锻压技术

金属板料单点渐进成形变形控制方法

英文标题：Deformation control method of single-point incremental sheet forming

作者：张国新戴京东

分类号：TG306

出版年,卷(期):页码：2013,38(6):28-31

摘要：

为了有效控制金属板料单点渐进成形变形，根据成形件结构，分析其成形变形机理，提出了有效控制变形的措施：采用打钉限位法，可有效控制由于后续成形力作用而产生的变形；采用局部刚性支撑结构，可实现小曲率区域完全塑性成形；优化成形件结构，可减少板料成形时的回弹量；利用加工硬化原理，可控制平坦曲面成形时的回弹；采用分层等高成形法编制成形程序，可有效控制双峰制件结构成形时的变形。通过生产实践验证，这些措施有效可靠，对板料单点渐进成形技术的广泛应用与实际生产具有较强的适用价值。

In order to effectively control the deformation of single-point incremental forming for metal sheet,its forming deformation mechanism was analyzed and some effective measures to control deformation were put forward.The deformation caused by the following forming force was effectively controlled by the nailing limit method.The complete plastic forming in small curvature area was realized using partial rigid support structure.The sheet metal spring-back was reduced by forming structure optimization.The surface spring-back on flat surface was controlled using work-harden principle.The structure distortion of petronas doublet was effectively controlled by programming with the accordant layered forming method.These measures were proved that it is effcetive and reliable in production. It can be widely applied in sheet metal single-point incremental forming process and actual production.

基金项目：

江苏省科技创新基金重点资助项目（BC2011045)

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