CN103658215B - Integral outer ring's self-lubricating knuckle bearing many lobes mould radial compression building mortion and forming technology - Google Patents
Integral outer ring's self-lubricating knuckle bearing many lobes mould radial compression building mortion and forming technology Download PDFInfo
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- CN103658215B CN103658215B CN201310589836.5A CN201310589836A CN103658215B CN 103658215 B CN103658215 B CN 103658215B CN 201310589836 A CN201310589836 A CN 201310589836A CN 103658215 B CN103658215 B CN 103658215B
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Abstract
The present invention discloses a kind of integral outer ring self-lubricating knuckle bearing many lobes mould radial compression building mortion and forming technology.Described mould comprises fairlead (1), rectangular pyramid casement (2), lobe mould (3), packing ring (7) and die holder (8).In forming technology, bearing inner race (6), self-lubricating layer (5), bearing outer ring (4), lobe mould (3) are installed in installation shaft (8-4) successively; Under casement ramp effect, rectangular pyramid casement (2) relatively die holder (8) is done in the process of moving from top to bottom, lobe mould (3) inwardly moves, under the acting in conjunction of lobe mould cylindrical bore wall (3-2) and packing ring (7), bearing inner race (6) and self-lubricating layer (5) reach ball contact completely, finally carry out machined to bearing outer ring (4).Present invention achieves the effective control to bearing clearance, bearing outer ring axial deformation is symmetrical, and without radial jumping-up, oscillating bearing has the bearing clearance meeting bearing finished products requirement after being shaped.
Description
Technical field
The present invention relates to oscillating bearing and manufacture field, particularly relate to a kind of integral outer ring self-lubricating knuckle bearing many lobes mould radial compression building mortion and forming technology.
Background technology
Current China is in the accurate self-lubricating knuckle bearing product of aviation, and main dependence on import, especially at self-lubricating bearing technical research, the manufacture view of integral outer ring, exists technological gap.Self-lubricating knuckle bearing is made up of the inner ring of band spherical outside surface, the outer ring of band Internal Spherical Surface and the self-lubricating layer that sticks to inner surface.Be divided into by the version of outer ring: non-integral type and monoblock type.The self-lubricating knuckle bearing of non-integral type outer ring structure, its outer ring is seamed, and self-lubricating layer surface is also subdivision, and in use self-lubricating layer is uneven, such that gap is uneven, discontinuity, and bearing life and reliability are reduced; In addition, the complex structure of non-integral type self-lubricating knuckle bearing, matching requirements are high.And the self-lubricating knuckle bearing of integral type outer race structure, its outer ring and self-lubricating layer are all structure as a whole, outer ring and inner ring structure simple, have in using that self-lubricating reliability is high, the feature of compact conformation, but in the mill, must, by making the method for outer ring or inner ring Plastic Forming, make outer ring envelope on inner ring.The manufacturing process of disclosed self-lubricating knuckle bearing integral outer ring generally easily causes violent extruding to self-lubricating layer at present, also easily causes self-lubricating layer and inner ring outer surface to damage.And the self-lubricating layer sticking to outer ring Internal Spherical Surface is Key Function Structures, not damaged in manufacture process must be ensured and form the gap condition meeting finished product requirement.Chinese patent 201110362488.9, 201110361353.0 with 201110361372.3 propose three kinds of integral outer ring's self-lubricating knuckle bearing manufacturing process, and to self-lubricating layer not damaged, but this several method is mainly used in the manufacture of the slightly large self-lubricating knuckle bearing of size, consider that the manufacture method of the self-lubricating knuckle bearing of reduced size is poor, need a kind of new technology of research and development, require that new process is in the manufacture process of oscillating bearing, plastic force is smaller, self-lubricating layer is avoided to damage, the play of requirement can be met and the self-lubricating knuckle bearing of the reduced size that can be shaped.
