US20100316517A1 - Swash plate of a swash plate type compressor and the swash plate type compressor - Google Patents

Swash plate of a swash plate type compressor and the swash plate type compressor Download PDF

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Publication number
US20100316517A1
US20100316517A1 US12/866,900 US86690009A US2010316517A1 US 20100316517 A1 US20100316517 A1 US 20100316517A1 US 86690009 A US86690009 A US 86690009A US 2010316517 A1 US2010316517 A1 US 2010316517A1
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Prior art keywords
swash plate
disk
steel sheet
shaped steel
graphite
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US12/866,900
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English (en)
Inventor
Naonari Tanigawa
Yoshio Oki
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NTN Corp
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NTN Corp
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Publication of US20100316517A1 publication Critical patent/US20100316517A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B25/00—Multi-stage pumps
    • F04B25/04—Multi-stage pumps having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/0804—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B27/0821—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block component parts, details, e.g. valves, sealings, lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication
    • F04B27/1054—Actuating elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2350/00—Pretreatment of the substrate
    • B05D2350/30—Change of the surface
    • B05D2350/33—Roughening
    • B05D2350/38—Roughening by mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F01B3/02—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis with wobble-plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/146—Swash plates; Actuating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2253/00—Other material characteristics; Treatment of material
    • F05C2253/12—Coating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2253/00—Other material characteristics; Treatment of material
    • F05C2253/20—Resin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18296—Cam and slide
    • Y10T74/18336—Wabbler type

Definitions

  • the present invention relates to a swash plate of a swash plate type compressor used e.g. in an air-conditioner, and the swash plate type compressor.
  • a swash plate type compressor includes a swash plate mounted directly to a rotary shaft or indirectly to the rotary shaft through a coupling member so as to be oblique to or perpendicular to the rotary shaft in a housing in which a refrigerant exists, the swash plate being in sliding contact with shoes such that the rotary motion of the swash plate is converted to reciprocating motion of pistons through the shoes, thereby compressing and expanding the refrigerant.
  • There are two types of such swash plate type compressors one including two-head pistons and adapted to compressing and expanding the refrigerant on both sides of the pistons, and one including single-head pistons and adapted to compress and expand the refrigerant on one side only of the pistons.
  • the shoes of some of swash plate type compressors slide only on one side of the swash plate, while the shoes of other swash plate type compressors slide on both sides of the swash plate.
  • a metal spray coating layer on each of the sliding surfaces of the metal swash plate on which the shoes slide by metal spraying of a copper type or aluminum type metallic material, and to form on the metal spray coating layer, lead type plating, tin type plating, lead-tin type plating, polytetrafluoroethylene (PTFE) type coating, molybdenum disulfide coating, or a coating of a mixture of molybdenum disulfide and graphite (see e.g. Patent document 1).
  • PTFE polytetrafluoroethylene
  • a lubricating film comprising a solid lubricant such as molybdenum disulfide or polytetrafluoroethylene, a transfer amount adjusting agent such as earthy graphite, and a binder such as polyamideimide on the sliding surfaces of the swash plate through a metal spray coating layer of aluminum (see e.g. Patent document 2).
  • a solid lubricant such as molybdenum disulfide or polytetrafluoroethylene
  • a transfer amount adjusting agent such as earthy graphite
  • a binder such as polyamideimide
  • the purpose of forming a metal spray coating layer of a copper type or an aluminum type between the metal substrate of the swash plate and the resin lubricating coating film is to prevent peeling of the resin lubricating coating film even if the resin lubricating coating film seizes.
  • a soft metal of a copper type or an aluminum type it is possible to prevent the shoes and the metal substrate from directly coming into sliding contact with each other, thus preventing fatal seizure accident, even if the resin lubricating coating film becomes worn.
  • the metal spray coating layer is costly and also tends to lower the flatness of swash plate, it is also being considered to omit such a metal spray layer.
