Machine tool spindle with self-lubricating structure

Abstract

The utility model provides a machine tool spindle with a self-lubricating structure, and belongs to the technical field of machine tools. A main shaft; the oil way groove is formed in the circumferential surface of the main shaft; the bearing sleeves the circumferential surface of the main shaft; the oil storage box is fixedly connected to the circumferential surface of the main shaft; automatic lubrication is achieved through centrifugal force generated when the main shaft rotates, when the main shaft starts to rotate, the spring is compressed, the blocking ball leaves the first connecting hole, and lubricating oil in the oil storage box can enter the oil way groove through the first connecting hole and finally flow to the bearing; according to the design, timely and effective lubrication of the bearing can be ensured without manual intervention, the reliability and efficiency of equipment operation are greatly improved, and meanwhile, the maintenance cost is also reduced.

Description

Technical Field

[0001] This utility model belongs to the field of machine tool technology, and specifically relates to a machine tool spindle with a self-lubricating structure. Background Technology

[0002] The spindle of a CNC machine tool is an extremely important working component, undertaking the main operating tasks of the machine tool, such as cutting, drilling, and grinding. Its performance directly affects the machining accuracy, efficiency, and overall service life of the equipment. Therefore, the lubrication of the CNC machine tool spindle is particularly important. Proper lubrication can not only extend the service life of the spindle, but also significantly improve machining quality and production efficiency.

[0003] In traditional machine tool spindle designs, manual or timed lubrication systems are typically used to ensure the normal operation of critical components such as bearings. This method is not only labor-intensive and time-consuming, but also prone to accelerated wear and tear and shortened service life due to human negligence or untimely lubrication. Utility Model Content

[0004] The purpose of this invention is to provide a machine tool spindle with a self-lubricating structure, which aims to solve the problem in the prior art that relies on manual or timed lubrication systems to ensure the normal operation of key components such as bearings. This not only consumes manpower and time, but also easily leads to accelerated wear and shortened service life due to human negligence or untimely lubrication.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A machine tool spindle with a self-lubricating structure includes:

[0007] spindle;

[0008] Oil passage groove, the oil passage groove is formed on the circumferential surface of the main shaft;

[0009] A bearing, which is sleeved on the circumferential surface of the main shaft;

[0010] An oil reservoir is fixedly connected to the circumferential surface of the spindle.

[0011] The first connecting hole is located on the inner wall of the oil reservoir and communicates with the oil passage groove.

[0012] A spring, which is fixedly connected to the inner wall of the oil reservoir;

[0013] A blocking ball, which is fixedly connected to one side of the spring and matches the first connecting hole;

[0014] The oil filling hole is located on one side of the oil storage box;

[0015] The first threaded plug is threadedly connected to the oil injection hole.

[0016] A limiting component is disposed within the oil reservoir to restrict the position of the blocking ball.

[0017] As a preferred embodiment of this utility model, the limiting component includes a limiting block and a limiting hole. The limiting block is fixedly connected to one side of the oil storage box, and a limiting hole is opened on one side of the limiting block. A blocking ball is slidably connected in the limiting hole.

[0018] As a preferred embodiment of this utility model, an oil collection box is fixedly connected to the circumferential surface of the main shaft, and a second connecting hole is provided on the inner wall of the oil collection box, which communicates with the oil passage groove.

[0019] As a preferred embodiment of this utility model, an oil outlet hole is provided on one side of the oil collection box, and a second threaded plug is threadedly connected to the oil outlet hole.

[0020] As a preferred embodiment of this utility model, the upper end of the main shaft is provided with a positioning threaded hole, and there are multiple positioning threaded holes that are evenly distributed.

[0021] In a preferred embodiment of this invention, the spindle is made of alloy steel.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. In this solution, the device utilizes the centrifugal force generated when the spindle rotates to achieve automatic lubrication. When the spindle starts to rotate, the spring is compressed, the blocking ball leaves the first connecting hole, and the lubricating oil in the oil reservoir can enter the oil passage groove through the first connecting hole and eventually flow to the bearing. This design ensures that the bearing is lubricated in a timely and effective manner without manual intervention, which greatly improves the reliability and efficiency of equipment operation and reduces maintenance costs.

