Machine tool linear sliding rail with self-lubricating function

Abstract

The utility model discloses a self-lubricating machine tool linear slide rail which comprises a slide rail body, a mounting plate is slidably mounted at the top of the slide rail body, fixing shafts are symmetrically mounted at four corners of the mounting plate, lantern rings are mounted on the outer sides of the fixing shafts in an interference fit mode, idler wheels are mounted on the outer sides of the lantern rings in an interference fit mode, and the two idler wheels are oppositely arranged. When the rolling wheel is controlled to move along the outer side of the sliding rail, lubricating oil in the oil injection groove between the lantern ring and the rolling wheel flows to the first oil outlet hole through the gap between the rolling wheel and the circular ring and is discharged from the first oil outlet hole, the position, making contact with the sliding rail, of the inclined face of the rolling wheel can be lubricated in real time, and the stability of object movement is improved; lubricating oil in the oil injection groove located between the lantern ring and the roller flows to the second oil outlet hole through the gap between the lantern ring and the circular ring and is discharged out of the second oil outlet hole, the relative rotation position between the lantern ring and the fixing shaft can be lubricated, and the stability of relative rotation between the roller and the fixing shaft is improved.

Description

Technical Field

[0001] This utility model relates to the field of linear guide rail technology, specifically to a self-lubricating linear guide rail for machine tools. Background Technology

[0002] Linear guideways are devices that can withstand a certain torque and achieve high-precision linear motion under high loads. They are used in machine tools and other locations for conveying workpieces. Linear guideways can be divided into roller linear guideways, cylindrical linear guideways, and ball linear guideways, etc. Different types of linear guideways can be used in different situations.

[0003] The main function of roller linear guides is to support and guide moving parts, enabling them to reciprocate linearly in a given direction. During use, roller linear guides move through the rolling contact between the rollers and the guide rail. However, with prolonged use, the large contact area between the inclined surfaces of the rollers and the guide rail leads to excessive wear, requiring frequent application of lubricant, which is inconvenient. Some existing roller linear guides are equipped with self-lubricating devices, but these only lubricate the contact area between the roller's shaft and the roller itself, not the area between the roller and the guide rail. Utility Model Content

[0004] The purpose of this invention is to provide a self-lubricating linear guideway for machine tools to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-lubricating linear guide rail for machine tools, comprising a guide rail, a mounting plate slidably mounted on the top of the guide rail, fixed shafts symmetrically mounted at the four corners of the mounting plate, a collar with an interference fit mounted on the outer side of the fixed shaft, a roller with an interference fit mounted on the outer side of the collar, two rollers arranged opposite to each other, an oil injection groove formed between the collar and the roller, a first oil outlet hole arranged in a ring array with the central axis of the roller as the axis of the roller on the inclined surface, a second oil outlet hole arranged in a ring array with the central axis of the collar as the axis of the collar in the middle, and a circular ring installed between the collar and the inner wall of the roller.

[0006] As a further preferred embodiment of this technical solution, a fixing groove is provided between the inner wall of the roller and the outer side of the collar.

[0007] As a further preferred embodiment of this technical solution, the end of the first oil outlet is chamfered.

[0008] As a further preferred embodiment of this technical solution, the end cap is installed at the end of the roller with an interference fit.

[0009] As a further preferred embodiment of this technical solution, the bottom end of the fixed shaft is provided with a threaded hole, and a screw is installed at the bottom end of the fixed shaft. The screw is fixedly connected to the fixed shaft through the threaded hole.

[0010] As a further preferred embodiment of this technical solution, the first oil outlet is located at the center of the inclined surface of the roller.

[0011] As a further preferred embodiment of this technical solution, a limiting ring is fixedly installed on the top of the fixed shaft.

[0012] This utility model provides a self-lubricating linear guideway for machine tools, which has the following beneficial effects:

[0013] (1) When the roller moves along the outside of the slide rail, the lubricating oil in the oil groove between the collar and the roller will flow through the gap between the roller and the collar to the first oil outlet and be discharged from the first oil outlet. This can lubricate the position where the roller's inclined surface contacts the slide rail in real time, thereby improving the stability of the object's movement.

