Combined drawing and straightening machine for metallic tubes or

Details Combined drawing and straightening machine for metallic tubes or Combined drawing and straightening machine for metallic tubes or

1973-09-24

1977-09-13

Keenan, Michael J.

Metal deforming

By pulling workpiece through closed periphery die

Utilizing plural metal-deforming tools

72 79, B21C 116, B21D 300

Patent

active

040474186

ABSTRACT:
Machine for simultaneous reduction and straightening of metallic tubes or rods has a reducing die which is mounted in the frame downstream of a guide for workpieces and upstream of a ring-shaped straightening tool whose axis orbits about the axis of the opening in the die. The outlet end of the internal surface surrounding the opening in the die tapers counter to the direction of lengthwise movement of workpieces through the die. The guide insures that the workpieces cannot be flexed upstream of the throat portion of the internal surface of the die, and a second guide can be provided downstream of the straightening tool to confine the flexing of the workpieces to the region between the throat portion of the internal surface of the die and the second guide. The tool is mounted in a spherical bearing which is installed in the eccentric bore of a sleeve driven by a pulley to rotate about the axis of the die whereby the tool orbits the axis of its passage about the axis of the opening in the die.

REFERENCES:
patent: 1847454 (1932-03-01), Webb
patent: 1933433 (1933-10-01), Hjelm
patent: 2088040 (1937-07-01), Simons et al.
patent: 2310916 (1943-02-01), Gaines et al.
patent: 3080962 (1963-03-01), Fleischmann
patent: 3181325 (1965-05-01), Cecchin
patent: 3264855 (1966-08-01), Turbett

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