Rotor magnetizing into shaft device

Abstract

The application provides a rotor magnetizing and shaft-entering device, which comprises a magnetizing mechanism and a shaft-entering mechanism. The magnetizing mechanism is used for magnetizing an iron core assembly. The shaft-entering mechanism comprises a first sliding assembly and a shaft-pressing assembly. The first sliding assembly comprises a first working plate, a first sliding driving element and a first sliding rail. The first working plate has two or more than two first positioning through holes which are distributed along a first direction and are deviated from each other. First positioning pins of the first positioning through holes which are distributed along the first direction are sequentially deviated from each other in a preset direction. The shaft-pressing assembly comprises a shaft-pressing driving element and a clamping assembly. The clamping assembly comprises a shaft-pressing element and a clamping sleeve which are coaxially arranged. The shaft-pressing element is used for positioning and abutting against a top end of a rotating shaft. The clamping sleeve is used for clamping the iron core assembly. The shaft-pressing driving element is located above the first working plate. The shaft-pressing driving element is connected with the clamping assembly. The shaft-pressing driving element is used for driving the clamping assembly to make lifting movement. The clamping rotating shaft sequentially presses and connects a plurality of iron core assemblies, so that the plurality of iron core assemblies are angularly staggered and stacked on the rotating shaft.

Description

Technical Field

[0001] The present application belongs to the field of motor manufacturing, and more specifically, relates to a rotor magnetization shaft device. Background Art

[0002] The motor's rotor is the rotating component in the motor, used to convert electrical energy into mechanical energy and vice versa. The rotor typically consists of a shaft and a core assembly. The core assembly typically includes a rotor core and magnets. The rotor core is provided with magnetic slots, into which the magnets are mounted. After the magnets are installed in the slots, the core assembly needs to be magnetized to impart magnetic properties. The rotor core has a central axis hole located along its centerline, into which the shaft is inserted.

[0003] Some motor rotors consist of a rotating shaft and multiple core assemblies, which are sequentially mounted on the shaft along its axial direction to increase power density. When two or more core assemblies are assembled onto the shaft at the same angle, the motor rotor experiences significant torque pulsation. However, existing rotor magnetization and shaft-mounting devices cannot accommodate the staggered assembly of two or more core assemblies. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a rotor magnetization shaft device to solve the technical problem in the related art that the rotor magnetization shaft device cannot realize the angular staggered assembly of more than two core components.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of the present application are:

[0006] A rotor magnetizing shaft device is provided, comprising:

[0007] A magnetizing mechanism, used for magnetizing the core assembly;

[0008] The shaft-entering mechanism includes a first sliding assembly and a shaft-pressing assembly, wherein the first sliding assembly includes a first working plate, a first sliding drive member, and a first slide rail extending along a first direction, wherein the first working plate has two or more first positioning through holes spaced apart along the first direction, wherein first positioning pins are provided on the top periphery of the first positioning through holes, and wherein the first positioning pins of the first positioning through holes distributed along the first direction are sequentially deflected in a preset direction, and the first sliding drive member is used to drive the first working plate to slide along the first slide rail;

[0009] The pressing shaft assembly comprises a pressing shaft driving member and a clamping assembly, the clamping assembly comprises a pressing shaft member and a clamping sleeve coaxially arranged, the pressing shaft member is used for positioning the top end of the rotating shaft, and the clamping sleeve is used for clamping the core assembly, the pressing shaft driving member is located above the first working plate, the pressing shaft driving member is connected with the clamping assembly, and the pressing shaft driving member is used for driving the clamping assembly to move up and down.

[0010] The rotor magnetizing and shaft-entering device provided by the embodiment of the present application has at least the following beneficial effects: the magnetizing mechanism magnetizes a plurality of core assemblies, the plurality of core assemblies are manually or mechanically transported to the first working plate after magnetization is completed, and are respectively positioned on the plurality of first positioning through holes through the first positioning pins; the first positioning pins of the first positioning through holes distributed along the first direction are sequentially and eccentrically arranged in a preset direction, and the placement angles of the plurality of core assemblies are sequentially and eccentrically arranged; the plurality of core assemblies with the eccentric angles are sequentially slid to below the clamping assembly, the clamping assembly moves up and down under the driving of the pressing shaft driving member, the clamping rotating shaft sequentially presses and connects the plurality of core assemblies, the plurality of core assemblies are stacked and sleeved on the rotating shaft with the eccentric angles, the tooth harmonics generated by the core assemblies are offset or weakened, the torque ripple is reduced, and the motor rotor vibration and noise are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0012] Figure 1 The structure schematic diagram of the rotor magnetizing and shaft-entering device provided by the embodiment of the present application;

[0013] Figure 2 The structure schematic diagram of the shaft-entering mechanism of the rotor magnetizing and shaft-entering device provided by the embodiment of the present application;

[0014] Figure 3 The structure diagram of the shaft-entering mechanism in the embodiment of the present application;

[0015] Figure 4 The structure schematic diagram of the first sliding assembly of the shaft-entering mechanism in the embodiment of the present application;

[0016] Figure 5 The exploded view of the clamping assembly of the pressing shaft assembly of the shaft-entering mechanism in the embodiment of the present application;

[0017] Figure 6 The working schematic diagram of the pressing shaft assembly, the clamping assembly and the top shaft assembly in the embodiment of the present application;

[0018] Figure 7 for Figure 6 A partial cross-sectional view of

[0019] Figure 8 A schematic diagram of the working of the magnetization mechanism provided in an embodiment of the present application;

[0020] Figure 9 1 is a simplified structural diagram of the magnetizing mechanism in the embodiment;

[0021] Figure 10 for Figure 9 A schematic diagram of the structure of the magnetizing mechanism without the magnetizing component;

[0022] Figure 11 for Figure 10 A top view of

[0023] Figure 12 It is an exploded view of the lifting assembly of the magnetizing mechanism in the embodiment.

