CN112963443B - Manufacturing method of titanium alloy knuckle bearing friction pair - Google Patents

Manufacturing method of titanium alloy knuckle bearing friction pair Download PDF

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Publication number
CN112963443B
CN112963443B CN202110178455.2A CN202110178455A CN112963443B CN 112963443 B CN112963443 B CN 112963443B CN 202110178455 A CN202110178455 A CN 202110178455A CN 112963443 B CN112963443 B CN 112963443B
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Prior art keywords
spherical surface
outer ring
ring
lubricating oil
cushion layer
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CN202110178455.2A
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CN112963443A (en
Inventor
王兆昌
张小军
陈清伟
张淮捷
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Fujian Longxi Bearing Group Co Ltd
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Fujian Longxi Bearing Group Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02Sliding-contact bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/10Construction relative to lubrication
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/10Construction relative to lubrication
    • F16C33/1025Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/10Construction relative to lubrication
    • F16C33/1095Construction relative to lubrication with solids as lubricant, e.g. dry coatings, powder
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/12Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F16C33/121Use of special materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72Sealings
    • F16C33/74Sealings of sliding-contact bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2204/00Metallic materials; Alloys
    • F16C2204/40Alloys based on refractory metals
    • F16C2204/42Alloys based on titanium
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00Articles relating to transporting
    • F16C2326/47Cosmonautic vehicles, i.e. bearings adapted for use in outer-space

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

The invention provides a method for manufacturing a lubricating type titanium alloy knuckle bearing friction pair, which is characterized by comprising the following steps of: comprises an outer ring made of a titanium alloy material, a cushion layer made of a fluorine-containing plastic material and an inner ring made of a titanium alloy material; the cushion layer is embedded in the inner spherical surface of the outer ring, and the inner surface of the cushion layer is in contact with the outer spherical surface of the inner ring; sealing structures are arranged between the left side and the right side of the inner spherical surface of the outer ring and the outer spherical surface of the inner ring; the cushion layer is provided with a lubricating oil groove communicated with the inner surface of the cushion layer and the inner spherical surface of the outer ring, and the lubricating oil hole is communicated with the lubricating oil groove and the outer surface of the outer ring. A: carrying out surface strengthening treatment on the inner spherical surface of the outer ring and the outer spherical surface of the inner ring; b: embedding a cushion layer into the inner spherical surface of the outer ring, and processing a lubricating oil groove and a lubricating oil hole on the cushion layer; c: the outer ring wraps and presses the inner ring through plastic deformation; d: and after the inner ring and the outer ring are extruded and formed, a sealing structure is installed. The invention prolongs the service life of the knuckle bearing and is suitable for severe working conditions such as high corrosion resistance, high and low temperature, high impact and the like.

