 1, characterized in that, The second bearing assembly area (200) is configured to assemble two second bearings onto the stator assembly.