Apparatus and method for the noncircular bending of tubes

Details Apparatus and method for the noncircular bending of tubes Apparatus and method for the noncircular bending of tubes

2007-08-07

2007-08-07

Suhol, Dmitry (Department: 3725)

Metal deforming

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

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

C072S146000, C072S157000, C072S369000

Reexamination Certificate

active

11069173

ABSTRACT:
A tube bending apparatus adapted for the noncircular bending of a tube includes a modified bend die, a modified wiper die, a translatable and pivotable element and an actuator. The bend die presents a noncircular bending profile having a linearly or nonlinearly increasing radius of curvature. The wiper die is configured to accommodate the maximum radius presented by the profile, and the element and actuator present an inclined rack and pinion configuration. The bend die presents an involute of a circle having a radius equal to the product of the radius of the pinion and the sine of the angle of inclination, so that the bend die engages the tube at a fixed point in space during bending.

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