Numerical control high-precision waterproof and dustproof dynamic and static pressure main shaft

Abstract

The utility model discloses a numerical control high-precision waterproof and dustproof dynamic-static pressure main shaft, and relates to the technical field of dynamic-static pressure main shafts, the numerical control high-precision waterproof and dustproof dynamic-static pressure main shaft comprises a machine body and a shaft rod connected to one side of the machine body, one side of the machine body is fixedly connected with a top frame, the top frame is arranged above the shaft rod, and the interior of the top frame is in limited connection with a vertical rod through a locking nut; and the vertical rods are arranged in the top frame in a penetrating manner. According to the utility model, the supporting plate is arranged at the bottom of the shaft rod, and the rotating cylinders are rotatably arranged in the supporting plate, so that the rotating cylinders can rotate in an attached manner at the bottom end of the shaft rod, and therefore, when the shaft rod sinks, the friction force is increased, and the working accuracy of the shaft rod can be conveniently monitored; the sealing performance between the shaft rod and the connecting base is improved, the waterproof and oil-proof effect on one side of the machine body is achieved, the connecting effect between the shaft rod and the sleeve column is ensured through the arrangement of the sealing ring, lubricating oil leakage is avoided, and the service life of the main shaft is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamic and static pressure spindles, in particular to a numerically controlled high-precision waterproof and dustproof dynamic and static pressure spindle. Background Art

[0002] A dynamic and static pressure spindle refers to a spindle that is supported by a dynamic and static pressure oil film and has excellent wear-free properties. When in operation, a hydraulic pump applies lubricant to the spindle so that the lubricant can be pressed into the tiny gap between the spindle and the bearing to assist the spindle in sliding and rotating. Dynamic and static pressure spindles are widely used in high-precision CNC grinding machines to drive the workpiece for rotation and grinding.

[0003] When the dynamic and static pressure spindle is working, the internal lubricating oil is sprayed onto the shaft. During long-term operation, the shaft and the body are easily unevenly distributed due to the sealing. As a result, the surface of the shaft is easily contaminated with dust due to the lubricating oil. The dust-proof effect is poor, which can easily affect the working state of the spindle. In addition, the shaft is prone to sinking due to shaking during long-term operation, which affects the rotation accuracy of the shaft. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the lubricating oil inside the existing dynamic and static pressure spindle is sprayed on the shaft. During long-term operation, the shaft and the body are easily unevenly lubricated due to the sealing, which causes the surface of the shaft to be easily contaminated with dust due to the lubricating oil, resulting in poor dustproof effect, which is easy to affect the working state of the spindle, and the shaft is prone to sinking due to shaking during long-term operation, affecting the rotation accuracy of the shaft. A CNC high-precision waterproof and dustproof dynamic and static pressure spindle is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A numerically controlled high-precision waterproof and dustproof dynamic and static pressure spindle comprises a body and a shaft connected to one side of the body, a top frame is fixedly connected to one side of the body, and the top frame is arranged above the shaft, and a vertical rod is connected to the inside of the top frame through a locking nut, and the vertical rod is arranged through the inside of the top frame;

[0007] The bottom end of the vertical rod is fixedly connected with a support plate, and the support plate is arranged at the bottom end of the shaft rod. A plurality of rotating cylinders are rotatably arranged inside the support plate, and the rotating cylinders are closely arranged at the bottom end of the shaft rod.

[0008] The body and the shaft are connected through a connecting seat, and a dustproof cylinder is sleeved on the surface of the connecting seat. The front end of the dustproof cylinder is connected to a sleeve column, and the sleeve column is arranged on the outer wall of the shaft, and a sealing ring is arranged between the shaft and the sleeve column.

[0009] As a further description of the above technical solution:

[0010] The support plate is arranged in a "U"-shaped structure at the bottom end of the shaft rod, and both ends of the support plate are provided with folded edges fixedly connected to the vertical rod.

[0011] As a further description of the above technical solution:

[0012] The vertical poles are symmetrically arranged in multiple groups on the surface of the supporting plate, and the outer walls of the vertical poles are threadedly connected with locking nuts.

[0013] As a further description of the above technical solution:

[0014] The surface of the vertical pole is provided with scale lines.

[0015] As a further description of the above technical solution:

[0016] The top frame is arranged above the shaft rod in parallel, and a plurality of through holes for accommodating the vertical rods to pass through are symmetrically arranged inside the top frame.

[0017] As a further description of the above technical solution:

[0018] The connecting seat and the dustproof cylinder are connected by bolts, and the dustproof cylinder is sleeved and installed on the outer wall of the shaft.