[0014] (2) When the roller moves along the outside of the slide rail, the collar connected to the roller will rotate relative to the outside of the fixed shaft. The lubricating oil in the oil groove between the collar and the roller will flow through the gap between the collar and the ring to the second oil outlet and be discharged from the second oil outlet. This can lubricate the relative rotation position between the collar and the fixed shaft and improve the stability of the relative rotation between the roller and the fixed shaft. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall exploded structure of this utility model;

[0017] Figure 3 This is a partial structural schematic diagram of the present invention;

[0018] Figure 4 This is one of the partial cross-sectional structural schematic diagrams of this utility model;

[0019] Figure 5 This is a partial cross-sectional exploded view of the present invention;

[0020] Figure 6 This is the second partial cross-sectional structural schematic diagram of the present invention;

[0021] In the diagram: 1. Slide rail; 2. Mounting plate; 3. Fixed shaft; 4. Collar; 5. Roller; 6. Oil filling groove; 7. First oil outlet; 8. Second oil outlet; 9. Circular ring; 10. Fixed groove; 11. Chamfer; 12. End cap; 13. Threaded hole; 14. Screw; 15. Restricting ring. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model provides a technical solution: such as Figures 1 to 6 As shown in this embodiment, a self-lubricating linear guideway for machine tools includes a guideway 1. A mounting plate 2 is slidably mounted on the top of the guideway 1. Fixed shafts 3 are symmetrically mounted at the four corners of the mounting plate 2. A collar 4 is interference-fitted onto the outer side of the fixed shaft 3. Rollers 5 are interference-fitted onto the outer side of the collar 4. Two rollers 5 are arranged opposite each other, positioned on one side of the guideway 1. An oil inlet groove 6 is formed between the collar 4 and the rollers 5. A first oil outlet hole 7 is arranged in a circular array around the central axis of the roller 5 on the inclined surface of the roller 5. A second oil outlet hole 8 is arranged in a circular array around the central axis of the collar 4 in the middle. A circular ring 9 is installed between the collar 4 and the inner wall of the roller 5, and the circular ring 9 is movably mounted on the inner wall of the collar 4 and the inner wall of the roller 5. When the control roller 5 moves along the outside of the slide rail 1, the lubricating oil inside the oil filling groove 6 between the collar 4 and the roller 5 will flow through the gap between the roller 5 and the ring 9 to the first oil outlet 7 and be discharged from the first oil outlet 7. This can provide real-time lubrication to the position where the inclined surface of the roller 5 contacts the slide rail 1, improving the stability of the object's movement. When the control roller 5 moves along the outside of the slide rail 1, the collar 4 connected to the roller 5 will rotate relative to the outside of the fixed shaft 3. The lubricating oil inside the oil filling groove 6 between the collar 4 and the roller 5 will flow through the gap between the collar 4 and the ring 9 to the second oil outlet 8 and be discharged from the second oil outlet 8. This can lubricate the relative rotation position between the collar 4 and the fixed shaft 3, improving the stability of the relative rotation between the roller 5 and the fixed shaft 3.

[0024] like Figures 1 to 6 As shown, a fixing groove 10 is provided between the inner wall of the roller 5 and the outer side of the collar 4.

[0025] Positioning the ring 9 inside the fixing groove 10 allows for the positioning of the ring 9, preventing it from moving freely inside the oil filling groove 6.

[0026] like Figures 1 to 6 As shown, the end of the first oil outlet 7 is chamfered 11.

[0027] When the lubricating oil is discharged from the first oil outlet 7, the lubricating oil can increase the contact area with the slide rail 1 through the edge of the chamfer 11, thereby increasing the lubrication area of ​​the linear slide rail.

[0028] like Figures 1 to 6 As shown, the end cap 12 is installed at the end of the roller 5 with an interference fit.

[0029] The space of the oil filling groove 6 can be sealed by the end cap 12.

