| 摘要 |
PROBLEM TO BE SOLVED: To equalize the height of fracture surfaces after removing protrusions, thereby reducing waste of flame spraying amount when a flame-spray film is thereafter formed. SOLUTION: A method of machining a rough surface includes the helical groove forming step of forming valley sections 19 as helical grooves in an inner surface of a round hole 5 by using a cutting tool 11; and the protrusion breaking step of breaking and removing distal end portions of mountain sections 29 generated due to the helical groove formation using the cutting tool 11 by relatively moving them along these helical grooves by using a breaking tool 13. COPYRIGHT: (C)2010,JPO&INPIT |
