New energy motor stator and rotor assembly equipment and assembly method

Abstract

This invention discloses a stator and rotor assembly device and method for a new energy motor. The assembly device includes a transfer device, a stator placement fixture, a reducer placement fixture, a lifting assembly, a clamping assembly, a coaxial locking assembly, and a floating pressing assembly. The transfer device is mounted on a base and drives the stator and reducer placement fixtures to move laterally alternately to below the clamping assembly. The lifting assembly is mounted on a frame and drives the clamping assembly, coaxial locking assembly, and floating pressing assembly to move vertically. The clamping assembly clamps the stator on the stator placement fixture. The coaxial locking assembly locks the rotor on the reducer placement fixture, ensuring it is coaxial with the clamped stator and the floating pressing assembly. The floating pressing assembly presses the rotor bearing into the stator bearing chamber. This device ensures coaxiality during the assembly process, prevents rotor misalignment due to magnetic field interference, and ensures stable bearing stress during pressing, avoiding bearing damage.

Description

Technical Field

[0001] This invention relates to the field of new energy motor assembly, specifically to a new energy motor stator and rotor assembly equipment and assembly method. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the performance and production efficiency of new energy motors have become key factors determining the overall vehicle performance and market competitiveness. As a core component of new energy vehicles, the assembly precision and quality control of the new energy motor are crucial. The stator and rotor, as core components of the motor, directly affect the motor's operating efficiency and reliability, and also determine the vehicle's power output and driving range. Therefore, the technological innovation and optimization of new energy motor stator and rotor assembly equipment has become a critical issue that urgently needs to be addressed in the current new energy vehicle manufacturing field.

[0003] In the current field of new energy motor assembly, most stator-rotor assembly equipment adopts a traditional rigid structure. This involves mounting the rotor on the reducer and ensuring that the rotor, stator, and reducer input shaft are on the same axis to guarantee assembly accuracy. However, while this rigid structure meets accuracy requirements to a certain extent, it has many limitations. First, the clamping method is complex, requiring different fixtures to be designed for stators and rotors of different sizes. This not only increases production costs but also makes changing fixtures time-consuming and labor-intensive during actual production, hindering rapid changeovers and severely impacting the flexibility and efficiency of the production line.

[0004] Secondly, because rotors typically possess permanent magnet characteristics, the interaction of the magnetic fields generated between the stator and rotor during assembly can easily cause slight rotor wobble or misalignment. This not only disrupts the original coaxiality but can also cause scratches between the stator and rotor, potentially leading to motor failure in severe cases. Furthermore, when the rotor bearings enter the stator housing bearing chamber, the rigid structure makes them susceptible to abnormal external forces, resulting in damage to the outer ring of the bearing, shortening its service life, and consequently affecting the overall performance and reliability of the motor.

[0005] To address the aforementioned issues, the industry has conducted extensive exploration and research. However, existing stator assembly machines still primarily rely on rigid structures in their clamping, positioning, and alignment mechanisms. While these structures can ensure coaxiality to a certain extent, they still have significant shortcomings in preventing coaxiality misalignment during assembly, preventing rotor bearing damage, and enabling rapid model changeovers. For example, although some equipment employs precise positioning and alignment mechanisms, the lack of flexible adjustment mechanisms makes it difficult to adapt to stators and rotors of different sizes and models, resulting in low changeover efficiency and failing to meet the demands of modern automotive manufacturing for efficient and flexible production.

[0006] Therefore, developing a new type of new energy motor stator and rotor assembly equipment to overcome the shortcomings of existing technologies has become an important task in the current new energy vehicle manufacturing field. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the present invention aims to provide a stator and rotor assembly equipment and method for new energy motors. This assembly equipment has the following advantages: First, it enables rapid model changeover; through flexible design, it can quickly adapt to stators and rotors of different sizes and models, improving the flexibility and efficiency of the production line. Second, it effectively avoids coaxiality misalignment during assembly; by employing advanced coaxial locking components and floating pressing components, it ensures the coaxiality of the stator and rotor during assembly, preventing rotor misalignment and scratches caused by magnetic field interference. Third, it protects the rotor bearings; through optimized design of the floating pressing components, it ensures that the rotor bearings are not affected by abnormal external forces when entering the stator housing bearing chamber, extending the bearing's service life and improving the overall performance and reliability of the motor.

