WO2012173223A1 - Procédé de fabrication de palier multicouche et palier multicouche - Google Patents

Procédé de fabrication de palier multicouche et palier multicouche Download PDF

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Publication number
WO2012173223A1
WO2012173223A1 PCT/JP2012/065333 JP2012065333W WO2012173223A1 WO 2012173223 A1 WO2012173223 A1 WO 2012173223A1 JP 2012065333 W JP2012065333 W JP 2012065333W WO 2012173223 A1 WO2012173223 A1 WO 2012173223A1
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WO
WIPO (PCT)
Prior art keywords
resin
layer
bearing
manufacturing
metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/065333
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English (en)
Japanese (ja)
Inventor
石井　卓哉
芳郎 沖
林　達也
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NTN Corp
Original Assignee
NTN Corp
NTN Toyo Bearing Co Ltd
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Filing date
Publication date
Application filed by NTN Corp, NTN Toyo Bearing Co Ltd filed Critical NTN Corp
Publication of WO2012173223A1 publication Critical patent/WO2012173223A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/203—Multilayer structures, e.g. sleeves comprising a plastic lining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • 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
    • 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
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/208—Methods of manufacture, e.g. shaping, applying coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/0055—Shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14008—Inserting articles into the mould
    • B29C45/14016—Intermittently feeding endless articles, e.g. transfer films, to the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/04—Bearings
    • B29L2031/045—Bushes therefor
    • 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
    • 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
    • F16C2208/02—Plastics; Synthetic resins, e.g. rubbers comprising fillers, fibres
    • 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
    • F16C2208/02—Plastics; Synthetic resins, e.g. rubbers comprising fillers, fibres
    • F16C2208/04—Glass fibres
    • 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
    • F16C2208/58—Several materials as provided for in F16C2208/30 - F16C2208/54 mentioned as option
    • 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
    • F16C2208/20—Thermoplastic resins
    • F16C2208/66—Acetals, e.g. polyoxymethylene [POM]
    • 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
    • F16C2208/76—Polyolefins, e.g. polyproylene [PP]
    • F16C2208/78—Polyethylene [PE], e.g. ultra-high molecular weight polyethylene [UHMWPE]
    • 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
    • F16C2220/44—Shaping by deformation without removing material by rolling
    • 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
    • F16C2220/80—Shaping by separating parts, e.g. by severing, cracking
    • F16C2220/84—Shaping by separating parts, e.g. by severing, cracking by perforating; by punching; by stamping-out
    • 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
    • F16C2223/30—Coating surfaces
    • F16C2223/44—Coating surfaces by casting molten material on the substrate

Definitions

  • the present invention relates to a method for manufacturing a multi-layer bearing in which a resin layer serving as a sliding surface is injection-formed on the surface of a metal plate. More specifically, the present invention relates to a method for manufacturing a multilayer bearing by continuous injection molding using a metal hoop material.
  • Multi-layer bearings in which polyether ether ketone (hereinafter referred to as PEEK) resin, polyamide resin, liquid crystal polymer, etc. are coated instead of PTFE resin are known.
  • PEEK polyether ether ketone
  • a bronze intermediate layer is sintered on a metal base metal, a lining material layer is applied to a sintered product, and heat and pressure are applied to the lining, intermediate layer and base metal, and the lining is 60 to 90% by weight.
  • a plain bearing is proposed which is a substance having a composition comprising a mixture of PEEK resin, 15 to 3.7% by weight of PTFE resin, 5 to 1.3% by weight of graphite and 20 to 5% by weight of bronze ( Patent Document 1).
  • a wet multilayer sliding member comprising a backing metal layer, a porous sintered layer provided on the backing metal layer, and a surface layer substantially made of PEEK resin impregnated / coated on the porous sintered layer
  • a surface layer substantially made of PEEK resin impregnated / coated on the porous sintered layer has been proposed (see Patent Document 2).
  • PPS polyphenylene sulfide
  • the present invention has been made in order to cope with such problems, and a multi-layer bearing having excellent properties such as creep resistance, low friction and wear resistance under high surface pressure, high quality, and
  • An object of the present invention is to provide a method of manufacturing a multi-layer bearing that can be manufactured at low cost with high productivity.
