BULGING APPARATUS USING RADIALLY BULGING MECHANICAL MEANS AND BULGING METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a bulging apparatus and a bulging method which enable a high bulged part to be formed without generating wrinkles in the periphery of the bulged part when bulging a material to be worked. SOLUTION: The bulging apparatus is provided with a radially bulging mechanical means for radially bulging the material to be worked by directly pressing it and an axial pushing means for pressing the material to be worked against in the axial direction. COPYRIGHT: (C)2006,JPO&NCIPI