Slot commutator auxiliary mounting structure

Abstract

This invention relates to the field of motor component manufacturing technology, specifically disclosing an auxiliary installation structure for a slotted commutator, including a frame and a fixing frame. The fixing frame is bolted to the center of the top of the frame, and a conveyor frame is located inside the frame. A servo electric cylinder drives the slider to linearly displace, and an eccentric wheel enables multiple adjusting plates to automatically align according to the angle of the commutator's top conical surface, forcibly aligning the commutator's central axis to coincide with the equipment's main shaft. This achieves a higher precision automatic alignment effect than traditional outer circle positioning. Furthermore, the limiting block automatically fine-tunes its position based on the actual outer diameter of the workpiece when contacting the commutator's outer circumference, ensuring uniform distribution of multi-point contact force. This avoids crushing of the insulating substrate or deformation of the copper sheet caused by rigid clamping, and effectively absorbs the impact of the reaction force generated during pressing, preventing slight slippage of the slotted commutator and thus ensuring the roundness and structural integrity of the finished commutator.

Description

Technical Field

[0001] This invention relates to the field of motor component manufacturing technology, specifically to a slotted commutator auxiliary mounting structure. Background Technology

[0002] As the core component for current commutation in a motor, the slotted commutator mainly consists of radially arranged copper commutator segments, mica insulating sheets embedded between adjacent commutator segments, and a slotted steel inner sleeve for mating with the motor shaft. The outer circumference or inner wall of the steel inner sleeve has axially extending slots, commonly trapezoidal, dovetail, or rectangular slots. These slots secure the commutator segments, preventing them from falling off or rotating during high-speed operation and ensuring stable commutator operation. Since the assembly precision of the slotted commutator directly determines the motor's operational stability, commutation reliability, and service life, it requires extremely high coaxiality and circumferential positioning accuracy of the motor shaft. Furthermore, the commutator segments and mica insulating sheets are relatively brittle and have weak impact resistance. Additionally, the commutator and motor shaft are often assembled using an interference fit. Therefore, the installation process of the slotted commutator requires strict control of alignment, pressing force, and circumferential angles; otherwise, assembly defects are highly likely to occur.

[0003] Existing commutator technologies lack effective multi-degree-of-freedom pre-positioning and precise centering methods during the loading process, often relying on manual visual inspection or simple V-block positioning. This makes it difficult to eliminate coaxiality deviations between the commutator's inner bore and the output shaft, leading to misalignment during press-fitting and subsequent damage to the commutator insulator or copper sheets. Secondly, existing equipment generally lacks a deep cleaning process for the motor output shaft keyway, spline groove, and commutator mounting inner bore. Residual metal debris, oil, or dust on the surface can become embedded in the contact surface under interference fit pressure, causing microscopic pore corrosion or a decrease in electrical insulation performance, severely affecting product qualification rate.

[0004] To address this, we propose an auxiliary installation structure for slotted commutators. Summary of the Invention

[0005] To address the above issues and overcome the shortcomings of existing technologies, this invention provides a slotted commutator auxiliary installation structure. A servo electric cylinder drives the slider to linearly displace, and an eccentric wheel enables multiple adjusting plates to automatically align according to the angle of the commutator's top conical surface, forcibly aligning the commutator's central axis with the equipment's main shaft. This achieves a higher precision automatic alignment than traditional outer circle positioning. Simultaneously, a flexible buffer pad with a specific hardness is placed on the surface of the mounting limit block, and a spring-loaded floating seat is introduced at the drive connection, creating a clamping interface with radial elastic compensation capabilities. This allows the limit block to automatically fine-tune its position according to the actual outer diameter of the workpiece when contacting the commutator's outer circumference, ensuring uniform distribution of multi-point contact force. This avoids crushing of the insulating substrate or deformation of the copper sheet caused by rigid clamping, effectively absorbs the impact of the reaction force generated during pressing, and prevents slight slippage of the workpiece, thereby ensuring the roundness and structural integrity of the finished commutator.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary installation structure for a slotted commutator, comprising a frame and a mounting bracket. The mounting bracket is bolted to the center of the top of the frame, and a conveyor frame is provided inside the frame for conveying the motor to be installed with the slotted commutator. An auxiliary installation assembly is provided above the interior of the mounting bracket for automatically assembling the motor output shaft and the slotted commutator. A positioning and feeding assembly is also provided on one side of the mounting bracket for pre-positioning the slotted commutator. A pre-treatment assembly is also provided on the top of the mounting bracket for cleaning the surface of the motor output shaft before installation.

