New energy motor stator and rotor assembling equipment and assembling method

Abstract

The invention discloses a new energy motor stator and rotor assembling device and method, and the device comprises a transplanting device, a stator placement tool, a speed reducer placement tool, a lifting assembly, a clamping assembly, a coaxial locking assembly, and a floating press-fitting assembly. The transplanting device is arranged on the base and used for driving the stator containing tool and the speed reducer containing tool to transversely move to the position below the clamping and holding assembly in turn, the lifting assembly is arranged on the rack and used for driving the clamping and holding assembly, the coaxial locking assembly and the floating press-fitting assembly to vertically move, and the clamping and holding assembly is used for clamping a stator on the stator containing tool. The coaxial locking assembly is used for locking a rotor on the speed reducer placing tool so that the rotor can be coaxial with the clamped stator and the floating press-fitting assembly, and the floating press-fitting assembly is used for pressing a rotor bearing into a stator bearing chamber. The equipment guarantees the coaxiality in the assembling process, can prevent the rotor from deviating and damaging the coaxiality due to magnetic field interference, and realizes the stable stress of the bearing in the press-fitting process to avoid the damage of the bearing.

Description

Technical Field

[0001] The present invention relates to the field of new energy motor assembly, and in particular to a new energy motor stator and rotor assembly device and an assembly method. Background Art

[0002] With the rapid development of the new energy vehicle industry, the performance and production efficiency of new energy motors have become key factors in determining the performance and market competitiveness of the entire vehicle. As the core component of new energy vehicles, the assembly accuracy and quality control of new energy motors are crucial. As the core component of the motor, the stator and rotor assembly process not only directly affects the operating efficiency and reliability of the motor, but also determines the power output and cruising range of the entire vehicle. Therefore, the technological innovation and optimization of new energy motor stator and rotor assembly equipment has become an important issue that needs to be urgently addressed in the current new energy vehicle manufacturing field.

[0003] In the existing new energy motor assembly field, most of the stator-rotor assembly equipment adopts the traditional rigid structure, which ensures the assembly accuracy by installing the rotor on the reducer and ensuring that the rotor, stator and reducer input shaft are on the same axis. However, although this rigid structure meets the accuracy requirements to a certain extent, it has many limitations. First of all, the clamping method is complicated, and different fixtures need to be designed for stators and rotors of different sizes. This not only increases the production cost, but also in the actual production process, it is time-consuming and labor-intensive to replace the fixture, and it is difficult to achieve rapid changeover, which seriously affects the flexibility and efficiency of the production line.

[0004] Secondly, since the rotor usually has permanent magnetic properties, during the assembly process, the magnetic field generated between the stator and the rotor interacts with each other, which can easily cause the rotor to shake or deviate slightly, which will not only destroy the original coaxiality, but also cause scratches between the stator and the rotor, and even cause the motor to fail in severe cases. In addition, when the rotor bearing enters the bearing chamber of the stator housing, it is easily affected by abnormal external forces due to the limitation of the rigid structure, resulting in damage to the outer ring of the bearing, shortening the service life of the bearing, and thus affecting the overall performance and reliability of the motor.

[0005] In response to the above problems, the industry has conducted a lot of exploration and research, but the existing stator assembly machines are still mainly based on rigid structures in terms of clamping mechanisms, positioning mechanisms, and centering and holding mechanisms. Although they can ensure coaxiality to a certain extent, they still have obvious deficiencies in avoiding coaxiality deviation during assembly, preventing rotor bearing damage, and achieving rapid changeover. For example, although some equipment uses precise positioning mechanisms and centering and holding mechanisms, due to the lack of flexible adjustment mechanisms, it is difficult to adapt to stators and rotors of different sizes and models, resulting in low changeover efficiency and unable to meet the needs of modern automobile manufacturing for efficient and flexible production.

