中文摘要：

针对不同曲面的环形刀多轴加工，提出了最大步距计算的数学模型，建立了残留高度为常数时步距与刀轴倾角之间的函数关系，通过函数关系推导出最佳步距的值。实验表明，该算法在保证加工精度的前提下，能有效缩短加工刀轨路径，提高加工效率。

英文摘要：

The theoretical model of the maximum stepover estimation is established for different cases on the machine surface profile using the end-filleted cutter in multi-axis machining. The function between the stepover and inclination angles of tool axis is constructed at constant scallop-height. According to the equations the optimum stepover is derived. Experimental results show that the presented algorithm is feasible. It can obtain shorter tool path and improve the quality of machining.