Air flotation type rotary table

A technology of air-floating turntables and air-floating sleeves, which is applied in the direction of air cushion bearings, machines/brackets, large fixed members, etc., can solve the problems of poor accuracy and stability, and achieve the effect of improving axial static stiffness

Active Publication Date: 2014-01-29
GUANGZHOU HAOZHI ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, these traditional rotating devices need to be driven by an interme...

Method used

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  • Air flotation type rotary table
  • Air flotation type rotary table
  • Air flotation type rotary table

Examples

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Embodiment Construction

[0018] Below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described:

[0019] See figure 1 , the present invention relates to an air bearing turntable 100 , which includes a base 10 , an air bearing shaft 30 , an air bearing sleeve 50 , a torque motor 70 , an air inlet pipe 90 and a reading device 99 . The air bearing 50 is installed on the base 10 . The air bearing shaft 30 is set in the air bearing sleeve 50 . The bottom 32 is connected with the air bearing shaft 30 and can float upward with the air bearing shaft 30 relative to the air bearing sleeve 50 when the air intake pipe 90 is ventilated, and at the same time rotate relative to the air bearing sleeve 50 under the action of the torque motor 70 . The readout device 99 is used to control the rotational speed or positioning of the torque motor 70 .

[0020] The base 10 includes an upper base 11 and a lower base 13 connected to the upper base 11 . The upper bas...

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PUM

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Abstract

The invention discloses an air floatation type rotary table which comprises an air floatation shaft and an air floatation sleeve. The air floatation shaft comprises a shaft portion, a top portion and a bottom portion, wherein the top portion and the bottom portion are arranged at the two opposite ends of the shaft portion respectively, the top portion comprises upper thrust surfaces which are opposite to the bottom portion, and the bottom portion comprises lower thrust surfaces which are opposite to the top portion. The air floatation sleeve comprises upper air flotation surfaces which are located on the top portion and lower air flotation surfaces which are located on the bottom portion, wherein the upper air flotation surfaces are in clearance fit with the upper thrust surfaces, the lower air flotation surfaces are in clearance fit with the lower thrust surfaces, and the inner surface of the air flotation sleeve is in clearance fit with the outer surface of the shaft portion. A plurality of air outlets which are connected with an external high-pressure air source are formed in the inner surfaces of the upper air flotation surfaces, the inner surfaces of the lower air flotation surfaces and the inner surface of the air flotation sleeve. According to the air floatation type rotary table, due to the fact that the two opposite upper air flotation surfaces and the two opposite lower air flotation surface are arranged on the air flotation sleeve, the axial static rigidity, rotation rigidity and axial rotation precision of the air flotation type rotary table are improved, a workpiece, to be detected, placed on the rotary table can be located at a stable height all the time, and the height where the workpiece is located is not changed along with the change of the air pressure.

Description

technical field [0001] The invention relates to a high-precision air static pressure air floating turntable. Background technique [0002] Turntable equipment has been widely used in the manufacturing industry, such as CNC hydraulic turntable and so on. In the existing air bearing turntable, a servo motor and a shaft coupling are usually used for driving. In addition, only one thrust surface is provided with high-pressure gas in the air bearing, and the other end is in a free state. When the air pressure rises, the air bearing shaft will move slightly toward the free end; when the air pressure decreases, the air bearing shaft will come down again under the action of gravity, that is, the equilibrium position will change with the change of air pressure. On the one hand, these traditional rotating devices need to be driven by an intermediate transmission mechanism, and on the other hand, their precision and stability are not good. Contents of the invention [0003] In vie...

Claims

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Application Information

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IPC IPC(8): F16M11/06F16M11/18F16C32/06
CPCF16C32/0696B23Q1/38B23Q16/102B23Q2210/004B23Q2220/002F16C32/0622F16C2322/39
Inventor 汤秀清
Owner GUANGZHOU HAOZHI ELECTROMECHANICAL
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