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US 5,495,742 AGranted
Press for hemming panels
AssigneeD. V. Automation Limited
InventorMichael W. Dorsett
Life of this patent
Estimating the term…
Abstract
The invention relates to an apparatus for bending a flange into engagement with a workpiece. A bending tool is mounted on a tool holder connected to a stand by a linkage mechanism. The linkage mechanism includes a first link with its ends journalled on a pin on the tool holder and on a fixed pin on the stand, and a second link with its ends journalled on a pin on the tool holder and on a pin, the position of which in relation tot he stand can be adjusted. A first drive member pivots the first link about its fixed pin and a second drive member moves the adjustable pin.
Claims10
A press comprising:
- a frame;
- a lever (V1) pivoted about a first fixed pivot point (FP1) on the frame;
- first and second linkages (K1, K2) pivotally connected to the lever about second and third pivot points (P2, P3), respectively, the second pivot point (P2) being intermediate the first and third pivot points (FP1, P3);
- a third linkage (K3) pivotally connected to the second linkage about a fourth pivot point (P4);
- a mechanism (K5, P8, C1) for moving the fourth pivot point;
- a fourth linkage (K4) pivotally connected to the third linkage about a fifth pivot point (P5) and pivotally connected to the first linkage about a sixth pivot point (P6);
- and
- a press tool (50) mounted on the first linkage and facing in a direction generally parallel to an axis intersecting the sixth pivot point and the second pivot point;
- wherein, as the press approaches a final pressing position of the press tool:
- the fifth pivot point is fixed relative to the frame;
- the press tool moves in a direction generally parallel to the axis intersecting the sixth and second pivot points;
- and
- the third, fourth and fifth pivot points approach alignment.
10 more elements
Dependencies are inferred from the claim text.