CN204716743U

CN204716743U - Isostatic pressure silicon nitride full ceramic ball bearing

Info

Publication number: CN204716743U
Application number: CN201520405806.9U
Authority: CN
Inventors: 刘修亮
Original assignee: HAINING KOVE BEARING Co Ltd
Current assignee: HAINING KOVE BEARING Co Ltd
Priority date: 2015-06-14
Filing date: 2015-06-14
Publication date: 2015-10-21
Anticipated expiration: 2025-06-14

Abstract

The utility model discloses isostatic pressure silicon nitride full ceramic ball bearing, it relates to a kind of mechanical fitting, is specifically related to the full ceramic ball bearing of high strength.He comprises outer shroud, inner ring, ball ball, retainer, main shaft; Described ball ball is arranged between outer shroud and inner ring, outer shroud and ball ball are made up of hot-isostatic pressure silicon nitride, and ball ball is full ceramic ball, and retainer is in the surrounding of ball ball, partly wrap up ball ball, guidance spheres ball also holds it in bearing, and main shaft is arranged on inner ring inside, can realize rotation at a high speed, outer shroud is fixed in bearing support, outer shroud and inner ring have a respective outer raceway and interior raceway respectively, and face each other, respective concave surface is towards the other side.The utility model beneficial effect is: its structure is simple, and can adapt to higher rotation speed, have and bear high load capacity, be applicable to the environment of higher temperature, intensity is high, and overall mechanical property is good, and running accuracy is high, long service life.

Description

Isostatic pressure silicon nitride full ceramic ball bearing

Technical field

The utility model relates to a kind of mechanical fitting, is specifically related to isostatic pressure silicon nitride full ceramic ball bearing.

Background technique

Heat and other static pressuring processes is placed into by goods in airtight container, impose high temperature to equal pressure, under the influence of high pressure and temperature to goods applying is each simultaneously, goods are sintered and densification, and hot isostatic pressing is that high performance material is produced and indispensable means developed by new material; Hot isostatic pressing can direct powder compacting, powder loads in jacket (similar mould action), jacket can adopt metal or ceramic making (low carbon steel, Ni, Mo, glass etc.), then uses nitrogen, argon gas makes pressurizing medium, makes powder directly heat pressure sintering shaping; Or the foundry goods that the foundry goods after shaping comprises the Shrinkage cavity such as aluminum alloy, titanium alloy, refractory alloy is carried out hot densification process, and after hip treatment, foundry goods can reach 100% densification, improves the overall mechanical property of foundry goods.

Hot isostatic pressing technique advantage is the advantage of thermal-arrest pressure and isostatic pressed, and forming temperature is low, and product is fine and close, excellent performance, therefore be necessary means prepared by high performance material, all achieve industrialization in the U.S., Japan and Europe at present, in ocean, the application of the field such as Aero-Space, automobile.China starts late, the sixties in 20th century, more domestic R&D institutions have carried out a series of research, comprise the exploitation of hot isostatic apparatus, the exploitation of the aerial high-temperature alloy powder turbine disk, the research and development of hot isostatic pressing high performance material, achieve a series of achievement in research and progress prize in scientific and collective technology.

Non-shrinking inorganic material when silicon nitride ceramics is a kind of sintering, the intensity of silicon nitride is very high, especially hot pressed silicon nitride (HPSN), is one of the hardest in the world material.It makes raw material with silica flour, first make required shape by usually shaping method, preliminary nitrogenize is carried out in nitrogen and under the high temperature of 1200 DEG C, wherein a part of silica flour and nitrogen are reacted and generates silicon nitride, at this moment whole base substrate has had certain intensity, then in the High Temperature Furnaces of 1350 DEG C ~ 1450 DEG C, carry out second time nitrogenize, be reacted into silicon nitride, the silicon nitride reaching solid density 99% can be obtained with hot pressing sintering method.

Bearing is a kind of important spare part in contemporary machinery, and its major function is supported mechanical solid of rotation, reduces the friction factor in its movement process, and ensures its rotating accuracy.Bearing needs to adapt to high rotating speed, has and bears high load capacity, and the temperature that common bearing pivoting friction produces is high, and product consistency is low, and insufficient strength is high, and overall mechanical property is general.