[0024] Among them, the main marks of the drawings in the figure are:

[0025] X, first direction; Y, second direction; Z, vertical direction;

[0026] 1. Rotating shaft; 2. Core assembly;

[0027] 10. Magnetizing mechanism; 20. Shaft insertion mechanism; 21. Shaft insertion bracket; 23. First bottom plate; 24. First top plate; 25. First connecting column; 30. Controller;

[0028] 100, first sliding assembly; 110, first working plate; 111, first positioning through hole; 112, first positioning pin; 113, first plate; 114, second plate; 120, first sliding drive member; 130, first slide rail;

[0029] 200, pressing shaft assembly; 210, pressing shaft driving member; 211, first lifting shaft; 212, pressing plate; 220, clamping assembly; 221, pressing shaft member; 222, clamping sleeve; 223, clamping shaft driving member; 224, clamping shaft hole; 225, positioning plate; 226, assembly positioning pin; 230, force sensor; 240, displacement sensor; 251, pressing shaft guide rod; 252, first adapter; 253, first elastic member; 254, first limiting sleeve; 255, pressing shaft guide hole; 256, second elastic member; 257, second adapter; 258, linkage rising hole; 260, pressing shaft bracket;

[0030] 300, top shaft assembly; 310, top shaft member; 320, top shaft driving member;

[0031] 410, first position sensor; 420, second position sensor; 431, first feeding assembly; 432, third position sensor; 441, second feeding assembly; 442, fourth position sensor; 450, fifth position sensor;

[0032] 500, second sliding assembly; 510, second working plate; 511, second positioning through hole; 520, second sliding drive member; 530, second slide rail;

[0033] 600, magnetizing assembly; 610, magnetizing bracket; 620, magnetizing head; 630, magnetizing drive unit;

[0034] 700, jacking assembly; 710, jacking drive member; 711, jacking shaft; 712, second positioning groove; 713, first positioning plane; 720, support seat; 730, second positioning pin; 740, coaxial limit block; 750, guide sleeve; 751, first positioning groove; 752, positioning notch; 760, key plate; 770, buffer; 780, crossbar;

[0035] 801. Lifting mounting frame; 802. Mounting column; 803. Sixth position sensor; 804. Barcode scanner; 805. Third feeding assembly; 806. Outer diameter detection sensor; 807. Inner diameter detection sensor; 808. Seventh position sensor. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0037] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0039] In the description of this application, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0041] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout this specification, not all references are to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0042] The rotor magnetization shaft device provided in the embodiment of the present application is now described. Figure 1 、 Figure 2 and Figure 3 The first direction X, the second direction Y and the vertical direction Z intersect each other perpendicularly. The rotor magnetization shaft device includes a magnetization mechanism 10 and a shaft-entry mechanism 20. The magnetization mechanism 10 is used to magnetize the core assembly 2.

[0043] See also Figure 4 The shaft-entry mechanism 20 includes a first sliding assembly 100 and a pressing assembly 200. The first sliding assembly 100 includes a first working plate 110, a first sliding driver 120, and a first slide rail 130 extending along a first direction X. The first working plate 110 has two or more first positioning holes 111 spaced apart along the first direction X. First positioning pins 112 are disposed along the top periphery of the first positioning holes 111. The first positioning pins 112 in the first positioning holes 111 distributed along the first direction X are sequentially deflected in a predetermined direction. The first sliding driver 120 is used to drive the first working plate 110 to slide along the first slide rail 130.

[0044] See also Figure 3 and Figure 5 The pressing shaft assembly 200 includes a pressing shaft driving member 210 and a clamping assembly 220. The clamping assembly 220 includes a coaxially arranged pressing shaft member 221 and a clamping sleeve 222. The pressing shaft member 221 is used to position and abut the top end of the rotating shaft 1, and the clamping sleeve 222 is used to clamp the iron core assembly 2. The pressing shaft driving member 210 is located above the first working plate 110. The pressing shaft driving member 210 is connected to the clamping assembly 220. The pressing shaft driving member 210 is used to drive the clamping assembly 220 to perform lifting movements.

[0045] The magnetizing mechanism 10 magnetizes the plurality of core assemblies 2. After magnetization, the plurality of core assemblies 2 are transported to the first working plate 110 manually or by a transfer robot and positioned in the plurality of first positioning holes 111 by means of the first positioning pins 112. Since the first positioning pins 112 of the first positioning holes 111 distributed along the first direction X are sequentially deflected and arranged in a preset direction, the placement angles of the plurality of core assemblies 2 are sequentially deflected and staggered. The plurality of core assemblies 2 with staggered angles slide sequentially along the first direction X to the bottom of the clamping assembly 220. The clamping assembly 220 is driven by the pressing shaft drive 210 to perform a lifting motion. The clamping shaft 1 sequentially presses the plurality of core assemblies 2, thereby achieving a stacked and sleeved connection of the plurality of core assemblies 2 with staggered angles. The tooth harmonics generated by the core assemblies 2 cancel or weaken each other, thereby reducing torque pulsation and reducing motor rotor vibration and noise.

[0046] It should be noted that the rotor magnetization shaft device provided in this embodiment realizes the staggered placement angle of the core assembly 2 through the first positioning pin 112, without the need for additional precision electronic control components such as rotating motors and encoders. It is only necessary to set first positioning pins 112 of different angles on different first positioning through holes 111. On the one hand, the manufacturing cost is greatly reduced; on the other hand, compared with the electronic control method, the mechanical method is easy to implement and has reliable accuracy.

