Mute noise reduction transmission structure of ball screw

Abstract

The utility model relates to the technical field of ball screws, and discloses a ball screw mute noise reduction transmission structure which comprises a screw rod, a nut is arranged on the outer wall of the screw rod, a ball is arranged in the nut, a connecting flange is arranged on the outer wall of the nut, a sound insulation circular ring is connected in the nut in a sliding mode, and a fixed shell is fixedly connected to the outer wall of the nut. A rotating rod is rotatably connected to the interior of the fixing shell, a first fixing column is fixedly connected to the interior of the fixing shell, the outer wall of the first fixing column is sleeved with a first spring, and the lower surface of the first spring is fixedly connected to the interior of the fixing shell. According to the sound insulation device, the clamping blocks, the limiting grooves, the fixing columns, the springs and other structures are linked, the sound insulation circular ring is fixed, noise generated inside can be isolated, the influence on personnel is reduced, the problem that the balls rotate on the outer wall of the lead screw to generate noise is solved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball screws, in particular to a silent and noise-reducing transmission structure for ball screws. Background Art

[0002] A screw rod is a common mechanical transmission component, usually composed of a screw and a nut. Its main function is to convert rotational motion into linear motion, or convert linear motion into rotational motion, and is widely used in various mechanical equipment, such as machine tools, automated production lines, aerospace and other fields. Its performance directly affects the accuracy, efficiency and reliability of the equipment. Compared with traditional screw rods, ball screws are now mostly used, which can achieve more precise linear motion, higher transmission efficiency and stronger load-bearing capacity.

[0003] A traditional ball screw is usually composed of a screw, a nut and balls. Its main function is to convert rotational motion into linear motion, and has the advantages of high precision, high efficiency, high rigidity, etc. When the screw rotates, the balls roll in the nut, thereby driving the nut to move axially along the screw. Since the contact between the balls and the screw and the nut is point contact, the friction force is small and the transmission efficiency is high. It is widely used in various mechanical equipment, such as machine tools, automated production lines, printing equipment, medical equipment, etc. Its performance directly affects the accuracy, speed and reliability of the equipment.

[0004] However, for a traditional ball screw, during operation, due to its working principle and structural characteristics, when the balls roll between the screw and the nut, certain friction and collision will occur, thus generating noise. In addition, factors such as the rotation speed of the screw, the load size and the lubrication condition of the screw will also affect the noise. Although this noise is usually within an acceptable range, in some occasions with high noise requirements, some measures may be needed to reduce the noise. Therefore, a silent and noise-reducing transmission structure for ball screws is proposed to solve the above problems. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a silent and noise-reducing transmission structure for ball screws, aiming to improve the problem of noise generated by friction between the balls and the nut in the screw in the prior art.

[0006] To achieve the above-mentioned purpose, the ball screw silent noise reduction transmission structure provided by the embodiment of the utility model includes a screw, a nut is provided on the outer wall of the screw, a ball is provided inside the nut, a connecting flange is provided on the outer wall of the nut, a sound insulation ring is slidably connected inside the nut, a fixed shell is fixedly connected to the outer wall of the nut, a rotating rod is rotatably connected inside the fixed shell, a fixed column 1 is fixedly connected inside the fixed shell, a spring 1 is sleeved on the outer wall of the fixed column 1, a lower surface of the spring is fixedly connected to the inside of the fixed shell, a lifting plate is fixedly connected to the upper surface of the spring 1, a limiting groove is opened inside the lifting plate, one side of the rotating rod is slidably connected to the inside of the limiting groove, a card block is fixedly connected to the upper surface of the lifting plate, the outer wall of the card block is slidably connected to the inside of the sound insulation ring, and a switch assembly is provided on the outer wall of the lifting plate, and the switch assembly acts to switch the card block.

