Process and machine for the forming of metal tubes into...

Details Process and machine for the forming of metal tubes into... Process and machine for the forming of metal tubes into...

B - Operations, Transporting

21

B

80/12

B21B 19/16 (2006.01) B21C 3/08 (2006.01) B21C 37/18 (2006.01) B21B 17/14 (2006.01) B21B 37/24 (2006.01) B21B 37/46 (2006.01)

Patent

CA 2007577

11 ABSTRACT The invention is concerned with a process and a machine for the forming of metal tubes into conically shaped or tapered bodies. In this process the metal tube blank is worked by a pair of rolls (2, 3) engaging and rolling the tube exterior, each of said rolls exhibiting on their working surface (4) a groove of a cross section corres- ponding to half the cross-sectional shapes of the tube blank, said groove being tapered in the circumferential direction. During rotation of the rolls (2, 3), the blank is drawn by means of a grip tong (6) through the deforma- tion cross section between the rolls which forms a die. Between individual drawing operations, the blank is ro- tated by the grip tong (6). Figure 1

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