CN112643355B - Processing method of high molecular polymer bearing assembly - Google Patents
Processing method of high molecular polymer bearing assembly Download PDFInfo
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- CN112643355B CN112643355B CN202011281909.0A CN202011281909A CN112643355B CN 112643355 B CN112643355 B CN 112643355B CN 202011281909 A CN202011281909 A CN 202011281909A CN 112643355 B CN112643355 B CN 112643355B
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- bearing assembly
- bearing
- sliding bearing
- positioning
- outer ring
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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
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/06—Metal-working plant comprising a number of associated machines or apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/121—Use of special materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/14—Special methods of manufacture; Running-in
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C43/00—Assembling bearings
- F16C43/02—Assembling sliding-contact bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2202/00—Solid materials defined by their properties
- F16C2202/50—Lubricating properties
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention provides a processing method of a high molecular polymer bearing component, which comprises the following steps: 1) Assembling the bearing inner ring coated with the high polymer coating with the bearing outer ring to form a sliding bearing assembly; 2) Placing the sliding bearing assembly in a positioning counter bore on a positioning clamp, enabling the side edge of the outer ring of the bearing to be attached to the bottom wall of the positioning counter bore, filling low-melting-point alloy in a gap between the outer wall of the outer ring of the bearing and the inner wall of the positioning counter bore, and fixing the sliding bearing assembly on the positioning clamp, wherein the melting point of the low-melting-point alloy is not higher than 75 ℃; 3) Driving the rolling core rod and/or the sliding bearing assembly to rotate, so that the rolling core rod rolls along the high polymer coating on the inner hole surface of the bearing inner ring; 4) And heating the rolled sliding bearing assembly and the positioning fixture, and taking down the sliding bearing assembly from the positioning fixture after the low-melting-point alloy is melted, so as to carry out subsequent processing on the sliding bearing assembly.
Description
Technical Field
The invention belongs to the technical field of machining, relates to a machining technology of a bearing, and particularly relates to a machining method of a high-molecular polymer bearing assembly.
Background
The sliding bearing is a bearing which works by utilizing sliding friction, has stable and reliable work and small noise, and under the condition of liquid lubrication, the sliding surface is separated by lubricating oil without direct contact, friction loss and surface abrasion can be greatly reduced, and an oil film also has certain vibration absorption capability and is generally applied to the high-speed light-load working condition. In the field of aviation, a sliding bearing is often used, and in order to improve the friction performance of the surface of the inner ring of the bearing, a layer of high polymer material is generally coated on the surface of the inner ring of the bearing to form a sliding bearing assembly.
The processing method of the sliding bearing component in the prior art is to coat high polymer material on the inner surface of the bearing inner ring, and then directly press the inner ring into the bearing outer ring. And then welding the joint of the inner ring, and grinding the outer ring of the sliding bearing assembly to finish the processing. The processing method is characterized in that the high polymer has softer texture and can not be cut by using a common metal cutting tool, so that the bearing inner ring can only obtain the naturally formed size after the sleeve is pressed and welded. In actual processing, the sliding bearing assembly processed has over 50 percent of unqualified inner diameter size and cylindricity, cannot meet the precision requirement, and can only be used as a scrap.
Disclosure of Invention
Aiming at the problems that the sliding bearing component processed by the existing processing method can not meet the precision requirement and has a large number of scrap pieces, the invention provides a processing method of a high polymer bearing component; the method can be used for processing and trimming the high polymer coating on the sliding bearing assembly, and reduces the cylindricity deviation of the inner hole of the bearing, and the specific technical scheme is as follows:
the processing method of the high polymer bearing component comprises the following steps:
1) Assembling the bearing inner ring coated with the high polymer coating with the bearing outer ring to form a sliding bearing assembly;
2) Placing the sliding bearing assembly in a positioning counter bore on a positioning clamp, enabling the side edge of the outer ring of the bearing to be attached to the bottom wall of the positioning counter bore, filling low-melting-point alloy in a gap between the outer wall of the outer ring of the bearing and the inner wall of the positioning counter bore, and fixing the sliding bearing assembly on the positioning clamp, wherein the melting point of the low-melting-point alloy is not higher than 75 ℃;
3) Driving the rolling core rod and/or the sliding bearing assembly to rotate, so that the rolling core rod rolls along the high polymer coating on the inner hole surface of the bearing inner ring;
4) And heating the rolled sliding bearing assembly and the positioning fixture, and taking down the sliding bearing assembly from the positioning fixture after the low-melting-point alloy is melted, so as to carry out subsequent processing on the sliding bearing assembly.
