A stator core calibration device for a conical rotor three-phase asynchronous motor and its usage method

Abstract

The present invention discloses a stator core calibration device for a conical rotor three-phase asynchronous motor and its usage method, which relates to the technical field of stator core production. It includes a working platform, on the top of which a vibration motor is fixedly installed. Above the vibration motor, there is a U-shaped housing. The bottom end of the U-shaped housing is connected to the top end of the working platform through four shock-absorbing springs. A vibration motor is installed at the bottom end of the U-shaped housing, and the execution end of the vibration motor is drivingly connected to a positioning rod. A through hole for the positioning rod to pass through is provided at the bottom end of the U-shaped housing, and the inner diameter of the through hole > the outer diameter of the positioning rod. A calibration rotor sleeved on the positioning rod is arranged inside the U-shaped housing, and the outer wall of the calibration rotor matches the inner wall of the stator core. A movable notch calibration mechanism is installed at the top end of the U-shaped housing, and the execution end of the notch calibration mechanism is used to insert into the notch of the stator iron core sheet, and cooperate with the vibration of the vibration motor to calibrate the notches of multiple stator iron core sheets.

Description

Technical Field

[0001] The patent of this invention relates to the field of stator core production technology, specifically a stator core calibration device for a conical rotor three-phase asynchronous motor and its use method. Background Art

[0002] The stator core is the core of the stator in electric motors (such as asynchronous and synchronous motors). It is primarily composed of stacked silicon steel sheets, providing a magnetic flux path and conducting electromagnetic energy. The stator core plays a crucial role in the operation of the motor. The stator core is typically made of silicon steel sheets (also called silicon steel plates), which have high magnetic permeability and are effective at conducting electromagnetic fields. The silicon steel sheets are often electroplated to reduce losses. To minimize hysteresis and eddy current losses, the stator core uses a laminated structure with an insulating coating (such as lacquer) between each sheet, which helps reduce eddy current losses. The slots in the stator core house the stator winding coils, and the accuracy of these slots directly affects the placement and securement of the coils. Irregular slots or those that do not meet design requirements can prevent the coils from being accurately placed in the slots, potentially leading to coil short circuits or irregular windings, thus compromising the motor's efficiency and safety. To address these shortcomings, we provide an automated, highly calibrated stator core calibration device for conical rotor three-phase asynchronous motors and a method for its use. Summary of the invention

[0003] The purpose of this patent is to provide a stator core calibration device for a conical rotor three-phase asynchronous motor and its use method to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the patent of the present invention provides the following technical solutions: a stator core calibration device for a conical rotor three-phase asynchronous motor, comprising a working platform, a vibration motor is fixedly installed on the top of the working platform, a U-shaped shell is arranged above the vibration motor, the bottom end of the U-shaped shell is connected to the top of the working platform through four shock-absorbing springs, the bottom end of the U-shaped shell is installed with a vibration motor, the executive end of the vibration motor is transmission-connected with a positioning rod, the bottom end of the U-shaped shell is provided with a through hole for the positioning rod to pass through, the inner diameter of the through hole is greater than the outer diameter of the positioning rod, a calibration rotor sleeved on the positioning rod is arranged in the U-shaped shell, the outer wall of the calibration rotor matches the inner wall of the stator core, a movable notch calibration mechanism is installed on the top of the U-shaped shell, the executive end of the notch calibration mechanism is used to be inserted into the notch of the stator iron sheet, and cooperate with the vibration of the vibration motor to calibrate the notches of multiple stator iron sheets.

[0005] Furthermore, two groups of movable units are symmetrically arranged on the upper part of the outer walls on both sides of the U-shaped shell, and the slot calibration mechanism includes a connecting rod fixedly installed between the two groups of movable units and a calibration rod for inserting into the slot of the stator iron sheet. A fixing block for fixing the rotating motor is installed on the connecting rod, and a driving mechanism for driving the calibration rod to insert into the slot of the stator iron sheet is fixedly installed on the execution end of the rotating motor.