  • the method for producing a multi-layer bearing according to the present invention is a method for producing a multi-layer bearing in which a resin layer serving as a sliding surface is injection-formed on the surface of a metal plate, the metal hoop material being continuous in a strip shape, A pressing step for continuously forming a plurality of plate-like parts to be a plate, and the metal hoop material is continuously supplied to an injection molding machine, and a synthetic resin is formed on at least one surface of the plate-like part with a base resin.
  • An injection molding step of injection molding a resin layer using a resin composition as a material, and a separation step of separating the metal plate on which the resin layer is formed from the metal hoop material to form a multi-layer bearing It is characterized by that.
  • a step of forming a sintered layer on the resin layer molding surface of the metal hoop material is included before the pressing step.
  • the plate-like portion obtained in the pressing step has at least two uncut portions with the metal hoop material, and in the separation step, the uncut portion is cut to replace the metal plate with the metal hoop material. It is characterized by separating from.
  • the method includes a step of rounding the metal plate on which the resin layer is formed into a cylindrical shape.
  • a step of bending the metal plate on which the resin layer is formed is provided.
  • the resin layer has a thickness of 0.1 to 0.7 mm.
  • a groove is formed on the surface of the resin layer.
  • the above-mentioned synthetic resin is at least one selected from thermoplastic polyimide resin, polyetherketone resin, PEEK resin, PPS resin, polyamideimide resin, polyamide resin, polyethylene resin, and polyacetal resin.
  • the resin composition includes a PTFE resin.
  • the resin composition includes at least one fibrous reinforcing material selected from glass fibers and carbon fibers.
  • the average fiber length of the fibrous reinforcing material is 20 to 200 ⁇ m.
  • the multi-layer bearing of the present invention is a multi-layer bearing in which a resin layer serving as a sliding surface is injection-formed on the surface of a metal plate, and is manufactured by the manufacturing method of the present invention.
  • the multilayer bearing is a thrust multilayer bearing, a radial multilayer bearing, or a radial and thrust multilayer bearing.
  • the manufacturing method of the multi-layer bearing of the present invention includes a pressing step in which a plurality of plate-like portions to be metal plates are continuously formed on a continuous metal hoop material, and a metal hoop material is continuously supplied to an injection molding machine. Then, an injection molding process in which a resin layer is injection-molded using a synthetic resin-based resin composition as a material on at least one surface of the plate-like portion, and a metal plate on which the resin layer is formed is formed into a metal hoop. Since it is provided with a separation step that separates from the material to form a multi-layer bearing, the handling of the manufactured product is good and the productivity is excellent.
  • the multi-layer bearing can be manufactured with high quality and high productivity at low cost.
  • the adhesion between the injection molded resin layer and the metal plate (sintered layer) is increased, and the safety factor is increased. High-quality products can be manufactured.
  • the plate-like part obtained by the pressing step has an uncut portion with at least two metal hoop materials, and in the separation step, the uncut portion is cut to separate the metal plate from the metal hoop material.
  • the twist of the metal plate in the process can be prevented.
  • the metal hoop material can be easily fixed with the mold when continuously supplied to the injection molding machine.
  • a multi-layer bearing that is versatile and suitable for use can be manufactured by providing a step of rounding the metal plate on which the resin layer is formed into a cylindrical shape or a step of bending the metal plate. .
  • a radial multi-layer bearing (winding bush) can be easily manufactured together with the above manufacturing process.
  • the thickness of the resin layer By making the thickness of the resin layer thin (0.1 to 0.7 mm), heat generated by frictional heat easily escapes from the friction surface to the metal plate, making it difficult to store heat. Further, the load resistance is high, and the amount of change is small even under high surface pressure. As a result, the real contact area on the friction surface is also reduced, the frictional force and frictional heat generation are reduced, and there are also the advantages of reducing wear and suppressing an increase in the friction surface temperature.
  • the resulting multilayer bearing is under fluid lubrication of oil, water, chemicals, etc.
  • the frictional shear force is reduced, resulting in low friction and low wear. Further, since these are formed at the time of molding, post-processing (machining) of the resin layer is unnecessary, and a multi-layer bearing can be manufactured at low cost.
  • the synthetic resin is at least one selected from thermoplastic polyimide resin, polyetherketone resin, PEEK resin, PPS resin, polyamideimide resin, polyamide resin, polyethylene resin, and polyacetal resin.
  • a multi-layer bearing having high load resistance, low high surface pressure creep, and excellent wear resistance is manufactured. it can.