[0008] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0009] On one hand, the present invention provides a new energy motor stator and rotor assembly equipment, including a base and a frame disposed on the base, and further including a transplanting device, a stator placement fixture, a reducer placement fixture, a lifting assembly, a clamping assembly, a coaxial locking assembly, and a floating pressing assembly. The transplanting device is disposed on the base and is used to drive the stator placement fixture and the reducer placement fixture to move laterally alternately to below the clamping assembly. The lifting assembly is disposed on the frame and is used to drive the clamping assembly, the coaxial locking assembly, and the floating pressing assembly to move vertically. The clamping assembly is used to clamp the stator on the stator placement fixture. The coaxial locking assembly is used to lock the rotor on the reducer placement fixture so that it is coaxial with the clamped stator and the floating pressing assembly. The floating pressing assembly is used to press the rotor bearing into the stator bearing chamber.

[0010] As a further optimization of the present invention, the stator placement fixture and the reducer placement fixture are connected and both are disposed on the transfer device. The transfer device includes a base plate, a first slide rail and a first drive unit. The base plate is fixed on the base. The stator placement fixture and the reducer placement fixture are both located on the first slide rail and slidably connected thereto. The first drive unit is disposed on the base plate and is used to drive the stator placement fixture and the reducer placement fixture to slide laterally as a whole.

[0011] As a further optimization of the present invention, the reducer placement fixture includes a slide plate, a positioning platform, and an electric rotating shaft. The positioning platform is disposed on the top of the slide plate, and the electric rotating shaft is disposed on the slide plate and used to drive the positioning platform to rotate. The positioning platform is locked to the slide plate by a pin, and the top of the positioning platform is provided with various positioning pins for use with reducers of different specifications.

[0012] As a further optimization of the present invention, the lifting assembly includes a lifting unit, a connecting frame, a second slide rail, an upper slide table, and a lower slide table. The lifting unit and the second slide rail are both fixed on the frame. The upper slide table and the lower slide table are connected and slidably connected to the second slide rail. The connecting frame is fixed on the upper slide table and drivenly connected to the lifting unit.

[0013] As a further optimization of the present invention, the upper slide and the lower slide are connected by a cylinder assembly. The cylinder assembly includes a cylinder body and a first connecting rod. The cylinder body is fixed to the back of the upper slide by a mounting seat. One end of the first connecting rod is connected to the cylinder body, and the other end is fixed to the back of the lower slide by a mounting seat. A pin hole is provided on the lower slide.

[0014] As a further optimization of the present invention, the clamping assembly is disposed on the sliding platform. The clamping assembly includes a second driving unit, a left clamping plate and a right clamping plate. The left clamping plate and the right clamping plate are slidably connected to a third slide rail fixed on the sliding platform. The second driving unit is fixed on the right clamping plate and driven to be connected to the left clamping plate through a driving rod. The second driving unit is used to drive the left clamping plate and the right clamping plate to move closer to each other.

[0015] As a further optimization of the present invention, the coaxial locking assembly is disposed on the connecting frame. The coaxial locking assembly includes a third driving unit, a second connecting rod, and a core-stabilizing rod. The third driving unit is disposed on the top of the connecting frame and is drivenly connected to the core-stabilizing rod through the second connecting rod. The third driving unit is used to drive the core-stabilizing rod to pass through the connecting frame and insert into the center hole of the rotor shaft.

[0016] As a further optimization of the present invention, the connecting frame is provided with a limiting sleeve through which the centering rod passes.

[0017] As a further optimization of the present invention, the floating press assembly is disposed at the bottom of the connecting frame. The floating press assembly includes a pressure plate, a spring and a guide rod. The pressure plate is installed below the connecting frame through the guide rod, and the spring is sleeved on the guide rod. A through hole is provided in the middle of the pressure plate for the centering rod to pass through.

