CN115614383A - Self-lubricating long rod joint bearing - Google Patents

Self-lubricating long rod joint bearing Download PDF

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Publication number
CN115614383A
CN115614383A CN202211368208.XA CN202211368208A CN115614383A CN 115614383 A CN115614383 A CN 115614383A CN 202211368208 A CN202211368208 A CN 202211368208A CN 115614383 A CN115614383 A CN 115614383A
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CN
China
Prior art keywords
rod end
thread rod
joint bearing
bearing
end joint
Prior art date
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Pending
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CN202211368208.XA
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Chinese (zh)
Inventor
林靖翔
邓小林
陈跃峰
陈尚群
石秒霞
林圣淼
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Fujian Deyuan Intelligent Technology Co ltd
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Fujian Deyuan Intelligent Technology Co ltd
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Priority to CN202211368208.XA priority Critical patent/CN115614383A/en
Publication of CN115614383A publication Critical patent/CN115614383A/en
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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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02—Sliding-contact bearings
    • F16C23/04—Sliding-contact bearings self-adjusting
    • F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D33/00—Producing bushes for bearings
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • 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
    • F16C33/10—Construction relative to lubrication
    • F16C33/1095—Construction relative to lubrication with solids as lubricant, e.g. dry coatings, powder
    • 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
    • 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
    • F16C33/122—Multilayer structures of sleeves, washers or liners
    • F16C33/125—Details of bearing layers, i.e. the lining
    • 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
    • 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
    • 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
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/20—Alloys based on aluminium
    • 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
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/30—Fluoropolymers
    • F16C2208/32—Polytetrafluorethylene [PTFE]
    • 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
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/60—Polyamides [PA]
    • 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
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/80—Thermosetting resins
    • F16C2208/82—Composites, i.e. fibre reinforced thermosetting resins
    • 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
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • F16C2220/04—Shaping by casting by injection-moulding
    • 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
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/46—Shaping by deformation without removing material by forging
    • 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
    • F16C2220/00—Shaping
    • F16C2220/60—Shaping by removing material, e.g. machining
    • F16C2220/70—Shaping by removing material, e.g. machining by grinding
    • 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
    • F16C2223/00—Surface treatments; Hardening; Coating
    • F16C2223/02—Mechanical treatment, e.g. finishing
    • F16C2223/08—Mechanical treatment, e.g. finishing shot-peening, blasting

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

The invention discloses a self-lubricating long rod joint bearing, which adopts the technical scheme that: the novel bearing comprises an external thread rod end oscillating bearing, wherein an internal thread rod end oscillating bearing is arranged on one side of the external thread rod end oscillating bearing, one end of the internal thread rod end oscillating bearing extends into the internal part of the external thread rod end oscillating bearing and is in threaded connection with the external thread rod end oscillating bearing, a nut is sleeved outside the internal thread rod end oscillating bearing through a thread, a locking gasket is arranged on one side of the nut, the locking gasket is sleeved outside the internal thread rod end oscillating bearing, the other side of the internal thread rod end oscillating bearing is in contact with the external thread rod end oscillating bearing, outer rings are fixedly arranged on one sides of the external thread rod end oscillating bearing and the internal thread rod end oscillating bearing, and the novel bearing has the advantages that: reduce self-lubricating stock joint bearing self-lubricating layer and inner circle coefficient of friction, the friction temperature is low, reduces the friction loss, has excellent wearability, self-lubricity, still has higher bearing capacity simultaneously, is fit for working under the higher operating condition of temperature.

Description

Self-lubricating long rod joint bearing
Technical Field
The invention relates to the technical field of long rod joint bearings, in particular to a self-lubricating long rod joint bearing.
