Wear-resistant ball screw

Abstract

The utility model discloses a wear-resistant ball screw which comprises a screw body, a movable sleeve and a steel ball are arranged on the screw body, an oil injection cavity is formed in the movable sleeve, an oil injection rod and an oil injection plate are arranged on the oil injection cavity in a sliding mode, an oil injection spring is arranged between the oil injection plate and the oil injection cavity, and one side of the oil injection cavity is provided with a lubricating cavity and a lubricating hole in a communicated mode. A cleaning sleeve is arranged on one side of the movable sleeve, a supporting sleeve, a supporting rod and a cleaning brush are arranged on the cleaning sleeve, a supporting piece and a supporting spring are arranged on the supporting rod, and an oil injection rod, an oil injection plate and an oil injection spring are arranged in an oil injection hole, so that lubricating oil in an oil injection cavity can conveniently lubricate steel balls through a lubricating cavity and a lubricating hole; the lubricating friction force between the steel ball and the lead screw body is reduced, the cleaning sleeve is installed on the movable sleeve through the installation sleeve and the pressing pad, and the supporting spring gives elastic force to the supporting rod, so that the cleaning brush abuts against the lead screw body, and impurities on threads on the lead screw body are cleaned.

Description

Technical Field

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

[0002] A ball screw is a mechanical transmission device that converts rotary motion into linear motion. It is widely used in various applications requiring precise linear positioning, such as CNC machine tools, automated production lines, and industrial robots. During the use of a ball screw assembly, the steel balls cause the nut to reciprocate on the screw, thus converting rotary motion into linear motion. However, after prolonged use, friction is generated between the steel balls and the screw in most ball screw assemblies, causing damage to the surfaces of both the steel balls and the screw. Generally, this is addressed by spraying softening oil onto the surfaces of the steel balls and the screw to reduce friction.

[0003] However, most existing ball screw assemblies require the softened oil to be delivered to the nut through an oil hole when spraying softened oil. If multiple lubrications are needed, the softened oil needs to be added to the nut multiple times, making it inconvenient to add softened oil to the nut. This makes the use of the ball screw assembly inconvenient. At the same time, if there are impurities in the softened oil during the addition process, it is very easy to clog the addition hole. The screw is exposed to the atmosphere, allowing dust to come into contact with the balls through the surface of the screw, increasing the friction between the balls and the screw, causing the screw to wear and develop gaps. There is also a lack of dust cleaning devices. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides a wear-resistant ball screw to solve the technical problems of inconvenient lubrication and cleaning of ball screws mentioned in the background art.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant ball screw, comprising a screw body, a movable sleeve and steel balls on the screw body, a wear-resistant mechanism on the screw body and the movable sleeve, an oil injection chamber on the movable sleeve, an oil injection rod slidably mounted on the oil injection chamber, an oil injection plate at one end of the oil injection rod, an oil injection spring between the oil injection plate and the oil injection chamber, a lubrication chamber connected to one side of the oil injection chamber, a plurality of lubrication holes at the bottom of the lubrication chamber, a cleaning sleeve on one side of the movable sleeve, a support sleeve on the cleaning sleeve, a support rod slidably mounted inside the support sleeve, a cleaning brush on the support rod, a support plate on the support rod, and a support spring between the support plate and the cleaning sleeve.

[0007] The present invention is further configured such that a filter screen cylinder is connected to one side of the oil injection chamber, and a feed hole is provided on one side of the filter screen cylinder, so that the injected lubricating oil can be easily filtered through the filter screen cylinder.

[0008] The present invention is further configured such that a feed sleeve is provided on one side of the feed hole, and a plug is threadedly connected to the feed sleeve to facilitate the injection of lubricating oil.

[0009] The present invention is further configured such that a first magnet is provided on the filter screen cylinder and a second magnet is provided on the movable sleeve, which facilitates the installation of the filter screen cylinder.

[0010] The present invention is further configured such that a mounting sleeve is provided on one side of the cleaning sleeve, and the mounting sleeve is threadedly connected to the outer surface of the movable sleeve. The mounting sleeve facilitates the installation and fixing of the cleaning sleeve and the movable sleeve.

[0011] The present invention is further provided with a clamping pad between the cleaning sleeve and the movable sleeve, thereby improving the tightness of the installation of the cleaning sleeve and the movable sleeve.

[0012] The present invention is further provided that the inside of the cleaning sleeve is fitted with lubricating cotton, which facilitates wiping and lubricating the surface of the lead screw body.

[0013] The present invention is further configured such that the wear-resistant mechanism includes a protective coating, a high-temperature resistant layer and a wear-resistant layer, thereby improving the wear resistance and high-temperature resistance of the moving sleeve and the lead screw body. Beneficial effects

[0014] Compared with the prior art, this utility model provides a wear-resistant ball screw, which has the following beneficial effects:

[0015] 1. By installing an oil injection rod, oil injection plate, and oil injection spring in the oil injection hole, the lubricating oil in the oil injection chamber can be easily used to lubricate the steel ball through the lubrication chamber and lubrication hole. This reduces the lubrication friction between the steel ball and the main body of the ball screw, improves the smoothness of movement and the wear resistance of the ball screw. By installing a filter screen, the injected lubricating oil can be easily filtered to prevent impurities in the lubricating oil from clogging the lubrication chamber and lubrication hole.