[0007] Optionally, the switch assembly includes a button, and the outer wall of the button is fixedly connected to the outer wall of the lifting plate;

[0008] Optionally, an oil filling port is provided inside the nut, and an oil filling channel is provided inside the nut;

[0009] Optionally, a connecting plate is fixedly connected inside the oil filling channel, and a connecting shell is fixedly connected to the upper surface of the connecting plate;

[0010] Optionally, a second fixing column is fixedly connected inside the connection shell, and a limiting block is fixedly connected to the top of the second fixing column;

[0011] Optionally, a second spring is sleeved on the outer wall of the second fixing column, the bottom end of the second spring is fixedly connected to the inside of the connecting shell, and the top end of the second spring is fixedly connected to a lifting column;

[0012] Optionally, the outer wall of the lifting column is slidably connected to the inside of the connecting shell, and the inside of the lifting column is slidably connected to the outer wall of the limiting block;

[0013] Optionally, a conical block is fixedly connected to the top of the lifting column, a rubber plug is fixedly connected to the top of the conical block, and an outer wall of the rubber plug is slidably connected to the inside of the oil filling port.

[0014] The above one or more technical solutions in the ball screw silent noise reduction transmission structure provided by the embodiment of the utility model have at least one of the following technical effects:

[0015] 1. In the utility model, the card block realizes its moving function by moving the lifting plate. When the lifting plate is moved, the limiting groove, the fixing column, the spring and other structures will be linked accordingly to fix the sound insulation ring, which can isolate the noise generated inside and reduce the impact on personnel, solve the problem of noise generated by the ball rotating on the outer wall of the screw, and improve work efficiency.

[0016] 2. In the present utility model, the rubber plug realizes its lifting function by pressing it. When it is pressed, structures such as the spring, fixed column, and lifting column will be linked accordingly to open the oil injection port, add lubricant to the ball inside the nut, reduce friction and wear, solve the problem of easy wear caused by too long service time, and improve its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a three-dimensional schematic diagram of the ball screw silent and noise-reducing transmission structure proposed by the present utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the ball of the ball screw silent and noise-reducing transmission structure proposed by the present utility model;

[0020] Figure 3 It is a schematic diagram of the internal structure of the fixed housing of the ball screw silent and noise-reducing transmission structure proposed by the present utility model;

[0021] Figure 4 It is a schematic diagram of the internal structure of the connection housing of the ball screw silent and noise-reducing transmission structure proposed by the present utility model.

[0022] Among them, the reference numerals in the drawings are as follows:

[0023] 1. Lead screw; 2. Sound insulation ring; 3. Nut; 4. Oil injection port; 5. Connection flange; 6. Button; 7. Connection housing; 8. Oil injection channel; 9. Ball; 10. Fixed housing; 11. Lifting plate; 12. Restriction groove; 13. Block; 14. Fixed column 1; 15. Spring 1; 16. Rotating rod; 17. Spring 2; 18. Lifting column; 19. Rubber plug; 20. Restriction block; 21. Fixed column 2; 22. Connection plate; 23. Tapered block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the embodiments of the present utility model, and should not be construed as a limitation to the present utility model.

[0025] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0027] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0028] Referring to Figures 1 - 3 , an embodiment provided by the present utility model: a ball screw silent noise reduction transmission structure, including a screw rod 1, a nut 3 is arranged on the outer wall of the screw rod 1, balls 9 are arranged inside the nut 3, a connection flange 5 is arranged on the outer wall of the nut 3, a sound insulation ring 2 is slidably connected inside the nut 3, a fixed housing 10 is fixedly connected to the outer wall of the nut 3, a rotating rod 16 is rotatably connected inside the fixed housing 10, a first fixed column 14 is fixedly connected inside the fixed housing 10, a first spring 15 is sleeved on the outer wall of the first fixed column 14, the lower surface of the first spring 15 is fixedly connected inside the fixed housing 10, the upper surface of the first spring 15 is fixedly connected to a lifting plate 11, a limiting groove 12 is opened inside the lifting plate 11, one side of the rotating rod 16 is slidably connected inside the limiting groove 12, a clamping block 13 is fixedly connected to the upper surface of the lifting plate 11, the outer wall of the clamping block 13 is slidably connected inside the sound insulation ring 2, and a switch assembly is arranged on the outer wall of the lifting plate 11, and the switch assembly acts to switch the clamping block 13.

