CN112643355A - Processing method of high molecular polymer bearing assembly - Google Patents
Processing method of high molecular polymer bearing assembly Download PDFInfo
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- CN112643355A CN112643355A CN202011281909.0A CN202011281909A CN112643355A CN 112643355 A CN112643355 A CN 112643355A CN 202011281909 A CN202011281909 A CN 202011281909A CN 112643355 A CN112643355 A CN 112643355A
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- bearing assembly
- sliding bearing
- bearing
- outer ring
- positioning
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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
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- 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 assembly, which comprises the following steps: 1) assembling the bearing inner ring coated with the high polymer coating and the bearing outer ring to form a sliding bearing assembly; 2) placing the sliding bearing assembly in a positioning counter bore on a positioning fixture, enabling the side edge of the bearing outer ring 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 bearing outer ring and the inner wall of the positioning counter bore, wherein the melting point of the low-melting-point alloy is not higher than 75 ℃, and fixing the sliding bearing assembly on the positioning fixture; 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 surface of the inner hole of the bearing inner ring; 4) and heating the rolled sliding bearing assembly and the positioning fixture, and taking the sliding bearing assembly off the positioning fixture after the low-melting-point alloy is melted, so as to perform subsequent processing on the sliding bearing assembly.
Description
Technical Field
The invention belongs to the technical field of machining, relates to a bearing machining technology, and particularly relates to a method for machining a high-molecular polymer bearing assembly.
Background
The sliding bearing works by utilizing sliding friction, the sliding bearing works stably and reliably, has low noise, can greatly reduce friction loss and surface abrasion because the sliding surface is separated by lubricating oil without direct contact under the condition of liquid lubrication, has certain vibration absorption capacity of an oil film, and is generally applied under the working condition of high speed and light load. In the field of aviation, a sliding bearing is often used, and in order to improve the friction performance of the surface of a bearing inner ring, a layer of high molecular polymer material is generally coated on the surface of the bearing inner ring to form a sliding bearing assembly.
In the prior art, a method for processing a sliding bearing assembly is to coat a high molecular polymer material on the inner surface of a bearing inner ring, and then directly press the inner ring into a bearing outer ring. And welding the joint of the inner ring, and grinding the outer ring of the sliding bearing assembly to finish machining. The processing method has the advantages that the high molecular polymer is soft in texture and cannot be cut by using a common metal cutting tool, so that the bearing inner ring can only obtain a naturally formed size after sleeve pressing and welding. In actual processing, the inner diameter dimension and the cylindricity of the processed sliding bearing assembly exceed 50 percent are unqualified and can not meet the precision requirement, and the whole sliding bearing assembly can only be used as a waste part.
Disclosure of Invention
Aiming at the problems that the sliding bearing assembly processed by the existing processing method can not meet the precision requirement and has more wasted parts, the invention provides a processing method of a high molecular polymer bearing assembly; the method can be used for processing and finishing the high molecular polymer coating on the sliding bearing component and reducing the cylindricity deviation of the inner hole of the bearing, and the specific technical scheme is as follows:
the processing method of the high molecular polymer bearing assembly comprises the following steps:
1) assembling the bearing inner ring coated with the high polymer coating and the bearing outer ring to form a sliding bearing assembly;
2) placing the sliding bearing assembly in a positioning counter bore on a positioning fixture, enabling the side edge of the bearing outer ring 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 bearing outer ring and the inner wall of the positioning counter bore, wherein the melting point of the low-melting-point alloy is not higher than 75 ℃, and fixing the sliding bearing assembly on the positioning fixture;
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 surface of the inner hole of the bearing inner ring;
4) and heating the rolled sliding bearing assembly and the positioning fixture, and taking the sliding bearing assembly off the positioning fixture after the low-melting-point alloy is melted, so as to perform subsequent processing on the sliding bearing assembly.
Further limiting, the step 1) is specifically as follows: and coating a high molecular polymer on the surface of an inner hole of the bearing inner ring to form a high molecular polymer coating, pressing the bearing inner ring into the bearing outer ring, and welding and assembling a joint of the bearing inner ring and the bearing outer ring to form the sliding bearing assembly.
Further limiting, the step 3) is specifically: and (3) mounting the positioning clamp provided with the sliding bearing assembly and the rolling mandrel on a processing machine tool, and driving the rolling mandrel and/or the sliding bearing assembly to rotate so that the rolling mandrel rolls along the high polymer coating on the surface of the inner hole of the bearing inner ring.
Further limiting, the heating temperature in the step 4) is not higher than 80 ℃.
Further, the subsequent processing steps of the sliding bearing assembly in the step 4) are as follows: and (3) installing the sliding bearing assembly on the expandable mandrel, enabling the excircle positioning surface of the expandable mandrel to be attached to the surface of the inner hole 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 limiting, 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 15 mm.
