CN220104490U - Performance test equipment for radial dynamic pressure air bearing - Google Patents
Performance test equipment for radial dynamic pressure air bearing Download PDFInfo
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- CN220104490U CN220104490U CN202321541412.7U CN202321541412U CN220104490U CN 220104490 U CN220104490 U CN 220104490U CN 202321541412 U CN202321541412 U CN 202321541412U CN 220104490 U CN220104490 U CN 220104490U
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- air bearing
- dynamic pressure
- main shaft
- radial dynamic
- pressure air
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- 238000011056 performance test Methods 0.000 title claims description 15
- 238000006073 displacement reaction Methods 0.000 claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 20
- 230000002706 hydrostatic effect Effects 0.000 claims description 21
- 238000003754 machining Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 2
- 230000003068 static effect Effects 0.000 abstract description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model relates to the technical field of air bearing testing, in particular to performance testing equipment of a radial dynamic pressure air bearing, which comprises the following components: a power source; a main shaft mounted on the power source; the static pressure bearing is arranged on the main shaft, the fixing component is used for supporting and fixing the static pressure bearing and the power source, and the air bearing is arranged at the end part of the main shaft; the air bearing is externally provided with a load component, and the fixed component is provided with a displacement sensor for measuring the displacement of the air bearing and a pressure sensor for measuring the stress of the air bearing. According to the utility model, the air bearing is in a suspended state, so that the test is convenient, the test result is more accurate, and the displacement condition of the air bearing can be tested through the displacement sensor, so that the vibration displacement condition of the air bearing relative to the main shaft can be obtained; the pressure sensor detects the stress condition of the air bearing when the pressure sensor is stationary, and then detects the stress condition of the air bearing when the pressure sensor reaches the rated rotation speed, so that the torque of the main shaft when the main shaft rotates is detected.
Description
Technical Field
The utility model relates to the technical field of air bearing testing, in particular to performance testing equipment of a radial dynamic pressure air bearing.
Background
The air bearing is a sliding bearing which uses gas as a lubricant, has high precision and long service life, and is particularly suitable for working conditions with high requirements on environment; the performance test equipment of the air bearing is equipment for detecting the performance of the air bearing, such as: coaxiality, etc.
The Chinese patent with the application number of 202210023377.3 discloses a dynamic pressure air bearing test platform, which comprises a platform body, an X-axis precise fine adjustment moving platform and a Z-axis precise fine adjustment lifting platform which are respectively fixed on the platform body, wherein a high-speed motor is fixed on the X-axis precise fine adjustment moving platform; the power output shaft of the high-speed motor is connected with the thrust disc; the pressure force transducer and the torque measuring instrument respectively measure the force and the moment on the axial force output rod and the torque output rod; the bearing fixing seat is arranged opposite to the thrust disc and is used for fixing the dynamic pressure air bearing to be tested; the X-axis precise fine adjustment moving platform drives the high-speed motor and the thrust disc to translate in the horizontal direction, and the Z-axis precise fine adjustment lifting platform drives the linear bearing box and the bearing fixing seat to translate in the vertical direction. The test platform can replace air bearings of different types, control the working rotating speed and the working air film thickness of the bearings in real time, and record the load conditions under different working states.
However, the chinese patent application No. 202210023377.3 is simpler in testing means and cannot apply load to the air bearing.
Therefore, there is a need to provide a new solution to overcome the above-mentioned drawbacks.
Disclosure of Invention
The utility model aims to provide performance testing equipment for a radial dynamic pressure air bearing, which can effectively solve the technical problems.
In order to achieve the purpose of the utility model, the following technical scheme is adopted:
a performance testing apparatus for a radial dynamic pressure air bearing, comprising:
a power source; a main shaft mounted on the power source; the static pressure bearing is arranged on the main shaft, the fixing assembly is used for supporting and fixing the static pressure bearing and the power source, and the air bearing is arranged at the end part of the main shaft;
the air bearing is characterized in that a load assembly is arranged outside the air bearing, and a displacement sensor for measuring the displacement of the air bearing and a pressure sensor for measuring the stress of the air bearing are arranged on the fixed assembly.
Further: the fixing assembly includes: the first fixed ring is arranged on the power source, the second fixed ring is arranged on the first fixed ring, the third fixed ring is arranged on the second fixed ring, and one end of the third fixed ring is in contact with the hydrostatic bearing.
Further: the fixed component is arranged on the chassis, and a lever meter is arranged on the chassis.