[0024] 2. In this solution, the lubricating oil after being lubricated by this device will flow out from the bearing and into the oil collection box, so that the lubricating oil can be reused. This not only helps to save resources and reduce costs, but also reduces the discharge of waste oil, which is beneficial to environmental protection. In addition, since the lubricating oil may be mixed with impurities during use, regular recycling and treatment of this lubricating oil can also help monitor the wear of equipment and detect potential problems in advance. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a front perspective view of the present invention;

[0027] Figure 2 This is a cross-sectional view of the present invention;

[0028] Figure 3 This is the first exploded view of this utility model;

[0029] Figure 4 This is the second exploded view of this utility model.

[0030] In the diagram: 1. Spindle; 2. Oil passage groove; 3. Oil reservoir; 4. First connecting hole; 5. Spring; 6. Plug ball; 7. Oil filling hole; 8. First threaded plug; 9. Limiting block; 10. Limiting hole; 11. Oil collection box; 12. Second connecting hole; 13. Oil outlet; 14. Second threaded plug; 15. Bearing; 16. Positioning threaded hole. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] Please see Figure 1-4 The present invention provides the following technical solution:

[0034] A machine tool spindle with a self-lubricating structure includes:

[0035] Spindle 1;

[0036] Oil passage groove 2 is formed on the circumferential surface of spindle 1;

[0037] Bearing 15 is sleeved on the circumferential surface of spindle 1;

[0038] Oil reservoir 3 is fixedly connected to the circumferential surface of spindle 1;

[0039] The first connecting hole 4 is opened on the inner wall of the oil storage box 3 and is connected to the oil passage 2;

[0040] Spring 5 is fixedly connected to the inner wall of oil reservoir 3;

[0041] The blocking ball 6 is fixedly connected to one side of the spring 5, and the blocking ball 6 matches the first connecting hole 4;

[0042] Oil filling hole 7 is located on one side of oil reservoir 3;

[0043] The first threaded plug 8 is threadedly connected to the oil injection hole 7.

[0044] A limiting component is provided inside the oil reservoir 3 to limit the position of the blocking ball 6.

[0045] In a specific embodiment of this utility model, the main shaft 1, as the core component of the entire device, is responsible for transmitting rotational power. The oil passage groove 2 guides the lubricating oil to the bearing 15. The oil reservoir 3 stores the lubricating oil. The first connecting hole 4 communicates with the oil passage groove 2 to ensure that the lubricating oil can flow smoothly into the oil passage groove 2. The spring 5 provides restoring force for the blocking ball 6. When the main shaft 1 rotates, the centrifugal force of the rotation of the main shaft 1 compresses the spring 5, causing the blocking ball 6 to move away from the first connecting hole 4. The lubricating oil then enters the oil passage groove 2 through the connecting hole 4. The oil flows to the bearing 15, thus automatically lubricating the bearing 15. When the spindle 1 stops rotating, the restoring force of the spring 5 will cause the plug ball 6 to continue to block the first connecting hole 4, preventing the lubricating oil from leaking out and causing waste. The oil filling hole 7 has threads, which makes it easy for personnel to add lubricating oil to the oil reservoir 3. The first threaded plug 8 is threadedly connected to the oil filling hole 7 to seal the oil filling hole 7 to prevent lubricating oil leakage. The limiting component mainly restricts the position of the plug ball 6, ensuring that the plug ball 6 will not move around when the centrifugal force of the spindle 1 drives the spring 5 to rotate.

[0046] Please refer to the details. Figure 1-4 The limiting component includes a limiting block 9 and a limiting hole 10. The limiting block 9 is fixedly connected to one side of the oil storage box 3. A limiting hole 10 is opened on one side of the limiting block 9, and a blocking ball 6 is slidably connected in the limiting hole 10.

[0047] In this embodiment: the limiting block 9 provides an installation platform for the limiting hole 10. The limiting hole 10 restricts the position of the blocking ball 6, ensuring that when the centrifugal force of the main shaft 1 drives the spring 5 to rotate, the blocking ball 6 will not be thrown out from all sides, causing the spring force of the spring 5 to fail to drive it back to its original position.

[0048] Please refer to the details. Figure 1-4 An oil collection box 11 is fixedly connected to the circumferential surface of the main shaft 1. A second connecting hole 12 is provided on the inner wall of the oil collection box 11, and the second connecting hole 12 is connected to the oil channel 2.

[0049] In this embodiment: the oil collection box 11 is used to collect the lubricating oil flowing out of the oil channel 2 to avoid waste; the second connecting hole 12 is connected to the oil channel 2 and is the channel for the flow of lubricating oil between the oil channel 2 and the oil collection box 11.

