A motor rotor assembly machine and method of use thereof

Abstract

The application relates to a motor rotor assembling machine and a use method thereof, and belongs to the technical field of motor assembling. The machine is used for solving the problems that magnetic steel is prone to deflection and jamming during deep blind magnetic steel slot assembling of an ultralong rotor core, and a rotor shaft body is prone to drooping and flexing. The assembling machine comprises a rack, a fixed workbench, a clamping tool, two alternately used linear pushing modules, a displacement adjusting module, a horizontal supporting assembly and an axial pushing assembly. The horizontal supporting assembly realizes self-adaptive support and gravity compensation of the rotor shaft body through V-shaped supporting blocks and an elastic displacement structure. The axial pushing assembly cooperates with a guide module, uses a guide insert piece to guide the magnetic steel in the whole process, and synchronously retreats outward when the magnetic steel is fed, so that dynamic guidance and pushing are realized in the whole process. The application effectively avoids magnetic steel assembling damage and shaft body assembling interference, and improves the yield and production efficiency of ultralong rotor assembling.

Description

Technical Field

[0001] This invention belongs to the field of motor assembly technology, and relates to a motor rotor assembly machine and its usage method. Background Technology

[0002] Servo spindle motors and ultra-long rotor motors typically have deep blind magnet slots with a large length-to-diameter ratio in their rotor cores. These cores have large slot depths and small gaps, requiring the magnets to be pushed into the slots segment by segment for assembly. This is a core and critical process in the motor rotor production process. Currently, the industry mostly relies on manual assistance with tooling or traditional fixed guide tooling for magnet assembly of such ultra-long deep slot cores. The overall assembly process and supporting equipment have many substantial defects, making it difficult to meet the requirements of high precision, high yield, and automated continuous production.

[0003] Existing traditional assembly fixtures have simple structures, providing only basic guidance and constraints on the outside of the iron core slot. The guiding structure cannot penetrate deep into the ultra-long, deep blind slot. When the magnet is pushed into the front section of the slot, it can maintain its posture stability with the help of external fixtures. However, when the magnet travels to the middle or rear section of the slot, it will completely break away from the guidance and constraints of the external fixtures. Since the magnet is a brittle sintered material with no toughness, it is very easy to deflect to the left or right and tilt its posture during the pushing process inside the ultra-long slot. This can lead to problems such as jamming, chipping, cracking, or even complete breakage in the slot, resulting in a low magnet assembly yield and increasing the production cost of the motor and the scrap rate of the workpiece.

[0004] Meanwhile, the ultra-long rotor shaft has a large self-weight, and traditional assembly equipment does not have a targeted adaptive support structure. The horizontally suspended end of the rotor shaft is prone to sagging and bending deformation due to its own weight, which causes the coaxiality deviation between the rotor and the iron core assembly. This can easily lead to assembly interference and forced squeezing assembly, which not only affects the rotor assembly accuracy, but also causes wear on the iron core and rotor structure, affecting the final operating accuracy and service life of the motor. Summary of the Invention

[0005] This invention addresses the problems encountered in assembling ultra-long servo motor rotors with deep blind magnet slots, including poor coaxiality due to the weight of the long shaft, lack of guidance and jamming at the rear section of the magnet, strong magnetic interference causing magnet jumps, and low tooling change efficiency. During the development process, it was discovered that existing technologies only provide fixed guides at the slot opening, leaving the magnet unconstrained and prone to deflection in the rear section. Furthermore, there is no adaptive support for the long shaft, and no magnetic isolation and anti-jump structure, which fails to meet the high-precision assembly requirements of ultra-long deep blind slot rotors. Additionally, there is a widespread technical bias in the field that "guide components cannot be inserted into the slot to achieve long-distance guidance."

[0006] This invention organically integrates a dual-station lateral switching mechanism, a bidirectional adaptive elastic support mechanism, a synchronous retreat-type full-process dynamic guiding mechanism, and a magnetic isolation and anti-jump mechanism, enabling the two processes of shaft threading and magnet installation to be completed without clamp changes, the shaft to be supported throughout the entire process without sagging, the magnet to be guided from the slot opening to the slot bottom without deflection, and the strong magnet to be free from interference and magnetic jump, thus providing a motor rotor assembly machine and its usage method.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a motor rotor assembly machine, comprising: A frame, wherein a fixed workbench is fixedly provided at the top of one end of the frame, and a clamping fixture for horizontally fixing the iron core is provided at the top of the fixed workbench. Two linear push modules are slidably mounted on the top of the frame. The two linear push modules can be used alternately with the fixed worktable. A displacement adjustment module is fixedly provided on the top of the frame. The displacement adjustment module is used to drive the two linear push modules to change positions. A horizontal support assembly is disposed on one of the linear push modules. The horizontal support assembly includes a push base I, a relief base I is elastically connected to one side of the push base I, and a V-shaped support block I for supporting the shaft is fixedly provided on the top of the relief base I and one side of the push base I. An axial pushing assembly is provided on another linear pushing module. The axial pushing assembly includes a pushing base II, a pushing rod fixedly provided on one side of the pushing base II, a relief base II elastically connected to one side of the pushing base II, a guide frame II for guiding the iron core magnet fixedly provided in the relief base II, and a pushing slider slidably provided in the guide frame II. Multiple pushing sliders are connected to the pushing rod.

