Linear guide rail capable of adjusting pre-pressure for numerical control machine tool
By introducing an adjustment mechanism on the linear guide rail and using a motor to drive a bidirectional lead screw and a moving block to adjust the distance between the guide wheel and the guide rail, the problem of cumbersome pre-pressure adjustment in the existing technology is solved, and an efficient and accurate pre-pressure adjustment effect is achieved.
Patent Information
- Application Number
- CN202422742746.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-11-11
AI Technical Summary
The preload adjustment process of existing linear guides is cumbersome and inefficient, and is mainly achieved by replacing the size of the guide wheel or steel column, which makes adjustment inconvenient.
An adjustment mechanism is adopted, including a motor, a bidirectional screw, a moving block and a limit block. The motor drives the bidirectional screw to rotate, driving the moving block and the mounting plate to move, and adjusting the distance between the guide wheel and the guide rail to achieve precise adjustment of the preload. The limit block and the guide groove ensure the stability of the movement.
The efficient adjustment of the preload of the linear guide rail is achieved, the adjustment efficiency is improved, and the accuracy and stability of the movement are ensured.
Smart Images
Figure CN223338871U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of linear guide rails for numerically controlled machine tools with adjustable pre-pressure, in particular to a linear guide rail for numerically controlled machine tools with adjustable pre-pressure. Background Art
[0002] Linear guides, also known as linear rails, require preload adjustment during installation, so linear guides with preload adjustment are required.
[0003] At present, the preload adjustment of linear guide rails is mainly achieved by adjusting the distance between the guide wheel or steel column and the linear guide rail. Generally, the adjustment is mainly achieved by replacing the size of the guide rail or steel column, which is cumbersome and inefficient. Utility Model Content
[0004] In order to solve the above problems, the purpose of the present invention is to provide a linear guide rail for CNC machine tools with adjustable preload, so as to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model proposes a linear guide rail for CNC machine tools with adjustable preload, comprising a guide rail body, a slider being slidably connected to the bottom of the guide rail body;
[0006] The inner wall of the slider is provided with an adjustment mechanism, and the adjustment mechanism includes a movable plate, a guide wheel, a through slot, a fixed rod and a mounting plate. Four through slots are opened at the bottom of the slider, and four movable plates are slidably connected to the top of the inner wall of the slider, wherein the bottoms of two of the movable plates are fixedly installed with mounting plates, and the bottom ends of the two mounting plates are fixedly installed with fixing rods that are interlaced and connected with the through slots, and the bottom ends of the four fixed rods are fixedly installed with guide wheels that are slidably connected to the guide rail body.
[0007] In one example, a motor is fixedly mounted on the top of the inner wall of the slider, and a bidirectional screw is fixedly mounted on the output shaft of the motor.
[0008] In one example, a moving block is fixedly mounted on the bottom of each of the two mounting plates, and both of the moving blocks are threadedly connected to the bidirectional lead screw.
[0009] In one example, four limiting grooves are formed on the top of the inner wall of the sliding block, and the inner walls of the four limiting grooves are slidably connected to limiting blocks fixedly connected to the movable plate.
[0010] In one example, two spring columns are fixedly mounted on the middle portion of the bottom of the slider, and guide plates are fixedly mounted on the bottom ends of the two spring columns.
[0011] In one example, a guide groove is provided on the top of the guide rail body, and the guide groove is adapted to the guide plate.
[0012] The linear guide rail for CNC machine tools with adjustable preload proposed by the utility model can bring the following beneficial effects:
[0013] 1. This linear guide rail for CNC machine tools with adjustable preload cooperates with the adjustment mechanism, motor, bidirectional lead screw and moving block. The motor is started to drive the bidirectional lead screw to rotate, and the moving blocks are driven to move toward each other. At this time, the guide wheel is driven to approach the guide rail body through the mounting plate and the fixed rod, and its preload is adjusted.
[0014] 2. This linear guide rail for CNC machine tools with adjustable preload drives the moving plate to move when the mounting plate moves, which drives the limit block to move in the limit groove, and can limit the moving block to avoid deviation or offset during movement. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:
[0016] Figure 1 This is a schematic diagram of the structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the guide wheel structure of the utility model;
[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the slider of the utility model;
[0019] Figure 4 This is a schematic diagram of the guide plate structure of the utility model.
[0020] In the figure: 1. Guide rail body; 2. Slider; 3. Motor; 4. Bidirectional screw; 5. Moving block; 6. Mounting plate; 7. Fixing rod; 8. Through slot; 9. Guide wheel; 10. Moving plate; 11. Limit block; 12. Limit slot; 13. Spring column; 14. Guide plate; 15. Guide slot. DETAILED DESCRIPTION
[0021] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.
