Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1983-09-19
1986-06-17
Crane, Daniel C.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72 30, 72319, B21D 504
Patent
active
045948674
ABSTRACT:
A sheet bending machine wherein a sheet of metal is fixed between a clamping beam and a lower beam mounted with interchangeable folding rails and wherein the bending is performed by a bending beam being swung against the projecting part of the sheet metal. The interchangeable folding rails have markings, for example, protrusions or recesses on the rear edge which cooperate with a set of members for establishment of a steering code which determines the maximum permissible bending angle for the folding rail. The code may be in the nature of a series of contacts which are opened or closed, dependent on the folding rail being used, having a recess opposite them or not. The state of the contacts may, for example, be sensed by a cam disc which curves synchronically with the swing movement of the bending beam and successively opens the contacts which are connected in parallel above them, so that a current circuit is switched when both corresponding pair of contacts are opened.
REFERENCES:
patent: 348423 (1886-08-01), Shackleton
patent: 2394193 (1946-02-01), McCabe
patent: 2699812 (1955-01-01), McCormack et al.
patent: 3299681 (1967-01-01), Hautau
patent: 3717016 (1973-02-01), Peddinghaus
patent: 3726120 (1973-04-01), Hugert
patent: 4283929 (1981-08-01), Heiberger
Crane Daniel C.
Maskinfabriken Cidan A/S
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