  • a solid lubricant containing polytetrafluoroethylene and hardened with polyamideimide resin, which is a thermosetting resin it is proposed to form sliding layers on the swash plate which comprise a solid lubricant containing polytetrafluoroethylene and hardened with polyamideimide resin, which is a thermosetting resin, and to form, on the shoes which is brought into sliding contact with the swash plate, nickel type plating, thereby further improving lubricity between the swash plate and the shoes (Patent document 3).
  • Patent document 1 JP Patent Publication 8-199327A
  • Patent document 2 JP Patent Publication 2002-089437A
  • Patent document 3 JP Patent Publication 2003-138287A
  • Patent document 4 PCT Publication WO2002/075172
  • An object of the present invention is to provide a swash plate which fulfils the basic properties required for a swash plate, which are stable boundary lubricating state by lubricating oil, and stable friction/wear properties in the boundary lubricating state with lubricating oil running out, without forming a metal spray coating layer comprising a copper type or aluminum type material on the surface of the substrate as an intermediate layer.
  • the present invention provides a swash plate of a swash plate type compressor in which the swash plate is mounted directly to a rotary shaft or indirectly to the rotary shaft through a coupling member so as to be oblique to or perpendicular to the rotary shaft in a housing in which a refrigerant exists, the swash plate being in sliding contact with shoes such that the rotary motion of the swash plate is converted to reciprocating motion of pistons through the shoes, thereby compressing and expanding the refrigerant, wherein the swash plate comprises a substrate formed by pressing a rolled steel into a disk shape, the disk-shaped steel sheet having sliding surfaces on both sides thereof on which the shoes slide, the sliding surfaces being formed by grinding, the swash plate further comprising low-friction resin coating layers formed on the respective sliding surfaces, the coating layers containing 40 to 50% by weight of fluororesin.
  • the substrate of the swash plate according to the present invention comprises, a disk-shaped steel sheet formed by pressing a rolled steel sheet into a disk shape, and having its both side surfaces ground.
  • its surface flatness is high, so that without forming a metal spray layer on the surface, the coating film forming the low-friction resin coating layers adheres strongly to the substrate, thus preventing peeling of the low-friction resin coating layers.
  • the low-friction resin coating layers maintain uniform thickness, which in turn achieves stable boundary lubrication state by lubricating oil, as well as stable friction/wear properties in the boundary lubrication state with lubricating oil running out.
  • Both side surfaces of the disk-shaped steel sheet may be ground using a two-head grinding machine.
  • Both sides of the disk-shaped steel sheet may be ground by a driving type two-head grinding method in which top and bottom surfaces of the disk-shaped steel sheets as the sliding surfaces are simultaneously ground with grinders, while rotating the disk-shaped steel sheet with its center held in position.
  • the ground surfaces of the disk-shaped steel sheet on both sides thereof are ground to a flatness of 8 ⁇ m or less and a parallelism of 10 ⁇ m or less.
  • the flatness and the parallelism are values defined under JIS B 0182.
  • the surface of the substrate before the low-friction resin coating layers are formed thereon may be subjected to shot blasting.
  • the disk-shaped steel sheet may be made of SAPH440C.
  • the low-friction resin coating composition forming the low-friction resin coating layers may be the one described below.
  • the low-friction resin coating composition contains 40 to 50% by weight of fluororesin relative to the coating film.
  • Fluororesins usable in this invention are those capable of imparting low-friction, non-tackiness properties to the coating layers and having sufficient heat resistance to withstand the use temperature atmosphere of the sliding parts.
  • the fluororesin may be polytetrafluoroethylene (melting point: 327° C.; continuous use temperature: 260° C.; hereinafter referred to as “PTFE”).
  • PTFE consists of repeating units of —CF2CF2— and has a sufficiently high melt viscosity of 10 10 ⁇ 10 11 Pa ⁇ s at about 340 to 380° C. Thus, it is less likely to flow even if it is heated to above the melting point, so that PTFE is the most heat-resistant fluororesin. It also shows excellent properties at low temperature, and is superior in friction/wear properties too.