[0018] On the other hand, the present invention provides a method for assembling a stator and rotor assembly device for a new energy motor, the method comprising:

[0019] The feeding robot places the reducer on the reducer placement fixture and the stator on the stator placement fixture;

[0020] The transplanting device pushes the stator placement fixture to the bottom of the clamping assembly, the lifting assembly drives the clamping assembly to descend to the clamping position, clamps the stator and then lifts it to the standby position;

[0021] The transplanting device pushes the reducer placement fixture to the bottom of the stator. At this time, the reducer, stator, and floating press assembly are coaxial in space.

[0022] The coaxial locking component located at the center of the floating press assembly extends downwards from the core rod and inserts into the center hole of the rotor shaft to complete the coaxial locking.

[0023] The lifting assembly drives the clamping assembly, coaxial locking assembly and floating pressing assembly to descend synchronously. Under the control of the coaxial locking assembly, the rotor on the reducer gradually enters the stator. After reaching the set position, the clamping assembly is locked and then the stator clamp is released.

[0024] After the stator clamp is released, the lifting assembly continues to push the floating pressing assembly down, and the upper end cover of the stator directly contacts the pressure plate of the floating pressing assembly until the rotor bearing is pressed into the stator bearing chamber.

[0025] Compared with the prior art, the present invention brings significant benefits to the equipment and method for assembling stators and rotors of new energy motors, which are described in detail below:

[0026] (1) Through the flexible tooling design and the cooperation of the transfer device, this invention can quickly adapt to stators and rotors of different sizes and models, significantly improving the flexibility and efficiency of the production line. The positioning table and electric rotating shaft design on the tooling for placing the reducer make it simple and quick to change reducers of different specifications, reducing production costs and improving changeover efficiency.

[0027] (2) An advanced coaxial locking assembly is adopted. By inserting the stator rod into the center hole of the rotor shaft, the rotor shaft is precisely positioned and locked, effectively avoiding coaxiality deviation during the assembly process. The synergistic effect of the coaxial locking assembly and the floating press assembly ensures the coaxiality of the stator and rotor during the assembly process, preventing rotor deviation and scratches caused by magnetic field interference.

[0028] (3) The design of the floating press assembly allows the stator to maintain a small amount of free movement when the rotor bearing enters the stator bearing chamber, avoiding the influence of abnormal external forces and thus extending the service life of the bearing. By detecting the compression amount through a displacement sensor, abnormal situations during the press assembly process can be monitored in real time, and timely measures can be taken to prevent bearing damage.

[0029] (4) The assembly equipment of the present invention realizes full automation from feeding, clamping, coaxial locking to bearing pressing, which significantly improves production efficiency. The coordinated work of components such as the transfer device, lifting assembly, and clamping assembly makes the entire assembly process smooth and efficient. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the assembly equipment of the present invention.

[0031] Figure 2 This is a schematic diagram of the coaxial locking assembly and clamping assembly of the present invention.

[0032] Figure 3 This is a schematic diagram of the coaxial locking component of the present invention in the locked state.

[0033] Figure 4 This is a schematic diagram of the floating press assembly of the present invention when it is pressed down.

[0034] Figure 5 This is a schematic diagram of the fixture for placing the speed reducer according to the present invention.

[0035] Figure 6 This is a schematic diagram of the assembly structure of the upper slide and the lower slide of the present invention.

[0036] Reference numerals: 1. Base; 2. Frame; 3. Transplanting device; 31. Base plate; 32. First slide rail; 33. First drive unit; 4. Stator placement fixture; 5. Reducer placement fixture; 51. Slide plate; 52. Positioning table; 53. Electric rotating shaft; 54. Pin; 55. Positioning pin; 6. Lifting assembly; 61. Lifting unit; 62. Connecting frame; 63. Second slide rail; 64. Upper slide table; 65. Lower slide table; 66. Cylinder assembly; 661. Cylinder body; 66 2. First connecting rod; 663. Mounting base; 67. Pin hole; 7. Clamping assembly; 71. Second drive unit; 72. Left clamping plate; 73. Right clamping plate; 74. Third slide rail; 75. Drive rod; 8. Coaxial locking assembly; 81. Third drive unit; 82. Second connecting rod; 83. Stator rod; 84. Limiting sleeve; 9. Floating press assembly; 91. Pressure plate; 92. Spring; 93. Guide rod; 10. Stator; 11. Rotor; 12. Center hole; 13. Rotor bearing. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions of the present invention, preferred embodiments of the present invention are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting the present patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting the present patent.

