Mounting method for preventing bearing micro-motion in motor

Abstract

The invention relates to the technical field of installation of a bearing in a motor, in particular to an installation method for preventing the bearing micro-motion in the motor, and the method comprises the steps: selecting a bearing with a positive clearance, carrying out the precise machining of the assembly surfaces of a motor stator and a rotor bearing seat, and forming clearance fit and transition fit. And meanwhile, the annular groove is processed on the assembly surface and is filled with the binder, so that the problem of micro motion of the bearing is effectively solved, the stability and the reliability of motor operation are improved, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of installation of bearings in motors, and in particular to an installation method for preventing micro-movement of bearings in motors. Background Art

[0002] In the field of motor technology, especially the manufacture and application of motors, with the development of industrial automation and precision manufacturing technology, motors are widely used in various precision equipment due to their high precision, high efficiency and low maintenance cost. However, during the long-term operation of the motor, the micro-motion of the internal bearings leads to a decrease in axial and radial accuracy, which seriously affects the performance and service life of the equipment. This problem has become a bottleneck restricting the further development of motors in high-precision application scenarios.

[0003] At present, in order to solve the problem of motor bearing micromotion, the industry generally adopts a variety of methods, and the common methods include: 1) using high-precision bearings to reduce the occurrence of micromotion by improving the manufacturing accuracy of the bearings themselves; 2) optimizing the installation process of the bearings, such as improving their stability by adjusting the preload and installation position of the bearings; 3) using special materials and coatings to enhance the wear resistance and fatigue resistance of the bearing surface; 4) improving the design of the motor, such as adding support structures or changing the configuration of the bearings to reduce the impact of external vibration on the bearings. Although these methods can alleviate the problem of bearing micromotion to a certain extent, there are still many shortcomings in practical applications.

[0004] Although the above methods can reduce the phenomenon of bearing micromotion to a certain extent, they often cannot fundamentally solve the problem. Among them, the cost of high-precision bearings is relatively high, and it is still difficult to completely avoid micromotion under extreme working conditions; although optimizing the installation process and material processing can improve the performance of the bearing, the process complexity and cost will also increase; design improvements may require the redesign of the entire motor system, which is long and risky. Therefore, the existing solutions still have a lot of room for improvement in terms of economy and reliability, and a more effective and practical bearing installation method is urgently needed to completely solve the problem of motor bearing micromotion. Summary of the invention

[0005] In order to overcome the above-mentioned technical problems, the present application provides an installation method for preventing bearing micro-motion in a motor. By reasonably processing the motor bearing assembly surface, the problem of bearing micro-motion is effectively solved, the stability and reliability of the motor operation are improved, and the service life of the bearing is extended.

[0006] This application is implemented using the following technical solutions: A method for installing a motor to prevent micro-motion of a bearing, comprising: Choose bearings with positive clearance; According to the actual measured size of the inner ring or outer ring on the bearing corresponding to the bearing assembly surface of the motor stator part, the bearing assembly surface of the motor stator part is processed so that the bearing assembly surface of the motor stator part forms a clearance fit with the inner ring or outer ring of the bearing, and an annular groove is processed on the bearing assembly surface of the stator part, and the groove is used to fill the adhesive to fill the gap between the bearing assembly surface of the motor stator part and the inner ring or outer ring of the bearing; The bearing assembly surface of the motor stator part is processed according to the actual measured size of the outer ring or inner ring on the bearing corresponding to the bearing assembly surface of the motor rotor part, so that the bearing assembly surface of the motor rotor part forms a transition fit with the inner ring or outer ring of the bearing, so that during the installation of the bearing, the bearing assembly surface of the motor rotor part forms an extrusion deformation with the inner ring or outer ring of the bearing to reduce the clearance of the bearing.

