背圧絞り法による中実ボスの成形

• 王 志剛

  岐阜大学工学部機械システム工学科

• 森下 圭一

  岐阜大学大学院工学研究科

• 安藤 透

  岐阜大学大学院工学研究科

書誌事項

タイトル別名

• Boss Forming Technology by Bottom Compression Drawing
• ハイアツ シボリ ホウ ニ ヨル チュウ ジツ ボス ノ セイケイ

抄録

Backward extrusion is the most common method of forming bosses within product cases. However, backward extrusion requires a very large forming load, and has the disadvantage of producing dimple defects when forming thin sheets. To overcome this disadvantage, we developed a method of bottom compression drawing to replace backward extrusion. Bottom compression drawing is a technique in which, during normal drawing, back pressure from the counter punch that opposes the drawing punch applies a load on the blank, so that compressive force acts on the bottom face of the blank. Bosses are formed at the same time as the case is formed as a result of this drawing. Backward extrusion and bottom compression drawing were compared using both FEM analysis and experiment in the formation of solid bosses. The results showed that bottom compression drawing could form a piece with about 50% of the forming load used in backward extrusion because the radial compression stress in the bottom material is reduced by the tension in the bottom compression drawing.

収録刊行物

• 塑性と加工

  塑性と加工 53 (616), 429-433, 2012

  一般社団法人 日本塑性加工学会

キーワード

• forging
• sheet metal forming
• backward extrusion
• deep drawing
• solid boss
• sheet forging

詳細情報

• CRID: 1390001206498286464
• NII論文ID: 10030320083
• NII書誌ID: AN00135062
• DOI: 10.9773/sosei.53.429
• ISSN: 18820166
• ISSN: 00381586
• NDL書誌ID: 023801902
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I023801902
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可