Numerically controlled machine tool shaft sleeve

Abstract

This utility model discloses a CNC machine tool bushing, comprising a bushing body, an oil reservoir inside the bushing body, an oil injection pipe fixedly connected to the inner side wall of the bushing body, a spring fixedly connected to the inner side wall of the oil injection pipe, a piston fixedly connected to the end of the spring away from the oil injection pipe, a push block fixedly connected to the side surface of the piston, a second one-way plug fixedly connected to the end of the oil injection pipe away from the push block, a first one-way plug fixedly connected to the side surface of the oil injection pipe, an oil guide groove inside the bushing body, and an oil outlet hole on the inner side of the bushing body. Through these components, by pressing the push block, the piston reciprocates in the oil injection pipe under the action of the push block and the spring, drawing lubricating oil from the oil reservoir through the first one-way plug into the oil injection pipe, and then discharging the lubricating oil from the second one-way plug into the oil guide groove. This allows the lubricating oil to flow along the oil guide groove and from the oil outlet hole to the space between the bushing and the shaft, reducing the friction between the bushing and the shaft.

Description

Technical Field

[0001] This utility model relates to the field of bushing technology, and in particular to a CNC machine tool bushing. Background Technology

[0002] Existing CNC machine tool bushings all feature an oil reservoir, oil outlet, and oil filling hole to automatically discharge lubricating oil, providing lubrication and reducing wear between the bushing and the shaft. However, they lack a discharge component at the oil reservoir, causing lubricating oil to continuously leak out through the oil outlet. For example, a machine tool bushing disclosed in Chinese Patent Application No. CN202223415434.7, while achieving self-lubrication through its oil reservoir, oil outlet, and oil filling hole, thus reducing wear between the bushing and the shaft and extending the bushing's service life, and eliminating the need for periodic lubrication, lacks a component to control lubricating oil discharge at the oil outlet. This results in lubricating oil continuously flowing out until it is completely drained, causing lubricating oil waste and contamination. Furthermore, excessive lubricating oil discharge during use increases friction between the shaft and the bushing, potentially leading to temperature increases and affecting the normal operation of the equipment, thus limiting its usability. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a CNC machine tool bushing. By setting an oil reservoir in the bushing and installing an oil spray pipe in the oil reservoir, the piston is pushed by a pressing block to reciprocate in the oil spray pipe, so that the lubricating oil in the oil reservoir can be sucked into the oil spray pipe through the suction pipe and then discharged from the one-way plug. The lubricating oil reduces the wear between the bushing and the rotating shaft, and improves the service life of the bushing. Furthermore, by setting the bushing body with mutually mating internal and external threads, multiple bushing bodies can be combined together according to the length of the rotating shaft, which improves the practicality and versatility of the bushing.

[0004] This utility model also provides a CNC machine tool bushing as described above, comprising: a bushing body, an oil reservoir inside the bushing body, an oil injection pipe fixedly connected to the inner side wall of the bushing body, a spring fixedly connected to the inner side wall of the oil injection pipe, a piston fixedly connected to the end of the spring away from the oil injection pipe, a push block fixedly connected to the side surface of the piston, a second one-way plug fixedly connected to the end of the oil injection pipe away from the push block, a first one-way plug fixedly connected to the side surface of the oil injection pipe, an oil guide groove inside the bushing body, and an oil outlet hole on the inner side of the bushing body. Through these components, by pressing the push block, the piston will reciprocate in the oil injection pipe under the action of the push block and the spring, drawing lubricating oil from the oil reservoir through the first one-way plug into the oil injection pipe, and then discharging the lubricating oil from the second one-way plug into the oil guide groove. This allows the lubricating oil to flow along the oil guide groove and from the oil outlet hole to the space between the bushing and the shaft, reducing the friction between the bushing and the shaft.

[0005] According to the present invention, in a CNC machine tool bushing, the end of the actuating block away from the piston is located outside the bushing body, and the side surface of the actuating block is slidably connected to the bushing body. The actuating block can be pressed from outside the bushing body.

[0006] According to the present invention, in a CNC machine tool bushing, the oil injection pipe is located inside the oil reservoir, and the side surface of the piston is slidably connected to the oil injection pipe. The piston is moved by pressing the push-button.

[0007] According to the present invention, in a CNC machine tool bushing, a suction pipe is fixedly connected to one end of the oil injection pipe near the one-way plug, and the suction pipe is located inside the oil reservoir. The suction pipe allows oil from the oil reservoir to be drawn into the oil injection pipe.

[0008] According to the present invention, a CNC machine tool bushing has a sealing plug fixedly connected to the inner side wall of the bushing body, and a sealing plug is detachably connected to the inner side of the sealing plug. Oil is injected into the oil guide groove from the sealing plug, and then the sealing plug is used to seal the sealing plug.

