Device and method for shaping an arcuate edge

Details Device and method for shaping an arcuate edge Device and method for shaping an arcuate edge

1986-04-21

1988-03-01

Weidenfeld, Gil

Gear cutting, milling, or planing

Planing

Process

30310, 83869, 409303, 409313, 409348, B23D 502

Patent

active

047282339

ABSTRACT:
A shaping or cutting device for accurately and incrementally shaping the arcuate edges of the teeth of packing segments used as seals between turbine stage diaphragms. The device assures that the reshaped packing teeth provide uniform clearance by the seals between stage diaphragms thereby maintaining efficiency between the higher to lower pressure stages of the turbine. The device includes a positioning jig to hold the packing segments. A pivoting cutting tool is itself vertically and horizontally positionable relative to the jig. By relatively positioning the jig and cutting tool, cutting can be incrementally adjusted to uniformly shape each arcuate edge of packing teeth.

REFERENCES:
patent: 330261 (1885-11-01), Paul
patent: 529428 (1894-11-01), Thomlinson et al.
patent: 1994316 (1935-03-01), Linn
patent: 3921480 (1975-11-01), Ball
patent: 4050336 (1977-09-01), Stubbings

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