[0008] As a further improvement to the above technical solution: The clamping fixture includes: Adjustable table I is adjustablely mounted on top of the fixed worktable; Two fixed bases are fixedly installed on the top of the adjustment platform I, and a positioning plate for positioning the iron core is fixedly installed on the top of the two fixed bases; A bidirectional transmission lead screw is rotatably mounted on the top of the adjustment platform I, and lead screw nut seats are slidably sleeved at the threaded ends of both ends of the bidirectional transmission lead screw; Two sliding seats are slidably disposed on the top of the adjusting platform I. The two sliding seats are respectively fixedly connected to two lead screw nut seats. Each sliding seat is fixedly provided with a clamping ring on its top, and the clamping ring is fixedly connected to the sliding seat. And drive motor I, which is fixedly installed on one side of adjustment platform I. The output end of drive motor I is fixedly connected to bidirectional transmission screw. Drive motor I is used to drive two clamping rings to move closer to each other so as to fix the iron core in the positioning plate.

[0009] The linear push module includes: A fixed connecting bracket is slidably mounted on the top of the frame, and two fixed connecting brackets are fixedly connected. A one-way drive screw is rotatably mounted within a fixed connecting frame; Drive motor II is fixedly mounted on the outer end of the fixed connecting frame, and the output end of drive motor II is fixedly connected to a one-way transmission screw. The ball nuts are spirally sleeved on the outer wall of the one-way transmission screw. The ball nuts of the two linear push modules are fixedly connected to the push base I and the push base II respectively. The push base I and the push base II are slidably mounted on the corresponding fixed connecting frame.

[0010] Two guide rods are fixedly provided on the top of the relief base I. The V-shaped support block I is sleeved on the two guide rods. The top end of the guide rod is threaded with a locking nut that abuts against the V-shaped support block I. A disc spring is sleeved on the outer wall of the guide rod. The two ends of the disc spring abut against the top of the relief base I and the bottom of the V-shaped support block I, respectively.

[0011] A sliding guide rod I is fixedly provided on one side of the yielding base I. The other end of the sliding guide rod I passes through and slides inside the push base I. The outer end of the sliding guide rod I is provided with a limiting ring that abuts against the push base I. A return spring I is sleeved on the outer wall of the sliding guide rod I. The two ends of the return spring I abut against the sides of the yielding base I and the push base I that are close to each other.

[0012] A sliding guide rod II is fixedly provided on one side of the yielding base II. The other end of the sliding guide rod II passes through and slides inside the pushing base II. A limiting ring is provided at the outer end of the sliding guide rod II, which abuts against the pushing base II. A return spring II is sleeved on the outer wall of the sliding guide rod II. The two ends of the return spring II abut against the sides of the yielding base II and the pushing base II that are close to each other.

[0013] The outer wall of the push rod is fitted with a drive disk, and the push slider is fixedly disposed on the outer wall of the drive disk.

[0014] It also includes a guide module, which is adjustablely mounted on the fixed worktable and located at the outer end of the fixed worktable. The guide module includes: Adjustment table II is adjustablely mounted on a fixed workbench; Guide frame I is fixedly installed inside adjustment platform II and corresponds to guide frame II; Guide inserts are slidably mounted on the inner walls of both sides of guide frame I; And push rods, each set of guide plates is fixedly connected to the corresponding push rod through a fixed connecting seat, and the push rod is used in conjunction with the push rod.

[0015] When the guide frame II abuts against one end of the iron core, one end of the push rod abuts against the push rod extending into the iron core. When the guide frame II pushes the magnet, the push rod synchronously drives the guide insert to retract and move outward of the iron core under the pushing action of the push rod.

[0016] A method of using a motor rotor assembly machine, comprising the following steps: S1. Place the iron core on the clamping fixture and fix the iron core horizontally using the clamping fixture; S2. Start the displacement adjustment module to drive the two linear push modules to switch positions and switch the linear push module with horizontal support components to the working position that cooperates with the fixed worktable. S3. Place the rotor shaft on the V-shaped support block I, start the corresponding linear push module, drive the horizontal support assembly to move towards the iron core, and let the positioning base I drive the rotor shaft to pass into the iron core. When the positioning base I abuts against the clamping fixture, the pushing base I continues to push the rotor shaft into the iron core until the rotor is assembled in place. S4. Reset the horizontal support assembly, restart the displacement adjustment module, drive the two linear push modules to switch positions, and switch the linear push module with the axial push assembly to the working position that cooperates with the fixed worktable. S5. Place the magnet in the guide frame II and adjust the guide insert to be inserted into the corresponding magnet slot. Start the corresponding linear push module and drive the axial push assembly to move towards the iron core. Let the base II drive the guide frame II to abut against the end of the iron core. The push base II continues to push the push rod. The push rod pushes the magnet into the magnet slot of the iron core through the push slider. S6. During the process of pushing in the magnets, the push rod abuts against the push rod and simultaneously drives the guide plate to move outward from the iron core until all magnets are assembled. S7. Reset the axial push assembly and horizontal support assembly in sequence, loosen the clamping fixture, and take out the assembled rotor workpiece.

