Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1987-04-03
1988-05-31
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51281R, 51144, 5116571, 291568B, B24B 500, B21K 120, B23P 1300
Patent
active
047472375
ABSTRACT:
An improved method and apparatus for manufacturing finished turbine blades from a raw workpiece is disclosed wherein the path of a sanding shoe with respect to the workpiece is controlled as the workpiece 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 workpiece, 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 workpiece in a horizontal direction as the workpiece rotates. The apparatus includes spindle means for rotating the workpiece about the center of rotation, and means for rotating the shoe axis about vertical and horizontal axes.
REFERENCES:
patent: 4686796 (1987-08-01), Giebmanns
Rachuba Maurina
Schmidt Frederick R.
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