High-precision motor convenient to assemble and disassemble and assembling method thereof

Abstract

The invention discloses a high-precision motor convenient to assemble and disassemble and an assembling method thereof. The motor comprises fan blades, a base, a rotor and a stator, a containing cavity and a fixing frame are arranged on the base, and the fixing clamp is provided with a first fixing hole and a second fixing hole which are coaxial; the rotor comprises a shaft rod, a magnet arranged in the middle of the shaft rod in a sleeving mode and a first bearing and a second bearing arranged at the head end and the tail end of the shaft rod in a sleeving mode, the rotor can penetrate through the containing cavity to enter the fixing frame, the first bearing and the second bearing are installed in the first fixing hole and the second fixing hole respectively, and the head end of the shaft rod extends into the containing cavity and is connected with the fan blades in an inserted mode; the stator comprises an insulating frame detachably connected with the base, and pins and a metal block which are mounted on the insulating frame, the insulating frame is provided with a sleeve cavity capable of movably sleeving the rotor, and the metal block partially extends to the sleeve cavity to correspond to the magnet; the assembling method is used for assembling the motor. According to the scheme, the assembling steps can be simplified, the structural stability is guaranteed, assembling errors can be reduced, the service life is prolonged, and meanwhile disassembling and maintaining are convenient so that the maintaining cost can be reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of motors, and particularly relates to a high-precision motor that is convenient for installation and disassembly and an assembly method thereof. Background Art

[0002] Motors are widely used as key components of mechanical equipment. Currently, there are various types of motors on the market. For example, the invention patent with the application number 202411004450.8 mentions a motor (specifically refer to the appendix of this patent Figure 2 ), which mainly includes a fan blade, a front bearing seat, a rotor, a stator, and a rear bearing seat. During assembly, the rotor needs to be coaxially installed on the front bearing seat first, then the stator is sleeved on the rotor, and then the rear bearing seat is coaxially sleeved on the rotor and abuts against the stator, and the rear bearing seat and the front bearing seat are locked and fixed through fasteners such as foot pads, springs, and bolts. Finally, the fan blade is installed on the rotor.

[0003] This motor can reduce its own vibration to a certain extent, but still has the following defects: First, this motor involves the precise assembly and debugging of multiple components. The assembly steps are cumbersome, the production efficiency is low, and during the assembly process, fasteners such as foot pads, springs, and bolts are prone to problems such as loss, damage, or improper installation, thus affecting the overall stability.

[0004] Second, this motor uses a split bearing seat, with a relatively large assembly error. The accumulation of errors will result in insufficient concentricity between the rotor and the front and rear bearing seats, causing the motor to vibrate during high-speed operation, affecting the working accuracy, and even leading to the loosening of fasteners and shortening the overall service life.

[0005] Third, multiple components of this motor are highly integrated, making disassembly difficult and the maintenance difficult. Even simple local failures may require replacing the whole, resulting in a significant increase in maintenance and use costs.

[0006] In view of this, it is very necessary to design a high-precision motor that is convenient for installation and disassembly and an assembly method thereof to solve the above problems. Summary of the Invention

[0007] Technical Problems to be Solved The present invention provides a high-precision motor that is convenient for installation and disassembly and an assembly method thereof, which can not only simplify the assembly steps and ensure the structural stability, but also reduce the assembly error and extend the service life. At the same time, it is also convenient for disassembly and maintenance to reduce the maintenance cost.

[0008] Technical Solutions To achieve the above object, the present invention provides the following technical solutions: A high-precision motor that is convenient for assembly and disassembly, comprising a fan blade, a base, a rotor and a stator; one end of the base is provided with a receiving cavity that opens outward and is used for placing the fan blade, and the other end of the base is provided with a fixing bracket, and the fixing bracket is provided with a first fixing hole and a second fixing hole that are coaxially arranged; the rotor includes a shaft rod, a magnet sleeved and fixed in the middle of the shaft rod, and a first bearing and a second bearing sleeved and fixed at both ends of the shaft rod. The rotor can pass through the receiving cavity and enter the fixing bracket, and the first bearing and the second bearing are respectively synchronously installed into the first fixing hole and the second fixing hole, and the head end of the shaft rod protrudes from the first bearing into the receiving cavity and is inserted and fixed with the fan blade; the stator includes an insulating bracket, pins and metal blocks, the pins and the metal blocks are both installed on the insulating bracket, the insulating bracket is detachably installed on the base, and a sleeve cavity that is coaxially arranged and can movably sleeve the rotor is arranged inside the insulating bracket, and a part of the metal block extends into the sleeve cavity to correspond to the magnet.

