A precision motor assembly device

Abstract

The application discloses a precision motor assembling device and relates to the technical field of motor assembling. The precision motor assembling device comprises an assembling table, a fastening assembly arranged in the assembling table, a cavity arranged in the assembling table, a shaft rod rotatably connected in the cavity, a driving disc fixedly connected to the outer surface of the shaft rod, three arc-shaped grooves arranged on the driving disc in a ring shape and at equal intervals, guide rods slidably connected in the three arc-shaped grooves, concave rods fixedly connected to the top ends of the three guide rods, and rubber pads one fixedly connected to the outward ends of the three concave rods. The three concave rods are used for fixing the inner wall of a motor shell, so that the additional stress applied to the motor shell by bolts in the tightening process can be reduced. The stress may cause the motor shell to deform, and gaps may occur between a stator core and the motor shell. In addition, the stator core and the motor shell are centered to the same axis, so that the central axis of the stator core and the central axis of the motor shell are completely coincident, and the assembling precision can be kept at a high level.

Description

Technical Field

[0001] This invention relates to the field of motor assembly technology, and more specifically, to a precision motor assembly device. Background Technology

[0002] With the continuous advancement of technology, the performance and quality requirements of motors used in new energy vehicles are also increasing. The assembly quality of new energy vehicle motors directly affects their performance and service life, and traditional assembly methods for new energy vehicle motors have many problems.

[0003] In the current assembly process of new energy vehicle motor housings and stators, the housing is mostly fixed manually by tightening bolts, and then the stator is assembled by manually inserting it into the housing. This is not only inefficient, but it is also difficult for humans to accurately align the stator and housing. In addition, traditional assembly equipment has limitations in adapting to the assembly of new energy vehicle motors of different specifications. When different models and sizes of motors need to be assembled, a lot of adjustments to the assembly equipment or replacement of some parts are often required, which not only consumes time and manpower, but also increases production costs.

[0004] To address the aforementioned problems, a precision motor assembly device is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, a precision motor assembly device is provided. This technical solution solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention can be implemented using the following technical solutions:

[0007] This invention provides a precision motor assembly device, including an assembly table and fastening components disposed within the assembly table:

[0008] The fastening assembly includes a cavity opened in the assembly table, a shaft is rotatably connected in the cavity, a drive plate is fixedly connected to the outer surface of the shaft, three arc-shaped grooves are equidistantly arranged in annular pattern on the drive plate, a guide rod is slidably connected in each of the three arc-shaped grooves, a concave rod is fixedly connected to the top of each of the three guide rods, and a rubber pad is fixedly connected to the outward end of each of the three concave rods.

[0009] Furthermore, three sliding grooves are provided on the assembly table corresponding to the position of the arc-shaped groove. The three sliding grooves are slidably connected to the three concave rods, and the drive disk is set in the cavity.

[0010] Furthermore, a support assembly is slidably connected to the concave rod. The support assembly includes a movable groove on the concave rod, with inclined grooves on both sides of the inner wall of the movable groove. A vertical groove is provided at the bottom end of the inclined grooves on both sides of the movable groove. Sliding rods are slidably connected to the inner walls of both inclined grooves. An L-shaped rod is fixedly connected to one end of the two sliding rods. An L-shaped support plate is fixedly connected to the top of the L-shaped rod. A rubber pad is fixedly connected to the outer surface of the L-shaped support plate.

[0011] Furthermore, the L-shaped rod matches the movable groove, the inclined groove is connected to the vertical groove, and the two sliding rods are slidably connected between the inclined groove and the vertical groove, respectively.

[0012] Furthermore, a drive assembly is provided on the assembly table. The drive assembly includes a servo motor fixedly connected inside the cavity, and a hydraulic rod is installed on the assembly table. A rubber disc is fixedly connected to the bottom end of the hydraulic rod.

[0013] Furthermore, the drive end of the servo motor is fixedly connected to the shaft, and the hydraulic rod is positioned directly above the cavity.

[0014] Furthermore, a limiting component is provided on the outer surface of the L-shaped rod. The limiting component includes connecting rods that are inserted into the outer surfaces of the three L-shaped rods. An arc-shaped plate is inserted into the outward end of each of the three connecting rods, and the wiping tape is adhered to the outer surfaces of the three arc-shaped plates.

[0015] Furthermore, a slider is slidably connected inside the movable groove, and a spring is fixedly connected to the opposite end of the slider and the movable groove. The top of the slider abuts against the bottom of the L-shaped rod.

