Horizontal high-precision static pressure main shaft device

Abstract

The utility model discloses a horizontal high-precision static pressure main shaft device, which relates to the technical field of static pressure main shaft devices and comprises a shaft sleeve and a main shaft, a transmission bearing is welded on the inner wall of the shaft sleeve, the outer surface of the main shaft is fixedly connected with the inner wall of the transmission bearing, and two groups of dismounting mechanisms are arranged between the shaft sleeve and the main shaft. The dismounting and mounting mechanism comprises a shaft cover and a mounting groove formed in the outer surface of the shaft sleeve. According to the utility model, the effect of convenient disassembly and assembly can be realized by arranging the disassembly and assembly mechanism, so that the shaft cover can be conveniently disassembled from the shaft sleeve, the interior of the shaft sleeve can be conveniently cleaned at regular intervals, a large number of screws do not need to be disassembled, a large amount of time is saved, the cleaning and maintenance efficiency is improved, and the main shaft is ensured to stably rotate at high precision; by arranging the oil injection mechanism, pressure oil can be conveniently injected between the shaft sleeve and the main shaft, so that a pressure oil film is conveniently formed, friction and vibration of the main shaft are effectively reduced, and machining precision and surface quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of static pressure spindle devices, in particular to a horizontal high-precision static pressure spindle device. Background Art

[0002] Hydrostatic bearings are sliding bearings that rely on external pressure oil supply to establish a hydrostatic oil film inside the bearing to achieve liquid lubrication. Hydrostatic bearings work under liquid lubrication from start to stop, so there is no wear, long service life, low starting power, and can be used at extremely low (even zero) speeds. In addition, this type of bearing has the advantages of high rotation accuracy, high oil film stiffness, and the ability to suppress oil film oscillation.

[0003] The existing horizontal high-precision hydrostatic spindle device refers to the patent document CN209140666U. The device proposed in the patent document can ensure that the spindle can achieve smooth and high-precision rotation. However, due to the extremely high precision requirements of the processing, the inside of the sleeve needs to be cleaned frequently during daily use. However, a large number of screws need to be removed during cleaning. The disassembly process not only takes a lot of time, but also a large number of screws are prone to loss, resulting in a cumbersome disassembly and assembly process. In order to simplify the disassembly and assembly process and facilitate regular cleaning of the inside of the sleeve, we provide a horizontal high-precision hydrostatic spindle device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a horizontal high-precision static pressure spindle device, which can achieve the effect of convenient disassembly and assembly of the shaft cover and facilitate regular cleaning of the interior of the shaft sleeve.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a horizontal high-precision static pressure spindle device, comprising a sleeve and a spindle, the inner wall of the sleeve is welded with a transmission bearing, the outer surface of the spindle is fixedly connected to the inner wall of the transmission bearing, two sets of disassembly and assembly mechanisms are arranged between the sleeve and the spindle, the disassembly and assembly mechanisms include a shaft cover and a mounting groove opened on the outer surface of the sleeve, the sliding sleeve in the inner wall of the mounting groove is provided with two limit rods, the outer surface of each of the limit rods is fixedly connected with a disc, the outer surface of each of the discs is fixedly connected with a telescopic spring fixedly connected to the outer surface of the sleeve, the outer surface of the shaft cover is provided with two limit holes, the limit holes are adapted to the telescopic spring, and an oil injection mechanism is arranged inside the sleeve.

[0006] Furthermore, the outer surface of the disc is fixedly connected with a protective sleeve, and the outer surface of the protective sleeve is provided with anti-slip grooves. The provision of the protective sleeve can increase the friction force, thereby facilitating the pulling of the disc, which is beneficial to the disassembly and assembly of the shaft cover.

[0007] Furthermore, a sealed bearing is fixedly connected to the inner wall of the shaft cover, and the inner wall of the sealed bearing contacts the outer surface of the main shaft. By providing a sealed bearing, the wear between the main shaft and the shaft cover can be reduced during rotation, so that the main shaft can rotate more smoothly and the service life of the device is extended.

[0008] Furthermore, the outer surface of the shaft cover is provided with four mounting holes, which are arranged in a circle with the main shaft as the center. By providing the mounting holes, the device as a whole can be selectively installed and connected with other components for easy use.