[0007] The auxiliary installation components include a sliding frame and a movable mounting frame. Servo linear slides are fixedly mounted on both sides of the upper part of the fixed frame, and the sliding frame slides between the two servo linear slides. A movable mounting frame is movably mounted below the sliding frame. A centering mounting frame is fixedly mounted at the bottom of the movable mounting frame, and the top of the inner wall of the centering mounting frame has several grooves. A centering slider slides at the bottom of each groove, and a centering adjustment plate is rotatably mounted on one side of each centering slider. An adjustment block is fixedly mounted on one side of the centering adjustment plate. A rotating shaft is rotatably mounted on one side of the centering slider via a built-in motor, and the surface of the rotating shaft is fixedly connected to the inside of the adjustment block. Centering adjustment servo cylinders are fixedly mounted around the perimeter of the centering mounting frame, and the drive ends of the centering adjustment servo cylinders are fixedly connected to one side of each of the centering sliders.

[0008] The beneficial effects achieved by the present invention using the above structure are as follows:

[0009] 1. By using a servo-driven positioning frame in the front-to-back direction and an electric slider positioning frame in the left-to-right direction, the motor is spatially locked in all directions. This completely eliminates the reference error caused by uneven table surface or foreign objects in the traditional bottom support method. It ensures that the motor output shaft is absolutely stationary throughout the cleaning and pressing process, and eliminates the coaxiality deviation caused by the shaking of the base from the source. This ensures that the pressing path of the subsequent commutator always coincides with the axis of the output shaft, which greatly improves the first-time success rate of assembly.

[0010] 2. By driving the slider linearly with a servo electric cylinder and using an eccentric wheel to automatically align multiple adjusting plates according to the angle of the commutator's top conical surface, the commutator's central axis is forcibly aligned with the machine's main shaft, achieving a higher precision automatic centering effect than traditional external circular positioning. Simultaneously, a flexible buffer pad with a specific hardness is placed on the surface of the mounting limit block, and a floating seat containing a spring is introduced at the drive connection, creating a clamping interface with radial elastic compensation capability. This allows the limit block to automatically fine-tune its position according to the actual outer diameter of the workpiece when contacting the commutator's outer circumference, ensuring uniform distribution of multi-point contact force. This avoids the crushing of the insulating substrate or deformation of the copper sheet caused by rigid clamping, and effectively absorbs the reaction force impact generated during pressing, preventing slight slippage of the workpiece, thereby ensuring the roundness and structural integrity of the finished commutator.

[0011] 3. In the commutator cleaning process, the interference fit between the annular protrusion and the sealing ring forms a closed chamber. Combined with a unidirectional airflow grille, this guides the airflow to form a high-speed spiral vortex. Centrifugal force is used to peel off micro-dust adhering to the inner wall of the bore and suck it out with negative pressure, solving the problems of airflow short-circuiting and secondary dust fallback in open-type blowing. In the motor shaft cleaning process, the inclined air outlets form a rotating downward laminar flow curtain. The shearing force and centrifugal force generated by the spiral downward airflow along the output shaft surface can penetrate deep into the bottom of the keyway and spline groove, forcibly throwing out particulate impurities from dead corners and collecting them from the bottom negative pressure zone. Through this dual deep cleaning strategy, the commutator inner bore and motor output shaft achieve extremely high cleanliness before pressing, avoiding microscopic damage, increased contact resistance, or stress concentration caused by foreign objects embedding in the contact surface. This significantly improves the electrical performance reliability and long-term service life of the finished motor. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of an auxiliary installation structure for a slotted commutator according to an embodiment of the present invention;

[0014] Figure 2This is a schematic diagram of the structure of the frame, positioning frame one, and positioning frame two according to an embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram of the internal structure of the fixing frame according to an embodiment of the present invention;

[0016] Figure 4 This is a schematic diagram of the internal structure of the centering and fixing frame according to an embodiment of the present invention;

[0017] Figure 5 This is a schematic diagram of the centering slider and centering adjustment plate structure according to an embodiment of the present invention;

[0018] Figure 6 This is a schematic diagram of the movable mounting bracket and centering fixing bracket structure according to an embodiment of the present invention;

[0019] Figure 7 This is a schematic diagram of the internal structure of the feeding and assembly frame according to an embodiment of the present invention;

[0020] Figure 8 This is a schematic diagram of the feeding frame and dust extraction interface structure according to an embodiment of the present invention;

[0021] Figure 9 This is a schematic diagram of the internal structure of the pretreatment cover in an embodiment of the present invention.

