High-precision linear guide rail pair

Abstract

The utility model relates to the technical field of linear guide rails, in particular to a high-precision linear guide rail pair which comprises guide rails, limiting sliding grooves are formed in the opposite outer walls of the guide rails, and a distance measuring assembly is installed at one end of each guide rail. Data are generated in real time through the infrared distance measuring sensor according to the distance between the transmitting end and the receiving end, meanwhile, when the rolling steel ball makes contact with the contact type sensor, the contact type sensor generates electric signals and transmits the electric signals to the control panel through the wire for monitoring, and when jamming occurs, the data fluctuates, and the control panel controls the buzzer to buzz; elastic extrusion force is applied to the limiting plate through the limiting spring, meanwhile, thrust is applied to the rolling steel ball through the limiting plate, then the rolling steel ball is attached to the inner wall of the limiting sliding groove to be fixed, and due to the fact that the rolling steel ball has elastic displacement, the rolling steel ball can be well attached and fixed regardless of the size of an assembly gap; and therefore, the displacement of the sliding steel part is more stable, and the moving precision of the device is better.

Description

Technical Field

[0001] The utility model relates to the technical field of linear guide rails, and particularly relates to a high-precision linear guide rail pair. Background Technique

[0002] A linear guide rail pair is a mechanical component composed of a guide rail, a slider, and rolling elements (such as ball bearings or cylindrical rollers), which is used to provide precise linear guiding function and allows an object to perform smooth and accurate linear motion along a predetermined direction. It reduces friction and improves the smoothness and precision of motion, and is widely used in various precision machinery and automation equipment;

[0003] In the existing linear guide rail pairs, due to design or manufacturing defects, the ball bearing assembly may get stuck during movement. If the stuck problem cannot be detected and the ball bearing assembly is not maintained in time, it will cause excessive wear of the equipment, thereby affecting the precision of the linear guide rail pair;

[0004] At the same time, the assembly precision of the linear guide rail pair directly affects its working performance. If the assembly is improper, it may lead to too large or too small a gap between the guide rail and the slider, thereby affecting the running precision and stability of the equipment.

[0005] Therefore, a high-precision linear guide rail pair is needed to improve the above problems. Content of the Utility Model

[0006] In order to solve the problem that the ball bearing assembly may get stuck during the movement of the linear guide rail pair. If the stuck problem cannot be detected and the ball bearing assembly is not maintained in time, it will cause excessive wear of the equipment, thereby affecting the precision of the linear guide rail pair, the utility model provides a high-precision linear guide rail pair to solve the above problems.

[0007] To achieve the above object, the utility model provides the following technical solutions:

[0008] A high-precision linear guide pair includes a guide rail. Limited position sliding grooves are provided on the opposite outer walls of the guide rail. A ranging component is installed at one end of the guide rail. A sliding steel part is slidably connected to the outer wall of the guide rail. A sliding groove is provided on the inner wall of the sliding steel part. A rolling steel ball is slidably connected to the inner wall of the sliding groove. One end of the rolling steel ball is slidably connected to the inner wall of the limited position sliding groove. A steel ball cage is installed on the outer wall of the rolling steel ball. The steel ball cage is located in the inner cavity of the sliding groove. And multiple groups of rolling steel balls are provided and are respectively located on the outer wall of the steel ball cage. The connection mode between the rolling steel ball and the limited position sliding groove is a sliding connection. A limiting component is provided on the inner wall of the sliding steel part. An installation groove is provided on one side of the sliding groove and on the inner wall of the sliding steel part. Rotary devices are installed on the opposite side walls of the sliding steel part. An end sealing end cover is installed on the outer wall of the rotary device. An oil nozzle is embedded and installed on the outer wall of the end sealing end cover.

[0009] As a preferred scheme of the utility model, the ranging component includes a mounting plate. The mounting plate is installed on the side wall of the guide rail. A buzzer is installed on the outer wall of the mounting plate. Fixed rods are symmetrically arranged on the outer wall of the mounting plate. And a limiting rubber pad is installed at one end of the fixed rod through a bolt. An infrared ranging sensor is installed on one side of the fixed rod and on the outer wall of the mounting plate. A control panel is installed on one side of the fixed rod and on the outer wall of the mounting plate.