[0019] As a further description of the above technical solution:

[0020] The surface of the sleeve column is provided with a through groove for accommodating the sealing ring to be embedded and installed, and the sealing ring is arranged in a "middle" type structure, and the inside of the sealing ring is provided with a through groove for accommodating the insertion of the shaft rod.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0022] In the utility model, a support plate is provided at the bottom of the shaft rod, and a plurality of rotating cylinders are rotatably arranged inside the support plate. The rotating cylinders can be rotated in close contact with the bottom end of the shaft rod, thereby increasing the friction force when the shaft rod sinks, which is convenient for monitoring the working accuracy of the shaft rod. Moreover, by providing a dustproof cylinder, the sealing between the shaft rod and the connecting seat is improved, and a waterproof and oil-proof effect is achieved on one side of the machine body. Moreover, by providing a sealing ring, the connection effect between the shaft rod and the sleeve column is ensured, and leakage of lubricating oil is avoided, which is beneficial to extending the service life of the main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a CNC high-precision waterproof and dustproof dynamic and static pressure spindle in the utility model;

[0024] Figure 2 It is a schematic diagram of the explosion structure of the dustproof cylinder and the connecting seat in the utility model;

[0025] Figure 3 This is a schematic structural diagram of the support plate and the vertical rod in the present utility model.

[0026] Legend description:

[0027] 1. Machine body; 2. Shaft rod; 3. Connecting seat; 4. Dust-proof cylinder; 5. Sleeve column; 6. Sealing ring; 7. Top frame; 8. Vertical rod; 9. Locking nut; 10. Support plate; 11. Rotating cylinder. Specific implementation manner

[0028] 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 in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0029] Refer to Figure 1-Figure 3 , a numerically controlled high-precision waterproof and dust-proof hydrostatic and hydrodynamic spindle, including a machine body 1, a shaft rod 2 connected to one side of the machine body 1, a connecting seat 3, a dust-proof cylinder 4, a sleeve column 5, a sealing ring 6, a top frame 7, a vertical rod 8, a locking nut 9, a support plate 10, and a rotating cylinder 11. A top frame 7 is fixedly connected to one side of the machine body 1. The top frame 7 is arranged in a "U" shape, ensuring the working stability of the top frame 7. And the top frame 7 is arranged parallel above the shaft rod 2. A vertical rod 8 is connected in the top frame 7 by a locking nut 9 for limiting. And in order to achieve the stability and installation flexibility of the vertical rod 8, a plurality of groups of through holes for the vertical rod 8 to pass through are symmetrically opened inside the top frame 7, facilitating the adjustment of the installation height of the vertical rod 8. At the same time, scale lines are provided on the surface of the vertical rod 8, facilitating the intuitive observation of the vertical rod 8. Through such a setting, the vertical rod 8 penetrates through the inside of the top frame 7, facilitating the vertical rod 8 to drive the support plate 10 at the bottom to limit the shaft rod 2;

[0030] Furthermore, considering the supporting effect of the support plate 10 on the shaft 2, the support plate 10 is fixedly connected to the bottom end of the vertical rod 8, and considering the installation stability of the support plate 10, four groups of vertical rods 8 are symmetrically arranged on the surface of the support plate 10 to ensure the balance of the support plate 10. By threading the outer wall of the vertical rod 8 with a locking nut 9, the limit of the vertical rod 8 can achieve stable support and deviation correction at the bottom end of the shaft 2, avoiding the sinking problem of the shaft 2 during long-term work. Specifically, folded edges are provided at both ends of the support plate 10 to be fixedly connected to the vertical rod 8 to ensure the connection stability of the vertical rod 8 and the support plate 10, and the support plate 10 is "smooth" at the bottom end of the shaft 2. The U-shaped structure is convenient for fitting with the arc surface at the bottom end of the shaft rod 2. At the same time, multiple groups of rotating cylinders 11 are rotatably arranged inside the support plate 10. Through the arrangement of the rotating cylinders 11, under the action of the fitting arrangement of the rotating cylinders 11 at the bottom end of the shaft rod 2, the rotation of the shaft rod 2 can synchronously drive the rotating cylinders 11 to rotate, ensuring the rotation effect of the shaft rod 2. When the shaft rod 2 sinks, the shaft rod 2 has downward pressure above the rotating cylinder 11, increasing the friction between the shaft rod 2 and the rotating cylinder 11, so that the rotation of the shaft rod 2 is disturbed, which is convenient for users to intuitively observe the working state of the shaft rod 2, and the structure is simple and the maintenance cost is low.