Summary of the invention
The object of the present invention is to provide a kind of integral outer ring self-lubricating knuckle bearing many lobes mould radial compression building mortion and forming technology.This invention in the fabrication process between the self-lubricating layer that adheres to of bearing outer ring inner surface and bearing inner race outer surface without acutely extruding, forming process, to self-lubricating layer not damaged, has the bearing clearance that meets the requirement of finished product oscillating bearing and is mainly used in integral outer ring's self-lubricating knuckle bearing many lobes mould radial compression forming manufacturing method of the shaping of reduced size self-lubricating knuckle bearing after shaping.
The technical solution adopted for the present invention to solve the technical problems is: many lobes mould radial compression shaping dies of a kind of integral outer ring self-lubricating knuckle bearing, comprises fairlead, rectangular pyramid casement, lobe mould, packing ring and die holder.Described rectangular pyramid casement outer surface is cylinder, and inner surface is rectangular pyramid hole.Described fairlead outer surface is cylinder, and inner surface is square opening, and is screwed with the big opening end face of rectangular pyramid casement.Described die holder has four step surfaces, and First terrace is the circular stroke end face coordinated for block; Second step face is square; 3rd step surface is square, for supporting lobe mould and packing ring; 4th step surface is shaft shoulder locating surface, for spring bearing inner ring.Described lobe mould and rectangular pyramid casement contact surface are inclined-plane, be cylindrical bore wall with bearing outer ring contact surface, the equal diameters of this cylindrical bore wall diameter and shaping rear bearing outer ring, gap is had between lobe mould, connect with spring between each lobe mould, moving in the process of stopping surface with rectangular pyramid casement die holder relative to fairlead, adjacent lobe mould is mutually close gradually.
Angle beta=10 that formed between the casement inclined-plane of described rectangular pyramid casement and die holder axis ° ~ 30 °.Described lobe mould inclined-plane is equal with the angle formed between casement inclined-plane with die holder axis with the angle formed between die holder axis.
Utilize a technique for many lobes mould radial compression building mortion shaping self-lubricating knuckle bearing of described integral outer ring self-lubricating knuckle bearing, described technique comprises the steps:
A. adopt machined to obtain bearing outer ring blank, then bearing inner race is placed in the bearing outer ring adhering to self-lubricating layer and forms a whole bearing base.
B. integral bearing base, lobe mould are loaded on successively in the installation shaft of die holder, shaft shoulder locating surface spring bearing inner ring, packing ring is placed on die holder, and packing ring places bearing outer ring.
C. rectangular pyramid casement and fairlead screw are linked, connect between lobe mould with spring, bearing outer ring is compressed in the lobe mould cylindrical bore wall of lobe mould, and fairlead and rectangular pyramid casement are sleeved on lobe mould.
D. under the effect of external force vertically downward, the relative die holder motion of rectangular pyramid casement, the lobe mould inclined-plane of lobe mould and the also radial motion gradually of casement inclined-plane relative sliding, bearing outer ring is by the crimp gradually of lobe mould cylindrical bore wall, the guide section of fairlead moves along the spigot surface of die holder, until fairlead is blocked spacing by stroke end face, bearing outer ring reaches ball contact completely with bearing inner race and self-lubricating layer under the acting in conjunction of lobe mould cylindrical bore wall and packing ring, moving in the process in stroke end face with the relative die holder of rectangular pyramid casement, adjacent petals mould is close gradually.
E. last machined is carried out to the bearing outer ring after being shaped, and obtain the self-lubricating knuckle bearing finished product of uniform clearance.