[0047] Combine Figure 4 Each first positioning through hole 111 is configured with two first positioning pins 112, and the two first positioning pins 112 are located in the same radial direction of the first positioning through hole 111. Looking from left to right, the angle between the line connecting the first group of first positioning pins 112 and the first direction X is 0. Assume that the angle between the line connecting the second group of first positioning pins 112 and the first direction X is θ, and the angle between the line connecting the third group of first positioning pins 112 and the first direction X is 2θ. That is, in the multiple first positioning through holes 111 distributed along the first direction X, the setting angles of the first positioning pins 112 are deflected by an angle θ in sequence.

[0048] During motor operation, tooth harmonics generated by the interaction between the stator slots and the core assembly 2 are the primary source of torque ripple. When the assembly angles of the core assemblies 2 are sequentially deflected according to the deflection angle θ, the magnetic fields of adjacent core assemblies 2 form a spatial phase difference, causing the tooth harmonics to weaken each other when superimposed. Furthermore, this angular deflection creates a stepped axial misalignment of the magnetic fields of the core assemblies 2. The superimposed air gap flux density waveform becomes more sinusoidal, reducing higher-order harmonic components.

[0049] Typically, the deflection angle θ ranges from 3° to 8°. For low-speed, high-torque scenarios, the deflection angle θ can be set to 6° to 8° to enhance suppression of low-order harmonics (such as the 6th and 12th harmonics). For high-speed, low-torque scenarios, the deflection angle θ can be set to 3° to 5° to reduce high-frequency losses and improve high-speed stability. For a 4-pole, 24-slot motor, for example, when the deflection angle θ is 5°, the phase difference of the 24th tooth harmonic is 5° × 24 = 120°, and the amplitude is attenuated to cos120° = 0.5 of the original amplitude. By stacking three core assemblies 2 (with phase differences of 0°, 120°, and 240°), the harmonic amplitude can theoretically be reduced to zero.

[0050] Optionally, the deflection angle θ is 3°, 4°, 5°, 6°, 7° and 8°.

[0051] In one embodiment, combined Figure 1 The rotor magnetizing and shaft insertion device further includes a controller 30, which is electrically connected to the magnetizing mechanism 10 and the shaft insertion mechanism 20. This improves automation, controls production cadence, and ensures orderly magnetizing and shaft insertion. For example, the controller 30 is electrically connected to the first sliding drive 120 and the shaft pressing drive 210.

[0052] In one embodiment, see Figure 3 、 Figure 6 and Figure 7 As a specific embodiment of the rotor magnetization and shaft insertion device provided in the present application, the shaft pressing drive member 210 is connected to the clamping assembly 220 via a first lifting shaft 211. A pressure plate 212 is connected to the end of the first lifting shaft 211. The large area of ​​the pressure plate 212 facilitates connection with the shaft pressing member 221 and the clamping sleeve 222, thereby facilitating uniform force distribution.

[0053] In one embodiment, see Figure 3 and Figure 4A force sensor 230 is provided between the end of the first lifting shaft 211 and the pressure plate 212. The force sensor 230 is used to detect the pressure exerted on the end of the first lifting shaft 211. When multiple core assemblies 2 are assembled in staggered stages, the pressure plate 212 is lowered by the pressure drive 210 until the pressure reaches a preset value. The pressure plate 212 then stops descending, ensuring that the rotating shaft 1 and each core assembly 2 are pressed with the same force. This prevents axial or angular deviations caused by uneven force and ensures assembly consistency.

[0054] In one embodiment, see Figure 4 and Figure 6 The press assembly 200 further includes a displacement sensor 240 mounted on the press plate 212. The displacement sensor 240 moves up and down with the press plate 212 to detect the lifting and lowering displacement of the clamping sleeve 222. When multiple core assemblies 2 are assembled in staggered stages, the press drive 210 drives the press plate 212 downward. The displacement sensor 240 can identify the depth of the shaft 1 inserted into the core assembly 2, accurately controlling the press-fit depth and ensuring the axial positioning accuracy of the core assembly 2. This prevents excessive gaps or interference between adjacent core assemblies 2.

[0055] When producing motor rotors of different models, the thickness or quantity of the core assembly 2 may vary. The displacement sensor 240 provides real-time feedback on the current press-fit position, and the controller 30 automatically adjusts the stroke of the press-fit drive 210 to accommodate assembly requirements of different specifications without the need for manual resetting of mechanical limits.

[0056] Specifically, the controller 30 is electrically connected to the displacement sensor 240 and the force sensor 230 respectively to obtain a force-displacement curve to determine whether the core assembly 2 is completely in place, thereby avoiding assembly defects caused by mechanical limit errors.

[0057] In one embodiment, see Figure 6 and Figure 7As a specific embodiment of the rotor magnetization shaft device provided in the embodiment of the present application, the pressing shaft assembly 200 also includes a pressing shaft guide rod 251, a first adapter 252, a second adapter 257, a first elastic member 253 and a first limiting sleeve 254. The first adapter 252 is installed at the end of the first lifting shaft 211. The second adapter 257 has a linkage rising hole 258 that is sleeved with the first adapter 252. The linkage rising hole 258 is provided with a pressing member that presses against the first adapter 25 2, so that the second adapter 257 rises with the first adapter 252 and can be separated from the first adapter 252 when the first adapter 252 descends. The second adapter 257 has a pressing shaft guide hole 255. One end of the pressing shaft guide rod 251 is fixedly installed on the pressing plate 212, and the other end of the pressing shaft guide rod 251 passes through the pressing shaft guide hole 255 and is fixedly sleeved on the first limiting sleeve 254. The two ends of the first elastic member 253 respectively abut the first limiting sleeve 254 and the second adapter 257.

[0058] When the first lifting shaft 211 ascends, the first adapter 252 ascends, driving the second adapter 257, which is pressed against the first adapter 252 by the step, to ascend. The ascending second adapter 257 compresses the first elastic member 253, which in turn drives the pressure plate 212 upward. When the first lifting shaft 211 descends, the first adapter 252 separates from the step of the linkage lifting hole 258. Gravity and the elastic force of the first elastic member 253 press the step of the linkage lifting hole 258 against the first adapter 252, maintaining the pressed state. Simultaneously, the first adapter 252 descends to press against the pressure sensor 230 or the pressure plate 212, driving the pressure plate 212 downward.