  • PTFE is suitable for use in the present invention.
  • PTFE used should be powder and is preferably, but is not limited to, powder having a particle diameter of 30 ⁇ m or less for smoother surface of the coating film.
  • Matrix materials usable in the low-friction resin coating composition are heat-resistant resins that do not suffer from heat degradation during use of the swash plate and that can bind fluororesin powder particles together and can strongly fix the low-friction resin coating composition to the substrate of the swash plate.
  • the matrix material may be a polyamideimide resin (PAI).
  • PAI is a resin having imide bonds and amide bonds in its molecules.
  • the imide bonds in an aromatic polyamideimide resin may be precursors such as polyamide acids, closed imide rings, or a mixture thereof.
  • aromatic PAIs include PAIs produced from aromatic primary amines such as diphenylmethane diamine and aromatic tribasic acid anhydrides such as mono- or diacyl halide derivatives of trimellitic acid anhydride, and PAIs produced from aromatic tribasic acid anhydrides and aromatic diisocyanate compounds such as diphenylmethane diisocyanate.
  • PAIs of which the imide bonds are higher in ratio than the amide bonds include PAIs produced from aromatic, aliphatic or cycloaliphatic diisocyanate compounds, aromatic tetrabasic acid dianhydride, and aromatic tribasic anhydride. Any of them can be used in the present invention.
  • the low-friction resin coating composition further contains graphite. It is well known that graphite has excellent properties as a solid lubricant, and it is used as a solid lubricant for swash plates.
  • the graphite in the low-friction resin coating composition is preferably one containing 97.5% or more of fixed carbon.
  • the graphite is artificial graphite containing 98.5% or more of fixed carbon.
  • Such graphite is preferable because it is high in conformability with lubricating oil, so that lubricity is maintained by a trace amount of lubricating oil impregnated in the graphite even if no lubricating oil is adhered to the surface of the graphite.
  • the low-friction resin coating composition comprises 40 to 50% by weight of fluororesin and 50 to 60% by weight of matrix material, relative to the coating film. By adding the respective components by these amounts, the bond strength to the substrate, wear resistance of the coating film, and other properties improve. If the content of fluororesin is less than 40% by weight, the friction properties tend to deteriorate. If over 50% by weight, the bond strength of the coating film decreases, thus increasing the possibility of peeling.
  • the resin composition comprises 40 to 50% by weight of fluororesin, 45 to 55% by weight of matrix resin, and 1 to 10% by weight of graphite, relative to the coating film. If the content of graphite is less than 1% by weight, the graphite can scarcely serve the expected function of improving the friction/wear properties. If over 10% by weight, the bond strength of the coating film deteriorates, thus causing the possibility of peeling. If the content of the matrix material is less than 45% by weight, the bond strength of the coating film deteriorates, thus increasing the possibility of peeling. If its content is over 55% by weight, the friction properties deteriorate.
  • the coating film according to the present invention is applied by spray coating of the above-described low-friction resin coating composition.
  • the low-friction resin coating composition is obtained by dispersing or dissolving solid contents, i.e. fluororesin, matrix resin and graphite in a solvent.
  • Solvents usable include ketones such as acetone and methylethylketone, esters such as methyl acetate and ethyl acetate, aromatic hydrocarbons such as toluene and xylene, organic halogenated compounds such as methylchloroform, trichloroethylene and trichlorotri-fluoroethane, and aprotic polar solvents such as N-methyl-2-pyrrolidone (NMP), methylisopyrrolidone (MIP), dimethylformaldehyde (DMAC) and a mixture thereof.
  • NMP N-methyl-2-pyrrolidone
  • MIP methylisopyrrolidone
  • DMAC dimethylformaldehyde
  • the coating film fixed to the substrate by applying the low-friction resin coating composition to the substrate by spray coating and then baking has a thickness of 20 to 50 ⁇ m after baking.
