CN218971663U - Magnetic air-float main shaft with long service life - Google Patents
Magnetic air-float main shaft with long service life Download PDFInfo
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- CN218971663U CN218971663U CN202222668523.6U CN202222668523U CN218971663U CN 218971663 U CN218971663 U CN 218971663U CN 202222668523 U CN202222668523 U CN 202222668523U CN 218971663 U CN218971663 U CN 218971663U
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Abstract
The utility model provides a magnetic air-bearing spindle with long service life, which comprises a shell, a top cover, a bearing sleeve, a bearing body, a shaft core, a magnetic ring and a fixing ring, wherein the top cover is fixed above the shell, the bearing sleeve is fixed in the shell, the bearing body is arranged in the bearing sleeve in a penetrating way, a gap exists between the outer side of the bearing body and the inner wall of the bearing sleeve, the bearing body is made of graphite materials, a first cavity is arranged in the top cover, a second cavity is arranged in the bearing body, the first cavity is communicated with the second cavity, the fixing ring is fixed at the upper end of the bearing sleeve, a fixing groove is arranged at the lower end of the fixing ring, the magnetic ring is fixed in the fixing groove, a rotating column penetrates through the second cavity, a gap exists between the outer side of the rotating column and the second cavity, a third cavity is arranged at the inner side of the rotating column, a rotating disc is fixed at the upper end of the rotating column, the middle part of the rotating disc is communicated with the third cavity, the edge of the rotating disc is correspondingly arranged above the magnetic ring, and a plurality of groups of wind guide grooves are arranged at the outer side of the wind guide ring.
Description
Technical Field
The utility model relates to the field of air bearings, in particular to a magnetic air floatation main shaft with long service life.
Background
Air bearings (also called magnetic air bearing spindles) refer to sliding bearings with a gas (usually air, but also other gases are possible) as lubricant. Air has less viscosity than oil, is high temperature resistant, and has no pollution, so that it can be used in high-speed machine, instrument and radioactive device, but its load capacity is lower than that of oil.
The axial center air bearing is characterized in that the axial center air bearing is arranged in the bearing shell, air is introduced into the bearing shell, and radial pressure is applied to the periphery of the axial center through the through hole in the bearing body, so that the axial center is suspended in the bearing body, and a lubricating effect is achieved.
Disclosure of Invention
The utility model aims to provide a magnetic air floatation main shaft with long service life so as to solve the problems in the background art.
In order to achieve the above object, the present utility model provides the following technical solutions:
the utility model provides a long service life's air supporting bearing, which comprises an outer shell, the top cap, the bearing housing, the bearing body, the axle core, magnetic ring and solid fixed ring, the top cap is fixed in the shell, the bearing housing is fixed in the shell, the bearing body wears to establish in the bearing housing, there is the clearance in the bearing body outside and bearing housing inner wall, the bearing body adopts graphite materials, be equipped with first cavity in the top cap, be equipped with the second cavity in the bearing body, first cavity and second cavity intercommunication, gu fixed ring fixes the upper end at the bearing housing, gu fixed ring lower extreme is equipped with the fixed slot, the magnetic ring is fixed in the fixed slot, the axle core adopts the parent magnetic material, the axle core includes integrated into one piece's column spinner, rotary disc and wind-guiding ring, the column wears to establish in the second cavity, there is the clearance in the column spinner outside, the column spinner inside is equipped with the third cavity, the rotary disc is fixed in column upper end and middle part and third cavity intercommunication, the edge of rotary disc corresponds in the magnetic ring top, the wind-guiding ring is fixed on the rotary disc and corresponds in first cavity, the wind-guiding ring outside is equipped with a plurality of group wind-guiding grooves.
Further description of the utility model: the top cover is provided with a first air inlet hole, a first air passage is arranged in the shell, a second air passage is arranged in the bearing sleeve, the bearing body is provided with a first air spraying hole, one end of the first air passage is communicated with the first air inlet hole, the other end of the first air passage is communicated with the second air passage, and the inner side of the second air passage is communicated with the first air spraying hole.
