Ball screw

Abstract

The utility model relates to the technical field of ball screws, and discloses a ball screw which comprises a threaded screw, the outer surface of the threaded screw is in threaded connection with a nut, a ball body is arranged between the threaded screw and the nut, the side wall of the nut is fixedly connected with a fixing ring, a connecting block is inserted into the fixing ring, and the connecting block is fixedly connected with the threaded screw. And a positioning assembly is arranged in the connecting block, a lubricating pad is fixedly connected to the inner side wall of the fixing ring, a lubricating tank is fixedly connected to the interior of the fixing ring, and a pushing mechanism is slidably connected to the top of the lubricating tank. According to the ball screw, by arranging the lubricating roller, the push rod, the reset spring, the push plate and the lubricating pad, the lubricating effect on the threaded screw and the ball is achieved, the situation that the screw and the ball are subjected to friction damage in the long-time using process is avoided, the safety of the screw and the ball in the working process is improved, and the service life of the ball screw is prolonged.

Description

Technical Field

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

[0002] Ball screws are the most commonly used transmission components in machine tools and precision machinery. Their main function is to convert rotary motion into linear motion or torque into axial reciprocating force, while also featuring high precision, reversibility, and high efficiency.

[0003] The existing technology has the following drawbacks: during long-term use, the surface of the balls and the inner wall of the screw rub against each other, causing damage to both and reducing the service life of the ball screw. Therefore, a new ball screw is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a ball screw, which aims to improve the problem of wear between the outer surface of the ball and the inside of the screw in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a ball screw, including a threaded screw, a nut threadedly connected to the outer surface of the threaded screw, a ball body disposed between the threaded screw and the nut, a fixing ring fixedly connected to the side wall of the nut, a connecting block inserted into the inside of the fixing ring, a positioning component disposed inside the connecting block, a lubricating pad fixedly connected to the inner side wall of the fixing ring, a lubricating can fixedly connected to the inside of the fixing ring, and a pushing mechanism slidably connected to the top of the lubricating can;

[0006] The pushing mechanism includes a push rod, which is piston-connected to the top of the lubricating tank. The push rod is elastically connected to the outer surface of the fixed ring via a return spring, and a push plate is fixedly connected to the bottom of the push rod.

[0007] As a further description of the above technical solution:

[0008] The positioning component includes a positioning block, which is slidably connected inside the connecting block. The sidewall of the positioning block is elastically connected to the connecting block via a positioning spring. A moving rod is fixedly connected to the sidewall of the positioning block, and a cleaning ring is fixedly connected to the bottom of the connecting block.

[0009] As a further description of the above technical solution:

[0010] The inner wall of the lubricating pad is in contact with the outer surface of the threaded screw, and the outer surface of the lubricating pad is connected to the bottom of the lubrication tank through a connecting pipe.

[0011] As a further description of the above technical solution:

[0012] The push rod is slidably connected inside the fixed ring, and the push plate is slidably connected inside the lubrication tank.

[0013] As a further description of the above technical solution:

[0014] The side wall of the push rod is fixedly connected to one end of the return spring, and the other end of the return spring is fixedly connected to the outer surface of the fixed ring.

[0015] As a further description of the above technical solution:

[0016] The positioning block is inserted inside the fixed ring, and the moving rod passes through and is slidably connected inside the connecting block.

[0017] As a further description of the above technical solution:

[0018] The inner wall of the cleaning ring is provided with a cleaning pad, and the inner wall of the cleaning pad is in contact with the outer surface of the threaded screw.

[0019] As a further description of the above technical solution:

[0020] The side wall of the positioning block is fixedly connected to one end of the positioning spring, and the other end of the positioning spring is fixedly connected to the inner side wall of the fixing ring.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the lubrication roller, push rod, return spring, push plate and lubrication pad are provided to achieve the lubrication effect on the screw and ball, avoid friction damage to the screw and ball during long-term use, improve the safety of the screw and ball during operation, and extend the service life of the ball screw.

[0023] 2. In this utility model, the setting of a fixed ring, a cleaning ring, a connecting block, a positioning block, a moving rod, and a positioning spring satisfies the effect of disassembling and replacing the cleaning tube, avoids the ball screw from getting stuck during movement due to dust particles remaining on the surface, and improves the smoothness of the ball screw during operation. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the threaded screw and nut of a ball screw proposed in this utility model.