Further limiting, a positioning counter bore (51) in the positioning fixture (5) is a step hole, the diameter of a 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 an upper end hole of the positioning counter bore is 15-25 mm larger than the outer diameter of the bearing outer ring. The total depth (the sum of the depths of the lower end hole and the upper end hole) of the positioning counter bore 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-molecular polymer coating coated on the bearing inner ring is rolled by the rolling core rod, and the high-molecular polymer coating is processed and repaired, so that the processing precision of the inner hole on the bearing inner ring is improved, and the jump error formed on the bearing inner ring when the outer wall of the bearing outer ring is subsequently processed is controlled, thereby improving the processing precision and the processing qualification rate of the sliding bearing assembly, reducing the scrapped number of the sliding bearing assembly, and further reducing the processing cost of the sliding bearing assembly.
Drawings
FIG. 1 is a schematic view of a plain bearing assembly;
FIG. 2 is a schematic view of a rolled mandrel;
FIG. 3 is a structural view of the positioning fixture;
FIG. 4 is a schematic view of a rolled mandrel process;
FIG. 5 is a schematic view of the movement trace of the polymer coating layer rolled by the rolling mandrel;
the method comprises the following steps of 1-high polymer coating, 2-bearing inner ring, 3-bearing outer ring, 4-rolling core rod, 5-positioning fixture, 51-positioning counter bore and 6-gap filling.
Detailed Description
The technical solutions of the present invention will be further explained below with reference to the drawings and examples, but the present invention is not limited to the embodiments explained below.
The processing method of the high molecular polymer bearing assembly is characterized by comprising the following steps:
1) assembling the bearing inner ring coated with the high polymer coating 1 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 fixture 5, enabling the side edge of the bearing outer ring 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 bearing outer ring and the inner wall of the positioning counter bore 51, wherein the melting point of the low-melting-point alloy is not higher than 75 ℃, and fixing the sliding bearing assembly on the positioning fixture 5;
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 surface of the inner hole of the bearing inner ring;
4) and heating the rolled sliding bearing assembly and the positioning fixture 5, taking the sliding bearing assembly off the positioning fixture 5 after the low-melting-point alloy is melted, and performing subsequent processing on the sliding bearing assembly.
Preferably, step 1) is specifically: and coating a high molecular polymer on the surface of an inner hole of the bearing inner ring to form a high molecular polymer coating 1, pressing the bearing inner ring into the bearing outer ring, and welding and assembling a joint of the bearing inner ring and the bearing outer ring to form the sliding bearing assembly.
Preferably, step 3) is specifically: and (3) installing the positioning clamp 5 provided with the sliding bearing assembly and the rolling mandrel 4 on a processing machine tool, and driving the rolling mandrel 4 and/or the sliding bearing assembly to rotate so that the rolling mandrel 4 rolls along the high polymer coating 1 on the surface of the inner hole 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 the step 4) are as follows: and (3) installing the sliding bearing assembly on the expandable mandrel, enabling the excircle positioning surface of the expandable mandrel to be attached to the surface of the inner hole 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 15 mm.
Preferably, the positioning counter bore 51 on the positioning fixture 5 is a stepped bore, the diameter of the lower end bore of the stepped bore is 0.01-0.03 mm larger than the outer diameter of the bearing outer ring, and the bore depth is 3-4 mm. The diameter of the upper end hole is 15-25 mm larger than that of the bearing outer ring. The total depth (the sum of the depths of the lower end hole and the upper end hole) of the positioning counter bore is 1-2 mm smaller than the height of the bearing outer ring.
Referring to fig. 1, the sliding bearing assembly is composed 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 joint 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 the surface roughness less than Ra0.05, the cylindricity error less than or equal to 0.01mm and the diameter more than or equal to 15 mm.
Referring to fig. 3, the upper part of the positioning fixture (5) is provided with a positioning counter bore (51), 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 hole depth is 3-4 mm. The diameter of the upper end hole is 15-25 mm larger than that of the bearing outer ring. The total depth (the sum of the depths of the lower end hole and the upper end hole) of the positioning counter bore is 1-2 mm smaller than the height of the bearing outer ring.
Example 1
The processing method of the high molecular polymer bearing assembly of the embodiment comprises the following steps:
1) coating a high molecular polymer on the surface of an inner hole of a bearing inner ring to form a high molecular polymer coating 1, pressing the bearing inner ring into a bearing outer ring through a press machine, and welding and assembling a 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 fixture 5, enabling the side edge of the bearing outer ring 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 bearing outer ring and the inner wall of the positioning counter bore 51, enabling the melting point of the low-melting-point alloy to be not higher than 75 ℃, fixing the sliding bearing assembly on the positioning fixture 5, and compressing by using a pressing plate, wherein the compressing 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, a 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 surface of an inner hole of a bearing inner ring 2, the rolling core rod 4 is rotated, the rolling core rod 4 rolls along a high polymer coating 1 on the surface of the inner hole of the bearing inner ring, and referring to fig. 4 and 5, the rolling direction of the rolling core rod 4 is opposite to the feeding direction of the positioning fixture 5.
4) The rolled 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, in order to prevent the sliding bearing assembly from being heated and deformed, the set temperature of the heating box is not higher than 80 ℃, after the low-melting-point alloy is melted, the sliding bearing assembly is taken down from the positioning fixture 5, the sliding bearing assembly is arranged on the expansible core shaft, the outer circle positioning surface of the expansible core shaft is attached to the surface of the inner hole 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 embodiment, the surface roughness of the rolled mandrel 4 is ra0.04, the cylindricity error is 0.01mm, and the diameter is 15 mm. 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 4 mm.
