搅拌摩擦焊接装备及其过程控制研究进展

综述了搅拌摩擦焊接设备的发展现状,系统分析了这些设备的特点,并对搅拌摩擦焊接中位移控制、压力控制、焊缝跟踪等过程控制技术进行了概述。分析表明:搅拌摩擦焊接装备经历了铣床改装搅拌摩擦焊接设备、搅拌摩擦焊接专机、搅拌摩擦焊接机器人的发展过程;搅拌摩擦焊接机器人凭借高度柔韧性、多种模式过程控制、高度智能化的优势,将被广泛应用于多种工业制造领域,成为近期的研究热点;搅拌摩擦焊接过程控制技术目前主要侧重于压力监控、位移控制和焊缝跟踪,但是控制精度和稳定性均无法满足实际生产需求,因此高精度、高可靠性的多过程耦合控制技术是今后的重点研究内容。

Research progress of friction stir welding equipment and the process control

The development status of friction stir welding equipments is summarized, the characteristics are systematically described, and the process control techniques, such as position control, force control and seam track, are reviewed. The analysis shows that the friction stir welding equipments have undergone the development of modified milling machine, friction stir welding machine and friction stir welding robot. The friction stir welding robot will be applied to various manufacture fields due to the advantages of being highly flexible, multi-mode process controllable, highly intelligent, which is also a research hotspot in recent years. Friction stir welding process control technology is mainly focused on pressure monitoring, displacement control and seam tracking, but the control precision and stability cannot meet the actual production needs. Therefore, multi-process coupling control technology with high precision and high reliability is the key research content in the future.