High-precision dustproof ball screw

Abstract

The utility model belongs to the field of ball screw, especially a high accuracy dustproof ball screw, the operation of lubricating ball of existing lubricating ball is usually directly sprayed lubricating oil on the outside of screw rod, and cannot directly lubricate the ball, the contact and fusion of lubricating oil and dust on the screw rod can cause damage to the ball, at the same time, dust is easy to invade the inside of nut, adhere to the ball and raceway, cause blockage or wear, reduce the problem of transmission reliability, present the following scheme, it includes threaded rod and nut, the inside of nut has raceway and is matched with threaded rod raceway and is set on threaded rod, the inside of nut is provided with ball, the ejection of lubricating oil can be realized through pressing pressing pad, and the operation is simple and convenient, the dustproof assembly can effectively prevent dust from entering the inside of nut, avoid the wear and blockage of dust to the ball and raceway, ensure the normal operation of ball screw, improve the reliability and stability of ball screw.

Description

Technical Field

[0001] This utility model relates to the field of ball screw technology, and in particular to a high-precision dustproof ball screw. Background Technology

[0002] Ball screws are widely used in transmission systems. By rolling the balls between the threaded rod and the nut raceway, rotational motion is converted into linear motion. This structure reduces friction and improves transmission efficiency. They are widely used in various CNC machine tools, automated equipment, precision instruments and other fields, and are key components for achieving high-precision and high-efficiency motion control.

[0003] However, in practical use, traditional ball screws have some shortcomings. The operation of lubricating the balls usually involves spraying lubricating oil directly onto the outside of the screw, rather than directly lubricating the balls. When the lubricating oil comes into contact with and mixes with dust on the screw, it can damage the balls. At the same time, dust can easily penetrate into the nut and adhere to the balls and raceways, causing blockage or wear, reducing transmission reliability. These problems increase maintenance frequency and cost, and limit the long-term stability of ball screws in precision equipment. Therefore, a simpler lubrication method and effective dust prevention measures are needed to solve these shortcomings. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies where lubricating oil is typically sprayed directly onto the outside of the lead screw instead of directly lubricating the balls. This leads to damage to the balls when the lubricating oil comes into contact with and mixes with dust on the lead screw. Furthermore, dust can easily penetrate the nut and adhere to the balls and raceways, causing blockages or wear and reducing transmission reliability. Therefore, this invention proposes a high-precision dustproof ball screw.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high-precision dustproof ball screw includes a threaded rod and a nut. The nut has a raceway inside that matches the threaded raceway of the threaded rod and is sleeved on the threaded rod. Balls are disposed inside the nut. A lubrication mechanism is provided on the nut to facilitate lubrication of the balls. Mounting plates are fixedly connected to both sides of the nut to facilitate connection to equipment. Mounting holes are provided on both mounting plates. Dustproof components for dustproofing the nut are provided on the side of the two mounting plates that are far apart from each other.

[0007] In one possible design, the lubrication mechanism includes an oil box, a press-type nozzle, a press pad, a press block, and a connecting spring. The top of the nut has an oiling groove for lubricating the balls. The oil box is fixedly mounted on the top of the nut. The press-type nozzle is fixedly mounted on the bottom of the oil box and communicates with it. The bottom of the press-type nozzle extends into the oiling groove for lubricating the balls. A filling pipe for filling is fixedly mounted on the top of the oil box, and a pipe cap is provided at the top of the filling pipe. A circular hole is provided at the center of the top of the oil box. The press pad is fixedly mounted on the top of the oil box and covers the circular hole. The connecting spring is located inside the oil box, and its two ends abut against the bottom inner wall of the oil box and the press block respectively through spring seats. The press block is hemispherical in shape to facilitate lifting the press pad.

[0008] In one possible design, the dustproof assembly includes two side rings, two dustproof rings, and two threaded grooves. The two side rings are respectively fixedly disposed on the opposite side of the two mounting plates and sleeved on the threaded rod. The two dustproof rings are respectively fixedly disposed on the inner walls of the two side rings. The two threaded grooves are respectively disposed on the inner walls of the two dustproof rings and fit with the threaded rod. The two dustproof rings are both made of rubber and their inner walls are in contact with the outer side of the threaded rod.

[0009] In one possible design, side plates are fixedly connected to both sides of the two side rings, and each of the four side plates has a fixing hole to facilitate the fixing of the side rings to the mounting plate.

[0010] In one possible design, side plates are fixedly connected to both sides of the oil box, and each of the two side plates has a fixing hole for fixing the oil box to the nut.

[0011] In one possible design, the front side of the oil box is provided with an observation window to facilitate observation of the oil level inside the oil box, and a transparent glass is fixedly installed on the inner wall of the observation window.