[0010] As a preferred scheme of the utility model, the limiting component includes a limiting spring, a contact sensor and a lubricating oil sensor. The limiting spring is installed on the inner wall of the installation groove. A limiting plate is slidably connected to the inner wall of the installation groove on one side of the limiting spring.

[0011] As a preferred scheme of the utility model, the limiting plate is located on one side of the rolling steel ball. And the connection mode between the limiting plate and the rolling steel ball is a sliding connection. A contact sensor is embedded and installed on one side of the rolling steel ball and on the inner wall of the sliding groove. A lubricating oil sensor is embedded and installed on the inner wall of the sliding groove.

[0012] As a preferred scheme of the utility model, multiple groups of limited position sliding grooves are provided and are respectively located on the opposite outer walls of the guide rail. The sliding steel part is slidably connected to the inner wall of the limited position sliding groove through the rolling steel ball. The cross section of the sliding groove is a return structure. And multiple groups of sliding grooves are provided and are respectively located on the inner wall of the sliding steel part.

[0013] As a preferred scheme of the utility model, the cross section of the steel ball cage is a return structure. The connection between the installation groove and the sliding groove is a communicating structure. Two groups of rotary devices are provided and are respectively located on the opposite side walls of the sliding steel part. The receiving end of the infrared ranging sensor is located on one side of the oil nozzle.

[0014] As a preferred solution of the present utility model, the limiting rubber pad is located on one side of the infrared distance measuring sensor, and the limiting rubber pad protects the infrared distance measuring sensor. A plurality of groups of limiting springs are arranged from left to right and are respectively located on the inner wall of the installation groove. The limiting plate limits the rolling steel balls. The lubricating oil sensor is located on one side of the contact sensor.

[0015] As a preferred solution of the present utility model, the transmitting end of the infrared distance measuring sensor is located on the outer wall of the installation plate, and the receiving end of the infrared distance measuring sensor is located on the outer wall of the end sealing end cover. The control panel is respectively connected with a buzzer, an infrared distance measuring sensor, a contact sensor and a lubricating oil sensor through wires, and the connection method is electrical connection.

[0016] Compared with the prior art, by arranging a ranging component in the high-precision linear guide pair, the present utility model can monitor the displacement data of the sliding steel part. The infrared distance measuring sensor generates data in real time according to the distance between the transmitting end and the receiving end. At the same time, when the rolling steel ball contacts the contact sensor, the contact sensor generates an electrical signal and conducts it to the control panel through a wire. When jamming occurs, the above data will fluctuate. Subsequently, the control panel controls the buzzer to emit a beep, thereby prompting the staff to carry out maintenance, so as to solve the problem that the ball component may jam during the movement process. If the jamming problem cannot be detected in time and maintenance is carried out on the ball component, it will cause excessive wear of the equipment, and further affect the accuracy of the linear guide pair.

[0017] By arranging a limiting component in the high-precision linear guide pair, the present utility model can limit the rolling steel balls. The limiting spring applies an elastic squeezing force to the limiting plate, and at the same time the limiting plate applies a thrust to the rolling steel balls, so that the rolling steel balls are fixed by fitting on the inner wall of the limiting chute. Due to the elastic displacement of the rolling steel balls, regardless of the size of the assembly gap, the rolling steel balls can be well fitted and fixed, so that the displacement of the sliding steel part is more stable and the movement accuracy of the device is better, thereby solving the problem that the assembly accuracy of the linear guide pair directly affects its working performance. If the assembly is improper, it may cause the gap between the guide rail and the slider to be too large or too small, thereby affecting the running accuracy and stability of the equipment. Brief Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 It is a schematic diagram of the sectional structure of the sliding steel part of the present utility model;

[0020] Figure 3 It is a schematic diagram of the limiting component structure of the present utility model;

[0021] Figure 4 For the present utility model Figure 1 Schematic enlarged view of structure A;

[0022] Figure 5 For the present utility model Figure 3 Schematic enlarged view of structure B.

