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Air supported head gas bearing

A technology of gas bearings and floating heads, which is applied in the direction of bearings, shafts, bearings, mechanical equipment, etc., and can solve problems such as pressure loss, high dimensional accuracy of orifice holes, and uneven pressure

Inactive Publication Date: 2012-02-29
WUXI MACHINETOOL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under normal operating conditions, the pressure is the highest at the orifice, and the pressure loss around the orifice is serious and the pressure is uneven, resulting in a small bearing capacity.
[0003] Moreover, this structure has high requirements on the dimensional accuracy of the orifice, which needs to be placed on the gas bearing very accurately. The surface processing accuracy of the bearing floated by the gas bearing using the pressure difference is high, and its processing is difficult and costly.

Method used

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  • Air supported head gas bearing
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Embodiment Construction

[0011] See figure 1 , which includes a bearing 1, a bearing housing 2, an air inlet 3, the air inlet 3 runs through the central axis of the ball screw 4, the threaded end 5 of the ball screw 4 is threadedly connected to the bearing housing 2; the ball head of the ball screw 4 The end 7 is close to the bearing 1, the ball end 7 of the ball screw 4 is connected to the floating head 9 through the gland 8, the floating head 9 is embedded with a porous material layer 10, the air inlet 3 is connected to the porous material layer 10, the air inlet 3 and the A gap 11 is left between the porous material layers 10 , and the porous material layer 10 is parallel to the surface of the bearing 1 that the porous material layer 10 faces.

[0012] The outer end surface of the bearing cover 2 is provided with a nut installation groove 12; the nut 6 is fastened to connect the threaded end 5 of the ball screw 4 and the bearing cover 2, and one end of the nut 6 fits in the nut installation groove ...

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Abstract

The invention relates to an air supported head gas bearing, which is characterized of uniform pressure, big carrying capacity and low processing difficulty. The gas bearing comprises a bearing, a bearing shell and an air inlet, wherein the air inlet penetrates through the central shaft of a bulb screw, thread of the thread end of the bulb screw is connected with the bearing shell, the bulb end ofthe bulb screw is close to the bearing shaft, the bulb end of the bulb screw contacts the spherical surface of the air supported head, a porous material layer is embedded in the air supported head, the air inlet is communicated with the porous material layer, and the porous material layer is parallel to the bearing surface opposite to the porous material layer.

Description

(1) Technical field [0001] The invention relates to the field of air static pressure bearing equipment, in particular to a floating head gas bearing. (2) Background technology [0002] The existing gas bearing force guiding structure obtains a gas film by supplying compressed gas from an orifice on the bearing surface to the bearing gap, and floats the bearing by using the pressure difference. Under normal operating conditions, the pressure is the highest at the orifice, and the pressure loss around the orifice is serious, and the pressure is uneven, resulting in a small bearing capacity. [0003] Moreover, this structure requires high dimensional accuracy of the orifice, which needs to be placed on the gas bearing very accurately, and requires high surface processing accuracy of the bearing that is floated by the pressure difference of the gas bearing, and its processing is difficult and costly. (3) Contents of the invention [0004] In view of the above problems, the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C32/06
Inventor 储湘华蒋书运郭东明朱凯旋朱祥龙
Owner WUXI MACHINETOOL