Background
The joint bearing is a spherical sliding bearing, the basic type is composed of an inner ring and an outer ring with spherical sliding spherical contact surfaces, the joint bearing is mainly composed of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface, can bear larger load, can bear radial load, axial load or combined load existing in both radial and axial directions according to different types and structures of the joint bearing, and can generate self-lubrication in work due to the fact that composite materials are embedded on the outer spherical surface of the inner ring, the joint bearing is generally used for swinging motion with lower speed and can also perform tilting motion within a certain angle range, and when the concentricity of a supporting shaft and a shaft shell hole is larger, the joint bearing can still work normally.
The inner ring and the outer ring of the conventional self-lubricating long rod knuckle bearing are mainly made of bearing steel, the friction and the abrasion of a self-lubricating layer are serious in the working process, and the failure of the self-lubricating knuckle bearing is mainly caused by the abrasion of a backing layer, so that the service life of the self-lubricating bearing is shortened.
Disclosure of Invention
Therefore, the invention provides a self-lubricating long-rod joint bearing to solve the problem that the service life of the self-lubricating bearing is shortened due to the fact that the friction and the abrasion of a self-lubricating layer are serious, and the failure of the self-lubricating joint bearing is mainly the abrasion of a backing layer.
In order to achieve the above purpose, the invention provides the following technical scheme: the self-lubricating long rod joint bearing comprises an external thread rod end joint bearing, wherein one side of the external thread rod end joint bearing is provided with an internal thread rod end joint bearing, one end of the internal thread rod end joint bearing extends into the internal part of the external thread rod end joint bearing and is connected with the external thread rod end joint bearing through threads, the external part of the internal thread rod end joint bearing is sleeved with a nut through threads, one side of the nut is provided with a locking washer sleeved outside the internal thread rod end joint bearing, the other side of the internal thread rod end joint bearing is contacted with the external thread rod end joint bearing, outer rings are fixedly arranged on one sides of the external thread rod end joint bearing and the internal thread rod end joint bearing, a gasket is embedded in each outer ring, an inner ring is arranged in each gasket, the external thread rod end joint bearing, the internal thread rod end joint bearing, the inner rings and the outer rings are made of 42-57% of aluminum alloy, 5-8% of titanium alloy, 10-16% of copper, 0.5-1.5% of niobium, 1.2-3.1% of chromium and 40-52% of stainless steel in a mixed mode, each nut is made of 35-45% of chromium, 25-30% of manganese and 32-40% of silicon, each locking washer is made of 25-36% of chromium, 18-26% of nickel and 28-42% of titanium alloy, and each gasket is made of the following components in a mixed mode: 15-25% of polytetrafluoroethylene, 5-10% of glass fiber, 13-26% of polyvinyl acetal, 15-18% of polyamide, 20-30% of PTFE fiber, 20-30% of aramid fiber and 3-8% of copper-based powder.
Preferably, the specific steps are as follows:
s1, forging: blanking raw materials into blanks with specified dimensions by adopting a numerical control shearing machine, putting the blanks into a medium-frequency induction furnace for heating according to the sequence of melting points from high to low, continuously stirring a metal solution in the smelting process, injecting the heated blanks into a blank making mold on a blank making press by adopting an infrared thermometer for temperature measurement and control, preheating the blank making mold, controlling the blank making press to forge and press the heating end of the blanks, and cutting off the middle connecting skin or flash part of a final forged piece into a forged piece product after forging and pressing are finished;
s2, processing: removing impurities such as oil stain, dust, moisture and the like on the surface of the inner ring outer surface and the outer ring inner surface by adopting methods such as sand blasting, shot blasting, sand paper polishing and the like, and improving the roughness of the metal surface;
s3, lining weaving: uniformly mixing PTFE fibers and aramid fibers to process yarns, and then taking the yarns as warp yarns and glass fibers as weft yarns to be woven alternately to form a fabric;
s4, mixing of the gasket materials: adding polytetrafluoroethylene, polyvinyl acetal, polyamide and copper-based powder into a hopper of an injection molding machine, and stirring and mixing;
s5, plasticizing: the material is heated, compacted, mixed and the like in a machine barrel of an injection molding machine under the action of pressure and temperature, and then is changed into a continuous melt with uniform density, and ZnO is added in the plasticizing process;
s6, die stamping: under the pressure action of a rotating screw or a plunger, plasticized melt is extruded into a casting system of an injection mold through a nozzle and is filled in a whole mold cavity, woven fabric is placed into the mold cavity before casting, the melt is fully pressed with the fabric through casting, and a liner is formed after cooling.
