Machinetool chuck with grip and shrink sleeves use electrically insulated shrink sleeve as coil with pinned end rings carrying accessible sleeve end contact surfaces for power cables.

摘要

The shrink sleeve (6) is electrically insulated as placed on the grip sleeve (4) and has at its opposed ends freely accessible surfaces (9) to contact sourced (19) power cable (18) contact elements (15). The shrink sleeve (6) presents over its main length a single or multiple turn coil (10) terminating at both ends (8) in rings (11) carrying the contact surfaces (9). The rings are nontwistably pinned (12) at the sleeve (6) ends. In a variant, the shrink sleeve (6) presents a continuous sleeve whose two ends are prevented from relative rotation.