Three-phase hybrid stepping motor

Abstract

The utility model provides a three-phase hybrid stepping motor, which belongs to the technical field of motors, mainly aims at solving the problem that a traditional stepping motor is easy to generate torque fluctuation and vibration, and adopts the following technical scheme that the three-phase hybrid stepping motor comprises a base and a top cover, the base is connected with the top cover through a shell, and a mounting through cavity is arranged in the shell; a coil assembly is arranged in the mounting through cavity, a heat dissipation shell is arranged on the outer surface of the shell, a rotor is further arranged between the base and the top cover and located in the center of the coil assembly, rotating shafts are arranged at the top and the bottom of the rotor, an opening is formed in the top of the top cover, and one rotating shaft penetrates through the opening; through the arrangement of the coil assembly, the torque ripple can be reduced through the multiple sets of coils and the multiple sets of stators, through the arrangement of the two sets of stabilizing rings and the two sets of bearings, the motor vibration can be reduced, the problem that torque ripple and vibration are prone to occurring in a traditional stepping motor is solved, noise is reduced, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and more specifically, particularly relates to a three-phase hybrid stepping motor. Background Art

[0002] Among the existing stepper motors, the three-phase hybrid stepper motor adopts a hybrid drive method that combines a rotary three-phase coil and a linear single-phase coil. It has the characteristics of high torque, low vibration, and smooth operation. It has become the mainstream product on the market and has been widely used in the field of industrial automation.

[0003] For example, the Chinese utility model patent with patent number 201820134397.7 provides a three-phase hybrid stepper motor, which is provided with a motor base, a protective shell, a rotating shaft and multiple sets of heat dissipation frames. When in use, the rotating shaft is set on one side of the protective shell and the motor base is set on the other side of the protective shell to protect the rotating shaft through the protective shell. Multiple sets of heat dissipation frames are set on the outer surface of the motor base for heat dissipation, which has certain usability; however, traditional stepper motors are prone to torque fluctuations and vibrations when running at high speeds, which affects the stability of the motor. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a three-phase hybrid stepper motor to solve the problem in the prior art that the traditional stepper motor is prone to torque fluctuation and vibration when running at high speed, which affects the stability of the motor.

[0005] The purpose and effect of the three-phase hybrid stepping motor of the utility model are achieved by the following specific technical means:

[0006] A three-phase hybrid stepping motor includes a base and a top cover, wherein the base and the top cover are connected via a shell, wherein an installation cavity is provided in the shell, wherein a coil assembly is provided in the installation cavity, wherein a heat dissipation shell is provided on the outer surface of the shell, and a rotor is further provided between the base and the top cover, wherein the rotor is located at the center of the coil assembly, wherein a rotating shaft is provided at the top and the bottom of the rotor, and wherein an opening is provided at the top of the top cover, wherein one of the rotating shafts passes through the opening.

[0007] According to a preferred embodiment, the coil assembly includes a plurality of groups of winding components, the plurality of groups of winding components are arranged on the inner wall of the installation cavity at equal intervals, and the plurality of groups of winding components are all wound with coils.

[0008] According to a preferred embodiment, the coil assembly further includes a plurality of groups of stators, and the stators are disposed on a side of the plurality of groups of winding elements away from the plurality of groups of coils, and the plurality of groups of stators are located on a circumferential side of the rotor.

[0009] According to a preferred embodiment, the multiple groups of stators are each provided with multiple groups of teeth, and the rotor is provided with two groups of gear rings corresponding to the multiple groups of teeth, and the two groups of gear rings are arranged up and down on the outer surface of the rotor.

[0010] According to a preferred embodiment, a power slot is opened on one side of the base, one end of a signal line is inserted into the power slot, and the signal line is electrically connected to the plurality of coils.

[0011] According to a preferred embodiment, a mounting groove is provided on the top of the base and the bottom of the top cover, a fixing ring is provided at the bottom of the mounting groove, a bearing is clamped in the fixing ring, and a sealing sheet is also provided at the bottom of the mounting groove.

