Chuck securing irregular work - has hydraulic rams supplied by common pressurised reservoir and shut off individually

摘要

The chuck uses a number of clamping rams (2). These are hydraulic, so as to form either a mounting or a chuck, and are connected to a common reservoir. - A mechanism (14) generates central pressure in the latter, moving all the ram jaws (7) against the work (15), which is centred by a mandrel etc. The connections of the rams to the reservoir can be individually shut off. One or more rams can have a boss (22) thrust into its hydraulic chamber to increase the pressure.