[0007] By adopting the above technical solution, the micro-motion of the bearing during use can be effectively prevented, thereby reducing the wear of the inner and outer rings of the bearing, the contact surface of the bearing roller, and the mounting surface of the parts that match the inner and outer rings of the bearing, improving the axial accuracy and radial accuracy of the motor, and extending the service life and precision life of the motor. Specifically, by machining an annular groove on the assembly surface of the motor stator bearing seat and filling it with adhesive, the micro-motion of the bearing that may be caused by clearance fit is eliminated. At the same time, by performing transition fit processing on the assembly surface of the motor rotor bearing seat, the clearance of the bearing is reduced or even close to zero, further improving the running accuracy and stability of the motor.

[0008] Optionally, the clearance value range of the bearing is 0 to k mm, the component on the bearing that cooperates with the bearing assembly surface of the motor stator part is the inner ring, and the component that cooperates with the bearing assembly surface of the motor mover part is the outer ring; the bearing assembly surface of the motor stator part is processed according to the actual size of the bearing inner ring, so that the assembly clearance between the bearing assembly surface of the motor stator part and the bearing inner ring reaches a matching accuracy of h6-h7; the bearing assembly surface of the motor mover part is processed according to the actual size D1 mm and the calibrated size D mm of the bearing outer ring, wherein the reference size of the bearing assembly surface of the motor mover part is D mm, the upper deviation is a mm, and the lower deviation is b mm, a=-(D-D1+k), b=-(a+k / 2).

[0009] By adopting the above technical solution, which is mainly used in external rotor motors, the matching dimensions of the motor stator bearing seat and the outer ring of the bearing can be accurately controlled to ensure that the inner wall of the assembly surface produces appropriate elastic deformation on the outer ring of the bearing during the assembly process, thereby reducing the bearing clearance to a state close to zero, effectively preventing the wear caused by the micro-motion of the bearing, and improving the operating accuracy and service life of the DD motor. At the same time, by controlling the matching accuracy of the assembly surface of the motor stator bearing seat and the inner ring of the bearing within the range of h6-h7, and processing an annular groove on the assembly surface to fill the adhesive, the micro-motion phenomenon of the bearing during operation is further prevented, and the stability of the bearing is enhanced.

[0010] Optionally, the clearance value range of the bearing is 0 to k mm, the component on the bearing that cooperates with the bearing assembly surface of the motor stator part is the outer ring, and the component that cooperates with the bearing assembly surface of the motor mover part is the inner ring; the bearing assembly surface of the motor stator part is processed according to the actual size of the bearing outer ring, so that the assembly clearance between the bearing assembly surface of the motor stator part and the bearing outer ring reaches a matching accuracy of H6-H7; the bearing assembly surface of the motor mover part is processed according to the actual size D1 mm and the calibrated size D mm of the bearing inner ring, wherein the reference size of the bearing assembly surface of the motor mover part is D mm, the lower deviation is a mm, and the upper deviation is b mm; a=D-D1+k, b=a+k / 2.

[0011] By adopting the above technical solution, which is mainly used in inner rotor motors, the matching dimensions between the motor stator bearing seat and the outer ring of the bearing can be accurately controlled to ensure that the outer wall of the assembly surface produces appropriate elastic deformation on the inner ring of the bearing during the assembly process, thereby reducing the bearing clearance to a state close to zero, effectively preventing the wear caused by the micro-motion of the bearing, and improving the running accuracy and service life of the motor. At the same time, by controlling the matching accuracy of the assembly surface of the motor stator bearing seat and the outer ring of the bearing within the range of H6-H7, and processing an annular groove on the assembly surface to fill the adhesive, the micro-motion phenomenon of the bearing during operation is further prevented, and the stability of the bearing is enhanced.

[0012] Optionally, the groove is a closed ring structure and is located in the middle of the bearing assembly surface of the motor stator part.

[0013] By adopting the above technical solution, the groove is set in the middle of the motor stator bearing seat assembly surface, which can distribute the glue more evenly, ensure the fluidity of the glue during the assembly process, and better fill the gap between the assembly surface and the bearing, thereby effectively reducing the probability of bearing micro-motion and improving the accuracy and service life of the motor.

[0014] Optionally, the cross-section of the groove is a rectangular structure, the width of the groove is no more than one fifth of the depth of the assembly surface, and the depth of the groove is set according to the usage spacing of the adhesive.

