Under combining the interpolation theory with non - linear capacity and parallel calculation structure of artificial neural network ( ann ) , a software implement technique for fine interpolation of the 1pt + 3tps hmt is researched . the roughing interpolation and fine interpolation algorithm of hmt are introduced in the first . the interpolation controller is constructed by bp neural network and the training with the lm algorithm to the controller is carried on 给出了混联机床粗插补和精插补算法,以bp神经网络构建了插补控制器,用lm算法对控制器进行训练,利用matlab中的神经网络工具箱进行了仿真,验证了其可行性和有效性,为实现面向制造过程的高速实时插补方面,提供了一种新的插补控制器结构。