CN221474150U - Bearing press-fitting device - Google Patents
Bearing press-fitting device Download PDFInfo
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- CN221474150U CN221474150U CN202322904853.5U CN202322904853U CN221474150U CN 221474150 U CN221474150 U CN 221474150U CN 202322904853 U CN202322904853 U CN 202322904853U CN 221474150 U CN221474150 U CN 221474150U
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- bearing
- end cover
- press
- center
- cylinder
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- 238000000034 method Methods 0.000 claims description 2
- 238000005457 optimization Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model discloses a motor bearing press-fitting device, which comprises an oil cylinder; the lower end of the telescopic rod of the oil cylinder is opposite to the bearing chamber in the center of the end cover; a plurality of support columns are arranged around the end cover, positioning pins are arranged at the top ends of the support columns, and are inserted into mounting holes in the end cover flange; a supporting ring is arranged in the middle of the lower part of the end cover; the lower end of the telescopic rod is connected with a press-fit cylinder, the bottom center of the press-fit cylinder is a concave cavity, and the shape of the lower part of the cylinder wall corresponds to the shape of the outer ring of the bearing; the magnetic attraction block is connected to the center of the concave cavity, and a downward convex bulge is arranged in the center of the magnetic attraction block and is used for being inserted into the inner ring of the bearing, and the lower part of the cylinder wall corresponds to the coaxial position of the outer ring of the bearing. The utility model can accurately align the positions of the bearing and the end cover, ensure the quality of bearing press-fitting, and is convenient and quick to clamp, thereby improving the working efficiency.
Description
Technical Field
The utility model belongs to the technical field of motor manufacturing, and particularly relates to a motor bearing press-fitting device.
Background
The motor is operated at a high speed with both ends of the spindle supported by bearings, which are typically mounted on end caps of the motor. The bearing chamber in the center of the end cover is in interference fit with the outer ring of the bearing. When assembled, a large press-fit force is required to press-fit the bearing to the end cap. Therefore, the positions of the bearing and the end cap need to be precisely positioned before the bearing is press-fitted.
In the prior art, patent publication No. CN216356402U, a motor end cover bearing pressing device, is characterized in that a plurality of sliding blocks are radially arranged at the center of a pressing plate, and a bearing and an end cover of a motor are clamped under the drive of a spring. The problem is that spring force clamping is not reliable enough, the positioning of the circumferentially arranged sliding blocks is not accurate enough, the bearing or the end cover is easy to skew, and the bearing or the end cover can be damaged by larger pressure during press fitting.
Disclosure of Invention
In order to overcome the defects in the background art, the utility model provides a bearing press-fitting device, which aims at precisely aligning, improving the coaxiality of bearing chambers in the centers of a bearing and an end cover, ensuring the press-fitting quality of the bearing, and rapidly clamping the bearing and the end cover and improving the working efficiency.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
A bearing press-fitting device comprises an oil cylinder; the oil cylinder is fixedly connected to the top end of the frame, the frame cover is buckled above an end cover of the motor to be assembled, and the lower end of the telescopic rod of the oil cylinder is opposite to a bearing chamber in the center of the end cover; a plurality of support columns are arranged around the end cover, positioning pins are arranged at the top ends of the support columns, and are inserted into mounting holes in the end cover flange; a supporting ring is arranged in the middle of the lower part of the end cover and is used for propping against the lower surface of the end cover when the bearing is pressed and assembled; the lower end of the telescopic rod is connected with a press-fit cylinder, the center of the bottom of the press-fit cylinder is a concave cavity, the shape of the lower part of the cylinder wall of the press-fit cylinder corresponds to the shape of the outer ring of the bearing, and when the telescopic rod is used for press-fitting the bearing, the lower end of the cylinder wall is propped against the end face of the outer ring; the magnetic attraction block is connected to the center of the concave cavity, and a downward convex bulge is arranged in the center of the magnetic attraction block and is used for being inserted into the inner ring of the bearing, and the lower part of the cylinder wall corresponds to the coaxial position of the outer ring of the bearing.
As further optimization, the magnetic attraction block is detachably connected to the center of the concave cavity.
