To improve fast-tool-servo (FTS) freeform machining accuracy, a closed-loop FTS system is developed with functional modules including toolpath generation, on-machine surface measurement, machining error mapping and compensation. A surface characterisation toolkit was identified and integrated into the processing chain to realise in-process inspection and fast quality control. Surface sampling and reconstruction strategies and robust surface filtration algorithms are adapted to regulate the data flow for both freeform surface characterisation and the optimisation of compensation toolpath from machined error maps. The performance of the developed system is demonstrated by successfully generating three typical freeform surfaces with improved form accuracy by 50%.

为了提高快速刀具伺服（FTS）自由曲面加工精度，开发了闭环FTS系统，其功能模块包括刀具路径生成、在机表面测量、加工误差映射和补偿。确定了表面表征工具包并将其集成到加工链中，以实现过程中检查和快速质量控制。表面采样和重建策略以及稳健的表面过滤算法适用于调节数据流，用于自由曲面表征和来自加工误差图的补偿刀具路径的优化。通过成功生成三个典型的自由曲面，并将形状精度提高 50%，证明了所开发系统的性能。