[0025] Figure 2 This is a cross-sectional view of a nut for a ball screw proposed in this utility model;

[0026] Figure 3This is an exploded structural diagram of the retaining ring and cleaning ring of a ball screw proposed in this utility model;

[0027] Figure 4 This utility model proposes a ball screw... Figure 3 Enlarged schematic diagram of the internal structure of part A in the middle.

[0028] Legend:

[0029] 1. Lead screw; 2. Nut; 3. Ball bearing body; 4. Positioning assembly; 41. Positioning block; 42. Moving rod; 43. Positioning spring; 5. Fixing ring; 6. Pushing mechanism; 61. Push rod; 62. Return spring; 63. Push plate; 7. Lubricating pad; 8. Cleaning ring; 9. Connecting block; 10. Lubricating tank. Detailed Implementation

[0030] 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.

[0031] Reference Figures 1-3 This utility model provides an embodiment of a ball screw, including a threaded screw 1, a nut 2 threadedly connected to the outer surface of the threaded screw 1, a ball body 3 disposed between the threaded screw 1 and the nut 2, the threaded screw 1 having a helical raceway, and the nut 2 also having a corresponding raceway. When the threaded screw 1 and the nut 2 rotate relative to each other, due to the action of the helix, the nut 2 will generate linear motion along the axis of the screw. A fixing ring 5 is fixedly connected to the side wall of the nut 2, a connecting block 9 is inserted into the inside of the fixing ring 5, and a positioning component 4 is disposed inside the connecting block 9. The inner side wall of the fixing ring 5 is fixed. A lubricating pad 7 is connected, and the inner wall of the lubricating pad 7 is in contact with the outer surface of the threaded screw 1. The lubricating pad 7 is supported by a sponge and absorbs the lubricating fluid. The lubricating pad 7, which absorbs the lubricating fluid, lubricates the outer surface of the threaded screw 1. A lubricating tank 10 is fixedly connected inside the fixing ring 5. The outer surface of the lubricating pad 7 is connected to the bottom of the lubricating tank 10 through a connecting pipe. The lubricating tank 10 is used to place the lubricating fluid. The connecting pipe is used to transport the lubricating fluid inside the lubricating tank 10 to the inside of the lubricating pad 7. A pushing mechanism 6 is slidably connected to the top of the lubricating tank 10.

[0032] Reference Figures 1-3The pushing mechanism 6 includes a push rod 61, which is piston-connected to the top of the lubrication tank 10. The push rod 61 is slidably connected inside the fixed ring 5. Pushing the push rod 61 causes it to slide within the fixed ring 5 and the lubrication tank 10. The push rod 61 is elastically connected to the outer surface of the fixed ring 5 via a return spring 62. The side wall of the push rod 61 is fixedly connected to one end of the return spring 62, and the other end of the return spring 62 is fixedly connected to the outer surface of the fixed ring 5. During the pushing process, the push rod 61 compresses the return spring 62, causing it to deform. During reset, the return spring 62 rebounds, causing the push rod 61 to rebound and reset. A push plate 63 is fixedly connected to the bottom of the push rod 61 and slidably connected inside the lubrication tank 10. The push rod 61 then drives the push plate 63 to slide stably within the lubrication tank 10.

[0033] Reference Figures 2-4 The positioning component 4 includes a positioning block 41, which is slidably connected inside the connecting block 9 and inserted into the fixing ring 5. A moving rod 42 is fixedly connected to the side wall of the positioning block 41, passing through and slidably connected inside the connecting block 9. The fixing ring 5 has a connecting groove that matches the size of the connecting block 9, and a positioning hole is formed on the side wall of the connecting groove. By inserting the positioning block 41 into the positioning hole, the stability of the connection between the connecting block 9 and the fixing ring 5 is improved. The side wall of the positioning block 41 is elastically connected to the connecting block 9 through a positioning spring 43. One end of the spring 43 is fixedly connected, and the other end of the positioning spring 43 is fixedly connected to the inner wall of the fixed ring 5. After pushing the moving rod 42, the positioning block 41 is driven to squeeze the positioning spring 43, causing the positioning spring 43 to deform. When resetting, the rebound of the positioning spring 43 drives the positioning block 41 to slide and reset. The bottom of the connecting block 9 is fixedly connected to the cleaning ring 8. The inner wall of the cleaning ring 8 is provided with a cleaning pad. The inner wall of the cleaning pad is in contact with the outer surface of the threaded screw 1. During the movement of the connecting block 9, the cleaning ring 8 is driven to slide on the outer surface of the threaded screw 1, and the cleaning pad is used to clean the outer surface of the threaded screw 1.