[0012] According to a preferred embodiment, the two groups of rotating shafts are respectively inserted into the two groups of bearings, and a stabilizing ring is arranged between the rotor and the two groups of bearings.

[0013] According to a preferred embodiment, three groups of fixing columns are arranged on the circumferential sides of the base and the top cover, threaded holes are opened on the three groups of fixing columns on the top cover, through holes are opened on the three groups of fixing columns on the base, and three groups of shoulder screws pass through the three groups of through holes and are fixedly connected with the three groups of threaded holes respectively.

[0014] According to a preferred embodiment, the outer surfaces of the shell and the heat dissipation casing are respectively provided with grooves corresponding to the three groups of shoulder screws, and the three groups of shoulder screws pass through the three groups of grooves respectively.

[0015] According to a preferred embodiment, a plurality of heat dissipation grooves are further provided on the outer surface of the heat dissipation housing.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. Through the setting of the coil assembly, when using the motor, multiple sets of coils and multiple sets of stators can effectively reduce torque fluctuations and vibrations, so that the rotor can be more stable when rotating at high speed; and through the setting of two sets of stabilizing rings and two sets of bearings, vibrations can be further reduced, solving the problem of torque fluctuations and vibrations that are prone to occur in traditional stepper motors, reducing noise, and increasing the service life of the motor.

[0018] 2. Through the setting of the heat dissipation shell and multiple groups of heat dissipation grooves, when using the motor, it can effectively dissipate the heat generated during the operation of the generator and reduce the temperature of the motor, thereby further extending the service life of the motor; and through the setting of the shell and two groups of sealing sheets, it can protect the internal components of the motor from dust, moisture and other potential damage factors, reduce the impact of the external environment on the motor, and ensure that the motor can operate stably under various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a three-phase hybrid stepping motor of the utility model;

[0020] Figure 2 It is an exploded diagram of a three-phase hybrid stepping motor of the utility model;

[0021] Figure 3 This is a front view of a three-phase hybrid stepping motor of the utility model;

[0022] Figure 4 yes Figure 3 Sectional view of AA in the middle;

[0023] Figure 5 This is a schematic diagram of the structure of a three-phase hybrid stepping motor after the coil assembly is assembled;

[0024] Figure 6 for Figure 5 Schematic diagram of the structure after decomposition.

[0025] Figure 7 This is a structural schematic diagram of a base and a top cover in a three-phase hybrid stepping motor of the utility model;

[0026] Figure 8 for Figure 7 Schematic diagram of the structure after decomposition.

[0027] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0028] 11. Base; 12. Top cover; 13. Shell; 14. Mounting cavity; 15. Heat dissipation shell; 16. Rotor; 17. Rotating axis; 18. Opening; 19. Heat dissipation slot; 21. Winding member; 22. Coil; 23. Stator; 24. Ring gear; 25. Power slot; 26. Signal line; 31. Mounting slot; 32. Fixing ring; 33. Bearing; 34. Sealing sheet; 35. Stabilizing ring; 36. Fixing column; 37. Threaded hole; 38. Shoulder screw; 39. Groove. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0030] Example:

[0031] As attached Figure 1 To Attachment Figure 8 As shown:

[0032] The utility model provides a three-phase hybrid stepping motor, comprising a base 11 and a top cover 12, the base 11 and the top cover 12 are connected together through a shell 13 to form a stable whole; a mounting cavity 14 is arranged in the shell 13 for accommodating a key coil assembly, the coil assembly is the core part of the motor, it generates an electromagnetic field, and provides power for the rotation of a rotor 16; in order to ensure good heat dissipation of the motor, a heat dissipation shell 15 is arranged on the outer surface of the shell 13, the heat dissipation shell 15 can effectively dissipate heat, protect the motor from overheating during operation, and extend the service life of the motor; a rotor 16 is arranged between the base 11 and the top cover 12, and it is located at the center of the coil assembly; the rotor 16 is a moving part of the motor, and realizes rotational motion through interaction with the electromagnetic field; a rotating shaft 17 is arranged at the top and bottom of the rotor 16, and one of the rotating shafts 17 passes through an opening 18 at the top of the top cover 12, so that the rotor 16 can be transmitted to an external device.

