High-precision numerical control machine tool screw anti-loosening fastening structure

Abstract

The utility model provides a high accuracy numerical control machine tool screw anti -loosening fastening structure relates to screw protection technical field, include: base. In the utility model, need not frequently dismounts the equipment to carry out antirust treatment, the combination of oil pipe, cross communication spare and the rotation column and the mute pulley of positive and negative setting, can in screw operation process, no matter its movement direction how, can even and continuously smear antirust oil on screw surface, this not only effectively isolates air and moisture and other erosion medium, greatly reduces the risk of screw rust, corrosion and wear, and the characteristic of antirust oil fills screw thread gap and each connecting part tiny gap, reduces the hidden danger of part loosening due to vibration, friction from the root, prolongs the service life of screw and whole equipment, improves the reliability of equipment, and traditional structure often is difficult to give consideration to the double needs of antirust and anti -loosening, and the antirust measure is more for regular manual smearing, and the efficiency is low and the effect is unstable.

Description

Technical Field

[0001] This utility model relates to the field of lead screw protection technology, and in particular to a high-precision CNC machine tool lead screw anti-loosening fastening structure. Background Technology

[0002] In today's booming modern manufacturing industry, high-precision CNC machine tools, as core equipment of advanced manufacturing technology, are widely used in many high-end fields such as aerospace, automobile manufacturing, and precision mold processing. Their machining accuracy and stability directly determine the quality and performance of products. As a key transmission component of high-precision CNC machine tools, the lead screw bears the important responsibility of converting rotary motion into linear motion and accurately transmitting motion and power. The performance of the lead screw plays a decisive role in whether the machine tool can operate accurately and efficiently. As the manufacturing industry's requirements for machining accuracy and production efficiency continue to rise, the need for innovation in lead screw protection technology has become more urgent. However, current traditional lead screw protection methods are gradually revealing many drawbacks in practical applications.

[0003] 1) In terms of rust prevention, most rely on manual application of rust-preventive paint or oil on a regular basis. This method is not only labor-intensive and time-consuming, but also difficult to apply evenly and comprehensively. As a result, some areas of the lead screw are susceptible to corrosion from humid air and cutting fluid, which frequently leads to rust and corrosion, significantly shortening the service life of the lead screw.

[0004] 2) From the perspective of preventing loosening, the existing lead screw fastening structure mostly adopts a simple nut fastening method. Faced with the strong vibration generated by the high-speed operation of the machine tool and the complex cutting force, the nut is easy to loosen, which leads to a decrease in the transmission accuracy of the lead screw, large dimensional deviation of the machined parts, and difficulty in meeting the requirements of high-precision machining. In addition, the rust prevention and anti-loosening functions are independent of each other and fail to form an effective synergy, and cannot provide reliable protection for the lead screw as a whole.

[0005] Furthermore, traditional lead screw protection structures suffer from high resistance during operation due to the lack of efficient guidance and friction reduction design, which can easily lead to jamming. This further exacerbates the wear and loosening of components, severely restricting the improvement of processing efficiency and quality of high-precision CNC machine tools. Therefore, it is urgent to develop a lead screw anti-loosening fastening structure that can effectively integrate anti-rust and anti-loosening functions while ensuring high-precision operation. Utility Model Content

[0006] The purpose of this invention is to solve the problems of inefficient rust prevention, disconnect between anti-loosening and rust prevention functions, poor accuracy during operation, easy jamming, and loose parts affecting equipment life in the existing technology, and to propose a high-precision CNC machine tool lead screw anti-loosening fastening structure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a high-precision CNC machine tool lead screw anti-loosening fastening structure, comprising: a base, wherein an upper protective cover is slidably disposed on the outer surface of the base, and an anti-rust device is disposed inside the upper protective cover; the anti-rust device comprises an oil storage tank, wherein an oil inlet is fixedly connected to the outer surface of the oil storage tank, and an oil delivery pipe is fixedly connected to the outer wall of the oil storage tank, wherein a cross connector is fixedly connected to one end of the oil delivery pipe, and a set of rotating columns is fixedly connected to the bottom of the cross connector, and each set of rotating columns is provided with two in each direction.

