傳chuan統tong金jin屬shu加jia工gong領ling域yu對dui工gong件jian邊bian緣yuan處chu理li有you著zhe嚴yan苛ke要yao求qiu，雙shuang頭tou倒dao角jiao機ji作zuo為wei精jing加jia工gong關guan鍵jian設she備bei，其qi對dui稱cheng式shi設she計ji結jie構gou能neng夠gou同tong步bu完wan成cheng工gong件jian兩liang端duan的de斜xie麵mian切qie削xue。該gai設she備bei采cai用yong鑄zhu鐵tie床chuang身shen與yu高gao剛gang性xing導dao軌gui組zu合he，通tong過guo重zhong力li分fen布bu原yuan理li實shi現xian切qie削xue過guo程cheng的de振zhen動dong抵di消xiao
，尤you其qi適shi合he長chang軸zhou類lei零ling件jian的de批pi量liang處chu理li。