Precise motor assembling device

Abstract

The invention discloses a precise motor assembling device, and relates to the technical field of motor assembly.The precise motor assembling device comprises an assembling table and a fastening assembly arranged in the assembling table, the fastening assembly comprises a cavity formed in the assembling table, a shaft rod is rotationally connected into the cavity, a driving disc is fixedly connected to the outer surface of the shaft rod, and three arc-shaped grooves are annularly formed in the driving disc at equal intervals; the three arc-shaped grooves are internally connected with guide rods in a sliding mode, the top ends of the three guide rods are fixedly connected with concave rods, and the outward ends of the three concave rods are fixedly connected with first rubber pads. The inner wall of the machine shell is fixed through the three concave rods, so that extra stress applied to the machine shell in the screwing process of bolts can be reduced; the stresses may cause deformation of the casing, so that a gap is formed between the stator iron core and the casing during assembly, in addition, the stator iron core and the casing are centered to be coaxial, the central axis of the stator iron core and the central axis of the casing can be ensured to be completely overlapped, and the precision of each assembly can be ensured to be kept at a relatively high level.

Description

Technical Field

[0001] The present invention relates to the technical field of motor assembly, and in particular to a precision motor assembly device. Background Art

[0002] With the continuous advancement of science and 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, while traditional new energy vehicle motor assembly methods have many problems.

[0003] In the existing assembly process of the motor housing and stator of new energy vehicles, the housing is mostly fixed by manually tightening bolts, and then the stator is manually embedded into the housing for assembly. This not only has low assembly efficiency, but also makes it difficult for humans to accurately correct the stator and the housing. In addition, traditional assembly devices also have limitations in adapting to the assembly of new energy vehicle motors of different specifications. When motors of different models and sizes need to be assembled, a large number of adjustments to the assembly device or replacement of some parts are often required, which not only consumes time and manpower, but also increases production costs.

[0004] In order to solve the above problems, a precision motor assembly device is proposed. Summary of the Invention

[0005] In order to solve the above technical problems, a precision motor assembly device is provided. This technical solution solves the problems raised in the above background technology.

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

[0007] The present invention provides a precision motor assembly device, comprising an assembly platform and a fastening component arranged in the assembly platform:

[0008] The fastening assembly includes a cavity opened in the assembly table, a shaft is rotatably connected in the cavity, a driving disk is fixedly connected to the outer surface of the shaft, three arc-shaped grooves are annularly and equidistantly provided on the driving disk, guide rods are slidably connected in the three arc-shaped grooves, the top ends of the three guide rods are fixedly connected to concave rods, and the outward ends of the three concave rods are fixedly connected to rubber pads.

[0009] Furthermore, three sliding grooves are provided on the assembly platform at positions corresponding to the arc grooves. The three sliding grooves are slidably connected to the three concave rods, and the driving disc is arranged in the cavity.

[0010] Furthermore, a support assembly is slidably connected to the concave rod, and the support assembly includes a movable groove on the concave rod, oblique grooves are provided on both sides of the inner wall of the movable groove, and vertical grooves are provided at the bottom ends of the oblique grooves on both sides. The inner walls of the oblique grooves on both sides are slidably connected to sliding rods, and the opposite ends of the two sliding rods are jointly fixedly connected to an L-shaped rod, the top of the L-shaped rod is fixedly connected to an L-shaped support plate, and a rubber pad 2 is fixedly connected to the outer surface of the L-shaped support plate.

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

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

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

[0014] Furthermore, a limit assembly is provided on the outer surface of the L-shaped rod, and the limit assembly includes connecting rods connected to the outer surfaces of the three L-shaped rods, and arc plates are connected to the outward ends of the three connecting rods, and the outer surfaces of the three arc plates are jointly adhered to the wiping tape.

[0015] Furthermore, a slider is slidably connected in the movable groove, and one end of the slider opposite to the movable groove is fixedly connected with a spring, and the top end of the slider is in conflict with the bottom end of the L-shaped rod.

