Amorphous stator for servo motor

Abstract

The utility model discloses an amorphous stator for a servo motor. The amorphous stator comprises an inner support ring and an iron core. Mounting grooves which are uniformly distributed are formed in the outer surface of the inner supporting ring, and flexible contact layers are arranged on the inner walls of the mounting grooves; the iron cores are arranged in the mounting grooves respectively, the ends, close to the center of the inner supporting ring, of the iron cores are matched with the flexible contact layer, and coils are wound between the middles of the iron cores stacked up and down in the same mounting groove; wherein the upper end of the inner supporting ring is provided with a cover plate, the lower side surface of the cover plate is provided with wave-shaped stainless steel elastic pressing sheets which are uniformly distributed, the upper ends of the interiors of the mounting grooves are slidably connected with insulating buffer plates, and the lower side surfaces of the insulating buffer plates are in contact with the upper side surfaces of the iron cores adjacent to the lower sides. Through the buffering of the elastic resin layer, the positioning of the guide structure, the pressing of the elastic pressing sheet and the stable structure, the stable installation of the iron cores and the stable contact between the iron cores are realized.

Description

Technical Field

[0001] This utility model relates to the field of servo motor technology, specifically to an amorphous stator for a servo motor. Background Technology

[0002] With the continuous acceleration of industrial automation, servo motors, as key actuators in industrial control systems, directly affect the operating accuracy, stability, and efficiency of the entire system. In many application fields, such as CNC machine tools, robots, and semiconductor manufacturing equipment, the performance requirements for servo motors are becoming increasingly stringent. They are expected to have higher power density and faster response speed, as well as achieve efficient and stable operation in a compact space. Due to their excellent properties such as high magnetic permeability and low iron loss, amorphous alloy materials have received widespread attention and application in the field of servo motor stator manufacturing. Using amorphous alloys in stator cores can effectively reduce motor energy consumption and improve motor efficiency, meeting the dual pursuit of energy saving and high performance in modern industry, and promoting the technological upgrading and sustainable development of related industries.

[0003] Currently, the common stator structure of servo motors mainly consists of an iron core and windings. The iron core is generally made of laminated silicon steel sheets. With the development of amorphous alloy technology, some stators have begun to use amorphous alloy iron cores to replace traditional silicon steel sheet iron cores. In terms of manufacturing process, amorphous alloy strips are first cut into suitable shapes and sizes, and then the iron core is formed by lamination. Then, coils are wound on the iron core. When the motor is connected to the power supply, the current passes through the coil to generate a magnetic field. According to the principle of electromagnetic induction, the magnetic field is conducted in the iron core, causing the motor rotor to be driven by electromagnetic force and rotate, realizing the conversion of electrical energy into mechanical energy. In some more advanced designs, optimized iron core structures and winding arrangements are adopted, such as distributed windings and skewed slot structures, to improve the performance and efficiency of the motor.

[0004] Existing technologies for iron core installation typically involve simply fixing the iron core to a bracket, lacking effective buffering and positioning measures. During motor operation, the iron core is prone to displacement due to vibration, leading to uneven magnetic field distribution and affecting the motor's output performance and stability. Long-term vibration may also loosen the connection between the iron core and the bracket, shortening the motor's lifespan. During iron core stacking, due to manufacturing process precision limitations, it is difficult to guarantee the flatness and dimensional consistency of the iron cores, resulting in uneven contact areas between the iron cores. Some areas have tight contact, while others have tiny gaps. During motor operation, vibration and electromagnetic forces exacerbate this contact instability. The slight relative displacement between the iron cores leads to changes in contact resistance, which in turn affects the continuity and stability of the magnetic circuit. When contact instability is severe, it may also cause local overheating, reducing motor efficiency and even damaging the iron core, affecting the normal lifespan and operational reliability of the motor. To address this, we propose an amorphous stator for servo motors. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide an amorphous stator for servo motors, which has stable core installation and stable contact between cores, and can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an amorphous stator for a servo motor, comprising an inner support ring and an iron core;

[0007] Inner support ring: Its outer surface is provided with evenly distributed mounting grooves, and the inner wall of each mounting groove is provided with a flexible contact layer;

[0008] Iron core: Each of them is set inside the mounting groove. The end of the iron core near the center of the inner support ring is set with a flexible contact layer. The middle of the iron cores stacked in the same mounting groove is wound with coils.

