Hemming machine

Details Hemming machine Hemming machine

1992-07-15

1993-12-28

Jones, David

Metal deforming

By three or more coacting relatively movable tools

With means to actuate tools in sequence

72450, 2924358, 100271, 100280, B21J 918

Patent

active

052729036

ABSTRACT:
A machine for hemming an edge portion of an arcuate panel having a fixed die with an arcuate contour complementary to the panel, a moveable die head having prehemming and hemming dies thereon with edge contours, respectively, complementary to the edge contour of said panel. A single fluid actuator and a cam controlled linkage effect both vertical and lateral movement of both the hemming die and prehemming die relative to the fixed die upon operation of the actuator. A pair of arms are pivotally attached to the prehemming die to form a radius of rotation which controls horizontal and vertical movement of the prehemming die relative to the moveable die head to provide proper clearance and disengagement between the prehemming die and the edge portion of the arcuate panel and/or the fixed die after completion of the prehemming operation.

REFERENCES:
patent: 4346579 (1982-08-01), Takatsu
patent: 4706489 (1987-11-01), Dacey, Jr.
patent: 5005398 (1991-04-01), Evans
patent: 5035136 (1991-07-01), Dorsett

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