Further description of the utility model: the top cover is provided with a second air inlet hole, an air passing groove and a second air spraying hole, the air passing groove is correspondingly arranged in the top cover, the upper end of the second air inlet hole is corresponding to the upper end face of the top cover, the lower end of the second air inlet hole is communicated with the air passing groove, the second air discharging holes are provided with a plurality of groups, an included angle exists between the direction of the second air spraying hole and the radial direction of the shaft core, the outer side of the second air spraying hole is communicated with the air passing groove, and the inner side of the second air spraying hole is corresponding to the air guiding groove.
Further description of the utility model: the top cover is also provided with a third air inlet hole and a third air jet hole, an included angle exists between the direction of the third air jet hole and the radial direction of the isolating ring, the included angle direction of the third air jet hole is opposite to the included angle direction of the second air jet hole, the outer side of the third air jet hole is communicated with the air passing groove, the inner side of the third air jet hole corresponds to the air guiding groove, the upper end of the third air inlet hole corresponds to the upper end face of the top cover, and the lower end of the third air inlet hole is communicated with the third air jet hole.
Further description of the utility model: the periphery of the bearing sleeve is sleeved with a plurality of groups of sealing rings.
The beneficial effects of the utility model are as follows: through setting up the bearing body of making by graphite material, owing to graphite has self-lubricating, high temperature resistant, corrosion-resistant advantage, when making the bearing body take place the friction with the axle core, reduce the wearing and tearing between the two to reach the effect that increases magnetism air supporting main shaft life.
Drawings
FIG. 1 is an overall block diagram of the present utility model;
FIG. 2 is a perspective cross-sectional view of the present utility model;
FIG. 3 is an exploded view of the structure of the present utility model;
FIG. 4 is a cross-sectional view of the top cover of the present utility model;
FIG. 5 is a state of use of the present utility model;
reference numerals illustrate:
1. a housing; 11. a first airway; 2. a top cover; 21. a first air inlet hole; 22. a second air inlet hole;
23. a wind passing groove; 24. a second gas injection hole; 25. a third air inlet hole; 26. a third gas injection hole; 3. a bearing sleeve; 31. a second airway; 32. a seal ring; 4. a bearing body; 41. a first gas injection hole; 5. a shaft core; 51. a spin column; 511. a third cavity; 52. a rotating disc; 53. an air guide ring; 531. an air guide groove; 6. a magnetic ring; 7. a fixing ring; 8. a spray head.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
as shown in fig. 1 to 4, a magnetic air-bearing spindle with long service life comprises a housing 1, a top cover 2, a bearing sleeve 3, a bearing body 4, a shaft core 5, a magnetic ring 6 and a fixing ring 7, wherein the top cover 2 is fixed above the housing 1, the bearing sleeve 3 is fixed in the housing 1, the bearing body 4 is arranged in the bearing sleeve 3 in a penetrating manner, gaps exist between the outer side of the bearing body 4 and the inner wall of the bearing sleeve 3, the bearing body 4 is made of graphite materials, a first cavity is arranged in the top cover 2, a second cavity is arranged in the bearing body 4, the first cavity is communicated with the second cavity, the fixing ring 7 is fixed at the upper end of the bearing sleeve 3, a fixing groove is formed at the lower end of the fixing ring 7, the magnetic ring 6 is fixed in the fixing groove, the shaft core 5 is made of a magneto-philic material, the shaft core 5 comprises an integrally formed rotary column 51, a rotary disc 52 and a wind guide ring 53, the rotary column 51 is arranged in the second cavity in a penetrating manner, gaps exist between the outer side of the rotary column 51 and the second cavity, a third cavity 511 is arranged on the inner side of the rotary column 51, the rotary disc 52 is fixed at the upper end of the rotary column 51, the middle of the third cavity is communicated with the third cavity, the middle of the third cavity is arranged at the wind guide ring 511, the wind guide ring is correspondingly arranged at the edge of the upper edge of the rotary disc 53, and is correspondingly arranged at the wind guide ring 53.