As further optimization, the center of the magnetic attraction block is provided with a through hole, and the center of the concave cavity is provided with a threaded hole, and the magnetic attraction block is detachably connected with the center of the concave cavity when the magnetic attraction block is screwed in the threaded hole through the through hole by a bolt.
As further optimization, the device further comprises a base, wherein the support ring is arranged on the upper surface of the center of the base, a plurality of support columns are circumferentially distributed around the support ring, and the lower ends of the support columns are fixedly connected to the upper surface of the base; the frame comprises a plurality of stand columns, the lower ends of the stand columns are fixedly connected to the upper surface of the base, and the frame cover is buckled above an end cover of the motor to be assembled.
As a further optimization, the spring is sleeved outside the supporting ring, the lower end of the spring is propped against the upper surface of the base, and the upper end of the spring is propped against the lower surface of the end cover when the bearing is pressed.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The magnetic attraction block with the protruding part can accurately position the bearing, is firmly fixed, and is not easy to skew.
(2) The end cover is positioned through the pin, so that positioning is accurate, and coaxiality of the bearing chamber and the bearing is ensured.
(3) The resistance of the end cover is small, the assembly and disassembly are convenient and quick, the labor intensity is reduced, and the assembly and disassembly efficiency is improved.
(4) The bearing is connected through magnetic attraction, and when the press-fitting cylinder moves upwards, the bearing is automatically separated from the press-fitting cylinder, and meanwhile, the bearing is clamped again conveniently and rapidly, so that the operation is simple, and the bearing is easy to learn and can be easily realized.
In a word, this device can accurate alignment bearing and end cover's position, ensures bearing press-fit's quality to the clamping is convenient quick, promotes work efficiency.
Drawings
FIG. 1 is a schematic plan view of embodiment 1 of the present utility model;
Fig. 2 is a partial enlarged view of fig. 1.
The corresponding relation between the technical characteristics and the reference numerals in the drawings is as follows: an oil cylinder 1; a press-fitting cylinder 11; a cavity 12; a magnetic attraction block 13; a bolt 14; a threaded hole 15; a frame 2; an end cap 3; a bearing chamber 31; a support column 4; a positioning pin 41; a support ring 42; a base 43; a column 45; a spring 6; and a bearing 7.
Detailed Description
The following description of the embodiments of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments thus described are only some, but not all, of the preferred embodiments of the present utility model. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.
Example 1: please refer to fig. 1;
The utility model provides the following technical scheme: the bearing press-fitting device comprises an oil cylinder 1 in the process of pressing a bearing 7 at the center of an end cover 3 of a motor; the oil cylinder 1 is fixedly connected to the top end of the frame 2, the frame 2 is covered and buckled above the end cover 3 of the motor to be assembled, and the lower end of the telescopic rod of the oil cylinder 1 is opposite to the bearing chamber 31 in the center of the end cover 3; a plurality of support columns 4 are arranged around the end cover 3, positioning pins 41 are arranged at the top ends of the support columns 4, and the positioning pins 41 are inserted into mounting holes in the flange of the end cover 3; a supporting ring 42 is arranged in the middle of the lower part of the end cover 3, and when the bearing 7 is pressed and assembled, the top surface of the supporting ring 42 props against the lower surface of the end cover 3; the lower end of the telescopic rod is connected with a press-fit cylinder 11, the bottom center of the press-fit cylinder 11 is a concave cavity 12, the shape of the lower part of the cylinder wall corresponds to the shape of the outer ring of the bearing 7, and when the telescopic rod is used for press-fitting the bearing 7, the lower end of the cylinder wall props against the end face of the outer ring; the magnetic attraction block 13 is connected to the center of the concave cavity 12, and a protruding portion protruding downwards is arranged at the center of the magnetic attraction block 13 and used for coaxially corresponding to the outer ring of the bearing 7 when the protruding portion is inserted into the inner ring of the bearing 7.