[0017] The beneficial effects of this invention are as follows: 1. The motor rotor assembly machine disclosed in this invention has a horizontal support component that can achieve adaptive support and gravity compensation for ultra-long rotor shafts. The V-shaped support block enables automatic centering of the rotor shaft, offsetting the sagging and bending deformation caused by the weight of the ultra-long shaft, ensuring that the rotor shaft is fed horizontally throughout the assembly process. Relying on the elastic yielding structure composed of the yielding base I, sliding guide rod I, return spring I, and disc spring, it can achieve adaptive avoidance when the rotor feed encounters tooling limit interference. The base continues to feed, and the front support structure limits and yields, solving the assembly interference problem caused by the ultra-long rotor step structure and tooling limit structure, realizing rotor-free and high-precision assembly operation, avoiding shaft scratches and deformation caused by rigid pushing, and ensuring the coaxiality accuracy of rotor assembly. 2. The motor rotor assembly machine disclosed in this invention uses an axial pushing component in conjunction with a guide module to form a dynamic guiding and pushing structure that runs through the entire iron core. Guide frame I and guide frame II are coaxially corresponding. The guide insert can penetrate deep into the interior of the ultra-long and deep blind slot. Together with the pushing slider, it realizes the smooth pushing of the magnet. At the same time, the linkage structure of the pushing rod, drive disk and pushing slider can realize the uniform distribution of the pushing force, ensuring that the magnet is pushed with uniform force and smooth sliding. During the magnet feeding process, the guide insert retracts outward synchronously with the magnet feeding, realizing the magnet is fully aligned with the guide and there is no suspended blind area. This solves the problems of the magnet in the middle and rear section of the ultra-long and deep blind slot having no guiding constraint, easy deflection, jamming and breakage, and improves the magnet assembly yield. 3. The motor rotor assembly machine disclosed in this invention has a displacement adjustment module set on the top of the frame to achieve rapid switching between two workstations. The displacement adjustment module adopts a standard precision transmission structure of motor, ball screw and ball nut, which is smooth and accurate in positioning. It can drive two sets of linear push modules to alternately switch workstations to complete the two processes of rotor shaft support installation and iron core magnet push assembly, respectively. There is no need to manually change tooling and workpieces, reduce manual intervention steps, improve the automation level and continuous operation capability of the equipment, and effectively improve the overall assembly production efficiency of rotor. 4. The motor rotor assembly machine disclosed in this invention uses a clamping fixture with a finely adjustable adjustment table I, a positioning plate, and a clamping ring structure driven by a bidirectional transmission screw to clamp iron cores of different lengths while avoiding damage to the outer wall of the iron core during clamping.

[0018] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein: Figure 1 This is a three-dimensional structural schematic diagram of a motor rotor assembly machine according to the present invention; Figure 2 This is a three-dimensional structural schematic diagram of another working mode of the motor rotor assembly machine of the present invention; Figure 3 This is a schematic diagram of the horizontal support assembly and linear push module structure of a motor rotor assembly machine according to the present invention; Figure 4 This is a schematic diagram of the axial pushing assembly and linear pushing module structure of a motor rotor assembly machine according to the present invention; Figure 5 This is a schematic diagram of the clamping fixture, guide module and fixed worktable structure of a motor rotor assembly machine according to the present invention; Figure 6 This is a schematic diagram of the guide module structure of a motor rotor assembly machine according to the present invention; Figure 7 This is a partial structural diagram of the axial pushing assembly of a motor rotor assembly machine according to the present invention.

[0020] Reference numerals: 1. Frame; 2. Fixed worktable; 3. Clamping fixture; 31. Adjusting table I; 32. Fixed base; 33. Positioning plate; 34. Sliding seat; 35. Clamping ring; 36. Bidirectional transmission screw; 37. Screw nut seat; 38. Drive motor I; 4. Guide module; 41. Adjusting table II; 42. Guide frame I; 43. Guide insert; 44. Fixed connecting seat; 45. Push rod; 5. Displacement adjustment module; 6. Linear push module; 61. Fixed connecting frame; 62. Drive motor I; 63. Motor II; 7. One-way transmission screw; 8. Horizontal support assembly; 9. Pushing base I; 10. Yielding base I; 11. Guide rod; 12. Locking nut; 13. Disc spring; 14. V-shaped support block I; 15. Sliding guide rod I; 16. Return spring I; 17. Axial pushing assembly; 18. Pushing base II; 19. Pushing rod; 20. Drive disc; 21. Yielding base II; 22. Guide frame II; 33. Pushing slider; 44. Sliding guide rod II; 55. Return spring II. Detailed Implementation

[0021] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0022] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0023] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] Example 1

[0025] like Figures 1-5 and Figure 7 As shown, a motor rotor assembly machine includes a frame 1, which forms the overall load-bearing base of the equipment. All functional components of the equipment are fixed and assembled based on the frame 1, which can stably bear the working load of ultra-long rotors, heavy iron core workpieces, and various motion modules. The bottom of the frame 1 is equipped with corresponding fixing structures (such as adjustable legs) to achieve horizontal fixed installation of the entire equipment, avoiding overall shaking and displacement of the equipment during operation, and ensuring the coaxiality and stability of the rotor and iron core assembly process. A fixed worktable 2 is fixedly mounted on the top of one end of the frame 1. The fixed worktable 2 provides a flat and stable reference working surface for iron core clamping and positioning, and rotor and magnet assembly operations. A clamping fixture 3 is mounted on the top of the fixed worktable 2. The clamping fixture 3 is used to achieve horizontal clamping and positioning of the motor iron core, which can effectively limit the horizontal displacement and circumferential rotation of the iron core during the assembly process, so that the iron core always maintains a fixed posture, providing a stable workpiece foundation for subsequent rotor shaft insertion and magnet pushing assembly.