[0022] In the diagram, 1. Frame; 2. Fixing frame; 3. Auxiliary installation components; 4. Positioning and feeding components; 5. Installation pretreatment components; 6. Servo electric cylinder one; 7. Positioning frame one; 8. Positioning frame two; 9. Servo linear slide; 10. Support frame; 11. Sliding frame; 12. Movable mounting frame; 13. Lifting servo electric cylinder; 14. Mounting slide bar; 15. Centering fixing frame; 16. Slide groove; 17. Centering slider; 18. Centering adjustment plate; 19. Adjusting block; 20. Rotating shaft; 21. Centering adjustment servo electric cylinder; 22. Limit. 23. Positioning servo cylinder; 24. Limiting slide bar; 25. Installing limit block; 26. Cleaning nozzle; 27. Cleaning servo cylinder; 28. Air jet interface; 29. ​​Installing pressure block; 30. Installing servo cylinder; 31. Feeding frame; 32. Lifting platform; 33. Feeding servo cylinder; 34. Dust suction port; 35. Calibration servo cylinder; 36. Center calibration block; 37. Pretreatment hood; 38. Pretreatment servo cylinder; 39. Air blowing port; 40. Air blowing interface; 41. Dust exhaust port; 42. Dust exhaust interface. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] Example 1

[0026] Please see Figures 1 to 9 As shown, an auxiliary installation structure for a slotted commutator includes: a frame 1 and a fixed frame 2. The fixed frame 2 is bolted to the middle of the top of the frame 1, and a conveyor frame is provided inside the frame 1 for conveying the motor that will be installed with the slotted commutator. An auxiliary installation component 3 is provided on the upper part inside the fixed frame 2 for automatically assembling the motor output shaft and the slotted commutator. A positioning and feeding component 4 is also provided on one side of the fixed frame 2 for pre-positioning the slotted commutator and improving the installation and feeding efficiency of the slotted commutator. An installation pretreatment component 5 is also provided on the top of the fixed frame 2 for cleaning the surface of the motor output shaft before installation to ensure the installation accuracy between the motor output shaft and the slotted commutator.

[0027] Furthermore, servo electric cylinders 6 are fixedly installed on the front and rear sides inside the frame 1, and positioning frames 7 are fixedly installed on the drive ends of the servo electric cylinders 6 on the front and rear sides; positioning frames 8 are slidably installed on both sides of the two positioning frames 7 via electric sliders; when installing the slotted commutator and the motor output shaft, the motor to be installed is transported to the space between the two positioning frames 7 by the conveyor frame, and the positioning frames 7 are pushed to the front and rear sides of the motor by the drive ends of the servo electric cylinders 6, and the two positioning frames 8 on one side of the two positioning frames 7 clamp and position the left and right sides of the motor to ensure the stability of the motor output shaft when it is installed with the slotted commutator.

[0028] It should be further explained that a rigid basic frame is constructed by frame 1 and fixed frame 2. Servo electric cylinder 6 drives positioning frame 7 to apply clamping force from the front and rear directions of the motor. At the same time, electric slider drives positioning frame 8 to limit the motor in four directions from the left and right sides, forming a stable spatial locking state, which improves the assembly accuracy of the motor output shaft and slotted commutator.

[0029] Example 2

[0030] Specifically, the auxiliary installation component 3 includes a sliding frame 11 and a movable mounting frame 12. Servo linear slides 9 are fixedly installed on both sides of the upper part of the fixed frame 2, and the sliding frame 11 is slidably installed between the two servo linear slides 9. Support frames 10 are fixedly installed on both sides of the front of the fixed frame 2, and the two sides of the sliding frame 11 are slidably connected to one side of the two support frames 10 respectively.

[0031] A movable mounting frame 12 is movably provided below the sliding frame 11, and lifting servo cylinders 13 are fixedly provided on both sides of the top of the sliding frame 11. The drive ends of the two lifting servo cylinders 13 are fixedly connected to the top of the movable mounting frame 12. Mounting slide rods 14 are fixedly provided around the top of the movable mounting frame 12, and the top ends of the four mounting slide rods 14 are slidably connected to the inside of the sliding frame 11. The movable mounting frame 12 is controlled to slide downward by the drive ends of the two lifting servo cylinders 13, and the top ends of the four mounting slide rods 14 are slidably connected to the inside of the sliding frame 11 to ensure the stability of the movable mounting frame 12 during the lifting process.

[0032] Furthermore, a centering bracket 15 is fixedly installed at the bottom of the movable mounting frame 12, and a plurality of sliding grooves 16 are provided on the top of the inner wall of the centering bracket 15. A centering slider 17 is slidably installed at the bottom of each sliding groove 16. A centering adjustment plate 18 is rotatably installed on one side of each centering slider 17. An adjustment block 19 is fixedly installed on one side of the centering adjustment plate 18. A rotating shaft 20 is rotatably installed on one side of the interior of the centering slider 17 via a built-in motor, and the surface of the rotating shaft 20 is fixedly connected to the interior of the adjustment block 19. The centering bracket 15 has a central support around its interior. Each component is fixedly equipped with a centering adjustment servo cylinder 21, and the drive ends of several centering adjustment servo cylinders 21 are respectively fixedly connected to one side of several centering sliders 17. Among them, the adjustment block 19 is an eccentric wheel structure, whose rotation center coincides with the axis of the rotating shaft 20 but the geometric center is offset. When the centering adjustment servo cylinder 21 drives the centering slider 17 to move linearly along the slide groove 16, the side wall of the centering slider 17 abuts against the eccentric curved surface of the adjustment block 19, forcing the adjustment block 19 to rotate around the rotating shaft 20, thereby causing the centering adjustment plate 18 to produce an angular deflection.

