Structure and production process of a scattered stator automatic vibration machine

Abstract

The present invention discloses a structure and production process of a loose stator automatic vibration machine, which includes a base. A transmission component, a guide component and a verticality correction component are provided on the top of the base. The transmission component includes an outer shell. A vertical ball screw is rotatably provided in the outer shell. A servo motor connected to the ball screw is provided at the end of the outer shell. A slider on the ball screw is connected to two lifting plates arranged laterally opposite to each other through a mounting portion. A groove for the mounting portion to move up and down is opened on the outer shell. The verticality correction component includes an impact seat. An impact correction portion that cooperates with the bottom surface of the stator core is provided around the top surface of the impact seat. The guide component includes a vertical guide core shaft that cooperates with the inner hole of the stator core. The guide core shaft is perpendicular to the top surface of the impact correction portion. A vertical guide plate that cooperates with the side surface of the stator core is provided on one side of the guide core shaft. The present invention has the advantages of high precision, high production efficiency and simple operation.

Description

Technical Field

[0001] The invention belongs to the technical field of production of loose-piece motors for refrigeration, and in particular relates to a structure and production process of a loose-piece stator automatic vibration machine. Background Art

[0002] In the fiercely competitive refrigerator compressor motor market, motor stators on the market are all manufactured using stacked riveted or welded silicon steel sheets. These processes often result in increased iron loss and reduced efficiency, increasing manufacturers' manufacturing costs while also reducing motor performance and quality, leading to wasted household electricity. In the current trend of energy conservation and emission reduction, reducing electricity waste, improving motor efficiency, and lowering manufacturing costs have become top priorities for motor manufacturers.

[0003] The loose-piece motor process eliminates welding and riveting processes. There are no welds between the stamped sheets, reducing eddy current losses and effectively lowering the motor's temperature rise. The efficiency of a single motor is 2-4% higher than that of a traditional welded-piece motor. The elimination of welding also reduces equipment and personnel investment. The stator segments of a loose-piece motor are positioned and connected by insulating sheets and copper or aluminum wire turns embedded in the stator slots. When subjected to force, the segments can move relative to each other within a certain range, including movement in the alignment direction. These characteristics place higher demands on the precision of the motor's inner bore's verticality and flatness.

[0004] A Chinese invention patent (CN201922089089.4) discloses a vertical shaping tool for a block-type motor stator, comprising a lower die base and an upper die base, the upper end face of the lower die base being connected to a lower die pad and a lower die in order from bottom to top, the lower end face of the upper die base being connected to an upper die, the lower die being provided with a shaping hole perpendicular to the upper end face of the lower die base and being through, the shape of the shaping hole being adapted to the shape surrounded by the side faces of the block-type motor stator, a top block being provided at the inner bottom end of the shaping hole, and an ejection mechanism being provided on the lower die pad for ejecting the shaped block-type motor stator upward from the shaping hole. The tooling is used by setting a mold in conjunction with hydraulic equipment, and has a complex structure and is inconvenient to use. It is easy to damage the internal structure of the motor due to excessive pressure.

[0005] A Chinese utility model patent (CN202020223391.4) discloses a stator verticality inspection tool, including a gauge base, a gauge core shaft, and a gauge bracket. The gauge base is provided with a boss in the middle, with a through hole in the middle of the boss. Several gauge brackets are arranged around the boss on the outer extension of the gauge base, and the height of the gauge brackets is greater than the height of the boss. The gauge core shaft includes a middle section, an upper section, and a lower section. The upper section of the core shaft is a handle for easy finger gripping. The diameter of the middle section of the core shaft is equal to the inner diameter of a standard motor stator. The lower end of the core shaft can be inserted into the through hole in the middle of the boss of the gauge base. When in use, the stator is first positioned on the base, and then the core shaft is inserted to facilitate the determination of the accuracy of the stator's verticality and simulate the determination of the clearance between the stator inner hole and the rotor.

[0006] A Chinese utility model patent (CN201220729705.3) discloses a test fixture for inspecting the verticality of the inner hole of a stator, which includes a base and a core shaft. The base is surrounded by a plurality of equal-height columns integrally formed with the base. The center of the base is provided with a circular hole for mounting the core shaft, and the core shaft is fixedly connected to the circular hole of the base.

[0007] The core difficulty of the scattered-piece stator is the vertical offset problem of the scattered-piece motor stator. The traditional mold pressing method is inefficient and difficult to guarantee accuracy. How to ensure the accuracy and stability of the scattered-piece motor and realize the batch production and automated precision adjustment of the scattered-piece motor is a problem that needs to be solved to promote the application of the scattered-piece motor process and realize the upgrading of refrigeration motor technology. Summary of the Invention

[0008] The purpose of the present invention is to provide a structure and production process of a stator automatic vibration machine for loose pieces in order to solve the problems existing in the prior art. The solution has the advantages of high precision, high production efficiency and simple operation.

