Parallel microchannel spray nozzle type layer flow static-pressure throttleer for anti-thrust
A gas static pressure, restrictor technology, applied in the direction of bearings, shafts and bearings, mechanical equipment, etc., can solve the problems of large gas film vibration and low rigidity, and achieve the effect of high stability and high rigidity
Inactive Publication Date: 2011-09-07
CHINA JILIANG UNIV
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Problems solved by technology
[0004] In order to overcome the problems of large gas film vibration and low rigidity caused by traditional gas static pressure thrust restrictors, the purpose of the present invention is to provide a parallel micro-channel nozzle type laminar flow thrust gas static pressure restrictor
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Embodiment Construction
[0021] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0022] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 As shown, there are more than 8 microchannels 4 on the working surface where the restrictor main body 1 of the present invention combines with the mating plug 2, and an acute angle less than 45° is formed between the outlet section of the microchannel 4 and the working surface. The microchannel openings on the surface of the device main body 1 are respectively connected with pressure equalizing grooves 7, and the adjacent microchannels are separated by a grid 5. The nozzle type hole is connected with the air inlet hole of the restrictor body 1, and the nozzle type hole is connected with the matching plug 2. For interference fit, the working surface of the fitting plug 2 is a concave curved surface, and a throttle hole is opened in the center of the concave c...
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The invention discloses a parallel microchannel spray nozzle type layer flow static-pressure throttleer for anti-thrust, comprising a main throttleer body and a coordination plug, wherein a combined working surface of the main throttleer body and the coordination plug is provided with more than 8 microchannels; an acute angle less than 45 degrees is formed between a microchannel outlet section and the working surface; microchannel openings positioned on the surface of the main throttleer body are respectively connected with pressure equalizing grooves; adjacent microchannels are separated by using a barrier; a spray nozzle type hole is communicated with an air inlet of the main throttleer body and is in interference fit with the coordination plug; the working surface of the coordination plug is a concave curved surface; and the center of the concave curved surface is provided with a throttling orifice. The invention has higher rigidity and higher stability of a static-pressure system air film compared with the traditional throttleer for the anti-thrust and is suitable for an air static-pressure throttleer for the anti-thrust.
Description
technical field [0001] The invention relates to gas static pressure lubrication technology, in particular to a gas static pressure restrictor for parallel microchannel nozzle type laminar flow type thrust. Background technique [0002] With the development of my country's equipment manufacturing industry, there is a requirement for ultra-precision instruments and equipment to take the road of independent innovation. Among them, the accuracy of shafting and guide rails as basic components is one of the key "bottlenecks" that must be overcome in ultra-precision engineering technology. [0003] For gas static pressure devices, the accuracy can be basically guaranteed when measuring with micron-level precision, but in the application of nanometer-level precision, large-scale (tens of nanometers) random vibrations are likely to occur between the moving pair when the gas film is formed , for ultra-precision instruments, machine tools and equipment, this vibration becomes the most ...
Claims
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IPC IPC(8): F16C32/06
Inventor 李东升郭天太禹静张雯
Owner CHINA JILIANG UNIV