[0009] Preferably, the magnet is adhesively fixed to the shaft rod by gluing, and the first bearing and the second bearing are fixed to the two ends of the shaft rod by press-fitting with interference fit to form the rotor; the insulating bracket, the pins and the metal blocks are integrally formed by a plastic-encapsulation process.

[0010] Preferably, the inner diameter of the first fixing hole is larger than the inner diameter of the second fixing hole to facilitate one-time machining and ensure concentricity; the outer diameter of the first bearing is larger than the outer diameter of the second bearing, and they are respectively adapted to the first fixing hole and the second fixing hole.

[0011] Preferably, the base and the fixing bracket are integrally formed. After the receiving cavity is machined on the base by a numerical control machine tool, the first fixing hole and the second fixing hole are machined integrally by the numerical control machine tool / drilling machine.

[0012] Preferably, the rotor further includes a rubber ring, and the rubber ring is coaxially installed on the first bearing and abuts against the inner wall of the first fixing hole.

[0013] Preferably, the rotor further includes a steel sleeve, and the steel sleeve coaxially wraps the circumferential outer wall of the magnet.

[0014] Preferably, the rotor further includes two collar rings, and the two collar rings are coaxially sleeved and fixed on the shaft rod and respectively abut against both ends of the magnet.

[0015] Preferably, the two collar rings are fixed to the shaft rod by press-fitting with interference fit.

[0016] Preferably, a plurality of hollow openings are circumferentially arrayed on the side wall of the fixing frame to expose the magnets of the rotor; a plurality of stoppers are arranged inside the insulating frame, and the plurality of stoppers respectively block the plurality of hollow openings to form the sleeve cavity, and a plurality of protrusions are arranged on the metal block, and the plurality of protrusions respectively extend to the plurality of stoppers to synchronously correspond to the magnets.

[0017] Preferably, there are three hollow openings, and there are three stoppers and three protrusions correspondingly.

[0018] Preferably, there is a gap between the stopper and the hollow opening.

[0019] Preferably, a plurality of heat dissipation openings communicating with the accommodation cavity are opened on each side of the circumference of the first fixing hole of the fixing frame.

[0020] Preferably, the metal block is made of silicon steel sheet material, and the base and the insulating frame are both made of plastic.

[0021] Preferably, a plurality of clamping positions are circumferentially arrayed on the insulating frame; a limiting block and a plurality of support arms are circumferentially arrayed on the base, the limiting block and the plurality of support arms both extend along the length direction of the fixing frame, and buckles are arranged at the ends of the plurality of support arms far away from the base; wherein, the plurality of support arms can synchronously abut against the circumferential outer wall of the insulating frame to coaxially sleeve the rotor with the sleeve cavity, the limiting block can abut against the insulating frame to align the metal block with the magnets, and the plurality of buckles can respectively latch the plurality of clamping positions to mount the insulating frame on the base.

[0022] Preferably, a limiting groove is arranged on the insulating frame, and when the insulating frame is mounted on the base, the limiting block is inserted into the limiting groove.

[0023] Preferably, glue is applied at the insertion part of the limiting block and the limiting groove for fixation.

[0024] Preferably, it further includes a cover shell, the cover shell is mounted on the base and covers the opening of the accommodation cavity, and a circular through groove communicating the accommodation cavity and the outside is arranged on the cover shell, and a plurality of guide vanes are circumferentially arrayed in the circular through groove.

[0025] Preferably, the cover shell is adhesively fixed to the base by applying glue.

[0026] A motor assembly method for assembling the above motor includes: Step S1, perform concentricity detection on the first fixing holes and the second fixing holes of several bases, and determine whether the bases are qualified according to the concentricity detection results; perform dynamic balance detection on several rotors and several fan blades, select the corresponding fan blades for each of the rotors for combination and perform dynamic balance detection on the combination, and determine whether the combination is qualified according to the dynamic balance detection results; Step S2, select a qualified rotor and place it at the opening of the accommodation cavity of the qualified base, and press the rotor into the fixing frame through the accommodation cavity by means of a jig, so that the second bearing and the first bearing are respectively press-fitted into the second fixing hole and the first fixing hole synchronously, ensuring the coaxiality of the shaft rod with the first bearing and the second bearing; Step S3, press-fit the qualified fan blade onto the head end of the shaft rod, and place the fan blade in the accommodation cavity; Step S4, manually or through a jig, install the stator on the base, so that the sleeve holes coaxially enclose the rotor, and then form a finished motor by combination.