[0006] Furthermore, two transverse through grooves are symmetrically provided on the upper part of the outer walls on both sides of the U-shaped shell, and the movable unit includes a mounting plate slidably connected to the top end of the outer wall of the U-shaped shell and two mounting brackets symmetrically and fixedly provided on the lower part of the outer walls on both sides of the mounting plate, and a movable wheel with a bottom end that is in contact with the bottom end of the inner wall of the transverse through groove is rotatably provided between the two mounting brackets, and a movable motor that drives the movable wheel to rotate is installed on the outer wall of the mounting bracket away from the fixed block, and the connecting rod is fixedly installed between the two mounting plates.

[0007] Furthermore, the driving mechanism includes a box body whose rear outer wall is fixedly connected to the execution end of the rotating motor, and two symmetrical holes for the calibration rod to pass through are provided at the top and bottom ends of the box body, and two groups of driving units are symmetrically provided in the box body, and the driving unit includes two driving wheels symmetrically provided in the upper and lower parts, and the driving wheels are connected to the driven gears provided on the rear side of the box body through a connecting shaft, and the connecting shaft is provided to pass through the box body, and a driving gear is provided to mesh between the two driven gears in the same group, and two special-shaped brackets are symmetrically installed on the rear side walls of the box body on both sides of the rotating motor, and a driving motor for driving the corresponding side driving gear to rotate is installed on the rear side wall of the special-shaped bracket, and the driving gear is provided between the box body and the special-shaped bracket, and the calibration rod passes between the two groups of driving units, and the outer wall of the calibration rod is in contact with the outer wall of the driving wheel.

[0008] Furthermore, a screw rod is rotatably connected between the two mounting brackets located above the connecting rod, and a servo motor that drives the screw rod to rotate is installed on one of the mounting brackets. The fixed block is a screw seat, and the screw seat is threadedly connected to the screw rod. A U-shaped opening is provided at the bottom end of the screw seat, and the inner wall of the U-shaped opening is fitted with and slidably connected to the outer wall of the connecting rod.

[0009] Furthermore, two limiting grooves are symmetrically provided at the bottom end of the inner wall of the U-shaped shell on the left and right sides of the through hole. The limiting grooves are used for inserting the bottom end of the calibration rod, and the horizontal length of the limiting grooves is greater than the radius of the stator core.

[0010] A method for using a stator core calibration device for a conical rotor three-phase asynchronous motor based on the stator core calibration device includes the following steps:

[0011] S1: Sleeve the stator core onto the calibration rotor;

[0012] S2: Start the mobile unit, and the mobile unit drives the notch calibration mechanism to move towards the positioning rod;

[0013] S3: Start the rotary motor, and the rotary motor adjusts the inclination angle of the calibration rod to correspond to the inclination angle of the inner wall of the stator core;

[0014] S4: Start the servo motor, and the servo motor drives the fixed block through the lead screw to drive the bottom end of the calibration rod to align with the notch at the top of the stator core above one of the limiting grooves;

[0015] S5: Start the drive mechanism to drive the calibration rod to insert into the notch of the stator core until the bottom end of the calibration rod inserts into the limiting groove;

[0016] S6: Start the vibration motor, and the vibration motor drives the stator core to vibrate through the positioning rod and the calibration rotor in sequence, and cooperate with the limiting of the notch of the stator core by the calibration rod to complete the calibration of the stator core.

[0017] The beneficial effects achieved by this invention patent are as follows:

[0018] 1. Through the combination of the vibration motor and the calibration rotor, driving the stator core to vibrate, and cooperating with the precise limiting of the notch of the stator core by the calibration rod, the efficient and precise calibration of the notch of the stator core is realized. This calibration method can not only quickly adjust the protruding stator iron core sheets, but also ensure that the notches of all stator iron core sheets are aligned, greatly improving the accuracy and efficiency of calibration.

[0019] 2. The calibration rotor in the device is replaceable to adapt to the calibration requirements of different models of stator cores. At the same time, the notch calibration mechanism has mobility and angle adjustability, and can flexibly adjust the position and inclination angle of the calibration rod according to the inclination angle of the inner wall of the stator core, further enhancing the applicability and flexibility of the device.