[0009] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a structure of a stator automatic vibrator for scattered pieces, comprising a base, a transmission component, a guide component and a verticality correction component are arranged on the top of the base, the transmission component comprises an outer shell, a vertical ball screw is rotatably arranged in the outer shell, a servo motor connected to the ball screw is arranged at the end of the outer shell, the slider on the ball screw is connected to two lifting plates arranged laterally opposite to each other through a mounting portion, a groove is opened on the outer shell for the mounting portion to move up and down, the verticality correction component comprises an impact seat, and the top surface of the impact seat is provided with An impact correction portion that cooperates with the bottom surface of the stator core, the guide component includes a vertical guide core shaft that cooperates with the inner hole of the stator core, the guide core shaft is perpendicular to the top surface of the impact correction portion and is arranged in the middle of the top surface of the impact seat, the guide core shaft is located in the middle position of the two lifting plates, and a vertical guide plate that cooperates with the side surface of the stator core is provided on one side of the guide core shaft. A first position sensor is provided at the impact seat, and a second position sensor corresponding to the top position of the guide core shaft is provided on the outer shell. The servo motor, the first position sensor, and the second position sensor are all electrically connected to the controller.

[0010] In the above scheme, the base fixes the components to ensure the precision benchmark between the components, the bottom surface of the outer shell is connected to the top surface of the base, and the inside of the outer shell is rotatably connected to the ball screw through a bearing. A servo motor is provided at the end of the outer shell to transmit the ball screw, and when the ball screw rotates, it drives the slider to move, and the slider drives the lifting plate to move up and down through the mounting part. The lifting plates are relatively arranged on both sides of the guide core shaft to lift the motor stator, and a groove is provided to limit the axial position and height of the mounting part to prevent rotation, limit the range of movement, facilitate up and down movement, and improve efficiency. Impact correction parts are provided around the top surface of the impact seat to match the shape of the stator core, avoid the position of the coil, and impact and support the bottom surface of the stator core that falls vertically through the guide core shaft. The guide core shaft is perpendicular to the top surface of the impact correction part. The motor stator will vibrate slightly and for a short time during impact and displace, thereby correcting the verticality of the stator inner hole and the end face. and shaping, the guide core shaft is arranged in the middle of the top surface of the impact seat, that is, in the middle of the impact correction part, to position the stator core, and cooperate with the impact correction part to ensure the impact of the stator core, and a guide plate is arranged to cooperate with the guide core shaft to guide the stator core to prevent the circumferential rotation of the motor stator and the relative position of the impact correction part from offset during the descent process. The guide plate is arranged in a direction perpendicular to the two lifting plates, and a first position sensor is arranged to sense whether the motor stator is at the bottom of the guide core shaft. When the motor stator is at the bottom after the impact, the first position sensor transmits a signal to the controller, and the controller controls the servo motor to rotate to drive the lifting plate and then drive the motor stator to rise. After the motor stator reaches the top, the second position sensor transmits the position information to the controller, and the servo motor stops rotating. After the motor stator is removed, the controller controls the servo motor to reverse and reset the lifting plate, thereby controlling the movement of the lifting plate according to the position of the motor stator, which is convenient for manual operation. When the lifting plate is at the bottom, the height of the top surface of the lifting plate is lower than the height of the top surface of the impact correction part to ensure that it does not contact the motor stator to avoid interference. When the first position sensor senses the position of the motor stator, the controller can delay 0.5s-2s before controlling the servo motor to rotate to ensure the vibration effect of the motor stator. The gap between the guide core shaft and the inner hole of the stator is 0.005-0.01mm. By setting different guide core shaft heights, the motor stator can obtain a variety of gravitational potential energies and perform impacts of various intensities. The guide core shaft height is preferably in the range of 600-800mm. The diameter difference between the bottom of the guide core shaft and the top of the guide core shaft is in the range of 0.10-0.13mm, and the diameter of the bottom of the guide core shaft is 0.03-0.05mm smaller than the stator aperture.

[0011] The transmission components consist of a high-precision ball screw, linear guide rails, and a high-precision servo motor, which complete the precise positioning of the product and can precisely control the vibration force. The linear guide rails include a guiding mandrel and a guiding plate. The perpendicularity precision correction components and guiding components are designed with targeted profiling according to the shape characteristics of different motor stator products, and have the functions of precise guiding and correcting the perpendicularity of the stator. The clearance between it and the motor stator product is only 0.005 - 0.01 mm, and it is composed of a mandrel with multi-step layer-by-layer profiling guidance and a precision perpendicularity impact seat.

[0012] During the production process, the operator can directly start production after setting the corresponding parameters on the controller of the equipment according to the product model. First, the operator places the loose stator into the equipment. Due to the action of its own gravity, the loose motor stator starts to accelerate downward and directly falls onto the precision perpendicularity impact seat at the bottom along with the mandrel with layer-by-layer profiling guidance and the guide. Under the impact of the precision base, mandrel, and the product itself, the perpendicularity is corrected. Finally, the precision transmission components keep the corrected loose stator in a stable state and accurately and quickly transfer it to the next process.

