The design of reamer, which is made to machining the basic hole of tapered thread hole on the seamless steel resolvable ethine gas-jar, is introduced.

• 介绍了一种加工钢质无缝溶解乙炔气瓶锥螺纹底孔的铰刀设计方法,对铰刀的主要参数和特点做了简要分析。