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A high-speed precision rotating shaft with high air pressure seal

A rotating shaft, high air pressure technology, applied in the direction of engine seals, engine components, mechanical equipment, etc., can solve problems such as damage, affecting the sealing performance of rotating shafts, oil seals and sealing rings, etc.

Active Publication Date: 2015-12-23
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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  • A high-speed precision rotating shaft with high air pressure seal

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Embodiment Construction

[0011] The examples given below are intended to further illustrate the present invention, but cannot be understood as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the art based on the content of the present invention still belong to the protection of the present invention. range.

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

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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 specifically 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. As the essential core components of CNC machine tools, precision rotating shafts (spindles) are widely used. Used in ultra-precision CNC machine tools. At present, most of the precision rotating shafts (spindles) dedicated to CNC machine tools are imported in China (Taiwan, Japan, Europe, etc.), but most countries restrict certain high-speed precision rotating shafts (spindles) due to the protection of core technology. China exports. [0003] These imported precision rotating shafts (spindles) are expensive, have long lead times, complex structures, and inconvenient maintenance after ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/40
Inventor 赵春花
Owner KUNSHAN YUNCO PRECISION IND TECH
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