Slaved tube length control for hairpin bender

Details Slaved tube length control for hairpin bender Slaved tube length control for hairpin bender

1993-11-22

1995-01-10

Jones, David

Metal deforming

By deflecting successively-presented portions of work during...

By use of work-contacting wiper and moving, work-holding form

72150, 72 21, B21D 704

Patent

active

053796241

ABSTRACT:
A method and apparatus for controlling the orienting of the ends of a finite length segment of tube following a bend thereof through a predefined angle. A supplying and delivering device supplies at least one straight finite length segment of tube to a tube bender for bending the tube about a bend axis. A first end of the finite length segment is oriented a predetermined distance from a bend axis about which the finite length segment is to be bent. The finite length segment is clamped to the bend arbor for movement therewith. The bend arbor is moved through the predefined angle to effect a bending of the finite length segment while simultaneously pushing the first end of said finite length segment toward a location whereat the finite length segment is clamped to the bend arbor. A rate of movement and distance through which the first end is moved is controlled to a ratio of the distance to be moved divided by the number of degrees in the predefined angle, the predetermined distance equalling the ratio multiplied by the number of degrees in said predefined angle.

REFERENCES:
patent: 3553989 (1971-01-01), Munro et al.
patent: 4313324 (1982-02-01), Pearson
patent: 4683649 (1987-08-01), Sbalchiero et al.
patent: 4831856 (1989-05-01), Gano et al.
patent: 5233853 (1993-08-01), Milliman
patent: 5259224 (1993-11-01), Schwarze

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