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High-speed precision rotating shaft being sealed by high-pressure gas

A rotating shaft and high air pressure technology, which is applied to the sealing of the engine, engine components, mechanical equipment, etc., can solve problems such as damage, easy wear of oil seals and sealing rings, and affecting the sealing performance of the rotating shaft

Active Publication Date: 2013-12-11
KUNSHAN YUNCO PRECISION IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the rotational speed of the rotating shaft increases greatly, the high-speed rotation of the rotating shaft will cause the oil seal and sealing ring in direct contact with it to be easily worn and destroyed quickly, thus affecting the sealing performance of the rotating shaft

Method used

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  • High-speed precision rotating shaft being sealed by high-pressure gas

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Embodiment Construction

[0011] The embodiment given below intends to further illustrate the present invention, but can not be interpreted as the restriction to protection scope of the present invention, those skilled in the art still belongs to the protection of the present invention to some non-essential improvements and adjustments of the present invention according to the content of the present invention scope.

[0012] High-speed precision rotary shafts with high air pressure seals, such as figure 1 As shown, it mainly consists of shaft core (coarse grinding wheel shaft core) 1, rotating shaft cover 16, first angular contact ball bearing 12, second angular contact ball bearing 15, third angular contact ball bearing 6, fourth angular contact ball bearing 3 , Symmetrical structure band locking groove round nut 10 etc. composition. The specific structure is as follows: the outer ring on the left side of the third angular contact ball bearing 6 uses the shaft shoulder in the rotating shaft housing 1...

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Abstract

The invention provides a high-speed precision rotating shaft being sealed by high-pressure gas. The high-speed precision rotating shaft comprises a shaft core which is installed on an angular contact ball bearing. The angular contact ball bearing is fixed in a rotating shaft outer cover. A concave ring is arranged on the inner surface of the outer circumference of the large end of the shaft core. One end of the rotating shaft outer cover is connected with the concave ring. A wedge-shaped structure is arranged on the outer surface of the joint of the rotating shaft outer cover and the concave ring. The other end of the rotating shaft outer cover is fixedly connected with an end cover, a through hole which is parallel to a rotating shaft body is formed in the wall of the rotating shaft outer cover, one end of the through hole is located on the inner side of the concave ring, and an air inlet is formed in the rotating shaft outer cover, penetrates through the rotating shaft outer cover, and is connected with a channel. A wedge-shaped structure is arranged at the joint of the end cover and the shaft core. The rotating shaft is sealed by being filled with high-pressure gas, and an air path is simple; the special wedge-shaped structure is designed, so that high-pressure gas can be smoothly exhausted, and foreign materials can be prevented from entering the rotating shaft.

Description

technical field [0001] The invention belongs to the field of numerical control machine tools and precision motion platforms, and in particular relates to a precision rotating shaft. Background technique [0002] With the continuous development of CNC technology, in order to pursue high-speed and high-precision CNC machining effects, many key core components are used in the field of CNC machine tools. Precision rotating shafts (spindles), as essential core components of CNC machine tools, are widely used In ultra-precision machining CNC machine tools. At present, the precision rotary shafts (spindles) dedicated to CNC machine tools are mostly imported in China (Taiwan, Japan, Europe, etc.), but most countries restrict the use of certain high-speed precision rotary shafts (spindles) for the sake of core technology protection. China export. [0003] These imported precision rotating shafts (spindles) have high prices, long lead times, complex structures, and inconvenient main...

Claims

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Application Information

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IPC IPC(8): F16J15/40
Inventor 赵春花
Owner KUNSHAN YUNCO PRECISION IND TECH
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