Development of CNC incremental forming machine with touch sense and its application to intelligent metal-flow control in sheet metal forming operation

触摸式数控渐进成形机的研制及其在金属板材成形操作智能金属流控制中的应用

• 批准号: 06650796
• 负责人: KITAZAWA Kimiyoshi
• 金额: $ 1.41万
• 依托单位: Shinshu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06650796/
• 关键词: CNC incremental forming machine; Intelligent metal-flow control; Touch sense; Sheet metal forming; Potter's wheel operation; Stretch-expanding; Tool-envelope surface; Small-lot production; 知能化マタルフロー制御; 塑性加工; 板材成形; インクリメンタルフォーミング; メタルフロー制御; 知能

An incremental stretch-expandling is a process in which a sheet metal is stretch-expanded to fit on a tool-envelope surface made by relative motion of a tool around the sheet metal. The incremental forming process seems to be suited to small-lot production from viewpoint of a die-less forming operation, and is also thought to be important in metal-flow control operation. This study presents the development of the CNC incremental forming machine with touch sense in which the motion of the cylindrical tool can be controlled by a computer, made to imitate a figer motion in potter's wheel operation, and its application to intelligent metal-flow control in sheet metal stretch-expanding. Various kinds of axisymmetrical shell components, such as bulygy pot-shaped shell and deep cylindrical shell, were stretch-expanded by the developed machine. Effect of tool path schedules on strain distribution and limit in the shell components was examined using aluminum, aluminum alloy and copper sheets. It is found that the tool path schedules has influence on strain distribution in shell components, and the associated metal-flow has influence on the forming limit and large deflection. Experimental results suggest that the metal flow phenomena can be estimate qualitatively by the touch information between the tool and the sheet metal during the forming operation. Therefore, theproposed process by the developed machine with touch sense is useful for intelligent metal-flow control in sheet metal forming operation.

增量拉伸扩展是一种将金属板拉伸扩展以贴合工具包络表面的过程，该工具包络表面是由工具围绕金属板的相对运动形成的。从无模成形操作的角度来看，渐进成形工艺似乎适合小批量生产，并且也被认为在金属流动控制操作中很重要。本研究介绍了具有触摸感的数控渐进成型机的开发，其中圆柱形工具的运动可以由计算机控制，用于模仿陶轮操作中的手指运动，及其在智能金属流动控制中的应用。金属板材拉伸扩张。利用所研制的机器对各种轴对称壳体部件进行拉伸扩张，例如大锅形壳体和深圆柱壳体。使用铝、铝合金和铜板检查刀具路径方案对壳体部件应变分布和限制的影响。研究发现，刀具路径安排对壳体部件的应变分布有影响，相关的金属流动对成形极限和大挠度有影响。实验结果表明，可以通过成形操作期间工具和金属板之间的接触信息来定性地估计金属流动现象。因此，所开发的具有触摸感的机器所提出的工艺对于金属板材成形操作中的智能金属流控制是有用的。

项目成果

Kimiyoshi KITAZAWA and Hirokatsu OKAKU: "Possibility of CNC incremental stretch-expanding of sheet metal by sheet metal by single-tool-path process" Trans. JASME.Ser.(C). 62. (1996)

Kimiyoshi KITAZAWA 和 Hirokatsu OKAKU：“通过单刀具路径工艺对金属板进行 CNC 增量拉伸扩展的可能性” Trans。

北澤君義・尾角拓勉: "1パス法による薄板のCNCインクリメンタル張出し成形の可能性" 日本機械学会論文集C編. 62(掲載決定). (1996)

Kimiyoshi Kitazawa 和 Takutomu Ozumi：“使用一次性方法进行薄板 CNC 增量拉伸成形的可能性”，日本机械工程师学会汇刊，C 版（1996 年出版）。

北澤君義・林真太郎・山崎純生: "2パス法によるアルミニウム薄板のCNCインクリメンタル球面状張出し成形" 軽金属. 46. (1996)

Kimiyoshi Kitazawa、Shintaro Hayashi、Sumio Yamazaki：“采用两道次法对薄铝板进行 CNC 增量球形拉伸成型”，轻金属 46。（1996 年）

Kimiyoshi KITAZAWA,Shintaro HAYASHI and Sumio YAMAZAKI: "Hemispherical stretch-expanding of aluminum sheet by computerized numerically controlled incremental forming process with two path method" J.Japan Institute of Light Metals. 46. (1996)

Kimiyoshi KITAZAWA、Shintaro HAYASHI 和 Sumio YAMAZAKI：“采用两路径法的计算机数控渐进成形工艺对铝板进行半球形拉伸扩张”，日本轻金属研究所。

北澤君義・尾角拓勉: "1パス法による薄板のCNCインクリメンタル張出し成形の可能性" 日本機械学会論文集C編. 62. (1996)

Kimiyoshi Kitazawa 和 Takutomu Ozumi：“使用一次性方法对薄板进行 CNC 增量拉伸成形的可能性”，日本机械工程师学会汇刊，C 版，62（1996 年）。