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

[0007] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a new energy motor stator and rotor assembly device and assembly method. The assembly device has the following advantages: First, it can achieve rapid changeover. Through flexible design, it can quickly adapt to stators and rotors of different sizes and models, thereby improving the flexibility and efficiency of the production line; second, it can effectively avoid coaxiality deviation during the assembly process. By adopting advanced coaxial locking components and floating press-fit components, the coaxiality of the stator and rotor during the assembly process is ensured, and rotor deviation and scratches caused by magnetic field interference are prevented; third, it can protect the rotor bearing. By optimizing the design of the floating press-fit component, it ensures that the rotor bearing is not affected by abnormal external forces when entering the bearing chamber of the stator housing, thereby extending the service life of the bearing and improving the overall performance and reliability of the motor.

[0008] In order to solve the above technical problems, the present invention is implemented by the following technical solutions:

[0009] On the one hand, the present invention provides a new energy motor stator and rotor assembly device, including a base and a frame arranged on the base, and also including a transplanting device, a stator placement tool, a reducer placement tool, a lifting assembly, a clamping assembly, a coaxial locking assembly and a floating press-fitting assembly. The transplanting device is arranged on the base and is used to drive the stator placement tool and the reducer placement tool to move laterally to the bottom of the clamping assembly in turn. The lifting assembly is arranged on the frame and is used to drive the clamping assembly, the coaxial locking assembly and the floating press-fitting assembly to move vertically. The clamping assembly is used to clamp the stator on the stator placement tool, the coaxial locking assembly is used to lock the rotor on the reducer placement tool so that it is coaxial with the clamped stator and the floating press-fitting assembly, and the floating press-fitting assembly is used to press the rotor bearing into the stator bearing chamber.

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

[0011] As a further optimization scheme of the present invention, the reducer placement tooling includes a slide plate, a positioning table and an electric rotating shaft. The positioning table is arranged on the top of the slide plate. The electric rotating shaft is arranged on the slide plate and is used to drive the positioning table to rotate. The positioning table is locked with the slide plate by a latch. A variety of positioning pins are arranged on the top of the positioning table for adapting to reducers of different specifications.

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

[0013] As a further optimization scheme of the present invention, the upper slide and the lower slide are connected by a cylinder assembly, and the cylinder assembly includes a cylinder body and a first connecting rod. The cylinder body is fixed to the back side of the upper slide through a mounting base, one end of the first connecting rod is connected to the cylinder body, and the other end is fixed to the back side of the lower slide through a mounting base; a pin hole is opened on the lower slide.

[0014] As a further optimization scheme of the present invention, the clamping assembly is arranged on the lower slide, and 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 both slidably connected to a third slide rail fixed on the lower slide, and the second driving unit is fixed on the right clamping plate and is drivingly 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 scheme of the present invention, the coaxial locking assembly is arranged on the connecting frame, and the coaxial locking assembly includes a third driving unit, a second connecting rod and a centering rod. The third driving unit is arranged on the top of the connecting frame, and the third driving unit is driven and connected to the centering rod through the second connecting rod. The third driving unit is used to drive the centering rod to pass through the connecting frame and insert into the center hole of the rotor shaft.

[0016] As a further optimization solution of the present invention, a limiting sleeve for the centering rod to pass through is provided on the connecting frame.

[0017] As a further optimization scheme of the present invention, the floating press-fitting assembly is arranged at the bottom of the connecting frame, and the floating press-fitting assembly includes a pressure plate, a spring and a guide rod. The pressure plate is installed under the connecting frame through the guide rod, and the spring is sleeved on the guide rod; a through hole is opened 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 placing tool, and places the stator on the stator placing tool;

[0020] The transplanting device pushes the stator placement tooling to the bottom of the clamping assembly, and 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 tooling to the bottom of the stator. At this time, the reducer, stator, and floating press-fit assembly are in a coaxial state in space;

[0022] The coaxial locking assembly located in the center of the floating press-fit assembly extends the centering rod downward and inserts it 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 press-fit assembly to descend synchronously. Under the hold 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 press-fit assembly down, and the stator upper end cover directly contacts the pressure plate of the floating press-fit assembly until the rotor bearing is pressed into the stator bearing chamber.