[0009] Furthermore, the oil filling mechanism includes an oil filling hole opened on the outer surface of the sleeve, the inner wall of the oil filling hole is fixedly connected with an oil filling pipe, the bottom end of the oil filling pipe is connected with the interior of the sleeve, and a sealing plug is installed on the top of the oil filling pipe. By setting the oil filling hole and the oil filling pipe, it is convenient to fill oil into the interior of the sleeve, thereby facilitating the normal operation of the device.

[0010] Furthermore, the bottom end of the oil filling pipe is connected to a connecting pipe, the outer surface of the connecting pipe is fixedly connected to the inner wall of the sleeve, and oil economizers are installed at both ends of the connecting pipe. By providing the connecting pipe and the oil economizer, the pressure oil can be injected between the sleeve and the main shaft more reasonably, which facilitates the formation of a pressure oil film and reduces friction and vibration.

[0011] Furthermore, an oil drain hole is provided on the outer surface of the shaft sleeve, and a sealing column is installed on the inner wall of the oil drain hole. By providing the oil drain hole and the sealing column, the oil injected between the shaft sleeve and the main shaft can be easily discharged, thereby facilitating regular maintenance work.

[0012] Compared with the prior art, the horizontal high-precision static pressure spindle device has the following beneficial effects:

[0013] 1. The utility model can achieve the effect of convenient disassembly and assembly by setting a disassembly and assembly mechanism, so that the shaft cover can be conveniently removed from the shaft sleeve, which is convenient for regular cleaning of the inside of the shaft sleeve, and there is no need to remove a large number of screws, which saves a lot of time and improves the efficiency of cleaning and maintenance, ensuring that the main shaft rotates smoothly and with high precision. By setting an oil injection mechanism, pressure oil can be easily injected between the shaft sleeve and the main shaft, thereby facilitating the formation of a pressure oil film, effectively reducing the friction and vibration of the main shaft, thereby improving the processing accuracy and surface quality.

[0014] 2. The utility model can increase the friction force by providing a protective sleeve, thereby facilitating the pulling of the disc, which is beneficial to the disassembly and assembly of the shaft cover. By providing a sealed bearing, the wear between the main shaft and the shaft cover during rotation can be reduced, so that the main shaft can rotate more smoothly and the service life of the device is extended. By providing a mounting hole, the entire device can be selectively installed and connected with other components for easy use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the local structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the side cross-sectional structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the shaft cover structure of the utility model;

[0020] Figure 6 It is a schematic diagram of the cross-sectional structure of the utility model.

[0021] In the figure: 1. bushing; 2. main shaft; 3. transmission bearing; 4. disassembly and assembly mechanism; 401. shaft cover; 402. limiting hole; 403. mounting groove; 404. limiting rod; 405. disc; 406. telescopic spring; 407. protective cover; 408. sealed bearing; 409. mounting hole; 5. oil filling mechanism; 501. oil filling hole; 502. oil filling pipe; 503. connecting pipe; 504. economizer; 505. oil drain hole; 506. sealing column. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0023] As described in the background technology, in order to solve the problem of inconvenience in cleaning the inside of the sleeve, this embodiment provides a horizontal high-precision static pressure spindle device, which has the effect of convenient disassembly and assembly of the shaft cover, thereby facilitating regular cleaning of the inside of the sleeve.

[0024] See also Figures 1 to 6 This embodiment proposes a horizontal high-precision static pressure spindle device, including a sleeve 1 and a spindle 2, the inner wall of the sleeve 1 is welded with a transmission bearing 3, and the outer surface of the spindle 2 is fixedly connected to the inner wall of the transmission bearing 3.

[0025] The transmission bearing 3 is an existing mechanism and will not be described in detail here. By setting the transmission bearing 3, the main shaft 2 can be provided with an auxiliary support effect. While supporting the main shaft 2, it can also ensure the normal rotation of the main shaft 2, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

[0026] There are two sets of disassembly and assembly mechanisms 4 between the sleeve 1 and the main shaft 2. Figure 1 As shown, two sets of disassembly and assembly mechanisms 4 are respectively located at the two ends of the shaft sleeve 1. By providing the disassembly and assembly mechanisms 4, the device can be easily disassembled and assembled.

[0027] The disassembly and assembly mechanism 4 includes a shaft cover 401 and a mounting groove 403 provided on the outer surface of the shaft sleeve 1. Two limit rods 404 are provided in the inner wall of the mounting groove 403. The positions of the two limit rods 404 are as shown in FIG. Figure 3 As shown, the limiting rod 404 can slide in the inner wall of the installation groove 403.

