丝锥的倒角牙部带有侧面刃立铣刀,逆转时能加工出具有均一内径的内螺纹的丝锥。
特别是适用于含矽量多的压铸件的批量生产。 (星亿实业 www.sing-yi.com.tw)
This tap is provided with
a Side End Mill at its chamfer to finish the minor
diameter of the internal thread uniformly during reverse
rotation.Especially suitable for mass-production of
die castings,which contain a high percentage of silicon. |