[0020] 3. Through the remote control of the remote controller, the automatic control of the vibration motor, the mobile motor, the rotary motor and the servo motor can be realized, thus simplifying the operation process, reducing the degree of manual intervention, and improving the production efficiency and operation convenience.

[0021] 4. The U-shaped housing is connected to the working platform through shock-absorbing springs, effectively reducing the influence of vibration on the overall stability of the device. At the same time, the mobile unit adopts a combined design of a mounting plate, a mounting frame and mobile wheels, ensuring the stability and accuracy of the notch calibration mechanism during the moving process.

[0022] 5. After calibration, the secondary calibration can be realized by reversely adjusting the calibration rod, thereby further improving the calibration accuracy and quality. This design takes into account the strict requirements for calibration quality in the actual production process and provides a strong guarantee for the improvement of product quality. Brief Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of a stator core calibration device for a conical rotor three - phase asynchronous motor in Embodiment 1;

[0024] Figure 2 It is a schematic structural diagram of the driving mechanism in Embodiment 1;

[0025] Figure 3 It is a flowchart of the usage method of a stator core calibration device for a conical rotor three - phase asynchronous motor in Embodiment 2. Detailed Embodiment

[0026] The following further describes the present invention in combination with the drawings. Embodiment

[0027] As Figure 1 shown, the present invention discloses a stator core calibration device for a conical rotor three - phase asynchronous motor, including: a working platform 1, a vibration motor 3 is fixedly installed at the top of the working platform 1, an inverted U - shaped housing 2 is arranged above the vibration motor 3, the bottom end of the inverted U - shaped housing 2 is connected to the top of the working platform 1 through four shock - absorbing springs 7 (both ends of the shock - absorbing spring 7 are fixedly connected to the inverted U - shaped housing 2 and the working platform 1 respectively), a vibration motor 3 is installed at the bottom end of the inverted U - shaped housing 2, the execution end of the vibration motor 3 is drivingly connected to a positioning rod 31, a through - hole for the positioning rod 31 to pass through is arranged at the bottom end of the inverted U - shaped housing 2 (not shown in the figure), the inner diameter of the through - hole > the outer diameter of the positioning rod 31, a calibration rotor 4 sleeved on the positioning rod 31 is arranged inside the inverted U - shaped housing 2, the outer wall of the calibration rotor 4 matches the inner wall of the stator core, a movable notch calibration mechanism 5 is installed at the top of the inverted U - shaped housing 2, and the execution end of the notch calibration mechanism 5 is used to insert into the notch of the stator iron core sheet, and cooperate with the vibration of the vibration motor 3 to calibrate the notches of multiple stator iron core sheets.

[0028] Furthermore, as Figure 1 shown, two groups of moving units 6 are symmetrically arranged on the upper parts of the outer walls on both sides of the inverted U - shaped housing 2, the notch calibration mechanism 5 includes a connecting rod 51 fixedly installed between the two groups of moving units 6 and a calibration rod 54 (the execution end of the notch calibration mechanism 5) for inserting into the notch of the stator iron core sheet, a fixing block 52 for fixing a rotating motor 53 is installed on the connecting rod 51, and the execution end of the rotating motor 53 is fixedly installed with a driving mechanism 55 for driving the calibration rod 54 to insert into the notch of the stator iron core sheet.

[0029] Furthermore, as Figure 1As shown, two transverse through grooves 21 are symmetrically provided on the upper part of the outer walls on both sides of the U-shaped shell 2, and the movable unit 6 includes a mounting plate 61 slidably connected to the top of the outer wall of the U-shaped shell 2 and two mounting brackets 62 symmetrically and fixedly provided on the lower part of the outer walls on both sides of the mounting plate 61. A movable wheel 63 with its bottom end fitted with the bottom end of the inner wall of the transverse through groove 21 is rotatably provided between the two mounting brackets 62. A movable motor 64 for driving the movable wheel 63 to rotate is installed on the outer wall of the mounting bracket 62 away from the fixed block 52. The connecting rod 51 is fixedly installed between the two mounting plates 61, and the opposite sides of the two mounting brackets 62 on the same side are respectively fitted with the inner wall and outer wall of the U-shaped shell 2 and are slidably connected.

