High-precision linear guide rail

Abstract

The utility model provides a high-precision linear guide rail which is composed of a guide rail body, a sliding seat and a motor. The guide rail comprises a guide rail body, a guide plate and a fixing plate. The sliding base is sleeved with the guide plate and embedded into an inner cavity of the guide rail body. The motor is installed on the fixing plate, drives the sliding base through the lead screw and is matched with the nut hole to achieve linear motion. The guide rail body is provided with the guide groove, the sliding seat extends the stabilizing plate, and the damping assembly between the guide groove and the stabilizing plate effectively absorbs vibration to improve stability and positioning precision. In addition, the guide rail body is provided with a ball groove, friction is reduced through balls, abrasion is reduced through a gasket of a sliding seat guide groove, and reasonable use and sealing of lubricating oil are guaranteed through cooperation of an oil channel, a sealing groove and a sealing strip. The linear guide rail is excellent in high-precision movement, stability, service life prolonging and adaptability, and is suitable for the fields with strict precision requirements, such as precision machining and semiconductor manufacturing.

Description

TECHNICAL FIELD

[0001] The utility model relates to linear guide rail technical field, in particular to a high accuracy linear guide rail. BACKGROUND

[0002] In the field of modern industrial production and manufacturing, high-precision linear motion control is crucial. Traditional linear guide rail systems gradually reveal many limitations when facing the growing demand for high precision and high stability.

[0003] On the one hand, early guide rail designs mostly use simple sliding contact, which results in large friction between the slide and the guide rail. This not only leads to huge energy consumption for driving the slide to move, but also causes component wear, which quickly reduces the precision of the guide rail and makes it difficult to meet the demanding positioning precision requirements of industries such as precision machining and semiconductor manufacturing.

[0004] On the other hand, traditional guide rails have poor stability during operation. When the slide moves at high speed, frequently starts and stops, or bears a large lateral force, the slide is prone to shaking and derailing due to lack of effective guidance and limiting optimization, which seriously affects the normal operation of the equipment and the quality of the products. SUMMARY

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present utility model is to provide a high-precision linear guide rail to solve the problem of low guide rail precision in the prior art.

[0006] To achieve the above-mentioned purposes and other related purposes, the present utility model provides the following technical solutions:

[0007] A high-precision linear guide rail includes a guide rail, a slide disposed on the guide rail, and a motor driving the slide to move along the guide rail. The guide rail includes a guide rail body, a guide plate disposed at the open end of the guide rail body, and a fixed plate disposed at both ends of the guide rail body for connecting the guide rail body and the guide plate. An opening is provided between the guide rail body and the guide plate. The slide is sleeved on the guide plate and embedded in the inner cavity of the guide rail body through the opening. One of the fixed plates is provided with a motor, and a lead screw is provided on the output shaft of the motor. A nut hole for assembling the lead screw is provided on the slide. A guide groove is provided on the guide rail body, and a stabilizing plate extends from the slide. A damping assembly is provided between the stabilizing plate and the guide groove.

[0008] The motor is installed on one of the fixed plates, and the output shaft of the motor is connected to the lead screw. The sliding seat is provided with a nut hole matched with the lead screw. With the rotation of the lead screw, the sliding seat advances or retreats along the lead screw through the nut hole, realizing linear motion along the guide rail body. The guide rail body is provided with a guide groove, and the stabilizing plate on the sliding seat extends into the guide groove, and a damping assembly is arranged between the two. This not only ensures that the sliding seat can move smoothly and accurately along the predetermined trajectory, but also absorbs and reduces the vibration generated during operation, further improving the stability and positioning accuracy of the guide rail. The sliding seat is sleeved on the guide plate and embedded in the inner cavity of the guide rail body through the opening between the guide rail body and the guide plate. The guide rail body and the guide plate cooperatively play a guiding and limiting function on the sliding seat, effectively preventing the sliding seat from shaking, derailing and other unstable phenomena during high-speed motion, frequent start-stop or under large lateral force.

[0009] In an embodiment of the present application, a ball groove is formed in the guide rail body, and a ball abutting against the sliding seat is assembled in the ball groove.

