Metal deforming – With use of control means energized in response to activator... – Sensing work or product
Patent
1984-05-02
1986-01-21
Larson, Lowell A.
Metal deforming
With use of control means energized in response to activator...
Sensing work or product
72 21, 72 22, 72 83, 72 85, 72434, 72465, B21D 2216, B21D 2218
Patent
active
045650810
ABSTRACT:
A forming machine comprises a rotatingly drivable gripping device (1) for gripping a forming tool (2) and a material plate (3) to be formed, a movable lower slide (6), a first drive (8) for moving the lower slide, a movable upper slide (10, 35) mounted on the lower slide, a second drive (11, 34) for moving the upper slide and a holder (5) for a forming roller (4) supported on the upper slide (10, 35). A control unit (16) is provided for controlling the movement of the forming roller (4) by actuating both drives (8; 11, 34), the control unit being connected to a detector (18, 21) for determining the force exerted on the forming roller (4) and to a detector (17) for determining the position of the lower slide (6). A memory (25) is connected to the control unit for storing corresponding force/position values. The control unit (16) is adapted to control the movement of the forming roller (4 ) in dependence on the force/position values stored in the memory (25). The forming roller (4) is coupled to the second drive (11, 34) through a spring (13, 38) with a given spring characteristic. The detector (18, 21) for determining the force exerted on the forming roller consists of a position detector (18, 21) for determining the compression of the spring (13, 38).
REFERENCES:
patent: 1876747 (1932-09-01), Rainsford
patent: 4118846 (1978-10-01), Korte
patent: 4132098 (1979-01-01), Culver
patent: 4509351 (1985-04-01), Rolin et al.
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