[0030] Further, such as Figure 1-2 As shown, the driving mechanism 55 includes a box body 551 with a rear outer wall fixedly connected to the execution end of the rotating motor 53. Two jacks 552 for the calibration rod 54 to pass through are symmetrically provided at the top and bottom ends of the box body 551. Two sets of driving units are symmetrically provided in the box body 551. The driving units include two driving wheels 553 symmetrically provided in the upper and lower parts. The driving wheels 553 are connected to the driven gear 554 provided on the rear side of the box body 551 through a connecting shaft. The connecting shaft is provided through the box body 551. A driving gear 555 is meshed between the two driven gears 554 of the group. Two special-shaped brackets 556 are symmetrically installed on the rear side walls of the box body 551 on both sides of the rotating motor 53. A driving motor 557 for driving the corresponding side driving gear 555 to rotate is installed on the rear side wall of the special-shaped bracket 556. The driving gear 555 is arranged between the box body 551 and the special-shaped bracket 556. The calibration rod 54 passes between the two groups of drive units, and the outer wall of the calibration rod 54 is in contact with the outer wall of the driving wheel 553.

[0031] Further, such as Figure 1 As shown, a screw rod 56 is rotatably connected between two mounting plates 61 located above the connecting rod 51, and a servo motor 561 for driving the screw rod 56 to rotate is installed on one of the mounting plates 61. The fixed block 52 is a screw seat, which is threadedly connected to the screw rod 56. A U-shaped opening is provided at the bottom end of the screw seat, and the inner wall of the U-shaped opening is fitted with and slidably connected to the outer wall of the connecting rod 51.

[0032] Further, such as Figure 1 As shown, two limiting grooves 22 are symmetrically provided at the bottom end of the inner wall of the U-shaped shell 2 on the left and right sides of the through hole. The limiting grooves 22 are used for inserting the bottom end of the calibration rod 54. The horizontal length of the limiting grooves 22 is greater than the radius of the stator core.

[0033] Furthermore, a remote controller (not shown) is included, and the vibration motor 3, the moving motor 64, the rotating motor 53 and the servo motor 561 are all connected to the remote controller signal.

[0034] Based on the above structure, Figure 1-2As shown in the figure, during use, first select a suitable calibration rotor 4 according to the model of the stator core to be calibrated, and sleeved the calibration rotor 4 on the positioning rod 31. Then, sleeve the stator core on the calibration rotor 4. Start the moving motor 64 with the remote control. The moving motor 64 drives the moving wheel 63 to move along the transverse through groove 21. During this process, the mounting plate 61 slides along the top of the side wall of the U-shaped housing 2. The moving unit 6 drives the notch calibration mechanism 5 to move towards the positioning rod 31 until the bottom end of the calibration rod 54 is vertically aligned with any limit groove 22. Then, input the inclination angle of the inner wall of the stator core of this model and the inclination direction of the calibration rod 54 into the remote control. Then, rotate the motor 53. The rotating motor 53 adjusts the inclination angle of the calibration rod 54 to correspond to the inclination angle of the inner wall of the stator core. After the inclination angle of the calibration rod 54 is matched, start the servo motor 561. The servo motor 561 drives the fixed block 52 through the lead screw 56 to drive the calibration rod 54 to align with the notch at the top of the stator core above the corresponding limit groove 22 (for example: if the bottom end of the calibration rod 54 is inclined to the left, the calibration rod 54 moves to the left). Then, start the driving motor 557 with the remote control. The two driving motors 557 rotate relatively and synchronously. The driving motor 557 drives the two driven gears 554 of the same unit to rotate in the same direction through the meshing of the driving gear 555. The driven gear 554 drives the calibration rod 54 to insert into the notch of the stator core through the connecting shaft driving wheel 553 until the bottom end of the calibration rod 54 is inserted into the limit groove 22. Then, start the vibration motor 3 with the remote control. The vibration motor 3 drives the stator core to vibrate through the positioning rod 31 and the calibration rotor 4 in sequence, and cooperates with the limit of the notch of the stator core by the calibration rod 54 to complete the calibration of the stator core;

[0035] Specifically, during the vibration process, the inner wall of the notch of the stator core will continuously contact the outer wall of the calibration rod 54. The calibration rod 54 generates a reaction force on the protruding notch of the stator iron chip, causing the protruding stator iron chip to rotate until the notches of all stator iron chips are aligned, thus completing the calibration.

