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US 4,315,425 AGranted
Clamping device for fastening a tool to a tool holder
AssigneeHaemmerle AG
InventorsVaclav Zbornik, Walter Gygli
Life of this patent
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AssigneeHaemmerle AG
InventorsVaclav Zbornik, Walter Gygli
Estimating the term…
An easily releasable hydraulically pressurized clamping block assembly for attaching the bending tool to the ram of a folding press. A first clamping block having a recess to receive the tool abuts a bearing block at the rear thereof and is fitted with pins engaging in bores in the clamping block and in the bearing block while within the bearing block a longitudinal groove is provided which receives a hose which can be pressurized from a fluid pressure source through a control valve. Along the longitudinal groove between the above bores are holes which are fitted with springs which compress the hose when in a non-pressurized state. A modification provides pins with widened heads. Another modification uses straight pins and an intermediate block within the groove to press against the hose. Still another modification provides a groove in the ram itself rather than in a separate block.
A hydraulically pressurized block clamping assembly for receiving a bending tool and clamping the tool in a receiving groove of the ram of a folding press, said assembly comprising:
A clamping assembly for clamping a bending tool to the ram of a folding press comprising;
A hydraulically actuated means for securing a tool to the ram of a folding press comprising:
Dependencies are inferred from the claim text.