Microspur adjusting motor

Abstract

The utility model relates to the field of stepless speed regulation motor control, and discloses a micro-distance adjustment motor. Comprising a shell, a rotor and a stator assembly, the shell comprises a first supporting part provided with a first translation sliding groove, the stator assembly comprises a first stator, a rotating assembly comprises a first rotating disc provided with a first spiral guide rail, and a connecting assembly comprises a first connecting piece fixedly connected with the first stator; the first connecting piece is slidably connected with the first translation sliding groove and the first spiral guide rail. The micro-distance adjusting motor changes the structure of a traditional motor, the magnetic field intensity around the rotor is further changed by changing the distance between the stators and the rotor under the condition that current and voltage are not changed, and the magnetic field intensity around the rotor is increased along with the reduction of the distance between the stators, so that the magnetic field intensity around the rotor is adjusted and controlled, and the magnetic field intensity around the rotor is adjusted and controlled. And the output rotating speed and torque of the motor are controlled. The internal structure of the stepless speed regulation motor can be optimized, the influence of harmonic waves is weakened, and the stability of the motor during operation is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of stepless speed regulation motor control, in particular to a micro-pitch adjustment motor. Background Art

[0002] The working principle of the motor is mainly based on the force of the magnetic field on the current and the electromagnetic induction phenomenon. The motor is mainly composed of a stator and a rotor. The current-carrying wire is acted upon by a force in the magnetic field, thereby generating a rotational motion. Specifically, when current passes through the coil, a magnetic field is generated around it. This magnetic field interacts with the magnetic field of the permanent magnet or electromagnet in the motor, causing the coil (i.e., the rotor) to begin to rotate. As the coil rotates, the direction and size of the magnetic field change continuously, which involves the electromagnetic induction phenomenon. In the motor, the role of electromagnetic induction is mainly reflected in the generation of a rotational torque to rotate the motor. At the same time, a reverse magnetic field is generated through the induced current to achieve commutation of the magnetic field, thereby ensuring continuous rotation of the motor.

[0003] Motors are generally nonlinear components, and when they run for a long time, the internal resistance will also heat up, and the temperature coefficient will also be nonlinear. The generation of harmonics is due to the AC passing through nonlinear components. Therefore, when the voltage is large, a small voltage adjustment will be affected by the superposition of the second harmonic or third harmonic waveform on the fundamental wave. When the motor runs at high speed, it is easy to be disturbed by external interference, resulting in speed fluctuations. The motor products on the market mainly achieve stepless speed regulation of the motor by changing the voltage or current of the motor and adding a special controller. The disadvantages are that it increases the complexity and cost of the stepless speed regulation motor, and it is difficult to control the changes of small current and voltage. At the same time, it is easy to be disturbed by harmonics and has poor stability. Utility Model Content

[0004] In order to solve at least one aspect of the above problems, the utility model provides a micro-pitch adjustment motor, comprising a housing, a rotor and a stator assembly adapted to the rotor, and also comprising a connecting assembly and a rotating assembly, wherein one end of the connecting assembly is slidably connected to the rotating assembly, and the other end of the connecting assembly is fixedly connected to the stator assembly;

[0005] The housing includes a first support portion provided with a first translational slide groove, the stator assembly includes a first stator, the rotating assembly includes a first rotating disk provided with a first spiral guide rail, the connecting assembly includes a first connecting member fixedly connected to the first stator, the first connecting member is slidably matched with the first translational slide groove, and the first connecting member is slidably matched with the first spiral guide rail; a first central axis perpendicular to the motor shaft of the rotor is provided at the center position of the first spiral guide rail;

[0006] When the first spiral guide rail is driven to rotate by the first built-in motor, the first connecting member slides along the first spiral guide rail so that the first connecting member slides along the first translation groove, and at the same time, one end of the first connecting member drives the first stator to approach or move away from the rotor to change the magnetic field between the first stator and the rotor.

[0007] Optionally, the shell further includes a first inner shell, a first installation cavity is formed between the first inner shell and the first rotating disk, and the first installation cavity accommodates the first built-in motor and a first controller electrically connected to the first built-in motor.

[0008] Optionally, the first translation slot is provided on a side of the first support portion close to the rotor, and inner and outer sides of the first rotating disk abut against the first support portion and the first inner shell respectively.

[0009] Optionally, a first through hole is provided at the center of the first support portion, a first bearing matched with the first center axis is provided in the first through hole, the first center axis passes through the axial hole of the first bearing, and two sides of the first bearing are respectively connected to the first center axis and the side walls of the first through hole.