[0028] The outer surface of each limiting rod 404 is fixedly connected to a disc 405, and the outer surface of each disc 405 is fixedly connected to a telescopic spring 406 fixedly connected to the outer surface of the sleeve 1, and the two ends of the telescopic spring 406 are respectively fixedly connected to the outer surface of the disc 405 and the sleeve 1. By setting the telescopic spring 406, the position of the limiting rod 404 can be easily reset, thereby facilitating the limiting work of other components.

[0029] The outer surface of the shaft cover 401 is provided with two limiting holes 402, and the limiting holes 402 are adapted to the telescopic spring 406. The positions of the limiting holes 402 are as follows: Figure 5 As shown, when the limiting hole 402 is engaged with the telescopic spring 406, Figure 6 shown.

[0030] When removing the shaft cover 401 from one end of the shaft sleeve 1, the two corresponding discs 405 can be pulled outward to make the two limiting rods 404 slide out of the corresponding limiting holes 402 respectively, thereby releasing the limit on the shaft cover 401. Then the shaft cover 401 can be directly removed from the corresponding installation groove 403, and then the staff can clean the inside of the shaft sleeve 1, thereby optimizing the disassembly steps.

[0031] After completing the above cleaning process, the staff can pull the two corresponding discs 405 outward again, and then insert the two limiting holes 402 on the surface of the shaft cover 401 into the directions of the two limiting rods 404 in the installation groove 403 respectively. When the shaft cover 401 is inserted to the bottom of the installation groove 403, the two pulled discs 405 can be released, and with the help of the elasticity of the telescopic spring 406, the two limiting rods 404 can be bounced into the two limiting holes 402 respectively to complete the installation work.

[0032] Moreover, in a preferred case, a rectangular installation groove may be opened on the inner wall of the installation groove 403 , and a rectangular block may be installed on the outer surface of the corresponding shaft cover 401 , so that the shaft cover 401 can be installed in the installation groove 403 more firmly.

[0033] Through the above structure, the shaft cover 401 can be conveniently installed in the installation groove 403 opened at one end of the outer surface of the shaft sleeve 1, and the shaft cover 401 can also be conveniently removed from the corresponding installation groove 403. During this process, there is no need to disassemble or install screws, which optimizes the disassembly and assembly process, allowing the staff to conveniently perform regular cleaning of the interior of the shaft sleeve 1, thereby ensuring the high precision of the device.

[0034] The inner wall of the shaft cover 401 is fixedly connected with a sealed bearing 408, and the inner wall of the sealed bearing 408 is in contact with the outer surface of the main shaft 2. By setting the sealed bearing 408, the wear between the main shaft 2 and the shaft cover 401 can be reduced when the main shaft 2 rotates, so that the main shaft 2 can rotate more smoothly and extend the service life of the device.

[0035] An oil filling mechanism 5 is provided inside the sleeve 1, and the oil filling mechanism 5 includes an oil filling hole 501 opened on the outer surface of the sleeve 1, and an oil filling pipe 502 is fixedly connected to the inner wall of the oil filling hole 501. The bottom end of the oil filling pipe 502 is connected to the inside of the sleeve 1, and a sealing plug is installed on the top of the oil filling pipe 502. By setting the oil filling hole 501 and the oil filling pipe 502, it is convenient to fill oil into the interior of the sleeve 1, so as to facilitate the normal operation of the device.

[0036] The bottom end of the oil filling pipe 502 is connected to a connecting pipe 503, the outer surface of the connecting pipe 503 is fixedly connected to the inner wall of the sleeve 1, and both ends of the connecting pipe 503 are installed with an economizer 504. By setting the connecting pipe 503 and the economizer 504, the pressure oil can be injected between the sleeve 1 and the main shaft 2 more reasonably, which is convenient for forming a pressure oil film and reducing friction and vibration.

[0037] An oil drain hole 505 is provided on the outer surface of the shaft sleeve 1, and a sealing column 506 is installed on the inner wall of the oil drain hole 505. By providing the oil drain hole 505 and the sealing column 506, the oil injected between the shaft sleeve 1 and the main shaft 2 can be easily discharged, which facilitates regular maintenance work.

[0038] The outer surface of the disc 405 is fixedly connected with a protective sleeve 407 , and the outer surface of the protective sleeve 407 is provided with anti-slip grooves. The protective sleeve 407 can increase the friction force, thereby facilitating the pulling of the disc 405 and facilitating the disassembly and assembly of the shaft cover 401 .

