Patent ID: 7448834

Claim:
A tool clamping device, comprising: a spindle insert extending along a longitudinal axis and having a holder therein; an adapter received within said holder along said longitudinal axis, said adapter having a conical end piece and an annular shoulder; a toolholder coupled to said adapter, with said adapter being between said spindle insert and said toolholder; first and second fastening screws releasably securing said adapter in said holder, said screws extending diametrically opposite one another relative to said longitudinal axis and being transverse to said longitudinal axis, inner ends of said screws engaging said annular shoulder to force and retain said conical end piece along said longitudinal axis into said holder as said screws are threaded radially inwardly toward said longitudinal axis; and a torque transmission positively connecting said spindle insert and said adapter transmitting torque forces therebetween.