Metal deforming – By deflecting successively-presented portions of work during... – By use of work-contacting wiper and moving – work-holding form
Patent
1975-05-27
1977-02-08
Lanham, C.W.
Metal deforming
By deflecting successively-presented portions of work during...
By use of work-contacting wiper and moving, work-holding form
B21D 704
Patent
active
040066215
ABSTRACT:
The pipe bending machine of the present invention is adapted for mandrelless pipe bending with the simultaneous compressing of the pipe being bent to avoid thinning of the walls thereof.
The invention can be used to best advantage when applied to bending large-diameter (1000 mm and over) steel pipes.
The machine features the bending mechanism and the longitudinal travelling mechanism so interconnected by means of the members and disks that a braking moment is applied to the bending mechanism and, consequently, pipe upsetting occurs.
REFERENCES:
patent: 3368377 (1968-02-01), Hirayama et al.
Frolkina Zoya Mikhailovna
Goncharova Raisa Ivanovna
Moshnin Evgeny Nikolaevich
Nistratov Alexei Fedorovich
Yanov Stanislav Ivanovich
Combs E. M.
Lanham C.W.
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