A Study on the Cooling Characteristics of the Helical Type Cooling-Jacket of the Built-in Motor Spindle according to the Flow Rate

모터 내장형 주축계의 나선형 냉각 자켓의 유량에 따른 냉각 특성

Cooling characteristics of cooling jacket for spindle system with built-in motor are studied. Three dimensional model was selected for the analysis of the helical-type cooling jacket. This model includes the estimation on the amount of heat generation from bearing and built-in motor and the thermal characteristic values such as heat flux on the boundary. The temperature distributions are analyzed and the cooling by Nusselt number and total heat transfer coefficient. Numerical results show that stream-wise cross section area and flow rate are important factors for cooling characteristics of cooling jacket.