[0029] Specifically, after pushing the lifting plate 11, the limiting groove 12 opened inside is driven to descend. Then, the limiting groove 12 drives the rotating rod 16 to rotate until the top of the rotating rod 16 reaches the top of the limiting groove 12 and is fixed thereto. At the same time, the descent of the lifting plate 11 compresses the first spring 15 and drives the clamping block 13 to descend. Then, the sound insulation ring 2 is slid into the nut 3. Press the button 6 again, and the lifting plate 11 will descend again, causing the top of the rotating rod 16 to slide to the upper right corner of the limiting groove 12. After that, through the rebound of the first spring 15, the lifting plate 11 will return to its original position, and the top of the rotating rod 16 will slide to the bottom of the limiting groove 12 to fix it, and drive the clamping block 13 to slide into the sound insulation ring 2, thereby fixing the sound insulation ring 2, effectively reducing noise near the noise source, being able to precisely reduce the noise generated by the friction and collision between the nut 3 and the lead screw 1 during the operation of the lead screw 1, greatly improving the noise reduction effect, and without the need for complex tools and cumbersome installation processes, being able to quickly fix the sound insulation ring 2 inside the nut 3, and at the same time not having an adverse impact on the normal operation of the device.

[0030] Refer to Figure 1 and Figure 2 The switch assembly includes a button 6, and the outer wall of the button 6 is fixedly connected to the outer wall of the lifting plate 11.

[0031] Specifically, the lifting plate 11 is lifted and lowered conveniently through the button 6. Just press the button 6, and the lifting and lowering operation of the lifting plate 11 can be easily achieved, improving the operation efficiency, reducing the cumbersome operation steps, and being able to precisely control the lifting and lowering height of the lifting plate 11 as needed.

[0032] Refer to Figure 1 、 Figure 2 and Figure 3 In the nut 3, an oil injection port 4 is opened, an oil injection channel 8 is opened in the nut 3, a connecting plate 22 is fixedly connected inside the oil injection channel 8, a connecting housing 7 is fixedly connected to the upper surface of the connecting plate 22, a second fixing column 21 is fixedly connected inside the connecting housing 7, a limiting block 20 is fixedly connected to the top end of the second fixing column 21, a second spring 17 is sleeved on the outer wall of the second fixing column 21, the bottom end of the second spring 17 is fixedly connected inside the connecting housing 7, the top end of the second spring 17 is fixedly connected to a lifting column 18, the outer wall of the lifting column 18 is slidably connected inside the connecting housing 7, the inside of the lifting column 18 is slidably connected to the outer wall of the limiting block 20, a conical block 23 is fixedly connected to the top of the lifting column 18, a rubber plug 19 is fixedly connected to the top of the conical block 23, and the outer wall of the rubber plug 19 is slidably connected inside the oil injection port 4.

[0033] Specifically, when there is a certain sense of blockage after long-term use, place the lubricant port on top of the oil filling port 4 and then compress it inward. Such an operation will drive the rubber plug 19 to descend inside the oil filling port 4. Then, with the descent of the rubber plug 19, the conical block 23 will also descend. Subsequently, the descent of the conical block 23 will drive the lifting column 18 to descend inside the second spring 17 and compress the second spring 17. In this way, the oil injection channel 8 can be opened to extrude the lubricant inside. After the injection is completed, the rubber plug 19 will return to its original position by the rebound of the second spring 17 to close the oil filling port 4, accurately controlling the inflow direction and flow rate of the lubricant, enabling the lubricant to accurately reach the key lubricated parts inside the nut 3. And when not added, the tight closure of the one-way valve can prevent the intrusion of foreign objects such as dust, impurities, and moisture, ensuring that the working environment of the nut 3 always remains relatively clean.

