CN102501023B - Compression molding method without action of inner rings for integral self-lubricating joint bearings - Google Patents
Compression molding method without action of inner rings for integral self-lubricating joint bearings Download PDFInfo
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- CN102501023B CN102501023B CN 201110361353 CN201110361353A CN102501023B CN 102501023 B CN102501023 B CN 102501023B CN 201110361353 CN201110361353 CN 201110361353 CN 201110361353 A CN201110361353 A CN 201110361353A CN 102501023 B CN102501023 B CN 102501023B
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Abstract
The invention relates to a compression molding method without action of inner rings for integral self-lubricating joint bearings. The compression molding method is characterized in that a self-lubricating layer is adhered on the inner surface of an outer ring blank, a bearing inner ring is placed in the outer ring blank adhered with the self-lubricating layer, a combination of the bearing inner ring and the outer ring blank is sleeved on a central spindle in a cavity of a lower mold, both a cavity of an upper mold and the cavity of the lower mode consist of conical surfaces and cylindrical holes, a chamfer matching with the conical surfaces of the cavities is arranged on a width end surface of the outer ring blank, a compression molding process is precisely controlled according to a pressing time-displacement curve, when the upper mold reaches a target position and an inner spherical surface is formed on the inner surface of the outer ring blank, compression molding is stopped, molds are opened, and a self-lubricating joint bearing meeting the requirement on the backlash is obtained. The compression molding method solves the problem that a self-lubricating layer of an integral self-lubricating joint bearing is damaged by existing forming process, a forming process of the inner surface of an outer ring of the bearing and the backlash of the bearing are controllable, and the bearing manufactured by the aid of the process has the advantages of long service life and high reliability.
Description
Technical field
The present invention relates to bearing and make field, particularly a kind of die forming method of oscillating bearing.
Background technology
At present, known self-lubricating knuckle bearing is made up of the inner ring of a band spherical outside surface, outer ring and the self-lubricating layer of a band Internal Spherical Surface.Version by the outer ring is divided into: single seam formula, double slit formula, two half formula and monoblock type are the key function structures of bearing at the self-lubricating layer of outer ring Internal Spherical Surface, and not damaged is arranged in the manufacturing, and its performance is played decisive role.Though the manufacturing of single seam formula self-lubricating knuckle bearing inner surface is simple, inner ring directly can be pressed in the outer ring of cracking during assembling, but very easily cause the damage of inner surface self-lubricating layer and inner ring outer surface, in addition, in the use, because of the unbalance stress that cracks and cause, bearing life and reliability are reduced; Double slit formula self-lubricating knuckle bearing, though in making to the lubricating layer not damaged, outer ring and self-lubricating layer surface are subdivisions, in use, the structure of non-integral makes inhomogeneous, the discontinuity in gap, reliability is lower, the assembly structure relative complex; Two half formula self-lubricating knuckle bearings are connected two semi outer rings by some bolts, complex structure, matching requirements height, two semi outer rings and self-lubricating layer also are the structures of non-integral, inhomogeneous, the discontinuity in gap, and, this structure is not suitable for small-sized self-lubricating knuckle bearing, and reliability is low.
The outer ring of monoblock type self-lubricating knuckle bearing and self-lubricating layer are monolithic construction, outer ring and inner ring are simple in structure, the gap condition meets the requirement of finished product bearing, reliability height in the use, existing manufacturing technology, the outer ring is to be formed on the inner ring with the forging method envelope, when the outer ring is shaped, at first inner ring is enclosed within on the mandrel, again the outer ring blank is enclosed within outside the inner ring, suppress the outer ring then, make on the spherical outside surface of inner surface locking inner ring, machined outer ring then, by [" bearing " magazine the 6th phase 12-16 page or leaf in 1973 that bearing research institute in Luoyang publishes of the magnitude of interference between control mandrel and inner ring, exercise question is " manufacturing process of not having assembling breach oscillating bearing ", author: bearing research institute (being Luoyang bearing research institute)], make and produce the gap between self-lubricating layer and inner ring outer surface, it is the self-lubricating knuckle bearing play, in monoblock type self-lubricating knuckle bearing manufacture process, for the Internal Spherical Surface that forms the outer ring with meet the bearing clearance that the finished product bearing requires, self-lubricating layer stands twice violent extruding heterogeneous and distortion, very easily cause the conquassation damage, the finished product rate is not high, the self-lubricating layer reliability is not high, therefore, in the monoblock type self-lubricating knuckle bearing was made, the exploitation of no inner ring effect forming technique was necessary.
Summary of the invention
The objective of the invention is in order to solve the above-mentioned technical problem of existing in prior technology, at the monoblock type self-lubricating knuckle bearing, provide a kind of in manufacture process between outer ring blank inner surface and inner ring spherical outside surface the monoblock type self-lubricating knuckle bearing of no pressure effect do not have inner ring effect die forming method.
