Abstract: Electrochemical machining ( ECM) is used as one of t he main machining methods to produce super-thintw ist turbine blades, because of their complex shape and high accuracy requir ement. This paper focuses on t he optimizat ion of ECM cathode feed direction and blade fixture position in machining this type of blade. Moreover , thispaper also analy zes the districut ion of space angle betw een cathode feed direction and no rmal direction of t he bladeshape in detail. All the above prov ide the solid foundation fo r ECM of turbine blades.

Key words: electrochemical machining, feed direction, fixture position, optimization