[0016] As described above, the characteristics and advantages of the precision motor assembly device in the present invention are:

[0017] Compared with the previous bolt fixing method, this method reduces the additional stress exerted on the casing by the bolts during the tightening process, which may cause the casing to deform or the internal structure to be subjected to unnecessary pressure. In addition, this inner wall support fixing method can also meet the assembly needs of new energy vehicle motors of various sizes and models, without the need to frequently replace assembly equipment or adjust the production line, thereby shortening production switching time and improving production efficiency. At the same time, this fixing method can also be applied to the stator and rotor, so that the rotor and stator can be quickly fixed and corrected when assembled into the casing, thus reducing the time for repeated position adjustment during the assembly process, improving the consistency and repeatability of the assembly, and thus ensuring the stability of product quality.

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

[0019] By tying the wiping tape to the bottom of the outer surface of the stator core, the wiping tape can be used to limit the stator core when it is embedded in the casing. This can prevent the outer surface of the stator core from shaking due to magnetic force when it is installed into the casing, and cause collision between the stator core and the inner wall of the casing, thereby correcting the stator during the assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0022] Figure 3 This is a schematic diagram of the internal structure of the assembly platform of the precision motor assembly device shown in the present invention;

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

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

[0025] Figure 6 for Figure 5 A partial enlarged view of part A.

[0026] Among them, the figures in the present invention are: 1. assembly table;

[0027] Fastening components: 21, cavity; 22, shaft; 23, drive plate; 24, arc groove; 25, guide rod; 26, concave rod; 27, rubber pad 1; 28, sliding groove;

[0028] Support assembly: 31, movable slot; 32, inclined slot; 33, vertical slot; 34, slide bar; 35, L-shaped rod; 36, L-shaped support plate; 37, rubber pad 2;

[0029] Driving components: 41, servo motor; 42, hydraulic rod; 43, rubber disc;

[0030] Limiting assembly: 51, connecting rod; 52, curved plate; 53, wiping belt; 54, slider; 55, spring. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] See 1~ Figure 6 As shown in FIG. 1 , an embodiment of the present invention provides a precision motor assembly device, which will be described in detail below. The device includes an assembly table 1 and a fastening assembly provided in the assembly table 1.

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

[0034] Furthermore, three sliding grooves 28 are provided on the assembly platform 1 at positions corresponding to the arc-shaped grooves 24 . The three sliding grooves 28 are slidably connected to the three concave rods 26 , and the driving disk 23 is disposed in the cavity 21 .

[0035] Furthermore, a support assembly is slidably connected to the concave rod 26, and the support assembly includes a movable groove 31 provided on the concave rod 26, oblique grooves 32 are provided on both sides of the inner wall of the movable groove 31, and the movable groove 31 is located at the bottom end of the oblique grooves 32 on both sides and has a vertical groove 33. The inner walls of the oblique grooves 32 on both sides are slidably connected to slide rods 34, and the opposite ends of the two slide rods 34 are fixedly connected to an L-shaped rod 35. The top of the L-shaped rod 35 is fixedly connected to an L-shaped support plate 36, and a rubber pad 2 37 is fixedly connected to the outer surface of the L-shaped support plate 36. The rubber pad 1 27 and the rubber pad 2 37 are both made of durable Thermal material, through rubber pad 2 37 and rubber pad 1 27, can prevent the inner wall of the stator core and the inner wall of the casing from being scratched during the correction and fixation of the stator core and the casing. In this way, the casing ensures the flatness of the stator core and the inner wall of the casing, and prevents the subsequent uneven air gap between the stator core and the rotor, which increases the magnetic resistance of the motor and reduces the efficiency of the motor. In addition, scratches may cause uneven contact between the stator core and the inner wall of the casing, thereby generating additional vibration and noise when the motor is running. At the same time, scratches will also damage the insulating coating of the stator core and the inner wall of the casing, thereby reducing the insulation performance.

