INSTRUMENT AND METHOD FOR MEASURING RESISTANCE BETWEEN ELECTRODES OF RESISTANCE WELDING MACHINE

摘要

PURPOSE: To easily measure accurate resistance between electrodes of the resistance welding machine. ;CONSTITUTION: The resistance between electrodes measuring instrument of the resistance welding machine is provided with a voltage detecting means C1 which detects the voltage (detection voltage) between both electrodes A, a current differentiation value detecting means D1 which detects a current differentiation value being the value obtained by differentiating timewise a current flowing between both electrodes A, a current value calculating means E1 which integrates timewise the current differentiation value and calculates a current value flowing between both electrodes A, a voltage integrating means F11 which integrates timewise the detection voltage between current coincident timings which are between two timings when sizes of the current value coincide mutually, a current integrating means G11 which integrates timewise the current value between current coincident timings and a dividing means H11 which divides an integration value by the voltage integrating means F11 by an integration value by the current integrating means G11.;COPYRIGHT: (C)1995,JPO