[0034] Working principle: During use, the nut 2 rotates on the outer surface of the threaded screw 1, which drives the fixed ring 5 to move. The movement of the fixed ring 5 drives the cleaning ring 8 to move. The cleaning ring 8 cleans the outer surface of the threaded screw 1. When the cleaning ring 8 is damaged after long-term use and needs to be replaced, the moving rod 42 is pushed to drive the positioning block 41 to squeeze the positioning spring 43 and enter the interior of the connecting block 9. Then the connecting block 9 and the cleaning ring 8 are removed from the interior of the fixed ring 5, which satisfies the effect of disassembling and replacing the cleaning ring 8.

[0035] Meanwhile, when the threaded screw 1, nut 2, and ball body 3 generate friction during long-term operation, the operator pushes the push rod 61 to compress the reset spring 62, which in turn drives the push plate 63 to slide inside the lubrication tank 10. During the sliding process, the push plate 63 pushes the lubricant inside the lubrication tank 10 out of the through hole at the bottom and pushes it into the lubrication pad 7. Then, the lubrication pad 7 contacts the threaded screw 1 and the ball body 3 to achieve a lubrication effect, thereby improving the lubrication effect and service life between the threaded screw 1 and the ball body 3.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ball screw comprising a threaded screw (1), characterized in that: The outer surface of the threaded screw rod (1) is connected with the nut (2), the threaded screw rod (1) and the nut (2) are provided with the ball body (3), the side wall of the nut (2) is fixedly connected with the fixed ring (5), the inside of the fixed ring (5) is inserted with the connecting block (9), the inside of the connecting block (9) is provided with the positioning assembly (4), the inner side wall of the fixed ring (5) is fixedly connected with the lubricating pad (7), the inside of the fixed ring (5) is fixedly connected with the lubricating tank (10), the top of the lubricating tank (10) is slidingly connected with the pushing mechanism (6). The pushing mechanism (6) comprises a push rod (61), the push rod (61) is connected to the top of the lubricating tank (10), the push rod (61) is elastically connected with the outer surface of the fixed ring (5) through the return spring (62), the bottom of the push rod (61) is fixedly connected with the push plate (63).

2. A ball screw according to claim 1, characterized in that: The positioning assembly (4) comprises a positioning block (41), the positioning block (41) is slidingly connected in the inside of the connecting block (9), the side wall of the positioning block (41) is elastically connected with the connecting block (9) through the positioning spring (43), the side wall of the positioning block (41) is fixedly connected with the moving rod (42), the bottom of the connecting block (9) is fixedly connected with the cleaning ring (8).

3. The ball screw of claim 1, wherein: The inner side wall of the lubricating pad (7) is in contact with the outer surface of the threaded screw rod (1), the outer surface of the lubricating pad (7) is connected with the bottom of the lubricating tank (10) through the connecting pipe.

4. The ball screw of claim 1, wherein: The push rod (61) is slidingly connected in the inside of the fixed ring (5), the push plate (63) is slidingly connected in the inside of the lubricating tank (10).

5. The ball screw of claim 1, wherein: The side wall of the push rod (61) is fixedly connected with one end of the return spring (62), the other end of the return spring (62) is fixedly connected with the outer surface of the fixed ring (5).

6. The ball screw of claim 2, wherein: The positioning block (41) is inserted in the inside of the fixed ring (5), the moving rod (42) penetrates and is slidingly connected in the inside of the connecting block (9).

7. The ball screw of claim 2, wherein: The inner side wall of the cleaning ring (8) is provided with a cleaning pad, the inner side wall of the cleaning pad is in contact with the outer surface of the threaded screw rod (1).

8. The ball screw of claim 2, wherein: The side wall of the positioning block (41) is fixedly connected with one end of the positioning spring (43), the other end of the positioning spring (43) is fixedly connected with the inner side wall of the fixed ring (5).

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