The working principle comprises that firstly, the oil cylinder 1 and the bearing chamber 31 are coaxially arranged up and down, and preliminary positioning is completed. The end cover 3 is precisely positioned by the positioning pin 41; when the magnetic attraction block 13 is inserted into the inner ring of the bearing 7, firstly, the lower part of the cylinder wall and the outer ring of the bearing 7 are precisely positioned, secondly, the bearing 7 and the position of the bearing chamber 31 are coaxially positioned, thirdly, the bearing 7 is connected with the press-fitting cylinder 11 through magnetic attraction, and the purpose of the magnetic attraction is to overcome the dead weight of the bearing 7, so that the assembly and disassembly are convenient, the fixation is firm, and the skew is not easy to occur. Thereby, the coaxial positioning accuracy of the bearing chamber 31 and the position of the bearing 7 is ensured. And end cover 3 and bearing 7 all can be quick place the preset position on, realize quick clamping bearing 7 and end cover 3, promote work efficiency. During press fitting, frictional resistance between the outer ring of the bearing 7 and the side wall of the bearing chamber 31 is borne by the cylinder wall, so that the force is prevented from being applied to the inner ring of the bearing 7 to damage the structure of the bearing 7, and the device can apply larger press fitting force through the oil cylinder 1, thereby improving press fitting efficiency. The pressure born by the end cover is conducted to the supporting ring to bear, so that the end cover is prevented from deforming.
In order to facilitate maintenance and replacement, the magnetic attraction block 13 is detachably connected to the center of the concave cavity 12.
An exemplary detachable manner is that a through hole is formed in the center of the magnetic attraction block 13, a threaded hole 15 is formed in the center of the concave cavity 12, and the magnetic attraction block 13 is detachably connected to the center of the concave cavity 12 when a bolt 14 passes through the through hole and is screwed into the threaded hole 15.
Illustratively, the support ring 42 is mounted on the central upper surface of the base 43, the plurality of support columns 4 are circumferentially distributed around the support ring 42, and the lower ends of the support columns are fixedly connected to the upper surface of the base 43; the frame 2 comprises a plurality of upright posts 45, and the lower ends of the upright posts 45 are fixedly connected to the upper surface of the base 43, so that the frame 2 is covered and buckled above the end cover 3 of the motor to be assembled. The cylinder 1 may be always arranged right above the end cap 3 to facilitate repeated operations.
In order to facilitate the taking of the end cover 3 after the bearing 7 is pressed, an ejection mechanism is designed, the spring 6 is sleeved outside the supporting ring 42, the lower end of the spring is propped against the upper surface of the base 43, and the upper end of the spring is propped against the lower surface of the end cover 3 when the bearing is pressed. The frictional resistance of the locating pin 41 and the mounting hole is overcome by the spring 6 to facilitate the removal of the end cap 3.
When the end cover 3 is used, firstly, the end cover 3 is installed, the installation holes of the end cover 3 are aligned with the positioning pins 41, and then the hand end cover 3 is loosened to naturally fall down until the lower surface of the end cover 3 is propped by the supporting ring 42 or the spring 6, so that the positioning of the end cover 3 is completed; secondly, installing the bearing 7, grabbing the bearing 7, enabling the inner ring of the bearing 7 to be aligned with the protruding part, and moving the bearing 7 upwards until the bearing 7 is attracted by the magnetic attraction block 13 and fixedly connected with the press-fit cylinder 11 into a whole; thirdly, press fitting, namely driving the oil cylinder 1 to extend until the bearing 7 is press-fitted into the bearing chamber 31; fourth, disengaging to drive the oil cylinder 1 to retract, wherein the friction force between the outer ring of the bearing 7 and the side wall of the bearing chamber 31 is large due to interference fit, and when the press-fit cylinder 11 moves upwards, the magnetic attraction of the magnetic attraction block 13 is overcome, so that the magnetic attraction block 13 is separated from the bearing 7; the gripping end cap 3 is moved up until the positioning pin 41 is separated from the mounting hole, the end cap 3 is taken out, and press-fitting is completed. And fifthly, repeating the steps one to four, and pressing the bearing 7 of the next end cover 3.
The embodiment has the advantages that compared with the prior art:
(1) The magnetic attraction block 13 with the protruding part can accurately position the bearing 7, is firmly fixed, and is not easy to skew the bearing 7.
(2) By positioning the end cap 3 by the pin, positioning is accurate, and coaxiality of the bearing chamber 31 and the bearing 7 is ensured.
