Spannfutter für Werkzeuge

1,192,489. Chucks. R. C. MEYER. 24 April, 1968 [27 April, 1967], No. 19255/68. Heading B3B. A chuck for holding a tool 27 and for mounting on a machine spindle shank 15 comprises means for pivoting the tool about two mutually perpendicular axes and means for laterally moving the tool to enable the axis of the tool to be adjusted to be coincident with the axis of the spindle. A shift plate 11 is assembled within a casing 13 and a face plate 10 screwed to the casing, the shift plate being laterally movable within the casing 13 by means of adjusting screws 25. A tilt plate 12 is attached to the shift plate 11 by means of a spherical pivot and clamp 32, 34 and comprises two adjusting screws 35, two spring bearing elements 37 and two lock screws 36. Clamped within the tilt plate 12 is an adapter 28 in which the tool 27 is clamped. The spindle shank 15 and pivot and clamp 32, 34 may be hollow to allow a coolant to pass through the spindle and chuck on to the tool and workpiece. The tool 27 may be an electrode of an electric spark discharge machine.