ABSTRACT
With high-speed and increasingly precise developments in the equipment manufacturing industry, the core functional components high-speed spindles of numerically controlled (NC) machines draw increasing research attention. However, the spindle may be subjected to sudden failure without any warning signals due to the bearing underlying thermal problem. However, the numerous thermal constraint conditions and the extremely complex heat generation and heat dissipation processes in an operational high-speed spindle, the heat transfer model that couples every boundary condition is hard to establish when trying to describe the transient temperature field distribution of the spindle system.