[0038] This primarily addresses two major issues: damage to rotor bearings during assembly, thereby improving product assembly quality; and how to quickly changeover during production, increasing the redundancy of product types on the production line. For example... Figures 1 to 6 As shown, this invention provides a new energy motor stator and rotor assembly equipment, including a base 1, a frame 2, a transplanting device 3, a stator placement fixture 4, a reducer placement fixture 5, a lifting assembly 6, a clamping assembly 7, a coaxial locking assembly 8, and a floating pressing assembly 9. The frame 2 is mounted on the base 1. The transplanting device 3 is mounted on the base 1 and is used to drive the stator placement fixture 4 and the reducer placement fixture 5 to move laterally to below the clamping assembly 7 in turn. The lifting assembly 6 is mounted on the frame 2 and is used to drive the clamping assembly 7, the coaxial locking assembly 8, and the floating pressing assembly 9 to move vertically. The clamping assembly 7 is used to clamp the stator 10 on the stator placement fixture 4. The coaxial locking assembly 8 is used to lock the rotor 11 on the reducer placement fixture 5 so that it is coaxial with the clamped stator 10 and the floating pressing assembly 9. The floating pressing assembly 9 is used to press the rotor bearing 13 into the stator bearing chamber.

[0039] Understandably, both the reducer placement fixture 5 and the stator placement fixture 4 are mounted on the transfer device 3 and can move left and right. The robot places the reducer and stator 10 onto their respective fixtures. First, the transfer device 3 moves the stator placement fixture 4 laterally to below the clamping assembly 7, making the stator 10, the floating pressing assembly 9, and the coaxial retaining assembly coaxial. After the clamping assembly 7 clamps the stator 10, the transfer device 3 moves the reducer placement fixture 5 laterally to below the clamping assembly 7, making the reducer, stator 10, floating pressing assembly 9, and coaxial retaining assembly coaxial. Under the limiting action of the coaxial retaining assembly, the magnetic field of the rotor 11 attracts the stator 10, preventing shaking caused by the magnetic field of the rotor 11 attracting the stator 10 during assembly. A floating structure is used for pressing when the rotor bearing 13 enters the stator bearing chamber, ensuring precise coaxiality throughout the process. Finally, the rotor bearing 13 enters the stator bearing chamber stably, avoiding collisions during assembly and improving quality.

[0040] In some examples, the stator placement fixture 4 and the reducer placement fixture 5 are connected by a connecting plate and are both mounted on the transfer device 3. The transfer device 3 includes a base plate 31, a first slide rail 32, and a first drive unit 33. The base plate 31 is fixed to the base 1. The stator placement fixture 4 and the reducer placement fixture 5 are both located on and slidably connected to the first slide rail 32. The first drive unit 33 is mounted on the base plate 31 and is used to drive the stator placement fixture 4 and the reducer placement fixture 5 to slide laterally as a whole. The first drive unit 33 is preferably a linear cylinder. The stator placement fixture 4 and the reducer placement fixture 5 can be moved alternately to the underside of the clamping assembly 7 by the linear cylinder, thereby sequentially clamping the stator 10 and pressing the bearing. This achieves automated and assembly line operation, improving production efficiency.

[0041] In some examples, the reducer placement fixture 5 includes a slide plate 51, a positioning platform 52, and an electric rotating shaft 53. The positioning platform 52 is located on top of the slide plate 51, and the electric rotating shaft 53 is mounted on the slide plate 51 and used to drive the positioning platform 52 to rotate. The positioning platform 52 is locked to the slide plate 51 by a pin 54. The top of the positioning platform 52 is provided with various positioning pins 55 for use with reducers of different specifications. This improves the versatility and flexibility of the equipment, reduces the difficulty and time cost of replacing reducers of different specifications, and ensures the precise positioning of the reducer.

