CN104874979A - Ball-spinning device and method of integrated outer ring typed self-lubricating spherical plain bearing - Google Patents
Ball-spinning device and method of integrated outer ring typed self-lubricating spherical plain bearing Download PDFInfo
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- CN104874979A CN104874979A CN201510203029.4A CN201510203029A CN104874979A CN 104874979 A CN104874979 A CN 104874979A CN 201510203029 A CN201510203029 A CN 201510203029A CN 104874979 A CN104874979 A CN 104874979A
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- outer ring
- bearing
- ball
- ring
- expansion sleeve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention relates to a ball-spinning device and a method of integrated outer ring typed self-lubricating spherical plain bearing. An upper die holder of the device is provided internally with inner conical rings, retainers are fixed to the inner conical rings to constrain large, medium and small groups of balls in the corresponding raceways, a mandrel is mounted in a center counter bore of a baseplate, and the baseplate is connected with a lower die through bolts. The method includes processing the inner surface of the outer ring blank of the spherical plain bearing into a process optimized shape, and attaching a self-lubricating layer thereto; allowing the inner surface of the forming side of the outer ring blank to fit on the inner ring of the bearing in a shape follow-up mold by the aid of the forming device; and performing turning and grinding to the end face and the outer surface of the outer ring of the bearing to obtain the integrated outer ring typed self-lubricating spherical plain bearing. During the forming process, the inner ring of the bearing is flexibly contacted with the outer ring of the bearing, thus no damage to the self-lubricating layer occurs, ball flow forming transformation is uniform, forming force is small, and ease in controlling can be achieved.
Description
Technical field
The invention belongs to a kind of oscillating bearing processing and manufacturing field, particularly the ball spinning building mortion of a kind of integral outer ring formula self-lubricating knuckle bearing and manufacturing process.
Background technology
Self-lubricating knuckle bearing is made up of the inner ring of a band spherical outside surface, the outer ring of a band Internal Spherical Surface and self-lubricating layer.Be divided into by the version of outer ring: non-integral type and monoblock type.At the key part that the self-lubricating layer of outer ring Internal Spherical Surface is oscillating bearing, in manufacture process, not damaged and formation meet the gap condition of finished product oscillating bearing requirement, play decisive role to its performance.Outer ring and self-lubricating layer surface are the non-integral outer ring type self-lubricating knuckle bearings of one, easily cause inner surface self-lubricating layer and inner ring outer surface to damage when assembling; And outer ring and self-lubricating layer surface are the non-integral outer ring type self-lubricating knuckle bearings of subdivision, in use the structure of its non-integral makes gap, discontinuity, easily produces stress concentration phenomenon, bearing life and reliability are reduced.In addition, the complex structure of non-integral outer ring type self-lubricating knuckle bearing, matching requirements are high.
Outer ring and the self-lubricating layer of integral outer ring's formula self-lubricating knuckle bearing are structure as a whole, and simply, gap condition meets the requirement of finished product oscillating bearing, uses middle reliability high for outer ring and inner ring structure.But existing manufacturing technology is first adopted outer ring forging method envelope to be formed on inner ring, then roll out play by the mode of rolling.For forming outer ring Internal Spherical Surface and the bearing clearance meeting the requirement of finished product oscillating bearing, self-lubricating layer stands twice violent extruding heterogeneous and distortion, very easily causes conquassation to damage, finished product rate is not high, self-lubricating layer reliability is not high.Therefore, integral outer ring's formula self-lubricating knuckle bearing ball spinning building mortion that research and development are new and method very necessary.
Summary of the invention
Very easily causing the not high and not high deficiency of self-lubricating layer reliability of conquassation damage, finished product rate to improve existing oscillating bearing production technology, the invention provides ball spinning building mortion and the manufacturing process of a kind of integral outer ring formula self-lubricating knuckle bearing.This invention in the fabrication process between inner surface self-lubricating layer and inner ring outer surface without acutely extruding, to self-lubricating layer not damaged, uniform force, the life-span of oscillating bearing and reliability all have obvious lifting.