  • the injection moldability is stable even if the resin layer has a thin thickness of 0.1 to 0.7 mm.
  • a multi-layer bearing, a thrust multi-layer bearing, a radial multi-layer bearing, and a radial / thrust multi-layer bearing with stable quality can be supplied at low cost.
  • FIG. 1 is a schematic view of the manufacturing process.
  • the manufacturing method of the multilayer bearing of this invention has (1) First, as a press process, it has the process of forming continuously the plate-shaped part 2a used as the metal plate 2 in the metal hoop material 1 continuous in strip
  • a plurality of plate-like portions 2a to be metal plates 2 are continuously formed on a metal hoop material 1 that is continuous in a band shape.
  • the material of the metal hoop material 1 is not particularly limited as long as it is a metal plate-like material having high thermal conductivity such as steel, such as SPCC and SPCE, stainless steel, aluminum, and copper.
  • a steel plate is preferred because it is inexpensive and provides adhesion to the resin layer.
  • the metal hoop material 1 is preferably formed with a sintered layer on the resin layer molding surface before the pressing step. This is because the adhesion between the metal plate 2 and the resin layer 4 can be remarkably improved by the anchor effect of the sintered layer. Thereby, the obtained multi-layer bearing becomes a three-layer structure of a metal plate, a sintered layer, and a resin layer (see FIG. 3 and the like).
  • This sintered layer is formed by, for example, uniformly spraying a sintered metal powder on the surface of the metal hoop material 1 and heating and pressing it.
  • the material of the sintered layer may be any of iron, copper iron, stainless steel, and copper.
  • the metal plate and the sintered layer have similar or the same material because the adhesion between the metal plate and the sintered layer is improved.
  • the material of a sintered layer is copper type
  • lead-containing materials such as lead bronze.
  • the thickness of the metal hoop material 1 is the thickness of the metal plate 2 (plate-like portion 2a).
  • the thickness of the metal hoop material 1 will not be specifically limited if the use in the said manufacturing process is possible. In order to enable the obtained multilayer bearing to be stably used under high surface pressure, it is preferable that the thickness is thicker than the resin layer 4. Specifically, the thickness is preferably 0.5 to 5 mm, and more preferably 0.7 to 2.5 mm.
  • the press machine and method in the pressing step are not particularly limited as long as a required shape (plate-like portion 2a) is punched out and punched, and a plurality of plate-like portions 2a to be the metal plate 2 can be continuously formed. . Further, the shape of the plate-like portion 2a is made to match the required multi-layer bearing. In order to pour resin at the time of injection molding and physically hold and fix the resin layer 4 to the metal plate 2, the following shapes can be added. For example, a plurality of holes are made in the plate-like portion 2a (metal plate 2), and a cutout is provided on the side surface to wrap around the resin.
  • the plate-like portion 2a is preferably provided with the metal hoop material 1 and at least two uncut portions 2b.
  • the metal hoop material 1 is continuously supplied to the injection molding machine and can be easily fixed in the mold during injection molding.
  • the uncut portions 2c may be provided between the continuous plate portions 2a to connect the plate portions 2a to each other.
  • the uncut portions 2b and 2c are provided at a total of four or more.
  • the position of the uncut portion is not particularly limited and may be any problem in use. However, in the case where a cylindrical bearing is rounded, if an uncut part is provided at the joint, interference occurs after the rounding process.
  • FIG. 2 The schematic of an injection molding process is shown in FIG.
  • the metal hoop material 1 is continuously supplied to the mold 3a of the injection molding machine 3, and a resin composition having a synthetic resin as a base resin is used as a material on at least one surface of the plate-like portion 2a.
  • the resin layer 4 is injection molded.
  • this injection molding process hoop molding
  • a series of steps including insertion of the metal hoop material 1 into the mold 3a, mold closing, resin injection into the cavity, mold opening, and feeding of the metal hoop material 1 (molding part removal). The operation is performed continuously and stepwise.
  • the resin layer 4 may be provided partially in consideration of the post-process and the bearing function.
  • the injection molding method vertical type, horizontal type
  • the injection molding surface is always one surface of the metal hoop material, and therefore the front / back determination of the metal hoop material is only required for the first time.
  • the supply to the mold is continuously performed, it is not necessary to insert individual metal plates.
  • a molten resin is poured onto the surface of a metal hoop material (metal plate) at a high speed. Therefore, even when PEEK resin or PPS resin is used as a base resin, the resin is porous by shearing force. It is easy to enter the sintered layer.
