Draw bench for producing cylindrical tubular items by drawing

Details Draw bench for producing cylindrical tubular items by drawing Draw bench for producing cylindrical tubular items by drawing

1976-03-19

1978-03-21

Keenan, Michael J.

Metal deforming

By pulling workpiece through closed periphery die

Utilizing plural metal-deforming tools

72285, 72290, B21C 130

Patent

active

040796167

ABSTRACT:
A method of producing cylindrical tubular items by drawing and a draw bench relate to methods and devices for plastic working of materials in a cold state. In the course of manufacturing cylindrical tubular items by drawing, said items are subjected to deformation on being drawn through a die and are imparted simultaneously a torsional moment, said torsional moment being imparted to that portion of each item which emerges from the die, while the item portion found in front of the die is restricted from torsion. The draw bench adapted for realizing the method of the invention comprises a device for drawing items through the die, said device being made as a driven carriage, a means for imparting to the item a torsional moment, said means being arranged on said carriage, and a means for restricting the item from torsion arranged at the die entry. Such method and draw bench allow obtaining drawn items featuring sufficient rectilinearity to be transferred to subsequent technological operations without intermediate and final straightening thereof.

REFERENCES:
patent: 1525730 (1925-02-01), Gates
patent: 1967487 (1934-07-01), Waisner
patent: 2250610 (1941-07-01), Simons
patent: 2864271 (1958-12-01), Kendall
patent: 3077131 (1963-02-01), McShane
patent: 3466916 (1969-09-01), Marcovitch
patent: 3520165 (1970-07-01), Dodson
patent: 3955390 (1976-05-01), Geary

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