HOLE SURFACE MACHINING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a hole surface machining method for efficiently applying surface machining to a hole formed in a workpiece. SOLUTION: The method is used for machining the inside face 311 of a main hole 31 by jetting out a jet water flow 2 having prescribed water pressure to the inside of the main hole 31 bored in the workpiece 3. The jet water flow 2 is a two-layered jet water flow 2 composed of a high-pressure water flow 21 and a low-pressure water flow 22 surrounding the high-pressure water flow 21 and contains cavitation bubbles 23. A flow control jig 6 having a reflection face 61 for reflecting the high-pressure water flow 21 is arranged inside the main hole 31. A clearance between the flow control jig 6 and the inside face 311 of the main hole 31 is set to≤400μm. The jet water flow 2 hits the inside face 311 of the main hole 31 while the high-pressure water flow 21 is jetted out to the reflection face 61 so as to be reflected with the reflection face 61. COPYRIGHT: (C)2007,JPO&INPIT