[0013] The loose stator automatic vibrator can efficiently and stably complete the perpendicularity correction work of the loose motors in large quantities. It can effectively reduce the perpendicularity deviation of the motor stator, improve production efficiency, and reduce production manufacturing costs. And it can directly select and match the corresponding profiling mandrel and base according to different products to start normal production, directly solving the problem of full product coverage of a single device, and the replacement operation is simple and fast. The loose motors produced by this equipment have low iron loss, high efficiency, and low cost, which are significantly improved compared with the products of the original process, and have a broad market prospect.

[0014] Furthermore, the installation part includes two connecting parts one. One end of the connecting part one is connected to the slider, and the other end of the connecting part one is connected to the lifting plate. On the opposite sides of the two lifting plates, there are arc-shaped notch openings located outside the motor coil.

[0015] The lifting plate can be fixedly connected to one end of the connecting part one through bolts. The lifting plate is preferably made of a hard plastic plate to avoid damaging the motor stator. The arc-shaped notch openings are set to avoid the motor coil, increase the contact area with the bottom surface of the stator core, and improve the stability of movement. The connecting part one can be set in a U-shape for convenient connection.

[0016] Furthermore, there are two connecting parts two arranged on the slider, and an installation plate is connected between the two connecting parts two. One end of the connecting part one is connected to the slider through the installation plate.

[0017] The second connection is connected to the mounting plate via bolts. A slot can be provided in the middle of the mounting plate to reduce weight. The left and right sides of the mounting plate are connected to the first connection, either by bolts or welding, to improve the stability of the movement of the first connection. A reinforcing rib is provided between the first connection and the mounting plate to improve structural stability. The second connection can be L-shaped for easier connection.

[0018] Furthermore, the impact seat is detachably arranged on the top surface of the base by bolts, the impact correction part includes a block structure with a circular arc concave surface, and the lifting plate is arranged at a position between the two impact correction parts.

[0019] The impact seat and guide core rod are detachable structures. Guide core shafts and impact seats of various sizes can be replaced to adapt to the vibration processing of motor stators of various specifications. The arc concave surface of the block structure avoids the stator coil to support the stator core. The top surface of the block structure is a plane and is matched with the bottom surface of the stator core for impact. The lifting plate is arranged between the two impact correction parts to support the bottom of the stator core, thereby increasing the support area and improving stability.

[0020] Furthermore, the guide core shaft comprises a stepped shaft structure with a diameter that increases layer by layer, and each layer of the stepped shaft structure is connected and transitioned by a conical surface or an arc.

[0021] A stepped shaft structure guides the inner ring of the motor stator, facilitating positioning of the stator inner hole. Cylindricity correction is performed in layers, and tapered or curved surfaces are provided for easier transition. Traditional die stamping can easily damage the inner hole, which is counterproductive.

[0022] Furthermore, the guide plate includes a fixed plate, and at least two vertical limiting protrusions that cooperate with the side surfaces of the stator core are provided on the side surfaces of the fixed plate.

[0023] The fixing plate fixes the limiting protrusion, and the two limiting protrusions limit the side of the stator core, so that the motor stator remains vertically falling during the descent process and cannot rotate, avoiding relative deviation from the position of the impact correction part and providing precise guidance.

[0024] Furthermore, the controller includes a control cabinet, and the bottom of the control cabinet is arranged on one side of the base through a support rod.

[0025] The control cabinet is set on one side of the base through a support rod, which is convenient for people to observe the operating status and use of the machine. Stop, start and reset operations can be performed through the control cabinet.

[0026] A production process, using the above-mentioned scattered stator automatic vibration machine structure, includes the following steps:

[0027] S1: Fit the side of the stator core of the loose-piece motor with the guide plate, insert the inner hole of the stator into the top of the guide core shaft, and let go to allow the motor stator to fall freely;

[0028] S2: The motor stator is guided by the guide core shaft and the guide plate to vertically impact and vibrate the impact seat, thereby correcting the verticality of the stator core end face and the stator inner hole;

[0029] S3: After the second position sensor senses that the motor stator is in place, it controls the servo motor to rotate and drive the lifting plate to rise. The lifting plate contacts the bottom surface of the stator core and drives the motor stator to rise to the top of the guide core shaft;

[0030] S4: The first sensor senses the position of the motor stator, controls the servo motor to stop rotating, and manually removes the motor stator. After the first sensor senses that there is no obstacle, it controls the servo motor to rotate in the opposite direction to drive the lifting plate to descend and reset.

[0031] In the above scheme, in S1, the motor stator is clamped, and the loose motor stator is guided by the guide plate and the guide core shaft so that the motor stator falls freely along the guide core shaft; in S2, the motor stator is vertically impacted and vibrated with the impact seat by the guide core shaft and the guide plate, the verticality of the inner hole and the end face of the motor stator is corrected, and the structure of the loose motor stator is kept in a stable state by the impact force; in S3, when the motor stator is impacted and vibrated, it reaches the position of the second position sensor. The controller can delay 0.5s-2s before controlling the servo motor to rotate to ensure the vibration effect of the motor stator. The controller controls the servo motor to rotate, and the lifting plate drives the stator core to rise to the top of the guide core shaft, so that the motor stator remains in a stable state and is convenient for personnel to remove; in S4, when the first sensor senses that the motor stator has risen to the position, the controller stops the servo motor, and after the person takes away the motor stator, the servo motor drives the lifting plate to reset. The whole process is simple to operate and highly efficient. It uses the deadweight of the motor stator for correction, which has high precision and little damage to the motor stator structure.