[0026] The clamping fixture 3 includes an adjusting table I 31, which is slidably connected to the top of the fixed workbench 2 via a guide rail slider. After adjustment, it can be locked in place with locking screws to prevent positional movement during operation. The adjusting table I 31 can adaptively fine-tune its installation position according to the size differences of different specifications of iron cores to adapt to the clamping reference requirements of different models of iron cores. Two sets of symmetrically arranged fixed bases 32 are fixedly installed on the top of the adjusting table I 31. Each set of fixed bases 32 is fixedly equipped with a positioning plate 33, which is arc-shaped and fits the bottom surface of the iron core. The positioning plate 33 cooperates with the bottom of the iron core to achieve the initial positioning of the iron core and limit the horizontal displacement of the iron core. A bidirectional transmission screw 36 is rotatably mounted on the top of the adjusting table I 31. The two ends of the bidirectional transmission screw 36 are provided with opposite thread structures. The two ends of the bidirectional transmission screw 36 are respectively slidably fitted with screw nut seats 37. The two sets of screw nut seats 37 can follow the rotation of the bidirectional transmission screw 36 to achieve synchronous movement in opposite directions or movement in opposite directions. Two sets of sliding seats 34 are slidably mounted on the top of the adjusting platform I 31 via guide rail sliders. The two sets of sliding seats 34 are fixed to the outer positions of the two sets of lead screw nut seats 37. Each set of sliding seats 34 has a clamping ring 35 fixedly installed on its top. The clamping ring 35 adopts an arc-shaped structure adapted to the end face of the iron core, which can fit the end face of the iron core to achieve horizontal clamping and fixation. A drive motor I 38 is fixedly mounted on one side of the adjusting platform I 31. The output end of the drive motor I 38 is fixedly connected to the end of the bidirectional transmission lead screw 36. During operation, the drive motor I 38 outputs power to drive the bidirectional transmission lead screw 36 to rotate, which drives the lead screw nut seats 37 and sliding seats 34 at both ends to move synchronously towards each other, so that the two sets of clamping rings 35 move closer to each other. Together with the top positioning plate 33, the iron core is stably clamped and fixed, ensuring that the iron core is clamped with uniform force and avoiding clamping deformation and positioning deviation.

[0027] Two identical linear push modules 6 are slidably mounted on the top of the frame 1 via guide rails. These two modules are fixedly connected to each other, enabling synchronized sliding adjustment. They can alternately work with the fixed worktable 2 to complete the two core assembly processes: rotor shaft support installation and core magnet pushing. This eliminates the need for manual tooling and workpiece replacement, effectively improving the continuity and overall efficiency of the assembly process. A displacement adjustment module 5 is also fixedly mounted on the top of the frame 1. This module employs a transmission structure consisting of a drive motor, ball screw, and ball nut. The drive motor is fixed to one side of the frame 1, and the ball screw is rotatably mounted on the frame 1. A ball nut engages with the outer wall of the ball screw, connecting to the fixed structure of the two linear push modules 6. The displacement adjustment module 5 drives the ball screw to rotate via the motor, causing the ball nut to slide linearly, thereby driving the two linear push modules 6 to switch their working positions. This allows for rapid switching between the two assembly processes, meeting the requirements of continuous assembly operations.

[0028] The linear push module 6 includes a fixed connecting frame 61, which is the main supporting frame of the module. A one-way transmission screw 63 is rotatably assembled inside the fixed connecting frame 61. A drive motor II 62 is fixedly installed on the outer end of the fixed connecting frame 61. The output end of the drive motor II 62 is fixedly connected to the end of the one-way transmission screw 63, providing power input for the rotational movement of the one-way transmission screw 63. A ball nut is slidably fitted on the outer wall of the one-way transmission screw 63. The ball nut precisely meshes with the thread structure of the one-way transmission screw 63. The ball nuts inside the two sets of linear push modules 6 are fixedly connected to the corresponding push base I 71 and push base II 81, respectively. The push base I 71 and push base II 81 are slidably mounted on the guide rail structure of the corresponding fixed connecting frame 61 through the guide rail slider. When the drive motor II 62 drives the one-way transmission screw 63 to rotate, it can drive the corresponding base to make precise axial sliding along the fixed connecting frame 61 through the ball nut, so as to realize the stable displacement control of rotor support feed and magnet push feed. After long-term use in an environment containing magnetic dust, the one-way transmission screw 63 and the guide rail slider need to be cleaned and lubricated regularly to ensure transmission accuracy.