[0059] Based on this, when the first lifting shaft 211 descends, the pressure plate 212 does not immediately descend. The first elastic member 253 absorbs the kinetic energy of the impact, converting the instantaneous peak force into a controllable, gradual force, thereby preventing the core assembly 2 from cracking or warping due to the impact force. When the first lifting shaft 211 ascends, the first adapter 252 drives the second adapter 257 upward, compressing the first elastic member 253. Only then does the first limiting sleeve 254 drive the pressure plate 212 upward, converting the instantaneous peak force into a controllable, gradual force.

[0060] When there are dimensional tolerances between different core assemblies 2 or the rotating shaft 1, the first elastic member 253 can adjust the pressure by the compression amount to ensure that each group of core assemblies 2 is subjected to uniform force during press-fitting, thereby avoiding assembly stress concentration caused by rigid contact, for example, preventing the core assemblies 2 from warping or deforming after press-fitting, and there is no need to adjust the press-fitting parameters individually for the tiny tolerances of each core assembly 2.

[0061] Optionally, force sensor 230 is located between press plate 212 and first adapter 252 and mounted on press plate 212. When first lifting shaft 211 ascends, first adapter 252 drives second adapter 257 upward through a pressing relationship, resulting in no relative force between first adapter 252, second adapter 257, and force sensor 230. When first lifting shaft 211 descends, first adapter 252 descends directly against force sensor 230, enabling precise measurement of press force.

[0062] Specifically, when the first elastic member 253 abuts the first adapter member 252 , it may abut against the upper end surface of the pressing shaft guide hole 255 or may abut against the inside of the pressing shaft guide hole 255 , which is not limited here.

[0063] In one embodiment, see Figure 5 and Figure 6 As a specific embodiment of the rotor magnetization shaft device provided in the embodiment of the present application, the shaft pressing member 221 is connected to the pressure plate 212 through the second elastic member 256. When multiple core assemblies 2 are stacked and pressed together, the angular stagger of each core assembly 2 may cause the pressing angle of the rotating shaft 1 to be offset or the axial position of the rotating shaft 1 to be offset. The second elastic member 256 deforms itself to enable the rotating shaft 1 to adaptively compensate for the pressing angle or axial installation position. Among them, the clamping sleeve 222 is rigidly connected to the pressure plate 212 to ensure that the clamping sleeve 222 and the core assembly 2 clamped therein will not adaptively compensate for position deviations, and ensure that the installation angle of the core assembly 2 is assembled according to the preset deflection angle to avoid shaking of the installation angle of the core assembly 2.

[0064] In one embodiment, see Figure 3 and Figure 6 The shaft-entry mechanism 20 further includes a shaft-entry bracket 21, on which the shaft-pressing drive member 210, the first slide rail 130, and the first sliding drive member 120 are respectively mounted. Specifically, the shaft-entry bracket 21 includes a first top plate 24, a first bottom plate 23, and a first connecting column 25. The first top plate 24 and the first bottom plate 23 are spaced apart from each other, and a plurality of first connecting columns 25 are connected between the first top plate 24 and the first bottom plate 23. The plurality of first connecting columns 25 are spaced apart along the circumference of the first top plate 24. The shaft-entry mechanism 20 further includes a shaft-pressing bracket 260, which is slidably connected between the pressing plate 212 and the first top plate 24 along the vertical direction Z.

[0065] In one embodiment, see Figure 5 and Figure 6As a specific embodiment of the rotor magnetization and shaft insertion device provided in an embodiment of the present application, the clamping assembly 220 further includes a pair of clamping shaft driving members 223. The clamping sleeve 222 has a pair of clamping shaft holes 224 extending along the same radial direction. The pair of clamping shaft driving members 223 are respectively mounted on the outer wall of the clamping sleeve 222. The output shafts of the pair of clamping shaft driving members 223 pass through the clamping shaft holes 224 to clamp the rotating shaft 1 on opposite sides of the same radial direction, ensuring that the rotating shaft 1 does not rotate after being stably installed. The pair of clamping shaft driving members 223 clamp the rotating shaft 1 in both directions to prevent axial deviation or radial tilt caused by unilateral force.

[0066] In one embodiment, see Figure 5 The clamping assembly 220 also includes a positioning plate 225, which is fixedly mounted on the clamping sleeve 222. The positioning plate 225 is provided with an assembly positioning pin 226. The installation radial direction of the assembly positioning pin 226 on the positioning plate 225 is the same as the installation angle of the first core assembly 2 assembled on the rotating shaft 1, thereby guiding the first assembled core assembly 2 to transfer from the first working plate 110 to the clamping sleeve 222 without changing the angle.

[0067] In one embodiment, see Figure 6 As a specific embodiment of the rotor magnetization shaft feeding device provided in the embodiment of the present application, the shaft feeding mechanism 20 also includes a top shaft assembly 300, which includes a top shaft member 310 and a top shaft driving member 320. The top shaft member 310 is used to position and abut the bottom end of the rotating shaft 1. The top shaft member 310 is coaxially arranged with the pressure shaft member 221. The outer diameter of the top shaft member 310 is smaller than the aperture of the first positioning through hole 111. The top shaft driving member 320 is installed below the first working plate 110. The top shaft driving member 320 is used to drive the top shaft member 310 to perform lifting and lowering movements. The top shaft member 310 and the pressure shaft member 221 jointly support the rotating shaft 1 to perform lifting and lowering movements, ensuring that the axial movement of the rotating shaft 1 is accurate and reliable. When the rotating shaft 1 needs to be lifted, the top shaft member 310 and the pressure shaft member 221 both press the rotating shaft 1. The pressing force of the top shaft member 310 is greater than the pressing force of the pressure shaft member 221, and the rotating shaft 1 rises. When the rotating shaft 1 needs to be lowered, both the jacking member 310 and the pressing member 221 press the rotating shaft 1 . The pressing force of the jacking member 310 is smaller than that of the pressing member 221 , and the rotating shaft 1 is lowered.