[0033] Please refer to Figure 2 , Figure 5 and Figure 6 As shown, the coil assembly includes multiple groups of winding members 21, which are evenly arranged on the inner wall of the mounting cavity 14. Each group of winding members 21 are closely arranged and maintain equal spacing between each other to ensure uniform distribution of the electromagnetic field and efficient operation of the motor. Coils 22 are wound on each group of winding members 21. These coils 22 are the key to the motor generating an electromagnetic field. They generate a magnetic field through the flow of current to provide power for the movement of the rotor 16.

[0034] Please refer to Figure 3 , Figure 4 and Figure 6 As shown, the coil assembly also includes a plurality of stators 23, which are located on the side of the winding member 21 away from the coil 22, and these stators 23 are distributed around the rotor 16 in an evenly spaced manner to form a match with the rotor 16; through the synergistic effect of multiple groups of coils 22 and multiple groups of stators 23, the torque fluctuation and vibration can be significantly reduced, so that the rotor 16 can run more smoothly, solving the problem of torque fluctuation and vibration that are prone to occur in traditional stepper motors.

[0035] Please refer to Figure 5 and Figure 6 As shown, multiple groups of stators 23 are each provided with multiple groups of teeth, and these teeth correspond to two groups of gear rings 24 on the rotor 16. The two groups of gear rings 24 are arranged in an up-and-down manner on the outer surface of the rotor 16. A power slot 25 is opened on one side of the base 11. One end of the signal line 26 passes through the power slot 25 and is electrically connected to the multiple groups of coils 22. The signal line 26 serves as a bridge between the motor and the control system to transmit the control signal to the multiple groups of coils 22 to realize the control of the motor.

[0036] Please refer to Figure 2 , Figure 7 and Figure 8 As shown, mounting grooves 31 are provided at the top of the base 11 and the bottom of the top cover 12. Fixing rings 32 are provided at the bottom of the mounting grooves 31. Bearings 33 are clamped inside the fixing rings 32 to provide support for the rotation of the rotor 16. Sealing sheets 34 are also provided at the bottom of the mounting grooves 31. These sealing sheets 34 cooperate with the housing 13 to form a double protection mechanism, which can effectively protect the internal components of the motor, so that the motor has excellent protection capabilities, can resist the erosion of dust, moisture and other potential damage factors, reduce the impact of the external environment on the motor, and ensure the stable operation of the motor.

[0037] Two sets of bearings 33 are installed on two sets of rotating shafts 17 to ensure smooth rotation. A stabilizing ring 35 is also provided between the rotor 16 and the two sets of bearings 33. The bearings 33 and the stabilizing ring 35 work together to effectively reduce the vibration amplitude of the motor during operation, which not only reduces the generation of noise but also increases the service life of the motor.

[0038] Please refer to Figure 7 and Figure 8 As shown, three groups of fixing columns 36 are arranged on the circumference of the base 11 and the top cover 12, and these fixing columns 36 provide support for the stable installation of the motor. The three groups of fixing columns 36 of the top cover 12 are provided with threaded holes 37, and the three groups of fixing columns 36 on the base 11 are provided with through holes. In order to firmly connect the top cover 12 and the base 11 together, three groups of shoulder screws 38 respectively pass through the three groups of through holes on the base 11 and are fixedly connected with the three groups of threaded holes 37 on the top cover 12, thereby ensuring the close connection between the top cover 12 and the base 11, and making the structure of the motor more solid and stable.

