发明名称 Piercing mandrel for skew rolling mill - where mandrel is mounted on mandrel rod via ball seat which permits tilting
摘要 <p>Piercing mandrel mounting for a skew rolling mill has ball seats between the mandrel and the mandrel rod to provide the mandrel with some mobility. A journal on the end of the mandrel rod projects into a blind hole on the back of the mandrel with clearance round the journal on the mandrel with clearance round the journal so the mandrel can tilt. The novelty is that an intermediate disc is mounted on the end of the mandrel rod and provided with a ball seat mating with the ball seat on the back end of the mandrel; and the disc has a hole through which the journal projects into an elastic bearing in the blind hole in the mandrel. The hole pref. >4 mm play w.r.t. the dia. of the journal. The mandrel can pref. tilt 15-20 degrees and move axially by =2 mm. Transmission of mandrel rod vibration to the mandrel is avoided.</p>
申请公布号 DE2528308(A1) 申请公布日期 1976.12.30
申请号 DE19752528308 申请日期 1975.06.23
申请人 MANNESMANN AG 发明人 BILLER,HORST,DR.-ING.;HUELS,FRIEDRICH;BELLMANN,MANFRED;HOLZMANN,RAINER
分类号 B21B25/00;(IPC1-7):B21B25/02 主分类号 B21B25/00
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