[0039] The outer surface of the shaft cover 401 is provided with four mounting holes 409 , which are arranged in a circle with the main shaft 2 as the center. By providing the mounting holes 409 , the device as a whole can be selectively installed and connected with other components for easy use.

[0040] Working principle: When the shaft cover 401 needs to be removed, it can be achieved by pulling the two corresponding discs 405 outward. When the two discs 405 are pulled outward, the two corresponding telescopic springs 406 will be in a stretched state, and at the same time, the two limiting rods 404 will be moved out of the corresponding limiting holes 402, thereby releasing the limiting effect on the shaft cover 401. Then, the shaft cover 401 can be directly removed from the installation slot 403 opened at one end of the device. The state after removal is as follows Figure 3 As shown, the staff can then clean the inside of the shaft sleeve 1. After completing the cleaning work and inspection, the corresponding two discs 405 can be pulled outward again. At this time, the two telescopic springs 406 are in a stretched state, so that the installation slot 403 can be inserted into the shaft cover 401. When inserting the shaft cover 401, it is necessary to adjust the directions of the two limiting holes 402 on the surface of the shaft cover 401 to be consistent with the directions of the corresponding limiting rods 404, and then insert the shaft cover 401 to the bottom of the installation slot 403, and release the two pulled discs 405, so that the two limiting rods 404 will use the elasticity of the two telescopic springs 406 to make the two limiting rods 404 respectively bounce into the corresponding limiting holes 402, completing the limiting installation of the shaft cover 401. In this way, through the above steps, the effect of convenient disassembly and assembly can be achieved, which is convenient for the staff to regularly clean the inside of the shaft sleeve 1, so that the device can work with higher precision.

Claims

1. A horizontal high-precision static pressure spindle device, comprising a sleeve (1) and a spindle (2), characterized in that: A transmission bearing (3) is welded to the inner wall of the shaft sleeve (1); the outer surface of the main shaft (2) is fixedly connected to the inner wall of the transmission bearing (3); two groups of disassembly and assembly mechanisms (4) are provided between the shaft sleeve (1) and the main shaft (2); the disassembly and assembly mechanisms (4) comprise a shaft cover (401) and a mounting groove (403) provided on the outer surface of the shaft sleeve (1); two limit rods (404) are provided on the sliding sleeve in the inner wall of the mounting groove (403); a disc (405) is fixedly connected to the outer surface of each limit rod (404); a telescopic spring (406) fixedly connected to the outer surface of the shaft sleeve (1) is fixedly connected to the outer surface of each disc (405); two limit holes (402) are provided on the outer surface of the shaft cover (401); the limit holes (402) are matched with the telescopic spring (406); and an oil injection mechanism (5) is provided inside the shaft sleeve (1).

2. A horizontal high-precision static pressure spindle device according to claim 1, characterized in that: The outer surfaces of the discs (405) are fixedly connected to protective sleeves (407), and the outer surfaces of the protective sleeves (407) are provided with anti-slip grooves.

3. The horizontal high-precision static pressure spindle device according to claim 1, characterized in that: A sealed bearing (408) is fixedly connected to the inner wall of the shaft cover (401), and the inner wall of the sealed bearing (408) is in contact with the outer surface of the main shaft (2).

4. The horizontal high-precision static pressure spindle device according to claim 1, characterized in that: The outer surface of the shaft cover (401) is provided with four mounting holes (409), and the four mounting holes (409) are arranged in a circle with the main shaft (2) as the center.

5. The horizontal high-precision static pressure spindle device according to claim 1, characterized in that: The oil injection mechanism (5) comprises an oil injection hole (501) formed on the outer surface of the shaft sleeve (1); an oil injection pipe (502) is fixedly connected to the inner wall of the oil injection hole (501); the bottom end of the oil injection pipe (502) is connected to the interior of the shaft sleeve (1); and a sealing plug is installed at the top end of the oil injection pipe (502).

6. A horizontal high-precision static pressure spindle device according to claim 5, characterized in that: The bottom end of the oil injection pipe (502) is connected to a connecting pipe (503), the outer surface of the connecting pipe (503) is fixedly connected to the inner wall of the shaft sleeve (1), and both ends of the connecting pipe (503) are equipped with oil economizers (504).

7. A horizontal high-precision static pressure spindle device according to claim 4, characterized in that: An oil drain hole (505) is provided on the outer surface of the shaft sleeve (1), and a sealing column (506) is installed on the inner wall of the oil drain hole (505).

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