  • the present invention also provides a swash plate type compressor including the above-described swash plate.
  • the swash plate type compressor is especially suitable for application to the type using carbon dioxide gas as a refrigerant.
  • the substrate of the swash plate used in the swash plate type compressor according to the present invention comprises a disk-shaped steel sheet formed by pressing a rolled steel sheet into a disk shape, and both surfaces of the disk-shaped steel sheet is ground, its surface flatness is good, and the coating film forming the low-friction resin coating layers can be strongly fixed to the substrate without the need to form a metal spray coating layer on the surface of the substrate. Thus, the low-friction resin coating layers are less likely to peel off.
  • the low-friction resin coating layers can maintain uniform thickness, which ensures stable boundary lubricating condition by lubricating oil, and also ensures stable friction/wear properties in the boundary lubricating condition even if lubricating oil runs out.
  • the swash plate type compressor according to this invention includes the above-described swash plate, it shows sufficient durability even if carbon dioxide gas is used as a refrigerant, of which the pressure in the compressor reaches as high as 10 MPa.
  • FIG. 1 is a vertical sectional view of a swash type compressor embodying the present invention.
  • FIG. 2 is an enlarged vertical sectional view of the swash plate of FIG. 1 .
  • FIG. 3 is a partially cutaway side view of the swash plate of FIG. 1 .
  • this compressor is a two-way swash plate compressor including a housing 1 in which the refrigerant exists, a swash plate 3 directly fixed to a rotary shaft 2 in the housing 1 so as to be oblique to the rotary shaft 2 , and two-head pistons 5 , and is structured to convert the rotary motion of the swash plate 3 to reciprocating motion of the respective two-head pistons 5 through shoes 4 that slide on both sides of the swash plate 3 , thereby compressing and expanding the refrigerant in cylinder bores 6 that are equiangularly spaced from each other on both sides of the pistons 5 , when the heads of the respective pistons 5 are inserted into and out of the corresponding cylinder bores 6 .
  • the rotary shaft 2 which is rotated at high speed, is supported by needle roller bearings 7 in the radial
  • Each piston 5 has a recess 5 a that straddle the radially outer portion of the swash plate 3 .
  • the recess 5 a has axially opposed surfaces in which spherical seats 9 are formed.
  • the hemispherical shoes 4 are seated in the respective spherical seats 9 .
  • spherical shoes may be used.
  • the shoes 4 support the respective pistons 5 so as to be movable relative to the swash plate 3 as the swash plate 3 rotates, thereby facilitating conversion of the rotary motion of the swash plate 3 to the reciprocating motion of the respective pistons 5 .
  • resin coating layers 10 comprising PTFE as a fluororesin, PAI as a heat-resistant resin, and graphite powder are formed.
  • the substrate 3 a of the swash plate 3 is a disk-shaped steel sheet formed by pressing a rolled steel sheet. Both side surfaces of the disk-shaped steel sheet is ground into sliding surfaces along which the shoes slide.
  • the low-friction resin coating layer 10 which contains 40 to 50% by weight of fluororesin, is formed on each sliding surface.
  • the resin coating layers 10 are formed on the surfaces of the substrate 3 a by applying by spray-coating a coating agent formed by dissolving PAI in a solvent to form a resin solution and diluting the solution by adding PTFE and graphite powder, and then by baking the thus applied coating agent at 240° C.
  • the content ratios of PAI and graphite powder are 150 parts by weight and 10 parts by weight based on 100 parts by weight of PTFE.
  • PTFE used was an irradiated recycled PTFE
  • PAI was a PAI varnish dispersed with N-methylpyrrolidone
  • graphite powder was an artificial graphite having an average particle diameter of 10 ⁇ m.
