机器人弧焊过程焊缝质量信息的在线判读

在机器人焊接生产中,由于目前多数弧焊机器人尚不具备对环境的自适应功能,当焊接过程中存在干扰时,会出现焊接质量的波动,并导致焊缝缺陷的产生。因此,在线监测机器人的焊接过程质量成为当前工业界倍受关注的技术之一,尤其是在节拍快、批量大的汽车部件制造中,本研究工作通过检测机器人焊接过程的位置、能量以及缺陷的信息,进行信息特征的提取与融合,在“桑塔纳”轿车部件机器人焊接生产中,实现了焊缝质量的在线分析和判读,对焊接产品的“零次品”、“零缺陷”质量控制具有重要意义。

On-line Quality Monitoring in Robot Arc Welding Process

In robot arc welding process, occasional disturbance will lead to uneven welding quality and weld defects. The on-line welding quality monitoring becomes one of the most heeded technology in the production industry especially in the automobile component manufacture. In this paper, a technology for on-line monitoring weld quality in robot arc welding process is described.It is based on the are signal features in the welding position, heat input and defects, to get the weld quality information and to evaluate if it is acceptable. It is important for "zero defect" quality control in robot welding production.