Beneficial effect of the present invention is: this invention is due to the effect on casement inclined-plane, in the process that the relative die holder of rectangular pyramid casement from top to bottom moves, lobe mould can inwardly move, bearing outer ring can be subject to the gradual radial compression power of lobe mould cylinder hole wall long period, the external diameter of bearing outer ring slowly reduces, bearing outer ring also slowly carries out towards the distortion of bearing inner race, until after guide section touches stroke end face, the bearing inner race of oscillating bearing, self-lubricating layer can contact with bearing outer ring, and at shaft shoulder locating surface, under the acting in conjunction of the cylinder hole wall of packing ring and lobe mould, bearing inner race, good ball contact is reached between selflubricating liner and bearing outer ring.Finally machined is carried out to the bearing outer ring after shaping.The invention solves existing integral outer ring's self-lubricating knuckle bearing outer ring be shaped and assemble problem self-lubricating layer easily being caused to damage, without locking and violent squeezing action between bearing outer ring and bearing inner race, little on self-lubricating layer impact, damage can not be caused, and by the adjustment of blank and die size parameter, can realize the effective control to bearing clearance, bearing outer ring axial deformation is symmetrical, without radial jumping-up, oscillating bearing has the bearing clearance meeting bearing finished products requirement after being shaped.This invention can be widely used in the production of less self-lubricating knuckle bearing.
Accompanying drawing explanation
Tu1Shi integral outer ring self-lubricating knuckle bearing many lobes mould radial compression building mortion and forming technology schematic diagram;
Fig. 2 is the structural representation of bearing blank;
Fig. 3 is the A-A sectional view of forming technology;
Fig. 4 is forming technology B-B sectional view.
In above-mentioned accompanying drawing, 1. fairlead, 1-1. guide section, 2. rectangular pyramid casement, 2-1. casement inclined-plane, 3. lobe mould, 3-1. lobe mould inclined-plane, 3-2. lobe mould cylindrical bore wall, 4. bearing outer ring, 5. self-lubricating layer, 6. bearing inner race, 7. packing ring, 8. die holder, 8-1. spigot surface, 8-2. shaft shoulder locating surface, 8-3. stroke end face, 8-4. installation shaft, 8-5. second step face, 8-6. the 3rd step surface, 9. screw, 10. spring.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, technical solution of the present invention is described in further detail.
Embodiment
Fig. 1 is an embodiment disclosed by the invention.Integral outer ring's self-lubricating knuckle bearing many lobes mould radial compression building mortion, comprises fairlead 1, rectangular pyramid casement 2, lobe mould 3, packing ring 7 and die holder 8.Rectangular pyramid casement 2 outer surface is the face of cylinder, and inner surface is rectangular pyramid face, angle beta=15 ° formed between the casement inclined-plane 2-1 of described rectangular pyramid casement 2 and die holder 8 axis.Described fairlead 1 outer surface is cylinder, and inner surface is square opening, connects firmly between the big opening end face of fairlead 1 and rectangular pyramid casement 2 with screw 9.Described die holder 8 has four step surfaces, and First terrace 8-3 is the circular stroke end face coordinated for block; Second step face 8-5 is square; 3rd step surface 8-6 is square, for supporting lobe mould and packing ring; 4th step surface 8-2 is shaft shoulder locating surface, for spring bearing inner ring 6.Described lobe mould 3 is inclined-plane with the contact surface of rectangular pyramid casement 2, is cylindrical bore wall with bearing outer ring 4 contact surface, the diameter of this cylindrical bore wall and the equal diameters of shaping rear bearing outer ring 4.Have gap between lobe mould 3, adopt spring 10 to connect between adjacent petals mould 3, the angle of lobe mould inclined-plane 3-1 is equal with the angle of die holder 8 axis with rectangular pyramid casement 2 rectangular pyramid face.
In embodiments of the present invention, use many lobes mould radial compression building mortion shaping self-lubricating knuckle bearing technique of integral outer ring's self-lubricating knuckle bearing, its concrete steps are as follows:
The external diameter of shaping fore bearing outer ring 4 is 25mm, and the external diameter of shaping rear bearing outer ring 4 is 22mm, and bearing inner race 6 internal diameter is 12mm, and spring 10 is of a size of 0.4 × 3.2 × 16.
A. bearing outer ring 4 is overall ring, adopts machined to obtain bearing outer ring 4 blank, bearing outer ring 4 inner surface adheres to self-lubricating layer 5, bearing inner race 6 is placed in the bearing outer ring 4 adhering to self-lubricating layer 5 and forms an integral bearing base.
