Method and apparatus for improved polishing of turbine blades

Details Method and apparatus for improved polishing of turbine blades Method and apparatus for improved polishing of turbine blades

1986-06-20

1987-08-18

Olszewski, Robert P.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

5116571, 51281R, 51328, 291568B, B24B 500, B21K 120, B23P 1300

Patent

active

046867961

ABSTRACT:
An improved method and apparatus for polishing turbine blades is disclosed wherein the path of a sanding shoe with respect to the turbine blade is controlled as the turbine blade is rotated on a spindle. The method involves plotting the profiles of the turbine blade in a number of planes, defining the profiles as a series of circle segments each having a center and an angular length, choosing an arbitrary center of rotation of the turbine blade, measuring the distances from the center of rotation to each of the circle segment centers, plotting the hypothetical path of the center of rotation about each circle segment center by each corresponding angular length, and using the derived path of the center of rotation to control the movement of the shoe in a vertical direction and the turbine blade in a horizontal direction as the turbine blade rotates. The apparatus includes spindle means for rotating the turbine blade about a center of rotation, and means for rotating the shoe axis about vertical and horizontal axes.

REFERENCES:
patent: 2722788 (1955-11-01), Thiel
patent: 3685219 (1972-08-01), Palmenberg
patent: 3925937 (1975-12-01), Steven et al.
patent: 4031669 (1977-06-01), Koide et al.
patent: 4141127 (1979-02-01), Cretella et al.
patent: 4285108 (1981-08-01), Arrigoni
patent: 4489469 (1984-12-01), Hall
patent: 4526747 (1985-06-01), Schimmel et al.

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