Electric fan motor, polishing device for intelligent manufacturing and production of electric fan motor and use method of polishing device

Abstract

The invention discloses an electric fan motor and a polishing device for intelligent manufacturing and production thereof, and relates to the technical field of motor machining. According to the electric fan motor, the one-way heat dissipation problem is solved by arranging the air guide structure between the shell and the motor shell, the outer wall of the rear end cover is provided with the tapered air guide ring which is matched with the inclined plane to guide airflow to form a high-speed area, and air laterally cools the stator through the second ventilation opening; honeycomb-shaped ventilation openings are formed in the front end cover and the rear end cover to achieve axial heat dissipation, and a double-circulation cooling channel is formed. The polishing device adopts integrated design to solve the problem of manufacturing cost, automatic clamping is achieved through linkage of a first electric push rod and a conical ejector block, and when a rotor is fed, an output shaft pushes a moving plate to move outwards to drive the conical ejector block to retract and then reset for clamping; the reciprocating lead screw drives the movable base to drive the polishing grinding wheel to reciprocate, and the threaded rod controls the feeding amount and cooperates with the laser sensor to monitor the polishing depth. Efficient heat dissipation and polishing process automation of the motor are achieved, and the equipment complexity and the production cost are remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the field of motor processing technology, and in particular to an electric fan motor and a polishing device for its intelligent manufacturing and production, and a method for using the polishing device. Background Art

[0002] Electric fan, also known as fan or blower, is a household appliance that uses an electric motor to drive the blades to rotate to accelerate the circulation of air. It is mainly used for cooling and circulating air. The working air volume can reach 50-70m 3 / min, reducing the ambient temperature by 3-5°C. Widely used in homes, classrooms, offices, shops, hospitals, hotels and other places, electric fan motors are composed of core components such as rotors, stators and capacitors.

[0003] During motor operation, the rotor and stator generate heat when energized, requiring ventilation and dissipation. Traditional cooling solutions rely on installing a cooling fan at the motor shaft end to force airflow into the motor. However, this one-way airflow creates heat-blocking areas around the stator winding ends and along the rotor axis. These areas can experience temperature rises exceeding 80°C, compromising cooling effectiveness.

[0004] Furthermore, before assembling the motor's stator and rotor assemblies, the rotor's outer diameter must be precision-polished to ensure uniformity in the air gap between the rotor and stator (typically controlled within 0.35±0.05mm). Traditionally, a single polishing operation involves five steps: loading, clamping, polishing, disassembly, and unloading. These steps involve three independent drive mechanisms: the loading mechanism, the clamping mechanism, and the unloading mechanism. The coordination of these multiple mechanisms increases the equipment's structural complexity by over 30%, directly driving up manufacturing costs.

[0005] In response to the above problems, the present invention document proposes an electric fan motor and a polishing device for its intelligent manufacturing and production, as well as a method for its use. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the existing electric fan motor, in which the air can only dissipate heat in one direction when entering the motor, resulting in poor heat dissipation effect, and the rotor clamping and disassembly require the use of multiple drive mechanisms for coordinated operation, which increases the manufacturing cost of the polishing equipment. The present invention proposes an electric fan motor, a polishing device for intelligent manufacturing production, and a method for using the same.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An electric fan motor, comprising:

[0009] The housing has a motor housing assembly composed of a front cover and a rear cover disposed therein;

[0010] The air guide assembly includes an axial flow fan mounted on the rotor output shaft, a trapezoidal support block welded to the inner wall of the housing, and a tapered air guide ring mounted on the rear end cover. The air guide ring has an inner diameter of Φ120 mm at the inlet end and an inner diameter of Φ80 mm at the outlet end, a contraction angle θ=15°, and forms a 0.5 mm gap with the outer wall of the rear end cover.

[0011] The ventilation structure includes honeycomb-shaped first ventilation openings provided on the front cover and the rear cover, and trapezoidal second ventilation openings provided on the rear cover. The first ventilation openings have an aperture diameter of Φ8 mm and a hole spacing of 12 mm. The second ventilation openings have an inlet width of 8 mm and an outlet width of 12 mm.

[0012] The air guide ring and the 15° inclined surface of the rear end cover form an airflow acceleration channel, which increases the airflow speed through the gap to 8m / s. The high-speed airflow forms a spiral impact on the stator core through the second ventilation port.

[0013] As a further improvement of the above technical solution:

[0014] Six gradually expanding air outlets and five air inlets are respectively provided at both ends of the shell. The air inlet is equipped with a double-layer filter screen, the outer layer is a coarse stainless steel mesh, and the inner layer is an electrostatic adsorption layer. The filtration efficiency reaches the PM2.5 standard, and the area ratio of the air inlet to the air outlet is 0.8:1.