Description

Manufacturing method of titanium alloy knuckle bearing friction pair
Technical Field
The invention relates to the field of bearings, in particular to a joint bearing.
Background
The joint bearing can be divided into a self-lubricating type and a lubricating type according to a lubricating mode, and although the self-lubricating joint bearing is more and more widely applied by virtue of self-lubricating and maintenance-free characteristics, the self-lubricating joint bearing cannot completely replace the lubricating type.
The self-lubricating spherical plain bearing realizes lubrication by forming the transfer film, so that the self-lubricating liner can be continuously worn in the continuous friction process, the bearing play caused by the wear is changed, and the play change condition is difficult to monitor in the using process at present. Therefore, on the premise of convenient maintenance, the lubrication type oscillating bearing has higher reliability and service life because as long as the lubrication is ensured to be sufficient, the abrasion cannot occur theoretically, and the play cannot be changed. At present, the lubricating type joint bearing mainly comprises three types: the dynamic load of steel to steel is not more than 85MPa, the dynamic load of beryllium bronze to steel is not more than 130MPa, and the dynamic load of aluminum bronze to steel is 100MPa. The beryllium bronze has the largest dynamic load on steel, and allows the lubricating interval to be 2430 cycles according to the AS standard, wherein the lubricating interval is the known highest lubricating interval under the condition of high load.
Disclosure of Invention
The invention provides a method for manufacturing a friction pair of a titanium alloy knuckle bearing, which aims to overcome the defects of the prior art, can be used for self-lubricating and grease lubricating, prolongs the service life of the knuckle bearing, and is suitable for severe working conditions such as high corrosion resistance, high and low temperature, high impact and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a manufacturing method of a lubricating type titanium alloy knuckle bearing friction pair is characterized in that:
the lubricating type titanium alloy knuckle bearing friction pair comprises an outer ring, a cushion layer which is compatible with lubricating grease and comprises fluoroplastic materials, and an inner ring which is made of titanium alloy materials; the cushion layer is embedded in the inner spherical surface of the outer ring, and the inner surface of the cushion layer is in contact with the outer spherical surface of the inner ring; sealing structures are arranged between the left side and the right side of the inner spherical surface of the outer ring and the outer spherical surface of the inner ring; the cushion layer is provided with a lubricating oil groove communicated with the inner surface of the cushion layer and the inner spherical surface of the outer ring, the lubricating oil groove comprises a main lubricating oil groove and a branch lubricating oil groove perpendicular to the main lubricating oil groove, and the lubricating oil hole is communicated with the lubricating oil groove and the outer surface of the outer ring; the titanium alloy material is TC4 or TC6 or TA titanium alloy; the surface hardness of the outer spherical surface of the inner ring exceeds HV850;
the manufacturing method of the lubricating type titanium alloy knuckle bearing friction pair comprises the following steps:
a: processing the inner ring and the outer ring to a finished product, and performing surface strengthening treatment on an inner spherical surface and an outer spherical surface of the outer ring to ensure that the surface hardness of the outer spherical surface of the inner ring exceeds HV850;
b: embedding a cushion layer into the inner spherical surface of the outer ring, and processing a lubricating oil groove and a lubricating oil hole on the cushion layer;
c: the outer ring wraps the inner ring through plastic deformation, and the inner ring is protected by pressure deformation while the outer ring is plastically deformed;
d: and after the inner ring and the outer ring are extruded and formed, a sealing structure is installed.
The invention has the advantages that:
the invention fully utilizes the characteristics of impact resistance, fatigue resistance, high corrosion resistance, small linear expansion coefficient and light weight of the titanium alloy, and has strong environmental adaptability. The method firstly provides that under the condition of being lower than the fatigue limit of the titanium alloy, the lubrication is ensured to be sufficient, the bearing can not generate fatigue and abrasion, and the service life is close to infinite. Under specific working conditions, oil-free self-lubrication can be realized.
Drawings
The invention is further illustrated by the following examples in conjunction with the drawings.
FIG. 1 is a cross-sectional view of an outer ring structure of the present invention;
FIG. 2 is a cross-sectional view of an alternative outer race construction of the present invention;
FIG. 3 is a structure diagram of an outer ring, a cushion layer, a lubricating oil groove and a lubricating oil hole;
FIG. 4 is a cross-sectional view of a first seal configuration;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a cross-sectional view of a second seal configuration;
FIG. 7 is an enlarged view of portion B of FIG. 6;
FIG. 8 is a cross-sectional view of a third seal configuration;
fig. 9 is an enlarged view of the portion C in fig. 8.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to the drawings without creative efforts. In order to facilitate an understanding of the invention, reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used in this specification, the terms "upper," "lower," "inner," "outer," "bottom," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and 2:
fig. 2 differs from fig. 1 in that the outer ring 1 of fig. 2 has a flanged construction.
