Thrust enhanced vector reluctance motor

Abstract

The utility model discloses a thrust enhancement type vector reluctance motor, which relates to the technical field of mechanical transmission and comprises a screw main body, a thrust enhancement type vector reluctance motor and a thrust enhancement type vector reluctance motor, the magnetic resistance adjusting device is connected with the ball nut and is used for generating a vector magnetic field; the vector control module is connected with the magnetic resistance adjusting device and is used for adjusting the magnetic field intensity and the direction so as to control the movement track and the stress state of a ball in the ball nut; wherein the magnetic resistance adjusting device comprises a stator assembly and a rotor assembly, the rotor assembly is fixedly arranged on the outer ring of the ball nut in a sleeving mode, the stator assembly is arranged outside the rotor assembly in a sleeving mode, an air gap is reserved between the stator assembly and the rotor assembly, the stator assembly is fixed to external equipment, and the vector control module is connected to the stator assembly. By introducing the vector magnetic resistance effect, rolling friction is effectively reduced, the transmission efficiency and precision are improved, and the device is suitable for more complex and high-requirement working environments.

Description

Technical Field

[0001] This application relates to the field of mechanical transmission technology, and in particular to a thrust-enhanced vector reluctance motor. Background Technology

[0002] With the development of industrial automation and high-precision machining, the demand for linear transmission systems is increasing. Traditional linear transmission devices often use drive motors connected to ball screws to achieve linear transmission. Their main function is to convert rotary motion into linear motion or torque into axial reciprocating force. They are widely used in CNC machine tools, automation equipment and other fields.

[0003] Although traditional linear transmission devices have advantages such as high precision and high efficiency, traditional ball screws still have some technical limitations. In particular, in some high-load and high-speed operating applications, the rolling motion of the balls in the screw inevitably generates friction. The heat and wear caused by friction will affect the transmission efficiency and the service life of the screw. Furthermore, long-term operation may lead to a decrease in the accuracy of the system and increase maintenance costs. Therefore, this application proposes a new technical solution. Utility Model Content

[0004] In order to effectively reduce the rolling friction between the balls and the ball screw and improve the transmission efficiency, this application provides a thrust-enhanced vector reluctance motor.

[0005] This application provides a thrust-enhanced vector reluctance motor, which adopts the following technical solution:

[0006] A thrust-enhanced vector reluctance motor, comprising:

[0007] The lead screw body is externally fitted with ball nuts;

[0008] A reluctance adjustment device, which is connected to a ball nut, is used to generate a vector magnetic field;

[0009] The vector control module is connected to the magnetoresistive adjustment device and is used to adjust the magnetic field strength and direction in order to control the movement trajectory and force state of the balls in the ball nut.

[0010] The magnetic reluctance adjustment device includes a stator assembly and a rotor assembly. The rotor assembly is fixedly sleeved on the outer ring of the ball nut, and the stator assembly is sleeved on the outside of the rotor assembly. An air gap is left between the stator assembly and the rotor assembly. The stator assembly is fixed to an external device, and the vector control module is connected to the stator assembly.

[0011] Optionally, the stator assembly includes a stator body, multiple stator teeth, and multiple winding coils. The multiple stator teeth are arranged at equal intervals along the inner circumference of the stator body, and the winding coils are wound around the stator teeth. The vector control module is electrically connected to the winding coils. The rotor assembly is located in the inner cavity of the stator body and has an air gap between it and the stator teeth.

[0012] Optionally, the rotor assembly includes a rotor body, multiple rotor teeth, and a rotor yoke. The rotor body is fixedly sleeved on the outer ring of the ball nut. The multiple rotor teeth are equidistantly arranged along the outer circumference of the rotor body. The rotor yoke is fixedly connected to the rotor teeth. The rotor teeth and stator teeth are arranged opposite each other and have a fixed air gap between them.

[0013] Optionally, a limiting groove is formed on the outer wall of the ball nut, and a limiting strip is fixedly connected to the inner ring of the rotor body, with the limiting strip fixed in the limiting groove.

[0014] Optionally, the stator teeth are fixedly connected to a stator yoke, and the stator yoke abuts against the winding coil.

[0015] Optionally, a motor housing is fixedly fitted onto the outside of the stator body.

[0016] Optionally, the stator body is provided with an end cap at its end, and the end cap is fixedly connected to the end face of the motor housing.