[0068] Optionally, the top shaft member 310 and the pressure shaft member 221 are both embedded in the positioning holes at both ends of the rotating shaft 1 to achieve stable support.

[0069] Specifically, the top shaft 310 and the pressing shaft 221 are connected with external cold sources, respectively, and the top shaft 310 and the pressing shaft 221 make the temperature of the rotating shaft 1 drop by contacting the rotating shaft 1, thereby facilitating the temporary reduction of the outer diameter of the rotating shaft 1 and the smooth insertion of the rotating shaft 1 into the iron core assembly 2. After assembly, the rotating shaft 1 is separated from the top shaft 310 and the pressing shaft 221, expands to the original outer diameter at room temperature, and is firmly clamped in the iron core assembly 2, thereby improving the assembly firmness of the rotating shaft 1 and the iron core assembly 2.

[0070] In one embodiment, referring to Figure 3 and Figure 6 , as a specific embodiment of the rotor magnetizing shaft-entering device provided in the present application, the shaft-entering mechanism 20 further comprises a first position sensor 410, the detection direction of the first position sensor 410 is perpendicular to the vertical direction Z, the detection height of the first position sensor 410 is higher than the first positioning through hole 111, and the first position sensor 410 is used to detect whether the clamping assembly 220 clamps the rotating shaft 1. If the rotating shaft 1 is detected to exist, the first sliding assembly 100 sequentially transports the iron core assembly 2 to the position directly below the pressing shaft assembly 200.

[0071] In one embodiment, referring to Figure 2 and Figure 3 , as a specific embodiment of the rotor magnetizing shaft-entering device provided in the present application, the shaft-entering mechanism 20 further comprises a second position sensor 420 located upstream of the pressing shaft assembly 200, the number of the second position sensor 420 is the same as the number of the first positioning through hole 111, all the second position sensors 420 are distributed along the first direction X with the same interval as the interval between all the first positioning through holes 111, and the second position sensor 420 is used to detect whether the first positioning through hole 111 is placed with the iron core assembly 2. All the second position sensors 420 synchronously detect whether all the iron core assemblies 2 to be assembled by one rotating shaft 1 are in place. If it is detected that a certain first positioning through hole 111 is not placed with the iron core assembly 2, the controller 30 immediately suspends the subsequent clamping and pressing shaft actions to prevent empty pressing.

[0072] In one embodiment, referring to Figure 4As a specific embodiment of the rotor magnetization and shaft insertion device provided in an embodiment of the present application, the first working plate 110 includes a first plate 113 and a second plate 114 spaced apart from each other. The first plate 113 is located below the second plate 114 and is connected to the first sliding drive member 120. The second plate 114 is provided with a first positioning pin 112. Both the first and second plates 113 and 114 have a first positioning through-hole 111 extending therethrough. A third elastic member (not shown) is provided between the first plate 113 and the second plate 114. When the pressing assembly 200 presses the rotating shaft 1 onto the core assembly 2 located on the second plate 114, the third elastic member withstands the axial impact force during press-fitting. The elastic buffering force prevents deformation of the core assembly 2 due to local stress concentration. When there is an angular deviation between the rotating shaft 1 and the core assembly 2 clamped by the clamping assembly 220, the deformation buffering of the third elastic member can flexibly guide the insertion of the rotating shaft 1, preventing it from getting stuck.

[0073] In one embodiment, combined Figure 4 A heater (not shown) is positioned around the periphery of first positioning hole 111. This heater abuts against core assembly 2 to transfer heat, thereby increasing the inner diameter of core assembly 2 and facilitating smooth press-fitting of shaft 1 and core assembly 2. After returning to room temperature, the inner diameter of core assembly 2 shrinks, securing it securely to shaft 1 through an interference fit.

[0074] In one embodiment, combined Figure 4 The first positioning pins 112 are electrically connected to the external resistance measurement circuit. The two first positioning pins 112 of each first positioning through hole 111 are embedded in the core assembly 2 to measure the resistance of the core assembly 2, thereby determining the quality of the core assembly 2.

[0075] Specifically, the two first positioning pins 112 obtain the measured resistance R1 of the core assembly 2 at the current temperature. The temperature coefficient of resistance describes how the resistance value of the core assembly 2 changes with temperature. According to the formula of temperature coefficient of resistance (TCR), , where TCR represents the temperature coefficient of resistance, R1 represents the resistance value of the core assembly 2 at the actual measured temperature T1, and R0 represents the reference resistance value of the core assembly 2 at the experimental temperature T0. The controller 30 calculates the converted resistance R2 corresponding to the experimental temperature T0 based on the measured resistance R1 and the formula TCR. Based on the difference between the converted resistance R2 and the reference resistance R0, the controller 30 determines the resistance deviation value corresponding to the core assembly 2, thereby determining the quality of the core assembly 2, such as the insulation performance of the core assembly 2 and the uniformity of the insulation coating.

[0076] In one embodiment, see Figure 2The shaft-entry mechanism 20 further includes a first feed assembly 431 and a third position sensor 432. One end of the first feed assembly 431 is connected to the magnetizing mechanism 10, and the other end is connected to the first sliding assembly 100, thereby transferring the core assembly 2 from the magnetizing mechanism 10 to the shaft-entry mechanism 20. The third position sensor 432 is used to detect whether a core assembly 2 is placed in the first feed assembly 431. By counting the number of transferred core assemblies 2, the required number of core assemblies 2 can be subsequently transferred to the first working plate 110.

[0077] Optionally, the first feeding assembly 431 transports the core assembly 2 along the first direction X.