[0010] Optionally, a first platform is provided at one end of the first bearing close to the rotor, a first sensor is provided on the first platform, and the first sensor is a distance sensor, which is electrically connected to the first controller to detect the displacement distance of the first stator.

[0011] Optionally, a second sensor is provided at one end of the first stator close to the first sensor, the second sensor is a distance sensor, the first sensor sends a distance signal, and the second sensor receives the distance signal; or the second sensor sends a distance signal, and the first sensor receives the distance signal.

[0012] Optionally, a first ball is provided at a connection between the first connecting member and the first spiral guide rail, and a second ball is provided at a connection between the first connecting member and the first translational slide groove.

[0013] Optionally, a longitudinal section of the first spiral guide rail is formed with a spiral line, and the spiral line is an Archimedean spiral line.

[0014] Optionally, the housing includes a second supporting portion provided with a second translational slide groove, the stator assembly includes a second stator, the rotating assembly includes a second rotating disk provided with a second spiral guide rail, the connecting assembly includes a second connecting member fixedly connected to the second stator, and the second connecting member is slidably connected to the second translational slide groove and the second spiral guide rail at the same time; the center of the second spiral guide rail is provided with a second central axis perpendicular to the motor shaft of the rotor;

[0015] When the second spiral guide rail is driven to rotate by the second built-in motor, the two sides of the second connecting member slide along the second spiral guide rail and the second translation groove respectively, and at the same time, one end of the second connecting member drives the second stator to approach or move away from the rotor to change the magnetic field between the second stator and the rotor.

[0016] Optionally, the first stator and the second stator move synchronously toward or away from the rotor, and the first stator and the second stator move at the same speed.

[0017] Compared with the prior art, the micro-pitch adjustment motor in the utility model changes the structure of the traditional motor. Without changing the current and voltage, the distance between the stator and the rotor is changed, thereby changing the magnetic field strength around the rotor. Because the magnetic field strength around the rotor increases with the decrease of the stator spacing, the output speed and torque of the motor can be controlled by adjusting the magnetic field strength around the rotor. It can optimize the internal structure of the stepless speed regulating motor, reduce the influence of harmonics, and enhance the stability of the motor during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An exploded view of a micro-pitch adjustment motor according to an embodiment of the utility model;

[0019] Figure 2 A cross-sectional view of a micro-adjustment motor according to an embodiment of the utility model Figure 1 ;

[0020] Figure 3 A cross-sectional view of a micro-adjustment motor according to an embodiment of the utility model Figure 2 ;

[0021] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0022] Figure 5 It is a schematic diagram of the combination of the rotating assembly, the connecting assembly, the stator assembly and the rotor of the embodiment of the utility model;

[0023] Figure 6 This is a schematic diagram of the combination of the first rotating disk and the first connecting member of an embodiment of the utility model;

[0024] Figure 7 This is a structural diagram of a first connecting member according to an embodiment of the utility model;

[0025] Figure 8 This is a schematic diagram of the combination of the first support portion and the first stator of an embodiment of the utility model;

[0026] Fig. 9 for Figure 8Enlarged view of middle part B;

[0027] Fig.10 It is a combined cross-sectional view of the first connecting member, the first rotating disk and the first supporting portion of an embodiment of the utility model.

[0028] Description of reference numerals:

[0029] 1. Shell; 11. First support part; 111. First translation slide groove; 112. First through hole; 113. First accommodating cavity; 12. Second support part; 121. Second translation slide groove; 122. Second accommodating cavity; 13. First bearing; 14. First platform; 15. First sensor; 16. First inner shell; 161. First installation cavity; 162. First built-in motor; 163. First controller; 17. Second inner shell; 171. Second installation cavity; 172. Second built-in motor; 173. Second controller; 2. A rotating disk; 21. A first spiral guide rail; 211. A first hook-shaped portion; 22. A first central axis; 3. A second rotating disk; 31. A second spiral guide rail; 32. A second central axis; 4. A first connecting member; 41. A first connecting portion; 42. A second connecting portion; 43. A first ball; 44. A second ball; 5. A second connecting member; 51. A third connecting portion; 52. A fourth connecting portion; 53. A third ball; 54. A fourth ball; 6. A first stator; 61. A second sensor; 7. A second stator; 8. A rotor; 81. A rotor bearing. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the description of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate positions or location relationships that are based on the positions or location relationships when the product is in normal use.