S7, assembling: coating anaerobic adhesive in an inner hole of the outer ring hole, pressing the gasket into the outer ring and bonding and fixing the gasket with the inner side of the outer ring, and pressing the inner ring into the outer ring to enable the outer surface of the inner ring to be in contact with the surface of the gasket.
Preferably, the heating temperature in the step S1 is controlled between 1500 ℃ and 1750 ℃.
Preferably, the preheating temperature of the blank-making mold in the step S1 is controlled to be 110-150 ℃.
Preferably, in the step S2, the manganese steel shot is ejected with compressed air, the manganese steel shot is thrown to the surfaces of the inner ring and the outer ring by a centrifugal force, and the steel shot impacts the surfaces of the inner ring and the outer ring to form a hardened layer on the inner ring and the outer ring.
Preferably, after the weaving of the fabric in the step S3 is completed, the fabric is soaked in acetic acid for softening treatment.
Preferably, the stirring speed in the step S4 is controlled at 200r/min.
Preferably, the heating temperature of the step S5 is controlled to be 210-230 ℃, and the pressure is controlled to be 70-90Mpa.
Preferably, the cooling time in the step S6 is controlled to be 10-15h.
The embodiment of the invention has the following advantages:
can reduce self-lubricating stock joint bearing self-lubricating layer and inner circle coefficient of friction, extension stock joint bearing's life, and stock joint bearing intensity is high, and the friction temperature is low, reduces the friction loss, reduces manufacturing process, has excellent wearability, self-lubricating nature, still has higher bearing capacity simultaneously, is fit for working under the higher operating condition of temperature.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, the proportions, the sizes, and the like shown in the specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical essence, and any modifications of the structures, changes of the proportion relation, or adjustments of the sizes, should still fall within the scope of the technical contents disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention.
FIG. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a cross-sectional view of the overall structure provided by the present invention;
FIG. 3 is a cross-sectional view of the outer race provided by the present invention.
In the figure: the structure comprises an external thread rod end joint bearing 1, an internal thread rod end joint bearing 2, a nut 3, an inner ring 4, a locking washer 5, a gasket 6 and an outer ring 7.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to the attached drawings 1-3, the self-lubricating long rod joint bearing provided by the invention comprises an external thread rod end joint bearing 1, wherein one side of the external thread rod end joint bearing 1 is provided with an internal thread rod end joint bearing 2, one end of the internal thread rod end joint bearing 2 extends into the internal thread rod end joint bearing 1 and is in threaded connection with the external thread rod end joint bearing 1, the external part of the internal thread rod end joint bearing 2 is sleeved with a nut 3 through threads, one side of the nut 3 is provided with a locking washer 5, the locking washer 5 is sleeved on the external part of the internal thread rod end joint bearing 2, the other side of the internal thread rod end joint bearing 2 is contacted with the external thread rod end joint bearing 1, the outer ring 7 is fixedly arranged on one side of each of the external thread rod end joint bearing 1 and the internal thread rod end joint bearing 2, the gasket 6 is embedded in the outer ring 7, the inner ring 4 is arranged in the gasket 6, the external thread rod end joint bearing 1, the internal thread rod end joint bearing 2, the inner ring 4 and the outer ring 7 are made of 42-57% of aluminum alloy, 5-8% of titanium alloy, 10-16% of copper, 0.5-1.5% of niobium, 1.2-3.1% of chromium and 40-52% of stainless steel by mixing, the nut 3 is made of 35-45% of chromium, 25-30% of manganese, 32-40% of silicon, the lock washer 5 is made of 25-36% of chromium, 18-26% of nickel and 28-42% of titanium alloy, and the gasket 6 is made of the following components by uniformly mixing: 15-25% of polytetrafluoroethylene, 5-10% of glass fiber, 13-26% of polyvinyl acetal, 15-18% of polyamide, 20-30% of PTFE fiber, 20-30% of aramid fiber and 3-8% of copper-based powder;
