Patent ID: 9248506
Filing Date: 2016-02-02
CPC Classification: B23B,B23Q,Y10T

Claim Text:
1. A tool shank, comprising: a taper member having a conic shape having a conic outer surface extended along an axis in an axial direction, the conic outer surface having a top section of a smaller diameter and a bottom section of a larger diameter, the conic outer surface configured to be received in a corresponding tapered socket of a tool spindle when the tool shank is clamped in the tool spindle; a flange member beneath the bottom section of the conic outer surface of the taper member; a holder member, configured for receiving a tool therein, extended downward from a bottom side of the flange member along the axial direction; a plurality of slits configured at intervals around the bottom section of the conic outer surface of the taper member surrounding the axial direction; a plurality of bulges, each defined by a respective one of the slits, on the bottom section of the conic outer surface of the taper member, which bulges are tensioned in a manner so as to be biased radially outward; and a plurality of flexible members, wherein each of the slits has a respective one of the plurality of flexible members provided therein; wherein each of the slits is formed from two slit segments that intersect to form a V shape.