[0015] The filter is fixed by a magnetic mounting frame, a neodymium iron boron permanent magnet is embedded inside the mounting frame, and a magnetic conductive stainless steel strip is integrated into the filter frame to form a detachable connection structure.

[0016] A polishing device for intelligent manufacturing production, used for processing the rotor of the above-mentioned electric fan motor, comprising:

[0017] A bottom plate, on which an inclined feed ramp and two parallel vertical plates are provided;

[0018] The clamping mechanism comprises a rotating shaft, a conical top block slidably connected to the rotating shaft, and a movable plate connected to the vertical plate via a sliding rod, wherein the bottom of the movable plate is provided with an inclined surface that cooperates with the rotor output shaft;

[0019] A driving module, comprising a rotating rod for synchronously driving the two rotating shafts, and a reciprocating screw cooperating with the moving seat;

[0020] The detection unit includes a laser sensor linked to the rotating rod through a spiral groove.

[0021] As a further improvement of the above technical solution:

[0022] The conical top block is elastically connected to the rotating shaft through a first spring, the movable plate is reset by a second spring, and a second arc support plate is provided on the top of the movable plate, an inclined groove is provided on one side of the movable plate, the second push rod of the pushing structure slides with the inclined groove, the second push rod is fixed on the pushing plate, the reciprocating screw slides with the movable seat, the movable seat is provided with a feed seat adjusted by a threaded rod, the feed seat is equipped with a polishing grinding wheel, a discharge inclined plate is provided between the vertical plates, and a guide plate is provided on the discharge inclined plate which is reset by a third spring, the guide plate is provided with a guide slope, the elastic coefficient of the third spring is 30N / mm, and the inclination angle of the guide slope of the guide plate is 30°.

[0023] In this application, the method for using the polishing device for intelligent manufacturing production includes the following steps:

[0024] S1. The rotor is placed on the inclined feed ramp. The first electric push rod pushes the bottom rotor upwards, and the subsequent rotors automatically fill in the gaps. When the rotor rises, the output shafts on both sides push the moving plate. Then, through the cooperation of the moving plate, the first push rod and the connecting block, the conical top block extends into the circular groove to clamp the rotor, ensuring the stability of the rotor.

[0025] S2, the motor drives the rotating rod, which drives the rotating shaft to rotate through the synchronous wheel and synchronous belt, and then rotates the rotor through the conical top block, realizing multi-angle polishing of the rotor by the polishing wheel;

[0026] S3. The motor drives the reciprocating screw to move the movable seat back and forth for polishing. The threaded rod controls the movement of the feed seat to precisely adjust the polishing feed amount. When the rotating rod rotates, the mounting seat moves back and forth under the action of the spiral groove. The laser sensor monitors the polishing depth to accurately control the polishing operation.

[0027] S4. After polishing is completed, the second electric push rod pushes the push plate, and the movable plate moves to both sides through the second push rod and the inclined groove, releasing the clamping of the conical top block on the rotor; the rotor falls on the guide plate, and the push plate continues to push it to the discharge inclined plate, and the rotor rolls along the inclined plate for collection and subsequent processing;

[0028] S5. When the first electric push rod pushes the rotor upward, the rotor pushes the guide plate to extend into the clearance groove; after the rotor is in place, the guide plate is reset under the action of the third spring to guide the released rotor to the discharge inclined plate for discharge.

[0029] Beneficial effects: in the present application, one side of the vertical plate is slidably connected with a moving plate through a sliding rod, the rotating shaft is slidably connected with a conical top block through a circular groove, the outer wall of the conical top block is slidably connected with a connecting block, and the first push rod is fixed between the connecting block and the moving plate; when the rotor is pushed upward, the moving plate is pushed outward by one end of the output shaft of the rotor, the moving plate pushes the conical top block to extend into the circular groove, until both output shafts of the rotor are located above the moving plate, the moving plate is reset and moved under the action of the second spring, one end of the conical top block can just extend into the positioning groove of one end of the output shaft of the rotor, and the conical top blocks on both sides can clamp the rotor;

[0030] In the present application, the pushing structure includes a second electric push rod fixed on the bottom of the moving seat through the rack, a pushing plate slidably connected between the two vertical plates, two second push rods fixed on one side of the pushing plate, and a slope groove formed on one side of each of the two moving plates; the second electric push rod pushes the pushing plate to move, the second push rod cooperates with the slope groove to push the moving plate to move to both sides, the conical top block releases the clamping of the rotor, and at the same time, the pushing plate can continue to push the rotor to the direction of the discharging inclined plate, so as to complete the discharging operation of the rotor;

[0031] In the present application, the outer wall of the rear end cover is provided with a plurality of second ventilation openings, the inner wall of the shell is fixed with a wind guide ring, the cross section of the wind guide ring is arc-shaped, the area of one end of the wind guide ring close to the fan is larger than that of the other end, a gap is formed between the rear end cover and the end of the wind guide ring with small area, and an inclined surface is arranged on one side of the rear end cover close to the fan; the inclined surface on one side of the rear end cover guides the air entering the shell into the wind guide ring, and since the gap between the inner wall of one end of the wind guide ring and the outer wall of the rear end cover is smaller than the area of the opening of the other end of the wind guide ring, the air flow velocity at the gap increases under the condition that the air flow into the wind guide ring is unchanged, the air passing through the second ventilation opening can be side cooled to the stator, and the increased air speed can accelerate the heat dissipation of the stator.