[0016] 2. Install the cleaning sleeve on the movable sleeve by installing the sleeve and clamping pad. The support rod is given elastic force by the support spring, so that the cleaning brush comes into contact with the screw body to clean the impurities on the threads of the screw body. The lubricating cotton on the cleaning sleeve is dipped in lubricating oil to wipe and lubricate the surface of the screw body.

[0017] 3. By applying a protective coating, a high-temperature resistant layer, and a wear-resistant layer to the lead screw body, the wear resistance and service life of the lead screw body are further improved. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of a wear-resistant ball screw according to the present invention;

[0019] Figure 2 for Figure 1 A magnified schematic diagram of a portion of the structure of A in the diagram;

[0020] Figure 3 for Figure 1 A magnified schematic diagram of a portion of the structure of B;

[0021] Figure 4 for Figure 1 A magnified schematic diagram of a local structure of C;

[0022] Figure 5 This is a schematic diagram of the structure of the protective coating, high-temperature resistant layer and wear-resistant layer in this utility model.

[0023] In the diagram: 1. Lead screw body; 2. Moving sleeve; 3. Steel ball; 4. Oil injection chamber; 5. Oil injection rod; 6. Oil injection plate; 7. Oil injection spring; 8. Lubrication chamber; 9. Lubrication hole; 10. Cleaning sleeve; 11. Support sleeve; 12. Support rod; 13. Cleaning brush; 14. Support plate; 15. Support spring; 16. Filter screen cylinder; 17. Feed hole; 18. Feed sleeve; 19. Plug; 20. First magnet; 21. Second magnet; 22. Mounting sleeve; 23. Pressure pad; 24. Lubricating cotton; 25. Protective coating; 26. High temperature resistant layer; 27. Wear-resistant layer. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0027] Please see Figure 1-5A wear-resistant ball screw includes a screw body 1, a movable sleeve 2 and steel balls 3 on the screw body 1, a wear-resistant mechanism on the screw body 1 and the movable sleeve 2, an oil injection chamber 4 on the movable sleeve 2, an oil injection rod 5 slidably mounted on the oil injection chamber 4, an oil injection plate 6 at one end of the oil injection rod 5, an oil injection spring 7 between the oil injection plate 6 and the oil injection chamber 4, a lubrication chamber 8 connected to one side of the oil injection chamber 4, a plurality of lubrication holes 9 at the bottom of the lubrication chamber 8, and a cleaning sleeve 10 on one side of the movable sleeve 2. The cleaning sleeve 10 is provided with a support sleeve 11, and a support rod 12 is slidably provided inside the support sleeve 11. A cleaning brush 13 is provided on the support rod 12, and a support plate 14 is provided on the support rod 12. A support spring 15 is provided between the support plate 14 and the cleaning sleeve 10. An installation sleeve 22 is provided on one side of the cleaning sleeve 10. The installation sleeve 22 is threadedly connected to the outer surface of the movable sleeve 2. A pressure pad 23 is provided between the cleaning sleeve 10 and the movable sleeve 2. Lubricating cotton 24 is attached to the inside of the installation sleeve 22.

[0028] In this embodiment, during use, the oil injection rod 5 and oil injection plate 6 in the oil injection chamber 4 compress the oil injection spring 7, giving the oil injection plate 6 a downward elastic force, thereby ensuring that the lubrication hole 9 is always filled with lubricating oil. The lubricating oil enters the movable sleeve 2 through the lubrication hole 9 to lubricate the steel ball 3, thereby improving the smoothness of the rotation of the steel ball 3. The cleaning sleeve 10 is installed on the movable sleeve 2 by the installation sleeve 22, and the thread engagement force between the installation sleeve 22 and the movable sleeve 2 is improved by the clamping pad 23, thereby making the cleaning sleeve 10 installed stably. The support spring 15 gives the support plate 14 a stable elastic force, thereby causing the support rod 12 and the cleaning brush 13 to abut against the lead screw body 1. When the lead screw body 1 rotates, the threads of the lead screw body 1 are cleaned by the cleaning brush 13. At the same time, the lubricating cotton 24 facilitates the wiping of the surface of the lead screw body 1, improving the surface lubrication of the lead screw body 1.

[0029] Please see Figure 3-5 As one embodiment of the filter cylinder 16: the filter cylinder 16 is connected to one side of the oil filling chamber 4, the filter cylinder 16 is provided with a feed hole 17 on one side, the feed hole 17 is provided with a feed sleeve 18 on one side, the feed sleeve 18 is threadedly connected with a plug 19, the filter cylinder 16 is provided with a first magnet 20, the movable sleeve 2 is provided with a second magnet 21, and the wear-resistant mechanism includes a protective coating 25, a high-temperature resistant layer 26 and a wear-resistant layer 27.