[0032] Furthermore, the method further comprises the steps of:

[0033] S5: After the motor stator is removed, it is tested by the stator verticality inspection tool. If the verticality is qualified, it will be circulated normally. If the verticality is unqualified, the motor stator will repeat steps S1-S4;

[0034] S6: Use a motor air gap simulation gauge to detect the air gap of the motor stator. The motor air gap simulation gauge includes a positioning base and a gauge core shaft rotatably connected to the middle of the top surface of the positioning base. First, place the motor stator on the positioning base, then insert the gauge core shaft from the inner hole of the stator, rotate the gauge core shaft, and judge whether the motor stator is qualified based on whether the rotation is smooth. If it is qualified, it will flow normally. If the motor stator is unqualified, repeat steps S1-S5.

[0035] In S5, the accuracy of the motor stator is tested by a verticality inspection fixture to facilitate the control of the size qualification of the motor stator. Unqualified motor stators can be repeated S1-S4 for secondary correction. Motor stators that are still unqualified after multiple vibrations can be reworked. In S6, the air gap condition of the motor stator is verified using a motor air gap simulation inspection fixture. The motor stator is positioned on the base and the inspection fixture core shaft is used to simulate the motor air gap condition during assembly. The stator is judged to be qualified by rotating the inspection fixture core shaft to see whether it is smooth and whether it interferes with the stator inner hole. Unqualified motor stators are corrected by repeating S1-S5. Motor stators that are unqualified after multiple corrections can be reworked. The quality of the air gap is directly related to the verticality, inner hole cylindricity, and end face flatness dimensions of the motor stator corrected by the structure of the loose stator automatic vibration machine. Because the normal assembly of the motor stator and rotor is usually irreversible, disassembly will cause damage to the motor, so a motor air gap simulation inspection fixture is used to improve the success rate of one-time assembly. The unqualified motor stators in S5 and S6 can also be corrected by setting different guide core shaft heights. S5 and S6 can be carried out by random inspection of the motor stators.

[0036] Furthermore, in step S1, the guide core shaft includes a stepped shaft structure with a diameter that increases layer by layer, and the motor stator is corrected for the accuracy of the stator inner hole through the stepped shaft structure during the falling process.

[0037] The guide core shaft includes a stepped shaft structure with a diameter that increases layer by layer. When falling, the accuracy of the stator inner hole is corrected in layers, which improves the correction effect and accuracy and facilitates the installation of the motor stator.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The motor stator's own weight is used as the driving force, and the stator is guided by the guide core shaft and guide plate, so that the stator uses its own gravitational potential energy to freely fall onto the impact seat throughout the entire process for impact and vibration correction. The impact correction part and the guide core shaft are both set on the top surface of the impact seat with a common reference, so that the verticality between the two is guaranteed. The guide core shaft guides the motor stator to ensure that the motor stator is subjected to impact force in the vertical direction, thereby improving the accuracy of correction. The invention has a simple structure and high precision.

[0040] 2. Transmission components and verticality correction components are set up, and the motor stator automatically drops and impacts for correction throughout the process. The guide components cooperate with sensors and controllers to automatically lift and reset the motor stator to avoid friction and collision between the stator inner hole and the guide core shaft, ensuring accuracy. Only manual removal of the motor stator is required, which has a high degree of automation, high processing efficiency and simple operation.

[0041] 3. By replacing impact seats of different specifications, it can be applied to various types of loose-piece motors, and no stamping equipment is required. The equipment has strong versatility and low cost, and avoids structural damage to the motor caused by the pressure of external stamping equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic diagram of the working state of a loose stator automatic vibration machine structure according to embodiment 1 of the present invention;

[0043] Figure 2 A top view of a working state of a loose stator automatic vibration machine structure according to embodiment 1 of the present invention;

[0044] Figure 3 A top view of a structure of a stator automatic vibration machine with scattered pieces according to embodiment 1 of the present invention;

[0045] Figure 4 Schematic diagram of the structure of the guide mandrel in Example 2 of the present invention;

[0046] In the figure: 1. Base; 2. Outer shell; 3. Ball screw; 4. Servo motor; 5. Connection part 1; 6. Lifting plate; 7. Impact seat; 8. Impact correction part; 9. Guide core shaft; 10. Fixing plate; 11. First position sensor; 12. Second position sensor; 13. Arc-shaped notch; 14. Connection part 2; 15. Mounting plate; 16. Limiting protrusion; 17. Stator core. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In the description of the present invention, it should be noted that the terms front, back, left, right, etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships in which the invented product is usually placed when used. They are only for the convenience of describing the present invention or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed or operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0048] Example 1