[0023] In the figure: 1, guide rail; 2, limit sliding groove; 3, distance measuring component; 301, mounting plate; 302, buzzer; 303, fixing rod; 304, bolt; 305, limit rubber pad; 306, infrared distance sensor; 307, control panel; 4, sliding steel part; 5, sliding groove; 6, rolling steel ball; 7, steel ball cage; 8, limit component; 801, limit spring; 802, contact sensor; 803, lubricating oil sensor; 804, limit plate; 9, mounting groove; 10, rotator; 11, end sealing end cover; 12, oil nozzle. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment: Please refer to Figures 1-5 A high-precision linear guide pair shown, including a guide rail 1, a limit sliding groove 2 is opened on the opposite outer walls of the guide rail 1, a distance measuring component 3 is installed at one end of the guide rail 1, a sliding steel part 4 is slidably connected to the outer wall of the guide rail 1, a sliding groove 5 is opened on the inner wall of the sliding steel part 4, a rolling steel ball 6 is slidably connected to the inner wall of the sliding groove 5, one end of the rolling steel ball 6 is slidably connected to the inner wall of the limit sliding groove 2, a steel ball cage 7 is installed on the outer wall of the rolling steel ball 6, wherein the steel ball cage 7 is located in the inner cavity of the sliding groove 5, and multiple groups of rolling steel balls 6 are provided and are respectively located on the outer wall of the steel ball cage 7. The connection mode between the rolling steel ball 6 and the limit sliding groove 2 is a sliding connection. A limit component 8 is arranged on the inner wall of the sliding steel part 4. An installation groove 9 is opened on one side of the sliding groove 5 and on the inner wall of the sliding steel part 4. Rotators 10 are installed on the opposite side walls of the sliding steel part 4. An end sealing end cover 11 is installed on the outer wall of the rotator 10. An oil nozzle 12 is embedded and installed on the outer wall of the end sealing end cover 11.

[0026] Among them, multiple groups of limiting sliding grooves 2 are provided and are respectively located on the opposite outer walls of the guide rail 1. The sliding steel part 4 is slidably connected to the inner wall of the limiting sliding groove 2 through rolling steel balls 6. Among them, the cross-section of the sliding groove 5 is a rectangular structure, and multiple groups of sliding grooves 5 are provided and are respectively located on the inner walls of the sliding steel parts 4. The cross-section of the steel ball cage 7 is a rectangular structure. The connection between the installation groove 9 and the sliding groove 5 is a communicating structure. Two groups of rotary devices 10 are provided and are respectively located on the opposite side walls of the sliding steel part 4.

[0027] In this embodiment, specifically refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the distance measuring assembly 3 includes a mounting plate 301. The mounting plate 301 is mounted on the side wall of the guide rail 1. A buzzer 302 is mounted on the outer wall of the mounting plate 301. Fixed rods 303 are symmetrically arranged on the outer wall of the mounting plate 301. And one end of the fixed rod 303 is mounted with a limiting rubber pad 305 through a bolt 304. And the limiting rubber pad 305 protects the infrared distance measuring sensor 306. On one side of the fixed rod 303 and on the outer wall of the mounting plate 301, an infrared distance measuring sensor 306 is mounted. The receiving end of the infrared distance measuring sensor 306 is located on one side of the oil nozzle 12. The limiting rubber pad 305 is located on one side of the infrared distance measuring sensor 306. On one side of the fixed rod 303 and on the outer wall of the mounting plate 301, a control panel 307 is mounted.

[0028] In this embodiment, specifically refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 , the limiting assembly 8 includes a limiting spring 801, a contact sensor 802 and a lubricating oil sensor 803. The limiting spring 801 is mounted on the inner wall of the installation groove 9. Multiple groups of limiting springs 801 are arranged from left to right and are respectively located on the inner wall of the installation groove 9. On one side of the limiting spring 801 and on the inner wall of the installation groove 9, a limiting plate 804 is slidably connected. The limiting plate 804 is located on one side of the rolling steel ball 6. And the connection mode between the limiting plate 804 and the rolling steel ball 6 is a sliding connection. The limiting plate 804 limits the rolling steel ball 6. On one side of the rolling steel ball 6 and on the inner wall of the sliding groove 5, a contact sensor 802 is embedded. A lubricating oil sensor 803 is embedded on the inner wall of the sliding groove 5.