[0017] In summary, this application includes the following beneficial technical effects: by using a vector control module to generate a vector magnetic field in the reluctance adjustment device, the rotor assembly and stator assembly rotate relative to each other. The rotor assembly drives the ball nut to rotate, thereby driving the power output of the lead screw body. By controlling the motion trajectory and force state of the balls in the lead screw through the vector magnetic field, the rolling friction is effectively reduced during the transmission process by utilizing the vector reluctance effect, thereby improving transmission efficiency and accuracy, extending the service life of the lead screw, and adapting to more complex and demanding working environments. Attached Figure Description

[0018] Figure 1 This is an assembly diagram of the overall structure of an embodiment of this application.

[0019] Figure 2 This is an exploded view of the overall structure of an embodiment of this application.

[0020] Explanation of reference numerals in the attached drawings: 1. Lead screw body; 2. Ball nut; 31. Stator body; 32. Stator teeth; 33. Winding coil; 41. Rotor body; 42. Rotor teeth; 5. End cover; 6. Motor housing. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0022] This application discloses a thrust-enhanced vector reluctance motor.

[0023] Reference Figure 1 and Figure 2 A thrust-enhanced vector reluctance motor includes a lead screw body 1, a reluctance adjustment device, and a vector control module. A ball nut 2 is sleeved and connected to the outside of the lead screw body 1. The ball nut 2 adopts the prior art, and its inner ring is provided with a ball guide groove, a ball return groove, and multiple balls. The balls contact the ball guide groove of the ball nut 2 and the ball guide groove of the lead screw body 1 to achieve rolling contact between the ball nut 2 and the lead screw body 1.

[0024] The reluctance adjustment device is used to generate a vector magnetic field. It includes a stator assembly and a rotor assembly. The rotor assembly is fixedly sleeved on the outer ring of the ball nut 2. The stator assembly is sleeved on the outside of the rotor assembly with a fixed gap between them. The stator assembly is fixed to an external device. The vector control module is connected to the stator assembly. The vector control module is used to adjust the magnetic field strength and direction, thereby controlling the movement trajectory and force state of the balls in the ball nut 2.

[0025] With the above settings, the vector control module enables the reluctance adjustment device to generate a vector magnetic field, causing the rotor assembly and stator assembly to rotate relative to each other. The rotor assembly drives the ball nut 2 to rotate. The vector magnetic field controls the movement trajectory and force state of the balls in the lead screw. During the transmission process, by utilizing the vector reluctance effect, the magnetic field force replaces part of the mechanical contact force, reducing the direct friction between the balls and the lead screw. This reduces friction and wear during the transmission process, improves transmission efficiency and accuracy, extends the service life of the lead screw, and adapts to more complex and demanding working environments.

[0026] Reference Figure 2 The stator assembly includes a stator body 31, multiple stator teeth 32, and multiple winding coils 33. The winding coils 33 are inductor coils, and the wire diameter and number of turns of each coil are determined according to the motor's performance design. The stator body 31 is a hollow, columnar structure with one open end. The stator teeth 32 are fixed to the inner wall of the stator body 31. Multiple stator teeth 32 are equidistantly arranged along the inner circumference of the stator body 31, and are made of multiple laminated silicon steel sheets. Multiple winding coils 33 are wound around each stator tooth 32. A stator yoke is provided on each stator tooth 32, which fixes the winding coils 33 to the stator teeth 32. The number of teeth, tooth width, and slot depth of the stator are designed and determined according to the motor's performance and requirements. The stator body 31 is connected to external equipment. The vector control module is electrically connected to the winding coils 33. The rotor assembly is located within the inner cavity of the stator body 31 and has a fixed gap between it and the stator teeth 32.

[0027] The rotor assembly includes a rotor body 41, multiple rotor teeth 42, and a rotor yoke. The rotor body 41 is a hollow columnar structure with an open end. The rotor body 41 is fixedly sleeved on the outer ring of the ball nut 2. The rotor teeth 42 are fixed to the outer wall of the rotor body 41. Multiple rotor teeth 42 are equidistantly arranged along the outer circumference of the rotor body 41. The rotor teeth 42 are made of multiple silicon steel sheets stacked together. The rotor yoke is fixedly connected to the rotor teeth 42. The rotor teeth 42 and the stator teeth 32 are arranged opposite to each other and a fixed air gap is left between them.