[0078] Optionally, the first feeding assembly 431 is located between the magnetizing mechanism 10 and the pressing assembly 200 , and the three are spaced apart along the second direction Y and do not interfere with each other.

[0079] In one embodiment, see Figure 2 The shaft feeding mechanism 20 further includes a second feeding assembly 441 and a fourth position sensor 442. The second feeding assembly 441 is used to convey the rotating shaft 1 to the pressing assembly 200. The fourth position sensor 442 is used to detect whether the rotating shaft 1 is placed in the second feeding assembly 441.

[0080] Optionally, the second feeding assembly 441 transports the core assembly 2 along the second direction Y. The second feeding assembly 441 and the first feeding assembly 431 are located on both sides of the first sliding assembly 100 in the second direction Y and do not interfere with each other.

[0081] Optionally, the second feeding assembly 441 is also used to transport the assembled rotor and core assembly 2. As the second feeding assembly 441 slides along the second direction Y toward the first working plate 110, it supplies the shaft 1. Simultaneously, it receives the assembled rotor and core assembly 2 and returns along the second direction Y.

[0082] In one embodiment, see Figure 2 The shaft insertion mechanism 20 further includes a fifth position sensor 450, which is located at the end of the first sliding assembly 100 away from the pressing assembly 200. The fifth position sensor 450 is used to detect whether the first working plate 110 is located at the end of the first sliding assembly 100 away from the pressing assembly 200, thereby facilitating the transfer of the core assembly 2 onto the first working plate 110 without interfering with the transfer and press assembly.

[0083] In one embodiment, see Figure 1 As a specific implementation of the rotor magnetization shaft device provided in an embodiment of the present application, the rotor magnetization shaft device also includes a transfer robot, which is used to transfer the magnetized core assembly 2 from the second working plate 510 to the first working plate 110.

[0084] In one embodiment, see Figure 8 and Figure 9 As a specific implementation of the rotor magnetization shaft device provided in an embodiment of the present application, the magnetization mechanism 10 includes a second sliding component 500, a magnetization component 600 and two or more lifting components 700.

[0085] Combine Figure 10 and Figure 11 The second sliding assembly 500 includes a second working plate 510, a second sliding driver 520, and a second slide rail 530. The second working plate 510 has two or more second positioning holes 511 spaced apart in a straight line. The second sliding driver 520 is used to drive the second working plate 510 to slide along the second slide rail 530. The magnetizing assembly 600 includes a magnetizing bracket 610 and a magnetizing head 620. The magnetizing head 620 is mounted on the magnetizing bracket 610 and is located above the second slide rail 530. Each lifting assembly 700 is installed below a second positioning through hole 511. The lifting assembly 700 includes a lifting drive 710, a support seat 720 and a second positioning pin 730. The support seat 720 is movably arranged in the corresponding second positioning through hole 511. The second positioning pin 730 is protrudingly arranged on the support seat 720. The second positioning pin 730 is used for positioning and embedding in the core assembly 2. The lifting drive 710 is installed on the second working plate 510. The lifting drive 710 is used to drive the support seat 720 to perform lifting movements so that the core assembly 2 located on the support seat 720 enters the magnetizing head 620.

[0086] Each lifting assembly 700 is installed below a second positioning through-hole 511. The lifting assembly 700 includes a lifting drive 710, a support seat 720, and a second positioning pin 730. The support seat 720 is movably arranged in the corresponding second positioning through-hole 511. The second positioning pin 730 is protruding from the support seat 720. The second positioning pin 730 is used to position and embed in the core assembly 2 to prevent the core assembly 2 from rotating on the support seat 720, thereby guiding and limiting the placement angle of the core assembly 2. The lifting drive 710 is installed on the second working plate 510. The lifting drive 710 is used to drive the support seat 720 to perform lifting movements so that the core assembly 2 located on the support seat 720 enters the magnetizing head 620 for magnetization.

[0087] Alternatively, since the second locating pins 730 of different jacking assemblies 700 are sequentially deflected in a preset direction, i.e., the deflection angles of all second locating pins 730 and all first locating pins 112 correspond one-to-one, the core assembly 2 can maintain a constant angle during the transfer process without the need for angle adjustment. Of course, the second locating pins 730 of different jacking assemblies 700 can also be set at the same angle. After the core assembly 2 is subsequently transferred to the first working plate 110, the first locating pins 112 can be used to guide the core assembly 2 to achieve sequential deflection.

[0088] In one embodiment, combined Figure 9 、 Figure 10 and Figure 12 The lifting assembly 700 also includes a coaxial limit block 740, which is installed on the top of the support seat 720. The outer diameter of the coaxial limit block 740 matches the inner diameter of the core assembly 2. Based on this, the coaxial limit block 740 makes the core assembly 2 placed on the support seat 720 coaxial with it, which is beneficial for forcing the core assembly 2 to remain aligned with the axis of the rotating shaft 1 during subsequent magnetization. By improving the coaxiality of the core assembly 2 and the magnetizing head 620, the air gap magnetic flux distribution is made more uniform. In addition, the coaxial limit block 740 realizes the coaxiality constraint of the core assembly 2 by means of mechanical hard constraint. The solution is easy to implement and has high reliability.

[0089] In one embodiment, see Figure 12 Each lifting assembly 700 has two or more second locating pins 730, which are spaced apart circumferentially around the coaxial stopper 740. The two or more second locating pins 730 further enhance the positioning of the core assembly 2. Without the constraints of the coaxial stopper 740, the two or more second locating pins 730 can prevent the core assembly 2 from shaking.

[0090] Optionally, in each lifting assembly 700, the number of second positioning pins 730 is two, and the line connecting the two second positioning pins 730 passes through the top view center of the support seat 720. On the one hand, it improves the coaxiality of the core assembly 2 and the lifting assembly 700; on the other hand, it avoids excessive positioning caused by too many second positioning pins 730, thereby avoiding the difficulty in embedding the core assembly 2 due to processing errors of multiple second positioning pins 730.