[0009] According to the present invention, a CNC machine tool bushing has an internal thread on its inner side wall and an external thread on its side surface. It can be used to connect mounting plates or other bushings using both internal and external threads.

[0010] According to the present invention, a CNC machine tool bushing has a connecting block threadedly connected to the inner side of the bushing body, and a mounting plate is fixedly connected to the end of the connecting block away from the bushing body. The bushing can be fixed by the mounting plate.

[0011] According to the present invention, a CNC machine tool bushing has a mounting hole on its upper surface, and the internal thread and external thread are matched. The bushing can be installed by passing a screw through the mounting hole. Beneficial effects

[0012] Compared with existing technologies, by setting an oil reservoir in the bushing and installing an oil injection pipe in the oil reservoir, and by pushing the piston with a pusher block to reciprocate in the oil injection pipe, the lubricating oil in the oil reservoir can be drawn into the oil injection pipe through the suction pipe and then discharged from the one-way plug. The lubricating oil reduces the wear between the bushing and the shaft, and improves the service life of the bushing. Furthermore, by setting interlocking internal and external threads on the bushing body, multiple bushing bodies can be combined and used according to the length of the shaft, which improves the practicality and versatility of the bushing. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is an overall structural diagram of the CNC machine tool bushing of this utility model;

[0015] Figure 2 This is a structural diagram of the mounting plate for the CNC machine tool bushing of this utility model;

[0016] Figure 3 This is a structural diagram of the bushing body of the CNC machine tool bushing of this utility model;

[0017] Figure 4 This is a cross-sectional view of the bushing body of the CNC machine tool bushing of this utility model;

[0018] Figure 5 For the CNC machine tool bushing of this utility model Figure 4 Partial structural diagram at point A in the middle.

[0019] Legend:

[0020] 1. Bushing body; 2. Sealing plug; 3. External thread; 4. Mounting plate; 5. Mounting hole; 6. Oil outlet hole; 7. Connecting block; 8. Pressing block; 9. Internal thread; 10. Sealing plug port; 11. Oil reservoir; 12. Suction pipe; 13. Oil injection pipe; 14. Spring; 15. Piston; 16. One-way plug one; 17. One-way plug two; 18. Oil guide groove. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-5 This utility model discloses a CNC machine tool bushing, comprising: a bushing body 1, an oil reservoir 11 inside the bushing body 1, an oil spray pipe 13 fixedly connected to the inner side wall of the bushing body 1, the oil spray pipe 13 being located inside the oil reservoir 11, a spring 14 fixedly connected to the inner side wall of the oil spray pipe 13, a piston 15 fixedly connected to the end of the spring 14 away from the oil spray pipe 13, the side surface of the piston 15 being slidably connected to the oil spray pipe 13, a push block 8 fixedly connected to the side surface of the piston 15, the end of the push block 8 away from the piston 15 being located outside the bushing body 1, the side surface of the push block 8 being slidably connected to the bushing body 1, a one-way plug 2 17 fixedly connected to the end of the oil spray pipe 13 away from the push block 8, a one-way plug 16 fixedly connected to the side surface of the oil spray pipe 13, an oil guide groove 18 inside the bushing body 1, and an oil outlet hole 6 on the inner side surface of the bushing body 1.

[0023] Specifically, when lubricating oil needs to be added between the bushing body 1 and the bearing after the bushing is installed, the push block 8 on the outside of the bushing body 1 can be pressed. The push block 8 will push the piston 15 to move in the oil injection pipe 13 and reciprocate under the action of the spring 14 and the push block 8. When the piston 15 is pulled back by the spring 14, the lubricating oil in the oil reservoir 11 can be drawn into the oil injection pipe 13 through the one-way plug 16. When the piston 15 is pushed forward, the lubricating oil in the oil injection pipe 13 can be sprayed into the oil guide groove 18 through the one-way plug 17. The lubricating oil flows along the oil guide groove 18 and flows out from the oil outlet 6 and flows between the rotating shaft and the bushing body 1.

[0024] A suction pipe 12 is fixedly connected to one end of the fuel injection pipe 13 near the one-way plug 16. The suction pipe 12 is located inside the oil reservoir 11. A sealing plug 10 is fixedly connected to the inner side wall of the bushing body 1. A sealing plug 2 is detachably connected to the inner side of the sealing plug 10.