B. connected with spring by each valve 3, afterwards valve 3, integral bearing base are loaded on the installation shaft 8-4 of die holder 8, shaft shoulder locating surface 8-2 spring bearing inner ring 6, the packing ring 7 be placed on die holder 8 places bearing outer ring 4 above.
C. rectangular pyramid casement 2 and fairlead 1 screw 9 are linked, bearing outer ring 4 is compressed in the lobe mould cylindrical bore wall 3-2 of lobe mould 3, and fairlead 1 and rectangular pyramid casement 2 are sleeved on lobe mould 3.
D. active force is vertically downward applied, rectangular pyramid casement 2 relatively die holder 8 moves, the lobe mould inclined-plane 3-1 of lobe mould 3 and the also radial motion gradually of casement inclined-plane 2-1 relative sliding, bearing outer ring 4 is by lobe mould cylindrical bore wall 3-2 crimp gradually, the guide section 1-1 of fairlead 1 moves along the spigot surface 8-1 of die holder 8, until fairlead 1 is blocked spacing by stroke end face 8-3, bearing outer ring 4 reaches ball contact completely with bearing inner race 6 and self-lubricating layer 5 under the acting in conjunction of lobe mould cylindrical bore wall 3-2 and packing ring 7, moving in the process of stroke end face 8-3 with the relative die holder 8 of rectangular pyramid casement 2, adjacent petals mould 3 is close gradually.
E. take off the self-lubricating knuckle bearing after shaping, Φ 22mm is machined to the external diameter of bearing outer ring 4, finally obtain the self-lubricating knuckle bearing finished product of uniform clearance.
Claims (5)
1. many lobes mould radial compression building mortion of integral outer ring's self-lubricating knuckle bearing, described device comprises fairlead (1), rectangular pyramid casement (2), lobe mould (3), packing ring (7) and die holder (8), it is characterized in that: described rectangular pyramid casement (2) outer surface is cylinder, and inner surface is rectangular pyramid hole; Described fairlead (1) outer surface is cylinder, and inner surface is square opening, and fixes with screw (9) with the big opening end face of rectangular pyramid casement (2); Described die holder (8) has four step surfaces, and First terrace (8-3) is the circular stroke end face (8-3) coordinated for block; Second step face (8-5) is square; 3rd step surface (8-6) is square, for supporting lobe mould (3) and packing ring (7); 4th step surface (8-2) is shaft shoulder locating surface, for spring bearing inner ring (6); Described lobe mould (3) and rectangular pyramid casement (2) contact surface are inclined-plane, and be cylindrical bore wall with bearing outer ring (4) contact surface, the diameter of this cylindrical bore wall and the equal diameters of shaping rear bearing outer ring (4), lobe mould has gap between (3).
2. many lobes mould radial compression building mortion of integral outer ring according to claim 1 self-lubricating knuckle bearing, is characterized in that: angle beta=10 that formed between the casement inclined-plane (2-1) of described rectangular pyramid casement (2) and die holder (8) axis ° ~ 30 °.
3. many lobes mould radial compression building mortion of integral outer ring according to claim 1 and 2 self-lubricating knuckle bearing, is characterized in that: the angle formed between lobe mould inclined-plane (3-1) with die holder (8) axis is equal with the angle formed between casement inclined-plane (2-1) with die holder (8) axis.
4. many lobes mould radial compression building mortion of integral outer ring according to claim 1 self-lubricating knuckle bearing, is characterized in that: connect with spring (10) between described lobe mould (3).
