CN1090632A

CN1090632A - Rolling bearing with three layer of rolling bodies

Info

Publication number: CN1090632A
Application number: CN93112540A
Authority: CN
Inventors: 黎奇凡
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-01
Filing date: 1993-09-01
Publication date: 1994-08-10

Abstract

A kind of bearing structure, it belongs to Machine Components and Parts Design, manufacturing field, the design of bearing, makes class, for the sliding friction design of eliminating the bearing class.Its major character when smooth operation, reaches roll body and the complete nonslipping pure rolling of inside and outside circle (or two supporting disks) intercropping for adopting the structure of three layers of roll body between roll body, reach the effect that reduces pivot friction.The pivot friction of this structure is little, load capacity is strong, running steadily, good reliability, the life-span is long, limit speed is high.Need not during low speed to lubricate, can be used for mechanically variously, be specially adapted to the bearing that nonmetallic material such as pottery are made.

Description

Rolling bearing with three layer of rolling bodies

The invention technical field: machinery zero, Component Design are made design bearing, the fabrication portion in field.

Background technique: the analysis axle claims inner each interelement friction, can find that it is mainly from each interelement slide relative.The friction that the slide relative of this element produces is a kind of unnecessary friction much larger than the rolling friction between rolling element and the inside and outside circle.Consult " mechanical design handbook " of mechanical industry version society in September, 1991 front page, " mechanical engineering manual " of publishing house of Tsing-Hua University in June, 1991 front page, " the bearing handbook of petroleum industry publishing house version in October nineteen eighty-two, and magazine, the patent documentation of mechanical aspects, visible existing all bearing structures all are individual layer roll body structures.This structure is as if no retainer, and roll body will closely contact, and adjacent roll body surface of contact produces fierce sliding friction with high velocity reversal's slide relative during rotation.When bearing load, very big extruding force is arranged, the increase that this sliding friction power also is directly proportional on the roll body surface of contact.If retainer is arranged, roll body is separated, between do not have sliding friction, but still have slide relative between roll body and the retainer, sliding friction is still arranged, when bearing load, pressure between rolling and retainer increases, and sliding friction power also increases, and loads onto retainer, the roll body number must be reduced, bearing load carrying capacity will be reduced.Also the someone proposes between the adjacent roll body of individual layer roll body to place the scheme of the less interval roll body of diameter, but this has also produced roll body and the rolling friction of supporting structure and the problems such as reduction of bearing load carrying capacity at interval.By above narration as seen, individual layer roll body structure now is difficult fundamentally to avoid this slide relative, so can not eliminate this friction that is brought by slip.

The task of invention: the objective of the invention is to propose one and heavily plant the bearing scheme, to greatest extent the unnecessary friction between reduction or elimination said elements.

The content of invention: the present invention is achieved in that as figure (1) and for example between thrust-bearing two supporting

disks

1,2 of figure (4), adopts three layers of roll body work entad between inner ring 1 and the outer ring 2 or the bearing of other types.Regulate the roll body diameter, make, do not contact with each other with one section very little spacing in interval between one deck roll body.Adjacent two layers roll body and roll body Ha Noi, outer ring or two supporting surfaces closely contact.As figure (1), when the bearing skin was done uniform rotation, the sense of rotation of three layers of roll body was shown in thin circular arc arrow among the figure.The surface of contact moving direction of two elements is identical on each point of contact, and speed is identical, no slide relative.As long as each surface of contact is enough smooth, and enough rigidity, the theoretical value of rolling friction are arranged is zero.So can reach elimination or reduce slide relative to greatest extent, reduce the purpose of frictional resistance to greatest extent.

In this organization plan, each is located surface of contact and adopts inclined-plane, sphere, curved surface, as 8,9 of figure (2), and 5,6 of figure (3), 5,6 of figure (4).Can reduce the slide relative of locating face and roll body like this.

In this organization plan, because sliding friction is got rid of, so long-term operation makes the scaling chip of element surface generation, thereby the resistance that causes has risen to main status.As scheme Z(2) 7 are chip-removal holes, the structure chip removal automatically as figure (3), (4) can reduce the influence of chip.

In this organization plan, require the rigidity of the material of all surface of contact, intensity all high as much as possible, can further reduce rolling friction like this.This material can be selected various high hardness, high-intensity alloy material and stupalith for use.99.5% aluminium sesquioxide pottery, zirconia toughening ceramic, ceramet or the like.

In this organization plan, element requirement on machining accuracy height, tolerance needs very little, and cooperating needs closely; But owing to do not have slide relative, so surface roughness requires and can reduce, this more helps stupalith.

Example (1), the entad single-row three layers of roller bearing of type.As scheming (2): link with screw between inner ring 2 and the baffle plate 6, outer side surface forms a concave race.Be covered with first layer cylindrical roller 5 on it.Outside first layer roller 5, be covered with second layer cylindrical roller 4.Also be processed into the matrix raceway one in order to locate second layer roller surface.Outside the second layer cylindrical roller 4, row expires the 3rd layer of cylindrical roller 3 again.Be the outer ring 1 that there is the matrix raceway inboard outside the 3rd layer of roller 3.There is a chip-removal hole 7 outer ring one.

Example (2), entad single-row three layers of ball of type and curved surface roller bearing.As figure (3), the full first layer spin 3 of row on the raceway of the inner ring 1 that ball receway 5 is arranged.First layer spin 3 effluxes the curved surface cylindrical roller 4 that there is raceway 6 on full second layer surface.Have a roller to be divided into left and right sides two halves in the second layer roller, connect with bolt or rivet, this roller is dismountable, so that accurate assembling.Outside the second layer roller 4 the 3rd layer of roller 3.Outside the 3rd layer of spin 3 is the outer ring 2 that there is raceway the inboard.

Example (3), three layers of ball bearing of push type multiple row are as figure (4).It is first layer ball 4 that disk supporting disk 1 right side of ball receway 5 is arranged.The right side of first layer ball 4 is that second layer ball 4 and keeps circle 3.Their right side is the 3rd a layer of ball.The right side of the 3rd layer of ball is the right supporting disk 2 same with the left side.This example is not an optimum scheme, and is only for reference.

Advantage or effect: this class bearing has following 7 advantages.

(1) friction is little. At the smooth operation state, rolling friction goes to zero, and running up only needs to add an amount of cooling agent. Low-speed running need not to lubricate;

(2) load capacity is strong. Be equivalent to the heavy-duty bearing of roll body solid matter row;

(3) smooth running: because each interelement, the contact play is minimum, smooth running, and noise is little;

(4) rev limit height;

(5) life-span is long;

(6) wearing and tearing are little, reliability, good stability, running accuracy height; Be suitable for various precision optical machineries;

(7) surface finishment requires low.Be suitable for adopting nonmetallic material such as various potteries.

Claims

1, a kind of bearing structure, there are an inner ring and an outer ring (or two supporting disks) to arrange therebetween roll body is arranged, with means of rolling work, its major character is: the present invention adopts the structure of three layers of roll body, when smooth operation, finish completely without the pure rolling of sliding between the roll body and between roll body and the inside and outside circle (or two supporting disks), bearing is made the pure rolling mode and is worked.

2, according to the structure of claim (1), it is characterized by several rows of bits hole or automatic chip removal function, can get rid of chip automatically during work, further reduce resistance.

3, according to the structure of claim (1), it is characterized by dismountable roller baffle plate or dismountable roller so that original paper change and closely accurate assembling.

4, according to the structure of claim (1), it is characterized by the roll body locating face is inclined-plane or curved surface, in order to the slide relative of eliminating on the locating face.