The technical solution adopted for the present invention to solve the technical problems is: the ball spinning building mortion of a kind of integral outer ring formula self-lubricating knuckle bearing, it is characterized in that: inner conical surface ring has the three groups of roller-ways matched with large, medium and small three groups of balls respectively, retainer is fixed on inner conical surface ring and constrains on the roller-way of its correspondence by described large, medium and small three groups of balls, and inner conical surface ring is fixed on upper bolster by locking nut.The center counterbore of base plate is built with mandrel, base plate is connected with counterdie by bolt, described counterdie is a dish with stepped cylindrical hole, wherein, expansion sleeve outer shroud, expansion sleeve inner ring are housed in stepped cylindrical hole, top I successively, middle part cylindrical hole II matches with the shoulder of mandrel, installs disc spring in lower cylindrical hole III.
The outer surface of described expansion sleeve inner ring is conical external surface inner surface is the face of cylinder, the inner surface of described expansion sleeve outer shroud is conical inner surface outer surface is the face of cylinder, the conical inner surface of described expansion sleeve outer shroud is identical with the tapering of the conical external surface of expansion sleeve inner ring, and expansion sleeve outer shroud and expansion sleeve inner ring process minute opening at circumferencial direction.
The upper surface of described expansion sleeve outer shroud processes uniform axial tommyhead bolt hole, and the screw hole that on described counterdie, processing is corresponding with the tommyhead bolt hole of expansion sleeve outer shroud upper surface, gap is radially left in the tommyhead bolt hole of expansion sleeve outer shroud upper surface.
Described large, medium and small three groups of balls respectively circumference are distributed in three groups of roller-ways of described inner conical surface ring, from bottom to top by order arrangement from big to small, large, medium and small three groups of balls can either roll in the respective roller-way of inner conical surface ring, can revolve round the sun around mold axis under the drive of upper bolster again, simultaneously can also with upper bolster to lower feeding.
The section line in configured ends spinning face is straightway, and described straightway is parallel to the common tangent of large, medium and small ball, and is 20 ° ~ 45 ° with the angle of oscillating bearing axis.
Use a manufacturing process for the ball spinning building mortion of described integral outer ring's formula self-lubricating knuckle bearing, said method comprising the steps of:
Step 1: processing outer ring blank, outer ring blank is overall ring, and inner surface is shape of dehiscing, outer surface is made up of positioning end and configured ends, the outer surface of positioning end is the face of cylinder, and configured ends outer surface section line is curve, and its maximum outside diameter is 1.1 ~ 1.3 times of finished product oscillating bearing external diameter; Processed finished products oscillating bearing inner ring, the outer ring blank inner surface through step processing adheres to self-lubricating layer, then is placed in by bearing inner race and is stained with in the outer ring blank of self-lubricating layer;
Step 2: the mandrel that described bearing inner race is enclosed within described ball spinning building mortion positions, the positioning end of described outer ring blank passes through screw, and be with the expansion sleeve inner ring of opening and expansion sleeve outer shroud to be fixed in the counterbore of counterdie, counterdie is fixed by screws on base plate;
Step 3: upper bolster rotates under the driving of machine spindle, determine that the section line in configured ends spinning face and the angle of oscillating bearing axis are 20 ° ~ 45 °, upper bolster according to given technological parameter to lower feeding, large ball, middle ball, the successively roll extrusion of little ball three groups of balls are on the spinning face of outer ring blank configured ends, along with the feeding of upper bolster, carry out spinning to the configured ends of outer ring blank, the inner surface of outer ring blank is plastic deformation to sphere gradually;
Step 4: when upper bolster arrives the target location of setting, ball spinning has been shaped; Oscillating bearing after ball spinning is shaped, now, outer ring blank inner surface and bearing inner race outer surface are without locking and extrude phenomenon, the play requirement of the gap character composite oscillating bearing between them.
Step 5: last, carries out turning, grinding to the end face of bearing outer ring and outer surface, thus obtains integral outer ring's formula self-lubricating knuckle bearing finished product.