  • the substrate 3 a of the swash plate 3 was formed as follows: A steel sheet SAPH440C was formed into a disk shape by pressing, and roughly machined by a lathe to the thickness of 6.5 mm and a diameter of 90 mm. Both sides thereof were then ground using a two-head grinding machine (grinder: #80) so that the thickness of the substrate decreases to 6.36 mm. Table 1 shows the measured accuracy values after the respective steps.
  • the disk substrates thus formed were subjected to shot blasting to increase their surface roughness.
  • a low-friction resin coating composition containing formula A as solid contents were applied by spray coating to both sides of the respective specimens thus formed so that their thicknesses are 30 ⁇ m on both sides after baking.
  • final finish machining was carried out using a two-head grinding machine (grinder: #400 for resin) (to the thickness of 6.40 mm). Measured accuracy values after the finish machining are shown in Table 1.
  • PTFE PTFE having an average particle diameter of 10 ⁇ m; 40% by weight
  • PAI having a glass transition temperature of 245° C.; 55% by weight
  • Graphite powder Artificial graphite having an average particle diameter of 10 ⁇ m; 5% by weight
  • a steel sheet S45CAPH440C was formed into a disk shape by pressing, and roughly machined by a lathe to the thickness of 6.5 mm and a diameter of 90 mm. Both sides thereof were then ground using a surface grinding machine (grinder: #80) so that the thickness of the substrate decreases to 6.36 mm. Table 1 shows the measured accuracy values after the respective steps.
  • Formula A was applied by spray coating to both sides of the test piece so that the coating thickness is 30 ⁇ m after baking. After baking, final finish machining was carried out using a surface grinding machine (grinder: #400 for resin) (to the thickness of 6.40 mm). Measured accuracy values after the finish machining are shown in Table 1.
  • Example 1 of Example 2 of Comparative invention invention Example 1 Rough machining Cutting Cutting Cutting of substrate Flatness, ⁇ m 15 15 20 Parallelism, ⁇ m 20 20 30 Finish machining Driving type Driving type Carrier type of substrate two-head two-head two-head grinding grinding grinding Flatness, ⁇ m 3 10 20 Parallelism, ⁇ m 5 15 35 Finishing of Driving type Driving type Carrier type coating film two-head two-head two-head grinding grinding Flatness, ⁇ m 3 3 14 Parallelism, ⁇ m 5 5 20 Thickness of 20 20 coating film Variation 3 12 20
  • the flatness was 8 ⁇ m or less and the parallelism was 10 ⁇ m or less for Example 1 of the invention.
  • the parallelism maximum difference in thickness was 15 ⁇ m. This increased the maximum difference in thickness of the coating film to 12 ⁇ m for Example 2 of the invention, while this difference was stably around 3 ⁇ m for Example 1 of the invention.
  • the flatness was 20 ⁇ m and the parallelism was 35 ⁇ m. After final finishing after coating, there were portions where the substrate was exposed.
  • a friction/wear test was conducted using a thrust type tester in which three steel shoes (SUJ2) are brought into contact with the respective test pieces (three-shoe-on type) to measure the friction coefficients at the sliding portions in the initial stage of the test and five minutes into the test, and the depths of wear on the sliding surfaces of the respective test pieces, five minutes into the test.
  • the test conditions are as follows:
  • Example 1 of Example 2 of Comparative invention invention Example 1 Initial friction 0.02 0.02 0.02 coefficient Frictional 0.04 0.04 0.08 coefficient five minutes into the test Depth of wear five 0.002 0.002 Peeling of resin minutes into the test layer Determination of the ⁇ ⁇ X test results
  • the friction coefficient was stable from the beginning of the test to 5 minutes, and the depth of wear was extremely low.
  • the resin coating film containing fluororesin which has superior seizure resistance, is less likely to peel off, so that the swash plate according to the present invention shows sufficiently high durability when used in a swash plate type compressor using carbon dioxide gas as a refrigerant of which the pressure in the compressor reaches as high as 10 MPa.
