Spinning thickening forming method and spinning thickening forming apparatus
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsYuto Sakane, Yoshihide Imamura, Kohei Mikami, Hayato Iwasaki, Hideyuki Ogishi, Hiroshi Kitano
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Abstract
A spinning thickening forming method is a method of, while rotating a plate including a center portion fixed to a fixing jig, increasing a thickness of a peripheral portion of the plate. Specifically, while locally heating the peripheral portion of the plate such that at least a portion of the plate which is adjacent to the fixing jig maintains stiffness, a forming roller is pressed against the peripheral portion of the plate to compress the peripheral portion in at least a direction perpendicular to a thickness direction of the peripheral portion.
Claims8
A spinning thickening forming method of, while rotating a plate including a center portion fixed to a fixing jig, increasing a thickness of a peripheral portion of the plate, the method comprising
- while locally heating the peripheral portion of the plate such that at least an overhanging portion of the plate which is adjacent to the fixing jig maintains stiffness during an entire thickening process of the peripheral portion, wherein the overhanging portion extends from an area contacting the fixing jig toward the peripheral portion, pressing a forming roller against the peripheral portion of the plate to compress the peripheral portion in at least a direction perpendicular to a thickness direction of the peripheral portion and thereby increase the thickness of the peripheral portion at a position away from the fixing jig, wherein
- the entire thickening process of the peripheral portion is a period in which the forming roller is in contact with the peripheral portion and the thickness of the peripheral portion is increased, and
- the pressing is performed in at least a part of a period of the locally heating of the peripheral portion of the plate.
A spinning thickening forming apparatus comprising:
- a fixing jig to which a center portion of a plate is fixed;
- a rotating shaft to which the fixing jig is attached;
- a heater configured to locally heat a peripheral portion of the plate;
- and
- a forming roller configured to be pressed against the heated peripheral portion of the plate in a pressing direction inclined relative to a direction perpendicular to a thickness direction of the peripheral portion, to compress the peripheral portion in at least the direction perpendicular to the thickness direction of the peripheral portion, wherein
- the forming roller includes:
- a cylindrical pressing surface having a first pressing end and a second pressing end, the cylindrical pressing surface extending in a rotation axis direction of the forming roller;
- and
- a guide surface having a first guide end and a second guide end, the guide surface rising from the first pressing end of the pressing surface so as to form an obtuse angle between the first guide end and the first pressing end, and the second pressing end and the second guide end being free ends.
Dependencies are inferred from the claim text.