Gear cutting – milling – or planing – Milling – Including means to adustably position cutter
Patent
1983-06-07
1985-08-27
Briggs, William R.
Gear cutting, milling, or planing
Milling
Including means to adustably position cutter
409232, 409268, 409282, B23D 3714
Patent
active
045375380
ABSTRACT:
An apparatus for machining turbine blades of a radial entry type to form in each blade a groove of a Christmas tree shape for mounting the blade on a turbine rotor including a main spindle, a rotary disk supported on the main spindle, and a plurality of cutters supported on the rotary disk through a cutter holder in positions forming an arc on the surface of the disk. The cutters are located such that those of a configuration suitable for use in giving coarse finishes, those of a configurator suitable for giving middling finishes and those of a configuration suitable for giving final fine finishes are arranged successively in positions forming an arc on the disk. A blade to be machined is supported in a position in which a groove thereof crosses paths of movement of the cutters as the disk is rotated. Thus, the blade can be machined to give fine finishes to the groove.
REFERENCES:
patent: 2113554 (1938-04-01), Johnson
patent: 2123777 (1938-07-01), Hart
patent: 3823643 (1974-07-01), Feucht et al.
patent: 3889573 (1975-06-01), Girardi
patent: 4038732 (1977-08-01), Hunkeler
patent: 4041590 (1977-08-01), Schibrowski
patent: 4294568 (1981-10-01), Lipowsky et al.
patent: 4382731 (1983-05-01), Rigdon
Kuroume Hirotsugu
Mitamura Sachio
Briggs William R.
Hitachi , Ltd.
Webb Glenn L.
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