Metal deforming – By use of non-deforming work-gripping clamp and relatively...
Patent
1976-08-02
1977-10-11
Keenan, Michael J.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
72157, B21D 704
Patent
active
040528782
ABSTRACT:
This invention relates to a novel tubing bender characterized by a horizontal bed atop which is mounted a template and a fixed block mounting a hollow tubular slide member for non-rotatable longitudinal slidable movement. The tube, in turn, mounts a longitudinally adjustable combination stop and slide support mechanism which selectively engages notches in the template to maintain the tube in longitudinally adjusted position relative to the block. A bending head is mounted on the end of the tubular member for rotatable adjustment relative thereto. The tube is slotted longitudinally both top and bottom to house internally an externally actuated vise mechanism that remains fixed relative to the block atop which it is mounted while the tube and bending head move as a unit longitudinally thereof. The vise mechanism releasably clamps a tubular workpiece passed through the tube in fixed spaced relation to the bending head, the spacing therebetween having been preset by the position of the stop in a selected notch in the template. The bending head has interchangeable dies which control both the radius and angle of the bend. The forming die that comprises a part of the bending head has a grooved block mounted thereon for limited relative longitudinal slidable movement thus defining a lost motion connection operative to free the head from the workpiece during the return or retraction stroke.
REFERENCES:
patent: 3299681 (1967-01-01), Hautau
patent: 3336776 (1967-08-01), Zerlaut
patent: 3388573 (1968-06-01), Presley, Jr.
patent: 3462985 (1969-08-01), Troyanski
Keenan Michael J.
Spangler, Jr. Edwin L.
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