道岔尖(jian)軌(gui)是轉轍(che)器中(zhong)的重要(yao)部(bu)件，依靠尖(jian)軌(gui)的扳(ban)動，將列車(che)引入(ru)正線(xian)(xian)或側線(xian)(xian)方向(xiang)。尖(jian)軌(gui)在平面上可分為直(zhi)線(xian)(xian)型和曲線(xian)(xian)型。我國鐵路的大部(bu)分12號及12號以(yi)下(xia)的道岔，均采用(yong)直(zhi)線(xian)(xian)型道岔尖(jian)軌(gui)。
道岔尖軌(gui)(gui)(gui)(gui)尖軌(gui)(gui)(gui)(gui)加(jia)工(gong)(gong)工(gong)(gong)藝流程為：一次下料? 鋸切? 跟(gen)端壓(ya)型? 正火? 矯(jiao)直? 二(er)次下料? 鉆孔? 銑(xian)軌(gui)(gui)(gui)(gui)腰長圓(yuan)弧槽(cao)? 銑(xian)非工(gong)(gong)作邊軌(gui)(gui)(gui)(gui)肢及(ji)彈(dan)性可彎段(duan)軌(gui)(gui)(gui)(gui)肢? 銑(xian)工(gong)(gong)作邊軌(gui)(gui)(gui)(gui)頭? 銑(xian)非工(gong)(gong)作邊軌(gui)(gui)(gui)(gui)頭? 銑(xian)軌(gui)(gui)(gui)(gui)頂面及(ji)通長1：40軌(gui)(gui)(gui)(gui)頂坡? 淬(cui)火? 矯(jiao)直(曲(qu)尖軌(gui)(gui)(gui)(gui)圓(yuan)順)? 試(shi)驗并檢查密貼、支距和(he)平順度。
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