| 摘要 |
1. A holding chuck for a tool on a machine-tool, of the type comprising a body (2, 3, 15) in the interior of which vice jaws (6, 19) are accommodated, provided with treaded portions (12, 22) and capable of actuation by a screw (23) or a nut (10), characterized in that it includes a washer (26, 28) made of a hard material with a polytetrafluorethylene base that has a high coefficient of friction and is located between the body (2, 15) and the means of actuation (10, 23) of the vice jaws. |