[0042] Understandably, in order to automatically adapt to the design of various reducers, different positioning pins 55 are used for different reducers. The positioning table 52 is equipped with an electric rotating shaft 53. When switching between products, it is only necessary to rotate the corresponding angle. After the positioning table 52 is aligned with the axis of the floating pressing assembly 9, the locking pin 54 is automatically locked, and the assembly work can be carried out to achieve fully automatic product change.

[0043] In some examples, the lifting assembly 6 includes a lifting unit 61, a connecting frame 62, a second slide rail 63, an upper slide table 64, and a lower slide table 65. The lifting unit 61 is preferably an electric cylinder. Both the lifting unit 61 and the second slide rail 63 are fixed to the frame 2. The upper slide table 64 and the lower slide table 65 are connected and slidably connected to the second slide rail 63. The connecting frame 62 is fixed to the upper slide table 64 and drivenly connected to the lifting unit 61 via a lifting rod. The structure is stable and can realize both lifting and sliding functions, meeting the processing requirements at different heights and positions.

[0044] Furthermore, the upper slide 64 and the lower slide 65 are connected by a cylinder assembly 66. The cylinder assembly 66 includes a cylinder body 661 and a first connecting rod 662. The cylinder body 661 is fixed to the back of the upper slide 64 by a mounting base 663. One end of the first connecting rod 662 is connected to the cylinder body 661, and the other end is fixed to the back of the lower slide 65 by the mounting base 663. A pin hole 67 is provided on the lower slide 65. The structure is compact and can achieve stable connection and drive.

[0045] Understandably, the upper slide 64 and lower slide 65 are designed as separate units, primarily to separately realize the two processes of downward placement of the stator 10 and floating press fitting. At the same time, it is necessary to ensure that there is no axial deviation in the process of fitting the stator 10 housing into the rotor 11, while allowing for a small adjustment space in the final process of the bearing entering the bearing chamber. Therefore, this mechanism consists of two independent slides. The lower slide 65 is engaged with the clamping assembly 7 and has a locking pin hole 67. The upper slide 64 is engaged with the floating press fitting assembly 9 and connected by the cylinder assembly 66. When unlocked, they can slide up and down simultaneously to realize the function of fitting the stator 10 housing into the rotor 11. After the pin 54 on the lower slide 65 is locked, the driving force continues to be applied downward. The first connecting rod 662 will overcome the cylinder pressure and retract into the cylinder body 661. The upper slide 64 will press down alone to complete the final assembly process.

[0046] In some examples, the clamping assembly 7 is disposed on the lower slide table 65. The clamping assembly 7 includes a second drive unit 71, a left clamping plate 72, and a right clamping plate 73. The second drive unit 71 is preferably a linear cylinder. Both the left clamping plate 72 and the right clamping plate 73 are slidably connected to a third slide rail 74 fixed on the lower slide table 65. Limiters are provided at both ends of the third slide rail 74. The second drive unit 71 is fixed on the right clamping plate 73 and drivenly connected to the left clamping plate 72 through a drive rod 75. The second drive unit 71 is used to drive the left clamping plate 72 and the right clamping plate 73 to move closer together, thereby achieving stable clamping of the stator 10.

[0047] Understandably, the stator 10 is placed on the stator placement fixture 4, and its position is relatively fixed. When the clamping assembly 7 clamps the stator 10, the left clamping plate 72 and the right clamping plate 73 will automatically find their center as they move closer together, and the stator 10 will remain stationary, and its axial position will not be affected by the clamping plates.

[0048] In some examples, the coaxial locking assembly 8 is disposed on the connecting frame 62. The coaxial locking assembly 8 includes a third drive unit 81, a second connecting rod 82, and a centering rod 83. The third drive unit 81 is preferably a linear cylinder. The third drive unit 81 is disposed on the top of the connecting frame 62 and is drivenly connected to the centering rod 83 through the second connecting rod 82. The third drive unit 81 is used to drive the centering rod 83 to pass through the connecting frame 62 and insert into the center hole 12 of the rotor 11 shaft, thereby achieving precise positioning and locking of the rotor 11 shaft.