The present invention compared with prior art has the following advantages: solve the shaping of existing integral outer ring's formula self-lubricating knuckle bearing outer ring and assemble and damage self-lubricating layer, in oscillating bearing ball spinning forming process, without locking and extruding phenomenon between bearing outer ring and bearing inner race, little on self-lubricating layer impact, do not cause damage, and can realize controling effectively to bearing clearance by the adjustment of ball spinning technological parameter, oscillating bearing has the bearing clearance meeting bearing finished products requirement after being shaped.Meanwhile, ball spinning becomes that deformation is even, plastic force is little, is easy to control, the bearing outer ring inner surface configuration that ball spinning is shaped and bearing inner race external surface shape uniformity good, uniform force, bearing life and reliability all have obvious lifting.
Accompanying drawing explanation
The structural representation of the ball spinning building mortion of Tu1Shi integral outer ring formula self-lubricating knuckle bearing;
Fig. 2 is the structural representation of counterdie of the present invention;
Fig. 3 is the structural representation of inner conical surface ring of the present invention, ball and retainer;
Fig. 4 is the structural representation of oscillating bearing before ball spinning is shaped of manufacturing process of the present invention;
Fig. 5 is the structural representation of oscillating bearing after ball spinning is shaped of manufacturing process of the present invention;
Fig. 6 is the structural representation of oscillating bearing finished product of the present invention.
In above-mentioned accompanying drawing, 1. upper bolster, 2. inner conical surface ring, 3. locking nut, 4. ball in, 5. bearing outer ring blank, 6. self-lubricating layer, 7. bearing inner race, 8. screw, 9. mandrel, 10. disc spring, 11. base plates, 12. counterdies, 13. expansion sleeve outer shrouds, 14. screws, 15. expansion sleeve inner ring, 16. retainers, 17. large balls, 18. little balls, 19. blank configured ends spinning face, outer rings, 20. outer ring blank positioning ends, 21. outer ring blank configured ends.
Detailed description of the invention
Be described in detail with regard to detailed description of the invention below in conjunction with accompanying drawing.
Accompanying drawing 1-3 discloses the ball spinning building mortion of a kind of integral outer ring formula self-lubricating knuckle bearing, and this building mortion comprises upper bolster 1, locking nut 3, base plate 11, driving arrangement and workbench.The top of upper bolster 1 is connected with driving arrangement, and the inner conical surface ring 2 in the upper bolster 1 of installation is processed with the three groups of roller-ways matched with large, medium and small three groups of balls respectively.Retainer 16 is arranged on inner conical surface ring 2 and constrains in the roller-way of its correspondence by described large, medium and small three groups of balls, and inner conical surface ring 2 is fixed on upper bolster 1 by locking nut 3.The center counterbore of base plate 11 is built with mandrel 9, and base plate 11 is connected with counterdie 12 by bolt, and counterdie 12 is fixing on the table.Described counterdie 12 is dish with stepped cylindrical hole, and wherein, expansion sleeve outer shroud 13, expansion sleeve inner ring 15 are housed in stepped cylindrical hole, top I successively, and middle part cylindrical hole II matches with the shoulder of mandrel 9, installs disc spring 10 in lower cylindrical hole III.
The outer surface of expansion sleeve inner ring 15 is conical external surface, and inner surface is the face of cylinder; The inner surface of described expansion sleeve outer shroud 13 is conical inner surface, and outer surface is the face of cylinder, and the two has small opening at circumferencial direction and to tighten up for it or decontrol.The upper surface of expansion sleeve outer shroud 13 is processed with equally distributed axial tommyhead bolt hole, the screw hole that on counterdie 12, processing is corresponding with the tommyhead bolt hole of expansion sleeve outer shroud 13 upper surface.Gap is radially left in the tommyhead bolt hole, upper surface of described expansion sleeve outer shroud 13, to ensure the change of the tommyhead bolt hole site that expansion sleeve outer shroud 13 produces because of swelling.
Large, medium and small three groups of balls respectively circumference are distributed in three groups of roller-ways of described inner conical surface ring 2, from bottom to top can either roll in the respective roller-way of inner conical surface ring 2 by tactic large, medium and small three groups of balls from big to small, can revolve round the sun around the axis of oscillating bearing under the drive of upper bolster 1 again, simultaneously can also with upper bolster 1 to lower feeding.