[0032] In the present application, the cooperation of the first electric push rod and the second electric push rod can alternately complete the feeding, clamping and discharging operations of the rotor, the operation is simple, the vertical plates cooperate with the first electric push rod and the second electric push rod respectively, the clamping and unclamping operations can be performed, too many driving mechanisms are not needed, the manufacturing cost of the polishing device is greatly reduced, and in addition, when the rotor and the stator are used together, the cooperation of the rear end cover and the wind guide ring can guide the air to set the stator and the rotor from multiple angles to dissipate heat, so that the heat dissipation efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a three-dimensional structure schematic diagram of the electric fan motor provided by the present application;

[0034] Figure 2This is a schematic diagram of the three-dimensional exploded structure of the mounting bracket and filter screen of the electric fan motor provided by the present invention;

[0035] Figure 3 This is a schematic cross-sectional view of the electric fan motor provided by the present invention;

[0036] Figure 4 This is a schematic diagram of a three-dimensional exploded structure of the front cover, rear cover, stator and rotor of the electric fan motor provided by the present invention;

[0037] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the air guide ring of the electric fan motor provided by the present invention;

[0038] Figure 6 This is a schematic diagram of the three-dimensional structure of the polishing device for intelligent manufacturing production provided by the present invention;

[0039] Figure 7 This is a three-dimensional exploded structural diagram of the clamping structure and the feeding structure of the polishing device for intelligent manufacturing production provided by the present invention;

[0040] Figure 8 This is a schematic diagram of a three-dimensional exploded cross-section of the rotating shaft, movable plate, and conical top block of the polishing device for intelligent manufacturing provided by the present invention;

[0041] Figure 9 This is a schematic diagram of the three-dimensional exploded structure of the rotating rod and rotating shaft of the polishing device for intelligent manufacturing production provided by the present invention;

[0042] Figure 10 This is a schematic diagram of the three-dimensional exploded structure of the moving seat and the feed seat of the polishing device for intelligent manufacturing production provided by the present invention;

[0043] Figure 11 This is a schematic diagram of the three-dimensional exploded structure of the blanking structure of the polishing device for intelligent manufacturing production provided by the present invention.

[0044] In the figure: 1. housing; 2. air outlet; 3. air inlet; 4. mounting bracket; 5. filter; 6. front cover; 7. rear cover; 8. first vent; 9. stator; 10. rotor; 11. support block; 12. second vent; 13. fan; 14. air guide ring; 15. bottom plate; 16. vertical plate; 17. feed inclined plate; 18. first electric push rod; 19. first arc-shaped support plate; 20. rotating shaft; 21. circular groove; 22. first spring; 23. conical top block; 24. first fixed rod; 25. connecting block; 26. movable plate; 27. first push rod; 28. first Second arc-shaped support plate; 29. ​​Inclined surface; 30. Sliding rod; 31. Second spring; 32. Rotating rod; 33. Reciprocating screw; 34. Guide rod; 35. Moving seat; 36. Feed seat; 37. Polishing wheel; 38. Base plate; 39. Threaded rod; 40. Base; 41. Sliding rod; 42. Tension spring; 43. Push plate; 44. Second electric push rod; 45. Second push rod; 46. Inclined groove; 47. Discharge inclined plate; 48. Give way groove; 49. Second fixed rod; 50. Third spring; 51. Guide plate; 52. Spiral groove; 53. Mounting seat; 54. Laser sensor. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below 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.

[0046] Example 1: Reference Figure 1 and Figure 2 , motor, relates to the field of motor processing technology, which is used for multi-angle ventilation and heat dissipation of the rotor 10 and the stator 9. The motor includes a casing 1, and the overall assembly structure of the motor: this electric fan motor adopts a modular assembly method. First, the front cover 6 and the rear cover 7 are rigidly connected by a group of bolts evenly distributed circumferentially to form a closed motor shell structure. The motor shell is completely built into the interior of the casing 1, and an annular air guide channel is formed between the two. The casing 1 adopts an aluminum alloy die-casting process, and the surface is anodized to improve the heat dissipation efficiency. The side wall is provided with symmetrically distributed air inlets 3, and the air inlet 3 is fixed with a mounting frame 4 by bolts. Five detachable filters 5 are integrated on the mounting frame 4. The filter 5 adopts a double-layer structure design, the outer layer is a coarse-effect stainless steel mesh, and the inner layer is an electrostatic adsorption layer. The filtration efficiency reaches the PM2.5 standard.