Model utility content

The purpose of this utility model is defect for prior art and deficiency, the isostatic pressure silicon nitride full ceramic ball bearing that a kind of structure is simple, reasonable in design, easy to use is provided, it can adapt to higher rotation speed, have and bear high load capacity, be applicable to the environment of higher temperature, intensity is high, and overall mechanical property is good, long service life.

In order to solve the problem existing for background technique, the technical solution adopted in the utility model is: it comprises outer shroud, inner ring, ball ball, retainer, main shaft; Described ball ball is arranged between outer shroud and inner ring, outer shroud and ball ball are made up of hot-isostatic pressure silicon nitride, ball ball is full ceramic ball, retainer is in the surrounding of ball ball, partly wrap up ball ball, guidance spheres ball also holds it in bearing, main shaft is arranged on inner ring inside, can realize rotation at a high speed, outer shroud is fixed in bearing support, and outer shroud and inner ring have a respective outer raceway and interior raceway respectively, face each other, respective concave surface is towards the other side, and ball ball is arranged between raceway, and inner ring, main shaft, ball ball and outer shroud are assembled into one.

After adopting said structure, the utility model beneficial effect is: its structure is simple, and can adapt to higher rotation speed, have and bear high load capacity, be applicable to the environment of higher temperature, intensity is high, and overall mechanical property is good, and running accuracy is high, long service life.

Accompanying drawing explanation

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

Fig. 2 is retainer plan view of the present utility model.

Description of reference numerals: outer shroud 1, inner ring 2, ball ball 3, retainer 4, main shaft 5.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described.

In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with the drawings and the specific embodiments, the utility model is further elaborated.Should be appreciated that embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.

As depicted in figs. 1 and 2, this embodiment adopts following technological scheme: it comprises outer shroud 1, inner ring 2, ball ball 3, retainer 4, main shaft 5, described ball ball 3 is arranged between outer shroud 1 and inner ring 2, outer shroud 1 and ball ball 3 are made up of hot-isostatic pressure silicon nitride, ball ball 3 is full ceramic ball, retainer 4 is in the surrounding of ball ball 3, partly wrap up ball ball 3, guidance spheres ball 3 also holds it in bearing, it is inner that main shaft 5 is arranged on inner ring 2, rotation at a high speed can be realized, outer shroud 1 is fixed in bearing support, outer shroud 1 and inner ring 2 have a respective outer raceway and interior raceway respectively, face each other, respective concave surface is towards the other side, ball ball 3 is arranged between raceway, inner ring 2, main shaft 5, ball ball 3 and outer shroud 1 are assembled into one.

This embodiment structure is simple, and can adapt to higher rotation speed, have and bear high load capacity, be applicable to the environment of higher temperature, intensity is high, and overall mechanical property is good, and running accuracy is high, long service life.

The above, only in order to the technical solution of the utility model to be described and unrestricted, other amendment that those of ordinary skill in the art make the technical solution of the utility model or equivalently to replace, only otherwise depart from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of right of the present utility model.

Claims

1. isostatic pressure silicon nitride full ceramic ball bearing, is characterized in that comprising outer shroud (1), inner ring (2), ball ball (3), retainer (4), main shaft (5); Described ball ball (3) is arranged between outer shroud (1) and inner ring (2), retainer (4) surrounding in ball ball (3), partly wrap up ball ball (3), guidance spheres ball (3) also holds it in bearing, it is inner that main shaft (5) is arranged on inner ring (2), and outer shroud (1) is fixed in bearing support.

2. isostatic pressure silicon nitride full ceramic ball bearing according to claim 1, it is characterized in that described outer shroud (1) and ball ball (3) are made up of hot-isostatic pressure silicon nitride, ball ball (3) is full ceramic ball.

3. isostatic pressure silicon nitride full ceramic ball bearing according to claim 1, it is characterized in that described outer shroud (1) and inner ring (2) have a respective outer raceway and interior raceway respectively, face each other, respective concave surface is towards the other side, ball ball (3) is arranged between raceway, and inner ring (2), main shaft (5), ball ball (3) and outer shroud (1) are assembled into one.