in the embodiment, the external thread rod end oscillating bearing 1 and the internal thread rod end oscillating bearing 2 are connected in a thread fit manner, and the lining 6 is good in wear resistance and small in friction coefficient;
wherein, in order to realize the purpose of making, this device adopts the following technical scheme to realize: the method comprises the following specific steps:
s1, forging: blanking raw materials into blanks with specified size by adopting a numerical control shearing machine, putting the blanks into a medium-frequency induction furnace for heating according to the sequence of melting points from high to low, controlling the heating temperature to be 1500 ℃, continuously stirring a metal solution in the smelting process, injecting the heated blanks into a blank making mold on a blank making press by adopting an infrared thermometer for temperature measurement and control, preheating the blank making mold, controlling the preheating temperature of the blank making mold to be 110-150 ℃, controlling the blank making press to forge a heating end of the blanks, and cutting off a middle connecting skin or a flash part of a final forged piece into a forged piece product after forging;
s2, processing: removing impurities such as oil stain, dust, moisture and the like on the surface of the outer surface of the inner ring 4 and the inner surface of the outer ring 7 by adopting methods such as sand blasting, shot blasting, sand paper polishing and the like, improving the roughness of the metal surface, spraying manganese steel shots with the diameter of 0.8-1.2mm by using compressed air, throwing the manganese steel shots to the surfaces of the inner ring 4 and the outer ring 7 by using a centrifugal force, and impacting the surfaces of the inner ring 4 and the outer ring 7 by using the steel shots to enable the inner ring 4 and the outer ring 7 to generate a hardened layer;
s3, lining weaving: uniformly mixing PTFE fibers and aramid fibers to process yarns, then taking the yarns as warps and glass fibers as wefts to alternately weave to form a fabric, and soaking the fabric into acetic acid to carry out softening treatment after weaving;
s4, mixing the gasket materials: adding polytetrafluoroethylene, polyvinyl acetal, polyamide and copper-based powder into a hopper of an injection molding machine, and stirring and mixing at a stirring speed of 200r/min;
s5, plasticizing: the material is heated, compacted, mixed and the like in a cylinder of an injection molding machine under the action of pressure and temperature to form a continuous melt with uniform density, znO is added in the plasticizing process, the heating temperature is controlled at 210 ℃, and the pressure is controlled at 70Mpa;
s6, die stamping: under the pressure action of a rotating screw or a plunger, the plasticized melt is extruded into a pouring system of an injection mold through a nozzle and is filled in a whole mold cavity, woven fabric is placed into the mold cavity before pouring, the melt is fully pressed with the fabric through pouring, a liner is formed after cooling, and the cooling time is controlled to be 10-15 hours.
S7, assembling: and (3) coating anaerobic adhesive in the inner hole of the outer ring 7, pressing the gasket into the outer ring 7, adhering and fixing the gasket to the inner side of the outer ring 7, and pressing the inner ring 4 into the outer ring 7 to enable the outer surface of the inner ring 4 to be in contact with the surface of the gasket 6.
