CN203641269U

CN203641269U - Novel bidirectional thrust angular contact ball bearing

Info

Publication number: CN203641269U
Application number: CN201320768051.XU
Authority: CN
Inventors: 严伯坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-29
Filing date: 2013-11-29
Publication date: 2014-06-11
Anticipated expiration: 2023-11-29

Abstract

The utility model discloses a novel bidirectional thrust angular contact ball bearing. The novel bidirectional thrust angular contact ball bearing comprises steel balls, a bearing outer ring, a bearing inner ring and a grease feeding channel, wherein an inner baffle edge and an outer baffle edge are respectively formed on the inner side and the outer side of an arc-shaped channel of the bearing outer ring; the bearing inner ring is provided with an arc-shaped channel which is matched with the bearing outer ring; an inner baffle edge and an outer baffle edge are respectively formed on the inner side and the outer side of an arc-shaped channel of the bearing inner ring; and the grease feeding channel for conveying lubricating grease to the steel balls is formed in the bearing inner ring. According to the novel bidirectional thrust angular contact ball bearing disclosed by the utility model, the working surfaces of the bearing channels and the steel balls are radiated, the sliding friction and the friction torque of the bearing are reduced, and the work efficiency of the bearing is improved.

Description

Novel bidirectional angular contact thrust ball bearing

Technical field

The utility model relates to a kind of bearing, especially a kind of novel bidirectional angular contact thrust ball bearing.

Background technique

In lathe and machinery, the normal ball screw that uses does transmission component, will rotatablely move and convert linear motion to, or change torque axis into axial repetitiousness active force.For obtaining highi degree of accuracy, high efficiency and reversible transmission effect, as the supporting structure of leading screw often need to bear simultaneously radial load, axially bidirectional load, with prefastening load and there is higher axial rigidity.Mostly traditional supporting means is with two covers or overlaps bearing more to be used in combination, utilize each shaft strength and bearing behavior share suffered load and obtain composite rigidity, but have the large and heating defect of axial rigidity deficiency or surface friction drag, and bearing apolegamy technical requirements is high, combination installation precision is difficult for ensureing; Have in recent years and adopt the application of single cover biserial angle contacting thrust ball bearing as leading screw supporting, can obtain higher axial rigidity and lower surface friction drag, but it is with two covers or to overlap bearing combined structure the same more, need to have special bearing mounting bracket (or bearing support), and high to bearing saddle bore required precision, difficulty of processing is large.In addition in bearing, damage bearing lubrication or cause stuck for preventing that cutting fluid, metal fillings and dust in lathe from entering, need to be that every cover bearing or bearing combination arrange applicable sealing and special lubrication system, complex structure and uneconomical, the physical dimension that has simultaneously increased bearing bracket (or bearing support), has limited lathe and machinery towards less, compacter future development.

Model utility content

The purpose of this utility model is for the deficiencies in the prior art, and a kind of effective, practical novel bidirectional angular contact thrust ball bearing is provided.

For achieving the above object, the utility model is achieved through the following technical solutions:

Novel bidirectional angular contact thrust ball bearing, comprise steel ball, bearing outer ring, bearing inner race and feed fat passage, it is characterized in that: described steel ball is arranged between bearing outer ring and bearing inner race and fixes with retainer, described bearing outer ring has respectively inner retaining side and outer rib in inner side and the outside of its circular arc raceway groove, the position that described bearing inner race matches with bearing outer ring is raceway groove, described bearing inner race bottom is provided with the spacer ring that adopts two halves formula structure, and described bearing inner race below is provided with flange mounting hole.

In the novel bidirectional angular contact thrust ball bearing of above-mentioned one, be provided with hello the fat passage of carrying lubricating grease to steel ball in described bearing outer ring, the described fat passage of feeding is provided with two oil filler plugs outward.

In the novel bidirectional angular contact thrust ball bearing of above-mentioned one, the raceway groove that described bearing inner race matches with the circular arc raceway groove of bearing outer ring.

In the novel bidirectional angular contact thrust ball bearing of above-mentioned one, the inner retaining side end face of described bearing outer ring and arc raceway groove inner retaining side and raceway groove tangent and bearing inner race is tangent.