[0010] The above technical solution is realized. The rolling contact between the ball and the sliding seat replaces the traditional sliding contact, greatly reducing the friction coefficient, making the movement of the sliding seat on the guide rail smoother and more fluent, reducing the jerk or jamming phenomenon caused by sliding friction, and ensuring higher positioning accuracy and stability.

[0011] In an embodiment of the present application, a guide groove for penetrating the guide plate is formed in the sliding seat, and a gasket is arranged in the guide groove.

[0012] The above technical solution is realized. The gasket can play a buffering role between the sliding seat and the guide plate, reducing the wear caused by direct metal contact. This not only protects the sliding seat and the guide plate and prolongs their service life, but also maintains long-term stable performance.

[0013] In an embodiment of the present application, the damping assembly includes a mounting groove formed in the stabilizing plate and corresponding to the guide groove, a roller rollingly arranged in the guide groove, and an elastic assembly for rollingly mounting the roller.

[0014] The above technical solution is realized. When the sliding seat moves on the guide rail, if it is impacted by the outside or vibrates due to its own movement, the vibration will be transmitted to the stabilizing plate through the sliding seat. The mounting groove in the stabilizing plate is provided with an elastic assembly, so that the elastic assembly is elastically deformed, absorbs and buffers the remaining vibration energy, and reduces the transmission of vibration to the guide rail body and the entire device.

[0015] In one embodiment of the present invention, the elastic component includes a fixed seat for rolling the roller and a mounting plate disposed in the mounting groove; the mounting plate has a buffer groove, the fixed seat has a buffer rod embedded in the buffer groove, the buffer rod is sleeved with a spring, and the mounting plate has a spring seat located on the buffer groove.

[0016] To achieve the above technical solution, when the slide is subjected to vibration, the vibration is transmitted to the roller through the stabilizing plate, and the roller transmits the force to the fixed seat. The buffer rod on the fixed seat moves in the buffer groove, compressing the spring. The spring undergoes elastic deformation, absorbing and storing vibration energy, thus playing a role in buffering and shock absorption.

[0017] In one embodiment of this utility model, there is a certain gap between the guide rail body and the slide block, and an oil passage communicating with the gap is provided on the slide block.

[0018] To achieve the above technical solution, there is a gap between the guide rail body and the slide block. The oil passage on the slide block allows lubricating oil to enter the gap and form an oil film. When the slide block moves, the balls roll between the guide rail and the slide block. The lubricating oil can reduce the friction between the balls and the guide rail and the slide block. At the same time, sealing devices can be installed on both sides of the slide block to prevent lubricating oil leakage.

[0019] In one embodiment of this utility model, a sealing groove for placing a sealing strip is provided between the guide rail body and the slide block.

[0020] To achieve the above technical solution, a sealing groove is set between the guide rail body and the slide block, and a sealing strip is placed there, which can form an effective sealing barrier to prevent the lubricating oil that has entered the ball from leaking out.

[0021] As described above, the high-precision linear guide rail of this utility model has the following beneficial effects: Through the coordinated operation of the guide rail body, guide plate, fixing plate, and screw transmission system, precise and accurate guidance is provided for the slide. The slide is tightly fitted onto the guide plate and embedded in the inner cavity of the guide rail body, comprehensively restricting the slide's degrees of freedom and ensuring its movement strictly follows the predetermined linear trajectory. By setting shock-absorbing components and a rationally designed structure, instability such as swaying and derailment is effectively prevented when the slide is in high-speed motion, frequently starting and stopping, or subjected to large lateral forces, enhancing overall safety and stability. The design of the gaskets and sealing strips reduces wear caused by direct metal contact, while the presence of lubrication channels ensures sufficient lubrication of key parts. These measures work together to extend the service life of each component. Attached Figure Description

[0022] Figure 1 The diagram shown is a structural schematic of this utility model.

[0023] Figure 2A sectional view of the present application is shown.

[0024] Figure 3 A sectional view of the present application is shown. Figure 2 A partial enlarged view at A.

[0025] Figure 4 A sectional view of the present application is shown. Figure 3 A partial enlarged view at B.