Further defined, the step 1) specifically comprises: and coating the surface of the inner hole of the bearing inner ring with a high polymer to form a high polymer coating, pressing the bearing inner ring into the bearing outer ring, and welding and assembling the seam between the bearing inner ring and the bearing outer ring to form the sliding bearing assembly.
Further defined, the step 3) specifically comprises: and (3) installing a positioning fixture provided with the sliding bearing assembly and the rolling core rod on a processing machine tool, and driving the rolling core rod and/or the sliding bearing assembly to rotate so that the rolling core rod rolls along the high polymer coating on the inner hole surface of the bearing inner ring.
Further defined, the heating temperature in step 4) is not higher than 80 ℃.
Further defined, the step 4) of subsequent processing steps of the sliding bearing assembly are: and (3) installing the sliding bearing assembly on the expandable mandrel, enabling the outer circle positioning surface of the expandable mandrel to be attached to the inner hole surface of the bearing inner ring, and grinding the outer wall of the bearing outer ring on a grinding machine to finish the processing of the sliding bearing assembly.
Further limited, the surface roughness of the rolling core rod (4) is less than Ra0.05, the cylindricity error is less than or equal to 0.01mm, and the diameter is more than or equal to 15mm.
Further limiting, a positioning counter bore (51) on the positioning clamp (5) is a step hole, the diameter of the lower end hole of the positioning counter bore is 0.01-0.03 mm larger than the outer diameter of the bearing outer ring, the hole depth is 3-4 mm, and the diameter of the upper end hole of the positioning counter bore is 15-25 mm larger than the bearing outer ring. The total depth of the positioning counter bore (the sum of the depths of the lower end hole and the upper end hole) is 1-2 mm smaller than the height of the bearing outer ring.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the high polymer coating coated on the bearing inner ring is rolled through the rolling core rod, and the high polymer coating is processed and trimmed, so that the processing precision of an inner hole on the bearing inner ring is improved, the runout error formed on the bearing inner ring during the subsequent processing of the outer wall of the bearing outer ring is controlled, the processing precision and the processing qualification rate of the sliding bearing assembly are improved, the scrapping number of the sliding bearing assembly is reduced, and the processing cost of the sliding bearing assembly is further reduced.
Drawings
FIG. 1 is a schematic structural view of a plain bearing assembly;
FIG. 2 is a schematic view of the structure of a rolling mandrel;
FIG. 3 is a structural view of a localization fixture;
FIG. 4 is a schematic illustration of a rolling mandrel process;
FIG. 5 is an illustration of the movement trace of a rolling mandrel rolling a high molecular polymer coating;
the high-molecular polymer coating, the inner ring of the 2-bearing, the outer ring of the 3-bearing, the 4-rolling mandrel, the 5-positioning clamp, the 51-positioning counter bore and the 6-filling gap are arranged in the hollow cavity.
Detailed Description
The technical scheme of the present invention will be further explained with reference to the drawings and examples, but the present invention is not limited to the embodiments described below.
The processing method of the high polymer bearing component is characterized by comprising the following steps:
1) Assembling the bearing inner ring coated with the high polymer coating 1 with the bearing outer ring to form a sliding bearing assembly;
2) Placing the sliding bearing assembly in a positioning counter bore 51 on a positioning clamp 5, enabling the side edge of the outer ring of the bearing to be attached to the bottom wall of the positioning counter bore 51, filling low-melting-point alloy in a gap between the outer wall of the outer ring of the bearing and the inner wall of the positioning counter bore 51, and fixing the sliding bearing assembly on the positioning clamp 5, wherein the melting point of the low-melting-point alloy is not higher than 75 ℃;
3) Driving the rolling core rod 4 and/or the sliding bearing assembly to rotate, so that the rolling core rod 4 rolls along the high polymer coating 1 on the inner hole surface of the bearing inner ring;
4) And heating the rolled sliding bearing assembly and the positioning fixture 5, and taking down the sliding bearing assembly from the positioning fixture 5 after the low-melting-point alloy is melted, so as to carry out subsequent processing on the sliding bearing assembly.
