| 摘要 |
PROBLEM TO BE SOLVED: To provide a swaging apparatus, in which a spindle head rotating together with the rotation of a main shaft is supported through swaging rollers arranged on the inner peripheral surface of the outer ring and in the spindle head, the plurality of hammers fitting hammer rollers abutted on the swaging rollers at the outside and dies pressed with these hammers are provided and this swaging apparatus presses the outer peripheral surface of a workpiece with the plurality of dies, and a material being difficult to work, such as magnesium alloy, can be worked without developing the crack. SOLUTION: In the inner part of the main shaft 13, an oil supplying pipe 24 is arranged and heated lubricating oil B from this oil supplying pipe 24 is sprayed onto the workpiece A and the dies 1,1-, from an injecting nozzle 26 at the tip part. COPYRIGHT: (C)2007,JPO&INPIT
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