A ball screw

According to the present invention, thereis provided a ball screw (1) used under agitated oil lubrication comprising: a screw shaft (2) formed with a helical screw groove (2a) on its outer circumferential surface; a nut (3) adapted to be fitted on the screw shaft (2) and formed with a helical screw...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	KAZUNO, KEISUKE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MECHANICAL ENGINEERING 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 THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	According to the present invention, thereis provided a ball screw (1) used under agitated oil lubrication comprising: a screw shaft (2) formed with a helical screw groove (2a) on its outer circumferential surface; a nut (3) adapted to be fitted on the screw shaft (2) and formed with a helical screw groove (3a) on its inner circumferential surface; a plurality of balls (4) contained in a rolling passage formed by oppositely arranged screw grooves (2a and 3a); and a bridge member (5) adapted to be fitted in a bridge window (6) formed through a barrel wall of the nut (3) and formed with a connecting groove (5a) bypassing the rolling passage to a radially outward circumferential passage; characterized in that a notch is formed in the bridge member (5) so as to intercommunicate the outer and inner circumferential portions of the nut (3).