[0047] Reference Figure 3-Figure 5 In the annular channel between the motor housing and the housing 1, a three-level air guide structure is set:

[0048] Primary Airflow: The output shaft of rotor 10 directly drives an axial-flow fan 13. The fan blades are designed with a forward-curved design and a blade mounting angle of β = 45°, ensuring axial airflow at rated speed. The clearance between fan 13 and the inner wall of housing 1 is controlled at 3mm, ensuring rotational flexibility and reducing air leakage.

[0049] Intermediate air flow guidance: Four trapezoidal support blocks 11 are welded to the inner wall of the housing 1. These support blocks 11 form surface contact with the outer wall of the motor housing, with an axial spacing of 120 mm to ensure radial stability of the motor housing. Guide grooves are provided on the surface of the support blocks 11, with a depth of 2 mm and a width of 5 mm, to guide airflow radially along the motor housing.

[0050] Ultimate air guidance: The outer wall of the rear cover 7 is machined with an annular air guide ring 14. This air guide ring 14 adopts a tapered design, with an inner diameter of Φ120mm at the inlet and Φ80mm at the outlet, and a contraction angle θ = 15°. A 15° bevel is machined on the side of the rear cover 7 near the fan 13, creating a smooth transition with the inlet of the air guide ring 14, ensuring unimpeded airflow.

[0051] Reference Figure 4 and Figure 5 Axial ventilation: Six first vents 8 are located on each side of the front and rear covers 6 and 7. These vents feature a honeycomb structure with an 8mm diameter and 12mm spacing. The effective ventilation area accounts for 35% of the cover area. Axial airflow directly flows through the winding ends of the stator 9 and the bearing system of the rotor 10, removing heat from the rotor.

[0052] Radial ventilation: There is a 0.5mm gap between the air guide ring 14 and the outer wall of the rear end cover 7. According to Bernoulli's principle, when the air volume Q = 0.02m 3 The rear end cover 7 is provided with four second vents 12, which are trapezoidal in design, with an inlet width of 8mm and an outlet width of 12mm, guiding the high-speed airflow to impact the core of the stator 9 in a spiral shape, forming a vortex cooling effect.

[0053] Reference Figure 1 and Figure 2 Six air outlets 2 are located at the top of the housing 1. These outlets adopt a progressively expanding design, increasing their area by 40% compared to the outlet area of ​​the air guide ring 14, effectively reducing airflow resistance. CFD simulation optimization determined the area ratio of the air inlet 3 to the air outlet 2 to be 0.8:1, ensuring pressure balance within the airflow path. Under rated operating conditions, a stable laminar flow is achieved within the motor, reducing the overall drag coefficient to 0.25, a 30% reduction compared to conventional structures.

[0054] Reference Figure 2 and Figure 3The filter 5 is fixed by magnetic attraction, and a NdFeB permanent magnet is embedded in the inner side of the mounting frame 4. The frame of the filter 5 is integrated with a magnetic conductive stainless steel bar to achieve quick disassembly and assembly. Lifting holes are set at both ends of the shell 1 to support vertical installation with M8 bolts or horizontal installation with a U-shaped bracket. The air guide ring 14 adopts a detachable structure and is connected to the rear end cover 7 through three positioning pins to facilitate the cleaning of dust. The rear end cover 7 is provided with an inclined surface on the side close to the fan 13, which is used to guide the air inhaled by the fan 13 into the air guide ring 14, so as to facilitate the ventilation and heat dissipation of the stator 9 at multiple angles in the later stage.

[0055] This implementation method reduces the operating temperature of the stator 9 by 15-20°C, increases the rotor bearing life by 40%, and controls the overall machine noise below 55dB through a multi-stage air guide structure and a dual-circulation heat dissipation design, meeting the needs of long-term high-load operation.

[0056] The operating principle of the electric fan motor is as follows: When the stator 9 is energized, it can drive the rotor 10 to rotate. One of the output shafts of the rotor 10 drives the fan 13 to rotate. The fan 13 draws external air into the housing 1 through the air inlet 3. The air entering the housing 1 enters the front cover 6 and the rear cover 7 through the first vent 8 for preliminary ventilation and heat dissipation.

[0057] In addition, the inclined surface on one side of the rear end cover 7 guides the air entering the housing 1 into the air guide ring 14. Since the gap between the inner wall of one end of the air guide ring 14 and the outer wall of the rear end cover 7 is smaller than the area of ​​the opening at the other end of the air guide ring 14, the air flow speed through the gap increases while the air volume entering the air guide ring 14 remains unchanged. The air can cool the stator 9 from the side through the second vent 12, and the increased wind speed can accelerate the heat dissipation of the stator 9.