  • the thickness of the resin layer is controlled by the mold 3a, the thickness can be easily controlled as compared with the case where the resin layer is formed by impregnation coating or hot plate pressing.
  • the thickness of the resin layer 4 is preferably 0.1 to 0.7 mm. Functionally, if the thickness of the resin layer exceeds 0.7 mm, it is difficult for heat due to friction to escape from the friction surface to the bearing base material, and the friction surface temperature may increase. In addition, the amount of deformation due to the load increases, and the true contact area on the friction surface also increases. As a result, the frictional force and frictional heat generation are increased, and the seizure property may be reduced. On the other hand, if the thickness of the resin layer is less than 0.1 mm, the lifetime during long-term use may be shortened. In consideration of injection moldability, the thickness of the resin layer is preferably 0.2 to 0.7 mm.
  • the thickness of the resin layer is less than 0.2 mm, it is limited to the manufacture of small parts, and if it exceeds 0.7 mm, sink marks may occur and dimensional accuracy may be reduced.
  • the thickness of the resin layer is preferably 0.2 to 0.5 mm.
  • fluid dynamic pressure grooves (see FIG. 1), grooves such as lubrication grooves, concave or convex dimples, and the like can be formed on the surface of the resin layer 4. Since the required surface shape and pattern are formed by transferring the mold during injection molding, product design with a high degree of freedom is possible. By setting on the mold side, the depth and width of the groove and the like can be easily changed depending on the position. Forming a fluid dynamic pressure groove having a depth of 5 to 20 ⁇ m by machining is not practical and difficult in practice.
  • the shape of the fluid dynamic pressure groove, lubrication groove, concave or convex dimple is not particularly limited. Under the lubrication of oil, water, chemicals, etc., by providing a fluid dynamic pressure groove, dynamic pressure can be generated and the friction coefficient can be lowered.
  • the lubrication groove, the concave or convex dimples can be fluid lubricated on the sliding surface, reduce the frictional shear force, and reduce the friction and wear. Fluid dynamic pressure grooves, lubrication grooves, and concave or convex dimples also have the effect of reducing the friction coefficient due to surface pressure dependency by increasing the surface pressure and increasing the surface pressure even under non-lubricated conditions (dry). .
  • the metal plate 2 on which the resin layer 4 is formed is separated from the metal hoop material 1 by a press machine or the like.
  • the uncut portions 2b, 2c, etc. are cut during the separation.
  • gate processing for injection molding may be performed at the same time.
  • the multilayer bearing 6 is obtained.
  • the surface of the resin layer 4 becomes a sliding surface, and is excellent in sliding characteristics under high surface pressure.
  • FIG. 3 is a perspective view of a thrust multi-layer bearing.
  • the multilayer bearing 7 is a three-layer structure in which a sintered layer 5 is formed on the surface of a metal plate 2 and a resin layer 4 is injection-molded thereon. 2d in the figure is a cut mark of an uncut portion cut in the separation step.
  • a step of rounding the metal plate on which the resin layer is formed into a cylindrical shape or a half-cracked shape and a step of bending can be provided.
  • FIG. 4 shows another example of the multilayer bearing manufactured by the manufacturing method of the present invention.
  • FIG. 4 is a perspective view of a radial multi-layer bearing that supports a radial load.
  • the multi-layer bearing 8 can be manufactured by separating the metal plate 2 on which the resin layer 4 is formed from the metal hoop material and then rounding the metal plate 2 into a cylindrical shape. 2d in the figure is a cut mark of an uncut portion cut in the separation step. During the rounding process, stress is applied to the inner resin layer 4 together with the metal plate 2. In order to disperse the stress, it is preferable to form a large number of independent resin layers 4 on the surface of the metal plate 2 instead of the continuous (unbroken) resin layer 4 in the injection molding process.
  • Examples of the shape of the independent resin layer 4 include a method in which the inner surface of the wound bush is divided into at least 4 parts, preferably 8 parts in the circumferential direction, in addition to circles and squares.
  • an axial groove can be formed at a predetermined interval in the circumferential direction instead of an independent resin layer.
  • the resin layer may be on the outer diameter side as necessary.
  • the circumferential length of the radial multi-layer bearing is the length of the metal plate 2 in the winding direction.