[0012] In this application, the nut has a raceway inside that matches the thread raceway of the threaded rod. When the threaded rod rotates, the nut will move linearly along the axis of the threaded rod. This movement is based on the rolling of balls between the nut raceway and the threaded rod raceway. The rolling of the balls in the raceway transforms the sliding friction between the threaded rod and the nut into rolling friction, which greatly reduces the friction force, improves the transmission efficiency and accuracy, and enables the nut to move smoothly and accurately along the threaded rod.

[0013] The oil box stores lubricating oil. Lubricating oil can be added to the oil box through the filling tube. The cap at the top of the filling tube acts as a seal to prevent lubricating oil leakage. When the ball bearings need lubrication, press down on the pressing pad. The pressing pad presses down on the pressing block. Since the pressing block is hemispherical, it will move downwards under pressure, compressing the connecting spring at the same time. The pressing of the pressing pad will compress the air pressure in the oil box, thereby causing the lubricating oil to be sprayed out through the pressing nozzle and into the oiling groove at the top of the nut, thus lubricating the ball bearings. After releasing the pressing pad, the elasticity of the connecting spring will cause the pressing block to return to its original position, and the pressing pad will also return to its original shape, waiting for the next pressing operation.

[0014] Two side rings are fixed to the opposite sides of the two mounting plates and fitted onto the threaded rod. Two dustproof rings are fixed to the inner walls of the two side rings. Threaded grooves are set on the inner walls of the dustproof rings and fit into the threaded rod. The dustproof rings are made of rubber, which has good flexibility and sealing performance. Their inner walls fit tightly against the outer side of the threaded rod. When the nut moves along the threaded rod, the dustproof rings move with the side rings, always maintaining a tight fit with the threaded rod, thus effectively preventing dust from entering the nut and avoiding dust from causing wear on the balls and raceways, which would affect the performance of the ball screw.

[0015] The beneficial effects of this utility model are as follows:

[0016] In this invention, the lubrication mechanism can conveniently and promptly lubricate the balls. The lubricating oil can be sprayed out by pressing the pressing pad, making the operation simple and convenient. The observation window allows the operator to monitor the oil level in the oil box at any time. When the oil level is insufficient, lubricating oil can be added in time to ensure that the balls are in a good lubricated state, extend the service life of the ball screw, and reduce maintenance costs.

[0017] The dustproof component effectively prevents dust from entering the nut, avoiding wear and blockage of the balls and raceways, ensuring the normal operation of the ball screw. The rubber dustproof ring has good sealing and flexibility, adapting to the rotation of the threaded rod and the movement of the nut, always maintaining a tight fit, further improving the dustproof effect and enhancing the reliability and stability of the ball screw. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the dustproof structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the lubrication structure of this utility model;

[0021] Figure 4 This is a cross-sectional view of the lubrication structure of this utility model.

[0022] In the diagram: 1. Threaded rod; 2. Nut; 3. Mounting plate; 4. Side ring; 5. Oil box; 6. Observation window; 7. Dustproof ring; 8. Threaded groove; 9. Side plate one; 10. Side plate two; 11. Press-type nozzle; 12. Pressing pad; 13. Liquid filling pipe; 14. Pressing block; 15. Connecting spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In one embodiment: Refer to Figures 1-4 A high-precision dustproof ball screw includes a threaded rod 1 and a nut 2. The nut 2 has a raceway inside that matches the threaded raceway of the threaded rod 1 and is fitted onto the threaded rod 1. Balls are also placed inside the nut 2. The nut 2 is equipped with a lubrication mechanism for lubricating the balls. Mounting plates 3 are fixedly connected to both sides of the nut 2. Mounting plates 3 have mounting holes for easy connection to equipment. On the side of the two mounting plates 3 that are far apart, a dustproof component is also provided to prevent dust from entering and affecting the performance of the ball screw.

[0025] The lubrication mechanism includes an oil box 5, a press-type nozzle 11, a press pad 12, a press block 14, and a connecting spring 15. The top of the nut 2 has an oil filling groove. The oil box 5 is fixed to the top of the nut 2. The press-type nozzle 11 is fixed to the bottom of the oil box 5 and communicates with the oil box 5. Its bottom extends into the oil filling groove for lubricating the ball bearings. The top of the oil box 5 has a liquid filling pipe 13 with a cap at the top for easy addition of lubricating oil. A round hole is opened at the center of the top of the oil box 5. The press pad 12 is fixed to the top of the oil box 5 and covers the round hole. The connecting spring 15 is located inside the oil box 5. Its two ends abut against the inner wall of the bottom of the oil box 5 and the press block 14 through spring seats. The press block 14 is hemispherical in shape to facilitate lifting the press pad 12 for subsequent pressing to spray out the lubricating oil.