[0015] By adopting the above technical solution, it is possible to ensure that the groove is reasonably set on the assembly surface, which can not only effectively fill the adhesive and prevent the bearing from micro-moving during use, but also its rectangular groove design is easy to process and manufacture, thereby improving production efficiency. At the same time, the depth of the groove is set according to the use spacing of the adhesive, which enhances the bonding effect and further improves the stability and service life of the bearing.

[0016] Optionally, the groove is arranged in a spiral structure on the bearing assembly surface of the stator part.

[0017] By adopting the above technical solution, the micro-motion of the bearing caused by clearance fit during the operation of the motor can be effectively prevented. The design of the spiral groove can ensure that the adhesive is more evenly distributed during the assembly process, and the total occupied assembly area is small, but the coverage range is larger. After filling the adhesive, the gap can be filled in a larger range.

[0018] Optionally, the adhesive is a high temperature resistant anaerobic adhesive.

[0019] By adopting the above-mentioned technical solution, the micro-motion phenomenon of the motor bearings during use can be effectively prevented, the axial accuracy and radial accuracy of the motor can be improved, and the service life of the motor can be extended. In particular, the use of high-temperature resistant anaerobic adhesive as a binder can maintain good bonding properties in a high-temperature environment, further enhance the anti-micro-motion effect, and ensure that the motor can still operate stably under high-temperature conditions.

[0020] Optionally, a plurality of guide grooves are processed on the surface where the bearing contacts the groove along the circumferential direction, and the guide grooves and the groove are arranged crosswise in the assembled state.

[0021] By adopting the above technical solution, the contact state between the bearing and the assembly surface can be effectively improved. Specifically, by processing a number of guide grooves on the surface where the bearing contacts the groove, and the guide grooves and the grooves are arranged crosswise, the fluidity and distribution uniformity of the glue can be significantly improved, thereby better filling the gap, enhancing the bonding strength of the glue, reducing the micro-motion phenomenon of the bearing during use, and further improving the operating accuracy and service life of the motor.

[0022] Optionally, the guide groove is arranged along the axial direction of the bearing.

[0023] By adopting the above technical solution, the processing of the guide groove can be facilitated, the processing cost can be reduced, and the construction efficiency can be improved.

[0024] Optionally, based on the bearing operating temperature variation range ΔT, calculate the change value ΔL of the radial dimension of the motor rotor assembly surface under temperature variation to ensure that ΔL≦k / 2, where: ΔL=λ*L0*ΔT, ΔL is the change in length, λ is the linear coefficient of thermal expansion, L0 is the original length, and k is the maximum clearance of the bearing.

[0025] By adopting the above technical solution, the radial dimension changes of the motor rotor assembly surface caused by temperature changes can be effectively compensated, ensuring that the fit between the motor rotor assembly surface and the bearing is always in an ideal state under different temperature conditions, preventing the fit clearance from increasing or being too tight due to temperature changes, thereby reducing the probability of bearing micro-movement, improving the operating accuracy and service life of the motor, and providing a reference for the early selection of bearings.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present invention effectively fills the gap between the assembly surface and the inner ring or outer ring of the bearing by machining an annular groove on the assembly surface of the motor stator bearing seat and filling it with adhesive, thereby preventing the micro-motion of the bearing caused by clearance fit, significantly reducing bearing wear, and improving the axial and radial accuracy of the motor; 2. The present application performs precise transition fit processing on the assembly surface of the motor rotor bearing seat, so that the assembly surface produces appropriate extrusion deformation on the inner ring or outer ring of the bearing during the installation process, thereby reducing the clearance of the bearing, further enhancing the stability of the bearing, and improving the working accuracy and service life of the motor; 3. This application takes into account the thermal expansion coefficient of the material, calculates the impact of temperature changes on the size of the assembly surface, and reasonably sets the machining tolerance of the assembly surface to ensure that the bearings remain in good fit under different temperature conditions, avoiding bearing micro-movement and wear caused by temperature changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of a bearing micro-motion prevention mounting structure in a motor in Embodiment 1; Figure 2 It is a partial schematic diagram of the anti-micro-motion mounting structure of the bearing in the motor in the first embodiment; Figure 3 is a structural schematic diagram of the bearing mounting surface of the stator component in the first embodiment; Figure 4 is a schematic diagram of a bearing micro-motion prevention mounting structure in a motor in Embodiment 2; Figure 5 It is a partial schematic diagram of the anti-micro-motion mounting structure of the bearing in the motor in the second embodiment; Figure 6 It is a structural schematic diagram of the bearing mounting surface of the stator component in the second embodiment; Figure 7It is a schematic diagram of the structure of the guide groove on the bearing in the second embodiment.