Further: the hydrostatic bearing is provided with a position adjusting piece for adjusting the position of the hydrostatic bearing along the main shaft.
Further: the position adjusting piece is a gasket.
Further: the power source is a programmable motor.
Further: the third fixing ring and the matching hole of the hydrostatic bearing are formed by machining in a one-tool process.
Further: the first fixing ring and the matching hole of the power source are formed by machining a cutter in a machining mode.
Further: the load assembly comprises a mounting ring fixedly mounted outside the air bearing, and a connecting part for integrally connecting the load is arranged on the mounting ring.
Further: the connection portion is vertically upward or vertically downward.
Compared with the prior art, the utility model has the following beneficial effects: according to the performance test equipment for the radial dynamic pressure air bearing, the air bearing is in a suspended state, so that the test is convenient, the test result is more accurate, and the displacement condition of the air bearing can be tested through the displacement sensor, so that the vibration displacement condition of the air bearing relative to the main shaft can be obtained; the pressure sensor detects the stress condition of the air bearing when the pressure sensor is stationary, and then detects the stress condition of the air bearing when the pressure sensor reaches the rated rotation speed, so that the torque of the main shaft when the main shaft rotates is detected.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.
Fig. 1 is an isometric view of a performance testing apparatus for a radial dynamic pressure air bearing of the present utility model.
Fig. 2 is a cross-sectional view of a performance test apparatus of a radial dynamic pressure air bearing of the present utility model.
In the figure: 1. the device comprises a power source, 2, a main shaft, 3, a hydrostatic bearing, 4, an air bearing, 5, a first fixed ring, 6, a second fixed ring, 7, a third fixed ring, 8, a chassis, 9, a mounting ring, 10 and a connecting part.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the following description will be made in detail with reference to the technical solutions in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments.
In the description of the present utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model. When an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
As shown in fig. 1 to 2, the performance test apparatus of a radial dynamic pressure air bearing of the present utility model comprises:
power source 1: the power source 1 is a programmable motor, such as a servo motor, and the rotating speed of the power source 1 can be controlled to reach the rotating speed during testing; a main shaft 2 mounted on the power source 1; the hydrostatic bearing 3 is arranged on the main shaft 2, the hydrostatic bearing 3 is a common hydrostatic bearing 3, a fixing assembly for supporting and fixing the hydrostatic bearing 3 and the power source 1 is arranged at the end part of the main shaft 2, and the air bearing 4 is arranged at the end part of the main shaft 2, so that the air bearing 4 is in a suspended state, and the test is convenient; the load assembly is arranged outside the air bearing 4, and the displacement sensor for measuring the displacement of the air bearing 4 and the pressure sensor for measuring the stress of the air bearing 4 are arranged on the fixed assembly.
The fixing assembly includes: a first fixed ring 5 installed on the power source 1, a second fixed ring 6 installed on the first fixed ring 5, a third fixed ring installed on the second fixed ring 6, and one end of the third fixed ring 7 is in contact with the hydrostatic bearing 3.
The mounting positions of the displacement sensor and the pressure sensor can be set according to actual needs, and the types of the displacement sensor and the pressure sensor can be selected according to the needs; the displacement condition of the air bearing 4 can be tested through the displacement sensor, so that the vibration displacement condition of the air bearing 4 relative to the main shaft 2 can be obtained; the pressure sensor detects the stress condition of the air bearing 4 when the pressure sensor is stationary, and then detects the stress condition of the air bearing 4 when the rated rotation speed is reached, so that the torque of the main shaft 2 when the main shaft rotates is detected.
The fixed component is arranged on the chassis 8, a lever meter is arranged on the chassis 8 and is used for monitoring vibration of the chassis 8 so as to detect coaxial runout, and the maximum value of the coaxiality of the first fixed ring 5 can be replaced.
The hydrostatic bearing 3 is provided with a position adjusting piece for adjusting the position of the hydrostatic bearing 3 along the main shaft 2; the position adjusting piece is a gasket, and the influence of the change of the static pressure position on the whole shafting movement condition in the shafting under the same condition is explored by changing the relative position of the static pressure bearing 3.
The matching hole of the third fixing ring 7 and the hydrostatic bearing 3 is formed by machining a cutter; the first fixing ring 5 and the matching hole of the power source 1 are formed by machining a cutter, and the first fixing ring 5, the second fixing ring 6 and the third fixing ring 7 are matched more precisely, so that the coaxial degree of the coaxial type power source is matched more precisely.