[0029] One set of linear push modules 6 has a horizontal support assembly 7 fixedly mounted on its sliding end. The horizontal support assembly 7 is mainly used for horizontal support and gravity compensation during the assembly of ultra-long length-to-diameter ratio rotor shafts, to counteract the deflection and sag caused by the rotor's own weight, and to ensure that the rotor shaft is fed horizontally during installation. The horizontal support assembly 7 includes a push base I 71 that slides on the top of the fixed connecting frame 61. The push base I 71 is the main base structure of the horizontal support assembly 7. A clearance base I 72 is elastically connected to one side of the push base I 71. The clearance base I 72 also slides on the top of the fixed connecting frame 61. The clearance base I 72 can elastically extend and retract relative to the push base I 71 to adapt to the workpiece avoidance requirements during the assembly process and eliminate structural interference.

[0030] Two symmetrically arranged guide rods 73 are fixedly installed on the top of the base I 72. The two guide rods 73 are arranged vertically. A V-shaped support block I 76 is sleeved on the outside of the two guide rods 73 and can be adjusted slightly vertically along the guide rods 73 to adapt to the support height requirements of the rotor shaft deflection. A locking nut 74 is threaded on the top of the guide rod 73. The bottom surface of the locking nut 74 abuts against the upper surface of the V-shaped support block I 76, and the V-shaped support block I 76 is locked by the locking nut 74. A disc spring 75 is fitted onto the outer wall of the guide rod 73. The upper and lower ends of the disc spring 75 abut against the bottom of the V-shaped support block I 76 and the top of the relief base I 72, respectively. The disc spring 75 continuously provides vertical elastic preload, ensuring that the V-shaped support block I 76 fits tightly against the rotor shaft and allows for slight elastic retraction during shaft feed fine-tuning, avoiding shaft deformation and surface scratches caused by rigid clamping. The top of the relief base I 72 cooperates with the V-shaped support block I 76 mounted on the side of the push base I 71 to form a multi-point support structure for the rotor shaft. This structure can automatically adapt to rotor shafts of different diameters, achieving automatic centering of the shaft and ensuring support stability.

[0031] A horizontally arranged sliding guide rod I77 is fixedly installed on the outer wall of the yielding base I72. The other end of the sliding guide rod I77 is slidably assembled inside the jacking base I71. A limit ring structure is provided at the outer end of the sliding guide rod I77. The outer diameter of the limit ring is larger than the through hole diameter of the jacking base I71, which can limit the maximum sliding stroke of the sliding guide rod I77, prevent the yielding base I72 from completely separating from the jacking base I71, and ensure the safety of the structure operation. A return spring I78 is sleeved on the outer wall of the sliding guide rod I77. The two ends of the return spring I78 abut against the inner end faces of the yield base I72 and the push base I71, which are close to each other. Under normal conditions, the return spring I78 is kept in a slightly compressed state, maintaining the relative fixed position of the yield base I72 and the push base I71. When the yield base I72 abuts against the adjustment table I31, the push base I71 continues to push, compressing the return spring I78 to achieve the yield displacement. After the yield pressure is released, the elastic return force of the return spring I78 can drive the yield base I72 to automatically reset and restore the initial working position, which can be adapted to repeated cyclic assembly operations. During the continuous insertion of the rotor shaft into the iron core, when the relief base I72 comes into contact with the outer end face of the clamping fixture 3 as the workpiece is fed, the relief base I72 stops feeding and limits the movement. The push base I71 can continue to drive the rotor shaft forward. The position interference is offset by the elastic relief structure, and the rotor shaft insertion operation is continuously completed, effectively avoiding the assembly interference problems caused by the rotor step structure and the fixture limiting structure.

[0032] Another set of linear push modules 6 has an axial push assembly 8 fixedly mounted on its sliding end. The axial push assembly 8 includes a push base II 81, which is the fixed base of the axial push assembly 8 and is slidably mounted on the sliding end of the corresponding linear push module 6. A push rod 82 is fixedly installed on one side of the push base II 81. The push rod 82 is used to output axial push power to ensure the straightness of the magnet feed. A relief base II 84 is elastically connected to the same side of the push base II 81. The relief base II 84 can elastically recoil relative to the push base II 81 to adapt to the need for collision avoidance at the end of the iron core and avoid damage to the workpiece and structure caused by rigid push.

[0033] A horizontally arranged sliding guide rod II87 is fixedly installed on the outer wall of the yielding base II84. The other end of the sliding guide rod II87 is slidably fitted inside the pushing base II81. A limit ring structure is provided at the outer end of the sliding guide rod II87 to limit the maximum yielding stroke of the yielding base II84 and prevent the structure from slipping and failing. A return spring II88 is sleeved on the outer wall of the sliding guide rod II87. The two ends of the return spring II88 abut against the inner end faces of the yielding base II84 and the pushing base II81, which are close to each other. After the yielding is completed, the return spring II88 can drive the yielding base II84 to automatically return to its original position, ensuring that the structure can operate continuously in cycles. The top of the yielding base II84 is annular, and a guide frame II85 is fixedly installed on its inner wall. The guide frame II85 can accommodate magnets, and its number corresponds to the magnet slots on the iron core. The guide frame II 85 has multiple evenly distributed push sliders 86 sliding inside. All push sliders 86 are fixedly connected to the push rod 82. The axial movement of the push rod 82 can synchronously drive all push sliders 86 to slide and feed synchronously. The outer wall of the push rod 82 is fixedly fitted with a drive disk 83. The outer surface of the drive disk 83 is fixedly connected to the end of all push sliders 86, which can evenly distribute the axial thrust of the push rod 82 to each push slider 86, ensuring that multiple sets of push sliders 86 are subjected to uniform force and slide synchronously, avoiding magnet offset and jamming caused by single-point force. During operation, the guide frame II 85 first abuts against the limit switch to complete the positioning at the end of the iron core. The push base II 81 continuously drives the push rod 82 to move forward, and pushes the magnet placed inside the guide frame II 85 into the iron core magnet slot section by section through the push sliders 86. The magnet posture is constrained throughout the process to ensure smooth assembly without breakage or jamming.