[0028] In the figure: 1. stator parts; 2. mover parts; 3. bearings; 31. inner ring; 32. outer ring; 33. rollers; 34. balls; 4. grooves; 5. guide grooves. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0030] Embodiment 1 Reference Figures 1 to 3 A method for installing a motor to prevent micro-motion of a bearing, wherein the motor is in the form of an outer rotor, including a stator part 1, a bearing 3, and a mover part 2, wherein the bearing 3 is a cross roller bearing, and the specific structure of the cross roller bearing includes an inner ring 31, a roller 33 and an outer ring 32.

[0031] Before assembling the bearing 3, it is necessary to select a cross roller bearing with positive clearance, the clearance range of which is 0 to k mm, and then process the bearing assembly surface of the motor stator part 1 and the bearing assembly surface of the motor mover part 2 according to the size of the cross roller bearing.

[0032] Among them, Figures 2-3 As shown, the bearing assembly surface of the motor stator part 1 is processed according to the actual size of the inner ring 31 of the cross roller bearing, so that the bearing assembly surface of the motor stator part 1 forms a clearance fit with the inner ring 31. Specifically, the machining and fitting accuracy of the bearing assembly surface of the motor stator part 1 corresponding to the inner ring 31 should reach the h6-h7 level. In addition, in order to prevent the bearing 3 from micro-moving due to clearance fit during operation, it is necessary to process a closed annular groove 4 on the bearing assembly surface of the motor stator part for filling with adhesive to fill the assembly gap.

[0033] The adhesive used in this embodiment is a high-temperature resistant anaerobic adhesive, such as Loctite 648 glue. During the assembly process, the annular groove 4 on the bearing assembly surface of the motor stator part is first filled with adhesive, and then the bearing 3 is installed; the maximum use gap of the adhesive is 0.15 mm, so the depth of the groove 4 should match this; excess glue will be squeezed out of the bearing 3 assembly position during the assembly process, and the specific amount needs to be determined according to the size of the bearing 3 and the type of glue used; the specific processing parameters of the annular groove 4 are as follows: the cross-section of the groove 4 is a rectangular structure, the width is not more than one-fifth of the depth of the assembly surface, and the depth is set according to the use spacing of the adhesive. In this embodiment, the adhesive uses Loctite 648 glue, then the width of the groove 4 can be set to 1 mm and the depth is 0.15 mm. This design can ensure that the adhesive is evenly distributed during the assembly process, effectively fill the gap, and prevent the bearing 3 from micro-moving.

[0034] like Figures 2-3 As shown, the bearing assembly surface of the motor mover part 2 is processed according to the actual size D1 mm and the calibrated size D mm of the outer ring 32 of the bearing 3, so that the bearing assembly surface of the motor mover part 2 forms a transition fit with the outer ring 32 of the bearing 3, so that during the installation process of the bearing 3, the bearing assembly surface of the motor mover part 2 is extruded and deformed against the outer ring 32 of the bearing 3 to reduce the clearance of the bearing 3. Specifically, the transition fit size should be proportional to the clearance size of the bearing 3. The reference size of the bearing assembly surface of the motor mover part 2 is D mm, and the upper deviation is a mm. m, the lower deviation is b mm, a=-(D-D1+k), b=-(a+k / 2); In this embodiment, the calibrated dimension D of the outer ring 32 of the bearing 3 is 41 mm, the actual measured dimension D1 is 40.995 mm, and the clearance of the bearing 3 is 0~+0.01 mm. Then the upper deviation of the transition fit dimension of the motor mover part 2 is a=-(41-40.995+0.01) mm, i.e. a=0.015 mm, and the lower deviation b=-(0.015+0.005) mm, i.e. b=0.02 mm. The machining dimension of the bearing assembly surface of the motor mover part 2 is

