Bearing end cap assembly mechanism
By employing coaxial positioning columns and magnetic adsorption in the bearing end cover assembly mechanism, the problem of bearing misalignment during installation on the end cover was solved, thereby improving the coaxiality of the bearing and the end cover and enhancing installation accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN JINMINJIANG RIVER MECHANICAL & ELECTRICAL EQUIP
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-05
AI Technical Summary
In the prior art, the bearing is prone to positional misalignment when installed on the end cover, resulting in poor coaxiality between the bearing and the end cover.
The system employs mounting brackets and press-fitting components, utilizing the coaxial arrangement of the first and second positioning columns, combined with the magnetic adsorption of the bearing's inner ring, to ensure coaxial positioning of the bearing and end cover. The press-fitting of the bearing is achieved through a lifting drive component.
This effectively prevents bearing misalignment and vibration during press-fitting, ensures the coaxiality of the bearing and end cover, simplifies the operation process, and improves installation accuracy.
Smart Images
Figure CN224322654U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of motor assembly, and more specifically, relates to a bearing end cover assembly mechanism. Background Technology
[0002] The motor consists of a rotor and a front cover. During assembly, a bearing is installed on the front cover, and then the rotor is mounted on the bearing.
[0003] Referring to Chinese patent CN209767340U, the front cover bearing assembly includes a first robotic arm, a pressing drive, a pressing component, and a pressure sensor. The pressing drive is connected to the pressing component and drives the pressing component to move up and down. The pressure sensor is located on the pressing component. During operation, the first robotic arm grasps the bearing and places it on the front cover on the fixture. Then, the pressing drive drives the pressing component to press down, thereby pressing the bearing into the front cover and installing the bearing on the front cover.
[0004] However, in the prior art, when the pressing component presses the bearing, it may cause the bearing to shift in position on the end cover, resulting in a technical problem that the coaxiality between the bearing and the end cover hole in the end cover needs to be improved. Utility Model Content
[0005] The purpose of this application is to provide a bearing end cover assembly mechanism to solve the problem in the related art that the coaxiality of the bearing and the end cover needs to be improved.
[0006] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:
[0007] A bearing end cap assembly mechanism is provided, comprising:
[0008] The mounting bracket includes a first support plate and a second support plate spaced apart vertically. The first support plate is provided with a first positioning post, which is used to be embedded in the bottom of the end cap.
[0009] A lifting drive component is mounted on the second support plate;
[0010] A press-fit assembly is installed at the output end of the lifting drive component. The press-fit assembly includes a first base and a second positioning post. The bottom of the first base has a first positioning plane. The second positioning post protrudes from the first positioning plane and is coaxially arranged with the first positioning post. The second positioning post is used to be embedded in the inner ring of the bearing. A magnet is provided on the periphery of the second positioning post, and the magnet is used to attract the inner ring of the bearing.
[0011] In one embodiment, the number of magnets is multiple, and the multiple magnets are distributed at circumferential intervals along the second positioning post.
[0012] In one embodiment, the second positioning post includes a first column segment and a second column segment connected together. The first column segment is located on the side of the second column segment away from the first positioning plane. The outer diameter of the first column segment gradually decreases in the direction away from the first positioning plane, while the outer diameter of the second column segment remains unchanged.
[0013] In one embodiment, the magnet is embedded in the end of the second column near the first column.
[0014] In one embodiment, the second column segment has a cylindrical hole, the rotation axis of which is located radially in the second column segment, and the shape of the magnet is adapted to the cylindrical hole.
[0015] In one embodiment, the magnet is fixedly installed inside the cylindrical hole, and the magnet does not protrude from the end face of the cylindrical hole.
[0016] In one embodiment, the press-fit assembly further includes a second seat, a connecting post, and a first support ring. The second seat is fitted over the first seat, and the bottom of the second seat has a second positioning plane located above the first positioning plane. The connecting post is fixedly installed on the second seat and extends vertically below the first positioning plane. The first support ring is installed on the connecting post and is used to press the top of the end cap.
