Ball screw spline motor

Abstract

The utility model discloses a ball screw spline motor, and specifically relates to the technical field of motors, the ball screw spline motor comprises a motor main body, the motor main body is provided with a support assembly, the support assembly comprises a guide sleeve arranged at one end of the motor main body, an end cover is arranged between the motor main body and the guide sleeve, and the middle part of the end cover is provided with a ball screw. Compared with the prior art, through the arrangement of the supporting assembly, the whole design is simple, the structure is reasonable, through the corresponding cooperative use of all the structures, when the motor body is powered on, the stator is powered on to generate a magnetic field, then the rotor rotates due to the magnetic field, and the rotor is in threaded connection with the ball screw; through the arrangement of the guide sleeve, the ball screw can move in the guide sleeve through traction force generated when the rotor rotates, then the ball screw can be extended, output conversion can be easily and directly acted on the ball screw when the rotor rotates, the stability of the ball screw during displacement is ensured, and the thrust of the ball screw is larger.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to a ball screw spline motor. Background Technology

[0002] A ball screw is a precision component that converts rotary motion into linear motion. It mainly consists of a screw, a nut, and balls. The balls circulate in the helical grooves between the screw and the nut to reduce friction and improve transmission efficiency. In motor drive systems, ball screws are commonly used to convert the rotary output of a motor into linear motion, achieving precise position control and movement.

[0003] Among them, patent CN117060633A discloses a DC motor, a ball screw using the motor, and a working method; the present invention provides a DC motor, including: a motor housing, a rotor, a commutator, carbon brushes, and a positioning part, wherein the rotor is rotatably disposed in the motor housing; the commutator is fixed to the outer wall of the rotor; two limiting grooves are symmetrically opened on the inner wall of the motor housing, and the positioning part is adapted to be inserted into the limiting grooves; the positioning part is hollow inside, and the carbon brushes are slidably disposed in the positioning part; wherein, after the end of the carbon brush is inserted into the positioning part, the positioning part is adapted to limit the carbon brush; after the positioning part is initially inserted into the limiting groove, the distance between the two carbon brushes is greater than the outer diameter of the commutator; when the positioning part continues to be inserted into the limiting groove, the positioning part is adapted to push the carbon brushes to slide outward so that the end of the carbon brushes abuts against the commutator;

[0004] When in use, this structure pushes the carbon brush towards the commutator until the carbon brush abuts against the outer wall of the commutator; the first drive unit is adapted to drive the lead screw body to rotate helically; the second drive unit is adapted to drive the lead screw body to move axially. However, this structure requires high precision to convert output through a series of transmission methods, which makes the device relatively complex to manufacture and not easy to directly act on the lead screw. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a ball screw spline motor, which aims to solve the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a ball screw spline motor, including a motor body, on which a support component is provided;

[0007] The support assembly includes a guide sleeve disposed at one end of the motor body, and an end cap is disposed between the motor body and the guide sleeve;

[0008] A ball screw is provided in the middle of the end cover. A stator is embedded inside the motor body. A rotor is rotatably connected to the middle of the stator. The rotor is sleeved on the ball screw and threadedly connected to the ball screw. Sliding grooves are provided on both sides of the surface of the ball screw. A ball spline nut is embedded inside the guide sleeve. The ball spline nut is sleeved on the ball screw and slidably connected to the sliding groove.

[0009] As can be seen, in the above technical solution, the rotor rotates due to the magnetic field. The rotor and the ball screw are connected by threads, which allows the ball screw to be displaced in the guide sleeve by the traction force when the rotor rotates. This allows the ball screw to extend, making it easier for the output conversion when the rotor rotates to directly act on the ball screw, ensuring its stability during displacement and also making its thrust greater.

[0010] Optionally, in a possible implementation, bearings are embedded in the middle of the end cap and both ends of the motor body, and the bearings are sleeved on the outside of the rotor and rotatably connected to the rotor. A preload nut is provided at one end of the guide cylinder, the preload nut is located at one end of the guide sleeve and is threadedly connected to the guide sleeve, and a threaded head is fixedly provided at one end of the ball screw, and a top block is threadedly connected to the threaded head.

[0011] As can be seen, in the above technical solution, when the ball screw is displaced, the groove rubs against the ball spline nut to guide the ball screw during displacement, so as to ensure that the ball screw does not rotate when it extends and to ensure the stability of the ball screw during translation.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] By setting up support components, the overall design is simple and the structure is reasonable compared with the existing technology. Through the corresponding cooperation of various structures, when the motor body is connected to the power supply, the stator is energized and generates a magnetic field, which causes the rotor to rotate due to the magnetic field. The rotor and the ball screw are threadedly connected, which allows the ball screw to be displaced in the guide sleeve by the traction force when the rotor rotates, thereby allowing the ball screw to extend. This facilitates the output conversion when the rotor rotates and directly acts on the ball screw, ensuring its stability during displacement and also making its thrust greater.

[0014] Furthermore, when the ball screw is displaced, the groove rubs against the ball spline nut, thus guiding the ball screw's displacement to ensure that the ball screw does not rotate during extension and to ensure the stability of the ball screw during translation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0016] Figure 1 This is a front view of the overall structure of this utility model.

