板料柔性拉形工艺装备的设计与实验研究

Design and experiment of flexible stretch forming technology equipment for sheet metal

针对传统拉形工艺材料利用率低的问题,提出一种采用多点拉形模具与离散夹钳拉形机相互配合的柔性拉形方法。介绍了板料柔性拉形技术的原理与特点,阐述了多点拉形模具与离散夹钳柔性拉形机的结构组成和工作原理,并采用自行研制的板料柔性拉形设备进行了工艺实验。实验结果表明:多点拉形模具与离散夹钳拉形机结构合理,能够实现板料的柔性拉形,并且拉形件的成形质量良好,成形误差能够满足生产要求。

To solve the problem of low material utilization in traditional stretch forming process, a flexible stretch forming method was proposed, which can be realized by interaction of the multi- point stretch forming die with discrete-gripper stretch forming ma- chine. The principle and characteristics of sheet metal flexible stretch forming technology was introduced, structural composition and working principle of the multi-point stretch forming die and dis- crete-gripper stretch forming machine were expounded, and the technology experiments were carried out with a self-designed flexible stretch forming technology equipment for sheet metal The experi- mental results indicate that structure of multi-point stretch forming die and discrete-gripper stretch forming machine are reasonable, and flexible stretch forming technology can be realized by above- mentioned die and machine, stretch forming parts have a good qual- ity and their shape error can satisfy requirements of production.