[0049] like Figure 1-3 As shown, a structure of a stator automatic vibration machine for scattered pieces includes a base 1, a transmission component, a guide component and a verticality correction component are provided on the top of the base 1, the transmission component includes an outer shell 2, a vertical ball screw 3 is rotatably provided in the outer shell 2, a servo motor 4 connected to the ball screw 3 is provided at the end of the outer shell 2, the slider on the ball screw 3 is connected to two lifting plates 6 arranged laterally opposite to each other through a mounting portion, a slot is opened on the outer shell 2 for the mounting portion to move up and down, the verticality correction component includes an impact seat 7, and the top surface of the impact seat 7 is provided with impact correction components that cooperate with the bottom surface of the stator core 17. The positive part 8, the guide component includes a vertical guide core shaft 9 that cooperates with the inner hole of the stator core 17, the guide core shaft 9 is perpendicular to the top surface of the impact correction part 8 and is arranged in the middle of the top surface of the impact seat 7, the guide core shaft 9 is located in the middle position of the two lifting plates 6, and a vertical guide plate that cooperates with the side surface of the stator core 17 is provided on one side of the guide core shaft 9, a first position sensor 11 is provided at the impact seat 7, and a second position sensor 12 corresponding to the top position of the guide core shaft 9 is provided on the outer shell 2, and the servo motor 4, the first position sensor 11, and the second position sensor 12 are all electrically connected to the controller.

[0050] In the above scheme, the base 1 fixes the components to ensure the accuracy benchmark between the components. The bottom surface of the outer shell 2 is connected to the top surface of the base 1. The inside of the outer shell 2 is rotatably connected to the ball screw 3 through a bearing. A servo motor 4 is provided at the end of the outer shell 2 to transmit the ball screw 3. When the ball screw 3 rotates, it drives the slider to move, and the slider drives the lifting plate 6 to move up and down through the mounting part. A groove is provided to limit the axial position and height of the mounting part to prevent rotation, limit the moving range, facilitate up and down movement, and improve efficiency. An impact correction part 8 is provided around the top surface of the impact seat 7 to match the shape of the stator core 17, avoid the position of the coil, and impact and support the bottom surface of the stator core 17 that falls vertically through the guide core shaft 9. The guide core shaft 9 is perpendicular to the top surface of the impact correction part 8. The motor stator will vibrate slightly and for a short time during impact and displace, thereby correcting and shaping the verticality of the stator inner hole and the end face. The guide core shaft 9 is provided on the top of the impact seat 7 In the middle of the surface, that is, the middle of the impact correction part 8, the stator core 17 is positioned, and the impact correction part 8 is cooperated to ensure the impact of the stator core 17. A guide plate is set to cooperate with the guide core shaft 9 to guide the stator core 17 to prevent the circumferential rotation of the motor stator and the relative position of the impact correction part 8 from being offset during the descent process. The guide plate is set in a direction perpendicular to the two lifting plates 6. A first position sensor 11 is set to sense whether the motor stator is at the bottom of the guide core shaft 9. When the motor stator is at the bottom after the impact, the first position sensor 11 transmits a signal to the controller, and the controller controls the servo motor 4 to rotate to drive the lifting plate 6 and then drive the motor stator to rise. After the motor stator reaches the top, the second position sensor 12 transmits the position information to the controller, and the servo motor 4 stops rotating. After the motor stator is removed, the controller controls the servo motor 4 to reverse and the lifting plate 6 is reset, thereby controlling the movement of the lifting plate 6 according to the position of the motor stator, which is convenient for manual operation. When the lifting plate 6 is at the bottom, the height of the top surface of the lifting plate 6 is lower than the height of the top surface of the impact correction part 8 to ensure that it does not contact the motor stator to avoid interference. When the first position sensor 11 senses the position of the motor stator, the controller can delay 0.5s-2s before controlling the servo motor 4 to rotate to ensure the vibration effect of the motor stator. The gap between the guide core shaft 9 and the inner hole of the stator is 0.005-0.01mm. By setting different heights of the guide core shaft 9, the motor stator can obtain a variety of gravitational potential energies and perform impacts of various intensities. The height of the guide core shaft 9 is preferably in the range of 600-800mm. Two lifting plates 6 are arranged on both sides of the guide core shaft 9. The first position sensor 11 and the second position sensor 12 can sense and locate the positions of the motor stator, the lifting plate 6, the connecting part 1 5, the connecting part 2 14, and the mounting plate 15. The sensors can be infrared sensors. The second position sensor 12 is connected to the outer shell 2 through a bracket.

[0051] The transmission components consist of a high-precision ball screw, a linear guide rail, and a high-precision servo motor 4, which complete the precise positioning of the product and can precisely control the vibration force. The linear guide rail includes a guiding mandrel 9 and a guiding plate. The perpendicularity precision correction component and the guiding component are designed for targeted profiling according to the shape characteristics of different motor stator products, and have the functions of precise guiding and correcting the perpendicularity of the stator. The clearance between it and the motor stator product is only 0.005 - 0.01 mm, and it is composed of a mandrel guided by multi-step layer-by-layer profiling and a precision perpendicularity impact seat 7.