[0025] Compared with the prior art, the present invention brings significant beneficial effects in the new energy motor stator and rotor assembly equipment and assembly method, which are specifically described as follows:

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

[0027] (2) The advanced coaxial locking assembly is used to insert the center rod into the center hole of the rotor shaft to achieve precise positioning and locking of the rotor shaft, effectively avoiding coaxial deviation during assembly. The synergy between the coaxial locking assembly and the floating press-fit assembly ensures the coaxiality of the stator and rotor during assembly, preventing rotor deviation and scratches caused by magnetic field interference.

[0028] (3) The design of the floating press-fit 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 conditions during the press-fit 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 the full automation from feeding, clamping, coaxial locking to bearing press-fitting, which significantly improves production efficiency. The coordinated work of the transplanting device, lifting assembly, clamping assembly and other components makes the entire assembly process smooth and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0032] Figure 3 It is a schematic structural diagram of the coaxial locking assembly of the present invention in a locked state.

[0033] Figure 4 It is a schematic structural diagram of the floating press-fit assembly of the present invention when pressed downward.

[0034] Figure 5 It is a structural schematic diagram of the reducer placement tooling of the present invention.

[0035] Figure 6 It 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, bottom plate; 32, first slide rail; 33, first drive unit; 4, stator placement tool; 5, reducer placement tool; 51, slide plate; 52, positioning platform; 53, electric rotating shaft; 54, latch; 55, positioning pin; 6, lifting assembly; 61, lifting unit; 62, connecting frame; 63, second slide rail; 64, upper slide platform; 65, lower slide platform; 66, cylinder assembly; 661, cylinder body; 66 2. First connecting rod; 663. Mounting seat; 67. Pin hole; 7. Clamping assembly; 71. Second driving unit; 72. Left clamping plate; 73. Right clamping plate; 74. Third slide rail; 75. Driving rod; 8. Coaxial locking assembly; 81. Third driving unit; 82. Second connecting rod; 83. Centering rod; 84. Limiting sleeve; 9. Floating press-fit assembly; 91. Press plate; 92. Spring; 93. Guide rod; 10. Stator; 11. Rotor; 12. Center hole; 13. Rotor bearing. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. However, it should be understood that the drawings are only used for exemplary description and cannot be understood as a limitation on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationship described in the drawings is only for exemplary description and cannot be understood as a limitation on this patent.

[0038] The main purpose is to solve two major problems: the damage of the rotor bearing during the assembly process to improve the product assembly quality; how to quickly change the model during the production process to improve the redundancy of the production line products. Figures 1 to 6 As shown, the present invention provides a new energy motor stator and rotor assembly device, including a base 1, a frame 2, a transplanting device 3, a stator placement tool 4, a reducer placement tool 5, a lifting assembly 6, a clamping assembly 7, a coaxial locking assembly 8 and a floating press assembly 9. The frame 2 is arranged on the base 1, the transplanting device 3 is arranged on the base 1 and is used to drive the stator placement tool 4 and the reducer placement tool 5 to move horizontally to the bottom of the clamping assembly 7 in turn, the lifting assembly 6 is arranged on the frame 2 and is used to drive the clamping assembly 7, the coaxial locking assembly 8 and the floating press assembly 9 to move vertically, the clamping assembly 7 is used to clamp the stator 10 on the stator placement tool 4, the coaxial locking assembly 8 is used to lock the rotor 11 on the reducer placement tool 5 so that it is coaxial with the clamped stator 10 and the floating press assembly 9, and the floating press assembly 9 is used to press the rotor bearing 13 into the stator bearing chamber.