The magnetic air-bearing spindle is used for driving the spindle to rotate, the spindle is fixed in a third cavity 511 of a spindle 5, the spindle is driven to rotate through the rotation of the spindle 5, an air tap is connected to the top cover 2, air is sprayed onto the spindle 5 through the top cover 2, the shell 1, the bearing sleeve 3 and the bearing body 4, a part of air flows to the rotating disc 52 through a gap between the bearing body 4 and the spindle 5 and lifts the rotating disc 52, meanwhile, the rotating disc 52 is subjected to upward air buoyancy and downward attraction under the action of attraction force of the magnetic ring 6, the spindle 5 is stable in position in the vertical direction, the spindle is stable in rotation, the upper end of the spindle 5 cannot collide with the top cover 2, another air is introduced into the top cover 2, and is sprayed onto an air guide groove 531 of the air guide ring 53, so that the spindle 5 rotates, and the bearing body 4 made of graphite material is arranged.
The top cover 2 is provided with a first air inlet hole 21, the shell 1 is internally provided with a first air passage 11, the bearing sleeve 3 is internally provided with a second air passage 31, the bearing body 4 is provided with a first air spraying hole 41, one end of the first air passage 11 is communicated with the first air inlet hole 21, the other end of the first air passage is communicated with the second air passage 31, and the inner side of the second air passage 31 is communicated with the first air spraying hole 41.
The first air inlet hole 21 is provided with an air tap, the air is ventilated into the first air inlet hole 21, the air enters the first air injection hole 41 on the bearing body 4 after passing through the first air passage 11 and the second air passage 31, the air is injected from the first air injection hole 41 to the shaft core 5, the shaft core 5 is suspended in the radial direction of the bearing body 4, a part of the air flows to the rotary disc 52 through a gap between the bearing body 4 and the shaft core 5, and the rotary disc 52 is lifted, so that the rotary disc 52 is suspended in the vertical direction.
The top cover 2 is provided with a second air inlet hole 22, an air passing groove 23 and a second air spraying hole 24, the air passing groove 23 is correspondingly arranged in the top cover 2, the upper end of the second air inlet hole 22 is corresponding to the upper end face of the top cover 2, the lower end of the second air inlet hole is communicated with the air passing groove 23, a plurality of groups of second air spraying holes are arranged, an included angle exists between the direction of the second air spraying hole 24 and the radial direction of the shaft core 5, the outer side of the second air spraying hole 24 is communicated with the air passing groove 23, and the inner side of the second air spraying hole corresponds to the air guiding groove 531.
The second air inlet hole 22 is provided with an air tap, the air is ventilated into the second air inlet hole 22, the air enters the second air jet hole 24 after passing through the air duct 23, and the air is jetted from the second air jet hole 24 to the air duct 531, so that the shaft core 5 rotates in the bearing body 4.
The top cover 2 is also provided with a third air inlet hole 25 and a third air jet hole 26, an included angle exists between the direction of the third air jet hole 26 and the radial direction of the isolating ring, the included angle direction of the third air jet hole 26 is opposite to the included angle direction of the second air jet hole 24, the outer side of the third air jet hole 26 is communicated with the air passing groove 23, the inner side corresponds to the air guiding groove 531, the upper end of the third air inlet hole 25 corresponds to the upper end face of the top cover 2, and the lower end of the third air inlet hole is communicated with the third air jet hole 26.
The third air inlet 25 is provided with an air tap, when the rotation of the shaft core 5 is required to be stopped, the air is ventilated into the third air inlet 25, and the air is sprayed to the air guide groove 531 through the third air spraying hole 26, so that the resistance is applied to the rotation of the shaft core 5, and the rotation of the shaft core 5 is stopped.
The bearing housing 3 periphery cover is equipped with multiunit sealing washer 32, can make bearing housing 3 install in shell 1 fast, and realizes close-fitting.
As shown in fig. 5, when the air spindle is applied to ink spraying, the nozzle 8 is additionally arranged on the spindle, and the air-floating spindle does not need to be driven by electric power, so that inflammable paint can not catch fire, and the safety is higher.
The working principle of the embodiment is as follows:
the gas is sprayed onto the shaft core 5 through the top cover 2, the shell 1, the bearing sleeve 3 and the bearing body 4, a part of the gas flows to the rotary disc 52 through a gap between the bearing body 4 and the shaft core 5 and lifts the rotary disc 52, meanwhile, the rotary disc 52 is subjected to upward gas buoyancy and downward attraction under the attraction force of the magnetic ring 6, the shaft core 5 is stable in position in the vertical direction and is ventilated into the second air inlet hole 22, the gas enters the second air injection hole 24 after passing through the air groove 23, the gas is sprayed from the second air injection hole 24 to the air guide groove 531, the shaft core 5 rotates in the bearing body 4, so that the spindle is driven to rotate, and when the bearing body 4 made of graphite materials rubs with the shaft core 5, the abrasion between the bearing body and the shaft core 5 can be reduced, so that the effect of prolonging the service life of the air-floating bearing is achieved.