  • the swash plate according to the present invention is formed by pressing a rolled steel sheet into a disk shape, grinding both side surfaces of the disk-shaped steel sheet formed by pressing using a two-head grinding machine, and forming a low-friction coating layer containing 40 to 50% by weight of fluororesin in the coating film on each sliding surface. This eliminates the necessity for flame spray coating layers, which were necessary in conventional arrangements.
  • the metal substrate and the low-friction resin coating composition can be formed with high accuracy, uneven wear does not occur, so that the metal substrate is never exposed even if refrigerant oil runs out.
  • the swash plate according to the present invention is economical and can effectively and stably achieve a boundary lubricating state even if refrigerating machine oil runs out during operation of the swash plate type compressor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US12/866,900 2008-03-03 2009-02-27 Swash plate of a swash plate type compressor and the swash plate type compressor Abandoned US20100316517A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2008-052172 2008-03-03
JP2008052172A JP5321943B2 (ja) 2008-03-03 2008-03-03 斜板式コンプレッサの斜板および斜板式コンプレッサ
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140147317A1 (en) * 2011-05-23 2014-05-29 Robert Bosch Gmbh Compressor with swash plate
US20150176572A1 (en) * 2012-06-07 2015-06-25 Ntn Corporation Swash plate for swash plate compressor, method for manufacturing same, and swash plate compressor
US20150285233A1 (en) * 2014-04-07 2015-10-08 Halla Visteon Climate Control Corp. Hinge mechanism for a variable displacement compressor
EP3173622A4 (de) * 2014-07-23 2018-01-24 NTN Corporation Halbkugelförmiger schuh für einen taumelscheibenkompressor sowie taumelscheibenkompressor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6030822B2 (ja) * 2010-09-28 2016-11-24 Ntn株式会社 斜板式コンプレッサの斜板および斜板式コンプレッサ
DE102012213972A1 (de) * 2012-08-07 2014-02-13 Schaeffler Technologies AG & Co. KG Riementrieb für ein Kraftfahrzeug
KR20150053010A (ko) * 2013-11-07 2015-05-15 한라비스테온공조 주식회사 사판식 압축기 및 그 사판의 제조 방법
KR102166980B1 (ko) 2014-08-29 2020-10-16 한온시스템 주식회사 윤활 피막용 조성물 및 이를 포함하는 압축기
CN107630809A (zh) * 2017-10-11 2018-01-26 中国航发西安动力控制科技有限公司 一种用于轴向柱塞泵的斜盘

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146401A (en) * 1975-08-02 1979-03-27 Hitachi Chemical Company, Ltd. Graphite material having compressibility and recovering property and method for manufacturing the same
US5737956A (en) * 1993-12-22 1998-04-14 Aisin Seiki Kabushiki Kaisha Method for manufacturing a force-receiving plate for friction device
US5871337A (en) * 1995-10-26 1999-02-16 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Swash-plate compressor with leakage passages through the discharge valves of the cylinders
US20030000379A1 (en) * 2001-05-10 2003-01-02 Manabu Sugiura Shoe and the same for swash plate type compressor
US6568918B2 (en) * 2000-09-13 2003-05-27 Kabushiki Kaisha Tokyo Jidoshokki Lubrication coating for the sliding portion of a swashplate compressor