The load assembly comprises a mounting ring 9 fixedly mounted outside the air bearing 4, a connecting part 10 is integrally connected to the mounting ring 9, and the connecting part 10 is vertically upwards or vertically downwards, namely, the load assembly can vertically downwards apply tension and can also apply pressure to explore the bearing capacity of the air bearing 4 under different loads.
The air bearing 4 is in a suspended state, so that the test is convenient, the test result is more accurate, and the displacement condition of the air bearing 4 can be tested through the displacement sensor, so that the vibration displacement condition of the air bearing 4 relative to the main shaft 2 can be obtained; the pressure sensor detects the stress condition of the air bearing 4 when the pressure sensor is stationary, and then detects the stress condition of the air bearing 4 when the rated rotation speed is reached, so that the torque of the main shaft 2 when the main shaft rotates is detected.
The lever gauge is used to monitor the vibration of the chassis 8, thereby detecting the coaxial runout, and the first fixing ring 5 can be replaced to test the maximum value of the coaxiality.
By changing the relative position of the hydrostatic bearing 3, the effect of the change in hydrostatic position on the overall shafting movement in shafting under the same conditions was investigated.
The load assembly can apply a pulling force vertically downwards, and can also apply a compressive force to explore the bearing capacity of the air bearing 4 under different loads.
Standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional modes in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that details are not described in detail in the specification, and the utility model belongs to the prior art known to the person skilled in the art.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (10)
1. The utility model provides a radial dynamic pressure air bearing's capability test equipment which characterized in that: comprising the following steps:
a power source (1); a main shaft (2) mounted on the power source (1); a hydrostatic bearing (3) mounted on the main shaft (2), a fixing assembly for supporting and fixing the hydrostatic bearing (3) and the power source (1), and an air bearing (4) mounted at the end of the main shaft (2);
the air bearing (4) is externally provided with a load component, and the fixed component is provided with a displacement sensor for measuring the displacement of the air bearing (4) and a pressure sensor for measuring the stress of the air bearing (4).
2. The radial dynamic pressure air bearing performance test apparatus as set forth in claim 1, wherein: the fixing assembly includes: the device comprises a first fixed ring (5) arranged on the power source (1), a second fixed ring (6) arranged on the first fixed ring (5), and a third fixed ring (7) arranged on the second fixed ring (6), wherein one end of the third fixed ring (7) is in contact with the hydrostatic bearing (3).
3. The radial dynamic pressure air bearing performance test apparatus as set forth in claim 1, wherein: the fixed component is arranged on the chassis (8), and a lever meter is arranged on the chassis (8).
4. A performance test apparatus for a radial dynamic pressure air bearing as claimed in any one of claims 1 to 3, wherein: the hydrostatic bearing (3) is provided with a position adjusting member along the main shaft (2) for adjusting the position of the hydrostatic bearing (3).
5. The radial dynamic pressure air bearing performance test apparatus as set forth in claim 4, wherein: the position adjusting piece is a gasket.
6. The radial dynamic pressure air bearing performance test apparatus as set forth in claim 4, wherein: the power source (1) is a programmable motor.
7. The radial dynamic pressure air bearing performance test apparatus as set forth in claim 2, wherein: the matching hole of the third fixing ring (7) and the hydrostatic bearing (3) is formed by machining a cutter.
8. The radial dynamic pressure air bearing performance test apparatus as set forth in claim 2, wherein: the first fixing ring (5) and the matching hole of the power source (1) are formed by machining in a one-tool process.
9. The radial dynamic pressure air bearing performance test apparatus as set forth in claim 1, wherein: the load assembly comprises a mounting ring (9) fixedly mounted outside the air bearing (4), and a connecting part (10) for integrally connecting a load is arranged on the mounting ring (9).
10. The radial dynamic pressure air bearing performance test apparatus as set forth in claim 9, wherein: the connection (10) is vertically upward or vertically downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321541412.7U CN220104490U (en) | 2023-06-16 | 2023-06-16 | Performance test equipment for radial dynamic pressure air bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321541412.7U CN220104490U (en) | 2023-06-16 | 2023-06-16 | Performance test equipment for radial dynamic pressure air bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220104490U true CN220104490U (en) | 2023-11-28 |
Family
ID=88840955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321541412.7U Active CN220104490U (en) | 2023-06-16 | 2023-06-16 | Performance test equipment for radial dynamic pressure air bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220104490U (en) |
-
2023
- 2023-06-16 CN CN202321541412.7U patent/CN220104490U/en active Active
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