[0022] like Figures 1 to 4 As shown, the embodiment of the present utility model provides a linear guide rail for CNC machine tools with adjustable preload, comprising a guide rail body 1, a slider 2 being slidably connected to the bottom of the guide rail body 1;
[0023] The inner wall of the slider 2 is provided with an adjustment mechanism, and the adjustment mechanism includes a movable plate 10, a guide wheel 9, a through slot 8, a fixed rod 7 and a mounting plate 6. Four through slots 8 are opened at the bottom of the slider 2, and four movable plates 10 are slidably connected to the top of the inner wall of the slider 2, wherein the bottoms of the two movable plates 10 are fixedly installed with mounting plates 6, and the bottom ends of the two mounting plates 6 are fixedly installed with fixed rods 7 that are interlaced with the through slots 8, and the bottom ends of the four fixed rods 7 are fixedly installed with guide wheels 9 that are slidably connected to the guide rail body 1.
[0024] Specifically, a motor 3 is fixedly mounted on the top of the inner wall of the slider 2 , and a bidirectional screw rod 4 is fixedly mounted on the output shaft of the motor 3 . The motor 3 drives the bidirectional screw rod 4 to rotate, and the rotation of the bidirectional screw rod 4 drives the moving blocks 5 to move toward each other.
[0025] Specifically, the bottom of the two mounting plates 6 are fixedly installed with moving blocks 5, and the two moving blocks 5 are threadedly connected to the bidirectional screw rod 4. The moving blocks 5 move toward each other, driving the mounting plates 6 to move toward each other, which will drive the guide wheel 9 and the guide rail body 1 to be better clamped, thereby playing a pre-load adjustment role.
[0026] Specifically, four limiting grooves 12 are opened on the top of the inner wall of the slider 2, and the inner walls of the four limiting grooves 12 are slidably connected with limiting blocks 11 fixedly connected to the movable plate 10. The limiting grooves 12 limit the limiting blocks 11, and the limiting blocks 11 limit the moving movable plate 10.
[0027] Specifically, two spring columns 13 are fixedly installed in the middle of the bottom of the slider 2, and the bottom ends of the two spring columns 13 are fixedly installed with guide plates 14. The guide plates 14 are fixed by the spring columns 13, and the guide plates 14 slide in the guide grooves 15 to play a guiding role.
[0028] Specifically, a guide groove 15 is formed on the top of the guide rail body 1 , and the guide groove 15 is adapted to the guide plate 14 , and the guide plate 14 is guided by the guide groove 15 .
[0029] Working principle: When the pre-pressure needs to be adjusted, the starting motor 3 drives the bidirectional screw 4 to rotate, which will drive the moving block 5 to move toward each other, and drive the mounting plate 6 to move toward each other. At this time, the guide wheel 9 is driven to move toward each other through the fixed rod 7, and engaged with the guide rail body 1. At this time, the distance between the guide rail body 1 and the guide wheel 9 can be adjusted, and the pre-pressure can be adjusted. At the same time, when the mounting plate 6 moves, it drives the moving plate 10 to move, which will drive the limit block 11 to move in the limit groove 12, and limit it when it moves. At the same time, the guide plate 14 is engaged with the guide groove 15, and the slider 2 can be guided during subsequent movement. Therefore, the slider 2 can guide it when it moves, and can adjust the pre-pressure of the guide rail body 1.
[0030] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.
[0031] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.
Claims
1. A linear guide rail for a numerically controlled machine tool with adjustable preload, comprising a guide rail body (1), wherein a slider (2) is slidably connected to the bottom of the guide rail body (1); Its characteristics are: The inner wall of the slider (2) is provided with an adjustment mechanism, and the adjustment mechanism includes a movable plate (10), a guide wheel (9), a through slot (8), a fixed rod (7) and a mounting plate (6). Four through slots (8) are provided at the bottom of the slider (2). Four movable plates (10) are slidably connected to the top of the inner wall of the slider (2), wherein the bottoms of two of the movable plates (10) are fixedly installed with mounting plates (6), the bottom ends of the two mounting plates (6) are fixedly installed with fixed rods (7) interlaced with the through slots (8), and the bottom ends of the four fixed rods (7) are fixedly installed with guide wheels (9) slidably connected to the guide rail body (1).
2. The linear guide rail for CNC machine tools with adjustable preload according to claim 1, characterized in that: A motor (3) is fixedly mounted on the top of the inner wall of the slider (2), and a bidirectional screw rod (4) is fixedly mounted on the output shaft of the motor (3).
3. The linear guide rail for CNC machine tools with adjustable preload according to claim 2, characterized in that: A moving block (5) is fixedly mounted on the bottom of each of the two mounting plates (6), and each of the two moving blocks (5) is threadedly connected to the bidirectional screw rod (4).
4. The linear guide rail for CNC machine tools with adjustable preload according to claim 1, characterized in that: Four limiting grooves (12) are provided on the top of the inner wall of the slider (2), and the inner walls of the four limiting grooves (12) are slidably connected to limiting blocks (11) fixedly connected to the movable plate (10).
5. The linear guide rail for CNC machine tools with adjustable preload according to claim 1, characterized in that: Two spring columns (13) are fixedly mounted on the middle portion of the bottom of the slider (2), and guide plates (14) are fixedly mounted on the bottom ends of the two spring columns (13).
6. The linear guide rail for CNC machine tools with adjustable preload according to claim 5, characterized in that: A guide groove (15) is provided on the top of the guide rail body (1), and the guide groove (15) is adapted to the guide plate (14).