Cutters – for shaping – Including holder having seat for inserted tool – With separate means to fasten tool to holder
Patent
1998-12-30
2000-05-23
Tsai, Henry W. H.
Cutters, for shaping
Including holder having seat for inserted tool
With separate means to fasten tool to holder
407107, 407109, 82160, 76 80, B23B 2716, B23B 2706
Patent
active
060659068
ABSTRACT:
A slot-widening key for use with insert holders of the kind that includes a blade shaped body having a slot intended to receive an insert. One surface of the slot is defined by an elastically flexible clamping arm for clamping the insert. The key has a shaft with two projections for engaging laterally opening seats in the body and the clamping arm, respectively. One of these two projections is provided on a pivoting link that is pivotably connected with the shaft via a hinge pin. The sum of a first distance between the hinge pin and one of projections, plus a second distance between the hinge pin and the other projection, is larger than the at-rest distance between the seats of the insert holder. Pivoting of the shaft beyond an unstable position of equilibrium thus makes the clamping arm deflect by a predetermined value for widening the slot. The key is self-supporting in the slot-widening position and does not require that the manual force be continuously applied.
REFERENCES:
patent: 4588333 (1986-05-01), Gustafson
patent: 5035545 (1991-07-01), Zinner
patent: 5697271 (1997-12-01), Friedman et al.
patent: 5795109 (1998-08-01), Jonsson et al.
patent: 5799554 (1998-09-01), Friedman et al.
patent: 5803675 (1998-09-01), Von Haas
patent: 5899643 (1999-05-01), Oehler
Sandvik AB
Tsai Henry W. H.
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