CN217814557U - Air-floatation main shaft for improving axial air suspension rigidity and bearing capacity of shaft core rotor - Google Patents
Air-floatation main shaft for improving axial air suspension rigidity and bearing capacity of shaft core rotor Download PDFInfo
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- CN217814557U CN217814557U CN202222076031.8U CN202222076031U CN217814557U CN 217814557 U CN217814557 U CN 217814557U CN 202222076031 U CN202222076031 U CN 202222076031U CN 217814557 U CN217814557 U CN 217814557U
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- air
- core rotor
- bearing
- shaft core
- tin bronze
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Abstract
The utility model discloses an air-float main shaft for improving axial air-float rigidity and bearing capacity of a shaft core rotor, which comprises a cylinder barrel, the shaft core rotor, a tin bronze air-float bearing, a distance clearance ring and a front pressure plate; the cylinder barrel is sleeved outside the shaft core rotor, the tin bronze air bearing is arranged between the shaft core rotor and the cylinder barrel, and the distance clearance ring is respectively fixed with the cylinder barrel, the tin bronze air bearing and the front pressure plate in a contact mode. The utility model discloses the depth of parallelism and the straightness that hangs down of tin bronze air supporting bearing and axle core rotor are more secure, make the dynamic value of axle core rotor under high rotational speed more stable, and the primary and secondary line of axle core rotor is straighter, and the shake of main shaft sabot work is less, obtains bigger promotion space on the cutting wafer, more does benefit to the assembly of main shaft and improves rigidity and the bearing capacity of the axial gas suspension of axle core rotor, also can promote the whole precision of main shaft simultaneously.
Description
Technical Field
The utility model relates to an air supporting main shaft device field especially relates to an improve air supporting main shaft of axle core rotor axial gas suspension rigidity and bearing capacity.
Background
An air-floating spindle (also called air spindle) refers to a sliding bearing with gas (usually air, but other gases are also possible) as a lubricant. Air is less viscous than oil, is resistant to high temperatures, is pollution-free, and is therefore used in high-speed machines, instruments, and radioactive devices, but has a lower load capacity than oil.
The structure of the existing air-floating main shaft is shown in fig. 1, and the existing air-floating main shaft comprises a cylinder barrel 11, a shaft core rotor 12, a tin bronze air-floating bearing 13, a thrust plate 14, a distance clearance ring 15 and a front pressure plate 16, wherein the thrust plate is used for supporting the tin bronze air-floating bearing and transmitting the tin bronze air-floating bearing to the shaft core rotor, the thrust plate needs to be installed and matched with the tin bronze air-floating bearing and the shaft core rotor in size, and the requirement on size and precision are high.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that: the air floatation main shaft is simple to assemble, the son-mother lines of the shaft core rotor are straighter, and the rigidity and the bearing capacity of axial air suspension of the shaft core rotor can be improved.
The technical scheme of the utility model as follows: an air-floating main shaft for improving axial air-floating rigidity and bearing capacity of a shaft core rotor comprises a cylinder barrel, the shaft core rotor, a tin bronze air-floating bearing, a distance clearance ring and a front pressure plate; the cylinder barrel is sleeved outside the shaft core rotor, the tin bronze air bearing is arranged between the shaft core rotor and the cylinder barrel, and the distance clearance ring is respectively fixed with the cylinder barrel, the tin bronze air bearing and the front pressure plate in a contact mode.
The air-floating spindle is applied to the technical scheme, a radial air chamber is arranged between the shaft core rotor and the tin bronze air-floating bearing, an axial air chamber is arranged between the front pressure plate and the tin bronze air-floating bearing, and the cylinder barrel is provided with an air source channel which is respectively communicated with the radial air chamber and the axial air chamber.
The air-floating main shaft is applied to the technical schemes, and the axial air chamber is further arranged between the distance clearance ring and the shaft core rotor.
The air floatation spindle is applied to the technical schemes, and the radial air chamber is communicated with the axial air chamber.
The air floatation spindle is applied to all the technical schemes, and the shaft core rotor is a ceramic shaft core rotor.
The utility model has the advantages that:
the utility model discloses a reset tin bronze air supporting bearing's structure, increase the thrust surface in tin bronze air supporting bearing, even it is direct fixed with the contact of distance clearance ring to get tin bronze air supporting bearing, cancel this device of thrust plate, radial air chamber and axial air chamber share are admitted air, thereby the cooperation precision error value between thrust plate and the cylinder has been reduced, tin bronze air supporting bearing is more secure with the depth of parallelism and the straightness that hangs down of axle core rotor, make the dynamic value of axle core rotor under high rotational speed more stable, the primary and secondary line of axle core rotor is more straight, the shake of main shaft dress cutter head work is less, obtain bigger promotion space on the cutting wafer, more do benefit to the assembly of main shaft and improve rigidity and the bearing capacity of the axial gas suspension of axle core rotor, also can promote the whole precision of main shaft simultaneously.
