Blade tips grinding method for use in compressor drum of turbo-engine, involves grinding blade tips of drum parts by assembled blades with drum rotational speed, which is increased with respect to centrifugal tip grinding

摘要

The method involves connecting blade integrated disk drum parts together corresponding to assembly condition in a turbo-engine. An assembled compressor drum is brought into a high speed grinding device formed for centrifugal tip grinding to selectively permit tip grinding with reduced speed. An integral drum part of the drum parts is grinded in a grinding device with the reduced speed in an inert gas atmosphere or in vacuum, and blade tips of the drum parts are grinded by assembled blades with a drum rotational speed, which is increased with respect to the centrifugal tip grinding.