[0033] Preferably, the bottom of the slide groove 16 is provided with a guide slope, and the bottom of the centering slider 17 is provided with a matching roller. The horizontal displacement of the slider is converted into the swing of the centering adjustment plate 18 around the rotation shaft 20. The rotation shafts 20 of all the centering adjustment plates 18 are connected to each other through a synchronous belt or linkage mechanism to ensure that the change in the tilt angle of each centering adjustment plate 18 is completely consistent, so as to achieve uniform clamping of the conical surface of the slot-type commutator.

[0034] It should be noted that several slide grooves 16 are arranged at equal angles about the central axis of the centering bracket 15. The top of the centering slider 17 is controlled to slide inside the slide groove 16 by the drive end of several centering adjustment servo cylinders 21. The tilt angle of the centering adjustment plate 18 is adjusted according to the top cone angle of the slot commutator, so that several centering sliders 17 and centering adjustment plates 18 are adjusted synchronously. After the top of the slot commutator is inserted into the centering bracket 15, several centering adjustment plates 18 are used in conjunction with the top cone of the slot commutator to achieve rapid positioning of the slot commutator inside the centering bracket 15. Since several centering adjustment plates 18 are all adjusted synchronously relative to the central axis of the centering bracket 15, after the slot commutator is positioned inside the centering bracket 15, the central axis of the slot commutator coincides with the central bearing of the centering bracket 15.

[0035] Furthermore, several mounting limit blocks 24 are movably arranged at the lower part of the centering bracket 15, and several limit servo cylinders 22 are fixedly arranged inside the centering bracket 15. The drive ends of the several limit servo cylinders 22 are respectively fixedly connected to one side of the mounting limit block 24. Two limit slide rods 23 are fixedly arranged on one side of each mounting limit block 24, and one end of the several limit slide rods 23 is slidably connected to the inside of the centering bracket 15.

[0036] Specifically, a flexible buffer pad is attached to the side of the mounting limit block 24 facing the slot commutator. This flexible buffer pad is made of high-temperature resistant and wear-resistant engineering plastic or silicone material, with a Shore A hardness of 60-80 degrees, to avoid damage to the insulating substrate or copper sheet surface of the slot commutator during clamping. At the same time, a pressure sensor is also installed inside the flexible buffer pad to monitor the contact pressure of each mounting limit block 24 on the slot commutator in real time. Furthermore, the mounting limit block 24 is connected to the drive end of the limit servo cylinder 22 through a floating connecting seat. The floating connecting seat is equipped with a limit spring, so that the mounting limit block 24 has a radial floating margin of ±0.5mm when contacting the outer circumference of the slot commutator. This can adaptively compensate for the manufacturing tolerance of the outer diameter of the slot commutator, ensuring uniform force when multiple points are in contact simultaneously, and avoiding elliptical deformation of the slot commutator due to single-point overpressure.

[0037] Furthermore, mounting servo cylinders 29 are fixedly installed around the top of the movable mounting bracket 12, and mounting blocks 28 are movably installed inside the centering mounting bracket 15. The drive ends of the four mounting servo cylinders 29 are fixedly connected to the top of the mounting blocks 28. The mounting blocks 28 adopt a structure design with a through hole in the center. The drive ends of the mounting servo cylinders 29 are used to control the downward movement of the mounting blocks 28, and the mounting blocks 28 are used to install and connect the slotted commutator and the motor output shaft.

[0038] It should be noted that after centering the top of the slot commutator using several centering adjustment plates 18, the drive ends of several limit servo electric cylinders 22 are used to control the installation limit blocks 24 to approach the surface of the slot commutator. By having several installation limit blocks 24 contact the outer peripheral surface of the slot commutator, the positional stability of the slot commutator during the installation process is ensured, and positional deviation is avoided when the slot commutator is pressed into place.

[0039] It should be further explained that the centering slider 17 is driven to move linearly along the slide groove 16 by the centering adjustment servo cylinder 21. The linear motion is converted into the rotational motion of the rotating shaft 20 by the side wall of the slider abutting against the eccentric curved surface of the adjustment block 19 or the gear and rack transmission pair. This causes the centering adjustment plate 18 to swing synchronously around the axis to hold the top conical surface of the slotted commutator, realizing automatic high-precision centering based on the conical surface fit. At the same time, the Shore A60 to 80 degree flexible buffer pad set on the surface of the installation limit block 24, combined with the limit spring in the internal floating connection seat, realizes the adaptive clamping of the slotted commutator. It can automatically compensate for the manufacturing tolerance of the outer diameter of the commutator and ensure uniform force when in multi-point contact, preventing rigid clamping from damaging the insulating substrate or causing the copper sheet to deform into an ellipse. With the through hole pressure design of the installation pressure block 28, the entire auxiliary installation process ensures that the central axis of the commutator is strictly coincident with the central axis of the centering fixing frame 15, and avoids the micro-movement deviation of the workpiece during the high pressure pressing process, which significantly improves the dynamic balance performance and structural integrity of the finished commutator.

