Draw-bending apparatus and method

Details Draw-bending apparatus and method Draw-bending apparatus and method

1974-04-01

1976-01-27

Keenan, Michael J.

Metal deforming

With use of control means energized in response to activator...

Sensing tool or tool-linked part

72305, 72378, B21D 1102

Patent

active

039344398

ABSTRACT:
Draw-bending apparatus for bending portions of a continuous metallic member have spaced bending tables which are rotatable about their axes and which can be clamped to spaced portions of the member to be bent. The tables are then rotated to draw and bend the members to which they are secured. The tables are operated so that they rotate for the same length of time even though they rotate through different angles. Servo valve control means are provided to ensure a constant bending torque for each table and to control the rate of table rotation according to a pre-selected program.

REFERENCES:
patent: 2569181 (1951-09-01), Laxo
patent: 2897871 (1959-08-01), Wells
patent: 2944582 (1960-07-01), Ahonen
patent: 3187542 (1965-06-01), Heller
patent: 3575031 (1971-04-01), Gray
patent: 3662584 (1972-05-01), Jones
patent: 3757557 (1973-09-01), Kost
patent: 3786666 (1974-01-01), York

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