CN102345679A - Self-lubricating alloy bearing - Google Patents
Self-lubricating alloy bearing Download PDFInfo
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- CN102345679A CN102345679A CN2011101963262A CN201110196326A CN102345679A CN 102345679 A CN102345679 A CN 102345679A CN 2011101963262 A CN2011101963262 A CN 2011101963262A CN 201110196326 A CN201110196326 A CN 201110196326A CN 102345679 A CN102345679 A CN 102345679A
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Abstract
The invention discloses a self-lubricating alloy bearing, and aims to provide a self-lubricating alloy bearing with high accuracy, quietness, long service life and low cost. The tolerance accuracy of an axle hole of the self-lubricating alloy bearing can be controlled within 8-15 microns, so that the requirement of a micro-motor on the bearing accuracy can be met. The self-lubricating alloy bearing comprises a bearing lining (1) and a bearing jacket (2), wherein the bearing lining (1) is a post body of which the axle center is provided with an axle hole (3); the axle center of the bearing jacket (2) is provided with a through hole (4); the shape and the size of the through hole (4) are matched with the external shape and size of the bearing lining (1); the bearing lining (1) is made of self-lubricating engineering plastic; the bearing jacket (2) is made of a metal material; the bearing jacket (2) is positioned on the periphery of the side wall of the bearing lining (1), and is compounded integrally with the bearing lining (1); and the axle hole (3) is finally molded by precision machining. The self-lubricating alloy bearing can be widely applied to the field of bearings.
Description
Technical field
The present invention relates to a kind of bearing, relate in particular to a kind of self-lubrication alloy bearing.
Background technique
Bearing is mechanical parts commonly used of going up revolving meber in order to bearing journal or axle, can be divided into rolling friction bearing (rolling bearing) and sliding friction bearing (sliding bearing) according to the working principle of bearing.Rolling bearing mainly is a ball bearing, and ball bearing is a general purpose accessory, and advantage is that the life-span is long, but that inferior position is a noise is big relatively, and bearing is more little simultaneously, and difficulty of processing is big more, and cost is high more.
Sliding bearing is widely used in the micro motor field; This bearing generally adopts the powder metallurgical technique manufacturing; Advantage is that cost is low; Precision is high; Inferior position is that the life-span is short relatively; Shorter in the following life-span of high temperature condition, it is poor to require motor (as being applied to the motor in the radiation fan) harsh and that have the long lifetime to require to show to sound, and these pluses and minuses are mainly determined by its structure and lubrication principle.Oil-impregnated bearing constitutes through powder die-casting sintering and soaking by lubricating oil; Body interior has a lot of micropores with soaking by lubricating oil; The axis hole internal surface have much can seepage lubricant oil micropore, in use, the lubricant oil of impregnation forms the skim oil film at the axis hole internal surface and lubricates realizing.The initial noise of this oil-containing sliding bearing is more much lower than rolling bearing, but its shortcoming is that the life-span is not enough, and reason is that lubricant oil can run off from the hole of bearing and volatilization.If oil mass is more in addition, " getting rid of oil " phenomenon can appear, particularly small motor (like the motor in the computer heat radiation fan), getting rid of oil can pollute, and dust accretion can stuck bearing.Because oil-impregnated bearing is a kind of bearing of boundary lubrication, can inevitably produce metal shaft and contact with the direct of bearing, consequent noise is inevitable, therefore is difficult to satisfy the usage requirement to the demanding motor of noise control.
The engineering plastic bearing that adopts self lubricating material to make has also appearred in the market; It is normally sold as the liner parts separately; The axle sleeve that is used for low speed, heavy duty is used more; Engineering plastic bearing has many good qualities; Simple such as assembling, can satisfy various rigorous environment, metal and plastic friction sound are low; Even quiet, the ability of bearing outside contamination (like contamination by dust) is strong.But the shortcoming of existing engineering plastic bearing is: this engineering plastics axle sleeve can produce contraction when assembling and assembling, cause losing the precision of axis hole, is difficult to satisfy the usage requirement of motor.Particularly in the micro motor field; Axle requires very strictness with the matching gap of bearing, can reach 7～8 microns, for the tolerance of bulk article axis hole at 8 microns～15 microns (promptly in 0.008～0.015mm); Even in 8 microns, could satisfy the design and use requirement of micro motor.If the bearing tolerance is excessive, short-term operation will produce the swing wearing and tearing, and workpiece can not be run well, and causes the bearing premature failure, and the life-span is short, even can't assemble motor at all and use.
