UNIDIRECTIONAL ABRASIVE FLOW MACHINING

摘要

An abrasive flow machining and polishing apparatus is provided having a hydraulically actuated reciprocating, piston (42) and a extrusion medium chamber (10) adapted to receive and extrude a visco elastic dispersion of an abrasive unidirectionally across the internal surfaces of a workpiece (40) having internal passages (4 1) formed therein to perform abrasive work on said surfaces. A fixture (24) directs Ho w of the viscoelastic abrasive dispersion from said hydraulic extrusion medium chambe r (10) into the inlet of internal passages (41) in a workpiece (40), while a collector (30) is set to gravitrimetrically collect flow of the viscoelastic abrasive dispersion as i t extrudes form an outlet of the internal passages and drops into the collector. The extrusi on medium chamber (10) is provided with an access port (16) to periodically receive gravimetric return flow of the viscoelastic abrasive dispersion from the collector (30) into extrusion medium chamber (10).