CN105570309A

CN105570309A - Oil-containing bearing

Info

Publication number: CN105570309A
Application number: CN201410519103.9A
Authority: CN
Inventors: 王江林
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-10-07
Filing date: 2014-10-07
Publication date: 2016-05-11

Abstract

The present invention discloses an oil-containing bearing with characteristics of low production cost, good wear resistance, good lubricating property, and gluing resistance. The oil-containing bearing comprises a bearing ring made from metal powder, and a bearing hole, wherein an inner ring made from metal powder is arranged between the bearing ring and the bearing hole, the inner ring contacts the bearing ring and has the porosity of less than the porosity of the bearing ring, the inner ring is made from copper powder, iron powder or iron-copper powder, and the inner ring and the bearing ring are connected in a dovetail-arranged-in-dovetail-groove manner. According to the present invention, the porosity of the bearing ring can be increased to increase the lubricating oil content, such that the high lubricating oil content bearing ring can provide more lubricating oil for the inner ring having the porosity of less than the porosity of the bearing ring and arranged inside the bearing ring so as to improve the lubricating property in the case of increase of wear resistance of the inner ring.

Description

A kind of oil-impregnated bearing

Technical field

The present invention relates to bearing, particularly a kind of oil-impregnated bearing.

Background technique

Oil-impregnated bearing, i.e. porous bearings, take metallic dust as main material, common used material has: copper powders, iron powder, iron-copper powder, adopt the sintering body that powder metallurgic method makes, they itself be exactly Porous, and have in the fabrication process can compared with the quantity of free adjustment hole, size, shape and distribution etc.Oil-impregnated bearing is in non-operating state, lubricant oil is full of its hole, thermal expansion coefficient due to oil-impregnated bearing is greater than the thermal expansion coefficient of lubricant oil, during work, lubricant oil is squeezed into rubbing surface from the hole of oil-impregnated bearing, and when quitting work, lubricant oil declines in the hole of sucked back oil-impregnated bearing with temperature again.Oil-impregnated bearing have cost low, can absorbing, noise little, within the longer operating time without features such as lubricating oil fillings, be specially adapted to the working environment not easily lubricating or do not allow oil dirty.Porosity is an important parameter of oil-impregnated bearing.The oil-impregnated bearing worked under high speed, underloading requires that oil content is many, and porosity should be high, and greasy property is good, but wear-resisting property is low; High at the oil-impregnated bearing desired strength of the more lower work of low speed, load, porosity should be low, and wear-resisting property is good, but greasy property is poor.During the oil-impregnated bearing work of making by iron powder, also easily occur to glue together phenomenon with the steel axle be rotatably connected in oil-impregnated bearing.When the oil-impregnated bearing wear resistance using copper powders to make can improve greatly, because the porosity in the race ring of oil-impregnated bearing is low, fewer containing lubricants capacity, cause its greasy property low, cost of production is also high, and profit is also low.

Summary of the invention

The technical problem that the present invention solves is to provide that a kind of cost of production is low, wear resistance and greasy property is good, the oil-impregnated bearing of gummed phenomenon not easily occurs.

Technological scheme of the present invention completes like this, a kind of oil-impregnated bearing, include race ring and bearing hole composition that metallic dust makes, described race ring and the inner ring lower than race ring porosity being provided with the metal powder that contacts with race ring between bearing hole and making.

Further preferred embodiment, described inner ring is made up of copper powders, iron powder or iron-copper powder.

Further preferred embodiment, described inner ring is connected with the form be located in dovetail groove by dovetail between race ring.

Further preferred embodiment, uniform porose on described inner ring.

Further preferred embodiment, described hole is square hole, prismatic hole or circular hole.。

Technique effect of the present invention is, the porosity of race ring can be improved by the present invention, increase it containing lubricants capacity, race ring containing lubrication innage can provide more lubricant oil for the inner ring lower than race ring porosity be located at inside race ring, when inner ring wear-resisting property improves, lubricity also reaches raising.As make by copper powders inner ring time, can make full use of the good characteristic of copper wear-resisting property, relative to the oil-impregnated bearing that copper powders is made, copper consumption also reduces accordingly, thus realizes the object that reduces costs, also has good lubricity and wear resistance technique effect.Utilize the characteristic that copper is softer, the present invention is the contact of copper and steel between centers, overcomes the contact of iron and steel axle, effectively can solve the gummed phenomenon of oil-impregnated bearing and steel between centers.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Fig. 2 is the A-A cross-sectional view of Fig. 1.

Fig. 3 is the structural representation of another embodiment of the present invention.

Fig. 4 is the B-B cross-sectional view of Fig. 3.

Fig. 5 is that this is provided with the inner ring deployed configuration schematic diagram of circular hole embodiment with novel inner ring.

Fig. 6 is that this is provided with the inner ring deployed configuration schematic diagram of prismatic hole embodiment with novel inner ring.

Embodiment

By reference to the accompanying drawings the present invention is described in further detail, as shown in Figure 1 and Figure 2, a kind of oil-impregnated bearing, include race ring 3 that metallic dust makes and bearing hole 1 forms, described race ring 3 and the inner ring 2 lower than race ring porosity being provided with the metal powder that contacts with race ring between bearing hole 1 and making.Described inner ring 2 is made up of copper powders, iron powder or iron-copper powder.

For effectively preventing, between inner ring 2 with race ring 3, relative rotational slide occurs, as shown in Figure 3, Figure 4, described inner ring 2 be located at mode in dovetail groove by dovetail between race ring 3 and be connected.

As shown in Figure 5, Figure 6, on inner ring 2 uniform porose 4, it is inboard that lubricant oil passing hole 4 can enter into inner ring 2 very easily, and then can improve its greasy property further.Hole 4 on inner ring 2 can be set to square hole, prismatic hole or circular hole.Hole 4 diameter described herein is greater than the pore diameter in inner ring.

Claims

1. an oil-impregnated bearing, includes race ring and bearing hole composition that metallic dust makes, it is characterized in that: described race ring and the inner ring lower than race ring porosity being provided with the metal powder that contacts with race ring between bearing hole and making.

2. a kind of oil-impregnated bearing according to claim 1, is characterized in that: described inner ring is made up of copper powders, iron powder or iron-copper powder.

3. a kind of oil-impregnated bearing according to claim 1 and 2, is characterized in that: described inner ring is connected with the form be located in dovetail groove by dovetail between race ring.

4. a kind of oil-impregnated bearing according to claim 3, is characterized in that: uniform porose on described inner ring.

5. a kind of oil-impregnated bearing according to claim 4, is characterized in that: described hole is square hole, prismatic hole or circular hole.