Purpose of the present invention can realize by following technical proposals:
A kind of bearing inner race that comprises, bearing outer ring and the monoblock type self-lubricating knuckle bearing that sticks to the self-lubricating layer of bearing outer ring inner surface, it is characterized in that: on request, the outer ring blank is carried out the processing of car mill, self-lubricating layer is affixed on outer ring blank inner surface, bearing inner race is placed the outer ring blank that is stained with self-lubricating layer, and this integral body is enclosed within on the mandrel in the bed die die cavity, the die cavity of mold and bed die is made up of the equal conical surface and cylindrical hole, mold die cavity cone angle and bed die die cavity cone angle are between 20 ° ~ 70 °, outer ring blank width end face has the chamfered edge that matches with the die cavity conical surface, and chamfered edge is of a size of
According to press time-displacement curve, accurately the control mold process treats that mold arrives the target location, when outer ring blank inner surface becomes Internal Spherical Surface, stop mold pressing, mould opens, and obtains to meet the self-lubricating knuckle bearing of play requirement, and is last, by to its end face and the processing of outer surface car mill, obtain the self-lubricating knuckle bearing finished product.
In the described manufacturing process, the shaping and the assembling that are stained with the solid box inner surface of self-lubricating layer are carried out simultaneously, and in bearing outer ring shaping and assembling process, the bearing inner race spherical outside surface are not produced the locking squeezing action.
The present invention compared with prior art has the following advantages: the invention solves the problem that existing monoblock type self-lubricating knuckle bearing outer ring is shaped and assembling influences self-lubricating layer, in manufacture process, no locking and squeezing action between bearing outer ring and bearing inner race, can not cause damage to self-lubricating layer, can form the play that meets the requirement of finished product bearing, the bearing of manufacturing has long service life, high reliability features, simultaneously, in process of production, this manufacture method is largely increased the bearing completed products rate.
Description of drawings
Fig. 1 is mould pressing process schematic diagram of the present invention.
Fig. 2 is bearing outer ring change of shape schematic diagram of the present invention;
Fig. 3 is press time-displacement curve.
The specific embodiment
Shown in accompanying drawing 1,2,3, the outer ring blank 2 of monoblock type self-lubricating knuckle bearing is the annular cylinder, by the requirement of different product to the outer ring blank, by Vehicle Processing, produce the outer ring blank, outer ring blank inner surface is carried out grinding process, and the outer ring blank inner surface after polishing adheres to self-lubricating layer 3.Place the outer ring blank that is stained with self-lubricating layer to form the bearing base of an integral body bearing inner race 4; The die cavity of mold 1 and bed die 7 is the conical surface, have cylindrical hole in the middle of the mould, mold die cavity cone angle 9 and bed die die cavity cone angle 10 are between 20 ° ~ 70 °, the integral bearing base is enclosed within on the mandrel 5 in the bed die die cavity, outer ring blank width end face has the chamfered edge that matches with the die cavity conical surface, and chamfered edge is of a size of
, there is below the mandrel spring 6 to support, this spring can make above-mentioned bearing inner race have certain amount of moving down with the outer ring blank in pressing process.Mold is fixed on the movable chopping block bottom of press, and bed die is fixed under the press on the chopping block.By formulating time-displacement curve, control the speed that presses down and the drafts of mold, and time-displacement curve is adjustable.When mold arrives the target location, bearing outer ring blank inner surface just in time becomes an Internal Spherical Surface, at this moment, outer ring blank inner surface and bearing inner race outer surface do not have the locking squeezing action, and the play requirement of monoblock type self-lubricating knuckle bearing is satisfied in the gap between outer ring blank inner surface and the bearing inner race outer surface, stop mold pressing, mould opens, take out the bearing after suppressing, at last, by bearing outer ring width and external diameter requirement, the bearing after the compacting is carried out the processing of car mill, the final acquisition meets the play requirement and satisfies the self-lubricating knuckle bearing that appearance and size requires
Claims (6)
1. a monoblock type self-lubricating knuckle bearing does not have inner ring effect die forming method, it is characterized in that: self-lubricating layer is affixed on outer ring blank inner surface, bearing inner race is placed the outer ring blank that is stained with self-lubricating layer, and this integral body is enclosed within on the mandrel in the bed die die cavity, the die cavity of mold and bed die is formed by the conical surface and cylindrical hole, outer ring blank width end face has the chamfered edge that matches with the die cavity conical surface, and chamfered edge is of a size of
According to press time-displacement curve, accurately the control mold process treats that mold arrives the target location, when outer ring blank inner surface becomes Internal Spherical Surface, stop mold pressing, mould opens, and obtains to meet the self-lubricating knuckle bearing of play requirement, and is last, by to its end face and the processing of outer surface car mill, obtain the self-lubricating knuckle bearing finished product.
2. monoblock type self-lubricating knuckle bearing according to claim 1 does not have inner ring effect die forming method, it is characterized in that: the shaping and the assembling that are stained with the solid box inner surface of self-lubricating layer are carried out simultaneously, and in bearing outer ring shaping and assembling process, the bearing inner race spherical outside surface is not produced the locking squeezing action.