The section line in the configured ends spinning face of the ball spinning building mortion of integral outer ring's formula self-lubricating knuckle bearing is straightway, this straightway is parallel to the common tangent of large, medium and small ball, in the present embodiment, the above-mentioned section line in configured ends spinning face and the angle of oscillating bearing axis are 40 °.
Use a manufacturing process for the ball spinning building mortion of described integral outer ring's formula self-lubricating knuckle bearing, said method comprising the steps of:
Step 1: processing outer ring blank 5, outer ring blank 5 be overall ring, inner surface is shape of dehiscing, outer surface is made up of positioning end 20 and configured ends 21, the outer surface of positioning end 20 is the face of cylinder, configured ends 21 outer surface section line is curve, and its maximum outside diameter is 1.2 times of finished product oscillating bearing external diameter.Processed finished products oscillating bearing inner ring 7, for GE20 type oscillating bearing, its internal diameter is 20mm, spherical diameter is 29mm, highly (inner race width) is 16mm, outer ring blank 5 inner surface processed through step 1 adheres to self-lubricating layer 6, then bearing inner race 7 is placed in the outer ring blank 5 interior (see Fig. 4) being stained with self-lubricating layer 6.
Step 2: the mandrel 9 bearing inner race 7 being enclosed within described ball spinning building mortion positions, the positioning end 20 of described outer ring blank 5 is by tightening screw 14, and be with the expansion sleeve inner ring 15 of opening and expansion sleeve outer shroud 13 to be fixed on the mandrel 9 in the counterbore of counterdie 12, counterdie 12 is fixed on base plate 11 by screw 8, adopts bolt that base plate 11 and workbench are fixed.
Step 3: upper bolster 1 rotates under the driving of machine spindle, determine that the section line in configured ends 21 spinning face 19 and the angle of oscillating bearing axis are 40 °, upper bolster 1 according to given technological parameter to lower feeding, large ball 17, middle ball 4, the successively roll extrusion of little ball 18 3 groups of balls are on the spinning face 19 of outer ring blank 5 configured ends 21, along with the feeding of upper bolster 1, carry out spinning to the configured ends 21 of outer ring blank 5, the inner surface of outer ring blank 5 is plastic deformation to sphere gradually.
Step 4: when upper bolster 1 arrives the target location of setting, ball spinning has been shaped.Oscillating bearing after ball spinning is shaped, now, outer ring blank 5 inner surface and bearing inner race 7 outer surface are without locking and extruding phenomenon, and the play of the gap character composite oscillating bearing between them requires (see Fig. 5).
Step 5: last, carries out turning, grinding to the end face of bearing outer ring 5 and outer surface, thus obtains integral outer ring's formula self-lubricating knuckle bearing finished product (see Fig. 6).
By changing inner conical surface ring 2, retainer 16 and large ball 17, middle ball 4, little ball 18, the object of ball spinning different size integral outer ring formula self-lubricating knuckle bearing can be realized.The disc spring 10 of installing between mandrel 9 and base plate 11, can make between ball spinning process middle (center) bearing inner ring 7 and outer ring blank 5 is flexible contact, thus prevents from causing damage to self-lubricating layer.
Claims (6)
1. the ball spinning building mortion of integral outer ring's formula self-lubricating knuckle bearing, it is characterized in that: inner conical surface ring has the three groups of roller-ways matched with large, medium and small three groups of balls respectively, retainer is fixed on inner conical surface ring and constrains on the roller-way of its correspondence by described large, medium and small three groups of balls, and inner conical surface ring is fixed on upper bolster by locking nut; The center counterbore of base plate is built with mandrel, base plate is connected with counterdie by bolt, described counterdie is a dish with stepped cylindrical hole, wherein, expansion sleeve outer shroud, expansion sleeve inner ring are housed in stepped cylindrical hole, top I successively, middle part cylindrical hole II matches with the shoulder of mandrel, installs disc spring in lower cylindrical hole III.