[0009] The inner support ring has a cover plate at its upper end, and the lower side of the cover plate has evenly distributed corrugated stainless steel elastic pressure plates. The upper end of the mounting groove is slidably connected to an insulating buffer plate. The lower side of the insulating buffer plate is in contact with the upper side of the adjacent iron core. The corrugated stainless steel elastic pressure plates are in contact with the upper side of the adjacent insulating buffer plate. Through the buffering of the elastic resin layer, the positioning of the guide structure, the pressing of the elastic pressure plates, and the stabilization of the structure, the stability of the iron core installation and the stability of the contact between the iron cores are achieved.

[0010] Furthermore, the flexible contact layer is an elastic resin layer, and a guide strip is provided in the middle of each mounting groove. The outer side of the guide strip and the inner wall of the mounting groove are both provided with an elastic resin layer, which can buffer the vibration generated by the iron core when the motor is running.

[0011] Furthermore, each end of the iron core near the center of the inner support ring is provided with a guide groove, and the guide groove is slidably connected to the elastic resin layer on the outer side of the radially adjacent guide strip. The outer side of the end of the iron core near the center of the inner support ring is slidably connected to the elastic resin layer on the inner wall of the radially adjacent mounting groove, making the position of the iron core in the mounting groove more stable.

[0012] Furthermore, the upper side of the inner support ring is provided with evenly distributed protrusions, and the lower side of the cover plate is provided with evenly distributed grooves. The grooves are all inserted into the protrusions adjacent to the lower side. The insertion structure of the protrusions and grooves provides initial positioning and installation convenience for the inner support ring and the cover plate.

[0013] Furthermore, both the upper side of the inner support ring and the upper side of the cover plate are provided with evenly distributed connecting holes. A rubber bolt is threaded between two adjacent connecting holes. The rubber bolt has a certain elasticity and can play a shock-absorbing role when connecting the inner support ring and the cover plate compared with ordinary metal bolts.

[0014] Furthermore, the lower end of the inner support ring is provided with a shell, and both the inner support ring and the iron core are located inside the shell. The upper end of the shell is threaded with a closing plate. The shell encloses the inner support ring and the iron core inside, providing reliable mechanical protection for the stator.

[0015] Furthermore, all the iron cores are amorphous alloy iron cores. The high permeability of amorphous alloy iron cores reduces the excitation current of the motor and lowers the excitation loss.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This servo motor uses an amorphous stator, which has the following advantages:

[0017] 1. Through the coordinated action of the elastic resin layer, guide strips and guide grooves, the vibration and displacement of the iron core are effectively buffered, the iron core is accurately positioned, the magnetic field of the motor is ensured to be uniform and stable, the failure caused by loose or displaced parts is reduced, the stability and reliability of motor operation are significantly improved, and the service life of the motor is extended.

[0018] 2. The polyimide insulating buffer plate not only provides good insulation performance, but also buffers vertical vibration; the corrugated stainless steel elastic pressure plate contacts the upper side of the insulating buffer plate, applying downward pressure to the insulating buffer plate and the iron core. This structural design ensures that the stacked iron cores are always in a tight fit during motor operation, preventing loosening between the iron cores, ensuring the integrity of the motor's magnetic circuit, and improving motor performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention in cross-section at the top.

[0021] Figure 3 This is a partial structural diagram of the inner support ring of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention in an explosion.