[0036] Further, after calibration, the calibration rod 54 located in the notch of the left stator core can be withdrawn, and the inclination angle and inclination direction of the calibration rod 54 are adjusted in the reverse direction, so that the calibration rod 54 can be inserted into the notch of the stator core in the symmetric direction of the original calibration side for secondary calibration, thereby further ensuring the calibration quality. Embodiment

[0037] Please refer to Figure 3 , a method for using a stator core calibration device for a conical rotor three-phase asynchronous motor implemented based on a stator iron chip calibration device, includes the following steps:

[0038] S1: Sleeve the stator core on the calibration rotor 4;

[0039] S2: Start the mobile unit 6, and the mobile unit 6 drives the notch calibration mechanism 5 to move towards the positioning rod 31;

[0040] S3: Start the rotary motor 53, and the rotary motor 53 adjusts the inclination angle of the calibration rod 54 to correspond to the inclination angle of the inner wall of the stator core;

[0041] S4: Start the servo motor 561, and the servo motor 561 drives the fixed block 52 through the lead screw 56 to align the bottom end of the calibration rod 54 with the notch at the top of the stator core above one of the limiting slots 22;

[0042] S5: Start the driving mechanism 55 to drive the calibration rod 54 to insert into the notch of the stator core until the bottom end of the calibration rod 54 inserts into the limiting slot 22;

[0043] S6: Start the vibration motor 3, and the vibration motor 3 drives the stator core to vibrate through the positioning rod 31 and the calibration rotor 4 in sequence, and cooperates with the limiting of the notch of the stator core by the calibration rod 54 to complete the calibration of the stator core.

[0044] The above is only the preferred specific embodiment of the present invention for patent, but the protection scope of the present invention for patent is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention for patent, according to the technical solution and inventive concept of the present invention for patent, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention for patent.

Claims

1. A stator core calibration device for a conical rotor three-phase asynchronous motor, including a working platform (1), characterized in that, A vibration motor (3) is fixedly installed at the top of the working platform (1). Above the vibration motor (3), there is a U-shaped housing (2). The bottom end of the U-shaped housing (2) is connected to the top end of the working platform (1) through four shock-absorbing springs (7). A vibration motor (3) is installed at the bottom end of the U-shaped housing (2). The execution end of the vibration motor (3) is drivingly connected to a positioning rod (31). A through hole for the positioning rod (31) to pass through is provided at the bottom end of the U-shaped housing (2). The inner diameter of the through hole > the outer diameter of the positioning rod (31). A calibration rotor (4) sleeved on the positioning rod (31) is arranged inside the U-shaped housing (2). The outer wall of the calibration rotor (4) matches the inner wall of the stator core. A movable notch calibration mechanism (5) is installed at the top end of the U-shaped housing (2). The execution end of the notch calibration mechanism (5) is used to insert into the notch of the stator iron core sheet and cooperate with the vibration of the vibration motor (3) to calibrate the notches of multiple stator iron core sheets.

2. The stator core calibration device for a conical rotor three-phase asynchronous motor according to claim 1, characterized in that: Two groups of moving units (6) are symmetrically arranged on the upper parts of the outer walls on both sides of the U-shaped housing (2). The notch calibration mechanism (5) includes a connecting rod (51) fixedly installed between the two groups of moving units (6) and a calibration rod (54) for inserting into the notch of the stator iron core sheet. A fixing block (52) for fixing a rotating motor (53) is installed on the connecting rod (51). The execution end of the rotating motor (53) is fixedly installed with a driving mechanism (55) for driving the calibration rod (54) to insert into the notch of the stator iron core sheet.