  • the inner diameter of the radial multi-layer bearing is not particularly limited, but when the resin layer thickness is 0.1 to 0.7 mm, the inner diameter is preferably 1 mm to 100 mm, and more preferably 3 mm to 30 mm. If the resin layer is too thick relative to the inner diameter of the radial multi-layer bearing, the rounding process may be difficult, and it is necessary to employ the above-mentioned means for stress distribution.
  • FIG. 5 shows another example of the multi-layer bearing manufactured by the manufacturing method of the present invention.
  • FIG. 5 is a perspective view of a radial and thrust multi-layer bearing that supports a radial load and an axial load.
  • the multi-layer bearing 9 can be manufactured by separating the metal plate 2 on which the resin layer 4 is formed from the metal hoop material 1, bending one side of the metal plate 2 at a right angle, and further rounding into a cylindrical shape.
  • . 2d in the figure is a cut mark of an uncut portion cut in the separation step.
  • the multi-layer bearing 9 is a flanged winding bush whose bent portion is a flange 8a.
  • a metal plate 2 on which the resin layer 4 is formed can be manufactured by simply bending after separating it from the metal hoop material.
  • the stress concentrates on the bent portion, so that there is a risk that the resin layer will peel off. Therefore, when bending at least 30 degrees or more, it is preferable not to injection-mold the resin layer in the bent portion in the injection molding process. If the performance is not impaired, the non-sliding portion of the metal plate may be subjected to galvanization, chromate treatment, nickel plating or the like for the purpose of rust prevention.
  • the resin composition used as the material for the resin layer in the injection molding process will be described below.
  • the synthetic resin used as the base resin of the resin composition is not particularly limited as long as it can satisfy the required characteristics of the multilayer bearing and can be injection-molded.
  • Examples of the synthetic resin that can be used in the present invention include thermoplastic polyimide resins, polyether ketone resins, PEEK resins, PPS resins, polyamideimide resins, polyamide resins, polyethylene resins, and polyacetal resins. Each of these synthetic resins may be used alone or may be a polymer alloy in which two or more kinds are mixed.
  • a heat-resistant synthetic resin having a heat distortion temperature (ASTMAD648) of 180 ° C. or higher.
  • a heat resistant synthetic resin include PEEK resin, PPS resin, thermoplastic polyimide resin, and polyamideimide resin.
  • PES resin and PEEK resin are a kind of so-called super engineering plastics, and are synthetic resins that have been used in a high temperature atmosphere in recent years.
  • the PPS resin is a crystalline thermoplastic resin having a polymer structure represented by the following formula (1) in which the benzene ring is connected to the para position by a sulfur bond.
  • the PPS resin having the structure of the following formula (1) has a melting point of about 280 ° C. and a glass transition point of 93 ° C., extremely high rigidity, excellent heat resistance, dimensional stability, wear resistance, sliding characteristics, etc.
  • a crosslinked type a semi-crosslinked type, a linear type, and a branched type.
  • the PPS resin can be used without being limited to these molecular structures and molecular weights.
  • PPS resins that can be used in the present invention include Tosoh # 160, B-063, DIC T4AG, LR-2G, and the like.
  • the PEEK resin is a crystalline thermoplastic resin having a polymer structure represented by the following formula (2) in which the benzene ring is connected to the para position by a carbonyl group and an ether bond.
  • the PEEK resin having the structure of the following formula (2) has a melting point of about 340 ° C. and a glass transition point of 143 ° C., and has excellent heat resistance, creep resistance, load resistance, wear resistance, sliding properties, etc. In addition, it has excellent moldability.
  • PEEK resins examples include PEEK manufactured by Victrex (90P, 150P, 380P, 450P, etc.), KetaSpire manufactured by Solvay Advanced Polymers (KT-820P, KT-880P, etc.), Daicel Degussa VESTAKEEEP made by the company (1000G, 2000G, 3000G, 4000G, etc.) etc. are mentioned.
  • PE resin has a wide range of molecular weight PE ranging from low molecular weight to ultra high molecular weight.
  • ultra-high molecular weight PE cannot be injection molded, it cannot be used in the present invention.
  • the higher the molecular weight of PE the higher the material properties and wear resistance. Therefore, high molecular weight PE that can be injection-molded is preferred.
  • Examples of commercially available PE resins that can be used in the present invention include Lübmer L5000 and L4000 manufactured by Mitsui Chemicals.