[0026] Element number explanation

[0027] 1, slide; 2, motor; 3, guide rail main body; 4, guide plate; 5, fixed plate; 6, opening; 8, screw rod; 9, nut hole; 10, guide groove; 11, stabilizing plate; 12, ball groove; 13, ball; 14, guide groove; 15, gasket; 16, mounting groove; 17, roller; 18, fixed seat; 19, mounting plate; 20, buffer groove; 21, buffer rod; 22, spring; 23, spring seat; 24, gap; 25, oil channel; 26, sealing strip. DETAILED DESCRIPTION

[0028] The following specific embodiments illustrate the implementation of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosed content. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0029] Please refer to Figures 1-4 The utility model provides a kind of high-precision linear guide rail, including guide rail, slide setting on the slide 1 of the guide rail and the motor 2 of driving the slide 1 along the guide rail moves, the guide rail includes guide rail main body 3, the guide plate 4 of the opening 6 end of the guide rail main body 3 is set, the fixed plate 5 for connecting the guide rail main body 3 and guide plate 4 is set in the both ends of the guide rail main body 3;Opening 6 is equipped between the guide rail main body 3 and the guide plate 4, the slide 1 is sleeved on the guide plate 4 and is embedded in the inner cavity of the guide rail main body 3 by the opening 6;One of the fixed plate 5 is equipped with motor 2, the output shaft of the motor 2 is equipped with screw rod 8, the slide 1 is equipped with nut hole 9 for assembling the screw rod 8;Guide groove 10 is opened on the guide rail main body 3, the slide 1 extends stabilizing plate 11, and damping assembly is equipped between the stabilizing plate 11 and the guide groove 10.

[0030] The motor 2 is installed on one of the fixed plates 5, and its output shaft is connected to the lead screw 8. The sliding seat 1 is provided with a nut hole 9 matched with the lead screw 8. With the rotation of the lead screw 8, the sliding seat 1 advances or retreats along the lead screw 8 through the nut hole 9, realizing linear motion along the guide rail body 3. The guide rail body 3 is provided with a guide groove 10, and the stabilizing plate 11 on the sliding seat 1 extends into the guide groove 10, and a damping assembly is arranged therebetween. This not only ensures that the sliding seat 1 can move smoothly and accurately along the predetermined track, but also absorbs and reduces the vibration generated during operation, further improving the stability and positioning accuracy of the guide rail. The sliding seat 1 is sleeved on the guide plate 4 and embedded in the inner cavity of the guide rail body 3 through the opening 6 between the guide rail body 3 and the guide plate 4. The guide rail body 3 and the guide plate 4 cooperate to guide and limit the sliding seat 1, effectively preventing the sliding seat 1 from shaking or derailing during high-speed motion, frequent starting and stopping, or under a large lateral force.

[0031] The guide rail body 3 is provided with a ball 13 groove 12, and the ball 13 groove 12 is fitted with a ball 13 abutting against the sliding seat 1. By replacing the traditional sliding contact with rolling contact between the ball 13 and the sliding seat 1, the friction coefficient is greatly reduced, making the movement of the sliding seat 1 on the guide rail smoother and more fluent, reducing the jerk or jamming phenomenon caused by sliding friction, and ensuring higher positioning accuracy and stability.

[0032] The sliding seat 1 is provided with a guide groove 14 for penetrating the guide plate 4, and the guide groove 14 is provided with a gasket 15. The gasket 15 can play a buffering role between the sliding seat 1 and the guide plate 4, reducing the wear caused by direct metal contact. This not only protects the sliding seat 1 and the guide plate 4, prolonging their service life, but also maintains long-term stable performance.

[0033] The damping assembly includes a mounting groove 16 provided on the stabilizing plate 11 and corresponding to the guide groove 10, a roller 17 rollingly arranged in the guide groove 10, and an elastic assembly for rollingly mounting the roller 17. When the sliding seat 1 moves on the guide rail, if it is impacted by the outside or vibrates due to its own movement, the vibration will be transmitted to the stabilizing plate 11 through the sliding seat 1. The mounting groove 16 on the stabilizing plate 11 is fitted with an elastic assembly, so that the elastic assembly is elastically deformed, absorbing and buffering the remaining vibration energy and reducing the transmission of vibration to the guide rail body 3 and the entire equipment.

