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专利名称：Method of and device for manufacturing
tubes in a cold rolling mill
发明人：REHAG, KLAUS,GERRETZ, JOSEF,ZEUNERT,
FRITZ, DR. ING.
申请号：EP82730131.8申请日：19821021公开号：EP0079295A1公开日：19830518
专利附图：
摘要：1. Method for the production of pipes in a discontinuously operated cold pilgerrolling mill (1), in which the billet (3) is drawn over a fixed mandrel rod (9) by means ofgrooved rolls rolling back and forth down on the billet (3), whilst the billet (3) is held by afeed slide (4) and is conveyed in the rolling direction by means of feed screws (6), andwhich has a rotatable mandrel support (8) on the run-in side, in which the mandrel rod (8)can be firmly clamped, and which can be opened to introduce the billet (3) into the coldpilger rolling mill (1), characterized in that for the rolling of billets (3) the length of whichis greater than the effective length of the feed screws (6), the mandrel support (8) ismoved toward the input side of the cold pilger rolling mill (1) by a multiple of thiseffective length of the feed screws (6) and that the feed slide (4) takes hold of the billet
(3) and releases it respectively several times and repeatedly transports it further over apart of its length, the feed slide (4) being detached from the billet (3) after eachconveying passage and returned to its initial position.
申请人：MANNESMANN AG
地址：Postfach 10 36 41 D-40027 Düsseldorf DE
国籍：DE
代理机构：Meissner, Peter E., Dipl.-Ing.
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