[0016] As described above, the features and advantages of the precision motor assembly device of the present invention are as follows:

[0017] Compared to the traditional bolt fixing method, this reduces the additional stress applied to the housing during bolt tightening, which can cause housing deformation or unnecessary pressure on the internal structure. Furthermore, this internal wall support fixing method can meet the assembly needs of various sizes and models of new energy vehicle motors, eliminating the need for frequent changes in assembly equipment or adjustments to the production line, thus shortening production changeover time and improving production efficiency. This fixing method can also be applied to the stator and rotor, allowing for rapid fixing and correction when the rotor and stator are assembled into the housing. This reduces the time spent repeatedly adjusting positions during assembly, improving assembly consistency and repeatability, thereby ensuring product quality stability.

[0018] By aligning the stator core and the housing to be coaxial, the central axis of the stator core can be completely aligned with the central axis of the housing. This ensures that the precision of each assembly is maintained at a high level. In addition, when the motor of a new energy vehicle is in use, it can also ensure that the rotor can rotate smoothly during operation, reducing vibration and noise.

[0019] By attaching a wiping tape to the bottom of the outer surface of the stator core, the wiping tape can prevent the outer surface of the stator core from shaking due to magnetic force when it is installed into the housing, thus avoiding collision between the stator core and the inner wall of the housing. This serves to correct the stator during the assembly process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the housing assembly of the precision motor assembly device shown in this invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the precision motor assembly device shown in this invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the assembly table of the precision motor assembly device shown in this invention.

[0023] Figure 4 This is a schematic diagram of the fastening assembly structure of the precision motor assembly device shown in this invention;

[0024] Figure 5 This is a schematic diagram of the concave rod of the precision motor assembly device shown in this invention;

[0025] Figure 6 for Figure 5 Enlarged view of part A in the middle.

[0026] In this invention, the reference numerals are: 1, assembly table;

[0027] Fastening components: 21. Cavity; 22. Shaft; 23. Drive disc; 24. Arc groove; 25. Guide rod; 26. Concave rod; 27. Rubber pad one; 28. Sliding groove;

[0028] Support components: 31. Movable groove; 32. Inclined groove; 33. Vertical groove; 34. Slide rod; 35. L-shaped rod; 36. L-shaped support plate; 37. Rubber pad II;

[0029] Drive components: 41. Servo motor; 42. Hydraulic rod; 43. Rubber disc;

[0030] Limiting components: 51. Connecting rod; 52. Arc plate; 53. Wiping belt; 54. Slider; 55. Spring. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] See 1~ Figure 6 As shown in the figure, an embodiment of the present invention is provided, and a precision motor assembly device will be described in detail below: it includes an assembly table 1, and fastening components are provided within the assembly table 1.

[0033] The fastening assembly includes a cavity 21 opened in the assembly table 1. A shaft 22 is rotatably connected in the cavity 21. A drive disk 23 is fixedly connected to the outer surface of the shaft 22. Three arc-shaped grooves 24 are equidistantly arranged in annular pattern on the drive disk 23. Guide rods 25 are slidably connected in each of the three arc-shaped grooves 24. A concave rod 26 is fixedly connected to the top of each of the three guide rods 25. A rubber pad 27 is fixedly connected to the outward end of each of the three concave rods 26. The concave rods 26 and the rubber pad 27 are set in the reserved space between the housing and the end cover. In this way, when the housing is assembled with the stator, the concave rods 26 and the rubber pad 27 will not affect the stator assembly space.

[0034] Furthermore, three sliding grooves 28 are provided on the assembly table 1 at the position corresponding to the arc groove 24. The three sliding grooves 28 are slidably connected to the three concave rods 26, and the drive disk 23 is set in the cavity 21.

[0035] Furthermore, a support assembly is slidably connected to the concave rod 26. The support assembly includes a movable groove 31 opened on the concave rod 26. Inclined grooves 32 are opened on both sides of the inner wall of the movable groove 31. Vertical grooves 33 are opened at the bottom ends of the inclined grooves 32 on both sides of the movable groove 31. Sliding rods 34 are slidably connected to the inner walls of both inclined grooves 32. An L-shaped rod 35 is fixedly connected to the opposite ends of the two sliding rods 34. An L-shaped support plate 36 is fixedly connected to the top end of the L-shaped rod 35. A second rubber pad 37 is fixedly connected to the outer surface of the L-shaped support plate 36. Both the first rubber pad 27 and the second rubber pad 37 are made of durable materials. The heat-sensitive material, through rubber pads 237 and 27, can prevent scratches from appearing on the inner walls of the stator core and the inner walls of the housing during the process of straightening and fixing the stator core and the housing. This ensures the flatness of the inner walls of the stator core and the housing, preventing uneven air gaps between the stator core and the rotor, which would increase the magnetic resistance of the motor and reduce its efficiency. In addition, scratches may cause uneven contact between the stator core and the inner wall of the housing, resulting in additional vibration and noise during motor operation. Scratches can also damage the insulating coating on the inner walls of the stator core and the housing, thereby reducing the insulation performance.

