US Patent 7698801 Wire-processing device and method of operating such a wire-processing device

In a wire-processing machine, by a linear movement away from a first holding unit, a gripper applies to a gripping unit a pull-out force in the longitudinal axis of the wire. The pull-out force that is exerted on the wire is measured by, for example, a force sensor that is arranged on the holding unit or by the motor current of the motor that causes the linear movement. The gripper and the gripping unit together make measurement of the pull-out force possible also for medium-sized and large wires without the gripper needing to be constructed stronger, or its dimensions, or the gripper-arm drive, needing to be changed.