[0040] Example 3

[0041] Specifically, the positioning and feeding assembly 4 includes a feeding support frame 30 and a lifting platform 31. The feeding support frame 30 is fixedly installed on the front side inside the fixed frame 2, and the lifting platform 31 is movably installed inside the feeding support frame 30. Feeding servo cylinders 32 are fixedly installed on both sides of the bottom of the feeding support frame 30, and the drive ends of the two feeding servo cylinders 32 are fixedly connected to the bottom of the lifting platform 31. A dust suction port 33 is provided in the middle of the top of the lifting platform 31, and a dust suction interface 34 communicating with the inside of the dust suction port 33 is provided at the bottom of the lifting platform 31. A dust collection box is provided on the front of the frame 1, and the inside of the dust collection box is connected to the inside of the dust suction port 33 through a dust suction pump.

[0042] Furthermore, the loading frame 30 has several movably arranged center correction blocks 36 inside, and several correction servo cylinders 35 are also fixedly arranged inside the loading frame 30. The drive ends of the several correction servo cylinders 35 are respectively fixedly connected to one side of the several center correction blocks 36.

[0043] Furthermore, the top of the feeding frame 30 is provided with an annular groove, and the bottom of the centering frame 15 is provided with an annular protrusion that mates with the inside of the annular groove. Through the mating connection between the annular groove and the annular protrusion, the centering frame 15 and the feeding frame 30 are connected to form a closed cavity. After the slotted commutator is placed inside the feeding frame 30, the assembly inner hole of the slotted commutator is cleaned. Among them, an annular sealing ring is embedded in the annular groove at the top of the feeding frame 30, and the surface of the annular protrusion at the bottom of the centering frame 15 is precision ground. The grinding process is as follows: When the centering and fixing frame 15 is pressed down to the feeding and mating frame 30, the annular protrusion squeezes the annular sealing ring and causes elastic deformation, filling the gap between the two. This forms an airtight cleaning chamber between the inner wall of the centering and fixing frame 15, the inner wall of the feeding and mating frame 30, and the top surface of the lifting platform 31. In addition, a one-way flow guide grille is provided at the entrance of the dust suction port 33 to prevent the high-pressure airflow from directly impacting the dust suction pump. At the same time, it guides the airflow to form a spiral vortex from top to bottom in the chamber, ensuring that the micro-dust adhering to the inner wall of the slotted commutator is peeled off by the airflow and flows into the dust suction port 33 with the vortex.

[0044] Furthermore, a cleaning servo cylinder 26 is fixedly installed at the center of the top of the movable mounting bracket 12, and the drive end of the cleaning servo cylinder 26 extends into the interior of the centering mounting bracket 15. A cleaning nozzle 25 is movably installed inside the centering mounting bracket 15, and the top of the cleaning nozzle 25 is fixedly connected to the drive end of the cleaning servo cylinder 26. An air jet interface 27 is also fixedly installed at the top of the movable mounting bracket 12, and the bottom end of the air jet interface 27 is connected to several air jet ports at the bottom of the cleaning nozzle 25 through an elastic conduit. The several air jet ports at the bottom of the air jet interface 27 are all inclined.

[0045] It should be noted that after the slotted commutator is placed inside the loading assembly frame 30, the drive ends of several calibration servo cylinders 35 are used to control the center calibration block 36 to move closer to the outer circumference of the slotted commutator. The center calibration blocks 36 are used to center-calibrate the position of the slotted commutator at the top of the lifting platform 31, ensuring that the central axis of the slotted commutator coincides with the central axis of the lifting platform 31. Then, by controlling the bottom of the centering fixing frame 15 to connect with the top of the loading assembly frame 30, the drive end of the loading servo cylinder 32 controls the lifting platform 31 to rise. The installation limit block 24 inside the centering fixing frame 15 then adjusts the slotted commutator... The surface of the device is synchronously limited. At this time, several center correction blocks 36 are reset. The lifting platform 31 is moved upward by the drive end of the feeding servo cylinder 32 until the top conical surface of the slot commutator contacts one side of several centering adjustment plates 18, thus completing the center positioning of the slot commutator. The cleaning nozzle 25 is moved downward by the drive end of the cleaning servo cylinder 26. The cleaning nozzle 25 extends into the mounting hole of the slot commutator and sprays air downward for cleaning. At the same time, the dust suction port 33 inside the lifting platform 31 sucks out the dust and impurities that are cleaned down, thus completing the cleaning treatment of the mounting hole of the slot commutator before installation.