[0023] Figure 5 This is a structural schematic diagram of the present invention viewed from below during an explosion;

[0024] Figure 6 This is a top view of the internal support ring of this utility model.

[0025] Figure 7 This is an enlarged structural schematic diagram of point A of this utility model;

[0026] Figure 8 This is a partial structural diagram of the iron core of this utility model.

[0027] In the diagram: 1 Inner support ring, 2 Iron core, 3 Coil, 4 Mounting groove, 5 Guide strip, 6 Elastic resin layer, 7 Guide groove, 8 Insulating buffer plate, 9 Protrusion, 10 Cover plate, 11 Groove, 12 Connecting hole, 13 Rubber bolt, 14 Corrugated stainless steel elastic pressure plate, 15 Outer shell. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-8 This embodiment provides a technical solution: an amorphous stator for a servo motor, comprising an inner support ring 1 and an iron core 2;

[0030] Inner support ring 1: Its outer surface is provided with uniformly distributed mounting grooves 4, and the inner wall of the mounting grooves 4 is provided with a flexible contact layer;

[0031] Iron core 2: Each iron core 2 is disposed inside the mounting groove 4. All iron cores 2 are amorphous alloy iron cores. The end of each iron core 2 near the center of the inner support ring 1 is fitted with a flexible contact layer, which is an elastic resin layer 6. A guide strip 5 is provided in the middle of each mounting groove 4. The outer surface of the guide strip 5 and the inner wall of the mounting groove 4 are both provided with an elastic resin layer 6. A guide groove 7 is provided at the end of each iron core 2 near the center of the inner support ring 1. The guide groove 7 is slidably connected to the elastic resin layer 6 on the outer surface of the radially adjacent guide strip 5. The outer surface of the end of each iron core 2 near the center of the inner support ring 1 is slidably connected to the elastic resin layer 6 on the inner wall of the radially adjacent mounting groove 4. Coils 3 are wound between the middle sections of iron cores 2 stacked vertically within the same mounting slot 4. A housing 15 is located at the lower end of the inner support ring 1, with both the inner support ring 1 and the iron cores 2 situated inside the housing 15. A closing plate is threaded onto the upper end of the housing 15. When the servo motor is powered on, current flows into the coils 3 wound between the middle sections of the stacked iron cores 2 within the same mounting slot. According to the law of electromagnetic induction, the current flowing through the coils 3 generates a magnetic field. Because the iron cores 2 are made of amorphous alloy, which has high permeability, it effectively enhances the magnetic field strength. Under the influence of this magnetic field, the rotor inside the motor experiences... The electromagnetic force causes rotation, converting electrical energy into mechanical energy. The elastic resin layer 6 on the inner wall of the mounting groove 4 and the outer side of the guide strip 5, along with the sliding connection between the guide groove 7 at the end of the iron core 2 near the center of the inner support ring 1 and the elastic resin layer 6 on the outer side of the guide strip 5, and the sliding connection between the outer side of the iron core 2 at this end and the elastic resin layer 6 on the inner wall of the mounting groove 4, serve multiple functions. Firstly, the elastic resin layer 6 is flexible, buffering the vibration and displacement generated by the iron core 2 during motor operation, preventing damage between the iron core 2 and the inner support ring 1 due to rigid contact, and also reducing noise generation. Secondly, the guide... The cooperation between the guide bar 5 and the guide groove 7 enables the iron core 2 to be accurately positioned during installation and operation, ensuring the uniformity and stability of the motor's magnetic field, thereby improving the motor's operating efficiency and accuracy. The outer shell 15 set at the lower end of the inner support ring 1 encloses the inner support ring 1 and the iron core 2 inside, playing a protective role. It can prevent external dust, debris, etc. from entering the stator and affecting the motor's performance. At the same time, the closed plate with threaded connection at the upper end of the outer shell 15 further enhances the sealing performance, providing a relatively stable operating environment for the internal components of the motor, which is conducive to extending the service life of the motor and ensuring the accurate and stable installation of the iron core 2.

