CN2871955Y

CN2871955Y - Composite bearing

Info

Publication number: CN2871955Y
Application number: CN 200420009725
Authority: CN
Inventors: 许启兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-11
Filing date: 2004-11-11
Publication date: 2007-02-21
Anticipated expiration: 2014-11-11

Abstract

The utility model disclose a composite bearing, comprising an inner ring and an outer ring which can make bearing rotate smoother and extend the period of usage. The inner ring made of ceramic material is provided with an inner wall around an axis line and defines out an axis hole. The outer ring made of metallic powder is provided with the inner ring. After press-forming, agglomeration and vacuum oil-immersion, the outer ring is combined with the inner ring into a whole and provided with wall around the inner ring and defining out a run-through hole. Therefore, taking the advantages of high strength and anti-corrosion of the inner ring, the period of usage of the bearing can be extended and with lubricant supply to the inner ring through the outer ring can further reduces the resistance of friction.

Description

Composite bearing

Technical field

The utility model relates to a kind of bearing, particularly relates to a kind of composite bearing with the various material characteristic.

Background technique

General self-lubricating bearing is divided into metal bearing and ceramic bearing two kinds again according to material.Metal bearing has preferable guarantor's oiliness, but because the material characteristic easily wears away, working life is shorter, causes rotating shaft that disappearances such as deflection, vibration are arranged.Though and ceramic bearing has abrasion performance, working life than characteristics such as length, but because the compactness of material, make the oily effect of guarantor relatively poor, so, this ceramic bearing is under the situation of lubricant oil deficiency, and the frictional resistance between rotating shaft can significantly promote, and causing friction to heat up, the rotating shaft rotation is had some setbacks, and can influence working life equally.

For solving above-mentioned disappearance, consult Fig. 1, a kind of self-lubricating bearing in conjunction with metallic material and stupalith, as No. 524286 case of Taiwan Announcement Number, mainly be assembly 1,2, after difference machine shaping with two unlike materials, be combined as a whole to compel fastening fixed compound mode again, whereby, can utilize the material characteristic of two assemblies 1,2, with abrasion performance and protect effects such as oiliness is good.Though said modules 1,2 can be with the characteristic of various material, yet, when it uses in reality, still there is following disappearance and needs to be resolved hurrily:

This assembly 1 is in order to be combined as a whole with this assembly 2, must be after machine shaping, make in addition can for this assembly 2 place into a holding cavity 11, and this assembly 1,2 must consider its axle center whether on same axis in assembling, smoothness in the time of just guaranteeing rotating shaft (figure does not show) rotation, whole working life, smoothness when reaching rotating shaft (figure does not show) transmission, therefore, at this assembly 1,2 adopt separately manufacturing compels to set up jointly under the situation of dress again, often there is the processing precise degree to control really, disappearances such as the concentricity value is bigger, cause processing to be difficult for, manufacture cost is higher, and after this rotating shaft (figure does not show) is installed, beat is arranged easily, vibration, and noise produces the difficulty that has significantly promoted manufacturing and assembled.

The model utility content

The purpose of this utility model is to provide a kind of easy to manufacture and abrasion performance, protects the good composite bearing of oiliness.

Characteristics of the present utility model are: this composite bearing comprises a ring and an outer ring in one.Ring has around an axis and defines an internal ring wall of an axis hole in the pottery; The outer ring of metallic dust is equipped with ring in this, described outer ring with should interior ring be combined as a whole, and have around ring in this and define an external annulus of a perforation.

Whereby, utilize high strength, anti abrasive interior ring can prolong the working life of this bearing, ring provides lubricant oil ring in this beyond reaching, and further reduces frictional resistance.

Description of drawings

Below by most preferred embodiment and accompanying drawing composite bearing of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is a three-dimensional exploded view, and the bearing of Taiwan Announcement Number the 524286th is described;

Fig. 2 is a sectional view, and one first preferred embodiment of the utility model one composite bearing is described;

Fig. 3 is a flow chart, and the manufacturing process of this first preferred embodiment is described;

Fig. 4 is a sectional view, and one second preferred embodiment of the utility model one composite bearing is described.

Embodiment

Consult Fig. 2, Fig. 3, the preferred embodiment of composite bearing of the present utility model comprises a ring 3 and an outer ring 4 in one.

The interior ring made from stupalith 3 has around an axis X and defines an internal ring wall 32 of an axis hole 31.

Should outer ring 4 be to be after powder or copper iron powder mix mutually with metallic dust such as copper, be equipped with in the ring 3 in this (figure does not show), the outer ring 4 of compressed moulding, sintering, vacuum intruded pitch with should in ring 3 be combined as a whole, this outer ring 4 has around ring in this 3 and defines an external annulus 42 of a perforation 41.This external annulus 42 has a relative recess 422 that is somebody's turn to do interior ring 3 at an inner peripheral surface 421, and ring 3 is filled out and is combined in this recess 422 in this.

Whereby, can pass the axis hole 31 of ring 3 in this and the perforation 41 of the outer ring 4 of this metallic dust for a rotating shaft 5.And this interior ring 3 made from stupalith, have smooth surface, characteristics such as friction is little, intensity is high, wear-resistant, acidproof inspection corrosion, can effectively reduce and the frictional resistance of 5 of rotating shafts, and be somebody's turn to do the outer ring made from metallic material 4, have and protect characteristics such as oiliness is good, available lubricant oil further reduces frictional resistance in the axis hole 31 of interior ring 3.

Importantly,, can guarantee that the axle center is positioned on the same axis, make this rotating shaft 5 more smooth and easy when rotated, and significantly reduced the noise that produces, and can prolong working life of the present utility model owing to should interior ring 3 be one-body molded with being somebody's turn to do outer ring 4.

Ginseng figure reads 4, is the utility model second preferred embodiment, and itself and first preferred embodiment are roughly the same, difference be in: recess 422 of ring 4 is formed in the position of a contiguous end face outside this.Whereby, this second preferred embodiment can utilize high strength, anti abrasive interior ring 3 to increase the service life equally, and ring 4 provides lubricant oil ring 3 in this in addition, further reduces frictional resistance.

According to the above as can be known, composite bearing of the present utility model has following advantages and effect:

Ring 3 be one-body molded with same mould with being somebody's turn to do outer ring 4 in the utility model, therefore, This interior ring 3 is positioned on the same axis with the axle center of being somebody's turn to do outer ring 4, guarantees this rotating shaft 5 Smoothness during rotation and smoothness can by the characteristic of unlike material, reduce abrasion, reduce Frictional resistance, to promote service life, whereby, the utility model not only can be controlled processing really Precision, it is minimum that concentricity is down to, and can promote the simplification when making, and reduce Manufacturing cost.

Claims

1, a kind of composite bearing is characterized in that it includes:

Ring has around an axis and defines an internal ring wall of an axis hole in the pottery;

The outer ring of metallic dust is equipped with ring in this, described outer ring with should interior ring be combined as a whole, and have around ring in this and define an external annulus of a perforation.

2, composite bearing as claimed in claim 1 is characterized in that, a rotating shaft passes the axis hole of ring in the described pottery and the perforation of the outer ring of metallic dust.

3, composite bearing as claimed in claim 1 is characterized in that, this external annulus has a relative recess that is somebody's turn to do interior ring at an inner peripheral surface, and ring is filled out and is combined in this recess in this.