Patent ID: 8340788
Filing Date: 2012-12-25
Classification: B26D,Y10T

Abstract:
1. A method for tuning operation of servo motors used in connection with a guillotine cutter for separating individual sheets from a continuous web, the guillotine cutter blade driven by a servo motor to cyclically lower and raise to transversely cut the web transported below the cutter blade, the tuning method comprising: selecting a plurality of discrete positions in a guillotine blade cycle for which to determine tuning coefficients; determining tuning coefficients at the discrete positions; interpolating tuning coefficients for positions between the discrete positions; applying the determined and the interpolated tuning coefficients to the servo motor; wherein the step of selecting the discrete positions includes selecting 90 degrees, 180 degrees, 270 degrees, and 360 degrees in the guillotine blade cycle wherein the 180 degree position represents a bottom dead center position and 360 degrees represents a top dead center positions; and wherein the 90 and 270 degree positions represent peak tuning coefficient values.