Example 2:
referring to the attached drawings 1-3, the self-lubricating long rod joint bearing provided by the invention comprises an external thread rod end joint bearing 1, wherein one side of the external thread rod end joint bearing 1 is provided with an internal thread rod end joint bearing 2, one end of the internal thread rod end joint bearing 2 extends into the internal thread rod end joint bearing 1 and is in threaded connection with the external thread rod end joint bearing 1, the external part of the internal thread rod end joint bearing 2 is sleeved with a nut 3 through threads, one side of the nut 3 is provided with a locking washer 5, the locking washer 5 is sleeved on the external part of the internal thread rod end joint bearing 2, the other side of the internal thread rod end joint bearing 2 is contacted with the external thread rod end joint bearing 1, the outer ring 7 is fixedly arranged on one side of each of the external thread rod end joint bearing 1 and the internal thread rod end joint bearing 2, the gasket 6 is embedded in the outer ring 7, the inner ring 4 is arranged in the gasket 6, the external thread rod end joint bearing 1, the internal thread rod end joint bearing 2, the inner ring 4 and the outer ring 7 are made of 42-57% of aluminum alloy, 5-8% of titanium alloy, 10-16% of copper, 0.5-1.5% of niobium, 1.2-3.1% of chromium and 40-52% of stainless steel by mixing, the nut 3 is made of 35-45% of chromium, 25-30% of manganese, 32-40% of silicon, the lock washer 5 is made of 25-36% of chromium, 18-26% of nickel and 28-42% of titanium alloy, and the gasket 6 is made of the following components by uniformly mixing: 15-25% of polytetrafluoroethylene, 5-10% of glass fiber, 13-26% of polyvinyl acetal, 15-18% of polyamide, 20-30% of PTFE fiber, 20-30% of aramid fiber and 3-8% of copper-based powder;
in the embodiment, the external thread rod end oscillating bearing 1 and the internal thread rod end oscillating bearing 2 are connected in a thread fit manner, and the lining 6 has good wear resistance and small friction coefficient;
wherein, in order to realize the purpose of making, this device adopts the following technical scheme to realize: the method comprises the following specific steps:
s1, forging: blanking raw materials into blanks with specified size by adopting a numerical control shearing machine, putting the blanks into a medium-frequency induction furnace for heating according to the sequence of melting points from high to low, controlling the heating temperature to be 1600 ℃, continuously stirring a metal solution in the smelting process, injecting the heated blanks into a blank making mold on a blank making press by adopting an infrared thermometer for temperature measurement and control, preheating the blank making mold, controlling the preheating temperature of the blank making mold to be 110-150 ℃, controlling the blank making press to forge a heating end of the blanks, and cutting off a middle connecting skin or a flash part of a final forged piece into a forged piece product after forging;
s2, processing: removing impurities such as oil stain, dust, moisture and the like on the surface of the outer surface of the inner ring 4 and the inner surface of the outer ring 7 by adopting methods such as sand blasting, shot blasting, sand paper polishing and the like, improving the roughness of the metal surface, spraying manganese steel shots with the diameter of 0.8-1.2mm by using compressed air, throwing the manganese steel shots onto the surfaces of the inner ring 4 and the outer ring 7 by using a centrifugal shot blasting machine, and impacting the surfaces of the inner ring 4 and the outer ring 7 by using the steel shots to enable the inner ring 4 and the outer ring 7 to generate a hardened layer;
s3, lining weaving: uniformly mixing PTFE fibers and aramid fibers to form yarns, then taking the yarns as warp yarns and glass fibers as weft yarns to be alternately woven to form a fabric, and soaking the fabric into acetic acid to carry out softening treatment after the fabric is woven;
s4, mixing of the gasket materials: adding polytetrafluoroethylene, polyvinyl acetal, polyamide and copper-based powder into a hopper of an injection molding machine, and stirring and mixing at a stirring speed of 200r/min;
s5, plasticizing: the material is heated, compacted, mixed and the like in a machine barrel of an injection molding machine under the action of pressure and temperature to form a continuous melt with uniform density, znO is added in the plasticizing process, the heating temperature is controlled at 220 ℃, and the pressure is controlled at 80Mpa;
s6, die stamping: under the pressure action of a rotating screw or a plunger, the plasticized melt is extruded into a pouring system of an injection mold through a nozzle and is filled in a whole mold cavity, woven fabric is placed into the mold cavity before pouring, the melt is fully pressed with the fabric through pouring, a liner is formed after cooling, and the cooling time is controlled to be 10-15 hours.
