发明名称 DRAWING APPARATUS FOR A PIPE PROVIDED WITH MULTI-STEP DIAMETERS, METHOD FOR PIPE DRAWING AND A PIPE MANUFACTURED BY THE METHOD
摘要 A multistage pipe drawing apparatus according to the present invention comprises: a main body; a processing chuck module which is slid along the main body, and arranged to hold the front end of a pipe being processed; a drawing die module which is spaced apart from the processing chuck module, which is disposed on the main body to be slid independently from the processing chuck module, and which processes the pipe to be a shaft pipe; and a plug member fixing module which has one end inserted from the rear end of the pipe into the internal space of the pipe to be detachably combined with the drawing die module and the other end fixing the plug member provided with a protrusion protruding outwards from the rear end of the pipe, and which is disposed on the main body to be slid and moved integrally with the drawing die module.
申请公布号 KR20140019700(A) 申请公布日期 2014.02.17
申请号 KR20120086398 申请日期 2012.08.07
申请人 UGA TECH CO., LTD. 发明人 PARK, AE KYUNG
分类号 B21C3/00;B21C1/22 主分类号 B21C3/00
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