  • Polyamide resins that can be used in the present invention include polyamide 6 (PA6) resin, polyamide 6-6 (PA66) resin, polyamide 6-10 (PA610) resin, polyamide 6-12 (PA612) resin, and polyamide 4-6 (PA46). ) Resin, polyamide 9-T (PA9T) resin, modified PA9T resin, polyamide 6-T (PA6T) resin, modified PA6T resin, polymetaxylene adipamide (polyamide MXD-6) resin, and the like.
  • PA9T polyamide 9-T
  • PA9T modified PA9T resin
  • PA6T polyamide 6-T
  • PA6T polymetaxylene adipamide
  • a number represents the number of carbon atoms between amide bonds
  • T represents a terephthalic acid residue.
  • polyacetal resins there are three types of polyacetal resins that can be used in the present invention: homopolymers, copolymers, and block copolymers.
  • thermoplastic polyimide resin which can be used by this invention, the Aurum by Mitsui Chemicals is mentioned, for example.
  • the PTFE resin used in the present invention may employ any of molding powder by suspension polymerization method, fine powder by emulsion polymerization method, and recycled PTFE.
  • recycled PTFE that is difficult to be fiberized by shearing at the time of molding and that does not easily increase the melt viscosity.
  • Regenerated PTFE is a powder that has been irradiated with a heat-treated powder (heated history added), ⁇ -rays or electron beams.
  • a powder obtained by heat-treating molding powder or fine powder a powder obtained by further irradiating this powder with ⁇ -rays or an electron beam, a powder obtained by pulverizing a molding powder or a molded product of fine powder, and then a ⁇ -ray or electron beam.
  • a powder obtained by heat-treating molding powder or fine powder a powder obtained by further irradiating this powder with ⁇ -rays or an electron beam
  • a powder obtained by pulverizing a molding powder or a molded product of fine powder a powder obtained by pulverizing a molding powder or a molded product of fine powder.
  • PTFE resin Commercial products of PTFE resin include: Kitamura Co., Ltd .: KTL-610, KTL-350, KTL-8N, KTL-400H, Mitsui DuPont Fluoro Chemical Co., Ltd .: Teflon (registered trademark) 7-J, Asahi Glass Co., Ltd .: Fullon G163, L169J, L170J, L173J, Daikin Industries, Ltd .: Polyflon M-15, Lubron L-5, Hoechst: Hostaflon TF9205, TF9207, and the like.
  • PTFE modified with a side chain group having a perfluoroalkyl ether group, a fluoroalkyl group, or other fluoroalkyl may be used.
  • Kitamura Co., Ltd .: KTL-610, KTL-450, KTL-350, KTL-8N, KTL-8F, Asahi Glass Co., Ltd .: Fullon L169J, L170J, L173J etc. are mentioned.
  • the blending ratio of the PTFE resin is preferably 3 to 30% by volume, more preferably 5 to 20% by volume with respect to the entire resin composition. If the blending amount of the filler exceeds 30% by volume, the creep resistance of the resin layer may be lowered. On the other hand, when the blending amount of the filler is less than 3% by volume, the effect of improving the low friction property of the resin layer is hardly exhibited.
  • At least one fibrous reinforcing material selected from glass fiber and carbon fiber is blended in order to improve the elastic modulus, load resistance, creep resistance, and wear resistance of the obtained multilayer bearing. Is preferred.
  • the glass fiber and carbon fiber used in the present invention may be used alone or in combination of two or more.
  • the surface of the fibrous reinforcing material is epoxy resin, polyamide resin, polycarbonate resin, polyacetal Surface treatment may be performed using a treatment agent containing a resin or the like, a silane coupling agent (silane treatment), or the like.
  • Glass fibers for use in the present invention are those derived from inorganic glass SiO 2, B 2 O 3, Al 2 O 3, CaO, Na 2 O, K 2 O, MgO, etc. Fe 2 O 3 as a component
  • alkali-free glass (E glass), alkali-containing glass (C glass, A glass) and the like can be used.
  • E glass is about 52 to 56% by weight of SiO 2 , about 8 to 13% by weight of B 2 O 3 , about 12 to 16% by weight of Al 2 O 3 , about 15 to 25% by weight of CaO, Na 2 O or K 2 O contains more than 0 and about 1 wt% or less, and MgO contains more than 0 and about 6 wt% or less.
