BOHREINHEIT

摘要

PCT No. PCT/DE80/00074 Sec. 371 Date Jan. 30, 1981 Sec. 102(e) Date Jan. 30, 1981 PCT Filed May 22, 1980 PCT Pub. No. WO80/02660 PCT Pub. Date Dec. 11, 1980.A boring unit comprises a rotary spindle and a tool support mounted therein. The tool supports includes a rearwardly extending headbolt and a rearwardly extending supporting arm. The supporting arm engages an inclined wedge surface, the latter being movable by a connecting rod so that the wedge surface imparts rotary movement to the supporting arm and to the tool support about an axis of adjustment which is oriented perpendicular to the axis of rotation of the spindle, thereby moving the tool in a radial direction. The headbolt of the tool support is retained within a chucking cage. The chucking cage is movable to a position for releasing the headbolt by means of the movable connecting rod.