[0029] Among them, under the action of the lubricating oil sensor 803 located on one side of the contact sensor 802, the lubricating oil sensor 803 monitors the lubricating oil in the inner cavity of the device in real time. At the same time, the lubricating oil sensor 803 generates an electrical signal and conducts it to the control panel 307 through a wire, facilitating the monitoring of the lubrication condition of the rolling steel balls 6. The transmitting end of the infrared distance sensor 306 is located on the outer wall of the mounting plate 301, and the receiving end of the infrared distance sensor 306 is located on the outer wall of the end sealing cover 11. Under the action that the control panel 307 is electrically connected to the buzzer 302, the infrared distance sensor 306, the contact sensor 802, and the lubricating oil sensor 803 through wires, the device is powered on;

[0030] Among them, the data generated by the infrared distance sensor 306 and the contact sensor 802 are stored in real time for subsequent reference and comparison. Taking time as the X-axis and displacement distance as the Y-axis, the data are compared. The data generated when the sliding steel part 4 moves are linearly changed. Since the jamming occurs occasionally, when the data show fluctuating changes, the buzzer 302 can be used to give a reminder for maintenance.

[0031] In this solution, when the high-precision linear guide pair is working, an infrared distance sensor 306 is installed on the outer wall of the mounting plate 301. Under the action that the transmitting end of the infrared distance sensor 306 is located on the outer wall of the mounting plate 301 and the receiving end of the infrared distance sensor 306 is located on the outer wall of the end sealing cover 11, when the sliding steel part 4 makes a lateral displacement on the outer wall of the guide rail 1, the infrared distance sensor 306 generates data in real time according to the distance between the transmitting end and the receiving end. At the same time, the infrared distance sensor 306 generates an electrical signal and conducts it to the control panel 307 through a wire. The control panel 307 stores the operation data for subsequent reference. At the same time, under the action of the contact sensor 802 located in the inner cavity of the sliding groove 5, when the rolling steel ball 6 contacts the contact sensor 802, the contact sensor 802 generates an electrical signal and conducts it to the control panel 307 through a wire. When jamming occurs, the above data will show fluctuating changes. Subsequently, the control panel 307 controls the buzzer 302 to emit a beep, thereby prompting the staff to perform maintenance, thus solving the possible jamming phenomenon of the ball screw assembly during the movement process. If the jamming problem cannot be detected in time and maintenance is carried out on the ball screw assembly, it will lead to excessive wear of the equipment, thereby affecting the accuracy of the linear guide pair.

[0032] It is installed on the inner wall of the installation groove 9 through a limiting spring 801. A limiting plate 804 is slidably connected to the inner wall of the installation groove 9 on one side of the limiting spring 801. The limiting plate 804 is located on one side of the rolling steel ball 6, and the connection mode between the limiting plate 804 and the rolling steel ball 6 is a sliding connection. Under the action of this, the limiting spring 801 exerts an elastic extrusion force on the limiting plate 804, so that the limiting plate 804 slides outward on the inner wall of the installation groove 9. When the limiting plate 804 contacts the rolling steel ball 6, under the action of the connecting structure at the joint of the installation groove 9 and the sliding groove 5 being a communicating structure, the limiting plate 804 exerts a thrust on the rolling steel ball 6, causing the rolling steel ball 6 to slide on the inner wall of the sliding groove 5, and then making the rolling steel ball 6 fit on the inner wall of the limiting sliding groove 2 for fixation. Due to the elastic displacement of the rolling steel ball 6, regardless of the size of the assembly gap, the rolling steel ball 6 can be well fitted and fixed, thus making the displacement of the sliding steel part 4 more stable and the movement accuracy of the device better, thereby solving the problem that the assembly accuracy of the linear guide pair directly affects its working performance. If the assembly is improper, it may lead to too large or too small a gap between the guide rail and the slider, thereby affecting the operation accuracy and stability of the equipment.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision linear guide pair, comprising a guide rail (1), characterized in that: On the opposite outer walls of the guide rail (1), limit sliding grooves (2) are provided. One end of the guide rail (1) is equipped with a distance measuring component (3). A sliding steel part (4) is slidably connected to the outer wall of the guide rail (1). A sliding groove (5) is provided on the inner wall of the sliding steel part (4). A rolling steel ball (6) is slidably connected to the inner wall of the sliding groove (5). One end of the rolling steel ball (6) is slidably connected to the inner wall of the limit sliding groove (2). A steel ball cage (7) is installed on the outer wall of the rolling steel ball (6). The steel ball cage (7) is located in the inner cavity of the sliding groove (5), and multiple groups of rolling steel balls (6) are provided and are respectively located on the outer wall of the steel ball cage (7). The connection mode between the rolling steel ball (6) and the limit sliding groove (2) is sliding connection. A limit component (8) is provided on the inner wall of the sliding steel part (4). An installation groove (9) is provided on one side of the sliding groove (5) and on the inner wall of the sliding steel part (4). Rotary devices (10) are installed on the opposite side walls of the sliding steel part (4). An end sealing end cover (11) is installed on the outer wall of the rotary device (10). An oil nozzle (12) is embedded and installed on the outer wall of the end sealing end cover (11).

