BORING HEAD Russian patent published in 2010 - IPC B23B29/34 

FIELD: technological processes.

SUBSTANCE: head comprises holder in the form of micrometric screw, at one end of which there is seat provided for cutting plate, and on the other end there is key arranged, intended for interaction with key slot of boring mandrel, limb installed in bushing with vernier, fixed on mandrel, and rigidly connected to one of two nuts coupled with specified screw, connected by elastic element formed by radial slots on limb generatrix, fixed in bushing by stop ring in groove with support surface for stop ring on limb generatrix. Stop ring is arranged in the form of plate spring interacting with support surface of groove, and one of nuts is cut in axial direction, besides axial slot from cut crosses specified groove. Support surface of groove may be arranged as inclined. Axial slots from nut cut may be connected to radial slots. Flats may be arranged on limb generatrix from its end to groove. At the end of limb there might be seat arranged for plate spring.

EFFECT: reduced dimensions and simplified design.

5 cl, 13 dwg