Tool for the production of arc-shaped grooves

Details Tool for the production of arc-shaped grooves Tool for the production of arc-shaped grooves

1997-02-20

1999-06-15

Howell, Daniel W.

Gear cutting, milling, or planing

Milling

With cutter holder

407 12, 407 40, 407 61, B23D 700

Patent

active

059115483

ABSTRACT:
To form undercut grooves in a work piece, especially to retain turbine rotor blades, in a first step, the grooves are cut such that the flanks of the grooves have a preliminarily desired shape; then, in a second step, a bell-type countersink is moved radially to cut the desired shape of the flanks of the groove. Countersink cutters for the second step include a plurality of groups of cutting bits or inserts secured to posts on a shell, or bell-type countersink, in accordance with the profile to be cut.

REFERENCES:
patent: 1472960 (1923-11-01), Conklin
patent: 3716900 (1973-02-01), Erkfritz
patent: 3859700 (1975-01-01), Jilbert
patent: 4182587 (1980-01-01), Striegl
patent: 4645384 (1987-02-01), Shimomura et al.
patent: 4790693 (1988-12-01), Koblesky
patent: 4808044 (1989-02-01), Tsujimura et al.
patent: 4993891 (1991-02-01), Kaminiski et al.
patent: 5033916 (1991-07-01), Dunklau
patent: 5176500 (1993-01-01), Henig
patent: 5542792 (1996-08-01), Krueger et al.
patent: 5542794 (1996-08-01), Smith et al.
"Methoden und Maschinen zur Frasbearbeitung von Generator- und Turbinenrotoren" (Methods and Machines for Milling Generator and Turbine Rotors), Ing. (grad.) Siegfried Neumann, Special Publication No. 9 of Kollman Maschinenbau GmbH, 5602 Langenberg/Rhld, (1969).

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