[0027] Preferably, the step S1 includes step S11 and step S12. In the step S11, use a concentricity measuring instrument to detect the concentricity of the first fixing hole and the second fixing hole; in the step S12, use a dynamic balance detector to detect several rotors and several fan blades in sequence, record the rotational offset of the rotor and the fan blade, mark the balance points of each rotor and each fan blade according to the rotational offset, select the fan blade with the same rotational offset as the rotor, combine the rotor with the selected corresponding fan blade to form a temporary combination and perform dynamic balance detection; compare the detection result of the temporary combination with a first set value. If the detection result is not greater than the first set value, it is determined that the temporary combination is qualified; if the detection result is greater than the first set value, then compare the detection result with a second set value. If the detection result is not greater than the second set value, add a balance weight to the fan blade. If the detection result is greater than the second set value, re-select the fan blade for combination; Among them, the concentricity is the degree of offset of the centers of the first fixing hole and the second fixing hole, and judge whether the degree of offset of the centers meets the requirements according to the measured difference; the rotational offset is the amplitude of deviation from the axial direction during the rotation of the component; the balance point is the position deviating from the axis marked on the rotor or the fan blade according to the rotational offset; the first set value is positively correlated with the outer diameter of the rotor and the outer diameter of the fan blade respectively; the second set value is positively correlated with the outer diameter of the rotor and the outer diameter of the fan blade respectively; the balance weight is the added counterweight to eliminate rotational imbalance.

[0028] Preferably, in the step S2, the first bearing and the second bearing are respectively fixed to the first fixing hole and the second fixing hole in an interference fit by a press-fitting method, and glue is applied at the connection between the first bearing and the first fixing hole for fixation.

[0029] Preferably, in the step S3, the fan blade is fixed to the shaft rod in an interference fit by a press-fitting method.

[0030] Preferably, in the step S4, if the limiting block is provided on the base, the limiting groove is formed on the insulating frame, and after the limiting block is inserted into the limiting groove, glue is applied at the insertion part of the two for fixation.

[0031] (III) Beneficial effects A high-precision motor convenient for assembly and disassembly and an assembly method thereof provided by the present invention. The high-precision motor convenient for assembly and disassembly can simplify the assembly steps and ensure the structural stability by designing a new base to cooperate with the installation of the rotor, the fan blade and the stator, can reduce the assembly error and extend the service life, and at the same time is convenient for disassembly and maintenance to reduce the maintenance cost; the motor assembly method is used for the assembly of the motor, so it is more convenient than the conventional motor assembly method, can greatly improve the assembly efficiency, and is conducive to realizing the mass production of the motor. Description of the drawings

[0032] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the drawings: Figure 1 Shows the overall structural schematic of the present invention Figure 1 ; Figure 2 Shows the overall structural schematic of the present invention Figure 2 ; Figure 3 Shows Figure 2 The front view of Figure 4 Shows Figure 3 The A-A cross-sectional view of Figure 5 Shows the exploded schematic of the overall structure of the present invention Figure 1 ; Figure 6 Shows the exploded schematic of the overall structure of the present invention Figure 2 ; Figure 7 Shows the structural schematic of the base of the present invention Figure 1 ; Figure 8 Shows the structural schematic of the base of the present invention Figure 2 ; Figure 9Shows an exploded schematic view of the rotor of the present invention; Figure 10 Shows an exploded schematic of the stator of the present invention Figure 1 ; Figure 11 Shows an exploded schematic of the stator of the present invention Figure 2 ; Figure 12 Shows a flowchart of the motor assembly method of the present invention.

[0033] In the figure: 1 base, 10 accommodation cavity, 11 fixing frame, 111 first fixing hole, 112 second fixing hole, 113 hollow opening, 1130 gap, 114 heat dissipation opening, 12 limiting block, 13 support arm, 130 buckle, 2 rotor, 21 shaft rod, 211 first bearing, 212 second bearing, 213 abutting block, 22 magnet, 23 rubber ring, 24 steel sleeve, 25 collar, 3 stator, 31 insulating frame, 310 sleeve cavity, 311 stop block, 312 clamping position, 313 limiting groove, 32 pin, 33 metal block, 331 protrusion, 4 fan blade, 5 housing, 51 circular through groove, 510 guide vane. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. It can be understood that the accompanying drawings are only for reference and illustration, and are not used to limit the present application. The connection relationships shown in the drawings are only for clear description and do not limit the connection methods.

