Abstract

For non-linear error because of rotational movement of the rotary axis, have analyzed how non-linear error is generated in the five-axis machining, and have established the non-linear error model of complex surface. Then have proposed a method of compensating for nonlinearity error is interpolate point. By using method of surface interpolation to interpolation point, the tool axis vector will be always kept on sector surface boundary with start and end tool axis vector within the program block, and be maintained the tool axis vector velocity and acceleration continuity. Simulation results show the nonlinearity errors of the fan blade machining are effectively controlled.

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