Improvement of Forming Limit in Conical Nosing of Thin Walled Tubes

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概要

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• To improve the nosing limit of thin walled aluminum tubes by conical dies, the effects are examined of the circular curved part at die inlet, the outer guide of cylindrical part, and the local annealing in the nose forming zone. The circular curved part at the die inlet is effective in nosing with large die semi-cone angle. The local annealing method prevents not only buckling at cylindrical zone but also wrinkling in nose forming zone, and is a useful means to improve the nosing limit. Furthermore, a guide line for die design is made on the raidus of curvature of circular curved part at die inlet and the optimum length of local annealing at which nosing limit reaches its maximum.

• 一般社団法人日本機械学会の論文

著者

• Manabe Kenichi

  Faculty Of Technology Tokyo Metropolitan University

• NISHIMURA Hisashi

  Faculty of Technology, Tokyo Metropolitan University

• Nishimura Hisashi

  Faculty Of Technology Tokyo Metropolitan University

関連論文

• Improvement of Forming Limit in Conical Nosing of Thin Walled Tubes

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