[0039] It can be understood that the reducer placement tool 5 and the stator placement tool 4 are both installed on the transplanting device 3 and can be moved left and right. The reducer and stator 10 are placed on their respective tools by robots. First, the stator placement tool 4 is moved horizontally to the bottom of the clamping assembly 7 by the transplanting device 3, so that the stator 10, the floating press-fitting assembly 9 and the coaxial holding assembly are coaxial. After the clamping assembly 7 clamps the stator 10, the reducer placement tool 5 is moved horizontally to the bottom of the clamping assembly 7 by the transplanting device 3, so that the reducer, the stator 10, the floating press-fitting assembly 9 and the coaxial holding assembly are coaxial. Under the limiting effect of the coaxial holding assembly, the shaking caused by the magnetic field of the rotor 11 attracting the stator 10 during the assembly process is avoided. When the rotor bearing 13 enters the stator bearing chamber, a floating structure is used for press-fitting to ensure accurate coaxiality throughout the process. Finally, the rotor bearing 13 stably enters the stator bearing chamber to avoid bumps during the assembly process and improve the quality.

[0040] In some examples, the stator placement tool 4 and the reducer placement tool 5 are connected by a connecting plate, and are both arranged on the transplanting device 3. The transplanting device 3 includes a bottom plate 31, a first slide rail 32 and a first drive unit 33. The bottom plate 31 is fixed on the base 1. The stator placement tool 4 and the reducer placement tool 5 are both located on the first slide rail 32 and slidably connected thereto. The first drive unit 33 is arranged on the bottom plate 31 and is used to drive the stator placement tool 4 and the reducer placement tool 5 to slide laterally as a whole. The first drive unit 33 can preferably be a linear cylinder. The stator placement tool 4 and the reducer placement tool 5 can be moved to the bottom of the clamping assembly 7 in turn by the linear cylinder, so as to realize the clamping of the stator 10 and the press-fitting of the bearing in turn. The operation mode of automation and assembly line is realized, and the production efficiency is improved.

[0041] In some examples, the reducer placement tool 5 includes a slide plate 51, a positioning platform 52 and an electric rotating shaft 53. The positioning platform 52 is arranged on the top of the slide plate 51. The electric rotating shaft 53 is arranged on the slide plate 51 and is used to drive the positioning platform 52 to rotate. The positioning platform 52 is locked with the slide plate 51 through a latch 54. A variety of positioning pins 55 for different specifications of reducers are arranged on the top of the positioning platform 52. The versatility and flexibility of the equipment are improved, the difficulty and time cost of replacing reducers of different specifications are reduced, and the accurate positioning of the reducer is ensured.

[0042] It can be understood that in order to automatically adapt to the design of various reducers, different positioning pins 55 are provided for different reducers, and an electric rotating shaft 53 is provided in the positioning platform 52. When switching types, it only needs to rotate the corresponding angle. After the positioning platform 52 is aligned with the axis of the floating press-fitting component 9, the pin 54 is automatically locked, and the assembly work can be carried out, realizing fully automatic type 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 64 and a lower slide 65. The lifting unit 61 may preferably be an electric cylinder. 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 are both slidably connected to the second slide rail 63, and the connecting frame 62 is fixed on the upper slide 64 and is driven and connected to the lifting unit 61 through a lifting rod. The structure is stable and can realize lifting and sliding functions, meeting the processing requirements of different heights and positions.

[0044] Furthermore, the upper slide 64 and the lower slide 65 are connected via a cylinder assembly 66, which 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 via 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 via the mounting seat 663. A pin hole 67 is provided on the lower slide 65. The structure is compact and can achieve stable connection and drive.