[0017] In one embodiment, the press-fit assembly further includes an elastic sleeve, the first support ring is slidably mounted on the connecting post, and the elastic sleeve is sleeved on the connecting post and located between the second positioning plane and the first support ring.
[0018] In one embodiment, the press-fit assembly further includes a second support ring, which is embedded at the bottom of the first support ring and is used to press the top of the end cap. The second support ring is made of plastic.
[0019] In one embodiment, the first support ring and the second support ring have notches on their sides for the bearing to pass through and be fitted onto the second positioning post.
[0020] The bearing end cap assembly mechanism provided in this application has at least the following advantages: the end cap is positioned by a first positioning post, and the bearing is positioned by a second positioning post. The first and second positioning posts are coaxially arranged to ensure that the end cap and bearing are coaxially arranged. The magnet attracts and fixes the bearing on the second positioning post, so that the bearing can be located above the first positioning post and descend with the second positioning post under the drive of the lifting drive component, and be pressed into the end cap below from top to bottom. If the bearing is placed on the end cap in advance, it is easy to shift its position when pressed. If a clamp is used to hold the bearing and press it into the end cap from top to bottom, the clamp will interfere with the end cap, and the bearing may become unstable and shift its position when the clamp is withdrawn. In this application, the magnetic attraction eliminates the radial displacement that may be caused by the clamp, and avoids the positional jitter when the robot places the bearing, so that the pressing process always maintains a coaxial state. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the bearing end cap assembly mechanism provided in the embodiments of this application;
[0023] Figure 2 This is a schematic diagram of the assembly of the bearing and end cap;
[0024] Figure 3 for Figure 2 Another perspective view;
[0025] Figure 4 A schematic diagram of the press-fit assembly of the bearing end cap assembly mechanism provided in the embodiment;
[0026] Figure 5 for Figure 4 An exploded view of the press-fit components.
[0027] The main markings in the attached figures are as follows:
[0028] 10. Bearing; 20. End cap; 21. First positioning groove; 22. Bearing hole; 23. Second positioning groove;
[0029] 100. Mounting bracket; 110. First support plate; 111. First positioning post; 120. Second support plate; 130. Column;
[0030] 200. Lifting drive components;
[0031] 300, Press-fit assembly; 310, First seat; 311, First positioning plane; 320, Second positioning post; 321, First column segment; 322, Second column segment; 323, Cylindrical hole; 330, Magnet; 340, Second seat; 341, Second positioning plane; 350, Connecting post; 360, First support ring; 370, Elastic sleeve; 380, Second support ring; 390, Notch. Detailed Implementation
[0032] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0034] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly specified. "Several" means one or more, unless otherwise expressly specified.
[0035] In the description of this application, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 application 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 application.
[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0037] Throughout this specification, reference to "an embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrase "in one embodiment" or "in some embodiments" appears in various places throughout the specification, and not all references are to the same embodiment. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.
[0038] The bearing end cap assembly mechanism provided in the embodiments of this application will now be described. Please refer to... Figure 1 and Figure 4 The bearing end cover assembly mechanism includes a mounting bracket 100, a lifting drive component 200, and a pressing assembly 300. The mounting bracket 100 includes a first support plate 110 and a second support plate 120 spaced apart vertically. The first support plate 110 is provided with a first positioning post 111, which is used to be embedded in the bottom of the end cover 20. The lifting drive component 200 is mounted on the second support plate 120.
[0039] The press-fit assembly 300 is installed at the output end of the lifting drive component 200. The press-fit assembly 300 includes a first base 310 and a second positioning post 320. The bottom of the first base 310 has a first positioning plane 311. The second positioning post 320 protrudes from the first positioning plane 311. The second positioning post 320 and the first positioning post 311 are coaxially arranged. The second positioning post 320 is used to be embedded in the inner ring of the bearing 10. A magnet 330 is provided on the periphery of the second positioning post 320. The magnet 330 is used to attract the inner ring of the bearing 10.