[0035] Refer to the attached Figure 1 - attached Figure 6, A high-precision motor that is easy to assemble and disassemble, comprising a base 1, a rotor 2, a stator 3, and a fan blade 4; one end of the base 1 is provided with a receiving cavity 10 that opens outward and is used for placing the fan blade 4, and the other end of the base 1 is provided with a fixing bracket 11, and the fixing bracket 11 is provided with a first fixing hole 111 and a second fixing hole 112 that are coaxially arranged; the rotor 2 includes a shaft rod 21, a magnet 22 sleeved and fixed in the middle of the shaft rod 21, and a first bearing 211 and a second bearing 212 sleeved and fixed at both ends of the shaft rod 21. The first bearing 211 and the second bearing 212 are respectively synchronously installed into the first fixing hole 111 and the second fixing hole 112, and the head end of the shaft rod 21 protrudes from the first bearing 211 into the receiving cavity 10 and is inserted and fixed with the fan blade 4; the stator 3 includes an insulating frame 31, pins 32, and a metal block 33. The pins 32 and the metal block 33 are both installed on the insulating frame 31. The insulating frame 31 is detachably installed on the base 1, and a sleeve cavity 310 that is coaxially arranged and can movably sleeve the rotor 2 is provided inside the insulating frame 31. A part of the metal block 33 extends into the sleeve cavity 310 to correspond to the magnet 22.

[0036] Specifically, during assembly, first place the rotor 2 at the opening of the receiving cavity 10, and move the rotor 2 through the receiving cavity 10 into the fixing bracket 11, so that the first bearing 211 and the second bearing 212 are respectively synchronously installed into the first fixing hole 111 and the second fixing hole 112. Then move the fan blade 4 into the receiving cavity 10 and insert and fix it with the head end of the shaft rod 21. Finally, install the insulating frame 31 on the base 1 so that the metal block 33 corresponds to the magnet 22; during disassembly, the staff can choose to disassemble the fan blade 4 and the stator 3 separately according to needs. And after disassembling the fan blade 4, the rotor 2 can be separately removed without affecting the stator 3, which is convenient for targeted maintenance.

[0037] In summary, the present invention solves the defects existing in the existing motor by designing a new base 1 to cooperate with the installation of the rotor 2, the fan blade 4, and the stator 3, and at least has the following advantages: First, by reducing the number of components to reduce assembly and debugging, the assembly steps are simplified, the production efficiency is improved, and at the same time, the structure of the motor is made more compact, the utilization rate of the internal space of the motor is increased, and the overall weight is reduced; and during the assembly process, the installation method of the stator 3 is more flexible and is no longer limited by fasteners such as foot pads, springs, and bolts, avoiding the problem of improper installation and ensuring the stability of the overall structure.

[0038] Second, by adopting the integral base 1 with the coaxially arranged first fixing hole 111 and second fixing hole 112, the first bearing 211 and the second bearing 212 can be synchronously installed, so that the coaxiality of the axis of the rotor 2 and the base 1 can be improved, the assembly error can be eliminated, the possibility of vibration during the high-speed operation of the motor can be effectively reduced, the working precision is ensured, and at the same time, the loosening of components such as the rotor 2 and the stator 3 can be prevented, and the overall service life is extended.

[0039] Thirdly, the integrated base 1 allows the rotor 2, stator 3 and blades 4 to be installed independently, and only single-side components need to be processed during disassembly, which facilitates disassembly by the staff and reduces the difficulty of maintenance. In addition, when a local failure occurs in the motor, the staff can specifically dismantle the damaged parts for maintenance without replacing the entire motor, thereby reducing the maintenance and use costs.

[0040] It should be noted that there are various ways to fix the components of the rotor 2 and the stator 3, which are not limited in the present invention. In order to improve the stability of use and make the dynamic balance of the rotor 2 meet the requirements, in this embodiment, the magnet 22 is bonded and fixed to the shaft 21 by gluing, and the first bearing 211 and the second bearing 212 are fixed to the shaft 21 at both ends by press-fitting to form the rotor 2; and the insulating frame 31, the pin 32 and the metal block 33 can be integrally formed by the glue encapsulation process.

[0041] See attached Figure 4 -Attached Figure 8 The inner diameter of the first fixing hole 111 is larger than the inner diameter of the second fixing hole 112 to facilitate one-time processing and forming; the outer diameter of the first bearing 211 is larger than the outer diameter of the second bearing 212, and is respectively adapted to the first fixing hole 111 and the second fixing hole 112; the design of one-time processing and forming of the first fixing hole 111 and the second fixing hole 112 can ensure that the concentricity tolerance between the two is ≤0.005mm, so that after the first bearing 211 and the second bearing 212 are installed, the rotor 2 and the base 1 have a higher coaxiality, thereby reducing the assembly error when the rotor 2 is installed on the fixing frame 11, improving the coaxiality of the rotor 2 and the axis of the base 1, and reducing the possibility of vibration of the motor when running at high speed.