[0017] Figure 2 This is a perspective view of the end cap, ball screw, and bearing of this utility model.

[0018] Figure 3 This is a cross-sectional view of the motor body, guide sleeve, rotor, guide cylinder and stator of this utility model.

[0019] Figure 4 This is a side view of the end cap, ball screw, and bearing of this utility model.

[0020] Figure 5 This is a perspective view of the ball screw of this utility model.

[0021] The attached figures are labeled as follows: 1. Motor body; 2. Guide sleeve; 3. End cover; 4. Ball screw; 5. Stator; 6. Rotor; 7. Slide groove; 8. Ball spline nut; 9. Bearing; 10. Preload nut; 11. Threaded head; 12. Top block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] As attached Figure 1 - Figure 5 The ball screw spline motor shown has a support assembly on the motor body 1. The rotor 6 rotates due to the magnetic field. The rotor 6 and the ball screw 4 are threadedly connected, which allows the ball screw 4 to be displaced in the guide sleeve 2 by the traction force when the rotor 6 rotates. This allows the ball screw 4 to extend, making it easier for the output conversion when the rotor 6 rotates to directly act on the ball screw 4, ensuring its stability during displacement and making its thrust greater. The specific structure of the assembly is as follows.

[0024] The support assembly includes a guide sleeve 2 disposed at one end of the motor body 1, and an end cap 3 disposed between the motor body 1 and the guide sleeve 2;

[0025] A ball screw 4 is provided in the middle of the end cover 3. A stator 5 is embedded inside the motor body 1. A rotor 6 is rotatably connected to the middle of the stator 5. The rotor 6 is sleeved on the ball screw 4 and threadedly connected to the ball screw 4. Slide grooves 7 are provided on both sides of the surface of the ball screw 4. A ball spline nut 8 is embedded inside the guide sleeve 2. The ball spline nut 8 is sleeved on the ball screw 4 and slidably connected to the slide groove 7.

[0026] Bearings 9 are embedded in the middle of the end cover 3 and both ends of the motor body 1. The bearings 9 are sleeved on the outside of the rotor 6 and rotatably connected to the rotor 6. A preload nut 10 is provided at one end of the ball spline nut 8. The preload nut 10 is located at one end of the guide sleeve 2 and is threadedly connected to the guide sleeve 2. A threaded head 11 is fixedly provided at one end of the ball screw 4. A top block 12 is threadedly connected to the threaded head 11.

[0027] According to the above structure, when the motor body 1 is powered on, the stator 5 is energized and generates a magnetic field, which causes the rotor 6 to rotate due to the magnetic field. The rotor 6 and the ball screw 4 are threadedly connected, which allows the ball screw 4 to be displaced in the guide sleeve 2 by the traction force when the rotor 6 rotates. This allows the ball screw 4 to extend, making it easier for the output conversion when the rotor 6 rotates to directly act on the ball screw 4, ensuring its stability during displacement and also making its thrust greater.

[0028] Furthermore, when the ball screw 4 is displaced, the groove 7 rubs against the ball spline nut 8, thereby guiding the ball screw 4 during displacement to ensure that the ball screw 4 does not rotate during extension and to ensure the stability of the ball screw 4 during translation.

[0029] Unlike existing technologies, this application discloses a ball screw spline motor, in which the rotor 6 rotates due to the magnetic field. The rotor 6 and the ball screw 4 are threadedly connected, allowing the ball screw 4 to be displaced within the guide sleeve 2 by the traction force of the rotor 6 rotating. This allows the ball screw 4 to extend, making it easier for the output of the rotor 6 to be directly applied to the ball screw 4 when it rotates, ensuring its stability during displacement and also making its thrust greater.

[0030] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A ball screw spline motor, comprising a motor body (1), characterized in that: A support assembly is provided on the motor body (1); The support assembly includes a guide sleeve (2) disposed at one end of the motor body (1), and an end cap (3) is disposed between the motor body (1) and the guide sleeve (2). A ball screw (4) is provided in the middle of the end cover (3), a stator (5) is embedded inside the motor body (1), and a rotor (6) is rotatably connected in the middle of the stator (5). The rotor (6) is sleeved on the ball screw (4) and threadedly connected to the ball screw (4).

2. The ball screw spline motor according to claim 1, characterized in that: The ball screw (4) has grooves (7) on both sides of its surface, and a ball spline nut (8) is embedded inside the guide sleeve (2).

3. The ball screw spline motor according to claim 2, characterized in that: The ball spline nut (8) is sleeved on the ball screw (4), and the ball spline nut (8) is slidably connected to the groove (7).

4. The ball screw spline motor according to claim 1, characterized in that: Bearings (9) are embedded in the middle of the end cap (3) and at both ends of the motor body (1), and the bearings (9) are sleeved on the outside of the rotor (6) and rotatably connected to the rotor (6).

5. The ball screw spline motor according to claim 3, characterized in that: One end of the ball spline nut (8) is provided with a preload nut (10), which is located at one end of the guide sleeve (2) and threadedly connected to the guide sleeve (2).

6. The ball screw spline motor according to claim 1, characterized in that: One end of the ball screw (4) is fixedly provided with a threaded head (11), and a top block (12) is threadedly connected to the threaded head (11).

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