[0040] The end cap 20 is positioned by the first positioning post 111, and the bearing 10 is positioned by the second positioning post 320. The first positioning post 111 and the second positioning post 320 are coaxially arranged to ensure that the end cap 20 and the bearing 10 are coaxially arranged. The magnet 330 attracts and fixes the bearing 10 on the second positioning post 320, so that the bearing 10 can be located above the first positioning post 111 and descend with the second positioning post 320 under the drive of the lifting drive component 200, and be pressed into the end cap 20 below from top to bottom.
[0041] If the bearing 10 is placed on the end cover 20 in advance, it will be prone to displacement during press-fitting. If a clamp is used to hold the bearing 10 and press it into the end cover 20 from top to bottom, the clamp will interfere with the end cover 20. When the clamp is removed, the bearing 10 may become unstable and shift its position.
[0042] In this application, the magnetic magnet 330 adsorption eliminates the radial offset that may be caused by the clamping fixture, and at the same time avoids positional jitter when the robot places the bearing 10, so that the pressing process always maintains a coaxial state.
[0043] In addition, the second positioning post 320 is detachably connected to the bearing 10 via a magnet. After the bearing 10 is press-fitted, the lifting drive 200 moves the second positioning post 320 upward. Since the bearing 10 is snapped into the end cover 20, the magnet 330 naturally separates from the bearing 10 during the upward movement, without the need for additional assembly or disassembly.
[0044] Specifically, the mounting bracket 100 also includes a column 130, with the two ends of the column 130 connected to a first support plate 110 and a second support plate 120, respectively. Optionally, there are four columns 130, which are evenly distributed around the lifting drive component 200.
[0045] Combination Figure 2 and Figure 3 The end cap 20 has a first positioning groove 21 at its bottom, and a first positioning post 111 is embedded in the first positioning groove 21 to achieve coaxial arrangement of the end cap 20 and the first positioning post 111. The end cap 20 has a bearing hole 22, and a bearing 10 is press-fitted into the bearing hole 22. The bearing hole 22 has a through hole in its center for the shaft to pass through.
[0046] In one embodiment, see Figure 4 and Figure 5 As a specific embodiment of the bearing end cap assembly mechanism provided in this application, there are multiple magnets 330, which are distributed circumferentially along the second positioning post 320. The multiple magnets 330 distributed circumferentially form a uniform annular magnetic field, and the magnetic force acts uniformly on the inner circumference of the bearing 10. The circumferentially distributed magnets 330 can form a symmetrical constraint to ensure that the bearing 10 is always coaxial with the second positioning post 320.
[0047] In one embodiment, see Figure 4 and Figure 5As a specific embodiment of the bearing end cap assembly mechanism provided in this application, the second positioning post 320 includes a first post segment 321 and a second post segment 322 connected to each other. The first post segment 321 is located on the side of the second post segment 322 away from the first positioning plane 311. The outer diameter of the first post segment 321 gradually decreases in the direction away from the first positioning plane 311. The first post segment 321 with a gradually changing outer diameter can automatically align with the inner ring of the bearing 10, reduce the positional deviation caused by manual or robotic placement, and make the bearing 10 slide into the second positioning post 320 more smoothly and coaxial with the second positioning post 320.
[0048] Specifically, the outer diameter of the second column segment 322 remains unchanged. The second column segment 322 with a fixed outer diameter has a large contact area with the inner ring of the bearing 10, which achieves a tight fit between the inner ring and the second column segment 322, and improves the coaxiality between the bearing 10 and the second positioning column 320.