Summary of the invention
Technical problem to be solved by this invention is the deficiency that overcomes on the prior art, and the self-lubrication alloy that a kind of precision is high, quiet, the life-span is long, cost is low bearing is provided.
First kind of technological scheme that the present invention adopted is: the present invention includes the bearing liner; Bearing outside; Said bearing liner is the cylinder that the axle center is provided with axis hole; The axle center of said bearing outside is provided with through hole; The shape and the size of the outside of the shape of said through hole and size and said bearing liner are suitable; Said bearing liner adopts the selflubricating engineering plastics to process; Said bearing outside adopts metallic material to process; Said bearing outside be positioned at said bearing liner side wall perimeter and with compound the becoming one of said bearing liner, said axis hole is through precision optical machinery processing final molding.
Said bearing liner is pressed in the said through hole through the interference drive fit, with compound the becoming one of said bearing outside assembling.
The tolerance grade of said axis hole is in 8～15 microns.
Said bearing outside employing copper or iron or Bearing Steel or powdered metallurgical material are processed.
Said bearing liner employing modified polyimide or modified polyetheretherketonefiber or modified polyacetal or modification of nylon 66 are processed.
The profile of said through hole and said bearing liner all is cylindric or is oval column or is the multiaspect column.
Said bearing outside is cylindric or is drum type or stepped.
Second kind of technological scheme that the present invention adopted is: the present invention includes the bearing liner; Bearing outside; Said bearing liner is the cylinder that the axle center is provided with axis hole; The axle center of said bearing outside is provided with through hole; The shape and the size of the outside of the shape of said through hole and size and said bearing liner are suitable; Said bearing liner adopts the selflubricating engineering plastics to process; Said bearing outside adopts metallic material to process; Said bearing outside be positioned at said bearing liner side wall perimeter and with compound the becoming one of said bearing liner, said axis hole is through precision optical machinery processing final molding.
Said bearing liner becomes one with said bearing outside is compound through being injected and molded in the said through hole.
The tolerance grade of said axis hole is in 8～15 microns.
Said bearing outside employing copper or iron or Bearing Steel or powdered metallurgical material are processed.
Said bearing liner employing modified polyimide or modified polyetheretherketonefiber or modified polyacetal or modification of nylon 66 are processed.
The profile of said through hole and said bearing liner all is cylindric or is oval column or is the multiaspect column.
Said bearing outside is cylindric or is drum type or stepped.
The third technological scheme that the present invention adopted is: the present invention includes the bearing liner; Bearing outside; Said bearing liner is the cylinder that the axle center is provided with axis hole; The axle center of said bearing outside is provided with through hole; The shape and the size of the outside of the shape of said through hole and size and said bearing liner are suitable; Said bearing liner adopts the selflubricating engineering plastics to process; Said bearing outside adopts metallic material to process; Said bearing outside be positioned at said bearing liner side wall perimeter and with compound the becoming one of said bearing liner, said axis hole is through precision optical machinery processing final molding.
Said bearing liner directly becomes one with said bearing outside is compound through die press technology for forming.
The tolerance grade of said axis hole is in 8～15 microns.
Said bearing outside employing copper or iron or Bearing Steel or powdered metallurgical material are processed.
Said bearing liner employing modified polyimide or modified polyetheretherketonefiber or modified polyacetal or modification of nylon 66 are processed.
The profile of said through hole and said bearing liner all is cylindric or is oval column or is the multiaspect column.
Said bearing outside is cylindric or is drum type or stepped.