[0042] Furthermore, in the present embodiment, the base 1 and the fixing frame 11 are integrally formed to provide installation stability for the rotor 2 and the stator 3, and are helpful in reducing vibration and maintaining the dynamic balance of the rotor 2; and the integrally formed base 1 and fixing frame 11 also facilitate workers to use CNC machine tools to process the accommodating cavity 10 on the base 1, and then directly use CNC machine tools / drilling machines to process the first fixing hole 111 and the second fixing hole 112 at one time.

[0043] See attached Figure 4 -Attached Figure 6 and attached Figure 9 The rotor 2 also includes a rubber ring 23, which is coaxially mounted on the first bearing 211 and abuts against the inner wall of the first fixing hole 111; the design of the rubber ring 23 can make the first bearing 211 stably mounted in the first fixing hole 111, while reducing the wear of the first bearing 211 or the first fixing hole 111 to maintain the coaxiality of the rotor 2 and the axis of the base 1; in addition, the rubber ring 23 also has the function of shock absorption and maintaining the dynamic balance of the rotor 2.

[0044] Further, in order to further improve the installation stability of the rotor 2, after the first bearing 211 is inserted into the first fixing hole 111, glue can be applied to the connection between the two for fixing; when disassembling, a hot air blower is needed to dissolve the glue at this position before disassembling.

[0045] Refer to the attached Figure 4 - attached Figure 6 and attached Figure 9 , the rotor 2 further includes a steel sleeve 24, and the steel sleeve 24 coaxially wraps the circumferential outer wall of the magnet 22; the design of the steel sleeve 24 can protect the magnet 22 and reduce the possibility of the magnet 22 being damaged during installation and use.

[0046] Refer to the attached Figure 4 - attached Figure 6 and attached Figure 9 , the rotor 2 further includes two collars 25, and the two collars 25 are coaxially sleeved on the fixed shaft rod 21 and respectively abut against both ends of the magnet 22.

[0047] Specifically, before installing the first bearing 211 and the second bearing 212, first install one collar 25 onto the shaft rod 21, then install the magnet 22 onto the shaft rod 21 and make this collar 25 abut against one end of the magnet 22, then install the other collar 25 onto the shaft rod 21 and abut against the other end of the magnet 22, and finally install the first bearing 211 and the second bearing 212 onto the head and tail ends of the shaft rod 21 respectively; among them, the design of the two collars 25 can not only limit and fix the magnet 22 on the shaft rod 21 to improve the installation stability of the magnet 22, but also be used to assist in maintaining the dynamic balance of the rotor 2.

[0048] It should be noted that there are various fixing methods between the collar 25 and the shaft rod 21, and the present invention does not limit this. For the convenience of understanding, in this embodiment, the two collars 25 are fixed to the shaft rod 21 by interference fit in a press-fitting manner; on the other hand, a blocking block 213 for synchronously abutting against the collar 25 and the second bearing 212 can also be designed on the shaft rod 21 to further improve the installation stability of the collar 25 and the second bearing 212.

[0049] Refer to the attached Figure 1 - attached Figure 6 and attached Figure 10 - attached Figure 11, a plurality of hollow openings 113 are circumferentially arrayed on the side wall of the fixing frame 11 to expose the magnets 22 of the rotor 2; a plurality of stoppers 311 are provided inside the insulating frame 31, and the plurality of stoppers 311 respectively block the plurality of hollow openings 113 to form a sleeve cavity 310. A plurality of protrusion parts 331 are provided on the metal block 33, and the plurality of protrusion parts 331 respectively extend to the plurality of stoppers 311 to synchronously correspond to the magnets 22; the cooperation of the hollow openings 113 and the stoppers 311 enables the plurality of protrusion parts 331 on the metal block 33 to accurately correspond to the magnets 22, thereby ensuring that the stator 3 can stably drive the rotor 2 to rotate.

[0050] Further, in this embodiment, there are three hollow openings 113, and the stoppers 311 and the protrusion parts 331 both correspond to the hollow openings 113. This design enables the metal block 33 to act on three circumferential side surfaces of the magnet 22 at the same time. Under this design, the stator 3 can continuously drive the rotor 2 to rotate stably and is beneficial to reducing the vibration of the rotor 2.

[0051] Refer to the appendix Figure 4 - appendix Figure 6 , the heat dissipation performance of the traditional motor is poor. The compact structure makes it difficult for the internal heat to dissipate. It is easy to overheat during long-term high-load operation, which affects the service life and performance. Moreover, in a high-temperature environment, the magnet 22 may undergo irreversible demagnetization, resulting in a decrease in work efficiency; to solve this problem, in the present invention, there is a gap 1130 between the stopper 311 and the hollow opening 113; this design enables the heat generated by the magnet 22 and the protrusion part 331 to overflow to the outside through the gap 1130 during the operation of the rotor 2, thereby effectively reducing the internal temperature of the motor, avoiding demagnetization of the magnet 22, ensuring the service life and performance of the motor, and improving work efficiency.