3. A stator core calibration device for a conical rotor three-phase asynchronous motor according to claim 2, characterized in that: Two transverse through grooves (21) are symmetrically arranged on the upper parts of the outer walls on both sides of the U-shaped housing (2). The moving unit (6) includes a mounting plate (61) slidably connected to the top end of the outer wall of the U-shaped housing (2) and two mounting brackets (62) symmetrically and fixedly arranged on the lower parts of the outer walls on both sides of the mounting plate (61). A moving wheel (63) whose bottom end fits against the bottom end of the inner wall of the transverse through groove (21) is rotatably arranged between the two mounting brackets (62). A moving motor (64) for driving the moving wheel (63) to rotate is installed on the outer wall of the mounting bracket (62) far from the fixing block (52). The connecting rod (51) is fixedly installed between the two mounting plates (61).

4. A stator core calibration device for a conical rotor three-phase asynchronous motor according to claim 3, characterized in that: The driving mechanism (55) includes a box body (551) whose rear outer wall is fixedly connected to the execution end of the rotating motor (53), and two symmetrical holes (552) for the calibration rod (54) to pass through are provided at the top and bottom ends of the box body (551). Two groups of driving units are symmetrically provided in the box body (551), and the driving units include two driving wheels (553) symmetrically provided in the upper and lower parts. The driving wheels (553) are connected to the driven gear (554) provided on the rear side of the box body (551) through a connecting shaft. The connecting shaft is provided through the box body (551). The two driving units in the same group are connected to the driven gear (554) provided on the rear side of the box body (551). A driving gear (555) is meshed between the driven gears (554), and two special-shaped brackets (556) are symmetrically installed on the rear side walls of the box body (551) located on both sides of the rotating motor (53). A driving motor (557) for driving the corresponding driving gear (555) to rotate is installed on the rear side walls of the special-shaped brackets (556). The driving gear (555) is arranged between the box body (551) and the special-shaped brackets (556). The calibration rod (54) passes between the two groups of driving units, and the outer wall of the calibration rod (54) is in contact with the outer wall of the driving wheel (553).

5. A stator core calibration device for a conical rotor three-phase asynchronous motor according to claim 4, characterized in that: A screw rod (56) is rotatably connected between the two mounting plates (61) located above the connecting rod (51), wherein a servo motor (561) for driving the screw rod (56) to rotate is mounted on one of the mounting plates (61), and the fixed block (52) is a screw seat, which is threadedly connected to the screw rod (56), and a U-shaped opening is provided at the bottom end of the screw seat, and the inner wall of the U-shaped opening is in contact with and slidably connected to the outer wall of the connecting rod (51).

6. A stator core calibration device for a conical rotor three-phase asynchronous motor according to claim 5, characterized in that: Two limiting grooves (22) are symmetrically provided at the bottom end of the inner wall of the U-shaped shell (2) on the left and right sides of the through hole. The limiting grooves (22) are used for inserting the bottom end of the calibration rod (54). The transverse length of the limiting grooves (22) is greater than the radius of the stator core.

7. The usage method implemented by a stator core calibration device for a conical rotor three-phase asynchronous motor according to claim 6, characterized in that: The steps include: S1: Sleeve the stator core onto the calibration rotor (4); S2: starting the moving unit (6), the moving unit (6) drives the notch calibration mechanism (5) to move toward the positioning rod (31); S3: starting the rotating motor (53), and adjusting the tilt angle of the calibration rod (54) to correspond to the tilt angle of the inner wall of the stator core; S4: starting the servo motor (561), which drives the fixed block (52) through the screw rod (56) to align the bottom end of the calibration rod (54) with the notch at the top end of the stator core above one of the limit slots (22); S5: starting the driving mechanism (55) to drive the calibration rod (54) to be inserted into the slot of the stator core until the bottom end of the calibration rod (54) is inserted into the limiting slot (22); S6: Start the vibration motor (3), which drives the stator core to vibrate through the positioning rod (31) and the calibration rotor (4) in turn, and cooperates with the calibration rod (54) to limit the stator core slot, thereby completing the calibration of the stator core.

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