[0052] During the production process, after the operator sets the corresponding parameters on the controller of the equipment according to the product model, production can start directly. First, the operator places the loose stator on the equipment. Due to the action of its own gravity, the loose motor stator begins to accelerate downward and directly falls to the precision perpendicularity impact seat 7 at the bottom along with the mandrel guided by layer-by-layer profiling and the guiding. Under the impact of the precision base 1, the mandrel, and the product itself, the perpendicularity is corrected. Finally, the precision transmission components keep the corrected loose stator in a stable state and accurately and quickly transfer it to the next process.

[0053] The loose stator automatic vibrator can efficiently and stably complete the perpendicularity correction work of the loose motor in large quantities. It can effectively reduce the perpendicularity deviation of the motor stator, improve production efficiency, and reduce production manufacturing costs. And it can directly select and match the corresponding profiling mandrel and base 1 according to different products and then start normal production, directly solving the problem of full product coverage of a single device, and the replacement operation is simple and fast. The loose motor produced by this equipment has low iron loss, high efficiency, and low cost, which is significantly improved compared with the products of the original process and has broad market prospects.

[0054] Furthermore, the installation part includes two U-shaped connecting parts one 5. One end of the connecting part one 5 is connected to the slider, and the other end of the connecting part one 5 is connected to the lifting plate 6. On the opposite sides of the two lifting plates 6, arc-shaped notch openings 13 located outside the motor coil are provided.

[0055] The lifting plate 6 can be fixedly connected to one end of the connecting part one 5 through bolts. The lifting plate 6 is preferably made of a hard plastic plate, and other non-metallic materials with relatively low hardness can also be used to avoid damaging the motor stator. The arc-shaped notch openings 13 are provided to avoid the motor coil, increase the contact area with the bottom surface of the stator core 17, and improve the stability of movement. One end of the connecting part one 5 can be directly connected to the slider or connected through a connecting structure.

[0056] Furthermore, two connecting parts two 14 are provided on the slider, and an installation plate 15 is connected between the two connecting parts two 14. One end of the connecting part one 5 is connected to the slider through the installation plate 15.

[0057] The second connection part 14 and the mounting plate 15 are connected by bolts. A groove can be opened in the middle of the mounting plate 15 to reduce the weight. The left and right sides of the mounting plate 15 are respectively connected to the connection part 1 5, which can be connected by bolts or welding to improve the stability of the movement of the connection part 1 5. A reinforcing rib is set between the connection part 1 5 and the mounting plate 15 to improve the structural stability.

[0058] Furthermore, the impact seat 7 is detachably arranged on the top surface of the base 1 by bolts, the impact correction part 8 includes a block structure with a circular arc concave surface, and the lifting plate 6 is arranged between the two impact correction parts 8.

[0059] The impact seat 7 and the guide core rod are detachable structures. The guide core shafts 9 and the impact seat 7 of various sizes can be replaced to adapt to the vibration processing of motor stators of various specifications. The arc concave surface of the block structure avoids the stator coil to support the stator core 17. The top surface of the block structure is a plane and is impact-matched with the bottom surface of the stator core 17. The lifting plate 6 is arranged between the two impact correction parts 8 to support the bottom of the stator core 17, thereby increasing the support area and improving stability.

[0060] Furthermore, the guide plate includes a fixed plate 10 , and at least two vertical limiting protrusions 16 are provided on the side surface of the fixed plate 10 to cooperate with the side surface of the stator core 17 .

[0061] The fixing plate 10 fixes the limiting protrusions 16, and the two limiting protrusions 16 limit the sides of the stator core 17, so that the motor stator remains vertically falling and cannot rotate during the descent process, avoiding relative deviation from the position of the impact correction part 8 and providing precise guidance.

[0062] Furthermore, the controller includes a control cabinet, and the bottom of the control cabinet is arranged on one side of the base 1 through a support rod.

[0063] The control cabinet is arranged on one side of the base 1 through the support rod, which is convenient for people to observe the operating status and use of the machine. The stop, start and reset operations can be performed through the control cabinet.

[0064] A production process, using the above-mentioned scattered stator automatic vibration machine structure, includes the following steps:

[0065] S1: Fit the side of the stator core 17 of the scattered motor with the guide plate, insert the inner hole of the stator into the top of the guide core shaft 9, and let go to let the motor stator fall freely;

[0066] S2: The motor stator is vertically impacted and vibrated with the impact seat 7 under the guidance of the guide core shaft 9 and the guide plate, thereby correcting the verticality of the end face of the stator core 17 and the stator inner hole;

[0067] S3: After the second position sensor 12 senses that the motor stator is in place, it controls the servo motor 4 to rotate and drive the lifting plate 6 to rise. The lifting plate 6 contacts the bottom surface of the stator core 17 and drives the motor stator to rise to the top of the guide core shaft 9;

[0068] S4: The first sensor senses the position of the motor stator, controls the servo motor 4 to stop rotating, and manually removes the motor stator. After the first sensor senses that there is no obstacle, it controls the servo motor 4 to rotate in the opposite direction to drive the lifting plate 6 to descend and reset.