[0049] It is understandable that the coaxial locking assembly 8 is a core-stabilizing mechanism installed on the lifting assembly 6. The principle is that after the rotor 11 on the reducer reaches the assembly position, it is coaxial with the stator 10 on the clamping assembly 7 in space. At this time, the core-stabilizing rod 83 of the coaxial locking assembly 8 extends out, passes through the hole on the stator bearing chamber, and is inserted into the center hole 12 of the rotor 11 shaft, so that the rotor 11 is locked on the axis, avoiding the magnetic field attracting the stator 10 and causing displacement during the assembly process, and preventing the rotor 11 and stator 10 from being scratched during the process.

[0050] Furthermore, the connecting frame 62 is provided with a limiting sleeve 84 through which the core-setting rod 83 passes. The limiting sleeve 84 further ensures the stability and accuracy of the core-setting rod 83, preventing the core-setting rod 83 from shifting or shaking during the insertion process.

[0051] In some examples, the floating press assembly 9 is located at the bottom of the connecting frame 62. The floating press assembly 9 includes a pressure plate 91, a spring 92 and a guide rod 93. The pressure plate 91 is installed below the connecting frame 62 via the guide rod 93, and the spring 92 is sleeved on the guide rod 93. A through hole is provided in the middle of the pressure plate 91 for the core rod 83 to pass through.

[0052] Understandably, by ensuring the coaxiality of the rotor 11 with the coaxial locking assembly 8, the stator 10, after being released from the clamp, has a slight amount of free movement. Because the floating pressure plate 91 is installed horizontally and fits against the plane of the upper end cover of the stator 10, it will generate compression. Its reaction force will naturally correct the stator 10 to a vertical state, ensuring that the rotor bearing 13 enters the bearing chamber without abnormal external force. The amount of compression can be detected by a displacement sensor. If the compression of the floating pressure plate 91 increases abnormally during the pressing process, or if the compression of each spring 92 is inconsistent, it indicates that the housing correction has failed, the force on the bearing entering the bearing chamber increases, and there is a risk of bearing damage.

[0053] Based on the above structural design, in some examples, the assembly methods of the new energy motor stator and rotor assembly equipment include:

[0054] I. Feeding

[0055] The feeding robot places the reducer on the reducer placement fixture 5 and the stator 10 on the stator placement fixture 4.

[0056] 2. Stator clamping

[0057] The transplanting device 3 pushes the stator placement fixture 4 to the bottom of the clamping assembly 7. The lifting assembly 6 drives the clamping assembly 7 to descend to the clamping position, clamps the stator 10, and then lifts it to the standby position.

[0058] III. Gearbox to assembly position

[0059] The transplanting device 3 pushes the reducer placement fixture 5 to the bottom of the stator 10. At this time, the reducer, stator 10 and floating press assembly 9 are coaxial in space.

[0060] IV. Coaxial Locking

[0061] The coaxial locking component 8, located at the center of the floating press assembly 9, extends downwards with the center rod 83 and inserts into the center hole 12 of the rotor shaft. The depth is detected by the displacement switch (the depth varies depending on the shaft state) to confirm that the coaxial locking is complete.

[0062] V. Assembly

[0063] The upper slide 64 and the lower slide 65 descend as a whole under the push of the electric cylinder. After reaching the position, the lower slide 65 is locked with the pin 54. During this process, the stator 10 is inserted into the rotor 11. This is mainly to ensure that the coil inside the stator 10 is not scratched by the rotor 11. Specifically, the clamping assembly 7 moves downward while holding the stator 10. With the coaxial locking assembly 8 holding it, the rotor 11 on the reducer gradually enters the stator 10. During this process, the rotor bearing 13 is assembled to a position 5mm away from the stator bearing chamber. The entire process is monitored for pressure and displacement. After reaching the set position, the stator 10 housing clamping fixture locks with the pin 54 and then releases the stator 10 housing clamp. At this time, there is a gap (about 5mm) between the stator 10 and the rotor 11. During this process, the coaxial locking fixture ensures that the stator 10 and the rotor 11 do not rub against each other.