[0025] Specifically, a sealing plug 10 is installed between the bushing body 1 and the oil reservoir 11. Both the sealing plug 10 and the sealing plug 2 are made of rubber material, which has good elasticity and sealing performance. During use, sealing oil can be injected into the oil reservoir 11 through the sealing plug 10, and then the sealing plug 2 is inserted to seal the sealing plug 10 to prevent the sealing oil from leaking out. The oil spray pipe 13 is equipped with a suction pipe 12. During the oil spraying process, the oil is sucked into the oil spray pipe 13 through the suction pipe 12 to transport the lubricating oil.

[0026] The inner wall of the bushing body 1 is provided with an internal thread 9, the side surface of the bushing body 1 is provided with an external thread 3, the inner side of the bushing body 1 is threadedly connected with a connecting block 7, the end of the connecting block 7 away from the bushing body 1 is fixedly connected with a mounting plate 4, the upper surface of the mounting plate 4 is provided with a mounting hole 5, and the internal thread 9 and the external thread 3 are matched with each other.

[0027] Specifically, the inner and outer surfaces of the bushing body 1 are respectively provided with internal threads 9 and external threads 3. The internal threads 9 and external threads 3 are matched with each other and can be used to combine multiple bushing bodies 1 together. The internal threads 9 can also be used to install the connecting block 7 on the bushing body 1. The mounting plate 4 connected to the connecting block 7 can be installed on the CNC machine tool by using screws through the mounting hole 5.

[0028] Working principle: Before use, remove the sealing plug 2 from the sealing plug opening 10 and inject lubricating oil into the oil reservoir 11 through the sealing plug opening 10. After completion, re-plug the sealing plug opening 10 with the sealing plug 2. Then, connect the mounting plate 4 to the bushing body 1 through the connecting block 7. According to the length of the rotating shaft, assemble the corresponding number of bushing bodies 1 together through the external thread 3 and the internal thread 9. Then, use screws to install the bushing on the CNC machine tool through the mounting plate 4. When it is necessary to add lubricating oil between the bushing body 1 and the bearing, The push block 8 on the outside of the bushing body 1 can be pressed. The push block 8 will push the piston 15 to move in the oil injection pipe 13 and reciprocate under the action of the spring 14 and the push block 8. When the piston 15 is pulled back by the spring 14, the lubricating oil in the oil reservoir 11 can be drawn into the oil injection pipe 13 through the one-way plug 16. When the piston 15 is pushed forward, the lubricating oil in the oil injection pipe 13 can be sprayed into the oil guide groove 18 through the one-way plug 2 17. The lubricating oil flows along the oil guide groove 18 and flows out from the oil outlet 6 and flows between the rotating shaft and the bushing body 1.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A CNC machine tool shaft sleeve, characterized by, include: The bushing body (1) has an oil reservoir (11) inside. An oil injection pipe (13) is fixedly connected to the inner side wall of the bushing body (1). A spring (14) is fixedly connected to the inner side wall of the oil injection pipe (13). A piston (15) is fixedly connected to the end of the spring (14) away from the oil injection pipe (13). An actuating block (8) is fixedly connected to the side surface of the piston (15). A one-way plug (17) is fixedly connected to the end of the oil injection pipe (13) away from the actuating block (8). A one-way plug (16) is fixedly connected to the side surface of the oil injection pipe (13). An oil guide groove (18) is provided inside the bushing body (1). An oil outlet hole (6) is provided on the inner side of the bushing body (1).

2. A CNC machine tool shaft sleeve according to claim 1, characterised in that, The end of the push block (8) away from the piston (15) is located outside the bushing body (1), and the side surface of the push block (8) is slidably connected to the bushing body (1).

3. A CNC machine tool shaft sleeve according to claim 1, wherein, The fuel injection pipe (13) is located inside the oil reservoir (11), and the side surface of the piston (15) is slidably connected to the fuel injection pipe (13).

4. The numerically controlled machine tool shaft sleeve according to claim 1, characterized in that, The fuel injection pipe (13) is fixedly connected to a suction pipe (12) at one end near the one-way plug (16), and the suction pipe (12) is located inside the oil reservoir (11).

5. A CNC machine tool bushing according to claim 1, characterized in that, The inner side wall of the bushing body (1) is fixedly connected to a sealing plug (10), and the inner side of the sealing plug (10) is detachably connected to a sealing plug (2).

6. A CNC machine tool bushing according to claim 1, characterized in that, The inner wall of the bushing body (1) is provided with an internal thread (9), and the side surface of the bushing body (1) is provided with an external thread (3).

7. A CNC machine tool bushing according to claim 6, characterized in that, The inner side of the bushing body (1) is threaded with a connecting block (7), and the end of the connecting block (7) away from the bushing body (1) is fixedly connected with a mounting plate (4).

8. A CNC machine tool bushing according to claim 7, characterized in that, The upper surface of the mounting plate (4) is provided with mounting holes (5), and the internal thread (9) and the external thread (3) are matched with each other.

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