Shape memory alloy bearing and assembling method thereof

Abstract

The invention provides a shape memory alloy bearing. The shape memory alloy bearing comprises a bearing outer ring (1), a bearing inner ring (2) and a self-lubricating layer (3), wherein the bearing outer ring (1), the self-lubricating layer (3) and the bearing inner ring (2) are sequentially arranged from outside to inside; a first groove is formed in the inner side of the bearing outer ring (1);an arc surface matched with the first groove is arranged on the outer side of the bearing inner ring (2); the self-lubricating layer (3) is arranged in the first groove; and the self-lubricating layer (3) is arranged outside the arc surface. After the bearing inner ring of the shape memory alloy bearing is assembled and formed according to a conventional process, the shape of the bearing inner ring is changed at a low temperature, the size of the outer spherical surface of the bearing inner ring is reduced to be smaller than the size of the opening part of the bearing outer ring, then the bearing inner ring is assembled into the bearing outer ring, finally, the bearing is placed at the room temperature, and the bearing inner ring recovers to an original shape so as to achieve the purposeof assembly.

Description

technical field [0001] The invention relates to an alloy bearing, in particular to a shape memory alloy bearing and an assembly method thereof, in particular to a shape memory alloy joint bearing and an assembly method thereof. Background technique [0002] In the past, spherical plain bearings were generally assembled by extrusion or splicing of two hemispherical outer rings. The disadvantage of extrusion molding is that the fit between the inner spherical surface of the bearing outer ring and the outer spherical surface of the bearing inner ring is not easy to control, and the outer spherical surface of the bearing outer ring The dimensional accuracy of the spherical surface is not high. The bearing outer ring spliced ​​with two hemispherical outer rings is two independent parts. The bearing outer ring is not an independent individual. When using it, force must be applied to both ends of the outer ring at the same time to achieve installation. , there are certain limitatio...

AI Technical Summary

Problems solved by technology

[0002] In the past, spherical plain bearings were generally assembled by extrusion or splicing of two hemispherical outer rings. The disadvantage of extrusion molding is that the fit between the inner spherical surface of the bearing outer ring and the outer spherical surface of the bearing inner ring is not easy to control, and the outer spherical surface of the bearing outer ring The dimensional accuracy of the spherical surface is not high. The bearing outer ring spliced ​​with two hemispherical outer rings is two independent parts. The bearing outer ring is not an independent individual. When using it, force must be applied to both ends of the outer ring at the same time to achieve installation. , there are certain limitations in the use of

[0003] Existing joint bearings cannot meet the high machining accuracy of the spherical fit of the inner and outer rings of the complete bearing at the same time

As a result, the local position affects the bearing performance due to stress concentration or notch sensitivity

In addition, existing spherical plain bearings have limitations in the selection of materials

Images