2. the ball spinning building mortion of integral outer ring according to claim 1 formula self-lubricating knuckle bearing, it is characterized in that: the outer surface of described expansion sleeve inner ring is conical external surface, inner surface is the face of cylinder, the inner surface of described expansion sleeve outer shroud is conical inner surface, outer surface is the face of cylinder, the conical inner surface of described expansion sleeve outer shroud is identical with the tapering of the conical external surface of expansion sleeve inner ring, and expansion sleeve outer shroud and expansion sleeve inner ring process minute opening at circumferencial direction.
3. the ball spinning building mortion of integral outer ring according to claim 2 formula self-lubricating knuckle bearing, it is characterized in that: the upper surface of described expansion sleeve outer shroud processes uniform axial tommyhead bolt hole, the screw hole that on described counterdie, processing is corresponding with the tommyhead bolt hole of expansion sleeve outer shroud upper surface, gap is radially left in the tommyhead bolt hole of expansion sleeve outer shroud upper surface.
4. the ball spinning building mortion of integral outer ring according to claim 1 formula self-lubricating knuckle bearing, it is characterized in that: described large, medium and small three groups of balls respectively circumference are distributed in three groups of roller-ways of described inner conical surface ring, from bottom to top by order arrangement from big to small, large, medium and small three groups of balls can either roll in the respective roller-way of inner conical surface ring, can revolve round the sun around mold axis under the drive of upper bolster again, simultaneously can also with upper bolster to lower feeding.
5. the ball spinning building mortion of the integral outer ring's formula self-lubricating knuckle bearing according to claim 1 or 4, it is characterized in that: it is characterized in that: the section line in configured ends spinning face is straightway, described straightway is parallel to the common tangent of large, medium and small ball, and is 20 ° ~ 45 ° with the angle of oscillating bearing axis.
6. use a manufacturing process for the ball spinning building mortion of the integral outer ring's formula self-lubricating knuckle bearing described in claim 1, it is characterized in that: said method comprising the steps of:
Step 1: processing outer ring blank, outer ring blank is overall ring, and inner surface is shape of dehiscing, outer surface is made up of positioning end and configured ends, the outer surface of positioning end is the face of cylinder, and configured ends outer surface section line is curve, and its maximum outside diameter is 1.1 ~ 1.3 times of finished product oscillating bearing external diameter;
Step 2: processed finished products oscillating bearing inner ring, the outer ring blank inner surface processed through step 1 adheres to self-lubricating layer, then is placed in by bearing inner race and is stained with in the outer ring blank of self-lubricating layer;
Step 3: the mandrel that described bearing inner race is enclosed within described ball spinning building mortion positions, the positioning end of described outer ring blank passes through screw, and be with the expansion sleeve inner ring of opening and expansion sleeve outer shroud to be fixed in the counterbore of counterdie, counterdie is fixed by screws on base plate;
Step 4: upper bolster rotates under the driving of machine spindle, determine that the section line in configured ends spinning face and the angle of oscillating bearing axis are 20 ° ~ 45 °, upper bolster according to given technological parameter to lower feeding, large ball, middle ball, the successively roll extrusion of little ball three groups of balls are on the spinning face of outer ring blank configured ends, along with the feeding of upper bolster, carry out spinning to the configured ends of outer ring blank, the inner surface of outer ring blank is plastic deformation to sphere gradually;
Step 5: when upper bolster arrives the target location of setting, ball spinning has been shaped; Oscillating bearing after ball spinning is shaped, now, outer ring blank inner surface and bearing inner race outer surface are without locking and extrude phenomenon, the play requirement of the gap character composite oscillating bearing between them.
