Cutters – for shaping – Including holder having seat for inserted tool – With separate means to fasten tool to holder
Patent
1997-12-09
1999-08-31
Pitts, Andrea L.
Cutters, for shaping
Including holder having seat for inserted tool
With separate means to fasten tool to holder
407107, 407111, B23B 2716
Patent
active
059444576
ABSTRACT:
A toolholder forms a seat in which a cutting insert is seated. The insert is held in place by a clamp having front and rear portions. The front portion engages within a center hole of the insert, and the rear portion engages an inclined surface of the toolholder so that the clamp is pushed downwardly and rearwardly when attached by a screw. A coil spring surrounds the screw and is compressed between the clamp and the toolholder to bias the clamp upwardly. An upper end of the spring is disposed in a bore of the clamp which is inclined relative to the screw, whereby the spring abuts a rear portion of a wall of the bore to bias the clamp rearwardly as well as upwardly.
REFERENCES:
patent: 3314126 (1967-04-01), Stier
patent: 5035544 (1991-07-01), Ikenaga et al.
patent: 5100268 (1992-03-01), Nakayama et al.
patent: 5586844 (1996-12-01), Nyman
Pitts Andrea L.
Sandvik Aktiebolag
Tsai Henry W. H.
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