3REN Bing - Yin,TANG Yu - Yong.CHEN C ha - Kuang. Thegeneral geometrical models of the design and 2 - axis NC machining of ahelical end 一 mill with constant pitch[ J]. Material Processing Technolo-gy ,2001 (03).
1HAN C S, DONG S, TANG Y Y. Geometric models of the ultra-precision grinding for large non-axisymmentric optical aspheric [ J ]. Key Engineering Materials, 2004,257-258:57-62.