[0046] It should be further explained that the lifting platform 31 is driven upward by the feeding servo cylinder 32, which causes the annular protrusion at the bottom of the centering fixing frame 15 to squeeze the annular sealing ring in the groove of the feeding mating frame 30 to produce elastic deformation, thereby forming an airtight cleaning chamber between the two. In this closed space, the cleaning nozzle 25 extends into the inner hole of the commutator to spray high-pressure airflow. With the help of the unidirectional guide grid at the inlet of the dust suction port 33, the airflow is guided to form a spiral vortex from top to bottom. The combined effect of centrifugal force and negative pressure suction is used to peel off and discharge the micro dust attached to the inner hole wall. At the same time, the center correction block 36 performs coarse positioning of the commutator in the initial stage. After the chamber is closed, it is reset to avoid interfering with the precise centering. This structural design that integrates pre-positioning, sealing closure and vortex cleaning effectively solves the problems of airflow short circuit, secondary dust re-entrainment and cleaning dead corners in traditional open cleaning. It ensures that the inner hole of the commutator installation meets the cleanliness standard before pressing and solves the problem of abnormal fitting clearance or electrical insulation hazards caused by impurities.

[0047] Example 4

[0048] Specifically, the pretreatment assembly 5 includes a pretreatment cover 37. The pretreatment cover 37 is movably mounted on the top of the mounting bracket 2, and the bottom of the pretreatment cover 37 extends into the interior of the mounting bracket 2. Pretreatment servo cylinders 38 are fixedly mounted on both sides of the top of the mounting bracket 2, and the drive ends of the two pretreatment servo cylinders 38 are fixedly connected to both sides of the pretreatment cover 37. Several air blowing ports 39 are provided above the interior of the pretreatment cover 37, and an air blowing interface 40 is fixedly mounted on the top of the pretreatment cover 37, with the interior of the air blowing interface 40 communicating with the interior of the several air blowing ports 39. Several dust discharge ports 41 are provided below the interior of the pretreatment cover 37, and a dust discharge interface 42 is fixedly mounted above one side of the pretreatment cover 37, with the interior of the dust discharge interface 42 communicating with the interior of the several dust discharge ports 41. The bottom end of the pretreatment cover 37 has an opening, and the air blowing direction of the several air blowing ports 39 is... The design adopts a downward tilt; several air inlets 39 are spirally distributed along the inner wall of the pretreatment hood 37, and the jet axis of each air inlet 39 forms an angle of 30°-45° with the axis of the motor output shaft, forming a rotating downward laminar flow air curtain; this air curtain spirals downward along the surface of the motor output shaft, using centrifugal force to throw out particulate impurities in the keyway and spline groove; the dust discharge port 41 is set around the bottom of the pretreatment hood 37, and the inlet cross-section of the dust discharge port 41 is larger than the total outlet cross-section of the air inlets 39, so as to form a negative pressure collection area at the bottom of the hood; the impurities stripped by the air curtain fall quickly into the dust discharge port 41 under the combined action of gravity and negative pressure, preventing the impurities from rebounding back to the surface of the motor output shaft; in addition, a flexible dust curtain is provided at the opening of the pretreatment hood 37. When the hood descends to cover the motor output shaft, the dust curtain adheres tightly to the motor housing, further blocking external airflow interference and dust overflow.

[0049] It should be noted that after the motor to be installed is centered by positioning frame 7 and positioning frame 8, the pretreatment cover 37 is moved downward by the drive end of the pretreatment servo cylinder 38 until the pretreatment cover 37 covers the output shaft of the motor. At this time, cleaning gas is introduced into the air blowing port 39 through the air blowing interface 40. At the same time, the dust exhaust interface 42 cooperates with the dust exhaust port 41 to extract the dust and impurities generated during cleaning, thus completing the cleaning treatment of the motor output shaft before installation, which facilitates the subsequent installation accuracy between the slotted commutator and the motor output shaft.

[0050] It should be further explained that the pre-treatment servo cylinder 38 drives the pre-treatment cover 37 downward to cover the motor output shaft, and the flexible dustproof curtain at the cover opening is in close contact with the motor housing to form a semi-enclosed working environment. The spirally distributed air blowing ports 39 inside the cover spray air at an angle of 30 to 45 degrees, forming a rotating downward laminar flow air curtain. The centrifugal force generated by the air curtain spiraling downward along the surface of the output shaft can force out particulate impurities deep in the keyway and spline groove. Subsequently, the impurities are quickly discharged outside the cover under the dual action of gravity and the negative pressure collection area formed by the bottom dust discharge port 41. Compared with the traditional direct blowing mode, it can more effectively clean the gaps of complex geometric structures. At the same time, the cooperation of the flexible dustproof curtain and the negative pressure dust discharge system blocks the dust overflow path, significantly improving the cleaning efficiency and quality of the motor output shaft surface. This provides an ideal surface condition for the subsequent interference fit between the slotted commutator and the motor output shaft, greatly reducing the risk of assembly stress concentration or insufficient connection strength caused by surface foreign objects.