[0058] In addition, the filter 5 is installed on one side of the mounting frame 4, so the installation and disassembly of the mounting frame 4 can control the installation and disassembly of the filter 5, which is convenient for cleaning the dust on the filter 5 at a later time.

[0059] Reference Figure 6 The polishing device relates to the field of motor processing technology and is used to polish the rotor in the above-mentioned electric fan motor. The polishing device adopts a modular design as a whole and includes four functional units: automatic loading, precise clamping, grinding wheel polishing, and finished product ejection. The bottom plate 15 serves as the mounting base, and two parallel vertical plates 16 are fixed to its top by bolts. The distance between the two vertical plates matches the length of the rotor 10. A feed ramp 17 is welded to the front side of the bottom plate 15. Its inclination angle is set to 15°, and the surface is provided with a non-slip knurled texture to ensure that the rotor 10 automatically rolls down to the area to be processed between the two vertical plates 16 under the action of gravity.

[0060] Reference Figure 6 and Figure 7The loading mechanism consists of two symmetrically arranged electric push rod assemblies: a first electric push rod 18 is mounted on either side of the base plate 15, and a first curved support plate 19 is welded to the end face of its output shaft. The inner radius of the curved surface matches the outer diameter of the rotor 10 output shaft. When the rotor 10 rolls to the lowest position, the first curved support plate 19 rises vertically under the drive of the electric push rods. Its arc-shaped groove automatically aligns and lifts the rotor 10. The two support plates operate synchronously to ensure that the rotor remains horizontal.

[0061] Reference Figure 7 and Figure 8 The clamping mechanism adopts a double-acting self-centering structure: the rotating shaft 20 is horizontally installed on the upper part of the vertical plate 16 through a bearing, and a circular groove 21 is provided in its inner cavity. The conical top block 23 forms a telescopic fit with the circular groove 21 through a sliding groove slider mechanism. The first spring 22 provides an initial preload force to keep the conical top block 23 in a protruding state, and its cone angle is completely matched with the geometric shape of the positioning groove on the end face of the output shaft of the rotor 10. The movable plate 26 forms a guiding fit with the vertical plate 16 through four sliding rods 30, and the second spring 31 provides a reset force. When the rotor 10 is lifted up, its output shaft end face first contacts the inclined surface 29 at the bottom of the movable plate 26, pushing the movable plate 26 to translate outward. This translation motion drives the connecting block 25 through the first push rod 27, driving the conical top block 23 to overcome the spring pressure and retract into the circular groove 21. After rotor 10 has completely passed through the clamping area, movable plate 26 is reset by second spring 31. Conical top block 23, now activated by first spring 22, pops outward, its tapered end precisely fitting into the positioning slot on rotor 10 for bidirectional axial positioning. The curved surface of second curved support plate 28 forms three-point contact with the output shaft of rotor 10, ensuring stability as the rotor rotates about its axis during polishing.

[0062] The shape of the conical top block 23 can be the following:

[0063] 1. Split-type conical top block (basic form): Consists of four 120° sector blocks, with a cone angle of α = 60° and a V-shaped positioning groove (groove depth 1.5mm) on the inner wall. The split-petal structure can adapt to the tolerance of the rotor output shaft end face, and the clamping concentricity reaches IT6 level.

[0064] 2. Spherical head-conical surface composite top block: The front end has an R5mm hemispherical contact surface, and the rear end retains a 60° cone surface. The spherical head design reduces stress concentration on the rotor end face during clamping and is suitable for rotors made of soft materials such as aluminum alloy.

[0065] 3. Multi-stage conical top block: Contains two levels of cones: the first level has a cone angle of α1 = 45° and a length of L1 = 8mm; the second level has a cone angle of α2 = 30° and a length of L2 = 12mm; the two-stage structure provides rapid positioning in the initial stage of clamping and achieves high-precision locking in the final stage.

[0066] Reference Figure 9 and Figure 10 The top of the vertical plate 16 is rotationally connected to the rotating rod 32 through the support seat, the rotating rod 32 is drivingly connected to the two rotating shafts 20 through the synchronous wheel and the synchronous belt, the rotating rod 32 is driven by the motor to realize the synchronous rotation of the two rotating shafts 20, and the rotating rod 32 drives the rotor 10 to rotate. One side of the vertical plate 16 is rotationally connected to the reciprocating screw rod 33 through the connecting seat, the moving seat 35 is matched with the spiral sliding groove of the reciprocating screw rod 33, the reciprocating screw rod 33 is driven to rotate by the motor, and the moving seat 35 moves back and forth along the guide rod 34. The guide rod 34 is fixed between the two connecting seats, and the moving seat 35 is limited to only linear motion. The feeding seat 36 is installed at the top of the moving seat 35, and the step motor drives the polishing grinding wheel 37 to perform radial feeding. The grinding wheel is a resin bond diamond grinding wheel, and the particle size is #240 according to the material of the rotor 10. In the polishing process, the polishing grinding wheel 37 performs a spiral feeding path under the control of the PLC, and the feeding amount is adjusted in real time through the feedback of the pressure sensor, so that the surface roughness reaches the requirement of Ra0.4μm. The base plate 38 is fixed at the bottom of the feeding seat 36, the threaded rod 39 is screwed into the base plate 38, and one end of the threaded rod 39 is rotationally connected to the moving seat 35. The threaded rod 39 can drive the feeding seat 36 to slide along the moving seat 35, adjust the radial feeding amount of the polishing grinding wheel 37, and control the polishing precision.

