Cutters – for shaping – Including holder having seat for inserted tool – With separate means to fasten tool seat to holder
Patent
1992-03-27
1994-05-03
Bishop, Steven C.
Cutters, for shaping
Including holder having seat for inserted tool
With separate means to fasten tool seat to holder
407103, 407107, 407113, 407117, B23B 2716
Patent
active
053081978
ABSTRACT:
A machining apparatus is described, of the type that includes a metal cutting insert which is held by an insert holder apparatus, wherein the insert can be installed in a plurality of different positions to use different ones of the cutting edges, which facilitates mounting of the insert. The holder apparatus includes a holder bar (16, FIG. 1) and a pocket member (14) that mounts on the bar and that holds an insert (12) with cutting edges (22). The pocket member has a first precision flat surface (90) that mounts facewise against a flat surface on the bar, and the pocket member has a second precision flat surface (92) that mounts facewise against a surface on the insert. The first and second flat surfaces on the pocket member can be parallel, or can be angled slightly from each other, to control orientation of the insert. The insert has a mount portion (32, FIG. 2 ) with a periphery lying on the sides of an imaginary polygon such as a square, and has a plurality of arms (51-54) projecting radially with respect to the insert axis (30), from a plurality of corners of the imaginary polygon. The mount portion forms locating sides (41-44) at the sides of the imaginary polygon, with a pair of such locating sides bearing against a pair of positioning sides (76, 78) of the pocket member to locate the insert with precision on the pocket member.
REFERENCES:
patent: 4169690 (1979-10-01), Kendra
patent: 4695208 (1987-09-01), Yankoff
patent: 5004379 (1991-04-01), Little
patent: 5032050 (1991-07-01), Niebauer et al.
Bishop Steven C.
Freilich Arthur
Hornbaker Robert D.
Rosen Leon D.
Threading Systems, Inc.
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