Flexible rotary bearing

Abstract

The invention discloses a flexible rotary bearing, the inner twist pipe (1) is nested in the outer twist pipe (2) coaxially and one end is fastening-connected, another end of inner twist pipe (1) andouter twist pipe (2) are the installing end which can be connected with other equipments separately, the outer twist pipe (2) and the inner twist pipe (1) are machined with several segments of twist section in same (or different) length axially. The twist section is composed by several flexible films (thin films) which are installed along circumference uniformly and axially, annular connecting solid in certain thickness is left between each twist sections and links each twist section sequentially. The flexible films are radial surface and installed between said annular connecting solids, and the number is even number and the flexible films are installed axial-symmetrically and circumferentially. The invention has high rotary movement precision and high replication rotary movement precision, stable movement, no lubrication needed when works, compact structure, not responsive to dust, strong corrosion resistance performance and low use cost, it is suitable for the replacement of traditional rotary bearings in micro precision equipments (such as micro-processing machine, micro-measurement equipment) to achieve the purposes of lifting equipment performance, reducing use and maintenancecosts.

Description

technical field [0001] The invention relates to a bearing, in particular to a flexible slewing bearing. Background technique [0002] Rotary accuracy is one of the key performance indicators of precision equipment. Many applications of precision engineering, such as precision rotary tables (such as roundness meters, etc.) among various precision measuring equipment, precision processing equipment and micro-nano processing devices Rotary spindles, rotary arms in various precision pose adjustment devices (such as micro-manipulation robots in biomedicine), etc., all put forward high precision requirements for rotary motion. [0003] The key to rotation accuracy lies in the bearings used. The traditional precision slewing bearings developed at present are mainly divided into two categories: sliding bearings and rolling bearings. Sliding bearings include ordinary sliding bearings, aerostatic bearings, hydrodynamic / hydrostatic bearings, magnetic bearings, etc. Rolling bearings ...

AI Technical Summary

Problems solved by technology

In terms of its working principle, traditional bearings are either relative rolling or relative sliding, so there is inevitably rolling friction or sliding friction. Under the small scale range, according to the principle of scale effect (size effect), the influence of friction will be Significant increase over conventional sizes, causing the slewing performance of conventional bearings to drop sharply as the bearing size decreases

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