Preferably, step 1) is specifically: and coating the surface of an inner hole of the bearing inner ring with a high polymer to form a high polymer coating 1, pressing the bearing inner ring into the bearing outer ring, and welding and assembling the seam between the bearing inner ring and the bearing outer ring to form the sliding bearing assembly.
Preferably, step 3) is specifically: the positioning fixture 5 provided with the sliding bearing assembly and the rolling core rod 4 are arranged on a processing machine tool, and the rolling core rod 4 and/or the sliding bearing assembly are driven to rotate, so that the rolling core rod 4 rolls along the high polymer coating 1 on the inner hole surface of the bearing inner ring.
Preferably, the heating temperature in step 4) is not higher than 80 ℃.
Preferably, the subsequent processing steps of the sliding bearing assembly in step 4) are: and (3) installing the sliding bearing assembly on the expandable mandrel, enabling the outer circle positioning surface of the expandable mandrel to be attached to the inner hole surface of the bearing inner ring, and grinding the outer wall of the bearing outer ring on a grinding machine to finish the processing of the sliding bearing assembly.
Preferably, the surface roughness of the rolling core rod 4 is less than Ra0.05, the cylindricity error is less than or equal to 0.01mm, and the diameter is more than or equal to 15mm.
Preferably, the positioning counter bore 51 on the positioning clamp 5 is a step hole, the diameter of the lower end hole is 0.01-0.03 mm larger than the outer diameter of the bearing outer ring, and the hole depth is 3-4 mm. The diameter of the upper end hole is 15-25 mm larger than the diameter of the bearing outer ring. The total depth of the positioning counter bore (the sum of the depths of the lower end hole and the upper end hole) is 1-2 mm smaller than the height of the bearing outer ring.
Referring to fig. 1, the sliding bearing assembly consists of a high polymer coating (1), a bearing inner ring (2) and a bearing outer ring (3), wherein the bearing inner ring (2) is pressed into the bearing outer ring (3), and a seam between the bearing inner ring (2) and the bearing outer ring (3) is welded and assembled.
Referring to FIG. 2, the rolling core rod (4) is a cylindrical rod with surface roughness less than Ra0.05, cylindricity error less than or equal to 0.01mm and diameter more than or equal to 15mm.
Referring to fig. 3, a positioning counter bore (51) is formed in the upper portion of the positioning clamp (5), the diameter of a lower end hole of the positioning counter bore (51) is 0.01-0.03 mm larger than the outer diameter of the bearing outer ring, and the depth of the hole is 3-4 mm. The diameter of the upper end hole is 15-25 mm larger than the diameter of the bearing outer ring. The total depth of the positioning counter bore (the sum of the depths of the lower end hole and the upper end hole) is 1-2 mm smaller than the height of the bearing outer ring.
Example 1
The processing method of the high molecular polymer bearing component of the embodiment comprises the following steps:
1) Coating the surface of an inner hole of the bearing inner ring with a high polymer to form a high polymer coating 1, pressing the bearing inner ring into the bearing outer ring through a press, and welding and assembling the joint of the bearing inner ring and the bearing outer ring to form a sliding bearing assembly;
2) Placing the sliding bearing assembly in a positioning counter bore 51 on a positioning clamp 5, enabling the side edge of the outer ring of the bearing to be attached to the bottom wall of the positioning counter bore 51, filling low-melting-point alloy in a gap between the outer wall of the outer ring of the bearing and the inner wall of the positioning counter bore 51, fixing the sliding bearing assembly on the positioning clamp 5, and compacting by using a pressing plate, wherein the compacting direction of the pressing plate is parallel to the axis of an inner hole of the bearing assembly;
3) The positioning fixture 5 provided with the sliding bearing assembly is rotatably connected with a workpiece mounting seat of a processing machine tool, the rolling core rod 4 is clamped on the processing machine tool, the positioning fixture 5 and the rolling core rod 4 are driven to rotate, meanwhile, the outer side wall of the bottom of the rolling core rod 4 is tightly attached to the inner hole surface of the bearing inner ring 2, the rolling core rod 4 is rotated, the rolling core rod 4 rolls along the high polymer coating 1 on the inner hole surface of the bearing inner ring, and the rolling direction of the rolling core rod 4 is opposite to the feeding direction of the positioning fixture 5, see fig. 4 and 5.