[0035] In practical applications, changes in the operating temperature of the motor will affect the thermal expansion of the material. Therefore, if the temperature of the bearing changes greatly during operation, it is necessary to calculate the change value ΔL of the radial dimension of the motor rotor assembly surface under temperature change based on the bearing operating temperature change range ΔT. The specific calculation formula is: ΔL = λ*L0*ΔT, where ΔL is the change in length and λ is the linear coefficient of thermal expansion; the difference ΔD between the upper deviation and the lower deviation is calculated based on the machining dimensions of the motor rotor assembly surface to ensure that ΔL≦k / 2, where k is the clearance value range of the bearing. This design can ensure that when the temperature changes, the dimensional change of the motor rotor assembly surface will not exceed the allowable range, thereby ensuring the normal operation of the bearing. Due to the change in temperature, the bearing can also be controlled by external cooling, so that the temperature of the bearing is in a smaller change, reducing deformation, thereby reducing the impact of temperature reduction on the bearing clearance after assembly.

[0036] The implementation principle of this embodiment is as follows: through the above-mentioned design scheme, the present invention can effectively prevent the bearing 3 from micro-moving during use. Specifically, the clearance fit design between the bearing assembly surface of the motor stator part 1 and the inner ring 31 of the bearing 3, combined with the use of the annular groove 4 and the adhesive, can effectively fill the gap and prevent the bearing 3 from micro-moving. At the same time, the transition fit design between the bearing assembly surface of the motor stator part 1 and the outer ring 32 of the bearing 3 can ensure that the outer ring 32 of the bearing 3 is squeezed during the assembly process, reduce the clearance of the bearing 3, and further prevent the bearing 3 from micro-moving. This design can not only improve the operating accuracy of the motor, but also extend its service life, solving the problems existing in the prior art.

[0037] Embodiment 2 Reference Figures 4-5 A method for installing a motor to prevent micro-motion of a bearing, wherein the motor is an inner rotor type, including a stator part 1, a bearing 3, and a mover part 2, wherein the bearing 3 is a deep groove ball bearing, and the specific structure of the deep groove ball bearing includes an inner ring 31, a ball 34, and an outer ring 32.

[0038] Before assembling the bearing 3, it is necessary to select a deep groove ball bearing with positive clearance, the clearance range of which is 0 to k mm. Then, according to the size of the deep groove ball bearing 3, the bearing assembly surface of the motor stator part 1 and the bearing assembly surface of the motor mover part 2 are processed.

[0039] like Figures 4-5As shown, the bearing assembly surface of the motor stator part 1 is processed according to the actual size of the outer ring 32 of the deep groove ball bearing 3, so that the bearing assembly surface of the motor stator part 1 forms a clearance fit with the outer ring 32. Specifically, the machining and fitting accuracy of the motor stator part bearing assembly surface corresponding to the outer ring 32 of the bearing 3 should reach the H6-H7 level. In addition, in order to prevent the bearing 3 from micro-moving due to clearance fit during operation, it is necessary to process an annular groove 4 on the bearing assembly surface of the motor stator part 1 for filling with adhesive; the adhesive used in this embodiment is a high temperature resistant anaerobic adhesive, such as Loctite 648 glue. During the assembly process, the annular groove 4 on the bearing assembly surface of the stator part 1 is first filled with adhesive, and then the bearing 3 is installed.