The invention has the beneficial effects as follows: owing to the present invention includes bearing liner, bearing outside; Said bearing liner is the cylinder that the axle center is provided with axis hole; The axle center of said bearing outside is provided with through hole; The shape and the size of the outside of the shape of said through hole and size and said bearing liner are suitable; Said bearing liner adopts the selflubricating engineering plastics to process; Said bearing outside adopts metallic material to process; Said bearing outside be positioned at said bearing liner side wall perimeter and with compound the becoming one of said bearing liner, said axis hole is through precision optical machinery processing final molding; Among the present invention; Said bearing outside is processed by metallic material; Can be through the machining moulding or by the powder metallurgical technique moulding; As the overcoat that guarantees bearing integral structural strength and structure shape; The structure shape flexible design of said bearing outside; External shape can be according to cooperating motor configuration to do respective design with it, like column, drum type, structure shape such as stepped, and other possible complicated shapes; Said bearing liner is processed by the selflubricating engineering plastics; Inner core-body as the friction pair that cooperates with metal shaft; Can give full play to the characteristic of self lubricating material; Its noise in operating is extremely low; Can be applied in the selflubricating in the hot environment; Can accomplish the long lifetime, can accomplish anti-solvent, avoid corrosion according to the material chosen difference; Therefore the present invention does not need soaking by lubricating oil in addition, does not need additionally to add lubricant oil yet, has avoided the appearance phenomenon of " getting rid of oil ", and the oiling agent of also having avoided adopting lubricant oil to bring runs off; Said bearing outside and compound the becoming one of said bearing liner, compound mode has multiplely between the two, comprises complex methods such as interference fit, molding and forming, die press technology for forming; The tolerance grade of said axis hole can be controlled in 8～15 microns, so just can satisfy the requirement of micro motor to bearing accuracy; Manufacturing of the present invention is uncomplicated; Be easy to guarantee precision; Processing cost is low simultaneously; Through being positioned at the dimensional changes that outside said bearing outside restriction of being processed by metallic material is positioned at the inner said bearing liner of being processed by the selflubricating engineering plastics, when Production of bearing, can guarantee the machining accuracy of said axis hole; When bearing is assemblied on the motor; Can guarantee the structural strength of bearing, guarantee that especially said axis hole does not produce distortion, guarantee that the dimensional accuracy of said axis hole does not change; Through test; The present invention can guarantee the precision of bearing fully; Noise is low; Satisfied the requirement of design and use; The excessive swing wearing and tearing that bring of tolerance and the bearing premature failure and the lost of life have been avoided; Can be widely used in and require quiet, long-life radiator fan motor or use motor such as the H level cover level motor under hot environment and be applied in the places such as motor such as automobile fuel pump motor in the solvent environment, so precision of the present invention is high, quiet, the life-span is grown, cost is lower than ball bearing.
Description of drawings
Fig. 1 is the cross-sectional configuration schematic representation of the embodiment of the invention one self-lubrication alloy bearing;
Fig. 2 is the cross-sectional configuration schematic representation of the embodiment of the invention one bearing outside;
Fig. 3 is the cross-sectional configuration schematic representation of the embodiment of the invention two self-lubrication alloy bearings;
Fig. 4 is the cross-sectional configuration schematic representation of the embodiment of the invention two bearing outsides;
Fig. 5 is the cross-sectional configuration schematic representation of the embodiment of the invention three self-lubrication alloy bearings;
Fig. 6 is the cross-sectional configuration schematic representation of the embodiment of the invention three bearing outsides.
Embodiment
Embodiment one:
Like Fig. 1, shown in Figure 2; The self-lubrication alloy bearing of present embodiment comprises bearing liner 1, bearing outside 2; Said bearing liner 1 is provided with the cylinder of axis hole 3 for the axle center; The axle center of said bearing outside 2 is provided with through hole 4; The axle center of said bearing outside 2 is provided with through hole 4; The shape and the size of the outside of the shape of said through hole 4 and size and said bearing liner 1 are suitable; In the present embodiment; The profile of said through hole 4 and said bearing liner 1 all is cylindric; Certainly; The profile of said through hole 4 and said bearing liner 1 also can be oval column and be multiaspect column or other columns; Said bearing liner 1 adopts modified polyimide (PI) to make; Certainly the said bearing liner 1 of stating also can adopt modified polyetheretherketonefiber (PEEK) or modified polyacetal (POM) or modification of nylon 66(PA66) wait other self-lubricating engineering plastics to make; Material modification is generally the aforementioned body material by adding other reinforcing materials such as carbon fibre or glass; Add self-lubricating material such as polytetrafluoroethylene (PTFE) or graphite or molybdenum bisuphide etc. simultaneously or add lubricant modified forming; Said bearing outside 2 adopts powdered metallurgical material to make; Certain said bearing outside 2 also can adopt other metal materials such as copper or iron or bearing steel etc. to make; Said bearing outside 2 is cylindric; Said bearing outside 2 be positioned at said bearing liner 1 side wall perimeter and with said bearing liner 1 compound becoming one; Specifically; Said bearing liner 1 is pressed in the said through hole 4 by the interference tight fit; With compound the becoming one of said bearing outside 2 assemblings; Being combined into integrally-built bearing adopts the precision optical machinery processing technology that the dimensioned of said axis hole 3 is arrived needed margin of tolerance final molding again; The tolerance grade of said axis hole 3 can be controlled in 8～15 microns, so just can satisfy the requirement of micro machine to bearing accuracy.