[0052] Refer to the appendix Figure 4 - appendix Figure 8 , the fixing frame 11 is provided with a plurality of heat dissipation openings 114 communicating with the accommodation cavity 10 on each side of the circumference of the first fixing hole 111; this design enables the heat generated by the rotor 2 and the stator 3 to enter the accommodation cavity 10 through the heat dissipation openings 114. At the same time, the rotation of the fan blade 4 can be used to discharge the heat from the opening of the accommodation cavity 10, giving full play to the role of the fan blade 4 to further improve the heat dissipation efficiency.

[0053] Refer to the appendix Figure 1 - appendix Figure 9 , the metal block 33 is made of silicon steel sheet material, and the base 1 and the insulating frame 31 are both made of plastic; in addition to the above materials, other materials can also be used to make the metal block 33, the base 1 and the insulating frame 31. Since there are various types of relevant materials, the present invention does not limit this.

[0054] Refer to the appendix Figure 2 - appendix Figure 6 and appendix Figure 11, there are multiple locking positions 312 in a circumferential array on the insulating frame 31; a limit block 12 and a plurality of support arms 13 in a circumferential array are provided on the base 1, and the limit block 12 and the plurality of support arms 13 both extend along the length direction of the fixed frame 11; the limit block 12 is used to abut and limit the insulating frame 31, and the plurality of support arms 13 can synchronously abut the circumferential outer wall of the insulating frame 31, and a buckle 130 for the locking position 312 is provided on the end of the support arm 13 away from the base 1.

[0055] Specifically, when assembling the stator 3, the sleeve cavity 310 of the insulating frame 31 is aligned with the fixed frame 11, and then the insulating frame 31 is moved to the base 1. In this process, the insulating frame 31 squeezes the multiple arms 13 to cause adaptive deformation. After the direct insulating frame 31 completely enters the space surrounded by the multiple arms 13, the limit block 12 abuts against the insulating frame 31, so that the metal block 33 is aligned with the magnet 22. At the same time, the multiple arms 13 return to their original state and synchronously abut against the circumferential outer wall of the insulating frame 31 to limit The sleeve cavity 310 is coaxial with the rotor 2 and prevents the protrusion 331 from contacting the magnet 22. In the process of the multiple arms 13 returning to their original state, the multiple buckles 130 can be driven to engage with the multiple positions 312 one by one to install the insulating frame 31 on the base 1. Similarly, when disassembling the stator 3, the multiple arms 13 are simultaneously bent to separate from the insulating block, and the connection between the multiple buckles 130 and the multiple positions 312 is released. In addition, the stator 3 can be removed by moving the insulating block away from the base 1.

[0056] In summary, the use of this mounting structure to achieve assembly and disassembly between the insulating frame 31 and the base 1 can completely remove screws, springs and other fixings from the entire motor, ensuring that the motor is easier to assemble and reducing assembly errors, and can also further achieve lightweighting of the motor.

[0057] It should be noted that, in addition to the above-mentioned installation structure, the insulating frame 31 and the base 1 can also be bonded with glue, fixed by screws, or directly welded with welding rods. The specific installation method is relatively flexible, so it is not limited in the present invention.

[0058] See attached Figure 1 -Attached Figure 6 and attached Figure 10 A limiting groove 313 is provided on the insulating frame 31. When the insulating frame 31 is installed on the base 1, the limiting block 12 is inserted into the limiting groove 313. The coordinated use of the limiting block 12 and the limiting groove 313 can not only limit the rotation of the insulating frame 31 and improve the installation stability of the insulating frame 31, but also assist the buckle 130 in aligning the card insertion position 312 for easy observation.

[0059] Further, in order to improve the installation stability of the insulating bracket 31, after the limiting block 12 is inserted into the limiting groove 313, glue is applied to the insertion part of the limiting block 12 and the limiting groove 313 for fixation; when disassembling the stator 3, a hot air blower is needed to dissolve the glue at this position before disassembly.

[0060] Refer to the appendix Figure 1 - appendix Figure 6 It further includes a housing 5, which is installed on the base 1 and covers the opening of the accommodating cavity 10, and a circular through groove 51 communicating the accommodating cavity 10 with the outside is provided on the housing 5, and a plurality of guide vanes 510 are circumferentially arrayed in the circular through groove 51.