[0045] It can be understood that the upper slide 64 and the lower slide 65 are designed in a split type, mainly to realize the two processes of downward placement and floating press-fitting of the stator 10 respectively, while keeping the stator 10 shell without axial deviation in the process of inserting into the rotor 11, and allowing a small adjustment space for the stator 10 shell in the process of the final bearing entering the bearing chamber. Therefore, this mechanism assembly is composed of two independent slides. The lower one is the lower slide 65 that cooperates with the clamping assembly 7 and has a latch hole 67 to lock the position, and the upper one is the upper slide 64 that cooperates with the floating press-fitting assembly 9. They are connected by the cylinder assembly 66 and can slide up and down at the same time without locking, so as to realize the function of inserting the stator 10 shell into the rotor 11. After the latch 54 on the lower slide 65 is locked, the driving force continues to be given downward, and the first connecting rod 662 will overcome the cylinder pressure and retract into the cylinder body 661, and the upper slide 64 will be pressed down alone to complete the final assembly process.

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

[0047] It is understandable that the stator 10 is placed on the stator placement tool 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 the center in the process of approaching each other, and the stator 10 remains stationary, and its axis position will not be affected by the clamping plate.

[0048] In some examples, the coaxial locking assembly 8 is disposed on the connecting frame 62, and the coaxial locking assembly 8 includes a third driving unit 81, a second connecting rod 82 and a centering rod 83. The third driving unit 81 may preferably be a linear cylinder. The third driving unit 81 is disposed on the top of the connecting frame 62, and the third driving unit 81 is drivingly connected to the centering rod 83 through the second connecting rod 82. The third driving 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 realizing accurate positioning and locking of the rotor 11 shaft.

[0049] It can be understood that the coaxial locking assembly 8 is a set of centering mechanisms installed on the lifting assembly 6. The principle is that after the rotor 11 on the reducer reaches the assembly position, it is spatially coaxial with the stator 10 on the clamping assembly 7. At this time, the centering 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 it to deviate during the assembly process, thereby preventing scratches on the rotor 11 and the stator 10 during this process.

[0050] Furthermore, a limiting sleeve 84 for the centering rod 83 to pass through is provided on the connection frame 62. The setting of the limiting sleeve 84 further ensures the stability and accuracy of the centering rod 83 and prevents the centering rod 83 from deflecting or shaking during the insertion process.

[0051] In some examples, the floating press-fitting assembly 9 is arranged at the bottom of the connecting frame 62, and 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 under the connecting frame 62 through the guide rod 93, and the spring 92 is sleeved on the guide rod 93; a through hole is opened in the middle of the pressure plate 91 for the centering rod 83 to pass through.

[0052] It is understandable that, by using the coaxial locking assembly 8 to ensure the coaxiality of the rotor 11, there is a small margin of free movement in the stator 10 after the clamping is released. Since the floating pressure plate 91 is installed in a horizontal state and fits the plane of the upper end cover of the stator 10, compression will occur, and 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 compression amount can be detected by a displacement sensor. If the compression amount of the floating pressure plate 91 increases abnormally during the press-fitting process, or the compression amounts of the springs 92 are inconsistent, it means that the housing correction fails, the external force of 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 method of the stator and rotor assembly equipment of the new energy motor includes:

[0054] 1. Loading

[0055] The feed robot places the reducer on the reducer placement tool 5 , and places the stator 10 on the stator placement tool 4 .

[0056] 2. Stator clamping

[0057] The transplanting device 3 pushes the stator placement tool 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, clamps the stator 10, and then lifts it to the standby position.

[0058] 3. Reducer to the assembly position

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

[0060] 4. Coaxial Locking

[0061] The coaxial locking assembly 8 at the center of the floating press-fit assembly 9 extends the centering rod 83 downward and inserts it into the center hole 12 of the rotor shaft. The depth is detected by the displacement switch (the depth varies in different shaft states) to confirm that the coaxial locking is completed.