The above description should not be taken as limiting the scope of the utility model, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.
Claims (5)
1. The utility model provides a long service life's magnetism air supporting main shaft which characterized in that: the novel bearing comprises a shell, a top cover, a bearing sleeve, a bearing body, a shaft core, a magnetic ring and a fixing ring, wherein the top cover is fixed above the shell, the bearing sleeve is fixed in the shell, the bearing body penetrates through the bearing sleeve, a gap exists between the outer side of the bearing body and the inner wall of the bearing sleeve, the bearing body is made of graphite materials, a first cavity is arranged in the top cover, a second cavity is arranged in the bearing body, the first cavity is communicated with the second cavity, the fixing ring is fixed at the upper end of the bearing sleeve, a fixing groove is formed in the lower end of the fixing ring, the magnetic ring is fixed in the fixing groove, the shaft core is made of a magneto-philic material, the shaft core comprises a rotating column, a rotating disc and a wind guide ring, the rotating column penetrates through the second cavity, the outer side of the rotating column is provided with the gap, a third cavity is arranged on the inner side of the rotating column, the rotating disc is fixed at the upper end of the rotating column and the middle of the rotating disc is communicated with the third cavity, the magnetic ring is correspondingly arranged at the upper side of the rotating disc and corresponds to the wind guide ring, and the wind guide ring is correspondingly arranged at the outer side of the fixing groove.
2. A long life magnetic air bearing spindle as defined in claim 1 wherein: the bearing is characterized in that a first air inlet hole is formed in the top cover, a first air passage is formed in the shell, a second air passage is formed in the bearing sleeve, a first air spraying hole is formed in the bearing body, one end of the first air passage is communicated with the first air inlet hole, the other end of the first air passage is communicated with the second air passage, and the inner side of the second air passage is communicated with the first air spraying hole.
3. A long life magnetic air bearing spindle as defined in claim 1 wherein: the top cover is provided with a second air inlet hole, an air passing groove and a second air spraying hole, the air passing groove is correspondingly arranged in the top cover, the upper end of the second air inlet hole is corresponding to the upper end face of the top cover, the lower end of the second air inlet hole is communicated with the air passing groove, the second air spraying holes are arranged in multiple groups, an included angle exists between the direction of the second air spraying hole and the radial direction of the shaft core, the outer side of the second air spraying hole is communicated with the air passing groove, and the inner side of the second air spraying hole is corresponding to the air guiding groove.
4. A long life magnetic air bearing spindle according to claim 3, wherein: the top cover is further provided with a third air inlet hole and a third air jet hole, an included angle exists between the direction of the third air jet hole and the radial direction of the isolating ring, the direction of the included angle of the third air jet hole is opposite to that of the second air jet hole, the outer side of the third air jet hole is communicated with the air passing groove, the inner side of the third air jet hole is corresponding to the air guiding groove, the upper end of the third air inlet hole is corresponding to the upper end face of the top cover, and the lower end of the third air jet hole is communicated with the third air jet hole.
5. A long life magnetic air bearing spindle as defined in claim 1 wherein: and a plurality of groups of sealing rings are sleeved on the periphery of the bearing sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222668523.6U CN218971663U (en) | 2022-10-11 | 2022-10-11 | Magnetic air-float main shaft with long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222668523.6U CN218971663U (en) | 2022-10-11 | 2022-10-11 | Magnetic air-float main shaft with long service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218971663U true CN218971663U (en) | 2023-05-05 |
Family
ID=86152843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222668523.6U Active CN218971663U (en) | 2022-10-11 | 2022-10-11 | Magnetic air-float main shaft with long service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218971663U (en) |
-
2022
- 2022-10-11 CN CN202222668523.6U patent/CN218971663U/en active Active
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