[0034] Working principle: Press the button 6, which drives the lifting plate 11 to move up and down inside the fixed housing 10. Then, the limiting groove 12 opened inside is driven to descend by the lifting plate 11. Subsequently, the rotating rod 16 is driven to rotate by the limiting groove 12 until it reaches the top of the limiting groove 12 and is fixed to it. At the same time, the first spring 15 is compressed by the descent of the lifting plate 11, and the clamping block 13 is driven to descend. Then, the sound insulation ring 2 is slid into the nut 3. Then, press the button 6 again to drive the lifting plate 11 to descend again, causing the top of the rotating rod 16 to slide to the upper right corner of the limiting groove 12. After that, the lifting plate 11 returns to its original position by the rebound of the first spring 15, causing the top of the rotating rod 16 to slide to the bottom of the limiting groove 12 to fix it, and driving the clamping block 13 to slide into the sound insulation ring 2 to fix the sound insulation ring 2. When there is a certain sense of blockage after long-term use, place the lubricant port on top of the oil filling port 4 and compress it inward, thereby driving the rubber plug 19 to descend inside the oil filling port 4. Then, the conical block 23 is driven to descend by the rubber plug 19. Subsequently, the lifting column 18 is driven to descend inside the second spring 17 and compress the second spring 17, thereby opening the oil injection channel 8 to extrude the lubricant inside. After the injection is completed, the rubber plug 19 returns to its original position by the rebound of the second spring 17 to close the oil filling port 4 and prevent foreign objects from entering.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Ball screw silent noise reduction drive structure, including a lead screw (1), characterized in that: A nut (3) is provided on the outer wall of the lead screw (1). Ball bearings (9) are provided inside the nut (3). A connecting flange (5) is provided on the outer wall of the nut (3). A sound insulation ring (2) is slidably connected inside the nut (3). A fixed housing (10) is fixedly connected to the outer wall of the nut (3). A rotating rod (16) is rotatably connected inside the fixed housing (10). A first fixed column (14) is fixedly connected inside the fixed housing (10). A first spring (15) is sleeved on the outer wall of the first fixed column (14). The lower surface of the first spring (15) is fixedly connected inside the fixed housing (10). The upper surface of the first spring (15) is fixedly connected to a lifting plate (11). A limiting groove (12) is formed inside the lifting plate (11). One side of the rotating rod (16) is slidably connected inside the limiting groove (12). A clamping block (13) is fixedly connected to the upper surface of the lifting plate (11). The outer wall of the clamping block (13) is slidably connected inside the sound insulation ring (2). A switch assembly is provided on the outer wall of the lifting plate (11), and the switch assembly is used to switch the clamping block (13).

2. The silent and noise-reducing transmission structure of the ball screw according to claim 1, characterized in that: The switch assembly includes a button (6), and the outer wall of the button (6) is fixedly connected to the outer wall of the lifting plate (11).

3. The ball screw silent noise reduction transmission structure according to claim 1, wherein: An oil injection port (4) is formed inside the nut (3), and an oil injection channel (8) is formed inside the nut (3).

4. The silent and noise-reducing transmission structure of the ball screw according to claim 3, wherein: A connecting plate (22) is fixedly connected inside the oil injection channel (8), and a connecting housing (7) is fixedly connected to the upper surface of the connecting plate (22).

5. The silent noise reduction transmission structure of the ball screw according to claim 4, characterized in that: A second fixed column (21) is fixedly connected inside the connecting housing (7), and a limiting block (20) is fixedly connected to the top of the second fixed column (21).

6. The silent and noise-reducing transmission structure of the ball screw according to claim 5, characterized in that: A second spring (17) is sleeved on the outer wall of the second fixed column (21). The bottom end of the second spring (17) is fixedly connected inside the connecting housing (7), and the top end of the second spring (17) is fixedly connected to a lifting column (18).

7. The silent and noise-reducing transmission structure of the ball screw according to claim 6, wherein: The outer wall of the lifting column (18) is slidably connected inside the connecting housing (7), and the inner wall of the lifting column (18) is slidably connected to the outer wall of the limiting block (20).

8. The silent and noise-reducing transmission structure of the ball screw according to claim 7, characterized in that: A conical block (23) is fixedly connected to the top of the lifting column (18), and a rubber plug (19) is fixedly connected to the top of the conical block (23). The outer wall of the rubber plug (19) is slidably connected inside the oil injection port (4).

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