基于RP/RT/RE技术的金属板料冲压成形回弹误差补偿系统  

Compensation System of Springback Error in Sheet Metal Forming Based on RP/RT/RE

作　　者：李延平[1] 朱东波[2] 卢秉恒[2] 

机构地区：[1]集美大学,厦门361021 [2]西安交通大学,西安710049

出　　处：《中国机械工程》2005年第7期636-640,共5页China Mechanical Engineering

基　　金：国家 863 高技术研究发展计划资助项目(2001AA421270);"十五"国家科技攻关项目(2001BA205B10-01)

摘　　要：针对冲压件回弹误差,建立了基于RP/RT/RE技术的三维复杂形状板料冲压成形回弹误差精度闭环控制系统。以回弹误差为控制目标,以线性控制系统、空间Fourier变换和频域传递函数为理论基础,基于模具实验迭代,建立了模具回弹误差补偿修正算法,并首次将该算法应用于三维复杂形状板料冲压模具制造过程。工程实例表明,该系统对于三维自由曲面板料冲压模具制造具有良好的工程实用价值,特别能对冲压件回弹误差进行有效补偿。Aiming at springback errors, a closed-loop accuracy control system for complex 3D sheet metal stamping was constructed based on RP/RT/RE. The computational formula of DMA (dies-modification algorithm) was derived in the prerequisite of small springback deformation and steady-going stamping process parameters. The algorithm based on theory of linear closed-loop control system, space Fourier transform, transfer function in frequency domain and die experimental iteration. DMA is used for the first time in the fabricating of complex 3D sheet metal stamping dies.

关 键 词：金属板料冲压 回弹误差补偿 精度闭环控制系统 传递函数 

分 类 号：TG38[金属学及工艺—金属压力加工]