[0049] In one embodiment, see Figure 4 and Figure 5 As a specific embodiment of the bearing end cap assembly mechanism provided in this application, the magnet 330 is embedded in the second column segment 322. The equal diameter of the second column segment 322 allows the magnet 330 to have the same contact distance with the inner ring of the bearing 10, resulting in a more balanced distribution of adsorption force and avoiding uneven adsorption force caused by the tapered surface.
[0050] Specifically, the magnet 330 is embedded in the end of the second column 322 near the first column 321. When the bearing 10 is pressed into the end cap 20, the attraction point of the magnet 330 is closer to the pressing force surface, effectively offsetting the axial reaction force in the initial pressing stage, and preventing the bearing 10 from sliding upward or tilting due to uneven force.
[0051] In one embodiment, see Figure 4 and Figure 5 As a specific embodiment of the bearing end cap assembly mechanism provided in this application, the second column segment 322 has a cylindrical hole 323, the rotation axis of the cylindrical hole 323 is located in the radial direction of the second column segment 322, and the shape of the magnet 330 is adapted to the cylindrical hole 323.
[0052] In this design, the rotation axis of the cylindrical magnet 330 coincides radially with that of the second positioning post 320. After installation, the magnetic force borne by the bearing 10 coincides radially with that of the second positioning post 320, causing it to attract towards the central axis of the second positioning shaft without rotation. Simultaneously, during press-fitting, the pressing force of the bearing 10 is transmitted vertically, and the magnet 330 only bears the radial attraction force, preventing the magnet 330 from loosening or falling off due to axial load.
[0053] Optionally, the cylindrical magnet 330 is interference-fitted with the cylindrical hole 323, and its axial end face is perpendicularly attached to the inner sidewall of the inner ring of the bearing 10. Compared with the irregular magnet 330, this can maximize the effective adsorption area and improve the magnetic stability.
[0054] In one embodiment, see Figure 4 and Figure 5 As a specific embodiment of the bearing end cap assembly mechanism provided in this application, the magnet 330 is fixedly installed inside the cylindrical hole 323, and the magnet 330 does not protrude from the end face of the cylindrical hole 323. The magnet 330 is hidden inside the cylindrical hole 323 and does not bear axial shear force, thus avoiding the magnet 330 from breaking or falling off due to long-term impact.
[0055] In one embodiment, see Figure 4 The bearing 10 is sleeved with the second positioning post 320, and one end face of the bearing 10 abuts against the first positioning plane 311. The first positioning plane 311 can ensure that the end face of the bearing 10 is horizontal and does not tilt.
[0056] In one embodiment, see Figure 4 and Figure 5 As a specific embodiment of the bearing end cap assembly mechanism provided in this application, the press-fit assembly 300 further includes a second seat 340, a connecting post 350, and a first support ring 360. The second seat 340 is sleeved on the first seat 310. The bottom of the second seat 340 has a second positioning plane 341, which is located above the first positioning plane 311. The connecting post 350 is fixedly installed on the second seat 340 and extends vertically below the first positioning plane 311. The first support ring 360 is installed on the connecting post 350. The first support ring 360 is used to press the top of the end cap 20 to stabilize the position of the end cap 20 and prevent the end cap 20 from shaking due to force during press-fitting.
[0057] In one embodiment, see Figure 4 and Figure 5 As a specific embodiment of the bearing end cap assembly mechanism provided in this application, the press-fit assembly 300 further includes an elastic sleeve 370. The first support ring 360 is slidably mounted on the connecting post 350, and the elastic sleeve 370 is sleeved on the connecting post 350 and located between the second positioning plane 341 and the first support ring 360. The elastic sleeve 370 is compressible at the moment of press-fit contact, which buffers and reduces the impact speed and impact force, avoiding surface indentations or cracks on the end cap 20.