[0034] The elastic assembly includes a fixing seat 18 for rollingly mounting the roller 17, and a mounting plate 19 arranged in the mounting groove 16. The mounting plate 19 is provided with a buffer groove 20, and the fixing seat 18 is provided with a buffer rod 21 embedded in the buffer groove 20. The buffer rod 21 is sleeved with a spring 22, and the mounting plate 19 is provided with a spring 22 seat located on the buffer groove 20.

[0035] When the sliding seat 1 is shaken, the shaking is transmitted to the roller 17 through the stabilizing plate 11, and the roller 17 transmits the force to the fixed seat 18. The buffer rod 21 on the fixed seat 18 moves in the buffer groove 20, compressing the spring 22. The spring 22 is elastically deformed, absorbing and storing the shaking energy, and playing a role of buffering and damping.

[0036] The guide rail body 3 and the sliding seat 1 have a gap 24, and the sliding seat 1 is provided with an oil channel 25 communicating with the gap 24. The gap 24 is formed between the guide rail body 3 and the sliding seat 1, and the oil channel 25 on the sliding seat 1 can make lubricating oil enter the gap 24 to form an oil film. When the sliding seat 1 moves, the ball 13 rolls between the guide rail and the sliding seat 1, and the lubricating oil can reduce the friction between the ball 13 and the guide rail and the sliding seat 1. At the same time, the sealing device can be arranged on both sides of the sliding seat 1 to prevent the lubricating oil from leaking.

[0037] The guide rail body 3 and the sliding seat 1 are provided with a sealing groove for placing a sealing strip 26. The sealing groove is arranged between the guide rail body 3 and the sliding seat 1, and the sealing strip 26 is placed in the sealing groove, which can form an effective sealing barrier to prevent the lubricating oil in the ball 13 from leaking outward.

[0038] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. All equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should still be covered by the claims of the present application.

Claims

1. A high-precision linear guide rail, comprising a guide rail, a sliding block slidingly arranged on the guide rail, and a motor driving the sliding block to move along the guide rail, characterized in that: The guide rail comprises a guide rail body, a guide plate arranged at the open end of the guide rail body, and fixing plates arranged at both ends of the guide rail body and used for connecting the guide rail body and the guide plate; An opening is arranged between the guide rail body and the guide plate, the sliding seat is sleeved on the guide plate and embedded in the inner cavity of the guide rail body through the opening; One of the fixing plates is provided with a motor, a screw rod is arranged on the output shaft of the motor, and a nut hole for assembling the screw rod is arranged on the sliding seat; A guide groove is arranged on the guide rail body, a stabilizing plate extends from the sliding seat, and a damping assembly is arranged between the stabilizing plate and the guide groove.

2. The high-precision linear guide rail according to claim 1, characterized in that: A ball groove is arranged on the guide rail body, and a ball abutting against the sliding seat is assembled in the ball groove.

3. The high-precision linear guide rail according to claim 1, characterized in that: A guide groove for penetrating the guide plate is arranged on the sliding seat, and a gasket is arranged in the guide groove.

4. The high-precision linear guide rail according to claim 1, characterized in that: The damping assembly comprises a mounting groove arranged on the stabilizing plate and corresponding to the guide groove, a roller arranged in the guide groove in a rolling manner, and an elastic assembly used for rolling mounting the roller.

5. The high-precision linear guide rail according to claim 4, characterized in that: The elastic assembly comprises a fixing seat used for rolling mounting the roller and a mounting plate arranged in the mounting groove. A buffer groove is arranged on the mounting plate, a buffer rod is arranged on the fixing seat and embedded in the buffer groove, a spring is sleeved on the buffer rod, and a spring seat is arranged on the mounting plate and located on the buffer groove.

6. The high-precision linear guide rail according to claim 1, characterized in that: A gap is arranged between the guide rail body and the sliding seat, and an oil channel is arranged on the sliding seat and connected to the gap.

7. The high-precision linear guide rail according to claim 1, characterized in that: A sealing groove for placing a sealing strip is arranged between the guide rail body and the sliding seat.

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