BORING HEAD Russian patent published in 2006 - IPC B23B29/34 

FIELD: metal working, finish working of holes.

SUBSTANCE: head includes body with vernier formed on its generatrix surface and screw. Eccentric is mounted inside body with possibility of rotation and it is rigidly coupled with limb. Cutter holder is mounted inside eccentric with possibility of radial motion along bar relative to body. In order to improve rigidity and to increase useful life period after adjustment, boring head includes elastic member and stop; screw is jointly mounted. On surface of holder there are cutout and dent. Elastic member engages with said dent and it is rigidly coupled with stop. The last engages with cutout and with jointly mounted screw.

EFFECT: increased useful life period, improved rigidity of boring head.

5 dwg