Device for clamping a tool

A clamping device for clamping a tool comprising a part receiving the tool and an actuated member, an engaging member to be brought into contact with the tool, and a transmission placed between the actuated member and the engaging member wherein the clamping device is self-braking and wherein the actuated member is electrically driven.

A clamping device for clamping a tool, comprising, a part receiving the tool and an actuated member, an engaging member to be brought into contact with the tool, and a transmission placed between the actuated member and the engaging member, the transmission comprising at least one wedge-shaped member, wherein the clamping device is self-braking, and wherein the engaging member is displaceable in a first direction between a rest position clear of the tool and a clamping position engaging the tool, and the actuated member is displaceable in a second direction which encloses an angle with the first direction.

A clamping device for clamping a tool, comprising a part receiving, the tool and an actuated member, an engaging member to be brought into contact with the tool, and a transmission placed between the actuated member and the engaging member, wherein the clamping device is self-braking, wherein the engaging member has a first surface which runs at an angle to its direction of movement and which co-acts with a second surface of the tool naming at an angle to the clamping direction, and wherein the angles of the first and second surfaces of the engaging member and the tool are chosen such that these surfaces are self-braking.

A press, in particular press brake, comprising a lower beam and an upper beam, wherein at least one of the beams is displaceable toward and away from the other beam, and a clamping device arranged on or integrated into at least one of the beams, wherein the clamping device comprises a part receiving the tool and an actuated member, an engaging member to be brought into contact with the tool, and a transmission placed between the actuated member and the engaging member, wherein the clamping device is self-braking.

A clamping device for clamping a tool, comprising a part receiving the tool and an actuated member, an engaging member to be brought into contact with the tool, and a transmission placed between the actuated member and the engaging member,

• wherein the transmission comprises at least one wedge-shaped member,
• the clamping device comprising at least one tumbler member placed between the wedge-shaped member and the engaging member, wherein the tumbler member is pivotable about a shaft and having one surface co-acting with a surface of the wedge-shaped member and another surface co-acting with a surface of the engaging member.