[0061] Specifically, the design of the housing 5 can protect the fan blade 4 inside to avoid damage to the fan blade 4; while the design of the plurality of guide vanes 510 can reduce the flow guiding blockage rate, stabilize the suction power, effectively reduce the power consumption, and further improve the stability of the motor and extend the service life of the motor.

[0062] Further, there are various fixing methods between the housing 5 and the base 1, which are not limited in the present invention. For the convenience of understanding, in this embodiment, the housing 5 is adhesively fixed to the base 1 by applying glue; when disassembling the housing 5, a hot air blower is needed to dissolve the glue at this position before disassembly.

[0063] Refer to the appendix Figure 1 - appendix Figure 6 and appendix Figure 12 A motor assembly method is used for the assembly of the above motor, including: Step S1, detect the concentricity of the first fixing holes 111 and the second fixing holes 112 of several bases 1, and determine whether the base 1 is qualified according to the concentricity detection result; perform dynamic balance detection on several rotors 2 and several fan blades 4, select the corresponding fan blades 4 for each rotor 2 for combination and perform dynamic balance detection on this combination, and determine whether this combination is qualified according to the dynamic balance detection result; Step S2, select a qualified rotor 2 and place it at the opening of the accommodating cavity 10 of the qualified base 1, and press the rotor 2 into the fixing frame 11 through the accommodating cavity 10 by a jig, so that the second bearing 212 and the first bearing 211 are respectively press-fitted into the second fixing hole 112 and the first fixing hole 111 synchronously, and ensure the coaxiality of the shaft rod 21 with the first bearing 211 and the second bearing 212; Step S3, press-fit the qualified fan blade 4 onto the head end of the shaft rod 21, and place the fan blade 4 in the accommodating cavity 10; Step S4, manually or through a jig, install the stator 3 on the base 1 so that the sleeve holes coaxially enclose the rotor 2, and then form a finished motor by combination.

[0064] In summary, the motor assembly method is applied to the assembly of a unique motor structure. Therefore, compared with the assembly method of conventional motors, the assembly is more convenient, can greatly improve the assembly efficiency, and is conducive to realizing the mass production of motors.

[0065] Further, step S1 includes step S11 and step S12. In step S11, a concentricity measuring instrument is used to detect the concentricity of the first fixing hole 111 and the second fixing hole 112. In step S12, a dynamic balance detector is used to detect a plurality of rotors 2 and a plurality of fan blades 4 in sequence, record the rotational offset of the rotors 2 and the fan blades 4, mark the balance points of each rotor 2 and each fan blade 4 according to the rotational offset, select the fan blade 4 with the same rotational offset as the rotor 2, combine the rotor 2 with the selected corresponding fan blade 4 to form a temporary combination and perform dynamic balance detection; compare the detection result of the temporary combination with a first set value. If the detection result is not greater than the first set value, it is determined that the temporary combination is qualified; if the detection result is greater than the first set value, then compare the detection result with a second set value. If the detection result is not greater than the second set value, add balance weights to the fan blade 4. If the detection result is greater than the second set value, re-select a new combination; Among them, the concentricity is the degree of the center offset of the first fixing hole 111 and the second fixing hole 112, and it is judged whether the center offset degree meets the requirements according to the measured difference value; the rotational offset is the amplitude of the component deviating from the axial direction during rotation, the balance point is the position deviating from the axis marked on the rotor 2 or the fan blade 4 according to the rotational offset, the first set value is positively correlated with the outer diameter of the rotor 2 and the outer diameter of the fan blade 4 respectively; the second set value is positively correlated with the outer diameter of the rotor 2 and the outer diameter of the fan blade 4 respectively, and the balance weight is the added counterweight for eliminating rotational imbalance.

[0066] It should be noted that regarding the specific concentricity detection method and dynamic balance detection method, they both belong to the prior art. Therefore, specific implementation cases are not provided in the present invention.

[0067] Further, in step S2, the first bearing 211 and the second bearing 212 are fixed in interference fit with the first fixing hole 111 and the second fixing hole 112 respectively by a press-fitting method, and glue is applied and fixed at the connection between the first bearing 211 and the first fixing hole 111.

[0068] Further, in step S3, the fan blade 4 is fixed in interference fit with the shaft rod 21 by a press-fitting method.

[0069] Further, in step S4, if there is a limiting block 12 on the base 1, a limiting groove 313 is formed on the insulating frame 31. After the limiting block 12 is inserted into the limiting groove 313, glue is applied and fixed at the insertion part of the two.

