Five-axis rotary table driven by yokeless axial flux motor

Abstract

The utility model provides a kind of five-axis rotary table of yokeless axial flux motor drive, including shell, rotatablely arranged in shell's rotating shaft, and the driving assembly for driving rotating shaft around rotating shaft outer periphery, the driving assembly includes magnetic field generating part and magnetic field response part, magnetic field generating part generates magnetic field after energization, magnetic field response part is linked with rotating shaft, and directly drives rotating shaft rotation under the action of the magnetic field;It uses the driving mode of yokeless axial flux motor, without silicon steel sheet as motor stator core material, it helps to eliminate cogging effect, reduce thrust fluctuation, improve power density, further improve the driving precision and efficiency of rotary table, applicable to the precision machining, detection or positioning occasion of high-precision, high-speed, multi-freedom motion.

Description

Technical Field

[0001] This utility model relates to the field of five-axis turntable technology, and more specifically, to a five-axis turntable driven by a yokeless axial flux motor. Background Technology

[0002] As a core component of CNC machine tools, the five-axis rotary table faces increasingly stringent requirements as the manufacturing industry moves towards higher speeds, higher precision, and more complex designs. The performance of its drive system directly affects machining accuracy and energy efficiency.

[0003] Existing technologies, such as patent CN119238147A, describe a five-axis turntable driven by an axial flux motor. One end of the rotating shaft of the five-axis turntable is equipped with a motor rotor, and the end of the motor rotor away from the rotating shaft is equipped with a motor stator. The motor stator is equipped with coil windings. The rotating shaft, motor stator, and motor rotor are coaxially arranged and driven by an axial flux motor. However, it still uses a traditional magnetic yoke structure, such as a motor rotor magnetic yoke, which has problems such as large weight, high loss, and complex structure.

[0004] Therefore, there is an urgent need for a five-axis rotary table driven by a yokeless axial flux motor, which eliminates the need for silicon steel sheets as the stator core material, helps to eliminate cogging effect, reduce thrust fluctuation, and improve power density. At the same time, by setting up a cooling component, the drive component can be effectively cooled, and by setting up a detection component to detect the rotation parameters of the shaft in real time, its machining accuracy and stability can be further improved. Utility Model Content

[0005] The purpose of this invention is to propose a five-axis turntable driven by a yokeless axial flux motor, comprising a housing 1, a rotating shaft 2 rotatably disposed within the housing 1, and a drive assembly 3 surrounding the rotating shaft 2 for driving the rotating shaft 2; it adopts a yokeless axial flux motor drive method, eliminating the need for silicon steel sheets as the stator core material of the motor, which helps to eliminate cogging effect, reduce thrust fluctuation, increase power density, and further improve the turntable drive accuracy and efficiency.

[0006] A five-axis rotary table driven by a yokeless axial flux motor includes a housing 1, a rotating shaft 2 rotatably disposed within the housing 1, and a drive assembly 3 surrounding the outer periphery of the rotating shaft 2 for driving the rotating shaft 2 to rotate. The drive assembly 3 has a magnetic field generating part 31 and a magnetic field responding part 32. The magnetic field generating part 31 generates a magnetic field when energized, and the magnetic field responding part 32 is linked with the rotating shaft 2 and drives the rotating shaft 2 to rotate under the action of the magnetic field.

[0007] Furthermore, the magnetic field response unit 32 includes a first connecting part 321 and a second connecting part 322 located on both sides of the axial direction of the magnetic field generating part 31. The first connecting part 321 and the second connecting part 322 are both connected to the rotating shaft 2, and the magnetic element 323 of the magnetic field response unit 32 is disposed on the first connecting part 321 and the second connecting part 322.

[0008] Furthermore, the magnetic poles of the magnetic components 323 on the first connecting portion 321 and the second connecting portion 322 are arranged vertically in correspondence.

[0009] Furthermore, the magnetic element 323 is arranged with alternating polarities on the first connecting portion 321 and the second connecting portion 322.

[0010] Furthermore, the magnetic field generating unit 31 includes a plurality of split coil units 311, each coil unit 311 being arranged circumferentially along the rotating shaft 2.