  • the tensile strength is about 300 ⁇ 400kgf / mm 2, about 350 kgf / mm 2 on average, elastic modulus, include those of about 7400 ⁇ 7700kgf / mm 2, tensile strength, modulus of elasticity, Overall, it is excellent in terms of mass productivity and price.
  • Examples of commercially available glass fibers that can be used in the present invention include milled fibers manufactured by Asahi Fiber Glass Co., Ltd. (MF06JB1-20, 20JJH1-20, 06MW2-20, 20MH2-20, etc.), and milled fibers manufactured by Central Glass Co., Ltd. (EFH75- 01, EFH100-31, EFH150-01, EFH150-31, EFDE50-01, etc.).
  • the carbon fibers used in the present invention may be either pitch-based or PAN-based ones classified from raw materials, but PAN-based carbon fibers having a high elastic modulus are preferred.
  • the calcining temperature is not particularly limited, but a carbonized material calcined at about 1000 to 1500 ° C. is higher than that calcined at a high temperature of 2000 ° C. or higher to be converted into graphite. Even under PV, it is preferable because the sliding partner metal is hardly damaged by wear.
  • the average fiber diameter of the carbon fibers is 20 ⁇ m or less, preferably 5 to 15 ⁇ m. Thick carbon fibers that exceed the above range generate extreme pressure, so the effect of improving load resistance is poor, and when the sliding contact material is an aluminum alloy or non-quenched steel material, wear damage of the counterpart material is increased, which is preferable. Absent.
  • Kureha Kurekamildo M101S, M101F, M101T, M107S, M1007S, M201S, M207S
  • Donakabo Mildo S241, S244, SG241 and SG244
  • examples of the PAN system include Tenax HTA-CMF0160-0H and CMF0070-0H manufactured by Toho Tenax Co., Ltd.
  • Glass fiber and carbon fiber may be chopped fiber or milled fiber, but milled fiber having a fiber length of less than 1 mm is preferable in order to obtain stable thin-wall formability.
  • the average fiber length of the fibrous reinforcing material is preferably 20 to 200 ⁇ m. If it is less than 20 ⁇ m, a sufficient reinforcing effect cannot be obtained, and the creep resistance and wear resistance may be inferior. When the thickness exceeds 200 ⁇ m, the ratio of the fiber length to the thickness of the resin layer becomes large, so that the thin-wall moldability may be deteriorated.
  • the fiber length exceeds 200 ⁇ m, the thin-wall moldability is hindered.
  • an average fiber length of 20 to 100 ⁇ m is preferable.
  • the blending ratio of the fibrous reinforcing material is preferably 5 to 30% by volume with respect to the entire resin composition. Even if the blending amount of the fibrous reinforcing material exceeds 30% by volume, the elastic modulus, load resistance, wear resistance and the like of the resin layer are difficult to increase, and the adhesion strength with the base may be reduced. On the other hand, when the blending amount of the fibrous reinforcing material is less than 5% by volume, the effect of improving the elastic modulus, load resistance, and wear resistance of the resin layer is hardly exhibited.
  • friction property improvers such as graphite, boron nitride, molybdenum disulfide and tungsten disulfide
  • colorants such as carbon powder, iron oxide and titanium oxide
  • heat conduction such as graphite and metal oxide powder.
  • the means for mixing and kneading the above raw materials is not particularly limited, and only the powder raw material is dry-mixed with a Henschel mixer, ball mixer, ribbon blender, ladyge mixer, ultra Henschel mixer, etc. Melting and kneading can be performed with a melt extruder such as an extruder to obtain molding pellets (granules). In addition, a side feed may be used for charging the filler when melt kneading with a twin screw extruder or the like. In the injection molding process, injection molding is performed using the molding pellets.
  • the multi-layer bearing of the present invention comprises, for example, a resin layer having a thickness of 0.1 to 0.7 mm and a metal plate. Since the resin layer is a frictional sliding surface, it is excellent in frictional wear characteristics and the like, and since the metal plate is a bearing base material, it is excellent in heat dissipation and load resistance of frictional heat generation. Therefore, for example, it can be used as a sliding bearing for household / car air conditioner compressors, transmissions for automobiles and construction machines, hydraulic equipment and the like.
  • the multi-layer bearing manufactured by the manufacturing method of the present invention is not particularly limited in shape, and can support one or both of a radial load and an axial load. Specifically, a thrust laminated bearing, a radial laminated bearing, and a radial and thrust laminated bearing as described above can be used.
