To provide a repair-processing technique for casting defect in an aluminum alloy casting with which the processing time is shortened and this productivity is remarkably improved.
A robot hand provided with a bar-like tool 9 and a CCD camera rotation-driven around the axis, is inserted into the inner part of a cylinder bore 2 and the inner peripheral surface 20 of the bore is picked up while shifting downward and whether the casting defect 3, such as blow hole, exists or not, and this position, is specified. To the casting defect 3, specified at this position, the rotated bar-like tool 9 is pushed to this position at this time, to plastically fluid this defect while semi-melting with the friction heat. Thus, this casting defect 3 is eliminated by burying the plastically fluidized material M into the casting defect 3.
TAKAHASHI HIDEO
OGINO TAKASHI
Hiromichi Kobayashi
Tomioka Kiyoshi
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