Patent ID: 6430979
Filing Date: 2002-08-13
Classification: B21D,B25B,Y10T

Abstract:
A system to affix or compress a fastener for assembly, said system comprising:a clamping device to mount the fastener, said clamping device comprising a compression element which is driven by a source of power, at least one assembly parameter of the compression element being adjustable, first elements controlling assembly according to a distance, second elements controlling assembly according to a force, at least one setpoint element to control the first elements, and at least one setpoint-value/actual-value comparator to compare at least one component of the force which was built up and measured at the fastener during assembly wherein the compression element comprises a plurality of circularly arrayed, radially displaceable compression jaws and wherein, in the initial position, the circle constituted by jaw front sides is of a larger diameter than that of the circle constituted by the jaws in the compression position, the radial displacement of the individual jaws during compression and/or the diameter in the initial position and the diameter in the compression position is adjustable or controllable.