Main shaft sealing mechanism
By designing the spindle sealing mechanism, the sealing is achieved using the staggered structure of the rotating ring and the bearing collar, the problem of low practicality of conventional sealing mechanisms is solved and the stability and life of the machine tool are improved.
Patent Information
- Application Number
- CN202421303147.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-07
AI Technical Summary
The overall structure of the conventional rotating sealing mechanism is complicated, and it is troublesome to install and disassemble. Some structures are simple and have low sealing effect, resulting in low practicality.
A spindle sealing mechanism is designed to drive the rotation of the rotary ring through the spindle, and sealing is achieved using the staggered structure between the rotary ring and the bearing sleeve ring, which increases the difficulty of oil stain passing through and prevents oil stain from falling and burning the bearing at the tail end of the spindle.
It achieves a better sealing effect, meets the needs of long-term and stable production, and increases the service stability and service life of the machine tool.
Smart Images
Figure CN222479436U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of numerically controlled machine tools, and in particular relates to a main shaft sealing mechanism. Background Art
[0002] CNC machine tools are digitally controlled machine tools, that is, they are automated machine tools equipped with a program control system; their spindles require a rotating sealing mechanism to prevent oil and dirt from entering the machine body.
[0003] Since the overall structure of the conventional rotary sealing mechanism is relatively complex, the installation and disassembly are relatively troublesome, and the sealing effect of some rotary sealing mechanisms with simple structures is relatively low, resulting in the problem of relatively low practicality of the conventional sealing mechanism.
[0004] To this end, we propose a spindle sealing mechanism to solve the above problems. Utility Model Content
[0005] The utility model aims to solve the problem of low practicability of conventional sealing mechanisms and proposes a main shaft sealing mechanism.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A main shaft sealing mechanism includes a main shaft, a rotating ring is fixedly connected to the outside of the main shaft, a bearing ring is rotatably sleeved on the outside of the rotating ring, a fixed ring is fixedly sleeved on the bearing ring, the bearing ring is embedded in the fixed ring, and a gap is left between the bottom of the bearing ring and the fixed ring. When the main shaft rotates, the rotating ring is driven to rotate by the main shaft. During the process, the staggered structure between the rotating ring and the bearing ring is used to better seal the main shaft to prevent oil from falling and burning the bearing at the tail end of the main shaft, which can meet the needs of long-term stable production and correspondingly increase the stability of machine tools and the service life of machine tools.
[0008] Preferably, the main shaft is covered with a leather ring, which is located inside the rotating ring. The leather ring is used to increase the sealing performance between the rotating ring and the main shaft.
[0009] Preferably, a reinforcement ring is fixedly connected to the outside of the main shaft. The reinforcement ring is first put on the main shaft, and then the leather ring is inserted into the rotating ring, and the rotating ring and the leather ring are put on the main shaft, and the main shaft is firmly inserted into the rotating ring and the reinforcement ring to keep it fixed, and the reinforcement ring is used to increase the inward sliding resistance of the rotating ring.
[0010] Preferably, the rotating ring comprises a first ring body, and a sealing groove is formed on the first ring body, through which the bearing ring is embedded, so as to increase the difficulty of oil dirt passing through and further improve the sealing performance.
[0011] Preferably, the rotating ring further comprises a convex ring, which is fixedly connected to the outer end of the first ring body. The convex ring is rotatably embedded in the bearing ring to increase the difficulty of oil and dirt passing through, thereby ensuring the sealing of the rotating ring and the bearing ring against oil and dirt.
[0012] Preferably, the bearing sleeve ring comprises a sleeve body, and an oil seal groove is formed at the inner end of the sleeve body. The convex ring seal is embedded in the oil seal groove to prevent oil dirt from passing through.
[0013] Preferably, the fixing ring comprises a second ring body, and a fixing groove is formed on the second ring body, so that the fixing ring and the bearing sleeve ring can be fixedly docked with each other conveniently through the fixing groove.
[0014] In summary, the technical effects and advantages of the utility model are as follows:
[0015] 1. When the spindle rotates, the rotating ring is driven to rotate through the spindle. During the process, the staggered structure between the rotating ring and the bearing ring is used to better seal the spindle to prevent oil from falling and burning the bearing at the tail end of the spindle. This can meet the needs of long-term stable production and correspondingly increase the stability of the machine tool and the service life of the machine tool.
[0016] 2. First put the reinforcement ring on the main shaft, then insert the leather ring into the rotating ring, put the rotating ring and the leather ring on the main shaft, use the main shaft to firmly insert the rotating ring and the reinforcement ring to keep them fixed, and use the reinforcement ring to increase the inward sliding resistance of the rotating ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the rotating ring structure of the utility model;
[0019] Figure 3 This is a schematic diagram of the bearing ring structure of the utility model;
[0020] Figure 4 It is a schematic diagram of the fixing ring structure of the utility model.
[0021] In the figure: 1, main shaft; 2, rotating ring; 3, bearing ring; 4, fixed ring; 5, reinforcement ring; 6, leather ring; 21, first ring body; 22, sealing groove; 23, convex ring; 31, sleeve body; 32, oil seal groove; 41, second ring body; 42, fixed groove. DETAILED DESCRIPTION
[0022] The technical solutions in the utility model embodiments will be described clearly and completely below in conjunction with the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, rather than all of the embodiments.