Step 6: last, carries out turning, grinding to the end face of bearing outer ring and outer surface, thus obtains integral outer ring's formula self-lubricating knuckle bearing finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510203029.4A CN104874979B (en) | 2015-04-27 | 2015-04-27 | The ball spinning forming device of integral outer ring's formula self-lubricating knuckle bearing and manufacturing process |
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| CN201510203029.4A CN104874979B (en) | 2015-04-27 | 2015-04-27 | The ball spinning forming device of integral outer ring's formula self-lubricating knuckle bearing and manufacturing process |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106185683A (en) * | 2016-06-29 | 2016-12-07 | 中山市康乃欣生物医疗科技有限公司 | A kind of automatic liquid based thin-layer cell pelleter elevating mechanism |
| 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 |
| CN106944524A (en) * | 2017-03-30 | 2017-07-14 | 上海大学 | Monoblock type self-lubricating knuckle bearing spin forming method |
| CN108278279A (en) * | 2017-12-28 | 2018-07-13 | 洛阳轴承研究所有限公司 | A kind of high precision instrument slewing equipment |
| CN108637073A (en) * | 2018-05-11 | 2018-10-12 | 武汉理工大学 | The thin-wall tube-shaped component flowing building mortion and method of grid ribs in a kind of band |
| CN108971999A (en) * | 2018-07-13 | 2018-12-11 | 沈阳鼓风机集团核电泵业有限公司 | The ramps eccentric processing unit (plant) and processing method of slip ring |
| CN109798304A (en) * | 2019-01-08 | 2019-05-24 | 上海市轴承技术研究所 | Monoblock type self-lubricating knuckle bearing equipment and its close up manufacturing process |
| CN109958716A (en) * | 2017-12-22 | 2019-07-02 | 台州科锦轴承有限公司 | Oscillating bearing swims clearance adjustment apparatus |
| CN115255874A (en) * | 2022-07-28 | 2022-11-01 | 四川航天烽火伺服控制技术有限公司 | Joint bearing closing device |
| CN116652033A (en) * | 2023-07-28 | 2023-08-29 | 季华实验室 | Self-lubricating knuckle bearing extrusion forming die with adjustable size |
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| CN102873161A (en) * | 2012-09-28 | 2013-01-16 | 燕山大学 | Spinning manufacturing method of spherical plain bearing and spinning mould thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106185683A (en) * | 2016-06-29 | 2016-12-07 | 中山市康乃欣生物医疗科技有限公司 | A kind of automatic liquid based thin-layer cell pelleter elevating mechanism |
| 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 |
| CN106944524A (en) * | 2017-03-30 | 2017-07-14 | 上海大学 | Monoblock type self-lubricating knuckle bearing spin forming method |
| CN109958716A (en) * | 2017-12-22 | 2019-07-02 | 台州科锦轴承有限公司 | Oscillating bearing swims clearance adjustment apparatus |
| CN108278279B (en) * | 2017-12-28 | 2019-11-12 | 洛阳轴承研究所有限公司 | A kind of high precision instrument slewing equipment |
| CN108278279A (en) * | 2017-12-28 | 2018-07-13 | 洛阳轴承研究所有限公司 | A kind of high precision instrument slewing equipment |
| CN108637073A (en) * | 2018-05-11 | 2018-10-12 | 武汉理工大学 | The thin-wall tube-shaped component flowing building mortion and method of grid ribs in a kind of band |
| CN108971999A (en) * | 2018-07-13 | 2018-12-11 | 沈阳鼓风机集团核电泵业有限公司 | The ramps eccentric processing unit (plant) and processing method of slip ring |
| CN109798304A (en) * | 2019-01-08 | 2019-05-24 | 上海市轴承技术研究所 | Monoblock type self-lubricating knuckle bearing equipment and its close up manufacturing process |
| 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 |
| CN115255874A (en) * | 2022-07-28 | 2022-11-01 | 四川航天烽火伺服控制技术有限公司 | Joint bearing closing device |
| CN115255874B (en) * | 2022-07-28 | 2023-11-14 | 四川航天烽火伺服控制技术有限公司 | Joint bearing closing-in device |
| CN116652033A (en) * | 2023-07-28 | 2023-08-29 | 季华实验室 | Self-lubricating knuckle bearing extrusion forming die with adjustable size |
| CN116652033B (en) * | 2023-07-28 | 2023-10-27 | 季华实验室 | Self-lubricating knuckle bearing extrusion forming die with adjustable size |
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