The FEM(finite element method) of the main shaftclamping apparatus-cutter system for DMU-70V NC high speed machining was built, and the results of the FEM were validated using dynamic test.

When calculating service probability of anti-aircraft to high velocity targets by method of Monte Carlo, targets should been regarded as Poisson Stream on axis of distance.

The load of planetary bearings and the moment in the high speed shafts are analyzed and some suggestions about the structure type and design parameters of the three ring reductor were a…