4) The rolling sliding bearing assembly and the positioning fixture 5 are arranged in a metal box, the metal box is placed in a heating box for baking and heating, the set temperature of the heating box is not higher than 80 ℃ for preventing the sliding bearing assembly from being deformed by heat, the sliding bearing assembly is taken down from the positioning fixture 5 after the low-melting-point alloy is melted, the sliding bearing assembly is arranged on an expandable mandrel, the outer circular positioning surface of the expandable mandrel is attached to the inner hole surface of the bearing inner ring, the outer wall of the bearing outer ring is ground on a grinding machine, and the processing of the sliding bearing assembly is completed.
In this example, the surface roughness=ra0.04 of the rolling plug 4, the cylindricity error=0.01 mm, and the diameter=15 mm of the cylindrical rod. The diameter of the positioning counter bore 51 is 0.03mm larger than the outer diameter of the bearing outer ring, and the hole depth is 4mm.
Example 2
The processing method of the high molecular polymer bearing component of the embodiment comprises the following steps:
1) Coating the surface of an inner hole of the bearing inner ring with a high polymer to form a high polymer coating 1, pressing the bearing inner ring into the bearing outer ring through a press, and welding and assembling the joint of the bearing inner ring and the bearing outer ring to form a sliding bearing assembly;
2) The sliding bearing assembly is placed in a positioning counter bore 51 on a positioning clamp 5, so that the side edge of the bearing outer ring is attached to the bottom wall of the positioning counter bore 51, and a gap between the outer wall of the bearing outer ring and the inner wall of the positioning counter bore 51 is filled with low-melting-point alloy (the low-melting-point alloy is a common alloy material and is generally made of bismuth, tin, lead, indium and other element materials, and the melting point of the low-melting-point alloy is lower. The low-melting-point alloy used in the invention has a melting point not higher than 75 ℃, the melting point of the low-melting-point alloy is not higher than 75 ℃, the sliding bearing assembly is fixed on the positioning fixture 5, and is pressed by using the pressing plate, and the pressing direction of the pressing plate is parallel to the axis of the inner hole of the bearing assembly;
3) The positioning fixture 5 provided with the sliding bearing assembly is fixed on a processing machine tool, the rolling core rod 4 is clamped on the processing machine tool, the rolling core rod 4 is driven to rotate, meanwhile, the outer side wall of the bottom of the rolling core rod 4 is tightly attached to the inner hole surface of the bearing inner ring 2, and the rolling core rod 4 is rotated, so that the rolling core rod 4 rolls along the high polymer coating 1 on the inner hole surface of the bearing inner ring.
4) The rolling sliding bearing assembly and the positioning fixture 5 are arranged in a metal box, the metal box is placed in a heating box for baking and heating, the set temperature of the heating box is not higher than 80 ℃ for preventing the sliding bearing assembly from being deformed by heat, the sliding bearing assembly is taken down from the positioning fixture 5 after the low-melting-point alloy is melted, the sliding bearing assembly is arranged on an expandable mandrel, the outer circular positioning surface of the expandable mandrel is attached to the inner hole surface of the bearing inner ring, the outer wall of the bearing outer ring is ground on a grinding machine, and the processing of the sliding bearing assembly is completed.
In this example, the surface roughness=ra0.03, the cylindricity error=0.05 mm, and the diameter=16 mm of the cylindrical rod of the rolling plug 4. The diameter of the positioning counter bore 51 is 0.01mm larger than the outer diameter of the bearing outer ring, and the hole depth is 3mm.
