Method for straight-line drawing of round material

Details Method for straight-line drawing of round material Method for straight-line drawing of round material

1987-08-10

1989-02-21

Crane, Daniel C.

Metal deforming

By pulling workpiece through closed periphery die

Utilizing plural metal-deforming tools

72281, B21C 104

Patent

active

048054348

ABSTRACT:
Method of straight-line drawing for reducing the cross section of round material, tubing, solid and hollow profiles in at least two drawing stages, which includes feeding material to be drawn with a leading end to a first drawing machine for a first drawing stage, feeding the material to be drawn with the leading end in a straight line downstream of the first drawing machine. Subsequently the material to be drawn is fed with the leading end to at least one second drawing machine having a linearly movable intermittently operable drawing carriage operating at a discontinuous speed at the beginning of the drawing while said first drawing machine is already operating continuously, being disposed downstream of the straight line for at least one second drawing stage. Next, the material to be drawn from the straight line upstream of the second drawing machine is deflected as soon as the leading end of the material to be drawn has reached the second drawing machine, and the length of the deflected material is varied for equalizing differences in feeding speed between said first and second machine.

REFERENCES:
patent: 679351 (1901-07-01), Williams
patent: 2138126 (1938-11-01), Smith et al.
patent: 2242435 (1941-05-01), Parvin et al.
patent: 2379801 (1945-07-01), Henry
patent: 2588834 (1952-03-01), Henderson
patent: 3175385 (1965-03-01), Mitchell et al.
patent: 3431766 (1969-03-01), Deardorff
patent: 3709021 (1973-01-01), Jackman
patent: 4045992 (1977-09-01), Griffiths
patent: 4079609 (1978-03-01), Hodgekiss

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