5. utilize a technique for many lobes mould radial compression building mortion shaping self-lubricating knuckle bearing of integral outer ring as claimed in claim 1 self-lubricating knuckle bearing, it is characterized in that: described technique comprises the steps:
A. adopt machined to obtain bearing outer ring (4) blank, then bearing inner race (6) is placed in the bearing outer ring (4) adhering to self-lubricating layer (5) and forms an integral bearing base;
B. packing ring (7) is placed on die holder (8), integral bearing base, lobe mould (3) are loaded in the installation shaft (8-4) of die holder (8) successively, shaft shoulder locating surface (8-2) spring bearing inner ring (6), packing ring (7) is placed bearing outer ring (4);
C. rectangular pyramid casement (2) is connected with fairlead (1) screw (9), connect with spring (10) between lobe mould (3), bearing outer ring (4) is compressed in the lobe mould cylindrical bore wall (3-2) of lobe mould (3), and fairlead (1) and rectangular pyramid casement (2) are sleeved on lobe mould (3);
D. under the effect of external force vertically downward, rectangular pyramid casement (2) die holder (8) motion relatively, lobe mould inclined-plane (3-1) and the also radial motion gradually of casement inclined-plane (2-1) relative sliding of lobe mould (3), bearing outer ring (4) is by lobe mould cylindrical bore wall (3-2) crimp gradually, the guide section (1-1) of fairlead (1) moves along the spigot surface (8-1) of die holder (8), until fairlead (1) is blocked spacing by stroke end face (8-3), bearing outer ring (4) reaches ball contact completely with bearing inner race (6) and self-lubricating layer (5) under the acting in conjunction of lobe mould cylindrical bore wall (3-2) and packing ring (7), moving in the process of stroke end face (8-3) with the relative die holder (8) of rectangular pyramid casement (2), adjacent petals mould (3) is close gradually,
E. take off the self-lubricating knuckle bearing after shaping, machined is carried out to bearing outer ring (4), finally obtain the self-lubricating knuckle bearing finished product of uniform clearance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310589836.5A CN103658215B (en) | 2013-11-22 | 2013-11-22 | Integral outer ring's self-lubricating knuckle bearing many lobes mould radial compression building mortion and forming technology |
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| CN201310589836.5A CN103658215B (en) | 2013-11-22 | 2013-11-22 | Integral outer ring's self-lubricating knuckle bearing many lobes mould radial compression building mortion and forming technology |
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| CN103658215A CN103658215A (en) | 2014-03-26 |
| CN103658215B true CN103658215B (en) | 2016-01-27 |
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| CN104154113B (en) * | 2014-06-19 | 2016-09-07 | 福建龙溪轴承(集团)股份有限公司 | A kind of method using release shrink film to carry out self-lubricating knuckle bearing solidification |
| CN106838027B (en) * | 2017-03-31 | 2022-07-05 | 福建龙溪轴承(集团)股份有限公司 | Curing device and method for accurately controlling no-load starting torque of bearing |
| 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 |
| CN110560587B (en) * | 2019-10-12 | 2021-02-09 | 沙文曼(无锡)智能装备有限公司 | Pipe end forming machine |
| CN112355564A (en) * | 2020-11-12 | 2021-02-12 | 燕山大学 | Extrusion reducing type device and method for repairing hole diameter of rod end joint bearing rod head seat |
| CN114643467A (en) * | 2022-03-09 | 2022-06-21 | 西安建筑科技大学 | Seamless self-lubricating bearing forging and pressing manufacturing method |
| CN115143194B (en) * | 2022-07-12 | 2024-01-12 | 山东利腾轴承制造有限公司 | Self-lubricating knuckle bearing adjusting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US2462138A (en) * | 1945-11-28 | 1949-02-22 | Halfco Inc | Method of making self-aligning ball bearings |
| US3193910A (en) * | 1962-10-01 | 1965-07-13 | Southwest Products Co | Method of making bearings |
| JP3002300B2 (en) * | 1991-07-12 | 2000-01-24 | 日本トムソン株式会社 | Spherical plain bearing and manufacturing method thereof |
| CN102501023B (en) * | 2011-11-15 | 2013-07-03 | 燕山大学 | Compression molding method without action of inner rings for integral self-lubricating joint bearings |
| CN102489642B (en) * | 2011-11-16 | 2014-01-22 | 燕山大学 | Integral self-lubricated oscillating bearing rolling forming process and rolling equipment |
| CN103182399A (en) * | 2013-02-27 | 2013-07-03 | 燕山大学 | Whole outer-ring hole-pattern extrusion molding method for self-lubricating spherical plain bearing |
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