[0036] Furthermore, the L-shaped rod 35 is matched with the movable groove 31, the inclined groove 32 is connected to the vertical groove 33, and the two sliding rods 34 are slidably connected between the inclined groove 32 and the vertical groove 33 respectively.

[0037] Furthermore, a drive assembly is provided on the assembly table 1. The drive assembly includes a servo motor 41 fixedly connected inside the cavity 21. A hydraulic rod 42 is installed on the assembly table 1, and a rubber disc 43 is fixedly connected to the bottom end of the hydraulic rod 42.

[0038] Furthermore, the drive end of the servo motor 41 is fixedly connected to the shaft 22, and the hydraulic rod 42 is positioned directly above the cavity 21.

[0039] Furthermore, a limiting component is provided on the outer surface of the L-shaped rod 35. The limiting component includes connecting rods 51 that are inserted into the outer surfaces of the three L-shaped rods 35. An arc-shaped plate 52 is inserted into the outward end of each of the three connecting rods 51. A wiping strip 53 is adhered to the outer surface of the three arc-shaped plates 52. The material of the wiping strip 53 is heat-resistant rubber. This makes the wiping strip 53 more malleable and able to expand as the connecting rods 51 and arc-shaped plates 52 move. When fastening to housings of different sizes, the size of the stator installed will also change. Since the connecting rods 51 support insertion and the wiping strip 53 supports adhesion, it is possible to quickly replace the connecting rods 51 of appropriate length and the wiping strip 53 of appropriate size to match stators of different sizes.

[0040] Furthermore, a slider 54 is slidably connected inside the movable groove 31. A spring 55 is fixedly connected to the end of the slider 54 opposite to the movable groove 31. The top of the slider 54 abuts against the bottom of the L-shaped rod 35.

[0041] Based on the above embodiments, the following is the complete working process and working principle of the above embodiments:

[0042] The working state is as follows: First, the heated housing to be assembled is placed on the assembly table 1, and the three concave rods 26 are covered by the housing.

[0043] The servo motor 41 is further activated, causing the shaft 22 to rotate. At this time, the drive disk 23, fixedly connected to the outer surface of the shaft 22, will rotate around the shaft 22. During rotation, the inner wall of the drive disk 23 will abut against the outer surface of the guide rod 25. Since the concave rod 26 slides within the sliding groove 28, when the guide rod 25 is abutted by the arc groove 24, it will carry the concave rod 26 outwards within the sliding groove 28 around the shaft 22. When the rubber pads 27 at the ends of the three concave rods 26 abut against the inner wall of the housing, the housing covering the three concave rods 26 will automatically adjust to a position centered on the shaft 22. Simultaneously, the three concave rods 26 can also... Compared to traditional bolt-fixing methods, this internal wall support method reduces the additional stress exerted on the housing during bolt tightening, which can lead to housing deformation or unnecessary pressure on the internal structure. Furthermore, this method can accommodate motors of various sizes and models without frequent equipment changes or production line adjustments, thus shortening changeover time and improving efficiency. This method can also be applied to the stator and rotor, allowing for rapid fixation and alignment when they are assembled into the housing. This reduces the time spent repeatedly adjusting positions during assembly, improving consistency and repeatability, and ultimately ensuring product quality stability.

[0044] After the concave rod 26 fixes and corrects the housing, the L-shaped rod 35 and L-shaped support plate 36 on the concave rod 26 will also open to a certain distance with the shaft 22 as the center. At this time, the stator core to be installed is placed on the three L-shaped support plates 36, and then the hydraulic rod 42 is activated to control the rubber disc 43 to descend and press the top of the stator core. During the pressing process, the stator core will exert a downward force on the L-shaped support plate 36 and L-shaped rod 35, so that the L-shaped rod 35 slides outward along the trajectory of the inclined groove 32 with the shaft 22 as the center through the slide rod 34. In this way, the three L-shaped support plates 36, with the rubber pads 37 covering their outer surfaces, will abut against the inner wall of the stator core. After contact, the L-shaped rod 35 will follow the slide rod 34 into the interior of the vertical groove 33 and descend along the movable groove 31 inside the concave rod 26. At this time, the stator core on the three L-shaped support plates 36 will be fixed. At the same time, the three L-shaped support plates 36 can fix the stator core and position it, so that the center point of the stator core and the housing are in the same position. Quick fixing and correction can reduce the error caused by human operation. At the same time, this kind of centering of the stator core and the housing to the coaxiality can ensure that the central axis of the stator core and the central axis of the housing are completely coincident, which can ensure that the accuracy of each assembly is maintained at a high level. In addition, when the motor is in use, it can also ensure that the rotor can rotate smoothly during operation, reducing vibration and noise.

