Dynamic and thermal analysis of high speed motorized spindle

Modern technology to a great extent relieson the use of High speed motorised spindle is a competent technology for significantly everincreasing productivity and plummeting production costs. On the one hand, high precision is essential for the ongoing trend of manufacturing activity, a striking example of which is found in electronics industry, automobile industry and machine tool industry.On the other hand, high precision is essential for leadingedge research. Compared to conventional spindles, motorized spindles are equipped with builtin motors for better energy consumption, balancing to achieve highspeed operation and good quality of product. However, the builtin motor introduces a great amount of heat into the spindle system as well as additional mass to the spindle shaft, thus complicating its thermomechanicaldynamic behaviors. This paper presents thermal characteristics and dynamic characteristics of High speed motorized spindle were analyzed experimentally. Numerical analysis was done and results were validated with experimental results.