[0039] Please refer to Figure 2 , Figure 2 and Figure 2 As shown, grooves 39 are provided on the outer surfaces of the shell 13 and the heat dissipation shell 15 corresponding to the three groups of shoulder screws 38 respectively. The three groups of shoulder screws 38 pass through these grooves 39, which ensure the close connection of the various components of the motor, provide stable structural support, and facilitate the installation of the heat dissipation shell 15. In order to further enhance the heat dissipation effect, a plurality of heat dissipation grooves 19 are also provided on the outer surface of the heat dissipation shell 15. These heat dissipation grooves 19 increase the heat dissipation surface area and promote heat dissipation. During the operation of the motor, the heat generated can be quickly transferred to the external environment through the plurality of heat dissipation grooves 19 on the heat dissipation shell 15, which helps to reduce the temperature of the motor, thereby reducing the impact of overheating on the performance and life of the motor.

[0040] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A three-phase hybrid stepping motor, characterized in that: The invention comprises a base (11) and a top cover (12), wherein the base (11) and the top cover (12) are connected via a shell (13), wherein a mounting cavity (14) is arranged in the shell (13), wherein a coil assembly is arranged in the mounting cavity (14), and a heat dissipation shell (15) is arranged on the outer surface of the shell (13), and a rotor (16) is arranged between the base (11) and the top cover (12), wherein the rotor (16) is located at the center of the coil assembly, and a rotating shaft (17) is arranged at the top and the bottom of the rotor (16), and an opening (18) is arranged at the top of the top cover (12), wherein one of the rotating shafts (17) passes through the opening (18).

2. A three-phase hybrid stepping motor as claimed in claim 1, characterized in that: The coil assembly comprises a plurality of groups of winding members (21), the plurality of groups of winding members (21) being arranged at equal intervals on the inner wall of the installation cavity (14), and the plurality of groups of winding members (21) being wound with coils (22).

3. A three-phase hybrid stepping motor as claimed in claim 2, characterized in that: The coil assembly further comprises a plurality of groups of stators (23), the stators (23) being arranged on a side of the plurality of groups of winding members (21) away from the plurality of groups of coils (22), and the plurality of groups of stators (23) being located on the circumferential side of the rotor (16).

4. A three-phase hybrid stepping motor as claimed in claim 3, characterized in that: Multiple groups of teeth are arranged on each of the multiple groups of stators (23), and two groups of gear rings (24) are arranged on the rotor (16) corresponding to the multiple groups of teeth. The two groups of gear rings (24) are arranged in an upper and lower manner on the outer surface of the rotor (16).

5. A three-phase hybrid stepping motor as claimed in claim 4, characterized in that: A power slot (25) is provided on one side of the base (11), one end of a signal line (26) is inserted into the power slot (25), and the signal line (26) is electrically connected to the plurality of coils (22).

6. A three-phase hybrid stepping motor as claimed in claim 1, characterized in that: The top of the base (11) and the bottom of the top cover (12) are both provided with a mounting groove (31), a fixing ring (32) is provided at the bottom of the mounting groove (31), a bearing (33) is clamped inside the fixing ring (32), and a sealing sheet (34) is also provided at the bottom of the mounting groove (31).

7. A three-phase hybrid stepping motor as claimed in claim 6, characterized in that: The two groups of rotating shafts (17) are respectively inserted into the two groups of bearings (33), and a stabilizing ring (35) is arranged between the rotor (16) and the two groups of bearings (33).

8. A three-phase hybrid stepping motor as claimed in claim 1, characterized in that: Three groups of fixing columns (36) are arranged on the circumferential sides of the base (11) and the top cover (12); threaded holes (37) are provided on the three groups of fixing columns (36) on the top cover (12); through holes are provided on the three groups of fixing columns (36) on the base (11); and three groups of shoulder screws (38) pass through the three groups of through holes and are fixedly connected to the three groups of threaded holes (37) respectively.

9. A three-phase hybrid stepping motor as claimed in claim 8, characterized in that: The outer surfaces of the shell (13) and the heat dissipation housing (15) are provided with grooves (39) corresponding to the three groups of shoulder screws (38), and the three groups of shoulder screws (38) pass through the three groups of grooves (39) respectively.

10. A three-phase hybrid stepping motor as claimed in claim 1, characterized in that: A plurality of groups of heat dissipation grooves (19) are also provided on the outer surface of the heat dissipation housing (15).

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