Drawings
FIG. 1 is a schematic cross-sectional view of a prior art
Fig. 2 is a schematic sectional view of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The embodiment provides an air-floating main shaft for improving axial air-floating rigidity and bearing capacity of a shaft core rotor, and as shown in fig. 2, the air-floating main shaft comprises a cylinder barrel 1, a shaft core rotor 2, a tin bronze air-floating bearing 3, a distance clearance ring 4 and a front pressure plate 5; wherein, the cylinder 1 is sleeved outside the shaft core rotor 2, the tin bronze air bearing 3 is arranged between the shaft core rotor 2 and the cylinder 1, and the distance clearance ring 4 is respectively fixed with the cylinder 1, the tin bronze air bearing 2 and the front pressure plate 5 in a contact manner.
A radial air chamber 6 is arranged between the shaft core rotor 2 and the tin bronze air bearing 3, an axial air chamber 7 is arranged between the front pressure plate 5 and the tin bronze air bearing 3, the axial air chamber 7 is also arranged between the distance clearance ring 4 and the shaft core rotor 2, and the cylinder barrel 1 is provided with an air source channel 8 which is respectively communicated with the radial air chamber 6 and the axial air chamber 7, wherein the air source channel 8 inputs an air source to the radial air chamber 6 through an air source inlet 9, and the air source channel 8 inputs the air source to the axial air chamber 7 through an air source inlet 10; the radial air chamber 6 is provided to communicate with the axial air chamber 7.
So, through the structure of resetting tin bronze air supporting bearing, increase the thrust surface in tin bronze air supporting bearing, even make tin bronze air supporting bearing direct with distance clearance ring contact fixed, cancel this device of thrust plate, and, still through with air supply passageway 8, radial air chamber 6 and axial air chamber 7 two liang of intercommunication respectively, radial air chamber 6 and axial air chamber 7 share admits air, thereby the cooperation precision error value between thrust plate and the cylinder has been reduced, parallelism and the straightness that hangs down of tin bronze air supporting bearing and axle core rotor are more guaranteed, make the dynamic value of axle core rotor under high rotational speed more stable, the primary and secondary line of axle core rotor is straighter, the shake of main shaft dress cutter head work is less, obtain bigger promotion space on the cutting wafer, more do benefit to the assembly of main shaft and improve the rigidity and the bearing capacity of the axial air suspension of axle core rotor, also can promote the whole precision of main shaft simultaneously.
In addition, the shaft core rotor is a ceramic shaft core rotor, and when the air floatation main shaft rotates at a high speed, the radial load of the ceramic shaft core rotor is increased during cutting operation, so that the ceramic shaft core rotor can deviate from a main shaft character bus, the ceramic shaft core rotor can rub against the tin bronze air floatation bearing, the ceramic shaft core rotor has high temperature resistance coefficient, and the ceramic shaft core rotor cannot be sintered or bitten with the tin bronze air floatation bearing, because the tin bronze air floatation bearing cannot be sintered with the ceramic shaft core rotor at an instant high temperature, even if the temperature of the surface of the tin bronze air floatation bearing, caused by burning oxidation, is not enough to injure the ceramic shaft core rotor, the smaller the damage, the longer the time for holding the precision is, and the longer the service life of the air floatation main shaft is.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. An air-float main shaft for improving the axial air-float rigidity and bearing capacity of a shaft core rotor is characterized in that,
the air bearing comprises a cylinder barrel, a shaft core rotor, a tin bronze air bearing, a distance clearance ring and a front pressure plate; the cylinder barrel is sleeved outside the shaft core rotor, the tin bronze air bearing is arranged between the shaft core rotor and the cylinder barrel, and the distance clearance ring is respectively fixed with the cylinder barrel, the tin bronze air bearing and the front pressure plate in a contact mode.
2. The air spindle as claimed in claim 1, wherein: a radial air chamber is arranged between the shaft core rotor and the tin bronze air bearing, an axial air chamber is arranged between the front pressure plate and the tin bronze air bearing, and the cylinder barrel is provided with an air source channel communicated with the radial air chamber and the axial air chamber respectively.
3. The air spindle as claimed in claim 2, wherein: the axial air chamber is also arranged between the distance clearance ring and the shaft core rotor.
4. The air spindle as claimed in claim 3, wherein: the radial air chamber is communicated with the axial air chamber.
5. The air spindle as claimed in any one of claims 1 to 4, wherein: the shaft core rotor is a ceramic shaft core rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222076031.8U CN217814557U (en) | 2022-08-08 | 2022-08-08 | Air-floatation main shaft for improving axial air suspension rigidity and bearing capacity of shaft core rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222076031.8U CN217814557U (en) | 2022-08-08 | 2022-08-08 | Air-floatation main shaft for improving axial air suspension rigidity and bearing capacity of shaft core rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217814557U true CN217814557U (en) | 2022-11-15 |
Family
ID=83974319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222076031.8U Active CN217814557U (en) | 2022-08-08 | 2022-08-08 | Air-floatation main shaft for improving axial air suspension rigidity and bearing capacity of shaft core rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217814557U (en) |
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2022
- 2022-08-08 CN CN202222076031.8U patent/CN217814557U/en active Active
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