我部八二分队机修排试验成功用胀胎在C620-1型车床上加工岩心管和套管丝扣的方法.所用胎具结构简单,由胀盘1、胀锥2、弹簧3、锥杆4组成(见图).不同管径用不同规格的胀盘.如加工φ89岩心管用φ80胀盘;加工φ146岩心管用φ137胀盘.胀锥、弹簧、锥杆规格不变.加工时,先将胀盘一端夹在车床卡盘上,对正中心,把待加 My department eight two team aircraft row test success with inflation tire in the C620-1 lathe core and casing pipe threading method used by the simple structure of the tire expansion disc 1, expansion cone 2, spring 3, taper rod 4 composition (see picture) .Different diameter with different specifications of expansion plate.If processing φ89 core tube φ80 expansion plate processing φ146 core tube φ137 expansion plate. Expansion cone, spring, tapered rod specifications unchanged. Processing, the first Flatten one end caught in the lathe chuck, right center, to be added