US6752065B2 (en) * 2001-11-07 2004-06-22 Kabushiki Kaisha Toyota Jidoshokki Sliding member and sliding device
US6921205B2 (en) * 2001-03-16 2005-07-26 Taiho Kogyo Co., Ltd. Sliding material
US20050257684A1 (en) * 2004-05-21 2005-11-24 Manabu Sugiura Sliding film, sliding member, composition for sliding film, sliding device, swash-plate type compressor, process for forming sliding film, and process for producing sliding member
US20050284203A1 (en) * 2004-06-24 2005-12-29 Kato Seisakusho Co., Ltd. Pressed work and manufacturing method thereof
US7241722B2 (en) * 2002-06-24 2007-07-10 Kabushiki Kaisha Toyota Jidoshokki Sliding component
CN100418877C (zh) * 2006-09-11 2008-09-17 洛阳市冠奇工贸有限责任公司 天然石墨超高纯度提纯工艺
US20080248269A1 (en) * 2004-07-09 2008-10-09 Nobuhiro Shibuya Slide Member for Compressor
WO2009100771A1 (de) * 2008-02-14 2009-08-20 Erwin Junker Maschinenfabrik Gmbh Verfahren und schleifmaschine zum komplettschleifen von kurzen und/oder stabförmigen werkstücken
US7862307B2 (en) * 2003-04-17 2011-01-04 Zexel Valeo Climate Control Corporation Swash plate compressor

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62251078A (ja) * 1986-04-21 1987-10-31 Kanebo Ltd 研磨材
JP3254808B2 (ja) * 1993-05-18 2002-02-12 東レ株式会社 ポリオキシメチレン樹脂組成物
JPH073149A (ja) * 1993-06-16 1995-01-06 Toray Ind Inc ポリアミド樹脂組成物
JP3642077B2 (ja) 1995-01-27 2005-04-27 大豊工業株式会社 斜板式コンプレッサーの斜板
CN2218050Y (zh) * 1995-03-17 1996-01-24 莱州市石材机械总厂 可调磨头中心距的磨抛装置
JP3948774B2 (ja) * 1997-01-22 2007-07-25 カルソニックカンセイ株式会社 斜板式コンプレッサ用斜板の製造方法
WO1998036173A1 (fr) * 1997-02-14 1998-08-20 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Compresseur a plateau oscillant
JP4023872B2 (ja) * 1997-06-26 2007-12-19 大豊工業株式会社 斜板式コンプレッサー用斜板
US6694864B2 (en) * 1997-10-09 2004-02-24 Kabushiki Kaisha Toyota Jidoshokki Swash plate type compressor
JP4075175B2 (ja) * 1998-07-08 2008-04-16 Ｎｏｋ株式会社 突起部のプレス加工方法及び突起部を有するキャンセルプレート
JP2002210640A (ja) * 2001-01-18 2002-07-30 Nippon Sheet Glass Co Ltd ディスク基板の研磨方法
JP2003042061A (ja) * 2001-05-21 2003-02-13 Toyota Industries Corp 斜板式圧縮機
JP2002349428A (ja) * 2001-05-28 2002-12-04 Toyota Industries Corp 可変容量型圧縮機の製造方法及び該方法に用いられる冶具
JP3617519B2 (ja) * 2003-06-13 2005-02-09 大豊工業株式会社 ディスク部材の製造方法
CN1894073A (zh) * 2003-10-01 2007-01-10 大昌精机株式会社 垂直双头表面研磨机中的修整方法
JP4583750B2 (ja) 2003-12-25 2010-11-17 大豊工業株式会社 摺動材料
JP2006008994A (ja) * 2004-05-21 2006-01-12 Toyota Central Res & Dev Lab Inc 摺動被膜、摺動部材、摺動被膜用組成物、摺動装置、斜板式コンプレッサ、摺動被膜の形成方法および摺動部材の製造方法
JP5076276B2 (ja) * 2005-01-17 2012-11-21 オイレス工業株式会社 複層摺動部材
CN1814407B (zh) * 2005-02-04 2011-01-12 上海日进机床有限公司 一种磨削大规格工件的方法及装置
JP4993908B2 (ja) * 2005-12-21 2012-08-08 日産自動車株式会社 樹脂組成物、摺動部材及び摺動装置
DE102006007055B4 (de) * 2006-02-15 2008-07-17 Bsh Holice A.S. Verfahren zum Schleifen von stabförmigen Werkstücken, Schleifmaschine zur Durchführung des Verfahrens und Schleifzelle in Zwillingsanordnung

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146401A (en) * 1975-08-02 1979-03-27 Hitachi Chemical Company, Ltd. Graphite material having compressibility and recovering property and method for manufacturing the same
