Sliding spline shaft device

A sliding spline shaft device of the present invention includes a male spline and a female spline that is fitted to the male spline in an axially slidable manner, and at least one of the splines has a surface processed layer. The surface processed layer includes an undercoat layer, an intermediate l...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Kodama, Tokunori, Nishijima, Takeo, Nakajima, Makoto, Kashiwabara, Shigetoshi, Hiraiwa, Shunsuke, Katsumada, Yasuyuki, Ito, Masato, Iwasa, Aiki, Kawaguchi, Akihumi, Suzuki, Shinichi, Katada, Kunio
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES ALLOYS BLASTING BRAKES CHEMICAL PAINT OR INK REMOVERS CHEMICAL SURFACE TREATMENT CHEMISTRY CLUTCHES COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CORRECTING FLUIDS COUPLINGS FOR TRANSMITTING ROTATION DIFFUSION TREATMENT OF METALLIC MATERIAL DYES ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS FILLING PASTES FUELS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL INKS LIGHTING LUBRICANTS LUBRICATING COMPOSITIONS MECHANICAL ENGINEERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PEAT PETROLEUM, GAS OR COKE INDUSTRIES POLISHES SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TECHNICAL GASES CONTAINING CARBON MONOXIDE THERMAL INSULATION IN GENERAL TREATMENT OF ALLOYS OR NON-FERROUS METALS USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION USE OF MATERIALS THEREFOR WEAPONS WOODSTAINS
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Beschreibung
Zusammenfassung:	A sliding spline shaft device of the present invention includes a male spline and a female spline that is fitted to the male spline in an axially slidable manner, and at least one of the splines has a surface processed layer. The surface processed layer includes an undercoat layer, an intermediate layer containing phosphate, and a topcoat layer containing solid lubricant, in this order. The undercoat layer contains iron nitride and/or iron carbide. Thus, the surface of a base material has high hardness. As a result, microscopic deformation of the sliding surface is reduced, and increase in a real contact area is suppressed, whereby stick-slip is prevented.