[0034] It also includes a controller, preferably a PLC programmable controller, which is electrically connected to drive motor I 38, drive motor II 62, and the drive motor of displacement adjustment module 5. The controller is used to control the displacement adjustment module 5 to drive the two linear push modules 6 to switch workstations, control drive motor I 38 to drive the two clamping rings 35 to clamp or release the iron core, and control drive motor II 62 to drive the horizontal support assembly 7 or the axial push assembly 8 to push or reset.

[0035] Example 2

[0036] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 This invention provides a novel technical solution: a motor rotor assembly machine. A guide module 4 is adjustablely mounted on the outer end of a fixed worktable 2. The guide module 4 is positioned corresponding to the entrance position of the iron core blind slot and can cooperate with the axial pushing assembly 8 to complete the dynamic guiding assembly of ultra-long magnets throughout the entire process. The guide module 4 includes an adjustment platform II 41, which is slidably connected to the fixed worktable 2 via a guide rail slider. This allows for fine-tuning of the horizontal position. After adjustment, it is locked in place with locking screws, enabling precise matching of the blind slot positions for iron cores of different specifications, adapting to the assembly needs of multiple workpiece specifications. A guide frame I 42 is fixedly installed inside the adjustment platform II 41. The guide frame I 42 and guide frame II 85 are coaxially aligned, forming a complete, through-flow guiding channel. Guide inserts 43 are slidably mounted on the inner walls of both sides of the guide frame I 42 via guide rail sliders. These guide inserts 43 can penetrate deep into the iron core blind slot, providing dynamic, close-fitting guiding support during magnet pushing, compensating for the lack of guidance in the later stages of the ultra-long slot. Each set of guide inserts 43 is fixedly connected to a fixed connecting seat 44 on its outer side. A push rod 45 is mounted on the outer side of the fixed connecting seat 44. The push rod 45 and the end of the push rod 82 are correspondingly matched and can move in linkage with the push rod 82 as it moves forward.

[0037] During equipment operation, when the front end of guide frame II 85 abuts against the end of the iron core, the end of push rod 82 abuts against the end of push rod 45, which is deep inside the iron core, forming a linkage structure. As guide frame II 85 continuously pushes the magnet towards the bottom of the iron core slot, push rod 82 simultaneously pushes push rod 45 outward. Push rod 45 drives guide plate 43 to move outward synchronously through fixed connecting seat 44, realizing synchronous linkage between magnet feeding and guide plate 43 retraction. This ensures that the first magnet is always in close contact with guide plate 43 throughout the entire pushing process, with no suspended or missing guide areas inside the slot. This solves the problems of deflection, breakage, and jamming in the later stages of assembly of ultra-long and deep blind slot magnets, effectively improving assembly accuracy and yield.

[0038] The specific usage method of this equipment is as follows: In the initial state of the equipment, the two sets of linear push modules 6 are in the initial standby position, the horizontal support component 7, the axial push component 8, and the guide module 4 are all in the reset state, and all elastic relief structures and sliding structures maintain the initial fitting position. There is no interference or offset between the moving parts of the equipment.

[0039] First, place the motor core to be assembled on the positioning plate 33 at the top of the fixed workbench 2. Adjust the position of the adjusting platform I 31 according to the core specifications. After adjustment, fix the position of the adjusting platform I 31 with the locking screws to ensure accurate alignment of the core clamping reference. Start the drive motor I 38 to drive the bidirectional transmission screw 36 to rotate, which will drive the two sets of screw nut seats 37 and sliding seats 34 to move towards each other, so that the two sets of clamping rings 35 come together and stably clamp and fix the core above the positioning plate 33, completing the positioning and clamping of the core and ensuring that the core posture is fixed and there is no offset rotation.

[0040] After the iron core is clamped, the position of the sliding fine-tuning adjustment table II 41 is adjusted according to the specifications of the rotor and iron core to be assembled. After adjustment, it is locked and fixed with locking screws to ensure that the guide frame I 42 is coaxially aligned with the iron core blind slot and the guide frame II 85, while ensuring that the guide insert 43 can just pass through the magnet slot, thus completing the alignment and calibration of the front guide structure. Then, the drive motor of the displacement adjustment module 5 is started. The motor drives the ball screw to rotate, and drives the two sets of linear push modules 6 to slide as a whole through the ball nut transmission, switching the linear push module 6 equipped with the horizontal support component 7 to the working position.