[0032] The terms "first" and "second" are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. The drawings of the embodiments of the present utility model are provided with a coordinate system XYZ, wherein the positive direction of the X-axis represents the left, the reverse direction of the X-axis represents the right, the positive direction of the Y-axis represents the front, the reverse direction of the Y-axis represents the back, the positive direction of the Z-axis represents the top, and the reverse direction of the Z-axis represents the bottom.

[0033] The utility model embodiment provides a micro-adjustment motor, combined with Figure 1-10As shown, it includes a housing 1, a rotor 8 and a stator assembly adapted to the rotor 8, and also includes a connecting assembly and a rotating assembly, one end of the connecting assembly is slidably connected to the rotating assembly, and the other end of the connecting assembly is fixedly connected to the stator assembly;

[0034] The housing 1 includes a first support portion 11 provided with a first translation slot 111, the stator assembly includes a first stator 6, the rotating assembly includes a first rotating disk 2 provided with a first spiral guide rail 21, the connecting assembly includes a first connecting member 4 fixedly connected to the first stator 6, the first connecting member 4 is slidably matched with the first translation slot 111, and the first connecting member 4 is slidably matched with the first spiral guide rail 21; the first spiral guide rail 21 is provided with a first central axis 22 perpendicular to the motor axis of the rotor 8 at the center position;

[0035] When the first spiral guide rail 21 is driven to rotate by the first built-in motor 162, the first connecting member 4 slides along the first spiral guide rail 21 so that the first connecting member 4 slides along the first translation groove 111. At the same time, one end of the first connecting member 4 drives the first stator 6 to approach or move away from the rotor 8 to change the magnetic field between the first stator 6 and the rotor 8.

[0036] In this embodiment, the direction close to the rotor 8 is the inner side, and the direction close to the housing 1 is the outer side.

[0037] like Figure 2 As shown, the upper and lower ends of the motor shaft of the rotor 8 are connected with rotor bearings 81. The upper rotor bearing 81 is arranged inside the housing 1, and the lower rotor bearing 81 is arranged at the bottom of the housing 1. The rotor 8 rotates relative to the housing 1 through the rotor bearings 81.

[0038] The motor shaft of the first built-in motor 162 is fixedly connected to the first central shaft 22 , and the first built-in motor 162 drives the first central shaft 22 to rotate, so that the first spiral guide rail 21 rotates.

[0039] The first connecting member 4 includes a first connecting portion 41 and a second connecting portion 42, the first connecting portion 41 is slidably connected to the first spiral guide rail 21, two ends of the second connecting portion 42 are respectively connected to the first stator 6 and the first connecting portion 41, and a side wall of the second connecting portion 42 is slidably connected to the first translational slide groove 111;

[0040] When the first built-in motor 162 drives the first spiral guide rail 21 to rotate, the first connecting part 41 slides along the first spiral guide rail 21, and at the same time, the first connecting part 41 drives the second connecting part 42 to slide along the first translation groove 111, and the second connecting part 42 drives the first stator 6 to approach or move away from the rotor 8, thereby changing the magnetic field between the first stator 6 and the rotor 8.

[0041] The macro adjustment motor changes the structure of the traditional motor. Without changing the current and voltage, the spiral rotation of the first spiral guide rail 21 is linked to the translational sliding of the first translational slide 111 by setting the first connecting member 4 to change the distance between the stator and the rotor 8, thereby changing the magnetic field strength around the rotor 8. Because the magnetic field strength around the rotor 8 increases with the decrease of the stator spacing, the output speed and torque of the motor are controlled by regulating the magnetic field strength around the rotor 8. While optimizing the internal structure of the stepless speed regulation motor, the influence of harmonics on the stepless speed regulation motor is also weakened, and the stability of the stepless speed regulation motor during operation is enhanced. In the process of realizing the speed regulation of the macro adjustment motor, the application sets the voltage to a constant value, and changes the traditional voltage speed regulation method to a mechanical speed regulation method, so that the change process is more stable.

[0042] The housing 1 further includes a first inner shell 16 . A first installation cavity 161 is formed between the first inner shell 16 and the first rotating disk 2 . The first installation cavity 161 accommodates the first built-in motor 162 and a first controller 163 electrically connected to the first built-in motor 162 .

[0043] The outer side of the first built-in motor 162 and the outer side of the first controller 163 are both fixedly connected to the first inner shell 16 .