[0064] VI. Bearing Installation

[0065] With the sliding platform 65 locked, after the stator 10 clamp is released, the electric cylinder continues to push the floating pressing assembly 9 downward, overcoming the force of the cylinder body 661 to continue pressing downward. This process is the final assembly process, where the rotor bearing 13 enters the stator bearing chamber. During this process, the slight floating of the housing prevents abnormal damage to the outer ring of the bearing from external forces. Specifically: in the final stage of assembly (the rotor bearing 13 is 5mm away from the stator bearing chamber), the clamping assembly 7 releases the stator 10, the floating pressing assembly 9 descends, and the upper end cover of the stator 10 directly contacts the pressure plate 91 of the floating pressing assembly 9. At this time, the stator 10 has a slight self-correcting margin. At the position where the rotor bearing 13 contacts the bearing chamber, the speed is adjusted to a micro-motion state. At this time, the stator 10 is aligned by the floating pressure plate 91, reducing the force on the outer ring of the bearing and avoiding damage caused by the forced pressing of the bearing.

[0066] VII. Completion

[0067] After the monitored pressure displacement detection value is qualified, the clamping component 7, floating pressing component 9, coaxial locking component 8 and other components return to the origin. The transfer device 3 drives the reducer to place the tooling 5 and the stator to place the tooling 4 to the robot's material pick-up and drop-off position, completing the entire action cycle.

[0068] After this equipment was put into use, it achieved automatic model change, reducing the model change time from 20 minutes to 0.5 minutes compared to the original equipment. With the help of the coaxial locking component and the floating pressing component, the first assembly qualification rate increased from 97% to 99.6%.

[0069] In summary, compared with existing technologies, the new energy motor stator and rotor assembly equipment and method of the present invention bring significant benefits in terms of rapid model changeover, coaxiality maintenance, rotor bearing protection, efficient automated production, quality control and reliability improvement, as well as intelligence and maintainability. These advantages make the present invention have broad application prospects and market competitiveness in the field of new energy vehicle manufacturing.

[0070] Based on the description and accompanying drawings of this invention, those skilled in the art can easily manufacture or use the new energy motor stator and rotor assembly equipment and assembly method of this invention, and can produce the positive effects described in this invention.

[0071] Unless otherwise specified, in this invention, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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, the terms used to describe orientation or positional relationships in this invention are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0072] Unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" in this invention 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A new energy motor stator and rotor assembly device, comprising a base (1) and a frame (2) disposed on the base (1), characterized in that, It also includes a transplanting device (3), a stator placement fixture (4), a reducer placement fixture (5), a lifting assembly (6), a clamping assembly (7), a coaxial locking assembly (8), and a floating pressing assembly (9). The transplanting device (3) is set on the base (1) and is used to drive the stator placement fixture (4) and the reducer placement fixture (5) to move laterally to below the clamping assembly (7) in turn. The lifting assembly (6) is set on the frame (2) and is used to drive the clamping assembly (7), the coaxial locking assembly (8), and the floating pressing assembly (9) to move vertically. The clamping assembly (7) is used to clamp the stator (10) on the stator placement fixture (4). The coaxial locking assembly (8) is used to lock the rotor (11) on the reducer placement fixture (5) so that it is coaxial with the clamped stator (10) and the floating pressing assembly (9). The floating pressing assembly (9) is used to press the rotor bearing (13) into the stator bearing chamber. The lifting assembly (6) includes a lifting unit (61), a connecting frame (62), a second slide rail (63), an upper slide (64), and a lower slide (65). The lifting unit (61) and the second slide rail (63) are both fixed on the frame (2). The upper slide (64) and the lower slide (65) are connected and slidably connected to the second slide rail (63). The connecting frame (62) is fixed on the upper slide (64) and drivenly connected to the lifting unit (61). The coaxial locking assembly (8) includes a core-fixing rod (83). The floating press-fitting assembly (9) is located at the bottom of the connecting frame (62). The floating press-fitting assembly (9) includes a pressure plate (91), a spring (92), and a guide rod (93). The pressure plate (91) is installed below the connecting frame (62) through the guide rod (93). The spring (92) is sleeved on the guide rod (93). A through hole is provided in the middle of the pressure plate (91) for the core-fixing rod (83) to pass through.

