Patent ID: 7761992

Claim:
A process for machining axial blade slots in a turbine disk for an engine comprising the steps of: providing a turbine disk; forming a roughened slot having a plurality of joined rectangular areas in said turbine disk; said forming step comprising forming a first rectangular area in said turbine disk and a second rectangular area abutting said first rectangular area; said forming step comprising forming said first rectangular area using a first grinding wheel to have a first wall and a second wall parallel to said first wall; said forming step further comprising forming said second rectangular area using a second grinding wheel different from said first grinding wheel to have a third wall joined to said first wall of said first rectangular area by a first surface perpendicular to said first and third walls; said forming step further comprising forming said second rectangular area to have a fourth wall joined to said second wall of said first rectangular area by a second surface perpendicular to said second and fourth walls; and machining the roughened slot to a finished slot.