权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Development of Intelligent Incremental Forming Machine and Its Application to Metal-Flow Controlling of Sheet Metal Stretching

智能增量成形机的研制及其在板料拉伸金属流量控制中的应用

基本信息

批准号：
09650134
负责人：
KITAZAWA Kimiyoshi
金额：
$ 2.5万
依托单位：
Shinshu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

项目摘要

An incremental forming is a process in which a sheet metal is stretched 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. Although the incremental forming posses large degrees of freedom of tool motion, an algorithm for estimating automatically an adequate tool-path schedule has not been illuminated. So as to overcome the need for estimating the adequate tool-path schedules, this study presents the development of an intelligent incremental forming machine and the proposal of an algorithm for deducing the tool-path schedule.The developed machine is equipped with a laser profilometry and a touch sense for on-line measurement of the shapes of sheet metal products. The proposed algorithm can deduce an tool-path schedule from the measured shapes of sheet metal products, by applying the techniques of neural networks. Experimental results show that the proposed algorithm is capable of deducing automatically an adequate tool-path schedule by which unfavorable deformation modes, such as wrinkles, can be avoided. Furthermore, this approach is applicable to on-line adjustments of the shapes of sheet metal products during the finishing process.

渐进成形是一种金属板被拉伸以配合在工具包络表面上的工艺，该工具包络表面是通过工具围绕金属板的相对运动而形成的。从无模成形操作的观点来看，渐进成形工艺似乎适合于小批量生产，并且在金属流动控制操作中也被认为是重要的。虽然渐进成形具有很大的刀具运动自由度，但自动估计刀具轨迹的算法还没有阐明。为了克服需要估计足够的刀具路径计划，本研究提出了一种智能增量成形机的开发和算法的建议推导刀具路径计划。开发的机器配备了激光轮廓测量和触摸传感器的形状的金属板产品的在线测量。该算法利用神经网络技术，从测量的板料形状中推导出刀具路径规划。实验结果表明，该算法能够自动推导出一个适当的刀具路径计划，通过该计划，可以避免不利的变形模式，如皱纹。此外，该方法适用于在精整过程中的钣金产品的形状的在线调整。