[0011] Furthermore, a fixing structure 4 is provided between the coil units 311 for connecting and positioning each coil unit 311.

[0012] Furthermore, a cooling component 5 for cooling the drive component 3 is provided on the outside of the drive component 3, and the fixing structure 4 cooperates with the side of the cooling component 5 near the rotating shaft 2, and the fixing structure 4 is made of insulating material.

[0013] Furthermore, the cooling assembly 5 is provided with an inlet and an outlet for the flow of cooling medium, so as to achieve cooling through the circulation of cooling medium.

[0014] Furthermore, the housing 1 is provided with a detection component 6 for detecting the rotation parameters of the rotating shaft 2.

[0015] Furthermore, the detection component 6 includes a movable part 61 and a fixed part 62 that can rotate relative to each other. The movable part 61 is linked with the rotating shaft 2, and the fixed part 62 is fixed relative to the housing 1.

[0016] The beneficial effects of this utility model are as follows: A five-axis rotary table driven by a yokeless axial flux motor includes a housing 1, a rotating shaft 2 rotatably disposed within the housing 1, and a drive assembly 3 surrounding the rotating shaft 2 and used to drive the rotating shaft 2 to rotate. The magnetic field generating unit 31 generates a magnetic field after being energized, and the magnetic field response unit 32 is linked to the rotating shaft 2 and drives the rotating shaft 2 to rotate under the action of the magnetic field. It adopts a yokeless axial flux motor drive method, eliminating the need for silicon steel sheets as the motor stator core material, which helps to eliminate cogging effect, reduce thrust fluctuation, and increase power density. This is further enhanced by the symmetrical arrangement and alternating polarity design of the magnetic components 323. The magnetic field distribution is more uniform, and the torque output is more stable. The cooling component 5 on the outside of the drive component 3 achieves efficient heat dissipation through circulating medium, which solves the problem of high temperature damage to the motor, reduces component fatigue wear, and effectively extends the service life of the turntable. The design of the split coil unit 311 facilitates individual repair or replacement of components, reducing maintenance costs. The cooperative design of the fixed structure 4 and the cooling component 5, as well as the adaptability of the detection component 6, make it easier for the turntable to expand its functions or adjust parameters according to actual needs, adapting to the processing requirements of different scenarios. The real-time parameter feedback of the detection component 6 enables precise control. The machining accuracy and motion stability of the turntable are significantly improved. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of a five-axis rotary table driven by a yokeless axial flux motor according to the present invention.

[0018] Figure 2 This is a partial exploded view of a five-axis rotary table driven by a yokeless axial flux motor according to the present invention.

[0019] Explanation of main component symbols

[0020] 1. Housing; 2. Rotating shaft; 3. Drive assembly; 31. Magnetic field generating part; 32. Magnetic field responding part; 321. First connecting part; 322. Second connecting part; 323. Magnetic component; 311. Coil unit; 4. Fixing structure; 5. Cooling assembly; 6. Detection assembly; 61. Moving part; 62. Fixing part.

[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0022] The following embodiments are described to aid in understanding this application. These embodiments are not, and should not be, construed in any way as limiting the scope of protection of this application.

[0023] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as individual functional units (which may include subunits), but those skilled in the art will recognize that various components or portions thereof may be divided into individual components or may be integrated together (including integrated within a single system or component).

[0024] Furthermore, the connection between components or systems is not intended to be limited to a direct connection; on the contrary, data between these components may be modified, reformatted, or otherwise altered by intermediate components. Additionally, other or fewer connections may be used. It should also be noted that the terms "connection," "link," or "input" should be understood to include direct connections, indirect connections via one or more intermediate devices, and wireless connections. Example 1:

[0025] like Figure 1 The image shown is a cross-sectional schematic diagram of a five-axis rotary table driven by a yokeless axial flux motor according to this utility model; as shown... Figure 2 The image shown is a partial exploded view of a five-axis rotary table driven by a yokeless axial flux motor according to this utility model.

[0026] A five-axis rotary table driven by a yokeless axial flux motor includes a housing 1, a rotating shaft 2 rotatably disposed within the housing 1, and a drive assembly 3 surrounding the rotating shaft 2 and used to drive the rotating shaft 2 to rotate. The drive assembly 3 has a magnetic field generating part 31 and a magnetic field responding part 32. The magnetic field generating part 31 generates a magnetic field when energized, and the magnetic field responding part 32 is linked with the rotating shaft 2 and drives the rotating shaft 2 to rotate under the action of the magnetic field. By using the drive assembly of a yokeless axial flux motor, silicon steel sheets are not required as the stator core material of the motor, which helps to eliminate cogging effect, reduce thrust fluctuation, improve power density and stability, and at the same time reduce the overall weight and volume of the motor to improve working efficiency.

[0027] The magnetic field response unit 32 includes a first connecting portion 321 and a second connecting portion 322 located on both sides of the axial direction of the magnetic field generating unit 31. Both the first connecting portion 321 and the second connecting portion 322 are connected to the rotating shaft 2, and the magnetic element 323 of the magnetic field response unit 32 is disposed on the first connecting portion 321 and the second connecting portion 322. The magnetic poles of the magnetic element 323 on the first connecting portion 321 and the second connecting portion 322 are arranged vertically in a corresponding manner; the symmetrical distribution of magnetic poles makes the magnetic field effect more uniform, which can enhance the axial coupling strength of the magnetic field, reduce magnetic field leakage, and improve the magnetic energy utilization rate. The magnetic element 323 is arranged with alternating polarity on the first connecting portion 321 and the second connecting portion 322; the alternating polarity design, combined with the axial magnetic flux characteristics, improves the dynamic response speed of the motor and ensures smoother turntable operation.

[0028] The magnetic field generating unit 31 includes multiple split-type coil units 311, which are arranged circumferentially along the rotating shaft 2. This modular design of the coils facilitates individual installation, maintenance, or replacement, reducing maintenance costs. A fixing structure 4 is provided between the coil units 311 for connecting and positioning them. This enhances the overall structural strength of the coil units 311 and ensures precise connection and positioning of each coil unit, preventing magnetic field disturbances caused by coil displacement during operation and guaranteeing magnetic field stability.

[0029] The drive assembly 3 is provided with a cooling assembly 5 on its outer side for cooling the drive assembly 3. The fixing structure 4 cooperates with the side of the cooling assembly 5 near the rotating shaft 2, and the fixing structure 4 is made of insulating material. The fixing structure 4 made of insulating material cooperates with the cooling assembly 5, which avoids the risk of leakage, optimizes the heat dissipation path, improves cooling efficiency, and ensures stable operation of the motor in high-temperature environments. The cooling assembly 5 is provided with an inlet and an outlet for the flow of cooling medium to achieve cooling through the circulation of cooling medium.

[0030] The housing 1 is provided with a detection component 6 for detecting the rotation parameters of the rotating shaft 2; the detection component 6 includes a movable part 61 and a fixed part 62 that can rotate relative to each other, the movable part 61 is linked with the rotating shaft 2, and the fixed part 62 is fixed relative to the housing 1; the detection component 6 monitors the rotation parameters of the rotating shaft in real time, provides data support for the closed-loop control of the turntable, can correct drive errors in a timely manner, improve the positioning accuracy and motion repeatability of the turntable, and meet the requirements of high-precision machining.