3. monoblock type self-lubricating knuckle bearing according to claim 1 does not have inner ring effect die forming method, it is characterized in that: the outer ring blank is the annular cylinder.
4. monoblock type self-lubricating knuckle bearing according to claim 1 does not have inner ring effect die forming method, it is characterized in that: mold die cavity cone angle and bed die die cavity cone angle are all between 20 ° ~ 70 °.
5. monoblock type self-lubricating knuckle bearing according to claim 1 does not have inner ring effect die forming method, it is characterized in that: mold is fixed on the movable chopping block bottom of press, and bed die is fixed under the press on the chopping block.
6. monoblock type self-lubricating knuckle bearing according to claim 1 does not have inner ring effect die forming method, it is characterized in that: the time-displacement curve that mold is depressed is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110361353 CN102501023B (en) | 2011-11-15 | 2011-11-15 | Compression molding method without action of inner rings for integral self-lubricating joint bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110361353 CN102501023B (en) | 2011-11-15 | 2011-11-15 | Compression molding method without action of inner rings for integral self-lubricating joint bearings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102501023A CN102501023A (en) | 2012-06-20 |
| CN102501023B true CN102501023B (en) | 2013-07-03 |
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| CN 201110361353 Expired - Fee Related CN102501023B (en) | 2011-11-15 | 2011-11-15 | Compression molding method without action of inner rings for integral self-lubricating joint bearings |
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Families Citing this family (15)
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|---|---|---|---|---|
| CN103062225B (en) * | 2013-01-17 | 2015-04-08 | 燕山大学 | Rolling formation method of integral outer ring self-lubricating joint bearing |
| CN103357810B (en) * | 2013-06-21 | 2015-06-10 | 燕山大学 | Extrusion forming manufacturing method for inner race of integral type titanium alloy self-lubricating spherical plain bearing |
| CN103658215B (en) * | 2013-11-22 | 2016-01-27 | 燕山大学 | Integral outer ring's self-lubricating knuckle bearing many lobes mould radial compression building mortion and forming technology |
| CN104564944B (en) * | 2014-12-23 | 2016-08-24 | 燕山大学 | A kind of self-lubricating oscillating bearing liner adhering device |
| CN105499298A (en) * | 2016-02-18 | 2016-04-20 | 航天精工股份有限公司 | Self-lubricating knuckle bearing extrusion forming mold and technology |
| CN106271438A (en) * | 2016-08-30 | 2017-01-04 | 上海交通大学 | The manufacturing process of integral outer ring's formula self-lubricating knuckle bearing |
| CN109262232A (en) * | 2018-11-23 | 2019-01-25 | 大连交通大学 | Monoblock type oscillating bearing extrusion forming device and method |
| CN109798304B (en) * | 2019-01-08 | 2021-03-23 | 上海市轴承技术研究所 | Integral self-lubricating joint bearing equipment and folding forming method thereof |
| CN110131307B (en) * | 2019-05-16 | 2020-10-16 | 福建龙溪轴承(集团)股份有限公司 | Method for manufacturing molding type self-lubricating spherical plain bearing |
| CN110732598A (en) * | 2019-11-29 | 2020-01-31 | 江苏希西维轴承有限公司 | extrusion joint bearing compression molding device and method |
| CN110939661B (en) * | 2019-12-04 | 2021-11-19 | 航天精工股份有限公司 | Self-lubricating joint bearing no-load starting torque control method and extrusion device thereof |
| CN111022511B (en) * | 2019-12-04 | 2021-04-16 | 航天精工股份有限公司 | Single slit steel is to outer lane cover device in steel radial spherical plain bearing |
| CN111059157B (en) * | 2019-12-13 | 2022-07-05 | 泉州市德源轴承实业有限公司 | Manufacturing method of external spherical bearing with seat |
| CN112222261A (en) * | 2020-09-25 | 2021-01-15 | 中国航发哈尔滨轴承有限公司 | Machining method for joint bearing notch |
| CN114406615B (en) * | 2022-01-24 | 2023-03-31 | 中国科学院兰州化学物理研究所 | Manufacturing method for filling cavity with lubricating material of integral self-lubricating joint bearing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100803055B1 (en) * | 2006-11-03 | 2008-02-18 | 한국과학기술원 | Spherical bearing assembly and method for manufacturing the same |
| CN201116568Y (en) * | 2007-10-24 | 2008-09-17 | 福建龙溪轴承(集团)股份有限公司 | Self-lubricating centripetal oscillating bearing |
| CN100564914C (en) * | 2008-06-04 | 2009-12-02 | 沈阳飞机工业（集团）有限公司 | Articulated bearing automatic assembling machine |
| CN101660571B (en) * | 2009-04-20 | 2011-02-09 | 福建龙溪轴承(集团)股份有限公司 | Self-lubricating plain radial bearing and manufacturing method thereof |
| CN101983834B (en) * | 2010-11-24 | 2012-04-18 | 西安飞机工业（集团）有限责任公司 | Disassembling and assembling tool and method of oscillating bearing |
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