[0028] The vector control module includes a control motherboard, which is electrically connected to each winding coil 33. By energizing each winding coil 33, a vector electromagnetic field is generated around the stator body 31 due to the magnetic induction effect, causing the rotor body 41 to rotate relative to the stator body 31. This, in turn, causes the rotor body 41 to drive the ball nut 2 to rotate, driving the internal balls to move in one direction. The magnitude and direction of the magnetic field are adjusted by the control circuit in the control motherboard according to the real-time operating conditions. The control circuit uses conventional existing technology to adjust the magnetic field strength and current direction of the winding coil 33, so it will not be described in detail here.

[0029] With the above settings, by using magnetic field-assisted transmission, vector reluctance technology can reduce frictional resistance at low speeds and during startup, improve the transmission efficiency of the lead screw, and thus improve the accuracy of the transmission system.

[0030] In this embodiment, if the lead screw is fixedly installed in the automated equipment, the stator body 31 outputs power to other external devices, so that when the rotor body 41 rotates, the stator body 31 can move along the length of the lead screw. In other embodiments, if the stator body 31 is fixedly installed in the automated equipment, the two ends of the lead screw can be connected to external devices for power output. Therefore, this application can select an appropriate assembly method according to different application scenarios.

[0031] Regarding the fixing method between the ball nut 2 and the rotor body 41, it can be achieved by opening a limiting groove on the outer wall of the ball nut 2, fixing a limiting strip on the inner ring of the rotor body 41, and fixing the limiting strip in the limiting groove, thereby achieving the limiting and enabling the rotor body 41 to drive the ball nut 2 to rotate synchronously.

[0032] Secondly, an end cap 5 is fixedly connected to the open end of the stator body 31, and a motor housing 6 is fixedly sleeved on the outside of the stator body 31. The end cap 5 is fixedly connected to the end face of the motor housing 6. By setting the motor housing 6, the stator assembly is protected and fixed. By setting the end cap 5, the internal structure of the stator assembly and the mover assembly is protected.

[0033] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A thrust-augmented vector-reluctance electric machine characterized by, The application relates to a ball screw device. The ball screw device comprises a screw body (1), a ball nut (2) connected to the outer part of the screw body (1), a magnetoresistance adjusting device connected to the ball nut (2) and used for generating a vector magnetic field, and a vector control module connected to the magnetoresistance adjusting device and used for adjusting the intensity and direction of the magnetic field so as to control the movement track and stress state of the balls in the ball nut (2). The magnetoresistance adjusting device comprises a stator assembly and a rotor assembly, the rotor assembly is fixedly sleeved on the outer ring of the ball nut (2), the stator assembly is sleeved on the outer part of the rotor assembly, and an air gap is left between the stator assembly and the rotor assembly, the stator assembly is fixed with an external device, and the vector control module is connected to the stator assembly. The stator assembly comprises a stator body (31), a plurality of stator teeth (32) and a plurality of winding coils (33), the stator teeth (32) are arranged and distributed in a circumferential equidistant manner along the inner ring of the stator body (31), the winding coils (33) are wound on the stator teeth (32), the vector control module is electrically connected to the winding coils (33), and the rotor assembly is located in the inner cavity of the stator body (31) and leaves an air gap between the stator teeth (32). The rotor assembly comprises a rotor body (41), a plurality of rotor teeth (42) and a rotor yoke, the rotor body (41) is fixedly sleeved on the outer ring of the ball nut (2), the rotor teeth (42) are arranged and distributed in a circumferential equidistant manner along the outer ring of the rotor body (41), the rotor yoke is fixedly connected to the rotor teeth (42), the rotor teeth (42) are arranged opposite to the stator teeth (32) and leave a fixed air gap between each other.

2. A thrust-augmented flux-switching motor according to claim 1, characterized in that: A limiting groove is formed in the outer wall of the ball nut (2), a limiting strip is fixedly connected to the inner ring of the rotor body (41), and the limiting strip is fixed in the limiting groove.

3. A thrust-augmented flux-switching motor according to claim 2, characterized in that: The stator teeth (32) are fixedly connected with a stator yoke, and the stator yoke abuts against the winding coils (33).

4. A thrust-augmented flux-switching motor according to claim 3, characterized in that: A motor shell (6) is fixedly sleeved on the outer part of the stator body (31).

5. A thrust-augmented flux-switching motor according to claim 2, characterized in that: An end cover (5) is arranged at the end of the stator body (31), and the end cover (5) is fixedly connected to the end face of the motor shell (6).

6. A thrust-augmented flux-switching motor according to claim 2, characterized in that: ​ 7. A thrust-augmented flux-switching motor according to claim 6, characterized in that: ​

Images