S7, assembling: and (3) coating anaerobic adhesive in the inner hole of the outer ring 7, pressing the gasket into the outer ring 7, bonding and fixing the gasket with the inner side of the outer ring 7, and pressing the inner ring 4 into the outer ring 7 to enable the outer surface of the inner ring 4 to be in contact with the surface of the gasket 6.
Example 3:
referring to the attached drawings 1-3, the self-lubricating long rod joint bearing provided by the invention comprises an external thread rod end joint bearing 1, wherein one side of the external thread rod end joint bearing 1 is provided with an internal thread rod end joint bearing 2, one end of the internal thread rod end joint bearing 2 extends into the internal thread rod end joint bearing 1 and is in threaded connection with the external thread rod end joint bearing 1, the external part of the internal thread rod end joint bearing 2 is sleeved with a nut 3 through threads, one side of the nut 3 is provided with a locking washer 5, the locking washer 5 is sleeved on the external part of the internal thread rod end joint bearing 2, the other side of the internal thread rod end joint bearing 2 is contacted with the external thread rod end joint bearing 1, the outer ring 7 is fixedly arranged on one side of each of the external thread rod end joint bearing 1 and the internal thread rod end joint bearing 2, the gasket 6 is embedded in the outer ring 7, the inner ring 4 is arranged in the gasket 6, the external thread rod end joint bearing 1, the internal thread rod end joint bearing 2, the inner ring 4 and the outer ring 7 are made of 42-57% of aluminum alloy, 5-8% of titanium alloy, 10-16% of copper, 0.5-1.5% of niobium, 1.2-3.1% of chromium and 40-52% of stainless steel by mixing, the nut 3 is made of 35-45% of chromium, 25-30% of manganese, 32-40% of silicon, the lock washer 5 is made of 25-36% of chromium, 18-26% of nickel and 28-42% of titanium alloy, and the gasket 6 is made of the following components by uniformly mixing: 15-25% of polytetrafluoroethylene, 5-10% of glass fiber, 13-26% of polyvinyl acetal, 15-18% of polyamide, 20-30% of PTFE fiber, 20-30% of aramid fiber and 3-8% of copper-based powder;
in the embodiment, the external thread rod end oscillating bearing 1 and the internal thread rod end oscillating bearing 2 are connected in a thread fit manner, and the lining 6 is good in wear resistance and small in friction coefficient;
wherein, in order to realize the purpose of making, this device adopts the following technical scheme to realize: the method comprises the following specific steps:
s1, forging: blanking raw materials into blanks with specified size by adopting a numerical control shearing machine, putting the blanks into a medium-frequency induction furnace for heating according to the sequence of melting points from high to low, controlling the heating temperature to be 1750 ℃, continuously stirring a metal solution in the smelting process, injecting the heated blanks into a blank making mold on a blank making press by adopting an infrared thermometer for temperature measurement and control, preheating the blank making mold, controlling the preheating temperature of the blank making mold to be 110-150 ℃, controlling the blank making press to forge a heating end of the blanks, and cutting off a middle connecting skin or a flash part of a final forged piece into a forged piece product after forging;
s2, processing: removing impurities such as oil stain, dust, moisture and the like on the surface of the outer surface of the inner ring 4 and the inner surface of the outer ring 7 by adopting methods such as sand blasting, shot blasting, sand paper polishing and the like, improving the roughness of the metal surface, spraying manganese steel shots with the diameter of 0.8-1.2mm by using compressed air, throwing the manganese steel shots to the surfaces of the inner ring 4 and the outer ring 7 by using a centrifugal force, and impacting the surfaces of the inner ring 4 and the outer ring 7 by using the steel shots to enable the inner ring 4 and the outer ring 7 to generate a hardened layer;
s3, lining weaving: uniformly mixing PTFE fibers and aramid fibers to process yarns, then taking the yarns as warps and glass fibers as wefts to alternately weave to form a fabric, and soaking the fabric into acetic acid to carry out softening treatment after weaving;
s4, mixing of the gasket materials: adding polytetrafluoroethylene, polyvinyl acetal, polyamide and copper-based powder into a hopper of an injection molding machine, stirring and mixing, and controlling the stirring speed at 200r/min;
s5, plasticizing: the material is placed in a machine barrel of an injection molding machine, and is subjected to heating, compaction, mixing and other processes under the action of pressure and temperature to form a continuous melt with uniform density, znO is added in the plasticizing process, the heating temperature is controlled at 230 ℃, and the pressure is controlled at 90Mpa;
s6, die stamping: under the pressure action of a rotating screw or a plunger, the plasticized melt is extruded into a pouring system of an injection mold through a nozzle and is filled in a whole mold cavity, woven fabric is placed into the mold cavity before pouring, the melt is fully pressed with the fabric through pouring, a liner is formed after cooling, and the cooling time is controlled to be 10-15 hours.