The invention relates to a joint bearing, which comprises an outer ring 1 made of TC4 or TC6 or TA titanium alloy material, a cushion layer 3 made of fluoroplastic material and an inner ring 2 made of titanium alloy material;
the fluorine-containing plastic material of the cushion layer 3 can be compatible with lubricating grease.
The cushion layer 3 is embedded in the inner spherical surface of the outer ring 1, and the inner surface of the cushion layer 3 is contacted with the outer spherical surface of the inner ring 2;
and sealing structures are arranged between the left side and the right side of the inner spherical surface of the outer ring 1 and the outer spherical surface of the inner ring 2.
As shown in fig. 3:
the cushion layer 3 is provided with a lubricating oil groove 4 for communicating the inner surface of the cushion layer 3 with the inner spherical surface of the outer ring 1, and a lubricating oil hole 5 is communicated with the lubricating oil groove 4 and the outer surface of the outer ring 1.
The oil groove 4 includes a main oil groove 41 and one or more branch oil grooves 42 perpendicular to the main oil groove 41.
After the lubricating oil hole 5 is communicated with the outer surface of the outer ring 1, external lubricating oil can be received, the lubricating oil enters the lubricating oil groove 4 through the lubricating oil hole 5, and the main lubricating oil groove 41 and the branch lubricating oil grooves 42 can uniformly distribute the lubricating oil to the contact surface between the inner surface of the cushion layer 3 and the outer spherical surface of the inner ring 2 for lubrication.
The above-mentioned seal structure has several options:
as shown in fig. 4 and 5:
the sealing structure comprises a sealing ring 6 sleeved on the outer spherical surface of the inner ring 2, and an end cover 7 fixed on the side surface of the outer ring 1 compresses the sealing ring 6.
Alternatively, as shown in fig. 6 and 7:
the sealing structure comprises a sealing ring 6' sleeved on the outer spherical surface of the inner ring 2, and the sealing ring 6' is embedded in a sealing ring groove 7' arranged on the inner spherical surface of the outer ring 1.
Alternatively, as shown in fig. 8 and 9:
the seal structure is a skeleton seal 6 ″ provided on the outer spherical surface of the inner race 2 and the side surface of the outer race 1.
The invention uses an innovative friction pair: the dynamic load of the friction pair under working condition is not more than 85MPa (constant load), and the PV value is not more than 400 (N.mm) -2 .mm.s -1 ) Oil-free self-lubrication can be realized; when the whole service life is required to be realized, the dynamic load is allowed to be not more than 120MPa (constant load) or 150MPa (alternating load), and the PV value is not more than 1000 (N.mm) -2 .mm.s -1 ) And the aviation extreme pressure lubricating grease is adopted, the allowed lubrication interval is 10000 cycles, which is obviously higher than the 2430 cycle lubrication interval specified by AS standard. The friction pair made of other materials such as steel/steel, beryllium bronze/steel and aluminum bronze/steel cannot achieve the technical effect of the titanium alloy/fluoroplastic cushion layer friction pair.
The manufacturing method of the bearing comprises the following steps:
a: processing the inner ring 2 and the outer ring 1 to a finished product, and carrying out surface strengthening treatment on the inner spherical surface of the outer ring 1 and the outer spherical surface of the inner ring 2 to ensure that the surface hardness exceeds HV850;
b: embedding a cushion layer 3 into the inner spherical surface of the outer ring 1, and processing a lubricating oil groove 4 and a lubricating oil hole 5;
c: the outer ring 1 enables the outer ring 1 to wrap the inner ring 2 through plastic deformation, and the inner ring 2 is protected by pressure deformation while the outer ring 1 is plastically deformed;
d: and (4) after the inner ring 2 and the outer ring 1 are extruded and formed, installing a sealing structure.
The preparation technology of the invention adopts a special plastic cushion layer which can be compatible with grease for auxiliary lubrication, and the inner ring and the outer ring are provided with a lubricating oil hole, an oil duct and a sealing system, and the inner ring and the outer ring are integrally formed by extrusion.
The bearing of the invention can be applied to the following working conditions:
under the condition of being lower than the fatigue limit of the titanium alloy, the bearing can not be fatigued.
It is especially suitable for marine environment, or severe conditions requiring high corrosion resistance environment, high and low temperature impact environment, etc.
Is particularly suitable for impact-resistant working conditions.
The bearing lubrication use method comprises the following steps:
85MPa (constant load), and PV value not more than 400 (N.mm) -2 .mm.s -1 ) Oil-free self-lubrication can be realized; when the whole service life is required to be realized, the dynamic load is allowed to be not more than 120MPa (constant load) or 150MPa (alternating load), and the PV value is not more than 1000 (N.mm) -2 .mm.s -1 ) And the aviation extreme pressure lubricating grease is adopted, the allowed lubrication interval is 10000 cycles, which is obviously higher than the 2430 cycle lubrication interval specified by AS standard.
The invention provides a lubricating type titanium alloy integral joint bearing, which adopts a special plastic cushion layer compatible with grease as auxiliary lubrication, can meet the use requirements under various working conditions such as oil-free self-lubricating under medium load or grease lubrication with high lubrication interval under high load, and the like, fully utilizes the characteristics of impact resistance, fatigue resistance, high corrosion resistance and light weight of titanium alloy, is close to the infinite service life of the bearing, and is particularly suitable for application in aviation and aerospace working conditions.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (1)

