Hemispherical shoe and method of manufacturing the same

The invention relates to a hemispherical shoe. The hemispherical shoe formed of a projected hemispherical surface (2) and a flat-shaped end surface (3) in a roughly hemispherical shape and comprises, on the hemispherical surface, a slidable contact part (6) coming into slidable contact with a hemisp...

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Bibliographische Detailangaben
1. Verfasser:	KANEMITSU HIROSHI,HATTA MASAHARU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SOLDERING OR UNSOLDERING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The invention relates to a hemispherical shoe. The hemispherical shoe formed of a projected hemispherical surface (2) and a flat-shaped end surface (3) in a roughly hemispherical shape and comprises, on the hemispherical surface, a slidable contact part (6) coming into slidable contact with a hemispherical recessed part and non-slidable contact surfaces (7) and (8) not coming into slidable contact with the recessed part. In the method of manufacturing the hemispherical shoe, after a hemispherical raw material having a hemispherical surface along the recessed part is molded, the surface of the hemispherical surface which forms a portion to be the slidable contact surface is hardened, the hardened portion is swelled more than the original surface of the hemispherical surface to form the slidable contact surface on the surface of the swelled part and to leave the other portions of the hemispherical surface in non-slidable contact surfaces. Since the width of the slidable contact surface can be easily set by controlling the width of the hardened portion, a bearing pressure is increased by reducing the width of the slidable contact surface, and the risk of seizure can be lowered.