[0008] Preferably, each pair of rotating columns in both directions is fixedly connected to a set of rotating shafts on opposite sides, and each set of rotating columns has a silent pulley fixedly connected to its outer wall.

[0009] Preferably, each set of silent pulleys has an oil outlet hole at its bottom, and a motor is fixedly connected to the outer surface of the base.

[0010] Preferably, the output end of the motor is fixedly connected to a lead screw, and the top of the base is fixedly connected to a set of limiting pulley grooves.

[0011] Preferably, a bearing is threadedly connected to the outer wall of the lead screw, and a sliding block is fixedly connected to the outer wall of the bearing.

[0012] Preferably, a sliding seat is fixedly connected to the top of the sliding block, and the top of the sliding seat is fixedly connected to the bottom of the upper protective cover.

[0013] Preferably, the bottom of the sliding seat and the inner bottom of the base are slidably fitted together, and the outer wall of each silent pulley is slidably fitted to the inner groove of the limiting pulley.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. In this utility model, there is no need to frequently disassemble the equipment for rust prevention. The combination of the oil supply pipe, the cross connector, and the rotating columns and silent pulleys arranged in opposite directions can evenly and continuously apply rust-preventive oil to the surface of the screw during its operation, regardless of its direction of movement. This not only effectively isolates the screw from corrosive media such as air and moisture, greatly reducing the risk of rust, corrosion and wear, but also reduces the risk of loosening of parts due to vibration and friction by filling the screw thread gaps and tiny gaps in various connection parts. This extends the service life of the screw and the entire equipment and improves the reliability of the equipment. Traditional structures often cannot meet the dual requirements of rust prevention and loosening prevention, and rust prevention measures are mostly done manually on a regular basis, which is inefficient and the effect is unstable.

[0016] 2. In this utility model, the motor drives the lead screw to rotate, which in turn moves the connected bearings, sliding blocks, sliding seats, and upper protective cover. During the process, the limit pulley groove and the silent pulley cooperate with each other. On the one hand, it accurately guides the equipment components to perform stable linear motion, ensuring the high precision of the lead screw transmission, a level of precision control that is difficult to achieve with traditional structures. On the other hand, it effectively reduces friction during movement and reduces energy consumption. At the same time, during the rotation of the lead screw and the movement of the components, the silent pulley continuously slides in the limit pulley groove and is coated with anti-rust oil. The anti-rust oil maintains the smoothness of the lead screw and other components, reduces wear, and further consolidates the stability of each connection part, preventing loosening due to component vibration and displacement. This ensures that the entire high-precision CNC machine tool lead screw anti-loosening fastening structure always maintains an efficient and precise operating state. In contrast, existing technologies may experience problems such as jamming, precision deviation, and component loosening during operation due to structural design defects. Attached Figure Description

[0017] Figure 1 A perspective view of a high-precision CNC machine tool lead screw anti-loosening fastening structure is presented in this utility model;

[0018] Figure 2 This utility model presents another perspective view of a high-precision CNC machine tool lead screw anti-loosening fastening structure;

[0019] Figure 3 This utility model proposes a three-dimensional view of the base structure of a high-precision CNC machine tool lead screw anti-loosening fastening structure;

[0020] Figure 4 This utility model provides a three-dimensional cross-sectional view of the internal structure of a high-precision CNC machine tool lead screw anti-loosening fastening structure.

[0021] Figure 5 This utility model provides a partially disassembled three-dimensional view of a high-precision CNC machine tool lead screw anti-loosening fastening structure;

[0022] Figure 6 This utility model presents a three-dimensional view of the structure of a high-precision CNC machine tool lead screw anti-loosening fastening structure from another angle.

