원자로 부품의 수중 밀링 가공을 위한 4축 밀링 머신의 설계

Design of 4-axes Milling Machine for Underwater Milling of Nuclear Reactor Parts

A new milling machine was designed and manufactured for underwater cutting of rotary specimen racks(RSR) used in the Korea Research Reactor. To cut out intermediate level radioactive stainless steel parts from RSR effectively and safely, the machine was designed to be operated in four directions of X, Y, Z axes and a rotation upon Z axis. The stress and displacement of main frame were simulated by using a structural analysis tool(Design Space) and the pressure of clamping device was evaluated.