HELICAL DRILLS POINTING DEVICE Russian patent published in 2006 - IPC B24B3/24 

FIELD: machine engineering, pointing of cutting tools.

SUBSTANCE: device includes base supporting spring-loaded carriage engaged with cam-follower and having self-aligning drill holder that is mounted with possibility of reciprocation motion and rotation. In order to enlarge manufacturing possibilities, device is provided with rotary fork, additional cam-follower and unit for controlling mounting and pointing of drills and designed for mounting in rocking table of small-size pointing machine tool; said table allows to after-point angle of cross edge. Self-aligning drill holder may be mounted with inclination by fixed angles in said rotary fork inclined by 45° relative to vertical plane. Said fork may move along rotation axis of abrasive cup of small-size pointing machine tool for pointing (according to allowance value) small- and large-diameter drills of right and left rotation at respective engagement of carriage with one of two cam-followers corresponding to angles of main cutting edges of drill for working different-hardness materials.

EFFECT: enlarged manufacturing possibilities of drill.

5 dwg