A linear guide rail ultrasonic suspension extrusion film hydrostatic bearing

A linear guide rail and hydrostatic bearing technology, applied in the field of bearings, to achieve the effects of low wear, simple structure and high precision

Inactive Publication Date: 2011-12-14
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The deficiency of the prior art is that the outside world needs to provide compressed air

Method used

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  • A linear guide rail ultrasonic suspension extrusion film hydrostatic bearing
  • A linear guide rail ultrasonic suspension extrusion film hydrostatic bearing
  • A linear guide rail ultrasonic suspension extrusion film hydrostatic bearing

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with drawings and embodiments. The linear guide rail ultrasonic suspension extruded film hydrostatic bearing includes a piezoelectric stack actuator 4, a fastening screw 5, a suspension bushing 3 and a flexible hinge 2, the suspension bushing 3 is installed on the linear guide rail 1, and the suspension bushing 3 is composed of four The two surfaces are connected by a flexible hinge 2 to form a rectangular bushing, and one of the four rectangular faces of the suspension bushing 3 has an air gap opening with a width of 2 mm. Fastening is provided on both sides of the air gap opening The vertical wall of the piezoelectric stack actuator 4 , a group of piezoelectric stack actuators 4 are fastened on the vertical wall by fastening screws 5 , and the initial preload is adjusted by adjusting the fastening screws 5 .

[0015] When the bearing system of this embodiment is working, the piezoelectric stack actua...

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Abstract

The invention discloses a linear supersonic wave suspended extruded film static pressure bearing. The bearing comprises a linear guide rail, a suspended sleeve, a piezoelectric stack performer, and a fastening screw, the end face of the suspended sleeve is rectangular in shape, and the suspended sleeve is arranged on the linear guide rail. The bearing is characterized in that: the linear supersonic wave suspended extruded film static pressure bearing also comprises a flexible hinge; a rectangular sleeve is formed by connecting four surfaces of the suspended sleeve with the flexible hinge; oneof the four rectangular surfaces of the suspended sleeve is provided with an air gap penetrating the width; two sides of the air gap are provided with vertical walls for fastening the piezoelectric stack performer; and the piezoelectric stack performer is fastened on the vertical walls by the fastening screw, and initial pretightening force is adjusted by the fastening screw. A system of the bearing which has the advantages of no contact, low wearing, high precision, simple structure, no need of any subsidiary gas source equipment and the like can be widely applied to precise machineries, apparatuses, instruments, pneumatic suspension positioning and the like.

Description

technical field [0001] The invention belongs to the technical field of bearings, in particular to a gas static pressure bearing, in particular to an ultrasonic suspension extrusion film static pressure bearing. Background technique [0002] Gas lubricated bearings have a series of advantages such as small friction loss, almost no frictional heat at extremely high speeds, no wear, no crawling at extremely low speeds, high motion precision, small vibration, no pollution, and can work stably in special environments. It can be used as a bearing for high-speed rotary spindle or linear guideway. [0003] The non-contact linear guides in the prior art are mainly static pressure air bearing linear guides. Its working principle is that when the slider moves on the linear guide rail, static pressure gas is sprayed from the guide rail, and the static pressure gas supports the slider to suspend on the air film. , which greatly reduces the friction between the slider and the guide rail,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/06
Inventor 李东明崔云先费继友贾颖
Owner DALIAN JIAOTONG UNIVERSITY
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