[0069] In the above scheme, in S1, the motor stator is clamped, and the loose motor stator is guided by the guide plate and the guide core shaft 9 so that the motor stator falls freely along the guide core shaft 9; in S2, the motor stator is vertically impacted and vibrated with the impact seat 7 by the guide core shaft 9 and the guide plate, the verticality of the inner hole and the end face of the motor stator is corrected, and the structure of the loose motor stator is kept in a stable state by the impact force; in S3, when the motor stator is impacted and vibrated, it reaches the position of the second position sensor 12, and the controller can delay 0.5s-2s before controlling the servo motor 4 to rotate to ensure the vibration effect of the motor stator. The controller controls the servo motor 4 to rotate, and the lifting plate 6 drives the stator core 17 to rise to the top of the guide core shaft 9, so that the motor stator remains in a stable state, which is convenient for personnel to take out; in S4, when the first sensor senses that the motor stator has risen to the position, the controller stops the servo motor 4, and after the person takes away the motor stator, the servo motor 4 drives the lifting plate 6 to reset. The whole process is simple to operate and highly efficient. It uses the deadweight of the motor stator for correction, which has high precision and little damage to the motor stator structure.

[0070] Furthermore, the steps include:

[0071] S5: After the motor stator is removed, it is tested by the stator verticality inspection tool. If the verticality is qualified, it will be circulated normally. If the verticality is unqualified, the motor stator will repeat steps S1-S4;

[0072] S6: Use a motor air gap simulation gauge to detect the air gap of the motor stator. The motor air gap simulation gauge includes a positioning base 1 and a gauge core shaft rotatably connected to the middle of the top surface of the positioning base 1. First, place the motor stator on the positioning base 1, then insert the gauge core shaft from the inner hole of the stator, rotate the gauge core shaft, and judge whether the motor stator is qualified based on whether the rotation is smooth. If it is qualified, it will flow normally. If the motor stator is unqualified, repeat steps S1-S5.

[0073] In S5, the accuracy of the motor stator is tested by a verticality inspection fixture to facilitate the control of the size qualification of the motor stator. Unqualified motor stators can be repeated S1-S4 for secondary correction. Motor stators that are still unqualified after multiple vibrations can be reworked; in S6, the air gap condition of the motor stator is verified using a motor air gap simulation inspection fixture. The motor stator is positioned on the base 1, and the motor air gap condition during assembly is simulated with the inspection fixture core shaft. The stator is judged to be qualified by rotating the inspection fixture core shaft to see whether it is smooth and whether it interferes with the inner hole of the stator. Unqualified motor stators are corrected by repeating S1-S5. Motor stators that are unqualified after multiple corrections can be reworked; the quality of the air gap is directly related to the verticality, inner hole cylindricity, and end face flatness dimensions of the motor stator corrected by the structure of the loose stator automatic vibration machine; because the normal assembly of the motor stator and rotor is usually irreversible, disassembly will cause damage to the motor, so a motor air gap simulation inspection fixture is used to improve the success rate of one-time assembly. The unqualified motor stators in S5 and S6 can also be corrected by setting different heights of the guide core shaft 9.

[0074] Before testing, the finished stator core 17 is fully vibrated using a vibrator. The vibration height, i.e., the guide mandrel 9, is adjusted to 500-650mm. The stator is then inspected using a stator verticality gauge. A rotary die, i.e., a motor air gap simulation gauge, is used for random inspection, with one unit inspected for every ten units. During production, the operator sets the corresponding parameters on the equipment based on the product model before directly beginning the vibration operation. After the operator places the loose stator into the equipment, the stator accelerates downward due to its own gravity and, following the contoured mandrel and guides, falls directly to the precision verticality impact seat 7 at the bottom. The impact of the precision impact seat 7, the mandrel, and the product itself corrects the inner bore verticality to within 0.05mm.

[0075] This invention offers the advantages of excellent calibration, strong stability, a high degree of automation, and simple operation and adjustment. It enables high-volume, highly reliable, and continuous production of stator cores 17 for discrete motors. The discrete stator automatic vibrator is a crucial piece of process assurance equipment for discrete motor production. With this in mind, our company has invested significant resources in technological breakthroughs. After nearly a year of effort, we have successfully developed a discrete motor stator core 17 process and have implemented this technology on a large scale, upgrading all of our motor products. By organically combining equipment automation with the production line, we have now formed a complete discrete motor production line.

[0076] Example 2

[0077] like Figure 4 As shown, the structure of a scattered stator automatic vibration machine of this embodiment is further optimized on the basis of embodiment 1:

[0078] Furthermore, the guide core shaft 9 comprises a stepped shaft structure with a diameter that increases layer by layer, and each layer of the stepped shaft structure is connected and transitioned by a conical surface or an arc.

[0079] A stepped shaft structure is set to guide the inner ring of the motor stator to facilitate the positioning of the inner hole of the motor stator, and the cylindrical size of the stator inner hole is corrected in layers. A conical surface or arc is set to facilitate the transition.