[0067] During the polishing operation, the rotating rod 32 drives the rotor 10 to rotate, the reciprocating screw rod 33 drives the moving seat 35 to reciprocate, and the polishing grinding wheel 37 covers each position of the axis of the rotor 10. The threaded rod 39 adjusts the position of the feeding seat 36 according to the process requirement, and realizes polishing processing of different depths.

[0068] Referring to Figure 10 and Figure 11 , the pushing structure: the pushing plate 43 slides between the two vertical plates 16. When the polished rotor 10 triggers the photoelectric sensor, the cylinder drives the pushing plate 43 to move horizontally, and pushes the finished product to the receiving platform. The bottom surface of the pushing plate 43 is coated with a polytetrafluoroethylene coating to reduce the frictional resistance with the rotor 10.

[0069] Referring to Figure 10 and Figure 11 , the pushing structure further includes a second electric push rod 44 fixed to the bottom of the moving seat 35 through the frame, the output shaft of the second electric push rod 44 drives the pushing plate 43 to move linearly along the slide rod 41. The side of the pushing plate 43 close to the second electric push rod 44 is fixed with two slide rods 41, the slide rod 41 is slidably sleeved with the base 40, and the base 40 is fixedly connected with the vertical plate 16. A tension spring 42 is arranged between the base 40 and the pushing plate 43, the tension spring 42 is sleeved on the outer wall of the slide rod 41, and the pushing plate 43 is kept in the initial position without external force. The side of the pushing plate 43 away from the second electric push rod 44 is fixed with two second push rods 45, and the inclined groove 46 on one side of the moving plate 26 is matched with the second push rod 45.

[0070] When the second electric push rod 44 pushes the push plate 43 toward the rotor 10, the second push rod 45 extends into the inclined groove 46 and compresses the inclined surface, driving the movable plate 26 apart and releasing the conical top block 23 from gripping the rotor 10. The rotor 10 then falls onto the guide plate 51, and the push plate 43 continues to push the rotor 10 toward the discharge ramp 47. The discharge ramp 47 is tilted and fixed between the two vertical plates 16 and above the feed ramp 17. The multiple clearance grooves 48 on its top are equipped with guide plates 51. The guide plates 51 are slidably connected to the clearance grooves 48 by second fixing rods 49. A third spring 50 is mounted on the outer wall of the second fixing rod 49, allowing the guide plates 51 to retract into the clearance grooves 48 when pressed by the rotor 10. Once the rotor 10 is released, they return to receive the rotor 10. The rotor 10 rolls outward along the discharge ramp 47, completing the discharge process.

[0071] Through the coordinated operation of various functional modules, this device achieves a fully automated production process for rotors 10, from automatic loading to precise polishing. Key components utilize standardized components for easy maintenance and replacement. The control system integrates a PLC and a touch screen, enabling preset machining parameters for rotors of varying specifications and providing production data traceability. Field measurements show a machining efficiency of 45 pieces per hour, with surface quality consistency maintained within ±0.02mm, significantly improving the automation level and machining quality of intelligent manufacturing production lines.

[0072] Example 2: Reference Figure 9 , an improvement based on Example 1: a spiral groove 52 is provided on the outer wall of the rotating rod 32 (two thread grooves with the same pitch and opposite rotation directions. The two ends are connected by a transition curve), that is, the rotating rod 32 is a reciprocating screw, and the mounting seat 53 cooperates with the spiral groove 52 through its internal slider. The first fixed rod 24 passes through the mounting seat 53 and is fixed to the support seat, limiting the mounting seat 53 to only linear motion. A laser sensor 54 is fixed at the bottom of the mounting seat 53, which reciprocates along the spiral groove 52 as the rotating rod 32 rotates. The laser sensor 54 monitors the distance to the surface of the rotor 10 in real time and feeds back the signal to the control system. The control system adjusts the rotation amount of the threaded rod 39 according to the distance data, controls the feed speed of the feed seat 36, and ensures that the polishing amount is accurate and controllable.