[0031] Considering the stability of the lubricating oil inside the body 1, the surface of the shaft 2 is treated to be dustproof and waterproof. The body 1 and the shaft 2 are connected by a connecting seat 3. In order to seal the connection, a dustproof tube 4 is sleeved on the surface of the connecting seat 3. Specifically, the connecting seat 3 and the dustproof tube 4 are connected by bolts to ensure the installation stability of the dustproof tube 4. The dustproof tube 4 is sleeved and installed on the outer wall of the shaft 2, which makes the installation of the dustproof tube 4 simple and convenient. At the same time, a sleeve column 5 is connected to the front end of the dustproof tube 4, and the sleeve column 5 is coaxially arranged on the outer wall of the shaft 2 to ensure the connection between the shaft 2 and the sleeve column 5. The effect is realized, and the dustproof and waterproof effect on the outer side of the connecting seat 3 is realized. Furthermore, considering the sealing and waterproof and dustproof effect between the sleeve column 5 and the shaft rod 2, a sealing ring 6 is arranged between the shaft rod 2 and the sleeve column 5. Specifically, the sealing ring 6 is arranged in a "medium" structure to facilitate the stable connection between the sealing ring 6 and the sleeve column 5, and a through groove for accommodating the insertion of the shaft rod 2 is arranged inside the sealing ring 6, which is convenient for the sealing ring 6 to be sleeved on the outer wall of the shaft rod 2, and a through groove for accommodating the mosaic installation of the sealing ring 6 is opened on the surface of the sleeve column 5, which is convenient for the mosaic installation of the sealing ring 6, thereby realizing stable sealing between the shaft rod 2 and the sleeve column 5.

[0032] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A numerically controlled high-precision waterproof and dustproof dynamic and static pressure spindle, comprising a body (1) and a shaft (2) connected to one side of the body (1), characterized in that: A top frame (7) is fixedly connected to one side of the machine body (1), and the top frame (7) is arranged above the shaft rod (2); the interior of the top frame (7) is positionally connected to a vertical rod (8) via a locking nut (9), and the vertical rod (8) is arranged to penetrate the interior of the top frame (7); The bottom end of the vertical rod (8) is fixedly connected to a support plate (10), and the support plate (10) is arranged at the bottom end of the shaft rod (2); a plurality of groups of rotating cylinders (11) are rotatably arranged inside the support plate (10), and the rotating cylinders (11) are closely arranged at the bottom end of the shaft rod (2); The machine body (1) and the shaft (2) are connected via a connecting seat (3), and a dustproof cylinder (4) is sleeved on the surface of the connecting seat (3), a sleeve column (5) is connected to the front end of the dustproof cylinder (4), and the sleeve column (5) is arranged on the outer wall of the shaft (2), and a sealing ring (6) is arranged between the shaft (2) and the sleeve column (5).

2. A CNC high-precision waterproof and dustproof dynamic and static pressure spindle according to claim 1, characterized in that: The support plate (10) is arranged at the bottom end of the shaft rod (2) in a "U"-shaped structure, and both ends of the support plate (10) are provided with folded edges fixedly connected to the vertical rod (8).

3. The CNC high-precision waterproof and dustproof dynamic and static pressure spindle according to claim 2, characterized in that: The vertical rods (8) are symmetrically arranged in multiple groups on the surface of the support plate (10), and the outer walls of the vertical rods (8) are threadedly connected with locking nuts (9).

4. The CNC high-precision waterproof and dustproof dynamic and static pressure spindle according to claim 3 is characterized by: The surface of the vertical pole (8) is provided with scale lines.

5. The CNC high-precision waterproof and dustproof dynamic and static pressure spindle according to claim 1, characterized in that: The top frame (7) is arranged parallel to the shaft rod (2), and a plurality of groups of through holes capable of accommodating the vertical rods (8) are symmetrically arranged inside the top frame (7).

6. The CNC high-precision waterproof and dustproof dynamic and static pressure spindle according to claim 1, characterized in that: The connection seat (3) and the dustproof cylinder (4) are connected by bolts, and the dustproof cylinder (4) is sleeved and installed on the outer wall of the shaft rod (2).

7. The CNC high-precision waterproof and dustproof dynamic and static pressure spindle according to claim 1, characterized in that: The surface of the sleeve column (5) is provided with a through groove capable of accommodating the sealing ring (6) for insertion and installation, and the sealing ring (6) is arranged in a "middle" type structure, and the interior of the sealing ring (6) is provided with a through groove capable of accommodating the insertion of the shaft rod (2).

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