[0032] The inner support ring 1 has a cover plate 10 at its upper end. The lower side of the cover plate 10 has evenly distributed corrugated stainless steel elastic pressure plates 14. Insulating buffer plates 8 are slidably connected to the upper end of the mounting groove 4. The lower side of each insulating buffer plate 8 contacts the upper side of the adjacent iron core 2. The corrugated stainless steel elastic pressure plates 14 also contact the upper side of the adjacent insulating buffer plates 8. The upper side of the inner support ring 1 has evenly distributed protrusions 9. The lower side of the cover plate 10 has evenly distributed grooves 11, which are inserted into the adjacent protrusions 9. The upper side of both the inner support ring 1 and the upper side of the cover plate 10 have evenly distributed connecting holes 12. Rubber bolts 13 are threaded between two adjacent connecting holes 12. The insulating buffer plates 8, slidably connected to the upper end of the mounting groove 4, are polyimide insulating buffer plates that can buffer the vertical vibration of the iron core 2. The wavy stainless steel elastic pressure plate 14 on the lower side of the stator contacts the upper side of the insulating buffer plate 8, applying downward pressure to the insulating buffer plate 8 and the iron core 2. This structural design ensures that the stacked iron cores 2 are always in a tight fit during motor operation, preventing loosening between the iron cores 2, ensuring the integrity of the motor's magnetic circuit, and improving motor performance. The protrusion 9 on the upper side of the inner support ring 1 and the groove 11 on the lower side of the cover plate 10 are interlocked, and the connecting holes 12 on the upper sides of the inner support ring 1 and the cover plate 10 are threaded together by rubber bolts 13, so that the inner support ring 1, the iron core 2 and the cover plate 10 form a stable integral structure. This connection method can enhance the structural strength of the entire stator, resist the action of various external forces during motor operation, maintain the stability of the stator, ensure the normal operation of the motor, and ensure the tight fit between the stacked iron cores 2.