Embodiment two:
Like Fig. 3, shown in Figure 4, present embodiment and embodiment's one difference part is: in the present embodiment, said bearing outside 2 is drum type.
All the other characteristics of present embodiment are with embodiment one.
Embodiment three:
Like Fig. 5, shown in Figure 6, present embodiment and embodiment's one difference part is: in the present embodiment, said bearing outside 2 is stepped.
All the other characteristics of present embodiment are with embodiment one.
Embodiment four:
Present embodiment and embodiment's one difference part is: the complex method between said bearing outside 2 and the said bearing liner 1; In the present embodiment; Said bearing liner 1 is through being injected and molded in the said through hole 4; With said bearing outside 2 compound becoming one; Be combined into integrally-built bearing and adopt the precision optical machinery processing technology that the dimensioned of said axis hole 3 is arrived needed tolerance range final molding again, the tolerance grade of said axis hole 3 can be controlled in 8～15 microns.
All the other characteristics of present embodiment are with embodiment one.
Embodiment five:
Present embodiment and embodiment's four difference part is: the complex method between said bearing outside 2 and the said bearing liner 1; In the present embodiment; Said bearing liner 1 is direct and said bearing outside 2 compound becoming one through die press technology for forming; Be combined into integrally-built bearing and adopt the precision optical machinery processing technology that the dimensioned of said axis hole 3 is arrived needed tolerance range final molding again, the tolerance grade of said axis hole 3 can be controlled in 8～15 microns.
All the other characteristics of present embodiment are with embodiment four.
Among the present invention; Said bearing outside 2 is through metal machining moulding or by powder metallurgy forming; Play the effect that keeps structural strength and structure shape; Said bearing liner 1 is processed by the selflubricating engineering plastics; It is main friction means; Its noise in operating is low, and material wear-resistant, high temperature resistant has long lifetime, quiet characteristics under hot environment.Manufacturing of the present invention is uncomplicated, is easy to guarantee precision, and processing cost is low simultaneously.Through being positioned at the dimensional changes that outside said bearing outside 2 restrictions of being processed by metallic material are positioned at the inner said bearing liner of being processed by the selflubricating engineering plastics 1; When producing; Can guarantee the machining accuracy of said axis hole 3; When assembling; Can guarantee that said axis hole 3 does not produce distortion, guarantee that precision does not change.Through test; The present invention can guarantee the precision of bearing fully; Noise is low; Long lifetime; Satisfied the requirement of design and use; The excessive swing wearing and tearing that bring of tolerance and the bearing premature failure and the lost of life have been avoided; Be the selflubricating oilless bearing that a kind of precision is high, quiet, the life-span is long, cost is low, can be widely used in and require quiet, long-life radiator fan motor or use motor such as the H level cover level motor under hot environment and be applied in the places such as motor such as automobile fuel pump motor in the solvent environment.In addition, designability of the present invention is strong, and said bearing outside 2 can be made into multiple shape, satisfies different usage requirements.
The present invention can be widely used in field of bearings.
Under the situation that does not break away from inventive concept, all application specification of the present invention and accompanying drawing content and the various equivalences of being done change, and all reason is with being contained in the claim scope of the present invention.
Claims (9)
1. self-lubrication alloy bearing; It is characterized in that: comprise bearing liner (1), bearing outside (2); Said bearing liner (1) is provided with the cylinder of axis hole (3) for the axle center; The axle center of said bearing outside (2) is provided with through hole (4); The shape and the size of the outside of the shape of said through hole (4) and size and said bearing liner (1) are suitable; Said bearing liner (1) adopts the self-lubricating engineering plastics to make; Said bearing outside (2) adopts metal material to make; Said bearing outside (2) be positioned at said bearing liner (1) side wall perimeter and with compound the becoming one of said bearing liner (1), said axis hole (3) is by precision optical machinery processing final molding.