[0091] In one embodiment, see Figure 12 The lifting assembly 700 further includes a guide sleeve 750, which is mounted on the second working plate 510 and coaxially arranged with the corresponding second positioning through-hole 511. The guide sleeve 750 is used to movably sleeve a lifting shaft 711 of the lifting drive member 710. The lifting shaft 711 moves within the guide sleeve 750, forcing the lifting direction to coincide with the vertical direction Z, ensuring that the core assembly 2 enters the magnetizing head 620 along the vertical direction Z and preventing the axis of the core assembly 2 from deviating.

[0092] In one embodiment, combined Figure 12 The inner wall of the guide sleeve 750 has a first positioning groove 751, and the lifting shaft 711 of the lifting drive 710 has a second positioning groove 712. The lifting assembly 700 also includes a key plate 760, which is respectively embedded in the first positioning groove 751 and the second positioning groove 712. The key plate 760 maintains a fixed angular relationship between the lifting shaft 711 and the guide sleeve 750 through rigid constraints, preventing the lifting shaft 711 from circumferentially deviating due to torque fluctuations or external forces when the lifting drive 710 is started and stopped, preventing the lifting shaft 711 and the core assembly 2 from angularly rotating during the lifting process, and ensuring that the core assembly 2 reliably enters the magnetizing head 620 at an angular position.

[0093] In one embodiment, combined Figure 12 The lifting shaft 711 of the lifting drive 710 has a first positioning flat surface 713, and the guide sleeve 750 has a positioning notch 752. The positioning notch 752 and the first positioning flat surface 713 are located in the same radial direction of the lifting shaft 711 of the lifting drive 710. During installation, the corresponding relationship between the first positioning flat surface 713 and the positioning notch 752 can quickly determine the circumferential position of the lifting shaft 711 relative to the guide sleeve 750, without the need for additional calibration steps.

[0094] In one embodiment, see Figure 12 The magnetizing mechanism 10 further includes a lifting mounting frame 801, and all lifting driving members 710 are installed on the lifting mounting frame 801 at intervals along the first direction X, so that all lifting driving members 710 are installed on the second working plate 510 based on the same reference to avoid cumulative errors.

[0095] Specifically, the jacking mounting frame 801 is located below the second working plate 510 and is fixedly mounted to the second working plate 510 via a plurality of mounting posts 802. The plurality of mounting posts 802 rigidly connect the jacking mounting frame 801 to the second working plate 510, thereby evenly transferring the load of each jacking drive member 710 to the entire second working plate 510.

[0096] In one embodiment, see Figure 12 Lifting assembly 700 further includes a buffer 770, which is fixedly mounted to the fixed portion of lifting drive 710. The output end of buffer 770 is connected to lifting shaft 711 of lifting drive 710. When lifting shaft 711 starts or stops, buffer 770 absorbs kinetic energy through a damping medium (such as hydraulic oil or air), thereby attenuating the vibration frequency of lifting shaft 711 and preventing angular deviation of core assembly 2 caused by vibration.

[0097] In one embodiment, the buffer 770 and the lifting drive member 710 are arranged side by side to avoid spatial interference with axial components such as the guide sleeve 750. The force output by the two is in the same direction, so that the buffer 770 can more effectively buffer the lifting shaft 711 in the vertical direction Z.

[0098] Specifically, the output end of the buffer 770 is connected to the lifting shaft 711 through the cross bar 780 to achieve force transmission.

[0099] In one embodiment, each lifting drive member 710 corresponds to two buffers 770, and the two buffers 770 are located on opposite sides of the lifting shaft 711 of the lifting drive member 710. Symmetrical damping force is used to offset the lateral torque borne by the lifting shaft 711, thereby eliminating the axial deflection that may be caused by the unilateral buffer 770.

[0100] Optionally, the two buffers 770 are located on opposite sides of the lifting shaft 711 in the first direction X.

[0101] In one embodiment, see Figure 9 The magnetizing mechanism 10 also includes a plurality of sixth position sensors 803 spaced apart along the first direction X. Each second positioning through hole 511 corresponds to a sixth position sensor 803. The sixth position sensor 803 is used to detect whether the second positioning through hole 511 is placed in the core assembly 2, and to provide real-time feedback on whether the core assembly 2 is in place, thereby avoiding missing of the core assembly 2 and improving assembly accuracy.

[0102] In one embodiment, combined Figure 8 and Figure 9 The magnetizing head 620 is mounted on the magnetizing bracket 610 via a magnetizing driver 630. The magnetizing driver 630 is used to drive the magnetizing head 620 to move up and down. During magnetization, the magnetizing driver 630 drives the magnetizing head 620 downward, shortening the time it takes for the magnetizing head 620 to engage the core assembly 2 and improving magnetization efficiency. After magnetization is complete, the magnetizing driver 630 drives the magnetizing head 620 upward to prevent interference between the magnetizing head 620 and the lifting assembly 700.

[0103] In one embodiment, combined Figure 8 The magnetizing mechanism 10 further includes a code scanner 804 , which is located in the loading section of the second sliding assembly 500 and is used to record the code of the core assembly 2 .

[0104] Specifically, the magnetizing mechanism 10 also includes a third feeding assembly 805, an outer diameter detection sensor 806, an inner diameter detection sensor 807 and a seventh position sensor 808. The third feeding assembly 805 provides the core assembly 2 to the second sliding assembly 500 along the second direction Y. The barcode scanner 804, the outer diameter detection sensor 806, the inner diameter detection sensor 807 and the seventh position sensor 808 are spaced along the transmission direction of the third feeding assembly 805 in sequence, and the core assembly 2 is scanned, outer diameter detected, inner diameter detected, and position detected in sequence. When the detection is qualified, it reaches the seventh position sensor 808, and the core assembly 2 is placed in the first positioning through hole 111 manually or by a transfer robot.