[0023] Legend: 1. Base; 11. Motor; 12. Lead screw; 13. Limiting pulley groove; 2. Bearing; 21. Sliding block; 22. Sliding seat; 3. Upper protective cover; 4. Rust prevention device; 401. Oil storage tank; 402. Oil inlet; 403. Oil supply pipe; 404. Cross connector; 405. Rotating column; 406. Rotating shaft; 407. Silent pulley; 408. Oil outlet. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Example 1: Please refer to the attached document. Figure 1 - Appendix Figure 6 As shown, this utility model provides a high-precision CNC machine tool lead screw anti-loosening fastening structure, including a base 1, an upper protective cover 3 slidably disposed on the outer surface of the base 1, and an anti-rust device 4 disposed inside the upper protective cover 3; the anti-rust device 4 includes an oil storage tank 401, an oil inlet 402 fixedly connected to the outer surface of the oil storage tank 401, an oil supply pipe 403 fixedly connected to the outer wall of the oil storage tank 401, a cross connector 404 fixedly connected to one end of the oil supply pipe 403, a set of rotating columns 405 fixedly connected to the bottom of the cross connector 404, and each set of rotating columns 405 is provided with two in opposite directions, a set of rotating shafts 406 fixedly connected to the opposite side of each set of two rotating columns 405, a silent pulley 407 fixedly connected to the outer wall of each set of rotating columns 405, and an oil outlet hole 408 opened at the bottom of each set of silent pulleys 407.

[0027] The overall effect of Embodiment 1 is that the oil storage tank 401 in the rust prevention device 4 serves as a storage carrier for rust-preventive oil. Rust-preventive oil can be conveniently replenished through the oil inlet 402. The rust-preventive oil reaches the cross connector 404 through the oil supply pipe 403, and then seeps out through the oil outlet 408 at the bottom of the silent pulley 407, evenly covering key components such as the lead screw. During the operation of the lead screw, the rotating column 405 and the silent pulley 407, which are arranged in opposite directions, can closely adhere to the surface of the lead screw and apply rust-preventive oil, no matter how the lead screw reciprocates. This not only effectively isolates corrosive media such as air and moisture, preventing the lead screw from surface corrosion and wear due to rust, but more importantly, the oil film formed by the rust-preventive oil can fill the thread gaps of the lead screw and the tiny gaps in various connection parts, reducing the risk of component loosening caused by vibration and friction. At the same time, the silent pulley 407 can work with less frictional resistance when applying rust-preventive oil, which reduces noise and ensures that the rust-preventive oil is evenly distributed, comprehensively improving the anti-loosening performance and rust prevention ability of the lead screw, and extending the overall service life of the equipment.

[0028] Example 2: Please refer to the attached document. Figure 1 - Appendix Figure 6As shown, a motor 11 is fixedly connected to the outer surface of the base 1, a lead screw 12 is fixedly connected to the output end of the motor 11, a set of limiting pulley grooves 13 is fixedly connected to the top of the base 1, a bearing 2 is threadedly connected to the outer wall of the lead screw 12, a sliding block 21 is fixedly connected to the outer wall of the bearing 2, a sliding seat 22 is fixedly connected to the top of the sliding block 21, the top of the sliding seat 22 is fixedly connected to the bottom of the upper protective cover plate 3, the bottom of the sliding seat 22 is slidably fitted to the inner bottom of the base 1, and the outer wall of each silent pulley 407 is slidably fitted to the inside of the limiting pulley groove 13.

[0029] The overall effect of Embodiment 2 is that when the motor 11 starts, it drives the lead screw 12 to rotate. The lead screw 12 drives the bearing 2 and the connected sliding block 21, sliding seat 22, and upper protective cover 3 to move in a specific direction. During this process, the limiting pulley groove 13 and the silent pulley 407 cooperate with each other, which not only guides the stable linear movement of the equipment parts, but also significantly reduces friction during movement. More importantly, during the rotation of the lead screw and the movement of the parts, the silent pulley 407 in the anti-rust device 4 continuously slides in the limiting pulley groove 13 and is coated with anti-rust oil. The anti-rust oil can not only maintain the smoothness of the lead screw and other parts and reduce wear, but also further consolidate the stability of each connection part. Because the anti-rust oil fills the gaps, it can effectively prevent loosening caused by the vibration and displacement of the parts, ensuring the high precision and stability of the lead screw transmission, and keeping the high-precision CNC machine tool lead screw anti-loosening fastening structure in a highly efficient and accurate operating state.