[0044] like Figure 1-3 As shown, the first controller 163 is used to control the rotation speed and direction of the first built-in motor 162. When the first built-in motor 162 rotates faster, the sliding speed of the second connecting part 42 on the first translation slot 111 is faster, and the speed adjustment process of the macro adjustment motor is faster; conversely, when the first built-in motor 162 rotates slower, the sliding speed of the second connecting part 42 on the first translation slot 111 is slower, and the speed adjustment process of the macro adjustment motor is slower.

[0045] like Figure 6As shown, when the first controller 163 controls the first built-in motor 162 to rotate clockwise, the first built-in motor 162 drives the first spiral guide rail 21 to rotate clockwise synchronously, and the first connecting part 41 slides on the first spiral guide rail 21 and gradually approaches the first center axis 22. At the same time, because the second connecting part 42 is slidingly connected to the first translation groove 111, the first connecting part 41 drives the second connecting part 42 to approach the first center axis 22.

[0046] On the contrary, when the first controller 163 controls the first built-in motor 162 to rotate counterclockwise, the first built-in motor 162 drives the first spiral guide rail 21 to rotate counterclockwise synchronously, and the first connecting part 41 slides on the first spiral guide rail 21 and gradually moves away from the first center axis 22. At the same time, because the second connecting part 42 is slidingly connected to the first translation groove 111, the first connecting part 41 drives the second connecting part 42 to move away from the first center axis 22.

[0047] The first translation slot 111 is disposed on a side of the first support portion 11 close to the rotor 8 , and inner and outer sides of the first rotating disk 2 abut against the first support portion 11 and the first inner shell 16 respectively.

[0048] like Figure 1-3 As shown, the first support portion 11 is approximately cylindrical, specifically, composed of a circular surface and a side surface extending perpendicularly around the edge of the circular surface. The side surface is fixedly connected to or integrally arranged with the outermost side of the housing 1, and the first translation slot 111 is arranged on the circular surface, and the first translation slot 111 is approximately the radius of the circular surface.

[0049] A first accommodating cavity 113 is formed between the first supporting portion 11 and the shell 1. The first rotating disk 2, the first built-in motor 162, the first controller 163 and the first inner shell 16 are all accommodated in the first accommodating cavity 113 to save space, make the structure more compact, and reduce the volume of the macro adjustment motor.

[0050] like Figure 1 As shown, a first through hole 112 is provided at the center of the first supporting portion 11. Fig. 9 As shown, a first bearing 13 matched with the first central axis 22 is provided in the first through hole 112, the first central axis 22 passes through the axial hole of the first bearing 13, and the two sides of the first bearing 13 are respectively connected to the first central axis 22 and the side wall of the first through hole 112.

[0051] like Figure 2 and 3As shown, because the positions of the first support portion 11 and the first inner shell 16 are fixed, the inner and outer sides of the first rotating disk 2 are respectively supported by the first bearing 13 and the motor shaft of the first built-in motor 162, and rotate between the two.

[0052] like Fig. 9 As shown, a first platform 14 is provided at one end of the first bearing 13 close to the rotor 8 , and a first sensor 15 is provided on the first platform 14 . The first sensor 15 is a distance sensor, and the first sensor 15 is electrically connected to the first controller 163 to detect the displacement distance of the first stator 6 .

[0053] In this embodiment, the first platform 14 is fixedly connected to the first central axis 22, and the first sensor 15 is fixed on the first platform 14. The first sensor 15 may be an infrared distance sensor or an ultrasonic distance sensor, etc. When the first stator 6 approaches or moves away from the rotor 8, the first sensor 15 detects the relative movement distance of the first stator 6, and transmits the detected distance signal to the first controller 163, so that the first controller 163 can adjust the displacement distance of the first stator 6.

[0054] Furthermore, a second sensor 61 is provided at one end of the first stator 6 close to the first sensor 15, and the second sensor 61 is a distance sensor. The first sensor 15 sends a distance signal, and the second sensor 61 receives the distance signal; or the second sensor 61 sends a distance signal, and the first sensor 15 receives the distance signal.

[0055] The second sensor 61 may be an infrared distance sensor or an ultrasonic distance sensor, etc. In this embodiment, the first sensor 15 is a signal transmitter, the second sensor 61 is a signal receiver, and the second sensor 61 is electrically connected to the first controller 163. The second sensor 61 is located above the first translation slot 111, and when the first stator 6 approaches or moves away from the rotor 8, the first sensor 15 also approaches or moves away from the second sensor 61 along the direction of the first translation slot 111.