In the novel bidirectional angular contact thrust ball bearing of above-mentioned one, outer rib chamfering α is 50 degree～60 degree.

The beneficial effects of the utility model are: novel bidirectional angular contact thrust ball bearing is dispelled the heat bearing channel and steel ball working face and reduces sliding friction and the friction torque of bearing, greatly improves the working efficiency of bearing.

Brief description of the drawings

Fig. 1 is overall schematic of the present utility model.

Fig. 2 is the sectional view of bearing outer ring of the present utility model.

Fig. 3 is the sectional view of bearing outer ring of the present utility model

Embodiment

For to structure of the present utility model, feature and effect thereof, can have and further understand and be familiar with, now lift a preferred embodiment, and be described with reference to the accompanying drawings as follows:

As shown in Figure 1, the described novel bidirectional angular contact thrust ball bearing of the present embodiment, comprise steel ball 3, bearing outer ring 1, bearing inner race 2 and hello fat passage 6, it is characterized in that: steel ball 3 is arranged between bearing outer ring 1 and bearing inner race 2 fixing with retainer 5, bearing outer ring 1 has respectively inner retaining side 9 and outer rib 10 in inner side and the outside of its circular arc raceway groove 13, the position that described bearing inner race 2 matches with bearing outer ring 1 is raceway groove 11, bearing inner race 2 bottoms are provided with the spacer ring 4 that adopts two halves formula structure, bearing inner race 2 belows are provided with flange mounting hole 8, in bearing outer ring 2, be provided with hello the fat passage 6 of carrying lubricating grease to steel ball 3, outside hello fat passage 6, be provided with two oil filler plugs 7, the raceway groove 11 that matches with the circular arc raceway groove 13 of bearing outer ring 1 of bearing inner race 2, inner retaining side end face 12 inner retaining side 9 tangent with arc raceway groove 13 and bearing inner race 2 of bearing outer ring 1 is tangent with raceway groove 11, outer rib 10 chamfering α are 50 degree～60 degree.

Bidirectional angular contact thrust ball bearing of the present utility model is dispelled the heat bearing channel and steel ball working face and is reduced sliding friction and the friction torque of bearing, greatly improves the working efficiency of bearing.

The foregoing is only the preferred embodiment of the utility model; not limit practical range of the present utility model with this; all persons that is familiar with technique; use principle of the present utility model and technical characteristics; various changes and the decoration done, within all should being covered by the protection category that these claims define.

Claims

1. a novel bidirectional angular contact thrust ball bearing, comprise steel ball (3), bearing outer ring (1), bearing inner race (2) and hello fat passage (6), it is characterized in that: described steel ball (3) is arranged between bearing outer ring (1) and bearing inner race (2) fixing with retainer (5), described bearing outer ring (1) has respectively inner retaining side (9) and outer rib (10) in inner side and the outside of its circular arc raceway groove (13), the position that described bearing inner race (2) matches with bearing outer ring (1) is raceway groove (11), described bearing inner race (2) bottom is provided with the spacer ring (4) that adopts two halves formula structure, described bearing inner race (2) below is provided with flange mounting hole (8).

2. novel bidirectional angular contact thrust ball bearing as claimed in claim 1, it is characterized in that: in described bearing outer ring (2), be provided with hello the fat passage (6) of carrying lubricating grease to steel ball (3), described feeds fat passage (6) outer two oil filler plugs (7) that are provided with.

3. novel bidirectional angular contact thrust ball bearing as claimed in claim 1, is characterized in that: the raceway groove (11) that described bearing inner race (2) matches with the circular arc raceway groove (13) of bearing outer ring (1).

4. novel bidirectional angular contact thrust ball bearing as claimed in claim 1, is characterized in that: the inner retaining side end face (12) of described bearing outer ring (1) inner retaining side (9) tangent with circular arc raceway groove (13) and bearing inner race (2) is tangent with raceway groove (11).

5. novel bidirectional angular contact thrust ball bearing as claimed in claim 1, is characterized in that: outer rib (10) chamfering α is 50 degree～60 degree.