[0045] During the process of the slide bar 34 moving from the inclined groove 32 to the vertical groove 33, the L-shaped bar 35 will slide along the trajectory of the inclined groove 32 towards the inner wall of the housing. At this time, the three connecting rods 51 outside the three L-shaped bars 35 will move accordingly. At this time, the three arc plates 52 will open outward with the shaft 22 as the center, so that the wiping strip 53, which is fixedly connected to the outer surface of the three arc plates 52 away from the end of the connecting rod 51, will extend. Then, taking advantage of the strong plasticity of the wiping strip 53, the wiping strip 53 can be tied to the bottom of the outer surface of the stator core. In this way, during the process of the stator core being embedded into the housing, the limiting and blocking effect of the wiping strip 53 can prevent the outer surface of the stator core from shaking due to magnetic force when it is installed into the housing, thus avoiding the collision between the stator core and the inner wall of the housing.

[0046] When the stator core is pressed down, the bottom of the L-shaped rod 35 will also abut against the slider 54, causing the slider 54 to move down and compress the spring 55. After the stator core and the housing are assembled, the heated housing is cooled. Utilizing the principle of thermal expansion and contraction of heated metal, the stator core is more easily assembled into the housing. The cooled housing will fit more tightly with the stator core. Then, by starting the servo motor 41, the shaft 22 and the drive disk 23 are reversed, and the inner wall of the arc-shaped groove 24 will... The outer surface of the guide rod 25 is pressed against the guide rod 25, causing the concave rod 26 to move towards the center along the trajectory of the sliding groove 28 with the shaft 22 as the center. In this way, the concave rod 26 releases its positioning on the housing. At the same time, the L-shaped support plate 36 on the inner wall of the stator core inside the housing will also stop fixing the stator core. Then, the base of the housing is installed with the housing. After the installation is completed, the assembled housing and stator core are removed. The compressed spring 55 will push the L-shaped rod 35, the slide rod 34 and the L-shaped support plate 36 to reset.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision motor assembly device, comprising an assembly table (1), characterized in that, Fastening components installed inside the assembly table (1); The fastening assembly includes a cavity (21) opened in the assembly table (1), a shaft (22) is rotatably connected in the cavity (21), a drive disk (23) is fixedly connected to the outer surface of the shaft (22), three arc-shaped grooves (24) are provided on the drive disk (23) at equal intervals, a guide rod (25) is slidably connected in each of the three arc-shaped grooves (24), a concave rod (26) is fixedly connected to the top of each of the three guide rods (25), and a rubber pad (27) is fixedly connected to the outward end of each of the three concave rods (26). A support assembly is slidably connected to the concave rod (26). The support assembly includes a movable groove (31) opened on the concave rod (26). Inclined grooves (32) are opened on both sides of the inner wall of the movable groove (31). A vertical groove (33) is opened at the bottom of the inclined grooves (32) on both sides of the movable groove (31). Sliding rods (34) are slidably connected to the inner walls of the inclined grooves (32) on both sides. An L-shaped rod (35) is fixedly connected to one end of the two sliding rods (34). An L-shaped support plate (36) is fixedly connected to the top of the L-shaped rod (35). A rubber pad (37) is fixedly connected to the outer surface of the L-shaped support plate (36). A slider (54) is slidably connected inside the movable groove (31). A spring (55) is fixedly connected to one end of the slider (54) opposite to the movable groove (31). The top of the slider (54) abuts against the bottom of the L-shaped rod (35).

2. The precision motor assembly device according to claim 1, characterized in that: Three sliding grooves (28) are provided on the assembly table (1) at the position corresponding to the arc groove (24). The three sliding grooves (28) are slidably connected to the three concave rods (26). The drive disk (23) is set in the cavity (21).

3. The precision motor assembly device according to claim 1, characterized in that: The L-shaped rod (35) matches the movable groove (31), the inclined groove (32) is connected to the vertical groove (33), and the two sliding rods (34) are slidably connected between the inclined groove (32) and the vertical groove (33) respectively.

4. The precision motor assembly device according to claim 1, characterized in that: A drive assembly is provided on the assembly table (1). The drive assembly includes a servo motor (41) fixedly connected inside the cavity (21). A hydraulic rod (42) is installed on the assembly table (1). A rubber disc (43) is fixedly connected to the bottom end of the hydraulic rod (42).

5. A precision motor assembly device according to claim 2, characterized in that: The drive end of the servo motor (41) is fixedly connected to the shaft (22), and the hydraulic rod (42) is located directly above the cavity (21).

6. The precision motor assembly device according to claim 3, characterized in that: The outer surface of the L-shaped rod (35) is provided with a limiting component. The limiting component includes a connecting rod (51) that is inserted into the outer surface of the three L-shaped rods (35). An arc plate (52) is inserted into the outward end of each of the three connecting rods (51). The outer surface of the three arc plates (52) is jointly adhered with a wiping strip (53).

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