CN202790092U

CN202790092U - Dual-metal joint bearing

Info

Publication number: CN202790092U
Application number: CN2012201008632U
Authority: CN
Inventors: 刘利利
Original assignee: DALIAN HONGRUN COMPOSITE BEARING Co Ltd
Current assignee: DALIAN HONGRUN COMPOSITE BEARING Co Ltd
Priority date: 2012-03-16
Filing date: 2012-03-16
Publication date: 2013-03-13
Anticipated expiration: 2022-03-16

Abstract

The utility model discloses a dual-metal joint bearing, and belongs to the technical field of a high-performance dual-metal self-lubricating composite bearing. An abrasion-resistant layer of the dual-metal joint bearing is arranged on the inner surface of an outer ring of the bearing or the outer surface of an inner ring of the bearing; a self-lubricating copper alloy layer is generated on the inner surface of the outer ring of the bearing or the outer surface of the inner ring of the bearing by adopting a dual-metal centrifugal casting mode for the abrasion-resistant layer; a plurality of blind holes with the depths reaching the outer ring of the bearing or the inner ring of the bearing are arranged on the copper alloy layer; and the blind holes are filled with solid lubricating agents fully. The dual-metal joint bearing is simple in structure, improves the production efficiency obviously, breaks through the design concept that copper is abraded by utilizing steel completely traditionally, creates high use value with minimum copper alloy consumption, saves nonferrous metal using amount greatly, and is low in manufacturing cost.

Description

A kind of bimetal joint shaft bearing

Technical field

The utility model relates to a kind of bimetal joint shaft bearing, belongs to high performance double metal self-lubricating composite bearing technical field.

Background technique

Along with the development of heavy machinery, the demand of high-performance joint shaft bearing progressively improves.For adapting to the prior art condition, the bimetal composite bearing arises at the historic moment.Because Cuprum alloy has the high preferably lubrication effect that reaches of intensity, the working surface of therefore existing self-lubricating knuckle bearing is Cuprum alloy face solid lubricant inlaid mostly, its structural type and manufacture method have following several basically: a kind of is to adopt casting method to cast out whole joint shaft bearing outer ring or the inner ring of Cuprum alloy tubular that be, machined inner ball surface or outer spherical surface, even cloth hole on sphere, solid lubricant is embedded in the hole, processes through mill again.Because inner ring or outer ring integral body are Cuprum alloy, exist a large amount of non-ferrous metals of waste, technique is loaded down with trivial details, cost is high problem.Another kind be with the copper alloy powder spreading on steel plate, form bimetal plate by sintering, and through the repeatedly rolling and processing that eliminates stress, make the low composite board of porosity ratio, roll again and be processed into bearing inner race, steel outer ring internal diameter interference assembling with joint shaft bearing exists the Product Assembly poor reliability, easily produces displacement and complex structure, loaded down with trivial details, the high in cost of production shortcoming of technique when using.In addition, because sintering process to the restriction of steel plate material, needs to adopt the low low-carbon steel plate of mechanical strength as the bimetal substrate, to such an extent as to extrusion-deformation easily occurs under the working condition of heavy load, can't be complementary with bearing outer ring intensity.

Summary of the invention

In order to solve the existing problem of prior art, the utility model provides a kind of bimetal joint shaft bearing.This bearing should have simple in structure, saves non-ferrous metal, and processability is good, and bearing capacity is high, the characteristics such as good reliability.

Technical solution of the present invention is: a kind of bimetal joint shaft bearing, it mainly comprises bearing outer ring, bearing inner race and wearing layer.Described bearing outer ring adopts two inner ball surface textural associations together, described bearing inner race adopts an outer spherical surface structure, two inner ball surface structures and outer spherical surface structure consist of the sliding motion structure of working in coordination, described wearing layer is arranged on the internal surface of bearing outer ring or on the outer surface of bearing inner race, the mode that wearing layer adopts bimetal centrifugal casting on the internal surface of bearing outer ring or the outer surface of bearing inner race generate the copper alloy layer of selflubricating, be provided with a plurality of blind holes that deeply reach bearing outer ring or bearing inner race at copper alloy layer, solid lubricant is full of blind hole.

The thickness of described copper alloy layer is 0.5～5mm, and the degree of depth of blind hole is 6～10mm.

Described copper alloy layer is to adopt aluminum bronze, aluminium brass, brass, tin bronze or lead bronze to carry out centrifugally cast wearing layer.