US5737956A (en) * 1993-12-22 1998-04-14 Aisin Seiki Kabushiki Kaisha Method for manufacturing a force-receiving plate for friction device
US5871337A (en) * 1995-10-26 1999-02-16 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Swash-plate compressor with leakage passages through the discharge valves of the cylinders
US6568918B2 (en) * 2000-09-13 2003-05-27 Kabushiki Kaisha Tokyo Jidoshokki Lubrication coating for the sliding portion of a swashplate compressor
US6921205B2 (en) * 2001-03-16 2005-07-26 Taiho Kogyo Co., Ltd. Sliding material
US20030000379A1 (en) * 2001-05-10 2003-01-02 Manabu Sugiura Shoe and the same for swash plate type compressor
US6752065B2 (en) * 2001-11-07 2004-06-22 Kabushiki Kaisha Toyota Jidoshokki Sliding member and sliding device
EP1310674B1 (de) * 2001-11-07 2006-12-20 Kabushiki Kaisha Toyota Jidoshokki Beschichtung eines Taumelscheibenverdichters
US7241722B2 (en) * 2002-06-24 2007-07-10 Kabushiki Kaisha Toyota Jidoshokki Sliding component
US7862307B2 (en) * 2003-04-17 2011-01-04 Zexel Valeo Climate Control Corporation Swash plate compressor
US20050257684A1 (en) * 2004-05-21 2005-11-24 Manabu Sugiura Sliding film, sliding member, composition for sliding film, sliding device, swash-plate type compressor, process for forming sliding film, and process for producing sliding member
US20050284203A1 (en) * 2004-06-24 2005-12-29 Kato Seisakusho Co., Ltd. Pressed work and manufacturing method thereof
US20080248269A1 (en) * 2004-07-09 2008-10-09 Nobuhiro Shibuya Slide Member for Compressor
CN100418877C (zh) * 2006-09-11 2008-09-17 洛阳市冠奇工贸有限责任公司 天然石墨超高纯度提纯工艺
WO2009100771A1 (de) * 2008-02-14 2009-08-20 Erwin Junker Maschinenfabrik Gmbh Verfahren und schleifmaschine zum komplettschleifen von kurzen und/oder stabförmigen werkstücken

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140147317A1 (en) * 2011-05-23 2014-05-29 Robert Bosch Gmbh Compressor with swash plate
US20150176572A1 (en) * 2012-06-07 2015-06-25 Ntn Corporation Swash plate for swash plate compressor, method for manufacturing same, and swash plate compressor
EP2878820A4 (de) * 2012-06-07 2016-05-11 Ntn Toyo Bearing Co Ltd Taumelscheibe für taumelscheibenkompressor, verfahren zur herstellung davon und taumelscheibenkompressor
US20150285233A1 (en) * 2014-04-07 2015-10-08 Halla Visteon Climate Control Corp. Hinge mechanism for a variable displacement compressor
US9765764B2 (en) * 2014-04-07 2017-09-19 Hanon Systems Hinge mechanism for a variable displacement compressor
EP3173622A4 (de) * 2014-07-23 2018-01-24 NTN Corporation Halbkugelförmiger schuh für einen taumelscheibenkompressor sowie taumelscheibenkompressor
US10598167B2 (en) 2014-07-23 2020-03-24 Ntn Corporation Semispherical shoe for swash plate compressor and swash plate compressor

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CN102037242A (zh) 2011-04-27
CN102037242B (zh) 2014-09-24
DE112009000434T5 (de) 2011-03-17
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US20140215821A1 (en) 2014-08-07
WO2009110378A1 (ja) 2009-09-11

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