[0062] 5. Combined Packaging

[0063] The upper slide 64 and the lower slide 65 are pushed by the electric cylinder and lowered as a whole. After they are in place, the latch 54 is used to lock the lower slide 65. In this process, the stator 10 is inserted downward into the rotor 11, mainly to ensure that the coil in the stator 10 is not scratched by the rotor 11. The specific process is that the clamping component 7 runs downward while holding the stator 10. Under the maintenance of the coaxial locking component 8, the rotor 11 on the reducer begins to gradually enter the stator 10. In this process, the rotor bearing 13 is assembled to a position 5mm away from the stator bearing chamber. The whole process is monitored by pressure and displacement. After reaching the set position, the stator 10 shell clamping tooling completes the locking of the latch 54, and then releases the stator 10 shell clamping. At this time, there is a gap (about 5mm) between the stator 10 and the rotor 11. In this process, the coaxial locking tooling ensures that the stator 10 and the rotor 11 are not scratched during this process.

[0064] 6. Bearings entering the room

[0065] The lower slide 65 is in a locked state. After the stator 10 clamp is released, the electric cylinder continues to push the floating press-fit assembly 9 downward, overcomes the force of the cylinder body 661 and continues to complete the press-fit. This process is the final assembly process. The rotor bearing 13 enters the stator bearing chamber. In this process, the outer ring of the bearing is prevented from being damaged by external forces by the slight floating of the shell. Specifically, in the final stage of assembly (the rotor bearing 13 is 5mm away from the stator bearing chamber), the clamp assembly 7 releases the stator 10, the floating press-fit assembly 9 descends, and the upper end cover of the stator 10 directly contacts the pressure plate 91 of the floating press-fit assembly 9. At this time, the stator 10 has a slight self-correction 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 to reduce the force on the outer ring of the bearing and avoid damage caused by forced pressing of the bearing.

[0066] 7. Completion

[0067] After the monitoring pressure displacement detection value is qualified, the clamping assembly 7, floating press assembly 9, coaxial locking assembly 8 and other components return to the origin, and the transplanting device 3 drives the reducer placement tooling 5 and the stator placement tooling 4 to the robot's material picking and placing position to complete the entire action cycle.

[0068] After this equipment was put into use, automatic model change was realized. Compared with the original equipment, the model change time was reduced from 20 minutes to 0.5 minutes. Under the action of coaxial locking components and floating press-fit components, the one-time assembly qualification rate was increased from 97% to 99.6%.

[0069] In summary, compared with the prior art, the new energy motor stator and rotor assembly equipment and assembly method of the present invention have brought significant beneficial effects in terms of rapid model change, coaxiality maintenance, rotor bearing protection, efficient and 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] According to the description and drawings of the present invention, those skilled in the art can easily manufacture or use the stator-rotor assembly device and assembly method of the new energy motor of the present invention, and can produce the positive effects recorded in the present invention.

[0071] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in conjunction with the drawings and according to specific circumstances.

[0072] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment 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) arranged on the base (1), characterized in that: It also comprises a transplanting device (3), a stator placement tool (4), a reducer placement tool (5), a lifting assembly (6), a clamping assembly (7), a coaxial locking assembly (8) and a floating press-fitting assembly (9). The transplanting device (3) is arranged on the base (1) and is used to drive the stator placement tool (4) and the reducer placement tool (5) to move horizontally to the bottom of the clamping assembly (7) in turn. The lifting assembly (6) is arranged on the frame (2) and is used to drive the clamping assembly (7), the coaxial locking assembly (8) and the floating press-fitting assembly (9) to move vertically. The clamping assembly (7) is used to clamp the stator (10) on the stator placement tool (4). The coaxial locking assembly (8) is used to lock the rotor (11) on the reducer placement tool (5) so that it is coaxial with the clamped stator (10) and the floating press-fitting assembly (9). The floating press-fitting assembly (9) is used to press the rotor bearing (13) into the stator bearing chamber.

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

3. The stator and rotor assembly equipment for new energy motors according to claim 2 is characterized in that: The reducer placement tool (5) comprises a slide plate (51), a positioning platform (52) and an electric rotating shaft (53); the positioning platform (52) is arranged on the top of the slide plate (51); the electric rotating shaft (53) is arranged on the slide plate (51) and is used to drive the positioning platform (52) to rotate; the positioning platform (52) is locked with the slide plate (51) by a latch (54); and a plurality of positioning pins (55) suitable for reducers of different specifications are arranged on the top of the positioning platform (52).

