EP 0601680 B1 19960410 - Method of guiding a rough-pierced tube blank
Title (en)
Method of guiding a rough-pierced tube blank
Title (de)
Verfahren zum Führen einer Rohrluppe
Title (fr)
Procédé de guidage d'une ébauche de tube
Publication
Application
Priority
DE 4242423 A 19921211
Abstract (en)
[origin: JPH06218407A] PURPOSE: To surely roll a sort tube stock with a simple means by introducing the tube stock into a rolling mill with rolls and a pre-reduction equipment and guiding rotation as a fixing clamper. CONSTITUTION: This pre-reduction equipment 6 is composed of a plurality of rolls 7 which are disposed uniformly distributed around a tube stock 4 and which are adjustable toward the tube stock and freely rotatable. The equipment 6 is controlled by the position of the stock tube 4 wherein the adjusting movement of the rolls 7 is grasped. Thereupon, the tube stock 4 is introduced into a rolling mill 5 by moving the pre-reduction equipment 6 together with the rolls 7 holding the tube stock 4 in order to roll the short tube stock 4. Further, when the tube stock 4 is rolled by the rolling mill 5, the rotation of the tube 4 is guided as a fixing clamper by the rolls 7 of the pre-reduction equipment 6. Thus, disadvantageous points such as replacement of device elements required in the case of torsion and a different dimension of the tube stock are eliminated.
IPC 1-7
IPC 8 full level
B21B 17/04 (2006.01); B21B 19/06 (2006.01); B21B 19/16 (2006.01); B21B 23/00 (2006.01); B21B 39/14 (2006.01)
CPC (source: EP US)
B21B 19/16 (2013.01 - EP US); B21B 39/14 (2013.01 - EP US); B21B 19/06 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 4242423 C1 19940105; DE 59302191 D1 19960515; EP 0601680 A1 19940615; EP 0601680 B1 19960410; JP 3361375 B2 20030107; JP H06218407 A 19940809; US 5440911 A 19950815
DOCDB simple family (application)
DE 4242423 A 19921211; DE 59302191 T 19931207; EP 93250337 A 19931207; JP 34073593 A 19931209; US 16652293 A 19931213