CN201083231Y

CN201083231Y - Automatic aligning axial direction displacement precision bearing

Info

Publication number: CN201083231Y
Application number: CNU2007200857532U
Authority: CN
Inventors: 李文喜
Original assignee: XIANGFAN ZHENBEN TRANSMISSION APPARATUS CO Ltd
Current assignee: Xiangyang Zhenben Transmission Equipment Co., Ltd.
Priority date: 2007-07-10
Filing date: 2007-07-10
Publication date: 2008-07-09
Anticipated expiration: 2017-07-10

Abstract

The utility model discloses a precision bearing with self alignment and axial displacement, which consists of an inner ring, an outer ring and a roller. The utility model is characterized in that: the inner bearing ring (3) and the outer bearing ring (1) have opposite bearing races, the roller with convex curved surface (2) is arranged in the races, and the roller with convex curved surface and the races have a lengthwise cross section profile; a shallow and narrow groove (5) is arranged on the inner circular face of the outer bearing ring (1), and opening collars (4) are arranged on one end or two ends of the opposite inner and outer rings. The utility model has self-alignment and axial displacement functions, and the inner ring and the outer ring can make relative axial displacement through internal structures; a spiral groove on the outer ring can improve the lubrication of the roller with due anti-lock function.

Description

But a kind of self-aligning axial displacement precision bearing

Technical field

The utility model relates to a kind of bearing, specifically, but is a kind of self-aligning axial displacement precision bearing, belongs to technical field of bearings.

Background technique

In the prior art, bearing with aligning displacement function is an aligning displacement roller bearing, structure is generally: roller is a convex, biserial is distributed in the Internal and external cycle both sides, raceway on the outer ring is a sphere, roller can be swung along raceway, but can not axial displacement, and the relative inner ring of roller can only be done the rotation of circumferencial direction, but in actual use, the relative Internal and external cycle of roller can produce axial displacement, because the restriction of structure, the outer ring generally maintains static, can only finish by the displacement between the inner ring axle with matching, owing to be made as interference fit between Internal and external cycle and the roller, cause displacement resistance bigger, this resistance can directly change again and is added on roller and the raceway, cause bearing life to shorten, cause early stage damage, and inner ring relatively the displacement meeting of axle cause the wearing and tearing of axle, operating accuracy is reduced.

Summary of the invention

But the purpose of this utility model provides a kind of self-aligning axial displacement precision bearing, but a kind of self-aligning axial displacement curved surface roller or roller bearing, utilize roller and bearing inner race to improve the radial load ability, this roller bearing can roll annulate shaft under the situation of displacement at bearing, Internal and external cycle can roll annulate shaft to displacement by bearing, make bearing have bigger thrust, and make it have certain anti-lock function by the spiral chute on the outer ring.

The technical solution of the utility model is, but a kind of self-aligning axial displacement precision bearing, constitute by inner ring and outer ring, roller, it is characterized in that: inner bearing ring (3) has relative bearing race with outer bearing ring (1), convex surface roller (2) is installed in the raceway, convex surface roller and raceway have the cross section profile of lengthwise, are provided with shallow narrow groove (5) on the inner headed face of outer bearing ring (1), are provided with expanding ring (4) in relative Internal and external cycle both ends or one end.

But a kind of self-aligning axial displacement precision bearing described in the utility model, the inner headed face of outer bearing ring (1) is provided with shallow narrow groove (5), and groove is spiral yarn shaped.

But a kind of self-aligning axial displacement precision bearing described in the utility model, the bearing race both ends or one end that inner bearing ring (3) is relative with outer bearing ring (1) are provided with expanding ring (4), the collar bi-side are the plane, the beneficial effects of the utility model are: but 1, have a self-aligning axial displacement function, use angle does not influence load-carrying properties in 0.5 degree the time; 2, Internal and external cycle can reach the purpose of relative axial displacement by the structural feature of inside; 3,, and has certain anti-lock function by the greasy property of the raising of the spiral chute on the outer ring to roller.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is roller among Fig. 1, outer bearing ring relative displacement schematic representation.

Fig. 3 is that the roller among Fig. 1 is placed in the middle, the schematic representation after the interior outer bearing ring relative displacement.

1. bearing outer rings, 2. roller, 3. bearing inner race, 4. collar, 5. spiral grooves in the drawings.

Embodiment

In the embodiment in figure 1, the inner headed face of bearing outer ring (1) is made as raceway in curvilinerar figure or the camber line shape, the periphery of bearing inner race (3) is made as curvilinerar figure or the outer raceway of camber line shape, between bearing outer ring (1) raceway relative, roller (2) is housed with bearing inner race (3), on the interior raceway of bearing outer ring (1), be provided with spiral groove (5), after loading lubricant oil in the raceway, fill up lubricant oil in the groove (5) and can improve greasy property roller, simultaneously, can can discharge raceway internal cause metal friction by the zigzag shape groove and be trapped in tiny metal powder grain in the raceway, when bearing runs up, to avoid metal powder grain to cause harm to roller, roller and inside and outside raceway are not destroyed, and keep and increase the service life, and have certain anti-lock function.In outer bearing ring (1) two ends of the outer raceway of the two ends of raceway or interior circle and inner bearing ring (3) or cylindrical be respectively equipped with inner groovy and outside groove, in the groove opposite plane expanding ring (4) is installed in the raceway, or only interior raceway and outside a termination of raceway establish groove respectively.Mounting plane expanding ring (4) in groove, the purpose of establishing collar (4) is to prevent that roller drops out in the installation process, can overcome dust simultaneously and enter the wear problem that quickens in the raceway bearing.

In Fig. 2 embodiment, when the roller bearing inner ring install and fix on the equipment the axle after, the omission bearing inner race installs and fixes accompanying drawing and the details on the axle among this figure, when axle and the skew that affacts load direction on the bearing, make roller (2) and outer bearing ring produce axial displacement, because the sliding contact between roller and raceway, the internal friction that produces in bearing is very little, make roller and bearing outer ring produce displacement, the working life that can keep roller bearing so be easy to reach.

In the embodiments of figure 3, after the inside and outside circle of bearing (1,3) relatively moved, roller remained on position placed in the middle, and except radial internal clearance reduced to some extent, its bearer properties did not almost change.The heavily loaded roller bearing of this specific character energy particularly suitable axial displacement.

Claims

1. but self-aligning axial displacement precision bearing, constitute by inner ring and outer ring, roller, it is characterized in that: inner bearing ring (3) has relative bearing race with outer bearing ring (1), convex surface roller (2) is installed in the raceway, convex surface roller and raceway have the cross section profile of lengthwise, on the inner headed face of outer bearing ring (1), be provided with shallow narrow groove (5), be provided with collar (4) in relative Internal and external cycle both ends or one end.

But 2. a kind of self-aligning axial displacement precision bearing according to claim 1, it is characterized in that: the inner headed face of outer bearing ring (1) is provided with shallow narrow groove (5), and groove is a spirality.

3. but a kind of self-aligning axial displacement precision bearing according to claim 1 is characterized in that: the bearing race both ends or one end that inner bearing ring (3) is relative with outer bearing ring (1) are provided with expanding ring (4), and the collar bi-side are the plane.