[0031] The beneficial effects of this utility model are as follows: A five-axis rotary table driven by a yokeless axial flux motor includes a housing 1, a rotating shaft 2 rotatably disposed within the housing 1, and a drive assembly 3 surrounding the rotating shaft 2 and used to drive the rotating shaft 2 to rotate. The magnetic field generating unit 31 generates a magnetic field after being energized, and the magnetic field response unit 32 is linked to the rotating shaft 2 and drives the rotating shaft 2 to rotate under the action of the magnetic field. It adopts a yokeless axial flux motor drive method, eliminating the need for silicon steel sheets as the stator core material, which helps to eliminate cogging effect, reduce thrust fluctuation, and improve power density and stability. Combined with the symmetrical arrangement and alternating polarity of the magnetic components 323... The design ensures a more uniform magnetic field distribution and more stable torque output. The cooling component 5 on the outside of the drive component 3 achieves efficient heat dissipation through a circulating medium, solving the problem of high-temperature damage to the motor, reducing component fatigue wear, and effectively extending the service life of the turntable. The design of the split coil unit 311 facilitates individual repair or replacement of components, reducing maintenance costs. The cooperative design of the fixed structure 4 and the cooling component 5, as well as the adaptability of the detection component 6, make it easier for the turntable to expand its functions or adjust parameters according to actual needs, adapting to the processing requirements of different scenarios. The real-time parameter feedback of the detection component 6 enables precise control, significantly improving the machining accuracy and motion stability of the turntable.

[0032] Although this application discloses several aspects and embodiments, other aspects and embodiments will be obvious to those skilled in the art. Various modifications and improvements can be made without departing from the concept of this application, and these all fall within the scope of protection of this application. The various aspects and embodiments disclosed in this application are for illustrative purposes only and are not intended to limit this application. The actual scope of protection of this application is determined by the claims.

Claims

1. A five-axis rotary table driven by a yokeless axial flux motor, comprising a housing (1), a rotating shaft (2) rotatably disposed within the housing (1), and a drive assembly (3) surrounding the outer periphery of the rotating shaft (2) and used to drive the rotating shaft (2) to rotate, characterized in that: The drive assembly (3) has a magnetic field generating part (31) and a magnetic field response part (32). The magnetic field generating part (31) generates a magnetic field after being energized. The magnetic field response part (32) is linked with the rotating shaft (2) and drives the rotating shaft (2) to rotate under the action of the magnetic field.

2. The five-axis rotary table driven by a yokeless axial flux motor as described in claim 1, characterized in that: The magnetic field response unit (32) includes a first connecting part (321) and a second connecting part (322) located on both sides of the axial direction of the magnetic field generating part (31). The first connecting part (321) and the second connecting part (322) are both connected to the rotating shaft (2), and the magnetic component (323) of the magnetic field response unit (32) is provided on the first connecting part (321) and the second connecting part (322).

3. A five-axis rotary table driven by a yokeless axial flux motor as described in claim 2, characterized in that: The magnetic poles of the magnetic components (323) on the first connecting part (321) and the second connecting part (322) are arranged vertically and vertically respectively.

4. A five-axis rotary table driven by a yokeless axial flux motor as described in claim 3, characterized in that: The magnetic components (323) are arranged in alternating polarities on the first connecting portion (321) and the second connecting portion (322).

5. A five-axis rotary table driven by a yokeless axial flux motor as described in claim 1, characterized in that: The magnetic field generating unit (31) includes multiple split coil units (311), and each coil unit (311) is arranged circumferentially along the rotating shaft (2).

6. A five-axis rotary table driven by a yokeless axial flux motor as described in claim 5, characterized in that: A fixed structure (4) is provided between the coil units (311) for connecting and positioning each coil unit (311).

7. A five-axis rotary table driven by a yokeless axial flux motor as described in claim 6, characterized in that: The drive assembly (3) is provided with a cooling assembly (5) on the outside for cooling the drive assembly (3). The fixing structure (4) is matched with the side of the cooling assembly (5) near the rotating shaft (2), and the fixing structure (4) is made of insulating material.

8. A five-axis rotary table driven by a yokeless axial flux motor as described in claim 7, characterized in that: The cooling assembly (5) is provided with an inlet and an outlet for the flow of cooling medium, so as to achieve cooling through the circulation of cooling medium.

9. A five-axis rotary table driven by a yokeless axial flux motor as described in claim 1, characterized in that: The housing (1) is provided with a detection component (6) for detecting the rotation parameters of the rotating shaft (2).

10. A five-axis rotary table driven by a yokeless axial flux motor as described in claim 9, characterized in that: The detection component (6) includes a movable part (61) and a fixed part (62) that can rotate relative to each other. The movable part (61) is linked with the rotating shaft (2), and the fixed part (62) is fixed relative to the housing (1).

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