[0058] In one embodiment, see Figure 4 and Figure 5As a specific embodiment of the bearing end cap assembly mechanism provided in this application, the press-fit assembly 300 further includes a second support ring 380, which is embedded in the bottom of the first support ring 360. The second support ring 380 is used to press the top of the end cap 20, and is made of plastic. Compared with metal parts, plastic parts have lower rigidity and are elastic. When the second support ring 380 presses the end cap 20, it can reduce the contact stress between the two.
[0059] Specifically, the second support ring 380 is embedded in the second positioning groove 23 of the end cover 20 to achieve stable support without rigid connection.
[0060] In one embodiment, see Figure 4 and Figure 5 As a specific embodiment of the bearing end cap assembly mechanism provided in this application, the first support ring 360 and the second support ring 380 have notches 390 on their sides. The notches 390 are used to allow the bearing 10 to pass through and be assembled onto the second positioning post 320. If the first support ring 360 and the second support ring 380 do not have notches 390, the bearing 10 needs to pass around the first support ring 360 and the second support ring 380 from below before magnetically attaching to the second positioning post 320. This results in a long movement trajectory and makes loading the bearing 10 cumbersome.
[0061] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.
[0062] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A bearing end cap assembly mechanism, characterized in that, The bearing end cap assembly mechanism includes: The mounting bracket includes a first support plate and a second support plate spaced apart vertically. The first support plate is provided with a first positioning post, which is used to be embedded in the bottom of the end cap. A lifting drive component is mounted on the second support plate; A press-fit assembly is installed at the output end of the lifting drive component. The press-fit assembly includes a first base and a second positioning post. The bottom of the first base has a first positioning plane. The second positioning post protrudes from the first positioning plane and is coaxially arranged with the first positioning post. The second positioning post is used to be embedded in the inner ring of the bearing. A magnet is provided on the periphery of the second positioning post, and the magnet is used to attract the inner ring of the bearing.
2. The bearing end cover assembly mechanism as described in claim 1, characterized in that: The number of magnets is multiple, and the multiple magnets are distributed at intervals along the circumference of the second positioning post.
3. The bearing end cover assembly mechanism as described in claim 1, characterized in that: The second positioning post includes a first column segment and a second column segment connected together. The first column segment is located on the side of the second column segment away from the first positioning plane. The outer diameter of the first column segment gradually decreases in the direction away from the first positioning plane, while the outer diameter of the second column segment remains unchanged.
4. The bearing end cap assembly mechanism as described in claim 3, characterized in that: The magnet is embedded in the end of the second column near the first column.
5. The bearing end cap assembly mechanism as described in claim 3, characterized in that: The second column segment has a cylindrical hole, the rotation axis of which is located in the radial direction of the second column segment, and the shape of the magnet is adapted to the cylindrical hole.
6. The bearing end cap assembly mechanism as described in claim 5, characterized in that: The magnet is fixedly installed inside the cylindrical hole, and the magnet does not protrude from the end face of the cylindrical hole.
7. The bearing end cover assembly mechanism as described in any one of claims 1 to 6, characterized in that: The press-fit assembly further includes a second seat, a connecting post, and a first support ring. The second seat is fitted onto the first seat. The bottom of the second seat has a second positioning plane, which is located above the first positioning plane. The connecting post is fixedly installed on the second seat and extends vertically below the first positioning plane. The first support ring is installed on the connecting post and is used to press the top of the end cap.
8. The bearing end cap assembly mechanism as described in claim 7, characterized in that: The press-fit assembly further includes an elastic sleeve, the first support ring is slidably mounted on the connecting post, and the elastic sleeve is sleeved on the connecting post and located between the second positioning plane and the first support ring.
9. The bearing end cap assembly mechanism as described in claim 7, characterized in that: The press-fit assembly further includes a second support ring, which is embedded at the bottom of the first support ring. The second support ring is used to press the top of the end cap, and the second support ring is made of plastic.
10. The bearing end cover assembly mechanism as described in claim 9, characterized in that: The first support ring and the second support ring have notches on their sides for the bearing to pass through and be fitted onto the second positioning post.