[0051] Example 5

[0052] Specifically, this embodiment discloses an installation method for an auxiliary mounting structure for a slotted commutator, including the following steps:

[0053] Step 1: The conveyor transports the motor to be assembled to the predetermined work position inside the frame 1. Then, the servo electric cylinder 6 drives the positioning frame 7 to approach the motor from the front and rear sides. At the same time, the electric slider drives the positioning frame 8 to clamp the motor from the left and right sides, forming a four-way stable spatial locking state.

[0054] Step 2: The pre-treatment servo cylinder 38 at the top of the fixed frame 2 drives the pre-treatment cover 37 to move downward until it covers the motor output shaft. At this time, the flexible dustproof curtain at the cover opening is tightly attached to the motor housing to form a semi-closed environment. High-pressure gas is introduced into the spirally distributed air blowing port 39 through the air blowing port 40, forming a rotating downward laminar flow air curtain to wash the surface of the output shaft and the keyway groove. The impurities that are peeled off are extracted through the dust discharge port 41 and dust discharge port 42 at the bottom under the action of gravity and negative pressure. After the surface cleaning of the motor output shaft is completed, the pre-treatment cover 37 resets and rises.

[0055] Step 3: Place the slotted commutator on the lifting platform 31 inside the loading frame 30. The calibrating servo cylinder 35 drives the center calibration block 36 to perform preliminary radial calibration of the commutator. Then, the lifting servo cylinder 13 in the auxiliary installation assembly 3 drives the centering fixing frame 15 to descend, so that the annular protrusion at its bottom squeezes the annular sealing ring in the groove of the loading frame 30 to form an airtight clean chamber.

[0056] Step 4: The loading servo cylinder 32 drives the lifting platform 31 to rise, so that the top conical surface of the slotted commutator contacts the centering adjustment plate 18. At the same time, the cleaning servo cylinder 26 drives the cleaning nozzle 25 to extend into the inner hole of the commutator and spray airflow. Combined with the spiral vortex generated by the dust suction port 33, the dust in the inner hole is thoroughly removed. After cleaning, the lifting platform 31 continues to rise until the commutator is completely inside the centering fixing frame 15. The center correction block 36 then resets and is released.

[0057] Step 5: The centering adjustment servo cylinder 21 drives the centering slider 17 to move along the slide groove 16. Through the eccentric transmission or gear meshing of the adjustment block 19, all the centering adjustment plates 18 swing synchronously. Using the principle of conical surface fit, the slot-shaped commutator is automatically centered to be coaxial with the centering fixing frame 15. Then, the limit servo cylinder 22 pushes the installation limit block 24 with flexible buffer pad to press against the outer circumference of the commutator. The elasticity of the floating connecting seat is used to compensate for the tolerance to achieve multi-point uniform clamping.

[0058] Step 6: The sliding frame 11 moves to directly above the motor output shaft under the drive of the servo linear slide 9. The lifting servo cylinder 13 drives the movable mounting frame 12 to descend as a whole, aligning the precisely positioned slotted commutator with the cleaned motor output shaft. Then, the mounting servo cylinder 29 drives the mounting pressure block 28 to apply downward pressure, smoothly pressing the slotted commutator into the motor output shaft to complete the interference fit installation, thus completing the installation operation between the slotted commutator and the motor output shaft.

[0059] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0062] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An auxiliary installation structure for a slotted commutator, comprising a frame (1) and a mounting bracket (2), wherein the mounting bracket (2) is bolted to the middle of the top of the frame (1), and a conveyor frame is provided inside the frame (1) for conveying a motor that is installed in conjunction with the slotted commutator, characterized in that, An auxiliary installation component (3) is provided on the upper part of the fixed frame (2) for automatic assembly between the motor output shaft and the slot commutator; a positioning and feeding component (4) is also provided on one side of the fixed frame (2) for pre-positioning the slot commutator; and an installation pre-treatment component (5) is also provided on the top of the fixed frame (2) for cleaning the surface of the motor output shaft before installation. The auxiliary installation component (3) includes a sliding frame (11) and a movable mounting frame (12). Servo linear slides (9) are fixedly installed on both sides of the upper part of the fixed frame (2), and the sliding frame (11) is slidably installed between the two servo linear slides (9). The movable mounting frame (12) is slidably installed below the sliding frame (11). A centering fixing frame (15) is fixedly installed at the bottom of the movable mounting frame (12), and a number of sliding grooves (16) are provided on the top of the inner wall of the centering fixing frame (15). A centering slider (17) is slidably installed at the bottom of the number of sliding grooves (16). Each centering slider (17) has a centering adjustment plate (18) rotatably mounted on one side; an adjustment block (19) is fixedly mounted on one side of the centering adjustment plate (18); a rotating shaft (20) is mounted on one side of the centering slider (17) via a built-in motor, and the surface of the rotating shaft (20) is fixedly connected to the inside of the adjustment block (19); centering adjustment servo cylinders (21) are fixedly mounted on all four sides of the centering fixing frame (15), and the drive ends of several centering adjustment servo cylinders (21) are fixedly connected to one side of several centering sliders (17) respectively.

