mandril

1.【机】轴胎,心轴,紧轴;【冶】(铸造用的)圆形心轴;(采矿用的)鹤嘴锄,铁镐

1.a tapered shaft or arbor to which work is secured during machining or turning, e.g. on a lathe

2.a rod around which materials such as metal or glass are molded, forged, or shaped

3.a shaft on which a tool such as a dentist's drill or machining tool is mounted

4.a miner's pick