Limit strains for CNC incremental stretch-expanding of aluminum sheets.

• KITAZAWA Kimiyoshi

  Faculty of Engineering, Shinshu University

Bibliographic Information

Other Title

• １０５０アルミニウム薄板のＣＮＣインクリメンタル張出成形の成形限界
• 1050 アルミニウム ウスイタ ノ CNC インクリメンタル ハリダシ セイ

Abstract

A new incremental process in which a tool deforms an aluminum blank to its circular tool-envelope surface was employed in order to measure the incremental forming limit. The forming limits were determined by the occurrence of rupture in the direction of tool travel. The limit strains for incremental forming were strongly dependent on the value of incremental tool-path-pitch Δh; the limit strains increased with decreasing Δh. Similar effects of Δh on the limit strain were also obtained under other experimental conditions. Thus, the incremental tool-path-pitch Δh had a major influence on the forming limit. Furthermore, the forming limits were controlled by the history of incremental strain, i.e., strain wave-form, strain range and number of strain cycles.

Journal

• Journal of Japan Institute of Light Metals

  Journal of Japan Institute of Light Metals 47 (3), 145-150, 1997

  The Japan Institute of Light Metals

Keywords

• sheet metal forming
• limit strain
• CNC incremental stretch-expanding
• strain history
• tool-path-pitch

Details

• CRID: 1390282681312322048
• NII Article ID: 10003795120
• NII Article ID: 10004010798
• NII Book ID: AN00069773
• DOI: 10.2464/jilm.47.145
• ISSN: 18808018
• ISSN: 04515994
• NDL BIB ID: 4172735
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4172735
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed