Bending head for a tube bending machine

Details Bending head for a tube bending machine Bending head for a tube bending machine

1975-05-05

1976-10-19

Mehr, Milton S.

Metal deforming

By use of roller or roller-like tool-element

Comprising tool movable relative to stationary work-portion...

B21D 7024

Patent

active

039863816

ABSTRACT:
A bending head for a tube bending machine which includes a housing, having a through axial passage, mounted in a cantilever fashion on the framework of the machine for forceful rotation about its axis, the tube or billet being pushed through the head along this axis during a bending operation. The free end of the housing has mounted in the passage thereof a pair of support rolls and a pivotable arm, kinematically connected to the drive of the machine through a screw-and-nut couple and a gear, carrying a bending roll. The axes of rotation of the rolls and of the pivoting of the arm are substantially perpendicular to the axis of rotation of the housing. There is mounted in opposition to each support roll and the bending roll a respectively similar additional roll positioned symmetrically with respect to the axis of rotation of the housing. The axis of pivoting of the pivotable arm lies in the same plane with the axis of rotation of the housing mounted adjacent to said gear and coaxially therewith is a second gear fast on the housing and independently kinematically connected to the drive of the machine. The employment of the bending head of the disclosed structure provides for a higher productivity of the bending machine of a similar known type, owing to the continuity of the bending operation and to the reduction of the maximum angle through which the housing may be required to rotate, down to 90.degree. (at varying the bending plane), and also broadens the production capacity of the machine, due to the reversibility of rotation of the housing and of the bending direction, either separately or in combination.

REFERENCES:
patent: 3373587 (1968-03-01), Shubin et al.
patent: 3680347 (1972-08-01), Schenk et al.
patent: 3845648 (1974-11-01), Shubin et al.

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