[0026] The dustproof assembly includes two side rings 4, two dustproof rings 7, and two threaded grooves 8. The two side rings 4 are respectively fixed on the opposite sides of the two mounting plates 3 and fitted onto the threaded rod 1. The two dustproof rings 7 are respectively fixed on the inner walls of the two side rings 4. The threaded grooves 8 are set on the inner walls of the dustproof rings 7 and fit with the threaded rod 1. The dustproof rings 7 are made of rubber and their inner walls fit tightly against the outer side of the threaded rod 1, effectively preventing dust from entering.

[0027] This application can be used in the field of ball screws, or in other fields applicable to this application.

[0028] In another embodiment: Reference Figures 1-4 A high-precision dustproof ball screw, comprising:

[0029] To facilitate the fixing of the side ring 4 and the mounting plate 3, side plates 9 are fixedly connected to both sides of the two side rings 4. The side plates 9 have fixing holes, and the side rings 4 and the mounting plate 3 can be connected by bolts or other fasteners.

[0030] The oil box 5 is fixed in a similar way to the nut 2. Both sides of the oil box 5 are fixedly connected to side plates 10. The side plates 10 have fixing holes 2. The oil box 5 can be firmly fixed to the top of the nut 2 by bolts and other fasteners.

[0031] To facilitate observation of the oil level inside the oil box 5, an observation window 6 is provided on the front side of the oil box 5. A transparent glass is fixed on the inner wall of the observation window 6. The oil level inside the oil box 5 can be observed at any time through the observation window 6 so that lubricating oil can be added in a timely manner.

[0032] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-precision dustproof ball screw, characterized in that, The device includes a threaded rod (1) and a nut (2). The nut (2) has a raceway inside that matches the thread raceway of the threaded rod (1) and is fitted onto the threaded rod (1). The nut (2) has balls inside and a lubrication mechanism for lubricating the balls. Mounting plates (3) are fixedly connected to both sides of the nut (2) to facilitate the connection of the device. Mounting holes are provided on both mounting plates (3). Dustproof components for dustproofing the nut (2) are provided on the side of the two mounting plates (3) that are far apart from each other.

2. The high-precision dustproof ball screw according to claim 1, characterized in that, The lubrication mechanism includes an oil box (5), a press-type nozzle (11), a press pad (12), a press block (14), and a connecting spring (15). The top of the nut (2) has an oiling groove for lubricating the balls. The oil box (5) is fixedly mounted on the top of the nut (2). The press-type nozzle (11) is fixedly mounted on the bottom of the oil box (5) and communicates with it. The bottom of the press-type nozzle (11) extends into the oiling groove to lubricate the balls. The top of the oil box (5)... The oil box (5) is fixedly provided with a filling pipe (13) for refueling. The top of the filling pipe (13) is provided with a pipe cap. A round hole is opened at the center of the top of the oil box (5). The pressing pad (12) is fixedly provided on the top of the oil box (5) and covers the round hole. The connecting spring (15) is located inside the oil box (5) and its two ends are respectively abutted against the bottom inner wall of the oil box (5) and the pressing block (14) through spring seats. The pressing block (14) is set in a hemispherical shape to facilitate lifting the pressing pad (12).

3. The high-precision dustproof ball screw according to claim 1, characterized in that, The dustproof assembly includes two side rings (4), two dustproof rings (7) and two threaded grooves (8). The two side rings (4) are respectively fixed on the opposite side of the two mounting plates (3) and sleeved on the threaded rod (1). The two dustproof rings (7) are respectively fixed on the inner wall of the two side rings (4). The two threaded grooves (8) are respectively set on the inner wall of the two dustproof rings (7) and fit with the threaded rod (1). The material of the two dustproof rings (7) is rubber and the inner wall is in contact with the outer side of the threaded rod (1).

4. A high-precision dustproof ball screw according to claim 3, characterized in that, Both sides of the two side rings (4) are fixedly connected to side plates (9), and each of the four side plates (9) has a fixing hole for fixing the side rings (4) to the mounting plate (3).

5. A high-precision dustproof ball screw according to claim 2, characterized in that, Both sides of the oil box (5) are fixedly connected to side plates (10), and both side plates (10) are provided with fixing holes to facilitate the fixing of the oil box (5) and the nut (2).

6. A high-precision dustproof ball screw according to claim 2, characterized in that, The oil box (5) has an observation window (6) on its front side for easy observation of the oil level inside the oil box (5), and a transparent glass is fixedly installed on the inner wall of the observation window (6).

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