2. The linear guide pair with high precision according to claim 1, wherein: The distance measuring component (3) includes a mounting plate (301). The mounting plate (301) is installed on the side wall of the guide rail (1). A buzzer (302) is installed on the outer wall of the mounting plate (301). Fixed rods (303) are symmetrically arranged on the outer wall of the mounting plate (301). One end of the fixed rod (303) is installed with a limit rubber pad (305) through a bolt (304). An infrared distance measuring sensor (306) is installed on one side of the fixed rod (303) and on the outer wall of the mounting plate (301). A control panel (307) is installed on one side of the fixed rod (303) and on the outer wall of the mounting plate (301).

3. A high-precision linear guide pair according to claim 2, characterized in that: The limit component (8) includes a limit spring (801), a contact sensor (802) and a lubricating oil sensor (803). The limit spring (801) is installed on the inner wall of the installation groove (9). A limit plate (804) is slidably connected to the inner wall of the installation groove (9) on one side of the limit spring (801).

4. A high-precision linear guide pair according to claim 3, characterized in that: The limit plate (804) is located on one side of the rolling steel ball (6). The connection mode between the limit plate (804) and the rolling steel ball (6) is sliding connection. A contact sensor (802) is embedded and installed on one side of the rolling steel ball (6) and on the inner wall of the sliding groove (5). A lubricating oil sensor (803) is embedded and installed on the inner wall of the sliding groove (5).

5. The linear guide pair with high precision according to claim 1, wherein: Multiple groups of limit sliding grooves (2) are provided and are respectively located on the opposite outer walls of the guide rail (1). The sliding steel part (4) is slidably connected to the inner wall of the limit sliding groove (2) through the rolling steel ball (6). The cross section of the sliding groove (5) is a loop structure, and multiple groups of sliding grooves (5) are provided and are respectively located on the inner wall of the sliding steel part (4).

6. A high-precision linear guide pair according to claim 4, characterized in that: The cross-section of the steel ball cage (7) is a loop structure. The connection between the mounting groove (9) and the sliding groove (5) is a communicating structure. There are two sets of rotators (10) respectively located on the opposite side walls of the sliding steel part (4). The receiving end of the infrared distance measuring sensor (306) is located on one side of the oil nozzle (12).

7. A high-precision linear guide pair according to claim 6, characterized in that: The limit rubber pad (305) is located on one side of the infrared distance measuring sensor (306), and the limit rubber pad (305) protects the infrared distance measuring sensor (306). There are multiple sets of limit springs (801) arranged from left to right and respectively located on the inner wall of the mounting groove (9). The limit plate (804) limits the rolling steel balls (6). The lubricating oil sensor (803) is located on one side of the contact sensor (802).

8. The linear guide pair with high precision according to claim 7, characterized in that: The transmitting end of the infrared distance measuring sensor (306) is located on the outer wall of the mounting plate (301), and the receiving end of the infrared distance measuring sensor (306) is located on the outer wall of the end sealing end cover (11). The control panel (307) is respectively connected to the buzzer (302), the infrared distance measuring sensor (306), the contact sensor (802), and the lubricating oil sensor (803) through wires, and the connection method is electrical connection.

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