[0040] like Figures 5-6 As shown, in order to effectively prevent the micro-motion of the bearing 3 caused by clearance fit during the operation of the motor, the groove 4 in this example is arranged in a spiral. The design of the spiral groove 4 can not only better fill the glue and enhance the bonding effect of the glue, but also increase the contact area between the glue and the assembly surface, ensuring the uniform distribution of the adhesive, improving the anti-micro-motion performance, and reducing the wear of the bearing 3 during use, thereby extending the service life of the motor and maintaining higher precision; the specific processing parameters of the groove 4 are as follows: the cross-section of the groove 4 is a rectangular structure, and the depth is set according to the use spacing of the adhesive. In this embodiment, the adhesive uses Loctite 648 glue, the width of the groove 4 is set to 0.2 mm, the depth is 0.15 mm, and it goes around 5 times. This design can ensure that the adhesive is more evenly distributed during the assembly process, and the total occupied assembly area is small, but it has a larger coverage range. After filling the adhesive, the gap can be filled in a larger range to prevent the micro-motion of the bearing 3.

[0041] like Figure 7 As shown, in order to further improve the fluidity and uniform distribution of the glue, so as to better fill the gap, enhance the bonding strength of the glue, and reduce the micro-motion of the bearing 3 during use, a number of axially arranged guide grooves 5 are processed on the circumference of the outer ring 32 of the bearing 3. After the bearing 3 is assembled, the guide grooves 5 are staggered with the grooves 4. Specifically, the width of the guide grooves 5 is not more than 0.1 mm, and the depth is not more than 0.05 mm. In addition, some small holes can be designed at the end of the guide grooves 5. These small holes can further guide the flow of the adhesive and increase the filling density, thereby more effectively preventing the micro-motion of the bearing 3. During the installation process, the guide grooves 5 are also coated with adhesive.

[0042] like Figures 4-5As shown, the bearing assembly surface of the motor mover part 2 is processed according to the actual size D1 mm and the calibrated size D mm of the inner ring 31 of the bearing 3, so that the bearing assembly surface of the motor mover part 2 forms a transition fit with the inner ring 31 of the bearing 3, so that during the installation process of the bearing 3, the bearing assembly surface of the motor mover part 2 is extruded and deformed against the inner ring 31 of the bearing 3, ensuring that under the transition fit state, the clearance of the bearing 3 is reduced to close to the 0 line, thereby preventing the bearing 3 from moving slightly; specifically, the transition fit size should be proportional to the clearance size of the bearing 3, the reference size of the bearing assembly surface of the motor mover part 2 is D mm, the lower deviation is a mm, the upper deviation is b mm, a=D-D1+k, b=a+k / 2.

[0043] In this embodiment, the nominal dimension D of the inner ring 31 of the bearing 3 is 38 mm, the actual measured dimension D1 is 37.994 mm, and the clearance of the bearing 3 is 0~+0.01 mm. Then, the upper deviation a=38-37.994+0.01 mm, i.e. a=0.016 mm, and the lower deviation b=0.016+0.005 mm, i.e. b=0.021 mm, that is: the machining dimension of the bearing assembly surface of the motor mover part 2 is

[0044] The implementation principle of this embodiment is as follows: through the above-mentioned design scheme, the present invention can effectively prevent the bearing 3 from micro-moving during use. Specifically, the clearance fit design between the bearing assembly surface of the motor stator part 1 and the outer ring 32 of the bearing 3, combined with the use of the annular groove 4 and the adhesive, can effectively fill the gap and prevent the bearing 3 from micro-moving. At the same time, the transition fit design between the bearing assembly surface of the motor stator part 1 and the inner ring 31 of the bearing 3 can ensure that the inner ring 31 of the bearing 3 is squeezed during the assembly process, reduce the clearance of the bearing 3, and further prevent the bearing 3 from micro-moving. This design can not only improve the operating accuracy of the motor, but also extend its service life, solving the problems existing in the prior art.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for preventing bearing micro-motion in a motor, characterized in that: The following steps are involved: Select bearings with positive clearance (3); According to the actual measured size of the inner ring (31) or the outer ring (32) on the bearing (3) corresponding to the bearing assembly surface of the motor stator part (1), the bearing assembly surface of the motor stator part (1) is processed so that the bearing assembly surface of the motor stator part (1) and the inner ring (31) or the outer ring (32) of the bearing (3) form a clearance fit, and a groove (4) is processed on the bearing assembly surface of the stator part (1), wherein the groove (4) is used to fill the adhesive to fill the gap between the bearing assembly surface of the motor stator part (1) and the inner ring (31) or the outer ring (32) of the bearing (3); The bearing assembly surface of the motor mover part (2) is processed according to the actual measured dimensions of the outer ring (32) or the inner ring (31) on the bearing (3) corresponding to the bearing assembly surface of the motor mover part (2), so that the bearing assembly surface of the motor mover part (2) forms a transition fit with the inner ring (31) or the outer ring (32) of the bearing (3), so that during the installation process of the bearing (3), the bearing assembly surface of the motor mover part (2) is extruded and deformed against the inner ring (31) or the outer ring (32) of the bearing (3), so as to reduce the clearance of the bearing (3).