[0030] like Figures 1 to 6 As shown, a threaded hole 13 is provided at the bottom end of the fixed shaft 3, and a screw 14 is installed at the bottom end of the fixed shaft 3. The screw 14 is fixedly connected to the fixed shaft 3 through the threaded hole 13.

[0031] When assembling the fixed shaft 3 and the roller 5, the roller 5 can be controlled above the screw 14 by assembling the screw 14 with the fixed shaft 3.

[0032] like Figures 1 to 6 As shown, the first oil outlet 7 is located in the middle of the inclined surface of the roller 5.

[0033] Symmetrical lubrication can be applied to the contact area between the slide rail 1 and the roller 5.

[0034] like Figures 1 to 6 As shown, a limiting ring 15 is fixedly installed on the top of the fixed shaft 3.

[0035] The roller 5 can be positioned between the screw 14 and the limiting ring 15, and the roller 5 can be controlled to rotate in the area of ​​the fixed shaft 3 between the screw 14 and the limiting ring 15.

[0036] This utility model provides a self-lubricating linear guideway for machine tools, the specific working principle of which is as follows:

[0037] When the device is in use, four sets of rollers 5, which are slid up and down opposite each other, are slid on the outside of the slide rail 1, and the fixed shaft 3 is fixed to the mounting plate 2 by means of nuts. When the rollers 5 are controlled to move along the outside of the slide rail 1, the lubricating oil in the oil groove 6 between the collar 4 and the rollers 5 will flow through the gap between the rollers 5 and the ring 9 to the first oil outlet 7 and be discharged from the first oil outlet 7. This can provide real-time lubrication to the position where the inclined surface of the rollers 5 contacts the slide rail 1, thereby improving the stability of the movement of objects.

[0038] When the control roller 5 moves along the outside of the slide rail 1, the collar 4 connected to the roller 5 will rotate relative to the outside of the fixed shaft 3. The lubricating oil inside the oil groove 6 between the collar 4 and the roller 5 will flow through the gap between the collar 4 and the ring 9 to the second oil outlet 8 and be discharged from the second oil outlet 8. This can lubricate the relative rotation position between the collar 4 and the fixed shaft 3 and improve the stability of the relative rotation between the roller 5 and the fixed shaft 3.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machine tool linear slide with self-lubrication, comprising a slide rail (1), a mounting plate (2) is slidingly mounted on the top of the slide rail (1), characterized in that: The four corners of the mounting plate (2) are symmetrically mounted with fixed shafts (3), the outer sides of the fixed shafts (3) are mounted with sleeves (4) in interference fit, the outer sides of the sleeves (4) are mounted with rollers (5) in interference fit, the two rollers (5) are oppositely arranged, the oil injection grooves (6) are formed between the sleeve (4) and the roller (5), the inclined surfaces of the roller (5) are annularly arrayed with the first oil outlet holes (7) opened with the central axis of the roller (5) as the shaft, the middle part of the sleeve (4) is annularly arrayed with the second oil outlet holes (8) opened with the central axis of the sleeve (4) as the shaft, and the circular rings (9) are mounted between the inner walls of the sleeve (4) and the roller (5).

2. A machine tool linear slide with self-lubrication according to claim 1, characterized in that: The inner wall of the roller (5) and the outer side of the sleeve (4) are provided with the fixed grooves (10).

3. A machine tool linear slide with self-lubrication according to claim 1, characterized in that: The end of the first oil outlet hole (7) is provided with the chamfer (11).

4. A machine tool linear slide with self-lubrication according to claim 2, characterized in that: The end of the roller (5) is mounted with the end cover (12) in interference fit.

5. The self-lubricating linear slide of claim 1, wherein: The bottom end of the fixed shaft (3) is provided with the threaded hole (13), and the bottom end of the fixed shaft (3) is mounted with the screw (14) in fixed connection through the threaded hole (13).

6. The self-lubricating machine tool linear slide of claim 1, wherein: The first oil outlet hole (7) is arranged at the middle part of the inclined surface of the roller (5).

7. A machine tool linear slide with self-lubrication according to claim 5, characterized in that: The top of the fixed shaft (3) is fixedly mounted with the limiting ring (15).

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