A two-degree-of-freedom rotating bearing

Abstract

The invention discloses a two-degree-of-freedom rotating bearing, which comprises a bearing inner ring, a bearing outer ring, inner balls, a central shaft, and an outer ball; The center of the ball is located on the axis of rotation of the inner ring of the bearing; between the inner and outer rings of the bearing, one or more rings of inner balls are evenly arranged; the outer ring of the bearing is matched with the inner ring of the bearing; the central shaft is inserted in the inner ring of the bearing, There is a circumferential boss on the central shaft, and an outer ball is arranged symmetrically along the axis of the central shaft between the circumferential boss and an end face of the outer ring; the central shaft drives the inner ring of the bearing, along the central rotation axis of the outer ring of the bearing Rotate, and / or rotate within a certain angle with the center of the spherical inner cavity of the outer ring of the bearing as the center, along the direction perpendicular to the plane formed by the axis of the central shaft and the center line of the two outer balls; the bearing has a compact structure , easy maintenance and can be applied to the Stirling engine field.

Description

Technical field [0001] The invention relates to a bearing, in particular to a two-degree-of-freedom rotary bearing with two degrees of freedom in vertical rotation. The bearing can be used in axial transmission mechanisms such as a swash plate or a wobble plate. Background technique [0002] Bearings are used to fix and reduce the friction coefficient of load during mechanical transmission. Bearings are a pivotal component in contemporary machinery and equipment. Its main function is to support the mechanical rotating body to reduce the friction coefficient of the mechanical load during the transmission of the equipment. According to the different friction properties of moving elements, bearings can be divided into rolling bearings and sliding bearings. Generally speaking, bearings are mostly ball and roller bearings. Rolling bearings are precision mechanical components that change the sliding friction between the rotating shaft and the shaft seat into rolling friction, thereby...

AI Technical Summary

Problems solved by technology

However, traditional bearings can only satisfy the rotational motion of one degree of freedom. For some special applications, such as the Stirling engine field of transmission mechanisms such as swash plate or wobble plate, the rotation of two degrees of freedom is often involved. Traditional bearings It is difficult to meet the application needs

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