Slit throttling gas bearing rotary table
An air-floating turntable and slit technology, which is applied to workbenches, large fixed members, metal processing machinery parts, etc., can solve problems that affect work stability and precision, prone to air hammer vibration, and reduce installation efficiency, etc., to achieve improved Accuracy, prevention of air hammer vibration and microscopic beating phenomenon, and stable work
Pending Publication Date: 2020-07-24
苏州智润精工科技有限公司
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Problems solved by technology
Most of the existing air-floating turntables are in the form of small hole throttling, and the existence of small hole throttling is prone to air hammer vibration and microscopic jumping phenomenon due to the existence of the air cavity, which affects the working stability and accuracy; at the same time, the current air-floating turntable The structure makes it inconvenient to assemble and reduces installation efficiency
Method used
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[0024] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0025] like figure 1 , figure 2 and image 3 A slit throttling air-floating turntable is shown, which includes a rotating shaft 9, a worktable 1 arranged on the end surface of the rotating shaft 9, a driving part for driving the rotating shaft 9 to rotate, and an air bearing arranged on the rotating shaft 9 and supporting the rotating shaft 9, and the rotating shaft 9 includes the main body of the rotating shaft, the upper flange 91 and the lower flange 92 located on the main body of the rotating shaft. The upper flange 91, the lower flange 92 and the main body of the rotating shaft can be directly integrally formed or assembled by screws. The flange 91 is integrally formed with the main body of the rotating shaft, and the lower flange 92 is assembled with the main body of the rotating shaft through screws; the workbench 1 is arranged on the upper flange 91, the d...
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The invention relates to a slit throttling gas bearing rotary table. The table comprises a rotating shaft, a workbench, a driving part and a gas bearing; the rotating shaft comprises a rotating shaftmain body, an upper flange and a lower flange; the workbench is arranged on the upper flange; the driving part is arranged on the lower flange; the gas bearing comprises a lower thrust boss, a radialthrottling sleeve, a radial end ring and a gas chamber outer sleeve, wherein a gas chamber is formed between the gas chamber outer sleeve and the radial throttling sleeve, a lower positioning step isarranged on the lower thrust boss, and a lower thrust circular ring is arranged on the lower positioning step; an upper thrust boss is arranged between the workbench and the upper flange, an upper positioning step is arranged on the upper thrust boss, an upper thrust circular ring is arranged on the upper positioning step, and a spacing ring is arranged between the upper thrust circular ring and the lower thrust circular ring; and a slit is formed in the radial throttling sleeve, a slit is formed in the upper positioning step, a slit is formed in the lower positioning step, and gas enters theouter surface of the rotating shaft through the slits to form a gas film. The vibration of a pneumatic hammer and the micro jump phenomenon are prevented, the work is more stable and the better precision is realized.
Description
technical field [0001] The invention relates to the technical field of precision machining, in particular to a high-precision slit throttling air-floating turntable. Background technique [0002] The air-floating turntable is a high-precision rotary positioning device. It is composed of a rotating shaft, a throttle, a servo motor, and a circular grating. Precise rotary positioning; air-bearing turntables are widely used in ultra-precision machining and measurement fields, and their rotary accuracy and circumferential positioning accuracy have a decisive impact on processing and measurement performance. Most of the existing air-floating turntables are in the form of small hole throttling, and the existence of small hole throttling is prone to air hammer vibration and microscopic jumping phenomenon due to the existence of the air cavity, which affects the working stability and accuracy; at the same time, the current air-floating turntable The structure makes it inconvenient t...
Claims
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IPC IPC(8): B23Q1/38B23Q11/12B25H1/00
CPCB23Q1/38B23Q11/126B25H1/00
Inventor 陈万群许泽先宋来运滕翔宇霍德鸿丁辉
Owner 苏州智润精工科技有限公司