2. The new energy motor stator and rotor assembly equipment according to claim 1, characterized in that: The stator placement fixture (4) and the reducer placement fixture (5) are connected and both are mounted on the transplanting device (3). The transplanting device (3) includes a base plate (31), a first slide rail (32), and a first drive unit (33). The base plate (31) is fixed on the base (1). The stator placement fixture (4) and the reducer placement fixture (5) are both located on the first slide rail (32) and slidably connected thereto. The first drive unit (33) is mounted on the base plate (31) and is used to drive the stator placement fixture (4) and the reducer placement fixture (5) to slide laterally as a whole.

3. The new energy motor stator and rotor assembly equipment according to claim 2, characterized in that: The reducer placement fixture (5) includes a slide plate (51), a positioning platform (52), and an electric rotating shaft (53). The positioning platform (52) is located on the top of the slide plate (51), and the electric rotating shaft (53) is located on the slide plate (51) and is used to drive the positioning platform (52) to rotate. The positioning platform (52) is locked to the slide plate (51) by a pin (54). The top of the positioning platform (52) is provided with various positioning pins (55) for different specifications of reducers.

4. The new energy motor stator and rotor assembly equipment according to claim 1, characterized in that: The upper slide (64) and the lower slide (65) are connected by a cylinder assembly (66). The cylinder assembly (66) includes a cylinder body (661) and a first connecting rod (662). The cylinder body (661) is fixed to the back of the upper slide (64) by a mounting seat (663). One end of the first connecting rod (662) is connected to the cylinder body (661), and the other end is fixed to the back of the lower slide (65) by a mounting seat (663). A pin hole (67) is provided on the lower slide (65).

5. The new energy motor stator and rotor assembly equipment according to claim 1, characterized in that: The clamping assembly (7) is disposed on the sliding platform (65). The clamping assembly (7) includes a second drive unit (71), a left clamping plate (72) and a right clamping plate (73). The left clamping plate (72) and the right clamping plate (73) are slidably connected to a third slide rail (74) fixed on the sliding platform (65). The second drive unit (71) is fixed on the right clamping plate (73) and driven to the left clamping plate (72) through a drive rod (75). The second drive unit (71) is used to drive the left clamping plate (72) and the right clamping plate (73) to move closer to each other.

6. The new energy motor stator and rotor assembly equipment according to claim 1, characterized in that: The coaxial locking assembly (8) is disposed on the connecting frame (62). The coaxial locking assembly (8) also includes a third driving unit (81) and a second connecting rod (82). The third driving unit (81) is disposed on the top of the connecting frame (62). The third driving unit (81) is driven to connect with the core rod (83) through the second connecting rod (82). The third driving unit (81) is used to drive the core rod (83) to pass through the connecting frame (62) and insert into the center hole (12) of the rotor shaft.

7. The new energy motor stator and rotor assembly equipment according to claim 6, characterized in that: The connecting frame (62) is provided with a limiting sleeve (84) through which the core rod (83) passes.

8. A method for assembling a new energy motor stator and rotor assembly device as described in any one of claims 1-7, characterized in that, The assembly method includes: The feeder robot places the reducer on the reducer placement fixture (5) and places the stator (10) on the stator placement fixture (4); The transplanting device (3) pushes the stator placement fixture (4) to the bottom of the clamping assembly (7), and the lifting assembly (6) drives the clamping assembly (7) to descend to the clamping position, clamp the stator (10) and then lift it to the standby position. The transplanting device (3) pushes the reducer placement fixture (5) to the bottom of the stator (10). At this time, the reducer, stator (10) and floating press assembly (9) are coaxial in space. The coaxial locking assembly (8) located at the center of the floating press assembly (9) extends downwards from the core rod (83) and is inserted into the center hole (12) of the rotor shaft to complete the coaxial locking. The lifting assembly (6) drives the clamping assembly (7), the coaxial locking assembly (8) and the floating pressing assembly (9) to descend synchronously. Under the control of the coaxial locking assembly (8), the rotor (11) on the reducer gradually enters the stator (10). After reaching the set position, the clamping assembly (7) is locked, and then the stator clamp is released. After the stator clamp is released, the lifting assembly (6) continues to push the floating pressing assembly (9) down, and the upper end cover of the stator (10) directly contacts the pressure plate (91) of the floating pressing assembly (9) until the rotor bearing (13) is pressed into the stator bearing chamber.

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