A coupling for frictional attachment of a shaft with a machine member

The invention relates to a coupling for the frictional attachment of a shaft (1) to a machine part (2) surrounding the latter, the coupling having the following features: 1.1 a housing (3) which forms an annular chamber (4); 1.2 a piston axially displaceable in the annular chamber; 1.3 a tapered des...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	ELSNER, ERNST
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING BORING BRAKES CLUTCHES COUPLINGS FOR TRANSMITTING ROTATION ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRANSPORTING TURNING WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a coupling for the frictional attachment of a shaft (1) to a machine part (2) surrounding the latter, the coupling having the following features: 1.1 a housing (3) which forms an annular chamber (4); 1.2 a piston axially displaceable in the annular chamber; 1.3 a tapered design of one circumferential surface of the piston (5) and/or of a surface facing it; 1.4 the annular chamber (4) has pressure connections (6, 7) in its axial end regions; 1.5 lubricant grooves are provided in the region of the circumferential surfaces of the piston; 1.6 the piston (5) has a hole which connects the two circumferential surfaces of the piston to one another. The invention is characterised by the following features: 1.7 a separate lubricant connection (10) is provided, this lubricant connection emerging in the region of one circumferential surface of the piston; 1.8 the lubricant grooves extend from the mouth of the lubricant conduit (11) at the interface between the relevant circumferential surface of the piston (5) and the adjoining surface to a point just ahead of the relevant piston end; 1.9 only a single lubricant groove is provided in each case.