  • the multi-layer bearing manufacturing method of the present invention is easy to insert a metal plate into a mold, has good handling in the process, and is excellent in productivity.
  • the multi-layer bearing manufactured by this manufacturing method is excellent in creep resistance, low friction and wear resistance under high surface pressure. Therefore, it can be suitably used as a substitute for rolling bearings and thrust needle bearings used in household / car air conditioner compressors, transmissions such as automobiles and construction machines, hydraulic equipment, and the like.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Sliding-Contact Bearings (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention porte sur un procédé de fabrication de palier multicouche, lequel procédé est apte à fabriquer un palier multicouche ayant d'excellentes caractéristiques, telles qu'une résistance au cheminement, de faibles propriétés de frottement et une résistance à l'abrasion sous une pression de contact élevée de façon peu coûteuse avec une qualité élevée et une productivité élevée. Le procédé comporte : une étape de pression consistant à former de façon continue une pluralité de parties en forme de plaque (2a) qui deviennent des plaques métalliques (2) sur un élément de boucle métallique continu en forme de courroie (1) ; une étape de moulage par injection constituant à fournir de façon continue l'élément de boucle métallique (1) à une machine de moulage par injection et à mouler par injection une couche de résine (4) en utilisant, comme matériau, un composite de résine ayant une résine synthétique comme résine de base sur au moins une surface de la partie en forme de plaque (2a) ; et une étape de séparation, consistant à séparer la plaque métallique (2) sur laquelle est formée la couche de résine (4) vis-à-vis de l'élément de boucle métallique (1) afin d'obtenir un palier multicouche (6). Le procédé comporte de plus une étape consistant à enrouler la plaque métallique sous une forme cylindrique après l'étape de séparation.
PCT/JP2012/065333 2011-06-15 2012-06-15 Procédé de fabrication de palier multicouche et palier multicouche Ceased WO2012173223A1 (fr)

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EP2823947A1 (fr) * 2013-07-12 2015-01-14 JTEKT Corporation Procédé de fabrication d'un matériau de résine d'isolation électrique et palier à roulement
US10060430B2 (en) 2013-12-13 2018-08-28 Ntn Corporation Internal gear pump
KR20190065183A (ko) * 2016-10-15 2019-06-11 이노벤트 바이오로직스 (쑤저우) 컴퍼니, 리미티드 Pd-1 항체
EP2833009B1 (fr) * 2012-03-27 2020-06-17 NTN Corporation Palier lisse composite, guide en berceau et écrou coulissant
CN114514384A (zh) * 2019-09-30 2022-05-17 Ntn株式会社 绝缘滚动轴承

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WO2016152741A1 (fr) * 2015-03-20 2016-09-29 Ntn株式会社 Rondelle de butée
JP2016223539A (ja) * 2015-05-29 2016-12-28 大豊工業株式会社 内燃機関用軸受および内燃機関用軸受の製造方法
JP6492156B2 (ja) * 2017-12-28 2019-03-27 Ntn株式会社 内接歯車ポンプ
KR102269884B1 (ko) * 2018-02-01 2021-06-29 한동원 카메라 성능 개선을 위한 인서트사출 제작방법
JP6639592B2 (ja) * 2018-09-05 2020-02-05 Ntn株式会社 ウォータポンプ
KR20250105463A (ko) * 2019-11-08 2025-07-08 생-고뱅 퍼포먼스 플라스틱스 코포레이션 스플릿 베어링, 조립체 및 이의 제조 및 사용 방법

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Publication number Priority date Publication date Assignee Title
EP2833009B1 (fr) * 2012-03-27 2020-06-17 NTN Corporation Palier lisse composite, guide en berceau et écrou coulissant
EP2823947A1 (fr) * 2013-07-12 2015-01-14 JTEKT Corporation Procédé de fabrication d'un matériau de résine d'isolation électrique et palier à roulement
US10060430B2 (en) 2013-12-13 2018-08-28 Ntn Corporation Internal gear pump
KR20190065183A (ko) * 2016-10-15 2019-06-11 이노벤트 바이오로직스 (쑤저우) 컴퍼니, 리미티드 Pd-1 항체
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CN114514384A (zh) * 2019-09-30 2022-05-17 Ntn株式会社 绝缘滚动轴承

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