| 摘要 |
PROBLEM TO BE SOLVED: To provide a spinning for molding a product having no thin portion. SOLUTION: The spinning tapering a rotating work W by abutting a roller R thereon to mould the work W into a predetermined shape includes: a first step for moving the roller R in the other end along an axis O direction with the roller R pressed to the work W in a center axis O side; a second step for stopping the roller R closing to a specific portion P of the work W, for separating the roller R from the work W, and for forming a protuberance 97 protruding to the outside of a diameter direction at the specific portion P of the work W; and a third step for moving the roller R along the axis O with the roller R pressed to the work W in the center axis O side and compressing the protuberance 97, which increases the thickness of the specific portion P of the work W. COPYRIGHT: (C)2011,JPO&INPIT
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