[0041] The extra-long rotor shaft is placed on two V-shaped support blocks I76. The V-shaped positioning makes the V-shaped support blocks I76 fit against the suspended end of the extra-long rotor shaft. The V-shaped support structure completes the centering support of the rotor shaft, counteracts the sag and deflection caused by the rotor's own weight, and ensures that the rotor shaft is in a horizontal state.

[0042] The horizontal support assembly 7 is continuously moved forward, causing the rotor shaft to slowly penetrate into the iron core. During the rotor feeding process, the clearance base I 72 gradually approaches the clamping fixture 3 with the feed stroke. When the clearance base I 72 touches the end face of the clamping fixture 3, it stops moving. The push base I 71 continues to move forward, relying on the elastic yielding characteristics of the return spring I 78 and the disc spring 75 to avoid structural interference and continuously complete the insertion of the rotor shaft until the middle section of the rotor step structure and the iron core complete the initial matching and positioning. The rotor support assembly process is completed and reset.

[0043] Restart the drive motor of displacement adjustment module 5, and switch the working positions of the two linear push modules 6 through ball screw and ball nut transmission. Switch the linear push module 6 equipped with axial push assembly 8 to the working position, so that guide frame II 85 is aligned with the blind slot port of the iron core. Place the segmented magnets to be assembled into the guide frame II 85 in sequence, start the corresponding drive motor II 62, drive the push base II 81 forward, so that the front end of guide frame II 85 abuts against the end of the iron core to achieve positioning and limit, and at the same time push push rod 45 to move into the iron core, so that guide insert 43 is inserted into the corresponding magnet slot. As the jacking base II 81 moves forward continuously, it drives the jacking rod 82 and the drive disk 83 to feed. The pusher slider 86 pushes the magnet to slide along the inside of the guide frame II 85, so that the first magnet is located in each set of guide inserts 43. When half of the first magnet is inserted into each set of guide inserts 43, the jacking rod 82 abuts against the push rod 45. With continuous pushing, the pusher push rod 45 drives the guide inserts 43 to retract outward. Each feeding stroke of the magnet matches the retraction stroke of the guide inserts 43, keeping the magnet in full contact with the guide without any suspension or deviation.

[0044] All magnets are pushed into the blind slots of the iron core segment by segment to complete the assembly of all magnets. After all assembly is completed, the axial pushing assembly 8 and the horizontal support assembly 7 are reset in sequence. The two linear pushing modules 6 are reset through the displacement adjustment module 5. The drive motor I 38 is started in reverse to release the clamping ring 35. The assembled rotor iron core workpiece is removed, and the equipment returns to the initial standby state, ready to enter the next round of workpiece assembly cycle.

[0045] However, as is well known to those skilled in the art, the working principles and wiring methods of drive motor I38 and drive motor II62 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A motor rotor assembly machine, characterized in that, include: A frame (1) is provided with a fixed workbench (2) at one end of the frame (1), and a clamping fixture (3) for horizontally fixing the iron core is provided at the top of the fixed workbench (2). Two linear push modules (6) are slidably mounted on the top of the frame (1). The two linear push modules (6) can be used alternately with the fixed worktable (2). A displacement adjustment module (5) is fixedly mounted on the top of the frame (1). The displacement adjustment module (5) is used to drive the two linear push modules (6) to change positions. A horizontal support assembly (7) is disposed on one of the linear push modules (6). The horizontal support assembly (7) includes a push base I (71). A relief base I (72) is elastically connected to one side of the push base I (71). A V-shaped support block I (76) for supporting the shaft is fixedly provided on the top of the relief base I (72) and one side of the push base I (71). And an axial push assembly (8) is set on another linear push module (6). The axial push assembly (8) includes a push base II (81). A push rod (82) is fixedly provided on one side of the push base II (81). A clearance base II (84) is elastically connected to one side of the push base II (81). A guide frame II (85) for guiding the iron core magnet is fixedly provided in the clearance base II (84). A push slider (86) is slidably provided in the guide frame II (85). Multiple push sliders (86) are connected to the push rod (82).

2. The motor rotor assembly machine according to claim 1, characterized in that, The clamping fixture (3) includes: Adjustable table I (31) is adjustablely mounted on top of fixed workbench (2); Two fixed bases (32) are fixedly installed on the top of the adjustment platform I (31), and the top of the two fixed bases (32) is fixedly provided with positioning plates (33) for positioning the iron core. A bidirectional transmission screw (36) is rotatably mounted on the top of the adjustment table I (31), and screw nut seats (37) are slidably sleeved at the threaded ends of both ends of the bidirectional transmission screw (36). Two sliding seats (34) are slidably disposed on the top of the adjusting table I (31). The two sliding seats (34) are respectively fixedly connected to two lead screw nut seats (37). Each sliding seat (34) is fixedly provided with a clamping ring (35) on its top. The clamping ring (35) is fixedly connected to the sliding seat (34). And drive motor I (38), which is fixedly set on one side of adjustment table I (31). The output end of drive motor I (38) is fixedly connected to bidirectional transmission screw (36). Drive motor I (38) is used to drive two clamping rings (35) to move closer to each other so as to fix the iron core in the positioning plate (33).

