Conical air floating shaft system

Abstract

The invention relates to a conical air floating shaft system, which comprises an air floating main shaft, an air floating inner shaft sleeve, an air floating outer shaft sleeve, and positioning plates, wherein the air floating inner shaft sleeve is arranged on the outer side of the air floating main shaft, and is matched with the air floating main shaft, the air floating outer shaft sleeve is arranged on the outer side of the air floating inner shaft sleeve, and is matched with the air floating inner shaft sleeve, and the positioning plates are arranged on both ends of the air floating main shaft. The positioning plates are fixedly connected with the air floating main shaft. Both ends of the air floating outer shaft sleeve are provided with an anti-thrust plate. The anti-thrust plate is fixedly connected with the positioning plate. In the prior art, the positioning accuracy of the existing air floating shaft system is not high, and the dry friction is easily generated. With the present invention, the technical problems in the prior art are solved, and the conical air floating shaft system is provided, wherein the conical air floating shaft system integrates the advantages of the air floating main shaft, the air floating main shaft is matched with the air floating shaft sleeves so as to effectively improve the stiffness of the shaft system, the conical surface match is adopted so as to provide high centering accuracy, and it can be ensured that the air floating shaft system of the present invention has high accuracy when the off-axis end surface is high.

Description

technical field [0001] The invention relates to an air-floating shafting system, in particular to a tapered air-floating shafting system. Background technique [0002] Turnover benchmark is one of the core technologies in precision / ultra-precision measuring instruments, experimental equipment and manufacturing equipment. Due to the advantages of high rotary motion precision, high displacement sensitivity and minimal friction loss, the air-bearing shaft system has been increasingly used as a high-precision rotary reference in the above-mentioned equipment. [0003] At present, the basic structure of the commonly used air bearing shaft system is mainly composed of two parts: the air bearing main shaft and the air bearing sleeve. When the air film gap is formed in the axial and radial directions to form gas support and lubrication, the air bearing main shaft can drive the load in the air bearing. Rotary movement in the shaft sleeve. However, the existing air bearing main shaf...

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Problems solved by technology

[0004] In order to solve the technical problems of low positioning accuracy and easy dry friction in the existing air-floating shafting system, the present invention provides a conical air-floating shafting system, which not only integrates the advantages of the air-floating shafting shaft, Moreover, the tapered fit between the air-floated spindle and the air-floated bushing can effectively improve the rigidity of the shafting system. At the same time, due to the high centering accuracy of the tapered surface fit, it can ensure that the air-floated shafting system still has a high end surface off the shaft. higher precision

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