4. The stator and rotor assembly equipment for new energy motors according to claim 1 is characterized in that: The lifting assembly (6) comprises a lifting unit (61), a connecting frame (62), a second slide rail (63), an upper slide platform (64) and a lower slide platform (65); the lifting unit (61) and the second slide rail (63) are both fixed on the frame (2); the upper slide platform (64) and the lower slide platform (65) are connected and are both slidably connected to the second slide rail (63); the connecting frame (62) is fixed on the upper slide platform (64) and is drivingly connected to the lifting unit (61).

5. The stator and rotor assembly equipment for new energy motors according to claim 4 is characterized in that: The upper slide (64) and the lower slide (65) are connected via a cylinder assembly (66), the cylinder assembly (66) comprising a cylinder body (661) and a first connecting rod (662), the cylinder body (661) being fixed to the back side of the upper slide (64) via a mounting seat (663), one end of the first connecting rod (662) being connected to the cylinder body (661), and the other end being fixed to the back side of the lower slide (65) via a mounting seat (663); a pin hole (67) is provided on the lower slide (65).

6. The new energy motor stator and rotor assembly equipment according to claim 4 is characterized in that: The clamping assembly (7) is arranged on the lower slide platform (65), and the clamping assembly (7) comprises a second driving 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 both slidably connected to a third slide rail (74) fixed on the lower slide platform (65). The second driving unit (71) is fixed on the right clamping plate (73) and is drivingly connected to the left clamping plate (72) through a driving rod (75). The second driving unit (71) is used to drive the left clamping plate (72) and the right clamping plate (73) to move closer to each other.

7. The stator and rotor assembly equipment for new energy motors according to claim 4 is characterized in that: The coaxial locking assembly (8) is arranged on the connecting frame (62), and the coaxial locking assembly (8) comprises a third driving unit (81), a second connecting rod (82) and a centering rod (83). The third driving unit (81) is arranged on the top of the connecting frame (62), and the third driving unit (81) is connected to the centering rod (83) through the second connecting rod (82). The third driving unit (81) is used to drive the centering rod (83) to pass through the connecting frame (62) and be inserted into the center hole (12) of the rotor shaft.

8. The stator and rotor assembly equipment for new energy motors according to claim 7 is characterized in that: The connection frame (62) is provided with a limiting sleeve (84) for the centering rod (83) to pass through.

9. The stator and rotor assembly equipment for new energy motors according to claim 4 is characterized in that: The floating press-fitting assembly (9) is arranged at the bottom of the connecting frame (62), and the floating press-fitting assembly (9) comprises a pressing plate (91), a spring (92) and a guide rod (93). The pressing plate (91) is installed below the connecting frame (62) through the guide rod (93), and the spring (92) is sleeved on the guide rod (93); a through hole is opened in the middle of the pressing plate (91) for the centering rod (83) to pass through.

10. A method for assembling a stator and rotor assembly device for a new energy motor according to any one of claims 1 to 9, characterized in that: The assembly method comprises: The feeding robot places the reducer on the reducer placement tool (5), and places the stator (10) on the stator placement tool (4); The transplanting device (3) pushes the stator placement tool (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, clamps the stator (10), and then lifts it to the standby position; The transplanting device (3) pushes the reducer placement tool (5) to the bottom of the stator (10), and at this time, the reducer, the stator (10) and the floating press-fit assembly (9) are in a coaxial state in space; The coaxial locking assembly (8) located at the center of the floating press-fit assembly (9) extends a centering rod (83) downward and inserts it 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 press-fitting assembly (9) to descend synchronously. Under the holding 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 press assembly (9) downward, and the upper end cover of the stator (10) directly contacts the pressure plate (91) of the floating press assembly (9) until the rotor bearing (13) is pressed into the stator bearing chamber.

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