[0036] Furthermore, the L-shaped rod 35 matches the movable slot 31 , the oblique slot 32 is connected to the vertical slot 33 , and the two sliding rods 34 are slidably connected between the oblique slot 32 and the vertical slot 33 .

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

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

[0039] Furthermore, a limiting assembly is provided on the outer surface of the L-shaped rod 35, and the limiting assembly includes three connecting rods 51 that are plugged into the outer surfaces of the L-shaped rods 35, and the three connecting rods 51 are plugged into an arc-shaped plate 52 at one end facing outward, and the outer surfaces of the three arc-shaped plates 52 are adhered to a wiping tape 53. The material of the wiping tape 53 is heat-resistant rubber, so that the wiping tape 53 has strong plasticity and can expand with the movement of the connecting rod 51 and the arc-shaped plate 52. When fastening casings of different sizes, the size of the installed stator will also change. Since the connecting rod 51 supports plug-in and the wiping tape 53 supports pasting, the connecting rod 51 of appropriate length and the wiping tape 53 of appropriate size can be quickly replaced to match stators of different sizes.

[0040] Furthermore, a slider 54 is slidably connected in the movable groove 31 , and a spring 55 is fixedly connected to one end of the slider 54 opposite to the movable groove 31 , and the top end of the slider 54 contacts the bottom end of the L-shaped rod 35 .

[0041] In combination with the above embodiments, the entire working process and working principle of the above embodiments are as follows:

[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 started to rotate the shaft 22. At this time, the drive disk 23 fixedly connected to the outer surface of the shaft 22 will rotate with the shaft 22 as the center. During the rotation, the inner wall of the drive disk 23 will conflict with the outer surface of the guide rod 25. Since the concave rod 26 slides in the sliding groove 28, when the guide rod 25 is conflicted by the arc groove 24, the guide rod 25 will lead the concave rod 26 to slide outward in the sliding groove 28 with the shaft 22 as the center. When the rubber pads 27 at the ends of the three concave rods 26 conflict with the inner wall of the casing, the casing covered by the three concave rods 26 will automatically adjust to a position with the shaft 22 as the center. At the same time, the three concave rods 26 can also Fixing the casing reduces the additional stress that the bolts would exert on the casing during the tightening process, which would cause the casing to deform or the internal structure to be subjected to unnecessary pressure. In addition, this inner wall support fixing method can also meet the assembly needs of motors of various sizes and models without the need to frequently replace assembly equipment or adjust production lines, thereby shortening production switching time and improving production efficiency. At the same time, this fixing method can also be applied to the stator and rotor, so that the rotor and stator can be quickly fixed and corrected when assembled into the casing, thus reducing the time for repeated position adjustments during the assembly process, improving the consistency and repeatability of the assembly, and thus ensuring the stability of product quality.

[0044] After the concave rod 26 fixes and corrects the casing, the L-shaped rod 35 and the L-shaped support plate 36 on the concave rod 26 will also be opened to a certain distance with the shaft rod 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 the L-shaped rod 35, so that the L-shaped rod 35 slides outward along the trajectory of the inclined slot 32 with the shaft rod 22 as the center through the sliding rod 34. In this way, the three L-shaped support plates 36 will bring the rubber pads 37 covered on their outer surfaces to contact the inner wall of the stator core. The three L-shaped support plates 36 press against the inner wall of the stator core After the touch, the L-shaped rod 35 will follow the sliding rod 34 into the vertical slot 33 and descend along the movable slot 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 fix the stator core while also positioning the stator core so that the center point of the stator core and the housing are in the same position. Rapid fixation and correction can reduce errors caused by human operation. At the same time, this method of centering the stator core and the housing to the same axis can ensure that the central axis of the stator core and the central axis of the housing are completely aligned, ensuring 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] In the process of the above-mentioned sliding rod 34 moving from the inclined groove 32 to the vertical groove 33, the L-shaped rod 35 will follow the trajectory of the inclined groove 32 and slide toward the inner wall of the casing. At this time, the three connecting rods 51 outside the three L-shaped rods 35 will follow the movement. At this time, the three arc plates 52 will open outward with the shaft rod 22 as the center of the circle, so that the wiping belt 53 fixedly connected to the outer surface of the three arc plates 52 away from the end of the connecting rod 51 will stretch out, and then utilize the strong plasticity of the wiping belt 53. At this time, the wiping belt 53 can be tied to the bottom of the outer surface of the stator core. In this way, in the process of the stator core being embedded in the casing, the limiting blockage of the wiping belt 53 can prevent the outer surface of the stator core from shaking due to magnetic reasons when it is installed into the casing, resulting in collision between the stator core and the inner wall of the casing.

