BALL SCREW

A ball screw in the present invention includes a nut (1) having a spiral groove formed in an inner peripheral surface; a screw shaft (2) having a spiral groove formed in an outer peripheral surface; balls arranged between a raceway formed by the spiral groove of the nut and the spiral groove of the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SAKAI, Motoshi, HASHIMOTO, Koji
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A ball screw in the present invention includes a nut (1) having a spiral groove formed in an inner peripheral surface; a screw shaft (2) having a spiral groove formed in an outer peripheral surface; balls arranged between a raceway formed by the spiral groove of the nut and the spiral groove of the screw shaft; and a ball return passage for returning the balls from an end point of the raceway to a start point. The nut (1) includes a protruding portion (13) protruding from an axial end surface, and the ball return passage is a recessed portion formed in the inner peripheral surface of the nut. Deviation of the center of gravity of the nut (1) from a rotational center line caused by the protruding portion (13) is made smaller by the configuration of the recessed portion.