[0073] This structure converts the rotational motion of the rotating rod 32 into linear motion of the mounting seat 53 through the spiral groove 52, causing it to move back and forth, allowing the laser sensor 54 to scan and cover the entire polishing area of ​​the rotor 10, realizing full-cycle polishing depth monitoring, and cooperating with the closed-loop control algorithm to complete high-precision polishing operations.

[0074] The method for using the polishing device for intelligent manufacturing production includes the following steps:

[0075] S1. Multiple rotors 10 to be polished are placed on the feed ramp 17. Since the feed ramp 17 is placed at an angle, when the rotor 10 at the bottom is pushed upward by the first electric push rod 18, the subsequent rotors 10 can be filled in, which is convenient for re-loading later. When the first electric push rod 18 pushes the rotor 10 at the bottom upward, one end of the output shaft on both sides of the rotor 10 cooperates with the inclined surface 29 to push the movable plate 26 outward. The movable plate 26 pushes the conical top block 23 to extend into the circular groove 21 through the cooperation of the first push rod 27 and the connecting block 25. Until both output shafts of the rotor 10 are located above the movable plate 26, the movable plate 26 is reset and moved under the action of the second spring 31, and the movable plate 26 moves to the bottom of the output shaft of the rotor 10. The second arc-shaped support plate 28 can not only support the rotor 10, but also ensure the stability of the subsequent rotation of the rotor 10. The conical top block 23 is also reset and moved under the action of the first spring 22. One end of the conical top block 23 can just extend into the positioning groove at one end of the output shaft of the rotor 10. The conical top blocks 23 on both sides can complete the clamping of the rotor 10.

[0076] S2. When the rotor 10 needs to be polished at multiple angles, the motor drives the rotating rod 32 to rotate, and the rotating rod 32 drives the two rotating shafts 20 to rotate through the synchronous wheel and the synchronous belt. The two rotating shafts 20 drive the rotor 10 to rotate through the conical top block 23, thereby facilitating the polishing wheel 37 to polish the rotor 10 at multiple angles.

[0077] S3. When polishing is required by the polishing wheel 37, the reciprocating screw 33 is driven by the motor to rotate, and the reciprocating screw 33 drives the movable seat 35 to move back and forth, thereby polishing the rotor 10. In addition, the feed seat 36 is driven to move by the rotation of the threaded rod 39 to control the feed amount of the polishing wheel 37 and accurately perform the polishing operation. When the rotating rod 32 rotates, the mounting seat 53 reciprocates under the action of the spiral groove 52. The polishing depth of the rotor 10 during the polishing process can be monitored by the laser sensor 54, which facilitates the subsequent control of the feed amount of the feed seat 36 and accurately completes the polishing operation.

[0078] S4. When polishing is completed and the material is unloaded, the output shaft of the second electric push rod 44 pushes the push plate 43 to move in the direction of the rotor 10. The second push rod 45 extends into the inclined groove 46 and squeezes the inclined surface of the inclined groove 46, which can push the movable plate 26 to move to both sides, thereby controlling the conical top block 23 to disengage from the positioning groove of the output shaft of the rotor 10, releasing the clamping of the rotor 10. At this time, the rotor 10 can fall on the guide plate 51, and then the push plate 43 can continue to push the rotor 10 in the direction of the discharge inclined plate 47. Since the discharge inclined plate 47 is placed at an angle, the rotor 10 rolls outward on the discharge inclined plate 47, which is convenient for the later collection of the rotor 10 and sending it to the next process for processing;

[0079] S5. When the first electric push rod 18 pushes the rotor 10 upward for loading, the rotor 10 collides with the inclined surface of the guide plate 51 and pushes the guide plate 51 to extend into the clearance groove 48 until the rotor 10 is above the guide plate 51. The guide plate 51 resets and moves under the action of the third spring 50, and is used to guide the rotor 10 that has been released from the clamping state to the discharge inclined plate 47 for discharge later.

[0080] However, as is well known to those skilled in the art, the working principles and wiring methods of the first electric push rod 18 and the second electric push rod 44 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0081] The drawings in this application are for illustrative purposes only. The sizes and shapes of the components shown are not intended to be limiting, but are merely for illustrative purposes. In actual implementation, the components may be appropriately configured and adjusted based on specific needs and actual conditions.

[0082] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An electric fan motor, characterized in that: include: A housing (1) is provided with a motor housing assembly composed of a front cover (6) and a rear cover (7); An air guide assembly comprises an axial flow fan (13) provided on the output shaft of the rotor (10), a trapezoidal support block (11) welded to the inner wall of the housing (1), and a tapered air guide ring (14) provided on the rear end cover (7); A ventilation structure comprising a honeycomb-shaped first ventilation opening (8) provided on the front end cover (6) and the rear end cover (7), and a trapezoidal second ventilation opening (12) provided on the rear end cover (7); The air guide ring (14) and the 15° inclined surface of the rear end cover (7) form an airflow acceleration channel, which increases the airflow speed through the gap to 8m / s. The high-speed airflow forms a spiral impact on the stator (9) core through the second ventilation port (12).