[0056] When the first stator 6 approaches or moves away from the rotor 8, the first sensor 15 sends out a low-frequency sinusoidal oscillation signal. After receiving the signal, the second sensor 61 converts it into distance information and transmits it to the first controller 163. The first controller 163 controls the rotation speed of the first built-in motor 162 according to the distance information. When the first controller 163 detects that the first stator 6 is at the closest distance to the rotor 8, the first controller 163 stops the rotation of the first built-in motor 162, or controls the first built-in motor 162 to rotate in the opposite direction to move the first stator 6 away from the rotor 8.

[0057] The coordination of the first sensor 15 and the second sensor 61 can reduce the round trip process of signals, making speed measurement more accurate and faster.

[0058] It is worth noting that the first sensor 15 may also be a signal receiver, and the second sensor 61 may also be a signal transmitter.

[0059] A first ball 43 is disposed at a connection between the first connecting member 4 and the first spiral guide rail 21 , and a second ball 44 is disposed at a connection between the first connecting member 4 and the first translational slide groove 111 .

[0060] like Figure 1 As shown, the first support portion 11 is in the shape of a disk on one side close to the first built-in motor 162, and the first spiral guide rail 21 is arranged perpendicular to the disk. Figure 4 As shown, first hook-shaped portions 211 are provided on both inner and outer sides of the first spiral guide rail 21 , and the first hook-shaped portions 211 are used to prevent the first connecting portion 41 from being separated from the guide rail of the first spiral guide rail 21 , so as to stabilize the rotating structure.

[0061] like Figure 4 The upper and lower ends of the first connecting portion 41 are respectively accommodated in the first hook-shaped portions 211 at the upper and lower ends of the first spiral guide rail 21. Two first balls 43 are provided and are respectively located between the first connecting portion 41 and the first hook-shaped portion 211, so that the first connecting portion 41 can slide more smoothly in the first spiral guide rail 21.

[0062] like Figure 4 and 7 As shown, the second connecting portion 42 is partially accommodated in the first translation groove 111 , and two second balls 44 are provided and are respectively located between the second connecting portion 42 and the first translation groove 111 , so that the second connecting portion 42 can slide more smoothly in the first translation groove 111 .

[0063] like Fig.10As shown, preferably, the longitudinal section of the first spiral guide 21 is formed with a spiral line, and the spiral line is an Archimedean spiral line. The Archimedean spiral line is a trajectory generated by a point leaving a fixed point at a constant speed while rotating around the fixed point at a fixed angular velocity, also known as a constant velocity spiral. The first spiral guide 21 configured in this way can make the first connecting part 41 approach the first central axis 22 at a constant speed during the sliding process. Further, the first connecting part 41 drives the second connecting part 42 to slide at a constant speed on the first translation slot 111, so that the first controller 163 can easily control the moving speed of the first stator 6.

[0064] like Figure 1-3 As shown, the housing 1 includes a second supporting portion 12 provided with a second translational slide groove 121, the stator assembly includes a second stator 7, the rotating assembly includes a second rotating disk 3 provided with a second spiral guide rail 31, the connecting assembly includes a second connecting member 5 fixedly connected to the second stator 7, and the second connecting member 5 is slidably connected to the second translational slide groove 121 and the second spiral guide rail 31 at the same time; the center of the second spiral guide rail 31 is provided with a second central axis 32 perpendicular to the motor axis of the rotor 8;

[0065] When the second spiral guide rail 31 is driven to rotate by the second built-in motor 172, the two sides of the second connecting member 5 slide along the second spiral guide rail 31 and the second translation groove 121 respectively, and at the same time, one end of the second connecting member 5 drives the second stator 7 to approach or move away from the rotor 8 to change the magnetic field between the second stator 7 and the rotor 8.

[0066] The first stator 6 and the second stator 7 are centrally symmetrical about the center point of the rotor 8, the first support portion 11 and the second support portion 12 are centrally symmetrical about the center point of the rotor 8, the first rotating disk 2 and the second rotating disk 3 are centrally symmetrical about the center point of the rotor 8, and the first connecting member 4 and the second connecting member 5 are centrally symmetrical about the center point of the rotor 8. This arrangement can optimize the internal structure of the stepless speed regulating motor and enhance the stability of the motor during operation.

[0067] Preferably, the first stator 6 and the second stator 7 move synchronously toward or away from the rotor 8 , and the first stator 6 and the second stator 7 move at the same speed.

[0068] Such an arrangement can make the magnetic field change more uniform and stable, and can also make the output speed of the macro adjustment motor change faster.

