锻压技术

成形角对单点渐进成形精度影响的研究

英文标题：Research on influence of forming angle on the single-point incremental forming accuracy

作者：文怀兴黄书经史鹏涛

单位：陕西科技大学

分类号：

出版年,卷(期):页码：2015,40(7):62-67

摘要：

成形精度是单点渐进成形面临的一个重要问题，其目前所能达到的成形精度为±3 mm，然而在工业生产中要求金属板料成形精度为±0.2 mm。因此，如何提高单点渐进成形的成形精度是一项重要的课题。首先通过实验方法得出回弹量随成形角变化的规律；其次，采用不同负补偿值的方法对不同成形角下的试件进行补偿，并得到相应条件下试件的回弹量；最后，找出回弹量随补偿值变化规律，并采用最小二乘法原理进行拟合得到关系式。研究结果说明，只要在加工之前根据补偿值大小预测出该成形角下的回弹量，就能判断出该试件是否符合要求。

The accuracy of the single-point incremental forming (SPIF) is an important issue in the industry. At present its accuracy can only reach ±3 mm, while the practical demand is ±0.2 mm. Therefore, how to improve the forming accuracy is an important project to research. Firstly， the variation of the springback with the change of the forming angle was obtained by the experiment. Then, the specimens under different forming angles were compensated by different negative compensation values, and the springback under the corresponding condition was obtained. Finally，the regularity of springback with the change of the compensation values was found and the relationship equation was obtained by the principle of least squares method. The research results show that as long as the springback under different forming angles is predicted according to the compensation values before processing，the result whether specimens will meet the requirements or not can be forecasted.

基金项目：

陕西科技大学科研启动基金项目（BJ10-07）

文怀兴（1957-），男，博士，教授

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