2. The electric fan motor according to claim 1, characterized in that: Six gradually expanding air outlets (2) and five air inlets (3) are respectively provided at both ends of the shell (1); the air inlets (3) are installed with double-layer filter screens (5), the outer layer of which is a coarse stainless steel mesh and the inner layer is an electrostatic adsorption layer.

3. The electric fan motor according to claim 2, characterized in that: The filter screen (5) is fixed by a magnetic mounting frame (4), a neodymium iron boron permanent magnet is embedded inside the mounting frame (4), and a magnetic conductive stainless steel strip is integrated into the filter screen frame to form a detachable connection structure.

4. A polishing device for intelligent manufacturing production, used for processing the rotor (10) of the electric fan motor according to any one of claims 1 to 3, characterized in that: include: A bottom plate (15) is provided with an inclined feed ramp (17) and two parallel vertical plates (16); The clamping mechanism comprises a rotating shaft (20), a conical top block (23) slidably connected to the rotating shaft (20), and a movable plate (26) connected to the vertical plate (16) via a sliding rod (30), wherein the bottom of the movable plate (26) is provided with an inclined surface (29) that cooperates with the output shaft of the rotor (10); A driving module comprising a rotating rod (32) for synchronously driving two rotating shafts (20) and a reciprocating screw (33) cooperating with a moving seat (35); The detection unit includes a laser sensor (54) linked to the rotating rod (32) through a spiral groove (52).

5. The polishing device according to claim 4, characterized in that The conical top block (23) is elastically connected to the rotating shaft (20) via a first spring (22), the movable plate (26) is reset via a second spring (31), and a second arc-shaped supporting plate (28) is provided on the top of the movable plate (26).

6. The polishing device according to claim 5, characterized in that A bevel groove (46) is provided on one side of the movable plate (26), and a second push rod (45) of the push structure is slidably matched with the bevel groove (46), and the second push rod (45) is fixed on the push plate (43).

7. The polishing device according to claim 4, characterized in that The reciprocating screw (33) is slidably matched with the movable seat (35); the movable seat (35) is provided with a feed seat (36) adjusted by a threaded rod (39); and the feed seat (36) is equipped with a polishing grinding wheel (37).

8. The polishing device according to claim 4, characterized in that A material discharging inclined plate (47) is provided between the vertical plates (16), and a material guide plate (51) is provided on the material discharging inclined plate (47) and is reset by a third spring (50), and the material guide plate (51) is provided with a guiding slope.

9. The polishing device according to claim 4, characterized in that The elastic coefficient of the third spring (50) is 30 N / mm, and the inclination angle of the guide slope of the guide plate (51) is 30°.

10. A method for using a polishing device for intelligent manufacturing production, applied to the polishing device for intelligent manufacturing production according to claim 9, characterized in that: The following steps are involved: S1. The rotor (10) is placed on the inclined feed ramp (17). The first electric push rod (18) pushes the bottom rotor (10) upward, and the subsequent rotors (10) automatically fill the position. When the rotor (10) rises, the output shafts on both sides push the moving plate (26), and then the conical top block (23) extends into the circular groove (21) through the cooperation of the moving plate (26), the first push rod (27) and the connecting block (25) to clamp the rotor (10), thereby ensuring the stability of the rotor (10). S2, the motor drives the rotating rod (32), which drives the rotating shaft (20) to rotate through the synchronous wheel and the synchronous belt, and then rotates the rotor (10) through the conical top block (23), so that the polishing wheel (37) can polish the rotor (10) at multiple angles; S3, the motor drives the reciprocating screw (33) to make the movable seat (35) move back and forth to perform polishing; the threaded rod (39) controls the movement of the feed seat (36) to accurately adjust the polishing feed amount; when the rotating rod (32) rotates, the mounting seat (53) moves back and forth under the action of the spiral groove (52), and the laser sensor (54) monitors the polishing depth to accurately control the polishing operation; S4. After polishing is completed, the second electric push rod (44) pushes the push plate (43), and the movable plate (26) moves to both sides through the second push rod (45) and the inclined groove (46), thereby releasing the clamping of the conical top block (23) on the rotor (10); the rotor (10) falls on the guide plate (51), and the push plate (43) continues to push it toward the discharge inclined plate (47), and the rotor (10) rolls along the inclined plate, which is convenient for collection and subsequent processing; S5. When the first electric push rod (18) pushes the rotor (10) to move upward, the rotor (10) pushes the guide plate (51) to extend into the clearance groove (48); after the rotor (10) is in place, the guide plate (51) is reset under the action of the third spring (50) to guide the unclamped rotor (10) to the discharge inclined plate (47) for discharge.

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