Claims (6)
1. The processing method of the high polymer bearing component is characterized by comprising the following steps of:
1) Assembling the bearing inner ring coated with the high polymer coating (1) with the bearing outer ring to form a sliding bearing assembly;
2) Placing the sliding bearing assembly in a positioning counter bore (51) on a positioning clamp (5), enabling the side edge of the outer ring of the bearing to be attached to the bottom wall of the positioning counter bore (51), filling low-melting-point alloy in a gap between the outer wall of the outer ring of the bearing and the inner wall of the positioning counter bore (51), and fixing the sliding bearing assembly on the positioning clamp (5) at the temperature of not higher than 75 ℃ in a melting point of the low-melting-point alloy;
3) Driving the rolling core rod (4) and/or the sliding bearing assembly to rotate, so that the rolling core rod (4) rolls along the high polymer coating (1) on the inner hole surface of the bearing inner ring;
4) Heating the rolled sliding bearing assembly and the positioning fixture (5), and taking down the sliding bearing assembly from the positioning fixture (5) after the low-melting-point alloy is melted, and carrying out subsequent processing on the sliding bearing assembly;
the step 3) is specifically as follows: the positioning fixture (5) provided with the sliding bearing assembly and the rolling core rod (4) are arranged on a processing machine tool, and the rolling core rod (4) and/or the sliding bearing assembly are driven to rotate, so that the rolling core rod (4) rolls along the high polymer coating (1) on the inner hole surface of the bearing inner ring; the rolling direction of the rolling core rod (4) is opposite to the feeding direction of the positioning clamp (5).
2. The method for manufacturing a high molecular polymer bearing assembly according to claim 1, wherein the step 1) specifically comprises: and coating the surface of an inner hole of the bearing inner ring with a high polymer to form a high polymer coating (1), pressing the bearing inner ring into the bearing outer ring, and welding and assembling the seam between the bearing inner ring and the bearing outer ring to form the sliding bearing assembly.
3. The method of manufacturing a high molecular polymer bearing assembly according to any one of claims 1 to 2, wherein the heating temperature in step 4) is not higher than 80 ℃.
4. A method of manufacturing a high molecular weight polymer bearing assembly according to claim 3, wherein the following steps of the step 4) of manufacturing the sliding bearing assembly are: and (3) installing the sliding bearing assembly on the expandable mandrel, enabling the outer circle positioning surface of the expandable mandrel to be attached to the inner hole surface of the bearing inner ring, and grinding the outer wall of the bearing outer ring on a grinding machine to finish the processing of the sliding bearing assembly.
5. The method for processing a high molecular polymer bearing assembly according to claim 4, wherein the surface roughness of the rolling mandrel (4) is less than Ra0.05, the cylindricity error is less than or equal to 0.01mm, and the diameter is more than or equal to 15mm.
6. The processing method of the high polymer bearing assembly according to claim 5, wherein the positioning counter bore (51) on the positioning clamp (5) is a step hole, the diameter of the lower end hole is 0.01-0.03 mm larger than the outer diameter of the bearing outer ring, and the hole depth is 3-4 mm; the diameter of the upper end hole is 15-25 mm larger than the diameter of the bearing outer ring; the total depth of the positioning counter bore (51) is 1-2 mm smaller than the height of the bearing outer ring.
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| CN202011281909.0A CN112643355B (en) | 2020-11-16 | 2020-11-16 | Processing method of high molecular polymer bearing assembly |
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| CN202011281909.0A CN112643355B (en) | 2020-11-16 | 2020-11-16 | Processing method of high molecular polymer bearing assembly |
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| CN103486141A (en) * | 2013-09-10 | 2014-01-01 | 丽水职业技术学院 | Production method of high-precision polymer substrate joint bearing |
| CN104343822A (en) * | 2014-11-19 | 2015-02-11 | 申科滑动轴承股份有限公司 | Plain bearing bush of high molecular material and manufacturing method for plain bearing bush |
| CN204320608U (en) * | 2014-12-10 | 2015-05-13 | 常州南车柴油机零部件有限公司 | A kind of piston ring fills coating filling device |
| CN204954619U (en) * | 2015-08-14 | 2016-01-13 | 钟祥新宇机电制造股份有限公司 | Bearing inner race cylindrical grinding fixture device |
| CN105864284A (en) * | 2016-06-29 | 2016-08-17 | 沈阳工业大学 | Solid lubrication type aircraft spherical plain bearing and manufacturing method thereof |
| CN110039268A (en) * | 2019-05-29 | 2019-07-23 | 浙江钱富冷挤机械有限公司 | The processing method of cold-extruded high abrasion bearing outer ring |
| CN111075832A (en) * | 2019-11-22 | 2020-04-28 | 中国航发西安动力控制科技有限公司 | Sliding bearing |
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| CN112643355A (en) | 2021-04-13 |
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