An adjustable piezoelectric ceramic oil-sealed hydrostatic bearing
A piezoelectric ceramic and hydrostatic bearing technology, applied in the direction of bearings, shafts and bearings, bearing components, etc., can solve the problems of reduced bearing capacity, reduced bearing cavity pressure, and increased bearing temperature, so as to avoid the reduction of bearing capacity, Low power consumption and high adjustment accuracy
Active Publication Date: 2019-08-23
YANSHAN UNIV
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Problems solved by technology
However, the hydrostatic bearing will generate heat during operation, so that the temperature of the bearing will continue to rise.
The increase in oil temperature will gradually reduce its viscosity, which will lead to a decrease in the pressure of the bearing cavity, thereby reducing the bearing capacity of the bearing
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[0020] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0021] A preferred embodiment of an adjustable piezoelectric ceramic oil-sealed hydrostatic bearing of the present invention, the bearing is a left-right symmetrical structure, including a shaft 1 (50 mm in diameter), a stator 2, and a first outer retaining ring 7- 1. The first skeleton sealing ring 8-1, the first inner retaining ring 9-1, the first piezoelectric ceramic bimorph 10-1, the second outer retaining ring 7-2, the second skeleton sealing ring 8-2, the second Two inner retaining rings 9-2 and the second piezoelectric ceramic bimorph 10-2; the overall structure of the bearing is as follows figure 1 and figure 2 shown.
[0022] The stator 2 is a rotating body, such as Figure 3-4 As shown, there are five coaxial chambers in the revolving body, from left to right respectively the first chamber 23, the second chamber 24, the third cham...
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The invention discloses an adjustable piezoelectric ceramic oil seal edge liquid hydrostatic bearing. The adjustable piezoelectric ceramic oil seal edge liquid hydrostatic bearing comprises a shaft, astator, a first outer check ring, a second outer check ring, a first framework seal ring, a second framework seal ring, a first inner check ring, a second inner check ring, a first piezoelectric ceramic twin lamella and a second piezoelectric ceramic twin lamella. The rotor is a rotary body. Five coaxial rotary body cavities are formed in the rotary body. Four hydrostatic support cavities are evenly distributed in the inner circumference of a third cavity circumferentially. A radial oil inlet is formed in the center of each hydrostatic support cavity. A first piezoelectric ceramic groove anda second piezoelectric ceramic groove are machined in the inner circumference of the second cavity and the inner circumference of the fourth cavity correspondingly. Oil outlets are radially formed inthe top of the inner circumference of the first cavity and the top of the inner circumference of the fifth cavity correspondingly. The first piezoelectric ceramic twin lamella and the second piezoelectric ceramic twin lamella are embedded in the first piezoelectric ceramic groove and the second piezoelectric ceramic groove correspondingly. The piezoelectric ceramic twin lamellas are adopted for adjusting the thickness of a liquid film, the problem that the bearing force of the liquid hydrostatic bearing is lowered due to heating during operation is avoided, and the system stability is maintained.
Description
technical field [0001] The invention relates to the design field of sliding bearings, and is an adjustable piezoelectric ceramic oil-sealed hydrostatic pressure bearing with high stability and high control precision. Background technique [0002] Hydrostatic bearings have the advantages of large load capacity, high motion precision, and long service life, so they have been widely valued and widely used. However, the hydrostatic bearing will generate heat during operation, so that the temperature of the bearing will continue to rise. The increase in oil temperature will gradually reduce its viscosity, which will lead to a decrease in the pressure of the bearing cavity, thereby reducing the bearing capacity of the bearing. Contents of the invention [0003] According to the above-mentioned problems in the prior art, the present invention provides an adjustable piezoelectric ceramic oil-sealed hydrostatic bearing. The invention utilizes the inverse voltage effect of piezoel...
Claims
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IPC IPC(8): F16C32/06F16C33/72
Inventor 赵建华赵计胜高殿荣吴晓晨张国基王哲王进
Owner YANSHAN UNIV
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