Automatic compensation method and apparatus for welding clamp

摘要

The method comprises: a) positioning the welding pincer gun in an open position with respect to a workpiece (8); b) maintaining the position of the welding pincer gun by means of a compensating actuator (7) being governed by control means as per a position control mode wherein said actuator (7) is maintained in a constant position irrespective of the current being consumed; c) sensing the current being consumed by the actuator (7) during the position control mode and switching the control to a current control mode wherein the actuator (7) is maintained in a state of consuming the current having been previously sensed; d) closing the horns (1, 2) of the welding pincer gun while the actuator (7) remains in said current control mode, and carrying out the weld; and e) opening the welding pincer gun and returning the control of the actuator to the position control mode.