[0046] When the stator core is pressed down, the bottom of the L-shaped rod 35 will also resist the slider 54, causing the slider 54 to move down and squeeze the spring 55. After the stator core and the housing are assembled, the heated housing is cooled. The principle of thermal expansion and contraction of metal heating is used to make it easier to assemble the stator core into the housing. The cooled housing will fit more tightly with the stator core. Then, by starting the servo motor 41 to control the shaft 22 and the drive disk 23 to reverse, the inner wall of the arc groove 24 will The outer surface of the guide rod 25 is resisted, so that the concave rod 26 will move toward 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 the positioning of 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, and the compressed spring 55 will push the L-shaped rod 35, the sliding rod 34 and the L-shaped support plate 36 to return to their original position.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

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

Claims

1. A precision motor assembly device, comprising an assembly table (1), characterized in that: A fastening assembly provided in the assembly table (1); The fastening assembly comprises a cavity (21) provided in an assembly table (1), a shaft (22) being rotatably connected in the cavity (21), a driving disc (23) being fixedly connected to the outer surface of the shaft (22), three arcuate grooves (24) being equidistantly provided in an annular shape on the driving disc (23), guide rods (25) being slidably connected in the three arcuate grooves (24), the top ends of the three guide rods (25) being fixedly connected to concave rods (26), and the outward ends of the three concave rods (26) being fixedly connected to rubber pads (27).

2. A precision motor assembly device according to claim 1, characterized in that: Three sliding grooves (28) are provided on the assembly platform (1) at positions corresponding to the arc grooves (24). The three sliding grooves (28) are slidably connected to the three concave rods (26). The driving disc (23) is arranged in the cavity (21).

3. The precision motor assembly device according to claim 2, characterized in that: A support assembly is slidably connected to the concave rod (26), and the support assembly includes a movable groove (31) provided on the concave rod (26), oblique grooves (32) are provided on both sides of the inner wall of the movable groove (31), and vertical grooves (33) are provided at the bottom ends of the oblique grooves (32) on both sides of the movable groove (31), and the inner walls of the oblique grooves (32) on both sides are slidably connected to sliding rods (34), and the opposite ends of the two sliding rods (34) are fixedly connected to an L-shaped rod (35), and the top end of the L-shaped rod (35) is fixedly connected to an L-shaped support plate (36), and a second rubber pad (37) is fixedly connected to the outer surface of the L-shaped support plate (36).

4. The precision motor assembly device according to claim 3, 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 respectively slidably connected between the inclined groove (32) and the vertical groove (33).

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

6. The precision motor assembly device according to claim 5, characterized in that: The driving end of the servo motor (41) is fixedly connected to the shaft (22), and the hydraulic rod (42) is arranged just above the cavity (21).

7. The precision motor assembly device according to claim 6, characterized in that: A limiting assembly is provided on the outer surface of the L-shaped rod (35), and the limiting assembly includes connecting rods (51) connected to the outer surfaces of the three L-shaped rods (35), and arc-shaped plates (52) are connected to the outward ends of the three connecting rods (51), and the outer surfaces of the three arc-shaped plates (52) are adhered to the wiping belt (53).

8. The precision motor assembly device according to claim 7, characterized in that: A slider (54) is slidably connected in the movable groove (31), and one end of the slider (54) opposite to the movable groove (31) is fixedly connected with a spring (55), and the top end of the slider (54) contacts the bottom end of the L-shaped rod (35).

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