1. A manufacturing method of a lubricating type titanium alloy knuckle bearing friction pair is characterized in that:
the lubricating type titanium alloy knuckle bearing friction pair comprises an outer ring, a cushion layer which is compatible with lubricating grease and comprises fluoroplastic materials, and an inner ring which is made of titanium alloy materials; the cushion layer is embedded in the inner spherical surface of the outer ring, and the inner surface of the cushion layer is in contact with the outer spherical surface of the inner ring; sealing structures are arranged between the left side and the right side of the inner spherical surface of the outer ring and the outer spherical surface of the inner ring; the cushion layer is provided with a lubricating oil groove communicated with the inner surface of the cushion layer and the inner spherical surface of the outer ring, the lubricating oil groove comprises a main lubricating oil groove and a branch lubricating oil groove perpendicular to the main lubricating oil groove, and a lubricating oil hole is communicated with the lubricating oil groove and the outer surface of the outer ring; the titanium alloy material is TC4 or TC6 or TA titanium alloy; the surface hardness of the inner ring outer spherical surface exceeds HV850;
the manufacturing method of the lubricating type titanium alloy knuckle bearing friction pair comprises the following steps:
a: processing the inner ring and the outer ring to a finished product, and performing surface strengthening treatment on an inner spherical surface and an outer spherical surface of the outer ring to ensure that the surface hardness of the outer spherical surface of the inner ring exceeds HV850;
b: embedding a cushion layer into the inner spherical surface of the outer ring, and processing a lubricating oil groove and a lubricating oil hole on the cushion layer;
c: the outer ring wraps and presses the inner ring through plastic deformation, and the inner ring is protected by pressure deformation while the outer ring is plastically deformed;
d: and after the inner ring and the outer ring are extruded and formed, a sealing structure is installed.
CN202110178455.2A 2021-02-09 2021-02-09 Manufacturing method of titanium alloy knuckle bearing friction pair Active CN112963443B (en)

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CN112963443B true CN112963443B (en) 2022-12-20

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CN113483018B (en) * 2021-08-17 2023-05-05 洛阳轴承研究所有限公司 Joint bearing and shield tunneling machine using same

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DE102005029979A1 (en) * 2005-06-28 2007-01-11 Schaeffler Kg Spherical plain bearings
JP2007255712A (en) * 2006-03-21 2007-10-04 Roller Bearing Co Of America Inc Liner and titanium spherical sliding bearing with surface-treated surface
CN201269251Y (en) * 2008-08-07 2009-07-08 福建龙溪轴承(集团)股份有限公司 Lubrication type radial spherical pain bearing for ball seat on V-shaped thrust rod of truck
CN203784094U (en) * 2014-04-11 2014-08-20 新昌县明瑞关节轴承有限公司 Joint bearing with good universality
CN106931036A (en) * 2017-03-29 2017-07-07 上海市轴承技术研究所 Titanium alloy oscillating bearing and its processing method
CN208294945U (en) * 2018-04-23 2018-12-28 上海天安轴承有限公司 A kind of self-lubricating knuckle bearing for steering engine transmission mechanism

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