[0030] More specifically, when injecting oil into the oil injection chamber 4, the plug 19 is opened, and the oil injection rod 5 and oil injection plate 6 are pulled upwards. Oil is injected into the filter cylinder 16 through the feed sleeve 18. The lubricating oil is filtered through the filter cylinder 16, so that the lubricating oil is injected into the oil injection chamber 4 after filtration. After the oil injection is completed, the feed sleeve 18 is sealed again through the plug 19. When cleaning the filter cylinder 16, it is pulled upwards directly. After cleaning, the filter cylinder 16 is reinstalled on the moving sleeve 2 through the cooperation of the first magnet 20 and the second magnet 21. The wear-resistant layer 27 is a ceramic nano wear-resistant coating, and the high-temperature resistant layer 26 is a nano high-temperature resistant coating, which improves the wear resistance and high-temperature resistance of the moving sleeve 2 and the lead screw body 1.

[0031] In summary, during use or operation of the overall equipment: During use, the oil injection rod 5 and oil injection plate 6 in the oil injection chamber 4 compress the oil injection spring 7, giving the oil injection plate 6 a downward elastic force. This ensures that the lubrication hole 9 is always filled with lubricating oil. The lubricating oil enters the movable sleeve 2 through the lubrication hole 9 to lubricate the steel ball 3, thereby improving the smoothness of the steel ball 3's rotation. The cleaning sleeve 10 is installed on the movable sleeve 2 via the installation sleeve 22, and the clamping pad 23 increases the thread engagement force between the installation sleeve 22 and the movable sleeve 2, thus stabilizing the installation of the cleaning sleeve 10. The support spring 15 provides a stable elastic force to the support plate 14, causing the support rod 12 and the cleaning brush 13 to abut against the lead screw body 1. When the lead screw body 1 rotates, the cleaning brush 13 cleans the threads of the lead screw body 1. Simultaneously, the lubricating cotton 24 facilitates wiping the surface of the lead screw body 1, improving the surface lubrication of the lead screw body 1.

[0032] When injecting oil into the oil filling chamber 4, open the plug 19, pull the oil filling rod 5 and the oil filling plate 6 upward, and inject oil into the filter screen cylinder 16 through the feed sleeve 18. The filter screen cylinder 16 filters the lubricating oil, so that the lubricating oil is injected into the oil filling chamber 4 after filtration. After the oil filling is completed, the feed sleeve 18 is sealed again through the plug 19. When cleaning the filter screen cylinder 16, pull it directly upward. After cleaning, the filter screen cylinder 16 is reinstalled on the moving sleeve 2 by the cooperation of the first magnet 20 and the second magnet 21. The wear-resistant layer 27 is a ceramic nano wear-resistant coating, and the high-temperature resistant layer 26 is a nano high-temperature resistant coating, which improves the wear resistance and high-temperature resistance of the moving sleeve 2 and the lead screw body 1.

[0033] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant ball screw, comprising a screw body (1), wherein a movable sleeve (2) and steel balls (3) are provided on the screw body (1), and a wear-resistant mechanism is provided on the screw body (1) and the movable sleeve (2), characterized in that: The movable sleeve (2) is provided with an oil injection chamber (4), and an oil injection rod (5) is slidably provided on the oil injection chamber (4). An oil injection plate (6) is provided at one end of the oil injection rod (5). An oil injection spring (7) is provided between the oil injection plate (6) and the oil injection chamber (4). A lubrication chamber (8) is connected to one side of the oil injection chamber (4). A plurality of lubrication holes (9) are provided at the bottom of the lubrication chamber (8). A cleaning sleeve (10) is provided on one side of the movable sleeve (2). A support sleeve (11) is provided on the cleaning sleeve (10). A support rod (12) is slidably provided inside the support sleeve (11). A cleaning brush (13) is provided on the support rod (12). A support plate (14) is provided on the support rod (12). A support spring (15) is provided between the support plate (14) and the cleaning sleeve (10).

2. The wear-resistant ball screw according to claim 1, characterized in that: The oil injection chamber (4) is connected to a filter screen cylinder (16) on one side, and a feed hole (17) is provided on one side of the filter screen cylinder (16).

3. The wear-resistant ball screw according to claim 2, characterized in that: A feed sleeve (18) is provided on one side of the feed hole (17), and a plug (19) is threadedly connected to the feed sleeve (18).

4. The wear-resistant ball screw according to claim 3, characterized in that: The filter cylinder (16) is provided with a first magnet (20), and the movable sleeve (2) is provided with a second magnet (21).

5. The wear-resistant ball screw according to claim 1, characterized in that: The cleaning sleeve (10) has an installation sleeve (22) on one side, and the installation sleeve (22) is threadedly connected to the outer surface of the movable sleeve (2).

6. The wear-resistant ball screw according to claim 5, characterized in that: A clamping pad (23) is provided between the cleaning sleeve (10) and the movable sleeve (2).

7. The wear-resistant ball screw according to claim 1, characterized in that: The cleaning sleeve (10) is lined with lubricating cotton (24).

8. The wear-resistant ball screw according to claim 1, characterized in that: The wear-resistant structure includes a protective coating (25), a high-temperature resistant layer (26), and a wear-resistant layer (27).

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