Abstract: he abrasive belt precision grinding for a 700mm long twist balde surface is realized.Through analysis and discussion of some related references on surface cutter-position calculating methods,it is proposed that the cutter-location paths of twist blade surface given by discrete points for fulfilling line-contact machining in width rows should be determined by use of a saddle surface method.

Key words: cutters-location (position), computation, twisting turbine blades