DEVICE FOR HOLDING CORE OF IMPELLER

PURPOSE:To utilize a centrifugal force so as to surely hold a core even during high-speed rotation by forming a notch in the insertion hole of a disk which is fitted into a stepped portion, and also inserting a circular plate between a recessed portion formed within the notch and the stepped shaft p...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	EZAKI HITOAKI, FURUKAWA TOYOAKI, MATSUMOTO IWAO
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL ENGINE PLANTS IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To utilize a centrifugal force so as to surely hold a core even during high-speed rotation by forming a notch in the insertion hole of a disk which is fitted into a stepped portion, and also inserting a circular plate between a recessed portion formed within the notch and the stepped shaft portion, the circular plate being divided into plural portions in its circumferential direction. CONSTITUTION:On the inner peripheral face of a disk 4, a proper number of notches 10 each extending in the circumferential direction are formed opposite to the stepped shaft portion 2 of a rotary shaft 1. Within each of the notches 10, a recessed portion 11 is formed in a position separate from the center of the width of the notch and along the circumferential direction. A predetermined distance is provided between the tip of the recessed portion 11 and the stepped shaft portion 2 so that a circular plate 12 divided into four portions in its circumferential direction is inserted into the notch 10 in such a manner as surrounding the stepped shaft portion 2. A rotor 3 thus comprising the circular plate 12 inserted into the notch 10 is fitted into the stepped shaft portion 2 and also has its end fixed by locking of a nut 5.