[0023] Reference Figure 1 A main shaft sealing mechanism includes a main shaft 1, a rotating ring 2 is fixedly connected to the outside of the main shaft 1, a bearing ring 3 is rotatably sleeved on the outside of the rotating ring 2, a fixing ring 4 is fixedly sleeved on the bearing ring 3, the bearing ring 3 is embedded in the fixing ring 4, and a gap is left at the bottom of the bearing ring 3 and the fixing ring 4. The fixing ring 4 is fixed to the target body.
[0024] Reference Figure 1 The main shaft 1 is covered with a leather ring 6 on its outside, and the leather ring 6 is located inside the rotating ring 2. The leather ring 6 is used to increase the sealing between the rotating ring 2 and the main shaft 1.
[0025] Reference Figure 1 , the outside of the main shaft 1 is also fixedly connected with a reinforcement ring 5. First, the reinforcement ring 5 is put on the main shaft 1, and then the leather ring 6 is inserted into the rotating ring 2, and the rotating ring 2 and the leather ring 6 are put on the main shaft 1, and the main shaft 1 is firmly inserted into the rotating ring 2 and the reinforcement ring 5 to keep it fixed, and the reinforcement ring 5 is used to increase the firmness.
[0026] Reference Figure 1 and 2 The rotating ring 2 includes a first ring body 21, and a sealing groove 22 is provided on the first ring body 21. The bearing ring 3 is embedded in the sealing groove 22, which increases the difficulty of oil pollution passing through.
[0027] Reference Figure 1 and 2 The rotating ring 2 also includes a convex ring 23, which is fixedly connected to the outer end of the first ring body 21. The convex ring 23 is rotatably embedded in the bearing sleeve ring 3 to increase the difficulty of oil pollution passing through.
[0028] Reference Figure 1 , 2 3, the bearing sleeve ring 3 comprises a sleeve body 31, and an oil seal groove 32 is formed at the inner end of the sleeve body 31. The convex ring 23 is sealed and embedded in the oil seal groove 32.
[0029] Reference Figure 1 , 2 , 3 and 4, the fixing ring 4 includes a second ring body 41, the second ring body 41 is fixed to the target body, and a fixing groove 42 is formed on the second ring body 41. The sleeve body 31 is fixedly embedded in the fixing groove 42.
[0030] Working principle: When the main shaft 1 rotates, the rotating ring 2 is driven to rotate through the main shaft 1. During the process, the staggered structure between the rotating ring 2 and the bearing ring 3 is used to better seal the main shaft to prevent oil from falling and burning the bearing at the tail end of the main shaft, which can meet the needs of long-term stable production and increase the stability of the machine tool and the service life of the machine tool accordingly. The leather ring 6 is used to increase the sealing between the rotating ring 2 and the main shaft 1; first put the reinforcement ring 5 on the main shaft 1, and then insert the leather ring 6 into the rotating ring 2, put the rotating ring 2 and the leather ring 6 on the main shaft 1, and use the main shaft 1 to firmly insert the rotating ring 2 and the reinforcement ring 5 to keep it fixed, and use the reinforcement ring 5 to increase the firmness; the bearing ring 3 is embedded through the sealing groove 22 to increase the difficulty of oil passing through; the convex ring 23 is rotated and embedded in the bearing ring 3 to increase the difficulty of oil passing through.
[0031] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited to it. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the utility model according to the technical scheme and utility model concept of the utility model, which should be covered by the protection scope of the utility model.
[0032] The description briefly mentions the application direction of the utility model for the prior art that is known to those skilled in the art and has not been changed, and combines it with the utility model to form a complete technology; the description avoids over-popularizing the technology familiar to those skilled in the art, and is used to assist those skilled in the art to quickly understand the main content of the utility model.
Claims
1. A main shaft sealing mechanism, comprising a main shaft (1), characterized in that: The main shaft (1) is fixedly connected to a rotating ring (2) on the outside, the rotating ring (2) is rotatably sleeved with a bearing ring (3) on the outside, the bearing ring (3) is fixedly sleeved with a fixing ring (4), the bearing ring (3) is embedded in the fixing ring (4), and a gap is left at the bottom of the bearing ring (3) and the fixing ring (4).
2. A main shaft sealing mechanism according to claim 1, characterized in that: The main shaft (1) is covered with a leather ring (6) on the outside, and the leather ring (6) is located inside the rotating ring (2).
3. A main shaft sealing mechanism according to claim 1, characterized in that: A reinforcement ring (5) is also fixedly connected to the outside of the main shaft (1).
4. A main shaft sealing mechanism according to claim 1, characterized in that: The rotating ring (2) comprises a first ring body (21), and a sealing groove (22) is provided on the first ring body (21).
5. A main shaft sealing mechanism according to claim 4, characterized in that: The rotating ring (2) further comprises a convex ring (23), wherein the convex ring (23) is fixedly connected to the outer end of the first ring body (21).
6. A main shaft sealing mechanism according to claim 1, characterized in that: The bearing sleeve ring (3) comprises a sleeve body (31), and an oil seal groove (32) is formed at the inner end of the sleeve body (31).
7. A main shaft sealing mechanism according to claim 1, characterized in that: The fixing ring (4) comprises a second ring body (41), and a fixing groove (42) is formed on the second ring body (41).