S7, assembling: and (3) coating anaerobic adhesive in the inner hole of the outer ring 7, pressing the gasket into the outer ring 7, adhering and fixing the gasket to the inner side of the outer ring 7, and pressing the inner ring 4 into the outer ring 7 to enable the outer surface of the inner ring 4 to be in contact with the surface of the gasket 6.
The method of the above example 1-3 is respectively adopted to compare the rigidity of the produced self-lubricating long rod knuckle bearing, the swinging frequency of the self-lubricating long rod knuckle bearing is 2000 after the self-lubricating long rod knuckle bearing is used for 3 hours, the friction coefficient of the liner with the same swinging frequency of 120 times/min, and the temperature data of friction temperature rise:
coefficient of friction Temperature of the rise in temperature Bearing rigidity
Example 1 0.17 45℃ 67.42
Example 2 0.14 43℃ 72.21
Example 3 0.09 40℃ 78.32
From the above, the self-lubricating long rod oscillating bearing produced by the embodiment 3 has high wear resistance and optimal bearing rigidity.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it to an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.

Claims (9)

1. Self-lubricating stock joint bearing, including external screw thread rod end joint bearing (1), its characterized in that: the outer thread rod end joint bearing (1) is provided with an inner thread rod end joint bearing (2) on one side, one end of the inner thread rod end joint bearing (2) extends into the inner part of the outer thread rod end joint bearing (1) and is in threaded connection with the outer thread rod end joint bearing (1), the outer part of the inner thread rod end joint bearing (2) is provided with a nut (3) through a threaded sleeve, one side of the nut (3) is provided with a locking washer (5), the locking washer (5) is sleeved on the outer part of the inner thread rod end joint bearing (2), the other side of the inner thread rod end joint bearing (2) is contacted with the outer thread rod end joint bearing (1), the outer ring (7) is fixedly arranged on one side of each of the outer thread rod end joint bearing (1) and the inner thread rod end joint bearing (2), a gasket (6) is embedded in the outer ring (7), an inner ring (4) is arranged in the gasket (6), the outer thread rod end joint bearing (1), the inner thread rod end joint bearing (2), the inner ring (4) and the outer ring (7) are made of 42-57% of aluminum alloy, 5-8% of titanium alloy, 10-16% of copper, 0.5-1.5% of niobium, 1.2-3.1% of chromium and 40-52% of stainless steel in a mixed mode, the nut (3) is made of 35-45% of chromium, 25-30% of manganese and 32-40% of silicon, and the locking washer (5) is made of 25-36% of chromium, 18-26% of nickel and 28-42% of titanium alloy, wherein the gasket (6) is prepared by uniformly mixing the following components: 15-25% of polytetrafluoroethylene, 5-10% of glass fiber, 13-26% of polyvinyl acetal, 15-18% of polyamide, 20-30% of PTFE fiber, 20-30% of aramid fiber and 3-8% of copper-based powder.
