摘要
针对压缩机叶片激光再制造成形精度要求高、形状及形变控制难度大以及成形过程自动化、智能化水平低的工程实际情况,以边部非规则体积损伤压缩机薄壁叶片成形为目标,设计并实现了叶片激光再制造成形闭环控制系统,实现了形状及形变尺寸的闭环监测和激光功率的在线调节,开展了体积损伤薄壁叶片的激光再制造成形闭环控制.试验结果表明,叶片形状恢复充分,表层无裂纹,系统尺寸监测精度可达0.1 mm,系统参数反馈周期为0.5 s,采样频率为2 Hz.
Aiming at the high precision in forming demand,the high difficulty in shape and deformation controlling and the low level of intelligence of the engineering application,the laser refabrication forming closed-loop controlling system was designed and implemented to achieve the goal of the thin-wall compressor blade forming with volume damage on the edge. The system obtained the closed loop monitoring of the dimension and deformation dimension,and on-line regulating the laser power.The laser refabrication forming experiment of thin-wall blade was conducted. The result showed that the shape recovery was full and on cracks existed in the surface. The system monitor precision for dimension could reach 1 mm. And the feedback loop and sampling frequency were up to 0. 5 s and 2 Hz,respectively.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2018年第3期11-15,共5页
Transactions of The China Welding Institution
基金
国家自然科学基金项目(51275221)
江苏省高校自然科学研究重大项目(16KJA460002)
国家重点基础研究发展计划(2011CB013400)
关键词
激光再制造
压缩机叶片
闭环控制
形变控制
laser refabrication
compressor blade
closed-loop controlling
deformation controlling