(3) The resistance of the end cover 3 is small, the assembly and disassembly are convenient and quick, the labor intensity is reduced, and the assembly and disassembly efficiency is improved.
(4) The bearing 7 is connected through magnetic attraction, when the press-fitting barrel 11 moves upwards, the bearing 7 is automatically separated from the press-fitting barrel 11, and meanwhile, the bearing 7 is clamped again conveniently and rapidly, so that the operation is simple, and the learning is easy.
In a word, this embodiment can accurate alignment bearing 7 and end cover 3's position, ensures the quality of bearing 7 pressure equipment to the clamping is convenient quick, promotes work efficiency.
The utility model has not been described in detail in the prior art; it should be understood by those skilled in the art that any combination of the features of the foregoing embodiments may be adopted, and that all possible combinations of the features of the foregoing embodiments are not described for brevity of description, however, such combinations are not to be considered as a contradiction between the features. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. A bearing press-fitting device comprises an oil cylinder (1); the oil cylinder (1) is fixedly connected to the top end of the frame (2), the frame (2) is covered and buckled above the end cover (3) of the motor to be assembled, and the lower end of the telescopic rod of the oil cylinder (1) is opposite to the bearing chamber (31) in the center of the end cover (3); the method is characterized in that: a plurality of support columns (4) are arranged around the end cover (3), positioning pins (41) are arranged at the top ends of the support columns (4), and the positioning pins (41) are inserted into mounting holes in the flange of the end cover (3); a supporting ring (42) is arranged in the middle of the lower part of the end cover (3) and is used for propping against the lower surface of the end cover (3) when the bearing (7) is pressed and assembled;
The lower end of the telescopic rod is connected with a press-fit cylinder (11), the bottom center of the press-fit cylinder (11) is a concave cavity (12), the shape of the lower part of the cylinder wall of the press-fit cylinder corresponds to the shape of the outer ring of the bearing (7), and when the telescopic rod is used for press-fitting the bearing (7), the lower end of the cylinder wall is propped against the end face of the outer ring; the magnetic attraction block (13) is connected to the center of the concave cavity (12), and a downward protruding portion is arranged at the center of the magnetic attraction block (13) and used for coaxially corresponding to the outer ring of the bearing (7) when the protruding portion is inserted into the inner ring of the bearing (7).
2. The motor shaft press-fitting device according to claim 1, wherein: the magnetic block (13) is detachably connected to the center of the concave cavity (12).
3. The motor shaft press-fitting device according to claim 2, wherein: the center of the magnetic block (13) is provided with a through hole, the center of the concave cavity (12) is provided with a threaded hole (15) for connecting the magnetic block (13) to the center of the concave cavity (12) when the bolt (14) passes through the through hole and is screwed in the threaded hole (15).
4. A motor shaft press-fitting device as set forth in claim 3, wherein: the support ring (42) is arranged on the upper surface of the center of the base (43), a plurality of support columns (4) are circumferentially distributed around the support ring (42), and the lower ends of the support columns are fixedly connected to the upper surface of the base (43); the frame (2) comprises a plurality of stand columns (45), the lower ends of the stand columns (45) are fixedly connected to the upper surface of the base (43), and the stand columns are used for covering the frame (2) above an end cover (3) of the motor to be assembled.
5. The motor shaft press-fitting device according to claim 4, wherein: the spring (6) is sleeved on the outer side of the supporting ring (42), the lower end of the spring is propped against the upper surface of the base (43), and the upper end of the spring is propped against the lower surface of the end cover (3) when the bearing (7) is pressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322904853.5U CN221474150U (en) | 2023-10-27 | 2023-10-27 | Bearing press-fitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322904853.5U CN221474150U (en) | 2023-10-27 | 2023-10-27 | Bearing press-fitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221474150U true CN221474150U (en) | 2024-08-06 |
Family
ID=92365549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322904853.5U Active CN221474150U (en) | 2023-10-27 | 2023-10-27 | Bearing press-fitting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221474150U (en) |
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2023
- 2023-10-27 CN CN202322904853.5U patent/CN221474150U/en active Active
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