[0080] A production process is further optimized based on Example 1:

[0081] Furthermore, in step S1 , the guide core shaft 9 includes a stepped shaft structure with a diameter that increases layer by layer, and the motor stator is corrected for the accuracy of the stator inner hole through the stepped shaft structure during the falling process.

[0082] The guide core shaft 9 comprises a stepped shaft structure with a diameter that increases layer by layer. When falling, the accuracy of the stator inner hole is corrected in layers, thereby improving the correction effect and accuracy and facilitating the installation of the motor stator.

[0083] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A structure of a stator automatic vibration machine with scattered pieces, characterized in that: The invention comprises a base, a transmission component, a guide component and a verticality correction component are arranged on the top of the base, the transmission component comprises an outer shell, a vertical ball screw is rotatably arranged in the outer shell, a servo motor connected to the ball screw is arranged at the end of the outer shell, the slider on the ball screw is connected to two lifting plates arranged laterally opposite to each other through a mounting part, the mounting part comprises two connecting parts one, one end of the connecting part one is connected to the slider, and the other end of the connecting part one is connected to the lifting plate, the two lifting plates are provided with an arc-shaped notch located outside the motor coil on the opposite side, a slot body for the mounting part to move up and down is opened on the outer shell, the verticality correction component comprises an impact seat, and the top surface of the impact seat is provided with An impact correction portion that cooperates with the bottom surface of the stator core, the guide component includes a vertical guide core shaft that cooperates with the inner hole of the stator core, the guide core shaft includes a stepped shaft structure with a diameter that increases layer by layer, and each layer of the stepped shaft structure is connected and transitioned by a cone or arc. The guide core shaft is perpendicular to the top surface of the impact correction portion and is arranged in the middle of the top surface of the impact seat. The guide core shaft is located in the middle position of the two lifting plates. A vertical guide plate that cooperates with the side surface of the stator core is provided on one side of the guide core shaft. A first position sensor is provided at the impact seat, and a second position sensor corresponding to the top position of the guide core shaft is provided on the outer shell. The servo motor, the first position sensor, and the second position sensor are all electrically connected to the controller.

2. The structure of the automatic vibration machine for the scattered stator according to claim 1, characterized in that: The slider is provided with two connecting parts 2, a mounting plate is connected between the two connecting parts 2, and one end of the connecting part 1 is connected to the slider through the mounting plate.

3. The structure of the automatic vibration machine for the scattered stator according to claim 1, characterized in that: The impact seat is detachably arranged on the top surface of the base by means of bolts. The impact correction part comprises a block structure with an arc concave surface. The lifting plate is arranged at a position between the two impact correction parts.

4. The structure of the automatic vibration machine for the scattered stator according to claim 1, characterized in that: The guide plate includes a fixed plate, and at least two vertical limiting protrusions that cooperate with the side surfaces of the stator core are provided on the side surfaces of the fixed plate.

5. The structure of the automatic vibration machine for the scattered stator according to claim 1, characterized in that: The controller includes a control cabinet, and the bottom of the control cabinet is arranged on one side of the base through a support rod.

6. A production process, characterized in that: The method of using the automatic vibration machine structure of the scattered stator according to any one of claims 1 to 5 comprises the following steps: S1: Fit the side of the stator core of the loose-piece motor with the guide plate, insert the inner hole of the stator into the top of the guide core shaft, and let go to allow the motor stator to fall freely; S2: The motor stator is guided by the guide core shaft and the guide plate to vertically impact and vibrate the impact seat, thereby correcting the verticality of the stator core end face and the stator inner hole; S3: After the second position sensor senses that the motor stator is in place, it controls the servo motor to rotate and drive the lifting plate to rise. The lifting plate contacts the bottom surface of the stator core and drives the motor stator to rise to the top of the guide core shaft; S4: The first sensor senses the position of the motor stator, controls the servo motor to stop rotating, and manually removes the motor stator. After the first sensor senses that there is no obstacle, it controls the servo motor to rotate in the opposite direction to drive the lifting plate to descend and reset.

7. The production process according to claim 6, characterized in that: Also includes the steps: S5: After the motor stator is removed, it is tested by the stator verticality inspection tool. If the verticality is qualified, it will be circulated normally. If the verticality is unqualified, the motor stator will repeat steps S1-S4; S6: Use a motor air gap simulation gauge to detect the air gap of the motor stator. The motor air gap simulation gauge includes a positioning base and a gauge core shaft rotatably connected to the middle of the top surface of the positioning base. First, place the motor stator on the positioning base, then insert the gauge core shaft from the inner hole of the stator, rotate the gauge core shaft, and judge whether the motor stator is qualified based on whether the rotation is smooth. If it is qualified, it will flow normally. If the motor stator is unqualified, repeat steps S1-S5.

8. The production process according to claim 6, characterized in that: In step S1, the guide core shaft includes a stepped shaft structure with a diameter that increases layer by layer. During the falling process of the motor stator, the precision of the inner hole of the stator is corrected by the stepped shaft structure.

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