2. self-lubrication alloy bearing according to claim 1 is characterized in that: said bearing liner (1) is pressed in the said through hole (4) through the interference drive fit, with compound the becoming one of said bearing outside (2) assembling.
3. self-lubrication alloy bearing according to claim 1 is characterized in that: said bearing liner (1) is through being injected and molded in the said through hole (4), with compound the becoming one of said bearing outside (2).
4. self-lubrication alloy bearing according to claim 1 is characterized in that: said bearing liner (1) is direct and compound the becoming one of said bearing outside (2) through die press technology for forming.
5. according to any described self-lubrication alloy bearing of claim 1 to 4, it is characterized in that: the tolerance grade of said axis hole (3) is in 8～15 microns.
6. according to any described self-lubrication alloy bearing of claim 1 to 4, it is characterized in that: said bearing outside (2) employing copper or iron or Bearing Steel or powdered metallurgical material are processed.
7. according to any described self-lubrication alloy bearing of claim 1 to 4, it is characterized in that: said bearing liner (1) employing modified polyimide or modified polyetheretherketonefiber or modified polyacetal or modification of nylon 66 are processed.
8. according to any described self-lubrication alloy bearing of claim 1 to 4, it is characterized in that: the profile of said through hole (4) and said bearing liner (1) all is cylindric or is oval column or is the multiaspect column.
9. according to any described self-lubrication alloy bearing of claim 1 to 4, it is characterized in that: said bearing outside (2) is cylindric or is drum type or stepped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101963262A CN102345679A (en) | 2011-08-19 | 2011-08-19 | Self-lubricating alloy bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101963262A CN102345679A (en) | 2011-08-19 | 2011-08-19 | Self-lubricating alloy bearing |
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| Publication Number | Publication Date |
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| CN102345679A true CN102345679A (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101963262A Pending CN102345679A (en) | 2011-08-19 | 2011-08-19 | Self-lubricating alloy bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007136A1 (en) * | 2011-07-13 | 2013-01-17 | Zhang Gongjian | Self-lubricating alloy bearing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348532A (en) * | 1999-03-03 | 2002-05-08 | 圣戈班特性塑料公司 | Roller with self-lubricated bearing |
| CN2551800Y (en) * | 2002-07-16 | 2003-05-21 | 朴日山 | Self-lubricating sliding bearing of metal and polymer plastic alloy composite |
| CN1912410A (en) * | 2006-07-31 | 2007-02-14 | 大连三环复合材料技术开发有限公司 | High temp resistance self-lubricating bearing and manufacturing method |
| CN1973023A (en) * | 2004-06-10 | 2007-05-30 | Ntn株式会社 | Sliding material and sliding bearing |
| CN101407633A (en) * | 2008-09-04 | 2009-04-15 | 上海第二工业大学 | Method for preparing slide bearing by using polyimide composite material |
| CN202165436U (en) * | 2011-07-13 | 2012-03-14 | 张攻坚 | Self-lubricating alloy bearing |
-
2011
- 2011-08-19 CN CN2011101963262A patent/CN102345679A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1348532A (en) * | 1999-03-03 | 2002-05-08 | 圣戈班特性塑料公司 | Roller with self-lubricated bearing |
| CN2551800Y (en) * | 2002-07-16 | 2003-05-21 | 朴日山 | Self-lubricating sliding bearing of metal and polymer plastic alloy composite |
| CN1973023A (en) * | 2004-06-10 | 2007-05-30 | Ntn株式会社 | Sliding material and sliding bearing |
| CN1912410A (en) * | 2006-07-31 | 2007-02-14 | 大连三环复合材料技术开发有限公司 | High temp resistance self-lubricating bearing and manufacturing method |
| CN101407633A (en) * | 2008-09-04 | 2009-04-15 | 上海第二工业大学 | Method for preparing slide bearing by using polyimide composite material |
| CN202165436U (en) * | 2011-07-13 | 2012-03-14 | 张攻坚 | Self-lubricating alloy bearing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013007136A1 (en) * | 2011-07-13 | 2013-01-17 | Zhang Gongjian | Self-lubricating alloy bearing |
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Application publication date: 20120208 |