| 摘要 |
PROBLEM TO BE SOLVED: To integrally connect an internal mechanism to a compressor casing with no clearance while preventing occurrence of spattering as well as to avoid distortion of a compressing mechanism and the casing. SOLUTION: A recessively sunk part 35 is formed on an outer peripheral surface of a cylinder 31 at the time of integrally assembling the cylinder 31 of a compressor in a casing 2. A part of the casing 2 is plastically deformed along the recessively sunk part 35 by pressing a caulking punch 63 rotating toward the recessively sunk part 35 from the surface side of the casing 2. The caulking punch 63 is roughly columnar, and its center of rotation is eccentric against a central axis of the caulking punch 63. Weld metal is buried by MAG welding against a recessed part 21 formed on a surface of the casing 2 after plastic deformation.
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