2. The self-lubricating long rod spherical plain bearing of claim 1, wherein: the method comprises the following specific steps:
s1, forging: blanking raw materials into blanks with specified dimensions by adopting a numerical control shearing machine, putting the blanks into a medium-frequency induction furnace for heating according to the sequence of melting points from high to low, continuously stirring a metal solution in the smelting process, injecting the heated blanks into a blank making mold on a blank making press by adopting an infrared thermometer for temperature measurement and control, preheating the blank making mold, controlling the blank making press to forge and press the heating end of the blanks, and cutting off the middle connecting skin or flash part of a final forged piece into a forged piece product after forging and pressing are finished;
s2, processing: the outer surface of the inner ring (4) and the inner surface of the outer ring (7) are subjected to sand blasting, shot blasting, sand paper polishing and other methods to remove impurities such as oil stains, dust, moisture and the like on the surfaces, so that the roughness of the metal surface is improved;
s3, lining weaving: uniformly mixing PTFE fibers and aramid fibers to process yarns, and then taking the yarns as warp yarns and glass fibers as weft yarns to be woven alternately to form a fabric;
s4, mixing of the gasket materials: adding polytetrafluoroethylene, polyvinyl acetal, polyamide and copper-based powder into a hopper of an injection molding machine, and stirring and mixing;
s5, plasticizing: the material is heated, compacted, mixed and the like in a machine barrel of an injection molding machine under the action of pressure and temperature, and then is changed into a continuous melt with uniform density, and ZnO is added in the plasticizing process;
s6, die stamping: under the pressure action of a rotating screw or a plunger, plasticized melt is extruded into a casting system of an injection mold through a nozzle and is filled in a whole mold cavity, woven fabric is placed into the mold cavity before casting, the melt is fully pressed with the fabric through casting, and a liner is formed after cooling.
S7, assembling: anaerobic adhesive is coated in the inner hole of the outer ring (7), the gasket is pressed into the outer ring (7) and is fixedly adhered to the inner side of the outer ring (7), and then the inner ring (4) is pressed into the outer ring (7) so that the outer surface of the inner ring (4) is in contact with the surface of the gasket (6).
3. The self-lubricating long rod spherical plain bearing of claim 2, wherein: the heating temperature in the step S1 is controlled between 1500 ℃ and 1750 ℃.
4. The self-lubricating long rod spherical plain bearing of claim 2, wherein: and the preheating temperature of the blank making mould in the step S1 is controlled to be 110-150 ℃.
5. The self-lubricating long rod spherical plain bearing of claim 2, wherein: in the step S2, the manganese steel shots with the diameter of 0.8-1.2mm are sprayed out by compressed air, the centrifugal shot blasting machine is thrown to the surfaces of the inner ring (4) and the outer ring (7) by centrifugal force, and the steel shots impact the surfaces of the inner ring (4) and the outer ring (7) to enable the inner ring (4) and the outer ring (7) to generate hardened layers.
6. The self-lubricating long rod spherical plain bearing of claim 2, wherein: and S3, soaking the woven fabric into acetic acid for softening after weaving is finished.
7. The self-lubricating long rod spherical plain bearing of claim 2, wherein: in the step S4, the stirring speed is controlled at 200r/min.
8. The self-lubricating long rod spherical plain bearing of claim 2, wherein: and the heating temperature of the step S5 is controlled to be 210-230 ℃, and the pressure is controlled to be 70-90Mpa.
9. The self-lubricating long rod spherical plain bearing of claim 2, wherein: the cooling time in the step S6 is controlled to be 10-15h.
CN202211368208.XA 2022-11-03 2022-11-03 Self-lubricating long rod joint bearing Pending CN115614383A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211368208.XA CN115614383A (en) 2022-11-03 2022-11-03 Self-lubricating long rod joint bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211368208.XA CN115614383A (en) 2022-11-03 2022-11-03 Self-lubricating long rod joint bearing

Publications (1)

Publication Number Publication Date
CN115614383A true CN115614383A (en) 2023-01-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
CN (1) CN115614383A (en)

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