[0105] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0106] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. The rotor magnetizing shaft device is characterized by: include: A magnetizing mechanism, used for magnetizing the core assembly; The shaft-entering mechanism includes a first sliding assembly and a shaft-pressing assembly, wherein the first sliding assembly includes a first working plate, a first sliding drive member, and a first slide rail extending along a first direction, wherein the first working plate has two or more first positioning through holes spaced apart along the first direction, wherein first positioning pins are provided on the top periphery of the first positioning through holes, and wherein the first positioning pins of the first positioning through holes distributed along the first direction are sequentially deflected in a preset direction, and the first sliding drive member is used to drive the first working plate to slide along the first slide rail; The pressure shaft assembly includes a pressure shaft driving member and a clamping assembly, the clamping assembly includes a pressure shaft member and a clamping sleeve arranged coaxially, the pressure shaft member is used to position the top end of the abutting shaft, the clamping sleeve is used to clamp the iron core assembly, the pressure shaft driving member is located above the first working plate, the pressure shaft driving member is connected to the clamping assembly, and the pressure shaft driving member is used to drive the clamping assembly to perform lifting motion; The pressure shaft driving member is connected to the clamping assembly via a first lifting shaft; a pressure plate is connected to the end of the first lifting shaft, and the pressure plate is connected to the pressure shaft member and the clamping sleeve respectively; The pressure shaft assembly also includes a pressure shaft guide rod, a first adapter, a second adapter, a first elastic member and a first limit sleeve. The first adapter is installed at the end of the first lifting shaft, and the second adapter has a linkage rising hole that is sleeved with the first adapter. A step is provided in the linkage rising hole to press the first adapter, so that the second adapter rises with the first adapter and can be separated from the first adapter when the first adapter descends. The second adapter has a pressure shaft guide hole, one end of the pressure shaft guide rod is fixedly installed on the pressure plate, and the other end of the pressure shaft guide rod passes through the pressure shaft guide hole and is fixedly sleeved on the first limit sleeve. The two ends of the first elastic member respectively abut the first limit sleeve and the second adapter.

2. The rotor magnetizing shaft device according to claim 1, characterized in that: A force sensor is provided between the end of the first lifting shaft and the pressure plate, and the force sensor is used to detect the pressure exerted on the end of the first lifting shaft; And / or, the pressure shaft assembly further includes a displacement sensor, which is mounted on the pressure plate. The displacement sensor moves up and down along with the pressure plate to detect the lifting displacement of the clamping sleeve.

3. The rotor magnetizing shaft device according to claim 1, characterized in that: The clamping assembly also includes a pair of clamping shaft driving parts, the clamping sleeve has a pair of clamping shaft holes extending along the same radial direction, the pair of clamping shaft driving parts are respectively installed on the outer wall of the clamping sleeve, and the output shafts of the pair of clamping shaft driving parts respectively clamp the opposite sides of the same radial direction of the rotating shaft through the clamping shaft holes.

4. The rotor magnetizing shaft device according to claim 1, characterized in that: The shaft entry mechanism also includes a top shaft assembly, which includes a top shaft member and a top shaft driving member. The top shaft member is used to position and abut the bottom end of the rotating shaft. The top shaft member is coaxially arranged with the pressure shaft member. The outer diameter of the top shaft member is smaller than the aperture of the first positioning through hole. The top shaft driving member is installed below the first working plate, and the top shaft driving member is used to drive the top shaft member to perform lifting movements.

5. The rotor magnetizing shaft device according to claim 1, characterized in that: The shaft-entry mechanism further includes a first position sensor, wherein a detection direction of the first position sensor is perpendicular to the vertical direction, a detection height of the first position sensor is higher than the first positioning through hole, and the first position sensor is used to detect whether the clamping assembly clamps the rotating shaft; And / or, the shaft entry mechanism also includes a second position sensor located upstream of the pressure shaft assembly, the number of the second position sensors is the same as the number of the first positioning through holes, all the second position sensors are spaced apart along the first direction, and the spacing between them is the same as that between all the first positioning through holes, and the second position sensor is used to detect whether the iron core assembly is placed in the first positioning through hole.

6. The rotor magnetizing shaft device according to claim 1, characterized in that: The first working plate includes a first plate and a second plate spaced apart in an upper and lower direction, the first plate is located below the second plate, the first plate is connected to the first sliding drive member, the second plate is provided with the first positioning pin, the first plate and the second plate both have the first positioning through hole, and a third elastic member is provided between the first plate and the second plate.

7. The rotor magnetizing shaft device according to any one of claims 1 to 6, characterized in that: The magnetizing mechanism includes a second sliding assembly, a magnetizing assembly, and two or more lifting assemblies. The second sliding assembly includes a second working plate, a second sliding drive, and a second slide rail. The second working plate has two or more second positioning through holes spaced apart in a straight line. The second sliding drive is used to drive the second working plate to slide along the second slide rail. The magnetizing assembly includes a magnetizing bracket and a magnetizing head, wherein the magnetizing head is mounted on the magnetizing bracket and is located above the second slide rail; Each of the jacking components is installed below one of the second positioning through holes. The jacking component includes a jacking drive, a support seat and a second positioning pin. The support seat is movably arranged in the corresponding second positioning through hole. The second positioning pin is protrudingly arranged on the support seat. The second positioning pin is used for positioning and embedding in the core component. The jacking drive is installed on the second working plate. The jacking drive is used to drive the support seat to perform lifting movements so that the core component located on the support seat enters the magnetizing head.

8. The rotor magnetizing shaft device according to claim 7, characterized in that: The rotor magnetization shaft device further includes a transfer robot, which is used to transfer the magnetized core assembly from the second working plate to the first working plate.

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