The beneficial effects of the utility model are: the wearing layer of this bimetal joint shaft bearing is arranged on the internal surface of bearing outer ring or on the outer surface of bearing inner race, the mode that wearing layer adopts bimetal centrifugal casting on the internal surface of bearing outer ring or the outer surface of bearing inner race generate the copper alloy layer of selflubricating, be provided with a plurality of blind holes that deeply reach bearing outer ring or bearing inner race at copper alloy layer, solid lubricant is full of blind hole.This bimetal joint shaft bearing has simple in structure, and manufacturing efficiency significantly improves, and has broken through tradition and has utilized steel to the design concept of copper friction fully, creates higher use value with minimum Cuprum alloy consumption, saves in a large number the non-ferrous metal use amount, and manufacture cost is lower.

Description of drawings

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

Fig. 1 is a kind of structural drawing of bimetal joint shaft bearing.

Among the figure: 1, bearing outer ring, 2, bearing inner race, 3, copper alloy layer, 4, solid lubricant, 5, blind hole.

Embodiment

Fig. 1 shows a kind of structural drawing of bimetal joint shaft bearing.Among the figure, a kind of bimetal joint shaft bearing has two bearing outer rings 1, bearing inner race 2 and wearing layer, bearing outer ring 1 structure is identical, bearing inner race 2 has an outer spherical surface, the outer spherical surface of the inner ball surface of two bearing outer rings 1 and the bearing inner race 2 composition sliding bearing of working in coordination, wearing layer is arranged on the internal surface of bearing outer ring 1, also can be arranged on the outer surface of bearing inner race 2, the mode that wearing layer adopts bimetal centrifugal casting on the internal surface of bearing outer ring 1 or the outer surface of bearing inner race 2 generate the copper alloy layer 3 of selflubricating, be provided with a plurality of blind holes 5 that deeply reach bearing outer ring 1 or bearing inner race 2 at copper alloy layer 3, solid lubricant 4 is full of blind hole 5.The very thin thickness of copper alloy layer 3, generally between 0.5～5m m, blind hole 5 will penetrate copper alloy layer 3, and the general degree of depth is 6～10mm.Copper alloy layer 3 can adopt aluminum bronze, aluminium brass, brass, tin bronze or lead bronze to carry out spun casting.

The manufacture method of above-mentioned bimetal joint shaft bearing, adopt the following step:

A. bearing outer ring 1 internal surface or bearing inner race 2 outer surfaces before casting are carried out profiling roughing on request, and after carrying out cleaning, the surface is coated with borax soln;

B. will be attached to bearing outer ring 1 internal surface or bearing inner race 2 outer surfaces by the Cuprum alloy of the technical requirements mode by centrifugal casting;

D. processing blind hole 5 on 3 of copper alloy layers, the degree of depth is to make by prior art requirement regulation;

E. solid lubricant inlaid 4;

F. by existing method machining bearing inner ring 2 or bearing outer ring 1;

G. to through bearing outer ring 1 or the bearing inner race 2 of casting edge copper and bearing inner race 2 or bearing outer ring 1 fine finishing of pressing the copper alloy layer of existing method processing, be assembled to finished product.

Claims

1. bimetal joint shaft bearing, it mainly comprises bearing outer ring (1), bearing inner race (2) and wearing layer, it is characterized in that: described bearing outer ring (1) adopts two inner ball surface textural associations together, described bearing inner race (2) adopts an outer spherical surface structure, two inner ball surface structures and outer spherical surface structure consist of the sliding motion structure of working in coordination, described wearing layer is arranged on the internal surface of bearing outer ring (1) or on the outer surface of bearing inner race (2), the mode that wearing layer adopts bimetal centrifugal casting on the internal surface of bearing outer ring (1) or the outer surface of bearing inner race (2) generate the copper alloy layer (3) of selflubricating, be provided with a plurality of blind holes (5) that deeply reach bearing outer ring (1) or bearing inner race (2) at copper alloy layer (3), solid lubricant (4) is full of blind hole (5).

2. a kind of bimetal joint shaft bearing according to claim 1, it is characterized in that: the thickness of described copper alloy layer (3) is 0.5～5m m, the degree of depth of blind hole (5) is 6～10mm.

3. a kind of bimetal joint shaft bearing according to claim 1 is characterized in that: described copper alloy layer (3) is to adopt aluminum bronze, aluminium brass, brass, tin bronze or lead bronze to carry out centrifugally cast wearing layer.