Example 2
The processing method of the high molecular polymer bearing assembly of the embodiment comprises the following steps:
1) coating a high molecular polymer on the surface of an inner hole of a bearing inner ring to form a high molecular polymer coating 1, pressing the bearing inner ring into a bearing outer ring through a press machine, and welding and assembling a joint of the bearing inner ring and the bearing outer ring to form a sliding bearing assembly;
2) the method comprises the steps of placing a sliding bearing assembly in a positioning counter bore 51 on a positioning fixture 5, enabling the side edge of a bearing outer ring to be attached to the bottom wall of the positioning counter bore 51, and filling a low-melting-point alloy (the low-melting-point alloy is a common alloy material, is generally made of bismuth, tin, lead, indium and other element materials, and has a low melting point) in a gap between the outer wall of the bearing outer ring and the inner wall of the positioning counter bore 51. The melting point of the low-melting-point alloy used in the invention is 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 compressed by using the pressing plate, and the compressing direction of the pressing plate is parallel to the axis of the inner hole of the bearing assembly;
3) fixing a positioning clamp 5 provided with a sliding bearing assembly on a processing machine tool, clamping a rolling core rod 4 on the processing machine tool, driving the rolling core rod 4 to rotate, simultaneously enabling the outer side wall of the bottom of the rolling core rod 4 to be tightly attached to the surface of the inner hole of the bearing inner ring 2, and rotating the rolling core rod 4 to roll the rolling core rod 4 along the high polymer coating 1 on the surface of the inner hole of the bearing inner ring.
4) The rolled 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, in order to prevent the sliding bearing assembly from being heated and deformed, the set temperature of the heating box is not higher than 80 ℃, after the low-melting-point alloy is melted, the sliding bearing assembly is taken down from the positioning fixture 5, the sliding bearing assembly is arranged on the expansible core shaft, the outer circle positioning surface of the expansible core shaft is attached to the surface of the inner hole 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 embodiment, the surface roughness of the rolled mandrel 4 is ra0.03, the cylindricity error is 0.05mm, and the diameter is 16 mm. 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 3 mm.
Claims (7)
1. The processing method of the high polymer bearing assembly is characterized by comprising the following steps:
1) assembling the bearing inner ring coated with the high polymer coating (1) 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 fixture (5), attaching the side edge of the bearing outer ring to the bottom wall of the positioning counter bore (51), filling a low-melting-point alloy in a gap between the outer wall of the bearing outer ring and the inner wall of the positioning counter bore (51), wherein the melting point of the low-melting-point alloy is not higher than 75 ℃, and fixing the sliding bearing assembly on the positioning fixture (5);
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 surface of the inner hole of the bearing inner ring;
4) and heating the rolled sliding bearing assembly and the positioning fixture (5), and taking the sliding bearing assembly down from the positioning fixture (5) after the low-melting-point alloy is melted, and performing subsequent processing on the sliding bearing assembly.
2. The method for processing a high molecular polymer bearing assembly according to claim 1, wherein the step 1) is specifically as follows: and coating a high molecular polymer on the surface of an inner hole of the bearing inner ring to form a high molecular polymer coating (1), pressing the bearing inner ring into the bearing outer ring, and welding and assembling a joint of the bearing inner ring and the bearing outer ring to form the sliding bearing assembly.
3. The method for processing a high molecular polymer bearing assembly according to claim 2, wherein the step 3) is specifically as follows: and (3) installing the positioning clamp (5) provided with the sliding bearing assembly and the rolling mandrel (4) on a processing machine tool, and driving the rolling mandrel (4) and/or the sliding bearing assembly to rotate so that the rolling mandrel (4) rolls along the high polymer coating (1) on the surface of the inner hole of the bearing inner ring.
4. A method of manufacturing a high molecular polymer bearing assembly according to any of claims 1 to 3, wherein the heating temperature in step 4) is not higher than 80 ℃.
5. The method for processing a high molecular polymer bearing assembly according to claim 4, wherein the step 4) of subsequently processing the sliding bearing assembly comprises the following steps: and (3) installing the sliding bearing assembly on the expandable mandrel, enabling the excircle positioning surface of the expandable mandrel to be attached to the surface of the inner hole 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.
6. The method for processing a high molecular polymer bearing assembly according to claim 5, 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 greater than or equal to 15 mm.
7. The processing method of the high molecular polymer bearing assembly, as recited in claim 6, characterized in that the positioning counter bore (51) on the positioning fixture (5) is a step bore, the diameter of the lower end bore thereof is 0.01-0.03 mm larger than the outer diameter of the bearing outer ring, and the bore depth is 3-4 mm; the diameter of the upper end hole is 15-25 mm larger than that 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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| RU2539515C2 (en) * | 2013-04-23 | 2015-01-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Орловский государственный аграрный университет" (ФГБОУ ВПО Орел ГАУ) | Plain bearing manufacturing method |
| 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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