3. The motor rotor assembly machine according to claim 1, characterized in that, The linear push module (6) includes: A fixed connecting bracket (61) is slidably disposed on the top of the frame (1), and two fixed connecting brackets (61) are fixedly connected; A one-way drive screw (63) is rotatably mounted in a fixed connecting frame (61); Drive motor II (62) is fixedly installed at the outer end of the fixed connecting frame (61), and the output end of drive motor II (62) is fixedly connected to the one-way transmission screw (63); The ball nuts are spirally sleeved on the outer wall of the one-way transmission screw (63). The ball nuts of the two linear push modules (6) are fixedly connected to the push base I (71) and the push base II (81) respectively. The push base I (71) and the push base II (81) are slidably mounted on the corresponding fixed connecting frame (61).

4. The motor rotor assembly machine according to claim 1, characterized in that, Two guide rods (73) are fixedly provided on the top of the relief base I (72). The V-shaped support block I (76) is sleeved on the two guide rods (73). The top end of the guide rod (73) is threaded with a locking nut (74) that abuts against the V-shaped support block I (76). The outer wall of the guide rod (73) is sleeved with a disc spring (75). The two ends of the disc spring (75) abut against the top of the relief base I (72) and the bottom of the V-shaped support block I (76) respectively.

5. The motor rotor assembly machine according to claim 4, characterized in that, A sliding guide rod I (77) is fixedly provided on one side of the yielding base I (72). The other end of the sliding guide rod I (77) passes through and slides inside the push base I (71). The outer end of the sliding guide rod I (77) is provided with a limiting ring that abuts against the push base I (71). A return spring I (78) is sleeved on the outer wall of the sliding guide rod I (77). The two ends of the return spring I (78) abut against the sides of the yielding base I (72) and the push base I (71) that are close to each other.

6. The motor rotor assembly machine according to claim 1, characterized in that, A sliding guide rod II (87) is fixedly provided on one side of the yielding base II (84). The other end of the sliding guide rod II (87) passes through and slides inside the push base II (81). The outer end of the sliding guide rod II (87) is provided with a limiting ring that abuts against the push base II (81). A return spring II (88) is sleeved on the outer wall of the sliding guide rod II (87). The two ends of the return spring II (88) abut against the sides of the yielding base II (84) and the push base II (81) that are close to each other.

7. The motor rotor assembly machine according to claim 6, characterized in that, The outer wall of the push rod (82) is fitted with a drive disk (83), and the push slider (86) is fixedly disposed on the outer wall of the drive disk (83).

8. The motor rotor assembly machine according to claim 7, characterized in that, It also includes a guide module (4), which is adjustablely mounted on the fixed worktable (2) and located at the outer end of the fixed worktable (2). The guide module (4) includes: Adjustment table II (41) is adjustablely mounted on the fixed workbench (2); Guide frame I (42) is fixedly installed inside adjustment table II (41) and corresponds to guide frame II (85); Guide inserts (43) are slidably disposed on the inner walls of both sides of guide frame I (42); And push rod (45), each set of guide inserts (43) is fixedly connected to the corresponding push rod (45) through a fixed connecting seat (44), and the push rod (45) is used in conjunction with the push rod (82).

9. The motor rotor assembly machine according to claim 8, characterized in that, When the guide frame II (85) abuts against one end of the iron core, one end of the push rod (82) abuts against the push rod (45) that extends into the iron core. When the guide frame II (85) pushes the magnet, the push rod (45) drives the guide insert (43) to move outward of the iron core under the pushing action of the push rod (82).

10. A method of using a motor rotor assembly machine, comprising the motor rotor assembly machine as described in any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Place the iron core on the clamping fixture (3) and fix the iron core horizontally by the clamping fixture (3); S2. Start the displacement adjustment module (5) and drive the two linear push modules (6) to switch positions, and switch the linear push module (6) with the horizontal support component (7) to the working position that cooperates with the fixed worktable (2); S3. Place the rotor shaft on the V-shaped support block I (76), start the corresponding linear push module (6), drive the horizontal support assembly (7) to move towards the iron core, and let the pedestal I (72) drive the rotor shaft into the iron core. When the pedestal I (72) abuts against the clamping fixture (3), the push base I (71) continues to push the rotor shaft into the iron core until the rotor is assembled in place. S4. Reset the horizontal support assembly (7), restart the displacement adjustment module (5), drive the two linear push modules (6) to switch positions, and switch the linear push module (6) with the axial push assembly (8) to the working position that cooperates with the fixed worktable (2). S5. Place the magnet in the guide frame II (85) and adjust the guide insert (43) to insert into the corresponding magnet slot. Start the corresponding linear push module (6) to drive the axial push assembly (8) to move towards the iron core. Let the base II (84) drive the guide frame II (85) to abut against the end of the iron core. The push base II (81) continues to push the push rod (82). The push rod (82) pushes the magnet into the magnet slot of the iron core through the push slider (86). S6. During the process of pushing in the magnets, the push rod (82) abuts against the push rod (45) and simultaneously drives the guide plate (43) to move outward from the iron core until all magnets are assembled. S7. Reset the axial push assembly (8) and the horizontal support assembly (7) in sequence, loosen the clamping fixture (3), and take out the assembled rotor workpiece.

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