[0069] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A micro-pitch adjustment motor, comprising a housing (1), a rotor (8) and a stator assembly adapted to the rotor (8), characterized in that: It also includes a connecting component and a rotating component, one end of the connecting component is slidably connected to the rotating component, and the other end of the connecting component is fixedly connected to the stator component; The housing (1) comprises a first supporting portion (11) provided with a first translational slide groove (111), the stator assembly comprises a first stator (6), the rotating assembly comprises a first rotating disk (2) provided with a first spiral guide rail (21), the connecting assembly comprises a first connecting member (4) fixedly connected to the first stator (6), the first connecting member (4) slidingly cooperates with the first translational slide groove (111), and the first connecting member (4) slidingly cooperates with the first spiral guide rail (21); a first central axis (22) perpendicular to the motor axis of the rotor (8) is provided at the center position of the first spiral guide rail (21); When the first spiral guide rail (21) is driven to rotate by the first built-in motor (162), the first connecting member (4) slides along the first spiral guide rail (21), so that the first connecting member (4) slides along the first translation groove (111), and at the same time, one end of the first connecting member (4) drives the first stator (6) to approach or move away from the rotor (8), so as to change the magnetic field between the first stator (6) and the rotor (8).

2. The micro-pitch adjustment motor according to claim 1, characterized in that: The housing (1) further comprises a first inner housing (16), a first installation cavity (161) being formed between the first inner housing (16) and the first rotating disk (2), the first installation cavity (161) accommodating the first built-in motor (162), and a first controller (163) electrically connected to the first built-in motor (162).

3. The macro adjustment motor according to claim 2, characterized in that: The first translational sliding groove (111) is arranged on a side of the first supporting portion (11) close to the rotor (8), and the inner and outer sides of the first rotating disk (2) respectively abut against the first supporting portion (11) and the first inner shell (16).

4. The micro-pitch adjustment motor according to claim 2, characterized in that: A first through hole (112) is provided at the center of the first support portion (11), a first bearing (13) adapted to the first central axis (22) is provided in the first through hole (112), the first central axis (22) passes through the axial hole of the first bearing (13), and two sides of the first bearing (13) are respectively connected to the first central axis (22) and the side wall of the first through hole (112).

5. The macro adjustment motor according to claim 4, characterized in that: A first platform (14) is provided at one end of the first bearing (13) close to the rotor (8), and a first sensor (15) is provided on the first platform (14). The first sensor (15) is a distance sensor, and the first sensor (15) is electrically connected to the first controller (163) to detect the displacement distance of the first stator (6).

6. The micro-pitch adjustment motor according to claim 5, characterized in that: A second sensor (61) is provided at one end of the first stator (6) close to the first sensor (15); the second sensor (61) is a distance sensor; the first sensor (15) sends a distance signal and the second sensor (61) receives the distance signal; or the second sensor (61) sends a distance signal and the first sensor (15) receives the distance signal.

7. The macro adjustment motor according to claim 1, characterized in that: A first ball (43) is provided at the connection between the first connecting member (4) and the first spiral guide rail (21), and a second ball (44) is provided at the connection between the first connecting member (4) and the first translational slide groove (111).

8. The micro-pitch adjustment motor according to claim 1, characterized in that: The longitudinal section of the first spiral guide rail (21) is formed with a spiral line, and the spiral line is an Archimedean spiral line.

9. The macro adjustment motor according to any one of claims 1 to 8, characterized in that: The housing (1) comprises a second supporting portion (12) provided with a second translational slide groove (121); the stator assembly comprises a second stator (7); the rotating assembly comprises a second rotating disk (3) provided with a second spiral guide rail (31); the connecting assembly comprises a second connecting member (5) fixedly connected to the second stator (7); the second connecting member (5) is slidably connected to the second translational slide groove (121) and the second spiral guide rail (31); a second central axis (32) perpendicular to the motor axis of the rotor (8) is provided at the center of the second spiral guide rail (31); When the second spiral guide rail (31) is driven to rotate by the second built-in motor (172), the two sides of the second connecting member (5) slide along the second spiral guide rail (31) and the second translation groove (121) respectively, and at the same time, one end of the second connecting member (5) drives the second stator (7) to approach or move away from the rotor (8) to change the magnetic field between the second stator (7) and the rotor (8).

10. The micro-pitch adjustment motor according to claim 9, characterized in that: The first stator (6) and the second stator (7) move synchronously toward or away from the rotor (8), and the first stator (6) and the second stator (7) move at the same speed.

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