2. The slotted commutator auxiliary installation structure according to claim 1, characterized in that, Servo electric cylinder 1 (6) is fixedly installed on the front and rear sides inside the frame (1), and positioning frame 1 (7) is fixedly installed on the drive end of servo electric cylinder 1 (6) on the front and rear sides; positioning frame 2 (8) is slidably installed on both sides of the two positioning frames 1 (7) via electric sliders.

3. The slotted commutator auxiliary installation structure according to claim 1, characterized in that, The fixed frame (2) has support frames (10) fixed on both sides of its front, and the two sides of the sliding frame (11) are slidably connected to one side of the two support frames (10); the two sides of the top of the sliding frame (11) are fixedly provided with lifting servo cylinders (13), the driving ends of the two lifting servo cylinders (13) are fixedly connected to the top of the movable mounting frame (12), the four sides of the top of the movable mounting frame (12) are fixedly provided with mounting slide rods (14), and the top ends of the four mounting slide rods (14) are slidably connected to the inside of the sliding frame (11).

4. The slotted commutator auxiliary installation structure according to claim 1, characterized in that, Several mounting limit blocks (24) are movably provided at the bottom inside the centering bracket (15), and several limit servo cylinders (22) are fixedly provided inside the centering bracket (15). The driving ends of the several limit servo cylinders (22) are respectively fixedly connected to one side of the mounting limit block (24); two limit slide rods (23) are fixedly provided on one side of each mounting limit block (24), and one end of the several limit slide rods (23) is slidably connected to the inside of the centering bracket (15).

5. The slotted commutator auxiliary installation structure according to claim 1, characterized in that, The movable mounting bracket (12) is fixedly equipped with mounting servo cylinders (29) around its top, and the centering bracket (15) is movably equipped with mounting blocks (28). The drive ends of the four mounting servo cylinders (29) are fixedly connected to the top of the mounting blocks (28).

6. The slotted commutator auxiliary installation structure according to claim 1, characterized in that, The positioning and feeding assembly (4) includes a feeding support frame (30) and a lifting platform (31). The feeding support frame (30) is fixedly installed on the front side inside the fixed frame (2), and the lifting platform (31) is movably installed inside the feeding support frame (30). Feeding servo cylinders (32) are fixedly installed on both sides of the bottom of the feeding support frame (30), and the driving ends of the two feeding servo cylinders (32) are fixedly connected to the bottom of the lifting platform (31). A dust suction port (33) is provided in the middle of the top of the lifting platform (31), and a dust suction interface (34) communicating with the inside of the dust suction port (33) is provided at the bottom of the lifting platform (31).

7. The slotted commutator auxiliary installation structure according to claim 6, characterized in that, The loading frame (30) is equipped with several center correction blocks (36) inside, and several correction servo cylinders (35) are also fixedly installed inside the loading frame (30). The drive ends of the several correction servo cylinders (35) are respectively fixedly connected to one side of the several center correction blocks (36).

8. The slotted commutator auxiliary installation structure according to claim 1, characterized in that, A cleaning servo cylinder (26) is fixedly provided at the middle of the top of the movable mounting bracket (12), and the drive end of the cleaning servo cylinder (26) extends into the interior of the centering mounting bracket (15). A cleaning nozzle (25) is movably provided inside the centering mounting bracket (15), and the top of the cleaning nozzle (25) is fixedly connected to the drive end of the cleaning servo cylinder (26). An air jet interface (27) is also fixedly provided at the top of the movable mounting bracket (12), and the bottom end of the air jet interface (27) is connected to several air jet ports provided at the bottom of the cleaning nozzle (25) through an elastic conduit.

9. The slotted commutator auxiliary installation structure according to claim 1, characterized in that, The installation pretreatment component (5) includes a pretreatment cover (37). The pretreatment cover (37) is movably provided on the top of the fixing frame (2), and the bottom of the pretreatment cover (37) extends into the interior of the fixing frame (2). Pretreatment servo cylinders (38) are fixedly provided on both sides of the top of the fixing frame (2), and the drive ends of the two pretreatment servo cylinders (38) are fixedly connected to both sides of the pretreatment cover (37).

10. The slotted commutator auxiliary installation structure according to claim 9, characterized in that, The pretreatment hood (37) has several air inlets (39) at the top inside, and an air inlet (40) is fixedly provided on the top of the pretreatment hood (37), and the interior of the air inlet (40) is connected to the interior of the several air inlets (39); the pretreatment hood (37) has several dust outlets (41) at the bottom inside, and a dust outlet (42) is fixedly provided on the top of one side of the pretreatment hood (37), and the interior of the dust outlet (42) is connected to the interior of the several dust outlets (41).

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