Back to results
US 5,435,166 AGranted
Die cushion device for press
AssigneeKabushiki Kaisha Komatsu Seisakusho
InventorMasahide Sunada
Life of this patent
Estimating the term…
Abstract
A die cushion device which is compact and simple construction to be constructed at low cost, comprises a pad arranged in a head of the press and supporting a lower die from below, and a cushion mechanism supporting the pad and providing a cushion force by controlling a servo motor. It is also possible to preliminarily assembly the pad and the cushion mechanism to use as a unit.
Claims16
A die cushion device for a press provided with upper and lower dies comprising:
- a pad arranged in a head of the press and adapted to support the lower die from below;
- a cushion mechanism supporting said pad and providing a cushion force for the pad;
- said cushion mechanism comprising;
- a support member supporting said pad and moving in a vertical direction;
- a gear mechanism operatively connected to said support member;
- and
- a servo motor operatively connected to said gear mechanism;
- wherein the cushion force is directly provided for said pad by controlling said servo motor.
5 more elements
Dependencies are inferred from the claim text.