[0033] The working principle of the amorphous stator for a servo motor provided by this utility model is as follows: When the servo motor is powered on, the current flows into the coil 3, which is wound between the upper and lower stacked iron cores 2 located inside the same mounting slot. According to the law of electromagnetic induction, the current flowing in the coil 3 will generate a magnetic field. Since the iron core 2 is made of amorphous alloy material, it has the characteristic of high magnetic permeability, which can effectively enhance the magnetic field strength. Under the action of this magnetic field, the rotor inside the motor will be subjected to electromagnetic force, thereby generating rotation and realizing the conversion of electrical energy into mechanical energy. The elastic resin layer 6 is provided on the inner wall of the mounting slot 4 and the outer side of the guide strip 5, and the end of the iron core 2 near the center of the inner support ring 1 is opened. The sliding connection between the guide groove 7 and the elastic resin layer 6 on the outer side of the guide strip 5, and the sliding connection between the outer side of the iron core 2 and the elastic resin layer 6 on the inner wall of the mounting groove 4, serve multiple purposes. Firstly, the elastic resin layer 6 is flexible, which can buffer the vibration and displacement generated by the iron core 2 during motor operation, preventing damage between the iron core 2 and the inner support ring 1 due to rigid contact, and also reducing noise generation. Secondly, the cooperation between the guide strip 5 and the guide groove 7 allows the iron core 2 to be accurately positioned during installation and operation, ensuring the uniformity and stability of the motor's magnetic field, thereby improving the motor's operating efficiency and accuracy. The upper end of the mounting groove 4 is slidably connected... The insulating buffer plate 8, as a polyimide insulating buffer plate, can buffer the vertical vibration of the iron core 2. The corrugated stainless steel elastic pressure plate 14 provided on the lower side of the cover plate 10 contacts the upper side of the insulating buffer plate 8, applying downward pressure to the insulating buffer plate 8 and the iron core 2. This structural design ensures that the stacked iron cores 2 are always in a tight fit during motor operation, preventing loosening between the iron cores 2, ensuring the integrity of the motor's magnetic circuit, and improving motor performance. The protrusion 9 on the upper side of the inner support ring 1 interlocks with the groove 11 on the lower side of the cover plate 10, and the connecting hole 12 on the upper side of the inner support ring 1 and the cover plate 10 are connected by rubber bolts. The threaded connection 13 forms a stable integral structure with the inner support ring 1, the iron core 2, and the cover plate 10. This connection method enhances the structural strength of the entire stator, resists various external forces during motor operation, maintains the stability of the stator, and ensures the normal operation of the motor. The outer shell 15 at the lower end of the inner support ring 1 encloses the inner support ring 1 and the iron core 2, providing protection. It prevents external dust, debris, etc. from entering the stator and affecting the performance of the motor. At the same time, the closed plate with threaded connection at the upper end of the outer shell 15 further enhances the sealing performance, providing a relatively stable operating environment for the internal components of the motor, which is conducive to extending the service life of the motor.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An amorphous stator for a servo motor, characterized in that: It includes an inner support ring (1) and an iron core (2); Inner support ring (1): Its outer surface is provided with uniformly distributed mounting grooves (4), and the inner wall of the mounting grooves (4) is provided with a flexible contact layer; Iron core (2): It is respectively set inside the mounting groove (4). The end of the iron core (2) near the center of the inner support ring (1) is matched with the flexible contact layer. The middle of the iron core (2) stacked in the same mounting groove (4) is wound with coil (3). Wherein: the upper end of the inner support ring (1) is provided with a cover plate (10), the lower side of the cover plate (10) is provided with evenly distributed corrugated stainless steel elastic pressure plates (14), the upper end of the inner side of the mounting groove (4) is slidably connected with an insulating buffer plate (8), the lower side of the insulating buffer plate (8) is in contact with the upper side of the iron core (2) adjacent to the lower side, and the corrugated stainless steel elastic pressure plates (14) are in contact with the upper side of the insulating buffer plate (8) adjacent to the lower side.

2. The amorphous stator for a servo motor according to claim 1, characterized in that: The flexible contact layer is an elastic resin layer (6), and the middle part of the mounting groove (4) is provided with a guide strip (5). The outer side of the guide strip (5) and the inner wall of the mounting groove (4) are both provided with an elastic resin layer (6).

3. The amorphous stator for a servo motor according to claim 2, characterized in that: The iron core (2) is provided with a guide groove (7) at one end near the center of the inner support ring (1). The guide groove (7) is slidably connected to the elastic resin layer (6) on the outer side of the radially adjacent guide strip (5). The outer side of the iron core (2) near the center of the inner support ring (1) is slidably connected to the elastic resin layer (6) on the inner wall of the radially adjacent mounting groove (4).

4. The amorphous stator for a servo motor according to claim 1, characterized in that: The upper side of the inner support ring (1) is provided with evenly distributed protrusions (9), and the lower side of the cover plate (10) is provided with evenly distributed grooves (11), and the grooves (11) are all inserted into the protrusions (9) adjacent to the lower side.

5. An amorphous stator for a servo motor according to claim 1, characterized in that: The upper side of the inner support ring (1) and the upper side of the cover plate (10) are provided with evenly distributed connecting holes (12), and rubber bolts (13) are threaded between two adjacent connecting holes (12).

6. An amorphous stator for a servo motor according to claim 1, characterized in that: The lower end of the inner support ring (1) is provided with a shell (15), and both the inner support ring (1) and the iron core (2) are located inside the shell (15). The upper end of the shell (15) is threaded with a closing plate.

7. An amorphous stator for a servo motor according to claim 1, characterized in that: The iron cores (2) are all amorphous alloy iron cores.

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