[0030] Usage and working principle: Before starting the equipment, sufficient rust-preventive oil must be injected into the oil storage tank 401 through the oil inlet 402. When starting the high-precision CNC machine tool lead screw anti-loosening fastening structure, turn on the motor 11. The power output of the motor 11 causes the lead screw 12 to rotate. The rotation of the lead screw 12 drives the threaded bearing 2 to move axially, thereby driving the sliding block 21, sliding seat 22 and upper protective cover 3 to move synchronously. During the movement process, the silent pulley 407 in the anti-rust device 4 rolls in the limit pulley groove 13, and the anti-rust oil in the oil storage tank 401... Rust-preventing oil flows out from the oil outlet 408 through the oil supply pipe 403 and the cross connector 404, and is evenly applied to the surface of equipment components such as the lead screw. The rust-preventing oil not only prevents components from rusting, but also fills the tiny gaps between components, enhancing the tightness of connections and effectively preventing loosening caused by vibration and friction. Simultaneously, the limiting pulley groove 13 restricts and guides the movement direction of the silent pulley 407 and the entire structure, ensuring precise and stable movement. This achieves the functions of preventing loosening and fastening of components such as the lead screw, as well as efficient rust prevention protection, comprehensively ensuring the stable operation of the high-precision CNC machine tool.

[0031] The wiring diagram of the motor 11 in this utility model is common knowledge in the field, and its working principle is a well-known technology. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the motor 11 will not be explained in detail.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A high-precision CNC machine tool lead screw anti-loosening fastening structure, characterized in that, include: The base (1) has an upper protective cover plate (3) slidably disposed on its outer surface, and the upper protective cover plate (3) has an anti-rust device (4) disposed inside its interior; The rust prevention device (4) includes an oil storage tank (401), an oil inlet (402) is fixedly connected to the outer surface of the oil storage tank (401), an oil delivery pipe (403) is fixedly connected to the outer wall of the oil storage tank (401), a cross connector (404) is fixedly connected to one end of the oil delivery pipe (403), and a set of rotating columns (405) is fixedly connected to the bottom of the cross connector (404), and each set of rotating columns (405) is provided with two in opposite directions.

2. The high-precision CNC machine tool lead screw anti-loosening fastening structure according to claim 1, characterized in that: Each pair of rotating columns (405) has a set of rotating shafts (406) fixedly connected to the opposite sides, and each pair of rotating columns (405) has a silent pulley (407) fixedly connected to the outer wall.

3. The high-precision CNC machine tool lead screw anti-loosening fastening structure according to claim 2, characterized in that: Each set of silent pulleys (407) has an oil outlet hole (408) at its bottom, and a motor (11) is fixedly connected to the outer surface of the base (1).

4. The high-precision CNC machine tool lead screw anti-loosening fastening structure according to claim 3, characterized in that: The output end of the motor (11) is fixedly connected to a lead screw (12), and the top of the base (1) is fixedly connected to a set of limiting pulley grooves (13).

5. The high-precision CNC machine tool lead screw anti-loosening fastening structure according to claim 4, characterized in that: The outer wall of the lead screw (12) is threaded with a bearing (2), and the outer wall of the bearing (2) is fixedly connected with a sliding block (21).

6. The high-precision CNC machine tool lead screw anti-loosening fastening structure according to claim 5, characterized in that: The top of the sliding block (21) is fixedly connected to a sliding seat (22), and the top of the sliding seat (22) is fixedly connected to the bottom of the upper protective cover plate (3).

7. The high-precision CNC machine tool lead screw anti-loosening fastening structure according to claim 6, characterized in that: The bottom of the sliding seat (22) and the interior of the base (1) are slidably fitted together, and the outer wall of each silent pulley (407) is slidably fitted together with the interior of the limiting pulley groove (13).

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