计算机控制磁流变抛光软件去除算法设计

Remove algorithm design for computer controlled magnetorheological finishing

摘要:

根据计算机控制磁流变抛光的去除机理，分析了抛光工艺软件的去除算法核心问题即求解驻留时间函数和加工路径设计。采用简森-范锡图特法对驻留时间函数进行迭代求解，同时优化设计工艺软件的加工路径算法，开展工艺软件全过程模块化、流程化设计，完成工艺软件的代码集成测试。最后，通过工艺软件控制磁流变抛光330 mm×330 mm石英平面反射镜实验，验证去除算法控制抛光过程的有效性及准确性，实验值与理论值吻合良好，从而证实工艺软件去除算法能够准确、有效地指导大口径光学元件的磁流变加工。

Abstract:

Based on the mechanism of magnetorheological finishing by computer control for optical surface, the core issues of process software are calculating dwell function and designing of machining path. This study utilized Jansson-Van Cittert algorithm to calculate dwell function，then optimized machining path. It accomplished software modularization programming, modular testing and integration testing. Finally, a validity and reliability test on a fused silicon element with an aperture of 330 mm×330 mm was performed. The data were consistent between analog surface and practical polishing surface. This proves that the software can control the whole magnetorheological finishing process accurately and effectively.