[0070] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high-precision motor that is convenient for installation and disassembly, including a fan blade, characterized in that, Further comprising: A base, one end of the base is provided with a receiving cavity opening outward, the other end of the base is provided with a fixing bracket, and the fixing bracket is provided with a first fixing hole and a second fixing hole coaxially arranged; A rotor, the rotor includes a shaft rod, a magnet sleeved and fixed in the middle of the shaft rod, and a first bearing and a second bearing sleeved and fixed at both ends of the shaft rod. The rotor can pass through the receiving cavity and enter the fixing bracket, and the first bearing and the second bearing are respectively synchronously installed into the first fixing hole and the second fixing hole. The first end of the shaft rod protrudes from the first bearing into the receiving cavity and is inserted and fixed with the fan blade; A stator, the stator includes an insulating frame, pins and metal blocks. The pins and the metal blocks are both installed on the insulating frame. The insulating frame is detachably installed on the base, and a sleeve cavity coaxially and movably sleeving the rotor is arranged inside the insulating frame. A part of the metal block extends into the sleeve cavity to correspond to the magnet.

2. The high-precision motor that is convenient for assembly and disassembly according to claim 1, wherein The inner diameter of the first fixing hole is larger than the inner diameter of the second fixing hole, and the outer diameter of the first bearing is larger than the outer diameter of the second bearing to respectively adapt to the first fixing hole and the second fixing hole.

3. A high-precision motor that is easy to assemble and disassemble according to claim 1, wherein The rotor further includes a rubber ring, and the rubber ring is coaxially installed on the first bearing and abuts against the inner wall of the first fixing hole.

4. A high-precision motor that is easy to assemble and disassemble according to claim 1, characterized in that, The rotor further includes two collar rings, and the two collar rings are coaxially sleeved and fixed on the shaft rod and respectively abut against both ends of the magnet.

5. A high-precision motor that is easy to assemble and disassemble according to claim 1, characterized in that, A plurality of hollow openings are circumferentially arranged on the side wall of the fixing bracket to expose the magnet of the rotor; a plurality of stoppers are arranged inside the insulating frame, and the plurality of stoppers respectively block the plurality of hollow openings to form the sleeve cavity. A plurality of protrusions are arranged on the metal block, and the plurality of protrusions respectively extend to the plurality of stoppers to synchronously correspond to the magnet.

6. The high-precision motor that is convenient for assembly and disassembly according to claim 5, wherein, A gap is provided between the stopper and the hollow opening for heat to overflow.

7. A high-precision motor that is easy to assemble and disassemble according to claim 1, characterized in that, The fixing bracket is provided with a plurality of heat dissipation openings communicating with the receiving cavity on each side of the circumference of the first fixing hole.

8. A high-precision motor that is easy to assemble and disassemble according to claim 1, characterized in that, A plurality of clamping positions are circumferentially arranged on the insulating frame; a limiting block and a plurality of support arms arranged in a circumferential array are provided on the base. The limiting block and the plurality of support arms all extend along the length direction of the fixing bracket, and a buckle is arranged at the end of each of the plurality of support arms away from the base; wherein, the plurality of support arms can synchronously abut against the circumferential outer wall of the insulating frame to make the sleeve cavity coaxially sleeve the rotor, the limiting block can abut against the insulating frame to make the metal block align with the magnet, and the plurality of buckles can respectively engage with the plurality of clamping positions to install the insulating frame on the base.

9. A highly precise motor facilitating assembly and disassembly according to claim 8, characterized in that, The insulating frame is provided with a limiting groove, and when the insulating frame is installed on the base, the limiting block is inserted into the limiting groove.

10. A method for assembling an electric machine, characterized in that, For the assembly of the motor according to any one of claims 1-9, including: Step S1, detecting the concentricity of the first fixing hole and the second fixing hole of a plurality of bases, and determining whether the bases are qualified according to the concentricity detection result; detecting the dynamic balance of a plurality of rotors and a plurality of fan blades, selecting the combination of each rotor corresponding to the fan blade and detecting the dynamic balance of the combination, and determining whether the combination is qualified according to the dynamic balance detection result; Step S2: Select a qualified rotor and place it at the opening of the accommodation cavity of the qualified base, and press the rotor into the fixing bracket through the accommodation cavity by means of a jig, so that the second bearing and the first bearing are respectively press-fitted into the second fixing hole and the first fixing hole synchronously, ensuring the coaxiality of the shaft rod with the first bearing and the second bearing; Step S3: Press-fit the qualified fan blade onto the head end of the shaft rod so that the fan blade is placed in the accommodation cavity; Step S4: Manually or through a jig, install the stator on the base so that the sleeve holes coaxially enclose the rotor, thereby forming a finished motor by combination.

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