[0050] Please refer to the details. Figure 1-4 An oil outlet hole 13 is provided on one side of the oil collection box 11, and a second threaded plug 14 is threadedly connected to the oil outlet hole 13.

[0051] In this embodiment: the oil outlet 13 is provided with a thread, the oil outlet 13 is used to discharge the lubricated oil, so that the lubricated oil can be reused by personnel. The second threaded plug 14 is threadedly connected to the oil outlet 13 to seal the oil outlet 13 to prevent lubricating oil leakage.

[0052] Please refer to the details. Figure 1-4 The upper end of the spindle 1 is provided with a positioning threaded hole 16, and there are multiple positioning threaded holes 16 evenly distributed.

[0053] In this embodiment: multiple positioning threaded holes 16 at the upper end of the spindle 1 allow technicians to install balance blocks or adjust counterweights in these holes, thereby effectively reducing vibration and offset caused by imbalance and improving the rotational accuracy of the spindle 1.

[0054] Please refer to the details. Figure 1-4 The material of spindle 1 is alloy steel.

[0055] In this embodiment, the spindle 1 is made of alloy steel, which has high strength, high hardness and good wear resistance.

[0056] The working principle and usage process of this utility model are as follows: Personnel inject lubricating oil into the oil storage box 3 through the oil injection hole 7, and then plug the oil injection hole 7 with the first threaded plug 8. When the main shaft 1 starts to rotate, due to centrifugal force, the spring 5 is compressed, causing the blocking ball 6 to leave the first connecting hole 4. At this time, the lubricating oil in the oil storage box 3 enters the oil passage groove 2 through the first connecting hole 4 and finally flows to the bearing 15, achieving automatic lubrication of the bearing 15. The limiting block 9 and the limiting hole 10 ensure that the blocking ball 6 will not be flung around due to the centrifugal force of the main shaft 1's rotation, thus preventing the spring force of the spring 5 from causing it to return to its original position. The lubricating oil after lubrication will flow out from the bearing 15 and into the oil collection box 11, where personnel can reuse the lubricating oil. When the main shaft 1 stops rotating, the restoring force of the spring 5 will cause the blocking ball 6 to continue blocking the first connecting hole 4, preventing lubricating oil leakage and avoiding waste.

[0057] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A machine tool spindle with a self-lubricating structure, characterized in that, include: Main spindle (1); Oil passage groove (2), the oil passage groove (2) is formed on the circumferential surface of the main shaft (1); Bearing (15), the bearing (15) is sleeved on the circumferential surface of the main shaft (1); Oil reservoir (3), which is fixedly connected to the circumferential surface of the main shaft (1); The first connecting hole (4) is opened on the inner wall of the oil storage box (3) and is connected to the oil passage groove (2); Spring (5), which is fixedly connected to the inner wall of oil reservoir (3); A blocking ball (6) is fixedly connected to one side of the spring (5), and the blocking ball (6) matches the first connecting hole (4); Oil injection hole (7), the oil injection hole (7) is opened on one side end of oil storage box (3); The first threaded plug (8) is threadedly connected to the oil injection hole (7); A limiting component is disposed within the oil reservoir (3) to restrict the position of the blocking ball (6).

2. A machine tool spindle with a self-lubricating structure according to claim 1, characterized in that: The limiting component includes a limiting block (9) and a limiting hole (10). The limiting block (9) is fixedly connected to one side of the oil storage box (3). A limiting hole (10) is opened on one side of the limiting block (9). A blocking ball (6) is slidably connected in the limiting hole (10).

3. A machine tool spindle with a self-lubricating structure according to claim 2, characterized in that: An oil collection box (11) is fixedly connected to the circumferential surface of the main shaft (1). The inner wall of the oil collection box (11) is provided with a second connecting hole (12), which is connected to the oil channel (2).

4. A machine tool spindle with a self-lubricating structure according to claim 3, characterized in that: An oil outlet hole (13) is provided on one side of the oil collection box (11), and a second threaded plug (14) is threadedly connected to the oil outlet hole (13).

5. A machine tool spindle with a self-lubricating structure according to claim 4, characterized in that: The upper end of the main shaft (1) is provided with a positioning threaded hole (16), and there are multiple positioning threaded holes (16) evenly distributed.

6. A machine tool spindle with a self-lubricating structure according to claim 5, characterized in that: The main shaft (1) is made of alloy steel.

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