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...

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Bibliographic Details
Main Authors IWASA, Aiki, NAKAJIMA, Makoto, KASHIWABARA, Shigetoshi, KATSUMADA, Yasuyuki, KATADA, Kunio, ITO, Masato, SUZUKI, Shinichi, KODAMA, Tokunori, HIRAIWA, Shunsuke, NISHIJIMA, Takeo, KAWAGUCHI, Akihumi
Format Patent
LanguageEnglish
French
German
Published 11.08.2021
Subjects
BLASTING
BRAKES
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 MATERIAL WITH METALLIC MATERIAL
COATING METALLIC MATERIAL
COUPLINGS FOR TRANSMITTING ROTATION
DIFFUSION TREATMENT OF METALLIC MATERIAL
ENGINEERING ELEMENTS AND UNITS
FUELS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL
LIGHTING
LUBRICANTS
LUBRICATING COMPOSITIONS
MECHANICAL ENGINEERING
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
TECHNICAL GASES CONTAINING CARBON MONOXIDE
THERMAL INSULATION IN GENERAL
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
WEAPONS
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Summary: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.
Bibliography:Application Number: EP20190807569