2. The method for preventing micro-motion of a bearing in a motor according to claim 1, characterized in that: The clearance value of the bearing (3) ranges from 0 to k millimeters. The component on the bearing (3) that matches the bearing assembly surface of the motor stator component (1) is the inner ring (31), and the component that matches the bearing assembly of the motor mover component (2) is the outer ring (32). The bearing assembly surface of the motor stator component (1) is processed according to the actual size of the inner ring (31) of the bearing (3), so that the assembly clearance between the bearing assembly surface of the motor stator component (1) and the inner ring (31) of the bearing (3) reaches a matching accuracy of h6-h7. The bearing assembly surface of the motor mover component (2) is processed according to the actual size D1 millimeters and the calibrated size D millimeters of the outer ring (32) of the bearing (3), wherein the reference size of the bearing assembly surface of the motor mover component (2) is D millimeters, the upper deviation is a millimeters, the lower deviation is b millimeters, and a=-(D-D1+k), b=-(a+k / 2).

3. The method for preventing micro-motion of a bearing in a motor according to claim 1, characterized in that: The clearance value of the bearing (3) ranges from 0 to k millimeters. The component on the bearing (3) that matches the bearing assembly surface of the motor stator component (1) is the outer ring (32), and the component that matches the bearing assembly surface of the motor mover component (2) is the inner ring (31). The bearing assembly surface of the motor stator component (1) is processed according to the actual size of the outer ring (32) of the bearing (3), so that the assembly clearance between the bearing assembly surface of the motor stator component (1) and the outer ring (32) of the bearing (3) reaches a matching accuracy of H6-H7. The bearing assembly surface of the motor mover component (2) is processed according to the actual size D1 millimeters of the inner ring (31) of the bearing (3) and the calibrated size D millimeters, wherein the reference size of the bearing assembly surface of the motor mover component (2) is D millimeters, the lower deviation is a millimeters, and the upper deviation is b millimeters; a=D-D1+k, b=a+k / 2.

4. The method for preventing micro-motion of a bearing in a motor according to claim 1, characterized in that: The groove (4) is a closed ring structure and is located in the middle of the bearing assembly surface of the motor stator component (1).

5. The method for preventing micro-movement of a bearing in a motor according to claim 4, characterized in that: The cross section of the groove (4) is a rectangular structure, the width of the groove (4) is no greater than one fifth of the depth of the bearing assembly surface of the motor stator component (1), and the depth of the groove (4) is set according to the use spacing of the adhesive.

6. The method for preventing micro-movement of a bearing in a motor according to claim 4, characterized in that: The groove (4) is arranged in a spiral structure on the bearing assembly surface of the stator component (1).

7. The method for preventing micro-motion of a bearing in a motor according to claim 1, characterized in that: The adhesive is high temperature resistant anaerobic adhesive.

8. The method for preventing micro-movement of a bearing in a motor according to claim 1, characterized in that: A plurality of guide grooves (5) are machined on the surface where the bearing (3) and the groove (4) are in contact along the circumferential direction, and the guide grooves (5) and the groove (4) are arranged crosswise in the assembled state.

9. The method for preventing micro-motion of a bearing in a motor according to claim 8, characterized in that: The guide groove (5) is arranged along the axial direction of the bearing.

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